activity
20192026
most citedWord-level Textual Adversarial Attacking as Combinatorial Optimization

193 citations · 656 across the 39 of their papers we have counts for

collaborators

41 papers

cs.AI2026

From Context to Skills: Can Language Models Learn from Context Skillfully?

Shuzheng Si, Haozhe Zhao, Yu Lei +10

Many real-world tasks require language models (LMs) to reason over complex contexts that exceed their parametric knowledge. This calls for context learning, where LMs directly lear…

cs.CL2026

InFi-Check: Interpretable and Fine-Grained Fact-Checking of LLMs

Yuzhuo Bai, Shuzheng Si, Kangyang Luo +5

Large language models (LLMs) often hallucinate, yet most existing fact-checking methods treat factuality evaluation as a binary classification problem, offering limited interpretab…

cs.CL2026

From Context to EDUs: Faithful and Structured Context Compression via Elementary Discourse Unit Decomposition

Yiqing Zhou, Yu Lei, Shuzheng Si +7

Managing extensive context remains a critical bottleneck for Large Language Models (LLMs), particularly in applications like long-document question answering and autonomous agents…

cs.CL2025

FaithLens: Detecting and Explaining Faithfulness Hallucination

Shuzheng Si, Qingyi Wang, Haozhe Zhao +8

Recognizing whether outputs from large language models (LLMs) contain faithfulness hallucination is crucial for real-world applications, e.g., retrieval-augmented generation and su…

cs.CL2025

RhinoInsight: Improving Deep Research through Control Mechanisms for Model Behavior and Context

Yu Lei, Shuzheng Si, Wei Wang +4

Large language models are evolving from single-turn responders into tool-using agents capable of sustained reasoning and decision-making for deep research. Prevailing systems adopt…

cs.CL2025

A Goal Without a Plan Is Just a Wish: Efficient and Effective Global Planner Training for Long-Horizon Agent Tasks

Shuzheng Si, Haozhe Zhao, Kangyang Luo +5

Agents based on large language models (LLMs) struggle with brainless trial-and-error and generating hallucinatory actions due to a lack of global planning in long-horizon tasks. In…

cs.AI2025

WGRAMMAR: Leverage Prior Knowledge to Accelerate Structured Decoding

Ran Wang, Xiaoxuan Liu, Hao Ren +3

Structured decoding enables large language models (LLMs) to generate outputs in formats required by downstream systems, such as HTML or JSON. However, existing methods suffer from…

cs.CL2025

Teaching Large Language Models to Maintain Contextual Faithfulness via Synthetic Tasks and Reinforcement Learning

Shuzheng Si, Haozhe Zhao, Cheng Gao +11

Teaching large language models (LLMs) to be faithful in the provided context is crucial for building reliable information-seeking systems. Therefore, we propose a systematic framew…

cs.CL2025★ 3 cited

Aligning Large Language Models to Follow Instructions and Hallucinate Less via Effective Data Filtering

Shuzheng Si, Haozhe Zhao, Gang Chen +9

Training LLMs on data containing unfamiliar knowledge during the instruction tuning stage can encourage hallucinations. To address this challenge, we introduce NOVA, a novel framew…

cs.CL2024

GATEAU: Selecting Influential Samples for Long Context Alignment

Shuzheng Si, Haozhe Zhao, Gang Chen +7

Aligning large language models to handle instructions with extremely long contexts has yet to be fully investigated. Previous studies have attempted to scale up the available data…

cs.CL2023★ 3 cited

WebCPM: Interactive Web Search for Chinese Long-form Question Answering

Yujia Qin, Zihan Cai, Dian Jin +12

Long-form question answering (LFQA) aims at answering complex, open-ended questions with detailed, paragraph-length responses. The de facto paradigm of LFQA necessitates two proced…

cs.CL2023★ 92 cited

C-Eval: A Multi-Level Multi-Discipline Chinese Evaluation Suite for Foundation Models

Yuzhen Huang, Yuzhuo Bai, Zhihao Zhu +10

New NLP benchmarks are urgently needed to align with the rapid development of large language models (LLMs). We present C-Eval, the first comprehensive Chinese evaluation suite desi…

cs.CL2022★ 2 cited

Why Should Adversarial Perturbations be Imperceptible? Rethink the Research Paradigm in Adversarial NLP

Yangyi Chen, Hongcheng Gao, Ganqu Cui +4

Textual adversarial samples play important roles in multiple subfields of NLP research, including security, evaluation, explainability, and data augmentation. However, most work mi…

cs.CL2022

Sememe Prediction for BabelNet Synsets using Multilingual and Multimodal Information

Fanchao Qi, Chuancheng Lv, Zhiyuan Liu +3

In linguistics, a sememe is defined as the minimum semantic unit of languages. Sememe knowledge bases (KBs), which are built by manually annotating words with sememes, have been su…

cs.CL2022

QuoteR: A Benchmark of Quote Recommendation for Writing

Fanchao Qi, Yanhui Yang, Jing Yi +3

It is very common to use quotations (quotes) to make our writings more elegant or convincing. To help people find appropriate quotes efficiently, the task of quote recommendation i…

cs.CL2021★ 7 cited

CUGE: A Chinese Language Understanding and Generation Evaluation Benchmark

Yuan Yao, Qingxiu Dong, Jian Guan +32

Realizing general-purpose language intelligence has been a longstanding goal for natural language processing, where standard evaluation benchmarks play a fundamental and guiding ro…

cs.CL2021★ 3 cited

Mind the Style of Text! Adversarial and Backdoor Attacks Based on Text Style Transfer

Fanchao Qi, Yangyi Chen, Xurui Zhang +3

Adversarial attacks and backdoor attacks are two common security threats that hang over deep learning. Both of them harness task-irrelevant features of data in their implementation…

cs.CR2021★ 1 cited

Textual Backdoor Attacks Can Be More Harmful via Two Simple Tricks

Yangyi Chen, Fanchao Qi, Hongcheng Gao +2

Backdoor attacks are a kind of emergent security threat in deep learning. After being injected with a backdoor, a deep neural model will behave normally on standard inputs but give…

cs.CL2021★ 15 cited

CPM-2: Large-scale Cost-effective Pre-trained Language Models

Zhengyan Zhang, Yuxian Gu, Xu Han +16

In recent years, the size of pre-trained language models (PLMs) has grown by leaps and bounds. However, efficiency issues of these large-scale PLMs limit their utilization in real-…

cs.CL2021★ 9 cited

Turn the Combination Lock: Learnable Textual Backdoor Attacks via Word Substitution

Fanchao Qi, Yuan Yao, Sophia Xu +2

Recent studies show that neural natural language processing (NLP) models are vulnerable to backdoor attacks. Injected with backdoors, models perform normally on benign examples but…

cs.CL2021★ 7 cited

CCPM: A Chinese Classical Poetry Matching Dataset

Wenhao Li, Fanchao Qi, Maosong Sun +2

Poetry is one of the most important art forms of human languages. Recently many studies have focused on incorporating some linguistic features of poetry, such as style and sentimen…

cs.CL2021

Automatic Construction of Sememe Knowledge Bases via Dictionaries

Fanchao Qi, Yangyi Chen, Fengyu Wang +3

A sememe is defined as the minimum semantic unit in linguistics. Sememe knowledge bases (SKBs), which comprise words annotated with sememes, enable sememes to be applied to natural…

cs.CL2021★ 13 cited

Hidden Killer: Invisible Textual Backdoor Attacks with Syntactic Trigger

Fanchao Qi, Mukai Li, Yangyi Chen +4

Backdoor attacks are a kind of insidious security threat against machine learning models. After being injected with a backdoor in training, the victim model will produce adversary-…

cs.CL2021★ 3 cited

Sub-Character Tokenization for Chinese Pretrained Language Models

Chenglei Si, Zhengyan Zhang, Yingfa Chen +6

Tokenization is fundamental to pretrained language models (PLMs). Existing tokenization methods for Chinese PLMs typically treat each character as an indivisible token. However, th…