| --- |
| license: gpl-3.0 |
| configs: |
| - config_name: default |
| data_files: |
| - split: test |
| path: data/test.jsonl |
| - split: validation |
| path: data/validation.jsonl |
| --- |
| # Norma Syllabarum Graecarum - A Benchmark for grc Syllabification and Vowel Length Annotation |
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| We introduce *Norma* as a common benchmark for the evaluation and comparison of NLP tools concerning markup of two tasks for Ancient Greek (grc): (1) **vowel length** of dichronic vowels (alpha, iota, ypsilon) in open syllables (where they impact syllable weight) and (2) **syllabification**, both boundaries and weight. This means that the benchmark also indirectly tests handling of sandhi phenomena and, for verse, metre. |
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| The benchmark includes 1228 lines of text by each of the below 14 authors, spanning many periods and genres of both verse and prose: |
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| - Alcman (*Louvre Partheneion* 36-49, mix of aeolic, trochaic and dactylic cola, NB: contains digamma, ϝ) |
| - Bacchylides (*Epinikion 5*, anapaesto-iambic and dactylo-troachaic) |
| - Aeschylus (*Supplices* 1-10, anapaests) |
| - Sophocles (*Oedipus Tyrannus* 1-20, iambic trimeter) |
| - Euripides (*Bacchae* 1-20, iambic trimeter) |
| - Thucydides (*Thucydidis historiae* 1.1.1.1-1.2.2.1, prose) |
| - Aristophanes (*Acharnenses* 1-16, iambic trimeter, and 299 lines from responding lyric songs) |
| - Plato (*Cratylus* 383-384a5, prose) |
| - Dioscorides (*Anthologia Graeca* 5.55, elegiac distichs) |
| - Plutarch (*Stoicos absurdiora poetis dicere* 1057.C1-F1, prose) |
| - Epictetus (*Enchiridion* 1.1.1-1.5.1, prose) |
| - Origenes (*Contra Celsum* 1.1-1.20, prose) |
| - Nonnus (*Dionysiaca* 1-20, dactylic hexameter) |
| - Quintus (*Posthomerica* 1-20, dactylic hexameter) |
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| The repository also provides a validation set, [`data/validation.jsonl`](data/validation.jsonl), containing 764 lines from Aristophanes' lyric poetry for the macronization task. |
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| ## Markup Format |
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| For the syllabification task the markup is: |
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| - square brackets [] enclose heavy syllables |
| - curly brackets {} enclose light syllables |
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| and for the macronization task the markup is: |
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| - carets ^ follow short ambiguous vowels (α, ι, υ) |
| - underscores _ follow long ambiguous vowels (α, ι, υ). |
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| In prose, for ease of comparison we consider the sentence to be the equivalent of the verse line, with the consequence that the final syllable of a sentence will be considered heavy if it ends with a consonant, even though the following sentence begins with a vowel; i.e. a prose *brevis in longo*. |
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| With regard to vowel length, the benchmark is designed to test performance of open (light) syllables only. This means that *all* open syllables with ambiguous vowels (α, ι, υ) have them marked with carets or underscores, while this is only *sporadically* true for closed syllables (and in such cases mostly before mute-liquid clusters). |
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| We also have an example of a word that avoids the normal rules of syllabification: |
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| - ...[ῇ]**{σι^ }{Σκα^}**[μάν][δρου,] (*Posthomerica*, 10) |
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