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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:
3 u& @& D2 o8 V" @' [. W% bto do-business 9 y+ D. w! t- K
rt random 360
- P/ G7 O5 q; Q fd 1
( F$ N& f6 E1 e, c ifelse(other turtles-here != nobody)[
5 z& n% b3 o1 ]: A! Z: u, O   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 T( Q% _8 ?& x  i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 c/ s( I  \. h! I' ^: k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 z8 U$ _5 R$ [; _* K* T' V% c% L9 `
   set [trade-record-one-len] of self length [trade-record-one] of self) `# }; P+ ]6 H6 T* H
   set trade-record-current( list (timer) (random money-upper-limit))
& @8 ~0 k$ V) L+ s* X
0 `8 p+ R$ K2 p; _; u  ?$ L问题的提示如下:
4 X- K8 O: E$ E, o! T! r9 w$ G5 O9 I* {  z6 s. h$ j
error while turtle 50 running OF in procedure DO-BUSINESS( g) n0 j1 a9 `/ Z4 ]
  called by procedure GO! {( a+ J' W' [, h; E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 Y+ y1 y  S0 a6 b& ~/ |
(halted running of go)
: l1 _3 W9 F$ k1 J+ Y& @9 Q: P; J
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~8 J) d) W- p* t. D, @
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3 K! v4 g$ d4 l6 M' a: |
globals[
# B2 x$ s2 o4 j' o# d# g+ bxmax/ u; N& F+ k& U
ymax7 r- |& }5 c' q
global-reputation-list  q% X; ]9 c: b# ^, y/ V, J

; I# W6 ^: _) ~2 O- i' l;;
每一个turtle的全局声誉都存在此LIST
8 j) k  ]1 c! bcredibility-list! P! g. Z* S! l* C+ X1 |6 T
;;
每一个turtle的评价可信度
* }- R" F$ `) g+ o: K  ?. a& ehonest-service% W' ^4 B2 H: `1 \2 {) H
unhonest-service
8 f3 G- |1 V& s' g. joscillation: N3 b" f5 S( i
rand-dynamic
' B' V1 M' u" J/ G  f4 L]$ ~8 i8 E  O) A

* T: P1 }+ p+ a7 `3 @turtles-own[( m, G4 W: H$ g, M$ }4 r, E. @
trade-record-all0 t5 \. |8 X; t9 d0 ]2 O
;;a list of lists,
trade-record-one组成
9 B  [6 X* B$ G5 v+ A1 utrade-record-one/ a7 ^7 p" L; {  @7 D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) H8 ~7 @. v$ E
# Z4 g3 ~/ z+ 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]]; E1 v  t$ C9 `* c" g# H/ q
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]
0 `9 g. J0 L* l! e2 `+ L  P4 Acredibility-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: n# p( x1 i( N4 U
neighbor-total# U8 q- f7 O% y8 N* b' d$ R8 K
;;
记录该turtle的邻居节点的数目
0 W$ P9 c6 n0 O; n+ z9 F, E: A2 o8 `trade-time
3 K: Y, p+ _9 D( E2 c* V4 G;;
当前发生交易的turtle的交易时间* ^! m) u6 O1 N3 S6 i* I2 n% y
appraise-give  i, ~1 P1 M0 N1 b0 n. C
;;
当前发生交易时给出的评价
6 F7 S" b' J; B4 b; @( {6 p  ?  Eappraise-receive
! {* q; {+ s) ?! R3 ^/ R+ U;;
当前发生交易时收到的评价
# ]5 J% r; A  ]' H) {appraise-time; Y* v: Z, l9 e' [- G# ^
;;
当前发生交易时的评价时间
0 _& U# s. G7 y( [% Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 N6 B$ B% O6 m; Ntrade-times-total
$ C/ v# n4 c# f. ]4 ]$ s! T;;
与当前turtle的交易总次数% S& Z! J. z. }) m2 Z. p! i* T
trade-money-total; ?0 g  N# }6 }2 w
;;
与当前turtle的交易总金额( {: |4 f% I9 m1 G; x# ^! u+ ]; u
local-reputation
8 \! @! U* ]! l3 O$ |7 ], l1 qglobal-reputation3 G, q- W( a0 i
credibility/ U" _: i* ~5 [4 O
;;
评价可信度,每次交易后都需要更新4 [) o/ y2 ~) [+ U$ H2 [9 ^3 P6 K4 `
credibility-all* ?3 E8 l7 K* z( ]! E5 j9 S
;;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 I: b# @+ X- m  |6 s
; j; `5 C* P1 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0.57 R/ \0 f2 @0 Q0 C+ @6 L4 i) z
credibility-one
4 r* B& d; v5 e4 };;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
# a/ h% S- P) xglobal-proportion. P( a1 ?' h8 m, O
customer
2 d9 S, F) C% i0 l- x9 j+ }' |9 }customer-no
( l( ]6 I: P7 S1 L% q, @trust-ok* P* B; S6 _, _1 {# g/ c
trade-record-one-len;;trade-record-one的长度
" N* C# X$ Y0 m5 k2 U% {]7 o1 T8 B; M8 ]( k+ W( Y" H$ A+ ^
$ i; `' V& x- G- w5 j' T) T  ~4 F0 A
;;setup procedure# p& w: a; A3 c' _3 @
6 h" M8 {/ U; y/ @0 H1 }  N  R2 _% L- J# {
to setup
% G( H( \0 |! p& [% d
" o- [. M5 J: U" t  @# f- X* uca
5 m6 R; X3 R! O+ g3 @4 c( u0 m
8 d+ ~" |" x, I  v8 N+ F' X+ J3 ?
initialize-settings
7 C$ D$ w( H! Q1 n
6 A5 Y1 }% d6 N1 v! ?, n5 X( y
crt people [setup-turtles]
* {5 M# R4 z7 h
$ O2 D$ F1 r' o. }/ z
reset-timer

! W8 x( K0 h% i8 X2 t, R1 L2 n- R% D' h" v. `3 ^+ l; O
poll-class
8 N) S, y) X0 @5 ]

; X* m" c1 J! ~8 F3 }6 F, |) asetup-plots

! j+ Y$ p* V* c) f% A. O
6 M4 N5 j3 _! a2 g: y9 O1 L0 H5 Wdo-plots
8 @+ s' Y0 N+ ]9 ?, W, N9 ?- r7 \! A
end' S+ h/ n0 v1 I. x3 D+ v
; ?" ]4 i0 x$ q
to initialize-settings
( I6 D1 E# o0 k8 ^
8 q8 j) @  B' sset global-reputation-list []
: |0 F: G  Q9 C5 J' m2 P( t/ p5 C
' x  I7 w% ]7 n4 e
set credibility-list n-values people [0.5]

: f% Y! S* B9 c, k" e7 V3 k9 ^' f! M7 ^
set honest-service 0

0 n# L, T; N, p$ l  `+ O
  g* u# G. ]0 u% Y1 pset unhonest-service 0
. w* Z* m/ a" F4 G

, W/ Z' M  \/ |: Bset oscillation 0
( i, Q4 k: Q' _9 S! v$ U
' _6 z1 ^2 P8 s9 n5 b$ k0 @
set rand-dynamic 0
& y' B# M0 r, y; d0 L9 w
end
; i8 M$ A8 \" f0 N( ]1 P- H* x
to setup-turtles 1 p8 K! ~" B# D
set shape "person"! D9 k% \9 u- v8 t1 L$ d4 {
setxy random-xcor random-ycor, Y6 x% n# V, U$ l* B( x4 s0 [' Q
set trade-record-one []
6 _; I- J: K6 B/ g: ~
0 t3 [; a" s, g2 ]9 w
set trade-record-all n-values people [(list (? + 1) 0 0)] ' g+ j& I/ t+ z' u, J& N! J- l
1 \0 i3 H, O8 a; y! [& `1 K
set trade-record-current []
; z1 \5 r% n+ e* H- b& F/ p8 j$ ?set credibility-receive []
" r2 R; D- q/ Eset local-reputation 0.5
# h2 I/ {. I9 E1 D+ zset neighbor-total 0  t( _$ n. s- k2 S* i
set trade-times-total 0
  s% N; B- X/ B$ P( O# mset trade-money-total 0
: w9 J. e  i. W- g& m) K2 K" Z" _  d9 R2 cset customer nobody
5 p# f- A" n) q9 b6 bset credibility-all n-values people [creat-credibility]
7 u8 d6 _5 b8 A/ D9 g: J' ?5 l9 Rset credibility n-values people [-1]  n( n, y5 W  f5 x; y2 q
get-color
% x- l3 g: R9 t( l; o7 I( x

. j  w+ i$ z1 `end9 E; q2 w: }* A& c0 Z% f
* W; x1 C4 _2 B5 \! m7 e
to-report creat-credibility
8 t4 E+ a+ q+ F7 O7 M5 x" N$ lreport n-values people [0.5]
. T2 E) r. d9 u3 I4 [end
: b# N% U+ y2 w( I  w. b: U. k2 w9 t% n" u) I" P
to setup-plots
, R1 S8 l% y% m" o9 {
( B2 {& ]; Z- Rset xmax 30

- m) P% q5 K8 u0 Y  t0 W3 [. U
, v5 a% U, ~0 [0 Bset ymax 1.0

5 p$ }  ?% b- u7 r3 B; U( A8 ~) m' e2 O
& _$ F9 y& l) N- r* Sclear-all-plots

; H: [5 y- |. |9 m' o
8 H: J& O+ M/ C% A- k: }8 gsetup-plot1
. s/ n; Y4 O# N. o$ d- X

) y4 y0 a8 p3 B! U1 hsetup-plot2
0 \1 `6 G& E' Y. _

7 k' {" Y2 O0 i+ M8 Zsetup-plot3
- f) E# P0 `- k6 N& Y7 d/ q" @$ i' ~
end" i7 `. c% K4 x- A  _9 j" X

- Y9 U4 G) Q0 Y$ U  G! i" h7 g3 t;;run time procedures. w  F+ a# d# h8 K& [7 H( b6 a
  _7 b& h5 r  N  P& H5 O
to go
1 d. B1 f9 n1 L( `. Z% ]* {! V
) O* j. j# K( R/ L9 u: _: mask turtles [do-business]
( [& E/ @9 F& r  c, H) q
end! \8 w  ^; Q/ G1 w8 X) P; L

, j! y" i6 F& ?9 z7 k  Rto do-business $ Q, t1 Z6 o6 r4 {
& j; t7 _6 s/ \1 ], ?
) T! N4 g+ i7 L. _0 }. x, s
rt random 360

  C! h/ m& N; v8 i1 \/ E2 g* W9 z7 R4 j7 m! I
fd 1

* `5 Z  d. K& D* f7 X0 ^# f0 J/ d2 P6 F, y- [  z" ~1 k+ V2 M
ifelse(other turtles-here != nobody)[

4 U1 o' ?5 [7 t3 `1 v- w0 M& G% I, v' b* M: z9 e
set customer one-of other turtles-here

# Y/ I2 H+ T* E' }
. |# |1 z% H- A;; set [customer] of customer myself

( H/ ?4 Z9 w( v. j
/ c" I2 |( _  n$ D- a7 Gset [trade-record-one] of self item (([who] of customer) - 1)8 u- I3 ~- D, g& V1 c
[trade-record-all]of self
3 B4 Z( T- M- P+ w# M( Y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% M. F8 d" s( P8 O5 c# L" S% ^5 w+ C, {" A  F0 s) r, I
set [trade-record-one] of customer item (([who] of self) - 1)3 @& c$ c0 d7 ^9 L( `& L
[trade-record-all]of customer
  _4 K$ x+ A) d4 {; s: T0 K, s

7 I- x$ w* b8 N& Tset [trade-record-one-len] of self length [trade-record-one] of self
+ d& J! M* [4 v5 V" n3 ?
$ [+ J. N* k9 }( j, d
set trade-record-current( list (timer) (random money-upper-limit))
5 B4 |5 A4 O7 {2 a) U$ j  I

0 ?" O8 v- G. V( h" F: B* gask self [do-trust]; H" D( I5 C7 Y0 J1 W% W7 v
;;
先求ij的信任度
% Z% M: W- ?; U% V& \8 Y8 }/ G* V; y- I. K
if ([trust-ok] of self)& N% L) }' g+ A0 h3 A4 n+ i
;;
根据ij的信任度来决定是否与j进行交易[) K+ [: q$ C; e7 ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 z) w( O4 j' y" g
: _6 U2 R2 }1 p. A$ G. R% h[

' {  h4 c' m0 }0 l; ]* O+ L, h6 b# L, A' S! ]9 |4 l7 h9 `
do-trade

( T% ]5 F/ b$ [; }2 _0 g$ l& m( f) ]0 E: T/ F
update-credibility-ijl

; U- I7 H9 r0 n: X0 Q
& w+ M) a4 n& |* {( g+ I% E+ Cupdate-credibility-list6 M* a  a( K8 P" I
' l7 J+ @3 A8 H  o7 N

& @, j/ P2 n7 P& M* g6 |update-global-reputation-list
- d- `0 \# c& @8 |3 W( [0 n! h* d" i

% ]& r( c2 O) t# b0 P- xpoll-class
  S8 a1 U* @$ G5 ^+ M9 F
1 ^$ y2 Z" B! ]6 `3 Z3 b2 T
get-color
5 c$ p: \. `  y  [4 \
( p7 F. B; N1 k4 N
]], a7 h& ]3 v1 S+ r6 I/ o1 A
6 ?& N7 {  E  q" G
;;
如果所得的信任度满足条件,则进行交易& J( T( }% [" M" R4 M% T$ y; j' Y
! P1 z+ ]# i1 g3 h) ]3 `
[
2 B5 S; I) [5 n$ t7 }8 }3 U; `( k7 y
4 J1 @  X- z: n( G
rt random 360

# G/ M- |2 n" P) P) y. ?" z+ Q; }$ A7 A) y4 Q, ?0 V
fd 1
6 K; v1 s& S) L' g

2 h# U9 M( s0 B$ ?1 }, |]

% |2 i+ `& a. z& n8 q) T3 y( r! T9 V1 D1 X) W
end

1 R/ }" d, M/ ^4 {' m
* F' _# Y) A; S- F/ a# t; oto do-trust ; j8 v, U5 ]2 k5 v( i
set trust-ok False1 Y2 s5 X# n; @$ o' @0 I6 o

! ~1 L5 k; d0 u: x1 C$ ]) f$ Z* w

0 y$ H1 T3 `% f% Elet max-trade-times 0) N3 ^7 u: E- K  U2 J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- T2 w; D+ U$ v$ S, _' H
let max-trade-money 0
9 c' s" [- S0 e& `' v# _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], V" W, x$ ]% p6 B0 I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 z- J5 q; P! H8 y1 M' m0 M  U' z3 J5 r/ }& D/ s; s# B. v8 a" H

% L; ?6 B. s; d; {5 \( s' s  N9 Vget-global-proportion
7 {, g5 Y9 b" [5 m1 e- J$ V) Glet trust-value
8 _, w8 Z/ A' j( ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! u& S# D! J) [, V
if(trust-value > trade-trust-value)  N. x: \( n- {3 y+ d( W
[set trust-ok true]
) @  W* Y  N& C( \. c  k+ fend
/ v8 o! j" ^# U2 J" P9 w, `( w  X8 P0 g; K: v. b! y4 A) d* z
to get-global-proportion0 q# R  s- U0 K! I3 }0 _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 e; U% L% U; ^4 k# }& I0 k  b[set global-proportion 0]- u) {# O! ]5 H
[let i 0. ~1 d' K6 K9 _0 p2 C& B' P! N7 d0 I
let sum-money 0" `3 ]* p" n# w5 Q$ Y: x
while[ i < people]: D: m  D0 A0 i4 W( }
[4 H3 l/ P) E! X1 {9 F
if( length (item i' e* w' p" J  P! S
[trade-record-all] of customer) > 3 )
" _4 Y& K$ t' K2 R0 [! C7 S
[
0 a  o3 p5 R8 P2 P* x9 T. q( Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))# E  R: k; c) {7 I7 e# B
]
: J' P+ i0 U' e]
5 c/ U7 A4 A, k8 m$ hlet j 0
% c8 Z8 S" j, N" A  olet note 0, Z5 v' f3 x# i- x" L& b; u* K
while[ j < people]
5 P* V  G9 T* S4 G[( X( r- Y8 y. `* r
if( length (item i+ @6 `( l& d& ^
[trade-record-all] of customer) > 3 )

! B' ^" k4 u) T5 E, s- n5 F[
6 c' p0 @6 Y' q  W# ]) }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ T4 y: W$ J7 @. e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 E/ P% R; M$ t3 r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- f9 [- T% g. |3 I% w* o. I7 D
]; l7 [- Y4 v' P/ b% w( y. |3 l
]
/ y; S$ t. L4 D( X. K" Y; fset global-proportion note
. d' `0 W3 z* Z5 u& @2 k$ U& h]
  [/ C! i. k; ^( E) y/ |& d) J. Oend7 r$ D, c7 x( l  s+ |
6 O+ d) Y2 k- X+ [
to do-trade
  n8 X" h9 |" w' C& ?8 d$ G;;
这个过程实际上是给双方作出评价的过程
, Q  v% i0 l, |1 m- w+ _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% H: M# |& [5 A; M$ L, Q# b6 g) M% I& U1 Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: J# r2 `( `" M% d3 Kset trade-record-current lput(timer) trade-record-current
; L2 D  Y( N8 o' k" X;;
评价时间
6 |5 F3 A3 t5 ]9 i: L; M, Pask myself [, K% v1 `" x7 }( _8 E8 P& r8 H- A
update-local-reputation* e/ ?3 `) ^3 v+ G# @9 [3 w3 A: l
set trade-record-current lput([local-reputation] of myself) trade-record-current
# Z% r8 q1 n, [" ?! |% B]2 F3 U/ C. \; K8 n$ @6 D
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 F( n* ~4 e0 F4 Z& k* H;;
将此次交易的记录加入到trade-record-one
2 [# y6 a1 a( v( r& [! Iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) B1 e. t: u( E" n
let note (item 2 trade-record-current )( N4 h* ~# |" _$ m" N7 o
set trade-record-current  d+ G: F7 b+ R& v/ l2 C; o
(replace-item 2 trade-record-current (item 3 trade-record-current))

- E1 t  F) A3 L  i  T% C& k. Oset trade-record-current
6 v9 e' d$ m# M+ j( W- V; E(replace-item 3 trade-record-current note)
/ T8 I5 l& K* b2 p) {6 z% @& C
  Z6 b; s" S# L# |
! n7 R% v' N8 B! N( u
ask customer [" G( X8 H% T& X1 }9 f6 C
update-local-reputation
2 e9 D6 O. W' hset trade-record-current2 H/ u9 L5 R: E2 Q' Z0 C7 F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: R" u- `( p" K5 K9 E]" W. X1 C( ~9 C9 G7 `3 f
& l9 T& e( V7 n9 b# l* j
7 _$ f- c0 ]% `6 T1 Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 j+ A* h# w8 z" L' O1 T
, ]9 {% g6 _- @* h7 R
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, O! H, ?3 D! e, m;;
将此次交易的记录加入到customertrade-record-all, e. v0 S4 X1 M5 b/ @6 O+ ~
end1 I0 V5 G% [) i- e% C* B

3 P7 Q8 j# @) t1 V; x, ]5 n% hto update-local-reputation
5 R6 J8 K- X& X8 X5 Xset [trade-record-one-len] of myself length [trade-record-one] of myself. H/ V- x0 k' j3 v, f5 O
  Q# P4 l& `3 x* O# {

+ h6 p2 |: h/ D7 i9 j  J( g, t5 b' |;;if [trade-record-one-len] of myself > 3

1 I) M5 U9 j! U8 Qupdate-neighbor-total$ s5 V& B; z/ P% C6 f. ]
;;
更新邻居节点的数目,在此进行% q; p( Z% i. n7 Q0 y0 `
let i 3
  o+ \+ f2 B+ klet sum-time 0/ \/ @8 a9 _# \/ k' |
while[i < [trade-record-one-len] of myself]
$ z3 w1 T, P9 n! ^2 u$ V+ R, d+ g1 N[
1 T  w0 P/ k* Lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& n2 M5 h, Y& ]9 a+ L
set i1 w0 I+ D) [; D& g/ U- C
( i + 1)

+ @! F# E. N1 m$ M  f]0 E; p! B2 {1 N& D4 L/ E: Q8 h
let j 3. j4 n; l8 a  s* d1 i( m: P% N
let sum-money 0* T4 m6 w; e8 v6 q! U
while[j < [trade-record-one-len] of myself]* L- X" b( ~0 Z3 x. H  ~: n
[/ C- y9 J' ?: H, ]3 z! L, h1 n
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)$ o- n2 g6 O& w
set j
' m, y; r* ~/ o  I( j + 1)
4 R& @/ _& b" D& j, @
]
5 ]( u: G$ P' P$ F8 w! Jlet k 3) l6 f" O0 W; I5 y- I. {! R
let power 0
7 g) R- M' {% Z+ jlet local 02 B  _3 D& e& X7 G
while [k <[trade-record-one-len] of myself]: s; o) s/ j9 e
[$ S) v) y+ V7 `/ o
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) 8 _5 b0 r0 e# s- H- `) @! ^2 r
set k (k + 1)! z" U" k, l, O* L; ^+ y5 W, W$ n3 r
]
* Q, t5 ?3 }6 L9 {( j. Fset [local-reputation] of myself (local)" x% W8 _# Y' W& X. S
end
& u' e+ N( K) N  ~3 R- f# U. }- s' N& ^  g+ |
to update-neighbor-total
! n$ G: h9 q" W9 R2 M2 v& Z& ?! [3 J. O+ ~) \" ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 L2 K: |; v: M' c7 B, c0 D1 A* i
' G8 V( E9 V; J6 Z9 }: d

: @* W3 R& V# pend0 R$ R3 A! f  V. ?6 K2 C! m) |* k
5 V% [, p) X4 q; B/ G
to update-credibility-ijl 2 i& V6 N4 R5 j3 u4 c
+ }4 ~$ t3 y3 y* w
;;
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。
5 ?+ i* b5 c2 B3 b; X5 h; x5 |" C  ]let l 0% Z9 r6 N- T7 n% I, a) C- {1 {
while[ l < people ]
) o5 j' p4 _& P3 O; h;;
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
$ G8 [6 P  T. R# ~$ p! P[
+ `7 O/ n2 d4 D, Mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 E; ~$ x6 v3 X; r
if (trade-record-one-j-l-len > 3)
0 f- B# p0 J; {: j[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-one4 V4 T( H6 ]9 O9 m" C% |! X
let i 3
" V$ ~% U) B' m% [) Llet sum-time 0
( U& G7 O$ v7 X4 Bwhile[i < trade-record-one-len]# ?/ p; O# V. W) H0 M2 |+ [
[. E9 e1 p# Z+ ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" k* p+ H5 G- `/ f) |' N: jset i
5 @$ a6 ]) U+ S& j( i + 1)

2 \1 y. \3 c$ m2 a( [$ I# f' D# A' b]' u# ^: v( Z& I( c3 }- \6 e
let credibility-i-j-l 0
& |# M2 P( X# M% q;;i
评价(jjl的评价)
7 i9 d# Q# a1 C. \6 T, @2 F! slet j 3) Z! C; c4 q9 H3 E7 ~2 S
let k 4
! j" i& ~2 r, r5 s& U" bwhile[j < trade-record-one-len]
# `" s  J: D1 O$ O. W: }[( [3 b3 z6 u. H
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
) e, p  D& t7 Y1 ]" {; y/ |+ _/ Oset 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)
2 K( L; ?$ i; m. Q% vset j4 @0 f2 X8 u- v) L0 {. s: p
( j + 1)
3 C/ S6 r, Z' o! g
]
$ y2 v; j9 ~- U8 ~% n5 Y. p6 P. kset [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 )). |" t- u. _0 K
$ @* m0 J; p3 w8 ]' U7 ~
/ L, p3 c" E1 T7 G. f+ l) U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 N6 }/ ^) {4 g; m) N+ F& w/ t, w1 q;;
及时更新il的评价质量的评价2 u! D' X: }7 R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. n& I- B7 T" w- v
set l (l + 1)
$ R- W6 ]* t7 F  @* c1 _]  {7 e6 f; e4 Z7 A% _3 c
end- {& y8 l/ N$ d2 A9 u% Q0 l! @

1 ]" q4 f: K* `- bto update-credibility-list0 L: ^- K% r/ t1 ]' ]: R, P
let i 0
, s  N! l6 p7 N+ c3 C  X( awhile[i < people]- F  ]; G6 z$ Q  `
[8 @3 b1 I7 s0 o7 h
let j 0
8 P. b9 M, l9 i) W% h( `1 [let note 0
! L2 P5 |8 j6 j% p% t  @let k 0
, ]/ [/ {4 N: f& Z4 u;;
计作出过评价的邻居节点的数目
& W; R! h: w7 Z4 J% A# C8 Q1 W" Zwhile[j < people]
4 d0 ~3 Q1 n3 j' R[" s0 M+ B; |9 u/ E
if (item j( [credibility] of turtle (i + 1)) != -1)
0 `/ S& \0 n' W) Y" A& n;;
判断是否给本turtle的评价质量做出过评价的节点  C* P6 K5 g9 l; \6 l8 O1 ?2 l* ]
[set note (note + item j ([credibility]of turtle (i + 1)))! }& P4 P5 A1 R: [" r3 y- s: A
;;*(exp (-(people - 2)))/(people - 2))]
2 P; p9 v' \: \( q" w7 e' l
set k (k + 1)
# ^# d" k: n; v& s& z; O% c( Z]" T9 \% D( G5 N2 {% \3 ~
set j (j + 1)
+ v$ Y, V& @+ ~' S( {2 F]& g) H6 I6 t- x3 D5 o, |" j: L* m
set note (note *(exp (- (1 / k)))/ k)
9 h7 G2 b7 M  J, J8 mset credibility-list (replace-item i credibility-list note)) a. k# O4 t  D7 d2 e$ d* W  C
set i (i + 1)" p7 G( `6 k( Y7 d' Y% d
]
9 l- G. p$ O2 H& F% `  wend# n8 u$ I. H' C5 e3 S1 h4 n6 p  V
4 X1 |+ M: B3 c! _8 P# L- z" i
to update-global-reputation-list+ R; P. R5 l; R0 `
let j 0
$ `6 o2 O/ h5 }8 s+ ^4 s  a+ p, Q: N: jwhile[j < people]
7 k" r, b4 f( o2 X0 b[
( r/ @+ l/ }! R$ c2 n) glet new 0- [. t5 J4 ^# @$ r! s/ t& m
;;
暂存新的一个全局声誉
- V' \# X3 B5 ^2 G7 R7 Slet i 0  A8 O( J8 c2 {. A0 P) {
let sum-money 0
- e- {4 e3 _9 @- nlet credibility-money 0
1 c/ z2 {- i" d: b! [0 twhile [i < people]3 ~+ j& l% L: W0 B9 k* D! {% Y& H5 a( b
[
4 |& J  _; V2 m2 L4 [* Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): L6 q  v; p4 F( y  o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; [3 V0 M% |( f: c" Rset i (i + 1)
( U4 D5 b7 C  D. g& y( p7 w- u" y]6 z5 A+ m9 o2 L, [2 B3 C
let k 0  p& T9 p/ d5 F1 s3 S6 G3 W
let new1 02 M) c2 e5 j* Q  f4 k
while [k < people]" J$ ]$ @0 {0 Y$ ?
[- k7 x7 Y3 h  D: A4 l* j
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)9 q# O( R) r8 \$ z- W, w9 @6 e/ W
set k (k + 1)
9 X( p* K) ~" \3 W8 d# k5 v5 V]. |3 S6 y3 {: }# Q" h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, n! u, {' Q0 a5 e# X0 Vset global-reputation-list (replace-item j global-reputation-list new), \9 a7 d+ O5 [9 N% Y
set j (j + 1)
- \# z) u: K! b/ u* k/ o0 {& A) M]
" d0 W) P# |: H0 j" n( C; S4 Aend3 D) N' w: z6 [% t" ?* j5 v7 {5 {

! Y! r. E6 ^, E8 R% U
( G) j7 ?0 Y. k  [
3 ~" m2 u3 ^- T/ m1 ?* f* r! Lto get-color
( a: ]0 k& H2 t6 M/ T/ ~- i* Q$ N3 m
1 q4 g7 a$ Q2 x# }; X3 Zset color blue

) l4 V) _, k. z" f; }& |end: _$ d" L4 c5 y3 ~; S
8 R- J6 b+ N! R! F+ H4 M; W- v
to poll-class
5 e/ r) ^$ d( I$ pend$ @: _3 F/ N# y, V" W

( u; d  ]  i" s6 N0 o6 sto setup-plot15 S  M% s( w$ x: j
& N1 p- y- G  h) j4 d
set-current-plot "Trends-of-Local-reputation"

! T: T) o4 ?9 D
$ J/ l$ @; w$ g$ \set-plot-x-range 0 xmax

; A0 d. Z1 X% E( }6 b. @8 L3 u" v; \
set-plot-y-range 0.0 ymax
0 J0 ?0 c3 B: `- h0 A. h3 y
end
' M( M4 l6 v  n
' [- G; B( x1 q, k+ D2 nto setup-plot2
9 l0 R& L* b/ p* I( L3 V( p3 l& U3 _" }
set-current-plot "Trends-of-global-reputation"
0 Q! _3 F9 e7 D
; t% z9 y) z% r5 ?. x9 T
set-plot-x-range 0 xmax
8 E- R/ y2 a1 v. I, m9 O3 g
, @* p' ^- j# v* o
set-plot-y-range 0.0 ymax
  D, y& D  S9 P  I6 Y6 c
end
; X' ~, A6 {# }* z8 {- h
2 ]/ b( @, w; H% H' G6 dto setup-plot3
- @! F; J6 X7 M" u! h: B
" p0 N0 }& ?" A9 P7 f0 eset-current-plot "Trends-of-credibility"

# a& P2 J6 w! M. n) {5 ?% p  y/ p
set-plot-x-range 0 xmax

" O9 M2 n8 p2 L% A. h# o
0 s+ s: T/ |5 l# tset-plot-y-range 0.0 ymax

6 I2 D+ b' o% c  t. Fend* ?. ]% i* D3 g* L
( c3 w$ K' G: v) p
to do-plots
7 Y% O+ l: Y1 h# a, `$ `4 b+ _set-current-plot "Trends-of-Local-reputation": T5 q& |$ Y, [& O  N! v
set-current-plot-pen "Honest service"' V& J' l# R  R2 c! Z- \" D1 J8 |
end% M' z2 d; i+ u; q7 g

5 H0 L, Z/ F1 G: h+ f) t5 k3 r# V6 j[ 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.+ N: x7 I( l) ^' [  S

2 J0 v) ?7 H! ^$ j. q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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