Filtering Attributes with Weka

Posted by hrzafer on Stack Overflow See other posts from Stack Overflow or by hrzafer
Published on 2010-05-28T07:20:04Z Indexed on 2010/06/07 11:02 UTC
Read the original article Hit count: 307

Filed under:

weka

Hi eveyone!

I have a simple question about filtering attributes in WEKA.

Let's say I have 500 attributes 30 classes and 100 samples for each class which equals 3000 rows and 500 columns. This causes time and memory problems a you can guess.

How do I filter attributes that occur only once or twice (or n times) in 3000 rows. And is it a good idea?

Thank you

Related posts about weka

Export a SQL database into a CSV file and use it with WEKA

as seen on Stack Overflow - Search for 'Stack Overflow'
How can I export a query result from a .sql database into a .csv file? I tried with SELECT * FROM players INTO OUTFILE 'players.csv' FIELDS TERMINATED BY ',' LINES TERMINATED BY ';';` and my .csv file is something like: p1,1,2,3 p2,1,4,5 But they are not in saparated columns, all… >>> More
Image classification using openCV and weka

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi i want to do image classification, so i am planning to use openCV for the preprocessing of image and weka to check which ML algorithm gives best result, so the problem i am facing is converting the image data in to weka ARFF file format, when i apply some image transformation to image and write… >>> More
How to interpret weka classification?

as seen on Stack Overflow - Search for 'Stack Overflow'
How can we interpret the classification result in weka using naive bayes? How is mean, std deviation, weight sum and precision calculated? How is kappa statistic, mean absolute error, root mean squared error etc calculated? What is the interpretation of the confusion matrix? >>> More
Visualize Classifier Error Weka

as seen on Stack Overflow - Search for 'Stack Overflow'
Hye there i have a have datasets where this data i have test it on weka with J48 classifier It give me an output = 87.2611% Total of instances = 157 Correctly Instances = 137 Incorrectly instance = 20 Then i have do a visualize classifier error on my data. However my result have been decrease to:… >>> More
Filtering Attributes with Weka

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi eveyone! I have a simple question about filtering attributes in WEKA. Let's say I have 500 attributes 30 classes and 100 samples for each class which equals 3000 rows and 500 columns. This causes time and memory problems a you can guess. How do I filter attributes that occur only once or twice… >>> More

Developer IT

Filtering Attributes with Weka - Developer IT

Filtering Attributes with Weka

weka

Related posts about weka

Export a SQL database into a CSV file and use it with WEKA

Image classification using openCV and weka

How to interpret weka classification?

Visualize Classifier Error Weka

Filtering Attributes with Weka

Categories cloud