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Why Multiple Algorithms Exist

If machine learning is about finding patterns in data, why do we need dozens of different algorithms? Why not just use the best one? The answer lies in a fundamental result called the No Free Lunch theorem, combined with the practical reality that different problems have different structures.

The No Free Lunch Theorem

If machine learning is about finding patterns in data, why do we need dozens of different algorithms? Why not just use the best one? The answer lies in a fundamental result called the No Free Lunch theorem, combined with the practical reality that different problems have different structures.