Top "Classification" questions

In machine learning and statistics, classification is the problem of identifying which of a set of categories a new observation belongs to, on the basis of a training set of data containing observations whose category membership (label) is known.

adding words to stop_words list in TfidfVectorizer in sklearn

I want to add a few more words to stop_words in TfidfVectorizer. I followed the solution in Adding words …

python scikit-learn classification stop-words text-classification
How to use weka for predict results

Im new to weka and I'm confused with the tool. What I needed to do is im having a data …

dataset data-mining classification weka prediction
How to Interpret Predict Result of SVM in R?

I'm new to R and I'm using the e1071 package for SVM classification in R. I used the following code: …

r classification svm
Options for deploying R models in production

There doesn't seem to be too many options for deploying predictive models in production which is surprising given the explosion …

r deployment machine-learning classification pmml
Precision/recall for multiclass-multilabel classification

I'm wondering how to calculate precision and recall measures for multiclass multilabel classification, i.e. classification where there are more …

machine-learning classification multilabel-classification precision-recall
Data Prediction using Decision Tree of rpart

I am using R to classify a data-frame called 'd' containing data structured like below: The data has 576666 rows and …

r machine-learning classification decision-tree rpart
Multilabel-indicator is not supported for confusion matrix

multilabel-indicator is not supported is the error message I get, when trying to run: confusion_matrix(y_test, predictions) y_…

python numpy scikit-learn classification
Lucene: exception - Query parser encountered <EOF> after "some word"

I am working on a classification problem to classify product reviews as positive, negative or neutral as per the training …

java lucene classification query-parser
Change maven dependency for artifact using classifier

With the maven jar plugin I build two jar: bar-1.0.0.jar and bar-1.0.0-client.jar. Actually in my POM I …

maven-2 maven-plugin dependency-management classification maven-jar-plugin
How to approach machine learning problems with high dimensional input space?

How should I approach a situtation when I try to apply some ML algorithm (classification, to be more specific, SVM …

machine-learning classification svm