Top "Weka" questions

Weka (Waikato Environment for Knowledge Analysis) is an open source machine learning library written in Java.

Sentiment analysis with NLTK python for sentences using sample data or webservice?

I am embarking upon a NLP project for sentiment analysis. I have successfully installed NLTK for python (seems like a …

nlp nltk weka classification
NetBeans - How to import a class from an external library

I have a Java project in Netbeans and I want to use some classes from Weka within my project. I …

java netbeans netbeans6.7 weka
Basic text classification with Weka in Java

Im trying to build a text classifier in JAVA with Weka. I have read some tutorials, and I´m trying …

java classification weka document-classification
Train and test set are not compatible error in weka?

I'm trying to test my model with new dataset. I have done the same preprocessing step as i have done …

machine-learning weka arff
ERROR While using WEKA API in java code: Class Attribute Not Set?

I'm trying to use weka API in my java code. I use J48 tree classification to Classify my dataset in …

java api classification weka
Java, Weka: How to predict numeric attribute?

I was trying to use NaiveBayesUpdateable classifier from Weka. My data contains both nominal and numeric attributes: @relation cars @attribute …

java weka numeric predict
Error in plot, formula missing

I am trying to plot my svm model. library(foreign) library(e1071) x <- read.arff("contact-lenses.arff") #alt: …

r weka svm
How to add LibSVM class to WEKA classpath on a Mac

I am running Max OS X 10.7 Lion and I want to use WEKA with LibSVM from command line. I get …

java macos weka
Learning Weka on the Command Line

I am fairly new to Weka and even more new to Weka on the command line. I find documentation is …

machine-learning classification weka
what is f-measure for each class in weka

When we evaluate a classifier in WEKA, for example a 2-class classifier, it gives us 3 f-measures: f-measure for class 1, for …

machine-learning weka evaluation