在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus! s+ J4 |3 x; w9 r+ {# O( G+ l7 r- _
ask turtles with [infected?]8 Q+ H; h6 A8 I2 B6 t
[ ask link-neighbors with [not resistant?]
* C0 b5 P X8 H( g! j- [) w [ if random-float 100 < virus-spread-chance, r6 x' y# J& g$ t# M) G/ P
[ 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？/ M8 O9 f6 `4 i* v. x$ o
to do-virus-checks
d4 V7 P3 I2 x( l& C/ X: o5 _; S, _ ask turtles with [infected? and virus-check-timer = 0]
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- g3 I' X( G6 Y- w: a( L# I5 |4 F if random 100 < recovery-chance! b! a4 B! }, }* B1 l6 ?
[
# |& V2 a' J1 ]0 l4 ^, K ifelse random 100 < gain-resistance-chance
3 D- A" X; ~: y6 M! x0 f9 s- | [ become-resistant ]
0 _; T) b' \- h- S0 F [ become-susceptible ]. \3 o" w) k7 a* k( w0 y/ ~( }/ ^0 _
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end
9 B/ l1 b V! k/ Z' I" r# o: d下面同样这个问题不明白
( v4 H) L8 M7 o6 Q! Q/ G3 V$ u小妹求大神帮忙！！
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发表于 2015-1-7 11:27:22
楼主