Getting started with weka Loading Instances Text Classification How to use R in Weka How to use CPython Scripting in Weka?Simple Comparison of Weka Interfaces Getting Started With Jython in Weka Mistakes easily made when using KnowledgeFlow

Mistakes easily made when using KnowledgeFlow

Remarks:

TrainingSetMaker and TestSetMaker

a ClassAssigner must be linked between ArffLoader and TrainingSetMaker or TestSetMaker.

ArffSaver

In order to save dataset into arff file successfully, it is safer to set relationNameForFilename to False inside configuration of ArffSaver.

How to use TimeSeriesForecasting in KnowledgeFlow?

Open knowledgeFlow, load dataset with ArffLoader
go to setting, check time series forecasting perspective, right-click ArffLoader to send to all perspective
go to time series forecasting perspective to set up a model
run the model and copy the model to clipboard
ctrl + v, and click to paste model to Data mining process canvas
save prediction along with original data with ArffSaver

How to open KnowledgeFlow file directly from terminal

add the following function into .bash_profile, save and exit

function wekaflstart() {
export R_HOME=/Library/Frameworks/R.framework/Resources
java -Xss10M -Xmx4096M -cp :weka.jar weka.gui.knowledgeflow.KnowledgeFlow "$1"
}

inside a directory with a weka.jar file, open its terminal, run wekastart "path to a knowledgeflow file"

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