negative distance between categories?

[Andrea Apicella]

is it possible that I obtain a negative value of distance?
e.g.

Category:Art rock musical groups   Category:Houses completed in 1800 SRMetric sr = configurator.get(SRMetric.class, "category","language", en.getLangCode()); I obtain a value of -0.0029.. is it plausible?

[Shilad Sen]

Apparently so :(

The category SR metric uses percentile normalization, so if it sees an unusually distant paper (e.g. one that must traverse the upper-most nodes in the category tree), it may get confused. I think it's safe to truncate at 0.000 for a lower bound. The percentile normalizer should probably do this by default. Would you mind opening an issue for it? I'll try to fix it in the next release.

-Shilad

[Andrea Apicella]

ok! I'm going to open it!