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Definition of overfitting in English:

overfitting

Pronunciation /ˌəʊvəˈfɪtɪŋ/

noun

Statistics

  • The production of an analysis which corresponds too closely or exactly to a particular set of data, and may therefore fail to fit additional data or predict future observations reliably.

Origin

1930s; earliest use found in Quarterly Review of Biology. From over- + fitting.