=== Run information === Scheme: weka.classifiers.trees.J48 -C 0.25 -M 30 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 <= 0.1435: Young (1036.0/123.0) | shell_weight > 0.1435 | | shucked_weight <= 0.3025 | | | height <= 0.145 | | | | sex = M | | | | | height <= 0.13: Young (87.0/41.0) | | | | | height > 0.13: Adult (52.0/12.0) | | | | sex = F: Adult (120.0/42.0) | | | | sex = I: Young (204.0/52.0) | | | height > 0.145: Adult (68.0/18.0) | | shucked_weight > 0.3025 | | | shucked_weight <= 0.385 | | | | whole_weight <= 0.8045: Young (199.0/51.0) | | | | whole_weight > 0.8045: Adult (54.0/16.0) | | | shucked_weight > 0.385: Young (175.0/39.0) shell_weight > 0.249 | shucked_weight <= 0.4435 | | shell_weight <= 0.2835 | | | shucked_weight <= 0.3965: Adult (171.0/37.0) | | | shucked_weight > 0.3965: Young (55.0/22.0) | | shell_weight > 0.2835: Adult (292.0/68.0) | shucked_weight > 0.4435 | | shell_weight <= 0.2905 | | | sex = M: Young (86.0/33.0) | | | sex = F: Young (68.0/29.0) | | | sex = I: Adult (12.0/4.0) | | shell_weight > 0.2905: Adult (996.0/215.0) Number of Leaves : 16 Size of the tree : 29 Time taken to build model: 0.04 seconds === Stratified cross-validation === === Summary === Correctly Classified Instances 2744 74.6667 % Incorrectly Classified Instances 931 25.3333 % Kappa statistic 0.5048 K&B Relative Info Score 133540.684 % K&B Information Score 1516.2839 bits 0.4126 bits/instance Class complexity | order 0 4166.3623 bits 1.1337 bits/instance Class complexity | scheme 8501.0524 bits 2.3132 bits/instance Complexity improvement (Sf) -4334.6902 bits -1.1795 bits/instance Mean absolute error 0.234 Root mean squared error 0.3497 Relative absolute error 67.281 % Root relative squared error 83.8574 % Coverage of cases (0.95 level) 98.3946 % Mean rel. region size (0.95 level) 69.9229 % Total Number of Instances 3675 === Detailed Accuracy By Class === TP Rate FP Rate Precision Recall F-Measure MCC ROC Area PRC Area Class 0.762 0.224 0.775 0.762 0.769 0.538 0.828 0.825 Young 0.766 0.27 0.719 0.766 0.742 0.496 0.802 0.733 Adult 0 0 0 0 0 ? 0.81 0.066 Old Weighted Avg. 0.747 0.241 0.731 0.747 0.738 0.506 0.815 0.764 === Confusion Matrix === a b c <-- classified as 1410 440 0 | a = Young 407 1334 0 | b = Adult 2 82 0 | c = Old === Re-evaluation on test set === User supplied test set Relation: abalone-test Instances: unknown (yet). Reading incrementally Attributes: 9 === Summary === Correctly Classified Instances 382 76.4 % Incorrectly Classified Instances 118 23.6 % Kappa statistic 0.5373 Mean absolute error 0.2239 Root mean squared error 0.3362 Coverage of cases (0.95 level) 98.4 % Total Number of Instances 500 === Detailed Accuracy By Class === TP Rate FP Rate Precision Recall F-Measure MCC ROC Area PRC Area Class 0.784 0.216 0.777 0.784 0.78 0.568 0.849 0.83 Young 0.776 0.247 0.751 0.776 0.763 0.528 0.82 0.753 Adult 0 0 0 0 0 ? 0.69 0.036 Old Weighted Avg. 0.764 0.227 0.749 0.764 0.756 0.537 0.831 0.776 === Confusion Matrix === a b c <-- classified as 192 53 0 | a = Young 55 190 0 | b = Adult 0 10 0 | c = Old