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Changjun Fan

5 accepted papers

2026

CoCo-MILP: Inter-Variable Contrastive and Intra-Constraint Competitive MILP Solution Prediction

AAAI 2026technical

Mixed-Integer Linear Programming (MILP) is a cornerstone of combinatorial optimization, yet solving large-scale instances remains a significant computational challenge. Recently, Graph Neural Networks (GNNs) have shown promise in accelerating MILP solvers by predicting high-quality solutions. Howev

Cited by 0SourcePDFScholar
2026

From Compression to Construction: Pseudo Neighbor Augmentation Sampling for Dynamic Link Prediction

IJCAI 2026

Dynamic link prediction aims to predict whether two nodes will interact at a future time point in a dynamic graph based on their historical interactions. Existing sampling based methods, which can be considered as a compressor, generally select a subset of one-hop neighbors from the entire interacti

Cited by 0Scholar
2025

RoME: Domain-Robust Mixture-of-Experts for MILP Solution Prediction across Domains

NeurIPS 2025poster

Mixed-Integer Linear Programming (MILP) is a fundamental and powerful framework for modeling complex optimization problems across diverse domains. Recently, learning-based methods have shown great promise in accelerating MILP solvers by predicting high-quality solutions. However, most existing appro…

Cited by 0SourceScholar
2024

Score-CDM: Score-Weighted Convolutional Diffusion Model for Multivariate Time Series Imputation

IJCAI 2024poster

Multivariant time series (MTS) data are usually incomplete in real scenarios, and imputing the incomplete MTS is practically important to facilitate various time series mining tasks. Recently, diffusion model-based MTS imputation methods have achieved promising results by utilizing CNN or attention…

2021

Learning from History: Modeling Temporal Knowledge Graphs with Sequential Copy-Generation Networks

AAAI 2021technical

Large knowledge graphs often grow to store temporal facts that model the dynamic relations or interactions of entities along the timeline. Since such temporal knowledge graphs often suffer from incompleteness, it is important to develop time-aware representation learning models that help to infer th…