Zach's user avatar
Zach's user avatar
Zach's user avatar
Zach
  • Member for 13 years, 1 month
  • Last seen more than a month ago
131 votes
Accepted

Obtaining knowledge from a random forest

87 votes

Algorithms for automatic model selection

48 votes
Accepted

Caret and coefficients (glmnet)

46 votes

What is your favorite "data analysis" cartoon?

40 votes
Accepted

Software needed to scrape data from graph

37 votes

Using k-fold cross-validation for time-series model selection

37 votes
Accepted

How to fit an ARIMAX-model with R?

31 votes
Accepted

Detecting significant predictors out of many independent variables

29 votes
Accepted

Optimal construction of day feature in neural networks

26 votes
Accepted

How to compute SVD of a huge sparse matrix?

24 votes

PCA and k-fold cross-validation in caret package in R

24 votes
Accepted

What is the optimal $k$ for the $k$ nearest neighbour classifier on the Iris dataset?

24 votes

Number of features vs. number of observations

23 votes

how to represent geography or zip code in machine learning model or recommender system?

22 votes
Accepted

Timeseries analysis procedure and methods using R

21 votes

What are modern, easily used alternatives to stepwise regression?

20 votes
Accepted

Stacking/ensembling models with caret

20 votes

R vs SAS, why is SAS preferred by private companies?

19 votes

Creating a "certainty score" from the votes in random forests?

17 votes
Accepted

How do I choose what SVM kernels to use?

17 votes
Accepted

How to choose between learning algorithms

17 votes

Fastest SVM implementation

17 votes

Vowpal Wabbit: best strategy for short text data like titles & kewords

16 votes
Accepted

How to determine parameters for t-SNE for reducing dimensions?

16 votes
Accepted

Compendium of cross-validation techniques

15 votes

Graphical data overview (summary) function in R

15 votes

Why downsample?

14 votes

How to check the features which are selected by LASSO

14 votes

Optimized implementations of the Random Forest algorithm

13 votes

R libraries for deep learning

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