课程: Complete Guide to NLP with R

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课程: Complete Guide to NLP with R

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- The authors of tm knew there were more document formats than they could possibly support. As an answer to this problem, they provided a way for developers to create their own sources and add them to tm as plug-in packages. In this lesson, let's take a look at some of these additional sources for document import. None of these additional sources can be used with simple corpus. Instead, they all use V Corpus, E Corpus or others. And let's take a look at these additional sources. Mbox Source provides a way to directly read mailboxes in Mbox format. It's added by installing tm.plugin.mail. This plugin also adds several functions for cleaning mail messages. AlcesteSource is added by installing tm.plugin.alceste and provides support for the Alceste format. EuropresseSource is added by installing tm.plugin.europresse and reads documents coming from Europresse. LexusNexusSource is added by installing…

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