This paper presents systems for syntactic chunking and clause identification for Basque, combining rule-based grammars with machine-learning techniques. Precisely, we used Filtering-Ranking with Perceptrons (Carreras, Màrquez and Castro, 2005): a learning model that recognizes partial syntactic structures in sentences, obtaining state-of-the-art performance for these tasks in English. This mode...

The performance of major search engines for Basque is far from satisfactory, partly due to the agglutinative nature of the language –it is commonly known that search engines do not perform well with such languages– and partly because it is not a language to which search engines restrict their results. In this paper we present EusBila, a search service for Basque that relies on the APIs of searc...

This paper explores a crosslingual approach to the PP attachment problem. We built a large dependency database for English based on an automatic parse of the BNC, and Reuters (sports and finances sections). The Basque attachment decisions are taken based on the occurrence frequency of the translations of the Basque (verb-noun) pairs in the English syntactic database. The results show that with ...

Rational choice perspectives maintain that seemingly irrational behavior on the part of terrorist organizations may nevertheless reflect strategic planning. In this paper we examine spatial and temporal patterns of terrorist attacks by the Spanish group ETA between 1970 and 2007. Our analysis is guided by a public announcement by ETA in 1978 that the group would shift from emphasizing attacks i...

In these Notes we make a self-contained presentation of the theory that has been developed recently for the numerical analysis of the controllability properties of wave propagation phenomena and, in particular, for the constant coefficient wave equation. We develop the so-called discrete approach. In other words, we analyze to which extent the semidiscrete or fully discrete dynamics arising whe...

The application of the formalism of two-level morphology to Basque and its use in the e laborat ion of the X U X E N s p e l l i n g checker/corrector are described. This application is intended to cover a large part of the language. Because Basque is a highly inflected language, the approach of spelling checking and correction has been conceived as a by-product of a general purpose morphologic...

OBJECTIVES [corrected] Underreporting of work-related cancer in the Basque Country (Spain) is massive. The aim of our study is to estimate the job-related cancer in the Basque Country in 2008 treated by the Basque Public Health System-Osakidetza, as well as the medical costs derived from its treatment in the same year. METHODS Scientific evidence from industrialised countries is used to estim...