What is the meaning of jitter in visualize tab of weka
In weka I load an arff file. I can view the relationship between attributes using the visualize tab. However I can't understand the meaning of the jitter slider. What is its purpose? ...
arff
writing a fast parser in python
I've written a hands-on recursive pure python parser for a some file format (ARFF) we use in one lecture. Now running my exercise submission is awfully slow. Turns out by far the most time is spent in my parser. It's consuming a lot of CPU time, the HD is not the bottleneck. I wonder what performant ways are there to write a parser in p...
arff FileReader class in C
Hi guys, need your help. I actually don't know how to extract dates from a arff-file. arff-file: @ATTRIBUTE a1 NUMERIC @ATTRIBUTE a2 NUMERIC @ATTRIBUTE a3 {a,b,c,d,e} @DATA 12.5,1,b 3.7,2,a 3.5,1,c ... do C have BufferedReader and InputStreams? Thanks a lot! ...
Reusing Weka Code to Parse ARFF Files
Has anyone done this? Is there any documentation on how to use this parser module? I've looked through the code but it's not clear to me to how to actually use the data after it's been parsed. The file src\main\java\weka\core\converters\ArffLoader.java (which I assume is where the Arff parsing happens) has these instructions: Typica...
Using Weka Java Code - How Convert CSV (without header row) to ARFF Format?
I'm using the Weka Java library to read in a CSV file and convert it to an ARFF file. The problem is that the CSV file doesn't have a header row, only data. How do I assign attribute names after I bring in the CSV file? (all the columns would be string data types) Here is the code I have so far: CSVLoader loader = new CSVLoader(...