Table 3 Percentage of Penguin Watch (CS) classifications that are greater than (GS < CS), less than (GS > CS) or equal to (GS = CS) gold standard (GS) classifications (i.e. overestimates, underestimates or matches) for DAMOa, HALFc, LOCKb and PETEc.
From: Time-lapse imagery and volunteer classifications from the Zooniverse Penguin Watch project
Threshold employed | ||||||||
|---|---|---|---|---|---|---|---|---|
Only adult classifications | Only chick classifications | |||||||
>1 | >2 | >3 | >4 | >1 | >2 | >3 | >4 | |
DAMOa | n=300 | n=60 | ||||||
GS<CS (%) | 67.00 | 51.67 | 33.67 | 18.00 | 15.00 | 10.00 | 3.33 | 3.33 |
GS>CS (%) | 9.33 | 22.00 | 33.33 | 51.33 | 61.67 | 71.67 | 81.67 | 86.67 |
GS=CS (%) | 23.67 | 22.33 | 33.00 | 30.67 | 23.33 | 18.33 | 15.00 | 10.00 |
HALFc | n=283 | n=109 | ||||||
GS<CS (%) | 48.06 | 35.34 | 12.61 | 14.49 | 17.43 | 11.01 | 2.75 | 0.92 |
GS>CS (%) | 12.72 | 20.14 | 32.16 | 48.76 | 57.80 | 63.30 | 73.39 | 79.82 |
GS=CS (%) | 39.22 | 44.52 | 45.23 | 36.75 | 24.78 | 25.69 | 23.85 | 19.27 |
LOCKb | n=300 | n=122 | ||||||
GS<CS (%) | 48.67 | 37.67 | 27.33 | 22.33 | 27.05 | 23.77 | 17.21 | 9.84 |
GS>CS (%) | 11.00 | 18.33 | 26.67 | 32.00 | 51.64 | 54.92 | 63.11 | 66.39 |
GS=CS (%) | 40.33 | 44.00 | 46.00 | 45.67 | 21.31 | 21.31 | 19.67 | 23.77 |
PETEc | n=300 | n=179 | ||||||
GS<CS (%) | 79.33 | 55.33 | 26.33 | 13.67 | 32.96 | 20.67 | 10.06 | 6.70 |
GS>CS (%) | 13.00 | 30.67 | 54.00 | 77.00 | 58.66 | 72.07 | 83.24 | 91.60 |
GS=CS (%) | 7.67 | 14 | 19.67 | 9.33 | 8.38 | 7.26 | 6.70 | 1.68 |
