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Ray Yang's user avatar
Ray Yang's user avatar
Ray Yang's user avatar
Ray Yang
  • Member for 6 years, 3 months
  • Last seen more than 2 years ago
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question
3
t test of individual coefficient and wald test of euqality of two coefficients
Sep 19, 2018
question
2
Do we keep the instrument in the OLS, if Wu-Hausman test (using that instrument) fails to reject that OLS is consistent?
Sep 12, 2018
answer
2
How is it possible to obtain a good linear regression model when there is no substantial correlation between the output and the predictors?
Sep 13, 2018
answer
2
Should predictive tasks always be regression instead of classification?
Sep 13, 2018
answer
2
Is using both training and test sets for hyperparameter tuning overfitting?
Sep 14, 2018
question
1
How to engineer binary vectors (representing store layout) into new variables (for predicting store sales)?
Sep 13, 2018
question
1
How to quantify the patterns of multivariate distribution (e.g. clustered in the center vs. spread out all over the place)?
Oct 1, 2018
answer
1
Which technique for this regression problem?
Sep 14, 2018
answer
1
Penalized multinomial regression with missing values
Mar 14, 2019
answer
0
In what instances do we need to worry about Heckman correction for selection bias?
Sep 13, 2018