Bi-Weekly Talk: Christoph Standke: The Importance of Parameters in Database Queries

Wednesday, November 08, 2023, 10:30am

Location: RWTH Aachen University, Department of Computer Science - Ahornstr. 55, building E3, room 9u10

Speaker: Christoph Standke



In this talk, we gently introduce a framework for quantifying the importance of the choices of parameter values to the result of a query over a database. In our framework, the importance of a parameter is measured by its SHAP score. This score is a popular instantiation of the game-theoretic Shapley value to measuring the importance of feature values in machine learning models. We make the case for the rationale of usingthis score by explaining the intuition behind SHAP, and by showing that we arrive at this score in two different, apparently opposing, approaches to quantifying the contribution of a parameter. We then point out that this framework yields an interesting complexity-theoretic landscape.