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Shanshan Feng

13 accepted papers

2026

Communication-efficient Multi-Agent Reinforcement Learning with Spatiotemporal Information Hub

AAAI 2026technical

Centralized training with decentralized execution (CTDE) is a framework for MARL with wide applications. In the CTDE paradigm, agents leverage global state information during training to mitigate the non-stationarity of the MARL environment, but must rely solely on partial observations during execut

Cited by 0SourcePDFScholar
2026

DeepSTE: Deep Spectral Temporal Embeddings for Dynamic Graph Representation Learning

IJCAI 2026

Temporal embeddings play a crucial role in dynamic graph neural networks (DGNNs) by capturing the temporal dynamics of interactions. However, existing Random Fourier Feature (RFF)-based methods in DGNNs directly sample Fourier frequencies from a fixed, data-independent distribution $p(\omega)$, negl

Cited by 0Scholar
2026

Invariant Graph Representations for Continuous-Time Dynamic Graphs Under Distribution Shifts

IJCAI 2026

Continuous-Time Dynamic Graphs (CTDGs) enable fine-grained modeling of evolving relational systems. However, most existing CTDG representation learning methods are tailored to in-distribution settings and exhibit limited robustness under out-of-distribution (OOD) shifts. Although recent causal appro

Cited by 0Scholar
2025

A Mixed-Curvature based Pre-training Paradigm for Multi-Task Vehicle Routing Solver

ICML 2025poster

Solving various types of vehicle routing problems (VRPs) using a unified neural solver has garnered significant attentions in recent years. Despite their effectiveness, existing neural multi-task solvers often fail to account for the geometric structures inherent in different tasks, which may result…

Cited by 0SourcePDFScholar
2025

AsyncDSB: Schedule-Asynchronous Diffusion Schrödinger Bridge for Image Inpainting

AAAI 2025technical

Image inpainting is an important image generation task, which aims to restore corrupted image from partial visible area. Recently, diffusion Schrödinger bridge methods effectively tackle this task by modeling the translation between corrupted and target images as a diffusion Schrödinger bridge proce…

Cited by 0SourcePDFScholar
2025

Multi-Hierarchical Fine-Grained Feature Mapping Driven by Feature Contributions for Molecular Odor Prediction

IJCAI 2025

Molecular odor prediction involves using a molecule's structure to estimate its odor. While accurate prediction remains challenging, AI models can suggest potential odors. Existing methods, however, often rely on basic descriptors or handcrafted fingerprints, which lack expressive power and hinder e

Cited by 0SourcePDFScholar
2024

KGTS: Contrastive Trajectory Similarity Learning over Prompt Knowledge Graph Embedding

AAAI 2024technical

Trajectory similarity computation serves as a fundamental functionality of various spatial information applications. Although existing deep learning similarity computation methods offer better efficiency and accuracy than non-learning solutions, they are still immature in trajectory embedding and su…

Cited by 26SourcePDFScholar
2024

LLMs Can Find Mathematical Reasoning Mistakes by Pedagogical Chain-of-Thought

IJCAI 2024poster

Self-correction is emerging as a promising approach to mitigate the issue of hallucination in Large Language Models (LLMs). To facilitate effective self-correction, recent research has proposed mistake detection as its initial step. However, current literature suggests that LLMs often struggle with…

2023

PCR: Proxy-Based Contrastive Replay for Online Class-Incremental Continual Learning

CVPR 2023poster

Online class-incremental continual learning is a specific task of continual learning. It aims to continuously learn new classes from data stream and the samples of data stream are seen only once, which suffers from the catastrophic forgetting issue, i.e., forgetting historical knowledge of old class…

2022

Gated Mechanism Enhanced Multi-Task Learning for Dialog Routing

COLING 2022main

Currently, human-bot symbiosis dialog systems, e.g. pre- and after-sales in E-commerce, are ubiquitous, and the dialog routing component is essential to improve the overall efficiency, reduce human resource cost and increase user experience. To satisfy this requirement, existing methods are mostly h…

Cited by 0SourcePDFScholar
2022

Hyperbolic Knowledge Transfer with Class Hierarchy for Few-Shot Learning

IJCAI 2022poster

Few-shot learning (FSL) aims to recognize a novel class with very few instances, which is a challenging task since it suffers from a data scarcity issue. One way to effectively alleviate this issue is introducing explicit knowledge summarized from human past experiences to achieve knowledge transfer…

Cited by 18SourcePDFScholar
2022

MetaNODE: Prototype Optimization as a Neural ODE for Few-Shot Learning

AAAI 2022technical

Few-Shot Learning (FSL) is a challenging task, i.e., how to recognize novel classes with few examples? Pre-training based methods effectively tackle the problem by pre-training a feature extractor and then predicting novel classes via a cosine nearest neighbor classifier with mean-based prototypes.…

2021

Parallel Subtrajectory Alignment over Massive-Scale Trajectory Data

IJCAI 2021poster

We study the problem of subtrajectory alignment over massive-scale trajectory data. Given a collection of trajectories, a subtrajectory alignment query returns new targeted trajectories by splitting and aligning existing trajectories. The resulting functionality targets a range of applications, incl…

Cited by 20SourcePDFScholar