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Haojun Chen

7 accepted papers

2026

DexKnot: Generalizable Visuomotor Policy Learning for Dexterous Bag-Knotting Manipulation

ICRA 2026poster

Knotting plastic bags is a common task in daily life, yet it is challenging for robots due to the bags' infinite degrees of freedom and complex physical dynamics. Existing methods often struggle in generalization to unseen bag instances or deformations. To address this, we present DexKnot, a framewo…

2026

Fault Tolerant Multi-Agent Learning with Adversarial Budget Constraints

ICML 2026poster

We study robustness to agent malfunctions in cooperative multi-agent reinforcement learning (MARL), a failure mode that is critical in practice yet underexplored in existing theory. We introduce MARTA, a plug-and-play robustness layer that augments standard MARL algorithms with a {\fontfamily{cmss}\…

Cited by 0SourceScholar
2025

Falcon: Fast Visuomotor Policies via Partial Denoising

ICML 2025poster

Diffusion policies are widely adopted in complex visuomotor tasks for their ability to capture multimodal action distributions. However, the multiple sampling steps required for action generation significantly harm real-time inference efficiency, which limits their applicability in real-time decisio…

Cited by 0SourcePDFScholar
2025

Temporal Query Network for Efficient Multivariate Time Series Forecasting

ICML 2025poster

Sufficiently modeling the correlations among variables (aka channels) is crucial for achieving accurate multivariate time series forecasting (MTSF). In this paper, we propose a novel technique called Temporal Query (TQ) to more effectively capture multivariate correlations, thereby improving model p…

2024

Panacea: Pareto Alignment via Preference Adaptation for LLMs

NeurIPS 2024poster

Current methods for large language model alignment typically use scalar human preference labels. However, this convention tends to oversimplify the multi-dimensional and heterogeneous nature of human preferences, leading to reduced expressivity and even misalignment. This paper presents Panacea, an…

Cited by 32SourcePDFScholar
2024

SparseTSF: Modeling Long-term Time Series Forecasting with *1k* Parameters

ICML 2024oral

This paper introduces SparseTSF, a novel, extremely lightweight model for Long-term Time Series Forecasting (LTSF), designed to address the challenges of modeling complex temporal dependencies over extended horizons with minimal computational resources. At the heart of SparseTSF lies the Cross-Perio…

2023

MANSA: Learning Fast and Slow in Multi-Agent Systems

ICML 2023poster

In multi-agent reinforcement learning (MARL), independent learning (IL) often shows remarkable performance and easily scales with the number of agents. Yet, using IL can be inefficient and runs the risk of failing to successfully train, particularly in scenarios that require agents to coordinate the…

Cited by 7SourcePDFScholar