Department of Computational and Data Sciences
Department Seminar
Speaker : Prof. S. Lakshmivarahan, School of Computer Science, University of Oklahoma and International Visiting Faculty, EE Department, IISc.
Title : Mathematics of Bigdata Analysis
Date & Time: January 07th, 2026 (Wednesday), 04:00 PM
Venue : # 102, CDS Seminar Hall
ABSTRACT
Advances in sensor, wireless communication, large scale storage devices, and access to super computers has ushed in the Bigdata regime. There are four ways to organize this data – time series, spatial data, spatio-temporal data, and data in the matrix form. In this talk we will consider a data set where n points are distributed in an m- dimensional space represented by a m by n matrix where m > n. Classical statistics deal with the asymptotic analysis when m if fixed and n grows such that the ratio m/n goes to zero. In the bigdata regime, we are often called to consider the case when m and n are large, but the ration m/n is positive where the classical results only lead to suboptimal results. This talk will provide an overview of the behavior of volume, distance and probability measures and provide an example of the estimation of covariance matrices of large dimensions.
BIO: After completing his PhD from the Indian Institute of Science in 1973, S. Lakshmivarahan held faculty and post-doctoral positions at the IIT-Madras, Brown and Yale Universities through 1978. In the Fall of 1978, he joined the School of Computer Science, University of Oklahoma (OU) where he held the position of George Lynn Cross Research Professor since 1995. His research interests are in Applied Mathematics and Computation and includes Data Mining and Analytics, Data Assimilation, Computational Finance, Parallel Computation and Learning Algorithms. He is an author/coauthor of six books in these areas. He was elected as a Fellow of the IEEE in 1993 and a Fellow of ACM in 1995. He has held short-term visiting positions in Japan, China, Taiwan, Thailand, India, Germany, England, Mexico, Brazil, Canada, and USA. Since July 2019, he has held the position of George Lynn Cross Research Professor Emeritus at the School of Computer Science, OU.
Host Faculty: Prof. Murugesan Venkatapathi
ALL ARE WELCOME
