16 citations · 62 across the 28 of their papers we have counts for
29 papers
Community Detection using the Edge Laplacian Dynamics vis-a-vis Ricci Flow
Pratibha Bhandari, Soumyendu Raha
It has been found that utilizing the geometric properties of the graph dynamics can bring out crucial information of the data that a statistical analysis will not. The properties o…
Geometry-Consistent Bayesian Filtering under Structural Model Uncertainty: A Geometric Projection Particle Filter
Surya Ratna Prakash D, Soumyendu Raha
Nonlinear state estimation under structural model uncertainty remains a fundamental challenge in autonomous Guidance, Navigation, and Control (GNC) systems. Conventional Bayesian f…
Effective Resistance-Based Graph Sparsification and Community Detection
Jayanta Pari, Pratibha Bhandari, Soumyendu Raha
Community detection is a key task in network analysis, providing insight into the structural organization of complex systems. Effective resistance, a graph-theoretic metric derived…
Low Latency Stand Alone Compute-Efficient Forecasting of Marine Engine Time Series Data
Y. Harsha Vardhana Reddy, Soumyendu Raha
The operational reliability of a high performance marine vessel depends critically on the health of its marine propulsion systems, which are increasingly subjected to diverse opera…
Co-State Based Data Fusion and Risk Aware Filtering for Spacecraft Navigation and Hazard Prediction
Surya Ratna Prakash D, Soumyendu Raha
This paper develops a co-state based fusion frame work for spacecraft navigation, consistency monitoring, and hazard forecasting. A differential algebraic co-state is introduced as…
A graph based advection framework for climate-driven species distribution
Pranali Roy Chowdhury, Soumyendu Raha
Climate change is reshaping species interactions and movement across fragmented landscapes. Despite this, most mathematical models assume random diffusion, overlooking the influenc…
Transient Stability of Nonlinear Stochastic Dynamics: A Finite-Amplitude Logarithmic Measure Framework
Surya Ratna Prakash D, Soumyendu Raha
Spacecraft guidance, navigation, and control systems operating during mission-critical phases such as atmospheric entry, powered descent, and planetary landing require reliable ass…
Improving Surrogate Model Robustness to Perturbations for Dynamical Systems Through Machine Learning and Data Assimilation
Abhishek Ajayakumar, Soumyendu Raha
Many real-world systems are modelled using complex ordinary differential equations (ODEs). However, the dimensionality of these systems can make them challenging to analyze. Dimens…
SGRDN-Data learned sparsification of graph reaction-diffusion networks
Abhishek Ajayakumar, Soumyendu Raha
Graph sparsification is an area of interest in computer science and applied mathematics. Sparsification of a graph, in general, aims to reduce the number of edges in the network wh…
Explicitly Constrained Stochastic Differential Equations on Manifolds
Sumit Suthar, Soumyendu Raha
In this manuscript we consider Intrinsic Stochastic Differential Equations on manifolds and constrain it to a level set of a smooth function. Such type of constraints are known as…
Intrinsic Stochastic Differential Equations and Extended Ito Formula on Manifolds
Sumit Suthar, Soumyendu Raha
A general way of representing Stochastic Differential Equations (SDEs) on smooth manifold is based on Schwartz morphism. In this manuscript we are interested in SDEs on a smooth ma…
Progression, Detection and Remission: Evolution of Chronic Myeloid Leukemia using a three-stage probabilistic model
Sonjoy Pan, Siddhartha P. Chakrabarty, Soumyendu Raha
We present a three-stage probabilistic model for the progression of Chronic Myeloid Leukemia (CML), as manifested by the leukemic stem cells, progenitor cells and mature leukemic c…
Prediction of dynamical systems using geometric constraints imposed by observations
Saurabh Dixit, Soumyendu Raha
Solution of Ordinary Differential Equation (ODE) model of dynamical system may not agree with its observed values. Often this discrepancy can be attributed to unmodeled forcings in…
Metapopulation dynamics of a respiratory disease with infection during travel
Indrajit Ghosh, Sk Shahid Nadim, Soumyendu Raha +1
We formulate a compartmental model for the propagation of a respiratory disease in a patchy environment. The patches are connected through the mobility of individuals, and we assum…
On Explicit Stochastic Differential Algebraic Equations
Sumit Suthar, Soumyendu Raha
Dynamical systems that are subject to continuous uncertain fluctuations can be modelled using Stochastic Differential Equations (SDEs). Controlling such system results in solving p…
Modeling Control, Lockdown \& Exit Strategies for COVID-19 Pandemic in India
Madhab Barman, Snigdhashree Nayak, Manoj K. Yadav +2
COVID-19--a viral infectious disease--has quickly emerged as a global pandemic infecting millions of people with a significant number of deaths across the globe. The symptoms of th…
Stabilized Partitioning of Metapopulations Networks
Dinesh Kumar, Soumyendu Raha
A metapopulations network is a multi-patch habitat system, where populations live and interact in the habitat patches, and individuals disperse from one patch to the other via disp…
A quantitative study on the role of TKI combined with Wnt/-catenin signaling and IFN- in the treatment of CML through deterministic and stochastic approaches
Sonjoy Pan, Soumyendu Raha, Siddhartha P. Chakrabarty
We propose deterministic and stochastic models for studying the pharmacokinetics of chronic myeloid leukemia (CML), upon administration of IFN- (the traditional treatment for CM…
Efficient Realization of Givens Rotation through Algorithm-Architecture Co-design for Acceleration of QR Factorization
Farhad Merchant, Tarun Vatwani, Anupam Chattopadhyay +4
We present efficient realization of Generalized Givens Rotation (GGR) based QR factorization that achieves 3-100x better performance in terms of Gflops/watt over state-of-the-art r…
Achieving Efficient Realization of Kalman Filter on CGRA through Algorithm-Architecture Co-design
Farhad Merchant, Tarun Vatwani, Anupam Chattopadhyay +3
In this paper, we present efficient realization of Kalman Filter (KF) that can achieve up to 65% of the theoretical peak performance of underlying architecture platform. KF is real…
A Geometric Approach to Rotor Failure Tolerant Trajectory Tracking Control Design for a Quadrotor
Ashutosh Simha, Sharvaree Vadgama, Soumyendu Raha
This paper addresses the problem of designing a trajectory tracking control law for a quadrotor UAV, subsequent to complete failure of a single rotor. The control design problem co…
Efficient Realization of Householder Transform through Algorithm-Architecture Co-design for Acceleration of QR Factorization
Farhad Merchant, Tarun Vatwani, Anupam Chattopadhyay +3
We present efficient realization of Householder Transform (HT) based QR factorization through algorithm-architecture co-design where we achieve performance improvement of 3-90x in-…
Accelerating BLAS on Custom Architecture through Algorithm-Architecture Co-design
Farhad Merchant, Tarun Vatwani, Anupam Chattopadhyay +3
Basic Linear Algebra Subprograms (BLAS) play key role in high performance and scientific computing applications. Experimentally, yesteryear multicore and General Purpose Graphics P…
Accelerating BLAS and LAPACK via Efficient Floating Point Architecture Design
Farhad Merchant, Anupam Chattopadhyay, Soumyendu Raha +2
Basic Linear Algebra Subprograms (BLAS) and Linear Algebra Package (LAPACK) form basic building blocks for several High Performance Computing (HPC) applications and hence dictate p…