Exercises for Patterns in Recordings

Transcript

1. Patterns in Recording - Exercises Ben Fields

2. WEKA basics • Launch the WEKA Application • Select ‘Explorer’

   • Load ’50_weka_class_labeled.arff’ • Select various Attributes (features)

3. WEKA basics • Attribute selection with regular expressions (‘.*’ is

   an expanding wild card) • Find all the MFCC attributes • also select ‘CLASS’ • press ‘Invert’, then ‘Remove’

4. using a classifier • Select ‘Classify’ tab • ‘Choose’ >>

   ‘classifiers/bayes/ NaiveBayes’ • set test options to ‘Cross-validation’ • press ‘Start’

5. putting it all together • now repeat the whole process

   using LPC features

6. Explore more files and features • Load ‘training_data_after_parsing.arff’ • Classify

   against the CLASS mood labels using Random Forests and J48. Which performs better? Which classes are most confused?