Patrick Mair

Patrick Mair

Harvard
, BH 227

Abstract

Multidimensional Scaling in Action

This talk presents some recent and current developments in the area of multidimensional scaling, an exploratory method that represents proximities among objects as distances among points in a low-dimensional space. After a brief introduction to state-of-the-art MDS techniques and some computational discussions, the focus of the talk shifts to MDS goodness-of-fit assessment with special emphasis on permutation tests. Subsequently, structural components (e.g., clustering) are integrated into the MDS target function (we call this “cluster-optimized proximity scaling”). The final segment concerns the use of sup-port vector machines within an MDS context, which aims to separate the MDS space into facets in a (non-)linear way ac-cording to a supervised classification problem.