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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:
! H2 s/ z2 P0 e$ ~/ m1 j$ n) cto do-business
0 K# n' s. _3 y3 X  m  L rt random 3606 O6 u' g% P' X" j0 V! B+ K
fd 16 g" j, [: b8 b! _. n- A( b5 _3 q
ifelse(other turtles-here != nobody)[+ m4 n+ C  F5 D7 h0 _
   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.
) l/ \) Q9 k' `: ^" _* _. y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) g5 Y2 I6 J. ?. V% `+ D6 E2 Y  q2 j9 F
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; w' U: F5 L2 V" N' ]' m   set [trade-record-one-len] of self length [trade-record-one] of self; ~- L, k  r/ G0 Z5 m  f* J
   set trade-record-current( list (timer) (random money-upper-limit))0 [) K) \4 B  q) K1 S9 L2 v9 i
: A. r0 L( X& s$ x/ _
问题的提示如下:
: a6 q' Y! I) ]  @. J* z0 A
8 X2 \3 `$ c: u4 F: a8 m; nerror while turtle 50 running OF in procedure DO-BUSINESS' h+ A. L; l+ _# v# M5 U: h
  called by procedure GO
5 @5 J( c, g8 r1 F6 G: e1 cOF expected input to be a turtle agentset or turtle but got NOBODY instead.3 s: {0 a' f5 ?, a
(halted running of go); o# l; S) a4 _' B, t7 \4 }) E
5 s! ^+ V2 ]; ^0 i( ~4 ]' p
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~~7 A) j6 o  e# @4 m
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
+ u8 z9 c3 C6 y, M: o8 `7 @: Dglobals[
6 v& u5 [. Y6 D3 gxmax4 t3 ]$ n" q7 }
ymax7 g! I4 ~# q2 u8 ^
global-reputation-list( }# O1 o6 B* P+ {4 N- t. T
% [% Q6 t' s( V
;;
每一个turtle的全局声誉都存在此LIST) N& L5 {1 S( [6 G
credibility-list
! ?5 Q3 n; I/ m/ p7 [- q;;
每一个turtle的评价可信度4 V, ~0 E) ^* X) k3 ^
honest-service
/ H$ Y) L5 L1 s4 r  M% C, R! iunhonest-service
- `# K# t) w3 |" u7 i: Boscillation2 t/ }$ a: ^9 M1 @; e% [1 m
rand-dynamic
$ Y: }' U% d$ Y]
- q! A& G+ _( a& C  H
1 {4 j5 a! ^4 ?% y) @: i% r' @9 Mturtles-own[
" K" h8 e. q0 F5 g9 e6 m- ?trade-record-all4 W9 j% ~  V# n1 O: z- p& |
;;a list of lists,
trade-record-one组成5 c2 d. Q' f3 d1 `1 y6 I
trade-record-one8 w7 \3 E8 d) N  S. k, W" C
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 Z; _9 g4 d3 F' S  d5 t1 G* k6 a' T  B+ O& M
;;[
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]]
" E  ?. R! z. \' M" k& a5 xtrade-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]6 X  P: g- e% E$ y5 h: E- ^
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list
+ |: J1 t9 c) n. p" N- wneighbor-total6 A# M  v( a- x
;;
记录该turtle的邻居节点的数目, |, L. Q! G% h3 b) @
trade-time
5 }! ~( `4 e8 y) {;;
当前发生交易的turtle的交易时间
) `! I7 r& Y7 Xappraise-give2 `1 Q' F6 Q' U! M$ E( P
;;
当前发生交易时给出的评价
' H8 X' N9 L, W3 P! ~! Wappraise-receive
- [0 s4 F/ X% C, |3 |. s;;
当前发生交易时收到的评价
) p7 G! t0 ~: R& F" \: Kappraise-time
! ?, b; j, ?+ E1 h( K+ ]# Y;;
当前发生交易时的评价时间
" a" z- x/ I& q% f% d& klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: |% |* H- {/ A' `$ R! n: d9 K* Ttrade-times-total
/ n7 p' v' k$ W" I;;
与当前turtle的交易总次数/ R  u+ h# j1 Z2 t; R0 v0 s( E! a
trade-money-total# _0 \! C* i  W
;;
与当前turtle的交易总金额9 c9 p# j2 m, a
local-reputation2 |# `- I; _0 n, \* L
global-reputation
8 H8 A  z4 x+ N0 {! @credibility
! a! |" q3 Q  a( P; E0 U;;
评价可信度,每次交易后都需要更新
! V4 e; t: O6 w& ucredibility-all
# N4 I0 \: q2 E1 u6 [- Y;;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
4 |9 U. z+ ]  h; a3 Z8 P
6 G' N2 E6 g. i/ C& S;;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0.55 Z8 ^' C; u" g3 H/ ^4 ^
credibility-one, R& K* R( E% C+ V" F$ @" ^/ T
;;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 ^6 w: S3 v2 O& kglobal-proportion
/ c* m( N& e4 B+ Y: wcustomer! E, S! _! ^: C+ N; |  l6 g/ {# O
customer-no* A" ^3 E; h. o5 p
trust-ok
$ q! c1 k. {9 ^) H) H) ctrade-record-one-len;;trade-record-one的长度
6 t# R( B& G0 o+ \& b; |]
; f  F# _0 x3 Y; @. v8 E& p% U, O. g0 d9 v! T; |9 T3 D5 n
;;setup procedure
( S- Z5 p1 V1 t3 m( f! `. L  ~+ \5 r
to setup
8 X3 n& u+ z0 x/ C* F" h
3 J5 |6 N* l& e  a. [# u  _' X; ?ca
+ n. ]8 Q* |3 ?) a* D# g. K

0 Q! n0 d' z6 W: Binitialize-settings

, G9 c7 ?7 j+ [0 e' b
! W0 w! J! \: [crt people [setup-turtles]

5 x1 r$ d! }3 T9 t- c0 g! Y4 z6 p1 O8 p
reset-timer

' m. [* k' @- V0 U4 |# }: m+ e1 W" o& t
poll-class
# K+ g8 y- U" t
+ w! Y$ Z7 c" m+ W, O) r( H( ]: d
setup-plots

6 X8 i% x$ }+ J; X  m. e7 u5 u) R, g0 Y7 ^
do-plots
  S& y, i! i: g( S) @4 `- f; U
end
4 Q# L- I* B8 Z  @. y6 b  S; o
6 i) r6 g6 D& X! Sto initialize-settings. M/ }: ^- ^9 I

' n+ ^  p6 G, Sset global-reputation-list []

* T8 K: ^/ c+ \# c5 B
7 c& Q9 ]  d3 h* Zset credibility-list n-values people [0.5]
  I5 b0 U. B% {/ p
+ [  o0 ]0 x8 b7 D& P
set honest-service 0
. R* l1 L: Z! h. U. k4 \1 o
4 q; |, v5 K5 W1 ~& M( p2 A" G4 {
set unhonest-service 0

3 R2 T+ z( m5 L6 h8 p7 ~% T& }0 J. T! v% I# z
set oscillation 0

3 O; F2 x/ q# L; c  }
$ L. m  l8 S/ b7 R8 N5 tset rand-dynamic 0
3 V0 z% i- V# t  P/ m
end6 y: r6 x8 H/ a: X
7 q! F6 q0 a2 g2 ]' B  h% b
to setup-turtles
6 a& R% s% t, Y* O% y% M1 c) P4 Gset shape "person"
& x9 P/ w1 s+ }! qsetxy random-xcor random-ycor5 {( M% k3 t! C4 g$ V
set trade-record-one []
2 A0 B! A9 P+ M9 H  h0 z) [
$ ~& s) y$ l. u8 n
set trade-record-all n-values people [(list (? + 1) 0 0)]
, l- v" {0 _6 [2 `& n3 }

+ f  I+ C7 x% k$ e" h: V5 Cset trade-record-current []8 B; v  }  X$ U% Z$ R
set credibility-receive []* g2 B7 R/ @9 P3 R
set local-reputation 0.5
! L' t7 ~1 A2 vset neighbor-total 0
5 P' J4 G/ K1 C; S. t/ tset trade-times-total 0- _2 A7 @) Z6 ?5 s
set trade-money-total 0( J1 }" I# K. f* K
set customer nobody) ?) u( F' x! H5 V# n2 M( Y0 c- |
set credibility-all n-values people [creat-credibility]# Z# x! ^1 {0 K7 _# g5 s
set credibility n-values people [-1]+ b3 H! |9 }+ R- E8 E
get-color
, p" q/ p! c* q; j6 X

4 ]1 M7 C; ^8 V2 Zend
: V2 O* o5 F" j) R# F
3 [4 y/ t3 ^0 C5 P" Xto-report creat-credibility* s: M7 x% @/ {9 L- q$ V
report n-values people [0.5]
$ k/ T6 Q* r4 s1 j7 {. f) H% Jend1 k5 N6 h% _( x( r5 l
: ^6 ]& l% |6 S  j/ E1 V( ], o5 X
to setup-plots
# J+ K, Y( S" _( _  p
/ Z  c% E  h/ u( T9 ^4 C3 q6 S% u0 zset xmax 30

5 B3 s3 i9 K1 k" O# Z9 M
8 o3 Q3 W+ w& I4 P! q8 uset ymax 1.0

2 @0 \  d5 b* N
, }7 V& M/ X9 [* _- ?3 cclear-all-plots
1 Y5 L. i2 Y# w9 e# A

8 J* M: X: ^& y  k6 |. Zsetup-plot1

0 v( g3 d7 y6 z, R7 L" v
  X0 y! p9 Y' Xsetup-plot2

5 c) M% s+ [# w: e0 \0 I3 Y" A7 k# c5 n, O5 F/ F
setup-plot3
7 ?( e  {* L" V% ~
end
# Q0 _3 t1 V. V
/ _$ m" i5 n* R. W! ];;run time procedures' ~" ]0 }7 }$ T6 z
# P# p) R, j% ?& J& u, ^5 a
to go& p/ f* Q% q: M6 l
+ {5 k2 @6 z: f2 `4 g  f
ask turtles [do-business]

3 ?# w5 P/ Q  w2 G# K2 nend
: L" g5 s5 i  T- c8 ^  ^* k: `5 s7 r9 C' }  k7 e- e* C
to do-business 4 R* X6 z- \* H4 N, I% W, _5 H+ A

7 |9 Q9 z+ j* \* F2 s
4 b% J; u5 w5 s* ~5 H& h; e6 Urt random 360

5 l: I1 P* k* O- r* k
' I7 @) D4 }/ d+ @fd 1

# s2 W9 v9 b/ a# I( v' x9 u  B( ?+ K/ O! y
ifelse(other turtles-here != nobody)[
& U! }; U# L. k* U# p  ^, I4 j
% O( A# t+ I: j2 z# s5 t9 v
set customer one-of other turtles-here
- P: n; r! |. ~2 c/ O

, G# a% i: W! H* r;; set [customer] of customer myself
" A- ]$ x9 T9 o) O8 p  T) J, @; o

9 Z' h) e! L" x2 l) `& rset [trade-record-one] of self item (([who] of customer) - 1)1 O2 Q8 F/ C6 U
[trade-record-all]of self
* e7 P) n  |7 [+ J/ Y3 ]$ w$ _;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' G0 U' `+ v" }- v, q
5 l1 @3 M7 P9 Q
set [trade-record-one] of customer item (([who] of self) - 1)
( m; l7 `( G- w% x[trade-record-all]of customer

4 u) _& n3 n/ G6 y5 l$ a
. t  _0 t3 ^! _9 T3 Tset [trade-record-one-len] of self length [trade-record-one] of self

& D& S- t4 }/ a1 x2 g- |
% m2 S$ M' t. C3 |) X2 Cset trade-record-current( list (timer) (random money-upper-limit))
* O+ _7 `% q1 D/ b& V
/ ?/ r1 X( h0 ?5 W0 X" Y. w- U
ask self [do-trust]
# j- r1 k* ?$ ~  V* y  h  q;;
先求ij的信任度) @) `; r; `! R0 }
) b6 t/ B. n; L
if ([trust-ok] of self)8 @) r. A1 `' P+ U; K0 I2 s
;;
根据ij的信任度来决定是否与j进行交易[2 G. v" J( L2 V. e9 t/ e
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& F4 x8 A6 D" S" b( ~

+ S2 k8 S7 o) f( T2 R! X[

! F0 Q* {$ P1 T, ]0 H- i+ _0 U8 o7 M* L+ L, O  K$ f& \) q
do-trade
  E7 ^8 g, k8 u

8 ?" i+ p; ~: Z# v- m6 ]' Pupdate-credibility-ijl

" P5 [, }" m9 o& T+ p
$ h( S% N0 b: C# \update-credibility-list
$ U) K. V6 E  F  ?$ o) S
  P0 S; u3 y; z% A) b
' N. H: ?) B: ]+ D# E; |
update-global-reputation-list
6 }. P- C  t3 G6 C9 |2 e; `
! q0 }- p$ Z/ R' `' A
poll-class

4 C2 i  _( f) C& I0 C
. K5 O" R9 d" @. N, P+ y. |( R9 eget-color

9 v  X4 `& i0 K6 B3 M9 r0 H9 S
* l: l  ^4 S. j: `7 Q4 \]]/ @2 h1 Q+ O. B- {

5 Q7 b" ]2 D' N! i1 X4 H, t9 Z;;
如果所得的信任度满足条件,则进行交易1 D" r+ D: o( ?# C
3 R2 U0 X! ?! }7 ~# @
[
9 X6 a) g" Q0 c% D  V- w# U/ J
3 b) M3 X  g1 a6 @( _
rt random 360

6 G4 S$ u1 ^9 ]: ]- x+ U7 f' ^& C' ?2 o& |; g  W
fd 1

( e7 L; G$ e  @. i% k1 A# p6 d+ F$ B" \- G- B( T$ x
]
6 }) k2 C# A7 E; H' H- P8 J

, w7 t4 J* V( p3 M' ]end
* B; x, u6 y5 v  k' E4 o6 S. ~

. l5 W. l, m9 b* Rto do-trust - v2 B! N, L4 k8 A
set trust-ok False
+ X& Z4 z+ i: r6 }3 R) I+ i/ Q; R  E7 C7 f' g5 ~* G$ P7 n; d0 U- Z- V
$ \) M  f* C3 }; B5 @. s: n- ~
let max-trade-times 0
' P) w# E3 K, u: N! z5 ~foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 a! B. P  U$ L6 K) V2 p  Ulet max-trade-money 0
, l: M, Z5 o; M3 A% {$ M( f3 G$ ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& U( {4 x: B1 k( _0 Jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' |( b+ M( r$ \$ ^) W9 W5 a$ C$ c% B$ l9 H% j% A* g% \1 w

5 f9 X( t$ q6 n  c  N, g4 a8 C9 [get-global-proportion. p0 Q, y. W' o
let trust-value5 ^* k1 y1 Y. _  T
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# j/ Q- E  I: \2 t/ {+ b$ Y$ _- wif(trust-value > trade-trust-value)5 i5 L% o0 R* i; \, x4 ^% z% ~6 s
[set trust-ok true]2 ?3 ^) Y6 i8 `
end7 ~) v# Q7 Z. Q& R/ P- O6 ]
- V+ |" ]' f; P( y* r+ {4 B
to get-global-proportion5 E# P) F- B4 H4 ~6 S8 w6 w& @, E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! T  ^$ r* F; Y+ M/ n3 b8 f. y5 N
[set global-proportion 0], }0 K3 c# q1 V" j% D
[let i 06 _* l3 j- U  ^' L
let sum-money 0
% w9 l: U6 N4 _6 f6 K0 Kwhile[ i < people]
; P+ @5 G6 W2 }; C( A- N[
& Y$ a# m- h. Q9 {if( length (item i
; c3 V$ h  q# w% J3 P. k3 i[trade-record-all] of customer) > 3 )
- o+ J  V; I# h7 v9 _# s: ~' |5 ~
[% c% m' M6 w1 S. j* C( _! r+ j5 a
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 ?1 t! e' g6 }# E$ R]* s5 k7 N( i2 @6 ]" x
]
& S/ H" O3 T6 n6 Z( h* W3 |let j 0( T& I* f) E0 N7 j" H
let note 05 w- c* |& R1 s
while[ j < people]
; ]0 ~, D% S) q[
' X- R& x$ @9 x- f2 J+ gif( length (item i+ t: Y$ V  ]' C$ j2 J+ }4 V
[trade-record-all] of customer) > 3 )
) {' \) j8 X" t  N# {$ Y1 m& ]# l
[$ S( X: ^* j! J3 S+ u% X  Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# Q- c+ n3 i9 X8 ~* I
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 k" g8 g8 [4 H% E1 O9 |, Q) M$ I[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ I0 a5 ]6 ?* q# L% |]( j2 d8 [: }' y( \; M: t5 L$ }
]  C* {/ `: p, @5 H) C. @
set global-proportion note4 x3 J: z. M1 [" H: ?9 E4 B) C4 s
]0 h$ }& y' K: L
end
; H# d$ f. @/ {% ?& e: q  j7 j' t* `
to do-trade9 ~* x! h' |3 E# [, e
;;
这个过程实际上是给双方作出评价的过程0 h" r) K4 Q' w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 P, r+ ]0 Y/ z) D% W  F4 `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 d4 e, z% u6 p4 e  I, {+ O2 d
set trade-record-current lput(timer) trade-record-current/ ]- F) d! z0 D. h8 q  [
;;
评价时间
. W' S4 C% Y, p% m$ |! wask myself [: {' }3 x3 w( T$ U4 T* _
update-local-reputation
& P. E; F& u" D$ _6 xset trade-record-current lput([local-reputation] of myself) trade-record-current
) @) v* h) x$ Z1 G]
. a& M/ `# Q; ?( r9 y/ f# Dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ B' \5 u) Y1 ]3 \, \( a
;;
将此次交易的记录加入到trade-record-one" e" ]5 p2 N0 H* X1 D, P
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) ?7 c6 Y, r0 L' ]) m( \let note (item 2 trade-record-current )
& W: L  P$ @) O4 ~  cset trade-record-current1 S3 g9 Q# i/ _4 p; Z0 t% M9 {, w3 s" J
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 e  F: t& z% }! p
set trade-record-current1 U% |5 m6 n4 s+ B' H
(replace-item 3 trade-record-current note)9 j9 O" C# X3 d

1 ?& x4 v1 f0 @1 @/ I
" U5 U, ?' V2 a) Q  ~9 q& l
ask customer [' s; F) `" H5 M: O
update-local-reputation
/ P& D) _- S! u: l% G, xset trade-record-current2 s- {0 t8 D( c0 n1 Z' G6 L# f
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 }! h  G" _! C6 H]
/ q4 L* }8 j1 g( P, d
! f7 j; c, p" ]1 R7 ~  ?2 P
: l+ s' F. u( o; A" H
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; x) c; z# ?8 m$ n( {

- e: @9 S8 z4 i/ \, w  yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 X4 J$ s) u* C5 K# s" N7 D+ L
;;
将此次交易的记录加入到customertrade-record-all
7 e2 Y1 n; u# u, s3 D7 y0 eend* T  M5 H. k( [& p# W; T
, Y, K+ }9 E$ J
to update-local-reputation
7 L( K  K7 A& S- i3 Q+ Cset [trade-record-one-len] of myself length [trade-record-one] of myself' C1 o9 h1 B% ?! u- i) g1 K/ n

8 @2 C/ }: J; R; i* t: e  M7 ]* D8 ^  H
;;if [trade-record-one-len] of myself > 3

8 |1 C$ q8 ^3 N4 Mupdate-neighbor-total3 c" X4 }' S! N5 P) z# {2 K: ]
;;
更新邻居节点的数目,在此进行
+ [) q2 H: B! ~6 G  Llet i 3
3 w% H# v& N3 i, t. _% d: Blet sum-time 0
( `4 Y: }* T: V( d# |- R4 vwhile[i < [trade-record-one-len] of myself]7 W$ Q/ _* a& ?1 [7 Q5 U
[
! Q) j  X4 v+ W# Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). b8 V6 ~3 n2 O) o7 E: f& @8 C. ?
set i7 j) Y4 O% B4 a  u4 |$ B
( i + 1)

4 [+ ?/ B! ~6 D! S]
1 I2 E3 J  W2 F9 _/ Z0 `let j 3
1 c6 ?& `  O+ g! ?let sum-money 06 h- t' Z0 s2 @
while[j < [trade-record-one-len] of myself]
4 D- ]; h: Z9 Q4 q' O+ u[
7 _# [# @9 K. C* q3 vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
' j& a; b' _  Yset j; a% H( V. k8 W5 b! [
( j + 1)
. Y0 ^( i( J) c0 Y8 @& N4 R
]
2 c- }. y1 q3 o1 d5 G" ulet k 3
& |3 M/ v  v( d& z- ?, n4 olet power 0
$ Y1 s9 P' n) Mlet local 0" }4 H! x! o* g8 Q$ D3 i
while [k <[trade-record-one-len] of myself]
8 N9 [/ w$ G; J+ y: D1 Q[
. P4 y& }" V' i. a8 Pset 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) * ?; |! e. }% ]* l1 [& Z7 ^
set k (k + 1)( M/ |0 z2 Q  L
]8 E+ Q  x+ W1 D2 Z9 ^# S
set [local-reputation] of myself (local)  F' R7 f7 p/ i7 G, k" F
end* n: S; a! _4 ?" W; N: o$ h9 o0 t' C
4 Q* O2 _4 z! @$ s
to update-neighbor-total6 e6 {3 }: x9 O( d2 Z3 k# V
. z$ m% v" b7 h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]; a2 u( D) k4 u/ p7 S/ M0 B  b

$ _# ]% i. S4 I1 k' t

7 Z# o0 E8 A! p1 J0 S5 d! o/ gend5 e+ P/ }8 H; i9 J6 ?

1 t& d9 [  B0 V( n6 B, Q- y, Zto update-credibility-ijl 1 E; |+ @% H7 P5 S; q$ Z
7 ^0 b- c$ @  U0 b
;;
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。
: L" d7 L0 |# X: U0 Blet l 0
# Z: `! P$ i6 W9 y2 _$ Bwhile[ l < people ]
7 i; S% @0 _" @5 u4 O% y9 d;;
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
8 r/ h9 ~1 R0 O7 o+ d: f! Z8 R[  N. p3 P2 X9 [% R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 d4 @/ h% J. t' |" Lif (trade-record-one-j-l-len > 3)
$ t: u" D! k+ ~- J) N# h[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-one) o5 z6 i5 O0 n  S6 t$ l5 `
let i 3
, h( i) p0 t' {0 n$ R; q2 L* zlet sum-time 0
! v( w8 e5 |8 X4 f: H) B" G  zwhile[i < trade-record-one-len]1 A# b) E2 Y- I$ C9 y! E
[5 v$ f, o; S7 H9 i8 S8 I8 b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% G- R. e; v2 z+ Y$ Eset i0 o' V$ G1 E( A( Y
( i + 1)

- b  U& s. K( X& x( ~3 j]& T! h- W0 K' v+ y; q
let credibility-i-j-l 0
( {: Z5 x6 u* x% |& W+ k, v;;i
评价(jjl的评价)4 S) T3 x* N5 I* P" F+ w' W
let j 3
4 {4 }) I" J5 P! W! Q/ ]. \let k 4
0 f+ j& ]  d& W9 Rwhile[j < trade-record-one-len]
; w4 ^' B4 c- z* `. W8 u[
  y& z7 e3 q8 @+ cwhile [((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$ v7 o9 y! x  W3 j9 K* q8 x; N$ y
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); k, {7 g# V# H5 s; u; M; r
set j
  a! \9 P$ b7 C7 H( j + 1)

$ j- k, }- H$ @" t' K8 c" a]/ P5 R! i9 w- D2 u. b7 `
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 ))
5 }7 C4 e  a$ H# n9 ]! T0 ~$ T% M  w& p4 N6 R) ^1 U9 ]

+ x- s  m1 H! N; Z  J0 Ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 O7 B$ ~" \# U: c7 s+ D;;
及时更新il的评价质量的评价
( s6 N# e  L' ^% L7 U# k9 Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 c% w) l6 b# l# ~1 T8 y
set l (l + 1)0 ]- g, ~+ \$ [  l6 \
]! A+ s$ q7 r! k& U3 ^! F
end
# T, _% j0 X9 |5 K+ ]8 ]) T% X7 H- h6 H& g
to update-credibility-list+ \# v9 I* `- E  E. ~- y  a3 y
let i 0" p. }- A. U" h
while[i < people]
; N4 G. l7 c  }[/ s/ b" J0 b# Z# ~* M
let j 0, U( ^$ I2 y& X9 w9 ?
let note 0* c: Q9 n; N+ J4 n' z
let k 0# B5 q/ u0 m4 P/ z
;;
计作出过评价的邻居节点的数目0 P; x1 J/ g9 W' k) v) o! k; M0 U
while[j < people]4 Z! Y- c2 q+ O! v
[2 r- ]; D5 j( p! k+ t# ]/ e' T6 |
if (item j( [credibility] of turtle (i + 1)) != -1)  d$ q' B3 |" A# L: i, T9 F+ e
;;
判断是否给本turtle的评价质量做出过评价的节点
5 E* A3 \% k/ n* K; E" a9 l" d[set note (note + item j ([credibility]of turtle (i + 1)))
& i, d. Q& j! Z3 k7 p% N% b* m- g;;*(exp (-(people - 2)))/(people - 2))]

; Y( L$ r8 x) ^6 g% fset k (k + 1)+ O' F9 W% p. E+ b. o
]
; |. E/ S" q$ c% N. vset j (j + 1)
- X) i0 q. B" S3 Q2 o8 x6 t]
: S7 K1 {- U& n  Bset note (note *(exp (- (1 / k)))/ k)
7 ^& c. p! y, _: `* |3 Qset credibility-list (replace-item i credibility-list note): m5 J- m2 F" a' F, z. ~0 O, J
set i (i + 1)
6 n) H1 {& b* K3 c( B]
; ?1 Z9 P$ N: P% V8 kend
1 t# @1 {. O5 @- e% O- S; G7 \" ^9 h3 F1 O3 A. X6 a1 T' X; M# R
to update-global-reputation-list5 C+ d8 ]" H, u' K
let j 0
: w+ ]) R% z$ d: uwhile[j < people]
. b) b' |. _2 T$ ^0 `. I6 k( Y[
0 h) s' t, G, |% Flet new 0
3 O' K. c" u5 i; P% p# D;;
暂存新的一个全局声誉
+ `" G* a! J- s: [0 B3 ~/ Jlet i 0
" C; V* B) ^, \0 {' S) olet sum-money 0
/ B* l% o, {0 F1 I8 v7 blet credibility-money 0, i1 W; B9 D" l% Z0 ]# N% ?
while [i < people]
$ Q  K; l+ E: N. K: K+ d[( X, ^: ^; X' f3 o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% a4 C2 w4 _' x# Y) k% m
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), Z7 Z: ?6 }% e  ~
set i (i + 1)
9 ]! ~- V4 @1 R" A) @2 B, W( B]4 G/ B6 f1 f6 E
let k 0
6 v& D+ K9 Z& g2 U5 rlet new1 0
5 n0 G% z+ a  ]: ywhile [k < people]! g% L. u$ G9 S0 j
[
6 G; R) d) [. c6 A& @set 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)
+ T& R% A5 k6 Y- g4 Q( g8 Yset k (k + 1)
( f* B& D' s# n9 k# c7 a  X; a9 u- q]
+ R7 w: o# U( |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * p: Q; ^6 U* _& v4 F+ c
set global-reputation-list (replace-item j global-reputation-list new)% }5 S: l5 U' j
set j (j + 1)
8 [5 n7 R* B1 a0 ]]
# i) c/ C9 G, f; h. \4 cend
; d  j+ M9 ?- w/ p! F! y
2 G+ z9 a9 l, b2 s& O' r% m! o9 b! B. y; _+ a& g6 _
) J. o, _$ j* ]3 i
to get-color( C" r0 ]: x  ?; ?7 j

( ?/ a' x9 ?4 D2 e8 ~set color blue

& w" r/ l, L: a5 f# c6 B. |end$ l; R& B, }; i; I
! b( k, L& {2 j( I# S! B
to poll-class, v+ p) T. K8 l/ W" Y
end$ H% x; k* z7 d) n( C2 D
/ R3 ^) ]4 E7 i
to setup-plot1
/ m( [. }( v0 ^0 i8 K) K8 j% }! G9 e( n( [  L) U+ k* J
set-current-plot "Trends-of-Local-reputation"
7 I0 x0 j- R8 Y: R$ i

. P$ s2 p- b: j0 C+ S, rset-plot-x-range 0 xmax

6 [; m5 d/ |. H, ?
# O2 p3 P! e) L. D" z9 qset-plot-y-range 0.0 ymax

( ~9 v0 y! f3 _  j1 A. [end$ G6 |3 v. h% Q7 s. K

; X/ c/ a7 w$ A4 `7 S) Sto setup-plot2
2 n6 C7 H8 g- K) _
* K& P/ T* H" Y9 Y4 {set-current-plot "Trends-of-global-reputation"
7 F* v1 m* S0 A) |* H/ p4 _( K0 F

, D; o- }% @& @. [set-plot-x-range 0 xmax

1 ]0 U/ n. w" O0 S; T# d$ F) x: h4 h- Y# j6 ~# i
set-plot-y-range 0.0 ymax

" ^- B) q% ^* A) h. J! qend" ?. {4 ~. K4 q7 `9 W
6 O6 d8 E1 S+ q& Z) ?1 b
to setup-plot37 Y7 Z$ M; J& |0 k, ?

8 ]# i4 M1 S* Pset-current-plot "Trends-of-credibility"
( b9 g6 g7 A( p* O

& s9 N' `4 M$ Y7 W6 }3 Z! H0 O, cset-plot-x-range 0 xmax

9 d7 d" V4 Q+ {2 S+ W( H2 y
5 {3 N2 L' i! V2 gset-plot-y-range 0.0 ymax

; d7 b" {2 f1 _. u* x- ^end8 o* J) @1 G! x) j
4 ~1 w, O8 D& Y" V* I
to do-plots
+ G1 a) X  E/ r4 v0 S* z/ a0 i: {set-current-plot "Trends-of-Local-reputation"
1 f# A( G3 M8 h; Tset-current-plot-pen "Honest service"
, o1 i, x3 [3 Pend( m! V* c5 p/ V+ A: y: d7 Z+ M

" k: a% f1 i2 k1 \[ 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.
; ^' W3 f2 t: H5 a5 N3 _3 ]- n
. b0 t$ J/ Y6 e( L4 A0 E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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