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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:9 i# M( J; @' k5 O% c8 |
to do-business ' `, F! W$ a$ x) i+ v2 v
rt random 3605 T* i# A1 ?8 }2 {( g( G
fd 1& Q" w3 f* n* E( E5 \
ifelse(other turtles-here != nobody)[/ c4 s8 G" e' j2 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.; e) ~; E- e4 b: I9 Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  N  ~- \7 K# {, M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" K; W) _( ?; H   set [trade-record-one-len] of self length [trade-record-one] of self* R4 h( q+ s& ~4 L
   set trade-record-current( list (timer) (random money-upper-limit))1 v! r, F6 A3 p
& Y$ G" @* g% g0 `
问题的提示如下:
1 ]7 D( m4 z  Q: }0 [# s5 H
2 j# S2 B2 K5 u6 E) cerror while turtle 50 running OF in procedure DO-BUSINESS
0 S/ E6 p, [$ ~; p$ u2 y; b; M  called by procedure GO7 ]! x$ `; V* J1 _) w/ ?% |% T( @* f- F
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; d1 ~* R! R! M: i2 r, B/ O
(halted running of go)
) C: L( X( H) e# F. S
  g* v) @. ]+ x, K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~~
8 y4 `# z6 X2 G: A  W$ k( C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. T) d) b  `1 `& O4 e
globals[
/ ~: F$ |6 y6 C* xxmax
4 v2 m9 w  _- @ymax+ O: a8 _; S4 \6 |, J
global-reputation-list$ r$ R; d) U# b

4 Z+ Y8 |; @5 l1 Q3 H;;
每一个turtle的全局声誉都存在此LIST
( f8 R. w+ z) }credibility-list4 r, _5 L& h. ?: u: G
;;
每一个turtle的评价可信度- M0 T& Q! x$ y1 ^+ s
honest-service
7 }9 _! ^) g: }unhonest-service
" w9 H) r$ v' b( }0 a) koscillation
0 J7 X: A! o# Jrand-dynamic6 _* t6 K( L  P( K% }. `( r3 l, z
]6 ^/ P( h1 u. c6 E, S; U" {& ^
& T" u8 R% y0 q; [
turtles-own[
& `, |1 b+ U1 W# x' `, G; V% m3 Ztrade-record-all+ S8 n7 ]& j3 L8 ?
;;a list of lists,
trade-record-one组成
; t! d- r) I+ [3 h4 Z7 Rtrade-record-one! J; @# N7 X! [% a
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 W: [$ E$ [$ _4 x3 x5 Z: H2 l& E! b  I( _% k8 n; S
;;[
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]], i/ M# ~9 a% ?7 K( f+ [3 ?
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]
% ^9 ?* \2 K' ]$ t& 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% F# y( e' s& P' R
neighbor-total+ u, y# m$ o4 L5 j/ [
;;
记录该turtle的邻居节点的数目
# i5 @8 q9 V! Btrade-time3 w0 R$ e# Q! L( J) i$ t/ ?2 V
;;
当前发生交易的turtle的交易时间
% _8 v6 v( ~" u- U7 W8 z+ Y- jappraise-give
6 x; W- b1 l/ Z* ]% K;;
当前发生交易时给出的评价5 {5 ~6 r& D  Z9 o2 j; \6 G5 O
appraise-receive4 h2 e; L  d% I) W$ S4 E  d- A# ^" s
;;
当前发生交易时收到的评价
* x# c  T. Y% _: ~* C& ]' D5 mappraise-time
( S# P+ s$ u4 r7 B' w) F;;
当前发生交易时的评价时间
  w+ y  D+ L" T; F- vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ Z1 U' ?5 b, G1 o% m7 G/ V* e
trade-times-total( k- P: b4 p+ |& w2 _. U; S# d+ k
;;
与当前turtle的交易总次数; \. Y1 A7 A0 S. \' ]- g  Y+ Q
trade-money-total
, M/ S: Q, F+ {! Y% t6 @% f. ^( Z;;
与当前turtle的交易总金额4 ?: o& n; c/ e9 @: r( ]
local-reputation
( w1 f3 g2 J- a) A8 s7 w8 l1 G3 iglobal-reputation$ V) Q2 j/ J- i
credibility
' S+ p3 H7 w+ X& ~2 x8 }0 P. X. \/ C;;
评价可信度,每次交易后都需要更新( R, t+ j  O3 |5 s+ w
credibility-all. W9 f" H7 c  E  N! U. w3 `3 X# Y: r6 L
;;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0 p; L; b& h) }5 p2 p! o

$ X& o+ h" Q8 x8 B;;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
( _" E3 O4 R" O& y1 X9 mcredibility-one
% k9 a) \+ E( e4 I! C;;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
! p. p" C- K- Q/ F9 t5 Sglobal-proportion
" P& Y) C/ L  z) B4 J) }  V6 ycustomer+ d' J9 W6 w- h" u" F8 Q) P
customer-no; A: d# s4 B8 J
trust-ok
5 n5 H) a! Y- Q1 q9 gtrade-record-one-len;;trade-record-one的长度! ^/ p" T% u5 o6 K. R1 O, z& e* s
]9 G3 \* Q" T8 y- [

& c& e7 u5 j: p" z. ]) q;;setup procedure
! Y& Q1 {) {7 D' u6 Q' ~$ @, N6 [
to setup- y! G5 V: }3 b: f
! o0 u* [4 j" e
ca
# u+ ^5 a2 o7 V

/ \; @" G) y& |0 Q& X: Ainitialize-settings

( J! f# ~& r' b& _" T# t
- D; Q/ X8 J9 ?crt people [setup-turtles]

; E# u# N% W0 f6 j" |" J. T, d4 v% t0 s: ], u
reset-timer
3 y" c1 A# [' U6 }/ \
, p& V/ G6 O; V0 K
poll-class

% Z0 Q' a- ^" l9 r6 a: M- N+ W% Y8 N# ~7 K( a3 D) ]$ f
setup-plots
* `' v" K( H9 c; \! ]; }# W
' L7 {% ?" k9 w- p' P# ]8 n
do-plots

: H8 L9 M# E: s$ O, Dend6 w2 B5 d6 ]4 |3 r

) ?# z* H- G7 U4 rto initialize-settings
9 g$ m4 X* R- C) w( R% p) Q, z* S4 u  J6 C; {4 A; G; k7 U. z
set global-reputation-list []

7 X( u, x1 v+ O7 z8 o7 }; j2 M' X2 w- P- H3 f4 _
set credibility-list n-values people [0.5]

6 V! Y8 X% [7 d* E+ p2 J' O3 n9 k/ A* F; O1 C5 e7 @, L
set honest-service 0

8 j8 k: k! j* r" g/ Q6 I* g1 L! Z% C
set unhonest-service 0

0 P( [9 x3 y% U  N& _! T' h8 t
set oscillation 0
% G: \4 Y) E' Z# z4 o  K6 Z/ z6 t

0 ]1 m  a0 W. _set rand-dynamic 0

& R8 |  k  C8 @0 e9 ~4 Lend
( x: K  E$ v! J4 v2 `  q9 m
9 U: z' a- `; k' Hto setup-turtles 7 V' {0 R3 |8 {% D1 a/ m3 O
set shape "person"
3 B- J4 b& ~3 @# ?setxy random-xcor random-ycor% |% V9 ^- |# g6 l1 k5 f
set trade-record-one []
9 ]0 t: ^: }8 a1 ~2 k9 ?. c

+ Q* D% S2 ]) ~! E( E3 V& Uset trade-record-all n-values people [(list (? + 1) 0 0)]
& A3 G" a# ^( V6 q* C. R% P  a

3 h* i$ `: m2 f' l& j: ?' L2 ^set trade-record-current []
3 Q. ~+ _6 E2 I) J5 p. @  Q8 x& Tset credibility-receive []
) f- P7 m) E7 d, Dset local-reputation 0.5
- c! J/ e5 [* a( T8 w/ P: B' Lset neighbor-total 0
/ D& I7 M6 S0 W( p1 A. Vset trade-times-total 07 [  t( d& O6 ^5 j3 A2 c: H
set trade-money-total 0
- v1 Z0 N: r' Y7 B4 _3 W- iset customer nobody1 \2 L3 m5 _9 i$ C2 \, t
set credibility-all n-values people [creat-credibility]( `7 `3 h" s% C3 A( z8 K6 `& f8 u
set credibility n-values people [-1]
' ~! u' O8 A6 b" ]- ?# Z9 x9 hget-color6 d; s7 P* A, x5 P( T

, A( W+ f, @+ K4 \, c* n  t# ]end3 e! t" u0 Q8 _! G1 m" T

* g& n4 r, m% xto-report creat-credibility/ `6 T% b& O, ?/ w7 d
report n-values people [0.5]( a0 P* H. U/ G' L  g/ V
end: d* h8 A" b# F+ e3 {
. [7 w3 Y2 `. g/ r( F# S
to setup-plots
+ e8 M0 n, K/ @: e5 P9 p' X
4 U! K! {" B- P. `set xmax 30
3 d- K0 V6 |8 [: F9 p7 _
3 J+ |+ E; g' Q( d0 S. Q& Y
set ymax 1.0
  d% [: X3 j+ d( f4 N# q
4 y  z9 |, a4 {: c: V
clear-all-plots

  `1 c, O& f# y- a  A, ^' n+ U
0 ]$ i& x/ C! a9 l7 M1 ksetup-plot1

4 ?/ o6 ~; C. e; w: X: Z. ?: D
& i7 ~1 P: N+ {2 L- tsetup-plot2
4 K# e4 `" t. M. L" w3 u$ ?: I9 B
! t) s  o. Q6 f) [5 u
setup-plot3
  N6 k1 C3 d- E+ F' x8 q
end
) l0 X( l2 F, t; b- c& ]; j8 w0 }8 R7 {7 |. V4 i) N
;;run time procedures+ G- G( O: |) M2 T

1 o2 z5 x1 u& U: O" r( f5 R) [0 Eto go
0 z! F% e' L* S2 v$ f
% ~: s8 T" E: F4 M; jask turtles [do-business]
& m: E) [6 ?/ `9 i: E6 `* A
end
1 |) O0 @, A, ]. a/ |
" {' M. M, p* wto do-business
$ U3 h: I# k/ b% |$ j) C

# N1 G8 t9 B, p: |
. X- y) P# p% g* b0 l7 n6 U7 B- Wrt random 360

+ [( g/ v$ [- G/ f: v8 O; o+ S: X8 x$ e4 q3 Q2 v
fd 1
# Y( U  a! W; S& Y( A
- {8 R9 t9 C1 z5 q
ifelse(other turtles-here != nobody)[

5 I/ ]0 ?& V8 t2 l
2 g3 i0 S2 X( T' ]% ~0 `) @. Nset customer one-of other turtles-here
$ D- x' z) s9 g3 Y

- J% v# q3 B) U0 P, ~7 k- O;; set [customer] of customer myself
  G, \5 {( S0 w' \- u  o+ ~/ v3 q  r

3 \1 W. M7 l0 m! l- bset [trade-record-one] of self item (([who] of customer) - 1)+ L2 N* _# z9 p  q" c
[trade-record-all]of self
7 I6 p% d& O9 O$ z0 L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 G: N; I4 V) R6 B
+ |* h- f" ^" s: c" d2 I
set [trade-record-one] of customer item (([who] of self) - 1)
0 F0 q! L3 e  O[trade-record-all]of customer

" Y8 ~' v0 b% v, f  I! Q) m+ S* u" t! {: \& I
set [trade-record-one-len] of self length [trade-record-one] of self
/ X9 u- E! R/ _& i- t

, f" A' u. T5 dset trade-record-current( list (timer) (random money-upper-limit))
7 G0 G2 [" Y  G; |- O. E( g9 K

1 F, W# ^$ q$ U' V8 Y& T. A) rask self [do-trust]
1 i- `. c) \3 [6 [" c# v;;
先求ij的信任度8 d" `5 v, q0 i

8 K4 F7 A* D% g8 v& fif ([trust-ok] of self)* [2 R7 E1 w- U, r* S( Z7 {& A5 a
;;
根据ij的信任度来决定是否与j进行交易[. N- \5 j* u2 |! O) ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) N1 s1 \1 s% b4 e+ P  Z, Y# b& Y6 f2 E) i
[
# ]( B+ H3 j9 g' t+ L$ F1 e
3 r0 }0 q, }1 H. c6 B. q
do-trade

; r% a. i1 Y* L- `
3 K8 V6 }1 q+ v' A! R6 ]- iupdate-credibility-ijl
' P0 x/ \2 A7 J4 t. t
5 b4 B6 j% O; |' G/ ^6 [
update-credibility-list  d$ n* o& Q; @8 z; V6 \( i% K0 ^* }

& Z( P" `0 x5 N- R2 v( F' b, Z
; y: p7 I9 j" [. pupdate-global-reputation-list

/ v1 x2 j' Z; S2 n; C
7 J) i9 z: v# [$ v, z, Opoll-class
- G, F* }' ~* R
' ^& I8 m5 x6 Y
get-color
/ X. V( n  }  \3 O

- Z, B3 P, D: ^2 P' s. l]]
* W! F# w! H$ j3 s# C# m# i7 h4 r  K, Y7 z
;;
如果所得的信任度满足条件,则进行交易
- s4 i$ R+ b! d7 _8 |4 R3 m2 r8 c% S' m
[
' u% D, w4 M0 W% E4 n- o

5 G- E1 M6 L( Q& Q) h4 Qrt random 360

) _5 i. @) o& \; h
- u0 A; r  w8 @/ p1 |4 qfd 1
$ w4 B8 n$ k0 P6 M$ }

) d, K$ p6 n5 s! E- W, D" n, X]

8 s  D: p0 k1 y
, T; d+ Z+ Q7 M5 s$ F9 Iend
* Q- W, z6 H/ g) v% t9 }  M% a! m5 y

+ i( Y' O7 i9 @8 k8 Hto do-trust
8 k" {4 f, T3 Z, dset trust-ok False0 o0 R( l& `, o; @. K6 z) q1 E* X

6 f, N8 R1 i; ?. d
) T/ W, p% _/ Y9 |. A1 p
let max-trade-times 0
5 @# v/ l7 A2 T9 y/ uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 o' E) x- [1 |' o* u& n
let max-trade-money 07 g* k% G& ~$ C5 l( x# X$ b# v* V
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  z4 r" j  r( J- c- [) \) z6 qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
/ _; t# T7 K7 L8 ~. K) b2 |
" E( {- e; y# U  t1 X
0 V3 b. m" f5 C
get-global-proportion: \5 ^4 Q! q  U9 M
let trust-value: r* {. }4 w& I  }
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)
7 U+ q9 p" _8 {& z* C2 y
if(trust-value > trade-trust-value)
' @$ `" p& y# P[set trust-ok true]6 A  M. G; ?+ [* |& K" N
end
2 W5 d3 J' X3 c7 f% i
9 u. m! N6 m5 Y; K/ d# H3 zto get-global-proportion- {& Q1 f" u; I# F3 ~1 y: r0 H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 n: r4 z5 c0 A
[set global-proportion 0]  K' M- H2 R) T# T9 ]$ l
[let i 0. a3 F* @) e7 J" g4 p6 t3 n4 K, t
let sum-money 0: U9 @9 S# A. R) B2 n) E; ?7 [- m5 ~0 _
while[ i < people]9 t/ }- x3 c0 N6 |8 N( h- C9 J
[) s- }& H9 J; m2 q% ]/ K1 W
if( length (item i+ Y4 R: i5 t# b2 f4 H: R3 J
[trade-record-all] of customer) > 3 )

: z# h9 N& d1 T) B  J3 z- |, ][& G2 u: p( M0 I1 e
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, \  |3 a6 @) P% \5 t6 [8 T; Z6 T1 U]8 I- C+ v! l" t$ Y& k
]
8 j7 }" M+ i$ Olet j 0
) {. D. Q' ^. N. Slet note 00 o5 e2 x: o, s( h2 l
while[ j < people]
0 @/ `8 f6 }" l$ g+ \$ Y[: h, p* x- ]/ |# F; ?
if( length (item i
, D0 X  H6 V, E  s' l" A& `$ R[trade-record-all] of customer) > 3 )

$ c3 L# f; G4 U) ^7 [" y[
4 \/ Q9 P2 S, g" X/ e  xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! m5 L: m! ^" O" e9 E: w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" S4 m8 g5 g- O; E2 l* ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% ]. k9 `3 R; K6 _, K+ [" }
], o4 o4 i/ A6 N
]4 {0 A- W% k7 S+ |1 R4 V
set global-proportion note
/ U; q( H( i1 A]( \+ |, z( U. Q: E
end
- o( G+ o6 s' b. O$ i! I$ u9 u  s  v% I  U& N& s
to do-trade
: |( [: \6 m8 t, @2 V% S;;
这个过程实际上是给双方作出评价的过程( q- M. L0 b% s6 p3 b5 g/ g+ t* F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 g; k4 _" T3 w- d+ {/ R; \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* G7 m  M5 \( f- J! s( T9 Z
set trade-record-current lput(timer) trade-record-current
$ G+ t+ w9 g5 M% O6 y;;
评价时间8 O) k2 c, G6 p7 A% J/ D; Y
ask myself [
, l. ~8 ?0 N6 z9 l4 x/ Zupdate-local-reputation
# s0 I$ w. b/ e2 Y/ oset trade-record-current lput([local-reputation] of myself) trade-record-current
6 G" f- l9 I- Y' `4 `. R+ j]
/ I3 a0 e1 D; H" ^5 F6 U  oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# P3 z- d& p0 n+ U
;;
将此次交易的记录加入到trade-record-one( h  c7 S. f& ?; Z8 l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 D& A  }9 k/ Y5 m& H( alet note (item 2 trade-record-current )# W$ {) l6 S+ o- N/ L; k1 @
set trade-record-current# i9 G; p/ B& D0 `) G
(replace-item 2 trade-record-current (item 3 trade-record-current))
% z" x7 X& I7 q2 o1 B8 u( k/ Z
set trade-record-current
7 U# [1 t& P1 _! T- i6 Y(replace-item 3 trade-record-current note)
0 g- Z* c) R8 q7 r% @( k. I$ O% ]6 i4 ~  \) f, Z( p1 M
. l) B! @4 H- [1 ]2 g
ask customer [; N! B$ A, I# [, g$ \
update-local-reputation
. n5 r0 S/ u& d; k2 E" l7 t- t/ e# Jset trade-record-current
# M" S  f2 Q8 }8 N* `2 e4 g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 V4 Z0 [$ Z6 ^+ m$ |8 V
]; [; H) y4 S& v. [3 E  `

  X& ^) B/ a( n/ w5 T9 U+ Q( ]
: @" P# |; x( w& O! L
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 y" Q1 |: P" l7 _; Q0 o, o
6 N* w- e; u  b: g: k* U% k
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 o5 h$ q+ w! y1 I5 P( ^;;
将此次交易的记录加入到customertrade-record-all; R3 Q: M8 G% H5 D! D
end- n; J0 w0 U, A; f. D  k& w' e9 }7 p! G
" s0 v' {( W) v, R7 l% |
to update-local-reputation
/ D$ t& P+ C6 H" e: I. }* gset [trade-record-one-len] of myself length [trade-record-one] of myself0 Z7 W/ n: E: ?, \
! X: Q+ Y' Z) W3 f( O! K8 [2 e
6 l0 d( R. h/ Q
;;if [trade-record-one-len] of myself > 3

% i$ K7 Q& b3 _% i, lupdate-neighbor-total4 z8 o7 u- Z; l( ~
;;
更新邻居节点的数目,在此进行" M/ f- e+ B1 U# b3 s; R! |
let i 37 t+ \: ~% ^$ P+ b
let sum-time 0: \5 Z* m2 c/ p5 ^" R
while[i < [trade-record-one-len] of myself]# R8 l! T2 Z' a
[; a6 E& O) f" O( {1 n& t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& n1 z, E9 q: m1 l/ bset i% Z( V( Q  d2 {3 z4 L6 k
( i + 1)
* e! h! E; z2 B- L2 k8 `
]
4 [, o- ?$ p% U+ I. wlet j 3
7 P: @* ~& F4 ~7 {4 r/ ?let sum-money 0
+ \7 U6 C8 c/ P1 ~% Wwhile[j < [trade-record-one-len] of myself]" v+ Q$ ~8 \% R, _% \: z
[; t/ d  Y% o& H0 J8 a
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)2 i' U- R$ m: f/ p$ ^
set j
( w6 O& C' {% ]& T# |8 |# J, y7 ]. x5 p( j + 1)

$ r# T  J5 Q7 I* L; v9 F]
$ o- a+ a: @5 q2 e& F* J& Flet k 39 z% I' D# F5 U
let power 0
! u0 I* V* G, c; K8 U0 llet local 01 m% m# V2 P' z' b4 @3 q
while [k <[trade-record-one-len] of myself]6 C6 [6 b5 _# O# F  k
[* u0 F8 z1 O: c0 Q+ W' F
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) 5 Q$ A7 m4 q4 ^4 E9 u
set k (k + 1); @2 o+ {- t3 R8 U9 C9 v4 k
]/ M1 _+ Q, `/ @5 ?, {
set [local-reputation] of myself (local)0 G1 e# B# }' \
end. V2 M' t3 S% _% m( V# N
0 n3 w5 O9 K( z' i
to update-neighbor-total
6 J" S4 ?/ p/ g/ T0 U  j
( }$ V8 S0 h" d2 zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, M$ {- t# c5 G; K6 S; L+ B( p2 {! K8 ^7 T, S

6 v5 F9 p4 Q( l9 {end
4 C: q0 H& d1 Y( M+ S* h5 `! m; N* L# j
to update-credibility-ijl
) h+ }) h2 o; w3 l) t9 \! ~0 V5 z
% L& O* G7 H2 F2 \;;
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。
9 d- J) e/ G4 ?: d% K: k- O8 `4 Wlet l 0
$ C5 ]& j3 e- Q1 i5 d  rwhile[ l < people ]
. q- D- X' s8 p( M;;
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" p% F6 z; k3 D9 h, j
[! q8 V4 ~3 |% u. X$ T3 O8 Z5 e, M$ e
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 G5 u) a; U4 U7 j( D8 [
if (trade-record-one-j-l-len > 3)
2 Q1 F4 l. A, j3 M[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-one8 N7 L! f3 B  Q& B% R" `' d
let i 3
8 d7 k/ Q: B6 x! l7 v3 [. Ulet sum-time 0
6 l; P; c# ~  S" Z2 y& i2 A, Swhile[i < trade-record-one-len]! u& o" ^( L" e; M1 x- {
[
3 q: ]; o& l" Q' H7 Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ |( N/ l$ e) [* a! Cset i
. f0 g' Z  }! \% k( i + 1)
1 A4 U. c6 `7 x" b8 d/ C6 C4 q
]
2 _0 h; f' D" i4 b2 H$ U5 f$ jlet credibility-i-j-l 0& J  E$ O% K+ f7 Q
;;i
评价(jjl的评价), G) w) ~: ~% q% }4 O
let j 30 T; I- ?  I' ~4 R" |8 M* a6 S/ C
let k 4  ~3 L5 ?* F$ X! W9 ?" g* c
while[j < trade-record-one-len]
) k1 Y% m# f1 u7 V8 Q[& P# f1 G* f8 D. H0 Z8 e
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
/ i% r9 d# x  [2 h2 e# @- D/ mset 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)+ r4 d) f0 n  _. x8 r3 m: i  o
set j# l: C& g) C4 \  Y9 s" ?' Q) v
( j + 1)
5 y  j( m5 W, a
]: m7 K5 Z" q$ d& F7 _! w
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 ))
4 t/ U3 U  e6 h+ G4 e# p& ^, x0 i  P4 h" a

" f3 |9 D- E+ k9 ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( M5 J: O0 U, o/ _1 x, \
;;
及时更新il的评价质量的评价
4 i& U  V2 K2 |) o$ gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& p# F* L4 }! F
set l (l + 1)
: q( R! |- i- ^7 W& P" p]
$ b8 D3 F! ^7 j8 E  k# m3 iend
" E; f( L/ J/ z
% o1 J7 b7 c5 h. O0 K% Vto update-credibility-list$ o- f2 h# a6 s  }" l" E" ^) P
let i 0
. Y; U% Q- L9 A/ q: A: \while[i < people]
2 G8 X" w1 n3 s  A; Q( v[
  i2 l  p' J, x; _2 \/ l' ]let j 0# U8 H, G7 y6 c+ R
let note 0
5 o0 k/ N! C, I4 }3 |% Zlet k 0  A' Q+ d% K  e: V- X0 G! M
;;
计作出过评价的邻居节点的数目
7 ?; A- f0 |$ v0 K/ }  iwhile[j < people]
! f- o6 b1 @0 S+ y[  T: g" R% T2 L, J* F. s2 p( T. F' _2 f, @
if (item j( [credibility] of turtle (i + 1)) != -1)
" v6 m6 J7 }" I- A+ I8 L/ T' Z;;
判断是否给本turtle的评价质量做出过评价的节点
& _; X. A% |5 @( T6 I5 O, t[set note (note + item j ([credibility]of turtle (i + 1)))# h* i6 z1 F' T  [! V$ B# H4 J
;;*(exp (-(people - 2)))/(people - 2))]

) X/ e( Z: ?% d4 K5 b. Y& Hset k (k + 1)
- ^9 J# j: m3 `* S], m1 X5 T* Z9 A/ h
set j (j + 1)
3 l7 m8 Q7 h9 @: D5 X: e5 p2 J3 }]+ a" A2 k6 {$ f+ Y
set note (note *(exp (- (1 / k)))/ k)! ^) S+ U3 Y5 Q8 B
set credibility-list (replace-item i credibility-list note)
* Q+ m0 w! m* L- o& B4 Xset i (i + 1)' Z( O. |0 {) _$ u, d9 M
]
$ w: g) D) p4 @6 [3 vend
2 F% {4 p! j6 _6 Q
+ [6 }: V4 ], `7 w2 n/ L9 zto update-global-reputation-list
2 Y* Q( r- f$ ?' C+ u% G: Nlet j 0
5 q7 r. S4 L  H- C" Pwhile[j < people]
1 r8 V' r3 \) }4 z[
, K$ H7 o9 h/ T2 d, r  x8 s) t  _let new 0: b7 h; ?) z9 {- Z4 a1 I
;;
暂存新的一个全局声誉
1 J- F) _/ C/ f2 e0 v4 }+ R7 glet i 0
7 _  K: q' X3 s0 ylet sum-money 0
- ^3 d2 `4 |3 Tlet credibility-money 0, A1 G6 |: h, k8 D8 N
while [i < people]
) {. ?( ]) S1 W* P! E4 y[+ [  `0 j' z* k4 ^* K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 Q+ u8 n# `/ tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  g9 u+ F; Y% d( U4 M  }* \" [set i (i + 1)- Y% l% `/ L7 ]7 C/ @$ N
]
! o0 E9 g9 a$ Q) w7 B/ r& f5 ]let k 0* a8 ?* z# {, e( }5 l
let new1 0
: R1 t6 v+ w/ a; B% Hwhile [k < people]: D- p* L& M0 E- K5 t6 N
[: q# R0 r7 E7 h# V8 |) a% V
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)
6 e' \' u+ v+ Rset k (k + 1)6 q+ h3 D3 H: z# d' H
]" B  E& m( d& i2 ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& p! G0 E( f6 M# w- Eset global-reputation-list (replace-item j global-reputation-list new)) e5 `9 n, s$ M: i) O7 x, P& @, u
set j (j + 1)
/ e& h6 c% P; Y2 {]
; x. i$ @) S; {6 xend* H/ V5 O2 y4 i8 D

# A) l/ Y$ R- q/ u# s; N  b* G3 a: |5 m$ d

8 j, k% S/ f# j& g5 ato get-color7 |: W) v; W* H

/ y9 ^5 G  v4 J. Z- ~* M& |% Aset color blue
, a9 o- @, G, y- f3 H5 J+ ~0 U  [
end. |- T+ T5 r$ B( d. R$ l3 B; Z
: U3 b( f3 |/ p) z  j9 W- U
to poll-class% W! Q! @3 Z3 ]* b# v9 P+ h
end
8 |/ r: ~8 T2 }( T* n
# r: P6 ?+ s) _7 C4 v+ Nto setup-plot1& {. E+ ?% d& ^9 t
- q5 s$ H. P4 e& O1 q; _  l
set-current-plot "Trends-of-Local-reputation"
# A" v% Y2 D2 F& ?# p; D1 j
+ }- c" u- {$ h1 y% S6 A7 Q
set-plot-x-range 0 xmax

/ p& P$ |6 y) E, u# r* D9 i6 S( u3 t% d1 ^
set-plot-y-range 0.0 ymax
8 G- }7 Z; i  F1 F5 i9 r
end8 ~: ~. h  i8 {3 t) R

; k  F4 S7 u1 X5 w9 g) uto setup-plot2
* a9 _5 I, w1 c" p! p, F$ d' V
6 ^( k& o" N& H# `7 f" u/ `set-current-plot "Trends-of-global-reputation"
; W$ \% N5 _0 |9 d1 f( e
+ E; U" A1 R( z0 l$ I  |
set-plot-x-range 0 xmax

" R- \0 E$ j4 [+ S; _
0 [5 u: c7 B1 Q# {/ I# [0 Pset-plot-y-range 0.0 ymax

" B7 f. v# O8 q7 h2 p. z. Lend* O# w1 [9 P2 Z% r
8 [9 c9 g% |( S
to setup-plot3* T8 f3 l' {" b  j

5 E% F4 i& y1 e8 f% K3 lset-current-plot "Trends-of-credibility"
3 B' K; K8 e: f& r/ X* w, S4 Q' ?
: G) m! \  @" F& {
set-plot-x-range 0 xmax

3 L5 V) ]! R8 ~* A
$ J; G0 U, f6 a9 p, Qset-plot-y-range 0.0 ymax

, X3 z# t1 V6 n; |2 @  |3 gend0 [0 W& B8 O7 s
2 Z! Y: l! ~% C3 I
to do-plots
; g$ ]$ J: Y# jset-current-plot "Trends-of-Local-reputation"
% j: l2 ^) ~' R2 u" Wset-current-plot-pen "Honest service", J/ _& V9 h8 w& R# o
end. u+ }7 E: U' k

& t8 y2 s) ~: v; h: S[ 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.
0 k9 O) r; p/ }% _* F& A' b
+ C& |8 T$ O5 Z9 V# M* m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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