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In model evaluation, what does accuracy mean?

Answer and explanation

Correct answer: The proportion of correct predictions among all predictions

Accuracy measures the overall fraction of predictions that match the actual classes. For a binary classification confusion matrix, accuracy = (TP + TN) / (TP + TN + FP + FN), where TP and TN are correct decisions. Option B is precision, calculated as TP/(TP+FP); option C is recall, TP/(TP+FN); and option D is the F1 score, so A is the only correct definition.

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Artificial IntelligenceAccuracyModel EvaluationClassificationPrecisionRecallUnit 4: Ai With Orange Data Mining ToolUnit 4 Ai With Orange Data Mining Tool

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