September 2015
Beginner to intermediate
608 pages
13h 43m
English
Content preview from Clojure for Data ScienceBecome 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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Extracting the data
After you run the preceding script, the articles will be unzipped to the directory data/reuters-sgml. Each .sgm file in the extract contains around 1,000 short articles that have been wrapped in XML-style tags using Standard Generalized Markup Language (SGML). Rather than write our own parser for the format, we can make use of the one already written in the Lucene text indexer.
(:import [org.apache.lucene.benchmark.utils ExtractReuters])
(defn sgml->txt [in-path out-path]
(let [in-file (clojure.java.io/file in-path)
out-file (clojure.java.io/file out-path)]
(.extract (ExtractReuters. in-file out-file))))Here we're making use of Clojure's Java interop to simply call the extract method on Lucene's ExtractReuters class. Each article ...
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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.