The purpose of this report is to provide an overview of LEXIS-NEXIS’ entries to the TREC-7 competition. The report will describe the experiments we conducted, the results we obtained, and our future research directions. The report is divided into three sections. The first section describes the experimental setup and gives a brief account of some of the research activities that led to the TREC-7...

This paper introduces Boas, a semi-automatic knowledge elicitation system that guides a team of two people through the process of developing the static knowledge sources for a moderate-quality, broad-coverage MT system from any "low-density" language into English in about six months. The paper focuses on some issues in the elicitation of descriptive knowledge in Boas and also the issue of the p...

Cox proportional hazards model is a widely used method to analyse time-to-event data for survival analysis. In the medical field, age is the most common confounder of any association between risk factor and disease since most risk factors and the risk of disease change with age. Usually, age recorded at the start of the study (age-at-baseline) will be adjusted for in the model to account for th...

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This article presents two new approaches for term indexing which are particularly appropriate for languages with a rich lexis and morphology, such as Spanish, and need few resources to be applied. At word level, productive derivational morphology is used to connate semantically related words. At sentence level, an approximate grammar is used to connate syntactic and morphosyntactic variants of ...

Data sources Clinical trials in any language were identified by searching Medline (1966–2001), CINAHL (1982–2001), Doctoral Dissertation Abstracts (1861–2001), International Pharmaceutical Abstracts (1970–2001), EMBASE/Excerpta Medica, Lexis-Nexus, Web of Sciences, and the Cochrane Library; hand searching Index Medicus (1960–65) and scientific meeting programmes and proceedings; reviewing bibli...