What is Big Data ??
Big data is a representation for data sets that are very large or complex
Big data challenges include analysis, capture, data curation, search, sharing, storage, transfer, visualization, querying, updating and information privacy.
Big data usually includes data sets with sizes beyond the ability of commonly used software tools to capture, curate, manage, and process data within a tolerable elapsed time.
Volume: big data doesn't sample; it just observes and tracks what happens
Velocity: big data is often available in real-time
Variety: big data draws from text, images, audio, video; plus it completes missing pieces through data fusion
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