From 72b4edeadeafc9c54b3db9b0961a45da3d07b77c Mon Sep 17 00:00:00 2001 From: leshe4ka46 Date: Tue, 9 Dec 2025 11:42:25 +0300 Subject: ar, tree --- R_AR/aaaaaaa.md | 14 ++++++++++++++ 1 file changed, 14 insertions(+) create mode 100644 R_AR/aaaaaaa.md (limited to 'R_AR/aaaaaaa.md') diff --git a/R_AR/aaaaaaa.md b/R_AR/aaaaaaa.md new file mode 100644 index 0000000..6e84df7 --- /dev/null +++ b/R_AR/aaaaaaa.md @@ -0,0 +1,14 @@ +support = count(x)/count(total) + +confidence - если х, то скорей всего y = supp(x + y)/supp(x) + +lift - насколько зависят друг от друга = supp(x+y)/(supp(x) supp(y)) +1 независимы + +lift(a, b) = 1.25 -> +25% мощнее правила, что a просто покупают + +https://habr.com/ru/companies/ods/articles/353502/ + + + +откидываем нечастые -- cgit v1.2.3