=== Run information === Scheme: weka.classifiers.trees.J48 -C 0.25 -M 50 Relation: abalone-weka.filters.supervised.attribute.Discretize-Rfirst-last Instances: 3675 Attributes: 9 sex length diameter height whole_weight shucked_weight viscera_weight shell_weight Age Test mode: 10-fold cross-validation === Classifier model (full training set) === J48 pruned tree ------------------ shell_weight = '(-inf-0.04825]': Young (249.0/2.0) shell_weight = '(0.04825-0.15425]': Young (891.0/145.0) shell_weight = '(0.15425-0.24925]' | shucked_weight = '(-inf-0.05725]': Young (0.0) | shucked_weight = '(0.05725-0.18025]': Old (37.0/14.0) | shucked_weight = '(0.18025-0.27425]' | | sex = M: Old (93.0/26.0) | | sex = F: Old (92.0/21.0) | | sex = I: Young (106.0/28.0) | shucked_weight = '(0.27425-0.499]': Young (496.0/177.0) | shucked_weight = '(0.499-0.65125]': Young (23.0/4.0) | shucked_weight = '(0.65125-inf)': Old (5.0/2.0) shell_weight = '(0.24925-0.29275]' | shucked_weight = '(-inf-0.05725]': Old (0.0) | shucked_weight = '(0.05725-0.18025]': Old (0.0) | shucked_weight = '(0.18025-0.27425]': Old (38.0/4.0) | shucked_weight = '(0.27425-0.499]': Old (327.0/119.0) | shucked_weight = '(0.499-0.65125]': Young (71.0/30.0) | shucked_weight = '(0.65125-inf)': Young (5.0/2.0) shell_weight = '(0.29275-0.38125]': Old (694.0/159.0) shell_weight = '(0.38125-inf)': Old (548.0/41.0) Number of Leaves : 18 Size of the tree : 22 Time taken to build model: 0 seconds === Stratified cross-validation === === Summary === Correctly Classified Instances 2898 78.8571 % Incorrectly Classified Instances 777 21.1429 % Kappa statistic 0.5771 K&B Relative Info Score 153128.8728 % K&B Information Score 1531.2871 bits 0.4167 bits/instance Class complexity | order 0 3675.0001 bits 1 bits/instance Class complexity | scheme 2524.0351 bits 0.6868 bits/instance Complexity improvement (Sf) 1150.965 bits 0.3132 bits/instance Mean absolute error 0.3085 Root mean squared error 0.3938 Relative absolute error 61.7071 % Root relative squared error 78.7651 % Coverage of cases (0.95 level) 99.9456 % Mean rel. region size (0.95 level) 96.6122 % Total Number of Instances 3675 === Detailed Accuracy By Class === TP Rate FP Rate Precision Recall F-Measure MCC ROC Area PRC Area Class 0.79 0.213 0.788 0.79 0.789 0.577 0.841 0.833 Young 0.787 0.21 0.789 0.787 0.788 0.577 0.841 0.818 Old Weighted Avg. 0.789 0.211 0.789 0.789 0.789 0.577 0.841 0.825 === Confusion Matrix === a b <-- classified as 1453 386 | a = Young 391 1445 | b = Old === Re-evaluation on test set === User supplied test set Relation: abalone-test Instances: unknown (yet). Reading incrementally Attributes: 9 === Summary === Correctly Classified Instances 355 71 % Incorrectly Classified Instances 145 29 % Kappa statistic 0.4246 Mean absolute error 0.4919 Root mean squared error 0.4922 Coverage of cases (0.95 level) 100 % Total Number of Instances 500 === Detailed Accuracy By Class === TP Rate FP Rate Precision Recall F-Measure MCC ROC Area PRC Area Class 0.543 0.115 0.832 0.543 0.657 0.454 0.704 0.7 Young 0.885 0.457 0.649 0.885 0.749 0.454 0.704 0.621 Old Weighted Avg. 0.71 0.282 0.743 0.71 0.702 0.454 0.704 0.661 === Confusion Matrix === a b <-- classified as 139 117 | a = Young 28 216 | b = Old