March 2016
Intermediate to advanced
408 pages
12h 50m
Portuguese (Portugal, Brazil)
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CAPÍTULO 10
Representação e Mineração de Texto
Conceitos Fundamentais: A importância de se construir representações de dados de mineração fáceis; Representação de texto para mineração de dados.
Técnicas Exemplares: Representação bag of words; Cálculo TFIDF; N-gramas; Stemização; Extração de entidade nomeada; Modelos de tópicos.
Até este ponto, ignoramos ou deixamos de lado uma etapa importante do processo de mineração de dados: a preparação dos dados. Nem sempre o mundo nos apresenta dados na representação de vetor de característica que a maioria dos métodos de mineração de dados utiliza como entrada. Os dados são representados de maneira natural para problemas a partir dos quais foram derivados. Se quisermos aplicar as muitas ferramentas de ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.