Papers by Yige Xu
Keyphrase Generation with Fine-Grained Evaluation-Guided Reinforcement Learning (2021.findings-emnlp)
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| Challenge: | Existing KG evaluation metrics are only aware of the exact correctness of predictions on phrase-level and ignore semantic similarities between similar predictions and targets, which inhibits the model from learning deep linguistic patterns. |
| Approach: | They propose a fine-grained evaluation metric to improve the previous KG framework . the evaluation metrics are only aware of the exact correctness of predictions on phrase-level . |
| Outcome: | The proposed method outperforms the existing frameworks among all evaluation scores. |
RevMUX: Data Multiplexing with Reversible Adapters for Efficient LLM Batch Inference (2024.emnlp-main)
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| Challenge: | Large language models (LLMs) have brought a great breakthrough to the natural language processing community, but their high throughput demands make them difficult to handle concurrent queries. |
| Approach: | They propose a parameter-efficient data multiplexing framework that integrates a reversible design in the multiplexer and can be reused to perform reverse operations and restore individual samples for classification. |
| Outcome: | The proposed framework improves inference efficiency while maintaining satisfactory classification performance. |
Incentivizing Strong Reasoning from Weak Supervision (2026.eacl-long)
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| Challenge: | Large language models (LLMs) have demonstrated impressive performance on reasoning-intensive tasks, but enhancing their reasoning abilities typically relies on expensive high-quality demonstrations and reinforcement learning. |
| Approach: | They propose to incentivize reasoning abilities of large language models without expensive demonstrations and reinforcement learning. |
| Outcome: | The proposed model can recover 94% of the gains of expensive RL at a fraction of the cost. |
Do We Always Need Query-Level Workflows? Rethinking Agentic Workflow Generation for Multi-Agent Systems (2026.findings-acl)
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| Challenge: | Existing approaches generate workflows either at task level or query level, but their relative costs and benefits remain unclear. |
| Approach: | They propose a query-level workflow generation framework that generates tasks at task level and query level. |
| Outcome: | The proposed framework reduces token usage by up to 83% compared to existing approaches . it maintains competitive performance with an average degradation of just 0.61% compared with existing approaches across multiple datasets . |
Efficient Cross-Task Prompt Tuning for Few-Shot Conversational Emotion Recognition (2023.findings-emnlp)
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| Challenge: | Emotion Recognition in Conversation (ERC) models are often expensive to train and fine-tune . |
| Approach: | They propose a derivative-free optimization method for few-shot conversational emotion recognition that leverages sharable cross-task knowledge by exploiting external knowledge from other source tasks. |
| Outcome: | The proposed method improves on few-shot scenarios and zero-shot transfers on five different contextual conversation datasets. |
SoftCoT: Soft Chain-of-Thought for Efficient Reasoning with LLMs (2025.acl-long)
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| Challenge: | Existing approaches to continuous-space reasoning focus on hard token decoding and suffer from catastrophic forgetting. |
| Approach: | They propose a method that generates instance-specific soft thought tokens as the initial chain of thoughts and maps them into the LLM’s representation space via a trainable projection module. |
| Outcome: | The proposed method improves LLM reasoning performance through supervised, parameter-efficient fine-tuning. |
From Outcomes to Processes: Guiding PRM Learning from ORM for Inference-Time Alignment (2025.acl-long)
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| Challenge: | Existing approaches to align large language models with human preferences suffer from inconsistent scoring and suboptimal alignment. |
| Approach: | They propose a dual-consistency framework that aligns partial sequences with human preferences. |
| Outcome: | The proposed framework significantly reduces granularity discrepancies and improves GPT-4 evaluation scores. |
One2Set: Generating Diverse Keyphrases as a Set (2021.acl-long)
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| Challenge: | Recent keyphrase generation models are wrongly imposing a predefined order on keyphrases . a new training paradigm is proposed to concatenate keyphrase sequences in parallel . |
| Approach: | They propose a training paradigm that concatenates keyphrases in a predefined order . they propose combining a fixed set of learned control codes with a bipartite matching mechanism . |
| Outcome: | The proposed model outperforms the state-of-the-art methods on multiple benchmarks. |