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Chongjun Wang

22 accepted papers

2025

Inference Retrieval-Augmented Multi-Modal Chain-of-Thoughts Reasoning for Language Models

ICASSP 2025accepted

Recent advancements in Large Language Models (LLMs) have catalyzed the exploration of Chain of Thought (CoT) approaches, particularly in extending their application to multimodal tasks to enhance reasoning capabilities. However, current studies often fail to fully leverage the inferential capabiliti…

Cited by 0SourceScholar
2025

Knowledge Is Powerful: Art Knowledge-Driven Framework for Painting Style Classification Integrating Multimodal Knowledge

ICASSP 2025accepted

Paintings possess profound cultural and historical backgrounds. Unlike real-life images, they convey complex semantics beyond simple visual features. This diversity and complexity make painting style classification highly challenging, and many popular visual models struggle with it. To address this…

Cited by 0SourceScholar
2025

Normalize Then Propagate: Efficient Homophilous Regularization for Few-Shot Semi-Supervised Node Classification

AAAI 2025technical

Graph Neural Networks (GNNs) have demonstrated remarkable ability in semi-supervised node classification. However, most existing GNNs rely heavily on a large amount of labeled data for training, which is labor-intensive and requires extensive domain knowledge. In this paper, we first analyze the res…

2025

Regret Optimization Experience Replay in Off-Policy Reinforcement Learning

ICASSP 2025accepted

Experience Replay (ER) allows Deep Reinforcement Learning (RL) agent to reuse past experience, as though recall the same Experience repeatedly. ER enables RL algorithm to be trained by reusing previous states, so that RL agent can obtain more accurate value estimations and action selections. Current…

Cited by 0SourceScholar
2025

Robust Logit Adjustment for Learning with Long-Tailed Noisy Data

AAAI 2025technical

Learning with noisy labels (LNL) methods have enabled the deployment of machine learning systems with imperfectly labeled data. However, these methods often struggle to identify noise in the presence of long-tailed (LT) class distributions, where the memorization effect becomes class-dependent. Conv…

Cited by 0SourcePDFScholar
2025

Sparse Point Cloud Patches Rendering via Splitting 2D Gaussians

CVPR 2025poster

Current learning-based methods predict NeRF or 3D Gaussians from point clouds to achieve photo-realistic rendering but still depend on categorical priors, dense point clouds, or additional refinements. Hence, we introduce a novel point cloud rendering method by predicting 2D Gaussians from point clo…

2024

CASE: Exploiting Intra-class Compactness and Inter-class Separability of Feature Embeddings for Out-of-Distribution Detection

AAAI 2024technical

Detecting out-of-distribution (OOD) inputs is critical for reliable machine learning, but deep neural networks often make overconfident predictions, even for OOD inputs that deviate from the distribution of training data. Prior methods relied on the widely used softmax cross-entropy (CE) loss that i…

Cited by 3SourcePDFScholar
2024

DOS: Diverse Outlier Sampling for Out-of-Distribution Detection

ICLR 2024poster

Modern neural networks are known to give overconfident predictions for out-of-distribution inputs when deployed in the open world. It is common practice to leverage a surrogate outlier dataset to regularize the model during training, and recent studies emphasize the role of uncertainty in designing…

2024

FedCompetitors: Harmonious Collaboration in Federated Learning with Competing Participants

AAAI 2024technical

Federated learning (FL) provides a privacy-preserving approach for collaborative training of machine learning models. Given the potential data heterogeneity, it is crucial to select appropriate collaborators for each FL participant (FL-PT) based on data complementarity. Recent studies have addressed…

Cited by 6SourcePDFScholar
2024

Seeking Similarities While Removing Differences: Graph Neural Networks Based on Node Correlation

ICASSP 2024accepted

Graph neural networks (GNNs) have proven highly effective in handling graph-structured data. However, most existing GNNs rely on the homophily assumption, hindering their performance on heterophilic graphs. This limitation is partially due to aggregation containing irrelevant nodes. In this work, we…

Cited by 0SourceScholar
2024

Similarity-Navigated Conformal Prediction for Graph Neural Networks

NeurIPS 2024poster

Graph Neural Networks have achieved remarkable accuracy in semi-supervised node classification tasks. However, these results lack reliable uncertainty estimates. Conformal prediction methods provide a theoretical guarantee for node classification tasks, ensuring that the conformal prediction set con…

2024

Trustworthiness and Self-awareness in Large Language Models: An Exploration through the Think-Solve-Verify Framework

COLING 2024main

As Large Language Models (LLMs) become increasingly influential in reasoning tasks, ensuring their trustworthiness and introspective self-awareness is critical. This research introduces the Think-Solve-Verify (TSV) framework, an innovative strategy tailored to explore LLMs’ trustworthiness, introspe…

2023

Exploring Leximin Principle for Fair Core-Selecting Combinatorial Auctions: Payment Rule Design and Implementation

IJCAI 2023poster

Core-selecting combinatorial auctions (CAs) restrict the auction result in the core such that no coalitions could improve their utilities by engaging in collusion. The minimum-revenue-core (MRC) rule is a widely used core-selecting payment rule to maximize the total utilities of all bidders. However…

2023

READ: Aggregating Reconstruction Error into Out-of-Distribution Detection

AAAI 2023technical

Detecting out-of-distribution (OOD) samples is crucial to the safe deployment of a classifier in the real world. However, deep neural networks are known to be overconfident for abnormal data. Existing works directly design score function by mining the inconsistency from classifier for in-distributio…

2023

Symmetric Shape-Preserving Autoencoder for Unsupervised Real Scene Point Cloud Completion

CVPR 2023poster

Unsupervised completion of real scene objects is of vital importance but still remains extremely challenging in preserving input shapes, predicting accurate results, and adapting to multi-category data. To solve these problems, we propose in this paper an Unsupervised Symmetric Shape-Preserving Auto…

Cited by 18SourcePDFScholar
2023

Two Wrongs Don’t Make a Right: Combating Confirmation Bias in Learning with Label Noise

AAAI 2023technical

Noisy labels damage the performance of deep networks. For robust learning, a prominent two-stage pipeline alternates between eliminating possible incorrect labels and semi-supervised training. However, discarding part of noisy labels could result in a loss of information, especially when the corrup…

Cited by 32SourcePDFScholar
2022

Semi-supervised Learning with Multi-Head Co-Training

AAAI 2022technical

Co-training, extended from self-training, is one of the frameworks for semi-supervised learning. Without natural split of features, single-view co-training works at the cost of training extra classifiers, where the algorithm should be delicately designed to prevent individual classifiers from collap…

2022

Tailor Versatile Multi-Modal Learning for Multi-Label Emotion Recognition

AAAI 2022technical

Multi-modal Multi-label Emotion Recognition (MMER) aims to identify various human emotions from heterogeneous visual, audio and text modalities. Previous methods mainly focus on projecting multiple modalities into a common latent space and learning an identical representation for all labels, which n…

2022

Unsupervised Point Cloud Completion and Segmentation by Generative Adversarial Autoencoding Network

NeurIPS 2022accept

Most existing point cloud completion methods assume the input partial point cloud is clean, which is not practical in practice, and are Most existing point cloud completion methods assume the input partial point cloud is clean, which is not the case in practice, and are generally based on supervised…

Cited by 9SourcePDFScholar