在netlogo模型库中有一个virus on a network，里面有一个代码to spread-virus
, }" Z: y/ m4 Q ask turtles with [infected?]
, c. e' }" m0 s [ ask link-neighbors with [not resistant?]& {4 G3 O. t9 a$ Q- C
[ if random-float 100 < virus-spread-chance, l9 n- T1 n+ Q1 F/ ?$ W+ m* J
[ become-infected ] ] ]8 b# `% e2 T i+ }, b
end/ Y8 J5 I s, H, Z8 z; m) ~
这里为什么virus-spread-chance大于random-float 100,就可以判断出become-infected呢？
2 @/ r- Q; t, T+ mto do-virus-checks; u$ ]/ ~: n! r; P! r- l/ z
ask turtles with [infected? and virus-check-timer = 0]
: }/ D+ M; r$ N2 s1 t* B. [ [
- q8 P& G0 }3 ^8 R+ @1 `: H, u if random 100 < recovery-chance
$ [ A/ r0 S5 c. l( y5 d r [
0 _$ ^" N' o' j9 b ifelse random 100 < gain-resistance-chance
6 Q2 D" V3 p. h) t/ n [ become-resistant ]2 d6 _1 M& ]7 h# j) Q
[ become-susceptible ]
; n% G! i2 B3 m' r) a8 c( }9 C( H ]$ E/ b3 M; j* b8 m7 b
]
7 {2 F' h" ]0 S% r) Rend/ e4 n! A, d1 B$ `, ^
下面同样这个问题不明白
! L+ }, V9 m0 g小妹求大神帮忙！！ + a7 S% h2 m6 H4 Y
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发表于 2015-1-7 11:27:22
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