| outlook | temp | humidity | windy | play | $C-play | $CC-play |
| overcast | hot | high | ffalse | yes | yes | 0.857143 |
| overcast | cool | normal | ttrue | yes | yes | 0.857143 |
| overcast | mild | normal | ttrue | yes | yes | 0.857143 |
| overcast | mild | high | ttrue | yes | yes | 0.857143 |
| overcast | hot | normal | ffalse | yes | yes | 0.857143 |
| rain | mild | high | ffalse | yes | yes | 0.800000 |
| rain | cool | normal | ffalse | yes | yes | 0.800000 |
| rain | mild | normal | ffalse | yes | yes | 0.800000 |
| rain | cool | normal | ttrue | no | no | 0.750000 |
| rain | mild | high | ttrue | no | no | 0.750000 |
| sunny | hot | high | ffalse | no | no | 0.666667 |
| sunny | hot | high | ttrue | no | no | 0.666667 |
| sunny | mild | high | ffalse | no | no | 0.666667 |
| sunny | cool | normal | ffalse | yes | no | 0.666667 |
这里的$CC-play是如何计算出来的?想了很久,实在想不出来,请大家指教。


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