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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:
2 `, e: F2 v! K) Yto do-business
$ Y6 l8 _) t# {1 Y rt random 3600 Y6 k2 w" B" |* A: R6 B+ z- I
fd 1
6 s4 K) D9 J9 S/ N/ q. N$ |% ` ifelse(other turtles-here != nobody)[
# y- o4 M/ D) D   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.% K7 ]  z2 @) s" k4 k3 y7 X+ @; K
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 M. G# m, Z5 q4 I0 ^8 m' P! l7 H
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" }; j  N4 Y6 h1 e   set [trade-record-one-len] of self length [trade-record-one] of self
7 i: _, O; w+ A: y* l; w) e; G   set trade-record-current( list (timer) (random money-upper-limit))* o  w) L& x" R2 N1 ~5 n
* ?0 A' H7 j- }7 t0 O/ U  r, C
问题的提示如下:
/ a+ P' y# Y8 P- p5 W
# x/ r1 i+ o$ L% o+ ]- `error while turtle 50 running OF in procedure DO-BUSINESS
6 `0 i% H' v8 k  l3 S( _+ r- b  called by procedure GO
9 p' Z$ t0 u+ ~* s$ m' l: POF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 J! S2 j5 y8 z* v& P# ^/ ^# L
(halted running of go)) @3 Z5 Y# C8 r' W

8 a/ Z1 T1 l$ ^. b& P  Y  S5 t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~~
% \1 `+ C2 L& t1 i# |5 w8 H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* J- P* r$ A9 x9 K( i. W; Q
globals[% y9 V9 F. o! [9 Q0 l
xmax
; \% R% a# `4 ~; {& p+ ?. u; xymax: t' y9 Q6 i" {( n  g8 p9 a+ V
global-reputation-list
7 v9 V  K) w: c! d& F* F# u1 G6 Z* U4 {* N; U  j$ w% g2 z
;;
每一个turtle的全局声誉都存在此LIST
' Y5 F) a, r1 V( M0 Ncredibility-list
$ F4 H- p6 d2 U5 z7 I0 N;;
每一个turtle的评价可信度+ ?0 U2 Y9 I& ]2 R7 M, y
honest-service1 t* C. q! z  D5 g0 E
unhonest-service
% g+ Q& m5 n. Coscillation$ [. j; `, q8 s
rand-dynamic5 O0 Z% w: e5 u2 G8 t
]5 W2 B6 w4 V9 O9 S; o: M
5 d" n3 R8 A1 Q. ]3 Y
turtles-own[
" c- q% F, F3 u. Ntrade-record-all6 [' s+ _+ M# @: q
;;a list of lists,
trade-record-one组成
8 y# p( L4 ^0 T% _7 Wtrade-record-one
6 O  B  ]/ H! \4 c4 n+ ?9 r;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) L7 ^0 m" \. j
- J6 i% w6 V% [! d& @! z6 _1 x. l# w;;[
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]]
4 I7 n  i) N7 c3 O  L( k, 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]* O/ ]/ I9 z8 o* n
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list8 z' K2 L0 F: ?' {) G+ \
neighbor-total8 s% q4 R1 k; P* X$ D1 P4 W
;;
记录该turtle的邻居节点的数目. X6 V) b0 V5 Z" h. I: Z7 V
trade-time! D- X7 \: V* t) {. _5 x
;;
当前发生交易的turtle的交易时间
* c  }( C4 \; z  g: o. e2 happraise-give
; o8 n% y9 V4 @6 N;;
当前发生交易时给出的评价
9 F, p  ?& R( m. _/ g3 |appraise-receive) d6 ]- e* N0 }. j: J. L
;;
当前发生交易时收到的评价! R7 ?" s2 T6 \7 n+ h2 f  n$ c
appraise-time
' u7 K" ~! e0 L2 X3 I;;
当前发生交易时的评价时间- Q4 Y  H7 u& w4 |" ~" V
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 r5 m& r5 P0 u5 C7 h! utrade-times-total
+ L' t: a) `2 a& X* k- n! r;;
与当前turtle的交易总次数
% A1 ]* W% a! m) k  g" H9 ytrade-money-total
& M/ e  S, j' p+ T" N. w! \;;
与当前turtle的交易总金额: B7 g& R, o" S' D) b! e
local-reputation
  O# Z" O" Y) G  E. Q# b2 Zglobal-reputation
& T+ i0 d  t2 ]credibility3 L" _' |2 E' g+ E9 K# B$ N
;;
评价可信度,每次交易后都需要更新9 w8 A( G* J* `3 O5 @% O" ~
credibility-all
* Z6 O3 E  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: G2 V+ V2 W3 H3 A& z
) i/ G; q5 q5 e
;;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$ o3 O3 ^) y' C. ^
credibility-one
. C3 G$ n( d0 E8 q, @6 K8 W  x;;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. x/ v1 f6 G: z
global-proportion
9 f5 u. S6 F; E2 Bcustomer
6 K2 L5 [& n+ G- z; W8 p3 B! Pcustomer-no
. f" m' C: I8 O; {' z/ ctrust-ok6 z' E6 \! X: h& U) G" d* L* f' y
trade-record-one-len;;trade-record-one的长度
( C5 R0 c7 z/ C9 `$ A]
- _; S/ S8 h% N6 w# s& H
: w! K+ [* _  {  S7 Y$ l;;setup procedure0 ^3 s+ B! n3 Z! m) H
; |* [/ w  w% W1 K) H0 T
to setup
6 l. b1 S  P0 d3 S- A
! P2 ^1 N5 B4 }ca
' O. P, N7 @- V" k' X
# I+ g+ O* {8 ?3 n. z, X0 v
initialize-settings
6 T+ r& U; @9 R* x
0 C$ @. X2 q0 p4 j4 f
crt people [setup-turtles]
2 x4 M0 g7 I; z/ r# @- ?5 X, C- c
0 d9 b3 b0 C  E
reset-timer

+ B8 P! _" Q/ L: h5 `. u) S0 C6 f2 t
poll-class
. b; r- I8 y. q5 T$ N$ J

4 r- w% j# d7 g+ C0 x6 B" Isetup-plots

, s/ W) o% J  P( Z: ^0 |
2 G# v: s) x( T, b& k: V+ Y2 ado-plots
* D/ r6 h6 [9 a3 E7 E  v% M
end$ i# Y6 G  l& p; w6 k- v3 `6 J
- M% G+ \; ^! D* u5 x8 l$ G4 N
to initialize-settings
/ o- l# W9 C+ \# y/ _6 n8 A% y
! J+ M* z# T& x. L) [; h8 N' Bset global-reputation-list []

4 s" o! a5 m( E1 d) U8 J# ]2 s9 I* c& `
set credibility-list n-values people [0.5]

  X: E4 q9 l1 [# ~. u- }8 O$ P: r& k$ T3 g: A5 f
set honest-service 0
: q9 k3 d7 k! [

: Z# n3 v/ L: c: \set unhonest-service 0
4 y$ c& D3 ]8 z

) k3 b  D6 h' S2 cset oscillation 0
# x+ b/ p* n7 X8 S* U  B$ e

, k9 A! Q0 E; J1 f& s: B9 _set rand-dynamic 0
& x1 J3 P: s5 j3 Q! k
end
# z4 ]! i+ x; W$ [
" ]( a& m( k3 f) K4 D/ B0 _# Cto setup-turtles
, f$ Z# [; _$ S8 J& Y# _0 ~set shape "person"
, [4 {4 M8 e) Z' K; K8 A; K2 ~; ysetxy random-xcor random-ycor  |6 {, O8 ]4 h$ S: T+ H" X0 ]$ h
set trade-record-one []9 `. c7 z% t2 k4 @# d! E) c# U
% n# c3 H* E8 l9 f) M
set trade-record-all n-values people [(list (? + 1) 0 0)]
% M; A* k" x% [# l, y2 t& I) b3 N
2 B+ t$ ^5 K/ C9 x
set trade-record-current []9 ~' [$ c- p" K) ^4 i
set credibility-receive []# O9 w# y( j/ I# w9 b* k
set local-reputation 0.5
( ^: Q: U) w1 d  F( i% H( [, }% Kset neighbor-total 0: I8 p, V  Q3 O. }2 d& S2 A- u
set trade-times-total 09 a3 j0 Q) b4 d7 ]
set trade-money-total 0
1 Q% z# o. x( a, ~/ tset customer nobody* s7 Z0 l. x8 c+ q
set credibility-all n-values people [creat-credibility]; ?5 m# a4 H" D( P* b& ?$ e
set credibility n-values people [-1]
1 |/ f5 p5 Q' ^# u" ^9 z  ?get-color
* m- ?5 z! l7 _+ J
- q6 y. z& B1 R6 y6 w  x. k( l
end
7 G0 P7 D! a$ p4 m, q$ P/ q& L% \
6 s# X4 K9 @: f6 N# o; Q; mto-report creat-credibility
4 ~" H4 u9 F5 {6 {report n-values people [0.5]
. v! `% D5 z: _" P4 \& Q: p' ?3 @end5 R1 B7 E! r; u# V$ k
5 w% l* k9 P8 H8 F  a$ q- n1 B
to setup-plots
  F. k9 f: O7 {( W
8 f* |& d  y! y& R) B+ r1 j# `: qset xmax 30

/ w4 B, M  E% T
7 f' d5 {: H$ W# gset ymax 1.0

& X  N- R7 q$ i, ]3 O" I! L( O% u' b; F  t% M& M/ {) T
clear-all-plots

2 ]9 J4 @6 r  w2 {; i, e+ W/ H; A; B3 s6 L
setup-plot1

; [4 A5 U6 U9 j  Z4 S
" o. H( y, B+ v' Osetup-plot2

" G# `  C4 m2 f6 R& u5 \7 K: A: `! l( b2 i, i3 ~# b, e$ v
setup-plot3

7 z# t) U% H9 j. g4 Q4 r! N2 n) Dend+ W7 x) ~9 N" ?  Y% G! Z- h

- G' G& u1 N2 A  k! K;;run time procedures& c' Z8 J, B0 f1 o( a' i: c
! E8 q1 H# X  ]0 o6 ^! \
to go
+ D2 G, S* m( ^& ^/ A" Y7 x" W. q7 F. v4 \
ask turtles [do-business]
1 J; Q1 p* f. k, _7 c
end
5 p/ P" f+ H( e# F: j% T
' t6 `( c. d$ e! [, c. x) Hto do-business
. u. S; @7 S& ~' m) G9 Q
# L  n8 S9 T2 j; N  Y1 }
  y2 p' V" e# }& {( M
rt random 360
1 i7 n/ p& x1 ]" Y5 G
6 Q7 X+ n' B# [' G+ p( @8 w
fd 1

# Y) @$ g/ ~: h% W# H/ [; {
8 z: r; O, a! b9 P0 zifelse(other turtles-here != nobody)[

0 B5 O& f7 i: M" E0 }" Z) E! h9 _; t* F4 u
set customer one-of other turtles-here

' G3 |+ m* Z6 ^+ v/ o3 f/ ?6 `6 J& Z+ w0 L4 n. h
;; set [customer] of customer myself

. Q4 c' H4 I. i5 T
" @2 z0 X" e  R6 W  E; qset [trade-record-one] of self item (([who] of customer) - 1): Z8 S9 x7 t2 M7 g1 y5 M  X/ W
[trade-record-all]of self
2 Y: g, K, s2 K7 a9 B6 o  W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% y) @% T' [0 f, H  X

3 w/ r5 p# x4 K! eset [trade-record-one] of customer item (([who] of self) - 1)5 `* x' `; R9 r1 k
[trade-record-all]of customer

6 a: v" ^5 E9 ~2 n- N. e+ [" V
% Z1 w( e5 i. z- mset [trade-record-one-len] of self length [trade-record-one] of self

. V) J* T. E* x! u/ }+ ^9 g  \+ p# ~- q8 Y. ~  \
set trade-record-current( list (timer) (random money-upper-limit))

1 k' B/ r9 ^1 U% z
/ q, Z3 r- j( g5 S3 ^" Kask self [do-trust]
$ O/ T, b% Y1 w0 T2 Y! C  C4 ];;
先求ij的信任度
& S6 s- |: K8 V6 e5 ~. u# i( Q
& G; x' p7 U8 P0 ?- [if ([trust-ok] of self)
1 Z/ K8 A' d# [% N; R' Q8 Y; {3 k$ M;;
根据ij的信任度来决定是否与j进行交易[7 U$ X% m* }3 T2 j; \7 m& X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself4 y, k) A0 P4 l/ W) n, h  b; S

3 }, e) M7 f& a* X) |4 K[

& Y, n$ o/ K) A! f! a& D
& U1 b. }# e5 P3 a6 mdo-trade

9 P" }" V7 X4 n- J  r% N. P: {- e2 J. D1 W
update-credibility-ijl
  m* H! F- f0 p& u1 n3 i2 T
  Y; f: W& q: V0 o2 N# r. S
update-credibility-list; ?8 h! G1 n* T% Z7 J" U/ M9 {0 k

( q. J7 J5 Q2 k6 o1 v$ a/ f! u8 F6 \5 t/ U& I% a
update-global-reputation-list
+ @: E5 \1 K8 S2 d

! J; H+ g4 d) j9 q. ]poll-class

% _' W( K2 P- g& n; ]+ ~8 ^% w  O1 @
get-color

" G9 c: A2 A+ T% Q9 _/ R7 T! x
]]
4 l; K* R) T$ [3 C* U9 W2 e/ v$ v& k8 L. U0 V- g- ?% b4 I5 T# e
;;
如果所得的信任度满足条件,则进行交易' a& }6 I% ^- N/ i6 F

9 x! m, l+ K# [. b[

" C  e. b8 K/ P9 _: V7 o) ?" M
) J( d& J2 H4 z* hrt random 360
# g5 I( f  c$ _# X. d# |

7 A+ ^. C0 H( D" D& A! Qfd 1

- _; ^% T8 @- T! M) x% @: U  C/ w5 E. j% X
]

" o, K" q7 w4 T- r! e: ?+ p
# ^, t- V3 }0 ]" K, vend
- x- n/ _9 o8 h, Z4 O

8 _5 b- [4 G" c8 o4 u+ \6 s; hto do-trust
( S( u2 g/ g4 c, p& Y3 o3 k7 |" S. D4 Tset trust-ok False
1 D% E6 R( n3 }. _. H0 {# A. }) j3 x
" Q/ z1 P; \5 l- {- q8 ^4 R
let max-trade-times 0
* u- |0 R- `# d3 s& V8 gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" \$ N4 J" j! jlet max-trade-money 0$ `" U: i4 E6 d% S: u0 e( I# G
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 ^: x1 V" X0 Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ U! l" G' q$ H1 D/ ?
0 b; Q6 L6 G, d" S! h. a; d5 e  t

4 r/ [3 c- `- S6 E- q6 A! I  Z4 [# zget-global-proportion
+ J8 I$ ~! g0 [; ?" Alet trust-value
( `3 H1 D% {* `* [7 X- V% Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* F& B( Q2 L, }5 r0 b+ r
if(trust-value > trade-trust-value)( n, i* ~  b8 g4 {; J$ f1 y; ^: _0 H
[set trust-ok true]; O7 r  |- @5 f
end7 L8 _9 H; \8 Y+ f

: Z# R( o; s7 n; R5 Lto get-global-proportion
- r# _* t# Z( o9 ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 C# S1 v4 f% e" f4 n& D
[set global-proportion 0]
7 ?. A, C% L) I[let i 0& @0 S/ {5 b% _! x
let sum-money 0
% ~4 g  T2 ?- N6 ~; ^3 twhile[ i < people]
$ O9 i0 H8 I% S. c: g[
1 ]! T& o- V9 |- |3 \if( length (item i* y8 U  ?: N4 p! J, e( a
[trade-record-all] of customer) > 3 )

  H  _0 a. @. Q8 @4 b4 I; [; H[: ^% V* _. H' V' N3 A1 D0 J8 A
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. w; R/ B% R- U/ j$ M]3 [5 b, }6 x  F; S7 @
]5 b, V2 [/ p0 p8 x5 _$ [' b
let j 0
; [; z: J0 _9 Z9 J/ j+ nlet note 0- E9 b, Y4 g. J4 s5 M
while[ j < people]
, P6 h  ?! C. d# U& P) }# X+ t7 e/ ~[  t' y4 Z+ }5 _; ]
if( length (item i
/ }7 z- V; x/ ]" w1 P3 P[trade-record-all] of customer) > 3 )

+ d9 q0 [8 U" M' j[
* \3 B9 u+ d; K/ ^# Z9 ?. Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: p  c: q" }% Y8 H[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ s5 y) T) T, @; |# G3 ]0 Z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
; k% f6 k; n; _" l]
5 u7 ^6 p. N/ U]1 {$ q6 N" {- _; Y0 |3 W% B
set global-proportion note
, W- z, t. I, f2 O$ Y$ C]0 y: E3 s# E' j- W, V
end& ]0 ]( Y4 a1 z* ^

' D2 F# z5 E3 e" A& V2 ^to do-trade
# i+ R9 ]- A. g6 b; `6 o1 Z;;
这个过程实际上是给双方作出评价的过程" {/ r# g# J6 |4 `7 _
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; J  m; c  @) c/ Y, h' Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! \0 \7 z. ^3 ?2 m8 G
set trade-record-current lput(timer) trade-record-current$ T: c/ G0 m7 v
;;
评价时间
1 G3 s7 x6 Z) i2 o" _! m% Uask myself [- H3 l, i) E9 X) L9 }) o9 f
update-local-reputation" ]+ Q, J$ r! a2 |. z
set trade-record-current lput([local-reputation] of myself) trade-record-current, A. ?* x2 e3 l4 p" J# P
]7 R) K4 t& a) `1 H$ ?5 H, Z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 B' Z4 H( I4 m;;
将此次交易的记录加入到trade-record-one
  _$ _1 @+ i; O$ cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ T8 q6 V  \( t/ h4 G, y+ d
let note (item 2 trade-record-current )
( s& E0 @$ D. l; N8 W) i7 cset trade-record-current0 M3 D5 ~! h" `
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 o# r2 t, E4 }( @. r- h! r
set trade-record-current
$ \, q. _  Y7 f# k: E( z(replace-item 3 trade-record-current note)
* q6 ^+ p2 ]( N0 O$ @' j0 {" K% q& p: `9 A6 \* J9 T6 ?
1 o1 J; S; v# U5 z' {
ask customer [
0 R5 ?* R( h) K, Xupdate-local-reputation& H% _9 W! s+ x4 T2 m+ e/ C
set trade-record-current+ |# ]+ w3 g& D: n% o! |3 v
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& D" L  m! l' `3 p1 P]
* C* _# j9 w8 o  E8 {- u( x: a* e3 }' S2 X* {" C: T6 W

( G1 p, D1 ~/ k) a( Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  ^1 x+ G6 M6 m0 m+ {

1 [1 d6 t: _* \0 n: W9 m4 Xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 M/ n5 C; @4 Y- M& C( ~
;;
将此次交易的记录加入到customertrade-record-all
. v( z9 z9 t2 o$ h! g1 Z5 Q9 Gend! e9 w" M6 }+ A9 T# V

  ~6 |4 @6 K# m2 Y4 `0 U  |( \to update-local-reputation- I4 t/ `. K5 s; W
set [trade-record-one-len] of myself length [trade-record-one] of myself9 Z/ y" W) e% j8 [+ J

) \5 n; M% p* X5 k
# |4 {& Q8 n2 K% K6 k$ X5 z9 \! R;;if [trade-record-one-len] of myself > 3

1 Z: q  g% |/ dupdate-neighbor-total
  o! \  D5 S3 N0 |5 {;;
更新邻居节点的数目,在此进行: I+ r! T& y  o' ^* s) {
let i 3
7 ~! ?- n0 T& ~$ `& ulet sum-time 0
0 D/ M) H8 Y7 |$ w' w: }) Kwhile[i < [trade-record-one-len] of myself]6 b5 G. L8 S, F4 [& T  w. J/ ?
[
) `; R) @. v6 n. R  A: cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). i% w& ~$ f, l- t9 G
set i
+ z0 v" V1 x3 w. v7 k! Q8 E( A( i + 1)
8 |0 Y! F5 u4 M6 i4 {
]! x. ]$ K: Y& H0 \
let j 3
, G0 I* M8 g3 B0 j9 Ulet sum-money 0, O. X1 I# l# n& E' D% q
while[j < [trade-record-one-len] of myself]0 M+ Y7 G) K! M) V8 i3 E
[- C" t8 a8 A0 O8 z6 S3 r( o
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)
% z: ], Z9 j  R! p" u( Y( eset j+ p, o% N! p4 {7 e7 e1 R! `9 g
( j + 1)

8 N& r& D0 Q; v. q# b1 p; C5 y# W1 w]
! B; r; ^6 v" I+ B# A( s' E# Q) v' slet k 3
( b" o; K) T2 v" klet power 08 H9 u8 J6 I6 H' `9 F) N7 h( N6 O  q
let local 0) ~3 l; o- Q  z* s& }! G
while [k <[trade-record-one-len] of myself]2 F5 a& k/ @' l* f
[
- k6 N6 K5 h, B! `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)
" Q' O. z4 c2 K4 s% G, F' kset k (k + 1)
# [4 \! X: M. n]
3 {4 W1 U! ~. S7 |set [local-reputation] of myself (local)0 U% o8 V( a; b! ?5 i. N
end9 W6 |- b5 E. t
, o3 T3 a6 G3 u3 p. Z9 Q
to update-neighbor-total4 j- C8 L- J2 Q: n* s% n

5 i: r8 Y7 l! Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( |# J  ]: n% s+ @, f

9 ^% V6 ^! [: z# t7 l. \

# ?6 l- Q0 [# Q3 N; ?end
* Q1 ~. |: z5 m  y7 c" o( S% P+ F. ~) r
) m/ `" P5 n8 ^! \6 O7 [/ |3 Z' |to update-credibility-ijl
* Q8 m3 L, j+ l5 W- @+ J" o# I
! y, ]" Z2 I. k. Y% 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。
; _+ J& \" s3 P7 {% |6 U! Llet l 0: I) `. F* \, B5 |
while[ l < people ]
9 t9 m  ?- T" e( }: R# h3 z;;
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$ z/ k. ~1 \1 g' X- E7 x4 ~: d, [
[; P6 e$ k0 Y9 j& A' D
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 D1 I6 z4 i2 h! ~3 d% c. Bif (trade-record-one-j-l-len > 3)  H+ A+ o0 m: y+ I; X1 i/ 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
: C3 n: z! |! B" s: M# k# Zlet i 3
7 s& D/ @4 h# z8 k" mlet sum-time 0
: K+ m4 r# r8 V& x7 }- I& bwhile[i < trade-record-one-len]
3 _+ C( N! N  M[
+ Q! y5 N/ n: @( Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 k# H. d$ U( i" m/ Kset i
- {* G8 V2 z# c( i + 1)
$ y4 `- Q$ e% K* o) a) l  D
]
4 h+ i6 w$ A0 x. \* Nlet credibility-i-j-l 0! I6 s+ Y' [+ i' h
;;i
评价(jjl的评价): ?6 G! |1 Z$ a, k1 a( J8 Q
let j 3
" i! y- p3 p3 b  Elet k 4
; S; j. A3 }+ n: f, F% N# b3 c; Jwhile[j < trade-record-one-len]
9 o1 o, e% Y6 X- S" @[
: ~. f* e( s( F/ Owhile [((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
; J# d$ k2 L# n3 ^6 W' Vset 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)$ b  k. b+ N7 v9 w
set j6 P4 k7 y% W& ~
( j + 1)
0 A/ a: l" j0 a
]6 W3 Z3 H" `0 C  i
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 H1 p9 C+ F! \; `6 i
6 v$ \5 T2 j) K+ A8 G7 u( l0 `

, r/ y* J" S! z# Z- Z5 Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% \8 G" U7 S5 k;;
及时更新il的评价质量的评价
4 P, f: v0 y/ H  l% \  z7 X: K, }set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ G" c; w% d9 z' D9 Q4 q& l$ `
set l (l + 1)
9 J: [. B% b& R( J0 w7 B" W8 |]. q4 }, s- x6 Q4 }9 ^# g- M  C/ p
end! }. o. Z% o4 ]! Y- V1 n5 ~$ v
8 n8 p8 `& w" X: \0 Y5 d9 M" d
to update-credibility-list5 N6 A) d# j  P7 N: u" ]# b
let i 0
- R3 b$ b4 \: j# A) Bwhile[i < people]
# X5 A# d. L. W; w9 s) y[2 p0 Q6 A5 |7 K8 ?* ^* w8 N6 [
let j 0
# L, v/ N" p" p4 n  R1 A8 zlet note 0
/ n: k! B, ?6 @9 z& x1 N1 alet k 0
8 J1 I4 N1 p9 k;;
计作出过评价的邻居节点的数目
, E# T% B4 q3 ]while[j < people]
: y# c1 s8 i; i' f7 c[
4 E: ~3 Y& B8 Bif (item j( [credibility] of turtle (i + 1)) != -1): b% a9 ?# X$ u- G0 U
;;
判断是否给本turtle的评价质量做出过评价的节点
8 ~) a, W1 s+ I+ D) H[set note (note + item j ([credibility]of turtle (i + 1)))
9 P- a7 f+ A+ l1 X6 d;;*(exp (-(people - 2)))/(people - 2))]

& L* S* {6 d+ Iset k (k + 1)
4 x6 F& M; B* N7 \]) |3 z* B2 m* H( P2 L
set j (j + 1)
0 G, A2 _* |7 d' J% C6 }/ ]]
' b3 R3 k. c- C2 T, cset note (note *(exp (- (1 / k)))/ k)
$ x4 A6 F, k! `, Jset credibility-list (replace-item i credibility-list note)( ~6 U/ c* x) k( g
set i (i + 1)
9 c0 e; N2 n  e3 T, J]% I' V3 v2 R7 `' Z) B( r; e
end9 _. ~3 ?5 z8 p* G% q
9 [8 N3 J; {; E/ g  n) p+ f* A, `. c1 l
to update-global-reputation-list
% A# M, X% n1 ~& T& O5 blet j 0  {0 P; g( R/ n% W: B* K4 X" g1 J3 s
while[j < people]$ A- u+ K* b* e7 B2 H) H
[
$ t$ x9 s2 Z2 z& h( Rlet new 01 d: S) j3 N' _. L4 @
;;
暂存新的一个全局声誉
3 s+ a* P9 [( |0 {2 T- o* Llet i 0# r7 b, s' T, V
let sum-money 0
3 p4 n0 O/ c8 _8 l$ Rlet credibility-money 0
( `+ L4 N& l1 B  ?4 mwhile [i < people]' s% V8 Z& H" |' I1 p- V0 q
[; @* _" q! @( f" w$ c  S5 y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# T. o* l, Y5 o: m" e, A, i" a
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): m+ _; W3 x4 \8 i7 ^" D2 `2 {
set i (i + 1)" V' b" I. Y( h% z. C
]7 m3 ^* z+ S# |
let k 0
/ Q% N: F  \* `  Ylet new1 0/ P5 D$ d9 H( ^
while [k < people]+ S# q5 ]' C0 M  {2 n" A8 }5 \
[+ h9 n# Y/ x% R* c( [: K! n- k  Q  m
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)
! {  W" n" F: p( O  Tset k (k + 1)% N9 H! L( ?. y1 m( L3 ]
]/ w* g0 F: V8 n0 q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) Y1 ~9 S# ]4 L( P4 Q; Hset global-reputation-list (replace-item j global-reputation-list new)
. j- r0 D% i$ S: w7 dset j (j + 1)
! L$ A+ O- o4 I1 L1 G' [1 R, I]
) {+ J6 k7 x2 b4 l& e% w( Oend9 @. V# Q2 i: p: f. K

* x  @- n: L6 f. i6 k& x+ ~
- x  e9 l% @8 o7 `3 v! B% j+ X# L$ I9 ^0 p" _8 N2 c2 q
to get-color
( |* H4 ]& }7 N8 `. ?# X- |5 B( n, F. N
set color blue

8 P, g1 d. V! g3 y& gend
( y7 H$ f' O2 X" B1 `( f; ~: F4 J$ o9 m( z$ V
to poll-class
2 J3 u4 r$ v  p2 i& Q% vend
/ B) x4 j; t2 w' [; Z8 [0 T7 F. {( @0 u: Z" K0 d% H
to setup-plot1
" t; E5 M# X* O  Q5 v( H
6 }* V1 f# @+ i) W9 mset-current-plot "Trends-of-Local-reputation"
- d8 @! Z4 B1 N' ~; y: i/ u8 E- W) }
( s1 u& v$ c5 @- S2 E" Q
set-plot-x-range 0 xmax
$ [, i) S8 T8 q9 e1 C) F
# s  e% E1 e, \7 L' z# R* }. H
set-plot-y-range 0.0 ymax
- s/ y+ D1 `; {! h
end
6 P' p0 Q" N" C$ P
) f) I0 b0 p* [! h, S8 Q- P! sto setup-plot24 D( U/ a) Q9 U

& _4 u0 ?5 ]* O* W3 Uset-current-plot "Trends-of-global-reputation"

; e9 S3 X, q' F  K2 [; p: q5 ?0 j( V/ \
set-plot-x-range 0 xmax

, c. p" K% j/ ^& D, ?- q& p
0 b8 [8 u, J( E, q/ o( Yset-plot-y-range 0.0 ymax
2 Z  d! L: G, l+ r& ^
end
9 D7 s' s9 ?1 |/ K# k% K8 d" }' h- e! [# [% Q9 l
to setup-plot3
7 `; Z! P. h$ A) n3 s2 H8 _- @
( b! I3 w& y# W* {8 A" b1 Iset-current-plot "Trends-of-credibility"
9 k) k6 X3 d% x/ J% P  g

" l4 v5 j! f2 h: H% h: n, a, Dset-plot-x-range 0 xmax
/ V4 Q* ?; H) O% S$ q
( R' e* q# I) C! Q
set-plot-y-range 0.0 ymax
# I  e8 F# T& w; b" P6 n% ~# g; ~
end
7 z* R1 o" W8 S3 v2 ~/ H6 Q0 Y% L
to do-plots
; y3 q5 O& q5 Q2 R& X1 p' Jset-current-plot "Trends-of-Local-reputation"
6 X3 X0 C: \' `; t. b1 cset-current-plot-pen "Honest service"
/ V# K) \8 A4 m9 f8 L) vend
: {( q0 Q7 |6 g( R' F* s/ s) C3 Z$ ~7 n& _
[ 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.
) i2 }- P  Z( n4 k  y) v4 o1 R) Y. y8 h3 U8 I1 l' y
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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