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Heng Zhao

10 accepted papers

2026

SIMoE: A Probabilistic Framework for Cardinality-Constrained Routing in Mixture-of-Experts

ICML 2026poster

Mixture-of-Experts (MoE) models scale by activating only a small subset of experts per token, but standard deterministic top-$k$ routing is non-differentiable and trained using surrogate gradients that ignore the discrete expert selection used at inference. We introduce SIMoE routing by modeling exp…

Cited by 0SourceScholar
2025

Beyond Single Concept Vector: Modeling Concept Subspace in LLMs with Gaussian Distribution

ICLR 2025poster

Probing learned concepts in large language models (LLMs) is crucial for understanding how semantic knowledge is encoded internally. Training linear classifiers on probing tasks is a principle approach to denote the vector of a certain concept in the representation space. However, the single vector i…

2025

MIRE: Matched Implicit Neural Representations

CVPR 2025poster

Implicit Neural Representations (INRs) are continuous function learners for conventional digital signal representations. With the aid of positional embeddings and/or exhaustively fine-tuned activation functions, INRs have surpassed many limitations of traditional discrete representations. However, e…

Cited by 0SourcePDFScholar
2025

Multi-Sector Overlap Loss: A Universal Framework for One-Shot 6DoF Global Localization Across Heterogeneous LiDARs

RA-L 2025

This paper presents a universal LiDAR point cloud global localization framework based on multi-sector overlapping loss to address the localization challenges caused by heterogeneous LiDAR point clouds with varying resolutions, scanning formats, and field of view differences. The proposed method firs

Cited by 0SourceScholar
2025

One-shot Global Localization through Semantic Distribution Feature Retrieval and Semantic Topological Histogram Registration

IROS 2025

One-shot global localization is crucial in many robotic applications, providing significant advantages during initialization and relocalization processes. However, LiDAR-based one-shot global localization methods encounter challenges, including local feature matching errors, sensitivity to dynamic o

Cited by 0SourcecodeScholar
2025

PIN: Prolate Spheroidal Wave Function-based Implicit Neural Representations

ICLR 2025poster

Implicit Neural Representations (INRs) provide a continuous mapping between the coordinates of a signal and the corresponding values. As the performance of INRs heavily depends on the choice of nonlinear-activation functions, there has been a significant focus on encoding explicit signals within INR…

Cited by 0SourcePDFScholar
2025

SGTD: A Semantic-Guided Triangle Descriptor for One-Shot LiDAR-Based Global Localization

RA-L 2025

This paper presents a novel one-shot global localization algorithm based on semantic-guided triangle descriptors to address initialization and global localization challenges in GNSSdenied environments. By encoding semantic geometric information into triangle descriptors, the proposed approach achiev

Cited by 1SourcecodeScholar
2024

Video-Text Prompting for Weakly Supervised Spatio-Temporal Video Grounding

EMNLP 2024main

Weakly-supervised Spatio-Temporal Video Grounding(STVG) aims to localize target object tube given a text query, without densely annotated training data. Existing methods extract each candidate tube feature independently by cropping objects from video frame feature, discarding all contextual informat…

Cited by 0SourcePDFScholar
2023

Learning Symmetry-Aware Geometry Correspondences for 6D Object Pose Estimation

ICCV 2023poster

Current 6D pose estimation methods focus on handling objects that are previously trained, which limits their applications in real dynamic world. To this end, we propose a geometry correspondence-based framework, termed GCPose, to estimate 6D pose of arbitrary unseen objects without any re-training.…

Cited by 20PDFcodeScholar