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Haofen Wang

15 accepted papers

2026

CitySeeker: How Do VLMs Explore Embodied Urban Navigation with Implicit Human Needs?

ICLR 2026poster

Vision-Language Models (VLMs) have made significant progress in explicit instruction-based navigation; however, their ability to interpret implicit human needs (e.g., ''I am thirsty'') in dynamic urban environments remains underexplored. This paper introduces CitySeeker, a novel benchmark designed t…

Cited by 0SourcecodeScholar
2026

KaLM-Embedding-V2: Superior Training Techniques and Data Inspire A Versatile Embedding Model

ICLR 2026poster

Recent advancements in Large Language Models (LLMs)-based text embedding models primarily focus on data scaling or synthesis, yet limited exploration of training techniques and data quality, thereby constraining performance. In this work, we propose KaLM-Embedding-V2, a series of versatile and compa…

Cited by 0SourcecodeScholar
2026

StressEval: Failure-Driven Dynamic Benchmarking for Knowledge-Intensive Reasoning in Large Language Models

IJCAI 2026

Static benchmarks for LLMs are increasingly compromised by contamination and overfitting, especially on knowledge-intensive reasoning tasks. While recent dynamic benchmarks can alleviate staleness, they often increase difficulty at the expense of answerability and controllability. In this paper, we

Cited by 0Scholar
2026

Thinker: Training LLMs in Hierarchical Thinking for Deep Search via Multi-Turn Interaction

AAAI 2026technical

Efficient retrieval of external knowledge bases and web pages is crucial for enhancing the reasoning abilities of LLMs. Previous works on training LLMs to leverage external retrievers for solving complex problems have predominantly employed end-to-end reinforcement learning. However, these approache

Cited by 0SourcePDFScholar
2025

Cognitive Bias and Reassignment: Who Can Contribute High Quality LLM Data

AAAI 2025technical

In recent years, the rapid development of Large Language Models has highlighted the urgent need for large-scale, high-quality, and diverse data. We have launched an LLM data co-creation platform aimed at bringing together a wide range of participants to contribute data. Within six months, the platfo…

Cited by 0SourcePDFScholar
2025

Large Language Models Meet Knowledge Graphs for Question Answering: Synthesis and Opportunities

EMNLP 2025

Large language models (LLMs) have demonstrated remarkable performance on question-answering (QA) tasks because of their superior capabilities in natural language understanding and generation. However, LLM-based QA struggles with complex QA tasks due to poor reasoning capacity, outdated knowledge, an

2025

ODDA: An OODA-Driven Diverse Data Augmentation Framework for Low-Resource Relation Extraction

ACL 2025finding

Data Augmentation (DA) has emerged as a promising solution to address the scarcity of high-quality annotated data in low-resource relation extraction (LRE). Leveraging large language models (LLMs), DA has significantly improved the performance of RE models with considerably fewer parameters. However…

2025

ReSearch: Learning to Reason with Search for LLMs via Reinforcement Learning

NeurIPS 2025poster

Large Language Models (LLMs) have shown remarkable capabilities in reasoning, exemplified by the success of OpenAI-o1 and DeepSeek-R1. However, integrating reasoning with external search processes remains challenging, especially for complex multi-hop questions requiring multiple retrieval steps. We…

Cited by 0SourceScholar
2025

Uncertain Knowledge Graph Completion via Semi-Supervised Confidence Distribution Learning

NeurIPS 2025spotlight

Uncertain knowledge graphs (UKGs) associate each triple with a confidence score to provide more precise knowledge representations. Recently, since real-world UKGs suffer from the incompleteness, uncertain knowledge graph (UKG) completion attracts more attention, aiming to complete missing triples an…

Cited by 0SourceScholar
2024

A User-Friendly Framework for Generating Model-Preferred Prompts in Text-to-Image Synthesis

AAAI 2024technical

Well-designed prompts have demonstrated the potential to guide text-to-image models in generating amazing images. Although existing prompt engineering methods can provide high-level guidance, it is challenging for novice users to achieve the desired results by manually entering prompts due to a disc…

2024

Construction and Application of Materials Knowledge Graph in Multidisciplinary Materials Science via Large Language Model

NeurIPS 2024poster

Knowledge in materials science is widely dispersed across extensive scientific literature, posing significant challenges for efficient discovery and integration of new materials. Traditional methods, often reliant on costly and time-consuming experimental approaches, further complicate rapid innovat…

Cited by 4SourcePDFScholar
2024

Rewarding What Matters: Step-by-Step Reinforcement Learning for Task-Oriented Dialogue

EMNLP 2024finding

Reinforcement learning (RL) is a powerful approach to enhance task-oriented dialogue (TOD) systems. However, existing RL methods tend to mainly focus on generation tasks, such as dialogue policy learning (DPL) or response generation (RG), while neglecting dialogue state tracking (DST) for understand…

Cited by 1SourcePDFScholar
2024

Towards Proactive Interactions for In-Vehicle Conversational Assistants Utilizing Large Language Models

IJCAI 2024poster

Research demonstrates that the proactivity of in-vehicle conversational assistants (IVCAs) can help to reduce distractions and enhance driving safety, better meeting users' cognitive needs. However, existing IVCAs struggle with user intent recognition and context awareness, which leads to suboptimal…

2022

Position-aware Joint Entity and Relation Extraction with Attention Mechanism

IJCAI 2022poster

Named entity recognition and relation extraction are two important core subtasks of information extraction, which aim to identify named entities and extract relations between them. In recent years, span representation methods have received a lot of attention and are widely used to extract entities a…

Cited by 6SourcePDFScholar