Search Results for author: Haoran Liu

Found 17 papers, 10 papers with code

Random-coupled Neural Network

no code implementations26 Mar 2024 Haoran Liu, Mingzhe Liu, Peng Li, Jiahui Wu, Xin Jiang, Zhuo Zuo, Bingqi Liu

This process randomly closes some neural connections in the RCNN model, realized by the random inactivation weight matrix of link input.

Image Segmentation Semantic Segmentation

Everything Perturbed All at Once: Enabling Differentiable Graph Attacks

no code implementations29 Aug 2023 Haoran Liu, Bokun Wang, Jianling Wang, Xiangjue Dong, Tianbao Yang, James Caverlee

As powerful tools for representation learning on graphs, graph neural networks (GNNs) have played an important role in applications including social networks, recommendation systems, and online web services.

Meta-Learning Recommendation Systems +1

Pulse shape discrimination based on the Tempotron: a powerful classifier on GPU

1 code implementation26 May 2023 Haoran Liu, Peng Li, Ming-Zhe Liu, Kai-Ming Wang, Zhuo Zuo, Bing-Qi Liu

This study introduces the Tempotron, a powerful classifier based on a third-generation neural network model, for pulse shape discrimination.

Dataset for neutron and gamma-ray pulse shape discrimination

no code implementations24 May 2023 Kaimin Wang, Haoran Liu, Peng Li, Mingzhe Liu, Zhuo Zuo

In addition to the pulse signals, this dataset includes the source code for all the aforementioned pulse shape discrimination methods.

Delving into Discrete Normalizing Flows on SO(3) Manifold for Probabilistic Rotation Modeling

1 code implementation CVPR 2023 Yulin Liu, Haoran Liu, Yingda Yin, Yang Wang, Baoquan Chen, He Wang

Normalizing flows (NFs) provide a powerful tool to construct an expressive distribution by a sequence of trackable transformations of a base distribution and form a probabilistic model of underlying data.

UniDexGrasp: Universal Robotic Dexterous Grasping via Learning Diverse Proposal Generation and Goal-Conditioned Policy

1 code implementation CVPR 2023 Yinzhen Xu, Weikang Wan, Jialiang Zhang, Haoran Liu, Zikang Shan, Hao Shen, Ruicheng Wang, Haoran Geng, Yijia Weng, Jiayi Chen, Tengyu Liu, Li Yi, He Wang

Trained on our synthesized large-scale dexterous grasp dataset, this model enables us to sample diverse and high-quality dexterous grasp poses for the object point cloud. For the second stage, we propose to replace the motion planning used in parallel gripper grasping with a goal-conditioned grasp policy, due to the complexity involved in dexterous grasping execution.

Motion Planning

Gradient-Guided Importance Sampling for Learning Binary Energy-Based Models

1 code implementation11 Oct 2022 Meng Liu, Haoran Liu, Shuiwang Ji

the discrete data space to approximately construct the provably optimal proposal distribution, which is subsequently used by importance sampling to efficiently estimate the original ratio matching objective.

Graph Generation

Learning Hierarchical Protein Representations via Complete 3D Graph Networks

1 code implementation26 Jul 2022 Limei Wang, Haoran Liu, Yi Liu, Jerry Kurtin, Shuiwang Ji

In this work, we propose to develop a novel hierarchical graph network, known as ProNet, to capture the relations.

Representation Learning

ComENet: Towards Complete and Efficient Message Passing for 3D Molecular Graphs

1 code implementation17 Jun 2022 Limei Wang, Yi Liu, Yuchao Lin, Haoran Liu, Shuiwang Ji

To incorporate 3D information completely and efficiently, we propose a novel message passing scheme that operates within 1-hop neighborhood.

Drug Discovery

Exploring the Common Principal Subspace of Deep Features in Neural Networks

no code implementations6 Oct 2021 Haoran Liu, Haoyi Xiong, Yaqing Wang, Haozhe An, Dongrui Wu, Dejing Dou

Specifically, we design a new metric $\mathcal{P}$-vector to represent the principal subspace of deep features learned in a DNN, and propose to measure angles between the principal subspaces using $\mathcal{P}$-vectors.

Image Reconstruction Self-Supervised Learning

Gradient-Guided Importance Sampling for Learning Discrete Energy-Based Models

1 code implementation29 Sep 2021 Meng Liu, Haoran Liu, Shuiwang Ji

In this study, we propose ratio matching with gradient-guided importance sampling (RMwGGIS) to alleviate the above limitations.

Graph Generation

DIG: A Turnkey Library for Diving into Graph Deep Learning Research

1 code implementation23 Mar 2021 Meng Liu, Youzhi Luo, Limei Wang, Yaochen Xie, Hao Yuan, Shurui Gui, Haiyang Yu, Zhao Xu, Jingtun Zhang, Yi Liu, Keqiang Yan, Haoran Liu, Cong Fu, Bora Oztekin, Xuan Zhang, Shuiwang Ji

Although there exist several libraries for deep learning on graphs, they are aiming at implementing basic operations for graph deep learning.

Benchmarking Graph Generation +1

Empirical Studies on the Convergence of Feature Spaces in Deep Learning

no code implementations1 Jan 2021 Haoran Liu, Haoyi Xiong, Yaqing Wang, Haozhe An, Dongrui Wu, Dejing Dou

While deep learning is effective to learn features/representations from data, the distributions of samples in feature spaces learned by various architectures for different training tasks (e. g., latent layers of AEs and feature vectors in CNN classifiers) have not been well-studied or compared.

Image Reconstruction Self-Supervised Learning

Neural Diffusion Model for Microscopic Cascade Prediction

1 code implementation21 Dec 2018 Cheng Yang, Maosong Sun, Haoran Liu, Shiyi Han, Zhiyuan Liu, Huanbo Luan

The strong assumptions oversimplify the complex diffusion mechanism and prevent these models from better fitting real-world cascade data.

Social and Information Networks Physics and Society

A Blended Deep Learning Approach for Predicting User Intended Actions

no code implementations11 Oct 2018 Fei Tan, Zhi Wei, Jun He, Xiang Wu, Bo Peng, Haoran Liu, Zhenyu Yan

In this work, we focus on pre- dicting attrition, which is one of typical user intended actions.

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