Title: FSDA: A MATLAB toolbox for robust analysis and interactive data exploration
Authors: RIANI MarcoPERROTTA DomenicoTORTI Francesca
Citation: CHEMOMETRICS AND INTELLIGENT LABORATORY SYSTEMS vol. 116 no. July 2012 p. 17–32
Publisher: ELSEVIER SCIENCE BV
Publication Year: 2012
JRC N°: JRC67507
ISSN: 0169-7439
URI: http://www.sciencedirect.com/science/article/pii/S0169743912000974
http://publications.jrc.ec.europa.eu/repository/handle/JRC67507
DOI: 10.1016/j.chemolab.2012.03.017
Type: Articles in Journals
Abstract: We present the FSDA (Forward Search for Data Analysis) toolbox, a new software library that extends MATLAB and its Statistics Toolbox to support a robust and efficient analysis of complex datasets, affected by different sources of heterogeneity. As the name of the library indicates, the project was born around the Forward Search approach, but it has evolved to include the main traditional robust multivariate and regression techniques, including LMS, LTS, MCD, MVE, MM and S estimation. To address problems where data deviate from typical model assumptions, tools are available for robust data transformation and robust model selection. When different views of the data are available, e.g. a scatterplot of units and a plot of distances of such units from a fitted model, FSDA links such views and offers the possibility to interact with them. For example, selections of objects in a plot are highlighted in the other plots. This considerably simplifies the exploration of the data in view of extracting information and detecting patterns. We show the potential of the FSDA in chemometrics using data from chemical and pharmaceutical problems, where the presence of outliers, multiple groups, deviations from normality and other complex structures are not exceptional circumstances.
JRC Institute:Institute for the Protection and Security of the Citizen

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