PROV: metrics before and after change -- these are the same values?
PROV plugin calculates some metrics before and after page change (to see what difference was made by the change). I reviewed some values in the PROV files and it seems that values before and after change are the same!
Two options:
- I looked only at changes that do not affect semantics (metrics are calculated based on semantics) and everything is ok;
- metrics before or metrics after are not calculated properly -- which ones and how to fix it?
Needs some investigation.
Edit 11.08.2017: Also, there is no need to calculate the metrics twice for each change. They could be calculated once (in some "critical section" if it is possible on the PHP level), then saved somewhere and compared to the previously saved values.