在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus! x4 K2 ]& d; S8 k& z9 N
ask turtles with [infected?]
: B6 e# M* r8 U+ p [ ask link-neighbors with [not resistant?] W8 b# S$ b' n9 Y4 d2 J9 l
[ if random-float 100 < virus-spread-chance/ y. o1 b( p8 e" X
[ become-infected ] ] ]
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这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？8 H X# u) A6 ^$ }+ W9 G* s& E, U& k
to do-virus-checks
) g+ P( c2 D4 ~! `; F ask turtles with [infected? and virus-check-timer = 0]
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4 [5 W) d: O; [1 J5 `' W! p if random 100 < recovery-chance4 S& \% u H v$ d; F1 \
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ifelse random 100 < gain-resistance-chance. X% x5 L) b+ x1 D+ v8 V8 N
[ become-resistant ]5 h0 x8 S8 l0 P {6 G( x5 B
[ become-susceptible ]0 _; [8 N% r9 N5 x8 S% x2 F
], k9 f+ ]: k- y
]
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下面同样这个问题不明白
- M4 H- \$ ?' U, p5 Q- C小妹求大神帮忙！！ 6 ?: T+ a, N- E2 j* b; i, T
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发表于 2015-1-7 11:27:22
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