Automatic Text Summarization has received a great deal of attention in the past couple of decades. It has gained a lot of interest especially with the proliferation of the Internet and the new technologies. Arabic as a language still lacks research in the field of Information Retrieval. In this paper, we explore lexical cohesion using lexical chains for an extractive summarization system for Ar...

This paper describes an elementary bilingual information retrieval experiment. The experiment takes Dutch topics to retrieve relevant English documents using Microsoft SQL Server version 7.0. In order to cross the language barrier between query and document, the researchers use query translation by means of a machine-readable dictionary. The Dutch run was void of the typical natural language pr...

Textual Entailment has recently been proposed as an application independent task of recognising whether the meaning of one text may be inferred from another. This is potentially a key task in many NLP applications. In this contribution, we investigate the use of various lexical entailment models in Information Retrieval, using the language modelling framework. We show that lexical entailment po...

This paper describes preliminary work concerning the creation of a Framework to aid in lexical semantic resource construction. The Framework consists of 9 stages during which various lexical resources are collected, studied, and combined into a single combinatory lexical resource. To evaluate the general Framework it was applied to a small set of English and Arabic resources, automatically comb...

Anomic aphasia is a disturbance affecting lexical retrieval. Nonetheless, persons with this disorder may also experience difficulties in the construction of coherent narratives. Whether this symptom is a sign of a macrolinguistic difficulty per se or reflects the lexical disorder is still an open debate. In order to analyze the effect of the lexical impairment on macrolinguistic processing, we ...

Findings in the domain of spoken word recognition have indicated that lexical representations contain both abstract and episodic information. It has been proposed that processing time determines when each source of information is recruited, with increased processing time being required to access lower-frequency episodic instantiations. The time-course hypothesis of specificity effects has thus ...

Lexical-phonetic automata for spoken utterance indexing and retrieval This paper presents a method for indexing spoken utterances which combines lexical and phonetic hypotheses in a hybrid index built from automata. The retrieval is realised by a lexical-phonetic and semi-imperfect matching whose aim is to improve the recall. A feature vector, containing edit distance scores and a confidence me...

We examined the effects of acoustic noise on the relative weightings of different segment types during lexical learning and lexical retrieval. We designed an artificial lexicon consisting of 16 CVCV words, learned as names for blackand-white shapes. For each word (dabo), another word shared the same consonants (dubeI) and a third had the same vowels (gapo). In a 4AFC task, 4 pictures were prese...

Word retrieval deficits for specific grammatical categories, such as verbs versus nouns, occur as a consequence of brain damage. Such deficits are informative about the nature of lexical organization in the human brain. This study examined retrieval of grammatical categories across three languages in a trilingual person with aphasia who spoke Arabic, French, and English. In order to delineate t...

Adult age differences in the neural systems mediating semantic (context-independent) memory were investigated using positron emission tomography (PET). Younger (20-29 years) and older (62-70 years) participants performed lexical decision (word/nonword discrimination) and nonsemantic (simple visual search) baseline tasks during PET scanning. Within the lexical decision task, display duration and...