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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
. P* e! I5 P0 L1 ^1 M0 ?# ~to do-business   O. y; Z' I5 H6 p& R
rt random 3609 N( X; c. }& h6 y: [
fd 15 P! J5 z9 O5 n4 p
ifelse(other turtles-here != nobody)[) l" R$ q7 `1 x8 K# a9 u0 |
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
0 t2 k; R8 {* S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . r( q- e5 c5 y9 {8 x9 s5 I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer5 [; b; }+ ~# h- n& U5 M
   set [trade-record-one-len] of self length [trade-record-one] of self. L" s1 s( A+ M0 r8 N9 k
   set trade-record-current( list (timer) (random money-upper-limit))& E( G1 k1 b8 M$ g% n: W
% ^/ Z* v. ~; ~3 n4 \, X0 R( `+ Q
问题的提示如下:( G4 M& U8 g. J4 T

: U% e! i, f& P. Zerror while turtle 50 running OF in procedure DO-BUSINESS
" N7 X4 T. ~$ s% U- X) M4 j/ z  called by procedure GO
' `% S& `/ O5 ^# T/ G; }  xOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 d& e% K; d1 ?0 S1 x$ [. G3 L
(halted running of go)+ J" z. ]( F% V! |% |
4 q0 X+ X  c4 x' @! r* n' `4 a# T
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~* h: ?9 t! M+ t9 D% d; _8 `% ~* b4 A
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教* V: m3 r+ J- k6 A
globals[! ]9 ~/ q! d; n% ?- h9 M+ ~! K% ?
xmax
5 h7 a& m1 [  C  H6 C$ T# S6 Eymax) ]0 C4 K. N( K* u. A
global-reputation-list. C/ w8 x; g) {/ Y, ^2 q" J

) Z) [8 {# g6 _  y  U;;
每一个turtle的全局声誉都存在此LIST
; J. @6 }1 y. w. L9 ~credibility-list) Q4 i  s. ~- v' _5 v
;;
每一个turtle的评价可信度
1 r. l5 ^( |4 g2 |. Yhonest-service
7 ?0 w9 [. x. n  Z& }/ _- hunhonest-service
. V, l6 ^0 j! Hoscillation
( o8 y0 Q& h. |- Zrand-dynamic# k, o6 C/ V; S7 a3 y
]
4 ], w% a- i$ G) \3 N. t. E+ C' I
& J6 z1 X1 X; d3 w4 dturtles-own[8 l* P2 L6 r  Y5 n* a) N# G
trade-record-all
4 Y! A9 _: T6 N3 I1 j( O! L;;a list of lists,
trade-record-one组成
9 s5 U' y7 |- S, _trade-record-one' I0 S* L+ ?. x: Z3 V/ y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 ~( g" L' n& N, o8 s- t8 l
; w" U$ g' l4 v" ?;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
6 y+ N/ G/ h2 `/ m4 j. V8 Ttrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]8 z4 H  r2 v+ e! B
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list4 @6 Y$ j0 v  [
neighbor-total
, t2 e) x5 Y7 w# K' z. C4 s+ s;;
记录该turtle的邻居节点的数目4 \; t3 p" T% C( t4 G# d) s
trade-time
: E9 j9 Y# r! f; w# |8 O;;
当前发生交易的turtle的交易时间
: g  w2 T* o) N3 E1 D/ Q0 Rappraise-give+ v0 ~+ K! w; j( q
;;
当前发生交易时给出的评价
* |% O, ]' L5 {$ N5 fappraise-receive2 m/ c& I# U) w5 g7 |" p
;;
当前发生交易时收到的评价
0 \' I- d* M! R# }) u2 I9 Rappraise-time- W1 M% _9 i3 P
;;
当前发生交易时的评价时间+ ~: Q9 u8 T' \; n6 [' k0 h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉# r2 n5 ~9 b& _2 k
trade-times-total
; P3 m1 f- e  T% C' o5 I. d;;
与当前turtle的交易总次数$ m# {" ^- L% S
trade-money-total
) q1 ?( h$ D+ R7 p# b* C8 m1 t5 J;;
与当前turtle的交易总金额3 B/ ~  B- J: D8 `8 F
local-reputation1 `. _8 g$ |) K' s" N. t
global-reputation! @; j0 @9 z& Z4 H
credibility! H6 L; M; c1 g  |' d" L( d9 ~
;;
评价可信度,每次交易后都需要更新3 ^/ x. {% S2 {* m9 Z
credibility-all4 [+ m2 `/ Z+ S- @( a+ z' M
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
$ B, P$ A# m' c9 k. C# E
) M7 S$ a  F4 F' ^;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.50 E" H3 Q: u$ Q/ M, V3 S; E
credibility-one9 E( u* O2 \$ e  q3 G+ @8 J
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
1 a1 K% |. u/ v6 `4 _; wglobal-proportion
8 R' j+ [  h* t/ }# ccustomer* @+ h- l4 f$ s+ y% k& R
customer-no
0 U) w7 r6 P- q& O9 p( {+ t! Mtrust-ok
- p% O8 p* }% z7 u$ z, Ttrade-record-one-len;;trade-record-one的长度1 z6 G# W7 S( f5 l  `4 T
]: I8 Z, u6 k% |- t2 w& O

7 k0 O7 w" `& C2 L  |1 p, N6 O;;setup procedure
/ Y, N% `5 d1 [) G$ w: x/ |) K: |: p2 T# Z* T/ U6 I  r
to setup
' d6 I5 n: r# M9 s
( H0 t5 v  g- m! {: y" c/ dca

' [) Z8 n$ V1 D6 b  c' S: `- \+ M" X
* G# U: b% s* Y2 f; T5 Einitialize-settings

3 U9 A+ q. I6 l0 K
& T/ b! `  O/ z" ncrt people [setup-turtles]

5 {- p# K5 r5 m! Q$ R. S; a, F# g* e/ ~1 R* o
reset-timer

5 V) V( U( M/ K( b1 H( v+ y
/ [! y" s" `3 v" s; j3 jpoll-class
! _1 D/ \  ~& D: I* O
+ A- y0 J4 e/ y8 I
setup-plots
6 ^1 T& w( T" m& Z

- j" H7 h: i0 q0 p/ Xdo-plots

6 S! p. W6 r5 A( v/ p7 }end6 G6 y  c9 D" `5 f$ Y

4 b# I& Z. r& w$ q8 h7 b" ?to initialize-settings2 `$ k# {9 _; k

& A5 r, M6 S  M' t7 }! M" O" l8 lset global-reputation-list []
! _2 m6 o9 D+ d1 e) @2 F" \/ U% \

' [/ Z0 q3 n) W2 w9 @! g2 G. Lset credibility-list n-values people [0.5]
5 _1 z/ J* e8 D& F! e* J, b+ s
, f% r% Z: W1 g# ?7 i: L- k8 f8 \
set honest-service 0

0 R# g: y5 l) j! \: x2 q2 Z, s7 k: p9 M& E" H$ \  d2 k% b' E
set unhonest-service 0

. w! h2 i* T# W6 L* j# v1 A# H6 c
) G) A; a: z. L; V! S9 gset oscillation 0

" b; M" F7 V: B
+ n* x4 p# [1 N6 A- Cset rand-dynamic 0
% R: _6 t- L# d# p: t) |! ?  [
end" D& w0 c! ^( h  V$ s" F

' ], R  r# g. b0 X# R) Oto setup-turtles
# M: {& f, x$ C7 Hset shape "person"
7 v& @" L6 B  B$ b# Csetxy random-xcor random-ycor
9 y& \, Q. q  g9 j) I9 cset trade-record-one []0 s& Q8 R2 k+ H- e+ d

4 {- ~& O0 g1 [! Y2 t4 ~set trade-record-all n-values people [(list (? + 1) 0 0)]
$ ~2 X2 A& U. w: s% l# _2 t
7 N/ A6 [1 g( m1 g
set trade-record-current []
( C' c# J5 h- t: i& p( c- bset credibility-receive []% L& L( l6 X  }
set local-reputation 0.5( d7 W* D) K  {9 J0 g+ P( R" e
set neighbor-total 0- z' o+ {  V' _+ Q$ l% \6 M
set trade-times-total 0
  _/ O3 i; o3 b# _& _set trade-money-total 0( I/ b% x" y8 s' g
set customer nobody
% b- \2 z" a/ g. G% [" ]- A2 V6 dset credibility-all n-values people [creat-credibility]% b/ y" V9 _  {( j& p
set credibility n-values people [-1]9 |! a0 }& _) }2 n2 j' m& f
get-color4 j" N4 q! {6 }
5 u8 X! Z. f. r# q) R" @0 T, l
end$ T/ h+ G, b! f# W( y

: h& C2 u7 X/ A/ g1 i/ C) @& Zto-report creat-credibility% g) J, B) O% o
report n-values people [0.5]
. x( z& q/ b* ~end
! k! \- G  N4 C; _8 J& K' k% v5 ]
to setup-plots
% P# Z" }3 A* M; _4 q8 G( U
8 Y' U0 J/ B; l7 R8 _; y) Vset xmax 30

, c; M9 E" S5 h0 E; `% t5 a
9 x$ R9 b$ ]3 l- v! d0 qset ymax 1.0

1 O2 `& b, M/ y. e5 p6 t8 T# w5 Q
# l: K, ~$ }' L# `4 Eclear-all-plots
& S( }" L6 g. ?
# u% I- ~2 q- o, X
setup-plot1
; |' y3 M! q) I$ T

! F" e/ }# q7 B) R# j6 Fsetup-plot2

" {: \" U( i2 q5 C) q! y. ~8 h* }- r, y& q
setup-plot3
8 H" |: O6 R# r  n
end8 F3 r# W  |; C) \1 T+ A) Y
0 e+ O0 p- U  X* j* D) i, l) r! F: i3 z
;;run time procedures
: h* G9 T# A+ V! [3 v2 E; _% k% N) P- n+ Q
to go( _. a; C  z1 p3 a4 v' {+ r

4 a* Y* D) ^& I3 w' d0 B$ _ask turtles [do-business]

" H- T. j2 ^+ z2 l9 Xend/ I/ e% N/ z7 l1 D2 C

9 o8 T% p0 o: P  r4 Yto do-business
7 z2 i5 e; U3 k
0 r+ d+ J/ N# I, S7 f& Q

( g- y3 D% |, @5 d0 Trt random 360

6 i& }% w3 {9 D6 v" j1 U
0 f4 f! h8 y& R: {fd 1
+ m9 s# n, ?. |& `0 R
7 K( g' z- v% S# n
ifelse(other turtles-here != nobody)[

+ J9 N" d7 h5 ?6 R5 V
* K. x5 b1 f3 M6 sset customer one-of other turtles-here
0 M) V! G! ~8 a$ R3 q5 @* _7 @

2 G; R) e( X! A: N;; set [customer] of customer myself
4 ~  n. \  s- D; ^9 ]

. `# f! H7 x; l: n% Aset [trade-record-one] of self item (([who] of customer) - 1)# w( {4 ?. g0 z0 v8 Q. _
[trade-record-all]of self
0 H* d" T) x4 m) P' s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 h' T7 u/ ^2 j- U' k" V/ q* Y# o# b9 f& l. Q: A# X% I1 m
set [trade-record-one] of customer item (([who] of self) - 1)
7 @& j+ E3 S6 K[trade-record-all]of customer
; ~4 s0 I9 M1 q$ C, w
9 C. d; R5 \9 x$ ~: y) J
set [trade-record-one-len] of self length [trade-record-one] of self

+ g0 D8 j4 G* N* ], J0 Y. m0 p2 f: o% e1 |, [$ X& o' V
set trade-record-current( list (timer) (random money-upper-limit))

6 s1 F+ X4 z5 H' D+ w* y! T9 y, R* v" ~
ask self [do-trust]
8 O2 _( _1 P, j: U# F' n) s;;
先求ij的信任度
- {& c7 e) }# u" L" V/ ^
' D4 d' @, w1 A1 U: K6 }if ([trust-ok] of self)
5 i2 F' r9 ?) e+ f5 c3 t: L;;
根据ij的信任度来决定是否与j进行交易[
* z- u* l& Y% |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' Q, i; W* A( A! Y, W+ y4 v  b
4 B  e( `1 e) i. U6 H: r& S
[
& T8 Z7 V3 n! `
- ?' @. K/ |" v) ?% x7 [  B- i
do-trade

5 m4 B. j( c/ R) L" h
% M( I$ j& F& V8 M! d) C' Cupdate-credibility-ijl
" v5 f7 R5 Z" N! X4 W% M' e
8 f+ x& z5 A1 E0 X7 x
update-credibility-list
8 Q  X$ F7 _/ r3 G- `% n3 S! F

" o" _& J8 Z! I* \! h5 U" l: W
; R) {8 u# m/ P4 h; kupdate-global-reputation-list

+ M$ \( G8 g/ C( @* a
9 r) |, R. I3 E: Z) b3 B" jpoll-class
/ S' R  i7 x4 r1 R" [

$ P/ t. a' u  b: zget-color

, V' e2 o7 x7 g" @0 [2 U- Z- P- e( t5 I4 E
]]
" ~4 P& m. o8 X# n& t
9 {  H2 ]" M) I  r8 ~;;
如果所得的信任度满足条件,则进行交易  f+ W3 q0 G" j& s8 j1 N+ ]

: e* @" u- ~& V. J  I$ k1 {. `[

) v% }7 ~6 l0 f' R
4 p: ~0 f  x4 j' p& K& nrt random 360
  N7 n' \5 F7 |8 T$ A+ l
* |% s# q( e  D% ]
fd 1

0 }+ r5 I- n! }2 ^$ F8 i/ R, `0 g) m& u: h" K
]
  a$ b+ O! i, r$ f
% q' o) Y& E# {7 o
end
% `0 w, O, J& o' `/ I# U1 Q

  a- g" o+ m- L8 ]& w; f4 V' [( Q& Dto do-trust
% s- M9 H$ ^( n$ G) u8 xset trust-ok False0 ?# x; y, e5 q, O- K* H, \  k# ~# U

1 k9 K6 o5 O% o, K, A

' `$ j3 c1 X6 dlet max-trade-times 02 I; I5 Z+ a1 O* v8 x3 V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; C( P1 g5 o9 F3 q  Blet max-trade-money 0
) v4 A) @7 F" X/ l9 @6 h) eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 I  z3 v3 N+ B: g% i$ V1 Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ o4 x1 |  F& g: }  X! W9 v5 M% e9 K- o

0 e/ o' W8 ^9 D/ r, d7 Zget-global-proportion
+ R# b; l. f4 N+ s' d, y( tlet trust-value
7 W$ q0 A- j$ v) B, Z7 n6 m0 Ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# R9 U1 P/ K. Z* G+ `8 `
if(trust-value > trade-trust-value)( T# J- ]6 j" [5 N+ a1 _
[set trust-ok true]
7 ^3 W9 B9 T8 d9 P1 d; @5 tend! E9 H( b  `0 k3 u* M
* Q5 \9 ]( x- d8 u+ M
to get-global-proportion+ u% [  L% v- x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, I3 p* u0 k; o0 _) R! s( O[set global-proportion 0]
+ A0 E/ p5 w5 F, e[let i 0
* g# }1 l) R5 T, Ulet sum-money 0  F1 L3 r; ?8 C% ?" h1 h
while[ i < people]2 A, i/ {, i: G: b$ R
[
8 b- q; \+ ?# H. X& _7 Fif( length (item i7 j9 f! H/ y5 M0 r6 c7 o% u  a3 p
[trade-record-all] of customer) > 3 )
% G* h! [8 T6 w
[3 G) b2 G/ g2 I7 E; {0 x
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% U. d9 `7 S5 u% T9 c. @- a5 j$ m]2 N# n( M: y2 w  ~' K2 P
]+ ]  b* s% j$ T! A8 l; M+ T
let j 03 h6 Q; N! q4 j8 |  A8 Q  B
let note 0
8 q- Y8 U2 L+ x9 c7 Zwhile[ j < people]
& Q" q6 o6 `6 |, k. {) i3 n6 o[
- {1 w4 q: ^4 V# D* d; Sif( length (item i
% i" D8 n7 v; g# U) J[trade-record-all] of customer) > 3 )

* R# x8 U5 M2 s4 J2 E[  F1 ^: j1 Y. H0 h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ N6 K- w; P% ~
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ B: v. @3 H" `2 O+ E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. A% T8 V4 K) F9 g2 u
]3 K+ ?9 G' T+ k4 E/ ~
]6 k, S; `, ]# R# T1 ?9 M
set global-proportion note
' g$ ]2 A4 F. X" ^3 o]6 _$ J2 [' M3 M* J* Z! e' p4 w6 E
end
2 R, o3 v- z, \( g1 X2 t, f! l8 a6 o+ p2 ^, Y/ k6 N8 e) e
to do-trade# @) `" b7 e7 i$ I* ?
;;
这个过程实际上是给双方作出评价的过程3 r' X' f7 t* i" q/ @) P$ T' P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" V. J1 w0 _6 f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. _& [1 t) q0 m# P- d0 Zset trade-record-current lput(timer) trade-record-current' L6 [7 @5 \* x% R- C5 g
;;
评价时间
5 Q9 R1 d% R$ I7 M- n" W7 T( }2 t! bask myself [! I2 s8 n2 k. O. C5 z
update-local-reputation( J! {, [; Y3 E
set trade-record-current lput([local-reputation] of myself) trade-record-current: f7 b% R& E; C1 F8 }/ l* R
]
- a( v* ~7 d2 Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 E& b0 I1 {/ L: _! g% C4 D0 f;;
将此次交易的记录加入到trade-record-one
5 l2 F% d# `$ e3 V) ?! N5 k+ Bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); ^" M% p2 I9 c3 u
let note (item 2 trade-record-current )7 M+ s" o' ~( S
set trade-record-current0 S7 h! }  ?8 t
(replace-item 2 trade-record-current (item 3 trade-record-current))

; M1 O- |3 I6 q- Gset trade-record-current
( ?( C9 I2 f8 A! _; I, C(replace-item 3 trade-record-current note)
  {* p! g- d0 S
: @/ G! ?( R4 t* ^/ \  }- U- K: C

' r, e. m7 v0 S7 c, c2 Uask customer [5 e) V# B# X( J9 Y1 C7 S
update-local-reputation$ J2 n& T9 D+ e% n% b
set trade-record-current
3 h1 O- z* N2 }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 e* `( m2 B9 c& u
]5 Q$ }2 G. m& P
, d+ x5 U# c$ K  \8 `  I

" K) @) [9 x; E/ \# m) G/ T" {set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) C  J, ?5 I, ~: m
* ~5 h1 a. Q9 l1 G  ~3 ]
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% X7 J: C' o( f/ y7 y, \5 I
;;
将此次交易的记录加入到customertrade-record-all
& _3 t. R/ m: [3 O" j4 B) Iend
( q9 n7 \- T1 E7 a. Z8 e/ R6 l3 `& X: `+ {+ C
to update-local-reputation
9 D. G# t2 r" ^- Dset [trade-record-one-len] of myself length [trade-record-one] of myself2 {) ?( V' O& h2 f& P/ H

$ o, ~4 x  z) h9 t* E
- ]& C2 U8 ~# T$ N;;if [trade-record-one-len] of myself > 3

  `2 N4 \& ~% M& q& y/ rupdate-neighbor-total% a3 w' Y. |( E$ m# z' ~  ^7 I% W
;;
更新邻居节点的数目,在此进行
" }5 i4 C9 ^: h( J/ n4 p8 G2 Llet i 3" ~8 m! E, U, H4 R) i4 G/ u! L) }
let sum-time 0
4 q8 ~1 D9 |  u/ _7 t3 t' w7 B% dwhile[i < [trade-record-one-len] of myself]) M; R' d+ v3 o8 y0 b
[1 s- c$ q6 i# j6 m9 p2 S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& p6 v" O- c$ N, e3 y$ m  H. uset i2 |. `0 @6 l; K5 G* q6 u2 `' f+ z
( i + 1)

  }1 I+ V+ d$ t1 T2 w8 R. @]
" z$ ?' c! g9 N8 Glet j 3  Z- \9 O  E4 M6 B/ H" o  ]
let sum-money 08 |; m5 y2 X% u2 i
while[j < [trade-record-one-len] of myself]. s4 S4 `) g. j
[
" H  M# a1 N5 V! _- lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ F  y: i. r: r& {, n7 c1 bset j( |, i; s% A8 ^# v3 h) U* S
( j + 1)

9 A2 w7 ^" c8 ?8 f/ B]
; V1 O8 ?8 w  q5 a# L9 s2 |let k 3
& |# g7 J  n7 U% e2 jlet power 0
' ?3 m& M4 I. W2 b1 ^0 h& @let local 00 L2 p% [  r/ d1 Y
while [k <[trade-record-one-len] of myself]
4 b% {$ c5 ~/ g$ z' h+ r[; O. U! G6 t6 a7 V; U9 a
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
9 I2 I, S6 T) @% I& Uset k (k + 1), Y( F/ ]  H# v
]
8 I7 ~( q( M9 J+ _5 K' Bset [local-reputation] of myself (local)  M5 z* U. c) D2 J
end/ M. T5 w" I- _. o

& t; Y, w/ d2 h# @5 n( N! Hto update-neighbor-total
& `' t( o2 ^$ b5 N( ]* W+ T
5 A, t( I. E. ~4 O& Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 G0 r1 l* l7 F& @8 |. R

4 z* r5 X) q' o# I# Z2 ^

' I" @+ Z* i, b# b9 V; D7 {end
& x% `0 K$ f$ J+ _" w8 Y: J$ ]
3 n+ f& |' }- M- A' rto update-credibility-ijl
) I" X4 P  W7 Q- L$ d8 ~# n3 W  v$ ^" l
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
+ g! |9 n- R' x8 H0 ilet l 0
  h) r" r+ g+ V4 b$ ?$ I& Twhile[ l < people ]
+ J# e  Y/ [# t# V+ C;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
: W1 q! O* X0 y0 o2 B[
" {) P/ @9 z0 u* jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 F- ]/ C9 G9 L) Q: `# Y4 a% Uif (trade-record-one-j-l-len > 3): H8 x; ]% Q- |& {9 v; Z+ d
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one5 o5 h* J0 V- H. `. C
let i 3
6 O% d6 ^7 }# I/ S$ n) Wlet sum-time 05 v* W7 j1 R# ]. A7 |' d
while[i < trade-record-one-len]9 c0 Z) i0 ^( ~6 g" z6 W* ^
[0 F- h% }0 M3 |
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' y9 j3 x. U3 T' h9 T: {
set i
9 E5 Y6 m$ L& [( K4 k2 i( i + 1)

1 ^0 b% d" S0 d]% W' p9 j9 j1 D1 B) ^
let credibility-i-j-l 0
4 E; \: I; M+ W/ ]3 r6 d5 I;;i
评价(jjl的评价)
' V/ b" s( u# y! ]let j 3
6 x. j! |% u" I+ j5 O+ m4 V3 elet k 4
& o* U/ M! T6 }% E8 V3 ~" hwhile[j < trade-record-one-len]6 L5 X  y: p. I5 s
[
1 k5 `$ d& b+ o* ~9 nwhile [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
; z  k6 y1 C6 |set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
, x4 P% a- B5 c1 a) w! r8 I& ?set j  q, |* P4 o0 l
( j + 1)
9 J, M) Z. q- S$ R7 s
]; [3 Q5 A( I, j4 Z
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l )). F% d3 x$ T3 A

/ y' B( l2 y2 C; t- i3 w
. ^, L: ?* s- u6 r, a* s; t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); P( K) M3 v, m& E
;;
及时更新il的评价质量的评价
: ]6 ]# F; s/ B0 O( x, E$ eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& g  V# J# Z9 w( Oset l (l + 1)- j; d# j2 @' r
]! o& Y$ R9 f4 A4 t( U7 N  S4 ~
end
+ L. O7 E$ ^) C1 b* t3 G! x
& }0 ~) k5 U2 Z9 @) eto update-credibility-list$ y3 t. I1 W6 Y" |4 ]
let i 00 |2 V: c( ?6 h" ^" ?& ~" e
while[i < people]8 c" U0 Z; \# r4 N2 p
[
5 c; Q: ]0 E8 W4 }" E  `let j 0
( t1 K& n4 I. M  Ilet note 0
/ O6 s* C5 y4 Y$ m: Z9 R* F5 z8 Tlet k 0
* J9 A* `; t& |' O9 Y' b, J5 Q;;
计作出过评价的邻居节点的数目" B: T; }4 s- s/ ]1 m4 X" t* R
while[j < people]
/ r. t2 q: ?/ _7 L# J" U9 w[
! x* n+ G7 u/ B" Z0 y- C" z2 f8 o: lif (item j( [credibility] of turtle (i + 1)) != -1)
  G' i  g" l- P8 r6 a;;
判断是否给本turtle的评价质量做出过评价的节点
9 Y  t# }+ r' }8 Q[set note (note + item j ([credibility]of turtle (i + 1)))
2 Q1 ^) V; O, v;;*(exp (-(people - 2)))/(people - 2))]
, u9 ]0 \- R# B9 B
set k (k + 1), P% M5 e: z/ V9 N
]
) n; h- J, x  |set j (j + 1)
2 o. J0 h$ A7 x, r& T% u/ q]
! ~) T: c8 i2 O7 Z" B7 jset note (note *(exp (- (1 / k)))/ k)
4 B- I4 J" D4 F0 L7 j6 Hset credibility-list (replace-item i credibility-list note)
! E' m8 ]  _* z  w7 o2 }set i (i + 1)% S+ C+ O  D) R
]* A3 E" W: `1 E* m" |" d5 v
end
$ w& t# T: d& p: \, a( K3 ~$ h3 |  z$ C0 {- d
to update-global-reputation-list
, p/ r: h2 C7 q8 T% s& alet j 06 E! P$ T/ [6 d! z1 N; C
while[j < people]! U" V2 x4 x6 q
[. q: N# `" e6 @* y! J8 L+ O1 S
let new 0
8 s! o5 y8 o; k' O3 I, K;;
暂存新的一个全局声誉
  d- l+ `! W% S. Glet i 0+ o/ s  ]1 l0 J" C
let sum-money 0
- T9 a) z% Q7 D9 M4 n- elet credibility-money 0
5 N6 |5 W7 u4 qwhile [i < people]
8 r( x. U* O% d8 H1 C[
4 s" r/ Z( m5 q* lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); t* n7 a. R5 e1 x2 [1 `. s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 A/ F4 ~$ b5 b) f: K6 H! ]* Cset i (i + 1)
" H& n  a9 t3 L+ o: ~8 H/ c$ p]
! |) ^! O4 b: `3 \) _, ]let k 08 |" h  U# ?  T# U2 x# \
let new1 0
7 T1 y, E3 @) L$ u, gwhile [k < people]
+ `) M1 O( o" C5 V# S[
- b# h) _0 o- F! lset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
: k( s# U- ]8 q' j7 Iset k (k + 1)
/ N! Q* v, q, J: ?1 V/ p]$ d! d; ]; w( E: g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   G* l2 }# G. o. q7 l2 A
set global-reputation-list (replace-item j global-reputation-list new)) z  W, o3 c# b  ^" b" n3 {
set j (j + 1)5 _7 f6 |8 w( R: N0 B
]1 d- N/ `8 W) ?; S3 _
end
7 h5 G+ L& T8 X5 s+ Y
) s" [6 \" V( d! h: I* x- v! V
- I$ o5 ~1 C5 X- |; f5 l% J/ _' |9 E! x; a- [7 {5 V* j4 u
to get-color) U6 r/ ]2 Y4 [5 e  L
# u0 ~+ Z. r( A  k; Q
set color blue

0 L% [9 I2 U# \6 Gend  j1 a7 ]3 z0 C- l0 ~( A- }- n
. B& R$ u9 q/ w. p6 B8 C+ x9 }
to poll-class9 g/ s2 V/ {% h) N6 L
end
8 r! x& a# c3 r7 f
2 P/ b  |- o3 f) Xto setup-plot1  \) B( P; r- ~" d, S2 |7 X( \

; i1 K- j. |6 d' l2 @( }" K- Kset-current-plot "Trends-of-Local-reputation"

+ O. Y( a& L+ j9 x* P6 h  _$ g
" d0 r1 q: a  ?# sset-plot-x-range 0 xmax
3 ]9 |- h9 |1 F! f/ H& _
& m) a2 ~& Z6 s& l7 @! h
set-plot-y-range 0.0 ymax
& b1 K9 g+ p2 S# {8 e$ T  O. h
end
8 d) @# f. z8 R5 G
0 u  k  X) Y  @  A  _1 ]- Rto setup-plot2$ a- D, A. m$ J) o& q! a
* D+ G- t+ `3 \( Q+ M
set-current-plot "Trends-of-global-reputation"

4 v7 n: J) k+ x+ p& K
: e4 a$ p) K) }* p9 S0 v6 {set-plot-x-range 0 xmax
; F- x7 a" F5 ^6 p. S

6 j3 o! C4 F: ~set-plot-y-range 0.0 ymax
% g8 b9 g8 p- Q. E! j
end
6 f6 Z2 B1 D$ j5 B4 n! o9 i9 P
3 d5 q% I' t; I5 a" g1 fto setup-plot3
  m8 Z- `; G9 H( \! K& N, }0 x2 w2 H5 A9 S! {
set-current-plot "Trends-of-credibility"
4 a. p- p( h9 O  p# N+ q9 E. X

, m8 b8 r% ?2 R& c2 X' w/ X" Kset-plot-x-range 0 xmax

' t% l( E* {* K! q3 F3 H9 v- o; A' |* X- q+ P
set-plot-y-range 0.0 ymax
: p1 Y/ N0 w' `4 l+ B+ [
end4 X( d% [6 H- p  `0 J
3 N6 t$ h( i2 ~& u4 o- P. }
to do-plots# J* k" w$ {9 h; j) \
set-current-plot "Trends-of-Local-reputation"# d& m5 `) K7 D6 @- }; u6 u
set-current-plot-pen "Honest service". ?) j. ]' N4 ~6 B' D4 Z. o( q  w
end* l7 n5 b% O# T- k0 p  ^# b; U4 q

: U: s! K; F8 t- x  ]' b[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.8 ?7 `9 i0 S. f# J# l

# y& K: S: x$ V. p2 d2 p; D1 B0 s% m这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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