Underfitted — Generalized — Overfitted

Underfitted Generalized Overfitted, A brief note on how bias and variance makes a model as Underfitted or Generalized or Overfitted

A brief note on how bias and variance makes a model as Underfitted or Generalized or Overfitted!

In this post, instead of writing so many paragraphs I just made an info-graphic for ease of understanding.

Underfitting
Image by Author

Underfitted:

A model could fit the training and testing data very poorly (high bias and low variance) — left most graph in above Info-graphic. This is known as underfitted.

Overfitted:

A modelcan fit the training data very well and the testing data very poorly. (low bias and high variance) — Right most graph in above Info-graphic. This is known as overfitted.

Generalized:

An ideal model should be low in Bias and also low in Variance.

Conclusion:

This post is a very small one because I do not want readers to confuse more.

Please leave your comments if you have any other idea on Bias-Variance, Overfitting & Underfitting.

If you want to dig more into Bias — Variance please read my previous blog Overfitting — Bias — Variance — Regularization.

Happy Programming!

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Asha Ponraj

Data science and Machine Learning enthusiast | Software Developer | Blog Writter

Articles: 84

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