What is different between information extraction and information retrieval?

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Amine Baina

I think the second is about fetching the data in which the wanted information exists, the first is about extracting the information from this data.

ASIM ULLAH JAN

thanks but no satisfactory answer...Amine Baina

Sireesha Jasti

In opinion mining we concentrate on IE not on IR. Main difference between these two approaches is that for the purpose of information extraction relevant facts of interest are specified in advance, while information retrieval tries to discover documents that may have facts of interest for the user that the user is not aware of.