Move the threshold marker to three quarters.

highlighted = computed this step

Move the threshold marker

Now set threshold 3/4. A is the only row on or above that marker.

t=3/4t=3/4
Decision Thresholds ExactlyExact score rows under two stated thresholds.same scored rows under two thresholdsthreshold 1/2score line, threshold 1/201t=1/2A4/5B3/5C2/5D1/5predictions at 1/2rowyscorepredA14/51B03/51C12/50D01/50confusion grid at 1/2cellcountTP1FP1FN1TN1threshold 3/4score line, threshold 3/401t=3/4A4/5B3/5C2/5D1/5predictions at 3/4rowyscorepredA14/51B03/50C12/50D01/50confusion grid at 3/4cellcountTP1FP0FN1TN2same four scored rows; rule is score at least thresholddoes not claim: NOT best threshold; NOT accuracy guaranteeNOT future performance; NOT calibration; NOT fairnessNOT safety; NOT generalization; NOT probability truth

Read the new predictions

A gets output 1. B, C, and D get output 0.

y^=(1,0,0,0)\hat y=(1,0,0,0)
Decision Thresholds ExactlyExact score rows under two stated thresholds.same scored rows under two thresholdsthreshold 1/2score line, threshold 1/201t=1/2A4/5B3/5C2/5D1/5predictions at 1/2rowyscorepredA14/51B03/51C12/50D01/50confusion grid at 1/2cellcountTP1FP1FN1TN1threshold 3/4score line, threshold 3/401t=3/4A4/5B3/5C2/5D1/5predictions at 3/4rowyscorepredA14/51B03/50C12/50D01/50confusion grid at 3/4cellcountTP1FP0FN1TN2same four scored rows; rule is score at least thresholddoes not claim: NOT best threshold; NOT accuracy guaranteeNOT future performance; NOT calibration; NOT fairnessNOT safety; NOT generalization; NOT probability truth

Scores did not change

Only the threshold marker moved. The four score fractions stayed the same.

same scores; moved threshold\text{same scores; moved threshold}
Decision Thresholds ExactlyExact score rows under two stated thresholds.same scored rows under two thresholdsthreshold 1/2score line, threshold 1/201t=1/2A4/5B3/5C2/5D1/5predictions at 1/2rowyscorepredA14/51B03/51C12/50D01/50confusion grid at 1/2cellcountTP1FP1FN1TN1threshold 3/4score line, threshold 3/401t=3/4A4/5B3/5C2/5D1/5predictions at 3/4rowyscorepredA14/51B03/50C12/50D01/50confusion grid at 3/4cellcountTP1FP0FN1TN2same four scored rows; rule is score at least thresholddoes not claim: NOT best threshold; NOT accuracy guaranteeNOT future performance; NOT calibration; NOT fairnessNOT safety; NOT generalization; NOT probability truth