Dr. Ishapathik Das

Associate Professor

I

My research interests span generalized linear models, Bayesian inference, biostatistics, dependence modeling using copulas, and spatial and spatio-temporal statistical models.

Alexander Chen
Get to Know Me

Hi! I am Ishapathik

I am currently serving as Associate Professor and Head of the Department of Mathematics and Statistics at IIT Tirupati. I received my academic training in Statistics from some of India’s premier institutions—earning a Ph.D. from IIT Bombay, an M.Sc. from IIT Kharagpur, and a B.Sc. from the University of Calcutta. I further broadened my research experience through a postdoctoral fellowship at Duke University, USA.

My research lies at the intersection of statistical theory and applications, with primary interests in generalized linear models, Bayesian inference, biostatistics, multivariate distributions, spatio-temporal modeling, and reliability and survival analysis. I actively publish in reputed international journals and collaborate on both theoretical and applied statistical problems motivated by real-world challenges.

15+
Publications
11+
Years Experience
90%
Course Feedback

I am deeply engaged in teaching and mentoring at the postgraduate and doctoral levels. Over the years, I have introduced new courses, supervised several Ph.D., M.Sc., and M.S. students, and contributed to curriculum development. I also actively participate in academic administration, program coordination, and institutional committees.

I am particularly interested in short-term international teaching and research collaboration, including visiting faculty roles and staff mobility programmes such as Erasmus+, with an emphasis on research-led modular teaching and academic exchange.

Outside academics, I maintain a strong creative interest in music and singing, and occasionally perform both classical and contemporary songs in my free time.

Scholars

Projects

Courses Taught

Conferences Attended

Resume

Profile

Professional Summary

I am currently serving as an Associate Professor and Head of the Department of Mathematics and Statistics at IIT Tirupati.

Education

Ph.D., Statistics

2008 - 2013

Indian Institute of Technology Bombay

Title: Topics in Generalized Linear Models with Applications to Dose Response Studies

Major: Statistics (9.7/10 in Ph.D. Course work)

MSc. Statistics & Informatics

2006 - 2008

Indian Institute of Technology Kharagpur

Major: Statistics and Informatics (9.0/10)

BSc. Mathematics

2000 - 2003

University of Calcutta

Major: Mathematics (67.25%)

Awards and Achievements

Elected member of the Executive Committee of Indian Society for Probability and Statistics for 2022-2023.
2022 - 2023
Selected for SERB Overseas Fellowship for doing Post Doctoral Research at University of Auckland, New Zealand
2015 - 2016
Received Raman Fellowship for doing Post Doctoral Research at Duke University, USA
2015 - 2016
Selected for CICOPS Fellowship for doing collaborative Research at University of Pavia, Italy
2015 - 2016
Received ‘UGC-Startup-Grant’ for newly recruited faculty
2014
Received 2nd prize in MATLAB coding competition, IIT Bombay
2013
Proficiency award for the best project work, IIT Kharagpur
2008
Institute silver medal for the best student, IIT Kharagpur
2008
Cleared joint CSIR-UGC Test for Junior Research Fellowship and Eligibility for Lectureship (NET) held on 22nd June
2008
Ranked 73 in GATE Examination (conducted by all IITs) in all over India
2008
Ranked 1 in M.Sc., IIT Kharagpur, Kharagpur, India
2008

Professional Experience

Associate Professor & Head

2024 - Present

IIT Tirupati

  • Department of Mathematics and Statistics, IIT Tirupati, India.

Assistant Professor

2017 - 2023

IIT Tirupati

  • Department of Mathematics and Statistics, IIT Tirupati, India.

Assistant Professor

2013 - 2016

Kumaun University

  • Department of Statistics, Kumaun University, SSJ Campus, Almora, India.

Visiting Scientist

2014

ISI Delhi

  • Indian Statistical Institute, Delhi, India

Research Experience

Post Doctoral Research Associate

Department of Statistical Science, Duke University, Durham, NC, USA
2016-2017

Research Scholar

Indian Institute of Technology Bombay
2008-2013

Project in MSc.

Indian Institute of Technology Kharagpur
2007-2008

Professional Memberships

Indian Society for Probability and Statistics Life Membership

Society of Statistics, Computer and Applications Life Membership

New Course Introduced

Introduced five-year integrated dual course (B.Sc.+M.Sc.) in Actuarial Science
Introduced Statistical Methods for Engineering
Introduced Generalized Linear Models

Skills

Programming Languages

  • FORTRAN
  • C, C++
  • JAVA
  • PERL
  • PROLOG
  • SQL

Software

  • R
  • MATLAB
  • SAS
  • LATEX

Conference Organized

Organized a national conference on “Recent Advances in Statistical and Mathematical Sciences and their Applications” during October 4-6, 2014 at Academic Staff College, Nainital, India.

Organized a workshop on “Geo-spatial Data Science” during December 9-14, 2022 at Department of Mathematics and Statistics, IIT Tirupati, India.

Area of Interests

My research focuses on the development and application of modern statistical methodology, with particular emphasis on dependence modeling, complex data structures, and real-world applications in health, reliability, and environmental sciences. Many of these topics also form the basis of research-led, modular teaching for postgraduate students.

Profile

Generalized Linear Models and Extensions (count data, zero-inflation, overdispersion, correlated responses)

Profile

Multivariate Distributions and Dependence Modeling (copulas, inlier-prone models, lifetime data)

Profile

Spatial and Spatio-Temporal Statistical Modeling (environmental, public health, and reliability applications)

Profile

Reliability, Survival, and Lifetime Data Analysis (censoring, inliers, Bayesian and classical approaches)

Profile

Applied Biostatistics and Health Data Analysis (regression, survival analysis, real-world case studies)

Profile

Bayesian Inference and Computation (MCMC, Hamiltonian Monte Carlo, NUTS)

Publications

Over the years, I have published research articles in reputed peer-reviewed journals, presented papers at international conferences, and contributed to academic book chapters. My research spans diverse areas including statistical modeling, environmental statistics, time series analysis, robust design, and Bayesian methods.


You may explore the categories below to view my work:

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Publications

Journal Publications

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Proceedings

Conference Proceedings

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Books

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Students

I have had the opportunity to guide several students in diverse areas of Statistics, including environmental statistics, multivariate modeling, finance, and time series analysis. Below is a list of students under my supervision:

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Students

Ph.D. Scholars

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Students

M.S. Scholars

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Students

NPTEL Predoc Student

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Students

MSc Project Students

Teaching

I have experience teaching a wide range of courses at undergraduate, postgraduate, and doctoral levels across different institutions. During my Ph.D. at IIT Bombay, I served as a Teaching Assistant for several MSc courses. I later taught undergraduate and postgraduate statistics courses at the Department of Statistics, Kumaun University. Since January 2018, I have been teaching core and elective courses at both undergraduate and postgraduate levels at IIT Tirupati, and have also contributed to Ph.D. coursework, refresher programmes, and orientation modules.


My teaching philosophy emphasises conceptual clarity, adaptability to diverse academic backgrounds, and active student engagement. Working with students from varied educational backgrounds has helped me refine my teaching approach to accommodate different learning needs within a single classroom.


I strongly believe in fostering a positive and engaging learning environment. As Richard Feynman famously observed, “Students don’t need a perfect teacher. Students need a happy teacher—one who excites them to come to class and grow a love for learning.”


I strive to nurture curiosity and enthusiasm, going beyond the delivery of information to ignite a genuine interest in the subject.


I am open to delivering short, modular guest lectures from these courses or offering research-led specialised topics for international teaching and academic exchange programmes, depending on the needs of the host institution.

Courses Taught

Undergraduate

  • Probability Theory
  • Stochastic Process
  • Time Series Analysis
  • Multivariate Statistical Analysis
  • Linear Algebra

Post Graduate

  • Statistical Methods
  • Statistical Inference
  • Regression Analysis
  • Sampling Theory and Design of Experiments

Ph.D. Coursework

  • Advanced Statistical Inference
  • Computer Applications

Refresher / Orientation Programs

  • Introduction to R

New Course Introduced

  • Introduced five-year integrated dual course (B.Sc.+M.Sc.) in Actuarial Science
  • Introduced Statistical Methods for Engineering
  • Introduced Generalized Linear Models

Projects

Sponsoring Agency Title of the Project Period Amount Status
UGC Robust Designs in Multinomial Models Two years Rs 6 lacs only Completed
SERB Regression Models for Doubly Inflated Multivariate Count Data using Copula Two years Rs 9.79 lacs Completed

Gallery

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Teacher's Day 2025

Department Poster

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Teaching

Classroom Photo

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Former ISRO Chairman Sri Kiran Kumar

Photo with Former ISRO Chairman Sri Kiran Kumar

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Department Group Photo

Department Group Photo

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Teacher's Day 2025

With Students

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Teacher's Day 2025

Teacher's Day Celebration

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Teacher's Day 2025

Faculty's group photo

Contact

Dr. Ishapathik Das

Associate Professor & Head of the Department of Mathematics and Statistics

Our Location

No. 325, Third Floor, Academic Building - 1,

Department of Mathematics and Statistics,

Indian Institute of Technology Tirupati

Yerpedu-Venkatagiri Road, Yerpedu Post,

Tirupati District – 517619,

Andhra Pradesh, India.

Phone Number

0877 250 3350 / 3357

+91-6281022263

Email Address

ishapathik@iittp.ac.in

hod_ma@iittp.ac.in