Junio C Hamano 1706306a54 diffcore-rename: similarity estimator fix. ...

The "similarity" logic was giving added material way too much
negative weight.  What we wanted to see was how similar the
post-change image was compared to the pre-change image, so the
natural definition of similarity is how much common things are
there, relative to the post-change image's size.

This simplifies things a lot.

Signed-off-by: Junio C Hamano <junkio@cox.net>

2006-03-02 22:12:33 -08:00

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