Gartner: “Big data is high volume, high velocity, and/or high variety information assets that require new forms of processing to enable enhanced decision making, insight discovery and process optimization.(Gartner:大数据是大量、高速、和/或高多样性的信息资产。他们需要新的处理方法，以便强化决策支持、探索发现和过程优化。)
Characteristics(特点)
1.Volume（大量）
2.Variety(多样性)
3.Velocity(高速)
4.Variability(可变性)
5.Veracity(精准性)
6.Complexity(复杂性) chinc
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