Data Mining with WEKA (Mining Association Rules)ocw.snu.ac.kr/sites/default/files/NOTE/10438.pdf ·...
Transcript of Data Mining with WEKA (Mining Association Rules)ocw.snu.ac.kr/sites/default/files/NOTE/10438.pdf ·...
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Data Mining with WEKA(Mining Association Rules)
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Explorer: finding associations
§ WEKA contains an implementation of the Apriori algorithm for learning association rules– Works only with discrete data
§ Can identify statistical dependencies between groups of attributes:– milk, butter Þ bread, eggs (with confidence 0.9 and
support 2000)
§ Apriori can compute all rules that have a given minimum support and exceed a given confidence
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Data Mining with WEKA(Knowledge Flow GUI)
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The Knowledge Flow GUI
§ Graphical user interface for WEKA§ Java-Beans-based interface for setting up and
running machine learning experiments§ Data sources, classifiers, etc. are beans and can
be connected graphically§ Data “flows” through components: e.g.,
“data source” -> “filter” -> “classifier” -> “evaluator”
§ Layouts can be saved and loaded again later
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