UPDATE: Since I can not answer my own question, here is
the relevant wiki article.
Not exact matches
«The neutrality of this
article is disputed —
Relevant discussion may be found on the talk page — Please do not remove this message until conditions to do so are met,» explains
Wiki when you visit the page.
Wiki has an
article: Kernel density estimation, don't know if it's
relevant (I'm playing a bit out my league here) but one of their examples uses just 6 instances.