在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus
7 O+ l. y( T2 E3 h3 F' F) d& z+ n2 ? ask turtles with [infected?]
' `# K3 y- [, X& K1 a2 a [ ask link-neighbors with [not resistant?]
$ K8 ]( n7 \! {, B5 Z [ if random-float 100 < virus-spread-chance
! i5 B$ z. |, f- o! F [ become-infected ] ] ]6 G- S0 L$ J$ }7 w8 t" q+ m3 D- N
end, H# x3 n: a, A) u
这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？9 t6 ~3 \0 u8 w8 L( t. Z
to do-virus-checks
7 J- a2 J1 d( t' q ask turtles with [infected? and virus-check-timer = 0]
/ T I* {" \' f. G6 z0 p [; g1 m/ c# s: g/ O0 v1 S# K
if random 100 < recovery-chance% ^2 M7 B/ }1 f5 G) I% u$ M
[) r: F1 Y- Y" I0 c9 l) c h
ifelse random 100 < gain-resistance-chance- J9 e1 }$ w- }4 X
[ become-resistant ]# ~3 J3 x2 `4 c1 `* }9 s, V
[ become-susceptible ]
! Z F; d; p7 H- X ? ]3 C) ?: m- i( [$ W' c- X* [5 Y+ E
]" A9 P, ~. [/ e3 _; k
end
$ H, G; ]3 @; z ~! @- P, \6 R下面同样这个问题不明白
z, M9 ]& L3 @& |; `4 S小妹求大神帮忙！！
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发表于 2015-1-7 11:27:22
楼主