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This forum is provided to promote discussion amongst students enrolled in Data Warehousing (CITS3401).
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UWA week 22 - 1st semester, week 12

photo Data Reduction: Sampling and feature reduction (both)
Thu 28th May 2020, 3:39pm, ANONYMOUS
Hi Zeyi For the data reduction question it asks use to perform numerosity "reduction using sampling and feature reduction." Does this mean we need to perform sampling and feature reduction on one version of the original data, and compare this to the original...
photo Comparing decision tree models (both)
Thu 28th May 2020, 10:45am, ANONYMOUS
Do we have to compare two tree models that have the same amount of attributes or is it fine to compare our original data (say it has 8 attributes) with our data with reduced attributes after attribute selection (only 5 attributes)?
photo Comparing Decision Tree Model with and without attribute selection (both)
Wed 27th May 2020, 10:30pm, ANONYMOUS
"Interpret and compare the results and performance of the Decision Tree Model with and without attribute selection" Just a bit of clarification on this question, when comparing with and without attribute selection does the mean we compare our reduced data...
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