Tagged Questions
1
vote
1answer
28 views
Categorical value “stuck” during sampling of my model
I'm having some troubles with the implementation in pyMC of my probabilistic model.
Note: you can skip directly to the code section, if you're not interested on the use of the model.
The model ...
1
vote
1answer
36 views
Generating rules to obtain a given categorical distribution… is it possible?
I'm working on a problem, I was wondering if there are any methods available to do the following.
I have a data set with information on people (continuous and categorical data). I have 3 categories ...
4
votes
1answer
218 views
Categorial features in linear machine learning algorithms
How can I deal with categorial features inside linear ML algorithms? The obvious solution is to represent each value as a binary feature. For example, if the categorical feature color has three ...
3
votes
1answer
217 views
Normalization of categorical factor variables
For supervised machine learning for prediction, if I had some feature variables that are real, and also some features that are categorical--which have been coded using dummy variables (010, 001 ...
12
votes
3answers
182 views
Is building a multiclass classifier better than several binary ones?
I need to classify URLs into categories. Say I have 15 categories that I'm planning to zero down every URL to.
Is a 15-way classifier better? Where I have 15 labels and generate features for each ...
2
votes
1answer
278 views
What machine learning algorithms are used for internet advertising?
I.e. based on stats of site visiting, clicks, classifying visitors based on what they are interested in, time, day of week etc.
Any frameworks/resources you can recommend?
For example: we have a lot ...
3
votes
0answers
58 views
Graphical nominal model
Suppose I have a set of $k$ matrices.
$$
\epsilon = A_1,A_2,...,A_k
$$
Each column of $A$ is categorical vector.
$$
A = v_1,v_2,...,v_n
$$
I want to find the mapping
$$
f: A ...
0
votes
1answer
218 views
Is there a corpus specifically for categories like sports, entertainment, or health?
I am experimenting with Classification algorithms in ML and am looking for some corpus to train my model to distinguish among the different text categories like sports, weather, technology, football, ...
