Filters all terms contained in the given bag of words (input table)
with chemical named entities tags assigned,
(not) specified in the dialog. The terms are filtered out of the bag of
words and the documents as well if deep preprocessing is checked.
To detect chemical named entities, the OSCAR framework version 4.1.2 is used (see https://bitbucket.org/wwmm/oscar4/overview for details).
A term is kept if at least one of its assigned chemical tags is a valid tag. If strict filtering is set, all assigned chemical tags of a term have to be valid.
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