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Zixuan Li

32 accepted papers

2026

BiasBusters: Uncovering and Mitigating Tool Selection Bias in Large Language Models

ICLR 2026poster

Agents backed by large language models (LLMs) often rely on external tools drawn from marketplaces where multiple providers offer functionally equivalent options. This raises a critical point concerning fairness: if selection is systematically biased, it can degrade user experience and distort compe…

Cited by 0SourcecodeScholar
2026

Emotion and Intention Guided Multi-Modal Learning for Sticker Response Selection

AAAI 2026technical

Stickers are widely used in online communication to convey emotions and implicit intentions. The Sticker Response Selection (SRS) task aims to select the most contextually appropriate sticker based on the dialogue. However, existing methods typically rely on semantic matching and model emotional and

Cited by 0SourcePDFScholar
2026

Explicit Modeling of Causal Factors and Confounders for Image Classification

AAAI 2026technical

Causal inference has emerged as a promising approach for identifying decisive semantic factors and eliminating spurious correlations in visual representation learning. However, most existing methods rely on latent, data-driven confounder modeling, normally attributing the source of bias to backgroun

Cited by 0SourcePDFScholar
2026

InfBaGel: Human-Object-Scene Interaction Generation with Dynamic Perception and Iterative Refinement

ICLR 2026poster

Human–object–scene interactions (HOSI) generation has broad applications in embodied AI, simulation, and animation. Unlike human–object interaction (HOI) and human–scene interaction (HSI), HOSI generation requires reasoning over dynamic object–scene changes, yet suffers from limited annotated data.…

Cited by 0SourceScholar
2026

MedREK: Retrieval-Based Editing for Medical LLMs with Key-Aware Prompts

ICML 2026poster

LLMs hold great promise for healthcare applications, but fast-changing medical knowledge can quickly make their outputs outdated or inaccurate, limiting use in high-stakes settings. Model editing can update LLMs without full retraining, but parameter-based methods often break locality and are risky …

Cited by 0SourceScholar
2026

RoboTwin 2.0: A Scalable Data Generator and Benchmark with Strong Domain Randomization for Robust Bimanual Robotic Manipulation

ICML 2026poster

Simulation-based data synthesis has emerged as a powerful paradigm for enhancing real-world robotic manipulation. However, existing synthetic datasets remain insufficient for robust bimanual manipulation due to two key challenges: (1) the lack of an autonomous self-correcting mechanism to resolve ex…

Cited by 0SourceScholar
2026

TWO-STAGE AUDIO-VISUAL TARGET SPEAKER EXTRACTION SYSTEM FOR REAL-TIME PROCESSING ON EDGE DEVICE

ICASSP 2026poster

Audio-Visual Target Speaker Extraction (AVTSE) aims to isolate a target speaker's voice in a multi-speaker environment with visual cues as auxiliary. Most of the existing AVTSE methods encode visual and audio features simultaneously, resulting in extremely high computational complexity and making it…

Cited by 0SourcePDFScholar
2025

AgentCourt: Simulating Court with Adversarial Evolvable Lawyer Agents

ACL 2025finding

Current research in LLM-based simulation systems lacks comprehensive solutions for modeling real-world court proceedings, while existing legal language models struggle with dynamic courtroom interactions. We present **AgentCourt**, a comprehensive legal simulation framework that addresses these chal…

2025

D-RAG: Differentiable Retrieval-Augmented Generation for Knowledge Graph Question Answering

EMNLP 2025

Knowledge Graph Question Answering (KGQA) aims to answer natural language questions based on knowledge graphs.Recent approaches apply the Retrieval-Augmented Generation (RAG) paradigm to incorporate Large Language Models (LLMs) to this task, where a retriever selects a question-related subgraph and

Cited by 0SourcePDFScholar
2025

Empowering Vision Transformers with Multi-Scale Causal Intervention for Long-Tailed Image Classification

IJCAI 2025

Causal inference has emerged as a promising approach to mitigate long-tail classification by handling the biases introduced by class imbalance. However, along with the change of advanced backbone models from Convolutional Neural Networks (CNNs) to Visual Transformers (ViT), existing causal models ma

Cited by 0SourcePDFScholar
2025

G2S: A General-to-Specific Learning Framework for Temporal Knowledge Graph Forecasting with Large Language Models

ACL 2025finding

Forecasting over Temporal Knowledge Graphs (TKGs) which predicts future facts based on historical ones has received much attention. Recent studies have introduced Large Language Models (LLMs) for this task to enhance the models’ generalization abilities. However, these models perform forecasting via…

2025

KnowCoder-X: Boosting Multilingual Information Extraction via Code

ACL 2025finding

Empirical evidence indicates that LLMs exhibit spontaneous cross-lingual alignment. However, although LLMs show promising cross-lingual alignment in Information Extraction (IE), a significant imbalance across languages persists, highlighting an underlying deficiency. To address this, we propose Know…

2025

Large Language Model-Based Event Relation Extraction with Rationales

COLING 2025main

Event Relation Extraction (ERE) aims to extract various types of relations between different events within texts. Although Large Language Models (LLMs) have demonstrated impressive capabilities in many natural language processing tasks, existing ERE methods based on LLMs still face three key challen…

2025

SLoW: Select Low-frequency Words! Automatic Dictionary Selection for Translation on Large Language Models

EMNLP 2025

There are more than 7,000 languages around the world, and current Large Language Models (LLMs) only support hundreds of languages. Dictionary-based prompting methods can enhance translation on them, but most methods use all the available dictionaries, which could be expensive. Instead, it will be fl

2025

Semantic-Space-Intervened Diffusive Alignment for Visual Classification

IJCAI 2025

Cross-modal alignment is an effective approach to improving visual classification. Existing studies typically enforce a one-step mapping that uses deep neural networks to project the visual features to mimic the distribution of textual features. However, they typically face difficulties in finding s

Cited by 2SourcePDFScholar
2025

Towards Event Extraction with Massive Types: LLM-based Collaborative Annotation and Partitioning Extraction

EMNLP 2025

Developing a general-purpose system that can extract events with massive types is a long-standing target in Event Extraction (EE). In doing so, the basic challenge comes from the absence of an efficient and effective annotation framework to construct the corresponding datasets. In this paper, we pro

2025

Towards Robust Universal Information Extraction: Dataset, Evaluation, and Solution

ACL 2025long

In this paper, we aim to enhance the robustness of Universal Information Extraction (UIE) by introducing a new benchmark dataset, a comprehensive evaluation, and a feasible solution. Existing robust benchmark datasets have two key limitations: 1) They generate only a limited range of perturbations f…

2024

A New Pipeline for Knowledge Graph Reasoning Enhanced by Large Language Models Without Fine-Tuning

EMNLP 2024main

Conventional Knowledge Graph Reasoning (KGR) models learn the embeddings of KG components over the structure of KGs, but their performances are limited when the KGs are severely incomplete. Recent LLM-enhanced KGR models input KG structural information into LLMs. However, they require fine-tuning on…

2024

DQ-LoRe: Dual Queries with Low Rank Approximation Re-ranking for In-Context Learning

ICLR 2024poster

Recent advances in natural language processing, primarily propelled by Large Language Models (LLMs), have showcased their remarkable capabilities grounded in in-context learning. A promising avenue for guiding LLMs in intricate reasoning tasks involves the utilization of intermediate reasoning steps…

2024

Nested Event Extraction upon Pivot Element Recognition

COLING 2024main

Nested Event Extraction (NEE) aims to extract complex event structures where an event contains other events as its arguments recursively. Nested events involve a kind of Pivot Elements (PEs) that simultaneously act as arguments of outer-nest events and as triggers of inner-nest events, and thus conn…

2024

Selective Temporal Knowledge Graph Reasoning

COLING 2024main

Temporal Knowledge Graph (TKG), which characterizes temporally evolving facts in the form of (subject, relation, object, timestamp), has attracted much attention recently. TKG reasoning aims to predict future facts based on given historical ones. However, existing TKG reasoning models are unable to…

Cited by 1SourcePDFScholar
2024

Self-Improvement Programming for Temporal Knowledge Graph Question Answering

COLING 2024main

Temporal Knowledge Graph Question Answering (TKGQA) aims to answer questions with temporal intent over Temporal Knowledge Graphs (TKGs). The core challenge of this task lies in understanding the complex semantic information regarding multiple types of time constraints (e.g., before, first) in questi…

Cited by 9SourcePDFScholar
2024

Unlocking the Power of Large Language Models for Entity Alignment

ACL 2024long

Entity Alignment (EA) is vital for integrating diverse knowledge graph (KG) data, playing a crucial role in data-driven AI applications. Traditional EA methods primarily rely on comparing entity embeddings, but their effectiveness is constrained by the limited input KG data and the capabilities of t…

2023

Rich Event Modeling for Script Event Prediction

AAAI 2023technical

Script is a kind of structured knowledge extracted from texts, which contains a sequence of events. Based on such knowledge, script event prediction aims to predict the subsequent event. To do so, two aspects should be considered for events, namely, event description (i.e., what the events should co…

2023

Semantic Structure Enhanced Event Causality Identification

ACL 2023long

Event Causality Identification (ECI) aims to identify causal relations between events in unstructured texts. This is a very challenging task, because causal relations are usually expressed by implicit associations between events. Existing methods usually capture such associations by directly modelin…

2023

Temporal Knowledge Graph Reasoning Based on N-tuple Modeling

EMNLP 2023long findings

Reasoning over Temporal Knowledge Graphs (TKGs) that predicts temporal facts (e.g., events) in the future is crucial for many applications. The temporal facts in existing TKGs only contain their core entities (i.e., the entities playing core roles therein) and formulate them as quadruples, i.e., (su…

Cited by 0SourceScholar
2022

Complex Evolutional Pattern Learning for Temporal Knowledge Graph Reasoning

ACL 2022short

A Temporal Knowledge Graph (TKG) is a sequence of KGs corresponding to different timestamps. TKG reasoning aims to predict potential facts in the future given the historical KG sequences. One key of this task is to mine and understand evolutional patterns of facts from these sequences. The evolution…

2022

HiSMatch: Historical Structure Matching based Temporal Knowledge Graph Reasoning

EMNLP 2022finding

A Temporal Knowledge Graph (TKG) is a sequence of KGs with respective timestamps, which adopts quadruples in the form of (subject, relation, object, timestamp) to describe dynamic facts. TKG reasoning has facilitated many real-world applications via answering such queries as (query entity, query rel…

2021

Integrating Deep Event-Level and Script-Level Information for Script Event Prediction

EMNLP 2021main

Scripts are structured sequences of events together with the participants, which are extracted from the texts. Script event prediction aims to predict the subsequent event given the historical events in the script. Two kinds of information facilitate this task, namely, the event-level information an…

2021

Search from History and Reason for Future: Two-stage Reasoning on Temporal Knowledge Graphs

ACL 2021long

Temporal Knowledge Graphs (TKGs) have been developed and used in many different areas. Reasoning on TKGs that predicts potential facts (events) in the future brings great challenges to existing models. When facing a prediction task, human beings usually search useful historical information (i.e., cl…

Cited by 132SourcePDFScholar