Search Results for author: Can Chen

Found 23 papers, 6 papers with code

On Complexity of Stability Analysis in Higher-order Ecological Networks through Tensor Decompositions

no code implementations4 Jan 2024 Anqi Dong, Can Chen

Complex ecological networks are often characterized by intricate interactions that extend beyond pairwise relationships.

Dual-space Hierarchical Learning for Goal-guided Conversational Recommendation

1 code implementation30 Dec 2023 Can Chen, Hao liu, Zeming Liu, Xue Liu, Dejing Dou

In this paper, we propose Dual-space Hierarchical Learning (DHL) to leverage multi-level goal sequences and their hierarchical relationships for conversational recommendation.

Recommendation Systems Representation Learning

Graph Convolutional Network-based Feature Selection for High-dimensional and Low-sample Size Data

1 code implementation25 Nov 2022 Can Chen, Scott T. Weiss, Yang-Yu Liu

Feature selection is a powerful dimension reduction technique which selects a subset of relevant features for model construction.

Dimensionality Reduction feature selection

Hypergraph Analysis Toolbox for Chromosome Conformation

no code implementations21 Nov 2022 Joshua Pickard, Can Chen, Rahmy Salman, Cooper Stansbury, Sion Kim, Amit Surana, Anthony Bloch, Indika Rajapakse

Recent advances in biological technologies, such as multi-way chromosome conformation capture (3C), require development of methods for analysis of multi-way interactions.

Gradient-based Bi-level Optimization for Deep Learning: A Survey

no code implementations24 Jul 2022 Can Chen, Xi Chen, Chen Ma, Zixuan Liu, Xue Liu

In this survey, we first give a formal definition of the gradient-based bi-level optimization.

Hyperparameter Optimization

A Survey on Hyperlink Prediction

no code implementations6 Jul 2022 Can Chen, Yang-Yu Liu

As a natural extension of link prediction on graphs, hyperlink prediction aims for the inference of missing hyperlinks in hypergraphs, where a hyperlink can connect more than two nodes.

Link Prediction

Unbiased Implicit Feedback via Bi-level Optimization

no code implementations31 May 2022 Can Chen, Chen Ma, Xi Chen, Sirui Song, Hao liu, Xue Liu

Recent works reveal a huge gap between the implicit feedback and user-item relevance due to the fact that implicit feedback is also closely related to the item exposure.

Recommendation Systems

Structure-aware Protein Self-supervised Learning

1 code implementation6 Apr 2022 Can Chen, Jingbo Zhou, Fan Wang, Xue Liu, Dejing Dou

Furthermore, we propose to leverage the available protein language model pretrained on protein sequences to enhance the self-supervised learning.

Protein Language Model Representation Learning +1

Generalized DataWeighting via Class-Level Gradient Manipulation

1 code implementation NeurIPS 2021 Can Chen, Shuhao Zheng, Xi Chen, Erqun Dong, Xue (Steve) Liu, Hao liu, Dejing Dou

To be specific, GDW unrolls the loss gradient to class-level gradients by the chain rule and reweights the flow of each gradient separately.

Generalized Data Weighting via Class-level Gradient Manipulation

1 code implementation29 Oct 2021 Can Chen, Shuhao Zheng, Xi Chen, Erqun Dong, Xue Liu, Hao liu, Dejing Dou

To be specific, GDW unrolls the loss gradient to class-level gradients by the chain rule and reweights the flow of each gradient separately.

Iterative Prediction-and-Optimization for E-Logistics Distribution Network Design

no code implementations INFORMS Journal 2021 Junming Liu, Weiwei Chen, Jingyuan Yang, Hui Xiong, Can Chen

Summary of Contribution: We propose an iterative prediction-and-optimization algorithm for multilevel distribution network design for e-logistics and evaluate its operational value for online retailers.

Hypergraph Dissimilarity Measures

no code implementations15 Jun 2021 Amit Surana, Can Chen, Indika Rajapakse

In this paper, we propose two novel approaches for hypergraph comparison.

RoIFusion: 3D Object Detection from LiDAR and Vision

no code implementations9 Sep 2020 Can Chen, Luca Zanotti Fragonara, Antonios Tsourdos

When localizing and detecting 3D objects for autonomous driving scenes, obtaining information from multiple sensor (e. g. camera, LIDAR) typically increases the robustness of 3D detectors.

3D Object Detection Autonomous Driving +2

Controllability of Hypergraphs

no code implementations25 May 2020 Can Chen, Amit Surana, Anthony Bloch, Indika Rajapakse

In this paper, we develop a notion of controllability for hypergraphs via tensor algebra and polynomial control theory.

Tensor Entropy for Uniform Hypergraphs

no code implementations20 Dec 2019 Can Chen, Indika Rajapakse

In this paper, we develop the notion of entropy for uniform hypergraphs via tensor theory.

Go Wider: An Efficient Neural Network for Point Cloud Analysis via Group Convolutions

no code implementations23 Sep 2019 Can Chen, Luca Zanotti Fragonara, Antonios Tsourdos

Unlike conventional operation that directly applies MLPs on high-dimensional features of point cloud, our model goes wider by splitting features into groups in advance, and each group with certain smaller depth is only responsible for respective MLP operation, which can reduce complexity and allows to encode more useful information.

Autonomous Driving Efficient Neural Network +1

Fast Hierarchical Neural Network for Feature Learning on Point Cloud

no code implementations10 Jun 2019 Can Chen, Luca Zanotti Fragonara, Antonios Tsourdos

In order to balance model performance and complexity, we introduce a novel neural network architecture exploiting local features from a manually subsampled point set.

GAPNet: Graph Attention based Point Neural Network for Exploiting Local Feature of Point Cloud

3 code implementations21 May 2019 Can Chen, Luca Zanotti Fragonara, Antonios Tsourdos

In this paper, we propose a novel neural network for point cloud, dubbed GAPNet, to learn local geometric representations by embedding graph attention mechanism within stacked Multi-Layer-Perceptron (MLP) layers.

Graph Attention

Focus Manipulation Detection via Photometric Histogram Analysis

no code implementations CVPR 2018 Can Chen, Scott McCloskey, Jingyi Yu

With the rise of misinformation spread via social media channels, enabled by the increasing automation and realism of image manipulation tools, image forensics is an increasingly relevant problem.

Image Forensics Image Manipulation +1

Depth Recovery From Light Field Using Focal Stack Symmetry

no code implementations ICCV 2015 Haiting Lin, Can Chen, Sing Bing Kang, Jingyi Yu

The other is a data consistency measure based on analysis-by-synthesis, i. e., the difference between the synthesized focal stack given the hypothesized depth map and that from the LF.

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