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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:3 D& r# z0 C/ D& D$ Z3 ]
to do-business
- E9 B& E* o: [& t$ E6 K- \ rt random 360
  G) C) g8 z: y fd 1
8 R5 K6 y/ H' _. u" d ifelse(other turtles-here != nobody)[
1 E9 e/ l! O. b, Y& T+ M! k! r   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.# C% ^+ a: A- N) |* C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! w+ k* Z+ I& A5 W5 j
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 z% J5 J. T' c' T
   set [trade-record-one-len] of self length [trade-record-one] of self
5 R( I; ~! {. X& \  k" V3 A) w/ r   set trade-record-current( list (timer) (random money-upper-limit))1 w0 H+ @4 X- `0 {. j
5 A! @5 c& b" n# a
问题的提示如下:0 q  ?% L( f* e4 t- U$ e3 {
0 D) D' P. W+ X; h
error while turtle 50 running OF in procedure DO-BUSINESS
7 r# p4 E; {& F" g: c6 P1 `" U  called by procedure GO4 x( V9 M1 }0 L3 p) A  d1 r" r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.: G' g" _3 f9 w# ~1 Z" o5 b, j
(halted running of go)( T+ q8 \' y' D0 R0 n+ n

/ M5 Q( O: m6 x7 Y- c" W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~~. w) R8 B2 H( I/ S& y: |
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
3 ~" h7 p0 |. j# V: Eglobals[
7 \) R! e# M% m! z! \xmax
! d8 Y/ L7 ?/ [9 h6 n: |0 Jymax0 G9 ~! S1 u( A7 w4 |' B
global-reputation-list
, T5 `1 A8 r$ J
% L3 d& ?: _2 P+ [, K+ A/ E;;
每一个turtle的全局声誉都存在此LIST
; \- Q( {) f1 ?  \9 }# L) ~2 t3 Scredibility-list
7 A1 b' A+ N9 J7 n  _( j;;
每一个turtle的评价可信度
7 |% ~0 o& H% ^. p! B. p6 {honest-service
6 X, Q0 Q6 i, g$ v( w1 Z& A- Yunhonest-service
( X/ k7 T) W0 [/ B  A/ Eoscillation
3 o* ]. {, Z& e% `, Irand-dynamic
2 n$ z2 {2 x/ c& I]; |# u  W% {! u" z9 X3 _0 y

8 n/ v; G" s8 j+ Fturtles-own[7 s- ]3 G/ Q+ [9 p3 d: {2 N; ]
trade-record-all
! @& v- _- }) b. @8 y+ k;;a list of lists,
trade-record-one组成
6 s( {( S3 z6 U! [trade-record-one# D5 o' j, z$ H; I& J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ _$ q! X& \" T6 b4 M. B: w# d
/ u' p6 j3 k# S' P" 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]]+ B  o1 d9 c8 l1 m5 h
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]5 |9 `: R: q2 I6 e: G3 K- _
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' U) ?7 Q* M) e% V+ s+ B( M  X! K8 R
neighbor-total0 S1 G/ K( |+ d
;;
记录该turtle的邻居节点的数目2 U: d$ c6 E' |' u9 M" }) Q
trade-time
) j& M9 f" u) C5 L3 Y  ^;;
当前发生交易的turtle的交易时间7 \/ n; _. @; g+ g7 `. X8 t
appraise-give
. P/ r8 v0 ~5 Y1 Y; ^5 a# c- o;;
当前发生交易时给出的评价
  s8 f7 r% ~) I* |8 x+ H, b3 bappraise-receive
% W8 h) S4 {# W( _( r2 Z+ T8 F; ]1 h;;
当前发生交易时收到的评价2 d7 \$ V1 B& }& v' Q! [
appraise-time3 v& e+ H$ |4 V# |- P" U. w
;;
当前发生交易时的评价时间
, u- F8 K) e+ m. Q; glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 V6 \( s6 |' J" Ntrade-times-total( m+ e( _; b& b. K# s7 e' ^9 U" @- P
;;
与当前turtle的交易总次数
1 m& G+ A* I- ctrade-money-total
. M- |1 V" H% |/ Y! A3 E;;
与当前turtle的交易总金额) w# i7 V, `. `8 D
local-reputation/ B/ G* i+ k, G; h5 l- L+ z& o
global-reputation
! B% N2 P7 a! ^& [2 j+ bcredibility, O3 L% Z% i8 a! P9 ~1 x
;;
评价可信度,每次交易后都需要更新  |$ z$ C* N: [
credibility-all* x3 H+ ~4 w- [/ z" T
;;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6 Z  w6 t) y) N1 D' J

  R2 C% `( }4 p2 @5 C! k$ X4 I2 ?;;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0.5
' p8 ?& O( X$ H0 R  Vcredibility-one8 H: E7 z5 `5 u
;;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  e# C0 z0 r' G7 p- y5 u: H2 Q- G4 }
global-proportion
' N0 P0 C: `. g2 b% C5 Acustomer
% q3 T: ^9 R) O3 f; D9 mcustomer-no0 l: s3 W3 [  T3 k* z* L
trust-ok
9 K4 h7 w) `' a! g$ qtrade-record-one-len;;trade-record-one的长度
6 [, u3 I; U: w) E) J]: s, B- U. j% }6 T/ w

5 p# E* Y# o8 Z: s2 E' S3 V- ?5 e;;setup procedure
! Y5 A, g4 {) w+ g2 z! p0 e" N! Z7 `. o# X1 P' J7 S" T# b
to setup
8 r' N0 R& e8 c. Z+ h* B9 Y+ `* V
ca
* F. |7 N- c, [0 n
; R! x, @, q: S- c/ m
initialize-settings

( {% Z( @4 j9 y
6 |! ?; M, l' Y  A+ ]! F. u* Vcrt people [setup-turtles]

2 [- `3 C0 m0 [* W# Q" k# c% G& x: f' ]3 U; x: [' b
reset-timer
* {. y, L$ ~, C
8 {9 f5 j+ c0 W' ^1 t5 ^3 p2 n4 w4 w
poll-class

6 y. {4 L' a  N8 q
7 f; T, U: X. e) ^" \, y, \7 p+ [setup-plots

7 U5 G( G0 ]' u% f; ~5 L6 Y4 g, U7 x3 k, ^9 b' m
do-plots

$ G8 N4 y3 b9 d8 i3 i+ C2 S. lend( E7 k$ L! Q  s* v3 Z

3 ~: q5 j2 n# H2 F& c! Z/ s4 ~5 \/ H) ~" {to initialize-settings
- }* u6 T7 W- v: j  _( n" v- y& v$ d/ [8 i0 L; `
set global-reputation-list []

" u. G9 Y% ~  I' V( Z3 B( W" N& s  P: I$ u
set credibility-list n-values people [0.5]

% T  r% n& o4 m# l& H$ L( b/ G( C" j; E& P, ]
set honest-service 0
& i4 r$ g# Q6 K+ _4 o
% J4 j  b3 w  G" \7 V% g/ c. h1 w9 Q
set unhonest-service 0

% m! e/ m- W& Z5 p
) S/ r9 T: x- o5 Cset oscillation 0
& g3 Z; k3 s: Z/ u
  d% i4 B: G' A3 S. b; u& }' M# C& `
set rand-dynamic 0
. z& x1 p6 r8 y! r+ Q
end' Q4 `: J2 e" O0 h6 A  K
: A  o& X( A* q9 N; _, N( h
to setup-turtles
6 J& M3 V# x5 }- hset shape "person"% Y4 {) o; \* v3 q4 j( ]$ Q, y
setxy random-xcor random-ycor& t8 H% X7 S3 X- y7 v
set trade-record-one []7 f3 [+ P- z% T5 [9 Y3 G* L: y
* n) s& N* i" }& D
set trade-record-all n-values people [(list (? + 1) 0 0)]
$ h2 q  x: o$ u- R1 l3 |
6 B# q# A/ z+ [- u$ h; g# `/ R4 b
set trade-record-current []6 ~; g; @" l' M
set credibility-receive []. [! A# B, t: {7 K. c
set local-reputation 0.5
0 }7 A! h8 J% @+ j5 mset neighbor-total 02 M/ c( j- B1 p. J7 K9 m
set trade-times-total 0# w$ \/ W3 u/ [2 E1 b
set trade-money-total 0
) _& Q/ w5 A2 T0 C! ?$ A% L6 l( Y4 {% Wset customer nobody
8 F4 y. k/ a' p5 _1 N7 Hset credibility-all n-values people [creat-credibility]
8 g' a! Q7 C& yset credibility n-values people [-1]
, {2 ^' X' o& e: C- w* Cget-color/ c$ R0 l+ N& k4 F
6 o/ H6 c; o3 n2 z- Z$ k
end
$ J7 j& f6 Y7 Y, |, C
* s7 p7 y# H$ pto-report creat-credibility
! y+ I- E6 A& C/ E9 g3 Hreport n-values people [0.5]. n3 h/ p0 M, M5 q5 J
end4 I. `4 R- v  i) l

: N' ~& e) [9 ~3 k4 K0 fto setup-plots
9 |1 R: g3 q& [* T* f
7 ?* P7 i: @4 s; R9 E  aset xmax 30

9 b+ g# T4 o! l* i, @( ]2 ]* R
" {  ]) \# V: |& aset ymax 1.0
4 V, T, O8 n* f2 s( p
: E  F* F( Y, v+ `- n
clear-all-plots
: [) H, X, Z, g+ }1 J" g, |
% X" Z. X8 A$ i; `+ d% A
setup-plot1

8 ^( ?- C1 m: S2 p8 B$ f1 \
0 W7 x2 c5 b9 n& I% I) F$ E% {+ r- zsetup-plot2

: f8 Z  t4 @1 u0 Q7 m2 C) {2 ^5 d. C3 U$ ]* _% e& P  [# l
setup-plot3

( Y& i6 [0 |( F# o( E. k$ Dend
9 Y( b( t, W: h3 U. k6 O7 y$ [  ~) `" w4 A! |! l3 O5 B: C
;;run time procedures
# A0 C# k$ R7 t% `$ _5 A$ z# r: |
' T4 }" _) N6 i7 _: Q+ K4 ?# Tto go
( s1 D/ J. K7 S! g8 o4 N! k! I, M! h. U; ?& Z
ask turtles [do-business]

% r- W1 J( e$ |' `2 ]: x. @end
) k& W) ~) P$ M
7 {, W- @2 L) t: ]8 U, U7 |8 qto do-business
7 x( D3 _) d: h. ?1 c1 T# I
! k. g% @7 y; R2 D+ s

) P- X0 n4 y, I9 r+ `- brt random 360

! L5 j3 |0 k9 u- f
, [- m& p6 f) y: E; D% Qfd 1
$ Y" N. }1 r3 e1 f" [# s) k
8 ~3 v- v8 A# H& a
ifelse(other turtles-here != nobody)[

: m2 t. C4 v6 {' H3 T8 j9 w9 n) t6 W- c7 ^  N7 y* G% C! L
set customer one-of other turtles-here
- \; n4 E) Z/ a0 z) c- {
5 m3 ?! f$ _1 R6 j% M
;; set [customer] of customer myself
. o1 m$ `% x' L0 u
2 E/ O  ^7 {0 I1 D# G
set [trade-record-one] of self item (([who] of customer) - 1)$ K4 H/ Q6 {! ]# _9 [' @! C
[trade-record-all]of self# y+ w( l# a6 R( A; m1 j  _5 Q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* t% [% ^( w% Q2 Z& ^( W& Y8 C5 Z' n  n1 {
set [trade-record-one] of customer item (([who] of self) - 1)) c( L; @; n  p/ Z* |% I
[trade-record-all]of customer
/ ]& q& |) F0 w9 Q. w' e  R6 O

# U. ?/ X3 y( t7 M6 i( |set [trade-record-one-len] of self length [trade-record-one] of self
# x; O' ?# Q* U0 H4 M" ?& F

7 c* Y# Q, W5 J1 xset trade-record-current( list (timer) (random money-upper-limit))

; w6 P7 L" `. ^+ p# a: x5 z
" C7 O$ X  j0 l7 K4 K& l3 T" p7 bask self [do-trust]$ e, \# [) d: |, M* Y. X* d
;;
先求ij的信任度
) c- M; H& z0 U" Y( ?! _/ g& s% _: [  c, s6 j4 ~: h7 A
if ([trust-ok] of self)' D+ @7 k$ ?; {* X  |$ p- S
;;
根据ij的信任度来决定是否与j进行交易[
  S! s/ u9 ]2 R! F; iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 B7 o3 \7 F( [% J5 v+ o, x! B

5 Q3 |5 s( h+ E. T/ O9 ^; D[

' F3 V, x, J2 h( ?
8 A$ T- e' X, a2 w: O+ {3 ndo-trade
: I3 L$ p" N. U! T# l
* l. S9 @% x& p2 n; y6 ~( \) q
update-credibility-ijl
/ s5 [) p- u8 u4 V% Q1 a
2 Q5 J" }  l+ L8 b: k
update-credibility-list7 x3 c7 `% s: q% {: X

( Y+ h8 E0 b! o( \" Q1 v
# `" d& {% N/ X. l) D8 Rupdate-global-reputation-list

4 p- b* t/ z3 J( b& y1 [  [+ q6 Q2 x" ?# v
poll-class
% @, \) {: r( G# e$ ]

# c+ z/ e& L9 J9 jget-color
2 y; W+ D* K2 T. i. M: O' _! K. ?

- ?, Q/ O' I2 s4 i. w7 O]]
, \0 Q; ?3 x+ J3 k5 L: p3 d# [
1 _* P0 l3 P# F0 E# I;;
如果所得的信任度满足条件,则进行交易
  ^/ X! ~5 A5 N! R. ?# W
4 v0 W  z: |/ ^8 B[

% ]& \6 G/ s# x) q
" T/ `& I. g, m; {5 ^. Crt random 360

* g/ K' W) w$ @$ J" s( l3 y: ^, N1 u8 K
fd 1

& D& @& g( B5 _. y
- I  u* L8 y; l" L7 ?2 ~]
/ j; l* A* Y8 h# U1 v4 x! H

, P6 P8 i7 G$ P: eend

$ F/ E% m1 b8 S% b! b
+ \, p5 G& H, {. g2 L$ nto do-trust
: w$ N$ @: ~+ g# k: Gset trust-ok False& G% y4 {, Q; F2 Z( m
, [0 _# H5 o% ~8 d: j
$ l& T: ], a5 t4 n/ D" P+ l
let max-trade-times 0
0 |2 a% b- Z% y. Y' Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' s" U. p, \4 _" E5 ?0 }" n  q
let max-trade-money 0
+ ^1 |" R  f  b! lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 i* i+ z+ {; G  ^6 D9 w# Clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 {! R9 N5 _9 c! G; q% x" M5 i; T$ m, n5 S% p/ w

* b+ K9 R4 i3 ?- i% ^+ @# nget-global-proportion8 R- F9 C! h% S) k( j- t- a4 c
let trust-value" k" L1 X6 a% r) J* {) ^0 W
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)

% Y0 s# \. {' Z) h/ Mif(trust-value > trade-trust-value)
) T. O, I4 c4 }5 D+ n" d) b[set trust-ok true]$ P6 e3 x: a2 J+ T
end
* k/ `9 W2 U8 F) V+ n/ \
* V1 J4 u- O- P+ ]! `8 O# ito get-global-proportion& y+ i0 J" g# O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; l7 u# Z3 q3 D[set global-proportion 0]
% S/ q6 Q% z3 K4 w[let i 00 [3 O0 o" ?0 {% j7 p- e. g# u
let sum-money 0
0 f3 V! N! b# F7 ^while[ i < people]
, B7 {, R$ l) s[
9 D" r8 f; S; c; Jif( length (item i
$ T9 E7 \/ ~7 E+ w. j! I[trade-record-all] of customer) > 3 )

$ ]/ c( h" d' T! v- W$ A[; g/ G* `8 M6 l0 |+ i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ W5 \9 c' z* W- j]) ~  Z7 ^: x1 D8 ~% B6 g
]8 C# A, o- h  }. v% I  O8 d7 @3 h
let j 0& T$ ^- y! G6 f3 b9 Z5 M
let note 0' _/ V* F9 C# ]
while[ j < people]
) h" n" a% O4 q) B  W+ `[3 o/ p# Q  O' o. J% V9 z( O7 f3 U
if( length (item i
2 X- E, U2 b0 F5 ?. o; E8 L. u[trade-record-all] of customer) > 3 )
2 n# R& E  x+ \0 f3 \4 B9 [
[5 d1 h$ E4 o# ?1 F1 J
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ U* ^, q1 U7 O  J( c* 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 y& D+ v  f; \# m+ y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ F+ t5 V2 c& I# Q]# x% R4 L: n3 m7 D( l
]! P+ f: j% n0 B/ e) X7 i7 q) b
set global-proportion note
& n. x% T. `0 {7 E' w( M]
' @8 E$ c; r( t* P% jend- L: ]! d+ a1 q9 j8 t

! M; \  i+ e: \7 G( ?- Sto do-trade
0 M% E% @5 g' K;;
这个过程实际上是给双方作出评价的过程8 r/ f! D' m7 N+ u" G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 w- ~5 W4 u4 e1 {$ F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 ~( v/ _; M5 |/ g4 W5 y7 T) ]* F& `0 iset trade-record-current lput(timer) trade-record-current) m# S5 u% ~! J# D4 R# |9 ~
;;
评价时间3 r. j9 G5 M( z( P% y4 F/ U( b4 K
ask myself [0 w, C2 {+ [6 O( S% W6 ?8 ^
update-local-reputation" G# _- [7 ^+ [* S% K
set trade-record-current lput([local-reputation] of myself) trade-record-current! r) x5 Q7 G0 R" e
], p% r% P( `# G& {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ ^, k; K- ]" l$ \7 @1 ~& W;;
将此次交易的记录加入到trade-record-one
0 M( \! T6 d4 d3 d, x' kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ e  Z! u" s* J$ ~
let note (item 2 trade-record-current )
- H, o% e9 T8 b3 X5 Eset trade-record-current/ B" S% @) X) c* Z
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ ]- c; C, Q& r, \set trade-record-current
: i  t0 r9 c# ?! Z) ]7 }  o* X(replace-item 3 trade-record-current note)
1 j. s1 I/ x" E) L+ P
* p* i& ?4 w, {6 }' w9 D
, U( L- K8 `1 K' D# }9 C# T
ask customer [
* j. O* r! I1 I' vupdate-local-reputation7 {4 k1 G' p8 o! N1 L
set trade-record-current
4 ?% e: F; p) f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ O, \' P) h+ l$ F. b* d4 S$ ]]
# D& v9 N4 v  z, I
6 J7 M9 M/ T2 U- h5 \
9 R( Q# r! K3 B& B8 H( C  `) @/ E
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* E6 K4 O: z5 Q2 D: `
: _1 k0 _6 S: A: Y" |1 c: r! j
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* S% `0 a" X9 Y. P& b1 S. ?;;
将此次交易的记录加入到customertrade-record-all
1 u+ ?! v8 p' _# V: qend7 z7 H6 V' E# I% U8 J

7 a% J: \+ C* l, k6 s! B0 l/ ato update-local-reputation  g" s: q0 j% E5 M( y$ h
set [trade-record-one-len] of myself length [trade-record-one] of myself; i7 {- O% N( d0 _
: K; e; k4 V+ V) Z

; k4 I" U; H( x! m% m: L) r2 |2 u;;if [trade-record-one-len] of myself > 3

2 |' W; Y7 b+ a; d' H# Supdate-neighbor-total/ r4 y. C+ C# Z+ H1 G
;;
更新邻居节点的数目,在此进行% p9 h! e! V8 l) E8 d  U6 ^* Y" {6 u
let i 3, \( @; a$ X, c1 c' `$ P
let sum-time 0
0 W! N( I. B& s% }while[i < [trade-record-one-len] of myself]" ^1 Z9 J" [3 s' |. ~, \5 v# ]
[
+ w( u' e2 {' M, Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 ~& t' h" f# R0 [6 c2 U9 N+ }
set i
. @! k1 ~8 `* x3 F+ ]; U+ W( i + 1)
/ g+ {) E  ]0 [# L& V. s* m. W
]
- w: Q& r* T6 Clet j 3
# z( C, T. f) D! T( llet sum-money 07 t' y3 s2 l4 ], {, Q8 |+ g
while[j < [trade-record-one-len] of myself]6 |) N8 M0 o- q$ h0 R' J' B
[1 P" Q' w1 q& t9 g# `5 d
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)
6 `& z* p1 ?# s3 f! \  yset j
# r! g2 o. O1 O+ c# Q0 x: D7 a( j + 1)

/ C# w% h# V& D- T8 T3 E/ n]
- q. G( T" i) Klet k 32 Q9 Z, Q" t* A# C  P9 B6 |
let power 0
/ i/ E& o2 H  g5 o* M5 ]$ A5 P' glet local 0/ @" h$ T( ~* Q  @" n
while [k <[trade-record-one-len] of myself]3 i* Q/ [  }9 z: g. u- b: p0 J  j, e
[) h6 f4 [; W! W1 K/ d
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)
" D. R6 U8 @& N+ g$ q( g5 Qset k (k + 1)
! G! s) V' `& E2 Z) X8 w]7 k* R3 g& m: [; n  `
set [local-reputation] of myself (local)% B. {- f' m% N& k# ?/ B
end
+ B' Q8 U; i  {1 Y1 g6 T/ u/ X' T/ f( ]# h; M
to update-neighbor-total
# [; E% S, m# `! t7 p% T3 i5 j9 I( k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& d% \8 k: q; J
/ [# J" W% \7 x2 O( b+ t4 {2 J
- p) H" p8 n+ ?" V  Z! {
end/ I- G0 N7 }$ b( W9 ^- }
8 f% i! l5 I9 E$ t7 \
to update-credibility-ijl 1 w. a, @! o+ \# e' M

7 T/ P) n" k2 ~;;
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。5 E) |6 k7 n- r3 U' f# E
let l 0
2 v7 V/ @7 T& [* L/ zwhile[ l < people ]
2 ]9 V  G$ Y6 o3 \* r' h6 I;;
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
& b$ w( j+ M# n$ B- y[
; R" ^- U- b* b) B4 nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) n' r: i( ^: z+ d
if (trade-record-one-j-l-len > 3): v/ t# R/ }% M+ \7 x1 j! t: x; Z
[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
$ t  t* [' f, V- dlet i 3
: s. Z7 @+ ^6 V( O" mlet sum-time 05 h3 D9 H1 s/ p  }
while[i < trade-record-one-len]
/ k  c8 c; N; e7 R: o[
+ s* ^. S+ v( A% n# D2 o  i' Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) k7 v2 v) d: D6 h5 G8 Q
set i
( i. i5 r0 p% e* d( i + 1)
6 H6 }/ Z, G  I5 y2 u
]
: B5 }2 u7 ^0 {let credibility-i-j-l 05 f9 E+ b" ?! n0 w% v
;;i
评价(jjl的评价)
& Z  M  A- O. }let j 3
& F2 a* Z. m2 ]! plet k 4$ Z' m7 y1 H' g4 y6 N$ w1 j# P
while[j < trade-record-one-len]4 R9 O+ y1 B, w7 ^' j$ V, c% o
[0 v' o# P/ }5 i4 @# Y/ `" p
while [((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- a- x$ X8 Oset 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); Q6 x8 d, R# C. ^% ~6 o  z0 M" v
set j
% s1 v' q0 g, M( b6 @' T; ]" C- W, X( j + 1)

. k# R9 d# R7 x# w0 |, c: R& R: ]]
2 |" V& s- c7 \6 l" J# L* cset [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 u' \4 n" Y+ \0 h
6 I8 C3 i8 b: R( b: C$ g
. d& u: }4 o7 y$ U4 k) [
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 e  n/ T0 `. H
;;
及时更新il的评价质量的评价
( Y" |. ^$ A# ~6 p0 \, P& Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 e) K0 F+ L4 b! d0 dset l (l + 1)6 j+ F$ _3 r* A# R% ]2 O# [- H
]
; G1 z+ G- F5 A* bend9 r5 j% C0 P( Y4 F2 o

7 S1 K" {; t+ D2 ]7 j6 tto update-credibility-list1 `% [7 x/ @8 k, q
let i 0
/ u- [$ O, e+ w4 vwhile[i < people]
' u2 M: T! d5 P8 S- v0 m# B6 r  x[, ~1 ^- O) N0 u$ U4 ?4 b% p9 N
let j 0
2 e# [# ?4 V5 u9 p5 d$ ]1 Clet note 0
0 O9 l- [8 i4 _% ]. }1 ylet k 0+ L6 x. k! I3 X; _: \
;;
计作出过评价的邻居节点的数目
; p& h, c5 L: X/ Y) S0 F0 hwhile[j < people]
3 h" x; y. `  O# n[: [" ]/ x. `$ G1 i$ a! O! l
if (item j( [credibility] of turtle (i + 1)) != -1)
8 a* S  x; a. u0 c3 t  p7 }! w' C;;
判断是否给本turtle的评价质量做出过评价的节点2 t3 `, F$ K. k: i$ P
[set note (note + item j ([credibility]of turtle (i + 1)))
8 K0 S/ V* h# [. ^% N;;*(exp (-(people - 2)))/(people - 2))]

$ y6 p9 Y& p% Y& c. h4 z& d% a8 |set k (k + 1)4 T; S8 e% G; B1 }! w' ]6 h2 p  c2 }
]
; }0 O7 \/ ]# Z9 {) d4 xset j (j + 1)
: [$ u3 |# X8 @) l( q]
. T* [4 {4 I8 A6 P0 Rset note (note *(exp (- (1 / k)))/ k)% Y2 W5 h9 j) N1 F- R
set credibility-list (replace-item i credibility-list note)
( p" a" e$ {  Z6 H& G, Yset i (i + 1)4 j/ x8 j7 ?! w0 L
]/ z% U" I) a) G. S! v3 |
end' m; u+ b. D! i2 n4 E+ K8 `

7 }' u  ^  p* \to update-global-reputation-list/ T6 {  z6 K5 Y% T. V. I
let j 00 \  [8 O3 f) t  B# X
while[j < people]9 W) A% i. a7 N' p  E
[; ~: z1 z4 p% O2 F1 j4 D3 I
let new 0
4 [+ e4 C/ Z; D5 O' P5 ]3 U  x: p;;
暂存新的一个全局声誉
. L& u' m0 f* zlet i 06 X) O5 Z6 d9 f2 ]: \* k! i% s! O
let sum-money 0
1 B6 y7 |( p4 ]let credibility-money 05 O+ z' @- F9 n. h/ ]6 w1 ~8 T
while [i < people]2 ~: g  [! m/ H0 j7 q. g
[) ~2 X9 `+ N+ U4 ^3 @: H, x' F
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  E  I. U; S! R; U4 x) P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) s/ n) F* j! o: d$ k
set i (i + 1)
) T7 `+ K$ `  {5 ?) G. P' H% C]+ O$ `+ i" G7 X: E# B; c2 Z9 ^4 g
let k 0
: b/ S1 p$ t9 F# [! T# g' I. b9 blet new1 0
5 t% p; U7 Z5 g2 \) G( G4 R0 ~while [k < people]4 I9 V3 a, r, r1 `* y( j
[3 G# A5 h4 s) G: U; j: W
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)
3 V: r2 e8 F/ t7 r: Q/ X  v1 a# Kset k (k + 1)8 N) t7 |, k( R  S0 v& h# j- @# R! N
]9 |1 O1 v6 v( v0 T2 _; C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 r+ C* j7 w& Q
set global-reputation-list (replace-item j global-reputation-list new)) N% K/ j# I7 ]/ P+ ^1 i) [) D
set j (j + 1)7 p3 i: M; `( ~4 t
]8 n4 k! N- \) l$ K8 n
end
, {! o& l4 L- ~! W6 h7 Z: Z) u# y9 K5 d* K

0 D4 X  `2 Y- g0 c+ M- s  k( I4 X+ f
to get-color+ l) y- m4 L7 W; J# X
, d) a: |# u! N9 e
set color blue
5 ]/ ^6 X9 i* U% P+ d$ a9 U
end
" _% x! C  v5 t( F/ U
+ K! r0 C6 x( h4 z) j7 k$ K: n' ito poll-class
$ _1 b# h" R& f$ _* D7 v' ]end
  G" s; h% \/ x; r! ]; \( o7 d9 u8 A: x/ c
to setup-plot10 U+ `# W7 V& f+ S3 O( T! ~

2 j1 A- o# P5 L/ Gset-current-plot "Trends-of-Local-reputation"

) R2 S+ W/ M2 b: x, |( X1 ]' K# }: a+ P8 c+ H3 f
set-plot-x-range 0 xmax

) x5 S1 r4 n5 s% f
7 k% @! @" F: X5 I! b. Hset-plot-y-range 0.0 ymax
& M. F: B" X9 p+ D
end
5 N, _/ u% Y% A% U6 n, D# @  O0 S% I
8 @) L3 n4 k' E- U9 Yto setup-plot23 r# a- P  `$ k$ {. c* p
9 u$ C3 b0 @1 R7 I; ]! a( G9 s
set-current-plot "Trends-of-global-reputation"

( D. x" ]4 ~' S) G3 {: ?; r% ?  G, p3 ]  n1 X
set-plot-x-range 0 xmax
0 v+ K" J& C6 u( ~* h

8 Q: F% j. {: f5 zset-plot-y-range 0.0 ymax

& j( _5 B! _  ^( z0 Oend0 |* Z; t+ b  K& \. Q) t

% }/ k9 C; d: f! w' kto setup-plot33 u- K3 S# Y% v% g5 K

9 ?" _/ z& b1 L7 }+ R+ x! x( ^+ \, tset-current-plot "Trends-of-credibility"

5 f' w  B# m" [% R9 H: v( \3 {/ o* i# T+ a! H
set-plot-x-range 0 xmax
2 g2 H" C2 _8 i5 o
* K/ t: K1 R# a
set-plot-y-range 0.0 ymax
8 i! i0 c7 W& }2 ]* l% Z
end
% e, \/ O% N/ _. l* ~/ S* q; S' G* K5 a# {& b3 B3 x( ~
to do-plots4 u. I  n3 O5 c% u$ R( ^- d
set-current-plot "Trends-of-Local-reputation"
+ }' O7 n( V. z) o9 p  Mset-current-plot-pen "Honest service"
7 X5 Q, M$ K4 ?& r; I! {end
: Z8 F2 o- p/ |3 I) `
& m- F  C4 A4 A. n; L$ 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.
3 F; W0 |+ B9 `6 E9 j* r( V! S) G# R
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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