| { |
| "paper_id": "P85-1038", |
| "header": { |
| "generated_with": "S2ORC 1.0.0", |
| "date_generated": "2023-01-19T09:39:23.248797Z" |
| }, |
| "title": "DICTIONARIES OF THE HIND", |
| "authors": [ |
| { |
| "first": "George", |
| "middle": [ |
| "A" |
| ], |
| "last": "Miller", |
| "suffix": "", |
| "affiliation": { |
| "laboratory": "", |
| "institution": "Princeton University", |
| "location": { |
| "postCode": "08544", |
| "settlement": "Princeton", |
| "region": "NJ", |
| "country": "USA" |
| } |
| }, |
| "email": "" |
| } |
| ], |
| "year": "", |
| "venue": null, |
| "identifiers": {}, |
| "abstract": "", |
| "pdf_parse": { |
| "paper_id": "P85-1038", |
| "_pdf_hash": "", |
| "abstract": [], |
| "body_text": [ |
| { |
| "text": "I would like to describe some recent psychological research on the nature and organization of lexical knowledge, yet to introduce it that way, as research on the nature and organization of lexical knowledge, usually leaves the impression that it is abstract and not very practical.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "But that impression is precisely wrong; the work is very practical and not at all abstract.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "So I shall take a different tack.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "Computer scientists --those in artificial intelligence especlally --sometimes introduce their work by emphasizing its potential contribution to an understanding of the human mind.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "I propose to adopt that strategy in reverse: to introduce work in psychology by emphasizing Its potential contribution to the development of information processing and communication systems.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "We may both be wrong, of course, but at least this strategy indicates a spirit of cooperation.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "Let me sketch a general picture of the future.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "You may not share my expectations, but once you see where I think events are leading, you will understand why I believe that research on the nature and organization of lezical knowledge is worth doing.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "You may disagree, but at least you will understand.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "INTRODUCTION", |
| "sec_num": null |
| }, |
| { |
| "text": "I assume that computers are going to be directly linked by communication networks.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "Even now, in local area networks, a workstation can access information on any disk connected anywhere in the net. Soon such networks will not be locally restricted.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "The model that is emerging is of a very large computer whose parts are geographically distributed; large corporations, government agencies, university consortia, groups of scientists, and others who can afford it will be working together in shared information environments.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "For example, someday the Association foe Computational Linguistics will maintain and update an exhaustive knowledge base immediately accessible to all computational linguists.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "Our present conception of computers as distinct objects will not fade away -the local workstation seems destined to grow smaller and more powerful every year --but developments in networking will allow users to think of their own workstations not merely as computers, but as windows into a vast information space that they can use however they desire.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "Most of the parts needed for such a system already exist, and fiber optic technology will soon transmit broadband signals over long distances at affordable costs.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "Putting the parts together into large, non-local networks is no trivial task, but it will happen.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "Computer scientists probably have their own versions of this story, but no special expertise is required to see that rapid progress lies ahead.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "Moreover, this development will have implications for cognitive psychology.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "However the technological implementation works out, at least one aspect raises questions of considerable psychological interest: in particular, how will people use it? What kind of man-machine interface will there be?", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "What might lie \"beyond the keyboard,\" as one futurist has put it (Bolt, 1984) , has been a subject for much creative speculation, since the possibilities are numerous and diverse.", |
| "cite_spans": [ |
| { |
| "start": 65, |
| "end": 77, |
| "text": "(Bolt, 1984)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "Although no single interface will be optimal for every use, many users will surely want to interact with the system in something reasonably close to a natural language. Indeed, if the development of information networks is to be financed by those who use them, the interface will have to be as natural as possible --which means that natural language processing will be a part of the interface.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Some Technological Assumptions", |
| "sec_num": null |
| }, |
| { |
| "text": "Natural language interfaces to large knowledge bases are going to become generally available.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "The only question is when.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "How long will it take? Systems already exist that converse and answer questions on restricted topics.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "How much remains to be done?", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "Before these systems will be generally useful, three difficult requirements will have to be met.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "An interface must:", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "(1) have access to a large, general-purpose knowledge base; (2) be able to deal with an enormous vocabulary~ (3) be able to reason in ways that human users find familiar. Other features would be highly desirable (e.g., automatic speech recognition, digital processing of images, spatially distributed displays of information), but the three listed above seem critical. Requirement (I) will be met by the creation of the network.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "How a user's special interests will shape the organization of his knowledge base and his locally resident programs poses fascinating problems, but I do not understand them well enough to comment.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "I simply assume that eventually every user can have at his disposal, either locally or remotely, whatever data bases and expert systems he desires. Requirement (3), the ability to draw inferences as people do, is probably the most difficult.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "It is not likely to be \"solved\" by any single insight, but a robust system for revising belief structures will be an essential component of any satisfactory interface.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "I believe that psychologists and other cognitive scientists have much to contribute to the solution of this problem, but the most promising work to date has been done by computer scientists.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "Since I have little to say about the problem other than how difficult it is, I will turn instead to requirement (2), which seems more tractable.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Natural Language Interfaces", |
| "sec_num": null |
| }, |
| { |
| "text": "Giving a system a large vocabulary poses no difficulty in principle.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "And everyone who has tried to develop systems to process natural language recognizes the importance of a large vocabulary. Thus, the vocabulary problem looks like a good place to start.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "The dimensions of the problem are larger than might be expected, however, so there has been some disagreement about the best strategy.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "If, in addition to understanding a user's queries, the system is expected to understand all the words in the vast knowledge base to which it will have access, then it should probably have on the order of 250,000 lexical entries: at 1,000 bytes/entry (a modest estimate), that is 250 megabytes.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "Since standard dictionaries do not contain many of the words that are printed in newspapers (Walker & Amsler, 1984) , another 250,000 megabytes would probably be required for proper nouns.", |
| "cite_spans": [ |
| { |
| "start": 92, |
| "end": 115, |
| "text": "(Walker & Amsler, 1984)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "Since I am imagining the future, however, I will assume that such large memories will be available inexpensively at every user's workstation. It is not memory size per se that poses the problem.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "The problem is how to get all that information into a computer.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "Even if you knew how the information should be represented, a good lexical entry would take a long time to write.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "Writing 250,000 of them is a daunting task.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
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| { |
| "text": "No doubt there are many exciting projects that I don't happen to know about, but on the basis of my perusal of the easily accessible literature there seem to he two approaches to the vocabulary problem.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
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| "text": "One uses a machine-readable version of some traditional dictionary and tries to adapt it to the needs of a language processing system. Call this the \"book\" approach.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
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| "text": "The other writes iexical entries for some fragment of the English lexicon, hut formulates those entries in a notation that is convenient for computational manipulation. Call this the \"demo\" approach.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "The book approach has the advantage of including a large number of words, but the information with each word is difficult to use.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "The demo approach has the advantage that the information about each word is easy to use, but there are usually not many words.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
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| { |
| "text": "The real problem, therefore, is how to combine these two approaches: how to attain the coverage of a traditional dictionary in a computationally convenient form.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE VOCABULARY PROBLEM", |
| "sec_num": null |
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| { |
| "text": "If you adopt the book approach, what you want to do is translate traditional dictionary entries into a notation that makes evident to the machine the morphological, syntactic, semantic, and pragmatic properties that are needed in order to construct interpretations for sentences.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "Since there are many entries to be translated, the natural solution is to write a program that will do it automatically.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "But that is not an easy task.", |
| "cite_spans": [], |
| "ref_spans": [], |
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| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "One reason the translations are difficult is that synonyms are hard to find in a conventional dictionary. Alphabetical ordering is the only way that a lexicographer who works by hand can keep track of his data, but an alphabetical order puts together words with similar spellings and scatters haphazardly words with similar meanings. Consequently, similar senses of different words may be written very differently; they may be written at different times and even by different people.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "(For example, compare the entries for the modal verbs 'can,' 'must,' and 'will' in the Oxford English Dictionary.)", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "Only a very smart program could appreciate which definitions should be paraphrases of one another.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "Another reason that the translations are difficult is that lexicographers are fond of polysemy.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "It is a mark of careful scholarship that all the senses of a word should be distinguished; the more careful the scholarship, the greater the number of distinctions.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "When dictionary entries are taken literally the results for sentence interpretation are ridiculous. Consider an example.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "Suppose the language processor is asked to provide an interpretation for some simple sentence, say: \"The boy loves his mother.\"", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "And imagine it has available the text of Merriam-Webster's Ninth New Colleoiate D~.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "Ignoring sub-senses:", |
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| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "\"the\" has 4 senses, \"boy\" has 3, \"love\" has 9 as a noun and 4 as a verb, \"his\" has 2 entries, and \"mother\" has 4 as a noun, 3 as an adjective, 2 as a verb.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "Such numbers invite calculation. If we assume the system has a parser able to do no more than recognize that \"love\" is a verb and \"mother\" is a noun, then, on the basis of the literal information in this dictionary, there are 4x3x4x2x4 -384 candidate interpretations.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "This calcula-tion assumes minimal parsing and maximal reliance on the dictionary. Of course, no self-respecting parser would tolerate so many parallel interpretations of a sentence, but the illustration gives a feeling for how much work a good parser does.", |
| "cite_spans": [], |
| "ref_spans": [], |
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| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": "A-d all of it is done in order to \"disambiguate\" a sentence that nobody who knows English would consider to be the least ambiguous.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| { |
| "text": ": Synonymy and polysemy pose serious problems, even before we raise the question of how to translate conventional definitions into computationally useful notations.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
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| "text": "Any system will have to cope with synonymy and polysemy, of course, but the book approach to the vocabulary problem seems to raise them in acute forms, while providing little of the information required to resolve them.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "With sufficient patience this approach will surely lead to a satisfactory solution, but no one should think it will be easy.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Book Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "As presented so far, synonymy and polysemy appear to be two distinct problems.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "From another point of view, they are merely two different ways of looking at the same problem.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "In essence, a conventional dictionary is simply a mapping of senses onto words, and a mapping can be conveniently represented as a matrix: call it a vocabulary matrix.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "Imagine a huge matrix with all the words in a language across the top of the matrix, and all the different senses that those words can express down the the side.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "If a particular sense can be expressed by a word, then the cell in that row and column contains an entry; otherwise it contains nothing.", |
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| }, |
| { |
| "text": "The entry itself can provide syntactic information, or examples of usage, or even a picture --whatever the lexicographer deems important enough to include. Table 1 shows a fragment of a vocabulary matrix. First, it should be apparent that any conventional dictionary can be represented as a vocabulary matrix: simply add a column to the matrix for every word, and add a row to the matrix for every sense of every word that is given in the printed dictionary.", |
| "cite_spans": [], |
| "ref_spans": [ |
| { |
| "start": 156, |
| "end": 163, |
| "text": "Table 1", |
| "ref_id": null |
| } |
| ], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "(A lexical matrix can be viewed as an impractical w~y of printing a dictionary on a single, very large sheet of paper.)", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "Second, entering such a matrix consists of searching down some column or across some row.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "So a vocabulary matrix can be entered either with a word or with a sense.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "Thus, one difference between conventional dicticnaries, which can be entered only with a word, and the dictionary in out mind, which can be entered with either words or senses, disappears when dictionaries are represented in this more abstract form.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "Third, if you enter the matrix with a sense and search along a row, you find all the words that express that sense. When different words express the same sense, we say they are g~iQ~ym~USo On the other hand, if you enter the matrix with a word and look down that column, you find all the different senses that that word can express.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "When one word can express two or more senses, we say that it is ambiguous, or ~ixsemglL~.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "Thus, the two great complications of lexical knowledge, synonymy and polysemy, are seen as complementary aspects of a single abstract structure= Finally, since the vocabulary matrix serves only to represent the mapping between the two domains, it is free to expand as new words, or new senses for familiar words, are added.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "Of course, the number of columns is relatively fixed by the size of the vocabulary, so the major degrees of freedom are in deciding what the senses are and how to represent them.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "The Vocabulary Matrix", |
| "sec_num": null |
| }, |
| { |
| "text": "When the question is raised of what a computationally useful lexical entry should look like, it is time to shift from the book approach to the demo approach, where serious attempts have been made to establish a conceptual notation in which semantic interpretations can be expressed for computational use.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "By \"the demo approach\" I mean the strategy of building a system to process language that is confined to some well defined content area. Since language processing is a large and difficult enterprise, it is sensible to begin by trying out one's ideas in a small way to see whether they work. If the ideas don't work in a limited domain, they certainly won't work in the unlimited domain of general discourse.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "The result of this approach has been a series of progressively more ambitious demonstration programs.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "Among those who take this approach, two extremes can be distinguished.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "On the one hand are those who feel that syntactic analysis is essential and should be carried, if not to completion, then as far as possible before resorting to semantic information.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "On the other hand are those who prefer semantics-based processing and consider syntactic criteria only when they get in trouble. ", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Approach", |
| "sec_num": null |
| }, |
| { |
| "text": "Most of these demos have small vocabularies.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "It is surprising how much you can do with 1,500 well chosen words; a demo with more than 5,000 words would be evidence of manic energy on the part of its creator.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "A few thousand lexical entries have been all that was required in order to test the ideas that the designer was interested in.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "The problem, of course, is that writing dictionary definitions is hard work, and writing them in LISP doesn't make it any easier.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "If you are satisfied with definitions that take five lines of code, then, obviously, you can build a much larger dictionary than if you try to cram into an entry all the different senses that are found in conventional dictionaries.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "But even with short definitions, a great many have to be written.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "If you want the language processor to have as large a vocabulary as the average user, you will have to give it at least i00,000 words.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "One way to get a feeling for how many words that is is to translate it into a rate of acquisition. Several years ago I looked at Mildred Templin's (1953) data that way.", |
| "cite_spans": [ |
| { |
| "start": 137, |
| "end": 153, |
| "text": "Templin's (1953)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "Templin measured the vocabulary size of children of average intelligence at 6, 7, and 8 years of age.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "In two years they acquired 28,300 -13,000 = 15,300 words, which averages out to about 21 words per day (Miller, 1977) .", |
| "cite_spans": [ |
| { |
| "start": 103, |
| "end": 117, |
| "text": "(Miller, 1977)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "Most people, when they hear that result, confess that they had no idea that children are learning new words at such a rapid rate.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "But the arithmetic holds just as well for computers as for children.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "If you want the language processor to have a vocabulary of 100,000 words, and if you are willing to spend ten years putting definitions into it, then you will have to put in more than 27 new definitions every day.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "How far from this goal are today's demos?", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "The answer should be simple, but it's not.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "It is hard to tell exactly how many words these systems can handle. Definitions are usually written in terms of a relatively small set of semantic primitives, and the inheritance of properties is assumed wherever possible. The goal, of course, is to create an unambiguous semantic representation that can be used as input to an inferencing system, so the form of these representations is much more important than their variety, at least in the initial experiments.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "In the hands of a clever programmer, a few hundred semantic primitives can really do an enormous amount of work.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "Although it is often assumed that the fewer semantic primitives a system requires, the better it is, in fact there seems to be little advantage to keeping the number small.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "When the number of primitives is small, definitions become long permutations of that small number of different atoms (Miller, 1978) . When the set of primitives gets too small, definitions become like machine code: the computer loves them, but people find them hard to read or write.", |
| "cite_spans": [ |
| { |
| "start": 117, |
| "end": 131, |
| "text": "(Miller, 1978)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vocabulary Size", |
| "sec_num": null |
| }, |
| { |
| "text": "How large a set of semantic primitives do we need?", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "It is claimed that Basic English can express any idea with only 850 words, but that really cuts the vocabulary to the bone. The Dictionary of Contemporary Enalish~ which is very popular with people learning English as a second language, uses a constrained vocabulary of about 2,000 words (plus some specialized terms) to write its definitions.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "Using the L~ as a guide, Richard Cullingford and I tried to estimate how much effort would be involved in creating a computationally useful lexicon. Our initial thought was to write LISP programs for 2,000 basic terms, then use Cullingford's language processor (Cullingford, 1985) to translate all of the definitions into LISP.", |
| "cite_spans": [ |
| { |
| "start": 261, |
| "end": 280, |
| "text": "(Cullingford, 1985)", |
| "ref_id": "BIBREF5" |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "We quickly realized, however, that the 2,000 words are polysemous; different senses are used in different definitions. As a rough estimate, we thought 12,000 basic concepts might suffice.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "An examination of the ~ definitions also indicated that a great deal of information might have to be added to the translated definitions.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "Many of the simpler conceptual dependencies (information required for disambiguation, as well as for drawing inferences; Schank, 1975) have to be included in the definitions. Each translated definition would have to be checked to see that all sense relations, predicate-argument structures, and selectional restrictions were explicit and correct, and a wide variety of pragmatic facts (e.g., that \"anyhow\" in initial position signals a change of topic) would probably have to be added.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "We have not undertaken this task. Not only would writing 12,000 definitions (and checking out and supplementing 50,000 more) require a major commitment of time and energy, but we do not have Longman's permission to use their dictionary this way.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "I report it, not as a project currently under way, but simply as one way to think about the magnitude of the vocabulary problem.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "So the situation is roughly this: In order to have natural language interfaces to the marvellous information sources that will soon be available, one thing we must do is beef up the vocabularies that natural language processors can handle. That will not be an easy thing to accomplish.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "Although there is no principled reason why natural language processors should not have vocabularies large enough to deal with a any domain of topics, we are presently far from having such vocabularies on llne.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "C~Inlng Book and Demo", |
| "sec_num": null |
| }, |
| { |
| "text": "As we look ahead to having large vocabularies, we must begin to think more carefully about the search problem.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE SEARCH PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "In general, the larger a data base is, the longer it takes to locate something in it. How a large vocabulary can be organized in human memory to permit retrieval of word meanings at conversational rates is a fascinating question, especially since retrieval from the subjective lexicon does not seem to get slower as a person's vocabulary gets larger. The technical issues involved in achieving such performance with silicon memories raise questions I understand only well enough to recognize that there are many possibilities and no easy answers.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE SEARCH PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "Instead of speculating about the computer, therefore, I will take a moment to marvel at how well people manage their large vocabularies.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE SEARCH PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "In the past fifteen years or so a number of cognitive psychologists have been sufficiently impressed by people's lexical skills to design experiments that they hoped would reveal how people do it. This is not the time to review all that research (see Simpson, 1984) , but some of the questions that have been raised merit attention.", |
| "cite_spans": [ |
| { |
| "start": 251, |
| "end": 265, |
| "text": "Simpson, 1984)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE SEARCH PROBLEM", |
| "sec_num": null |
| }, |
| { |
| "text": "have considered two kinds of theories of lexical access, known as search theories and threshold theories.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychologists", |
| "sec_num": null |
| }, |
| { |
| "text": "Search theories assume that a passive trace is stored in the mental lexicon and that lexical access consists of matching the stimulus to its memory representation.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychologists", |
| "sec_num": null |
| }, |
| { |
| "text": "Preliminary analysis of the stimulus is said to generate a set of candidates, which is searched serially until a match is found.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychologists", |
| "sec_num": null |
| }, |
| { |
| "text": "Threshold theories claim that each sense of every word ks an independent detector waiting for its features to occur.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychologists", |
| "sec_num": null |
| }, |
| { |
| "text": "When the feature count for any sense gets above some threshold, that sense becomes conscious.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychologists", |
| "sec_num": null |
| }, |
| { |
| "text": "Both kinds of theories can account for most of the experimental data, but not all of it --which is unfortunate, since a clear decision in favor of one or the other might help to resolve the question of whether lexical access involves a serial processor with search and retrieval, or a parallel processor with simple activation.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychologists", |
| "sec_num": null |
| }, |
| { |
| "text": "Since the brain apparently uses slow and noisy components, something searching in parallel seems plausible, but such devices are not yet well understood.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychologists", |
| "sec_num": null |
| }, |
| { |
| "text": "Some of the most interesting psychological research on lexical access concerns how people get at the meanings of polysemous words.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "These studies exploit a phenomenon called priming: when a word in a given lexical domain occurs, other words in that domain become more accessible.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "For example, a person is asked to say, as quickly as possible, whether a sequence of letters spells an English word.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "If the word DOCTOR has just been presented, then NURSE will be recognized more rapidly than if the preceding word had been unrelated~ like BUTTER (Meyer & Schvaneveldt, 1971; Becket, 1980) . The recognition of DOCTOR is said to prime the recognition of NURSE.", |
| "cite_spans": [ |
| { |
| "start": 146, |
| "end": 174, |
| "text": "(Meyer & Schvaneveldt, 1971;", |
| "ref_id": null |
| }, |
| { |
| "start": 175, |
| "end": 188, |
| "text": "Becket, 1980)", |
| "ref_id": "BIBREF1" |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "This lexlcal decision task can be used to study polysemy if the priming word is ambiguous, and if it ks followed by probe words appropriate to its different senses.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "For example, the ambiguous prime PALM might be followed on some occasions by BAND and on other occasions by TREE. The question ks whether all senses of a polysemous word are activated simultaneously, or whether context can facilitate one meaning and inhibit all others.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "Three explanations of the results of these experiments are presently in competition.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "Context dependent access--Only the sense that is appropriate to the context is retrieved or activated.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "Ordered access--Search starts with the most frequent sense and continues serially until a sense ks found that satisfies the context.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Accesslnq Ambiquous Words", |
| "sec_num": null |
| }, |
| { |
| "text": "access--Everything is activated in parallel at the same time, then context selects the most appropriate sense.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Exhaustive", |
| "sec_num": null |
| }, |
| { |
| "text": "At present, exhaustive access seems to be the favorite.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Exhaustive", |
| "sec_num": null |
| }, |
| { |
| "text": "According to that theory, disambiguation is a post-access process; the access process itself ks a cognitive \"module,\" automatic and insulated from contextual influence.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Exhaustive", |
| "sec_num": null |
| }, |
| { |
| "text": "My own suspicion is that none of these theories is exactly right, and that Simpson (1984) is probably closer to the truth when he suggests that multiple meanings are accessed, but that dominant meanings appear first and subordinate meanings come in more slowly and then disappear.", |
| "cite_spans": [ |
| { |
| "start": 75, |
| "end": 89, |
| "text": "Simpson (1984)", |
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| "sec_num": null |
| }, |
| { |
| "text": "research on lexical access is continuing; the complete story is not yet ready to be told.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychological", |
| "sec_num": null |
| }, |
| { |
| "text": "One aspect of the work is so obvious, however, that its importance tends to be overlooked.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Psychological", |
| "sec_num": null |
| }, |
| { |
| "text": "The priming phenomenon presupposes an organization of lexical knowledge into patterns of conceptually related words, patterns that some linguists have called semantic fields.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "Apparently a semantic field can fluctuate in accessibility as a whole.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "I have generally taken the existence of semantic fields as evidence in favor of theories of semantic decomposition (Miller & Johnson-Laird, 1976) .", |
| "cite_spans": [ |
| { |
| "start": 115, |
| "end": 145, |
| "text": "(Miller & Johnson-Laird, 1976)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "The idea is that all the words in a semantic fleld share some primitive semantic concept, and it is the activation or suppression of that shared concept that affects the accessibillty of the words sharing it. I will illustrate the problem by de-Scribing some research we have been doing on vocabulary growth in school children. The results indicate that we need better ways to teach new words~ with that need in mind I will return to the question of what we can reasonably expect from natural language interfaces.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "Nominal semantic fields are frequently organized hierarchically and so are relatively simple to appreciate. Verbal semantic fields, however, tend to be more complex.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "For example, all the motion verbs --\"move,\" \"come,\" \"go,\" \"bring,\" \"rise,\" \"fall,\" \"walk,\" \"run,\" =turn,\" and so on --share a semantic primitive that might be glossed as \"change location as a function of time.\" In a similar manner, verbs of possession --\"possess,\"", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "\"have,\" \"own,\" \"borrow,\" \"buy,\" \"sell,\" \"find,\" and so on --share a semantic primitive that has to do with Eights of ownership.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "Not all semantic primes nucleate semanti\u00a2 fields, however.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "There is a causative primitive that differentiates \"rise\" and \"raise,\" \"fall\" and \"fell,\" \"die\" and \"kill,\" and so on, yet the causative verbs \"raise,\" \"fell,\" \"kill\" do not form a causative semantic field. Johnson-Laird and I distinguished two classes of semantic primitives: those (like motion) around which a semantic field can form, and those (like causation) used to differentiate concepts within a given field.", |
| "cite_spans": [], |
| "ref_spans": [ |
| { |
| "start": 283, |
| "end": 296, |
| "text": "(like motion)", |
| "ref_id": "TABREF0" |
| } |
| ], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "Although the nature of semantic primitives is a matter of considerable interest to anyone who proposes a semantic notation for writing the definitions that a language processing system will use, they have received relatively little attention from psychologists. Experimental psychologlsts have a strong tendency to concentrate on questions of function and process at the expense of questions of content. Perhaps their attempts to understand the processes of disambiguation will stimulate greater interest in these structural questions.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Semantic Fields", |
| "sec_num": null |
| }, |
| { |
| "text": "The reason that lexical polysemy causes so little actual ambiguity is that, in actual use, context provides information that can be used to select the intended sense.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE PROBLEM OF CONTEXT", |
| "sec_num": null |
| }, |
| { |
| "text": "Although contextual disambiguation is simple enough when people do it, it is not easy for a computer to do, even when the text is semantically well-formed.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE PROBLEM OF CONTEXT", |
| "sec_num": null |
| }, |
| { |
| "text": "With semantically ill-formed input the problem is much worse.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "THE PROBLEM OF CONTEXT", |
| "sec_num": null |
| }, |
| { |
| "text": "We have been looking at what happens when teachers send children to the dictionary to \"look up a word and write a sentence using it.\"", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "The results can be amusing: for example, Deese (1967) has reported on a 7th-grade teacher who told her class to look up \"chaste\" and use it in a sentence.", |
| "cite_spans": [ |
| { |
| "start": 41, |
| "end": 53, |
| "text": "Deese (1967)", |
| "ref_id": "BIBREF6" |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "Their sentences included: \"The milk was chaste,\" \"The plates were still chaste after much use,\" and \"The amoeba is a chaste animal.\"", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "In order to understand what they were doing, you have to see the dictionary entry for \"chaste': CHASTE: i. innocent of unlawful sexual intercourse. 2. celibate. 3. pure in thought and act, modest.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "4. severely simple in design or execution, austere.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "As Deese noted, each of the children's sentences is compatible with information provided by the dictionary that they had been told to consult.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "You might think that Deese's observation was merely an amusing reflection of some quirk in the dictionary entry foe \"chaste,\" but that assumption would be quite wrong.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "Patti Gildea and I (Miller & Gildea, 1985) have confirmed Deese's observation many times over.", |
| "cite_spans": [ |
| { |
| "start": 6, |
| "end": 42, |
| "text": "Gildea and I (Miller & Gildea, 1985)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "We asked 5th and 6th grade children to look words up and to write sentences using them.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "As of this writing, our i0-and 11-year old friends have written a few thousand sentences for us, and we are still collectingthem.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "Our goal is to discover which kinds of mistakes are most frequent.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "In order to do this, we evaluate each sentence as we enter it into a data management system and, if something is wrong, we describe the mistake.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "By collecting our descriptions, we have made a first, tentative classification.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "This project is still going on, so I can give only a preliminary report based on about 20% of our data.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "So far we have analyzed 457 sentences incorporating 22 target words: 12 are relatively common words that most of the children knew, and i0 are relatively rare words with which they were unfamiliar.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "The common words were selected from the core vocabulary of words introduced by authors of 4th-grade basal readers; the rare words were selected from those introduced in 12th-grade readers (Taylor, Frackenpohl, & White, 1979) . It is convenient to refer to them as the 4th-grade words and the 12th-grade words, respectively. Errors were relatively frequent.", |
| "cite_spans": [ |
| { |
| "start": 188, |
| "end": 224, |
| "text": "(Taylor, Frackenpohl, & White, 1979)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "Of the sentences classified so far, only 21% of those using 4th-grade words were sufficiently odd or unacceptable to indicate that the author did not have a good grasp on the meaning and use of the word, but 63t of the sentences using 12th-grade words were judged to be odd= Thus, the majority of the errors occurred with the 12th-grade words. Table 2 shows our current classification.", |
| "cite_spans": [], |
| "ref_spans": [ |
| { |
| "start": 344, |
| "end": 351, |
| "text": "Table 2", |
| "ref_id": "TABREF2" |
| } |
| ], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "Note that the categories are not mutually exclusive: some ingenious youngsters are able to make two oz even three mistakes in a single sentence. Most of the descriptive phrases in Table 2 should be self-explanatory, but some examples may help. Skip the selectional errors; I shall say more about them in a moment.", |
| "cite_spans": [], |
| "ref_spans": [ |
| { |
| "start": 180, |
| "end": 188, |
| "text": "Table 2", |
| "ref_id": "TABREF2" |
| } |
| ], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "Cons ider \"Wrong part of speech\": a student wrote \"my hobby is 1 istening to Ouran Duran records, I have obtained an ACCRUE for it', thus using a verb as a noun.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "As an example of \"Wrong preposition,\" consider the student who wrote: aBe very METICULOUS on your work.\" An example of \"Inappropriate topic\" is: \"The train was TRANSITORY.\" An example of \"Inappropriate object\" is: \"I was METIC-ULOUS about falling off the cliff.\" Examples of \"Used rhyming word\" are =Did it ever ACCRUE to you that Maria T. always marks with a special pencil on my face?', \"Did you evict that old TENET?\", and \"The man had a knee REPARATION o\" Other categories were even less frequent, so return now to the most common type of mistake, the one labelled \"Selectional error=\"", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Children's Use of Dictionaries", |
| "sec_num": null |
| }, |
| { |
| "text": "The sentences that Deese reported illustrate selectional errors. Further examples can be taken from our data= \"We had a branch ACCRUE on our plant,\" \"1 bought a battery that was TRANSITORY,\" \"The rocket REPUDIATE off into the sky,\" \"John is always so TENET to me=\" It is unfair to call these sentences \"errors\" and to laugh at the children's mistakes=", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "The students were doing their best to use the dictionary.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "If there was any mistake, it was made by adults who misunderstood the nature of the task that they had assigned.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "Take the \"accrue\" sentence, for ex-ample=", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "The definition that the students saw was: ACCRUE= come as a growth or result= \"Interest will accrue to you every year from money left in a savings bank. Ability to think will accrue to you from good habits of study.\"", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "We assume that the student read this definition looking for something she understood and found \"come as a growth.\" She composed a sentence around this phrase: \"We had a branch COME AS A GROWTH on our plant', then substituted \"accrue\" for it.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "This strategy seems to account for the other examples.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "A familiar word is found in the definition, a sentence is composed around it, then the unfamiliar word is substituted for the familiar word.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "Some further evidence supports the claim that something like this strategy is being used.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "One intriguing clue is that sometimes the final substitution is not made= the written sentence contains the word selected from the definition but not the word that it defined. And, since substitution is not a simple mental operation for children, sometimes the selected word or phrase from the definition is actually written in the margin of the paper, alongside the requested sentence.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "These are called selectional errors because they violate selectional preferences.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "For example, the girl who discovered that \"stimulate\" means \"stir up\" and so wrote, \"Mrs. Jones stimulated the cake,\" violated the selectional preference that =stimulate\" should take an animate object.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "One reason these errors are so frequent is that dictionaries do not provide much information about selectional preferences.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "We think we know how to remedy that deficiency, but that is not what I want to discuss here.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "For the moment it suffices if you recognize that we have a plentiful supply ~f sentences containing violations of selectional preferences, and that the sentences are of some educational significance.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Vlolatlons of Seleetlonal Preferences", |
| "sec_num": null |
| }, |
| { |
| "text": "Now let me pose the following question.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Intelligent Tutoring?", |
| "sec_num": null |
| }, |
| { |
| "text": "Could we use these sentences as a \"bug catalog\" in an intelligent tutoring system?", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Intelligent Tutoring?", |
| "sec_num": null |
| }, |
| { |
| "text": "At the moment, intelligent tutoring systems (Sleeman & Brown, 1982) use many menus to obtain the student's answers to questions, and some people feel that this is actually an advantage.", |
| "cite_spans": [ |
| { |
| "start": 44, |
| "end": 67, |
| "text": "(Sleeman & Brown, 1982)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Intelligent Tutoring?", |
| "sec_num": null |
| }, |
| { |
| "text": "But I suspect that if we had a good language interface, one that understood natural language responses, it would soon replace the menus.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Intelligent Tutoring?", |
| "sec_num": null |
| }, |
| { |
| "text": "In any case, imagine an intelligent tutoring system that can handle natural language input.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Intelligent Tutoring?", |
| "sec_num": null |
| }, |
| { |
| "text": "Imagine that the tutor asked children to write sentences containing words that they had just seen defined, recognized when a selectional error had occurred, then undertook to explain the mistake.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "Intelligent Tutoring?", |
| "sec_num": null |
| }, |
| { |
| "text": "would the intelligent tutor have to know in order to detect and correct a selectional error? Otherwise said, what more would it have to know than any language comprehender has to know?", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "The question is not rhetorical~ I ask it because I would really like to know the answer.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "In my view, it poses something of a dilemma.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "The problem, as Yorick Wilks (1978) has pointed out, is that any simple rules of co-occurrence that we are likely to propose will, in real discourse, be violated as often as they are observed.", |
| "cite_spans": [ |
| { |
| "start": 23, |
| "end": 35, |
| "text": "Wilks (1978)", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "(Not only do people often say one thing and mean another, but the prevalence of figurative and idiomatic language is consistently underestimated by theorists.)", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "If we give the intelligent tutor strict rules in order to detect selectional errors like \"Our car depletes gasoline,\" will it not also treat \"Our car drinks gasoline\"", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "as an error?", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "On the other hand, if the tutor accepted the latter, would it not also accept the former?", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "An even simpler dilemma, one often noted, is that a system that blocks such phrases as \"colorless green ideas\" will also block such sentences as \"There are no colorless green ideas.\"", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "If our tutor teaches children to avoid \"stimulate the cake,\" will it also teach them to avoid =you can't stimulate a cake'? When subtle semantic distinctions are at issue, it is customary to remark that a satisfactory language understanding system will have to know a great deal more that the linguistic values of words. It will have to know a great deal about the world, and about things that people presuppose without reflection. Such remarks are probably true, but they offer little guidance in getting the job done.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "Since I have no better answer, I will simply agree that the lexical information available to any satisfactory language understanding system will have to be closely coordinated with the system's general information about the world.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "To pursue that idea would, of course, go beyond the lexical limits I have imposed here, but it does suggest that we will have to write our dictionary not once, but many times --until we get it right.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| }, |
| { |
| "text": "So, while there is no principled obstacle to having large vocabularies in our natural language interfaces, there are still many problems to be solved. There is work here for everyone --linguists, philosophers, and psychologists, as well as computer scientists --and it is not abstract or impractical work. The answers we provide will shape important aspects of the information systems of the future.", |
| "cite_spans": [], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "What", |
| "sec_num": null |
| } |
| ], |
| "back_matter": [ |
| { |
| "text": "Making preferences more active.Artificial Intslliaence, 11, ", |
| "cite_spans": [ |
| { |
| "start": 42, |
| "end": 55, |
| "text": "Intslliaence,", |
| "ref_id": null |
| }, |
| { |
| "start": 56, |
| "end": 59, |
| "text": "11,", |
| "ref_id": null |
| } |
| ], |
| "ref_spans": [], |
| "eq_spans": [], |
| "section": "annex", |
| "sec_num": null |
| } |
| ], |
| "bib_entries": { |
| "BIBREF0": { |
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| "venue": "Annual Review Qf Information Science and TeGhnolouv", |
| "volume": "19", |
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| "pages": "161--209", |
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| "raw_text": "Amsler, R. A. (1984) Machine-readable dictionaries. Annual Review Qf Information Science and TeGhnolouv, 19, 161-209.", |
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| "ref_entries": { |
| "TABREF0": { |
| "num": null, |
| "html": null, |
| "text": "Fragment of a Vocabulary MatrixColumns represent modal verbs; rows represent modal senses; 'E' in a cell means the word in that column can express the sense in that row.", |
| "type_str": "table", |
| "content": "<table><tr><td>Several comments should be made about the</td><td/><td/><td/><td/><td/></tr><tr><td>vocabulary matrix.</td><td/><td/><td/><td/><td/></tr><tr><td/><td/><td/><td/><td>WORDS</td><td/></tr><tr><td/><td>SENSES</td><td/><td>can</td><td colspan=\"3\">may _mu~~_Mil</td><td>1</td></tr><tr><td colspan=\"3\">be able to</td><td>E</td><td/><td>.</td><td>.</td><td>.</td></tr><tr><td>be</td><td colspan=\"3\">permitted to E</td><td>E</td><td>.</td><td>.</td><td>.</td></tr><tr><td colspan=\"3\">be possible</td><td>E</td><td>E</td><td/><td>.</td><td>.</td></tr><tr><td colspan=\"3\">be obliged to</td><td>.</td><td>.</td><td>E</td><td>.</td></tr><tr><td colspan=\"3\">certain to be</td><td>.</td><td>.</td><td>E</td></tr><tr><td colspan=\"3\">be necessary</td><td>.</td><td>.</td><td>E</td></tr><tr><td colspan=\"2\">expected</td><td>to be</td><td>.</td><td>.</td><td>E</td><td>E</td></tr></table>" |
| }, |
| "TABREF2": { |
| "num": null, |
| "html": null, |
| "text": "Classification of Sentences", |
| "type_str": "table", |
| "content": "<table><tr><td>TYPe of. Sentence</td><td colspan=\"3\">4th-arade 12th~azade</td></tr><tr><td>No mistake</td><td/><td>197(249)</td><td>76(208)</td></tr><tr><td>Selectional error</td><td/><td>i0</td><td>58</td></tr><tr><td colspan=\"2\">Wrong part of speech</td><td>4</td><td>41</td></tr><tr><td>Wrong preposition</td><td/><td>4</td><td>24</td></tr><tr><td>Inappropriate topic</td><td/><td>0</td><td>24</td></tr><tr><td>Used rhyming word</td><td/><td>0</td><td>14</td></tr><tr><td colspan=\"2\">Inappropriate object</td><td>5</td><td>9</td></tr><tr><td>Wrong entry</td><td/><td>4</td><td>9</td></tr><tr><td>Word not used</td><td/><td>9</td><td>1</td></tr><tr><td>Object missing</td><td/><td>5</td><td>3</td></tr><tr><td colspan=\"2\">Two senses confounded</td><td>4</td><td>3</td></tr><tr><td>No response</td><td/><td>0</td><td>4</td></tr><tr><td>Not a word</td><td/><td>\u2022</td><td>3</td></tr><tr><td>Unacceptable idiom</td><td/><td>3</td><td>0</td></tr><tr><td colspan=\"2\">Sentence not complete</td><td>3</td><td>0</td></tr></table>" |
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