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Xin Sun

48 accepted papers

2026

Edge Self-Adversarial Augmentation Enhances Graph Contrastive Learning Against Neighborhood Inconsistency

AAAI 2026technical

Recent studies have shown that unsupervised graph contrastive learning (GCL) is vulnerable to adversarial attacks. Automatic adversarial augmentation techniques are proposed to improve both the effectiveness and robustness of GCL. Existing methods typically regard unsupervised contrastive loss as th

Cited by 0SourcePDFScholar
2026

Fast Mixture of Curvature-Aware Experts for Diverse and Dynamic Graph Topologies

ICML 2026poster

Dynamic graph learning, which focuses on modeling the merging, vanishing, and reconnection of nodes and edges, is crucial for real-world applications. In dynamic graphs, node neighborhoods often exhibit diverse and time-evolving topologies, including hierarchical, grid-like, and cyclic patterns. Exi…

Cited by 0SourceScholar
2026

KBQA-R1: Reinforcing Large Language Models for Knowledge Base Question Answering

ICML 2026poster

Knowledge Base Question Answering (KBQA) challenges models to bridge the gap between natural language and strict knowledge graph schemas by generating executable logical forms. While Large Language Models (LLMs) have advanced this field, current approaches often struggle with a dichotomy of failure:…

Cited by 0SourceScholar
2026

Predict the Retrieval! Test Time Adaptation for Retrieval Augmented Generation

ICASSP 2026poster

Retrieval-Augmented Generation (RAG) has emerged as a powerful approach for enhancing large language models' question-answering capabilities through the integration of external knowledge. However, when adapting RAG systems to specialized domains, challenges arise from distribution shifts, resulting…

Cited by 0SourcePDFScholar
2026

State-Derivative-Aware Neural Controlled Differential Equations for Multivariate Time Series Anomaly Detection and Diagnosis

AAAI 2026technical

Multivariate time series anomaly detection is a crucial factor in real-world applications but a challenging task due to the complex temporal dependencies and system dynamics. Reconstruction-based methods have made great improvements in recent years. However, we observe an issue these methods are suf

Cited by 0SourcePDFScholar
2026

Stochastic Ray Tracing for the Reconstruction of 3D Gaussian Splatting

CVPR 2026

Ray-tracing-based 3D Gaussian splatting (3DGS) enjoys the generality of supporting non-pinhole camera models and relightable formulations. However, they are usually lacking in performance, partially due to the need for depth-based sorting of all intersecting Gaussians along the traced rays.In this p

Cited by 0SourcecodeScholar
2026

Tell Model Where to Look: Mitigating Hallucinations in MLLMs by Vision-Guided Attention

CVPR 2026

Visual attention serves as the primary mechanism through which MLLMs interpret visual information; however, its limited localization capability often leads to hallucinations. We observe that although MLLMs can accurately extract visual semantics from visual tokens, they fail to fully leverage this a

Cited by 0SourceScholar
2026

ToolWeaver: Weaving Collaborative Semantics for Scalable Tool Use in Large Language Models

ICLR 2026poster

Prevalent retrieval-based tool-use pipelines struggle with a dual semantic challenge: their retrievers often employ encoders that fail to capture complex semantics, while the Large Language Model (LLM) itself lacks intrinsic tool knowledge from its natural language pretraining. Generative methods of…

Cited by 0SourceScholar
2025

AuscMLLM: Bridging Classification and Reasoning in Heart Sound Analysis with a Multimodal Large Language Model

ICASSP 2025accepted

This study introduces a multimodal large language model capable of not only accomplishing various heart sound tasks but also providing reasoning, marking an advancement in the field of medical diagnostics. The model’s innovation stems from a collaboration with experts to collect a novel dataset desi…

Cited by 0SourceScholar
2025

Comprehensive Relighting: Generalizable and Consistent Monocular Human Relighting and Harmonization

CVPR 2025poster

This paper introduces Comprehensive Relighting, the first all-in-one approach that can both control and harmonize the lighting from an image or video of humans with arbitrary body parts from any scene. Building such a generalizable model is extremely challenging due to the lack of dataset, restricti…

Cited by 0SourcePDFScholar
2025

Conversational Education at Scale: A Multi-LLM Agent Workflow for Procedural Learning and Pedagogic Quality Assessment

EMNLP 2025

Large language models (LLMs) have advanced virtual educators and learners, bridging NLP with AI4Education. Existing work often lacks scalability and fails to leverage diverse, large-scale course content, with limited frameworks for assessing pedagogic quality. To this end, we propose WikiHowAgent, a

2025

Divide-Then-Align: Honest Alignment based on the Knowledge Boundary of RAG

ACL 2025long

Large language models (LLMs) augmented with retrieval systems have significantly advanced natural language processing tasks by integrating external knowledge sources, enabling more accurate and contextually rich responses. To improve the robustness of such systems against noisy retrievals, Retrieval…

Cited by 0SourcePDFScholar
2025

Few-shot Image Classification based on Attribute Prediction and Selection

ICASSP 2025accepted

Few-shot learning addresses the challenges of image classification with limited samples, but current methods often fail to fully utilize sample correlations and external semantic information, leading to low accuracy. To overcome these limitations, we propose a few-shot image classification method ba…

Cited by 0SourceScholar
2025

How Well Can Large Language Models Reflect? A Human Evaluation of LLM-generated Reflections for Motivational Interviewing Dialogues

COLING 2025main

Motivational Interviewing (MI) is a counseling technique that promotes behavioral change through reflective responses to mirror or refine client statements. While advanced Large Language Models (LLMs) can generate engaging dialogues, challenges remain for applying them in a sensitive context such as…

Cited by 1SourcePDFScholar
2025

MegaSynth: Scaling Up 3D Scene Reconstruction with Synthesized Data

CVPR 2025poster

We propose scaling up 3D scene reconstruction by training with synthesized data. At the core of our work is MegaSynth, a procedurally generated 3D dataset comprising 700K scenes - over 50 times larger than the prior real dataset DL3DV - dramatically scaling the training data. To enable scalable data…

Cited by 1SourcePDFScholar
2025

Mitigating Hallucination in Large Vision-Language Models through Aligning Attention Distribution to Information Flow

EMNLP 2025

Due to the unidirectional masking mechanism, Decoder-Only models propagate information from left to right. LVLMs (Large Vision-Language Models) follow the same architecture, with visual information gradually integrated into semantic representations during forward propagation. Through systematic anal

Cited by 0SourcePDFScholar
2025

Multi-view Consistent 3D Panoptic Scene Understanding

AAAI 2025technical

3D panoptic scene understanding seeks to create novel view images with 3D-consistent panoptic segmentation, which is crucial for many vision and robotics applications. Mainstream methods (e.g., Panoptic Lifting) directly use machine-generated 2D panoptic segmentation masks as training labels. Howeve…

Cited by 0SourcePDFScholar
2025

OTPNet: ODE-inspired Tuning-free Proximal Network for Remote Sensing Image Fusion

AAAI 2025technical

Remote sensing image fusion aims to reconstruct a high spatial and spectral resolution image by integrating the spatial and spectral information from multiple remote sensing sensor data. Despite the remarkable progress of deep learning-based fusion methods, most existing methods rely on manual netwo…

Cited by 0SourcePDFScholar
2025

Path-Adaptive Matting for Efficient Inference Under Various Computational Cost Constraints

AAAI 2025technical

In this paper, we explore a novel image matting task aimed at achieving efficient inference under various computational cost constraints, specifically FLOP limitations, using a single matting network. Existing matting methods which have not explored scalable architectures or path-learning strategies…

Cited by 0SourcePDFScholar
2025

Perm: A Parametric Representation for Multi-Style 3D Hair Modeling

ICLR 2025spotlight

We present Perm, a learned parametric representation of human 3D hair designed to facilitate various hair-related applications. Unlike previous work that jointly models the global hair structure and local curl patterns, we propose to disentangle them using a PCA-based strand representation in the fr…

2025

PreciseCam: Precise Camera Control for Text-to-Image Generation

CVPR 2025poster

Images as an artistic medium often rely on specific camera angles and lens distortions to convey ideas or emotions; however, such precise control is missing in current text-to-image models. We propose an efficient and general solution that allows precise control over the camera when generating both…

2025

Procedure Knowledge Decoupled Distillation Strategy for Procedure Planning in Instructional Videos

AAAI 2025technical

Procedure planning in instructional videos, producing a structured and plannable action sequence facilitating the transition from the start to the goal states, has achieved significant progress. The dominant single-branch non-autoregressive planning paradigm guides action sequence generation through…

2025

ProsodyTalker: 3D Visual Speech Animation via Prosody Decomposition

AAAI 2025technical

Most existing 3D visual speech animation methods synthesize lip movements synchronized with speech, which however neglect head poses and therefore degrade the animation realism. The animation of head poses presents two primary challenges: (1) the intricate mapping between speech and head poses remai…

Cited by 0SourcePDFScholar
2025

Rethinking the Alignment of Psychotherapy Dialogue Generation with Motivational Interviewing Strategies

COLING 2025main

Recent advancements in large language models (LLMs) have shown promise in generating psychotherapeutic dialogues, particularly in the context of motivational interviewing (MI). However, the inherent lack of transparency in LLM outputs presents significant challenges given the sensitive nature of psy…

Cited by 2SourcePDFScholar
2025

Self-Supervised Monocular Depth Estimation from Videos via Pose-Adaptive Reconstruction

ICASSP 2025accepted

Self-supervised depth estimation from videos involves predicting the depth map of a target frame and the pose changes between source and target frames. The reconstructed source frame is aligned with the target view using the predicted pose and depth information. Precise pose estimation significantly…

Cited by 0SourceScholar
2024

A Novel Multimodal Sentiment Analysis Model Based on Gated Fusion and Multi-Task Learning

ICASSP 2024accepted

Sentiment analysis is an important research area in Natural Language Processing (NLP). With the explosion of multimodal data, Multimodal Sentiment Analysis (MSA) attracts more and more attention in recent years. How to Effectively harnessing the interplay between diverse modalities is paramount to a…

Cited by 0SourceScholar
2024

Carve3D: Improving Multi-view Reconstruction Consistency for Diffusion Models with RL Finetuning

CVPR 2024poster

Multi-view diffusion models obtained by applying Supervised Finetuning (SFT) to text-to-image diffusion models have driven recent breakthroughs in text-to-3D research. However due to the limited size and quality of existing 3D datasets they still suffer from multi-view inconsistencies and Neural Rad…

2024

Eliciting Motivational Interviewing Skill Codes in Psychotherapy with LLMs: A Bilingual Dataset and Analytical Study

COLING 2024main

Behavioral coding (BC) in motivational interviewing (MI) holds great potential for enhancing the efficacy of MI counseling. However, manual coding is labor-intensive, and automation efforts are hindered by the lack of data due to the privacy of psychotherapy. To address these challenges, we introduc…

Cited by 10SourcePDFScholar
2024

HSDreport: Heart Sound Diagnosis with Echocardiography Reports

EMNLP 2024finding

Heart sound auscultation holds significant importance in the diagnosis of congenital heart disease. However, existing methods for Heart Sound Diagnosis (HSD) tasks are predominantly limited to a few fixed categories, framing the HSD task as a rigid classification problem that does not fully align wi…

Cited by 0SourcePDFScholar
2024

LRM-Zero: Training Large Reconstruction Models with Synthesized Data

NeurIPS 2024poster

We present LRM-Zero, a Large Reconstruction Model (LRM) trained entirely on synthesized 3D data, achieving high-quality sparse-view 3D reconstruction. The core of LRM-Zero is our procedural 3D dataset, Zeroverse, which is automatically synthesized from simple primitive shapes with random texturing a…

2024

Pin-Tuning: Parameter-Efficient In-Context Tuning for Few-Shot Molecular Property Prediction

NeurIPS 2024poster

Molecular property prediction (MPP) is integral to drug discovery and material science, but often faces the challenge of data scarcity in real-world scenarios. Addressing this, few-shot molecular property prediction (FSMPP) has been developed. Unlike other few-shot tasks, FSMPP typically employs a p…

2023

GAIT: Generating Aesthetic Indoor Tours with Deep Reinforcement Learning

ICCV 2023poster

Placing and orienting a camera to compose aesthetically meaningful shots of a scene is not only a key objective in real-world photography and cinematography but also for virtual content creation. The framing of a camera often significantly contributes to the story telling in movies, games, and mixed…

Cited by 3PDFcodeScholar
2023

GSLB: The Graph Structure Learning Benchmark

NeurIPS 2023poster

Graph Structure Learning (GSL) has recently garnered considerable attention due to its ability to optimize both the parameters of Graph Neural Networks (GNNs) and the computation graph structure simultaneously. Despite the proliferation of GSL methods developed in recent years, there is no standard…

2023

Noise-Robust Semi-Supervised Learning for Distantly Supervised Relation Extraction

EMNLP 2023long findings

Distantly supervised relation extraction (DSRE) aims to extract relational facts from texts but suffers from noisy instances. To mitigate the influence of noisy labels, current methods typically use the Multi-Instance-Learning framework to extract relations for each bag. However, these approaches a…

Cited by 0SourceScholar
2023

PixHt-Lab: Pixel Height Based Light Effect Generation for Image Compositing

CVPR 2023highlight

Lighting effects such as shadows or reflections are key in making synthetic images realistic and visually appealing. To generate such effects, traditional computer graphics uses a physically-based renderer along with 3D geometry. To compensate for the lack of geometry in 2D Image compositing, recent…

Cited by 22SourcePDFScholar
2022

A Repulsive Force Unit for Garment Collision Handling in Neural Networks

ECCV 2022poster

"Despite recent success, deep learning-based methods for predicting 3D garment deformation under body motion suffer from interpenetration problems between the garment and the body. To address this problem, we propose a novel collision handling neural network layer called Repulsive Force Unit (ReFU).…

Cited by 15SourcePDFScholar
2022

A Unified Strategy for Multilingual Grammatical Error Correction with Pre-trained Cross-Lingual Language Model

IJCAI 2022poster

Synthetic data construction of Grammatical Error Correction (GEC) for non-English languages relies heavily on human-designed and language-specific rules, which produce limited error-corrected patterns. In this paper, we propose a generic and language-independent strategy for multilingual GEC, which…

2022

Adjusting the Precision-Recall Trade-Off with Align-and-Predict Decoding for Grammatical Error Correction

ACL 2022short

Modern writing assistance applications are always equipped with a Grammatical Error Correction (GEC) model to correct errors in user-entered sentences. Different scenarios have varying requirements for correction behavior, e.g., performing more precise corrections (high precision) or providing more…

2022

Incorporating Hierarchy into Text Encoder: a Contrastive Learning Approach for Hierarchical Text Classification

ACL 2022long

Hierarchical text classification is a challenging subtask of multi-label classification due to its complex label hierarchy. Existing methods encode text and label hierarchy separately and mix their representations for classification, where the hierarchy remains unchanged for all input text. Instead…

2021

Instantaneous Grammatical Error Correction with Shallow Aggressive Decoding

ACL 2021long

In this paper, we propose Shallow Aggressive Decoding (SAD) to improve the online inference efficiency of the Transformer for instantaneous Grammatical Error Correction (GEC). SAD optimizes the online inference efficiency for GEC by two innovations: 1) it aggressively decodes as many tokens as possi…

2021

Relation-aware Video Reading Comprehension for Temporal Language Grounding

EMNLP 2021main

Temporal language grounding in videos aims to localize the temporal span relevant to the given query sentence. Previous methods treat it either as a boundary regression task or a span extraction task. This paper will formulate temporal language grounding into video reading comprehension and propose…

2020

Conditional Gaussian Distribution Learning for Open Set Recognition

CVPR 2020poster

Deep neural networks have achieved state-of-the-art performance in a wide range of recognition/classification tasks. However, when applying deep learning to real-world applications, there are still multiple challenges. A typical challenge is that unknown samples may be fed into the system during the…

Cited by 329PDFScholar
2020

Syntax-Aware Graph Attention Network for Aspect-Level Sentiment Classification

COLING 2020main

Aspect-level sentiment classification aims to distinguish the sentiment polarities over aspect terms in a sentence. Existing approaches mostly focus on modeling the relationship between the given aspect words and their contexts with attention, and ignore the use of more elaborate knowledge implicit…

2017

Non-Rigid Object Tracking via Deformable Patches Using Shape-Preserved KCF and Level Sets

ICCV 2017poster

Part-based trackers are effective in exploiting local details of the target object for robust tracking. In contrast to most existing part-based methods that divide all kinds of target objects into a number of fixed rectangular patches, in this paper, we propose a novel framework in which a set of de…

Cited by 26PDFScholar