Question

what are the methods of classification of changes

Answer 1

Physical and Chemical Changes. We see ice melting into water, water boiling to vapours and vapours precipitating into the water droplets oncooling. These are some of the examples of Physical Changes since the transition is in the Physical Properties of Water. Substances in Nature undergo various types of changes.



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Answer 2

There are many techniques for solving classification problems: classification trees, logistic regression, discriminant analysis, neural networks, boosted trees, random forests, deep learning methods, nearest neighbors, support vector machines, etc, (e.g. see the R package “e1071” for more example methods).