Fidelia Ibekwe-Sanjuan

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A multiple-perspective cocitation analysis method is introduced for characterizing and interpreting the structure and dynamics of cocitation clusters. The method facilitates analytic and sense making tasks by integrating network visualization, spectral clustering, automatic cluster labeling, and text summarization. Cocitation networks are decomposed into(More)
Understanding the nature and dynamics of conflicting opinions in texts is a challenging issue concerning sense making and decision making in visual analytics. In this paper we address this issue with a visual analysis of how positive and negative reviews of the controversial bestseller The Da Vinci Code differ. An integrative approach is proposed to capture(More)
We present a novel method for mapping thematic trends called "Classification by Preferential Clustered Link" (CPCL). This method clusters relevant textual units (terms) from a corpus of texts, based on meaningful linguistic relations (syntactic variations) identified amongst the units. Terms related through syntactic variations are represented in the form(More)
This paper presents a three-level structuring of multiword terms (MWTs) basing on lexical inclusion, WordNet similarity and a clustering approach. Term clustering by automatic data analysis methods offers an interesting way of organizing a domain’s knowledge structures, useful for several information-oriented tasks like science and technology watch,(More)
We address here the need to assist users in rapidly accessing the most important or strategic information in the text corpus by identifying sentences carrying specific information. More precisely, we want to identify contribution of authors of scientific papers through a categorization of sentences using rhetorical and lexical cues. We built local grammars(More)
We consider a challenging clustering task: the clustering of multi-word terms without document co-occurrence information in order to form coherent groups of topics. For this task, we developed a methodology taking as input multi-word terms and lexico-syntactic relations between them. Our clustering algorithm, named CPCL is implemented in the TermWatch(More)
Question Answering provides a method of locating precise answers to speci c questions but in technical domains the amount of Multi-Word Terms complicates this task. This paper outlines the Question Answering task in such a domain and explores two ways of detecting relations between MultiWord Terms. The rst targets speci c semantic relations, the second uses(More)
After extracting terms from a corpus of titles and abstracts in English, syntactic variation relations are identified amongst them in order to detect research topics. Three types of syntactic variations were studied : permutation, expansion and substitution. These syntactic variations yield other relations of formal and conceptual nature. Basing on a(More)
We present a methodology combining surface NLP and Machine Learning techniques for ranking asbtracts and generating summaries based on annotated corpora. The corpora were annotated with meta-semantic tags indicating the category of information a sentence is bearing (objective, findings, newthing, hypothesis, conclusion, future work, related work). The(More)