Papers by Yifeng Cai
š®2IT: Stepwise Syntax Integration Tuning for Large Language Models in Aspect Sentiment Quad Prediction (2025.findings-naacl)
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| Challenge: | Aspect Sentiment Quad Prediction (ASQP) is an extractive task that focuses on predicting tuples of sentiment-related elements from a given text. |
| Approach: | They propose a stepwise syntax integration tuning framework that integrates syntactic structure knowledge into LLMs through a multi-step tuning process. |
| Outcome: | The proposed framework integrates syntactic structure knowledge into large language models . it decomposes the quadruple generation task into two stages . the proposed framework significantly improves state-of-the-art performance across multiple datasets . |
SyncThink: A Training-Free Strategy to Align Inference Termination with Reasoning Saturation (2026.findings-acl)
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| Challenge: | Large language models (LLMs) achieve strong reasoning with Chain-of-Thought prompting, but long and redundant traces substantially increase inference cost. |
| Approach: | They propose a training-free and plug-and-play decoding method that reduces CoT overhead without modifying model weights. |
| Outcome: | Experiments on GSM8K, MMLU, GPQA, and BBH show that SyncThink achieves 62.00% average Top@1 accuracy using 656 generated tokens and 28.68s latency, compared to 61.22%, 2141 tokens, and 92.01s for full CoT decoding. |
Membership and Memorization in LLM Knowledge Distillation (2025.emnlp-main)
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| Challenge: | Recent advances in Knowledge Distillation (KD) aim to mitigate the high computational demands of Large Language Models (LLMs). |
| Approach: | They characterize and investigate membership privacy risks inherent in six LLM KD techniques . they use instruction-tuning settings that span seven NLP tasks and three teacher model families and various size student models to examine the extent of privacy risks. |
| Outcome: | The proposed methods carry membership and memorization privacy risks from the teacher to students, but differ across different techniques. |