as lentulax suggests--no, demands.
I don't demand anything - people are free to write whatever they like, whether it's meaningful, gibberish, idiomatic or not, etc. I am answering two specific questions in this thread, consistently with the aims of the forum, to offer advice about standard and idiomatic usage of English. In the first example, "Our results confirm previous findings, according to which daughters are more likely to abandon their relationships to fathers than sons",the OP asks whether a proofreader is right to put a comma after 'which'; the answer, unequivocally, is 'No!' The sentence as written conforms to standard English usage; inserting a comma would lead to a misreading by anyone familiar with standard English usage; and I do not believe any native speaker would have difficulty understanding the sentence as written. In fact, I see no ambiguity at all, and I'd be grateful if anyone who does could explain fully the alternative meaning of this whole sentence
(not what part of it might mean in another sentence).
In the second sentence, "we introduce another protocol, the intent locking protocol, according to which
no transaction is allowed to acquire a lock on a tuple before first acquiring a lock-probably an intent lock (see the next paragraph)on the relvar that contains it", no-one has even suggested the possibility of an ambiguity (there is none) ; a comma after 'which' is unequivocally wrong (for the reason I gave; if that's wrong and someone can explain why, I'll retract and apologise for my error). Those who asked the questions are perfectly at liberty to ignore my advice; I don't see any point in giving a tentative opinion, which might mislead those seeking guidance, about something on which I have no doubt.
In cases of similar structures to these two, where a genuine ambiguity might exist (I can't think of any), I still can't see the point of resolving one possible misreading by punctuating in such a way as to cause anyone used to standard English usage to misread in a different way; if such a genuine ambiguity exists, the sentence needs rewriting.