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Chenyang Xu

17 accepted papers

2026

CRAG: Can 3D Generative Models Help 3D Assembly?

ICML 2026poster

Most existing 3D assembly methods treat the problem as pure pose estimation, rearranging observed parts via rigid transformations. In contrast, human assembly naturally couples structural reasoning with holistic shape inference. Inspired by this intuition, we reformulate 3D assembly as a joint probl…

Cited by 0SourceScholar
2026

EigenCache: Rethinking Diffusion Acceleration as Covariance-Optimal Forecasting and Submodular Information Allocation

ICML 2026poster

Accelerating diffusion models via feature caching has evolved from static reuse to polynomial extrapolation, yet current "cache-then-forecast" strategies remain limited by rigid, hand-crafted approximation families (e.g., Taylor or Hermite bases) that often misalign with the complex, layer-specific …

Cited by 0SourceScholar
2026

Richer Representations for Neural Algorithmic Reasoning via Auxiliary Reconstruction

AAAI 2026technical

Neural algorithmic reasoning has recently emerged as a popular research direction. It aims to train neural networks to mimic the step-by-step behavior of classical rule-based algorithms. More specifically, the execution of such algorithms can be abstracted as a sequence of states, where each state

Cited by 0SourcePDFScholar
2025

A Beyond-Worst-Case Analysis of Greedy k-means++

NeurIPS 2025poster

$k$-means++ and the related greedy $k$-means++ algorithm are celebrated algorithms that efficiently compute seeds for Lloyd's algorithm. Greedy $k$-means++ is a generalization of $k$-means++ where, in each iteration, a new seed is greedily chosen among multiple $\ell \geq 2$ points sampled, as oppos…

Cited by 0SourceScholar
2025

GARF: Learning Generalizable 3D Reassembly for Real-World Fractures

ICCV 2025poster

3D reassembly is a challenging spatial intelligence task with broad applications across scientific domains. While large-scale synthetic datasets have fueled promising learning-based approaches, their generalizability to different domains is limited. Critically, it remains uncertain whether models tr…

Cited by 0SourcePDFScholar
2025

LLM-TPF: Multiscale Temporal Periodicity-Semantic Fusion LLMs for Time Series Forecasting

IJCAI 2025

Large language models have demonstrated remarkable generalization capabilities and strong performance across various fields. Recent research has highlighted their significant potential in time series forecasting. However, time series data often exhibit complex periodic characteristics, posing a subs

2024

A Context-Enhanced Framework for Sequential Graph Reasoning

IJCAI 2024poster

The paper studies sequential reasoning over graph-structured data, which stands as a fundamental task in various trending fields like automated math problem solving and neural graph algorithm learning, attracting a lot of research interest. Simultaneously managing both sequential and graph-structure…

2024

Sampling for Beyond-Worst-Case Online Ranking

AAAI 2024technical

The feedback arc set problem is one of the most fundamental and well-studied ranking problems where n objects are to be ordered based on their pairwise comparison. The problem enjoys several efficient approximation algorithms in the offline setting. Unfortunately, online there are strong lower boun…

Cited by 0SourcePDFScholar
2023

Min-Max Submodular Ranking for Multiple Agents

AAAI 2023technical

In the submodular ranking (SR) problem, the input consists of a set of submodular functions defined on a ground set of elements. The goal is to order elements for all the functions to have value above a certain threshold as soon on average as possible, assuming we choose one element per time. The pr…

2023

Multiagent MST Cover: Pleasing All Optimally via a Simple Voting Rule

AAAI 2023technical

Given a connected graph on whose edges we can build roads to connect the nodes, a number of agents hold possibly different perspectives on which edges should be selected by assigning different edge weights. Our task is to build a minimum number of roads so that every agent has a spanning tree in the…

Cited by 0SourcePDFScholar
2022

Single-Stage Is Enough: Multi-Person Absolute 3D Pose Estimation

CVPR 2022poster

The existing multi-person absolute 3D pose estimation methods are mainly based on two-stage paradigm, i.e., top-down or bottom-up, leading to redundant pipelines with high computation cost. We argue that it is more desirable to simplify such two-stage paradigm to a single-stage one to promote both e…

Cited by 56PDFScholar