The views integration of 'Similar By Terms' allows to output the calculated similarity in views with a field; in one view i just built, these fields output bizarre similarity values like "1300%", "480%", "400%", "280%" etc. This is quite irritating for users since nobody understands what this is supposed to mean.
I'm no math guru, but I'd guess that a complete match of all terms should be "100%" similarity, if less than all terms match, a value below 100% should be calculated; I can't imagine a valid scenario where "1300%" similarity would make any sense. So maybe there is a flaw somewhere is the code.
Configuration of the Views field: "Show as percentage", "Append % when showing percentage".
Also I tried to switch from "Show as percentage" to "Show count of common terms"; this outputs strange figures as well; e.g. I'm getting the number "65" (count of common terms!) for a node which has just 11 terms (from which only 3 should be evaluated according to the argument's settings).
The site is live and I can point out some links if this would help. This is not a major issue since the calculated nodes by similarity seem to be (more or less) correct, but it is really irritating for users, and it confuses me the more I try to understand it.
Thanks & greetings,
-asb
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
This is still the case in the current 8.x version. Comparing to a second project where SbT delivers quite satisfying results while in my current project we have very nested hierarchical vocabularies, I reckon this might be related to a miscalculation of (counted in) term children.