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Alexey Grigorev's user avatar
Alexey Grigorev's user avatar
Alexey Grigorev's user avatar
Alexey Grigorev
  • Member for 9 years, 11 months
  • Last seen more than 1 year ago
213 votes

How to intuitively explain what a kernel is?

203 votes
Accepted

Understanding ROC curve

79 votes

What does AUC stand for and what is it?

48 votes
Accepted

Difference between Primal, Dual and Kernel Ridge Regression

36 votes

How to calculate Area Under the Curve (AUC), or the c-statistic, by hand

26 votes

Average ROC for repeated 10-fold cross validation with probability estimates

21 votes
Accepted

How well does bootstrapping approximate the sampling distribution of an estimator?

15 votes
Accepted

Automatic keyword extraction: using cosine similarities as features

15 votes

Interpreting QQplot - Is there any rule of thumb to decide for non-normality?

14 votes

How we can draw an ROC curve for decision trees?

14 votes
Accepted

User segmentation by clustering with sparse data

11 votes

How to use decision stump as weak learner in Adaboost?

11 votes

Random Forest - How to handle overfitting

11 votes

Difference between PCA and spectral clustering for a small sample set of Boolean features

9 votes
Accepted

Latent Semantic Indexing and Data Centering

9 votes

How to plot ROC curves in multiclass classification?

9 votes

List of suitable job positions for data analyst

7 votes

Is it possible to use SD instead of entropy?

7 votes

Estimating the best length of n-gram

7 votes

Text Mining: how to cluster texts (e.g. news articles) with artificial intelligence?

7 votes

Matthews correlation coefficient with multi-class

6 votes

Decision tree and missing values

4 votes

Linear Regression Model with Many Features - Real Life Example

4 votes

Is it possible for Cramer's V to be negative?

4 votes
Accepted

Knn classifier for Online learning

4 votes
Accepted

How does machine learning handle the vast number of words in NLP application

4 votes
Accepted

Text mining - Match product title with a description

4 votes

Jaccard index between set and multiset

3 votes
Accepted

Why does my AUC keep decreasing on each fold?

3 votes
Accepted

Cooccurence of Two Categorical Variables