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Dealing with only categorical features dataset
Quick answer: try CatBoost, and any other tree-based models. Tree-based models can handle categories as-is without any special treatment/encoding, and usually give state-of-the-art result.
If feature ...
1
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Machine Learning on tabular data with spherical coordinates
You may want to look at Directional statistics. The problems that can arise with spherical coordinates are intrinsic as well as coordinate singularities. If your data lives on a sphere, you can try to ...
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