Regression coefficients do not match conditional means
You can download the following data set from this repo.
regression
scikit-learn cross validation, negative values with mean squared error
When I use the following code with Data matrix X of size (952,144) and output vector y of size (952), mean_squared_error metric returns negative values, which is unexpected. Do you have any idea?
fitting data with numpy
Let me start by telling that what I get may not be what I expect and perhaps you can help me here. I have the following data: