User Alexey Grigorev - Data Science Stack Exchange

Alexey Grigorev

Member for 8 years, 11 months
Last seen more than 1 year ago

alexeygrigorev.com
Birobidzhan, Russia

24 Answers

Score Activity Newest

125 votes

How to get correlation between two categorical variable and a categorical variable and continuous variable?

answered Aug 4, 2014 at 9:42

36 votes

Accepted

Dimensionality and Manifold

answered May 6, 2015 at 12:56

20 votes

Quick guide into training highly imbalanced data sets

answered Sep 12, 2014 at 20:30

14 votes

Deep learning basics

answered Dec 9, 2014 at 8:26

12 votes

Do Random Forest overfit?

answered Aug 24, 2014 at 8:22

9 votes

Accepted

Analyzing A/B test results which are not normally distributed, using independent t-test

answered Aug 5, 2014 at 8:12

8 votes

Accepted

Difference between tf-idf and tf with Random Forests

answered Sep 18, 2014 at 13:14

5 votes

Accepted

Handling categorical features in Factorization Machines algorithm - Feature Hashing vs. One-Hot encoding

answered Dec 17, 2015 at 9:30

5 votes

Accepted

Implementing Complementary Naive Bayes in python?

answered Jun 21, 2015 at 9:03

4 votes

How to build a textual search engine?

answered Sep 18, 2014 at 19:56

4 votes

Network analysis classic datasets

answered Jun 29, 2014 at 12:48

3 votes

Data Science Project Ideas

answered Jul 26, 2014 at 8:37

2 votes

Handling huge dataset imbalance (2 class values) and appropriate ML algorithm

answered Aug 8, 2014 at 7:12

2 votes

Accepted

Tokenizing words of length 1, what would happen if I do topic modeling?

answered Jan 2, 2016 at 10:15

2 votes

What is an 'old name' of data scientist?

answered Mar 10, 2015 at 9:29

2 votes

Could one algorithm fetch keywords from texts of different natural languages?

answered Jun 4, 2015 at 7:32

2 votes

How are clusters from DBSCAN sometimes non-convex?

answered Jul 5, 2015 at 8:44

2 votes

Accepted

XGBoost in final model what does "yes=3,no=4" mean?

answered Nov 27, 2016 at 16:02

1 vote

Reading Persian Characters in R

answered Jun 19, 2015 at 15:14

1 vote

Creating Domain specific Question Answering Systems

answered Sep 9, 2016 at 6:13

1 vote

When does it makes senses to use Dot-Product as similarity measure instead of Cosine?

answered Nov 12, 2016 at 16:53

1 vote

is there any whatever2vec to generate one vector for one document?

answered Nov 25, 2016 at 6:57

1 vote

Facebook's Huge Database

answered Aug 4, 2014 at 9:48

-1 votes

Best approach for this unsupervised clustering problem with categorical data?

answered Nov 26, 2016 at 20:02