2015

How much does your data exploration overfit? Controlling bias via information usage

Russo, Daniel, Zou, James

Understand

Modern data is messy and high-dimensional, and it is often not clear a priori what are the right questions to ask.

  • Instead, the analyst typically needs to use the data to search for interesting analyses to perform and hypotheses to test.
  • This is an adaptive process, where the choice of analysis to be performed next depends on the results of the previous analyses on the same data.
  • Ultimately, which results are reported can be heavily influenced by the data.

Reading the bibliography…