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Siavash Ameli

3 accepted papers

2025

A Statistical Framework for Ranking LLM-based Chatbots

ICLR 2025poster

Large language models (LLMs) have transformed natural language processing, with frameworks like Chatbot Arena providing pioneering platforms for evaluating these models. By facilitating millions of pairwise comparisons based on human judgments, Chatbot Arena has become a cornerstone in LLM evaluatio…

2025

Determinant Estimation under Memory Constraints and Neural Scaling Laws

ICML 2025poster

Calculating or accurately estimating log-determinants of large positive semi-definite matrices is of fundamental importance in many machine learning tasks. While its cubic computational complexity can already be prohibitive, in modern applications even storing the matrices themselves can pose a memo…

2025

Spectral Estimation with Free Decompression

NeurIPS 2025spotlight

Computing eigenvalues of very large matrices is a critical task in many machine learning applications, including the evaluation of log-determinants, the trace of matrix functions, and other important metrics. As datasets continue to grow in scale, the corresponding covariance and kernel matrices bec…

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