1
vote
0answers
18 views

How to extract “average polyline” from a set of polylines [duplicate]

EDIT: As pointed, there is already a similar question "buried" inside a larger-scope one. I'll reproduce the relevant part here: If I have multiple recordings of the same routes are there any ...
1
vote
0answers
21 views

Is there any meta-approach for variable selection based of measures of similarity between each two variables?

Is there any meta-approach ( or mayby I should say universal approach which works with different measures ) for variable selection which is based on similarity matrix which every entry ...
-1
votes
1answer
150 views

Random forest like procedure for regression or other statistical models

I'm wondering if there exist methods similar to one used in random forest algorithm - I mean taking simultaneously bootstrap sample and random subset of features, then building statistisal model. Have ...
6
votes
1answer
2k views

What's the forward stagewise regression algorithm?

Maybe it's just that I'm tired, but I'm having trouble trying to understand the Forward Stagewise Regression algorithm. From "Elements of Statistical Learning" page 60: Forward-stagewise ...
2
votes
1answer
347 views

Open source implementation elastic net in C or C++

Can anyone provide or point me to a freely available implemention of Elastic Net in C or C++?
3
votes
1answer
588 views

Text feature vector extraction

I have a class assignment to implement a couple existing ways to extract feature vectors from a given set of texts, so they can be used to classify those texts using k-nearest neighbour algorithm. The ...
8
votes
3answers
2k views

How to apply LASSO to IRLS (logistic regression)?

I have programmed a logistic regression using the IRLS algorithm. I would like to apply a LASSO penalization in order to automatically select the right features. At each iteration, the following is ...