Search Results for author: Jicong Fan

Found 27 papers, 6 papers with code

Spectral Clustering for Discrete Distributions

no code implementations25 Jan 2024 Zixiao Wang, Dong Qiao, Jicong Fan

Discrete distribution clustering (D2C) was often solved by Wasserstein barycenter methods.

Clustering Computational Efficiency

Boosting Spectral Clustering on Incomplete Data via Kernel Correction and Affinity Learning

1 code implementation 37th Conference on Neural Information Processing Systems (NeurIPS 2023) 2023 Fangchen Yu, Runze Zhao, Zhan Shi, Yiwen Lu, Jicong Fan, Yicheng Zeng, Jianfeng Mao, Wenye Li

Secondly, we develop a series of affinity learning methods that equip the selfexpressive framework with ℓp-norm to construct an intrinsic affinity matrix with an adaptive extension.

Clustering Imputation

Self-Discriminative Modeling for Anomalous Graph Detection

no code implementations10 Oct 2023 Jinyu Cai, Yunhe Zhang, Jicong Fan

Under the framework, we provide three algorithms with different computational efficiencies and stabilities for anomalous graph detection.

Anomaly Detection

ESMC: Entire Space Multi-Task Model for Post-Click Conversion Rate via Parameter Constraint

no code implementations18 Jul 2023 Zhenhao Jiang, Biao Zeng, Hao Feng, Jin Liu, Jicong Fan, Jie Zhang, Jia Jia, Ning Hu, Xingyu Chen, Xuguang Lan

We propose a novel Entire Space Multi-Task Model for Post-Click Conversion Rate via Parameter Constraint (ESMC) and two alternatives: Entire Space Multi-Task Model with Siamese Network (ESMS) and Entire Space Multi-Task Model in Global Domain (ESMG) to address the PSC issue.

Decision Making Recommendation Systems +1

Restricted Generative Projection for One-Class Classification and Anomaly Detection

no code implementations9 Jul 2023 Feng Xiao, Ruoyu Sun, Jicong Fan

The core idea is to learn a mapping to transform the unknown distribution of training (normal) data to a known target distribution.

Informativeness One-Class Classification

Deep Graph-Level Orthogonal Hypersphere Compression for Anomaly Detection

no code implementations13 Feb 2023 Yunhe Zhang, Yan Sun, Jinyu Cai, Jicong Fan

Graph-level anomaly detection aims to identify anomalous graphs from a collection of graphs in an unsupervised manner.

Anomaly Detection

Deep Graph-Level Clustering Using Pseudo-Label-Guided Mutual Information Maximization Network

no code implementations5 Feb 2023 Jinyu Cai, Yi Han, Wenzhong Guo, Jicong Fan

In this work, we study the problem of partitioning a set of graphs into different groups such that the graphs in the same group are similar while the graphs in different groups are dissimilar.

Clustering Graph Classification +3

Decoupled Cross-Scale Cross-View Interaction for Stereo Image Enhancement in The Dark

no code implementations2 Nov 2022 Huan Zheng, Zhao Zhang, Jicong Fan, Richang Hong, Yi Yang, Shuicheng Yan

Specifically, we present a decoupled interaction module (DIM) that aims for sufficient dual-view information interaction.

Image Enhancement

Laplacian-based Cluster-Contractive t-SNE for High Dimensional Data Visualization

no code implementations25 Jul 2022 Yan Sun, Yi Han, Jicong Fan

Dimensionality reduction techniques aim at representing high-dimensional data in low-dimensional spaces to extract hidden and useful information or facilitate visual understanding and interpretation of the data.

Data Visualization Dimensionality Reduction +1

Unsupervised Deep Discriminant Analysis Based Clustering

no code implementations9 Jun 2022 Jinyu Cai, Wenzhong Guo, Jicong Fan

This work presents an unsupervised deep discriminant analysis for clustering.

Clustering

Perturbation Learning Based Anomaly Detection

no code implementations6 Jun 2022 Jinyu Cai, Jicong Fan

This paper presents a simple yet effective method for anomaly detection.

Anomaly Detection

Towards Feature Distribution Alignment and Diversity Enhancement for Data-Free Quantization

no code implementations30 Apr 2022 Yangcheng Gao, Zhao Zhang, Richang Hong, Haijun Zhang, Jicong Fan, Shuicheng Yan

To obtain high inter-class separability of semantic features, we cluster and align the feature distribution statistics to imitate the distribution of real data, so that the performance degradation is alleviated.

Data Free Quantization Model Compression +1

Efficient Deep Embedded Subspace Clustering

1 code implementation CVPR 2022 Jinyu Cai, Jicong Fan, Wenzhong Guo, Shiping Wang, Yunhe Zhang, Zhao Zhang

The proposed method is out of the self-expressive framework, scales to the sample size linearly, and is applicable to arbitrarily large datasets and online clustering scenarios.

Clustering Deep Clustering +1

Neuron-Enhanced Autoencoder based Collaborative filtering: Theory and Practice

no code implementations29 Sep 2021 Jicong Fan, Rui Chen, Chris Ding

We provide theoretical analysis for NE-AECF to investigate the generalization ability of autoencoder and deep learning in collaborative filtering.

Collaborative Filtering

Multi-Mode Deep Matrix and Tensor Factorization

no code implementations ICLR 2022 Jicong Fan

This paper presents a framework of multi-mode deep matrix and tensor factorizations to explore and exploit the full nonlinearity of the data in matrices and tensors.

Tensor Decomposition

A Simple Approach to Automated Spectral Clustering

1 code implementation23 Jul 2021 Jicong Fan, Yiheng Tu, Zhao Zhang, Mingbo Zhao, Haijun Zhang

First, we propose to find the most reliable affinity matrix via grid search or Bayesian optimization among a set of candidates given by different AMC methods with different hyperparameters, where the reliability is quantified by the \textit{relative-eigen-gap} of graph Laplacian introduced in this paper.

Bayesian Optimization Clustering +1

Large-Scale Subspace Clustering via k-Factorization

1 code implementation8 Dec 2020 Jicong Fan

This paper presents a method called k-Factorization Subspace Clustering (k-FSC) for large-scale subspace clustering.

Clustering

Euclidean-Norm-Induced Schatten-p Quasi-Norm Regularization for Low-Rank Tensor Completion and Tensor Robust Principal Component Analysis

no code implementations7 Dec 2020 Jicong Fan, Lijun Ding, Chengrun Yang, Zhao Zhang, Madeleine Udell

The theorems show that a relatively sharper regularizer leads to a tighter error bound, which is consistent with our numerical results.

$k$FW: A Frank-Wolfe style algorithm with stronger subproblem oracles

no code implementations29 Jun 2020 Lijun Ding, Jicong Fan, Madeleine Udell

This paper proposes a new variant of Frank-Wolfe (FW), called $k$FW.

Efficient AutoML Pipeline Search with Matrix and Tensor Factorization

1 code implementation7 Jun 2020 Chengrun Yang, Jicong Fan, Ziyang Wu, Madeleine Udell

Data scientists seeking a good supervised learning model on a new dataset have many choices to make: they must preprocess the data, select features, possibly reduce the dimension, select an estimation algorithm, and choose hyperparameters for each of these pipeline components.

AutoML

Robust Non-Linear Matrix Factorization for Dictionary Learning, Denoising, and Clustering

no code implementations4 May 2020 Jicong Fan, Chengrun Yang, Madeleine Udell

RNLMF constructs a dictionary for the data space by factoring a kernelized feature space; a noisy matrix can then be decomposed as the sum of a sparse noise matrix and a clean data matrix that lies in a low dimensional nonlinear manifold.

Clustering Denoising +2

Online high rank matrix completion

no code implementations CVPR 2019 Jicong Fan, Madeleine Udell

Recent advances in matrix completion enable data imputation in full-rank matrices by exploiting low dimensional (nonlinear) latent structure.

Imputation Matrix Completion +1

Polynomial Matrix Completion for Missing Data Imputation and Transductive Learning

no code implementations15 Dec 2019 Jicong Fan, Yuqian Zhang, Madeleine Udell

This paper develops new methods to recover the missing entries of a high-rank or even full-rank matrix when the intrinsic dimension of the data is low compared to the ambient dimension.

Clustering Imputation +2

Factor Group-Sparse Regularization for Efficient Low-Rank Matrix Recovery

no code implementations NeurIPS 2019 Jicong Fan, Lijun Ding, Yudong Chen, Madeleine Udell

Compared to the max norm and the factored formulation of the nuclear norm, factor group-sparse regularizers are more efficient, accurate, and robust to the initial guess of rank.

Low-Rank Matrix Completion

Exactly Robust Kernel Principal Component Analysis

no code implementations28 Feb 2018 Jicong Fan, Tommy W. S. Chow

RKPCA can be applied to many problems such as noise removal and subspace clustering and is still the only unsupervised nonlinear method robust to sparse noises.

Clustering

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