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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:1 z: p8 Y$ ]3 y  |9 O3 G6 J
to do-business
: P* D8 n8 h, S, U rt random 360
0 [4 v8 P& f2 [$ v: C% O fd 15 ?% U( I5 {) o/ v! S
ifelse(other turtles-here != nobody)[* x- q7 [, l* c
   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.
# F2 b% r3 @  p3 k+ ?) j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" z5 ?' `2 A% T& e- B, h- i( i7 d   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 t0 _4 ]( P4 S; a) C- |! h$ P
   set [trade-record-one-len] of self length [trade-record-one] of self* q* E4 i& b& U7 o
   set trade-record-current( list (timer) (random money-upper-limit))5 L; `" O4 ?. @, |; ?

% \( w6 l# }4 i8 O* o问题的提示如下:( Q4 @# M0 I0 n' e, D( b0 m, Y

* @) _# L/ ^  E9 g! lerror while turtle 50 running OF in procedure DO-BUSINESS
" C$ Z- e! c- U  called by procedure GO/ L/ _* Q( p' i+ L) L" c0 x5 s# i
OF expected input to be a turtle agentset or turtle but got NOBODY instead., [8 p$ w5 ^' e& B& e! F3 J2 L
(halted running of go)
( n0 K1 ~7 t* d
' p# Z* e' F6 O0 x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~~) B  o5 R! g* e: 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1 |2 v8 s; j- V0 r+ g" ]
globals[% O( ]0 @$ c) M1 a' F3 ^
xmax! a+ L# u4 M4 e, J
ymax! z8 i  u$ s( W$ k  h
global-reputation-list
0 T& u' b9 r: G" k$ m0 L% p
. R- G# |$ R% w! t;;
每一个turtle的全局声誉都存在此LIST
! f1 o, }. |$ S1 o, ]credibility-list8 k3 j+ q* Y) t3 t
;;
每一个turtle的评价可信度
# p9 }" o- Y$ |. v( uhonest-service, @3 g; ~" _+ c) m( W# o; T
unhonest-service
" L% ^9 j$ s0 B& S$ y  Voscillation
5 u3 Y9 Q1 X, w1 L4 C' p# brand-dynamic+ n' E# l- B5 _& m# h& T
]
0 L7 e: Z! e6 c0 {, L" v" y& U4 d$ ]  I4 R4 r
turtles-own[
$ }9 h) s) V; }6 p6 q' h4 |trade-record-all
3 N, y/ g8 W6 s  o& p" X;;a list of lists,
trade-record-one组成
7 l" `: S" I" {" v2 E4 Qtrade-record-one
* Q; Z9 U1 |; B- 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3 h3 q1 q6 H) a& U: ]
; L% _4 H8 b7 E
;;[
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]]9 c! `/ |) p! I9 B
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]
; F" B2 v& G& e1 q5 dcredibility-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list0 B5 ?, [7 D! _4 x# [3 ^
neighbor-total
* o$ Q5 R! W! N( G% L' A5 Z1 @* e;;
记录该turtle的邻居节点的数目
0 O' c& K+ w+ W  htrade-time) D, p$ F1 U4 y5 J
;;
当前发生交易的turtle的交易时间
/ F- {9 T( A4 \5 c6 nappraise-give
& l4 N2 I: b6 S) K;;
当前发生交易时给出的评价" ^) G/ d1 U3 q+ l+ J, |+ R$ H
appraise-receive$ ~1 ?7 u* W. k3 X" ?- i6 P
;;
当前发生交易时收到的评价
2 N* w& ^. Z7 w, d+ Qappraise-time) Q0 G. l9 h9 G' N& }, _
;;
当前发生交易时的评价时间
2 p  k8 x! y1 k2 ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉1 [) e2 u0 D2 j( m. `' v! X1 \
trade-times-total+ n) B. W0 N# ?1 ~
;;
与当前turtle的交易总次数# E' x' l6 s' `/ k& L9 J
trade-money-total
+ M2 M6 _8 G! H& }2 u; E9 T;;
与当前turtle的交易总金额
. O8 T; Z+ ^3 v, ~, h# Blocal-reputation! l2 i: W" M, R$ u
global-reputation2 y4 F0 f, N# j7 m- f& y3 V, D
credibility  Q& c% X. Q+ P. `) P* i  f$ _
;;
评价可信度,每次交易后都需要更新
$ X. c- W7 J$ i; \1 D. lcredibility-all
) E( d- n: j* n7 L+ |8 x! Q1 w;;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 ]9 s) I& ~5 O+ M' F4 R; I/ ^) F2 A
;;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
8 g+ a& s: T) J6 V: Scredibility-one
9 V( a! s) t& |+ W3 b;;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- F5 E" [4 b9 @% B
global-proportion
0 x% a6 C$ W7 }2 T9 hcustomer; E8 q( L/ l  z( D4 |' u
customer-no
7 }. I: w1 x0 i( _1 Y: Ftrust-ok
4 P0 B# ?9 M/ j. N* J& z$ i1 _trade-record-one-len;;trade-record-one的长度% H$ j* _3 g8 x
]
: H" |4 z0 i. f8 _
$ M* |3 ?0 Y% W) @;;setup procedure
5 Y/ J7 p3 Z* c+ n0 d; d$ g! ]6 j2 l$ G4 a/ ^
to setup0 d4 k5 x/ s2 }2 H
; U& i; P: Y7 n3 g2 }5 e# B+ [
ca
: @; ?4 ^- C$ ^* ?7 ?8 _' k2 i
+ a. [/ O, N, s% O
initialize-settings
+ Y' V) q; q# h
8 N3 h, M. I% r. t/ H2 B; c$ W
crt people [setup-turtles]
% c/ Y/ l5 _: C  f

0 D" D. [/ G/ Greset-timer

( U5 Z( `% H& B# D- _* L" I9 y# a* p3 `8 I* Y, n4 F. n
poll-class
8 w, _0 }% i/ e; P% v' j0 a5 X

% T: n& \/ b$ R- R& u9 Gsetup-plots

+ P: |9 s3 o2 N: }0 B4 m! W7 q) M0 E3 v3 Q$ Z
do-plots

6 Q+ _3 X  [- Y" k( p2 tend
* O3 A5 {% S9 z7 p1 C7 v# M1 n( R: E3 _
to initialize-settings* R) y: D0 Y- A

: v: A4 N: `6 _8 ^% Lset global-reputation-list []

3 d  `) c( |( V; C3 q' x( b  ]$ }5 A0 A
set credibility-list n-values people [0.5]

: s1 y, m- [  x2 i
2 ~0 L- v+ U! @( y$ sset honest-service 0
  {0 R+ z& S, ]( U: p3 v
; R* b3 G$ }6 Z2 e
set unhonest-service 0

6 K' n7 @# \( v" w& O' D7 o
  H* D9 P4 d& x: }4 @3 U4 Sset oscillation 0
8 w+ Q; f- N0 g' H" G
1 x- N$ b. {* z  Z, d
set rand-dynamic 0

, {' {0 s$ Y  E7 V& W# g$ L: D3 tend
' f. S1 P% D0 v3 G
3 X& ?& T2 \6 }6 b  Cto setup-turtles
" j6 A/ _7 p! S, E, v. v# G; _set shape "person"
! h4 @" U4 n3 Gsetxy random-xcor random-ycor2 f4 J0 m+ o: h4 ]4 i# [& [; k: ?
set trade-record-one []7 s: Q1 C9 R9 p2 B
0 r' `: Q( w  }1 U/ K4 p
set trade-record-all n-values people [(list (? + 1) 0 0)] % P, U$ D: F7 R1 K1 x* h4 w
/ B0 g0 V: F0 S- t/ b) B* B) P- c
set trade-record-current [], Q6 \6 x% P4 q$ A5 }, G) T7 b
set credibility-receive []. o! Y: N6 `+ \; D/ z1 H3 {8 ~( G
set local-reputation 0.5
6 ~0 y1 Q3 ^) b2 W$ Cset neighbor-total 0
5 `, h$ f7 U% y: i, q2 B+ J( Eset trade-times-total 0
( V2 r( V: x8 W) j1 nset trade-money-total 0
. S$ f& E" E9 T1 N+ C. y) A- Xset customer nobody
: }3 f# q) `9 {3 c7 iset credibility-all n-values people [creat-credibility]8 J  T: s, ^" k
set credibility n-values people [-1]" z. i! a- F. P  F8 m8 W& z7 r
get-color
  K: z# V5 C( z! j1 `! M

- x( R$ K2 U# U: F: s  Wend5 H9 X5 z1 d  _2 V! h4 w4 a

0 x0 u1 I# ^5 Y% v# m4 _to-report creat-credibility: Q. F8 q. e- F1 ^3 c
report n-values people [0.5]3 n; n& }# }  w' Z
end: }  H! X7 b! d- h  @
5 z  d, e1 E7 g
to setup-plots$ {9 O- o+ [3 U. J0 I

8 J3 q) q( c6 {set xmax 30
' q6 d! C: _7 K
8 M: ]4 a3 _  k( m, ~
set ymax 1.0
6 q% }, d( V( Z: s4 w
8 x. b  W! c0 Z. A  x% ~2 r4 |
clear-all-plots
/ ~/ j* f! r! }# b/ \. `
/ q. D# C1 V- M" v! \0 Y% J( J
setup-plot1

+ x6 O& z* V7 P0 \4 p2 P, j0 i3 w. r& o! n1 N4 j
setup-plot2
, o) O2 z7 t9 m) X  t
! N4 d$ I4 ]( g2 b6 o1 h6 J+ W
setup-plot3
# @% ]. x+ `, }0 `1 P* s3 X
end
, P5 n7 h; v) g4 h+ I8 j+ S6 l# Q. e' e8 G
;;run time procedures; Q2 _  _, n4 h# r) T

  a: p; x/ z7 Zto go
# S; j+ s7 K* w8 q) i" @
! X4 `6 r) J1 s5 {ask turtles [do-business]

7 G) z4 ^3 b+ dend+ Z1 C5 |5 z& p3 e5 a0 m" t

9 Z( E( R: U5 p" R# D3 y3 ?# H/ }to do-business
+ t" n" h/ z$ O' e# A) f6 Q
* _6 }/ G; K; w# C5 g2 C

8 s& a4 X# v! W9 J+ R& |rt random 360

  O- @1 U  q3 Z6 W8 K# w( G' I
9 r& H$ R) z! i& E% lfd 1
: o; Z- k/ U1 s2 t
& A3 X7 m( E& @0 e4 W7 n
ifelse(other turtles-here != nobody)[
4 X( ^2 N/ D% B
" G! P2 k% W# s  f! B$ f5 D- `
set customer one-of other turtles-here
% l8 |% A( T; x# c* Z' u. o) j

! ~: z5 V4 O- J# O9 X;; set [customer] of customer myself

7 m0 N& }+ v. F( o4 T
8 Y# l% A7 r/ w) J% L# r" @1 |4 Cset [trade-record-one] of self item (([who] of customer) - 1)7 G% y. V* C0 Q% q1 l
[trade-record-all]of self
# E+ \$ _8 ~' |" g5 K9 S% V2 a5 @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& e8 N( b* g# p; n9 O" a  z3 m7 m4 n) w5 H) O
set [trade-record-one] of customer item (([who] of self) - 1)
3 q$ ~' ^5 m( J& W6 M, z8 [[trade-record-all]of customer

8 y! f* \2 |& e3 p( v
  D( O& X/ y" B7 ?$ [. j& Z1 Gset [trade-record-one-len] of self length [trade-record-one] of self

/ I  ~/ j9 v6 a( m$ S+ p
$ Q' e/ L9 O9 V  V7 \set trade-record-current( list (timer) (random money-upper-limit))
) k7 M" k( a0 ~+ L8 a  a, {) b
, b: D) A& X# R* }
ask self [do-trust]
0 ~& T& x* X+ e;;
先求ij的信任度( C1 f4 P8 ^9 R& N/ h6 _

! t# x7 d; M8 ]- {if ([trust-ok] of self)) L/ `) J! x% j5 ]2 f
;;
根据ij的信任度来决定是否与j进行交易[, r0 W& B0 Q; n9 Z$ r3 F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 N; E; Y9 P0 k6 o7 `

$ y( J. y- Z4 N( E- E9 x[
  j5 [  |. p3 \  k  j  E5 W% y6 C1 ]
5 K) T+ o: h0 a0 X( L
do-trade
% Y- U0 H+ t9 T8 D" [6 y1 a( s
( r+ ?2 z2 j: O* Z
update-credibility-ijl

& r) q  @2 f2 d  y" U+ G3 U  t. y
. |0 u' K; C' b: \8 ]; |( x, ?update-credibility-list1 w) M) o" o' t. l- H# I7 O) ?( M
8 T7 J% E& P2 w% b; D
5 S& f, q' ^, F/ L8 U
update-global-reputation-list
; b) X. h0 |& S

: P' Q* f) Q& n& h  H7 Spoll-class

& x  ?4 i* M% p' z
6 k6 s: U; p( n" Y7 i* cget-color
% l% [+ m% c6 d6 z( N
% u3 d& \! ~6 V! w) B5 {8 G, K* M
]]
( \& i! A9 u$ j5 Q8 D1 T- h# _% X  U$ `
;;
如果所得的信任度满足条件,则进行交易
6 h" m  p" K2 z# ?# r
. l0 `4 c3 Z6 f[
. Z, R: Y' ^2 u2 c% [
% g+ ^1 W  N. J8 r7 e
rt random 360

1 D  L% s0 p5 u. ~5 [  D3 i) g8 F; J+ p6 c( J6 |; K
fd 1

4 `6 V! D& u, Q
$ o6 P1 Z6 ^0 y0 W3 `]
) ~. q# a% f" @% k# i9 A
. W! b$ L5 J  B8 M
end

& G5 [% s2 p7 I4 [$ x( l; y# y$ N( ~6 t+ N( S) n
to do-trust 5 `( H7 G7 ^. ^+ L
set trust-ok False6 D- _5 D- A% \1 z1 F0 K0 m' c! I

; j( l0 h* V; l9 B" G1 `. m; _/ Z
0 g: S" U) Q! T1 T/ B! G5 f  o
let max-trade-times 0
# i- O9 D: c+ U/ v( [* X8 Nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* {+ f4 V1 l5 f3 B' Q, z6 b; D; t/ Slet max-trade-money 0
% O- N% t6 Q8 z+ M% j2 e/ Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& N. ~) j3 ^  F- j5 Glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, W# }( }* [. n7 L3 r9 R& v9 Y+ u1 {* O2 Z3 @

* W0 Y0 x; H2 m9 T  oget-global-proportion
! |4 |. t5 X2 V. N; O' Clet trust-value$ m! C' M' ]8 d: |) E! p) q
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)
( f0 n& ]$ y% d
if(trust-value > trade-trust-value). t, j! h9 K% A1 P
[set trust-ok true]
$ u6 [3 E. l# g6 Yend, T  o8 J1 Y4 q2 w; l/ K1 [7 I! O9 j; _

) I5 N, B* e+ D; m; I0 _to get-global-proportion2 ]/ A/ v$ u! E& z5 c4 R
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). [, C, _; A# J
[set global-proportion 0], ]8 P3 J# ]- N
[let i 0
8 b1 |9 V) `3 Z+ U7 vlet sum-money 0- d. e1 H) U0 {4 n8 D. L$ c' C5 y4 W
while[ i < people]0 |7 u) i0 }& e/ |" A
[# J1 z; u9 C  u) x+ x% b2 {
if( length (item i
& O" V8 O9 P) I, G5 `& o2 e[trade-record-all] of customer) > 3 )

* W' B. i' E- p  r[
$ Q. b0 [3 N$ B. yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ C% ?( w5 h* O' T; Z, b& I]" e& E$ s; C( ]6 U( M- A& _
]) f6 ]+ ]1 z4 e9 _* @' g3 q
let j 0% T1 w0 Y8 v, i0 u  `1 T
let note 0% C  d! ^4 O' H+ q  A+ x9 t
while[ j < people]/ E% {7 d; c( B
[
, m  {/ G/ T3 w- l8 Wif( length (item i
& l0 Z: _1 I& j. x5 O6 S: l[trade-record-all] of customer) > 3 )
7 p4 J5 ]% c3 V% m
[
; }* V' v# r* y$ u2 tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ r- s6 U: F) v  l; v6 ^
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) J3 u( @; B5 [. X$ T6 T$ A
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: ?" y. p2 x4 w( _( w, v
]
) v7 Y$ ~& n" d3 W2 }. [/ @  V( P& N]* P- `  l  {. k" S
set global-proportion note) W' f# n! p) T0 b6 ?8 q
]( r  ?& t- o8 G4 g
end6 d: }. e4 n! ]5 C) E
9 g! }& b; _9 ^% p  r* u/ r5 J; x! ^
to do-trade
% ^% ^& w" g( _" i;;
这个过程实际上是给双方作出评价的过程
( }! O. j3 t, o: p, G$ @" w) Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! V! l5 X) m) C6 A) K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# S0 c) t& M' ?0 z
set trade-record-current lput(timer) trade-record-current/ ^( L! w  D8 A
;;
评价时间0 d: n! s' N* u1 r
ask myself [) ?; E7 f5 D  M* c, _* B% y; x" j
update-local-reputation# V& _! A" i; `- `1 a- e: D
set trade-record-current lput([local-reputation] of myself) trade-record-current
) C/ ?3 T. Y3 R$ A]
! S4 ^2 s5 l5 f& i7 a' ^% R7 i* u4 fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 X4 D, Y( ]7 q  L
;;
将此次交易的记录加入到trade-record-one
; ~1 f0 D$ d1 P) I6 F+ `set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* w# z% J0 v1 j
let note (item 2 trade-record-current )
' ^/ w% U3 P& x5 j3 U1 kset trade-record-current- a' Y/ e* l; g( _; A
(replace-item 2 trade-record-current (item 3 trade-record-current))
. q# o' w: P" g: N* d+ N
set trade-record-current' x/ U- u. O: ^( w. d, ?
(replace-item 3 trade-record-current note)
- c6 a9 W: C2 n0 e# o1 P" n0 ~7 O8 p3 h5 I) x( K

6 g- F6 E0 x1 j! A8 ^: Z8 K( }ask customer [+ o) ?& B# K' m
update-local-reputation
( I6 U  x; E, R1 \/ hset trade-record-current
! C0 }2 T! T# |6 b2 g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 b7 n, ]* Q7 I2 P8 I
]3 A, X& w+ B9 y. v

( R2 M* {: k8 c* K2 s( ~0 N0 U7 ~

0 y1 ?# [& r2 @7 y2 {set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; Y4 p$ n: ^* B( x5 T& V+ \) u
7 y  y) R1 X# Q3 F: {: c% O5 W3 E
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( H) N9 J- F. ]0 \;;
将此次交易的记录加入到customertrade-record-all4 x& C3 r2 h2 o7 v' p
end* \  N# Y* P8 p8 ^8 F
7 x1 }6 R4 J! r; h5 B
to update-local-reputation
. A% @! x: l" _4 q  }2 Nset [trade-record-one-len] of myself length [trade-record-one] of myself, `' c2 `) `. K8 R! [" O2 C7 h. i* s
, M7 G2 t0 ~8 n

# ~1 u8 Z9 ~* h;;if [trade-record-one-len] of myself > 3
  h3 d8 G) B' r) g
update-neighbor-total: F3 d* ]" Z( k4 @7 Q1 d5 G
;;
更新邻居节点的数目,在此进行
& G' `* B9 }) ~3 }: Z* M% jlet i 33 q9 O4 G) p( j( p  g( J, A! }# E
let sum-time 0; f& Y# I5 H7 Z1 j0 k
while[i < [trade-record-one-len] of myself]
# r) P$ c& n0 Z! W* q, u[
; c- s6 D7 ^. U; Z2 F6 ]$ g1 g6 Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ H  P: {# _! U; r
set i! z4 d" x+ W) o/ i
( i + 1)
6 k9 E' Z: w9 w
]+ n8 `& u6 c! F6 S3 T! f6 Z9 s
let j 30 G. S4 E3 e1 M" ^) @. X0 C
let sum-money 0$ j% v3 V5 ]# P0 Q/ ^3 M
while[j < [trade-record-one-len] of myself]2 P, z# Q0 U- n0 o0 c
[, ~: c/ ?# I% r9 f$ T: e. h  v
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)8 p8 Q' q# g( t: R/ t' ~$ t
set j
8 f/ \& [" I$ c  Y$ m$ e' S7 q( j + 1)

2 G' d3 C* c2 X, O) M]  H4 `7 z: e, L; ]3 q1 w0 T
let k 3# q1 Z5 C2 G7 P! t* l: Z
let power 0
% V# _! X! e# hlet local 0
% c- n5 [0 v4 {9 {$ R  dwhile [k <[trade-record-one-len] of myself]
1 w! M( K2 d2 B  T[
; A' i. L  l) s# ~) `: Bset 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) 3 V& i1 u; n: g4 R: g; O5 g2 m7 v
set k (k + 1)! p5 c+ p9 V; C7 o
]
: p% S- c8 t+ \set [local-reputation] of myself (local)
0 y% v- l2 Y9 J* vend4 q* _3 S' c+ J8 F7 N

! p  s, H& B3 pto update-neighbor-total  F+ d7 d% ]. B* \7 t6 H3 j

/ }0 d# {! a3 J6 eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( L( b) `8 h3 ?" R
  P/ {0 B  H/ s

3 i$ F1 U$ y# T* jend
4 p! i9 G4 D4 ^; Y$ o
, o9 y0 X5 C& d6 F' b$ ]8 Kto update-credibility-ijl
, A& Y8 `! E6 X- R9 v$ p  F  Z* e8 o$ 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。
1 F: {- v/ S6 b1 X7 a* elet l 0! Q3 Q: U" M! Q* t7 r0 q! Z; P* S
while[ l < people ]
1 l2 Y7 H& e& |0 X" Y- Y; Z;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
! ~5 p; \$ `& y: u4 `( C[4 H9 h* Y; I0 d; l/ Y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 I0 f* T( A0 U8 M7 ?if (trade-record-one-j-l-len > 3)
0 b0 I5 U. A: ?" {3 b' [5 _& d  f[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, I7 [; v; Z, n7 n& P8 m
let i 3
9 R! l  n& d1 R; Z7 ^& q+ M$ F7 M3 Glet sum-time 0
# z8 P5 k( Z& T, R* C1 kwhile[i < trade-record-one-len]; R7 s: ]; A0 {0 x! H/ }
[
# |* \7 W$ {9 `4 ?0 lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" L3 s5 a4 H3 ~set i8 N1 Z) Q3 W6 P0 e3 A
( i + 1)

3 z9 I, t! Z% U6 u]
+ _% U; R" E: f' r5 t9 L% a) U2 l  Qlet credibility-i-j-l 0( }# E+ O; J/ h+ U- Q/ m( o
;;i
评价(jjl的评价)
1 R2 m- C0 B# m- N  W  qlet j 39 C" l& s+ n0 ?* b
let k 4
: q7 l7 T; T8 q0 G( Dwhile[j < trade-record-one-len]
7 K5 g0 Y) E" E$ y  b9 c0 v[7 @4 `0 z. _' j+ t- n( W) O. e+ o
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
+ A( N: C9 d2 V$ g4 bset 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)
4 J8 ~7 \8 p! j1 P( Iset j: P# l$ _/ F) v5 K) G" D/ A! t
( j + 1)

( N# n3 \1 _' S% p3 o6 k! n1 W]
2 v2 g% }6 n+ ~! ^8 O% ~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 ))
7 ]- N+ |; L' W7 W) m8 X% K8 @

+ b; B3 q7 i* x( j+ L1 alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* Q7 L6 K. {, p8 Q;;
及时更新il的评价质量的评价4 ?5 V, @* R7 q# D- C$ W9 @+ I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" i% k9 h; _" r% ?$ Fset l (l + 1)4 U. q* \/ Z: Z; j1 k
]
5 L; o3 M; |$ A9 b7 J2 E1 w8 Mend4 y+ e0 j, ?/ }" N7 k7 e7 o8 R" N
1 S$ E5 B' e+ y
to update-credibility-list$ h! }' {; E* c6 _* v- _
let i 0
  V* k5 j9 o7 e" l+ m0 \+ g, Xwhile[i < people]+ j% e& U2 g8 m4 X
[+ ^" f; ^# Z( v( ~: ~5 B+ u+ u
let j 0
7 z/ h7 Y, p9 ?" Y+ F$ F( ilet note 0' H; q1 o0 J3 B* v2 Y4 E/ J. {! g
let k 0
, X3 @' b4 h7 v; k8 i. X;;
计作出过评价的邻居节点的数目
# a  w3 y: N- R8 B' uwhile[j < people]( b; z  f* y( c, Y8 k0 H
[) w: B) s" Z4 ?+ k
if (item j( [credibility] of turtle (i + 1)) != -1)! r/ l7 `$ t% G9 U8 j0 M
;;
判断是否给本turtle的评价质量做出过评价的节点
/ A7 o9 F. i8 u3 d, c: Z3 C1 O' s[set note (note + item j ([credibility]of turtle (i + 1)))2 d3 w1 o/ Z* I3 d
;;*(exp (-(people - 2)))/(people - 2))]

3 O: k3 n& j2 Bset k (k + 1)
# e% A4 ?0 t- h- R+ S6 c5 k]
' H( @; N- h4 g! B# Q2 p% qset j (j + 1)
0 y& Z! \- I1 N]! j& p7 ~, [/ m2 e5 O7 R! o- R
set note (note *(exp (- (1 / k)))/ k)- L# G9 P& m+ w4 s  ^* A. w7 h
set credibility-list (replace-item i credibility-list note)2 R. ^  s+ Q& {. ^
set i (i + 1)
" K0 k  G2 z" J3 h- |]! u( u- Y) \. u6 T8 }* _& S8 R
end
! c' m9 M: [, J3 U0 a, F! Y
% V. u# h* e1 K4 I- S# bto update-global-reputation-list' Y# M: X' `6 r8 J* `  v6 f' B2 D
let j 03 w* }" l9 W- U
while[j < people]
! |* u9 s( K5 ?1 P[) V" B! N* L5 e
let new 0# M) c& {) N: A
;;
暂存新的一个全局声誉( N- N9 f& _$ l7 b
let i 0. o: {+ E9 y6 `# A
let sum-money 0
' A1 S$ ~3 H# |$ u2 qlet credibility-money 07 h) F1 W& b6 E) T% Z% F7 h
while [i < people]
! j$ }* Q( s& s, T1 L[6 E6 d4 a( V, U2 S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" c/ a: s) y- L- Q0 M: ~! G. W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 h4 k# Q" U5 x/ S/ \
set i (i + 1)
4 t' M* C! |* u4 K' e3 P$ E# D: W]
; D: n) \  u- Olet k 0
& g* |3 E  C2 Ilet new1 0
; v2 V' l( R) k3 H7 owhile [k < people]
9 X! J  s0 W6 l/ x& s[
  Y- q" ^) y; ^6 Mset 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); C; T# `; e/ E' o3 F
set k (k + 1)
) F( B  r3 Z% d5 u+ ^4 Q1 b]4 T! S" J/ A4 e0 |+ ]
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 o/ c! j# g- H9 [: }' J/ D  \, xset global-reputation-list (replace-item j global-reputation-list new)
. c9 `# f2 A) v* e* \2 Uset j (j + 1)
) P5 y: ]! B- f1 _7 z6 v4 []3 n" J7 w$ f7 f: {/ w
end& y/ ^" v0 \8 v+ H# i, R; J& o5 L  t

2 _- q- Y% w8 x) W9 e9 y
, `! E* {3 ?! b4 S( I) ]+ U" n; x, p
to get-color
/ r7 a) s. T7 K# p
2 h/ o3 ?- X& h6 s5 Lset color blue

; u$ C+ A% ?# W; [( ?end
- c+ U6 w# s1 }1 v" u* l
' ~% Q: ^  V  W+ d: e: g. {to poll-class! f3 A  [& ~* m% I
end  D3 U' t, j( W5 }& }( b
* M6 g1 P1 [, L& i6 i. `2 Z3 B
to setup-plot1
1 Z+ R* w  k; S( ~
- E1 V( k! B& V9 f/ ?0 Z& m/ d+ Dset-current-plot "Trends-of-Local-reputation"

8 n6 m( k4 @  _" {' H- i( k# B9 L1 {5 A5 T' d/ O8 W9 z4 [
set-plot-x-range 0 xmax
" v$ x9 f' K3 C

7 {9 a) v$ G! R) j. K- p4 T* o9 sset-plot-y-range 0.0 ymax

% i+ ]& Z* C2 y3 \end
3 z# y2 O! i- ?0 d/ Y$ }, h8 T+ w9 P7 B' ?' u
to setup-plot2
/ T0 z* w; b9 l$ s! I' t6 g9 D/ U6 _0 J$ y
set-current-plot "Trends-of-global-reputation"
, _6 d2 }. e  A7 g9 W  E" V2 a; X
" F8 C7 `( d$ A* z& M2 @% P
set-plot-x-range 0 xmax
$ }& g0 \& l; j& I# I7 j% ~
. i) ?! y, t* D, y8 i  u
set-plot-y-range 0.0 ymax

" F+ d9 W2 x2 L) x( rend
1 }2 e$ Y) {  v% u7 W
1 w* \& b1 a4 G3 ato setup-plot3% X$ x6 n4 L, B  _
2 o4 n! a5 z: W0 u% E
set-current-plot "Trends-of-credibility"

5 E0 r' }( O6 l4 K2 J
& P: X/ Y& y  v3 Q# N. nset-plot-x-range 0 xmax
9 B% H& @# q. b" t
4 H# i0 N2 v, L; g
set-plot-y-range 0.0 ymax
. ~2 ~, u+ {1 H  E
end
2 r! D8 G5 v* N- S* \' z+ r6 \; z& A# j" ?+ A' _0 M
to do-plots
' [: c0 x" ^' b3 I6 oset-current-plot "Trends-of-Local-reputation"8 r1 j/ R  e% B, k3 D% |% C
set-current-plot-pen "Honest service"8 s5 e- p, H5 T7 S9 u) O; m. h
end3 z9 u" k, s, w6 Z* q; i
1 E( A- I& Y7 y# r
[ 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.8 S. p5 u$ S7 ]) Z2 A* _- D

7 X. n; u$ G  h4 c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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