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Electronic Colloquium on Computational Complexity

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REPORTS > AUTHORS > ARIJIT GHOSH:
All reports by Author Arijit Ghosh:

TR20-135 | 9th September 2020
Sourav Chakraborty, Arijit Ghosh, Gopinath Mishra, Sayantan Sen

Estimation of Graph Isomorphism Distance in the Query World

Revisions: 2

The graph isomorphism distance between two graphs $G_u$ and $G_k$ is the fraction of entries in the adjacency matrix that has to be changed to make $G_u$ isomorphic to $G_k$. We study the problem of estimating, up to a constant additive factor, the graph isomorphism distance between two graphs in ... more >>>


TR20-114 | 22nd July 2020
Anup Bhattacharya, Sourav Chakraborty, Arijit Ghosh, Gopinath Mishra, Manaswi Paraashar

Disjointness through the Lens of Vapnik–Chervonenkis Dimension: Sparsity and Beyond

The disjointness problem - where Alice and Bob are given two subsets of $\{1, \dots, n\}$ and they have to check if their sets intersect - is a central problem in the world of communication complexity. While both deterministic and randomized communication complexities for this problem are known to be ... more >>>


TR20-108 | 19th July 2020
Arijit Bishnu, Arijit Ghosh, Gopinath Mishra, Manaswi Paraashar

Query Complexity of Global Minimum Cut

Revisions: 1

In this work, we resolve the query complexity of global minimum cut problem for a graph by designing a randomized algorithm for approximating the size of minimum cut in a graph, where the graph can be accessed through local queries like \textsc{Degree}, \textsc{Neighbor}, and \textsc{Adjacency} queries.

Given $\epsilon \in (0,1)$, ... more >>>




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