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dupeguru/help/en/developer/core/engine.rst
2013-08-20 22:52:43 -04:00

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core.engine
===========
.. automodule:: core.engine
.. autoclass:: Match
.. autoclass:: Group
:members:
.. autofunction:: build_word_dict
.. autofunction:: compare
.. autofunction:: compare_fields
.. autofunction:: getmatches
.. autofunction:: getmatches_by_contents
.. autofunction:: get_groups
.. autofunction:: merge_similar_words
.. autofunction:: reduce_common_words
.. _fields:
Fields
------
Fields are groups of words which each represent a significant part of the whole name. This concept
is sifnificant in music file names, where we often have names like "My Artist - a very long title
with many many words".
This title has 10 words. If you run as scan with a bit of tolerance, let's say 90%, you'll be able
to find a dupe that has only one "many" in the song title. However, you would also get false
duplicates from a title like "My Giraffe - a very long title with many many words", which is of
course a very different song and it doesn't make sense to match them.
When matching by fields, each field (separated by "-") is considered as a separate string to match
independently. After all fields are matched, the lowest result is kept. In the "Giraffe" example we
gave, the result would be 50% instead of 90% in normal mode.