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IBM InfoSphere Streams: Accelerating Deployments with Analytic Accelerators by Robert Uleman, Sandra Tucker, John Thorson, Tetsuya Shimada, Norbert Schulz, Roger Rea, Ankit Pasricha, Peter Nicholls, Chris Howard, Kevin Foster, Daniel Farrell, Bharath Devaraju, Oliver Brandt, Chuck Ballard

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Text Analytics, AQL
This book introduces the concept of the three V’s: volume, variety, and velocity. Variety is meant to represent data that is in one of three forms:
Structured data: Like data found to exist in a relational database, generally; a rigid, homogenous, spreadsheet-like, row and column format to data.
Semi-structured data: Like data from software server log files, machine data, HTML pages, data from many types of real-time sensors (heart monitors, weather stations), and related.
Unstructured data: Data from blogs, social media, ...

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