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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:
2 U/ i4 y9 `% W/ Wto do-business
) n0 }1 |4 ^. L$ l  V5 P: R! f# q4 k rt random 360
1 U0 R# f1 h, X8 ?' y! ? fd 1" e% g: C* |& w5 [2 Z0 `
ifelse(other turtles-here != nobody)[2 h0 G1 _7 ]& l4 t, w8 u- ^# b
   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., L' e4 F5 L3 v, i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 p, Z9 K3 \' v; }: w" }' z
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
- R4 z+ a/ s/ c% m   set [trade-record-one-len] of self length [trade-record-one] of self
5 D' W3 |$ B6 W% j. K- P) t& o   set trade-record-current( list (timer) (random money-upper-limit))
5 H" S5 A  C' p! Y* z+ f
9 i: q. q' B: }2 F% `; R问题的提示如下:
" t& ^0 _, j+ Z' }! O; o: e- m5 L- P# D3 p% u  X, {# C
error while turtle 50 running OF in procedure DO-BUSINESS
7 ~+ P! m" f# {- K. @  called by procedure GO  N9 [0 j  I% f+ _0 X* X/ ~5 }
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
& \+ F- [  v  t! C! o
(halted running of go)  Q$ S/ }2 d* C  r# ~' j7 L1 x
; E8 j4 p5 E4 U8 ?
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 Q) y4 i% O  ?& Y, L1 n  \, 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
. X% n7 B9 N# Aglobals[
% k3 \. s  q, @2 Q! w- mxmax* i" d  u' {) X& ]7 p' Q0 M8 n5 ]
ymax4 D: b3 M4 ^2 X7 w1 ]6 y
global-reputation-list
4 f# h3 A4 p0 ?/ }* T6 j4 F; P5 f1 x: y* O8 N( t
;;
每一个turtle的全局声誉都存在此LIST9 I' i# k, n: {% w7 B
credibility-list5 S8 b7 A4 ?1 ~; v) e$ ?4 j3 C
;;
每一个turtle的评价可信度: K7 _4 F# ~$ i2 Q
honest-service
* v$ K1 N8 @7 [& punhonest-service
7 w7 p, x" z" v" roscillation
2 F% E6 ]* C9 O8 i+ T& Jrand-dynamic4 E, k+ X: W# j1 M
]
5 D2 j: _: h8 M9 {. G8 m( T; q6 q5 [) G$ u: j
turtles-own[) k5 `! g* U4 L( V3 {2 J- e5 ?
trade-record-all, G4 n& Q- G, ^% f% G; d+ s
;;a list of lists,
trade-record-one组成
9 o9 A; I" d# Ltrade-record-one
7 H$ `* k. w9 T8 C% a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 Z/ s2 W. U8 a2 r$ g0 I3 H$ Z, ^

4 v: D1 s$ [8 H0 Z" U% e" _/ U;;[
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]]
7 B% Z/ B' ^. v  vtrade-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]! g3 G5 N: B0 }& p' n1 L, x  o
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
8 G( S2 f6 T& I* c' @neighbor-total: k% y! p7 P  J% T2 f
;;
记录该turtle的邻居节点的数目
4 h7 C( u& Y' {* L6 mtrade-time& M$ g" H) T3 E' }' W
;;
当前发生交易的turtle的交易时间
# W% [6 v3 e; I0 B, y, M6 ?appraise-give
( q" z7 T; r# w% Y* L7 E+ m;;
当前发生交易时给出的评价% P; Y/ k( }5 I
appraise-receive8 [5 i4 ?/ ?' o; m2 o
;;
当前发生交易时收到的评价: A' x) ~9 e: n. ^* K. w1 p
appraise-time! x; k$ a7 X' R  x7 x  }
;;
当前发生交易时的评价时间
3 H/ H! {! W9 x2 w/ E. Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: m, {5 S4 K0 R' S) ?8 ^trade-times-total+ T; R1 o! S3 `4 C) {* n& I( v. K
;;
与当前turtle的交易总次数  c, w, R/ n. K( q$ t! Z
trade-money-total
+ p; L( c: a6 t# y" x: L  l; k$ k;;
与当前turtle的交易总金额; y1 O: L& o2 _& ^
local-reputation3 |. c- C  n+ O4 n1 S2 b6 k7 x
global-reputation; O& ]$ L" h! [
credibility
  @9 G7 b! F! @4 j;;
评价可信度,每次交易后都需要更新
7 ?- b+ b1 M2 o! _* j" ucredibility-all) ~, _% Q- |0 o) ~# f( d+ ~8 k' 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
$ a0 b& n$ J5 [( h* x2 h* F) q8 s3 [( x: B% L9 c" H
;;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! L/ O8 E1 L- j8 c2 W4 s
credibility-one
: N- m$ @- ~' I% e8 h+ E0 Y;;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
" e/ ]8 y9 w0 w8 K# h# K: zglobal-proportion
! v: t! Q' V: f. G1 wcustomer2 B5 L' ^' D0 i& N2 ^0 o
customer-no
4 C& H2 f% e- ~* Q) [trust-ok1 U' \; @+ k3 i$ I
trade-record-one-len;;trade-record-one的长度3 E. `3 u3 R6 k/ R/ i/ `; J
]/ c5 T. H/ D  s; m( g8 P

4 t6 E5 }$ i& l! b- o: u, k: i;;setup procedure
) q* F# W9 r* r$ v0 n( ~$ u5 z; J* W& R6 J+ `; _
to setup# Y' ?# s% K. Y% L3 p- Y7 E

. c( j8 P& _0 B$ j8 S; vca
0 H6 W' }- U- G/ L
" O& t/ D) C& A: [! F) r" L2 \( ]
initialize-settings

2 I! B. B( c6 s* T' \6 ~5 L. P; h) s( @+ W$ y
crt people [setup-turtles]
1 F7 ]6 H/ R: M( J% x; f& E0 x
- J  I2 |+ M+ m5 n4 F. K9 n$ \
reset-timer
: n# U% H% O/ C. w, @# e: l; b
) N3 E, ?7 x) G. L, k
poll-class
' v3 B( Y$ w1 V" L

2 A$ Z7 ~/ K: g2 w6 G) i0 Msetup-plots

, M$ n( A- }: X- k' C, \3 m, d$ q. {; R) a$ B& j
do-plots
; ]) f% i0 A- F4 x+ t- O3 x0 A
end
) ~5 c9 z: v; c* \" D6 U0 N% b& x& p& q, d0 ]
to initialize-settings
6 [  B+ \/ _  B2 A4 q
1 d) Y1 w& e1 Y  u, ~set global-reputation-list []
) r3 h3 ^( F, n/ ~

- n; o0 R1 G, s$ m+ g/ R0 rset credibility-list n-values people [0.5]

- w! R# f! g, V: l) W: x- H0 w8 w) J7 m( f8 k+ a5 ]
set honest-service 0

, I5 [/ T+ h- v- G6 A/ u* q9 y7 t  X# S6 @
set unhonest-service 0
$ L2 ~, H" \5 N7 u7 }
2 t8 k. ?# n. F+ t: D' W+ @  |4 c
set oscillation 0

; h. Y  G0 ], U! A* m, f5 E5 L6 I: l% B1 ?  @! c' e" V- z
set rand-dynamic 0

6 X) A+ B. j9 R1 send+ [$ D( ]( B/ O+ X6 g% ?

! H6 f7 O* J, y- E( y; Sto setup-turtles % h, _% y# s5 c8 t% n
set shape "person"
" m- T/ @6 }$ Y" fsetxy random-xcor random-ycor
6 o% j4 c6 _/ `0 B6 iset trade-record-one []
$ }7 [# r5 ^; C6 f7 T

9 F$ D- X, R' a) O- R8 |& wset trade-record-all n-values people [(list (? + 1) 0 0)]
) o' ?( ~1 \* |# E! v

$ M2 W9 X+ A  l1 V9 u; h) Aset trade-record-current []
$ X/ {  v( q! K3 ?, b+ fset credibility-receive []
  T; u+ Z- V$ E! [set local-reputation 0.5
( l& k0 o7 c8 l: sset neighbor-total 0% e# ~4 t7 D" M. G! l& T
set trade-times-total 0; z# K4 j& }2 B0 C: H, S$ H; \
set trade-money-total 0  r7 q; _% F0 {5 l- `& c* O
set customer nobody0 t4 z% J7 X$ t7 ?" L) l
set credibility-all n-values people [creat-credibility]
3 ?2 y4 @% d( u' |5 z+ }set credibility n-values people [-1]! o( S9 o" u- U. y3 Q1 `0 _1 W
get-color, W0 C2 T/ G* |) u( ]9 x: e! c. K  ~

1 j7 A5 ^  ^6 e7 G$ [end
4 w0 S( P1 c, E4 P+ P* A2 z, O8 a5 P$ }& b7 \, A6 N
to-report creat-credibility
: ?" y. Q, S0 s. o: q! D5 ^$ x8 _report n-values people [0.5]
* g$ A/ ]( h. p0 F  Gend' d/ T6 ^5 m7 q/ ^

: B3 v; `* [4 |! cto setup-plots
' E7 F" }5 t# t' y9 k) W1 p
9 W, |. t$ F6 u+ t& U9 Cset xmax 30
7 P: c3 v* X/ C2 t( |$ Z
% b4 i7 {6 X& i1 a: |9 k8 a& m4 j# X* l
set ymax 1.0
. W& q' Q* A2 P4 E
. o* A4 F0 ?6 P+ ~$ x/ Z
clear-all-plots
: O! d2 e4 T; f+ J3 J

* T! m: ^3 L5 r0 p% T$ ~setup-plot1
( T, o/ I7 y6 u: I- T1 w

+ d% c; x0 G6 n% b, W" asetup-plot2

! S9 \) ~9 U$ i/ c0 q8 Q) a% r7 z/ q9 c7 L2 I0 \3 U5 `7 ^
setup-plot3

! @  O1 A0 w$ Z$ D! w0 O  i# ~end+ r5 {$ J/ P6 T+ @3 D

1 i: }7 k. R, Y/ \$ k/ G8 ?;;run time procedures
% v- f4 w* c! b2 b9 t- M  t5 W, g& Y! g( Q% C* O/ A: a
to go: B! H- t; E9 ~% r# P
. I; P; T2 z0 k$ ?
ask turtles [do-business]

! C6 o/ M. b  z. Q( Z& R/ p* X/ gend
# A0 T) o! X6 N7 `5 D3 C) F! m' W3 Z# N3 ]
to do-business
( s+ Q4 @4 k9 l

" {! O( z" g- n0 F  M' |0 j2 d
* C: U  Z4 b) O* |2 F) b5 `rt random 360
3 P$ e5 Q7 F& T% c4 z

4 m+ @  L: U7 q2 p% b. a" Xfd 1

: j' h2 @; ~: h+ a4 `( Y2 @& f
" [0 a* ^* y! N4 {7 ~% zifelse(other turtles-here != nobody)[
6 H" x) ?' J2 Y  l5 z

( b; u' Y% K4 `4 cset customer one-of other turtles-here

. ?( A1 H8 r* [4 f( b) |1 p: h/ I6 b8 ~" `8 a
;; set [customer] of customer myself
* z7 e8 s3 T& b0 D3 g4 Y$ K& ]

& _7 t. y% n3 Y+ Lset [trade-record-one] of self item (([who] of customer) - 1)) c" j( ~  c2 x2 {, o- z1 W
[trade-record-all]of self
' R5 `$ n& W- |$ f9 c% c* }" z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( |; D% G% A; D, q1 }6 m' K
" Y* c; q# V# a# M  ]" d, iset [trade-record-one] of customer item (([who] of self) - 1)
- {* x1 M- E0 r! Q; W[trade-record-all]of customer

% O1 t! D4 u$ M: ~- J1 N
& m( O7 G2 m; ~" v, u8 Fset [trade-record-one-len] of self length [trade-record-one] of self

5 V' P6 d* b( ^* k8 n& B8 J% n0 x& L$ V9 Y
set trade-record-current( list (timer) (random money-upper-limit))
5 B; Q9 |* @4 i; `

5 ~( H" T+ m1 Q' Q1 ^8 w' Qask self [do-trust]) p6 h5 e  N. e" \
;;
先求ij的信任度( U9 c, x  U* z; T

  F8 d6 j6 |/ I7 mif ([trust-ok] of self)# [) T) \/ _+ t$ ~
;;
根据ij的信任度来决定是否与j进行交易[
6 ]0 F. W# S) q# r5 s: T; Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
2 F2 W9 p/ I8 Y. e/ J5 G" }$ n/ A
# Y5 ~' v9 T$ R+ l  G0 D% K& z0 s[
  v9 N9 j' M' ?- X+ C' U  Y
( q$ {- l3 v8 X
do-trade
+ s/ Z+ ?( ]* x3 ^2 m

' W- m  |7 W* V* _" v4 S" cupdate-credibility-ijl
" M+ r% g1 @1 g! W

: m/ v& T# ?  g4 ~$ `$ m1 F# d! iupdate-credibility-list
7 `: `  q4 ^4 W/ z- I
% H% w' S6 y0 M% ^. H9 h
9 w" J6 l2 F+ b
update-global-reputation-list

! x# w( i9 G; f8 H$ B# R. ]- z$ b* X) h2 t- ]: C: o
poll-class

" F$ c4 m9 f7 y4 K& D3 l+ T& K
9 V5 X, M+ ~8 N7 d4 aget-color
/ ]$ m  t+ I% n
9 r4 d: g! r5 Q- k6 @! u
]], e0 S; g% y2 @' m
3 g- K& V( j1 q% |: K% c7 ]) E% Z
;;
如果所得的信任度满足条件,则进行交易7 M: ~0 D# l3 k. W! ~% I9 I' G

! w' {) M# H; M[

8 C9 s5 Y5 E' q. i* {& p) d- O( F$ W
rt random 360
! q. y. S8 A+ f0 Z3 c6 a/ ~0 i
" w) r; X5 ^5 `+ P9 x$ e9 I
fd 1

. {3 F! g7 S) Q' R! {# q# q
" `" r2 l3 F& \) g  V  f! k]
1 Y6 v" n9 p3 g
5 o  t" Y/ n. v9 K& ?% G/ A8 P( \4 R* t
end
& v* r: I& H# C3 q+ }. A

& i0 g2 y, d' n. ]; Eto do-trust
/ T) \) a8 S4 ]( e! gset trust-ok False
0 D- R" X! O% `1 S1 R0 n' U2 e' O$ s) s4 O% q4 e$ J

3 r3 p. _! U( v6 [let max-trade-times 0
' U0 T" g) D- zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ o: `9 R4 u: @9 C0 p4 @let max-trade-money 0# r- M& x" c# |5 @% ]/ n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) ]! {! d5 M1 V- f" ^% Slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  c$ r9 V5 ?* z8 k. D2 l

# y( z. x0 e" n

& w- v  t- [. M! [get-global-proportion
2 f6 n+ J, [  Alet trust-value
( j. D: e; b  d( t* j4 Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

; J" ?) ]! z: v7 W7 }+ Nif(trust-value > trade-trust-value)
/ e8 G# {5 `) U5 ?, i5 a$ h[set trust-ok true]8 [9 q( F' ?  e6 ^
end* j" [; M: c3 V6 Y. A

2 X6 Y; o0 M( C/ T: I, J1 y' b  lto get-global-proportion& G1 k5 L) ?6 U+ X6 B3 a
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 s& R# l: U" d, z/ K5 i[set global-proportion 0]9 Q5 i+ [0 {7 T8 d& q
[let i 0
( O! a3 s& H$ r: l+ n4 [let sum-money 0; ^% a( m9 `$ j7 y
while[ i < people]0 L# W+ }' u+ b1 s% j
[& t) n% n/ {3 t1 \- E/ ~0 W' _6 {
if( length (item i  b( \' T5 e* }, y9 U
[trade-record-all] of customer) > 3 )
  i, w3 h& n6 |# q% Q' m' w" g
[
) c$ E* P1 }6 }0 X* ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ w' Y0 B; j- c% i, |2 u]  H: ?! U1 s! ~! U& I/ M4 k' t
]
/ s2 T8 n4 u( ~3 hlet j 0$ L; l3 d4 H! F( N! Y- O( C
let note 0
) q6 P- t7 W- t7 E: k& Fwhile[ j < people]
- w/ L; E; F% }7 ?# |[4 `- Q4 Y, ?3 ?% {8 L. X0 k' A
if( length (item i! g8 f4 C1 ^+ ~2 `3 i$ D3 N! r
[trade-record-all] of customer) > 3 )

9 _% F' d2 z* q% Z[
8 {& U- s2 v4 e4 O" q3 {  jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 y- c  N. h0 i) o! W# s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. w/ P1 e: ^8 N' Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 I/ |( h! a2 \+ Q3 h
]
3 H; A1 @1 t$ a: r' F]1 Q( b6 _! U: j1 B
set global-proportion note% Z1 ]; Q+ J4 M! b+ T' z
]
2 e) r3 t/ T) L: ^4 M8 ]end) L* i" G8 G& R2 q& I* G8 E

. `* U) K8 |2 @8 wto do-trade
7 v2 M; A' y6 {# W6 B;;
这个过程实际上是给双方作出评价的过程
. C9 n! l6 Z6 X6 {& qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( Y2 J3 v: n/ V1 q7 z- Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 G/ D& C7 I( X! fset trade-record-current lput(timer) trade-record-current
& I! @- t7 |' }! B;;
评价时间8 I( |- e: Q5 b5 W0 K
ask myself [5 S$ [. Z+ a& E% y1 |
update-local-reputation
. m; a$ S$ w1 O0 l0 p' D8 ?8 Hset trade-record-current lput([local-reputation] of myself) trade-record-current
% Q8 Z# A2 _8 j* Q( {]) H, I. V8 e2 J+ {- Q
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- x- b: X: h5 \( n;;
将此次交易的记录加入到trade-record-one- D! z; t, `- L, N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). m% I" A- C( _% c
let note (item 2 trade-record-current )$ C& i/ o0 Y9 |; H/ X
set trade-record-current* ~0 `3 u0 U. o0 E% L
(replace-item 2 trade-record-current (item 3 trade-record-current))
% B2 y( Q4 y+ L- m/ _) j: a( m
set trade-record-current9 N' }; @- V! `* I7 ~
(replace-item 3 trade-record-current note), `" J# k. }9 H4 L

4 R1 Q; U0 T' p

' i8 C& }5 n1 x- r; `, M- ~6 vask customer [& o, @+ ^/ Z; r, `
update-local-reputation! C; ~$ e* Y, Z
set trade-record-current
8 D, E# S( {* R3 p(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

8 o4 J# e* I8 d: ?$ q! w& ?( r- w]; q* B9 G; Q' c; F$ k
7 w8 \/ p+ i: G! \6 ^% d! W! S
1 I/ y  n8 |8 ?( m  j& r3 c8 n
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; q4 I. c( s/ D6 G

4 L" O- Q7 Q8 w+ x+ Yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) Z; v" j( K. S4 x* y
;;
将此次交易的记录加入到customertrade-record-all
9 o; V; @( K$ J8 I! H7 U$ w( rend
2 F  {/ G/ _& L! B3 d  A9 {
" L% p5 v/ k+ B# U7 Rto update-local-reputation2 I  ~: A0 a; x! r* a
set [trade-record-one-len] of myself length [trade-record-one] of myself
& u! v3 O/ f: n- N$ M& ]* T" D1 V, f* W8 s$ |6 \6 Y
2 b4 _! d+ T$ g
;;if [trade-record-one-len] of myself > 3

1 {" s; d+ x- l1 }update-neighbor-total8 T1 ~1 T2 h0 x, q2 \; K/ i
;;
更新邻居节点的数目,在此进行" }: ^( A9 f1 `4 i
let i 3
  d; {: n; h/ x6 V3 T; U5 K8 _let sum-time 0. r. u$ f! R, a$ J
while[i < [trade-record-one-len] of myself]
- {* m- h7 D$ g[7 W- o+ r7 T; [- `/ h) V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 \# z5 {/ y4 @: f; a
set i# @. n$ w4 [  y5 R- k9 d# G
( i + 1)

4 `( ~, M9 p% x; |]
8 s: A& Z: L, Qlet j 3) S: _  t. o& j$ s: p, ~7 ^+ E/ Y
let sum-money 08 ^. |$ }/ Q! O7 r$ q) q% A7 @
while[j < [trade-record-one-len] of myself]6 V" @5 F: o& H- g: w
[( b" ]* e1 e  m- a, G
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)
( L3 X5 q7 n+ Y8 v" n  l$ I. v$ z/ W* \. ?set j
" f$ E1 l4 A4 F* R3 ~( j + 1)
: i4 l8 d, C: j- h
]
8 l" i5 g* w' o: mlet k 33 {' ?& w- ]2 S
let power 0
3 ~3 d. a" f- Xlet local 0: Q0 P1 Q. d; o2 p3 a
while [k <[trade-record-one-len] of myself]' g# J0 L/ {* |! K5 j! E2 [
[
6 w1 m1 a. d9 }, K9 d- K" xset 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)
2 J, }8 m( L* [. f% E' c. N( Uset k (k + 1)
7 B* Z; w8 {- M: q4 []# ^! z, D3 v$ I; E3 w% g* ~' Z
set [local-reputation] of myself (local)
, {2 j  ]4 x3 n/ o8 s. zend9 Z! B- [! V$ ]. r

# o, H( V$ l1 x  U; s1 Z8 Gto update-neighbor-total
0 V+ H& d( I4 j& w7 J
) z. t- D' u' L+ e8 Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 ]# u# e' ]/ {/ ~. Y
: b" I8 v* n% j3 v9 w" |; K

2 l; e9 F! g+ A( e" v: p$ Fend
  f! m7 T6 p  O5 g5 N3 t5 D$ y4 v& x2 O! g( _8 M# O1 j
to update-credibility-ijl
) {7 v* ?6 ]( J- w2 g8 M  L9 I$ o  Y5 S. d
;;
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。
' W' n2 t  j' {9 Z) O+ h% clet l 0
/ N( A+ p, @. Gwhile[ l < people ]
- o8 f$ d3 p  g, f1 I* n;;
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
4 q) b: B$ Q( s8 \1 v" I- m[
1 I) l( a; Y1 h2 R" C& Wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ m' w! ]0 C' _% @# ?( s- G1 j
if (trade-record-one-j-l-len > 3)
. R7 a2 E. Z8 z[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
; ^: R! L3 X' g* W- S; Blet i 3# a$ z/ e+ Q8 n( _2 U( q* @1 O
let sum-time 0
' B5 B/ i6 I0 J( ]3 Q6 |! Q1 I! @while[i < trade-record-one-len]
" U" k) X5 e% h, p7 @9 P% r) t[( Y' p# \+ E. B$ A, k: V4 b, {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ c8 m7 R4 d3 u8 {2 c# B. Q7 C
set i
( d% C1 q; ^  {( i + 1)
% _  E8 Y1 ]( x8 s4 E0 |8 |
]* U9 c) x# v$ H! P" [0 I, S
let credibility-i-j-l 0
: Z, i8 Z; Z. I7 l. w4 X;;i
评价(jjl的评价)
1 E$ j* B, p  X! u7 C" z) ylet j 3
9 |( w7 @& _/ Jlet k 4
7 L1 H' U9 w9 |5 kwhile[j < trade-record-one-len], g: J" G' C% u( F
[
/ {+ |. M/ o; Y# Wwhile [((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
/ x/ m- Q9 W1 H1 z: j( x6 gset 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)& q9 ~3 i- E) H& c+ x, q
set j
, q1 g% a6 }) b* n1 h" ?/ B- g5 s  [( j + 1)
+ j0 t& v$ P! `7 O$ q( o9 L
]% Q; L+ V2 w; e9 n3 `6 P
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 ))/ ]# z. E3 @& r; S& i; I3 y- A6 e
  a% q+ z5 u2 x+ L' U

# e. k/ U* s& l+ V5 Zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 c  Z; P/ d6 j6 D3 K' j9 @, l
;;
及时更新il的评价质量的评价
6 u% V! p; t  |) Y8 _( m6 A# Q+ \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. K  O: L" k! z: c  ?( x8 ?1 F& Sset l (l + 1)
) }5 m" v. z# u]: e8 U. s: P' s+ E: C2 K
end
: |" z2 u* u. |, C- q2 H) `" M& A- G
to update-credibility-list2 A$ y; {& z$ K. |+ R8 ?
let i 0/ A3 j6 M# p: h/ W4 }! a/ _5 T' f
while[i < people]
3 l6 Z7 ~( m' m) T2 ^* X2 q2 s[" W+ s) z6 s$ K' L' k$ N7 v
let j 0
. [7 S8 o+ i3 G) b2 x" Jlet note 0
* r6 A/ K2 r3 ^3 B" r! N/ p; ~let k 0
# O: s: t3 E2 Y1 p" S  V;;
计作出过评价的邻居节点的数目
0 o% D) t! m4 d# Y( I5 Fwhile[j < people]
6 w  x& w' J' `4 `+ X! |# k6 u[
6 n$ i& J0 _2 q# bif (item j( [credibility] of turtle (i + 1)) != -1)
$ h; [3 `% Z( v' q( N3 B;;
判断是否给本turtle的评价质量做出过评价的节点; p$ b- X) c: @
[set note (note + item j ([credibility]of turtle (i + 1)))
. E  L3 ]/ {9 u2 i  T8 w;;*(exp (-(people - 2)))/(people - 2))]

8 k" D, T( |* e1 J. ]) aset k (k + 1)
2 ~* H( p& b4 C* h2 ?- U" v% X]
! j+ G, I* H$ h4 Oset j (j + 1)
; V/ ?2 i, z8 A) G" E: n$ N]
. I" j6 {3 y/ f9 f" X" R: |set note (note *(exp (- (1 / k)))/ k)) V& w0 E9 V9 T+ G1 U/ x
set credibility-list (replace-item i credibility-list note)% S1 B4 P4 t1 o0 h& K
set i (i + 1)
  c6 \; j5 s2 y- z! W9 v]4 U% f7 w9 n/ B) Y0 S' X  W% {
end
$ k0 l8 V- h: R6 E3 q0 y# E: S% H8 D' G: A
to update-global-reputation-list
4 X- K3 \" S+ K$ J/ w/ }9 k5 clet j 0  V9 z! _8 ~+ O7 r- m2 y
while[j < people]
& f5 [9 L7 ^; z( D- n3 O/ [[" b; r0 F  Q1 O3 l+ y% O3 M/ A. P
let new 00 U/ P$ U0 |6 X4 S
;;
暂存新的一个全局声誉0 }2 q$ `! A+ B: g! c' J: H8 z
let i 0: k* U" i- B, g, D
let sum-money 0
# H" R# P7 `3 R! Zlet credibility-money 0
& R. ~5 c) w( E' xwhile [i < people]! C1 f: K( m8 \( m
[* M  A/ e( |2 z! S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% ~; R; h% F7 ~0 ?+ U7 ]. d& Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ Y- {9 k! ~: Xset i (i + 1)1 }6 O& N! f/ ~+ ^
]0 |+ Y& i3 x* i6 y( Y' y0 ^' j
let k 0$ b/ s' N4 v- @  O  v' \
let new1 0
' }$ D0 g5 T8 c: A6 K6 _2 P& kwhile [k < people]( F$ G3 M, `9 D3 G) ^
[& j5 T4 z2 K! I- Y
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)3 L* ^+ Y  z) ]
set k (k + 1)7 V4 Q8 f/ V" Y0 Y$ x5 |
]
- c9 P7 A" Z2 ?& hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- V7 o" c* j8 w# Qset global-reputation-list (replace-item j global-reputation-list new)+ N1 X1 j% j8 e1 T0 o% z
set j (j + 1)
: W5 Y2 b+ P5 e8 u. }$ s]
; ~' f% i  B2 j; E5 ?end
9 l9 m/ X( L: S9 [9 E2 p. a% A9 D; @. D. N4 u3 Y
3 s$ w0 S6 k* l7 q

# [8 k8 R4 [7 ?8 ?* \. w+ w5 B3 M4 xto get-color0 J% G8 {! J. N% [! L" m

0 |% b" J$ t9 G) V& V2 xset color blue
4 M+ D  D8 ^$ O  M* v; g1 \, X" [
end
  Q  T. F+ L4 `$ W( e
) `' W* U" C' k) p9 d- I* i: b6 @; Zto poll-class% r: k- H  Z, X/ x$ V" {: r2 r* N; E
end/ k$ Z7 L/ E  ^& X" Q$ V

7 j" u- f; x: R" V4 Nto setup-plot1
+ Z7 v5 y9 q8 j  c, q& h% R& R3 d5 l& [7 I
set-current-plot "Trends-of-Local-reputation"

0 E! E0 Q( [; }- W# C$ R4 u3 }% V# ~
set-plot-x-range 0 xmax
  I3 T9 V- x' x! X, |& O0 U; @5 w$ Y" ^
1 n/ o: U- ^) P) b# X7 v; e9 Z
set-plot-y-range 0.0 ymax
+ q* S. o) l/ Q/ ?$ u9 J
end
' x, I, B8 D; y
7 h: p" s3 }; [% [+ Ito setup-plot2
4 L8 t1 O+ p, u6 H* U' m9 X; U- u5 o0 D7 q, |+ d, s
set-current-plot "Trends-of-global-reputation"
+ Q  [; X8 t( t# B
& k" a) V$ _, \; o
set-plot-x-range 0 xmax
' s# U5 S( T  x6 X* t
1 v& M* i7 `: i, Z3 ]
set-plot-y-range 0.0 ymax

& W/ |5 s: r# f/ c! ^% Iend
& ?; s, d/ B. g: D/ n/ [
2 G" B, `3 L/ H" p8 P8 z5 y7 q5 L6 o0 tto setup-plot3
2 @/ q6 A: N' K1 H3 R6 t) i% j
  Z$ N. ^" X5 t2 }* g. R1 `set-current-plot "Trends-of-credibility"
0 M# d& r% n  t$ D$ R) T
' a/ W& m  ^) j' d
set-plot-x-range 0 xmax
+ u, o; A$ V& o2 c
6 U" W' s( o' u7 Q1 V
set-plot-y-range 0.0 ymax

( C7 o! F" l+ ]3 F' }+ B: |1 Yend
  H' t! [3 b% K
" M; k. c1 R7 N0 r0 }7 qto do-plots, e4 S; X8 `# }, x6 G
set-current-plot "Trends-of-Local-reputation"
, [; s0 ^0 Y8 i$ J: D. M4 Oset-current-plot-pen "Honest service") q0 @1 \# Y- B+ ]& s
end7 X7 O8 D# C( Q- r
8 w1 @, ^! V1 l$ j* h/ a
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.0 `/ i( V% l  F. L# t6 b
! N  @7 p6 R1 n3 k
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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