Guest Talk: The role of Mathematical Optimization to enhance Interpretability in Data Science

 

Friday, April 26, 2019, 2:30pm

Location: RWTH Aachen University, SeMath - Pontdriesch 14-16, Room 008

Speaker: Dolores Romero Morales, Copenhagen Business School

 

A talk by Dolores Romero Morales as part of the Mathematics Colloquium:

The role of Mathematical Optimization to enhance Interpretability in Data Science

 

Abstract:

Data Science aims to develop models that extract knowledge from complex data and represent it to aid Data Driven Decision Making. Mathematical Optimization has played a crucial role across the three main pillars of Data Science, namely Supervised Learning, Unsupervised Learning and Information Visualization. For instance, Quadratic Programming is used in Support Vector Machines, a Supervised Learning tool. Mixed-Integer Programming is used in Clustering, an Unsupervised Learning task. Global Optimization is used in MultiDimensional Scaling, an Information Visualization tool.

Data Science models should strike a balance between accuracy and interpretability. Interpretability is desirable, for instance, in medical diagnosis; it is required by regulators for models aiding, for instance, credit scoring; and since 2018 the EU extends this requirement by imposing the so-called right-to-explanation. In this presentation, we discuss recent Mathematical Optimization models that enhance the interpretability of state-of-art supervised learning tools, such as nearest neighbors, classification trees and support vector machines, while preserving their good learning performance.