In our information era, keywords are very useful to information retrieval, text clustering and so on. News is always a domain attracting a large amount of attention. However, the majority of news articles come without keywords, and indexing them manually costs highly. Aiming at news articles’ characteristics and the resources available, this paper introduces a simple procedure to index keywords...

ReviewsandExclusions Our initial search generated 216 articles. One researcher and a research assistant reviewed the abstracts to exclude easily identifiable errors of three types: duplicate entries, book reviews, and articles using the term “evidence-based” but referring to evidence-based medicine or evidencebased government policy, since these areas were not relevant to our research question....

Abstract This paper applies a new approach to the identification of discourses, based on Multiple Correspondence Analysis (MCA), study discourse variation over time. The MCA keywords deals with major issue use identify discourses: allocation individual multiple discourses. Yet, as this demonstrates, also allows us observe in prevalence discourses texts patterns keyword co-occurrence. Metadata c...

Relations (ABBREVIATE, EXEMPLIFY, ORIGINATE, REL WORK, OPINION) between entities (citations, jargon, people, organizations) are annotated for PubMed scientific articles. We discuss our specifications, pre-processing and evaluation.