April 2015
Beginner
258 pages
5h 48m
English
Content preview from Python Data Science EssentialsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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A peek into Natural Language Processing (NLP)
This section is not strictly related to machine learning, but it contains some machine learning results in the area of Natural Language Processing. Python has many toolkits to process text data, but the most powerful and complete toolkit is NLTK, the Natural Language Tool Kit.
In the following sections, we'll explore its core functionalities. We will work on the English language; for other languages, you will first need to download the language corpora (note that sometimes, languages have no free open source corpora for NLTK).
Word tokenization
Tokenization is the action of splitting the text in words. Chunking the whitespace seems very easy, but it's not, because text contains punctuation and contractions. ...
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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.