[Verse 1] Your model's trained and ready now, predictions flowing fast But numbers on the screen don't tell if algorithms last True positives dancing with the false ones in disguise We need a scorecard system to see through the lies [Chorus] Precision asks "when I said yes, was I mostly right?" Recall demands "did I catch all the targets in my sight?" F1 brings them together in harmonious blend AUC-ROC curves the story from beginning to end Confusion matrix shows the truth, no place left to hide These metrics are your compass, let them be your guide [Verse 2] Picture spam detection working through your email heap Precision counts the real spam in your filtered keep If ninety emails marked as junk are truly waste That's ninety percent precision, not a digit misplaced [Chorus] Precision asks "when I said yes, was I mostly right?" Recall demands "did I catch all the targets in my sight?" F1 brings them together in harmonious blend AUC-ROC curves the story from beginning to end Confusion matrix shows the truth, no place left to hide These metrics are your compass, let them be your guide [Verse 3] But recall flips the question, searches every corner deep Of hundred actual spam messages, how many did you reap? If eighty slipped through filters while twenty got caught Your recall's twenty percent, the rest just slipped your thought [Bridge] Confusion matrix lays it bare in perfect two-by-two True positive, false negative, false positive, true negative too ROC curves plot the trade-offs as thresholds shift around AUC measures area where perfect balance can be found [Chorus] Precision asks "when I said yes, was I mostly right?" Recall demands "did I catch all the targets in my sight?" F1 brings them together in harmonious blend AUC-ROC curves the story from beginning to end Confusion matrix shows the truth, no place left to hide These metrics are your compass, let them be your guide [Outro] F1 score takes the mean of precision and recall When both matter equally, it captures it all Your models need evaluation, not just hopes and dreams Success lives in the metrics, not just what it seems
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