Questions tagged [supervised-learning]

For questions related to supervised learning.

Supervised learning is a machine learning technique where a function which maps inputs to outputs is learned using a labelled training dataset. A good learned function should be able to generalise to unseen (during the training phase) data.

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Class imbalance and "all zeros" one-hot encoding?

I tried this example for a multi class classifier, but when looking at the data I realized two things: There are many examples of "all zeros" vectors, that is, messages that don't belong in any classification. These all-zeros are actually the…
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