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Heng Wang

45 accepted papers

2026

Improving Implicit Discourse Relation Recognition with Natural Language Explanations from LLMs

AAAI 2026technical

Implicit Discourse Relation Recognition (IDRR) remains a challenging task due to the requirement for deep semantic understanding in the absence of explicit discourse markers. A further limitation is that existing methods only predict relations without providing any supporting explanations. Recent ad

Cited by 0SourcePDFScholar
2026

Rethinking the Reranker: Boundary-Aware Evidence Selection for Robust Retrieval-Augmented Generation

ICML 2026poster

Retrieval-Augmented Generation (RAG) systems remain brittle under realistic retrieval noise, even when the required evidence appears in the top-$K$ results. A key reason is that retrievers and rerankers optimize solely for relevance, often selecting either trivial, answer-revealing passages or evide…

Cited by 0SourceScholar
2025

Autoregressive Pretraining with Mamba in Vision

ICLR 2025poster

The vision community has started to build with the recently developed state space model, Mamba, as the new backbone for a range of tasks. This paper shows that Mamba's visual capability can be significantly enhanced through autoregressive pretraining, a direction not previously explored. Efficiency-…

2025

CoSER: Coordinating LLM-Based Persona Simulation of Established Roles

ICML 2025poster

Role-playing language agents (RPLAs) have emerged as promising applications of large language models (LLMs). However, simulating established characters presents a challenging task for RPLAs, due to the lack of authentic character datasets and nuanced evaluation methods using such data. In this paper…

2025

Continuously Steering LLMs Sensitivity to Contextual Knowledge with Proxy Models

EMNLP 2025

In Large Language Models (LLMs) generation, there exist knowledge conflicts, and scenarios where parametric knowledge contradicts knowledge provided in the context. Previous works studied tuning, decoding algorithms, or locating and editing context-aware neurons to adapt LLMs to be faithful to new c

2025

GL-GAN: Perceiving and Integrating Global and Local Styles for Handwritten Text Generation with Mamba

COLING 2025main

Handwritten text generation (HTG) aims to synthesize handwritten samples by imitating a specific writer, which has a wide range of applications and thus has significant research value. However, current studies on HTG are confronted with a main bottleneck: dominant models lack the ability to perceive…

2025

HQ-Edit: A High-Quality Dataset for Instruction-based Image Editing

ICLR 2025poster

This study introduces HQ-Edit, a high-quality instruction-based image editing dataset with around 200,000 edits. Unlike prior approaches relying on attribute guidance or human feedback on building datasets, we devise a scalable data collection pipeline leveraging advanced foundation models, namely G…

Cited by 0SourcePDFScholar
2025

Multimodal Causal Reasoning Benchmark: Challenging Multimodal Large Language Models to Discern Causal Links Across Modalities

ACL 2025finding

Multimodal Large Language Models (MLLMs) have showcased exceptional Chain-of-Thought (CoT) reasoning ability in complex textual inference tasks including causal reasoning. However, will these causalities remain straightforward when crucial hints hide in visual details? If not, what factors might inf…

Cited by 0SourcePDFScholar
2025

OpenCUA: Open Foundations for Computer-Use Agents

NeurIPS 2025spotlight

Vision-language models have demonstrated impressive capabilities as computer-use agents (CUAs) capable of automating diverse computer tasks. As their commercial potential grows, critical details of the most capable CUA systems remain closed. As these agents will increasingly mediate digital interact…

Cited by 0SourceScholar
2025

ROS-SAM: High-Quality Interactive Segmentation for Remote Sensing Moving Object

CVPR 2025poster

The availability of large-scale remote sensing video data underscores the importance of high-quality interactive segmentation. However, challenges such as small object sizes, ambiguous features, and limited generalization make it difficult for current methods to achieve this goal. In this work, we p…

2025

Shot2Story: A New Benchmark for Comprehensive Understanding of Multi-shot Videos

ICLR 2025poster

A short clip of video may contain progression of multiple events and an interesting story line. A human need to capture both the event in every shot and associate them together to understand the story behind it. In this work, we present a new multi-shot video understanding benchmark \dataset with de…

Cited by 22SourcePDFScholar
2024

Advancements in 3D Lane Detection Using LiDAR Point Clouds: From Data Collection to Model Development

ICRA 2024poster

Advanced Driver-Assistance Systems (ADAS) have successfully integrated learning-based techniques into vehicle perception and decision-making. However, their application in 3D lane detection for effective driving environment perception is hindered by the lack of comprehensive LiDAR datasets. The spar…

Cited by 4SourcecodeScholar
2024

Can LLM Graph Reasoning Generalize beyond Pattern Memorization?

EMNLP 2024finding

Large language models (LLMs) demonstrate great potential for problems with implicit graphical structures, while recent works seek to enhance the graph reasoning capabilities of LLMs through specialized instruction tuning. The resulting “graph LLMs” are evaluated with in-distribution settings only, t…

2024

DELL: Generating Reactions and Explanations for LLM-Based Misinformation Detection

ACL 2024findings

Large language models are limited by challenges in factuality and hallucinations to be directly employed off-the-shelf for judging the veracity of news articles, where factual accuracy is paramount. In this work, we propose DELL that identifies three key stages in misinformation detection where LLMs…

2024

Enhancing Advanced Visual Reasoning Ability of Large Language Models

EMNLP 2024main

Recent advancements in Vision-Language (VL) research have sparked new benchmarks for complex visual reasoning, challenging models’ advanced reasoning ability. Traditional Vision-Language models (VLMs) perform well in visual perception tasks while struggling with complex reasoning scenarios. Converse…

Cited by 7SourcePDFScholar
2024

Explaining Datasets in Words: Statistical Models with Natural Language Parameters

NeurIPS 2024poster

To make sense of massive data, we often first fit simplified models and then interpret the parameters; for example, we cluster the text embeddings and then interpret the mean parameters of each cluster. However, these parameters are often high-dimensional and hard to interpret. To make model paramet…

2024

Stitching Segments and Sentences towards Generalization in Video-Text Pre-training

AAAI 2024technical

Video-language pre-training models have recently achieved remarkable results on various multi-modal downstream tasks. However, most of these models rely on contrastive learning or masking modeling to align global features across modalities, neglecting the local associations between video frames and…

Cited by 6SourcePDFScholar
2024

V2A-Mapper: A Lightweight Solution for Vision-to-Audio Generation by Connecting Foundation Models

AAAI 2024technical

Building artificial intelligence (AI) systems on top of a set of foundation models (FMs) is becoming a new paradigm in AI research. Their representative and generative abilities learnt from vast amounts of data can be easily adapted and transferred to a wide range of downstream tasks without extra t…

2024

VISTA-LLAMA: Reducing Hallucination in Video Language Models via Equal Distance to Visual Tokens

CVPR 2024poster

Recent advances in large video-language models have displayed promising outcomes in video comprehension. Current approaches straightforwardly convert video into language tokens and employ large language models for multi-modal tasks. However this method often leads to the generation of irrelevant con…

Cited by 16SourcePDFScholar
2024

Video Recognition in Portrait Mode

CVPR 2024poster

The creation of new datasets often presents new challenges for video recognition and can inspire novel ideas while addressing these challenges. While existing datasets mainly comprise landscape mode videos our paper seeks to introduce portrait mode videos to the research community and highlight the…

2023

Can Language Models Solve Graph Problems in Natural Language?

NeurIPS 2023spotlight

Large language models (LLMs) are increasingly adopted for a variety of tasks with implicit graphical structures, such as planning in robotics, multi-hop question answering or knowledge probing, structured commonsense reasoning, and more. While LLMs have advanced the state-of-the-art on these tasks w…

2023

One Is All: Bridging the Gap between Neural Radiance Fields Architectures with Progressive Volume Distillation

AAAI 2023technical

Neural Radiance Fields (NeRF) methods have proved effective as compact, high-quality and versatile representations for 3D scenes, and enable downstream tasks such as editing, retrieval, navigation, etc. Various neural architectures are vying for the core structure of NeRF, including the plain Multi…

2023

PAniC-3D: Stylized Single-View 3D Reconstruction From Portraits of Anime Characters

CVPR 2023poster

We propose PAniC-3D, a system to reconstruct stylized 3D character heads directly from illustrated (p)ortraits of (ani)me (c)haracters. Our anime-style domain poses unique challenges to single-view reconstruction; compared to natural images of human heads, character portrait illustrations have hair…

Cited by 21SourcePDFScholar
2023

R2Former: Unified Retrieval and Reranking Transformer for Place Recognition

CVPR 2023highlight

Visual Place Recognition (VPR) estimates the location of query images by matching them with images in a reference database. Conventional methods generally adopt aggregated CNN features for global retrieval and RANSAC-based geometric verification for reranking. However, RANSAC only employs geometric…

2023

Revisit Finetuning strategy for Few-Shot Learning to Transfer the Emdeddings

ICLR 2023poster

Few-Shot Learning (FSL) aims to learn a simple and effective bias on limited novel samples. Recently, many methods have been focused on re-training a randomly initialized linear classifier to adapt it to the novel features extracted by the pre-trained feature extractor (called Linear-Probing-based m…

2023

Why Is Prompt Tuning for Vision-Language Models Robust to Noisy Labels?

ICCV 2023poster

Vision-language models such as CLIP learn a generic text-image embedding from large-scale training data. A vision-language model can be adapted to a new classification task through few-shot prompt tuning. We find that such prompt tuning process is highly robust to label noises. This intrigues us to…

Cited by 19PDFcodeScholar
2022

3-D Electromagnetic Position Estimation System Using High-Magnetic-Permeability Metal for Continuum Medical Robots

RA-L 2022

In this letter, a new 3-D electromagnetic position sensing method is proposed for localization of continuum medical robots. An electromagnet and magnetic sensors are placed outside the human body while only a piece of passive mu-metal with high magnetic permeability is attached to the robot moving i

Cited by 18SourceScholar
2022

A Deep-Learning-based System for Indoor Active Cleaning

IROS 2022poster

Cleaning public areas like commercial complexes is challenging due to their sophisticated surroundings and the vast kinds of real-life dirt. Robots are required to distinguish dirts and apply corresponding cleaning strategies. In this work, we proposed an active-cleaning framework by utilizing deep-…

Cited by 2SourcecodeScholar
2022

Open-World Instance Segmentation: Exploiting Pseudo Ground Truth From Learned Pairwise Affinity

CVPR 2022poster

Open-world instance segmentation is the task of grouping pixels into object instances without any pre-determined taxonomy. This is challenging, as state-of-the-art methods rely on explicit class semantics obtained from large labeled datasets, and out-of-domain evaluation performance drops significan…

Cited by 54PDFcodeScholar
2022

Spatiality-guided Transformer for 3D Dense Captioning on Point Clouds

IJCAI 2022poster

Dense captioning in 3D point clouds is an emerging vision-and-language task involving object-level 3D scene understanding. Apart from coarse semantic class prediction and bounding box regression as in traditional 3D object detection, 3D dense captioning aims at producing a further and finer instance…

2022

TwiBot-22: Towards Graph-Based Twitter Bot Detection

NeurIPS 2022accept

Twitter bot detection has become an increasingly important task to combat misinformation, facilitate social media moderation, and preserve the integrity of the online discourse. State-of-the-art bot detection methods generally leverage the graph structure of the Twitter network, and they exhibit pro…

2021

Beyond Short Clips: End-to-End Video-Level Learning With Collaborative Memories

CVPR 2021poster

The standard way of training video models entails sampling at each iteration a single clip from a video and optimizing the clip prediction with respect to the video-level label. We argue that a single clip may not have enough temporal coverage to exhibit the label to recognize, since video datasets…

Cited by 28PDFScholar
2021

Is Space-Time Attention All You Need for Video Understanding?

ICML 2021spotlight

We present a convolution-free approach to video classification built exclusively on self-attention over space and time. Our method, named “TimeSformer,” adapts the standard Transformer architecture to video by enabling spatiotemporal feature learning directly from a sequence of frame-level patches.…

2021

Searching for Two-Stream Models in Multivariate Space for Video Recognition

ICCV 2021poster

Conventional video models rely on a single stream to capture the complex spatial-temporal features. Recent work on two-stream video models, such as SlowFast network and AssembleNet, prescribe separate streams to learn complementary features, and achieve stronger performance. However, manually design…

Cited by 11PDFScholar
2019

Video Classification With Channel-Separated Convolutional Networks

ICCV 2019poster

Group convolution has been shown to offer great computational savings in various 2D convolutional architectures for image classification. It is natural to ask: 1) if group convolution can help to alleviate the high computational cost of video classification networks; 2) what factors matter the most…

Cited by 784PDFcodeScholar
2018

A Closer Look at Spatiotemporal Convolutions for Action Recognition

CVPR 2018poster

In this paper we discuss several forms of spatiotemporal convolutions for video analysis and study their effects on action recognition. Our motivation stems from the observation that 2D CNNs applied to individual frames of the video have remained solid performers in action recognition. In this work…

2018

Scenes-Objects-Actions: A Multi-Task, Multi-Label Video Dataset

ECCV 2018poster

This paper introduces a large-scale, multi-label and multitask video dataset named Scenes-Objects-Actions (SOA). Most prior video datasets are based on a predened taxonomy, which is used to de- ne the keyword queries issued to search engines. The videos retrieved by the search engines are then verie…

Cited by 38SourcePDFScholar