Search Results for author: Shuiwang Ji

Found 102 papers, 60 papers with code

Active Test-Time Adaptation: Theoretical Analyses and An Algorithm

2 code implementations7 Apr 2024 Shurui Gui, Xiner Li, Shuiwang Ji

Extensive experimental results confirm consistency with our theoretical analyses and show that the proposed ATTA method yields substantial performance improvements over TTA methods while maintaining efficiency and shares similar effectiveness to the more demanding active domain adaptation (ADA) methods.

Active Learning Learning Theory +1

SineNet: Learning Temporal Dynamics in Time-Dependent Partial Differential Equations

1 code implementation28 Mar 2024 Xuan Zhang, Jacob Helwig, Yuchao Lin, Yaochen Xie, Cong Fu, Stephan Wojtowytsch, Shuiwang Ji

While the U-Net architecture with skip connections is commonly used by prior studies to enable multi-scale processing, our analysis shows that the need for features to evolve across layers results in temporally misaligned features in skip connections, which limits the model's performance.

Complete and Efficient Graph Transformers for Crystal Material Property Prediction

1 code implementation18 Mar 2024 Keqiang Yan, Cong Fu, Xiaofeng Qian, Xiaoning Qian, Shuiwang Ji

Crystal structures are characterized by atomic bases within a primitive unit cell that repeats along a regular lattice throughout 3D space.

Graph Representation Learning Property Prediction

On the Markov Property of Neural Algorithmic Reasoning: Analyses and Methods

no code implementations7 Mar 2024 Montgomery Bohde, Meng Liu, Alexandra Saxton, Shuiwang Ji

To address challenges in training ForgetNet at early stages, we further introduce G-ForgetNet, which uses a gating mechanism to allow for the selective integration of historical embeddings.

QH9: A Quantum Hamiltonian Prediction Benchmark for QM9 Molecules

1 code implementation NeurIPS 2023 Haiyang Yu, Meng Liu, Youzhi Luo, Alex Strasser, Xiaofeng Qian, Xiaoning Qian, Shuiwang Ji

Supervised machine learning approaches have been increasingly used in accelerating electronic structure prediction as surrogates of first-principle computational methods, such as density functional theory (DFT).

Atomic Forces

Graph Structure and Feature Extrapolation for Out-of-Distribution Generalization

no code implementations13 Jun 2023 Xiner Li, Shurui Gui, Youzhi Luo, Shuiwang Ji

Out-of-distribution (OOD) generalization deals with the prevalent learning scenario where test distribution shifts from training distribution.

Data Augmentation Out-of-Distribution Generalization

Efficient Approximations of Complete Interatomic Potentials for Crystal Property Prediction

1 code implementation12 Jun 2023 Yuchao Lin, Keqiang Yan, Youzhi Luo, Yi Liu, Xiaoning Qian, Shuiwang Ji

This is enabled by our approximations of infinite potential summations, where we extend the Ewald summation for several potential series approximations with provable error bounds.

Band Gap Formation Energy +2

Graph Mixup with Soft Alignments

1 code implementation11 Jun 2023 Hongyi Ling, Zhimeng Jiang, Meng Liu, Shuiwang Ji, Na Zou

We conduct systematic experiments to show that S-Mixup can improve the performance and generalization of graph neural networks (GNNs) on various graph classification tasks.

Data Augmentation Graph Classification

Group Equivariant Fourier Neural Operators for Partial Differential Equations

1 code implementation9 Jun 2023 Jacob Helwig, Xuan Zhang, Cong Fu, Jerry Kurtin, Stephan Wojtowytsch, Shuiwang Ji

We consider solving partial differential equations (PDEs) with Fourier neural operators (FNOs), which operate in the frequency domain.

Efficient and Equivariant Graph Networks for Predicting Quantum Hamiltonian

1 code implementation8 Jun 2023 Haiyang Yu, Zhao Xu, Xiaofeng Qian, Xiaoning Qian, Shuiwang Ji

We consider the prediction of the Hamiltonian matrix, which finds use in quantum chemistry and condensed matter physics.

Joint Learning of Label and Environment Causal Independence for Graph Out-of-Distribution Generalization

2 code implementations NeurIPS 2023 Shurui Gui, Meng Liu, Xiner Li, Youzhi Luo, Shuiwang Ji

In this work, we propose to simultaneously incorporate label and environment causal independence (LECI) to fully make use of label and environment information, thereby addressing the challenges faced by prior methods on identifying causal and invariant subgraphs.

Out-of-Distribution Generalization

A Score-Based Model for Learning Neural Wavefunctions

no code implementations25 May 2023 Xuan Zhang, Shenglong Xu, Shuiwang Ji

Existing optimization approaches compute the energy by sampling local energy from an explicit probability distribution given by the wavefunction.

Provably Convergent Subgraph-wise Sampling for Fast GNN Training

no code implementations17 Mar 2023 Jie Wang, Zhihao Shi, Xize Liang, Shuiwang Ji, Bin Li, Feng Wu

During the message passing (MP) in GNNs, subgraph-wise sampling methods discard messages outside the mini-batches in backward passes to avoid the well-known neighbor explosion problem, i. e., the exponentially increasing dependencies of nodes with the number of MP iterations.

Generalization in Visual Reinforcement Learning with the Reward Sequence Distribution

1 code implementation19 Feb 2023 Jie Wang, Rui Yang, Zijie Geng, Zhihao Shi, Mingxuan Ye, Qi Zhou, Shuiwang Ji, Bin Li, Yongdong Zhang, Feng Wu

The appealing features of RSD-OA include that: (1) RSD-OA is invariant to visual distractions, as it is conditioned on the predefined subsequent action sequence without task-irrelevant information from transition dynamics, and (2) the reward sequence captures long-term task-relevant information in both rewards and transition dynamics.

reinforcement-learning Reinforcement Learning (RL) +1

DiffBP: Generative Diffusion of 3D Molecules for Target Protein Binding

no code implementations21 Nov 2022 Haitao Lin, Yufei Huang, Meng Liu, Xuanjing Li, Shuiwang Ji, Stan Z. Li

Previous works usually generate atoms in an auto-regressive way, where element types and 3D coordinates of atoms are generated one by one.

Drug Discovery

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

Periodic Graph Transformers for Crystal Material Property Prediction

2 code implementations23 Sep 2022 Keqiang Yan, Yi Liu, Yuchao Lin, Shuiwang Ji

Our Matformer is designed to be invariant to periodicity and can capture repeating patterns explicitly.

Band Gap Formation Energy +2

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

FlowX: Towards Explainable Graph Neural Networks via Message Flows

2 code implementations26 Jun 2022 Shurui Gui, Hao Yuan, Jie Wang, Qicheng Lao, Kang Li, Shuiwang Ji

We investigate the explainability of graph neural networks (GNNs) as a step toward elucidating their working mechanisms.

Philosophy

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

Self-Adaptive Label Augmentation for Semi-supervised Few-shot Classification

no code implementations16 Jun 2022 Xueliang Wang, Jianyu Cai, Shuiwang Ji, Houqiang Li, Feng Wu, Jie Wang

A major novelty of SALA is the task-adaptive metric, which can learn the metric adaptively for different tasks in an end-to-end fashion.

Classification

GOOD: A Graph Out-of-Distribution Benchmark

1 code implementation16 Jun 2022 Shurui Gui, Xiner Li, Limei Wang, Shuiwang Ji

Our GOOD benchmark is a growing project and expects to expand in both quantity and variety of resources as the area develops.

Lattice Convolutional Networks for Learning Ground States of Quantum Many-Body Systems

no code implementations15 Jun 2022 Cong Fu, Xuan Zhang, Huixin Zhang, Hongyi Ling, Shenglong Xu, Shuiwang Ji

Based on the proposed lattice convolutions, we design lattice convolutional networks (LCN) that use self-gating and attention mechanisms.

GraphFM: Improving Large-Scale GNN Training via Feature Momentum

1 code implementation14 Jun 2022 Haiyang Yu, Limei Wang, Bokun Wang, Meng Liu, Tianbao Yang, Shuiwang Ji

GraphFM-IB applies FM to in-batch sampled data, while GraphFM-OB applies FM to out-of-batch data that are 1-hop neighborhood of in-batch data.

Node Classification

Empowering GNNs via Edge-Aware Weisfeiler-Leman Algorithm

no code implementations4 Jun 2022 Meng Liu, Haiyang Yu, Shuiwang Ji

Message passing graph neural networks (GNNs) are known to have their expressiveness upper-bounded by 1-dimensional Weisfeiler-Leman (1-WL) algorithm.

Learning Task-relevant Representations for Generalization via Characteristic Functions of Reward Sequence Distributions

1 code implementation20 May 2022 Rui Yang, Jie Wang, Zijie Geng, Mingxuan Ye, Shuiwang Ji, Bin Li, Feng Wu

Generalization across different environments with the same tasks is critical for successful applications of visual reinforcement learning (RL) in real scenarios.

Reinforcement Learning (RL)

Generating 3D Molecules for Target Protein Binding

1 code implementation19 Apr 2022 Meng Liu, Youzhi Luo, Kanji Uchino, Koji Maruhashi, Shuiwang Ji

Second, to preserve the desirable equivariance property, we select a local reference atom according to the designed auxiliary classifiers and then construct a local spherical coordinate system.

Drug Discovery

Duality-Induced Regularizer for Semantic Matching Knowledge Graph Embeddings

no code implementations24 Mar 2022 Jie Wang, Zhanqiu Zhang, Zhihao Shi, Jianyu Cai, Shuiwang Ji, Feng Wu

Semantic matching models -- which assume that entities with similar semantics have similar embeddings -- have shown great power in knowledge graph embeddings (KGE).

Entity Embeddings Knowledge Graph Embeddings +1

Automated Data Augmentations for Graph Classification

no code implementations26 Feb 2022 Youzhi Luo, Michael McThrow, Wing Yee Au, Tao Komikado, Kanji Uchino, Koji Maruhashi, Shuiwang Ji

In this work, we propose GraphAug, a novel automated data augmentation method aiming at computing label-invariant augmentations for graph classification.

Data Augmentation Graph Classification

Self-Supervised Representation Learning via Latent Graph Prediction

no code implementations16 Feb 2022 Yaochen Xie, Zhao Xu, Shuiwang Ji

Self-supervised learning (SSL) of graph neural networks is emerging as a promising way of leveraging unlabeled data.

Contrastive Learning Representation Learning +1

Task-Agnostic Graph Explanations

1 code implementation16 Feb 2022 Yaochen Xie, Sumeet Katariya, Xianfeng Tang, Edward Huang, Nikhil Rao, Karthik Subbian, Shuiwang Ji

They are also unable to provide explanations in cases where the GNN is trained in a self-supervised manner, and the resulting representations are used in future downstream tasks.

Neighbor2Seq: Deep Learning on Massive Graphs by Transforming Neighbors to Sequences

1 code implementation7 Feb 2022 Meng Liu, Shuiwang Ji

Therefore, our Neighbor2Seq naturally endows GNNs with the efficiency and advantages of deep learning operations on grid-like data by precomputing the Neighbor2Seq transformations.

ConE: Cone Embeddings for Multi-Hop Reasoning over Knowledge Graphs

1 code implementation NeurIPS 2021 Zhanqiu Zhang, Jie Wang, Jiajun Chen, Shuiwang Ji, Feng Wu

To address this challenge, we propose a novel query embedding model, namely Cone Embeddings (ConE), which is the first geometry-based QE model that can handle all the FOL operations, including conjunction, disjunction, and negation.

Knowledge Graphs Negation

GraphEBM: Towards Permutation Invariant and Multi-Objective Molecular Graph Generation

no code implementations29 Sep 2021 Meng Liu, Keqiang Yan, Bora Oztekin, Shuiwang Ji

In this work, we propose GraphEBM, a molecular graph generation method via energy-based models (EBMs), as an exploratory work to perform permutation invariant and multi-objective molecule generation.

Drug Discovery Graph Generation +1

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

Task-Agnostic Graph Neural Explanations

no code implementations29 Sep 2021 Yaochen Xie, Sumeet Katariya, Xianfeng Tang, Edward W Huang, Nikhil Rao, Karthik Subbian, Shuiwang Ji

TAGE enables the explanation of GNN embedding models without downstream tasks and allows efficient explanation of multitask models.

Group Contrastive Self-Supervised Learning on Graphs

no code implementations20 Jul 2021 Xinyi Xu, Cheng Deng, Yaochen Xie, Shuiwang Ji

Our framework embeds the given graph into multiple subspaces, of which each representation is prompted to encode specific characteristics of graphs.

Contrastive Learning Self-Supervised Learning

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

Self-Supervised Learning of Graph Neural Networks: A Unified Review

no code implementations22 Feb 2021 Yaochen Xie, Zhao Xu, Jingtun Zhang, Zhengyang Wang, Shuiwang Ji

Our unified treatment of SSL methods for GNNs sheds light on the similarities and differences of various methods, setting the stage for developing new methods and algorithms.

Self-Supervised Learning

Spherical Message Passing for 3D Graph Networks

1 code implementation ICLR 2022 Yi Liu, Limei Wang, Meng Liu, Xuan Zhang, Bora Oztekin, Shuiwang Ji

Based on such observations, we propose the spherical message passing (SMP) as a novel and powerful scheme for 3D molecular learning.

Drug Discovery Representation Learning

On Explainability of Graph Neural Networks via Subgraph Explorations

1 code implementation9 Feb 2021 Hao Yuan, Haiyang Yu, Jie Wang, Kang Li, Shuiwang Ji

To make the tree search more effective, we propose to use Shapley values as a measure of subgraph importance, which can also capture the interactions among different subgraphs.

GraphEBM: Molecular Graph Generation with Energy-Based Models

1 code implementation ICLR Workshop EBM 2021 Meng Liu, Keqiang Yan, Bora Oztekin, Shuiwang Ji

We note that most existing approaches for molecular graph generation fail to guarantee the intrinsic property of permutation invariance, resulting in unexpected bias in generative models.

Graph Generation Molecular Graph Generation

A Multi-Stage Attentive Transfer Learning Framework for Improving COVID-19 Diagnosis

no code implementations14 Jan 2021 Yi Liu, Shuiwang Ji

The method is then integrated to the last stage of the proposed transfer learning framework to reuse the complex patterns learned from the same CT images.

Computed Tomography (CT) COVID-19 Diagnosis +3

CleftNet: Augmented Deep Learning for Synaptic Cleft Detection from Brain Electron Microscopy

no code implementations12 Jan 2021 Yi Liu, Shuiwang Ji

The effectiveness of our methods is evaluated on both online and offline tasks.

Node2Seq: Towards Trainable Convolutions in Graph Neural Networks

no code implementations6 Jan 2021 Hao Yuan, Shuiwang Ji

Several graph neural network approaches are proposed for node feature learning and they generally follow a neighboring information aggregation scheme to learn node features.

Weighted Line Graph Convolutional Networks

no code implementations1 Jan 2021 Hongyang Gao, Shuiwang Ji

Line graphs have shown to be effective in improving feature learning in graph neural networks.

Teleport Graph Convolutional Networks

no code implementations1 Jan 2021 Hongyang Gao, Shuiwang Ji

To address these limitations, we propose a teleport graph convolution layer (TeleGCL) that uses teleport functions to enable each node to aggregate information from a much larger neighborhood.

Node Classification

Explainability in Graph Neural Networks: A Taxonomic Survey

no code implementations31 Dec 2020 Hao Yuan, Haiyang Yu, Shurui Gui, Shuiwang Ji

To facilitate evaluations, we generate a set of benchmark graph datasets specifically for GNN explainability.

Advanced Graph and Sequence Neural Networks for Molecular Property Prediction and Drug Discovery

1 code implementation2 Dec 2020 Zhengyang Wang, Meng Liu, Youzhi Luo, Zhao Xu, Yaochen Xie, Limei Wang, Lei Cai, Qi Qi, Zhuoning Yuan, Tianbao Yang, Shuiwang Ji

Here we develop a suite of comprehensive machine learning methods and tools spanning different computational models, molecular representations, and loss functions for molecular property prediction and drug discovery.

BIG-bench Machine Learning Drug Discovery +2

Augmented Equivariant Attention Networks for Microscopy Image Reconstruction

no code implementations6 Nov 2020 Yaochen Xie, Yu Ding, Shuiwang Ji

Advances in deep learning enable us to perform image-to-image transformation tasks for various types of microscopy image reconstruction, computationally producing high-quality images from the physically acquired low-quality ones.

Image Classification Image Reconstruction +1

Noise2Same: Optimizing A Self-Supervised Bound for Image Denoising

1 code implementation NeurIPS 2020 Yaochen Xie, Zhengyang Wang, Shuiwang Ji

Self-supervised frameworks that learn denoising models with merely individual noisy images have shown strong capability and promising performance in various image denoising tasks.

Image Denoising

Line Graph Neural Networks for Link Prediction

2 code implementations20 Oct 2020 Lei Cai, Jundong Li, Jie Wang, Shuiwang Ji

In this formalism, a link prediction problem is converted to a graph classification task.

General Classification Graph Classification +2

Topology-Aware Graph Pooling Networks

no code implementations19 Oct 2020 Hongyang Gao, Yi Liu, Shuiwang Ji

In addition, graph topology is incorporated in global voting to compute the importance score of each node globally in the entire graph.

Graph Classification

CorDEL: A Contrastive Deep Learning Approach for Entity Linkage

no code implementations15 Sep 2020 Zhengyang Wang, Bunyamin Sisman, Hao Wei, Xin Luna Dong, Shuiwang Ji

We evaluate CorDEL with extensive experiments conducted on both public benchmark datasets and a real-world dataset.

Entity Resolution

Global Voxel Transformer Networks for Augmented Microscopy

1 code implementation5 Aug 2020 Zhengyang Wang, Yaochen Xie, Shuiwang Ji

In this work, we introduce global voxel transformer networks (GVTNets), an advanced deep learning tool for augmented microscopy that overcomes intrinsic limitations of the current U-Net based models and achieves improved performance.

Second-Order Pooling for Graph Neural Networks

1 code implementation20 Jul 2020 Zhengyang Wang, Shuiwang Ji

In addition, compared to existing graph pooling methods, second-order pooling is able to use information from all nodes and collect second-order statistics, making it more powerful.

Graph Classification Graph Representation Learning +2

Towards Deeper Graph Neural Networks

3 code implementations18 Jul 2020 Meng Liu, Hongyang Gao, Shuiwang Ji

Based on our theoretical and empirical analysis, we propose Deep Adaptive Graph Neural Network (DAGNN) to adaptively incorporate information from large receptive fields.

Attribute Graph Representation Learning +2

Deep Learning of High-Order Interactions for Protein Interface Prediction

no code implementations18 Jul 2020 Yi Liu, Hao Yuan, Lei Cai, Shuiwang Ji

However, these methods do not incorporate the important sequential information from amino acid chains and the high-order pairwise interactions.

Protein Interface Prediction Vocal Bursts Intensity Prediction

Kronecker Attention Networks

1 code implementation ICLR 2020 Hongyang Gao, Zhengyang Wang, Shuiwang Ji

Use of attention operators on high-order data requires flattening of the spatial or spatial-temporal dimensions into a vector, which is assumed to follow a multivariate normal distribution.

XGNN: Towards Model-Level Explanations of Graph Neural Networks

no code implementations3 Jun 2020 Hao Yuan, Jiliang Tang, Xia Hu, Shuiwang Ji

Furthermore, our experimental results indicate that the generated graphs can provide guidance on how to improve the trained GNNs.

Graph Generation valid

Non-Local Graph Neural Networks

1 code implementation29 May 2020 Meng Liu, Zhengyang Wang, Shuiwang Ji

Modern graph neural networks (GNNs) learn node embeddings through multilayer local aggregation and achieve great success in applications on assortative graphs.

Node Classification on Non-Homophilic (Heterophilic) Graphs

iCapsNets: Towards Interpretable Capsule Networks for Text Classification

no code implementations16 May 2020 Zhengyang Wang, Xia Hu, Shuiwang Ji

On the other hand, iCapsNets explore a novel way to explain the model's general behavior, achieving global interpretability.

General Classification text-classification +1

Adversarial Attacks and Defenses on Graphs: A Review, A Tool and Empirical Studies

3 code implementations2 Mar 2020 Wei Jin, Ya-Xin Li, Han Xu, Yiqi Wang, Shuiwang Ji, Charu Aggarwal, Jiliang Tang

As the extensions of DNNs to graphs, Graph Neural Networks (GNNs) have been demonstrated to inherit this vulnerability.

Adversarial Attack

Topology-Aware Pooling via Graph Attention

no code implementations25 Sep 2019 Hongyang Gao, Shuiwang Ji

Previous studies used global ranking methods to sample some of the important nodes, but most of them are not able to incorporate graph topology information in computing ranking scores.

Graph Attention Graph Classification

XFake: Explainable Fake News Detector with Visualizations

no code implementations8 Jul 2019 Fan Yang, Shiva K. Pentyala, Sina Mohseni, Mengnan Du, Hao Yuan, Rhema Linder, Eric D. Ragan, Shuiwang Ji, Xia Hu

In this demo paper, we present the XFake system, an explainable fake news detector that assists end-users to identify news credibility.

Attribute

Graph Representation Learning via Hard and Channel-Wise Attention Networks

1 code implementation5 Jul 2019 Hongyang Gao, Shuiwang Ji

To further reduce the requirements on computational resources, we propose the cGAO that performs attention operations along channels.

Ranked #8 on Graph Classification on D&D (using extra training data)

Graph Attention Graph Classification +4

Global Pixel Transformers for Virtual Staining of Microscopy Images

no code implementations1 Jul 2019 Yi Liu, Hao Yuan, Zhengyang Wang, Shuiwang Ji

It is also shown that our proposed global pixel transformer layer is useful to improve the fluorescence image prediction results.

Graph U-Nets

3 code implementations11 May 2019 Hongyang Gao, Shuiwang Ji

We further propose the gUnpool layer as the inverse operation of the gPool layer.

General Classification Graph Classification +3

On Attribution of Recurrent Neural Network Predictions via Additive Decomposition

no code implementations27 Mar 2019 Mengnan Du, Ninghao Liu, Fan Yang, Shuiwang Ji, Xia Hu

REAT decomposes the final prediction of a RNN into additive contribution of each word in the input text.

Decision Making

Learning Graph Pooling and Hybrid Convolutional Operations for Text Representations

1 code implementation21 Jan 2019 Hongyang Gao, Yongjun Chen, Shuiwang Ji

Another limitation of GCN when used on graph-based text representation tasks is that, GCNs do not consider the order information of nodes in graph.

Text Categorization

Non-local U-Net for Biomedical Image Segmentation

3 code implementations10 Dec 2018 Zhengyang Wang, Na Zou, Dinggang Shen, Shuiwang Ji

In this work, we propose the non-local U-Nets, which are equipped with flexible global aggregation blocks, for biomedical image segmentation.

Brain Image Segmentation Image Segmentation +2

Graph U-Net

no code implementations27 Sep 2018 Hongyang Gao, Shuiwang Ji

We further propose the gUnpool layer as the inverse operation of the gPool layer.

Graph Embedding Node Classification +1

ChannelNets: Compact and Efficient Convolutional Neural Networks via Channel-Wise Convolutions

2 code implementations NeurIPS 2018 Hongyang Gao, Zhengyang Wang, Shuiwang Ji

Compared to prior CNNs designed for mobile devices, ChannelNets achieve a significant reduction in terms of the number of parameters and computational cost without loss in accuracy.

General Classification

Smoothed Dilated Convolutions for Improved Dense Prediction

1 code implementation27 Aug 2018 Zhengyang Wang, Shuiwang Ji

Unlike existing models, which explore solutions by focusing on a block of cascaded dilated convolutional layers, our methods address the gridding artifacts by smoothing the dilated convolution itself.

Audio Generation Machine Translation +2

Large-Scale Learnable Graph Convolutional Networks

1 code implementation12 Aug 2018 Hongyang Gao, Zhengyang Wang, Shuiwang Ji

However, the number of neighboring units is neither fixed nor are they ordered in generic graphs, thereby hindering the applications of convolutional operations.

Document Classification Node Classification

Efficient and Invariant Convolutional Neural Networks for Dense Prediction

no code implementations24 Nov 2017 Hongyang Gao, Shuiwang Ji

In this paper, we propose a set of methods based on kernel rotation and flip to enable rotation and flip invariance in convolutional neural networks.

Image Segmentation Semantic Segmentation

Dense Transformer Networks

1 code implementation24 May 2017 Jun Li, Yongjun Chen, Lei Cai, Ian Davidson, Shuiwang Ji

The proposed dense transformer modules are differentiable, thus the entire network can be trained.

Image Segmentation Semantic Segmentation

Multi-Stage Variational Auto-Encoders for Coarse-to-Fine Image Generation

1 code implementation19 May 2017 Lei Cai, Hongyang Gao, Shuiwang Ji

In the simplest case, the proposed multi-stage VAE divides the decoder into two components in which the second component generates refined images based on the course images generated by the first component.

Image Generation

Pixel Deconvolutional Networks

4 code implementations ICLR 2018 Hongyang Gao, Hao Yuan, Zhengyang Wang, Shuiwang Ji

When used in image generation tasks, our PixelDCL can largely overcome the checkerboard problem suffered by regular deconvolution operations.

Image Generation Segmentation +1

Spatial Variational Auto-Encoding via Matrix-Variate Normal Distributions

1 code implementation18 May 2017 Zhengyang Wang, Hao Yuan, Shuiwang Ji

In this work, we propose spatial VAEs that use feature maps of larger size as latent variables to explicitly capture spatial information.

Learning Convolutional Text Representations for Visual Question Answering

1 code implementation18 May 2017 Zhengyang Wang, Shuiwang Ji

We also show that the text representation requirement in visual question answering is more complicated and comprehensive than that in conventional natural language processing tasks, making it a better task to evaluate textual representation methods.

General Classification text-classification +1

Multi-label Multiple Kernel Learning

no code implementations NeurIPS 2008 Shuiwang Ji, Liang Sun, Rong Jin, Jieping Ye

We present a multi-label multiple kernel learning (MKL) formulation, in which the data are embedded into a low-dimensional space directed by the instance-label correlations encoded into a hypergraph.

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