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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:. Q; L4 ?' }0 L! E6 r
to do-business / b. @0 f. h3 W' }" U+ @* q% k
rt random 360( |. ~2 C8 l4 j$ ?4 i, n4 S# o0 `- {: b
fd 1
% f& t& x1 |3 @+ [* f0 z9 z ifelse(other turtles-here != nobody)[
' F. s2 F4 K% ~$ k1 r& ^   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.* o0 W4 E$ f6 q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 B; A4 U/ ~' l4 o( e   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 m# U1 |9 p% L* R9 N   set [trade-record-one-len] of self length [trade-record-one] of self
' N( B, ?/ ~3 y   set trade-record-current( list (timer) (random money-upper-limit))
- c) h( c# a0 l# g1 p) |6 P$ P' t* y, ]- W
问题的提示如下:
, P6 N' k5 `$ L9 K2 r2 m( C; B1 s. y" L
3 q+ s/ M9 H3 \& ^% ^5 R9 _error while turtle 50 running OF in procedure DO-BUSINESS/ ?8 U, u# c6 d: M6 J3 d
  called by procedure GO$ _- a* S: v0 _7 }* q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  }. \! @' x. K4 k1 a
(halted running of go)6 ]3 p. v9 U" s. c3 w5 |
: u, f. a+ v6 y3 Z- x. t4 Y1 l/ c9 l
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~~
/ p8 G7 B! @$ i$ d) u* m另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
! D! j+ d' {5 Kglobals[* U  X2 F9 s7 k. Y$ e4 n( E: Q
xmax) [6 t1 s% \+ c: l0 g
ymax% B% s* {- G( A# _
global-reputation-list  }: Y! |6 V" ^/ E; a+ G

3 v+ Z$ t+ [* {' u;;
每一个turtle的全局声誉都存在此LIST% a& s8 T' U( n  T; r# F$ d
credibility-list/ A0 {8 n2 p* ~9 G, @7 C& {
;;
每一个turtle的评价可信度
; N6 [: Y) L; I' v* A% \8 |$ i. yhonest-service
) ?6 w8 k) r( v; {+ f9 A( sunhonest-service
% }+ s, N! Q" `oscillation. Q/ c8 i* F, n$ g6 J! a1 m
rand-dynamic0 P: y4 a6 U! M' v, T
]
6 ]# s: N' M+ d
3 |+ [# d6 j1 Y) h3 C4 Eturtles-own[
; I; _* x* C7 \  S3 Vtrade-record-all
/ v0 m* ]- Q, B% q6 i5 g;;a list of lists,
trade-record-one组成
! w) t6 D9 L2 ?6 G5 d1 F4 etrade-record-one
1 Q, \; m: }+ G5 _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) n8 T; R( j0 R; p2 H

( |7 |/ y& G1 a8 x, z;;[
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]]& L% [; a* ^- x( x- ]% B7 r
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]3 ^; J7 t8 b8 W/ V
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 d9 t+ T+ L- w2 R/ N8 kneighbor-total
/ z  B9 M) e5 f! `4 n;;
记录该turtle的邻居节点的数目2 K5 g# T6 D% I# a3 P1 z5 {0 o, p
trade-time9 s, v/ Q2 T% E  ?3 |* [
;;
当前发生交易的turtle的交易时间/ f! S4 B3 }& z  F% \+ T
appraise-give
5 ^* l+ [& ]* t  N;;
当前发生交易时给出的评价5 b& ~" ]# \8 M7 u  y
appraise-receive
+ l/ F7 R/ O* W. n;;
当前发生交易时收到的评价
& Y9 U1 y: u2 vappraise-time" u6 |1 |% B, D8 U, ^7 O
;;
当前发生交易时的评价时间
% f4 j; s% L5 b  X+ d7 f+ mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 o' W: k8 H0 ^' w' F4 P0 q  [trade-times-total
8 N& s# S" v# N; N, G;;
与当前turtle的交易总次数% j0 Q3 J. e$ s* F, A1 P
trade-money-total
/ n- z: I% ]3 w- J7 c, ~;;
与当前turtle的交易总金额* n, ~* y0 ^; I6 A
local-reputation
( [. v( l# i9 q+ I% x: V1 w1 lglobal-reputation! Q# H8 W! h& O$ a& p
credibility1 @, t# F2 ]" s9 ^
;;
评价可信度,每次交易后都需要更新
' K! [  C" x6 lcredibility-all
5 J; C3 U. K9 M;;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
9 y+ |' K# w; z, o9 n1 v& F+ Z
2 A' N4 _; ]& L% _;;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 W+ t$ q# S5 Q0 W1 u; Q+ e" gcredibility-one/ z# \9 r. Q) Z+ k- X
;;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+ m" Q6 ]1 X, Q4 U! y
global-proportion, X6 y! k7 [  |, M' V* w' X2 i, M( w
customer
- \+ ~- \; Q, N* M: {customer-no1 W' G& P: z6 K
trust-ok
; t7 m0 H$ V# w  X; Btrade-record-one-len;;trade-record-one的长度
* m& K8 U" l# X6 K6 y' i3 ]]7 N3 d, Q9 i9 b9 F+ S

' f$ ~, n# p& u. ?1 T% Z8 ^  B;;setup procedure
" k/ n) |# z( z! ^! x+ D9 ], U
' ~! l4 A7 ?+ C3 n; Z3 cto setup
" m' X1 o( O* o3 ~; u1 h/ B5 l! v5 d! d0 ]0 I6 q
ca
" y& X8 S* Z- f2 E! O

9 ]8 Y3 g9 \) ~6 F7 dinitialize-settings
7 s* A$ {7 P, P9 t7 r0 C/ D

* c1 e: p4 X  j0 s8 j4 jcrt people [setup-turtles]
7 v" g: h5 x! h0 W9 }7 u

9 d4 ^# U! X3 c! Dreset-timer
5 {1 `0 X- ]5 \6 {/ D0 \9 \
0 d  s9 u7 H' o0 f' w5 q+ ~
poll-class

: B! ^" z1 R* N
, K* e6 I' k' xsetup-plots
. n& V# }. T5 K+ U- k7 X
7 [$ _" Q% y1 c% B2 S. f
do-plots

; n5 S& ]/ P' l! d  ?end/ `" ~( M7 k9 ]/ u+ L3 l6 V2 [

; E( H2 v: \" M+ P8 |2 jto initialize-settings6 u; u3 Y5 J1 m2 v! e6 A7 C" \

( v; y# B$ I! R1 L4 I' ]set global-reputation-list []

% ]5 {/ x9 P, t" q9 J, c( L
8 }9 v& r' [$ {! O4 O! l  `5 g1 `: _: xset credibility-list n-values people [0.5]

5 G# ?" B& h- W
3 Q, H( [/ C- h- G3 R& F, jset honest-service 0
; M9 e; U; O8 P" n4 @, x

  ^: b( m0 m3 X1 t: T. yset unhonest-service 0
5 X- p. k+ n/ T

- T) \$ V6 f+ Wset oscillation 0
* m/ |$ K) i1 f

9 i/ @& r( y- b7 g3 Y7 D9 ]set rand-dynamic 0

. ?+ ~2 }4 E$ M( }- Z9 Q1 rend
; P' p& j9 `, [6 S, B3 w* ~9 T' l4 \
to setup-turtles 6 [" k' T9 e  K7 c5 {' }1 @; |
set shape "person"- H8 X6 t3 A0 ~  T1 m6 r
setxy random-xcor random-ycor
8 k& i: T: R& jset trade-record-one []
8 ^: o7 R3 A, f; X$ y
* y1 J' k7 E; Y( z0 L: _
set trade-record-all n-values people [(list (? + 1) 0 0)]   ?; B! t# t  L' S% V0 A( O/ A

& a$ J& I' V$ K: }9 z- P3 Aset trade-record-current []+ ?! ^& t, e: D1 L) f* D
set credibility-receive []
+ ?+ O% g( M4 \; Y: Y* qset local-reputation 0.5- Q# H* }; d9 b! k
set neighbor-total 0  H7 c- Q6 T5 U
set trade-times-total 0
% j4 x/ ]% ]/ @( xset trade-money-total 0+ w5 g5 }7 m. t( s6 b
set customer nobody
$ [$ M. F, s; @9 M. Pset credibility-all n-values people [creat-credibility]; i" b' Q+ k9 Z1 c5 _9 C) q6 O
set credibility n-values people [-1]# C2 t& g5 h3 g" D' `" T/ x. H
get-color5 t3 A& N% |- K

1 ~! h: N. w; {+ A; K+ [" o' Z0 w. fend
+ W0 f! Q; W! V4 ?" i% K) y6 [/ p0 l& C0 G5 l! e! r( U
to-report creat-credibility
  a: d9 O$ z. r- O9 Z$ y9 r8 dreport n-values people [0.5]+ F1 p$ i5 v( g# n
end# n$ j, e' ]  C; W- H* s' b: p
' W- ]& j  }1 B0 }, }
to setup-plots
7 b- b+ F% V4 i0 n3 d
, W% Z' b- }$ Y- h1 k( ^set xmax 30

( w0 L. [8 w3 ^: T# U) n: X  Z$ _+ K/ f" ^& ]" `
set ymax 1.0
6 s! p/ N; j" w2 M2 @" c1 h
! A* v8 v' X9 e
clear-all-plots

& v9 E, j! k0 X3 \
; r: \5 j$ V! A2 }setup-plot1

( G+ G) E9 t9 o8 i4 \1 q& o3 K/ [3 Z' _
setup-plot2

* B9 e- L; c" b3 ~' {4 [3 J" I2 E# Z; S
setup-plot3

( D- x) S* M; r' d9 R7 r. lend7 E0 }: t8 g3 z4 g( h

! l4 f2 e+ p# i" @, @;;run time procedures
- p  Q3 y: C: I- O7 j' I
" }) f9 @  `- z5 {; R  E7 q4 k1 O$ Eto go, S% d1 f4 {$ C1 y& P# P
  d5 B5 F' }& u0 v8 z9 N. H
ask turtles [do-business]

; p& e  W8 [$ C* ]" C0 A8 V3 Uend1 p! k* l5 n7 C
) V# k3 N* |- b" N2 q  U
to do-business 1 K( o& j* G8 R( p" N, {8 N

; w" t. G2 `, b' @# L
$ w8 @+ ^" o/ x4 G0 J: W+ H4 Zrt random 360
2 D8 ]1 G. @( U& t0 W9 e
$ f' D: C& f1 n% |$ O% ?
fd 1
, r/ {/ l' Z# N* z
( ]; Y8 x9 q9 b4 @: A& Y
ifelse(other turtles-here != nobody)[
+ F7 _0 E: w4 w. ]

: I) q% C( Q3 l; Dset customer one-of other turtles-here
" j! g% t+ O+ c9 M( x# X

8 r" O; C+ e. @/ j;; set [customer] of customer myself
4 d, g# [8 p; h2 v' `8 J
% s) I" p  l# N1 _
set [trade-record-one] of self item (([who] of customer) - 1)
) H. k8 y/ f& j2 G% s9 a[trade-record-all]of self8 P% a4 j8 r/ b0 k
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- r) O. T2 E, V6 b- {
5 G  F$ `! i! O1 C2 a" u
set [trade-record-one] of customer item (([who] of self) - 1)" D% Y: t. x- D0 K
[trade-record-all]of customer
. T$ y) D  ]: b' \3 G8 Q

& c) T) K8 Z2 O; P7 s& xset [trade-record-one-len] of self length [trade-record-one] of self
6 @( e+ r2 U' [" p
/ w8 q. j4 Y) j
set trade-record-current( list (timer) (random money-upper-limit))
5 J' T0 l- J3 f& _; B/ p6 H* _$ v

. n. a+ U1 K; v: p# W" i" b9 l1 kask self [do-trust]
' i. P6 _" e# A6 p3 H  s;;
先求ij的信任度
( B; n$ S  I# k2 W% ]
% t/ p; E2 c7 x3 `& U/ v1 |3 h8 \if ([trust-ok] of self)
  `# b% U& o! L+ o8 t8 n- C;;
根据ij的信任度来决定是否与j进行交易[
. h# Z8 E' \% g8 ?3 dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  }& a- S8 v- A/ v* b' Z
' j( [& f4 [0 x+ i8 n[
3 Q& p2 l+ }, e
% {( ~* X3 F2 g
do-trade
$ f; r0 G/ }) M6 c# [8 s

0 e9 Q* M7 l/ u$ \) `update-credibility-ijl

2 x4 Z$ x4 E6 h# x# q
9 z" o5 B6 {$ }' B( Iupdate-credibility-list6 v2 _, j% W+ O1 D1 J* h

( R& f+ V9 ~, m9 G7 W" Z4 i8 |  o5 B3 E& i/ @
update-global-reputation-list
" {7 t5 {3 U* R$ ~# {/ p0 }) b
$ \2 Q# c8 M! v* u
poll-class
% V6 {* X. D1 Q( E# R/ G5 y

* @# I1 s/ Q! O8 i1 K! @9 x  |6 ?: Mget-color

7 r2 r( }) _) s6 l- u4 @- {; \' ?+ O1 y; A
]]$ r# f& m* [& W5 F

7 I1 @9 D. g$ f; L( D) D;;
如果所得的信任度满足条件,则进行交易) |, s+ l4 t* q3 X8 y" w- G

8 }! o7 p1 v/ v0 {[

: {" \3 l) \) f' _( l, h# G0 [" x: J; y
rt random 360
4 V: C; @% Z- D8 E8 e8 l: b
! i3 p3 U/ d; F
fd 1
- v6 \7 |! L; [2 W# o
' @1 h+ G, F; N+ ~% {; ]' M
]

+ B6 b* ?, U. `
9 j0 F( ]" o! C3 ?. g9 I' nend

1 A* j, U" D: h, J" d/ H4 E5 G4 p- x; k) Q6 D" _$ u( e
to do-trust
- Z- `0 l) U1 b- @& x" Z9 X' cset trust-ok False
& J* T) o* V, K7 U  |' k0 n" D' W1 r2 ?6 Q0 w# K) j5 D) }+ l3 m  R3 ~9 W/ v

. ]. m1 h* o* nlet max-trade-times 04 F0 m/ _; p6 ^! Z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" `3 P: j( o* X0 \" Y8 \
let max-trade-money 0. H9 E( S2 B2 K2 [& Q/ e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' f9 r( Q; H6 w' Y! Ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 w; c- @7 e/ x" a4 t: J, D
- M" C- P) c" r* a6 o/ [9 S

: V5 N0 x  d! [get-global-proportion
9 e5 C- c( N' R( A( ^  E5 plet trust-value$ ~" t; S8 E0 V: D# l0 G  m
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)

/ Z0 c+ ^  T. L2 S( Kif(trust-value > trade-trust-value)
, h3 K$ s+ R2 X( G$ ]0 N[set trust-ok true]9 b$ x- Q) v5 L( R7 y
end
; ^4 r; F  a7 j' m, V1 W' F- [7 Y: L7 F" O: ?2 T# ^$ n
to get-global-proportion
8 I' W* g2 p( Q- \. {, Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 |; W/ R2 M. R[set global-proportion 0]0 y: m/ I5 ~8 A8 p
[let i 0! s  z/ C+ `* W
let sum-money 0% e' _9 Y! n/ A3 X7 E# y. h& N
while[ i < people]
2 L! t" [9 p; R3 g[! ^$ v4 j  F. S6 c& L2 r" r0 B
if( length (item i
$ L* U/ Z& z) r/ V# D( q[trade-record-all] of customer) > 3 )

# K; m: t! ]  y! q[2 ?0 ~% d  N9 c2 T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" g0 C" y; ?: D; G]
# `. G6 {; {5 m! Y]
, P: `9 s7 B/ Vlet j 0
: C( q. i9 A3 V8 d* Vlet note 0
- Z0 b/ a  v% E4 T: l- x' swhile[ j < people]
0 r4 t: M5 C; n* b% C9 V3 V: U[
+ Q6 w: l) G. E- m* s- p: U8 Pif( length (item i
6 {$ \) d# n- p/ p* u[trade-record-all] of customer) > 3 )
; V+ E* W4 c6 h' ]- B6 A
[
8 P% o- s1 S  Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! N8 Q% f& P0 h# p9 v0 Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 U3 k; \5 Z2 {5 o  w0 x/ J6 }* g/ {[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) ^  y" ]. t; o6 \]* \9 w9 Z. Q' t( W4 D
]9 E% P9 [" g& r, }+ `" x  t. n
set global-proportion note
: a* @( I3 l2 j]
! R$ T9 g7 x" G5 U/ jend& z( q3 e5 F2 ]5 L: g

8 v: F& m, c/ p0 K' _" g. A5 tto do-trade: {9 \/ V8 _/ I" h) p. K4 }: F
;;
这个过程实际上是给双方作出评价的过程
. g" d; _4 ~; Y" S% H9 Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( s: e  @  h% X9 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. L$ ^9 p. t, D  q) D# q* Oset trade-record-current lput(timer) trade-record-current
( k# ^. R$ k4 r' b;;
评价时间# m% j; B1 {" a5 R; X2 b3 C
ask myself [: B, _- W9 F0 }
update-local-reputation
+ Q' S" [4 Y6 zset trade-record-current lput([local-reputation] of myself) trade-record-current' }5 U, V- U; M5 k4 z+ c% }
]
1 D9 p0 S' c+ P4 ^3 ~' yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* p6 D- R8 A5 `& C% R;;
将此次交易的记录加入到trade-record-one2 Z0 r# x  ~5 H2 m3 K7 R
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 K5 R* C% W, @3 ?9 Nlet note (item 2 trade-record-current ). c8 K1 h1 j  w! T1 x; v. X6 y
set trade-record-current6 S0 X' f  j3 l) ]; g
(replace-item 2 trade-record-current (item 3 trade-record-current))

5 b5 M. \& G. b  Z/ V9 ^set trade-record-current
9 u& q7 e2 I7 G' a( C/ c) o(replace-item 3 trade-record-current note)
$ o3 r" g0 N. U5 q
% b* g# h( w( G% {* i7 O
/ M+ x5 `9 j" V! Q5 S1 H' F
ask customer [
& u  x% j7 K  o  r4 E( x) a9 Yupdate-local-reputation& z' v4 g$ ?/ h1 e4 O% z$ z. h# Q
set trade-record-current  `4 A( I' d1 w
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- A1 ^0 J- @& D8 j, @]5 L: J7 s7 s' d7 Y
! V1 J7 Q7 f1 Z$ u

0 R! t3 ^# p9 z& y  jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 V8 {9 Y+ ~! L! s, W" @$ m
" g) l% x: H" d2 y0 q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( S' @* \, D( ~8 u' B9 {( \5 }
;;
将此次交易的记录加入到customertrade-record-all: W! @3 u  |/ E& y1 ?, w- ?
end8 c. h: c$ k; g

2 ?. r+ X+ P' Fto update-local-reputation
* n$ ^3 e, j- K8 V0 B" l7 f, Qset [trade-record-one-len] of myself length [trade-record-one] of myself0 D8 a- O' z) Z8 B
" g' o( O6 Q, K5 d
- y! |$ [2 \/ o* p: G! R( Q. U
;;if [trade-record-one-len] of myself > 3
, J3 @; |- k! i% W7 u5 ?! [* x
update-neighbor-total
) h$ p, d, y  t;;
更新邻居节点的数目,在此进行- f, o% D7 l' j; x) P* E: l
let i 3& ?- P( W1 Z; _2 ?" g
let sum-time 0
! g+ J! P- u8 U, l1 {+ w7 `while[i < [trade-record-one-len] of myself]
) R/ N& n8 q  L4 i6 o' y6 \9 E[1 j- K( `( i5 j' ]8 \# w' i/ e6 L
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 X+ X* x" m# f  o8 F" T5 R4 zset i
4 f! X- ?3 J! q8 F, _& q! v* l( i + 1)
6 e1 e  n9 }4 [4 J- G9 I
]
4 e. r% c) K1 v$ }: Vlet j 3# e7 x/ ?4 y  ]" R/ G3 |
let sum-money 0
* z- J8 n4 g1 u6 T; uwhile[j < [trade-record-one-len] of myself]
% X$ v: c+ Q) |$ g[; J! R; S1 u3 m8 P, C" Z3 J( u* e
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 Z6 ?7 Z* W2 Y/ n5 r
set j# z( `: z% Z' i9 k$ l
( j + 1)

; E4 z* j3 k: n  X+ L6 }' f% o2 w]6 |9 Q4 s6 M* d$ B
let k 32 `; D5 E7 r, l' s5 W6 C5 D+ F
let power 0
8 k7 [: F( @: B8 olet local 0
: ?* W! B0 G5 D* mwhile [k <[trade-record-one-len] of myself]4 @+ j, K: T8 h
[  E& s6 t) ^9 i8 h) b: x  I$ `
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) 6 `" d9 ]  t9 [- B2 [
set k (k + 1), f% r1 H! J3 d3 ^1 a
]
' @/ p! q/ a2 X, L! G3 |; E# [set [local-reputation] of myself (local)
  `  J1 x0 A& k3 R( c; d4 bend5 C1 W8 z, V7 d

. g4 O* j6 Z& _7 t/ h$ h6 [to update-neighbor-total
& ^/ b: t7 R7 ^5 y  ~( F- T. |' k% H. L, H! _
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* Q; z2 Y' I& p( m6 G( @+ `

5 P4 m; e7 H5 G! p

0 m$ [$ B, M& W( x  I* S3 p$ _7 @, pend
- [9 w9 v& ~9 I- r& y: ^% L9 N: [2 `4 B0 v1 Y8 i
to update-credibility-ijl
% H- q  s9 I( f5 h3 L; ^  k
- |& i( H4 T. H9 s3 w& Q/ b;;
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。$ F+ x5 c5 X4 i8 a7 a0 p! n
let l 0
* ^/ w6 y+ S/ f- @/ |2 v1 Twhile[ l < people ]: `2 g6 D: L" P
;;
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
  ^% h- Z* x$ Z- K: i7 ^+ W9 K[
1 V0 I: S* L( G; p1 elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ l7 q  F8 U" W7 A6 v+ h) rif (trade-record-one-j-l-len > 3)6 e7 V; U# v  P& N; 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" f' S/ g, `3 d& }6 X1 _
let i 3: g5 F' s3 b! K& e8 `
let sum-time 0: n: T' e, |! D4 @
while[i < trade-record-one-len]/ y) |, `( {( w  _' P+ U
[
, D0 i& ?4 M/ h5 x# o7 pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" E- L. R; p) L; q
set i
; ?$ }/ X& y! S0 N; M4 `( M, v( i + 1)
" Q! J: C1 \. I: E+ @) C9 A4 ?0 y
]
) [2 h% w; `9 V; i$ J, T' Ylet credibility-i-j-l 0* B' V. J( n) n$ `+ i* G' X
;;i
评价(jjl的评价)
- {$ x% i  K  e: b' ]let j 3
2 J, O( F7 T7 Z! ~3 y9 q5 T- zlet k 46 s# ~+ n* `2 M, D' G0 o& Z
while[j < trade-record-one-len]
% U/ a5 e/ _4 l9 @7 f/ m0 @( F# e[
# ^7 e, j; j6 Q- I4 H6 q2 h5 xwhile [((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
$ u$ o5 }7 `. qset 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)9 m- d5 r  H) \3 P
set j
9 W7 Y1 `( i# k& }+ T( j + 1)

& B2 t+ n+ R/ a1 f5 H]% @% J( @$ U& h$ C
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 ))
1 u& O- R% ~' [; A  K
' _7 _& j6 ^, |! e

  o) K* Z9 y  n+ qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 Z9 p3 J: |- T& l. j. ]% |; w;;
及时更新il的评价质量的评价
7 H4 M# k7 w7 D# O4 x- hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ H6 ^% d5 K# Z( K# z: W7 Fset l (l + 1)
+ b  _& v  |5 s4 B3 l]
2 [" s. r% U0 v1 m1 u- A! Vend
& z  {$ R9 o( K$ ]5 D  H
0 R8 v! L- R" D& `  v! kto update-credibility-list
0 D; `' _2 b" K3 ]/ ~let i 0
, `# E. [+ x1 @( V2 K4 N6 N: y' jwhile[i < people]
5 |8 H4 {- }. D[) |) A* r% Z- u* g% `( \
let j 0% ~  `( d9 C8 J* R  `( l- G. }- S" X
let note 0
3 z) N( Z; R! C/ R- {: @, U9 R7 Klet k 0
, B) j( R) J4 n;;
计作出过评价的邻居节点的数目
+ J9 w' a: [! d- x; ^; z8 V3 {while[j < people]
- J( X/ D% d. e6 ^[
  F5 q1 V5 C6 F: @if (item j( [credibility] of turtle (i + 1)) != -1)
' q! q' {# }1 Q0 t;;
判断是否给本turtle的评价质量做出过评价的节点
" y" Z% Q: E7 x[set note (note + item j ([credibility]of turtle (i + 1)))
; q7 W6 A( `; [% f$ F8 P;;*(exp (-(people - 2)))/(people - 2))]

: S+ |5 b1 \0 T2 D+ _set k (k + 1)
. f, S& a8 n4 C]$ C6 Q/ \2 J# V4 _
set j (j + 1)9 r/ y" P5 u( D  c) T: k( `
]
- h* q$ C6 E3 Y7 c- D: n" Fset note (note *(exp (- (1 / k)))/ k)
# C! ^+ N8 \8 R/ F+ n, v. bset credibility-list (replace-item i credibility-list note)
8 f' o4 C) |3 \, @5 T( X- [set i (i + 1). T- q0 l* R6 Z8 ]8 e1 \9 q0 Z
]; P& t7 N9 m5 c5 C0 g% M
end
2 P% r" p5 r" h4 @0 q9 H( n+ t. A/ b0 M: ~: Q% J' {
to update-global-reputation-list
3 {. C. W' I4 q; E: alet j 09 K, p. j: q3 w
while[j < people]( ^/ T: N7 t& x# J& c/ h- I
[. b+ ^# x9 n. N9 Q- R
let new 0. K4 e# F: }3 X. a4 k
;;
暂存新的一个全局声誉$ I0 q" I% m7 V. R% [
let i 0
! T9 }# P" s3 e- ]& Slet sum-money 0
4 y/ Q  q% [  X% Y4 Olet credibility-money 0/ f$ r, A/ @# z6 j& ^% J/ _
while [i < people]; K7 Q1 Z( P. _; n* \5 S' P" j
[. |) C, E+ u- P. ~9 P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! G8 s3 [) _0 U) Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 Z' r8 ]& `: h- K
set i (i + 1): J# @7 Y# j: A: _
]
. [8 c3 O$ z; }2 x4 Mlet k 0( K& R- u3 ]+ h, @3 M& V4 [. O1 Y
let new1 0" p4 h* f- C) d5 G
while [k < people]
4 U: G- n# b4 W[
3 X" ]+ m5 U- G7 I/ _  A& tset 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)5 n( ?+ c7 U% J% h- u" S
set k (k + 1)
0 i3 L+ ?* N  ?/ O! p]1 C) `8 i  M+ ]3 E8 w# c
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) ~7 E& w: R; G' U) E# F4 X8 L/ B
set global-reputation-list (replace-item j global-reputation-list new)) x' J% k! L# A& z+ @. y  Z
set j (j + 1)3 e6 p# e- d7 S5 N, c; Y; w3 ]
]
- A( _) Q8 E! f+ t9 D3 R* u5 d6 Bend3 o, V8 W& G( Z) I5 {  P" o

( o/ Z) R* w/ J4 d+ D$ z# Z3 v- a! ]1 p4 k5 i: b

  _+ [0 U% X* Eto get-color
0 }! i$ w2 g6 g6 w! z" `2 m$ Q' w+ s/ P7 T" ~
set color blue
5 @" N3 x+ w9 L1 B: U; C
end
4 Z4 R8 d. L' b4 Z3 }5 q) Q7 d5 ~# J9 ]$ V6 N3 X5 R1 I/ k
to poll-class
; C& J' m! l4 P+ S  q- _5 Lend
6 O7 c# v) M6 V4 x! M
1 g* Z; P0 W+ }# X/ a8 _to setup-plot1
! F( e& A' H1 y4 k( I+ d
) e- J8 r, [2 v+ Wset-current-plot "Trends-of-Local-reputation"
0 u' Z- m+ L7 Y3 z* Z  ~7 p( Q5 F) Q
" _* V% v. S8 q6 w$ w0 K
set-plot-x-range 0 xmax
" z  e$ B" A5 C4 u
2 q: x8 q/ s+ n+ t
set-plot-y-range 0.0 ymax

8 c" B9 |3 {+ l, o1 _. Y$ w# dend2 b& a" V) ]1 |3 a7 [, j& U
; x1 r! \1 @& z
to setup-plot26 T# F& P$ V, G7 n
. \/ ]1 o* n( I+ Z6 ]
set-current-plot "Trends-of-global-reputation"
/ q% \4 a) _" \# F% ]
/ ?: F8 e% W/ t
set-plot-x-range 0 xmax

. n9 q  i0 G3 \2 d& U/ s* r6 X. M+ q4 W5 e
set-plot-y-range 0.0 ymax
2 f( V# o  B. V6 j$ W3 ~  `7 R* L
end
! Y% O, t0 S! m) @8 E. D5 j- D* ?- G& g  n& u/ {1 _8 T- Z; C
to setup-plot37 k% t' [' z+ b& v2 ~: w* G
1 ^1 y. L: \, u" C7 z/ P( |
set-current-plot "Trends-of-credibility"

/ _2 v  ?8 @. n6 F, p+ d" y. H0 A2 W4 G; I3 c
set-plot-x-range 0 xmax

8 b; X  S5 ^: m$ \3 B
% I  ]# l' a/ e8 L2 j+ oset-plot-y-range 0.0 ymax

" w0 t6 Y% e/ b! L9 n/ V  R! d: I/ x3 Kend
, o: O; K: X8 W  j7 i
$ s3 b& ~7 k- p7 ?+ O& Nto do-plots
/ V: ?+ Z& s! w' |! v% J, {( Dset-current-plot "Trends-of-Local-reputation"0 s( q! N8 Y$ @. M; i2 I
set-current-plot-pen "Honest service"
$ z0 z3 B7 q& q' p$ @end+ y7 ~3 @/ H/ q& C" n. w# @; Q9 m* M

, P$ [; l$ E9 y! }! _[ 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.
  R9 T9 A9 T1 \* [: i- ~' D3 _. Y) v1 I  r8 |" d7 o+ w
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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