thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-24 08:32:02 +00:00
Code Issues Packages Projects Releases Wiki Activity
d1fdc311be
ClickHouse/docs/en/sql-reference/aggregate-functions/reference/categoricalinformationvalue.md
Ivan Blinkov 7170f3c534
[docs] split aggregate function and system table references (#11742) 
* prefer relative links from root

* wip

* split aggregate function reference

* split system tables
2020-06-18 11:24:31 +03:00

425 B
Raw Blame History

toc_priority
250

categoricalInformationValue

Calculates the value of (P(tag = 1) - P(tag = 0))(log(P(tag = 1)) - log(P(tag = 0))) for each category.

categoricalInformationValue(category1, category2, ..., tag)

The result indicates how a discrete (categorical) feature [category1, category2, ...] contribute to a learning model which predicting the value of tag.