Search Results for author: Subhadeep Paul

Found 10 papers, 4 papers with code

A Mutually Exciting Latent Space Hawkes Process Model for Continuous-time Networks

1 code implementation19 May 2022 Zhipeng Huang, Hadeel Soliman, Subhadeep Paul, Kevin S. Xu

Networks and temporal point processes serve as fundamental building blocks for modeling complex dynamic relational data in various domains.

Point Processes

Identifying Peer Influence in Therapeutic Communities

1 code implementation27 Mar 2022 Shanjukta Nath, Keith Warren, Subhadeep Paul

We investigate if there is a peer influence or role model effect on successful graduation from Therapeutic Communities (TCs).

counterfactual

Joint Analysis of Social and Item Response Networks with Latent Space Models

no code implementations26 Oct 2019 Selena Shuo Wang, Subhadeep Paul, Jessica Logan, Paul De Boeck

Using LSMH, we summarize the information from the social network and the item responses in a person-item joint latent space.

Applications Methodology

CHIP: A Hawkes Process Model for Continuous-time Networks with Scalable and Consistent Estimation

1 code implementation NeurIPS 2020 Makan Arastuie, Subhadeep Paul, Kevin S. Xu

In many application settings involving networks, such as messages between users of an on-line social network or transactions between traders in financial markets, the observed data consist of timestamped relational events, which form a continuous-time network.

Clustering Community Detection

Higher-Order Spectral Clustering under Superimposed Stochastic Block Model

no code implementations16 Dec 2018 Subhadeep Paul, Olgica Milenkovic, Yuguo Chen

In particular, we prove non-asymptotic upper bounds on the misclustering error of spectral community detection for a SupSBM setting in which triangles or 3-uniform hyperedges are superimposed with undirected edges.

Clustering Community Detection +1

Spectral and matrix factorization methods for consistent community detection in multi-layer networks

no code implementations24 Apr 2017 Subhadeep Paul, Yuguo Chen

We consider the problem of estimating a consensus community structure by combining information from multiple layers of a multi-layer network using methods based on the spectral clustering or a low-rank matrix factorization.

Clustering Community Detection

Null Models and Community Detection in Multi-Layer Networks

no code implementations1 Aug 2016 Subhadeep Paul, Yuguo Chen

Multi-layer networks are networks on a set of entities (nodes) with multiple types of relations (edges) among them where each type of relation/interaction is represented as a network layer.

Community Detection Methodology Social and Information Networks Physics and Society

Orthogonal symmetric non-negative matrix factorization under the stochastic block model

no code implementations17 May 2016 Subhadeep Paul, Yuguo Chen

We present a method based on the orthogonal symmetric non-negative matrix tri-factorization of the normalized Laplacian matrix for community detection in complex networks.

Clustering Community Detection +1

Community detection in multi-relational data with restricted multi-layer stochastic blockmodel

no code implementations8 Jun 2015 Subhadeep Paul, Yuguo Chen

We derive consistency results for community assignments of the maximum likelihood estimators (MLEs) in both models where MLSBM is assumed to be the true model, and either the number of nodes or the number of types of edges or both grow.

Community Detection Stochastic Block Model

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