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R: Unleash Machine Learning Techniques by Cory Lesmeister, Brett Lantz, Dipanjan Sarkar, Raghav Bali

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Working with online data and services

With the growing amount of data available from web-based sources, it is increasingly important for machine learning projects to be able to access and interact with online services. R is able to read data from online sources natively, with some caveats. Firstly, by default, R cannot access secure websites (those using the https:// rather than the http:// protocol). Secondly, it is important to note that most web pages do not provide data in a form that R can understand. The data would need to be parsed, or broken apart and rebuilt into a structured form, before it can be useful. We'll discuss the workarounds shortly.

However, if neither of these caveats applies (that is, if data are already online on a nonsecure ...

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