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Data Mining

Note

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Regression handles numerical
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Classification handles categories (Concrete classes)

Confusion Matrix

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Column indicates Actual
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Row indicates Predicted
Positive
Negative
Positive
True Positive
False Positive
Negative
False Negative
True Negative

Evaluation

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Precision formula
◦
TP/(TP+FP)TP/(TP+FP)
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Recall formula
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TP/(TP+FN)TP/(TP+FN)
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Specificity formula
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TN/(TN+FP)TN/(TN+FP)

Alternative names for Data Mining

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knowledge discovery (mining) in database (KDD)
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knowledge extraction
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data/pattern analysis
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data archeology
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business intelligence

Data Mining Issues

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Human interaction
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Over fitting
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Outliers
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Interpretation of results
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Visualization of results
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Large datasets
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High dimensionality
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Multimedia data
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Missing data
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Irrelevant data
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Noisy data
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Changing data
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Integration
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Applications

Reference