Georgios Theocharous

Graphical Model Sketch

2016 · arXiv (Cornell University)

Structured high-cardinality data arises in many domains, and poses a major challenge for both modeling and inference. Graphical models are a popular approach to modeling structured data but they are unsuitable for high-cardinality variables. The …

Off-Policy Evaluation in Embedded Spaces

2022 · arXiv (Cornell University)

Off-policy evaluation methods are important in recommendation systems and search engines, where data collected under an existing logging policy is used to estimate the performance of a new proposed policy. A common approach to this …