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Krishnendu Chatterjee

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SuperDP: Differential Privacy Refutation via SupermartingalesPLDI 20262026-06-15
Method claims automated, sound refutation of ε‑DP by searching for a pair of inputs and a nonnegative output function whose expectations violate the ε bound…
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Quantitative Bounds on Resource Usage of Probabilistic ProgramsOOPSLA 20242024-10-20
Extends cost supermartingales to yield sound expectation bounds for programs with positive and negative costs and unbounded updates provided a lower bounded…
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Equivalence and Similarity Refutation for Probabilistic ProgramsPLDI 20242024-06-24
Searches for a concrete output function f and automated certificates—an upper expectation supermartingale for one program and a lower expectation submartingale…
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The Reads-From Equivalence for the TSO and PSO Memory ModelsOOPSLA 20212021-10-17
Presents algorithms that decide reads-from (RF) consistency for TSO and PSO with explicit complexity: n^{k+1} bound for TSO and n^{k+1}·min(n^{k^2},2^{k·d})…
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