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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:  O) [: z. Y9 A5 {4 J; f( [
to do-business
2 `2 N. Z. ]. o3 B) U+ G1 K rt random 360
1 f5 @, Q! U: C, {. Y7 s fd 14 R* C9 y; N$ d1 s
ifelse(other turtles-here != nobody)[7 m* N  C! m0 o2 l. t5 l
   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.) a9 j/ Y, z. v0 C9 F: D( i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 c1 \7 \5 I! l' _; N' D5 B% n7 [
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) m. p. G+ ?$ c! d$ Q, m$ D   set [trade-record-one-len] of self length [trade-record-one] of self  k% J3 h/ B3 P: H+ B# G0 W
   set trade-record-current( list (timer) (random money-upper-limit)), k6 |, t! x9 K& ]3 ^3 X8 U
/ X, ^/ L# y! r9 i# R
问题的提示如下:2 o. Q# C, M5 v% R; K0 w" F

! K; D# V7 N, B8 K9 h$ W& Zerror while turtle 50 running OF in procedure DO-BUSINESS! [9 Y7 Q. v1 G) |! m1 G
  called by procedure GO
. v3 k: Q0 V  o. s  d" V" lOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 d6 `5 x% N. ?2 R1 {
(halted running of go). t; K: m) V+ I  k5 P

+ ]" n; T6 |2 q3 w% J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~~5 {7 t( E2 }" D, t+ 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2 X8 E& t$ C4 |3 c3 j3 y
globals[
4 _$ m/ b2 y( i* Axmax. v4 `" W5 L% b3 k8 p5 g& P8 j
ymax
4 M" {, T5 P7 fglobal-reputation-list
& Z; i( J# f+ F* Q% ~; H' f( E& \
;;
每一个turtle的全局声誉都存在此LIST
# Y# i- m5 i: e$ t; [credibility-list
' W! V  M/ ]+ K" }; s;;
每一个turtle的评价可信度; B! m; r# b$ a9 _# n. O7 x$ {) |
honest-service$ U. {3 d  y/ s
unhonest-service6 E4 K$ |# p% B/ w- \: S
oscillation0 m! l5 H4 c: s' F( U0 N
rand-dynamic9 C9 `( B' v! k( O  m3 \
]
$ ?- `7 m% r) y& B! ?! e
1 C2 _+ O6 ^+ {; M+ l8 O5 |& ]turtles-own[/ p" P+ q* ]$ q; }
trade-record-all
) u& T, T- P# v2 v;;a list of lists,
trade-record-one组成
+ [9 R! W* [% U/ _/ `/ k+ Y( R8 [trade-record-one
) w9 t+ u' b) R5 B* u( M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 @( ?4 N  U2 u- _# d
3 ~# h3 m* p( ~. O  [;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
8 ~' k1 C* e' v0 Btrade-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 {) h5 t: E& l) W4 x5 Jcredibility-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& z2 L' [: A. @) ?7 A
neighbor-total
6 I2 q, }/ M4 h+ @+ E4 f;;
记录该turtle的邻居节点的数目
$ V+ y; u8 I) |+ I- N3 C0 Atrade-time' _: e* Y* L0 m% f
;;
当前发生交易的turtle的交易时间
" K% Z+ C# R% \appraise-give
8 ?) x2 e  g" a: y6 Q8 x;;
当前发生交易时给出的评价" o; K, V% v* Q& A6 n
appraise-receive
8 W! L% a$ _% q- N. U;;
当前发生交易时收到的评价; M% @* q2 L& [! b- ^0 m
appraise-time
: T7 c' i. m" c. \2 _9 t. s;;
当前发生交易时的评价时间
* A) R. i+ f3 h: N" `* M% y1 wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- a: I+ T, \% p1 X0 D% L$ Ltrade-times-total
& l0 P. K1 `5 q% n; p" v: [* z;;
与当前turtle的交易总次数
$ A% X4 E! D, T: ~trade-money-total
; Q2 u" q7 f! J/ C, [  {) b. E  Z;;
与当前turtle的交易总金额5 s9 y$ z( F8 H- {$ T$ H
local-reputation9 `6 M% I' U  w$ m' r$ @/ z# ?
global-reputation
" D# T+ q9 B2 f( D: ~credibility
6 Z  @. d# d9 Y& E  v" Z! J;;
评价可信度,每次交易后都需要更新
2 b* \$ |2 E' G1 q$ b0 D0 vcredibility-all
0 I9 \# l. i( x9 q;;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3 M# s# @) [& L8 c) Y

) a  M+ z6 J, B' k* Q;;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% Y2 d; f3 ]3 E5 h$ j
credibility-one
" L# H8 ~1 I; F9 `+ l;;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# D" B9 j# Z- {; e
global-proportion
, Z2 S: F! N6 bcustomer
1 o( q  V) O  M( ?! ~" F; k4 R8 gcustomer-no
7 e/ Y& `8 L9 k6 F; v/ @7 m7 h) Ptrust-ok$ ^" @4 j" M: E+ {  Z
trade-record-one-len;;trade-record-one的长度
; V, y, Y8 C; F  m, B5 _" y, e+ U, _]3 _- Q$ Q, {8 G" E; H. F& M5 r6 l$ W
# ^% b& J  |( B* T% d
;;setup procedure9 W* t% {1 y" F! c1 _7 M
0 c$ O2 \4 t; _, s* R5 O1 [" S. ^
to setup
8 ]& ^( M3 d: {; N$ V5 A7 c* G5 W3 {& k7 Q
ca

+ U/ K, c# ^2 M
+ u( y) n; v& C4 s4 dinitialize-settings
* F$ w" M% ~" u/ Z) _2 {) y

7 I$ A5 t0 b, {& s% Acrt people [setup-turtles]

5 I& R- @: W  _
6 ]4 y4 Z( L& _! s+ v" ?' creset-timer
+ B6 T! }: q3 `& d$ \
- d$ a; v9 }2 q' l
poll-class
( h' ?; F  |/ c; z$ t
. ^4 Q- j5 z8 T/ g
setup-plots
; I! A+ u" ]; Z. M4 z; n

- j5 T& Z2 M+ cdo-plots
0 C9 T3 W/ ?* K' P& P
end
) _1 |) ]+ v! W% k1 p% c& q
; O  M) i& j/ N' \! Pto initialize-settings' ]8 h/ G0 r. y
! O  U6 J4 M$ W/ u/ u6 H
set global-reputation-list []
! x1 s& O  U6 f
: @6 ~4 u1 E7 F- W+ @
set credibility-list n-values people [0.5]

4 {" ]' v" w" Z9 \* @8 m! L  ]/ Q: _
set honest-service 0

; e4 d- A9 o. |# L. c0 }. Q  V$ X4 W) L: R0 s
set unhonest-service 0
; n+ U* G! y$ `% M9 ~  c

, x# Z$ r4 y% j2 A/ i, O3 s8 xset oscillation 0
# O7 w( b, b% T8 s4 c
+ X- s( ?. T5 K& i0 s$ R. s
set rand-dynamic 0

8 h; K/ t" y3 s% A: M0 H2 }end
7 E2 {6 |4 M$ Q" `! Q# @
' G! m  n& @4 u1 y$ e/ ]to setup-turtles ! E  |; E( {: r7 x6 u
set shape "person"
# s( ?1 [5 u7 psetxy random-xcor random-ycor9 w$ {4 M( ~7 S- H0 g
set trade-record-one [], t# u% f8 ]# Q9 x
0 r& x8 r3 _- q- N+ X7 U, T: C
set trade-record-all n-values people [(list (? + 1) 0 0)]
& N' S3 n( Q! A- w; T2 U
( T' Y1 C9 n; Y* B2 x
set trade-record-current []( J3 R$ W0 D' ]
set credibility-receive []7 ]8 |, b! {8 w" A  E5 G4 s
set local-reputation 0.5
+ M2 E3 U2 o7 a% y9 Q+ b; Oset neighbor-total 0
! m# J! L7 r/ ~* R' m% uset trade-times-total 0
) W  o: D+ ~2 Lset trade-money-total 09 L$ T! D  D- C
set customer nobody
" j9 _8 D: R# G2 Xset credibility-all n-values people [creat-credibility]
% m, P6 L" Y8 wset credibility n-values people [-1]0 r8 Q; `- o0 L9 Q% B
get-color' a  m, u; m5 I, q, ]$ S/ _

/ M5 \* q: G0 V7 Q' `5 @end* C  c, @/ @& a% c0 X  j' p
) Q# @$ j3 q& k4 x8 V' b
to-report creat-credibility& ^/ s& X7 A* A0 W# W& P) A! {. I
report n-values people [0.5]- O# z- i. Z6 s" o/ ?3 I9 X2 S
end
5 `/ o# s; {7 a8 s- n
7 |. s  @: c) E6 |: \/ a) `. `to setup-plots
& [7 r6 X0 G2 c! ]6 F; d, |) P; K/ J8 [# w
set xmax 30
, x( S( |* D5 D

2 u6 v3 n3 c/ }2 g. W% d# r. ]set ymax 1.0
! I! {" B+ m2 P0 N3 d
. A+ K! g; O. Q2 q0 l7 a
clear-all-plots
: D: r# b, H( n/ R  O

- F) K6 N5 Y5 r* [+ Ysetup-plot1
7 a& y* ~  [, ^

5 |( M; W  i, C% ^& @: |3 N1 C. usetup-plot2

2 l8 w9 M9 G* m- ?. ^  {
; R, }/ z6 ~( e0 L1 X$ Jsetup-plot3
3 B0 [6 z3 X$ n6 W5 Y! W
end* o8 T! S; {+ x2 x/ \  K& C

1 F2 b3 k; g/ p9 w; R/ A;;run time procedures8 s7 l1 i# Q# \0 J5 D9 h3 p3 M, x

$ J6 o! w0 I6 q* n) q1 gto go3 Z$ p3 B0 Y. r! y5 y
" G! F) }) A. E- g  m
ask turtles [do-business]

) {7 y4 b* l: s" Kend
* P, {: q" i6 W; o- b: P' K, y2 y6 V) I" f$ k
to do-business 1 z, e2 }% X  g3 E  Q0 @

$ I5 t: B# f" Z; N  `! h2 w" K) t* z$ ]
rt random 360

- x4 H/ \* u: r( S1 m$ Z
% m+ A5 p! ?! f* Jfd 1
, C. s9 Z/ T% R. E
. M5 @1 S! `( W5 S* Y
ifelse(other turtles-here != nobody)[

8 Z' I# `5 U+ L6 K
1 `/ ?1 D# Y, M& g( D% iset customer one-of other turtles-here

1 u2 ?& J8 h6 r
. j7 X3 Y& d: J- w. a: ?: ~;; set [customer] of customer myself
! U" Z: Y+ a' g0 a: ]& k+ Q
; N( x; D$ j' n/ o  q
set [trade-record-one] of self item (([who] of customer) - 1)
; t* H9 q$ L3 i. n  t[trade-record-all]of self1 R- ?7 V. R2 f+ E
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( G' ]/ Z! I2 [9 W. C( A$ \3 i2 `( _8 L/ o; C0 {
set [trade-record-one] of customer item (([who] of self) - 1)
! @4 u9 o$ ?5 T  J1 k[trade-record-all]of customer

+ [5 T4 O* h: ?0 G: ^! K/ j0 @- x
3 J' W4 J* M5 V, _6 Z. {# s/ @set [trade-record-one-len] of self length [trade-record-one] of self

, Q( V' l* h- ~- p7 e2 R
6 a( q- T% ~0 F1 \1 Q7 S0 u7 Nset trade-record-current( list (timer) (random money-upper-limit))
* n: S4 Z" S- \. g
# T/ M# E# K& U! u, k2 O
ask self [do-trust]
' s# H% |! @& z- l% M& _- ?# H9 k" {;;
先求ij的信任度
4 Y+ x- }+ S9 l* }
# _5 i8 R" x/ D) v+ C- fif ([trust-ok] of self)( \/ D# B" S4 d, i- r4 V1 j8 C
;;
根据ij的信任度来决定是否与j进行交易[
7 f+ j0 S5 ?" k, b2 \7 aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ A4 p  h6 O) Y3 E/ _6 b

0 F0 l) F& h3 O% o[
% w  e# K& V0 l: W$ e; Y& u0 r
2 t5 v' v5 x' \& x$ s% w2 U
do-trade

5 _2 b5 m5 j) e- g0 M- s; Q
, u8 i& H* }% Iupdate-credibility-ijl
* M  i0 H9 Y# Y1 Q# r* n% |$ B

( u5 d: M: g8 K2 w2 A8 dupdate-credibility-list5 a3 Y# g- b4 E+ V) t
. ?8 u* \6 j0 s4 d. t6 [

+ T; ?8 H% V& ]update-global-reputation-list

4 i7 R6 ~+ x. X
' C$ Y* t6 `3 m4 u+ W" o4 L6 qpoll-class

8 ]; ~" y7 K( N8 v/ w/ A4 \
3 Q. f0 O. u% e) H8 s, O% e  lget-color
" X( g/ w* [' b: n4 x( ^# X8 h
& `2 _% I( O) @7 U/ U
]]
1 M$ z% G* `- _5 C# C, e+ v5 t# u; ~/ E# h: e. }' E, _9 J
;;
如果所得的信任度满足条件,则进行交易
6 j/ g+ k9 p: L* H' X) |3 g0 q5 z# G9 Q
[
  y# {- W; }9 E) s/ d7 o

* F- d7 b. p( B8 Y3 Wrt random 360
8 W" w2 l7 l% {. |- z2 u
& `3 B* L0 W8 |# S5 N* }
fd 1
, t, P" I# z* f& ]

6 S" t% P" J% ?; b( {4 i2 J( P]
# Y3 `4 v- C- I8 x
6 [" G% g, B1 h+ `" I7 u/ B% H# X
end
7 a" T2 I  d- s/ @# b
& S4 ^- [1 C  R* \. i! T# I
to do-trust & a/ Q7 z$ z( \) X+ ~
set trust-ok False, r& _4 Z) j: i# n7 z

% U6 I/ O# _' I7 t) H* }% Z
$ L* J( n0 W+ S
let max-trade-times 0
- F, k* q" y& H% f: ^: |& ]; ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 C1 g. A; z, T7 Dlet max-trade-money 0
7 W5 C* ]; [( s+ M; _# T9 ~0 k3 Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' s' o* f' f/ B/ Klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 M5 r( C( {) {$ q  y- H9 e8 _4 b) t

. E# M! K% t5 n3 k3 W" V3 ]

* m2 r" I3 |* ?4 p& }get-global-proportion- R+ ?6 g- R- U. }* c
let trust-value4 {# s3 W/ ]# f0 F. [0 L9 K
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)
3 [: {- {' `) o5 H& P3 y3 y
if(trust-value > trade-trust-value)
& H7 W5 u6 w6 z9 v7 |; W# G[set trust-ok true]) v, ]  A2 H9 E) r( f4 C
end
- _" p3 A9 [, }
9 Q; [# O" y5 B3 ?( r. Rto get-global-proportion
4 |5 T9 e* \3 U, fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). S$ k# w1 T6 Q& n, p
[set global-proportion 0]
' g3 p2 O& S/ w[let i 0
7 F$ I6 h* n) c2 _let sum-money 0
; T( A4 v  L' G3 awhile[ i < people]$ l8 o. S6 N" [" G
[
- Y) [% B2 n  V4 gif( length (item i
+ T: E+ `! g9 o$ x$ D% n, S% C[trade-record-all] of customer) > 3 )

* c# c3 k8 J0 h. l' `2 T) @[2 R. d& d& e" X1 d0 f) G' b& u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" G9 o" u/ B7 A$ g: []
5 g: o9 p* i/ K: i2 Q9 W]. W# N$ l3 o" q: t8 S; \3 V# [
let j 0
; J  K8 V% Z$ @2 m: y. Xlet note 06 W5 d0 f0 ]' T- k5 n4 R( t: L
while[ j < people]
# e/ M5 U' {4 U* C8 j) t[
1 O' {- f& x3 Sif( length (item i
( z: Z$ K7 H# S8 }# S5 h6 J# b" B[trade-record-all] of customer) > 3 )
6 a$ @  Q) h$ r: {" ^$ y$ I
[
! O* \+ c- L# k: d$ `# d+ o) Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 T8 z) z: J+ s* W) y7 t! u2 E# z- a[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  G: F6 Z# E% W: r, M4 w  F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: u- x# y" ?, W" s
]
* D+ d9 C: B8 p4 x- |]. \# H# h) P* X
set global-proportion note
9 }' _- Z% b. H( J+ e]
& E0 B3 f% `4 V5 o1 W$ mend
1 q4 V" ]- k7 \7 J2 b8 Y. j9 o. O  J) D9 Y$ Y9 j& J4 D
to do-trade1 v, c/ j* `% F& t) o/ F
;;
这个过程实际上是给双方作出评价的过程- }9 B- i* h0 ^+ d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# `5 e) E6 u/ S9 z, \, O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 m' R8 V7 i- Hset trade-record-current lput(timer) trade-record-current
1 f2 G! `1 A" D7 Y, v2 J;;
评价时间
- A3 g$ Z  T% ]3 E8 r& V/ _# m$ Eask myself [0 j  I. `( d9 w. N, Y$ O9 k
update-local-reputation
( l) |2 Q+ O7 C% e  N1 I  V2 h, pset trade-record-current lput([local-reputation] of myself) trade-record-current6 U- z+ L; X) g$ \
]
7 x* ^3 i2 m- r7 c' Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 n: Y% \3 y* H9 a$ F; H1 Z0 ~
;;
将此次交易的记录加入到trade-record-one
9 V5 S# D3 W. u" a  p$ Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; q; }  I# y3 G/ K, elet note (item 2 trade-record-current )0 V4 p# x; Y' W1 L% c; ]
set trade-record-current6 s" a+ B* T/ g* O
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 K7 L" O+ n" S* }# a4 {) O
set trade-record-current
% e! I4 E' a9 h- f5 A: h8 ?(replace-item 3 trade-record-current note)# w$ N0 t" V0 O- Q) i
( ^6 J4 a& u1 Y4 u4 H
0 o" M5 M3 Y6 m+ r
ask customer [
- D8 @; {6 C6 G8 q7 o8 ^update-local-reputation. \/ J7 u( j$ e( _4 v5 e3 `
set trade-record-current
  h  ^% i4 A+ C/ \- Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" E' n* z# K( x
]
0 Z% H% S# S& ^6 m  T
7 L% d1 B$ x) f
9 n! ~& z; ^7 g; c3 c' j
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 z% c: z2 j% o( X: a) B; \
$ k3 E0 ^. R% v# h- I! K# d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 _: R2 Z+ G2 `
;;
将此次交易的记录加入到customertrade-record-all) t" \7 V! f; A2 t
end0 o1 x# x$ T" F- L+ Z3 u

/ ^1 |: O: J9 [* l+ ~. H$ H' Fto update-local-reputation
$ I  x( I, G( N! nset [trade-record-one-len] of myself length [trade-record-one] of myself
4 T( r; H! h0 X0 @9 @0 o. {  v0 V# N- ^! V
8 P. Y0 k( s4 A6 ^- t4 J# m# n
;;if [trade-record-one-len] of myself > 3
* Q$ X& N9 A' C. k
update-neighbor-total
' v' S$ |& F) t: ^;;
更新邻居节点的数目,在此进行
& U+ }! Q) {+ _$ e3 s2 wlet i 3( X4 q+ G0 q/ f. L3 c  V& i. w( p3 K
let sum-time 0
, U; f, O! c; K& [  ]/ }while[i < [trade-record-one-len] of myself]0 b; C0 K( M4 i& I* ?
[& I2 j$ c  ~& s6 w( E+ A% i
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" Z; n6 H# M" s% s( ^1 M& Zset i4 \7 W& n: q, H; e( W1 Q. \& E1 w
( i + 1)
6 y: ^% L2 ~' O! C/ @! B7 O
]
( _$ ~5 }( L0 X" |/ E" m- \* v. m, _let j 3- m% C9 f4 r4 W9 s+ e1 v- [: G
let sum-money 0
9 y' B4 x. b$ S. Mwhile[j < [trade-record-one-len] of myself]2 y- v+ ?% I; A) F) K: j
[
- _6 n% u( K5 n1 _, Eset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
8 U) }( r' ?& j0 Z1 qset j2 h0 A/ f+ H4 U1 s
( j + 1)

2 k) A8 i7 h2 @/ F4 X3 b, H7 q]
& U$ I( L7 j6 A1 W; Z1 {2 slet k 37 E" u9 |2 j" S
let power 0: P8 t5 [, h. Q
let local 0# w6 T( R2 W% \
while [k <[trade-record-one-len] of myself]8 q  A# L, L$ F& n) @, G3 W4 v: R
[
& G6 J4 ^9 [; C& g5 ?4 gset 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) " i$ y2 L0 J* V+ O$ T4 A
set k (k + 1). h9 d# n. J4 v! X. l! T
]' \5 H4 K! ?. R# P: H6 {0 p
set [local-reputation] of myself (local)
3 d% X; |/ x' B& D( T' Aend
# x( P8 D6 w7 I8 I& h4 y5 H
0 [3 h9 }- l% s: l, S( m1 sto update-neighbor-total
% r# o8 @6 W* f
+ H5 C$ z% z; F% kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% M8 f2 X, V6 b2 e5 T
- h; S/ I+ N: `  K; e1 o

) J( I; j* Q+ o/ V# S# r  o* ]5 H" Dend1 a+ r# q0 T, B
" z- V; R4 B2 S  T, c6 D
to update-credibility-ijl
: k  `7 {% d) d+ Q+ g0 n
9 A% U2 }# a( i' U7 K4 T% B* x& m;;
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 G, _9 j1 E: o6 _1 V' Tlet l 0
, r% K4 j7 g! qwhile[ l < people ]
! t# A  Z6 _- c6 Y! g4 I) X;;
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
/ M; q7 S, e. [; ]- o* k) O[
% O* t5 h: W1 ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; i1 M( F7 C; ^5 k/ O# [# \% n# \9 gif (trade-record-one-j-l-len > 3), S+ C2 C3 w6 W  |( 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
% ^* ^1 \1 N1 o. Vlet i 3
) P' t2 p7 v' f  o' P. s0 ^6 Mlet sum-time 06 e. N# h% e8 S6 ^
while[i < trade-record-one-len]/ Y) o5 ?# h; `/ ^
[: M5 @' e: h+ C6 s. ]9 @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): P* ~) g/ T, G4 O/ e
set i
9 r8 E9 o: G# \( R$ @8 }( i + 1)

. r1 J$ Q+ M2 x9 G' B]9 I6 \2 Y4 l! _: H0 l7 B3 ~8 c
let credibility-i-j-l 0
, T- i4 y7 J# Q/ h- f2 [' y9 e; O- F$ ];;i
评价(jjl的评价)
5 r* P1 u5 _4 Rlet j 33 u6 `3 z: f% `6 E! t$ x. o7 @
let k 43 D( P" A8 {. I) D
while[j < trade-record-one-len]
# ~9 L- [3 o( J1 t# k, u5 i7 l! b# M" g[' x9 _* i* o# t0 W* R5 z# o9 }
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! E& X$ h$ G8 Y' @$ a
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)9 w# s1 y7 b4 P. A% t# ]2 |
set j& H  L3 C/ y! x5 S+ S& M4 P
( j + 1)
% h* }  S9 U2 u# U
]
& k! v7 W8 Z7 S. s& `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 )). [& N! b. X% i$ \, z

: H  p/ T4 y7 e4 {# X; Z
$ Q& v. p* @+ L8 p5 _, W1 R0 E
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* c: w; m7 H2 ]( i
;;
及时更新il的评价质量的评价
, g' Y# [6 n1 x# f7 R4 k; Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 B6 v4 i  i% A( {; _- o/ J
set l (l + 1)
$ }5 I/ T( r" F7 }; ?; q]2 E* P) }. c0 F2 g4 K
end/ a! H* N4 L: g. j' |
6 W5 a) F& e3 U" A0 J7 _; U$ o) `
to update-credibility-list
6 b1 c. S5 }- ilet i 0
6 g% J( T* `/ D) B7 F; awhile[i < people]
( G) ^4 ?2 o7 v: T# _3 A, t; V[2 d1 i! }6 r7 j, k( B( v
let j 0
8 ^$ ^: }% j$ Flet note 0
  N5 q4 E/ Q" C9 G% z: M, }let k 01 U; d+ P4 z( z( Q2 x
;;
计作出过评价的邻居节点的数目
: b5 k* c8 n( _0 L$ N& L4 jwhile[j < people]# ^. U! s  J8 ~/ m, h/ i
[
) F8 K0 P* ~9 @9 p, L3 w8 ]3 Tif (item j( [credibility] of turtle (i + 1)) != -1)6 O. Y; q7 p% e1 J3 ^6 k) K; J
;;
判断是否给本turtle的评价质量做出过评价的节点0 p7 U; t3 c- x) |
[set note (note + item j ([credibility]of turtle (i + 1)))- l. D  o' L( ?8 v. f
;;*(exp (-(people - 2)))/(people - 2))]

+ _/ g$ E; w! e# r$ `+ Wset k (k + 1), `. S6 w# H, t9 b* @$ O+ v
]
( e: g* g: U& a) O- l' A$ n6 kset j (j + 1)
& }" O! W9 ^. K, Z5 _5 E1 \]
6 C# F: g& R' H. L1 n" z: l0 Z8 Sset note (note *(exp (- (1 / k)))/ k)( S7 q2 E: v6 A4 Y7 ]& y
set credibility-list (replace-item i credibility-list note)
, S( A- e8 m- b6 K1 nset i (i + 1)
- [! q2 S2 p. \8 Q]( C7 x2 D) S0 j
end2 V5 N) r" b& H+ V

0 x" E; ?, l# Y+ U6 P# s7 z0 Rto update-global-reputation-list
: ]" E0 |1 b; ^) Y* `3 _8 x# ^( ulet j 0
. [% \* Q- J  g9 c' }while[j < people]9 Y+ Q0 i1 Z3 ~- \6 ^
[7 V$ J, R2 `& T  B; d4 U' V6 F
let new 0
6 o" A- I7 X' t# ~0 L" j' ?;;
暂存新的一个全局声誉
9 O" V9 \  F  o, a. g. ilet i 0! r1 U. i% d( x6 f4 U% e
let sum-money 0
3 n, M5 E: s  j9 A! Ulet credibility-money 0
+ u5 b7 j+ N( e* Y( owhile [i < people]& w3 ?2 w2 ?! E0 T  k$ A
[
6 }0 e$ p7 y" ~' N- }5 S, mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); y% E, s7 A' G! p5 U, Y* ~# n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ K; n' B) P. l/ a7 t; c/ L; U
set i (i + 1)+ n# b( Z/ y- Z9 n6 V
]
( ]' P; q- k6 J$ Ilet k 01 V5 r* S3 G6 W6 n
let new1 0) X/ w+ Y7 p# X0 V  ^# A8 s; J& b: G
while [k < people]
+ w7 P, F3 p" i# W[
% K# E5 d9 Y' D6 N, ~- I+ J% e4 Yset 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)
6 d* B/ y3 M. Q; W, E% s* Gset k (k + 1)
. a$ L; Z: s$ l7 E# F]5 J; ~! s4 [" S. D. l, t% A8 Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ [; [* T4 ]4 j. W# H
set global-reputation-list (replace-item j global-reputation-list new)) B: f! r6 i& V; m! l
set j (j + 1)
! f3 e  j  d5 V5 b/ Y  m, l]
: G+ K0 j  G! m% {end2 o( A" f) P- t
' d- A5 F' L& Z) ?4 \  b

$ O' \2 R" {# a( v9 m  N6 x$ b, k
! z. o! T3 c8 T8 q1 tto get-color
3 Q1 x/ ~  J; S  w4 n
9 l1 u* N; p/ @* F; N9 ?8 ^( nset color blue
- n% y: d& G8 g5 s2 B- ^# ^
end
2 G8 w5 F% K2 ~0 _8 s* V
$ D% T( e3 i4 h6 a8 eto poll-class" ?8 o4 n0 W3 I. w
end
/ x( u1 x  S; z) x8 t0 [" P9 \. j% e  f  m! f
to setup-plot1
" d# T3 M$ r/ o
) w& m/ o; D5 k! P+ m% sset-current-plot "Trends-of-Local-reputation"

$ y3 a/ q5 I3 o/ I
! G& Y" y  `; ^( ?6 Fset-plot-x-range 0 xmax

# H( O/ A8 v# u3 G; T% Z6 n- U: y: }5 t& C% D
set-plot-y-range 0.0 ymax

+ N4 p8 e2 K# }8 Y7 }2 \end$ Y+ z' Q2 `3 k4 Q
/ ^* H" b% y$ h7 k
to setup-plot2
; ?7 R3 {+ I8 \/ F# I0 O1 c* J. X% `6 Y) Q; o5 V, w! f" V3 J& g
set-current-plot "Trends-of-global-reputation"

/ x3 b" D% b) @% S; p
- C5 \5 h: R" k* aset-plot-x-range 0 xmax

% F$ H+ a' l/ O0 M
* |+ }6 ]3 Q3 V3 ]$ W7 Qset-plot-y-range 0.0 ymax

  S7 T, u; S/ l' T6 F/ xend) q) H0 `. ?" I. `$ J
4 F7 [+ s# Y" k; C
to setup-plot39 e+ R$ @( z% v2 o; g
! y" _8 j4 I) c! _) _5 w
set-current-plot "Trends-of-credibility"

) a1 e( v( o5 b5 a" C$ I4 p% n# w% _' }3 m" v& M, O
set-plot-x-range 0 xmax

' y  i9 i7 m+ j, N. [* i; ]6 i
, t3 l7 e& B3 c* I- tset-plot-y-range 0.0 ymax
+ g# T2 ?) C8 ~3 @( a
end8 w9 Q" h1 A+ y! ?7 B

9 V, j8 ^1 E) }. cto do-plots3 {0 v4 K$ ~) D' r
set-current-plot "Trends-of-Local-reputation"
$ ?1 ]  ^! s0 D0 r+ Iset-current-plot-pen "Honest service"2 @3 s7 {# u9 g7 N0 t9 N
end
, p7 I5 m* }+ n8 L% h* @7 h) A; c1 i: ^6 e$ \
[ 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.
9 J' I  Q1 I& Y# g4 i  s# e. V1 s; o1 t
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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