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rapaio

Iasi, Romania

http://rapaio.blogspot.com

statistics, data mining and ML greenhorn. experienced software engineer
https://github.com/padreati/rapaio

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Top Questions
Top Answers
75
strings as features in decision tree/random forest
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51
Why doesn't Random Forest handle missing values in predictors?
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39
How do decision tree learning algorithms deal with missing values (under the hood)
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29
Question about standardizing in ridge regression
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22
Do you have to normalize data when building decision trees using R?
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22
What does the alpha and beta hyperparameters contribute to in Latent Dirichlet allocation?
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20
Why is AUC higher for a classifier that is less accurate than for one that is more accurate?
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19
Gini decrease and Gini impurity of children nodes
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18
R's randomForest can not handle more than 32 levels. What is workaround?
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18
Python vs R for machine learning
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17
Will decision trees perform splitting of nodes by converting categorical values to numerical in practice?
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16
How we can draw an ROC curve for decision trees?
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16
Is GLM a statistical or machine learning model?
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15
what is the difference between "fully developed decision trees" and "shallow decision trees"?
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15
Where in the workflow should we deal with missing data?
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14
Why we use log function for cross entropy?
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14
What is the problem with post-hoc testing?
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12
Hypothesis testing. Why center the sampling distribution on H0?
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11
My data is highly overlapping, but when I apply logistic regression, it is giving an impressive accuracy of 79%. Why?
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11
Why the p-value of t.test() is not statistically significant when mean values look really different
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11
Variation or variance
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10
Why use bootstrapping?
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10
When should I use each of these methods to calculate correlation?
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10
Is it reasonable for a classifier to obtain a high AUC and a low MCC? Or the opposite?
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10
k-means|| a.k.a. Scalable K-Means++
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10
Algorithm for generating classification rules
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10
What is the most efficient data indexing technique
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10
The data in our relational DBMS is getting big, is it the time to move to NoSQL?
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9
What is this tactic called?
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9
Is information lost when converting an image to a single vector for analysis?
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