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Machine learning algorithms build a model of the training data. The term "machine learning" is vaguely defined; it includes what is also called statistical learning, reinforcement learning, unsupervised learning, etc. ALWAYS ADD A MORE SPECIFIC TAG.

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How to calculate precision and recall in a 3 x 3 confusion matrix

If you simply want the result, my advice would be to not think too much about and use the tools at your disposal. Here is how you can do it in Python; import pandas as pd from sklearn.metrics import …
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