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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:8 `9 N2 A9 P! Z- q
to do-business
4 Y( J. z" C3 k3 Q8 F7 J rt random 360
: A' Q) C6 f7 [0 K fd 1. e9 h7 F) a# T) f1 b% G
ifelse(other turtles-here != nobody)[
5 B" k: o, c) ^% ^# _   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.% P8 j  a* M$ ?/ @
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 b: {1 q8 `7 \8 S& t* @9 S% `8 w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" g% @/ a# o. Z7 y- U% a* z# G$ w0 Q   set [trade-record-one-len] of self length [trade-record-one] of self
) i8 K' L; x: h" G   set trade-record-current( list (timer) (random money-upper-limit))
4 G' ^: P4 p' Q. {+ U. U
  T5 ^* l8 z3 y8 s问题的提示如下:5 ]( G4 a7 n1 o; z7 D! s
) d( C/ ~0 S) E: s/ x
error while turtle 50 running OF in procedure DO-BUSINESS
4 @; r8 L$ j/ S" q2 R+ z; j- s  called by procedure GO7 R5 A9 j( t  c- X( I. N" _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 R* P+ {$ S; h& V5 M
(halted running of go)
7 B4 A& `- V3 z1 g# h/ A4 X1 O  ~* ?' {- S. W* v# K3 r
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~~9 y" l$ K3 X" W# P
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
; d( l/ k+ _7 Y) f& o$ Vglobals[
1 g5 e$ Y" z$ A) F& s/ M( z: Z) G; R/ Kxmax# E2 a- p# T0 J: J. W# {" q
ymax
3 {+ h( c2 {" Y+ ~global-reputation-list
4 x! m; R1 ~, c5 b! O9 I# U- d; K9 \% L: u
;;
每一个turtle的全局声誉都存在此LIST2 j4 r# \! l7 F9 q; g6 ~
credibility-list
0 |4 x- E6 X+ ]% t6 u6 _  b9 I2 e;;
每一个turtle的评价可信度% ]$ g6 s, ^) g1 V
honest-service# h+ _" i  y/ j7 F4 d8 ]
unhonest-service
, S! Z0 L( o0 O/ ]8 ~4 ~oscillation5 ]: p6 i/ c! u6 |
rand-dynamic* T) n. y0 G# ~* F% r5 h
]
; f  t% p; T" F4 a* r2 x9 l" _" r4 \
turtles-own[
6 S; P- ?( ?+ [( c8 i4 Wtrade-record-all
0 k' L8 f3 p! \- }  ]* ~;;a list of lists,
trade-record-one组成  ~! R1 y" Z7 d! B4 k" o  e& t5 w
trade-record-one
( y- b% m/ v6 v6 K0 r0 x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; |. o' o! m+ E! p4 z/ B1 C
& ~/ `  V+ V' H9 _( ^
;;[
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]]8 {" \" I7 o, f0 M# f2 O, k
trade-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]
( B. V  D1 @3 Vcredibility-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list9 l/ z" |: e0 N; `
neighbor-total, x0 Y3 Z' A3 Y, C+ ?" K2 ~
;;
记录该turtle的邻居节点的数目& v1 u6 o, ]; H! }- K* j# B- Y  A
trade-time7 q3 I" M) S/ J, v" J
;;
当前发生交易的turtle的交易时间
5 g' O9 q- ?6 R7 U) Eappraise-give/ B; i9 |* c, K9 ?3 _/ M' D
;;
当前发生交易时给出的评价2 M4 P- p7 h/ t
appraise-receive( x, A9 A8 J& h3 N, [
;;
当前发生交易时收到的评价& Z9 ^: h- c7 X  g
appraise-time+ L4 \7 q* J/ E" w: S3 k
;;
当前发生交易时的评价时间
' }3 A* o. c7 Q! {" e5 hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
% X1 e- I% w( mtrade-times-total
  J6 ^7 M9 s+ j) p;;
与当前turtle的交易总次数( y+ d3 e- |+ |/ T9 t8 q4 @/ x! A
trade-money-total( n8 I8 Z% S9 y6 n3 i' A
;;
与当前turtle的交易总金额6 e8 H% N; j& D, I" Q9 U$ a
local-reputation
) q, O& X! ^0 L: z5 Aglobal-reputation5 y" D7 |6 ^/ d) J/ Z
credibility
* }" t) G4 s4 p# I& X;;
评价可信度,每次交易后都需要更新
# g! }  q% Z) H: F: A/ j$ [credibility-all4 n9 l+ g, P" r: h+ A& g# z9 D
;;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
; K! Z1 U$ \5 l! }
3 |8 n% @; {( v" T7 R;;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0.54 A9 W9 Z- _0 N7 ^
credibility-one
* V: S) {% c; d6 u" [2 s;;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
0 c! X, g' O4 Q0 lglobal-proportion
0 }( U  b$ I4 [6 g* [- Ocustomer
/ p) Y9 ^; b5 `* ~customer-no8 ]5 w' P% Y" q
trust-ok
# X- Q6 Z, |7 T' v4 atrade-record-one-len;;trade-record-one的长度" w( D! `* U9 O4 R8 F8 v
]
" P/ N5 L# E" A6 |  J% ]6 M: L& Y! |2 A  g
;;setup procedure7 O# N7 N8 Q) v. h# `
) R' ~7 `0 h, }, P: `3 d- d
to setup
% a3 @: I8 m( G# ?: U  A5 D7 O+ t: D7 x
ca
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initialize-settings

9 i1 z7 }& Z5 k' S# a
, N' W' A4 }5 N- M' l, Kcrt people [setup-turtles]

* h5 B8 F" O' A7 L; J: _" T8 \: I$ K; Q# I, O; s$ |" k9 o3 a" u: X
reset-timer

" ?/ p9 K, C% Q1 p9 d+ o4 B! P. {4 d/ m1 t" _  K% s  M$ I
poll-class
  |, N( `5 t. A! E1 u7 `
2 F$ Z0 Y: }8 M) b% }" e; s0 i
setup-plots
: L* B: j6 i9 X1 c4 W0 J3 x

1 Q! _8 E5 U$ O' g6 \* G% d1 |do-plots
; j- d  {; M5 ?' g
end
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to initialize-settings
0 X0 v0 }2 e4 i8 \" y3 V/ t4 I5 L% }3 D7 z. T6 [
set global-reputation-list []
( R" a  G5 {0 |& A5 F1 P  B

$ Y% L% e% |7 A* g% R/ I' sset credibility-list n-values people [0.5]

$ `2 o$ ?% S* B* u9 g* \
6 S' L5 K$ n% Q2 q* T4 u  h$ Pset honest-service 0

$ Z2 _* I' _, r* t
$ b% p$ g* g& d8 e' q( K" k# {. bset unhonest-service 0
6 U0 K' Y+ @$ |9 [- l

9 |# O+ l! D& F' {; E; l7 Lset oscillation 0
3 s4 S% B1 n3 |- v0 Z

9 l3 J. O; Z, q( ]set rand-dynamic 0

! d  d/ J" Z6 x+ ^- J+ v/ B  u/ ?8 qend
+ g/ Q$ d! {; Z+ d9 I1 ]( c
* J6 g% K+ ~+ ~7 T& Jto setup-turtles
* x5 ], A$ z0 p  M! }' B. [set shape "person") z. }  N' u' R& {: @
setxy random-xcor random-ycor6 i" I+ L2 G- J, V0 Q$ Q' L; r% h
set trade-record-one []
3 ?/ v' ?# d/ @9 f2 [6 E5 {
: K# b. j  \, K3 Y
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 v* }; V% u2 K, }! n
- E: z9 G8 R# g3 t
set trade-record-current []
8 s6 R" S/ J+ H0 Z' o  qset credibility-receive []! w0 l. r7 @, U/ @. I
set local-reputation 0.5
' V& O5 n) z* w& D+ d1 D& Tset neighbor-total 0; f: N5 S$ K1 j$ a
set trade-times-total 0
% ]+ P2 j& l2 |set trade-money-total 0; u" P( ^! Q$ t9 p5 R1 t/ z
set customer nobody
# }& Z" p, s- k  z& w$ dset credibility-all n-values people [creat-credibility]
0 s7 O7 h( H, D" vset credibility n-values people [-1]
$ J3 M+ x  [0 m4 ]get-color' o0 ?! v3 Q: Q, f4 {

  O! C/ W# B0 t" v4 q9 _# Vend
; {7 J/ d% `) q# c- g1 W% o4 I& G/ F+ G7 N4 j% u- E; y
to-report creat-credibility
3 P% x, @0 |$ z% K$ ereport n-values people [0.5]
* s2 c5 D, c3 i  }5 f9 uend
+ n6 y% i# C) Z) v& |# W
' T& `1 c8 E0 ]/ @( Gto setup-plots5 v7 Y: b- A# n( `% C0 k1 u# E7 B
8 |0 z8 B( e, x- M
set xmax 30

) \$ Z1 n2 e( Y3 H- d
; {1 I- A9 Q* f7 y/ M$ @, aset ymax 1.0
  ?: t. j. O& [( T" L

2 o3 F$ ]/ j% l4 gclear-all-plots
6 d4 [1 J  A. s4 P

% Q7 E. z. w7 _, W% Jsetup-plot1
" k7 {- x6 }# k+ c/ Q4 y# y
, M4 J; |$ I" S  c) o9 Q$ U
setup-plot2

% A& `( Z$ S; b. X& J, D
& i# A0 t, U# ^/ Asetup-plot3
) x: b: P2 q6 J) z  Z2 A5 n
end1 _( v& Q. D3 W: i+ p$ ?) x4 r9 f/ y
9 s$ |; ], [& T" S
;;run time procedures( Z3 p% o% i- v' E7 j

# n: e6 O; q& q* l8 b/ z( @+ Cto go, K6 |2 k& D) H# [- e8 j

# o/ h+ Q( D% b5 kask turtles [do-business]
1 Q( P% a  k$ y+ x% N' Z
end
0 b  f  I/ u( B+ p. V' M6 _
3 P; H/ x8 z6 ^" fto do-business
/ `1 E: g0 z1 D
7 o0 j1 }! D3 Z' e% i* z0 _* ]

& J/ l- S4 q4 S% wrt random 360

9 C2 p- R6 p: x+ w. X/ ?3 K, \+ M- V& P2 `3 J" m+ @9 F; R! ?+ O
fd 1

" t6 x, u4 F0 B# E7 ~9 y
' _+ g& u, d+ K( L% qifelse(other turtles-here != nobody)[
) f, }/ v  l$ f& o/ i
# v) y4 s, X6 u3 w2 B
set customer one-of other turtles-here
2 b: \$ g6 q: A- I4 ~

" W2 b0 v$ `8 G8 ^' h;; set [customer] of customer myself
0 u' ?- D/ i! V( A# l7 v( {6 q! ?- u
4 X$ q7 z* h! [2 o
set [trade-record-one] of self item (([who] of customer) - 1)
2 w# s8 a# K0 ^* w! c9 {# E5 ~[trade-record-all]of self
, w6 }& |% N* y; j3 \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  |& R) E' q7 k. e7 T1 A; k- {0 h" e- s6 k4 f2 u
set [trade-record-one] of customer item (([who] of self) - 1)7 [& ]$ ^. ?4 @5 i6 e
[trade-record-all]of customer

1 m) W) x( S9 v- y, D% a' y: y' w9 [) {
set [trade-record-one-len] of self length [trade-record-one] of self

" J( y/ D: ^0 V' N- O
5 }7 T8 t$ g; o& ]+ `' R1 aset trade-record-current( list (timer) (random money-upper-limit))
' v8 C. _: u' E: ^2 O% s8 b: ~1 P

" [3 z' z: \0 a+ aask self [do-trust]; @9 B# }6 e4 G9 _
;;
先求ij的信任度  X3 u! t" k; A! Z( o2 d

: p( j! \1 P9 f* D9 Kif ([trust-ok] of self)
  H1 U* A% ?* v# V  d3 r& y;;
根据ij的信任度来决定是否与j进行交易[0 y- T+ j8 l1 y9 v& T8 {9 ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 U/ T) y% a: E$ B, Q/ _6 L
, A7 J# Y" I" s# r: P5 s# A[

% c3 z5 Z( ^' q, `1 Y4 |. B/ }7 D8 \: H1 m, V, t4 s
do-trade

7 P' t/ L1 o% A1 p  A( d: j% u7 X7 m& F( k( u
update-credibility-ijl

: t4 E7 z' Y; Z: h% O1 e7 q: q# I. R3 G$ o/ T3 y
update-credibility-list, Y2 S* e4 |1 G* ^3 P2 u
" {; O6 O  T' O) x- Q/ B. n

5 {4 U5 |; X4 K- H& E2 @: zupdate-global-reputation-list
! v/ C5 O, G* u  z

! z5 w9 r* I: p# f$ ipoll-class

8 A% x# f# A: S; A2 S8 Y% O2 h
/ s! f1 p% I! |% I. @2 i  s9 vget-color
8 k. `/ f" F4 P4 |9 S  W, [
& O7 E0 C' G, u, ^, M5 w
]]
/ C2 P. m0 x" @# y9 n
' ~5 {: F, B! e( `;;
如果所得的信任度满足条件,则进行交易
: o; a7 w4 V& |! x6 F2 |$ u! a2 b, \
[

  `; `7 ]+ E; j9 {5 O5 ]
& ~* V8 d5 @# T; u8 I# f! T. Grt random 360
1 h% U4 A1 @" u

# }$ N# h9 ^6 @; tfd 1
+ t- ?! ^- r9 C3 b/ w: ?' ^
" n" I4 E; ^  k- B: g
]

8 [9 w% C! j" {; B# ?6 n% T) j6 X
* T2 d1 L3 y2 y/ D% d+ Xend

* S* {  I$ h0 R2 }" \( N* L. T8 l4 b$ @
to do-trust
9 Y  k  i; G$ ]/ A  {% Rset trust-ok False
4 F; q0 Y7 k! C9 P# t3 I! N6 a
9 F# S# B  A& v* P

9 Q# l8 W2 ]5 G) Q% jlet max-trade-times 0
$ L# r0 f- h/ T5 Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 _" Y% R! z0 f% _! Y
let max-trade-money 0
4 V" v- G& d' `# {  `' A" a" I0 zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- c) W- j; v9 F) M# Z1 L
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: f; j$ w" C5 Y" p
( R5 {( R0 S  T& G6 s8 W

& M+ q9 G- t2 ]  y: {5 Q) Cget-global-proportion! S' i# n: J7 }+ h. G+ f
let trust-value( R8 J9 K1 R  V' s
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)
! ]- C2 Z/ m% t4 M+ _
if(trust-value > trade-trust-value). m% |- w) M$ F6 ?) R( @
[set trust-ok true]3 r" ?" [. d" a
end% I! l8 s) p. H& V# S4 X( i

5 v0 e: F3 v+ @* F" n" Q  i4 I" }to get-global-proportion% e. p+ r' G: I$ I; F. c
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 D2 R! z7 s% b
[set global-proportion 0]* X& d/ f( v* S  l
[let i 0
2 [" C! o! m8 a- a3 R4 U9 a: R) ~let sum-money 0
1 y3 ]& V9 }9 n3 E; Z  w( ]while[ i < people]
7 b) r6 E# V7 l) n[; ?4 n' l2 Q' c8 S
if( length (item i
! h% ^" M0 U: I, q0 ^0 Y8 j[trade-record-all] of customer) > 3 )
/ O4 O1 {! P: r4 v) a0 t* ?2 h
[' Q4 y: C6 I9 Z! n% J- a1 L+ t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( V3 l3 w. b2 v+ g. m) _# L]
: ]& v  j( B8 V. B]
. ?! E1 ]4 w! T- K3 @- N# b* Ilet j 0( C9 ?# ?; x) o9 v+ `1 K' {8 ?% E5 x
let note 02 W' S# k3 d' q% A
while[ j < people]
0 E9 y& ]% ^1 |( P[, z$ w. |/ z# O' P9 q
if( length (item i8 D* H: V7 P" G' N- Q8 ^
[trade-record-all] of customer) > 3 )

# J: }& ^! ?) P. M[' S4 q* f) \: D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 k& P, ~- F" N& I7 G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ y; Q1 E' I; }4 U' Y( n3 w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 I( I/ n% V8 a  r3 Y]) {6 D3 s* H' S% E. U
]6 s) J8 W! d7 A$ K# f
set global-proportion note
: A$ E- [0 S# P0 Z7 w]* U5 o; W1 ?# V1 u: f
end
8 B" D! ]9 u' E* m; V3 L2 K& J5 X2 n; M. ^! d
to do-trade
3 y8 p2 y7 g3 w8 l;;
这个过程实际上是给双方作出评价的过程  j% j5 n1 |3 I* @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- L% x+ Z: ^& E! o# F& Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 F/ ^6 ~1 j' j8 P! |0 O" w
set trade-record-current lput(timer) trade-record-current% r) F& ?) v2 w# Z8 @
;;
评价时间2 K! w) _  S7 [5 U
ask myself [& L4 v( C. T2 `, w: v# l
update-local-reputation" Y+ Y  \5 B- Q! r6 Z$ u
set trade-record-current lput([local-reputation] of myself) trade-record-current7 s3 e# Q, v5 m$ A  Q! r* q7 B
]
0 l9 L; \3 j3 H8 O7 u) o1 C  fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: e% R+ n4 e( ]! e7 d
;;
将此次交易的记录加入到trade-record-one! F# J  u( O1 d% {+ v$ y, U8 M$ L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 b0 o7 d* R4 t8 @# N, R2 U
let note (item 2 trade-record-current )
6 M% C* s0 u2 h9 S( v1 k7 q  }8 m  C% Oset trade-record-current
  n  A* J; P1 @7 `: p) ~(replace-item 2 trade-record-current (item 3 trade-record-current))

  J- i& A8 q; kset trade-record-current
. a2 Q% B& c$ Z1 [* o' I' ~(replace-item 3 trade-record-current note)8 ~) R; M$ n7 q* B' A4 l! \

; n) ], ~4 n7 x2 f+ T
; k8 w% L" X2 g+ V- y
ask customer [
0 g1 a, Q' V* q5 G5 p/ Gupdate-local-reputation
! B, E7 e- c  k2 C# ^set trade-record-current# o/ T5 K$ {; P+ J; T+ |6 x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" `* n  e5 w( |$ [
]* F8 d+ C4 ]& R

$ G2 T' V4 a( ^$ m/ [3 r3 n
; V5 i* m: T' H0 Z: o4 T4 v3 F" Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 M2 c5 X  _) t: ?) E& Y; N: k+ ]
- J. \. |+ r0 x: ~  Q0 Q7 g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) e" z! d8 [: T6 r. w( R  d
;;
将此次交易的记录加入到customertrade-record-all* w% D0 g- T* o
end1 t" S* U9 v0 ~: A4 N2 t9 s

( g3 `0 M  R- K; t9 wto update-local-reputation6 z  K! W8 j% G, Q( ]
set [trade-record-one-len] of myself length [trade-record-one] of myself
* E0 E% I' l5 G1 j8 f+ [$ O! X% o9 g) V9 a5 O

. S5 w# U/ V6 N5 x) z; A5 q% Z;;if [trade-record-one-len] of myself > 3
2 u1 @7 v) e" j& g, o1 ^1 L
update-neighbor-total
6 u3 P# q7 s! Y3 d;;
更新邻居节点的数目,在此进行2 m" ]: _0 o+ z7 Z
let i 3
0 k0 J3 }% E6 B% Z7 c; ^1 ]let sum-time 0# G: j2 U" U, i4 g2 |6 ?- ^
while[i < [trade-record-one-len] of myself]8 s% N; C* h. {
[7 g8 V4 Z; a% k# }& a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 W0 l' d+ [5 k- yset i9 ?7 h$ s, h9 }3 h& I
( i + 1)
( Q' V1 w7 [0 t* N% ]1 q
]
' N9 J" g( z" p* elet j 3
* A9 R5 m3 S% P1 a4 Wlet sum-money 0+ d& C0 V) F. `/ [! g, o; r
while[j < [trade-record-one-len] of myself]% B7 w1 z5 k% @
[
  h6 b* W9 ?) U) C; A( N& d3 U$ t5 B8 ]set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)4 E. p# }4 @( m. V( x4 \% |6 X% A
set j+ A& Y; U. d7 k6 c
( j + 1)
1 p. K; H( f% K2 K& J. o0 J
]# ^2 S. W6 ^! q8 Q/ D1 ^
let k 3
$ p7 Z) J$ L- k. k7 klet power 0
0 n) q0 k2 P( l- V# N8 |) Blet local 0
/ I% |5 G) q: _$ Q6 Z1 iwhile [k <[trade-record-one-len] of myself]
# P8 {3 K1 m5 \2 }$ D$ G[0 [  y: V9 H! y1 L" r
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) ' n' M" @4 T* w+ y+ w: `
set k (k + 1)0 [% C: a' w$ u* u
]0 _1 n: S  ]% b6 r% _
set [local-reputation] of myself (local)
' M9 X& T) q3 c* z& Eend- V1 Z! f6 }  Z1 c1 a3 Z! z
" r8 \9 G: Q2 W% \" P4 P8 j5 M
to update-neighbor-total7 j, M- G8 l: j5 N/ f& t0 [
3 U0 h# ]' M8 W) \4 I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 ?' c% z$ }% R
3 @5 ?6 D6 [4 g+ Y8 J' ]

; l* m- ^7 R. nend
4 z) @% Q! y8 o: d- a
& v1 m0 e. t3 A' lto update-credibility-ijl 8 H9 F: i* u8 n

7 K$ ]6 ]/ I* h2 c; s;;
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。1 ]' r$ ]& U5 w. O. n7 H: I
let l 0
6 K$ }9 r: G: x3 N( Fwhile[ l < people ]
0 F, s* A6 [4 y1 _7 b, u* m1 u;;
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
" V% N$ |( m' D7 w# q% q[
" B# g6 G4 Z4 i2 e: H+ klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- M& J% y: v$ C. d
if (trade-record-one-j-l-len > 3)% h( x2 `5 c3 v' u
[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
9 j. W7 y6 j) G& v. \- l$ r, ulet i 3' _3 e4 F& F/ X: x4 q
let sum-time 0
* J( b- {- X. M4 \3 J' V1 Owhile[i < trade-record-one-len]
- K( P) }/ |& J8 l' ^/ ^[
2 u. t9 o! f% n3 V1 K8 \9 Vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- c$ x! y$ b4 \* Z2 F7 i. W3 Sset i
; T% V: G0 d7 b2 n* b( i + 1)
) {9 X4 _1 W% G! X$ `1 R; h
]
! D2 t: N5 [/ Hlet credibility-i-j-l 0
- F0 y: g' f6 B6 Z;;i
评价(jjl的评价)
: }- p9 N5 }3 R% ~( S: Hlet j 3
$ d0 H  }" X7 A& ?/ j6 R2 Plet k 46 N  {4 t  T( c
while[j < trade-record-one-len]- Q" H4 ^; b% \) O
[
& i* N" u% w" l& ]# {+ G1 Vwhile [((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& U  Z- _% j5 s7 D
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)
+ c$ h( O& H4 V) j+ k9 iset j* C% ~: q* I' w" y
( j + 1)
" I  a; p7 ^' V2 O0 d6 x' j
]
/ V( v$ Q4 P& h# C4 G0 x/ W/ @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 ))
2 A! k" Q  T6 q4 d- O
7 Q1 @! [& b" A. c) m
" T4 A; K. {# T* h# ~, R7 M6 U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): b2 d  ^8 m) T' U, y$ L  U
;;
及时更新il的评价质量的评价: ~( P" _) j+ h9 P
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" u9 ^" Q" ~6 O* n) L* R8 y& G
set l (l + 1)) |$ |7 M5 {5 g4 e5 p4 C
]& @  b/ _5 O/ [' g; g5 K4 T
end) Y7 n2 s8 P7 q

# d% V1 k  t% p5 @$ `' X: _; [to update-credibility-list
) K0 k0 W) k8 z+ F) ?$ r9 zlet i 0- V* a) X" a# O
while[i < people]
! j$ e3 g& v* ]5 O) |3 E4 Y[
9 k* X& L/ w1 B2 J& |& q( f( I- H4 }let j 0
# s2 V. _: W: n! i. slet note 0
# i8 R2 n8 i. N/ F( M6 Ulet k 0
* @" l& M0 k8 K: M;;
计作出过评价的邻居节点的数目
' d. ], @' n" M$ s! v: ^2 nwhile[j < people]! K, O! c3 I- N+ v
[
( H6 [; T. G3 R6 P7 e8 \if (item j( [credibility] of turtle (i + 1)) != -1)
$ X5 Y( m3 j% [' X8 T" q;;
判断是否给本turtle的评价质量做出过评价的节点/ }' t2 i& ^* `# C! ?1 y, W, m
[set note (note + item j ([credibility]of turtle (i + 1)))) H, \, b# T) K$ \* k9 |
;;*(exp (-(people - 2)))/(people - 2))]
" A! r( [1 c6 ~0 B
set k (k + 1)
# \4 n6 P$ P! x- M/ \3 c" t]5 b( F# s0 a- j. }
set j (j + 1)8 ^6 w) Z. f; W4 r( I
]
; Q' H( u/ G8 ?2 x) f# _set note (note *(exp (- (1 / k)))/ k)# y! {3 M  I3 M% m4 i, M& A# Z
set credibility-list (replace-item i credibility-list note)
0 ~$ T$ h, a* O, E  eset i (i + 1); {' G* t' E3 N/ a7 |2 P  V
]: k+ `- i6 T% s4 B6 j
end  a8 }6 }* e' q% u
8 V* y& m# \; }% y  O
to update-global-reputation-list$ }9 A7 ^' N& B7 x% `8 l
let j 0( G; Z+ I/ D; m0 p, I& q1 S0 ?
while[j < people]: n' P3 }* y( v% T3 I6 W% s4 C
[# Q5 V3 ~, g) T
let new 0! L9 Z* F! p) n8 m1 I
;;
暂存新的一个全局声誉" q- m2 j. g: r
let i 03 Y/ k6 y+ F7 W' z
let sum-money 0
% \& w! K" y* Q/ Y8 }let credibility-money 0
) U' _% N4 D3 Xwhile [i < people]6 ^/ F$ Q1 i8 [& q& z
[
4 }1 I& N2 Q* ^  }: h- H+ J8 \) eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): s0 Z. k7 U- s& k  X3 {9 R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" h  I# H7 k$ ]3 R9 j0 u+ w: Z0 [set i (i + 1)
$ @  S/ c. |* U: J9 X]
( ?- n, U( ]  ~  flet k 06 J7 r5 L8 h2 |
let new1 0# A  b1 \7 P/ }) L) Y
while [k < people]- Y) P5 e0 L8 M1 r5 F
[
; E. L  n$ q' Z+ ?( S, ~. n4 cset 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)) b- u- x  M+ f7 l6 m+ B) }+ v/ \
set k (k + 1)
# J1 @, w0 X' W9 b' N' z]# z) M  _- ?9 {0 ^- |1 |: B
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ b9 J# X3 \' B+ ~! q, u
set global-reputation-list (replace-item j global-reputation-list new)
4 O8 J% c' a7 {/ d- [$ \/ kset j (j + 1)
* {4 \$ Y$ Y6 x7 W6 H]- H8 \$ k  [: r9 S& X9 T+ V
end
2 T. C. c5 F! N( P( X/ Z, a. ~' W- R" S- h6 t( n- ^

) d2 k# l* V" E' i
% K/ |/ N1 z# C, G1 t# @to get-color
  l: J# C' x& a& J  q, F, Z2 {; S7 M, _
set color blue
# {) G1 D+ e1 G/ d' L+ y
end5 a) x+ K/ f) `- T0 c" @
* p2 m; i2 ?, ~1 o+ h+ E
to poll-class
" s/ w# ^# w" N  O* @6 wend
" s2 S/ W$ Q( ^. H' P0 W, T* p6 ^' I. l# Z' f3 \
to setup-plot1
. E, ?7 P  h! l; `1 P, O8 H. r( s3 M& O8 v  X
set-current-plot "Trends-of-Local-reputation"
% a2 ]  {" H# d- S+ @2 D- S
+ E6 `  T+ D* g: ]) \& B" P; i
set-plot-x-range 0 xmax

2 U1 D1 @+ Z; k: j3 c4 h- a) q3 i. s
* u! H2 {0 L3 ?1 v2 u) F1 s4 B. }* Oset-plot-y-range 0.0 ymax
& n/ m5 E2 K1 t% {3 {
end/ y9 T5 N  l* [: p2 s

8 E: D$ Y% z; Y" t0 |to setup-plot26 ~; J2 A( f+ \: J( X

$ P7 P) s6 `) _+ fset-current-plot "Trends-of-global-reputation"
. S5 e( `0 h5 d8 J6 t3 X

6 ?) e9 Y* W9 u3 zset-plot-x-range 0 xmax
$ T0 n6 M9 G& p% ]- x  O
) N9 z0 h# P# A9 G$ Y
set-plot-y-range 0.0 ymax

( f0 o* |8 L0 ]( Z. K8 R9 l+ Gend2 z) d" ~, ?+ G7 V7 Z6 G8 N
  y, ]9 d6 H% S4 l- G
to setup-plot3
6 `7 |  F7 a, p9 B
. O8 D1 ^3 _. c/ ^( @* A( ^set-current-plot "Trends-of-credibility"

  I" ?" S+ D4 F. [: J
0 Q" d7 W/ e+ E' P; wset-plot-x-range 0 xmax
2 ]2 p& u; C: b  g

" h' H/ e/ Q2 d$ r* s/ H2 ]* j9 P! Zset-plot-y-range 0.0 ymax
2 b8 a1 `9 z. K$ K8 B' S5 Q8 K7 v+ O
end/ C) c) f/ D' ~. _

" n& i. a# c1 b: N$ S; }, m: D: X& M3 sto do-plots! x; O( B4 P; c! n3 v. @% f# r
set-current-plot "Trends-of-Local-reputation"
6 z/ P* E) d0 Y8 d7 Xset-current-plot-pen "Honest service"
! \! _8 e5 ]+ P5 K3 `7 Zend
$ n, l0 O3 c" z4 D/ z9 D( G8 E. |' G! u* s
[ 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.
+ p. g# g, {; I, \8 D9 Z$ `
/ M' f  N% t7 @3 W! ?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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