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Everything about Overfitting

Flaw in mathematical modelling

In mathematical modeling, overfitting is the production of an analysis that corresponds too closely or exactly to a particular set of data and may therefore fail to fit to additional data or predict future observations reliably. An overfitted model is a mathematical model that contains more parameters than can be justified by the data. In the special case of a model that consists of a polynomial function, these parameters represent the degree of a polynomial. The essence of overfitting is to unknowingly extract some of the residual variation as if that variation represents the underlying model structure. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: OverfittingA 5-minute orientation
  2. Skim a recent paper: Avoiding Overfitting: A Survey on Regularization Methods for Convolutional Neural NetworksInfluential work since 2022
  3. Pick up a classic book: Algorithms to Live ByThe most-reprinted book on the subject
  4. Read the landmark paper: The Problem of OverfittingCited 2,321 times
  5. Go sideways: Supervised learningA closely related topic
  6. Go sideways: Bias–variance tradeoffA closely related topic

📖 Definitions

Verb present participle and gerund of overfit

Noun The production of a statistical model that, due to an excess of parameters relative to the sample size, fits the sample data extremely well but fails to fit new data.

🏆 Landmark papers (most cited)

🆕 Influential since 2022

📚 Books worth reading

Ranked by number of editions on Open Library, a rough measure of how lasting a book is.

🔗 Related topics