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[Feature] DIK-structured Turkish syntactic dependency annotation dataset for structured linguistic evaluation #2508

Description

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Describe the feature

Current LLM evaluation benchmarks in OpenCompass focus heavily on English-centric tasks or surface-level semantic understanding, while fine-grained syntactic structure evaluation for morphologically rich languages (such as Turkish) remains limited.

In particular, existing benchmarks do not adequately evaluate a model’s ability to:

represent embedded clause structures
track nominalization (-DIK structures)
resolve pro-drop subjects
maintain cross-clause dependency relations
preserve syntactic function mapping in interrogative constructions

To address this gap, I propose a structured DIK-style syntactic annotation dataset for Turkish, designed as a pilot benchmark that can be integrated into OpenCompass evaluation pipelines.

The dataset consists of fully structured JSON annotations of Turkish sentences, where each sentence encodes:

sentence type (interrogative / declarative / etc.)
main clause decomposition
embedded DIK-complement clause structure
verb morphology (tense, mood, person, lemma)
syntactic roles (subject, object, adverbials)
pro-drop resolution
case marking and nominalization tracking

Example structure:
{
"text": "...",
"sentence_type": "...",
"main_clause": {
"subject": "...",
"verb": {...},
"object": {
"type": "DIK_complement_clause",
"embedded_clause": {...}
}
}
}

A pilot set of 20 fully standardized sentences has been completed, maintaining a consistent annotation schema throughout, with manually validated syntactic decomposition and a scalable design that does not require schema modification.

If this pilot is positively evaluated, the dataset will be expanded to:

100–300 high-quality sentences (Phase 1)
optional extension to multi-language morphologically rich benchmarks (Phase 2)
integration into structured reasoning / syntax evaluation tasks

This feature enables OpenCompass to:

evaluate syntactic reasoning beyond surface semantics
benchmark LLM performance on morphologically rich languages
support structured linguistic evaluation tasks
extend evaluation diversity beyond English-centered datasets

Will you implement it?

  • I would like to implement this feature and create a PR!

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