diff options
Diffstat (limited to 'report/statistical_test.rb')
| -rw-r--r-- | report/statistical_test.rb | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/report/statistical_test.rb b/report/statistical_test.rb index da46f6b..fd4b810 100644 --- a/report/statistical_test.rb +++ b/report/statistical_test.rb @@ -6,7 +6,7 @@ module Reports class ReportStatisticalTest # __grouped_validations__ : array of validation arrays - def self.test_matrix( validations, group_attribute, test_attribute, class_value, test_method="paired_ttest", significance_level=0.95 ) + def self.test_matrix( validations, group_attribute, test_attribute, class_value, test_method="ttest", significance_level=0.95 ) raise "statistical-test: '"+test_method+"' does not exist" unless ReportStatisticalTest.respond_to?(test_method) grouped_validations = Reports::Util.group(validations, [group_attribute]) @@ -35,12 +35,20 @@ module Reports {:titles => titles, :matrix => matrix, :num_results => grouped_validations[0].size} end - def self.paired_ttest( validations1, validations2, attribute, class_value, significance_level=0.95 ) + def self.ttest( validations1, validations2, attribute, class_value, significance_level=0.95 ) array1 = validations1.collect{ |v| (v.send(attribute).is_a?(Hash) ? v.send(attribute)[class_value].to_f : v.send(attribute).to_f) } array2 = validations2.collect{ |v| (v.send(attribute).is_a?(Hash) ? v.send(attribute)[class_value].to_f : v.send(attribute).to_f) } LOGGER.debug "paired-t-testing "+attribute.to_s+" "+array1.inspect+" vs "+array2.inspect - Reports::r_util.paired_ttest(array1, array2, significance_level) + if array1.size>1 && array2.size>1 + Reports::r_util.paired_ttest(array1, array2, significance_level) + elsif array1.size==1 && array2.size>1 + -1 * Reports::r_util.ttest(array2, array1[0], significance_level) + elsif array1.size>1 && array2.size==1 + Reports::r_util.ttest(array1, array2[0], significance_level) + else + raise "illegal input for ttest" + end end end |