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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:
  g3 t! K, K5 q1 C) |to do-business
' J& F( H; D. y1 L2 u4 B rt random 360
: V) U9 V* l; i2 u fd 1' v5 I& V% }% }7 c* D
ifelse(other turtles-here != nobody)[5 U! l/ I+ ?4 a: u  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.
5 Z6 `! c9 r' ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      a+ [  n+ m8 q1 V8 d' X. r. H
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: ^, |7 F% G4 K# X, i   set [trade-record-one-len] of self length [trade-record-one] of self3 F2 _' P* ^' G7 R# G1 X
   set trade-record-current( list (timer) (random money-upper-limit)). n- R( K5 ?; i- [
+ I, t2 F5 V' \+ U/ N% d1 Z
问题的提示如下:0 ]* _% c7 r9 N5 L1 {/ l$ X, x
: a2 b/ e4 F1 v5 R8 c  ^1 [5 k
error while turtle 50 running OF in procedure DO-BUSINESS. G6 v) B6 t, b$ Q$ \
  called by procedure GO
( z: x( H% y3 O, ?) f, z1 {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 N& Q2 Y- x2 s, u4 G4 z* H
(halted running of go)- y9 B2 ~: R# {9 R# [2 H' P+ g  F3 t
7 l/ g7 A" \3 |2 Q# `
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~~
6 T; E& y! f; M; U' `6 q# f5 Y  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
5 t8 K3 E% S% _globals[" q5 j9 O) m; h  N% O- \
xmax
: j+ u, t7 S0 h, J5 lymax; {4 |- g3 j; I1 T7 U2 B1 e0 }
global-reputation-list6 z! h* B/ l& a# R

$ a, X# Z: p! x$ S;;
每一个turtle的全局声誉都存在此LIST3 S% Q- d/ X0 H" t% g
credibility-list7 H; h/ I9 f8 @, W
;;
每一个turtle的评价可信度
* E, v% L/ |3 D. Y0 C% B- j+ Vhonest-service& d3 t' W' Y- i1 X2 n! e* M% Q
unhonest-service/ f8 y( G" N+ }' {
oscillation
  \% \# C7 d: T, \. vrand-dynamic
/ H. ~3 D( k* g8 {  S7 z]
" \! `( W/ O: X" ?; R
, ~/ n/ n# U: \3 b! S4 Uturtles-own[# i6 Z4 `. h: X) E
trade-record-all' x: Y( b- n0 G: B  \
;;a list of lists,
trade-record-one组成
' F+ D/ I4 j! e: V" {6 Ctrade-record-one
/ j+ l0 ^7 u3 Z# ^/ ~;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ L) [( q* [+ D2 [& B3 M' X# {' t, s6 P
+ o1 c7 ]9 J4 O7 |;;[
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]]
; y1 w3 H$ q6 Htrade-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]* m4 o% j$ P$ Z  m* B  y5 q1 H
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list. `3 u2 j$ w% F) X& P3 W
neighbor-total
) x% Y$ }* |3 e  ]: t6 H;;
记录该turtle的邻居节点的数目
  t( M; H( \: N4 U1 z: ctrade-time) Z$ ~4 u" ^+ C5 o4 U/ z* E
;;
当前发生交易的turtle的交易时间
2 p& n) G" R  v% ?appraise-give
  Y0 m+ g+ i3 g5 {9 g;;
当前发生交易时给出的评价
% I$ d, n* @3 G2 N/ tappraise-receive
/ [; Y  r1 H$ @. x$ s1 B8 Z;;
当前发生交易时收到的评价# B, x* W; G' i3 u( z  t" a! D8 C
appraise-time
/ s1 R2 {5 @2 x5 v8 j" z6 I;;
当前发生交易时的评价时间+ G4 O- e, s9 p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ N; B  g- }- w
trade-times-total
4 K5 I9 u, r. f% i8 e; };;
与当前turtle的交易总次数
' a% I" y9 k, @+ F2 u& h3 {trade-money-total
: E% y# x: m, V/ ~;;
与当前turtle的交易总金额
  ~) f1 \1 u6 n9 M5 \% `: ^local-reputation7 n  O' O0 u1 I: T& T/ B
global-reputation  _0 }6 g1 H2 {2 R- I( @
credibility
. f2 N; g) `' l; o;;
评价可信度,每次交易后都需要更新
  v; s9 a$ B0 }* t' pcredibility-all
0 ~1 J4 @8 s# H;;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
* j1 d0 H+ \* b+ {2 Q. C$ K& }7 r9 ]1 F7 V9 s
;;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
7 o1 m) a0 |, Gcredibility-one: d' @  ?, N1 u# m; 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
) D3 S; B0 n4 K  u  mglobal-proportion% ?$ F9 g* F& E9 s
customer; S7 m+ a  C) h! I/ k
customer-no; }! S& O2 ?5 g+ I% k- F
trust-ok
2 W0 x3 ?+ G& D; jtrade-record-one-len;;trade-record-one的长度+ H  h' R% e. c
]
# b8 u" R3 l. Q4 b( p2 r
& ^+ z& ~9 F2 T4 C! A;;setup procedure
' x- q4 n! W. h* U3 ^6 g& m$ ]6 L6 d5 Z! ~
to setup& m- z! O6 e4 M6 d% m9 ?+ N. ]

: T# a2 Q) p! y. e% j/ Wca

+ {  b. O5 {# R5 }  s% `% M( c. s* Y8 m% q" V
initialize-settings

  d" E: j/ t# M- u' A  U. D. a% q5 O
crt people [setup-turtles]
- a) c  l/ L6 X' D+ M. I

' R; s: W  m/ F$ ?* i2 xreset-timer

! k- x/ L+ \, X; C1 v! u  H- k1 x+ X0 `8 Y
poll-class
+ y! Q/ h. b3 N. b2 H  `+ ^

- e' g( k5 t  g' j% m3 Nsetup-plots
$ g+ ?4 [6 U4 a0 F3 Y
: j6 u" C& c5 ?3 V3 A0 H6 I
do-plots
0 J/ x; F$ P0 J9 s" n
end6 ]7 ?; u$ B- C4 n- B

) v! k; x& {% @2 D! `2 Xto initialize-settings2 Z' a3 G1 c- b) D
5 X5 p2 {5 d1 b( H' j
set global-reputation-list []
4 _2 A% A& X9 J3 L: x& Y

1 }2 y4 M+ _: g# a; x! Q. S1 tset credibility-list n-values people [0.5]
# d" _3 b6 a1 x* A$ C
( V1 @) ?% i2 T/ ~' N
set honest-service 0

- B# |) E2 \, o. ]0 C3 b, D, _  i4 o3 s! w: A% |; X
set unhonest-service 0
1 e& k" r9 }1 G" U$ J

' t1 q# x- v# h* _% ^: q" [set oscillation 0

" b1 a+ m/ v! P3 h* `- K$ {; `% @2 l
set rand-dynamic 0
' I) [3 t% M, a! J- e
end! y( e! S0 D9 H8 H* s6 Q' J! {- B/ @
4 [# T7 I) a8 p) m4 ^
to setup-turtles
1 I9 s9 x+ F8 y. @+ bset shape "person"
0 k( i, R# V: lsetxy random-xcor random-ycor
4 C" D6 n1 ^+ [. f. z1 sset trade-record-one []
+ G; g7 Q0 ^1 ^! m1 q
* A# V% I; u5 ^% h
set trade-record-all n-values people [(list (? + 1) 0 0)]
# e* n, I( e, X* v6 K1 z
# `/ {  X$ q: L0 t
set trade-record-current []
8 Y' O# K6 u- J9 R6 t. y' e3 cset credibility-receive []0 r$ G# m/ n5 G# y
set local-reputation 0.5
4 I2 T1 T+ g, e$ }( q2 eset neighbor-total 0" J; V9 [+ x3 u! A7 m9 e
set trade-times-total 0
- ?- V( X" X0 u$ vset trade-money-total 09 ?/ j2 E# ^! r; T- I
set customer nobody8 ]6 c4 {8 |2 P+ b' m9 Q* v
set credibility-all n-values people [creat-credibility]. D4 y) Z- r6 {
set credibility n-values people [-1]. ?4 U; D( q9 k/ a( h6 W
get-color% a% x$ O# e! u7 y  h5 [) s6 v* H. D

4 L- r4 H) U! K0 Uend) @/ }; v- e) U7 a5 s# p* {

; E9 {( w' q/ t7 x/ O) a* r, gto-report creat-credibility
7 O8 n2 o9 {$ f# z. rreport n-values people [0.5]
$ |1 h2 l+ ^* W* X* R5 Kend
( D, m( ]. c/ d
7 W6 y+ b7 |3 x8 r2 Yto setup-plots& }7 V0 {& n, ~/ I8 }0 h$ c6 n4 Z( J
- k6 p+ Q) X$ f; E& {  M0 }: ^
set xmax 30

: a' X1 N5 k8 N8 A5 z2 U" e8 ^$ a& v7 n7 d
set ymax 1.0
% G2 a. P; x& k2 `$ b6 Z* z3 Z

; Y/ {2 A, A" Rclear-all-plots

$ S3 I1 r. p5 P. w( @$ B$ u" w1 _$ {  k  h: Q' T
setup-plot1
- w! [* M0 ~( V) K; v. b

! ~/ F, P3 M% {/ a1 l# _% h6 x3 }setup-plot2

( W( A2 n5 n4 c2 S4 k* S) p& k# k" U; u1 E7 n9 S5 |
setup-plot3
, Q4 \5 |- |0 d. Z. [
end
; O, D# \3 j- m
# e/ X8 U0 g9 k: B;;run time procedures6 j2 C& R7 I$ q( F; {1 d

% K" k3 ~' j$ }" Q+ T( Rto go
" x. s$ [! f7 R( |0 y! {. w( W
5 R7 ~' q5 ?/ Vask turtles [do-business]

  t; f5 a8 z* z* t2 U; C8 m  J4 A$ _5 L3 Jend, \- V: b1 p# Z
! f8 X- ]" C; ?; k8 e) E0 V% j6 T
to do-business 1 ^( a' {. N9 R/ P9 n6 U
" J! A7 b, l4 W3 P1 T+ g8 z) h
1 i0 ]! x! J& a
rt random 360
- ^; W( q+ R& D  s9 l7 o& l* x
; ?8 k$ k6 e; ]2 o% }! q
fd 1

  D8 I" K1 C! P2 i' w9 d7 }2 A; i4 Z- O/ q2 X
ifelse(other turtles-here != nobody)[
" }" `; M  T/ C; n

9 F1 ]+ r+ r+ v6 N4 P$ ?set customer one-of other turtles-here

$ a/ p& H; a4 O. l: K9 H5 t3 k: K% s# d* ^' L  _8 P& A
;; set [customer] of customer myself
6 F0 c( B3 S  }7 W' d

; ]- J2 ~' \$ Q' I2 @4 s9 [$ |, Tset [trade-record-one] of self item (([who] of customer) - 1)
4 @2 V5 E! Y3 x9 q+ h1 ][trade-record-all]of self* H2 z: `; l4 V! v4 o
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ |( t3 [; z2 I" m0 W7 T
4 c7 m: t+ U" _$ [8 C) _
set [trade-record-one] of customer item (([who] of self) - 1)2 x# M6 U; v+ o
[trade-record-all]of customer
5 c0 O1 g9 _3 @. y4 y
3 a1 q! n  Y" Y- S; C9 K! R5 c
set [trade-record-one-len] of self length [trade-record-one] of self

1 H8 E1 T1 ?' X+ w" N$ S+ J8 Y
$ ?, C1 L# a9 e  ~8 ~# Cset trade-record-current( list (timer) (random money-upper-limit))
# o# t7 A7 H9 h: ]% q# k1 L) o

/ a2 s0 S6 Y/ y3 K7 |5 ]* qask self [do-trust]- f3 ?6 |3 A* ?  s' S4 \
;;
先求ij的信任度' W& F5 R2 r3 U* Q7 g

& ^, ^7 E3 v0 ^4 T1 Vif ([trust-ok] of self)9 P0 Z( w; h* h4 M, E+ `
;;
根据ij的信任度来决定是否与j进行交易[
. y1 z+ L6 m$ x% q5 p; f- {" iask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 e& k  W8 ?! u7 h9 H9 E3 f/ P. a  _7 k: X
[
5 P& a1 T7 |% c. d" T+ U7 d0 V7 `

4 |) t( U" I9 T" V, N& m3 vdo-trade

  N' p  B  n2 ~2 t! l4 w4 N* z; O& V
update-credibility-ijl
& S- c$ e/ E+ v9 D& h9 A9 F$ D& g3 }0 }

4 A3 W: ^' i2 B2 Zupdate-credibility-list5 d6 Y, G+ D1 r+ A- [
7 ]( p& [2 W* N: K& K  H& n& S

; U5 s+ W2 ?3 Z+ c* {update-global-reputation-list

; l5 U) B7 v; e, a/ D' J5 f; A, g$ R* e4 f; j% R' w
poll-class
  ?2 q7 d4 T* t+ w4 b
9 Q: M' U+ V" b/ f8 V+ o
get-color
/ O) y1 n; o$ }. F7 i

  B7 m- r8 r) G6 ~; V  S- a2 e! J]]
4 H- s! b! y  i4 b- F% V0 t4 g& I% z+ a, Y1 w0 k0 b" |
;;
如果所得的信任度满足条件,则进行交易
4 N2 J0 F2 l, r0 k. k6 T. i6 S5 u5 _& v0 R7 }/ f" O
[
: ?9 \& S; _3 O8 @) y. e
/ U7 Y+ {3 x3 ?1 m& I5 i
rt random 360
1 w* e: L7 b- _4 }! p/ q6 |
1 c: q' E0 V* S* A$ v
fd 1
. `) W4 m1 ]* B7 ~
4 g5 n+ A- _0 p) {
]

; {6 }, `# M1 d& X4 c- G7 T% P' H& F9 b. g3 h8 R0 J) s7 s# p
end
- Z5 l5 n" Q8 R! S( t6 u

4 D, H3 P& R1 i  F+ ]4 kto do-trust
/ o8 B9 A. ?$ q: G/ ^/ ?set trust-ok False, _# u5 w, y5 I
2 t8 i! c6 |8 u8 Y# k, X

6 A3 i; f8 t5 {! o0 \) ?let max-trade-times 0- Z7 v! r" A6 m' }* V- Z" _
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% Y& T: f. T7 N0 z# ^let max-trade-money 0
4 r9 \( K& f1 g, Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 j6 b- c9 R& f* J  m. Dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' @. E& a# t9 t6 r- r
5 h+ m! I% r  c' ^* O+ X# c
" H$ g/ |+ N8 g  t2 }9 o
get-global-proportion/ L  U1 U" m0 k' g
let trust-value
- ]% ]6 j9 ]" h, |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)

2 z  F2 A* a: m2 R# _* gif(trust-value > trade-trust-value): W& D, Q8 y/ }  h* R4 K
[set trust-ok true]: \$ I% ]+ v8 B9 T' }
end
: o' s2 _+ t; O' r0 }" n, q4 N; ^
. P+ p# D5 Y0 B6 o4 T4 Wto get-global-proportion* Y/ d3 A/ c* b& W* O0 O8 Q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 e$ ]& u$ ~" l, l0 Y+ _[set global-proportion 0]9 g5 W( u( z4 z& T6 H* F4 P
[let i 04 x; q* w0 s" ]  s- r' m
let sum-money 0
9 f; r3 b" U6 I+ vwhile[ i < people]
' c# r: A, u) m" h[/ z, J0 c6 E3 c3 E0 p8 }& w! j  H
if( length (item i
9 g4 E* K; ]7 q) r[trade-record-all] of customer) > 3 )
8 p0 `% n' f( ?
[# z) z  G+ W- L# `' y0 i' [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( `4 R: G7 y* i4 g' n% p- f/ @
]
4 r9 J7 \( L! S# c# U# K6 g! P]
! N, s2 W& M. N+ Ilet j 0
. w3 S% `! n8 i! {let note 00 I7 F( O* K' g  f( ^
while[ j < people]
5 Y% H# e# r* f7 N; A[$ x+ t( h4 Q2 L- ~. R
if( length (item i* K1 G9 f2 b' X- w
[trade-record-all] of customer) > 3 )
. }: _) }3 i3 S4 \: q! B! |: m: [
[
- S  W3 q9 {/ ?- ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. @) s0 [5 ~/ }; \, Y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( _7 Y, b4 l& c! v/ a* @8 k, B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
, Y$ K) g* `: \, R/ J% f  n0 A]
; N* C9 G: f  H1 E0 ~1 O]% G* Q0 g8 x) y  Q3 j
set global-proportion note1 m3 o8 J% r+ U6 E+ n) `( ?2 v
]
( I/ A. z. k  Y- O- J% |end8 U! U0 M# n% ]4 C

* r" H& ^: V1 F& h9 m$ mto do-trade: n2 Y+ n' Z. K6 f& m; s8 }! s
;;
这个过程实际上是给双方作出评价的过程
/ D% a, m5 ^4 g, {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价# J* a0 m9 x6 C' Z: v3 ^$ A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 l* H" o8 a) [# ?( m7 Aset trade-record-current lput(timer) trade-record-current
9 x& H) W2 S* R1 w( ]: j;;
评价时间
0 f# h) a9 o; x( I) Task myself [% ^! `; \6 w2 `8 }# x- s/ X
update-local-reputation: N5 `2 Y" K. Q  e6 ~. K; ^
set trade-record-current lput([local-reputation] of myself) trade-record-current
! T- m5 H5 i* i* Z4 w( H]
$ `" Z5 z. ?% c2 Mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 n) a* F7 {1 k( r6 C. F
;;
将此次交易的记录加入到trade-record-one2 G+ x% S! L* P9 ?
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 t+ U/ o( ?- V2 N) }
let note (item 2 trade-record-current )
: U+ k3 G0 q) D& s; [5 m- Q% Aset trade-record-current& Y6 q" \5 v) M( P8 ^
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 T# `4 K/ ?* N6 U  Bset trade-record-current
$ T# g+ u; x, n; I& Y* p) G6 N& L(replace-item 3 trade-record-current note): I9 T1 i4 D9 i! s4 \% K0 ]2 w

5 L$ F. y! U# d0 C

4 G' [, W6 l. X" Rask customer [: N# ?: m$ K3 f; C
update-local-reputation7 ?/ z8 l. L6 f, C) X& e
set trade-record-current* A" u0 J& |2 h& Q2 R/ @3 g: t+ R
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' d9 [& t8 l4 [$ Q]
( w9 e( ~' A6 w2 `$ P0 J5 g4 e
$ G2 M. d3 t: g4 M
# {8 p, Z7 J3 P8 ?- X/ Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 B. d8 F& O4 s& h
, m& N: X9 V( |5 ^2 x
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 b7 @: ?0 h, N+ D
;;
将此次交易的记录加入到customertrade-record-all" x' s  E) w* y' W; Y1 J
end! w+ I6 V# P8 b  j  i
4 F: O  b7 X: N3 z
to update-local-reputation. I5 v1 t5 \3 v; b2 j
set [trade-record-one-len] of myself length [trade-record-one] of myself) `1 |8 q7 `6 }+ b7 A
1 s) o7 a) a' [% {, C/ z

) k- g8 R4 B, z9 e1 ?;;if [trade-record-one-len] of myself > 3
7 d# T; O" v0 p/ q
update-neighbor-total
5 ?4 M& p) |# V' L& Y+ H;;
更新邻居节点的数目,在此进行+ h8 W" T! x( X% a" z
let i 3
5 Q- |: I* a. H, a7 Elet sum-time 0
% I0 |- L# A* E3 z& Jwhile[i < [trade-record-one-len] of myself], w- r1 R# c  j  _: q6 s3 S
[
' f4 b0 B" [& o% K5 Lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& c$ J1 e1 t8 }* Y! L/ h" N% e
set i0 V. L; C2 a4 k# I
( i + 1)

0 R, K1 }, Q* l$ b9 [5 [* `  x]
& `$ U( _0 s1 c- C1 d" i% }let j 3
5 j+ a/ m( w* u, n; @  b1 ulet sum-money 0
' ]# b% s# u( M+ Kwhile[j < [trade-record-one-len] of myself]5 A2 A( n- ^: ?: d1 z9 F. b- d" _& q
[9 p( z( R6 F$ X4 }
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)
3 }# H8 _2 L% X) ^9 M, x. c3 j  J" jset j
8 Y7 V. q% q. g% q* T1 X( j + 1)

3 H0 P; o( P3 }4 l, x* m]% m$ X. N! W: u) S( }6 X4 c8 q$ |
let k 3
; u* h; b' h" n7 w0 ~2 flet power 0
1 |4 K3 |4 W6 g5 Llet local 05 G2 V% i2 J; k
while [k <[trade-record-one-len] of myself]
& Z" T6 O8 S! l/ A' g# ?) r[* F) d4 D0 ]" w, n6 {+ j
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) & [+ @7 G7 ?  n/ Y
set k (k + 1)
' T* I2 [& `" o]9 W) e0 j. r, _$ C6 O1 g
set [local-reputation] of myself (local)7 C  d( W5 q$ P# H7 }5 b
end! t( x' P4 v" Z3 f
- i* T3 F7 f$ C7 m, g
to update-neighbor-total' g# T2 b: A6 q8 c/ Q# I
0 e; y- a+ j8 t8 j, _* N/ D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 t# m8 l  }1 F! d  y- ^
$ I: g8 B  h0 Z7 h3 m1 B! V$ ~, r
6 ], ~: l) X9 l, j3 V
end
" m" o. `$ j3 g$ j6 \- S: B
, |  L5 N- Y  v8 G1 gto update-credibility-ijl   H; J. s* W& j' M' M3 Y' ?: n

; E8 l; C: C# U4 G;;
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。  s9 X. \" G7 E3 V) \
let l 0+ ?% ]' W) T; F: x. u
while[ l < people ]; A0 t9 C) N: m- u2 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
: R! d7 r7 s9 S, e5 S, Q[
- i% v5 k; G( ?: R! A8 rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 {3 q2 n9 p  qif (trade-record-one-j-l-len > 3)
1 r; R' |+ U( B7 W" U[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# u, N7 j$ n  ^! d
let i 3
: o4 C3 y7 y8 flet sum-time 0
4 p4 r: g% F- {while[i < trade-record-one-len]
+ L* ]. l$ P& n+ c[/ s0 K9 K: N( j8 a! f. C# Q4 [! ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" f$ P2 }7 V# Fset i7 W- G  ]2 z7 r+ B2 H7 ?3 l" Q. m
( i + 1)

8 q5 n$ y9 M6 v! s$ L& T7 M4 J' A]
. c3 g- H! j! ?! Mlet credibility-i-j-l 04 Y3 Y1 w& z6 M  A, |$ z- o4 o" L
;;i
评价(jjl的评价)
# O1 X, Q5 k2 Q# n0 clet j 3
$ b7 G2 u2 @+ Z* U" w6 Wlet k 42 m) H6 D% G! @2 C9 ~2 [1 d
while[j < trade-record-one-len]
' ]& ?' e. H4 z& g- ]+ ~[$ {, |; \7 O, l& e  P) `. A+ I
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$ y, e' Y$ l# Z+ M5 _0 S
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)
& R: Q! h9 I9 }- f, Q# bset j
. S2 e+ e6 `. u  @# `( j + 1)

/ v* V  ~1 }; Q0 K9 C# p1 s& `% l: H]" ?- h9 S' ]* V4 \
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 ))) Y" p/ \1 l2 R3 @

- ~/ ^+ X$ Y* x- y# h% W# D4 r4 \( }
% S) }7 K0 A7 \* [2 k
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 N2 @1 t9 B4 [$ ~# b1 h7 `
;;
及时更新il的评价质量的评价* _" U- |3 a9 @# R0 C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& g1 d( F% r, B) a/ x0 D. d$ g5 l+ @
set l (l + 1)
) [+ x6 g! r: e2 F1 ^! v4 t& d/ `]
8 j2 W% D/ U* U2 e; D4 iend/ W* [1 m- j6 a/ r

3 {% H/ P. Z# p: s" {to update-credibility-list
  V. {- n  o* M4 Q9 Ulet i 0
) M6 r7 H5 b" o) V" I. W1 }3 r  j; Uwhile[i < people]
; y6 f2 E9 X- V4 z/ d) e9 s[" e' \# S. P$ ?$ o7 y
let j 0
2 Y3 ^# z' g& G3 r9 G' Dlet note 07 h- r7 ~  m8 R6 Q6 x
let k 0
! m& l% z" C4 S4 b2 o% P;;
计作出过评价的邻居节点的数目
  ^# U& i9 W8 k% ?4 k- J, Qwhile[j < people]/ s; {. }0 t5 g4 N; T, q
[! s. I6 }( S  y/ w
if (item j( [credibility] of turtle (i + 1)) != -1)% x; x. u6 c! k! y4 _: `* s# h  r
;;
判断是否给本turtle的评价质量做出过评价的节点
0 ?* D7 |& w0 \[set note (note + item j ([credibility]of turtle (i + 1)))
" Z  p0 K" b1 @1 m: D, S;;*(exp (-(people - 2)))/(people - 2))]

+ R$ K( l( G" x! ?9 ^4 x& d; R8 Zset k (k + 1)
+ [  `5 I) \+ X0 ^$ k) y$ S+ P]
9 l% P- I. j, q* x0 G* y5 wset j (j + 1)
* }$ E, I8 j8 x6 l1 |]# @; w5 ^4 a( ^
set note (note *(exp (- (1 / k)))/ k)
, r4 K2 F5 E9 I/ f% Lset credibility-list (replace-item i credibility-list note)
( z" @5 ]7 n+ J. [set i (i + 1)
" h! v, q4 l3 d" C' k6 S+ o]
! q4 ^6 y+ H2 L1 S, h# h( ]end( m* T" m. C. B8 S8 Z5 K

5 L% Q- W) o$ \( rto update-global-reputation-list
2 g! V% W6 x2 r' t0 W) o3 Blet j 0
: f" g' B) D' ^6 ^' ^8 Cwhile[j < people]# @& R: _* ^$ [! s. p1 A
[
" u4 R; T- u8 Wlet new 0  C) e3 l6 O0 c% w0 M
;;
暂存新的一个全局声誉( X- m8 ~+ _$ t: |& u% A
let i 0; O& g' @$ E- k5 z9 }' C8 k
let sum-money 0& t  v" j5 f- M
let credibility-money 0
- Q) g2 u9 X1 l- Q. ]+ owhile [i < people]7 y  I( X! h" a5 X
[
7 B8 y0 P. s& c7 n: [- eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
" Z: i# E' h+ o' [/ wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- b! ~. r2 W3 E5 h" o9 V4 Oset i (i + 1)3 g$ W. H0 }( q; `( t
]
: J$ b- ?' V" p: G2 U& Plet k 0
5 c/ m$ ?, c0 Q/ [% Hlet new1 0
( n' e1 R2 h$ O: F/ b% w$ v& lwhile [k < people]
9 e. Q! _) ]7 {' {5 f[  @+ I5 ^. e" D9 Y" q3 S4 ]
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)  v9 L* ~* M6 O6 x8 u: z* @1 v9 q
set k (k + 1)
" x2 c* M, n, k$ P. n]
* Z2 m& k7 y( i% }- vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % I* }9 p) |8 J3 g
set global-reputation-list (replace-item j global-reputation-list new)( z! C7 E% ]: a1 s3 N: a- Z. ^- U' ]
set j (j + 1)
" D5 W. U# r. ~$ v4 D( ], N]+ j( X- Q% f; W( q2 d' Y
end
. t/ Z$ A# I- |' Y  Q
4 A. k. r  ?5 C- A0 g2 Q  }7 ]1 T7 {0 z9 s+ G$ ?: {
1 \& ^% B4 z4 y
to get-color
2 m8 F/ @" \. o# D* [1 _% P6 U- [3 o1 k5 t+ g
set color blue
9 X$ x# X! B2 a3 u- f
end
$ C% G" n2 j$ f& M, U( `% }% T
0 E* ?9 @" B! T9 e# i5 lto poll-class
1 t- G9 _% n% M0 uend5 m5 i: g$ h5 z* \$ ?5 w

7 V- U0 n! R8 n% uto setup-plot13 Q/ ~5 r- Z$ E$ T% ]) }
' @% r' M5 W" ?# d% z3 ~
set-current-plot "Trends-of-Local-reputation"

7 o( {, b6 P; [8 r% y2 @2 k4 P. x7 P
$ E! A  @7 F! M" ~0 B- I$ Uset-plot-x-range 0 xmax
2 q* T2 }- l# M& t. j4 E& ]) E
! K( e5 o4 q! q  W& m
set-plot-y-range 0.0 ymax

4 ]$ u2 m5 G7 v! W: xend
6 i9 W" Q6 J9 C3 [; y& H8 Y$ g! v$ R$ {9 f
to setup-plot24 T- b* ]3 I2 N. z

! n, r' j6 q, c3 V/ r  e4 r9 gset-current-plot "Trends-of-global-reputation"

- \. Y  q2 D+ z1 M
8 X: O+ I. }6 p( u& L, ]set-plot-x-range 0 xmax
9 |4 p6 \( o( V3 X6 o
3 V) u/ @" t  J2 w* M
set-plot-y-range 0.0 ymax

0 P3 f5 P7 A+ m. pend
+ N* ~# X' y6 J' T) W1 Z% e
' A( N+ j. ~8 f+ ]+ s0 Lto setup-plot3
8 ^/ d) A* k7 ]8 f. p& I1 g% {" i6 }/ P1 M7 D1 w3 k7 C
set-current-plot "Trends-of-credibility"
( d" @/ z1 U* `' ^

0 V' Z9 |) q, G: [, a5 fset-plot-x-range 0 xmax

* |2 j) M* ?- D2 n8 J0 v" f. C+ F& H' C' G7 K9 G7 P% \
set-plot-y-range 0.0 ymax

; w: p4 h6 _/ `& I! ]end/ K4 P3 ^3 q) E/ Z3 h  }& m* S
! }( e' f+ d( f8 \9 S
to do-plots
! w$ d5 B% }: @3 Y; W4 Iset-current-plot "Trends-of-Local-reputation"4 N0 q+ g+ s( G; Y
set-current-plot-pen "Honest service"
$ n' T, S$ J6 d/ m9 h9 D' P3 wend0 e. b6 v6 l: x: s" O6 |) m
+ c, R) {$ U6 {. W4 n' p% H) i
[ 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.  M3 E$ g* L9 n+ s: ^+ x3 z
1 ^& G$ {7 R- T  r
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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