Questions tagged [machine]

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How to improve results from ML model? (spam classification)

I am trying to build a model that predicts if an email is spam/not-spam. After building a logistic regression model, I have got the following results: ...
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1answer
28 views

Unable to successfully merge dataframes in pandas along labels

I have two different dataframes, they both share the same labels, "Country" and "Year", I am trying to merge these together as one by these two columns. This is my code: joined = ...
1
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0answers
8 views

response variable at the group level, independent variables at the entity level

I have a dataset of entities which each belong to a particular group (i.e. entity=schools and group=school district). I also have lots of auxiliary variables on each entity. However, for my response ...
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42 views

How to understand the definition of Greedy Target-based Statistics in the CatBoost paper

There is a method named Target statistics to deal with categorical features in the catboost paper. I still some confusion about the mathematical form. Could you some guys to expain how to compute it! $...