Automatic error localisation for categorical, continuous and integer data.

Título inglés	Automatic error localisation for categorical, continuous and integer data.
Título español	Localización automática de errores para datos categóricos, continuos y enteros.
Autor/es	Waal, Ton de
Organización	Statist. Netherlands, Voorburg, Holanda
Revista	1696-2281
Publicación	2005, 29 (1): 57-100, 49 Ref.
Tipo de documento	articulo
Idioma	Inglés
Resumen inglés	Data collected by statistical offices generally contain errors, which have to be corrected before reliable data can be published. This correction process is referred to as statistical data editing. At statistical offices, certain rules, so-called edits, are often used during the editing process to determine whether a record is consistent or not. Inconsistent records are considered to contain errors, while consistent records are considered error-free. In this article we focus on automatic error localisation based on the Fellegi-Holt paradigm, which says that the data should be made to satisfy all edits by changing the fewest possible number of fields. Adoption of this paradigm leads to a mathematical optimisation problem. We propose an algorithm to solve this optimisation problem for a mix of categorical, continuous and integer-valued data. We also propose a heuristic procedure based on the exact algorithm. For five realistic data sets involving only integer-valued variables we evaluate the performance of this heuristic procedure.
Clasificación UNESCO	120900 ; 120707
Palabras clave español	Datos estadísticos ; Corrección de errores ; Programación matemática ; Programación entera ; Optimización ; Heurística ; Datos categóricos
Código MathReviews	MR2160537
Acceso al artículo completo