Which machine learning classifier to choose, in general? [closed]

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First of all, you need to identify your problem. It depends upon what kind of data you have and what your desired task is.

If you are Predicting Category :

  • You have Labeled Data
    • You need to follow Classification Approach and its algorithms
  • You don’t have Labeled Data
    • You need to go for Clustering Approach

If you are Predicting Quantity :

  • You need to go for Regression Approach

Otherwise

  • You can go for Dimensionality Reduction Approach

There are different algorithms within each approach mentioned above. The choice of a particular algorithm depends upon the size of the dataset.

Source: http://scikit-learn.org/stable/tutorial/machine_learning_map/

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