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I wouldn't say its "misleading", it is a correct usage of the word online (especially contrasted with offline learning) and is the name of the sub-area. You won't find many (most?) papers in the area with those search terms unfortunately.

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These so-called "online" techniques do not require being online (as in connected to the internet); they simply require being exposed to a stream of ongoing training data. They learn incrementally. This is why I say the term "online" is misleading.

See: http://en.wikipedia.org/wiki/Online_machine_learning

> Online machine learning is a model of induction that learns one instance at a time.

Online learning existed before the internet, dammit.

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