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This tag describes the process of creating a statistical or machine learning model. Always add a more specific tag.

8 votes
2 answers
3k views

Analysing the residuals themselves

As far as I know, it is possible to fit a linear regression model and then fit a second model to predict the residuals from the first model by using some other variables. By this you can understand th …
Tim's user avatar
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293 votes
3 answers
34k views

How to know that your machine learning problem is hopeless?

Imagine a standard machine-learning scenario: You are confronted with a large multivariate dataset and you have a pretty blurry understanding of it. What you need to do is to make predictions …
Tim's user avatar
  • 141k