Big Data Computing

28 Big Data Computing

also judgments, assessments, attitudes, and sentiments about the same data

or knowledge token may well differ in different contexts. When it goes about

data, it might be useful to know:

1. The “context of origin”—the information about the source; who orga-

nized and performed the action; what were the objects; what features

have been measured; what were the reasons or motives for collecting

these data (transparent or hidden); when and where the data were

collected; who were the owners; what were the license, price, etc.

2. The “context of processing”—formats, encryption keys, used prepro-

cessing tools, predicted performance of various data mining algo-

rithms, etc.; and

3. The “context of use”—potential domains, potent ...