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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:% D% r9 R- V' x$ X, ~# ]( Q
to do-business 7 }* i% D  i- [- ]/ F* `$ W
rt random 3603 n* }  o# }8 X' [* w9 P2 J
fd 1
6 K0 y4 G* f3 J. A' t: S- v* g ifelse(other turtles-here != nobody)[! R4 P9 i9 A; R4 B% J% G3 \% o
   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.
' X" ~7 P" z4 k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ E6 z" O/ Y7 C& A+ c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( E. p$ J5 ~. O& k6 W+ z9 n4 Q) G   set [trade-record-one-len] of self length [trade-record-one] of self
: W6 ?  j/ t: D8 s   set trade-record-current( list (timer) (random money-upper-limit))
8 V4 l) V7 e% S, p' l0 T( l& ^  `3 y8 x2 z1 E
问题的提示如下:8 F, H1 h) O. I  P. Y8 Y: I0 s$ p
: t' w+ Z6 W: @/ z, l$ W
error while turtle 50 running OF in procedure DO-BUSINESS$ J& r) P2 b( t' b$ D3 Q
  called by procedure GO3 O9 m+ \  z% C$ l. e8 S
OF expected input to be a turtle agentset or turtle but got NOBODY instead., s  C  q# o  q! H( u
(halted running of go)
) R7 V$ E9 c4 [4 V9 u" ~+ c& h( f) D8 }
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~~
  q0 M( R  k! f, U. w# 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6 p% e- Z5 j0 P3 ~4 ^/ l
globals[+ i) g6 i& Y7 D. Y! \
xmax2 @3 M  k" s9 g$ K, i3 ~( Z
ymax
$ }' ^! r2 G- W+ K7 s1 a* Dglobal-reputation-list8 b  |9 h( n! S3 z
: R1 L; B# {. u; Y
;;
每一个turtle的全局声誉都存在此LIST9 G  u8 q) ^  R
credibility-list
3 A- E6 |: i! H2 J$ Q/ o;;
每一个turtle的评价可信度' \3 E2 M; k# a8 B" ~4 H4 D
honest-service/ l! w" i/ U. B! v% X  R* e
unhonest-service& ^' \! o' ?9 ]7 Z0 K- J- E
oscillation: s2 e" v- e$ W
rand-dynamic
$ l$ s6 y$ p  K6 E0 Z]
$ l+ o% G; h2 j0 T  p( K0 \4 p: j! i+ y: c# f' Q# c
turtles-own[
6 D6 y+ p8 r/ R2 O( [trade-record-all8 |7 \+ X4 C5 W6 B$ d
;;a list of lists,
trade-record-one组成
: M! C) u/ Y' `& |trade-record-one
; u2 m1 n. h0 z* d2 L5 t;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 d, I- f  U! h. u- F, m  z
3 M- R' w" L5 V* K
;;[
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]]/ Q5 ^, N$ |5 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]
  z- p$ u8 u7 h( s8 W- m. ^/ w3 ucredibility-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list7 @2 p2 m" {& Q* o+ a& D! M$ d& X$ N
neighbor-total
- }" e. ?+ e1 m% C: M2 J;;
记录该turtle的邻居节点的数目. I4 @9 U( s. b+ {; n, O( _
trade-time# A5 P. q2 e% {: B( `! Z- M
;;
当前发生交易的turtle的交易时间
# H& v% A6 w0 {( q. D" {' x, [appraise-give
/ N# G. S% n2 r0 U+ N4 f;;
当前发生交易时给出的评价: n$ G; W/ E: ~" |/ \3 |
appraise-receive
' }5 E& E4 n8 h: i% J;;
当前发生交易时收到的评价
* B, R6 w3 B2 R, y" b3 f% y2 Aappraise-time
# r# }7 J; v' {8 C9 s5 D, c;;
当前发生交易时的评价时间
* M- n5 f5 J3 O3 I  N: v  ^local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! K* K/ z( T" k7 Rtrade-times-total
$ n/ j! ~6 n& A5 S0 K;;
与当前turtle的交易总次数
1 m0 b% L+ F3 ]( H: r# f/ `trade-money-total
' E; V6 x4 q. ~7 F1 q; Q) };;
与当前turtle的交易总金额
& W3 E  @, A/ q3 E  e- _  Q$ dlocal-reputation, v6 Y# T% N" Y1 N2 D, B# y; A
global-reputation! t# a* R7 z" H' P* M8 [+ l
credibility$ C* g0 r3 C. p5 t. E  E
;;
评价可信度,每次交易后都需要更新
% M5 Z3 |  F6 L& Fcredibility-all8 a. N9 x# ?% b$ j" ~; E
;;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
. X1 P# @$ u% g- C0 ?+ O0 o6 u/ \( K2 n% K8 o: A, h& I
;;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
4 Y: q( V- s, x+ ]0 |credibility-one
! @/ Z0 H0 S2 [;;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: w& g- v  ?% \1 }, l  D
global-proportion
( K: D' [, r$ F, n: G8 ncustomer
9 V1 E0 t/ \  \+ x; p& ]customer-no
9 v# i5 i9 V/ Z  p9 @% q. ytrust-ok
" N% b8 i; R$ k. k5 ?trade-record-one-len;;trade-record-one的长度
$ Z  o. }0 P' V/ Z5 `5 d" B]+ W4 O% H9 W8 u' O
+ k7 e# u2 y1 z: v' O
;;setup procedure
( N8 [' ?( f* e8 M( R& a2 N
* o, e- I: I! l+ S+ i& |to setup( ?% ]% I/ g8 j( P9 }' ^4 e# b
$ {( }& D$ A4 E
ca

$ c) o3 h* t# V  \* ?0 e" N* J5 t3 Z1 n2 R; O$ D! n
initialize-settings
4 g! O" `0 z4 A2 g  W+ @

& C1 g2 |; ~4 ~3 dcrt people [setup-turtles]

/ [* H7 \8 J+ _4 L) F# a. ]! m  f: N1 R; @  S0 k% c2 k* g
reset-timer
0 \7 H) q, D8 ?& C3 p

* {5 |+ g  y# k4 U1 |  ?poll-class
* M5 ~2 s# y( `3 n) w3 {
  Z8 n+ ]) r; @+ I) i* U' C
setup-plots
0 u/ X* I* F" {  N8 q) L3 j% e
- E: L6 l2 N1 |) E2 |
do-plots

  h; u) r/ ^4 k; ^end) [3 t7 ?- D# O) c/ l  C& o
6 A8 ~" y+ o7 x1 K
to initialize-settings
9 A# e% b( P* B: v) ?3 D4 B  f/ a$ T
! T$ m! @( Z1 ^5 H; ?6 kset global-reputation-list []

1 a$ T0 i0 I, l: w: T- u3 b
6 I5 c. q0 u2 q$ q" L& dset credibility-list n-values people [0.5]
4 t# T* J9 y4 G, Q  ~5 [2 M4 H
  P) {* ?/ f* F: Z6 U% S: s
set honest-service 0
7 J2 e) C6 Y! V) |- A
0 q# W, o) {/ v, ]; G4 ]# O. q
set unhonest-service 0
6 d0 [/ y% P( e3 Y% E

! j1 k: D4 Z$ X$ Nset oscillation 0

6 j0 `) q( `" g. G4 G, o/ w' h' }/ V# b
set rand-dynamic 0
$ E! _( T. i9 ~4 z0 a5 N6 F- {5 D
end
$ y/ z1 ]- j) }9 d" r1 o  S( u2 P1 b
to setup-turtles   o  C4 P: y; X. L5 o
set shape "person"1 {: [4 J) D5 A) \& W9 q# }5 E
setxy random-xcor random-ycor0 H4 e+ H" w3 m8 M8 g; u7 \
set trade-record-one []2 k1 m6 }( F3 g8 ]& ~5 x9 [5 }! {
! J' a: {( ~4 Y; W; x8 c0 \
set trade-record-all n-values people [(list (? + 1) 0 0)]
- l7 K) [* W( a. ?1 A) W  Y
* A# S5 ^7 ~5 ?. S
set trade-record-current []/ l7 r7 _* O9 `* t9 Z! H
set credibility-receive []
; |2 C; L& t. z+ v/ Xset local-reputation 0.5
2 h7 H' t( S+ }set neighbor-total 0
% m' ]0 |6 W$ g6 V7 L5 Zset trade-times-total 0
$ s# X+ i1 J, c; _: h* w( Lset trade-money-total 04 X9 @8 W% m  B
set customer nobody3 J7 o) y! A1 p) L/ C: C
set credibility-all n-values people [creat-credibility]
& R7 v" C7 P! t: Dset credibility n-values people [-1]
' S$ x6 m- L  X0 B# @  {get-color
1 w. v4 s  }+ ~

4 Z7 V4 z/ }% p0 Kend/ l5 g, L0 C& D  S

6 U4 z' G- L% [  i* fto-report creat-credibility
. K. G8 M& |* G8 B8 O) Lreport n-values people [0.5]" X# Z8 c( Z0 g3 ?8 h$ K. Y2 S( g
end- Y7 U) j1 p/ T, T" M0 k2 J
5 _; k  V% A  H3 Z% A
to setup-plots
1 \! G7 a8 Z& l* h2 g! |
" V; T3 |; d; A! C) y# Z/ `set xmax 30
1 a: ^7 m. y* J
7 o! h$ [4 d$ I- M( f% N8 y, \* K6 v
set ymax 1.0

, f! l+ X: M6 U9 j- r6 |) |( n8 }0 X
clear-all-plots

0 F1 z+ Q3 b5 c! ]- y5 h
6 f" m8 z2 Z& Dsetup-plot1

0 ^- H0 F% n. u* F6 ^8 @( |% Z/ m4 m4 D: _: s/ a
setup-plot2

, p) S/ ~9 L1 ^/ C% G7 y" h2 g5 y0 ~/ _. |& y
setup-plot3
8 D$ B: \3 `- u/ \+ |
end/ P; `4 s7 j8 A, E- t; _
4 Q+ ]& E3 o, B+ P3 x  C
;;run time procedures; u, J$ A" x1 L2 z
. D% ~9 p- `1 q! z0 d) H
to go
& F$ F; L5 e' e1 M
9 p) n1 ^3 H6 X8 d& E+ p2 jask turtles [do-business]

% ^7 `  G& P" u+ Y8 O- h" L) Rend' }: H) D# M0 `4 Q
; G8 p0 q. F3 {- Z
to do-business & k( ?' U7 s5 U. z$ h6 \: v4 m

0 X* L: V$ T8 ~7 R; a; S0 y6 ~
' g0 |' R1 f# u* j4 k, I- o$ Zrt random 360

9 g5 \& n; N6 [' p$ z, Q7 }. k$ S  k: k5 f8 e9 Q
fd 1

8 w/ i0 V, F. p
7 c1 E4 Y4 c* v; oifelse(other turtles-here != nobody)[
; l4 h  p( b+ J% z# _5 O. \* k- u

9 h; n  Y: U/ _set customer one-of other turtles-here

; H3 q' W/ M: A- _% w" t; Q) l+ F  q# U, B3 u! l
;; set [customer] of customer myself

) v! N5 J8 M2 f4 ]2 p& j+ ^& F( t6 z3 n
- M0 d  ?9 g$ n& E9 t- vset [trade-record-one] of self item (([who] of customer) - 1)
% M9 ^9 o4 k, b4 r[trade-record-all]of self$ y% k% ?6 s7 o2 A5 j3 z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  X7 Z  V- L, @* l* N3 i: G# n, a# _- Y' c6 G$ t
set [trade-record-one] of customer item (([who] of self) - 1)
$ f' k& b, A/ F9 |& C% X( f9 T, d[trade-record-all]of customer
, {1 |9 j0 V6 V0 ]- j6 Q6 V

: \; R! d+ C6 g1 ^! i& x- V% Yset [trade-record-one-len] of self length [trade-record-one] of self

; `! g4 S3 X# W6 C/ f1 U  t7 g5 ]* [' Y
set trade-record-current( list (timer) (random money-upper-limit))
$ \0 f9 Z: ?( a, ]; C. r  i3 L' C
! x: K. \) R: Y9 p* }' A: H
ask self [do-trust]) a/ X6 S& g% a- y* q! b. K
;;
先求ij的信任度
- D0 [+ C' ?' l* w7 U9 e; f# [  G" U' a6 O1 F
if ([trust-ok] of self)
3 w: I% Q$ k8 S  I3 g;;
根据ij的信任度来决定是否与j进行交易[
! E4 }9 G  s" Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 g( N5 s, t" Q% L8 J  E
3 K, X/ `1 }( [5 A4 d8 S& V# K8 Z
[

" S" a1 f& o2 @. K# Q# m2 `, ^
$ H+ Q0 c4 F6 q7 B2 Wdo-trade
, q2 S" r) @- I- d+ j6 ^
+ g& n3 J& {2 L; ]. u0 Y  N
update-credibility-ijl

- v; w3 I* j, k7 ?) C* W
! U# \/ I5 x  x. Z6 {update-credibility-list
$ P( u9 ?+ s! u( n( {

( K. I1 u3 W3 I( z& h# P! ?3 C* T' h6 {4 I+ l5 E3 [
update-global-reputation-list

2 f$ x( ~2 q% o" O1 ]5 o3 R: a; F9 T
poll-class

0 j" `( @$ p7 _9 R5 q
! |1 \! r8 n5 S  \* Gget-color
* o3 f$ D' S  y" z: f1 ~
) ]7 z  F- ~6 i1 X$ L2 M. z+ l  ~0 G
]]
6 X3 T: n* g! _, e) @  z; i% h4 B; P% Z5 c+ f: q; ]
;;
如果所得的信任度满足条件,则进行交易  Z  J9 N6 i- v1 d3 l/ J
1 c' X, {: Q* h" u& c! E( _
[
9 G: R! x8 Z- g9 b8 t' J! _

/ k8 O1 W; O/ R) u3 [9 G: |rt random 360
( }5 T+ Z  T7 Q, J1 o/ _+ x' c

2 D3 ^# u# b/ O" P& R# Efd 1

6 c7 J# ^! D0 X8 I( Z
. r+ S+ F8 E" T; X8 K* q" r]

$ Q. Z( L$ X6 `. l
$ B) o) m2 `1 v% B+ s/ C/ f: kend

- v* g' [% Z3 K' ~. A. T, y, k: B& U1 f$ m! @/ Z7 W# I
to do-trust ( j/ e2 {- x8 \; H
set trust-ok False" A, o% L# R  ~6 P7 a: L* m6 k

$ w2 C. ]& R4 r7 h

* m# K, I% C# b! ulet max-trade-times 0
- V, e- M1 C+ Y5 E3 O( F# xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 C6 E; `0 L' U, ^" b3 Y# V" u
let max-trade-money 00 t) p4 t( K& e. S! C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ _6 S; j; y$ A3 C! \
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 E/ k" U- s; o2 N/ _9 p% h
/ U7 k! K7 P1 N" Q/ q

6 M& S6 x9 O% m* A/ Q$ I2 dget-global-proportion
( O+ d/ ]; o7 Slet trust-value5 S( P1 @2 m7 w" s$ R" k" q# n
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)
( E& V4 w8 v, i' Z9 t
if(trust-value > trade-trust-value), b7 b" @) E! k
[set trust-ok true]
2 K, ~$ l; A. B( Q( N% c9 x/ y% n) Bend. z2 B5 X: a5 n  u  }, f8 t

0 n! ~- f+ }: o7 rto get-global-proportion
* n0 T; d" s5 D5 w4 Q4 \1 Qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 p+ @$ q- K( F' Q) i+ b
[set global-proportion 0]/ S! R0 F6 @) t& X* ^& Z8 @
[let i 0& [! A0 G* i2 R4 |( Z0 b, {1 U5 g
let sum-money 0* E4 T+ F* b, o
while[ i < people]! h  ~0 j0 ?9 L  m+ [
[
8 _" T) m* e  |( u  Y# Lif( length (item i( S! z# O; J1 C* B8 l7 o# B
[trade-record-all] of customer) > 3 )
2 Q3 J. p  Y6 n+ @
[
: T- z7 }7 \7 ?  lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 `; _3 i1 g& a  s8 |4 K* I
]1 T9 ~+ K# I& r# x0 Z
]
6 ]7 n8 B' F' O& T. [# P% a& Wlet j 0
, `, v1 r- [8 ]% \- tlet note 0& A5 s; w9 J6 O1 I" |
while[ j < people]6 P  z; P; {2 r  ~$ c& Z' A
[
* X. z  [3 a& \5 F' Xif( length (item i9 s: F" o" A* }+ b9 C4 ?) S' [
[trade-record-all] of customer) > 3 )

4 L# R3 @0 P. f; F[
) N, v  m* f# L' f6 ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  Q; C7 B' \9 a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% k" x, y0 f9 R) z; v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: Y7 {% s8 ?# v- A6 Z+ Q6 w
]
8 a0 W2 b# B( a]
/ G, {( O  D. u& O2 O2 k- B/ t. pset global-proportion note# [+ T$ g. B- p6 Q) V! }- Q
]) `' o2 I  y7 }
end3 G% G, }+ H  D8 ^/ p. Q# m

+ d" e2 G# Z7 X* E: A& Fto do-trade
- h; b# N! g" ^: j; J1 Q, q) s;;
这个过程实际上是给双方作出评价的过程# ]4 _) I- ^# n* l8 w8 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 V2 L' {! l4 i" d+ j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( C6 G/ l" O+ v4 p; K5 W4 V) \' ]' eset trade-record-current lput(timer) trade-record-current
+ A& P$ p( a$ @% Y! S/ v  s;;
评价时间
+ j/ s! U7 P& B8 U$ `% T% |, Zask myself [
: ^3 m2 O% }2 R3 Bupdate-local-reputation
5 \) n& t9 a4 e7 I+ w! t1 e7 |set trade-record-current lput([local-reputation] of myself) trade-record-current
% a: z/ S$ ~; v( r) U* n! v]
7 Z: {9 }3 ?# u/ M3 f# K; g  aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) u+ E$ O' ]# A: e" |& l& A
;;
将此次交易的记录加入到trade-record-one( p: Y. y5 S$ }9 g2 F4 a
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 q) g! R' G: `  t# {- d" E' I
let note (item 2 trade-record-current )' s& g# g5 d3 F* c  T4 o' D' H
set trade-record-current
+ n' ]; |& U2 {7 Z1 J. q, D+ M7 G(replace-item 2 trade-record-current (item 3 trade-record-current))
  |* F  c$ |4 w2 D# e
set trade-record-current& h1 g, j! P( u( m+ ~# C
(replace-item 3 trade-record-current note)
" {) y3 k7 }3 O3 ?; `' d- K. \" V# ~. F: x) a

; Y3 m9 q8 y9 Z' ~9 a! H1 Cask customer [# n  B8 b/ |6 E
update-local-reputation( P& w; W2 O5 W* r6 _! Y* t# Z3 }
set trade-record-current6 {! N6 q$ y3 v; ~" s. I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 C( w$ q# J0 q4 ^  c$ P; y
]. T8 I+ a' {6 D

0 w. ^7 h& O; @2 R* Y5 w; d
( X3 {! p3 P9 l' s2 {( ]. ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  k9 M9 W; _" X3 a0 I7 K; g7 v
0 c/ m5 e. ^4 c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" W2 I% C% C% J7 v
;;
将此次交易的记录加入到customertrade-record-all
9 I# G2 E, A& b0 \+ Dend
! W# ^1 w& |; _- e/ }4 b- i% x/ H. z+ y9 O4 b9 o  U+ i1 M
to update-local-reputation% W1 n8 J2 ?3 ]3 F
set [trade-record-one-len] of myself length [trade-record-one] of myself
  ?" Q2 k* l0 U3 q+ j" w/ C+ b- y% X
5 e" L+ A+ a6 ~2 B+ w7 }
;;if [trade-record-one-len] of myself > 3

$ K8 z8 Z2 v; v2 t" wupdate-neighbor-total5 F3 U' n$ V) j
;;
更新邻居节点的数目,在此进行) \. O$ Q, S0 X5 r
let i 3" i) C' b& ?3 i0 S# e# g6 V
let sum-time 0
9 G0 k2 x/ M2 f& twhile[i < [trade-record-one-len] of myself]3 e2 o( f8 f9 g) n2 q6 o
[
0 O* y6 J$ _$ U/ p6 P0 m9 Pset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 d7 N& l' a& [9 O9 S0 v
set i  P  N4 S# k% S6 |, G$ [0 t/ f% ?
( i + 1)
* P  E! Q" L6 t: b: X" V# f! T
]2 |: n2 ]. A% c3 A' \
let j 3) R' g1 e/ [! `: w  m8 T
let sum-money 0
! o* [# x/ q% ^6 l0 k# twhile[j < [trade-record-one-len] of myself]. w- @0 v% v6 k% T9 [
[
8 J% Z& s6 Y6 g0 F: G4 ~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)
( W. _$ z5 H; k# Qset j
* e! }) M! `. j9 R8 {( j + 1)
% U; R: n2 b3 R4 Z* m
]
) N6 k' b- @3 r4 Q, Alet k 3
: ~+ u! n: _* zlet power 0
6 X' O  u( N$ b7 ~let local 0
- W0 L' |/ s' H+ M& {( hwhile [k <[trade-record-one-len] of myself]
# o4 \7 W: a2 @6 U! t! c- ~' e1 x* H[
$ A+ W- G5 W% m6 @. N* L7 Y( eset 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)
6 V- j9 l4 _+ v) r1 zset k (k + 1)
1 v# x8 E1 o* k0 m$ P- P6 A]
3 G: C) B: D% ?% S5 U; Mset [local-reputation] of myself (local)
% C7 K# X1 M2 h. ^. \end5 J* V1 I9 W0 l( d5 n5 h" }

9 s9 x1 \' J# g! D# Xto update-neighbor-total
( L1 M% G# X6 x3 J: H! l" M
$ L) c  Z9 E* B. u3 E7 V; c- tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; u, }. U1 Q' [! W7 C. N; [8 E; ^4 l$ M

/ ~5 y2 B6 U. v: F# U/ q" c! C0 Send
! W  A8 `# C" F) l$ }6 H, W# X* i8 s) X
to update-credibility-ijl
& z& `# m, e) _6 h( C1 f/ f2 S( ]; m' a+ F1 M- V$ u
;;
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。
7 g" g' V/ x# l; I) {! W+ B8 m- Zlet l 0: f" h& k- s% f
while[ l < people ]
  p1 K7 H0 A) 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
# D  X/ [3 E2 M- B% g5 C[% G  x" [/ I$ @" `1 Q/ q' A
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 }1 e6 ^9 t+ h& z* x4 L0 x
if (trade-record-one-j-l-len > 3)
$ h4 Q! T' `" P[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& ~4 d' \6 h8 ?& i/ I* r3 U
let i 3  d1 ~/ `# q  D# e
let sum-time 07 C# K  X  H( s
while[i < trade-record-one-len]
' M: Y) @% C' B! s. h[! P5 Q$ g/ s7 O* i
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" v1 S, g* b( V
set i
" e5 O% l. \  |8 ]7 t% @% x( i + 1)

$ l1 ]' }5 O! `  g6 i- M]" ~6 ?+ \- L0 ~, u! T; x% p
let credibility-i-j-l 0
' ~3 _* r* ~) c, k* Y$ X& y$ L;;i
评价(jjl的评价)
! c4 j1 B6 o* R5 wlet j 39 z) e/ c) x1 c# m1 e
let k 4  Z& _$ i$ W  o, t
while[j < trade-record-one-len]
# P+ j. \6 @8 L  r[
! M% _7 f, A- R7 Q# C3 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
  ^! x/ y- j( ?( q5 f8 ]# H& Aset 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), L% d& L1 Y  I1 g7 s0 ]
set j+ Q1 z9 g- F' U" Q& |0 `
( j + 1)

! L7 X+ F1 y: N. k  e3 Y# K8 f1 C4 O]" m" j: `, @3 O4 U
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 ))( C0 f, H4 t" J8 e8 y& t$ z7 q
# j7 L( a2 h; j* v& D

( I# ~, ^% n, I: h1 ^% m$ b3 \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) I' _& B1 t9 y;;
及时更新il的评价质量的评价3 m: M7 R) r7 J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 N6 I% i' P# T, ]: M( c( {
set l (l + 1)
% c, \- X. [- Y5 j+ d$ {' f]
$ c: ^9 |6 S, c3 `2 u( Uend/ x  i: [, O' x9 x

% t/ `- s( f) i. ?6 sto update-credibility-list/ |4 b5 m. {# k" D' V! w
let i 0- Y4 C& T1 B2 a$ u
while[i < people]
5 L9 x5 A& A5 h' A/ Z[8 B7 _2 a- H6 [
let j 0* ~7 l( J5 _! i/ Y
let note 08 L3 v" W/ ~7 s* i' l
let k 0
# z$ N' H* L$ Z* U+ z2 i;;
计作出过评价的邻居节点的数目
7 ^7 ]' g7 N, vwhile[j < people]
3 G* k; \* r* d' [" X5 z5 C' F[2 I# y/ A& m0 h
if (item j( [credibility] of turtle (i + 1)) != -1), f6 c9 _! X7 H% V9 n+ z
;;
判断是否给本turtle的评价质量做出过评价的节点7 j1 x) w) w2 `8 Y# F$ K5 J2 Z, k
[set note (note + item j ([credibility]of turtle (i + 1)))
1 |4 d2 z* E7 z; w2 T;;*(exp (-(people - 2)))/(people - 2))]

; M$ N' ]8 ?6 {. j* Z# k  N* `/ v5 Gset k (k + 1)
* a7 {3 C! T+ r0 X]
2 B6 p5 A. k9 B+ R' z  k7 |set j (j + 1)# S' ]0 Y: e3 n2 x
]
2 F- e0 C  s5 u/ k/ @set note (note *(exp (- (1 / k)))/ k)1 w& H7 H: j- B. J( N: S0 q
set credibility-list (replace-item i credibility-list note)* {- w5 B* `, R7 p$ r0 b( t
set i (i + 1)
; L- W: c" S* j& _% n]
" _- y: X: @) ]4 M- N  \. hend
6 F( \; z, z  D/ h) F9 u- o6 O# ~2 D9 M8 q7 R1 N9 g- S6 v
to update-global-reputation-list
" G+ m9 [' @  |4 Alet j 09 e5 ?$ f! R; J$ r( D
while[j < people]
. \2 Y6 o. {5 h[
9 ?8 w0 ~6 v4 X/ ?- i+ elet new 0/ o# N" R8 y/ C0 H. Q3 @0 u
;;
暂存新的一个全局声誉
; _& r4 f! H$ [" S. d3 llet i 0
& ~9 y# [# K3 m7 }$ ]( Wlet sum-money 01 T  y, c0 _) e% Y* q+ `: @  `- |; r
let credibility-money 0/ a' B; t/ p) A) b+ f3 l, G: Q
while [i < people]1 W+ d4 u! \$ X# _* e. X6 V
[
$ k" T! _! U4 Q* uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 ]- _$ V6 y9 r' y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 ^" O6 [& E9 a' L  t$ M( Jset i (i + 1)
4 g( u7 g- Z& n5 ?5 |0 n  }$ n# I]
& R3 _6 w# D$ S! xlet k 0$ J2 W$ A% K& q: q6 k$ g
let new1 00 f+ ]7 g  n" W  x
while [k < people]2 K1 v$ o, d( n+ j1 b; V& u
[
& Z3 \& x, s9 m; v! I8 @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)
/ V; u% e6 B' Y& Dset k (k + 1)
. u  f0 U+ j1 ~4 `: f+ R0 _8 ~7 _]
+ S9 |* E' Y' J/ E; y: I9 \set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" S+ w6 L5 V, h/ K& Xset global-reputation-list (replace-item j global-reputation-list new)
; L2 p1 x4 e) ?- cset j (j + 1)
6 E7 _0 @, ~- C]
# r1 R/ h8 l2 t- N; I  I* kend% \3 c. i: O- N8 I& k6 h4 E8 G# G

) n) v/ y4 |: t  X6 i
& ]  T4 u) y( n. W9 O
- }7 L+ D+ L5 o0 z3 w9 S& i+ ]: tto get-color
9 v  m" R4 \7 V" e1 j6 q8 q& h$ }& i% l* d, s0 ^# T: B
set color blue

7 K$ X+ G$ y3 F% Mend
6 X8 J) ]! O. D/ z8 C8 B
4 g! W; m. ]$ c" _/ K5 Qto poll-class
' C" M1 K  W3 x, r  Rend. ^' l- k4 O9 [7 R5 ]& H( d

& S* M6 o5 _) {/ lto setup-plot1' p* R' a, N- f% U& R4 t' |; t6 h
' J/ T1 D1 G7 L& g, j2 T% [
set-current-plot "Trends-of-Local-reputation"
3 Q6 }5 p% T% I; n3 u! f
* V5 V& t! X6 w2 e5 u
set-plot-x-range 0 xmax
  y+ t7 W% G2 V# ]) a
/ Z' m7 }% y$ e" G
set-plot-y-range 0.0 ymax

/ t0 c/ z" V" ^3 q2 e/ C9 jend. U7 \, v* P: T+ g5 r% U; F" S0 z

/ U( m4 V1 q% g2 Ito setup-plot2
' d* C# S+ r5 G  @
+ d. \9 g9 s$ Q  z; e# X$ B7 o$ q& k0 zset-current-plot "Trends-of-global-reputation"

2 f2 T  x% j; \* j! U6 M
) Y9 D5 l7 j" X  G- A" o, `set-plot-x-range 0 xmax
: I. r! h! r! C

. [. T7 u0 e. O) n* }8 G5 K! K; o4 Gset-plot-y-range 0.0 ymax
6 {# @3 k% g2 b, x
end& }% e# I# x4 g
- U0 K* ?$ c) a; b! R, {
to setup-plot3
8 x) Y* J+ j  G' O) x
. l" x9 U) y8 d, ?, yset-current-plot "Trends-of-credibility"
3 o( h* P- ]. j: r& ~
- Z2 G* V9 y9 S! e$ `: H
set-plot-x-range 0 xmax
) v& h( I3 i' m7 w# X6 r; K6 q: E

$ F2 r$ A7 p& y1 bset-plot-y-range 0.0 ymax

+ Q% T! a# {# Fend
# J* N/ T3 K) p! Z6 |+ L1 D( n$ @+ u( Z
to do-plots+ u2 k5 v+ L3 n$ F" M& K; `( U" G5 b
set-current-plot "Trends-of-Local-reputation"# c5 S8 _" X1 R3 I9 A
set-current-plot-pen "Honest service": A" f8 k& W, f+ w
end
3 s6 D5 L# }1 U5 ?0 C( E
3 X) o/ D7 }: }9 t[ 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.* J# C% p- E% \( T5 ~. b

$ G. i1 M6 G5 X3 r9 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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