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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:8 W5 K$ P+ [1 L) w5 y1 O: |. Q
to do-business
6 W+ V4 i- _, l2 k3 j rt random 360; h: {0 R! t  v, |+ Z) a0 B# [8 @
fd 15 `% E% Q; y0 p; `) C  Z- v" k  w
ifelse(other turtles-here != nobody)[
; L$ ~& I( [' 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.
1 F; r+ l/ O) X- ?. a* H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 [+ U" c+ y( f6 ^, h6 W/ L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' k. T+ `1 U4 b
   set [trade-record-one-len] of self length [trade-record-one] of self: }6 V5 ^4 e! K2 O! q
   set trade-record-current( list (timer) (random money-upper-limit))
) l7 M' _# A) X$ O& J
& P: U/ x, W2 Z, q8 M问题的提示如下:5 O3 l8 A2 p# z

3 [& Q$ J) S$ g; L& Verror while turtle 50 running OF in procedure DO-BUSINESS
( A" F$ t% G, L# n  called by procedure GO
; f9 O2 O5 O0 K& TOF expected input to be a turtle agentset or turtle but got NOBODY instead.# ]( c" j) ?0 ^7 K5 W( @
(halted running of go)
9 @. y7 X" p  I( N/ w! X. n8 G
& B9 L; e, |0 i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~~
# {  P) |7 y3 M7 H1 r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
' d: d! w" @9 L( o( bglobals[( u7 f; K( S: W2 Q8 b: a/ x
xmax; m1 V* N4 E! b2 |
ymax
' C: o( {" F/ r1 ~2 p5 qglobal-reputation-list0 n0 F0 M; h- r# @0 w
% d$ A9 {4 l% J9 X: O
;;
每一个turtle的全局声誉都存在此LIST
: b; T& d5 I( gcredibility-list$ N- d5 n. J4 J' W8 A: ^$ S
;;
每一个turtle的评价可信度
+ Y. V! W: _- H! U* y4 Whonest-service& v* G) E* i* o/ x; I  j
unhonest-service
! _4 F& n/ v3 w0 V4 U# ]7 b3 ~  \/ roscillation, i$ w2 G# y; k0 I$ F+ {( ~
rand-dynamic
$ h3 w; s0 g2 O& X+ O. A]& w0 S; [; f; b
! I6 m% B9 Q. Q4 c
turtles-own[; B( q1 {. g# e6 [+ C! `
trade-record-all# e+ a* i1 c- V6 P, @
;;a list of lists,
trade-record-one组成6 \9 L1 h# r& z4 c' i6 Q3 G, k" ~
trade-record-one# p' @6 a: t$ j5 t+ h1 C. G
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( [5 b: o$ x% U% J9 s) s3 u% l* b
& P. v) o8 `  q9 p1 ^; I
;;[
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]]
  R4 t& o: o3 i4 ztrade-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]
2 V8 u$ b# W7 C0 l% o1 u/ 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
' a3 x+ T( R# ]) {; a4 B& Mneighbor-total
3 e# U; J' z9 S* F) e' v;;
记录该turtle的邻居节点的数目& a6 z* s/ C8 B; [1 w, V
trade-time
/ [& f  D& ~/ t& ];;
当前发生交易的turtle的交易时间* t: s& k5 o/ I3 W; ]7 {- H
appraise-give
$ @& Q0 v' C0 w) N;;
当前发生交易时给出的评价
- t5 O2 S3 V0 [8 P8 Vappraise-receive0 d* S4 Z! E+ U
;;
当前发生交易时收到的评价7 z$ V7 o' g' Z- ^9 j0 s( v! P
appraise-time1 b# N3 @5 l) ?( M
;;
当前发生交易时的评价时间- N  X0 m) X# w3 n( _
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; ?! b6 S. Q: Rtrade-times-total8 }: h6 [# A8 c9 Q( E
;;
与当前turtle的交易总次数: `9 n; q5 f3 y; N3 S+ w
trade-money-total- Z, ?6 |& Y% M8 C: V% u2 K
;;
与当前turtle的交易总金额9 }2 F! x  t' ~4 U4 @7 F0 R$ _/ ]
local-reputation' L/ M+ G2 g$ r1 W' Q0 W
global-reputation4 w; i/ M+ L: n" R; \6 ^" q
credibility' e& y/ o: j/ O0 L* x& N9 p2 J
;;
评价可信度,每次交易后都需要更新
8 M0 A7 U. k, w; F1 Lcredibility-all
4 n% Q5 {2 ^8 R& G;;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
6 Z$ [% B4 o1 j; b8 u0 @
- @6 N9 A- g1 t$ h' U7 U;;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
) g9 t& ~4 b4 f) {credibility-one, N* t/ M+ b1 f1 j6 M
;;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' U' s# n1 c6 l; O! K" ^$ e* s0 C: f* }
global-proportion* q6 j& `5 T" P3 t& H# ?3 i. k
customer
! \6 Y0 b0 y3 T& A& n$ V" Mcustomer-no
/ U( t5 D% w, W/ L/ vtrust-ok: F2 w8 a6 B% B5 p2 Q$ |" w7 W
trade-record-one-len;;trade-record-one的长度
+ C' O. S8 s, c: C) n$ o]  ^; n9 Y' u1 Z

9 W: {) a8 ?$ S8 g) [3 K;;setup procedure" p  J  X4 n5 m9 x! I
9 U0 ?) I, C1 \) k: _
to setup8 G2 i1 F& X$ m% s) F& B

( @& y  \: n/ ?. A: P) _0 X4 fca

* F  e2 N" G* L
0 t# G/ ^) z( ?  Einitialize-settings
+ m0 A9 a/ r) T" I4 C
& G4 |$ r- u& x; `$ h& P0 p+ m
crt people [setup-turtles]
" A8 p: \* }0 B- Z

& K2 A4 f6 O3 Y, v5 O$ r2 Freset-timer
  d5 f  n! V1 N- m

6 q% Q% R' I' `; X/ rpoll-class

& N4 B. |5 y# c
( V: N- e/ H+ b7 T" Asetup-plots
3 J2 [& S0 g: h& j9 m6 |

6 F& D0 c+ t& u1 L4 pdo-plots
4 j2 @$ ?. R' b6 D' i
end
" c/ d, _* c; ~9 M0 w, t6 `  @
  L( U- I0 W$ A& n" pto initialize-settings4 x8 T. Z; b$ C/ w& b1 b, g4 S/ L

2 `3 I! x% _1 r- Q0 }set global-reputation-list []

5 n- A: x: X# T8 F9 w2 Q! M  U, m: I0 A; W# S' _
set credibility-list n-values people [0.5]
* g  L% `* n! C

0 l+ f' {: Y; b# n6 O- W, ^* \set honest-service 0

4 S7 g# A" I. L0 N! y4 m% I) |6 V( |- w
set unhonest-service 0

9 h  p& I) I" e" l/ ^; @
, z8 X" w8 M6 n& @( U, w% b! oset oscillation 0

4 W2 f: J; P/ B/ o% J' y7 @) V( f* K& x2 N
set rand-dynamic 0

" y- w& W/ B) qend8 J. z, B/ C3 `0 n; n3 {, L. D/ c

2 f% ]! u: o' ito setup-turtles
1 X  J% o& s, Y, k& g9 I3 o4 Kset shape "person"2 d" J. ]" A7 C/ e; L$ ]
setxy random-xcor random-ycor; `. f' Z4 \5 L. l& A$ _/ X9 N- o  i' M
set trade-record-one []
  A/ f2 E( y0 g$ ]- r! O, m0 R
. Y0 ^  A) k  t* p
set trade-record-all n-values people [(list (? + 1) 0 0)] % }& y4 L, i5 N
+ {1 U6 V  R7 a: M; ?. I1 y
set trade-record-current []
) F8 t, j. N1 ?set credibility-receive [], ]" f# I+ Y3 Y/ C! \
set local-reputation 0.5; U& g% @1 W0 g/ W9 e" l. O% ]
set neighbor-total 0
6 r. ?% c/ I1 D4 f- F/ w0 Zset trade-times-total 0
+ M3 n+ o# }) {5 `; l3 p0 [set trade-money-total 0
) W7 y6 x  z7 z& zset customer nobody
) T9 p# e/ }; R8 b4 ^, K: Yset credibility-all n-values people [creat-credibility]
& {. ?) ~- h7 `$ T$ T1 ]set credibility n-values people [-1]. z; u: H( }. s+ n* Y
get-color: J* o9 b; X& o4 k" u
+ _7 N. u# W5 c+ K/ i
end
$ D, @5 _# p0 g+ \# m0 F
7 v! m9 E& F/ |% D( Q7 oto-report creat-credibility
/ x0 `" o$ ^! D) D6 dreport n-values people [0.5]
7 O) [% q+ v9 l& }3 lend' u' y+ b7 w6 N% X
# ^  b$ D' G/ U+ `5 E& n
to setup-plots
! P, S: x& J% @/ @( R, S$ ~; X! v! p$ ]- B
set xmax 30
  y% f' f. c5 B/ t4 t- [( O! R
! W* |6 H8 [' x6 P
set ymax 1.0
6 x0 R6 G% D" D2 P8 R1 x5 a
9 z; E$ }% G' }6 d" F
clear-all-plots

# H: o- B: b" R0 s1 z: E1 D/ D# g( l/ c1 S4 ^( ?
setup-plot1
4 @! k9 U! ~  Q; y' y5 D( e( y+ Q
1 W8 g# n% W9 ]% h8 j& y$ P
setup-plot2

; _- S4 U- [' A- g% a
4 _8 F& A% R2 e8 Q) J7 \setup-plot3
8 h# @* o* \3 {2 T& }8 s2 o
end, W) g. F3 _( K7 c1 f
2 o9 o6 p7 Z& i! e% n5 u  S
;;run time procedures
& F( q6 B& P9 j" h# y, ?- o( l6 x2 a( n) a# O% n" E% E
to go- O0 C5 t# Y2 \0 T

4 F) S( ?+ T; J% _ask turtles [do-business]

5 ~: [, s% B" J: j$ z. n4 Dend
. q( R8 x! e5 N
* {! V( ]4 ]. v) Q# V% Tto do-business
" [7 x  A% q# x* k. Y$ o- M
& N5 A; I! E6 k7 J" `3 X. E- a
! C% m8 T# s/ I9 k# Q
rt random 360

9 g4 a; l0 M$ \
3 L0 U8 p0 o9 t) o) G( {2 a9 Jfd 1

5 \+ i0 Q! m: t/ D. D, _5 D
; G& s, F' u  E* ~: e& Q: w+ _ifelse(other turtles-here != nobody)[
' R# k- W8 B& `. [* ~
# }7 z$ M6 `0 g- S8 O
set customer one-of other turtles-here

1 S/ X9 p3 `5 s8 d, A3 o
3 U* D, C/ w$ h;; set [customer] of customer myself

' l! @/ Y9 O5 u# d3 v7 L0 ^, H) c7 b# o) c$ [
set [trade-record-one] of self item (([who] of customer) - 1)
; r" t  z3 q+ x. P) U+ A7 U2 v[trade-record-all]of self
/ N8 V/ Y4 y( v) L  L) n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, v9 v( t, H  _1 Y4 t: h8 f  m5 Q
" n. q$ ^" A1 W8 h3 kset [trade-record-one] of customer item (([who] of self) - 1)
! l- J. A+ t& G. m2 v+ E( `[trade-record-all]of customer

: I8 S  R8 {+ j5 F" H8 [: l
  c" m/ Y1 h- K# r* |% Q" Yset [trade-record-one-len] of self length [trade-record-one] of self
. ^. ]2 I) X: Y0 j7 Q3 M% B; `
! B# N' D- ~* ~; Z  B- r. p
set trade-record-current( list (timer) (random money-upper-limit))
( }+ }1 @9 g, E! M4 u

8 w/ n7 L1 k/ b6 s, L/ l6 Yask self [do-trust]
; ^( d. f4 Z9 G0 J0 };;
先求ij的信任度: S: o- {$ s# b  p5 F- D9 K2 n

/ B7 w6 s5 ?/ Z. Mif ([trust-ok] of self)
4 B! \0 Z' J5 S" H3 W7 L1 C, _;;
根据ij的信任度来决定是否与j进行交易[
. X! Q: V2 J, }8 }ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 E! |" B# e$ v0 y- b

; d# o* y% z. O% w5 M3 T[

( E9 {8 X/ L, s: C% ~" i; A2 b/ w
5 t' f, _! i0 q: v* N  e: }$ qdo-trade
2 E" e4 x$ U0 Y* w+ K/ h

' Q+ b/ e: e/ z% j! k3 T4 Supdate-credibility-ijl

9 G$ Q0 ^  D) D! l' F. \: q  |5 g" g3 A$ j5 }: S
update-credibility-list* c2 _' s6 I! s" a0 z1 Y, V' I
/ F' j0 p: R) G) w' e
% R6 b% }- t# v) e
update-global-reputation-list

' D( t" `( D3 o3 `3 D9 G& T- W1 `; y
poll-class

. O+ _1 \" [& Q% c- k% M6 G6 y
9 q0 D6 g2 _/ Y1 s  }( ~; [% ^8 rget-color

8 f! C* a( w7 W+ E6 K1 y( R! \
( e) e- L( p5 M; t) Z- g]]
: \3 @, S* `8 p1 P( k* l- A6 _) S- R! W& D) Z7 C
;;
如果所得的信任度满足条件,则进行交易
: x) e# A1 U$ o" f9 S0 W
. V) w) ]6 K- u' C0 L! z[
" p. I# a' A; Z8 _- Y2 b% Y
& H( g& Y! n$ b) [6 G' ^9 Y
rt random 360

* k& T' o2 T$ l/ k" \4 a/ G) T# U  \& X- s) `" ~; P" f
fd 1

. j$ c- ]  F. m* r5 G" Q# d. D$ T$ y9 S8 ?! m8 i- C3 ]1 o
]
/ U9 X/ o2 Z# ]* E0 |

% C7 `2 \& F1 pend

# s) z) P  ^8 s/ }0 \/ ^6 P+ b2 K  b1 f
to do-trust
/ C2 I  C. G5 ^) Q  ?3 kset trust-ok False: {3 x2 m) V- S4 s& @! n; s% K0 N

. H0 k- U* F% X; D% ~9 C: }

0 k; \# R5 L+ f( W) V5 Llet max-trade-times 0
5 k' b0 ]; H5 s: I# ]3 Hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 ~- {0 Q6 K- w. u' Ylet max-trade-money 0
  t: T3 X2 N4 o" Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 }1 ^4 o1 g$ U' @# h2 Q2 ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: S1 i/ k# H7 r+ A6 K. T  ^! s. L. H

6 L1 O2 S3 r) m. sget-global-proportion
+ H4 X( A* u+ @$ \% T2 V' T9 }let trust-value
& C' t$ u1 u3 e! rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* B( k1 W* l5 R% \7 L7 ^- ~
if(trust-value > trade-trust-value)
. C1 y+ H9 Y# Q, P[set trust-ok true]
3 }: [/ w/ s! E8 Q/ W! Kend
# x0 f5 r+ _- _4 X7 X1 J. e
$ v. k/ S; D8 {2 h0 u) a" ~2 {to get-global-proportion1 e  T; J9 H2 Z* k8 l$ n/ m2 W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 s5 U: m. f3 P6 v2 s, M[set global-proportion 0]$ _1 a% [1 c3 _2 y- |2 k
[let i 0/ H' U, f: m$ p2 m
let sum-money 0
7 V0 H' E1 ^% A* x: Uwhile[ i < people]
$ N- A3 O. |% j[
7 t+ Z. Y. O' n  R# ]8 e  kif( length (item i% j  W9 l# W: l+ i" R) C: u
[trade-record-all] of customer) > 3 )

- E  T: y9 f) M; {[
- ?; W0 l: e4 ^% S/ b) I+ Z! Eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  H# _* m  W$ U. _) g9 ~]! O0 A: }9 o3 c
]3 \% I  D9 b$ Q
let j 0
- [7 h. z8 d; l; xlet note 05 Q* y0 a2 ?$ ^# I- @- r6 U
while[ j < people]
$ |6 l3 I7 n: `  q) N- C  h[
1 x* o; Y7 U1 c: G& X% xif( length (item i
$ U1 O/ C* z+ g7 ?! w9 x- N[trade-record-all] of customer) > 3 )
/ o' @; B4 q) i" e0 L
[
* L; U" `0 X" a% Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 r7 N& S9 b/ R! O8 w  s* p[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 m6 N) k; ]7 t" ?0 v5 u, T
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  g3 e. o+ S7 o7 F8 V0 ?1 u+ |+ _
]. K/ T4 \; o/ L
]
: r9 ^4 d: E2 Xset global-proportion note9 A: E+ r. Z$ j9 O( ]- i! Y
]) [' v! X/ f0 A8 X# p
end
. `$ _% f% ?/ {7 F4 B/ U$ C
" P0 p4 a. [. R3 h9 T# U: lto do-trade
2 |6 f) Z4 e7 R;;
这个过程实际上是给双方作出评价的过程+ D+ K$ T# X& t+ G1 t( W3 r+ v6 E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ Z( f$ Z# F, F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" U2 B' q. d! `" C3 T" mset trade-record-current lput(timer) trade-record-current
, t; _& ?1 _, \8 m8 s: x+ f;;
评价时间
# `5 n  p5 `/ T; J9 Yask myself [' f( h" ?6 W4 g/ b
update-local-reputation
4 k1 U& _. E, j+ Vset trade-record-current lput([local-reputation] of myself) trade-record-current0 R0 ]: o2 X$ o! N( ^" \
]& E) D) N6 U- }4 S# m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 z2 y2 g% C5 g;;
将此次交易的记录加入到trade-record-one
4 q! H( _- e% C) o  Kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 v0 m$ r+ c$ Z6 b! Dlet note (item 2 trade-record-current )
3 _: R* u6 K  u8 F- K3 Hset trade-record-current: r' `3 f0 H* }, H' u3 b8 P  s1 X
(replace-item 2 trade-record-current (item 3 trade-record-current))
* |& }* w9 M) r, y! n6 U& i
set trade-record-current. N8 O4 F% G  m6 r2 T4 b* P
(replace-item 3 trade-record-current note)* k) A# A2 {- S- Y$ _0 G4 Y7 W' l

( P* X# j. O! d7 ]# N
. _; E5 d5 q% e8 m
ask customer [
5 V0 w6 A. e7 V& T0 O1 ^' Dupdate-local-reputation; |% W) v3 C! y) E: p8 t
set trade-record-current
0 |; ~1 ]2 D8 Q- l/ B& m/ j(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 m& E! n! ]7 J4 R' l9 b
]  T$ ~0 }3 d  U3 g
% X* k  X9 h) v( d: Z. g7 y9 N
7 ~) m1 `/ V& z/ ?9 H0 q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! l% `( D- T- j. C9 W) o
6 N2 h3 K+ X& b3 o* l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" I$ z0 ?' M6 P: q  G7 H;;
将此次交易的记录加入到customertrade-record-all
  [- h& x' C7 l7 G" M# @end* R# f' ?- q! h; V0 v' Z4 q
' M, @0 i0 F4 M+ E
to update-local-reputation
5 v6 Y3 n; j) R' t" R2 F! ?set [trade-record-one-len] of myself length [trade-record-one] of myself- g: g4 A+ U/ W) B0 V+ [: F
8 m2 T% ~( V: }# `# _% K. O
: ^, h& D% q" h) k8 Q
;;if [trade-record-one-len] of myself > 3

( _7 |2 I, c- L  V2 H8 X- fupdate-neighbor-total
# l- X3 l9 \9 b, S: d2 M% W" L;;
更新邻居节点的数目,在此进行
9 s' K# J# S. d1 e: klet i 3* R! E/ V) T, W4 v3 c# u
let sum-time 0
6 J2 G! l/ c, I& n8 Awhile[i < [trade-record-one-len] of myself]: X6 K" ^# P6 o; l
[
7 M" M$ O- ?) x' ?0 f4 {& ^& Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 }. c# P# r% Q) M6 ^set i
' q( Q* @* K+ Y5 [( i + 1)
- @2 Z' `5 k$ ^+ }1 g2 q) K
]
; F6 q6 Z* M$ \" }let j 3
" Y( D5 e5 [. x2 H' }% Z) t' vlet sum-money 0/ t& I/ U/ n3 {. X( [6 f
while[j < [trade-record-one-len] of myself]# M. \  u4 \" w
[
- _: j$ o& ?/ k, aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)1 d$ b$ x; k0 Y; s
set j
& ^7 A  x3 e3 Q) B( j + 1)
; B4 @- N4 B% H1 ~1 O4 A) h" f
]
5 S  O) X3 R, @" K8 U* Vlet k 3
2 X, S% y% n0 ?* _  `let power 0" G: R% w) I6 t- g
let local 0
9 _" S& Q& _8 Ewhile [k <[trade-record-one-len] of myself]0 z! P( p8 b; K$ n1 o' a
[, I+ F9 H7 a: ], G  C9 x+ A) j! P
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) 0 p5 o% _1 Y* F& j3 j
set k (k + 1)* U$ f$ d! Q+ Q- R1 b( _
]7 p* V. ]$ k0 A6 [6 \" A- y
set [local-reputation] of myself (local)5 E6 C: F4 O; Q! s1 p) H( h
end" e% F( b+ ^+ P1 {' p  V& p
" b: \" o" I) l( e) |! @( N
to update-neighbor-total
' A3 r2 w' T$ x: m+ x  I) c1 i
9 ^) R1 x4 A! ^, z" M& Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 i; @9 P" M" x, P
% O% d& E' p  |0 N, a
6 P# T, i6 U9 A8 V8 O' K. s. m1 }
end, l# m) f, \; o: }6 \4 i
3 A& U- I# _! U$ H8 ~$ r
to update-credibility-ijl 0 ]4 g& Y8 b9 ~9 J) v9 @4 v" `) K

+ l8 ?! e9 E. h% M4 t;;
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。6 O( G8 W- J4 r4 m2 g
let l 0
+ ^7 `! ^; D% L! _& k- |while[ l < people ]
$ \3 u. W- d- X: |( z) F5 }  ~( l;;
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
' s$ R6 r( I" d! e' X5 W( z[8 y" e0 `# t+ ~  T  d
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ H. f5 y. T, k* rif (trade-record-one-j-l-len > 3)7 v3 p/ f- a1 H- D+ ^2 c6 b
[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
  ^) b7 C+ ~3 e" d9 W7 }let i 3
! k1 S' f+ {' D( T: e* plet sum-time 07 b! G+ u- G8 q$ X
while[i < trade-record-one-len]* S  R: a# Z+ H. s' I* v3 K+ f
[+ x( S8 N+ C, ?; P/ Y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): O; l; {5 u3 o6 a# f" r% ]& S
set i
) a  J! h! Y; O! ~( i + 1)

( w% W  T% r, @% j- p/ Z1 J. g]
0 N9 i2 H* P1 v9 S% r4 zlet credibility-i-j-l 0" ]6 L( c7 y- J/ u  |
;;i
评价(jjl的评价)
9 T, ?3 d7 m6 k0 o% N2 @: ^* flet j 30 V4 X8 V# q0 f
let k 4; p  V* ~% m9 n4 L/ F, Y
while[j < trade-record-one-len]' ^: t8 i1 _1 S
[+ b& N9 l6 d; P2 p
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# ?8 B/ r, o3 \
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)$ N7 j$ x! Y! p& M
set j3 M8 Q0 ~, f4 Z. ]# _. S
( j + 1)
. S5 x8 p2 d8 V0 w. c& y+ o) P
]
) n$ Y. k5 l, nset [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 ))8 P1 E# |# z# e7 ~. s' G+ D

( v5 L1 F# a/ _* @

$ |; i' ]) S/ e3 D; \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" r4 k9 B2 t9 Y( F) q1 W/ _
;;
及时更新il的评价质量的评价
7 Z& \* z6 s+ o- L5 P$ Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 [7 f) B6 P, y& H$ G" [6 y
set l (l + 1)
7 `- E8 J5 j  U. l) N]- S2 h& i1 u+ w7 q3 M8 B0 a
end
$ D: t7 {* W/ c9 E3 }: |# p% U" z  R- P( i
to update-credibility-list" O1 _; o+ [: |6 O" U& _
let i 0/ `0 N6 m8 ^9 d# q4 \
while[i < people]3 w2 R  H! o1 _
[
  I) G* {9 U& ?; O+ Slet j 07 Z0 v" t( e/ r* @6 v8 c) \
let note 0
* u5 f+ Q. F7 \% N. q$ flet k 0/ I0 V, p. h! Q( W
;;
计作出过评价的邻居节点的数目
- M# w2 c  l. a0 H; {while[j < people]
) y( E% {2 u# E! I) B! q, `/ M2 u[
  M/ _) |5 H! kif (item j( [credibility] of turtle (i + 1)) != -1)
- g9 t7 w$ J0 y% G. G; v$ ^! \6 h;;
判断是否给本turtle的评价质量做出过评价的节点2 k+ R6 E1 Z# a( ]) j) s0 w
[set note (note + item j ([credibility]of turtle (i + 1)))  G, M) G" ^$ g" O- ^
;;*(exp (-(people - 2)))/(people - 2))]

0 F6 b) I8 p9 m$ t" f, _& Zset k (k + 1)
! v- N8 t* h! `# a/ H]
) e9 [9 w* V& {& x% m6 h5 i# Z9 Qset j (j + 1)( u( N  \- y2 I2 Q) S+ a
]
5 k" ^7 V, D: G; r: \set note (note *(exp (- (1 / k)))/ k)7 |& D# [6 i/ O% M
set credibility-list (replace-item i credibility-list note). [4 }$ f; c/ T
set i (i + 1)  D" A  \& v* k/ Z* s/ b- |
]% [- i+ y/ g+ d7 e1 y" v
end  A+ w- \" B2 X& L0 A, Z$ G- \
2 F5 k$ y6 F2 [% g  t
to update-global-reputation-list8 L' R6 {8 A1 t! x
let j 02 {; G) A* m" N! v
while[j < people]8 s; ?' y7 N1 q3 p) U- {" s
[
' T& c* k: J% \0 R" c6 g/ C% W! C7 ^let new 05 t. M+ K, ^( f2 x9 w3 I7 x
;;
暂存新的一个全局声誉& O2 Q6 D: _: i7 I* F
let i 0
! B) \3 k  s1 U" C  F. nlet sum-money 0( H9 y- g: Z) Y+ q
let credibility-money 0% n' c# j: l9 a6 h) F' r
while [i < people]
6 J' W; n; L- z8 S) U( p[/ M& I6 Z6 a2 ~* C2 q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 S4 Y% l9 W+ X" f1 b* Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" P& R& x4 V6 ?/ w" \- t# Qset i (i + 1)& X# R9 U$ i) z" ^+ q0 P# w# i! F9 A
]
3 X# y& S+ Y- ]% S9 _* llet k 0
# J1 ]: i5 D& b7 J  i0 f5 |let new1 04 X+ r- M! _$ X  Y; z
while [k < people]/ Z0 A  o% i8 t0 \4 r
[
! |) w( m! s, b0 h# Zset 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)! Y9 f- P6 [% O1 S! E
set k (k + 1)1 N4 {8 ^! Q: h) Y, ?8 T
]* o& D& b' v# U6 ]" D/ m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) ]4 O" t) H# `) z  [set global-reputation-list (replace-item j global-reputation-list new)
) I) `- E9 Q2 q# a5 V* w$ K) o" pset j (j + 1)* k& Q7 o8 z/ ?4 T. I+ ?: L
]( `' L) k" v3 k0 M
end, b3 _$ r- j1 l' ^

% C7 O1 h& L* z5 }" t8 t+ p3 o+ m0 u$ ~) T
3 Q) G1 }  {) k) K+ J
to get-color
1 Q9 a- l9 X* T- D# Q4 |1 W& x9 |. M$ |0 l& l
set color blue
0 b4 {* K; g" i) D3 h
end& z! s) U- \  }8 h+ K; `
1 O2 [$ o/ i/ }$ L3 O. C9 c9 ~' |
to poll-class# C4 f9 Y' o! I) a# q
end0 O$ T4 A9 F1 q1 n3 S$ v9 x7 V
/ X8 S+ {7 E- D# \+ z+ A
to setup-plot1- F1 {. u' S8 _1 B6 g, A- q3 d$ r
$ T4 t8 a. E3 O8 `
set-current-plot "Trends-of-Local-reputation"

7 ^. u( l7 \2 u- H' ^) b+ G
! O. H) Q* s' i* Qset-plot-x-range 0 xmax
" w) c( B) J, l2 Q( i/ e" I

( X& [( P; j6 m! ~3 Qset-plot-y-range 0.0 ymax
% A0 d" o# Z% E* ]0 b) @9 X. n4 z
end
! v8 n5 |0 R  ~, t/ E; L' p# \; A/ |, U) A: C+ R% x! X
to setup-plot22 B& B" }) G, l7 M( A# ~8 ]! Z" O
4 X) B" q2 m& b+ L" ^
set-current-plot "Trends-of-global-reputation"

: L- |' b+ k7 f
& i7 A0 ^* Y: G  A) wset-plot-x-range 0 xmax

7 S- Y+ x( k7 ]. u) E# x# t+ K* M$ _  [$ a. l7 L
set-plot-y-range 0.0 ymax

3 @" n2 y( X- Rend
7 g% Y$ _5 J1 ~% O  E% _
  Q7 h! Y. E8 j6 {- x' U, I  }to setup-plot32 X$ s* N0 K1 R8 i

. V2 [  X1 p3 k! cset-current-plot "Trends-of-credibility"

' }( @$ n7 K, t# @1 D5 y1 S1 T: f
7 A2 G) m3 k% ]2 T" Q+ S$ Rset-plot-x-range 0 xmax
: R7 w. B% l5 c0 {. h
" S* W5 s# J: S/ x
set-plot-y-range 0.0 ymax
3 N; R9 i. Y. p- Y! ]- @
end7 ^( Z" W2 s+ l. k" N
1 |, L: [1 d7 O$ \" W1 H; `
to do-plots! ]/ I" B: T  i
set-current-plot "Trends-of-Local-reputation"& P4 x8 g2 R. f$ m/ I1 R2 w
set-current-plot-pen "Honest service"( W' K% d" c. t: r2 f9 _3 B- G2 Y% Z
end- w" \' Q- p* f

5 X% i2 l& u& R: d[ 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.
& k& m4 k3 }+ W' e) f+ W" T6 f0 w7 Q6 S
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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