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Electronic Colloquium on Computational Complexity

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REPORTS > AUTHORS > HARRY SHA:
All reports by Author Harry Sha:

TR26-282 | 27th October 2026
Swastik Kopparty, Harry Sha

An Improved Johnson Bound for List-Decoding with Hints

This paper studies when list-decodability guarantees for error-correcting codes of good distance can go beyond the classical Johnson radius and gives a corresponding efficient list-decoding algorithm for Reed-Solomon codes up to this new radius. The Johnson bound shows that any error-correcting code with distance $\delta$ is automatically list-decodable with small ... more >>>


TR24-177 | 29th October 2024
Swastik Kopparty, Harry Sha

Small Shadow Partitions

We study the problem of partitioning the unit cube $[0,1]^n$ into $c$ parts so that each $d$-dimensional axis-parallel projection has small volume.

This natural combinatorial/geometric question was first studied by Kopparty and Nagargoje [KN23] as a reformulation of the problem of determining the achievable parameters for seedless multimergers -- which ... more >>>


TR24-148 | 5th October 2024
Swastik Kopparty, Mrinal Kumar, Harry Sha

High Rate Multivariate Polynomial Evaluation Codes

Revisions: 1

The classical Reed-Muller codes over a finite field $\mathbb{F}_q$ are based on evaluations of $m$-variate polynomials of degree at most $d$ over a product set $U^m$, for some $d$ less than $|U|$. Because of their good distance properties, as well as the ubiquity and expressive power of polynomials, these codes ... more >>>




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