It's actually quite simple: It invokes fit_transform on all elements in a pipeline but the last. On the last element in the pipeline (the estimator) only fit is invoked.
Best, Sebastian > On Feb 26, 2015, at 9:01 PM, Pagliari, Roberto <rpagli...@appcomsci.com> > wrote: > > Given a pipeline with a certain number of transformers and a classifier, how > does sklearn know which method should be invoked from one step to another? > Does it list the available methods for each object? > ------------------------------------------------------------------------------ > Dive into the World of Parallel Programming The Go Parallel Website, sponsored > by Intel and developed in partnership with Slashdot Media, is your hub for all > things parallel software development, from weekly thought leadership blogs to > news, videos, case studies, tutorials and more. Take a look and join the > conversation now. > http://goparallel.sourceforge.net/_______________________________________________ > Scikit-learn-general mailing list > Scikit-learn-general@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/scikit-learn-general ------------------------------------------------------------------------------ Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is your hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more. Take a look and join the conversation now. http://goparallel.sourceforge.net/ _______________________________________________ Scikit-learn-general mailing list Scikit-learn-general@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/scikit-learn-general
