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Renchu Guan

15 accepted papers

2026

Differential Fine-Tuning Large Language Models Towards Better Diverse Reasoning Abilities

ICLR 2026poster

Reasoning abilities of large language models (LLMs) require explicit derivations compared to general question-answering, supervised fine-tuning (SFT) can empower multiple reasoning abilities in LLMs via learning from various datasets. However, neither training the datasets jointly (mix-up) nor conti…

Cited by 0SourcecodeScholar
2026

SPARD: Single-step Inference with Adaptive Sampling in Residual Diffusion for Human Motion Prediction

AAAI 2026technical

The task of stochastic human motion prediction has attracted significant attention in recent years due to its wide-ranging applications in robotics, animation, and human-computer interaction. While diffusion models have demonstrated promising progress in this domain, they remain hindered by two crit

Cited by 0SourcePDFScholar
2026

Semi-Supervised Regression by Preserving Ranking Relationships Between Close Unlabeled Samples

AAAI 2026technical

Semi-Supervised Learning (SSL) aims to improve the learning performance of supervised learning with a large number of unlabeled samples. The existing SSL methods such as FixMatch and FlexMatch select unlabeled samples with high-confident pseudo-labels and make consistency constraints between their w

Cited by 0SourcePDFScholar
2025

A Simple Graph Contrastive Learning Framework for Short Text Classification

AAAI 2025technical

Short text classification has gained significant attention in the information age due to its prevalence and real-world applications. Recent advancements in graph learning combined with contrastive learning have shown promising results in addressing the challenges of semantic sparsity and limited lab…

2025

Balancing Positive and Negative Classification Error Rates in Positive-Unlabeled Learning

NeurIPS 2025poster

Positive and Unlabeled (PU) learning is a special case of binary classification with weak supervision, where only positive labeled and unlabeled data are available. Previous studies suggest several specific risk estimators of PU learning such as non-negative PU (nnPU), which are unbiased and consist…

Cited by 0SourceScholar
2025

Boosting Short Text Classification with Multi-Source Information Exploration and Dual-Level Contrastive Learning

AAAI 2025technical

Short text classification, as a research subtopic in natural language processing, is more challenging due to its semantic sparsity and insufficient labeled samples in practical scenarios. We propose a novel model named MI-DELIGHT for short text classification in this work. Specifically, it first per…

2025

Graph Few-Shot Learning via Adaptive Spectrum Experts and Cross-Set Distribution Calibration

NeurIPS 2025poster

Graph few-shot learning has attracted increasing attention due to its ability to rapidly adapt models to new tasks with only limited labeled nodes. Despite the remarkable progress made by existing graph few-shot learning methods, several key limitations remain. First, most current approaches rely on…

Cited by 0SourceScholar
2025

Robust Misinformation Detection by Visiting Potential Commonsense Conflict

IJCAI 2025

The development of Internet technology has led to an increased prevalence of misinformation, causing severe negative effects across diverse domains. To mitigate this challenge, Misinformation Detection (MD), aiming to detect online misinformation automatically, emerges as a rapidly growing research

2024

Improved Graph Contrastive Learning for Short Text Classification

AAAI 2024technical

Text classification occupies an important role in natural language processing and has many applications in real life. Short text classification, as one of its subtopics, has attracted increasing interest from researchers since it is more challenging due to its semantic sparsity and insufficient labe…

2024

Instance-adaptive Zero-shot Chain-of-Thought Prompting

NeurIPS 2024poster

Zero-shot Chain-of-Thought (CoT) prompting emerges as a simple and effective strategy for enhancing the performance of large language models (LLMs) in real-world reasoning tasks. Nonetheless, the efficacy of a singular, task-level prompt uniformly applied across the whole of instances is inherently…

Cited by 5SourcePDFScholar
2024

Resolving Word Vagueness with Scenario-guided Adapter for Natural Language Inference

IJCAI 2024poster

Natural Language Inference (NLI) is a crucial task in natural language processing that involves determining the relationship between two sentences, typically referred to as the premise and the hypothesis. However, traditional NLI models solely rely on the semantic information inherent in independent…

Cited by 7SourcePDFScholar
2024

WPML3CP: Wasserstein Partial Multi-Label Learning with Dual Label Correlation Perspectives

IJCAI 2024poster

Partial multi-label learning (PMLL) refers to a weakly-supervised classification problem, where each instance is associated with a set of candidate labels, covering its ground-truth labels but also with irrelevant ones. The current methodology of PMLL is to estimate the ground-truth confidences of c…

2023

Local and Global: Temporal Question Answering via Information Fusion

IJCAI 2023poster

Many models that leverage knowledge graphs (KGs) have recently demonstrated remarkable success in question answering (QA) tasks. In the real world, many facts contained in KGs are time-constrained thus temporal KGQA has received increasing attention. Despite the fruitful efforts of previous models i…

Cited by 18SourcePDFScholar
2023

Variational Wasserstein Barycenters with C-cyclical Monotonicity Regularization

AAAI 2023technical

Wasserstein barycenter, built on the theory of Optimal Transport (OT), provides a powerful framework to aggregate probability distributions, and it has increasingly attracted great attention within the machine learning community. However, it is often intractable to precisely compute, especially for…

2021

Deep Attention Diffusion Graph Neural Networks for Text Classification

EMNLP 2021main

Text classification is a fundamental task with broad applications in natural language processing. Recently, graph neural networks (GNNs) have attracted much attention due to their powerful representation ability. However, most existing methods for text classification based on GNNs consider only one-…

Cited by 77SourcePDFScholar