Indian Statistical Institute

output

19952026

most citedHybridSN: Exploring 3D-2D CNN Feature Hierarchy for Hyperspectral Image Classification

1.9k citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

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Showing 2018Show all

128 papers · 1 filter

math.OA2018

Hyperrigid generators in C*-algebras

P. Shankar

In this article, we show that, if $S \in B (H)$ is irreducible and essential unitary, then ${S, S S^{*}}$ is a hyperrigid generator for the unital $C^{*}$ -algebra $T$ …

physics.flu-dyn2018★ 3 cited

Development of bed forms due to waves blocked by a counter current

Debasmita Chatterjee, Subir Ghosh, B. S. Mazumder +1

Experiments are conducted in a laboratory flume on the propagation of a surface wave against unidirectional flow with a sediment bed. This paper presents the spatial variation of b…

math.OC2018

Iterative Descent Method for Generalized Leontief Model

R. Jana, A. K. Das, Vishnu Narayan Mishra

In this paper we consider generalized Leontief model. We show that under certain condition the generalized Leontief model is solvable by iterative descent method based on infeasibl…

cs.DL2018

Gender and Research Publishing in India: Uniformly high inequality?

Mike Thelwall, Carol Bailey, Meiko Makita +2

Women's access to academic careers has been historically limited by discrimination and cultural constraints. Comprehensive information about gender inequality within disciplines is…

cs.CV2018

Image Dehazing via Joint Estimation of Transmittance Map and Environmental Illumination

Sanchayan Santra, Ranjan Mondal, Pranoy Panda +2

Haze limits the visibility of outdoor images, due to the existence of fog, smoke and dust in the atmosphere. Image dehazing methods try to recover haze-free image by removing the e…

math.OA2018★ 4 cited

Roots of Completely Positive Maps

B. V. Rajarama Bhat, Robin Hillier, Nirupama Mallick +1

We introduce the concept of completely positive roots of completely positive maps on operator algebras. We do this in different forms: as asymptotic roots, proper discrete roots an…

math.PR2018★ 16 cited

Smallest singular value and limit eigenvalue distribution of a class of non-Hermitian random matrices with statistical application

Arup Bose, Walid Hachem

Suppose $X$ is an $N \times n$ complex matrix whose entries are centered, independent, and identically distributed random variables with variance $1/ n$ and whose fourth moment is o…

physics.soc-ph2018★ 10 cited

Inequality in Death from Social Conflicts: A Gini & Kolkata indices-based Study

Antika Sinha, Bikas K. Chakrabarti

Human deaths caused by individual man-made conflicts (e.g., wars, armed-conflicts, terrorist-attacks etc.) occur unequally across the events (conflicts) and such inequality (in dea…

math.FA2018

Multiplicities, invariant subspaces and an additive formula

Arup Chattopadhyay, Jaydeb Sarkar, Srijan Sarkar

Let $T = (T_{1}, \dots, T_{n})$ be a commuting tuple of bounded linear operators on a Hilbert space $H$ . The multiplicity of $T$ is the cardinality of a minimal generating s…

cs.DC2018★ 2 cited

Efficient Dispersion of Mobile Robots on Arbitrary Graphs and Grids

Ajay D. Kshemkalyani, Anisur Rahaman Molla, Gokarna Sharma

The mobile robot dispersion problem on graphs asks $k \leq n$ robots placed initially arbitrarily on the nodes of an $n$ -node anonymous graph to reposition autonomously to reach a c…

math.OA2018★ 1 cited

From a Kac algebra subfactor to Drinfeld double

Sandipan De

Given a finite-index and finite-depth subfactor, we define the notion of \textit{quantum double inclusion} - a certain unital inclusion of von Neumann algebras constructed from the…

cond-mat.mes-hall2018★ 20 cited

Particle current rectification in a quasi-periodic double-stranded ladder

Madhumita Saha, Santanu K. Maiti

We report transport properties and particle current rectification operation in a double-stranded tight-binding ladder network within non-equilibrium Green's function (NEGF) formali…

nlin.CD2018★ 18 cited

Synchronization of chaotic systems: A microscopic description

Nir Lahav, Irene Sendina-Nadal, Chittaranjan Hens +4

The synchronization of coupled chaotic systems represents a fundamental example of self organization and collective behavior. This well-studied phenomenon is classically characteri…

cond-mat.mes-hall2018★ 9 cited

Unconventional charge and spin dependent transport properties of a graphene nanoribbon with line-disorder

Sudin Ganguly, Saurabh Basu, Santanu K. Maiti

Electronic transport with a line (or a few lines) of Anderson type disorder in a zigzag graphene nanoribbon is investigated in presence of Rashba spin-orbit interaction. Such line…

hep-ph2018★ 10 cited

Scope of strongly self-interacting thermal WIMPs in a minimal $U (1)_{D}$ extension and its future prospects

Rahool Kumar Barman, Biplob Bhattacherjee, Arindam Chatterjee +2

In this work we have considered a minimal extension of Standard Model by a local $U (1)$ gauge group in order to accommodate a stable (fermionic) Dark Matter (DM) candidate. We have…

math.FA2018

Approximate Birkhoff-James orthogonality and smoothness in the space of bounded linear operators

Arpita Mal, Kallol Paul, T. S. S. R. K. Rao +1

We study approximate Birkhoff-James orthogonality of bounded linear operators defined between normed linear spaces $X$ and $Y .$ As an application of the results o…

math.NT2018

An abelian analogue of Schanuel's conjecture and applications

Patrice Philippon, Biswajyoti Saha, Ekata Saha

In this article we study an abelian analogue of Schanuel's conjecture. This conjecture falls in the realm of the generalised period conjecture of Y. Andr{é}. As shown by C. Bertoli…

cs.CR2018★ 37 cited

Design of Anonymous Endorsement System in Hyperledger Fabric

Subhra Mazumdar, Sushmita Ruj

Permissioned Blockchain has become quite popular with enterprises forming consortium since it prioritizes trust over privacy. One of the popular platforms for distributed ledger so…

cs.CV2018★ 30 cited

A Deep One-Shot Network for Query-based Logo Retrieval

Ayan Kumar Bhunia, Ankan Kumar Bhunia, Shuvozit Ghose +3

Logo detection in real-world scene images is an important problem with applications in advertisement and marketing. Existing general-purpose object detection methods require large…

nlin.AO2018★ 60 cited

Explosive synchronization in phase-frustrated multiplex networks

Pitambar Khanra, Prosenjit Kundu, Chittaranjan Hens +1

We investigate the phenomenon of first order transition (explosive synchronization (ES)) in adaptively coupled phase-frustrated bi-layer multiplex network. We consider Sakaguchi-Ku…

stat.ME2018★ 10 cited

The B-Exponential Divergence and its Generalizations with Applications to Parametric Estimation

Taranga Mukherjee, Abhijit Mandal, Ayanendranath Basu

In this paper a new family of minimum divergence estimators based on the Bregman divergence is proposed, where the defining convex function has an exponential nature. These estimat…

cs.LG2018★ 3 cited

Superensemble Classifier for Improving Predictions in Imbalanced Datasets

Tanujit Chakraborty, Ashis Kumar Chakraborty

Learning from an imbalanced dataset is a tricky proposition. Because these datasets are biased towards one class, most existing classifiers tend not to perform well on minority cla…

cond-mat.mes-hall2018★ 14 cited

Controlled engineering of spin polarized transport properties in a zigzag graphene nanojunction