Report
Probing LLMs for Joint Encoding of Linguistic Categories
| العنوان: | Probing LLMs for Joint Encoding of Linguistic Categories |
|---|---|
| المؤلفون: | Starace, Giulio, Papakostas, Konstantinos, Choenni, Rochelle, Panagiotopoulos, Apostolos, Rosati, Matteo, Leidinger, Alina, Shutova, Ekaterina |
| سنة النشر: | 2023 |
| المجموعة: | Computer Science |
| مصطلحات موضوعية: | Computer Science - Computation and Language, Computer Science - Artificial Intelligence, Computer Science - Machine Learning |
| الوصف: | Large Language Models (LLMs) exhibit impressive performance on a range of NLP tasks, due to the general-purpose linguistic knowledge acquired during pretraining. Existing model interpretability research (Tenney et al., 2019) suggests that a linguistic hierarchy emerges in the LLM layers, with lower layers better suited to solving syntactic tasks and higher layers employed for semantic processing. Yet, little is known about how encodings of different linguistic phenomena interact within the models and to what extent processing of linguistically-related categories relies on the same, shared model representations. In this paper, we propose a framework for testing the joint encoding of linguistic categories in LLMs. Focusing on syntax, we find evidence of joint encoding both at the same (related part-of-speech (POS) classes) and different (POS classes and related syntactic dependency relations) levels of linguistic hierarchy. Our cross-lingual experiments show that the same patterns hold across languages in multilingual LLMs. Comment: Accepted in EMNLP Findings 2023 |
| نوع الوثيقة: | Working Paper |
| URL الوصول: | http://arxiv.org/abs/2310.18696 |
| رقم الانضمام: | edsarx.2310.18696 |
| قاعدة البيانات: | arXiv |
| الوصف غير متاح. |