Tag
The MS AI Frontiers team introduces BenchPress, a method that uses matrix completion to predict LLM benchmark scores from just five probes, showing the score matrix is effectively rank-2.
This paper introduces a distributional generalization of matrix completion where each entry is a probability distribution rather than a scalar, using kernel mean embeddings and Tucker rank to capture low-rank structure. The authors propose a novel estimator with non-asymptotic error bounds and demonstrate effectiveness on synthetic and real-world data.