WEKA project was initiated in early 1992 by the New Zealand Government, and more than 21 years have elapsed since the first public release of WEKA. Along that period of time, the software has been rewritten entirely from scratch once. Initially it was written in C programming language, and along the time it became a burden and they have moved to Java. These days, WEKA enjoys its acceptance in both academic and business levels because, WEKA is an open source project and it has an active community.

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3. Photo by Laraine Sanneke on http://labarker.com/NZbirds.html
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Problems
• Became increasingly difficult to maintain
• Configuring made difficult for Developers
• Installation was a frustration
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Problems
• Became increasingly difficult to maintain
• Configuring made difficult for Developers
• Installation was a frustration
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Proposed Solution
Decided to Rewrite the system,
Entirely in JAVA
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Performance of JAVA?
Implementing Computationally intensive
Machine Learning Algorithms…..
Questionable???
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JAVA
“Write Once, Run Anywhere”
“Simple Packaging”
“Distribution”
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Performance of JAVA

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WEKA Version
3.4
WEKA Version
3.6
No. of Java
Classes
690 1081
LOC (Lines of
Code)
271,447 509,903

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Scatter plots
ROC curves
Trees
Graphs

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SQL viewer
Bayes network editor

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Scatter plots
ROC curves
Trees
Graphs
SQL viewer
Bayes network editor

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Scatter plots
ROC curves
Trees
Graphs
SQL viewer
Bayes network editor

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Statistics
Data Mining
AI
Machine Learning
Pattern Recognition

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