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Wenzheng Zhang

8 accepted papers

2026

A Hybrid Optimization Framework for Grasp Synthesis under Partial Observations

ICRA 2026poster

We propose a hybrid grasp synthesis framework that combines a learning-based Energy Based Model (EBM) with an analytical Iterative Closest Point (ICP) methodto generate robustgrasps from partially observed point clouds. The learned energy function acts as a prior within a Stein Variational Gradient …

2026

Deformable Cluster Manipulation Via Whole-Arm Policy Learning

ICRA 2026poster

Manipulating clusters of deformable objects presents a substantial challenge with widespread applicability, but requires contact-rich whole-arm interactions. A potential solution must address the limited capacity for realistic model synthesis, high uncertainty in perception, and the lack of efficien…

2025

ImpRAG: Retrieval-Augmented Generation with Implicit Queries

EMNLP 2025

Retrieval-Augmented Generation (RAG) systems traditionally treat retrieval and generation as separate processes, requiring explicit textual queries to connect them. This separation can limit the ability of models to generalize across diverse tasks. In this work, we propose a query-free RAG system, n

Cited by 0SourcePDFScholar
2025

Poplar: Efficient Scaling of Distributed DNN Training on Heterogeneous GPU Clusters

AAAI 2025technical

Scaling Deep Neural Networks (DNNs) requires significant computational resources in terms of GPU quantity and compute capacity. In practice, there usually exists a large number of heterogeneous GPU devices due to the rapid release cycle of GPU products. It is highly needed to efficiently and economi…

Cited by 0SourcePDFScholar
2022

Multi-Scale Distillation from Multiple Graph Neural Networks

AAAI 2022technical

Knowledge Distillation (KD), which is an effective model compression and acceleration technique, has been successfully applied to graph neural networks (GNNs) recently. Existing approaches utilize a single GNN model as the teacher to distill knowledge. However, we notice that GNN models with differe…