Soumyabrata Pal
Google Research, India |
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About me
Currently, I am a Postdoctoral Researcher at Google Research, Bangalore (India) working with Dr. Prateek Jain and Dr. Karthikeyan Shanmugam . Prior to this, I completed my Ph.D in the Computer Science Department (CICS) at the University of Massachusetts Amherst advised by Dr. Arya Mazumdar. During that time, I was a Visiting Graduate Student at the University of California San Diego from May - November 2021. I had also spent the summer of 2019 as a Research Intern at Ernst & Young AI Lab at Palo Alto and Spring 2020 as an Applied Scientist Intern at Amazon Search (Berkeley). Even earlier, I graduated from Indian Institute of Technology, Kharagpur in August 2016 with a Bachelor's degree in Electronics and Electrical Communication Engineering.
Research
My research interests are Theoretical Machine Learning with a focus on Non-convex Optimization and Online Learning. More concisely, I love Statistical recovery/reconstruction problems under different reasonable structural assumptions on the data generating mechanism such as sparsity, low-rank, presence of latent clusters among others. Nowadays, I am working on designing algorithms in offline/online/hybrid systems aimed at incorporating personalization efficiently at scale. Most of my work so far can be categorized into five topics namely 1) Scalable Personalization via Low Rank and Sparse Decomposition 2) Multi-agent Online Learning via Collaborative Filtering 3) Latent Variable models - Mixtures of Linear Regression, Linear Classifiers and Distributions 4) Generative models for Graph Clustering - Geometric Block Model and 5) Active learning for Semi-supervised clustering - Disjoint Clusters, Overlapping Clusters and Fuzzy Clusters
Recent News
New papers in JMLR, ICLR 2023, AISTATS 2023.
New paper in ALT 2022!! Also started as a postdoc at Google Research!
2 new papers in NeurIPS 2021 and 1 new paper in ITCS !!
Started as a Visiting Graduate Student at UCSD from May 2021!!
PhD Dissertation
Preprints
Improved Algorithms for Stochastic Linear Bandits with Prior Observations via D-optimal Exploration
with Sushant Vijayan, Karthikeyan Shanmugam and Arun Sai Suggala
In Submission.Blocked Collaborative Bandits: Online Collaborative Filtering with Per-Item Budget Constraints
with Arun Sai Suggala, Karthikeyan Shanmugam and Prateek Jain
In Submission.Online Matrix Completion: A Collaborative Approach with Hott Items
with Dheeraj Baby
In Submission.Nash Regret Guarantees for Linear Bandits
with Siddharth Barman and Ayush Sawarni
In Submission.Private and Efficient Meta-Learning with Low Rank and Sparse Decomposition
with Prateek Varshney, Prateek Jain, Abhradeep Guha Thakurta, Gagan Madan, Gaurav Aggarwal, Pradeep Shenoy, and Gaurav Srivastava
In Submission.Improved Support Recovery in One-Bit Compressed Sensing
with Namiko Matsumoto and Arya Mazumdar
Submitted to IEEE Transactions on Information Theory (under Revision). Preliminary version appeared in Innovations in Theoretical Computer Science (ITCS), 2022.Random Subgraph Detection Using Queries
with Wasim Huleihel and Arya Mazumdar
Submitted to Journal of Machine Learning Research (JMLR).Support Recovery in Mixture Models with Sparse Parameters
with Arya Mazumdar
Submitted to Journal of Machine Learning Research (JMLR) - under Revision. Shorter version titled "On Learning Mixture Models with Sparse Parameters " accepted at AISTATS 2022
Journal Publications
Community Recovery in the Geometric Block Model
with Sainyam Galhotra, Arya Mazumdar and Barna Saha
To appear, Journal of Machine Learning Research (JMLR), 2023. Shorter versions accepted in RANDOM 2019 and AAAI 2018Trace Reconstruction: Generalized and Parameterized
with Akshay Krishnamurthy, Arya Mazumdar and Andrew McGregor
IEEE Transactions on Information Theory, 2021. Preliminary version appeared in European Symposium on Algorithms (ESA), 2019.Semisupervised Clustering by Queries and Locally Encodable Source Coding
with Arya Mazumdar
IEEE Transactions on Information Theory, 2021. Preliminary version appeared in Advances in Neural Information Processing Systems (NeurIPS), 2017.
Conference Publications
By year
Optimal Algorithms for Latent Bandits with Cluster Structure
with Arun Sai Suggala, Karthikeyan Shanmugam and Prateek Jain
International Conference on Artificial Intelligence and Statistics (AISTATS), 2023.Online Low Rank Matrix Completion
with Prateek Jain
International Conference on Learning Representations (ICLR), 2023.On Learning Mixture of Linear Regressions in the Non-Realizable Setting
with Abhishek Ghosh, Arya Mazumdar and Rajat Sen
International Conference on Machine Learning (ICML), 2022.On Learning Mixture Models with Sparse Parameters
with Arya Mazumdar
International Conference on Artificial Intelligence and Statistics (AISTATS), 2022.Lower Bounds on the Total Variation Distance Between Mixtures of Two Gaussians
with Sami Davies, Arya Mazumdar and Cyrus Rashtchian
Algorithmic Learning Theory (ALT), 2022.Support Recovery in Universal One-bit Compressed Sensing
with Arya Mazumdar
The 13th Innovations in Theoretical Computer Science (ITCS), 2022Support Recovery of Sparse Signals from a Mixture of Linear Measurements
with Venkata Gandikota and Arya Mazumdar
Advances in Neural Information Processing Systems (NeurIPS), 2021.Fuzzy Clustering with Similarity Queries
with Wasim Huleihel and Arya Mazumdar
Advances in Neural Information Processing Systems (NeurIPS), 2021.Learning User Preferences in Non-Stationary Environments.
with Wasim Huleihel and Ofer Shayevitz
International Conference on Artificial Intelligence and Statistics (AISTATS), 2021.Recovery of sparse linear classifiers from mixture of responses.
with Venkata Gandikota and Arya Mazumdar
Advances in Neural Information Processing Systems (NeurIPS), 2020.Recovery of Sparse Signals from a Mixture of Linear Samples
with Arya Mazumdar
International Conference on Machine Learning (ICML), 2020.High Dimensional Discrete Integration by Hashing and Optimization
with Raj Kumar Maity and Arya Mazumdar
Uncertainty in Artificial Intelligence (UAI), 2020.Algebraic and Analytic Approaches for Parameter Learning in Mixture Models
with Akshay Krishnamurthy, Arya Mazumdar and Andrew McGregor
Algorithmic Learning Theory (ALT), 2020.Same-Cluster Querying for Overlapping Clusters
with Wasim Huleihel, Arya Mazumdar and Muriel Medard
Advances in Neural Information Processing Systems (NeurIPS), 2019.Sample Complexity of Learning Mixture of Sparse Linear Regressions
with Akshay Krishnamurthy, Arya Mazumdar and Andrew McGregor
Advances in Neural Information Processing Systems (NeurIPS), 2019.Trace Reconstruction: Generalized and Parameterized
with Akshay Krishnamurthy, Arya Mazumdar and Andrew McGregor
European Symposium on Algorithms (ESA), 2019.Connectivity in Random Annulus Graphs and the Geometric Block Model
with Sainyam Galhotra, Arya Mazumdar and Barna Saha
International Conference on Randomization and Computation (RANDOM), 2019.The Geometric Block Model
with Sainyam Galhotra, Arya Mazumdar and Barna Saha
The Thirty-Second AAAI Conference on Artificial Intelligence (AAAI), 2018.
Semisupervised Clustering, AND-Queries and Locally Encodable Source Coding
with Arya Mazumdar
Advances in Neural Information Processing Systems (NeurIPS), 2017. Spotlight
Workshop Publications
By year
The Geometric Block Model
with Sainyam Galhotra, Arya Mazumdar and Barna Saha
NeurIPS 2017 Workshop on Learning on Distributions, Functions, Graphs and Groups, 2017.