Uma análise comparativa entre as abordagens linguística e estatística para extração automática de termos relevantes de corpora

• Autor(a) principal: Santos, Carlos Alberto dos
• Data de Publicação: 2018
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Biblioteca Digital de Teses e Dissertações da PUC_RS
• Texto Completo: http://tede2.pucrs.br/tede2/handle/tede/8233
• topic: Eextração de Termos; Mineração de Texto; Lista de Referência; Métricas Estatísticas; Extração Linguística; Extração Estatística; Stop List; Term Extraction; Text Mining; Reference List; Stop List; Statistical Metrics; Linguistic Extraction; Statistical Extraction; CIENCIA DA COMPUTACAO::TEORIA DA COMPUTACAO

It is known that linguistic processing of corpora demands high computational effort because of the complexity of its algorithms, but despite this, the results reached are better than that generated by the statistical processing, where the computational demand is lower. This dissertation describes a comparative analysis between the process linguistic and statistical of term extraction. Experiments were carried out through four corpora in English idiom, built from scientific papers, on which terms extractions were carried out using the approaches. The resulting terms lists were refined with use of relevance metrics and stop list, and then compared with the reference lists of the corpora across the recall technical. These lists, in its turn, were built from the context these corpora, whith help of Internet searches. The results shown that the statistical extraction combined with the stop list and relevance metrics can produce superior results to linguistic process extraction using the same metrics. It’s concluded that statistical approach composed by these metrics can be ideal option to relevance terms extraction, by requiring few computational resources and by to show superior results that found in the linguistic processing.