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c574d3a | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | /*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package tool.sieves;
import java.util.ArrayList;
import java.util.List;
import tool.util.Concept;
import tool.util.Ling;
import tool.util.Util;
/**
*
* @author Jen
*/
public class PrepositionalTransformSieve extends Sieve {
public static String apply(Concept concept) {
PrepositionalTransformSieve.init(concept);
transformName(concept);
return normalize(concept.getNamesKnowledgeBase());
}
public static void init(Concept concept) {
concept.setNamesKnowledgeBase(concept.getName());
if (!concept.getNameExpansion().equals(""))
concept.setNamesKnowledgeBase(concept.getNameExpansion());
}
private static void transformName(Concept concept) {
List<String> namesForTransformation = new ArrayList<>(concept.getNamesKnowledgeBase());
List<String> transformedNames = new ArrayList<>();
for (String nameForTransformation : namesForTransformation) {
String prepositionInName = Ling.getStringPreposition(nameForTransformation);
//if the phrase has a preposition, we:
//1. create new phrases by substituting with other prepositions
//2. removing the preposition in the phrase and swapping the surrounding parts of the string
if (!prepositionInName.equals("")) {
transformedNames = Util.addUnique(transformedNames, substitutePrepositionsInPhrase(prepositionInName, nameForTransformation));
transformedNames = Util.setList(transformedNames, swapPhrasalSubjectAndObject(prepositionInName, nameForTransformation.split("\\s+")));
}
//if the phrase does not have a preposition, we:
//generate new phrases by inserting prepositions,
//1. near the beginning and
//2. near the end of the string.
else {
transformedNames = Util.addUnique(transformedNames, insertPrepositionsInPhrase(nameForTransformation, nameForTransformation.split("\\s+")));
}
}
concept.setNamesKnowledgeBase(transformedNames)
;
}
public static List<String> insertPrepositionsInPhrase(String phrase, String[] phraseTokens) {
List<String> newPrepositionalPhrases = new ArrayList<>();
for (String preposition : Ling.PREPOSITIONS) {
//insert preposition near the end of the string
String newPrepositionalPhrase = (Ling.getSubstring(phraseTokens, 1, phraseTokens.length)+" "+preposition+" "+phraseTokens[0]).trim();
newPrepositionalPhrases = Util.setList(newPrepositionalPhrases, newPrepositionalPhrase);
//insert preposition near the beginning of the string
newPrepositionalPhrase = (phraseTokens[phraseTokens.length-1]+" "+preposition+" "+Ling.getSubstring(phraseTokens, 0, phraseTokens.length-1)).trim();
newPrepositionalPhrases = Util.setList(newPrepositionalPhrases, newPrepositionalPhrase);
}
return newPrepositionalPhrases;
}
private static List<String> substitutePrepositionsInPhrase(String prepositionInPhrase, String phrase) {
List<String> newPrepositionalPhrases = new ArrayList<>();
for (String preposition : Ling.PREPOSITIONS) {
if (preposition.equals(prepositionInPhrase))
continue;
String newPrepositionalPhrase = (phrase.replace(" "+prepositionInPhrase+" ", " "+preposition+" ")).trim();
newPrepositionalPhrases = Util.setList(newPrepositionalPhrases, newPrepositionalPhrase);
}
return newPrepositionalPhrases;
}
private static String swapPhrasalSubjectAndObject(String prepositionInPhrase, String[] phraseTokens) {
int prepositionTokenIndex = Util.getTokenIndex(phraseTokens, prepositionInPhrase);
return prepositionTokenIndex != -1 ? (Ling.getSubstring(phraseTokens, prepositionTokenIndex+1, phraseTokens.length)+" "+
Ling.getSubstring(phraseTokens, 0, prepositionTokenIndex)).trim() : "";
}
}
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