=== Run information === Scheme: weka.classifiers.trees.J48 -L -C 0.25 -M 50 Relation: abalone 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 <= 0.249 | shell_weight <= 0.154: Young (1140.0/147.0) | shell_weight > 0.154 | | shucked_weight <= 0.3025 | | | sex = M | | | | shell_weight <= 0.1775: Young (55.0/26.0) | | | | shell_weight > 0.1775: Old (77.0/17.0) | | | sex = F: Old (142.0/34.0) | | | sex = I | | | | whole_weight <= 0.6175: Young (114.0/27.0) | | | | whole_weight > 0.6175: Old (52.0/23.0) | | shucked_weight > 0.3025 | | | shucked_weight <= 0.3745 | | | | whole_weight <= 0.788: Young (159.0/40.0) | | | | whole_weight > 0.788: Old (69.0/25.0) | | | shucked_weight > 0.3745: Young (184.0/39.0) shell_weight > 0.249 | shucked_weight <= 0.3965: Old (356.0/55.0) | shucked_weight > 0.3965 | | shell_weight <= 0.2905 | | | sex = M | | | | diameter <= 0.46: Old (57.0/27.0) | | | | diameter > 0.46: Young (59.0/21.0) | | | sex = F: Young (87.0/41.0) | | | sex = I: Old (22.0/9.0) | | shell_weight > 0.2905: Old (1102.0/192.0) Number of Leaves : 15 Size of the tree : 27 Time taken to build model: 0.04 seconds === Stratified cross-validation === === Summary === Correctly Classified Instances 2870 78.0952 % Incorrectly Classified Instances 805 21.9048 % Kappa statistic 0.5619 K&B Relative Info Score 154012.4458 % K&B Information Score 1540.1228 bits 0.4191 bits/instance Class complexity | order 0 3675.0001 bits 1 bits/instance Class complexity | scheme 2614.6781 bits 0.7115 bits/instance Complexity improvement (Sf) 1060.322 bits 0.2885 bits/instance Mean absolute error 0.3093 Root mean squared error 0.3985 Relative absolute error 61.8516 % Root relative squared error 79.7073 % Coverage of cases (0.95 level) 100 % Mean rel. region size (0.95 level) 100 % Total Number of Instances 3675 === Detailed Accuracy By Class === TP Rate FP Rate Precision Recall F-Measure MCC ROC Area PRC Area Class 0.775 0.214 0.784 0.775 0.78 0.562 0.833 0.815 Young 0.786 0.225 0.778 0.786 0.782 0.562 0.833 0.791 Old Weighted Avg. 0.781 0.219 0.781 0.781 0.781 0.562 0.833 0.803 === Confusion Matrix === a b <-- classified as 1426 413 | a = Young 392 1444 | 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 390 78 % Incorrectly Classified Instances 110 22 % Kappa statistic 0.5593 Mean absolute error 0.3132 Root mean squared error 0.402 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 0.805 0.246 0.774 0.805 0.789 0.56 0.832 0.808 Young 0.754 0.195 0.786 0.754 0.77 0.56 0.832 0.783 Old Weighted Avg. 0.78 0.221 0.78 0.78 0.78 0.56 0.832 0.796 === Confusion Matrix === a b <-- classified as 206 50 | a = Young 60 184 | b = Old