Author

Erfan Hajihashemi

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Preprint Oct 2026

Vertex Ordering for Exact Triangle Listing: Concave Geometry and Certified Rounding

Exact forward triangle listers orient each edge of a graph by a vertex order. The order does not change the output, but it changes the work. For the adaptive lister, which scans the smaller of the two forward neighborhoods, the number of candidate tests is a known sum of minima of forward degrees, but how to optimize i...

Kourosh Mirsohi, Melika Gorgi, Erfan Hajihashemi · 0 citations

#machine learning Preprint Oct 2026

Online Verification of Language Model Responses Under Cost Constraints

As large language models are increasingly deployed for multi-step reasoning, verifying the correctness of their outputs has become essential for maintaining reliability at scale. Verifying the correctness of large language model outputs is often done by querying a costly ground-truth oracle, which is impractical to inv...

Erfan Hajihashemi, Yan-Ning Shen · 0 citations