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Chenhao Li

20 accepted papers

2026

ActiShade: Activating Overshadowed Knowledge to Guide Multi-Hop Reasoning in Large Language Models

AAAI 2026technical

In multi-hop reasoning, multi-round retrieval-augmented generation (RAG) methods typically rely on LLM-generated content as the retrieval query. However, these approaches are inherently vulnerable to knowledge overshadowing—a phenomenon where critical information is overshadowed during generation.

Cited by 0SourcePDFScholar
2025

CompKBQA: Component-wise Task Decomposition for Knowledge Base Question Answering

EMNLP 2025

Knowledge Base Question Answering (KBQA) aims to extract accurate answers from the Knowledge Base (KB). Traditional Semantic Parsing (SP)-based methods are widely used but struggle with complex queries. Recently, large language models (LLMs) have shown promise in improving KBQA performance. However,

2025

Constrained Style Learning from Imperfect Demonstrations under Task Optimality

CoRL 2025poster

Learning from demonstration has proven effective in robotics for acquiring natural behaviors, such as stylistic motions and lifelike agility, particularly when explicitly defining style-oriented reward functions is challenging. Synthesizing stylistic motions for real-world tasks usually requires bal…

Cited by 0SourceScholar
2025

Human2LocoMan: Learning Versatile Quadrupedal Manipulation with Human Pretraining

RSS 2025poster

Quadrupedal robots have demonstrated impressive locomotion capabilities in complex environments, but equipping them with autonomous versatile manipulation skills in a scalable way remains a significant challenge. In this work, we introduce a system that integrates data collection and imitation learn…

Cited by 0PDFcodeScholar
2025

Motion Priors Reimagined: Adapting Flat-Terrain Skills for Complex Quadruped Mobility

CoRL 2025poster

Reinforcement learning (RL)-based legged locomotion controllers often require meticulous reward tuning to track velocities or goal positions while preserving smooth motion on various terrains. Motion imitation methods via RL using demonstration data reduce reward engineering but fail to generalize…

Cited by 0SourceScholar
2025

NeISF++: Neural Incident Stokes Field for Polarized Inverse Rendering of Conductors and Dielectrics

CVPR 2025poster

Recent inverse rendering methods have improved shape, material, and illumination reconstruction using polarization cues. However, they only support dielectrics, ignoring conductors, which are common in everyday life. Since conductors and dielectrics have different reflection properties, using previo…

Cited by 0SourcePDFScholar
2024

Dataset and Lessons Learned from the 2024 SaTML LLM Capture-the-Flag Competition

NeurIPS 2024spotlight

Large language model systems face significant security risks from maliciously crafted messages that aim to overwrite the system's original instructions or leak private data. To study this problem, we organized a capture-the-flag competition at IEEE SaTML 2024, where the flag is a secret string in th…

2024

FLD: Fourier Latent Dynamics for Structured Motion Representation and Learning

ICLR 2024spotlight

Motion trajectories offer reliable references for physics-based motion learning but suffer from sparsity, particularly in regions that lack sufficient data coverage. To address this challenge, we introduce a self-supervised, structured representation and generation method that extracts spatial-tempo…

Cited by 11SourcePDFScholar
2024

Learning Diverse Skills for Local Navigation under Multi-constraint Optimality

ICRA 2024poster

Despite many successful applications of data-driven control in robotics, extracting meaningful diverse behaviors remains a challenge. Typically, task performance needs to be compromised in order to achieve diversity. In many scenarios, task requirements are specified as a multitude of reward terms,…

Cited by 7SourceScholar
2024

NeISF: Neural Incident Stokes Field for Geometry and Material Estimation

CVPR 2024highlight

Multi-view inverse rendering is the problem of estimating the scene parameters such as shapes materials or illuminations from a sequence of images captured under different viewpoints. Many approaches however assume single light bounce and thus fail to recover challenging scenarios like inter-reflect…

Cited by 8SourcePDFScholar
2023

Inverse Rendering of Translucent Objects Using Physical and Neural Renderers

CVPR 2023poster

In this work, we propose an inverse rendering model that estimates 3D shape, spatially-varying reflectance, homogeneous subsurface scattering parameters, and an environment illumination jointly from only a pair of captured images of a translucent object. In order to solve the ambiguity problem of in…

2023

Learning Adversarially Robust Sparse Networks via Weight Reparameterization

AAAI 2023technical

Although increasing model size can enhance the adversarial robustness of deep neural networks, in resource-constrained environments, there exist critical sparsity constraints. While the recent robust pruning technologies show promising direction to obtain adversarially robust sparse networks, they p…

2023

Versatile Skill Control via Self-supervised Adversarial Imitation of Unlabeled Mixed Motions

ICRA 2023poster

Learning diverse skills is one of the main challenges in robotics. To this end, imitation learning approaches have achieved impressive results. These methods require explicitly labeled datasets or assume consistent skill execution to enable learning and active control of individual behaviors, which…

Cited by 34SourceScholar
2022

Learning Agile Skills via Adversarial Imitation of Rough Partial Demonstrations

CoRL 2022oral

Learning agile skills is one of the main challenges in robotics. To this end, reinforcement learning approaches have achieved impressive results. These methods require explicit task information in terms of a reward function or an expert that can be queried in simulation to provide a target control o…

Cited by 73SourceScholar
2018

Sequential Inference Methods for Non-Homogeneous Poisson Processes with State-Space Prior

ICASSP 2018accepted

The Non-homogeneous Poisson process is a point process with time-varying intensity across its domain, the use of which arises in numerous areas in signal processing and machine learning. However, applications are largely limited by the intractable likelihood function and the high computational cost…

Cited by 0SourceScholar