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cs.LG2026
Structure, Not Belief: Correlated Thompson Sampling from LLM-Derived Covariance in Combinatorial Semi-Bandits
Vikram Kakaria, Anish Kataria, Anany Kotawala
Combinatorial Thompson sampling (CTS) draws independent posterior samples for every arm, so its exploration dynamics ignore any relation among arms. We study a minimal change to th…
cs.LG2026
NumLeak: Public Numeric Benchmarks as Latent Labels in Foundation Models
Anany Kotawala
Public numeric benchmarks appear in pretraining, so an evaluation that conditions on a date may be measuring memorized recall rather than out-of-sample skill. We introduce NumLeak,…