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Archan Ray

3 accepted papers

2025

A Unified Framework for Provably Efficient Algorithms to Estimate Shapley Values

NeurIPS 2025poster

Shapley values have emerged as a critical tool for explaining which features impact the decisions made by machine learning models. However, computing exact Shapley values is difficult, generally requiring an exponential (in the feature dimension) number of model evaluations. To address this, many mo…

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2022

Sublinear Time Approximation of Text Similarity Matrices

AAAI 2022technical

We study algorithms for approximating pairwise similarity matrices that arise in natural language processing. Generally, computing a similarity matrix for n data points requires Omega(n^2) similarity computations. This quadratic scaling is a significant bottleneck, especially when similarities are c…