Rodrigo Alarcón

Identification of Recurrent Patterns to Extract Definitory Contexts

In order to develop an engine to extract likely definitory contexts in specialised corpus, we describe the acquisition and classification of an inventory of recurrent patterns on Disasters texts.

ECODE: A Definition Extraction System

Terminological work aims to identify knowledge about terms in specialised texts in order to compile dictionaries, glossaries or ontologies. Searching for definitions about the terms that terminographers intend to define is therefore an essential task. This search can be done in specialised corpus, where they usually appear in definitional contexts, i.e. text fragments where an author explicitly defines a term. We present a research focused on the automatic extraction of those definitional contexts. The methodology includes three different processes: the extraction of definitional patterns, the automatic filtering of non-relevant contexts, and the automatic identification of constitutive elements, i.e., terms and definitions.

Web Exploitation for Definition Extraction

We present a system to extract definitions from a term using the Web. Definitions are organized according to a typology and its context. The structural and functional design is described; emphasizing its relevant components: the extractor of definitional context to candidates using the Yahoo!’s BOSS API; the extractor of definitional contexts and a clustering module based on textual energy as a measure of similarity.