Optimal symbol alignment distance: A new distance for sequences of symbols

Javier Herranz, Jordi Nin, Marc Solé

Producció científica: Article en revista indexadaArticleAvaluat per experts

21 Cites (Scopus)


Comparison functions for sequences (of symbols) are important components of many applications, for example, clustering, data cleansing, and integration. For years, many efforts have been made to improve the performance of such comparison functions. Improvements have been done either at the cost of reducing the accuracy of the comparison, or by compromising certain basic characteristics of the functions, such as the triangular inequality. In this paper, we propose a new distance for sequences of symbols (or strings) called Optimal Symbol Alignment distance (OSA distance, for short). This distance has a very low cost in practice, which makes it a suitable candidate for computing distances in applications with large amounts of (very long) sequences. After providing a mathematical proof that the OSA distance is a real distance, we present some experiments for different scenarios (DNA sequences, record linkage, etc.), showing that the proposed distance outperforms, in terms of execution time and/or accuracy, other well-known comparison functions such as the Edit or Jaro-Winkler distances.

Idioma originalAnglès
Número d’article5601718
Pàgines (de-a)1541-1554
Nombre de pàgines14
RevistaIEEE Transactions on Knowledge and Data Engineering
Estat de la publicacióPublicada - 2011
Publicat externament


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