出典:Wikipedia
出典:『Wikipedia』 (2011/05/20 21:18 UTC 版)
Data dredging (data fishing, data snooping) is the inappropriate (sometimes deliberately so) use of data mining to uncover misleading relationships in data. Data-snooping bias is a form of statistical bias that arises from this misuse of statistics. Any relationships found might appear to be valid within the test set but they would have no statistical significance in the wider population.