The STATIS method, proposed by L’Hermier des Plantes and Escoufier, is used to analyze multiple data tables in which is very common that each of the tables have information concerning the same set of individuals. The differences and similitudes between said tables are analyzed by means of a structure called the compromise. In this paper we present a new algorithm for applying the STATIS method when the input consists of interval data. This proposal is based onMoore’s interval arithmetic and the Centers Method for Principal Component Analysis with interval data, proposed by Cazes el al. [5]. In addition to presenting the INTERSTATIS method in an algorithmic way, an execution example is shown, alongside the interpretation of its results.
Keywords: InterStatis, Statis, interval arithmetic, interval data, symbolic data analysis.
Resumen
El método STATIS, propuesto por L’Hermier des Plantes y Escoufier, se utiliza para analizar múltiples tablas de datos en las cuales es muy frecuente que cada una de la tablas tenga información referente al mismo conjunto de individuos. Las diferencias y similitudes entre dichas tablas se analizan por medio de una estructura llamada compromiso. En este trabajo se presenta un nuevo algoritmo, denominado INTERSTATIS, del método STATIS para el caso cuando los datos de entrada son todos de tipo intervalo. Esta propuesta se basa en la aritmética de intervalos de Moore y el Método de Centros para el Análisis de Componentes Principales con datos de tipo intervalo, propuesto por Cazes et al. [5]. Además de presentar el método INTERSTATIS de forma algorítmica, un ejemplo de ejecución es presentado, junto con la interpretación de sus resultados. ]]>
Palabras clave: InterStatis, Statis, aritmética de intervalos, datos tipo intervalo, análisis de datos simbólico.
Mathematics Subject Classification: 62-07. Ver contenido disponible en pdf
References
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*Correspondencia a: David Corrales: HP Networking R&D, San José, Costa Rica. E-Mail: david.corrales@hp.com Oldemar Rodríguez: CIMPA, University of Costa Rica, San José, Costa Rica. E-Mail: oldemar.rodriguez@ucr.ac.cr *HP Networking R&D, San José, Costa Rica. E-Mail: david.corrales@hp.com †CIMPA, University of Costa Rica, San José, Costa Rica. E-Mail: oldemar.rodriguez@ucr.ac.cr ]]>