no code implementations • 27 Nov 2021 • Luca Pion-Tonachini, Kristofer Bouchard, Hector Garcia Martin, Sean Peisert, W. Bradley Holtz, Anil Aswani, Dipankar Dwivedi, Haruko Wainwright, Ghanshyam Pilania, Benjamin Nachman, Babetta L. Marrone, Nicola Falco, Prabhat, Daniel Arnold, Alejandro Wolf-Yadlin, Sarah Powers, Sharlee Climer, Quinn Jackson, Ty Carlson, Michael Sohn, Petrus Zwart, Neeraj Kumar, Amy Justice, Claire Tomlin, Daniel Jacobson, Gos Micklem, Georgios V. Gkoutos, Peter J. Bickel, Jean-Baptiste Cazier, Juliane Müller, Bobbie-Jo Webb-Robertson, Rick Stevens, Mark Anderson, Ken Kreutz-Delgado, Michael W. Mahoney, James B. Brown
We outline emerging opportunities and challenges to enhance the utility of AI for scientific discovery.
no code implementations • 17 Sep 2019 • Omid S. Solari, James B. Brown, Peter J. Bickel
We also introduceDirected Sparse CCA, which is able to find associations which are aligned with a specified experiment design, andMulti-View sCCA which is used to discover associations between multiple sets of covariates.
no code implementations • 2 Oct 2018 • Tianxi Li, Lihua Lei, Sharmodeep Bhattacharyya, Koen Van den Berge, Purnamrita Sarkar, Peter J. Bickel, Elizaveta Levina
This can be done with a simple top-down recursive partitioning algorithm, starting with a single community and separating the nodes into two communities by spectral clustering repeatedly, until a stopping rule suggests there are no further communities.
no code implementations • 18 Aug 2017 • Soumendu Sundar Mukherjee, Purnamrita Sarkar, Peter J. Bickel
In this article, we advance divide-and-conquer strategies for solving the community detection problem in networks.
2 code implementations • 30 Jul 2017 • Y. X. Rachel Wang, Purnamrita Sarkar, Oana Ursu, Anshul Kundaje, Peter J. Bickel
However, one of the drawbacks of community detection is that most methods take exchangeability of the nodes in the network for granted; whereas the nodes in this case, i. e. the positions on the chromosomes, are not exchangeable.
Applications Genomics
6 code implementations • 12 Jun 2017 • Sören R. Künzel, Jasjeet S. Sekhon, Peter J. Bickel, Bin Yu
There is growing interest in estimating and analyzing heterogeneous treatment effects in experimental and observational studies.
Statistics Theory Methodology Statistics Theory
no code implementations • NeurIPS 2015 • Purnamrita Sarkar, Deepayan Chakrabarti, Peter J. Bickel
Link prediction and clustering are key problems for network-structureddata.
no code implementations • 7 Aug 2015 • Sharmodeep Bhattacharyya, Peter J. Bickel
We focus on spectral clustering of unlabeled graphs and review some results on clustering methods which achieve weak or strong consistent identification in data generated by such models.
no code implementations • 16 Jan 2014 • Sharmodeep Bhattacharyya, Peter J. Bickel
There are some exceptions but all have some incomplete theoretical basis.
no code implementations • 12 Nov 2013 • Peter J. Bickel, Purnamrita Sarkar
Community detection in networks is a key exploratory tool with applications in a diverse set of areas, ranging from finding communities in social and biological networks to identifying link farms in the World Wide Web.
no code implementations • 5 Oct 2013 • Purnamrita Sarkar, Peter J. Bickel
The quality of spectral clustering is closely tied to the convergence properties of these principal eigenvectors.
no code implementations • 10 Jul 2012 • Arash A. Amini, Aiyou Chen, Peter J. Bickel, Elizaveta Levina
Many algorithms have been proposed for fitting network models with communities, but most of them do not scale well to large networks, and often fail on sparse networks.
no code implementations • 23 Feb 2012 • Peter J. Bickel, Aiyou Chen, Elizaveta Levina
Probability models on graphs are becoming increasingly important in many applications, but statistical tools for fitting such models are not yet well developed.
Statistics Theory Statistics Theory