在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus
/ i' { G5 ?* D' N% q ask turtles with [infected?]
, h. F: z( m+ A+ V6 W9 I( Z, P [ ask link-neighbors with [not resistant?]2 C% u# i9 x# J |: G/ ]/ ]# o
[ if random-float 100 < virus-spread-chance* ]' W, S0 r1 t: e
[ become-infected ] ] ] b" O$ T3 [; P$ `$ S9 @
end/ p' K1 ?3 p% B: N7 Z) Y& n
这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？0 {1 P% _9 k. q
to do-virus-checks
& E) S! G% t! n: v ask turtles with [infected? and virus-check-timer = 0]8 j% w/ `5 u8 ^
[3 J' }0 O% y) X. o
if random 100 < recovery-chance
0 t I4 F; [1 T8 _ [8 B5 ]) v/ \0 b, c0 ]0 N3 x" j
ifelse random 100 < gain-resistance-chance2 [3 P9 Y; d% C, t" z8 c8 I
[ become-resistant ]6 y6 i6 N5 ~2 W) L- j6 u
[ become-susceptible ]6 K8 \5 n2 M& v: w
]0 K( ~, Z! G7 J
]
' p8 x ]! Q5 ]3 R" ^- qend: X; M5 E( @1 A- p% @) g: B9 X. G
下面同样这个问题不明白
/ g9 v# c7 K) y& ?1 Z小妹求大神帮忙！！ 2 L9 r7 E$ q& ` x4 `3 L% h
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发表于 2015-1-7 11:27:22
楼主