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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:
6 n  g% w3 d" f1 ~: K( Jto do-business
3 ^; Z  `( ]5 } rt random 3603 u/ R! k4 i; |2 r' }2 T) j
fd 16 p( M% ]+ I# B  `4 {
ifelse(other turtles-here != nobody)[
! Q  W7 r- s* ?! d   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.( a8 \! h; c, }0 |% U
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
* N' m+ z& K& ?3 z  D' ?2 v6 Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- i4 `5 W8 ]; P$ z
   set [trade-record-one-len] of self length [trade-record-one] of self
1 ]& t) h  h+ \  t5 m4 N   set trade-record-current( list (timer) (random money-upper-limit))
7 R; T/ s/ T' Q0 R) v) o6 E/ O7 V1 |. X2 `7 t! c4 A) n, T$ @
问题的提示如下:
3 ~) x: Z; j& [; n" o0 {( H. m) w+ n! r6 o% ^+ A( V
error while turtle 50 running OF in procedure DO-BUSINESS
! y4 m( L! @" t3 n  called by procedure GO1 R2 t6 g0 \  K1 R
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 \, j; X9 f: L$ S
(halted running of go)$ J3 d+ R+ h& X' y' U( N/ ^# n
5 g* t/ N% B: W* M5 x( p5 t) l, N3 D
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~~/ o  E/ D# l( u  r  P" 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
) V( e6 `$ N+ w! _" w, X# zglobals[
. R4 X6 m' i  Z+ \xmax
9 I" M8 X/ o& Z3 S( E" C! e0 vymax
$ a* t) I- R: X& [8 j. J1 s5 A6 Dglobal-reputation-list
4 i1 I3 }" N$ f- D5 I/ z% U$ {0 C. q6 \0 I# f1 h
;;
每一个turtle的全局声誉都存在此LIST
* I+ ]0 Y! u1 X' M8 `, I# zcredibility-list
$ f1 ?+ Z- Q2 n# E! i2 [;;
每一个turtle的评价可信度8 B- V, ^5 ]# g3 f' u+ a% R
honest-service- {6 q$ l* s. e. s0 C! @" d9 h: w
unhonest-service. q( O2 A. o- P
oscillation" V" k. V! m2 `* p7 x
rand-dynamic
0 l# U% s5 b% c  t# n( Y1 ~]
+ L6 {* a0 N* Q$ u) A/ Y& d- A! L1 ?
turtles-own[; u! {) K8 |+ m1 d! I. ]" T" ~
trade-record-all- v4 K6 ?: \* ^9 |. \# s
;;a list of lists,
trade-record-one组成- L6 `% A8 \" k7 b
trade-record-one% U* f# Q. y2 j8 f$ Z. b" d7 E% t
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 q* `2 y2 K# k& T4 V

: F/ W* r& K" a;;[
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]]
. A2 a( f8 I, d2 [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]
, B& N* O& T' |6 t+ W; Fcredibility-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
+ C4 f& ~1 e! z' r$ I' bneighbor-total' }$ z( B! J& E) A0 W: U3 b
;;
记录该turtle的邻居节点的数目
& C% I& Z: }- }0 x7 u' ]trade-time
: |$ |4 ?3 Q7 |# n* p;;
当前发生交易的turtle的交易时间5 ?( d+ t1 \- k# P
appraise-give
# D% {! n) l1 Z/ J$ U;;
当前发生交易时给出的评价
" b; n, ?1 x* O: M* Y0 M% Gappraise-receive
* v) L3 j0 e' n;;
当前发生交易时收到的评价0 j  n  k. C& S% V
appraise-time% e  q1 g# ]& Z( X% U
;;
当前发生交易时的评价时间7 o! \& a0 c3 `' {( \) A8 E# g
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 V! r9 w. x* J, x8 n3 O- S% T! ?trade-times-total/ j& g+ z! h- J2 a
;;
与当前turtle的交易总次数
6 O. A/ z  T, x7 F7 i, Ztrade-money-total
4 ^4 d5 E1 ?4 `+ W;;
与当前turtle的交易总金额( U* U6 y7 N" G; M# f8 ?
local-reputation
& i* S8 N0 D9 r( Mglobal-reputation
4 R% \. W7 }! p3 Jcredibility1 x1 A! [0 i6 r. @! [, [. X$ j
;;
评价可信度,每次交易后都需要更新( r- }/ O  t: \! F' p. \' H
credibility-all
8 E3 [* c( U! v, [* ?6 {9 Q;;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( |* s# B0 z( e

' f* g/ |) f6 R;;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
4 a. Q1 O/ i8 o$ ?7 e7 a) t1 ?credibility-one
* ?9 a6 n% F8 K2 r: p+ i3 c- j$ m# f) A8 R;;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
  _: j4 h% N" ]# ^+ C. }global-proportion
  U* N: _: m/ A! L* icustomer
3 w) U* _. Z7 Z6 {0 E# u$ Acustomer-no/ r3 d6 [# X% _5 x
trust-ok3 a3 @3 O6 c" z5 u2 d$ A. b4 d  ^  k( z
trade-record-one-len;;trade-record-one的长度
) |# _8 h0 g% D. }0 o6 l+ E6 j5 M]
) O2 f  |4 @' m9 H- X3 \3 F, h, c1 o$ l
;;setup procedure$ w6 T# y( g) j

5 J$ R/ p, E0 {2 ~to setup
- X/ d# {- a% @+ @% u- O, L3 d. W
/ R( r( x* }1 g6 cca
# H3 n7 {% @2 R4 c3 t
; Z# L% a+ D+ ?- b) ~. m9 J
initialize-settings
( D$ _5 K$ O0 q

) _" }1 k3 @! ^  o! U* l7 S$ Zcrt people [setup-turtles]

+ C( T. O4 d( _; v4 o% s: l. S8 _, _9 e$ w0 E
reset-timer

" r) v2 U; {% Z* P1 r) @! O" S
' a3 b$ M5 P, `1 ipoll-class
  Z5 ]  e, B4 u( C! E( \/ r* U) L
" k, d5 F" m4 s. M0 |# `
setup-plots
1 v6 |  }# S- D6 X8 h( x

" e- a  @: B2 u/ ldo-plots
) a) G4 M8 z* ?! V
end
. C" h# i/ [3 i+ Y6 v7 I/ t; X& Z& Q
to initialize-settings; x* c. K0 n8 ^# n- X

5 Z( T6 w( h& T# ?1 T" rset global-reputation-list []

1 L4 q$ v8 W8 Y2 V, L+ l9 E- f. v7 h  p1 }: h- `
set credibility-list n-values people [0.5]
/ P% [3 e2 w& _: I

% a( Q6 ?% {' a! z  P  Eset honest-service 0

5 v* q' s; c0 \! F4 F3 Q( ~. s' ^& Y; s
set unhonest-service 0
+ U. {( o4 B2 @4 x+ w' Y

7 t6 ]1 A+ }8 _$ Q  p( hset oscillation 0
; _. m# ?" r# c' ~, P
8 y4 _. R$ u& H% l
set rand-dynamic 0

1 ]' N+ z( o' {5 ]% Hend1 L' i: W# l+ }! ?! f
3 S" I3 I- s, p6 h$ m- W! t
to setup-turtles
( ^$ O6 A( [- d7 w3 kset shape "person"
8 U1 P! m4 a6 W: L4 a& Lsetxy random-xcor random-ycor
( i$ _2 ~, W0 E) aset trade-record-one []
( I6 o& S4 M" B0 x* ?# x

  \- Q5 U# P3 qset trade-record-all n-values people [(list (? + 1) 0 0)]
. c. L) [, _# F1 e" y% g

0 v; ?' Q0 c# q6 v1 dset trade-record-current []1 S1 P. v# n" A; A; V
set credibility-receive []
! t8 v5 N0 B" m" h9 Rset local-reputation 0.5$ ~6 l2 `3 C5 i" X. D1 j
set neighbor-total 0" l" u7 K# T- Q6 l, ?
set trade-times-total 0
- _. _. q" v& q$ i0 c' _% z% Xset trade-money-total 07 d: Y  s  R. F( A) g& ]6 B7 `
set customer nobody
4 {4 @" O( [9 \3 ~* ?set credibility-all n-values people [creat-credibility]
" g" b( C# z% U1 Q5 Hset credibility n-values people [-1], k) u" h" U9 ~' A3 E3 v! [/ R# C
get-color
$ A5 t( w  j7 u0 C) ?. E7 B; Y
  J6 H. G) O' }- }9 C- ?( a
end6 {4 T8 X; J3 J1 {9 M/ u

8 V. t6 R2 V4 M) Tto-report creat-credibility
, H) F# K3 h+ n' vreport n-values people [0.5]
( `: X7 S: [4 \8 b5 [8 s; g7 L" _end
2 `# [) I; Y7 o5 g7 a5 A7 x( m
" y/ a. V2 E! @2 L! \1 N) ^to setup-plots# }/ |) z7 c" x1 j# T$ j8 E$ d+ O$ Z9 c

* t1 |: e, [$ R- e& P# T6 Aset xmax 30
% C1 c5 y& X7 u  `1 J, |: }' [
$ L% ~- d, U  N
set ymax 1.0

( S+ {; V! @2 _8 H
  d9 X2 W) P3 Q1 L% r# h) |! ]clear-all-plots
5 V& a0 s6 i8 R) {: e
" a9 p1 y: u7 g: |
setup-plot1
7 }0 s! R4 E3 d4 H/ F% J

# g3 b9 D# \. ]. B% M5 R0 Qsetup-plot2
# E" u+ ~0 a" O  w9 ?

* |# s4 j, N$ p" Bsetup-plot3

$ X4 i; Y8 i( q) H' |end2 y3 ?! Y1 w7 D8 E, F

/ y$ K: T* N9 K; g;;run time procedures
$ `/ ?8 `, R9 \( j- Z1 B0 W$ c6 E8 P, H1 [# ^* {1 n% z
to go
+ O+ f7 G2 o' h7 D
; K1 p8 I9 l4 T4 O$ aask turtles [do-business]
4 R4 u. x- ]* G. V+ E! G
end
! b& A5 M, q: w' u& [' F5 H: b; I) A" C0 o
to do-business
1 n' p; h2 ~* E! m4 Z: H

! o7 O9 F- g$ N- C+ O& t+ V; W
7 s1 {9 R  H5 g6 s0 D7 h! `; lrt random 360

6 a- \/ y" S& F* F' i. T' R" J3 ]% h8 E0 t* V; R7 ]
fd 1
9 v# b! N5 K' P: d* G: t0 H
; R! _- e# b4 b
ifelse(other turtles-here != nobody)[

5 _5 H: ?/ j# v+ ]! ^, f( n
  I, b% f. A' X% H: h! c$ y" @set customer one-of other turtles-here

9 S+ E3 \0 r% C: E& z  i, d# \- e7 a* d) y: o1 q8 k
;; set [customer] of customer myself
# b; E( q. c# Z# z  s
% N6 G9 ?5 S  E9 w) H0 r  s
set [trade-record-one] of self item (([who] of customer) - 1), r% R5 q4 j- L# J" t
[trade-record-all]of self
# {+ {. \2 o# f+ e. {+ e- D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# C8 \9 w8 g: [- @6 \1 l
% {/ d/ _$ w9 C3 r& ^+ l  d6 V
set [trade-record-one] of customer item (([who] of self) - 1)* @" H" z' i% R# p
[trade-record-all]of customer

9 P  u/ U7 m$ u, }5 v: ?  u# W) D. C* D% [
set [trade-record-one-len] of self length [trade-record-one] of self

  x, @6 G& A; G. {5 I4 M4 V
" \0 ~6 `  z- @" nset trade-record-current( list (timer) (random money-upper-limit))
8 r; V8 P  R& @  o, ?0 i
9 C: K9 F. S4 D5 E! z. X* K
ask self [do-trust]
, Q$ H1 x/ G8 \;;
先求ij的信任度
0 M/ q6 \" ~! ~/ y9 q- A: p8 K7 o. E& B- \7 K. i5 ~3 G
if ([trust-ok] of self)
  A, V' `, i' J& u3 J5 M* ]: k;;
根据ij的信任度来决定是否与j进行交易[! M1 `# Q6 m5 w7 I/ E+ t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" H  O/ F! n7 X

+ n( j. V3 J7 w1 g" Z[
+ Y' ?8 c) Z# d7 y
. ^8 R* v" `' ^. s; @
do-trade

; A/ L$ v( B6 ~/ k
2 I5 S, w6 c9 R! rupdate-credibility-ijl
. G" P$ ~0 G. p+ i

/ s+ q6 F7 B$ U4 \+ {update-credibility-list
+ E4 [( X! E( B  [/ j/ B/ @

5 m+ c4 r  f2 x; d, _
' G/ n# d% A1 R5 @& n% Yupdate-global-reputation-list

# N9 o* u) n6 f0 y
' t, Q( A. T9 hpoll-class

! q* r" f, X: ]$ g+ v
5 Z/ M6 ?- ?3 b2 zget-color

1 \# K( `  `4 T1 s9 _
- _! N+ N. y  {* b* _; n$ w% Z]]
, a  E5 }+ d4 ?2 d  A7 d9 b7 W
$ K9 H+ S$ h. f4 o8 a# b;;
如果所得的信任度满足条件,则进行交易
$ q; E! O; {$ ^1 T3 k  z# y
" p% W+ y" R/ u$ U[
5 F) q; g4 l, q& u& y

; s6 c0 v1 j3 [/ q/ ^, m3 {4 M+ brt random 360

- E9 f% U! n' E; j
7 K/ T9 o# A' Sfd 1
$ k9 c2 x1 m1 a

/ B; H/ A+ d  [, ]/ T; u]
  P, E* m' \$ O/ L* C

% ~% W" s0 T. R+ nend
: N3 ?& W- x; F* f0 ^5 Y& x6 l' U
) P4 B2 t1 l% p
to do-trust 2 h) I; g" ?6 y' F; H4 Y& C+ }
set trust-ok False
& A( X: O6 }8 l* e9 L: M% j! u" D* y0 t1 Y& |6 L+ j
3 x1 _. w9 Q2 V& O7 c
let max-trade-times 08 d. {! l; e! I) `9 G( B( `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. P. A! w$ Y5 ~& r5 A* {' A  I  i
let max-trade-money 04 G1 W" h; M; D* U" P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 ?; w7 r, k; x( H* Q. olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ D+ X' [$ X  e/ e( @, s

  e+ p: O' c# @3 ]  ]9 V

# E; l# I7 \7 Zget-global-proportion
# |4 W1 g( [: Ilet trust-value
; I5 n* Z6 m4 b1 ?1 m7 xlocal-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. H9 g/ N6 F6 z  b
if(trust-value > trade-trust-value)( x1 A" J' l9 ~/ n3 T  Q
[set trust-ok true]
6 D& ~6 N$ _2 ]) }9 m5 Cend
. o  n$ a0 s; j5 ^) o* E  m
4 y9 S  U- B  ~" yto get-global-proportion
8 y: l% w1 x. P% mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 _0 k0 y( e( ]# d& A
[set global-proportion 0]
- L1 l4 c/ `+ }: j6 ~[let i 04 m  h; K' Q0 V
let sum-money 0
6 P' L6 o4 i' ]7 Y- Z" c' F0 A. Owhile[ i < people]
1 K' h( v) h. u# c" a/ N, j[
3 N- O4 `% B. A' K  D3 E$ Xif( length (item i( l5 G4 m& L. t2 i1 Y1 z4 J
[trade-record-all] of customer) > 3 )
! v. y9 y7 \# \7 O* x- l$ ~
[
5 l# Z9 O0 A" ^' x8 u7 y8 rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) l7 Y7 s4 l5 ^# W: N% \1 ?% K1 Z]! E( e  f/ n! \& I
]* e2 {$ e( `, g9 h$ w+ p# h
let j 0* A- z$ }2 D' {" B! ^8 a
let note 01 G  Z7 T# [- F7 J# l  h0 n
while[ j < people]
; t  J1 Q- r3 G; m  V- [[; B8 `4 V- u$ [  X
if( length (item i2 X( [& ]" _% P8 r( W* F
[trade-record-all] of customer) > 3 )

0 n, c. \% d2 r6 g3 r[+ W2 M* X/ w7 @6 ^! ^
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% H2 n# a8 @" N' S$ |[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 N7 \" l/ V2 Q2 P' `- e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# r( k+ p# O, {5 c
]7 g5 q; f. h4 P8 L5 \
]. E( D2 P# R9 |. z1 A0 H& ?
set global-proportion note
6 {' S$ p, y1 i]- J* b* ~- T( y$ H$ w2 v# Z
end5 h  B# k/ o: n% g* c4 z- X
" n5 p* e4 n& y$ g
to do-trade
" ^4 v9 y% |7 m. h" V! v;;
这个过程实际上是给双方作出评价的过程
, i" \  X4 g) y7 d% Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" }4 I! ~5 x$ \- b  r  N) C, A# Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% }. j, [* M# @! `: M& F
set trade-record-current lput(timer) trade-record-current
- V! i$ @( ~0 F& F8 d* o/ O& Z( y;;
评价时间
3 O3 p( }3 x+ @  W7 Kask myself [
9 l; o  l( {8 d* n: V. tupdate-local-reputation
: x- Y6 k/ ]% r. Nset trade-record-current lput([local-reputation] of myself) trade-record-current
" u- R( u! W! q]
, ?5 {$ D0 }$ B2 h0 @& T& pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 n: \5 u& ~6 h
;;
将此次交易的记录加入到trade-record-one) @! F, _4 R" S# r4 F6 J5 m& i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 n  |4 Z! V/ Q) Llet note (item 2 trade-record-current )" D3 n  a% q+ t: U( T; Z
set trade-record-current
" y2 O+ ^& v6 x/ |, ^(replace-item 2 trade-record-current (item 3 trade-record-current))

& d/ ?' w$ }! D1 {: _+ Hset trade-record-current/ n& B1 F& C) L  q) W! Y
(replace-item 3 trade-record-current note)
4 x' N; e8 ~1 I) V0 n4 w6 o/ @- `2 f$ b3 Z
8 y" F* ~7 D0 k( d3 _
ask customer [
- s" ^: p" N+ O5 P- ?% A6 v7 _& Lupdate-local-reputation
3 J  C9 I# r- [, P( j6 s  [7 Kset trade-record-current
/ C2 E% |; I4 C8 o3 B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) s/ \& U% h/ s3 n
]
+ \4 k+ y" N+ d. K: \; }9 n; l7 W
# u7 L1 Q1 J) ?& D
  ?( n5 g' U6 `; O2 a" E$ A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 T5 T: F0 _+ L* G$ Z* m+ f
+ ]  [8 t3 ]; }9 s- J& T7 X
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 n, V2 C) s) S% x2 L- {& B
;;
将此次交易的记录加入到customertrade-record-all
+ |7 f0 k2 \% O0 ~2 s( f5 }7 uend# `, ?. g7 Y  i; m$ n6 T, c

7 H9 y0 z1 _" \: r: Mto update-local-reputation
( v) b% V' X; ]- f$ T' Wset [trade-record-one-len] of myself length [trade-record-one] of myself% c4 _4 h+ R% S6 @6 j  D& X8 q

& S; m7 d3 j. C6 @. \/ j. n; X# m. p
;;if [trade-record-one-len] of myself > 3
  n$ v9 o* O! }( g8 F& D) A- F7 A
update-neighbor-total
7 t; B& k# p3 s8 L  }  U% d. ]. r( };;
更新邻居节点的数目,在此进行
) _) q8 o" F8 t# Y" j. zlet i 35 d9 X3 |, {) n0 z0 v
let sum-time 0- m9 M( @5 M2 V# \1 K
while[i < [trade-record-one-len] of myself]% B( s. U0 Y* b+ h( I, K! h3 w
[
" S: C3 M6 k8 \% x5 v8 [. i& kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ q4 @5 X2 f  A% i. @- Fset i) o2 @0 U. U! S' q
( i + 1)
$ g( V  I( L- z. A: c) C' k
]
" {5 `8 I/ r- ^% l$ Rlet j 31 M1 |9 o) h9 Y# C
let sum-money 0
4 J; ]3 P( M' Q$ }while[j < [trade-record-one-len] of myself]
* Q7 @' Q" R0 ~- I: K  K, D[
# m0 [  G) F$ y  gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
7 x7 I7 p( [5 @+ \; Jset j2 C2 y: u. w9 Z' ~1 p0 _
( j + 1)
. d. {4 a) z/ j( b: v# y
]- Z1 Q+ h5 L1 u7 U' s
let k 3: v+ r$ Y3 F  z; `( Q
let power 0
: E6 a: O- U. _, Vlet local 0
7 z  ~' [) @2 b" N, hwhile [k <[trade-record-one-len] of myself]
* R0 i. Y3 k5 a4 i% \8 ^7 o[
6 I# ]) w% L8 _/ }3 T. [. [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) 9 z, N8 T6 q4 E0 K3 U+ z9 Q
set k (k + 1)' B: M& g9 ^, u, {
]
/ n$ J8 D. r1 J) r! @$ w8 b0 eset [local-reputation] of myself (local)+ r0 B/ N+ @  L8 s/ a  P2 I
end
1 o; {, h2 y: i7 b) G5 t( N3 g" S2 a
to update-neighbor-total) k9 c) m8 I7 B' m0 |1 ?+ L% o

& D" M6 o, F* H% U: Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* E$ `" w" Q: M- d4 S
% R, C! c! O4 v* [

: V! h3 Z4 [) p0 b, bend7 B$ F& ^* [$ w& f) N
4 m/ H3 @- H, y$ G- z% q
to update-credibility-ijl
" `# O: t7 m3 H# B) k% o, K0 G2 Y) C6 ~  ?3 k5 N: {
;;
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。
3 l  `! _9 U% v8 Z! wlet l 0
$ C8 x" X; g$ q8 Y$ y1 h3 }while[ l < people ]4 H* Z* p; N$ `) z7 t* _5 Y
;;
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" b# R  p! _( ^- N: ~, `) w9 P
[0 \; V  P7 E- t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 K7 s: J6 j) ~1 R) A6 j4 ]5 P- l4 J& c2 mif (trade-record-one-j-l-len > 3)$ E: R# n7 {! I1 t2 c* X* T0 {4 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-one
5 n: k+ W+ }, N: z$ M3 ^6 qlet i 3, T- u; D! T3 U( J- V+ C2 w
let sum-time 00 J3 B; N8 D0 U6 c! u
while[i < trade-record-one-len]
0 O8 {/ z3 [# Z3 y[6 q3 I" F% y9 P- {& A1 K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ Z9 J  |% q3 U9 o  W1 zset i/ p  A6 v, ]) Q
( i + 1)
" R& y# D/ \' u9 V
]
( y. v6 T# X3 e% {let credibility-i-j-l 0
- c! E6 r0 e! W3 }( ^4 p6 h; ^1 X;;i
评价(jjl的评价)
- u+ T4 `  F* Q6 {9 {, p3 Wlet j 3
0 ~- H; ^  I: D1 |! x! `- |let k 4
/ R6 S- ~" `0 D7 H# B8 S( p+ ?while[j < trade-record-one-len]
; w" ?: Z) |3 K; }( A[% \  M+ b7 c; k2 d  _
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
; L+ v; }; M  o( N5 U* @: y, h  R/ [set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
; P# W7 s& [+ z1 H- T# @set j5 J5 R4 y3 ?' [& R" y8 r7 y
( j + 1)
& X* ]0 K) F$ ]
]- q$ M. \* c. T% x
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 ))
  r/ v5 {. O5 j  u: L+ X" s* p6 O
3 E; m6 X- B( l4 g7 l
6 _2 U1 h3 ~$ r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% k- {9 P' ~: [4 v
;;
及时更新il的评价质量的评价. l5 [; z, x0 Z! u8 }  @
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# g1 c2 E# P6 Y+ n* y9 P8 i
set l (l + 1)
- m3 R$ C9 x3 U1 t]
! q- r: u* m+ s3 T5 A# vend
$ G& N: o% Y! _8 q/ n8 ], Y3 [
# h  z8 D; Y+ Wto update-credibility-list/ e0 f5 i' H: t) `8 g% y
let i 07 H- i7 L& T9 N+ Z6 q( x
while[i < people]4 _6 Z9 n6 d$ ^) l$ @+ c
[* x' k3 \* |, q; u4 R1 p
let j 0
0 J9 k! Q  t* P8 ]6 L1 b) ?let note 0
/ n- G! [4 b- R8 o, vlet k 04 }2 k% f9 F( c7 L: B
;;
计作出过评价的邻居节点的数目
* j8 n9 k) r% \: X3 Uwhile[j < people], y+ v& V6 i# b
[
9 m- a: `% H; n% }  I" d# h2 dif (item j( [credibility] of turtle (i + 1)) != -1)* m$ h8 \0 O) a5 u( U4 H- k
;;
判断是否给本turtle的评价质量做出过评价的节点/ |5 ?+ }+ Y. u% n. |
[set note (note + item j ([credibility]of turtle (i + 1)))" X( t& G% L( F5 j; R4 H/ }
;;*(exp (-(people - 2)))/(people - 2))]

/ M5 W8 Q9 w/ oset k (k + 1)
" o+ s0 F4 @3 {6 P9 q]2 p  _  r; k) ^/ Z* H
set j (j + 1)
: A1 y6 r' l) N) {/ ~4 ?; I' i]( \. w. K! g" C
set note (note *(exp (- (1 / k)))/ k)/ S  n( b& K! c
set credibility-list (replace-item i credibility-list note)
- ?7 l4 X$ A- D3 t$ L* I: Kset i (i + 1)8 E3 p. y/ I- m8 d: q6 K- s
]! E' s4 A; ]. r' r
end
2 N1 B: e& g' Q# T8 C
2 t2 P, [# k* j# d: x- J% }to update-global-reputation-list4 Y) a: S2 t& i9 e
let j 0
" T1 Y0 v# F, p/ ]' Y* c- h6 fwhile[j < people]
8 [+ i  G0 K& ?) G) \7 P6 L[1 d+ e( }" p0 C
let new 0
% D* Z" `+ k! b! D;;
暂存新的一个全局声誉
! ]/ v8 u7 U  {5 B5 c. {let i 0
7 I" Z8 M+ E4 s5 x& s4 klet sum-money 0
" G8 g- S% b( _let credibility-money 00 S2 I) q  h, E- e, V4 W& B7 b
while [i < people]$ \4 Y. \2 P6 B: O
[0 ]8 y1 S6 W$ \7 K2 h8 J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% L. Z9 Z+ m( M" S4 H* K% nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 i& O/ i1 P8 Y- c+ g
set i (i + 1)
- O: \" P% v9 p  h6 T2 [0 n9 D]( C% k4 k# E* B, K; D9 d
let k 0
* X6 K) E" U5 M; }2 L# Q3 w: {let new1 0/ Y, s, F, P0 @! x' M$ \: i7 P
while [k < people]% G2 F; J+ O9 H( }, ^, k  l
[  z- ~/ W0 W3 M0 W4 {
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)
: P/ O; \* S* tset k (k + 1)
. G9 u8 r+ e5 F9 `]
2 W# v7 Z$ k- i$ t& j- _4 I4 yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
. Z+ u0 B- `8 B( C5 R4 E3 d: f# ?9 Cset global-reputation-list (replace-item j global-reputation-list new)
- p. w1 V. Q% ]set j (j + 1)
! J0 o. Z" {8 @$ U9 T2 ?]
9 I4 v5 V% I/ t- @; K. p7 vend. [+ A: x3 B2 E, ?/ m

( F7 [4 _9 p( s# T0 _. x1 G
# h! D) p8 Z- u2 o5 r' D2 }* F7 U8 E  {/ l
to get-color8 G  f( q( S" [- k$ ~4 ~6 X, j- D

: K7 [) b1 T8 b2 q  [set color blue
3 Q$ I) o: u$ O! [6 v6 h1 G$ r
end
9 z+ ?( _; h1 M
8 ]4 j: r; z, {7 B: k" jto poll-class
4 w) J- E8 ]; j: Fend/ y5 i" j. {, _8 l* {; r/ {$ b
& M/ B" @8 _* U% K- z. t. C7 M
to setup-plot1) g& Z0 Y4 a3 G- R) z: ?
8 f( [9 {) N7 o5 H
set-current-plot "Trends-of-Local-reputation"

  |7 n/ q5 ^% J& e. K5 ?* v
: ]; S3 z6 Z0 |7 U5 Pset-plot-x-range 0 xmax
5 z3 `1 O+ J8 r! C' G/ _9 L

9 k' R& Y7 C1 d  K- L4 kset-plot-y-range 0.0 ymax

1 v- Q: e  l: w8 S* V# Rend
( z, @: {4 B- |# ]5 C& k5 Y) u/ K% A5 f9 V. [: l% q& h
to setup-plot2
/ N! B7 @4 ]; J' V: Y
2 t: J; Q) ]5 @1 Oset-current-plot "Trends-of-global-reputation"
  l: M. z) j) }, H# @$ g2 G
7 f/ E, S# ]7 v0 o$ x2 n8 K* O5 l
set-plot-x-range 0 xmax

9 {3 m  [5 R! `; \2 u7 h
2 I* @  b& h! Q: w% d$ U5 q: Uset-plot-y-range 0.0 ymax
0 S/ v6 G+ l+ X$ X0 b0 H# D3 u
end* ?. A* r' |$ C& b% m
% l' ^7 M, C. _
to setup-plot3( x; b& `- v8 M" n9 l) h
5 T- R- l1 M. [3 M* [& L: ?; [
set-current-plot "Trends-of-credibility"

6 X  u9 @( B& L% V; ]7 J
# Y) |0 h. ]" U) L4 I, W- c0 qset-plot-x-range 0 xmax
+ m( H% Y' O" S4 }/ s( N, k
# _2 k8 H% \' v+ E/ \3 J( F
set-plot-y-range 0.0 ymax
- l: X) j4 j/ P/ w3 h! g
end
7 w$ G2 l/ ]" y3 W( v* ~3 m6 g7 t  r  P( e( b# z; m: ~7 G+ \- I
to do-plots
) a. x* r2 E+ J, |6 }& L. Aset-current-plot "Trends-of-Local-reputation"/ z% [' b/ e( E6 F) }6 S  K
set-current-plot-pen "Honest service"
8 K; Z* |- w# \. K6 g/ iend2 @- {/ m4 [: c4 S- l" x- Y
, D! W' `+ y& ]/ l
[ 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.
( Y* v. p! H: @, l' b, U! C- ], B/ E9 [* z" O
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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