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Puyang Xu

5 accepted papers

2025

Improving Tool Retrieval by Leveraging Large Language Models for Query Generation

COLING 2025industry

Using tools by Large Language Models (LLMs) is a promising avenue to extend their reach beyond language or conversational settings. The number of tools can scale to thousands as they enable accessing sensory information, fetching updated factual knowledge, or taking actions in the real world. In suc…

Cited by 1SourcePDFScholar
2025

WebAgent-R1: Training Web Agents via End-to-End Multi-Turn Reinforcement Learning

EMNLP 2025

While reinforcement learning (RL) has demonstrated remarkable success in enhancing large language models (LLMs), it has primarily focused on single-turn tasks such as solving math problems. Training effective web agents for multi-turn interactions remains challenging due to the complexity of long-ho

2024

Planning and Editing What You Retrieve for Enhanced Tool Learning

NAACL 2024findings

Recent advancements in integrating external tools with Large Language Models (LLMs) have opened new frontiers, with applications in mathematical reasoning, code generators, and smart assistants. However, existing methods, relying on simple one-time retrieval strategies, fall short on effectively and…

2023

Ranking-Enhanced Unsupervised Sentence Representation Learning

ACL 2023long

Unsupervised sentence representation learning has progressed through contrastive learning and data augmentation methods such as dropout masking. Despite this progress, sentence encoders are still limited to using only an input sentence when predicting its semantic vector. In this work, we show that…

2022

Open World Classification with Adaptive Negative Samples

EMNLP 2022main

Open world classification is a task in natural language processing with key practical relevance and impact.Since the open or unknown category data only manifests in the inference phase, finding a model with a suitable decision boundary accommodating for the identification of known classes and discri…

Cited by 6SourcePDFScholar