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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:5 [# p% x. O& o; S; E
to do-business " Y" R3 h* m, g2 L4 l; V/ {( r
rt random 3603 R# T1 u7 R; y! S5 w9 E, S2 {
fd 1
9 e) m% m4 j5 d: a) R ifelse(other turtles-here != nobody)[% p, z1 G2 s7 ~& O2 k
   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.9 e& {6 e. H( X. V) w: m) A
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' `* {  U3 A* u# x0 _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! f% m. t8 U9 G6 g" \
   set [trade-record-one-len] of self length [trade-record-one] of self; _, l5 p* r1 Z: N2 ?9 [' ]8 }
   set trade-record-current( list (timer) (random money-upper-limit))( i( n! e2 M. I9 X3 g: g. u% ]( R

) d0 H4 J% D# o$ F/ N; T. O问题的提示如下:4 Q( `" E9 z' z9 X" C

4 o  x0 X- n$ U' {0 z) Gerror while turtle 50 running OF in procedure DO-BUSINESS
+ G( e! @2 Y; t1 f+ t  called by procedure GO
& d. |! A  J+ y# v! d2 C9 HOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ k0 a6 e  G/ M5 I1 u  [" b
(halted running of go)
% w% m+ r4 {- `+ {. k4 o" S* T' F  ^7 q+ v# c
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~~: Y( ~4 e5 U2 x5 `- _0 V. g
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+ C) }; Z  w2 m5 H( O
globals[" k( \$ h# c5 g
xmax9 I7 {4 O: f6 n% W# `1 |4 L. U
ymax
% q  e& H% M8 E6 j, w8 `8 K5 s5 Oglobal-reputation-list
0 v$ W0 v& a) V7 Z0 n
0 a) V+ ~; G3 I;;
每一个turtle的全局声誉都存在此LIST+ ]% v7 x: o: U- i
credibility-list
# v0 O# L3 c- S' ?* A0 E;;
每一个turtle的评价可信度  y3 l% ]1 M" q) g# X$ A
honest-service
) L6 n# ~2 A7 I2 L, ~unhonest-service2 V& k% V7 X- V1 |7 }- n: v+ {
oscillation1 B2 V5 x+ N! z9 v& k
rand-dynamic& _& z, Q9 x, l' n7 @* S6 v
]6 z" o1 `1 v' |: m

. S* I5 }+ ?: p3 b9 N9 pturtles-own[
; Q/ X5 F- _7 v; ~# n  f. Xtrade-record-all7 ~) s5 `: \9 e) a# w4 V
;;a list of lists,
trade-record-one组成
4 }( s7 {: n7 F6 n4 E2 e; \trade-record-one2 V# v3 L2 i# \8 v5 e
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 C2 E* M! p+ }* ]6 R, ~* j/ z3 s1 N4 T0 q# t% 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]]
/ A2 B6 O: r% Qtrade-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]
# I. u9 d; D8 bcredibility-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
* n  o3 j; P2 qneighbor-total6 k6 t- ^5 B6 I( m
;;
记录该turtle的邻居节点的数目
4 H' P, t7 A) Ftrade-time
6 t, ^; s+ H( y/ g- l;;
当前发生交易的turtle的交易时间. a( n2 v" o  ]7 r" E6 Z
appraise-give$ h* ]0 q1 C& F! {3 j- _# z
;;
当前发生交易时给出的评价
. h* n, K: ]- u3 E9 Dappraise-receive& a6 u0 v: {" J0 e1 c0 F
;;
当前发生交易时收到的评价2 {! ^8 k; ~+ P; d4 ~8 e+ r, g3 r
appraise-time
8 Z- D& X1 G; j4 k5 F) r;;
当前发生交易时的评价时间
- }, ~. ^' u7 W. h/ `$ j& C& `local-reputation-now;;此次交易后相对于对方turtle的局部声誉- N+ Y' `3 a. D4 @& ~
trade-times-total0 N7 |, a0 D3 A1 E' `) f7 {
;;
与当前turtle的交易总次数" b$ M; h; q% J
trade-money-total5 m: B3 ]' T% B" `' I9 _
;;
与当前turtle的交易总金额& j% a/ Y$ O# S' }& d
local-reputation
0 q- P- U& K% @7 l) F6 i! z2 [7 lglobal-reputation
/ ?4 N. N2 v4 H( c/ f& Qcredibility9 x8 H: b  E. i: Z! L- u
;;
评价可信度,每次交易后都需要更新! V3 j& t0 Y7 w, i
credibility-all3 R9 C. @7 R; Z6 v6 [
;;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! R* f+ k$ r0 R( Z$ ]% c% K; W
+ ~) }5 V  o  E5 T% t
;;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
9 Q3 ~' k7 D5 Z, Hcredibility-one/ C* D2 t& V# f5 p) [  M& z
;;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people1 {* P; }7 Z! R
global-proportion
) g' p& p4 F4 \& l5 fcustomer$ a* n+ a4 ?3 k+ C( _( F
customer-no3 M" I3 w% i% E# l8 n
trust-ok* S2 d0 u- ^+ s5 c$ h
trade-record-one-len;;trade-record-one的长度$ T6 W9 @( ^$ g& e' q  M
]
  H9 g: o: H. Q  @9 T7 q$ r4 s! W
3 D: B  D/ v/ L% B& j1 F' o;;setup procedure1 N" {4 F- t/ Y, ~8 U0 _
( e- D; K& g: w" m( ^' J( Y
to setup
( y4 j2 w: f4 Y+ ]2 L3 \7 s; T9 j) a5 N3 t( `5 `
ca

& Z' ^: L* O0 n  T4 s( i3 R2 R1 [4 G$ l5 b; t$ z; v: p/ c3 e  x6 q
initialize-settings
7 h0 c: x* H- t$ n6 @  b: x
- B: Y1 O% N  v9 a
crt people [setup-turtles]

9 t3 q4 B, w/ [" K+ b# U8 w+ Q" i- e! M+ p" W* S" S7 R* ]
reset-timer

1 b% D4 N1 j9 @
0 \" N5 e) t% u7 L5 D1 @poll-class

& L7 y  v. }! E' }0 n2 r$ m8 n. Y  P
: R% t) @5 l% p: p5 Y9 J$ ksetup-plots
, R, T4 C0 y7 \5 u

' B* X$ S8 n4 D0 bdo-plots

" w  U  ^3 d, j' F* ], Mend
! U2 ~% z3 Z/ u( p* O# G6 Z. O2 B1 O% Q$ U
to initialize-settings
1 ]8 B$ u7 k" I1 G0 g4 x/ C5 S$ Z. d! f
set global-reputation-list []
& t( _- O" S3 ^1 [  c
, W9 B' z2 B( ?! m
set credibility-list n-values people [0.5]

) m& _. G6 d1 C" \/ J$ g( c, _
0 e  K( Z1 S: Y3 b7 Q9 r- Oset honest-service 0

+ i( V& K: J( ^' T  g8 l! S+ }* N7 r: Y' w! J: J
set unhonest-service 0
$ k8 m" @" s$ H8 T4 y+ e8 i! @

8 @& R- B# K/ F3 cset oscillation 0
* |4 z" A9 m" L& |
6 a1 Z& O1 h9 P' A' F  d; [
set rand-dynamic 0
8 m  z+ N$ @/ `1 g
end
$ k+ v/ i6 q' K, u
$ ^, o2 R; b( S7 l, Oto setup-turtles + p% n; u# |9 F
set shape "person"
; i( q: `; G# e0 E# _2 z% }+ \4 M; n! tsetxy random-xcor random-ycor7 `  a6 P" K/ K, ^; v/ D
set trade-record-one [], F& z5 |/ D$ ^. p6 A6 O  v

9 H: f' S0 x% g6 zset trade-record-all n-values people [(list (? + 1) 0 0)]
  q9 O# w$ {. {: ?9 i3 v

! B; [0 o% D4 N/ }4 Eset trade-record-current []
& F# _/ v# `1 t$ M" _% Eset credibility-receive []- \1 I$ {  o  }4 o% V
set local-reputation 0.52 v& r& }8 H1 B# P2 F6 S
set neighbor-total 0
. T% s2 d2 }( ~set trade-times-total 0$ u+ J& ]) ]5 O- o; X8 k/ F: d
set trade-money-total 0
! c7 N& l8 @! x" e/ \set customer nobody
- ~/ h  Q/ b) yset credibility-all n-values people [creat-credibility]
/ A4 q" d% L; R! P- f7 a, }0 eset credibility n-values people [-1]
( @* j5 [6 a- D% b3 D8 v  Sget-color
- G% n; h+ m$ p% I7 X; A% H

: R* B7 s7 T5 eend
; F' b$ k0 O1 R* Z
$ n  ]" B3 i' lto-report creat-credibility
* w& l1 ], g8 D7 R$ `+ T# K& Breport n-values people [0.5]
  P% G/ Z4 R, H7 t3 r( wend/ k4 `3 O! `9 j
: e: ^  R# Z: h" ~
to setup-plots  \  N2 p/ \2 Q/ z- p% d
" o3 t- ~: `) P5 p4 V4 L+ I
set xmax 30
2 F3 W/ r: C- E- w/ a1 y# d
& Z. z# W4 W% q$ e. k. f
set ymax 1.0

2 X, H% o8 k) x7 n, v# h+ J; u' o2 R% x, d
clear-all-plots

, A3 n4 n# v" K2 E( z1 \+ L  A0 \: ^
# P# ?( ~$ ?4 R3 w3 osetup-plot1
7 i/ O, \* g4 W8 I

) [( P, Z  T8 gsetup-plot2
5 @6 r9 ^+ V3 r: q
8 S8 t: t3 p8 ?2 ^. D+ i
setup-plot3

( G& T7 f- l3 eend0 y+ f3 S7 d# w+ `

4 T4 V- r: U9 }7 A4 h  D5 N;;run time procedures0 l, O/ ?& B2 |
0 c  v; m) C# V0 N5 q, F& }
to go
4 m/ x! d' q# g# O& a, b+ m$ Y+ l- Y# X
ask turtles [do-business]

: K$ b2 q. T, g5 `- ^+ @/ G) iend
( j8 x# U- ?' E5 i8 \  z
  }  W& |9 q1 t3 y  Dto do-business
8 d; i0 N' Q9 i/ g
" y  R4 _' M, j3 M3 \) k
9 z; j( k$ H( Z
rt random 360
; |* f* F0 K8 t& k/ W; q

) A2 a, d. G8 Y" ]6 Lfd 1
, \9 M6 ^' y* W8 [$ D/ e
% R2 ]1 X5 a( h5 S. [
ifelse(other turtles-here != nobody)[
7 F5 @7 h" i" r' s1 M9 k" {

- y- s: o; E9 E: O* }: Yset customer one-of other turtles-here

; ]1 v9 f4 A, ]$ H; Y
' {$ C$ u( A0 I7 Y. x+ X" n;; set [customer] of customer myself

: E& |4 I" e3 Z/ W  \) ~: j  z9 m' G% K, @- i
set [trade-record-one] of self item (([who] of customer) - 1)
6 Q9 W0 t8 P; B" ^$ V! X; D[trade-record-all]of self
- Z3 Y7 s9 S! w3 B: H5 R8 Y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; S* {  x. q# ^
2 X8 N3 t3 g- Sset [trade-record-one] of customer item (([who] of self) - 1)2 E( z$ g0 Q% D" i9 U" N$ y+ p3 }
[trade-record-all]of customer

6 ~1 a6 T7 ~7 _& S: u. r! ?$ H+ e* }
set [trade-record-one-len] of self length [trade-record-one] of self

& k4 p7 ?2 v- I. L3 f6 _# D
* [8 ]# l' `9 l' A9 D+ o" l% iset trade-record-current( list (timer) (random money-upper-limit))
) j$ U, ]" J  N+ ]* l+ h$ _  [+ c" v

( x5 i  ~4 G) Gask self [do-trust]" ^$ d/ n% O# ?! Y7 H# T
;;
先求ij的信任度2 R# V) m" J# t8 C- c4 E+ B
6 H% m7 H3 N  `4 K6 P2 P+ V, a* B
if ([trust-ok] of self)
" Q% h/ T4 O+ o$ ^+ W) v;;
根据ij的信任度来决定是否与j进行交易[
, E5 C2 c3 `# D! i6 b0 F# F4 Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 ?9 |+ N7 h1 I
# y# A0 Y$ E- @0 y1 J# _+ O1 V
[

1 G( ?& j, {* m/ @" n. |, w; L! d  s: N) h/ k) n5 c  w
do-trade

% Y' R; b- R: I, [. T' \  K0 L8 C6 b: u  \
update-credibility-ijl

+ E$ x8 z' H- R5 e/ b
8 f0 |0 E: Q' A+ r' |update-credibility-list# {" ^# c4 w2 S: R4 J3 `+ q% B4 G, |
5 h$ I! Y; R1 d; p) e, W% U

# M( ^- }7 r8 D; dupdate-global-reputation-list
4 J. I- r) F3 l% w3 t+ [2 Y

4 J) k  m. d* f  ^0 t/ H2 H4 Qpoll-class

5 G7 c3 w' e2 b& d/ K# n
/ n0 u/ @" W( Z! ^, h: N) cget-color
, h- G* W. d# q3 i

# Y3 P! R& c% O& q/ N- i]]
( h5 k, y8 `& D9 @0 _6 H8 u7 v2 x" U7 d
;;
如果所得的信任度满足条件,则进行交易. N1 |1 K% }' A8 u
, m4 K: b# L0 r! W+ v9 ?
[

6 U5 y' l: N# O; v+ P1 a/ D; ]& p  `4 m. _+ l' `5 n
rt random 360

( h% X# }2 i! L& F4 b% p0 q; Z
! a% H: |$ U- H2 ~0 Mfd 1

7 g* G$ b7 Z4 O1 |: a  U8 d& D: H; X9 ]! Z7 C  c/ Y
]

8 m! u8 Z/ e4 C5 z& Q9 m1 q+ t3 y; S- z  Y8 _/ X2 O
end

5 v+ O* @8 ~( h: u% {3 |
5 ?  ^: e8 `& n' {( a+ \% rto do-trust
8 @& R( g. `1 |) @5 M' Mset trust-ok False
! ?6 e2 X/ z4 {4 ]# X7 v
' A/ e( R+ p+ N6 T
$ X/ t& p1 x% v0 L! `5 L7 x
let max-trade-times 0, ?6 I  r; d2 O' g) o3 Y8 j1 i
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( T# x/ i3 p/ T3 f! \0 flet max-trade-money 0
9 n! F9 i* E* R" rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% a5 U2 v; a: llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 f( A" L7 Y# Q* n! p5 f- K
& F5 @7 |  d) A! T1 d. [
4 i8 G! E) g& t  r
get-global-proportion% E" |- T- o3 w5 \( H+ t" q
let trust-value
; A( H! L) s6 mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 K& M3 q/ \! |- R0 m4 z; F
if(trust-value > trade-trust-value)% x+ D9 M6 y$ d, d. T
[set trust-ok true]
3 F* O. H0 {4 P: k# Rend: O" M3 F% p5 F! S
' X, k  k) V# H9 u: h! P, {
to get-global-proportion
5 @. y; n& l: h* y5 Zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 ^  ^, S% r8 o( ^( V3 p" z[set global-proportion 0]
9 x2 X% c* m) [- p5 }( I* Q# F1 |" i9 i[let i 0- A3 O7 s( A5 ^# y: L$ s6 J
let sum-money 0
5 Y6 ]2 o" }6 F3 Qwhile[ i < people]8 s9 i' K$ `+ _* S$ X' Y1 F- U
[1 `# u( e! h& F2 M# G) u
if( length (item i( r$ J$ f$ x( s( `* \
[trade-record-all] of customer) > 3 )
8 ^/ b0 _3 p$ D/ `
[/ z, ~2 h( B& ?7 [( l  M
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" v. `$ O# T: \( V+ P" N. e]6 y: {0 @& L; L5 r6 B
], i+ I' E0 U$ i: r! k% H% K8 S
let j 0  d7 [2 U  }% O* _/ L* `
let note 0) ^5 a& h/ t* l7 X
while[ j < people]  E/ z; k8 Q5 N  Q: Z
[
$ _: T2 J- F* d) y- S9 @0 ^if( length (item i
: U" ~3 ~, D" _4 U[trade-record-all] of customer) > 3 )
, m2 L! x6 U- K7 w5 ^; d8 q
[& A! \' u; @: m' _2 ]5 C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! O" V" G' X! \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 d( u* B' i$ S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 U; K2 `6 U+ m7 g]
9 k1 B- B2 \2 T1 L& E' Z]3 w/ j3 ~+ x# R( i5 Y
set global-proportion note$ `+ i* P% g1 j0 C, i. T8 n9 n
]0 t, ?! s4 D5 Q5 s
end6 b  @. L5 _8 g! |

: }8 r" E$ v# d$ xto do-trade
: j3 W( F# J. i  [;;
这个过程实际上是给双方作出评价的过程
1 ]+ y1 Z$ a7 y. h0 r! eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* K* Q  h4 Y/ {7 r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 L: o7 Y6 p& h0 J2 B
set trade-record-current lput(timer) trade-record-current
+ l+ ~4 p+ F# Y2 {/ ];;
评价时间
0 P# F" O; D! ^; a& \ask myself [. n& a4 m7 x) s$ g; m
update-local-reputation
3 x9 ]) l: @# g1 P. w/ @$ ?set trade-record-current lput([local-reputation] of myself) trade-record-current
. M% h# z2 V# Y( m( m]
& v8 \- X0 z. }1 p; iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 i9 G; a, n/ Z: ^5 I
;;
将此次交易的记录加入到trade-record-one1 f3 Z5 C9 ?3 n9 |% M5 G
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ Y0 B$ C  c9 j4 u& |, l
let note (item 2 trade-record-current ), P, |  Q, S5 i
set trade-record-current$ a+ I$ l8 U  j
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 a  R  [7 P* l' q
set trade-record-current
8 d, r; l& z+ K0 Y(replace-item 3 trade-record-current note)
* ?# K! m' q) J
+ W: v8 s7 X2 U& P& }/ W

6 D1 [8 m3 T9 _/ \' h# H" Pask customer [
0 G7 T. |- C$ {1 B3 A8 H# |update-local-reputation" O- V$ P9 M+ q
set trade-record-current! e9 q9 U, Q/ x) y& l
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! L8 p, h0 {2 D4 A. j. \3 r]& r) [: I- C) c1 M- k. h

3 E8 P  j/ v* U4 k
5 j! S# Q  C1 H1 u7 W+ y  i
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 x. R5 k- u" Q. F. @5 E
. e* N- F( i" T: U3 k
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 R0 p& k9 ~4 A;;
将此次交易的记录加入到customertrade-record-all
0 p  K; |2 Q& ]/ N* [end* d4 ?1 A& w8 ^7 i
& }& U5 i; O3 v$ Z) h: Y
to update-local-reputation
0 w2 k& L1 |8 y; |  r: M4 ]set [trade-record-one-len] of myself length [trade-record-one] of myself
9 [/ n$ _  W# }- j7 w
5 u, Q: `, @6 J  t& k2 c% P; s5 d# w) H, r) V+ |# d8 ^, ^" ]
;;if [trade-record-one-len] of myself > 3

  A, G4 N; D( g4 d( s% zupdate-neighbor-total4 y6 e9 |3 k/ P
;;
更新邻居节点的数目,在此进行0 J' C$ p# j$ O2 N6 k
let i 3
% W. J# s/ |- t7 x& Slet sum-time 06 k, h4 e: n+ x0 n2 p
while[i < [trade-record-one-len] of myself]
0 m1 h$ B2 E4 Q3 f+ k" _[7 v" i' g, Z+ d1 q6 e6 _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! t$ x4 O4 D, F- a5 Wset i# o9 H; T7 b* e5 p0 V
( i + 1)
: s7 _- m& b, d" t, o, L
]% X6 c% \3 h: E
let j 3+ W5 r  k  q( P6 e( _
let sum-money 0
/ g- M6 ~* k' m6 S0 _, Owhile[j < [trade-record-one-len] of myself]& C# V& S2 a2 e8 h( r# M8 F7 i; N9 N- V
[9 D- A" q# @. W$ Y$ g6 R$ @* y
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)
- h) x$ m) R4 C. Eset j$ Y7 _# k* m4 `1 o9 c+ P: ?6 p8 q4 n
( j + 1)

, M! G* K/ s, [6 u3 p, l]; x! L/ k, B! r& \3 b6 p/ @! W
let k 39 z% E) L% X' g" r, F' T
let power 0% l0 j! w& [# R5 ]. A+ k+ N
let local 0
4 ?, p1 ]( x. @% O% K2 B) [while [k <[trade-record-one-len] of myself]& E8 s6 n# z2 M: c! M
[; w  G. c. u3 `" o# u+ [
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)
2 Z7 S9 Z, F! [- e+ Bset k (k + 1)9 Q- H9 v& p' T0 L: C  i
]
  ~0 G/ U% J  m9 yset [local-reputation] of myself (local)
5 }1 f" @. T6 E. N5 F- c2 ~  X, Eend% d9 N7 {: z# y

$ M4 u0 U; N5 A, `$ u5 V6 ato update-neighbor-total2 t& V6 n8 `0 z8 V& Q+ v% x- V
; z# k9 e) T, O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ n6 [% E3 j8 A* F/ ~2 k
0 M6 y+ e# E' J/ E6 c

, X$ @6 T) G$ lend
! i9 _# d' t9 N- d) n, d# a6 o& x
to update-credibility-ijl
8 j$ m3 `8 W& Z* Q6 ]; O
- m: Y& Y8 [1 y;;
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。
0 ^+ K2 r$ M/ A6 [- y) Y# q+ Plet l 0" Z. T% C" Y5 f$ C4 i! K# K
while[ l < people ]
# I0 g5 r# }7 A8 \' W4 H;;
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4 t; c" j9 F0 w2 S
[
$ S, n5 |8 X/ S# g& w' t9 Y$ g8 alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- x7 H' K6 j. a7 u5 Q& b) S' K
if (trade-record-one-j-l-len > 3)5 W' h7 ]3 c) p2 V) ~
[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$ ?" X( }# ?& Q4 Z' R  `
let i 3+ ]" D3 M* x8 O' {' V6 M1 w2 c, x$ ?
let sum-time 0
; P! i" S* F$ T" iwhile[i < trade-record-one-len]
9 d2 l8 S( g2 Q. J' b, |2 W[/ S' q+ r5 b# X9 X9 o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: q" p  D! e' }6 o, n9 C7 v& qset i; ~, L: M5 M; P0 s  i! N
( i + 1)

4 f1 H! |- }1 l+ D1 G% |  W! W]
8 C0 h8 H* h1 p& M: [2 Elet credibility-i-j-l 02 C$ D1 ?+ P  @- h% Q
;;i
评价(jjl的评价)
* P, m: ^; r$ ~; m: {. h0 C6 glet j 3! Y; X0 q5 [1 M: y5 s
let k 49 Y3 O  a; {8 d: E! o9 p6 Q2 ~
while[j < trade-record-one-len]
8 ?  F. v1 O' Q[
5 S+ u3 o4 {; B/ u( [9 ?, ~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: |3 {5 X- f5 [4 f- p5 J
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)
1 k) P9 E/ S0 v7 ]set j% u" ?/ f& K' {) D
( j + 1)

$ q7 E+ Y. U- j]9 m0 x9 I' [0 j1 k3 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 ))6 Z$ ?* ~. g  W4 h" R
; }) O3 Z' s0 Z5 ]7 Z# g

: C6 ?9 D2 N  ?4 D* u: @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ x1 z' l. m! K
;;
及时更新il的评价质量的评价
- Q+ g4 q, X! F1 uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. y8 c: V' F+ G3 h- h
set l (l + 1)  c" j& ^- y' ~8 ^0 `! R: T4 W
]
- g. A1 O% u" u! Z5 R; a7 |end8 u6 r0 F1 K7 v' R

8 C4 q" ^2 d" tto update-credibility-list
; ?- a9 I/ K4 A& R; {1 ulet i 0
3 u3 W2 U# \1 vwhile[i < people]
* I8 o2 l" E/ k; S* O7 P+ G[2 N( w9 G# h) g6 g' \3 d
let j 0
9 s+ m8 h/ f- e" M- m- flet note 0) v  T7 G# {1 K8 O$ p0 f) B
let k 0
! X3 f) t  Q: Q;;
计作出过评价的邻居节点的数目4 _$ w2 }! x# t
while[j < people]
- G5 k& N  Z1 \- E4 M1 S/ v0 r5 _[/ ]! Z# s: l( Y. @. _% Q" Y
if (item j( [credibility] of turtle (i + 1)) != -1)* U! s  S& z, t' D2 R0 Z
;;
判断是否给本turtle的评价质量做出过评价的节点5 G/ i! Z* O$ q# ]
[set note (note + item j ([credibility]of turtle (i + 1)))6 x2 L& Y! a( g, r
;;*(exp (-(people - 2)))/(people - 2))]
; ]9 I$ ^/ b- h3 A$ f- w6 P
set k (k + 1)2 R4 _5 @6 [# l/ f
]$ k) H4 i4 r. ?" M! u; U# |) `
set j (j + 1)
; l. {3 w1 [/ y* T  }9 [8 j& b]; Y, c. P3 O. z: w' ^3 A
set note (note *(exp (- (1 / k)))/ k)
8 B4 g; k' m% w: z! nset credibility-list (replace-item i credibility-list note), ?# S) w% q% W! }
set i (i + 1)
% h9 q  t* Q$ G! j]
, ~. n1 c8 I$ T) F* p  j$ p! Yend
5 q9 }* F5 E  |9 ~: l5 J- k9 e. V# O
to update-global-reputation-list
4 x1 T. K/ C; V8 r- ^let j 0
& `# v3 v  e9 }* _" h1 |: v" xwhile[j < people]6 L2 F0 M* q7 B) ~
[* m" j$ M. S8 \
let new 0" V4 O% N0 u' ^" |  W2 T
;;
暂存新的一个全局声誉
- e; g& f; |& tlet i 0, s6 j+ J; r) p) Z: x1 p
let sum-money 0
. D$ F7 |/ q$ Elet credibility-money 05 D8 N( Z+ J3 q7 j$ x
while [i < people]. @8 @) i+ Q' O; m
[
9 k+ q8 |4 s* a  _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 e% n3 q! @; o' zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  K1 \. r" K. c) o$ qset i (i + 1)
2 [% m* C) N# K4 n]3 ~  |8 d4 @/ v3 C4 a
let k 0
) z  q0 {) t' q9 Hlet new1 0
9 m: ^0 }: {' j% R4 W3 E+ h# Owhile [k < people]
5 W- D) U, }$ ^0 D* x* F! o[
  s; \: T. v$ ~7 X; Sset 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)
$ u+ c) N) o. p0 \/ \1 [  z3 l1 tset k (k + 1)
8 E: \4 I  N% ?4 G, N5 F]3 L4 I8 H, q7 E9 c& @4 b" `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ _( e6 z5 b. k  \2 N% Iset global-reputation-list (replace-item j global-reputation-list new)
% b7 u% c7 ^( L' F$ O; q1 A; l6 Rset j (j + 1)) C* ^/ L5 v. j/ j9 S6 e6 o5 a4 j
]" i# u" H7 {3 W% T% g
end3 o( c  K2 o& l) R) |% ~( w3 i2 `  W

# v& t1 T0 v$ T, `" s( F; R* O
3 ~  L( |$ ~, f+ i
6 j6 _$ K7 A& ]to get-color! X  W7 i2 q- s0 g2 N" l% @
. B3 |1 @$ u& `# d; X9 Z
set color blue
( d% i; g" K! m
end
& h$ F/ c1 ~& W: f: D6 v8 ^& K
+ [, X! [% A. i5 g, a! r$ xto poll-class
$ ?0 B4 J, ?  V7 kend
, ^4 u; g; o2 h" _9 f& c
1 w* |/ `1 V2 H" q4 N+ z8 _7 Xto setup-plot1: M$ ]; [1 e; R9 v

$ o9 V) @3 c2 T& ?+ z, lset-current-plot "Trends-of-Local-reputation"

/ x9 h% g2 d' J  H1 N' y2 H7 l' \' X% K+ U3 x6 x6 [/ R
set-plot-x-range 0 xmax

# Z1 M/ E' g- `% I( c2 R# I
- |8 u; i4 l* `# A+ mset-plot-y-range 0.0 ymax

3 \: U8 F/ v, _0 \! l6 gend" a9 b) `) l) z

; h1 G0 [% x- x5 p; Gto setup-plot2- T9 Z) t" o7 @/ k5 w* i) ~7 |

  d9 o% s; ]1 b8 I$ t$ u) `set-current-plot "Trends-of-global-reputation"

9 ]; W/ u/ \3 ?' C$ M+ q
. l4 t7 {) b4 U, y. E$ iset-plot-x-range 0 xmax
& A/ Y5 d9 F4 f# j

7 \9 L* T& K, U: X5 e/ O2 |# f  t8 }' \set-plot-y-range 0.0 ymax

+ C; {9 J* Z: E- u! Oend# D, D5 c, i: ]7 g

, q* R1 {- G) P4 X( Eto setup-plot3/ {7 H9 K2 V/ P) @
! F+ C6 q) L1 h) P
set-current-plot "Trends-of-credibility"
( R( B8 u. T' O+ w* {7 J7 V; i" ^
$ }# {* F4 x+ q3 |* s
set-plot-x-range 0 xmax

# b( ?) G7 f& C  G" @3 K
* D: J' G: d# q. }0 e+ Sset-plot-y-range 0.0 ymax
. D9 J/ V1 ^0 a9 P( |8 q  Q
end4 N0 Y" |7 E/ m# I

* |7 D  F) Q( d; ~/ `$ G, Ato do-plots' a5 r7 T  j/ l; M$ e- e6 I# f
set-current-plot "Trends-of-Local-reputation") I0 Y% g; l* V$ Z! W$ ~* |( D
set-current-plot-pen "Honest service"! R9 @4 p6 ]+ B; }  [8 [3 m
end& \. u: k) S2 c6 j. U! m9 r' ?1 q
' q; Z2 _" U4 _) w. W) A. _9 i
[ 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.. j7 r1 z1 m/ y0 u; \5 z
6 d8 V4 F; m: t; L
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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