zpc_gitlink
/
openGauss-server
forked from huawei/openGauss-server
0
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update linregr.cpp

This commit is contained in:
bjyb 2023-09-21 13:07:57 +08:00
parent 5a196e8096
commit 5bc56fc02f
1 changed files with 9 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/gausskernel/dbmind/db4ai/executor/gd/linregr.cpp
View File

@ -21,6 +21,15 @@
* ---------------------------------------------------------------------------------------
*/
/*Linear regression is a regression analysis that uses the least square function called linear
regression equation to model the relationship between one or more independent variables and dependent
variables. Its expression form is y = w'x+e, where e is the normal distribution with the average value of 0.
In regression analysis, only one independent variable and one dependent variable are included, and the
relationship between them can be approximately expressed by a straight line. This regression analysis is
called unary linear regression analysis. If regression analysis includes two or more independent variables,
and there is a linear relationship between dependent variables and independent variables, it is called
multivariate linear regression analysis.*/
#include "db4ai/gd.h"
static void linear_reg_gradients(GradientsConfig *cfg)