Help with linearRegression/cross_val_score - Printable Version +- Python Forum (https://python-forum.io) +-- Forum: Python Coding (https://python-forum.io/forum-7.html) +--- Forum: Data Science (https://python-forum.io/forum-44.html) +--- Thread: Help with linearRegression/cross_val_score (/thread-33679.html) Help with linearRegression/cross_val_score - vasu2798 - May-16-2021 Hi. I'm trying to find the cross validation score using Linear regression model but am getting scores more than 1. I have attached the data, code as well as the output. Kindly help if possible. Thanks :) [attachment=1061] RE: Help with linearRegression/cross_val_score - Larz60+ - May-17-2021 Please show what you have tried (code) so far. RE: Help with linearRegression/cross_val_score - vasu2798 - May-17-2021 (May-17-2021, 03:48 PM)Larz60+ Wrote: Please show what you have tried (code) so far. Hi!Please find the code below. A big Thanks for your time! :) import pandas as pd data=pd.read_csv(r'C:\Users\Personal\Desktop\Sample.csv',nrows=30) data from sklearn.linear_model import LinearRegression from sklearn.model_selection import cross_val_score import numpy as np lr=LinearRegression() x,y=data.iloc[:,0:2],data.iloc[:,[2]] lr=LinearRegression() cross_val_score(lr, x, y,cv=5) RE: Help with linearRegression/cross_val_score - Caprone - May-20-2021 (May-16-2021, 02:45 PM)vasu2798 Wrote: Hi. I'm trying to find the cross validation score using Linear regression model but am getting scores more than 1. I have attached the data, code as well as the output. Kindly help if possible. Thanks :) sorry, but have You understood what cv does ??? how many scores You thought 5 folds cv would returns?? RE: Help with linearRegression/cross_val_score - vasu2798 - May-20-2021 (May-20-2021, 08:08 PM)Caprone Wrote: (May-16-2021, 02:45 PM)vasu2798 Wrote: Hi. I'm trying to find the cross validation score using Linear regression model but am getting scores more than 1. I have attached the data, code as well as the output. Kindly help if possible. Thanks :) sorry, but have You understood what cv does ??? how many scores You thought 5 folds cv would returns?? Hey Sorry. I guess I didn't frame my question right. I'm getting cv score values more than 1. I thought they would be in the range between 0.0 to 1.0 RE: Help with linearRegression/cross_val_score - Caprone - May-21-2021 (May-20-2021, 08:24 PM)vasu2798 Wrote: (May-20-2021, 08:08 PM)Caprone Wrote: sorry, but have You understood what cv does ??? how many scores You thought 5 folds cv would returns?? Hey Sorry. I guess I didn't frame my question right. I'm getting cv score values more than 1. I thought they would be in the range between 0.0 to 1.0 ok if your metric is R2 than a score greater than 1 does not make sense; this may be because your data sample is very small, then variance can be very high; try to post a reproducible code with representative data