14,368 reputation
63785
bio website mbq.me
location Warsaw, Poland
age 28
visits member for 4 years, 5 months
seen 4 hours ago


Dec
2
awarded  Good Question
Nov
29
comment fragmentation problem in decision tree
Note that decision tree and decision tree ensembles are two different worlds -- fragmentation (basically noise in the near-leaf branches) in ensemble should average out. Single decision tree is mostly about making interpretable and meaningful model, not necessarily perfectly accurate.
Nov
21
awarded  Nice Answer
Nov
16
revised Selecting kernel or binary similarity measures
edited body; edited title
Nov
16
revised Identifiability and estimability
edited body; edited title
Nov
16
revised Classification algorithms that return confidence?
edited title
Nov
16
comment Test accuracy higher than training. How to interpret?
From definition, ML methods are about performance on unseen data, thus they give no guarantees about this result (the model is not expected to re-implement the mechanism underlying the data like in statistical modelling). In practice many methods give overly accurate predictions, thus it is only deceiving.
Nov
14
awarded  Good Answer
Nov
12
revised A priori decision for a linear vs RBF Kernel SVM
edited title
Nov
12
answered Better in ROC AUC vs. better in PR AUC
Nov
12
revised Better in ROC AUC vs. better in PR AUC
edited title
Nov
10
comment How to perform genetic-algorithm variable selection in R for SVM input variables?
@DikranMarsupial Well, I can only invite you to try pre-filtering them with some of my timber tools (;
Nov
9
revised Validating clustering results with labeled data
edited title
Nov
7
awarded  Nice Answer
Oct
23
revised Bootstrapping a bootstrap
There is no need to sign your posts, system attaches your profile excerpt automatically.
Oct
20
revised Covariance of a compound distribution
edited title
Oct
15
awarded  Nice Answer
Oct
14
awarded  Revival
Oct
6
revised Correlation space as preprocess to hierarchical clustering
edited title
Sep
30
awarded  Explainer