SIGNAL Group

Alumni

This page lists former doctoral students, postdoctoral fellows, and other research associates who have worked in this group and have coauthored at least one research paper or case study.

The alumni directory is intended to document the academic and professional journeys of people associated with the SIGNAL Group and to help future students, collaborators, and alumni understand the range of research areas connected with the group.

If you are an alumnus of this group and want your information to be added/modified, please send an email to soudeeps.research.group@gmail.com.

PhD students

Anchal Soni

Anchal Soni

PhD, IIM Bangalore

Graduated February 2023

Current Senior Consultant, WNS Global Services, India

Time series · Dimension reduction · Financial data · Multivariate data

SIGNAL Group publications

A wavelet-based methodology to compare the impact of pandemic versus Russia-Ukraine conflict on crude oil sector and its interconnectedness with other energy and non-energy markets

Roy, A., Soni, A., Deb, S. · 2023

Energy Economics, 124, 106830

Published
Siddharth Rawat

Siddharth Rawat

PhD, IIM Bangalore

Graduated May 2023

Current Postdoctoral Fellow, NIEHS, USA

Spatio-temporal modelling · Public health · Environmental research · Bayesian methods

SIGNAL Group publications

A spatio-temporal statistical model to analyze COVID-19 spread in the USA

Rawat, S., Deb, S. · 2023

Journal of Applied Statistics, 50(11-12), 2310-2329

Published

A Bayesian approach to identify changepoints in spatio-temporal ordered categorical data: An application to COVID-19 data

Rawat, S., Durrant, A., Simpson, A., Nielson, G., Berrett, C., Deb, S. · 2023

arXiv

Under resubmission
Kapil Gupta

Kapil Gupta

PhD, IIM Bangalore

Graduated March 2025

Current Assistant Professor, IIM Kozhikode, India

Spatio-temporal modelling · Real estate · Sports analytics · Bayesian methods

SIGNAL Group publications

What elements of the opening set influence the outcome of a tennis match? An in-depth analysis of Wimbledon data

Gupta, K., Krishnamurthy, V., Deb, S. · 2025

IIMB Management Review, 37(1), 100519

Published

A divide-and-conquer approach for spatio-temporal analysis of large house price data from Greater London

Gupta, K., Deb, S. · 2025

Annals of Operations Research, 1-42

Published

CPRI-Office: A new commercial property rental index for Indian cities using spatio-temporal modeling techniques

Gupta, K., Srivastava, S., Deb, S., Panchapagesan, V. · 2025

IIMB Working Paper No. 727/2025

Working paper

A review and recommendations on variable selection methods in regression models for binary data

Bag, S., Gupta, K., Deb, S. · 2022

arXiv

Under resubmission
Archi Roy

Archi Roy

PhD, IISER Pune (co-supervised)

Graduated August 2025

Current Assistant Professor, IIM Kozhikode, India

Time series · Nonparametrics · Financial data · Applied probability

SIGNAL Group publications

A nonparametric approach to understand multivariate quantile dynamics in financial time series

Rai, K., Roy, A., Dattner, I., Deb, S. · 2026

arXiv

Pre-print

A data-driven approach to spatial zoning and anomaly detection in the dynamic real estate network

Basu Sarbadhikary, S., Roy, A., Deb, S. · 2025

Environment and Planning B: Urban Analytics and City Science, 23998083251411954

Published

Impact of COVID-19 on public social life and mental health: A statistical study of Google Trends data from the USA

Roy, A., Deb, S., Chakarwarti, D. · 2024

Journal of Applied Statistics, 51(3), 581-605

Published

Nonparametric method of structural break detection in stochastic time series regression model

Roy, A., Podder, M., Deb, S. · 2024

arXiv

Pre-print

A wavelet-based methodology to compare the impact of pandemic versus Russia-Ukraine conflict on crude oil sector and its interconnectedness with other energy and non-energy markets

Roy, A., Soni, A., Deb, S. · 2023

Energy Economics, 124, 106830

Published

Postdoctoral fellows

Reetha Thomas

Reetha Thomas

DST Postdoctoral Fellow

During 2024 - 2025

Current Assistant Professor, IIIT Kottayam, India

Deep learning · Quantile regression · Environmental research

Mohd Irfan

Mohd Irfan

Postdoctoral Fellow

2026

Real estate · Bayesian methods · Mixture model

Key research fellows

Souvik Bag

Souvik Bag

Predoctoral Fellow

During 2021 - 2022

Current PhD Student, University of Missouri, USA

Variable selection · Binary data · Machine learning

SIGNAL Group publications

A review and recommendations on variable selection methods in regression models for binary data

Bag, S., Gupta, K., Deb, S. · 2022

arXiv

Under resubmission
Shreyash S Deshmukh

Shreyash S Deshmukh

Predoctoral Fellow

During 2023 - 2024

Current PhD Student, IIM Kozhikode, India

Public health · Quantile regression · Time series

SIGNAL Group publications

A survey of statistical and machine learning methods of quantile regression in time series and their suitability in predicting dengue outbreaks

Deshmukh, S. S., Deb, S. · 2025

Japanese Journal of Statistics and Data Science, 8(1), 641-689

Published
Satyaki Basu Sarbadhikary

Satyaki Basu Sarbadhikary

Research Associate

During 2024 - 2025

Current PhD Student, National University of Singapore

Changepoint · Network · Sports analytics · Real estate · Policy evaluation

SIGNAL Group publications

A data-driven approach to spatial zoning and anomaly detection in the dynamic real estate network

Basu Sarbadhikary, S., Roy, A., Deb, S. · 2025

Environment and Planning B: Urban Analytics and City Science, 23998083251411954

Published
Snehil Maurya

Snehil Maurya

MS Thesis, IISER Mohali

During 2025 - 2026

Current Data Analyst, Deloitte (to join), India

Financial data · Optimization · Machine learning

Other notable research assistants

  • Mareeswaran M: Worked during 2021-23 as a research assistant, while he was a PhD student in the Finance & Accounting area at IIM Bangalore. Later joined Queens University Belfast, Gift City, as a faculty.
  • Meghana Krishna: Worked during 2024-25 as a research assistant.
  • Sreeranjini TM: Worked during 2023-25, later joined doctoral program at Indian Institute of Technology Bombay.
  • Anagh Chattopadhyay: Worked during 2021-23, later joined doctoral program at Johns Hopkins University.
  • Manit Paul: Worked during 2021-22, later joined doctoral program at University of Pennsylvania.
  • Anirban Nath: Worked during 2021-22, later joined doctoral program at Columbia University.
  • Shubhajit Sen: Worked during 2020-23, later joined doctoral program at North Carolina State University.
  • Divya Chakarwarti: Worked during 2021-22, later joined Google as Software Engineer.
  • Siddhant Nahata: Worked during 2020-21, later joined McKinsey & Co as Business Analyst.