几种偏差
2022-02-12 本文已影响0人
来到了没有知识的荒原
推荐系统中的：
position bias：
推荐系统中，item在靠前的，更有几率被点击
selection bias：
(wiki: ) Selection bias is the bias introduced by the selection of individuals, groups, or data for analysis in such a way that proper randomization is not achieved, thereby failing to ensure that the sample obtained is representative of the population intended to be analyzed.
例子：统计地铁上人的购票率
