activity
20232026
most citedMiLe Loss: a New Entropy-Weighed Loss for Mitigating the Bias of Learning Difficulties in Large Language Models

1 citations · 1 across the 14 of their papers we have counts for

collaborators

15 papers

cs.AI2026

LongGuard: Mechanistic Analysis and Training-Free Mitigation of Long-Context Failure in Safety Guardrails

Ziyang Chen, Xing Wu, Songlin Hu

Safety guardrails serve as the last line of defense against harmful inputs and outputs of large language models (LLMs), yet they are trained and evaluated almost exclusively on sho…

cs.LG2026

PolicyLong: Towards On-Policy Context Extension

Junlong Jia, Jiang Zhou, Ziyang Chen +5

Extending LLM context windows is hindered by scarce high-quality long-context data. Recent methods synthesize data with genuine long-range dependencies via information-theoretic ve…

cs.CL2026

LongBench Pro: A More Realistic and Comprehensive Bilingual Long-Context Evaluation Benchmark

Ziyang Chen, Xing Wu, Junlong Jia +4

The rapid expansion of context length in large language models (LLMs) has outpaced existing evaluation benchmarks. Current long-context benchmarks often trade off scalability and r…

cs.CL2025

EntropyLong: Effective Long-Context Training via Predictive Uncertainty

Junlong Jia, Ziyang Chen, Xing Wu +5

Training long-context language models to capture long-range dependencies requires specialized data construction. Current approaches, such as generic text concatenation or heuristic…

cs.AI2025

Libra: Large Chinese-based Safeguard for AI Content

Ziyang Chen, Huimu Yu, Xing Wu +2

Large language models (LLMs) excel in text understanding and generation but raise significant safety and ethical concerns in high-stakes applications. To mitigate these risks, we p…

cs.CL2025

LongMagpie: A Self-synthesis Method for Generating Large-scale Long-context Instructions

Chaochen Gao, Xing Wu, Zijia Lin +2

High-quality long-context instruction data is essential for aligning long-context large language models (LLMs). Despite the public release of models like Qwen and Llama, their long…

cs.IR2025

LightRetriever: A LLM-based Text Retrieval Architecture with Extremely Faster Query Inference

Guangyuan Ma, Yongliang Ma, Xuanrui Gou +3

Large Language Models (LLMs)-based text retrieval retrieves documents relevant to search queries based on vector similarities. Documents are pre-encoded offline, while queries arri…

cs.CL2025

DSMoE: Matrix-Partitioned Experts with Dynamic Routing for Computation-Efficient Dense LLMs

Minxuan Lv, Zhenpeng Su, Leiyu Pan +10

As large language models continue to scale, computational costs and resource consumption have emerged as significant challenges. While existing sparsification methods like pruning…

cs.CL2025

NExtLong: Toward Effective Long-Context Training without Long Documents

Chaochen Gao, Xing Wu, Zijia Lin +2

Large language models (LLMs) with extended context windows have made significant strides yet remain a challenge due to the scarcity of long documents. Existing methods tend to synt…

cs.LG2024

CartesianMoE: Boosting Knowledge Sharing among Experts via Cartesian Product Routing in Mixture-of-Experts

Zhenpeng Su, Xing Wu, Zijia Lin +6

Large language models (LLM) have been attracting much attention from the community recently, due to their remarkable performance in all kinds of downstream tasks. According to the…

cs.AI2024

CodePMP: Scalable Preference Model Pretraining for Large Language Model Reasoning

Huimu Yu, Xing Wu, Haotian Xu +2

Large language models (LLMs) have made significant progress in natural language understanding and generation, driven by scalable pretraining and advanced finetuning. However, enhan…

cs.IR2024

Task-level Distributionally Robust Optimization for Large Language Model-based Dense Retrieval

Guangyuan Ma, Yongliang Ma, Xing Wu +3

Large Language Model-based Dense Retrieval (LLM-DR) optimizes over numerous heterogeneous fine-tuning collections from different domains. However, the discussion about its training…

cs.CL2024

Quest: Query-centric Data Synthesis Approach for Long-context Scaling of Large Language Model

Chaochen Gao, Xing Wu, Qi Fu +1

Recent advancements in large language models (LLMs) have highlighted the importance of extending context lengths for handling complex tasks. While traditional methods for training…

cs.IR2024

Drop your Decoder: Pre-training with Bag-of-Word Prediction for Dense Passage Retrieval

Guangyuan Ma, Xing Wu, Zijia Lin +1

Masked auto-encoder pre-training has emerged as a prevalent technique for initializing and enhancing dense retrieval systems. It generally utilizes additional Transformer decoder b…

cs.CL2023★ 1 cited

MiLe Loss: a New Entropy-Weighed Loss for Mitigating the Bias of Learning Difficulties in Large Language Models

Zhenpeng Su, Xing Wu, Xue Bai +5

Generative language models are usually pretrained on large text corpus via predicting the next token (i.e., sub-word/word/phrase) given the previous ones. Recent works have demonst…