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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:* t7 h  F2 d, u  [) P
to do-business
1 \/ |6 p' f+ [- k& M rt random 360
* L1 [3 G6 y+ B. b! z2 ~) n$ l fd 10 L& E8 X5 S5 A" q
ifelse(other turtles-here != nobody)[
7 r' G% ]* u+ f& Y, ]   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.
6 o! B2 ^' j- e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. n# e/ X  G( {% B' s$ o   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 k1 b3 M, l3 Q# f! X# I" Y& s6 D   set [trade-record-one-len] of self length [trade-record-one] of self
3 ]) ?! }/ [% E5 P) t   set trade-record-current( list (timer) (random money-upper-limit))
& w% N% |; u1 T' a
' H. A4 B! w2 z5 c' g9 \问题的提示如下:
/ Q7 Z3 ^; E$ h3 `+ z. X( k- }; b% [. r% `+ B+ u5 a
error while turtle 50 running OF in procedure DO-BUSINESS
+ R: y9 H9 R4 j9 j2 }' t- R  called by procedure GO4 J& Q& L0 M/ b/ E: _- R
OF expected input to be a turtle agentset or turtle but got NOBODY instead., j5 ^# x' L4 D
(halted running of go)
* R8 i9 m% W( R0 h( }$ m% Z: w
) Z/ Z4 ], `" @, S0 ^1 M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~~
) Z3 j  e( n0 ~+ [9 o3 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
" ?, y& Q# e3 z6 n( N' I) Oglobals[, b  l* P; K5 a6 q$ p( j% {& N
xmax
9 q' A- H' x# I6 ~' |" Q: J' t3 f4 Jymax
) E9 G4 G0 {$ s' I* v. aglobal-reputation-list
# A6 u$ w9 z1 V; g  e6 X
- _4 T# C; Q/ R( f& j# K;;
每一个turtle的全局声誉都存在此LIST
$ p% [/ h5 v1 d3 ccredibility-list
3 n9 @5 X/ Z" ^9 y3 v- A( q;;
每一个turtle的评价可信度
3 x, ~* e+ e% Nhonest-service
) N: X* A" w. {, D) ]+ t2 Zunhonest-service
% @0 z. u6 A) p( D2 xoscillation
- f. V8 {8 s( `7 T2 W$ ~: trand-dynamic
$ C. w$ P2 T, S7 h/ Q' }& i: X/ @]. z9 T; P! @# i. I# C* d

6 X0 l8 I' y# pturtles-own[
6 X0 `( T5 Z* T6 Strade-record-all: W( G) J. K1 w
;;a list of lists,
trade-record-one组成$ Q' e: X# O% z
trade-record-one/ }- d9 u1 a$ }6 U
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  D" c- F; R  N6 u

3 p2 d2 Z1 u; a& C( 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]]
( x5 f# P# ]3 Q1 f; itrade-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]5 c) j( H" d9 P" G/ c. E9 Z8 E& 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) ]5 L: m, E4 {% H! E
neighbor-total
! ^) ^1 F: z, c" j$ E: F;;
记录该turtle的邻居节点的数目
/ Y% k; J6 M9 e6 ?& h( \* p. ttrade-time
) h2 G1 x& `( m;;
当前发生交易的turtle的交易时间2 v  i- F; C  @' q; r7 b7 S7 L
appraise-give
3 n) m. A% r" k8 L: q. I;;
当前发生交易时给出的评价
* w6 d( l3 C8 Y2 j5 I: Pappraise-receive
2 c* ^0 n: D. u3 G1 u& ~;;
当前发生交易时收到的评价$ h* d! p' U: L& L
appraise-time7 o8 R' i5 M& z: M/ G! _2 ]4 g
;;
当前发生交易时的评价时间1 j7 R% @9 K$ m; E  \# P
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 O& s* F5 w0 u% Q% `$ e4 mtrade-times-total
9 J1 }0 g8 E( [;;
与当前turtle的交易总次数3 F/ h" W! D+ d  \: L5 _
trade-money-total
; z# w6 @4 r& H" r;;
与当前turtle的交易总金额5 N2 G$ z, K" N4 d, u
local-reputation6 y& v  g, @; h7 w" @
global-reputation! a; ^8 l7 V; z7 k3 v
credibility! a. c  p9 M2 ~+ W
;;
评价可信度,每次交易后都需要更新
4 U  Q( d- B: B2 t3 Jcredibility-all5 f* V! n1 I/ `- [- R9 p5 @
;;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 N: n+ \; i, [
* H) C3 X# o. T. t& H) T, W;;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$ Q7 C% Q/ |6 X
credibility-one
5 p" K3 Y) K( b% ~;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people( i, b" f% E% \$ C* G% K1 P3 o
global-proportion
. N* R, v( D: V5 e9 R' T/ s; Lcustomer
. p) f6 a2 X( U- O9 h+ Q( Rcustomer-no
1 F4 f& F5 s( b. Y" Itrust-ok5 \0 _. p  p: a& [
trade-record-one-len;;trade-record-one的长度0 ~0 ~. ~0 s; R  p
]
# E# l( h+ W; \: u  N9 ?1 Y* I9 b  ~# ~! L
;;setup procedure
4 `  J  }; t/ S# B' C" w; J
" m/ S+ Y6 p8 B7 X. z6 a7 Cto setup5 C; }. i2 b: g1 Q7 X7 _* ~
6 J5 `- c* f. b- x, `1 y
ca
' u1 G; P# ?* I

: w7 @  D3 }, }8 V) }0 Cinitialize-settings
" a9 J# U! ^2 y5 P) |  i8 k
/ E$ a3 q  `# N' y8 D* H' p
crt people [setup-turtles]
" I/ p8 e. |" l

) D* L* K2 R3 z0 E# d; ]1 mreset-timer

1 ]  v' J% A9 w5 o" ?
7 S1 g1 l4 X+ L8 [poll-class

. e1 ^# ?6 ^& f1 K7 r
0 F$ i: ?. @) t; E2 m% n9 S- a% r6 dsetup-plots
1 g" M8 r4 R3 Q1 w
1 t8 B2 m1 Q# n
do-plots
8 f! U  j; k7 U. P3 H6 T. d4 ^
end) G: K6 [6 M. B' P8 ]6 p

8 r; p5 E: p2 O6 {% L( B6 `  Dto initialize-settings
" J! ?) I' U# |5 N$ u& @* I( V, s  U" K6 a& ?* F
set global-reputation-list []
! g6 {& [& b% \: X

& W6 P5 i: s4 Oset credibility-list n-values people [0.5]

3 C8 H. |8 P# ], Z3 }3 C: T! @5 H8 W) k
set honest-service 0

* l& _+ ^* M, L0 B+ I) M# r, P8 J! l( Y) x0 F, E3 s& z$ T* x
set unhonest-service 0
- @) e* G- G, p8 A# v

  ^% i7 w0 l8 j; |  J+ y; xset oscillation 0

" ^; e2 ?4 o0 M0 P, \
' C9 f9 r7 u! n* aset rand-dynamic 0

" @) V' d% {5 ?! |end
% k. W* [& K2 A, B( \
7 V( O; w1 u4 d6 P- b: Ato setup-turtles
1 N. z0 j: w- w2 @7 b' H1 dset shape "person"8 ~( w! Z! Q$ ?" b
setxy random-xcor random-ycor& g) q; @$ ]+ N1 p
set trade-record-one []
1 l4 e9 W  E4 m

, n+ c$ [1 w( p9 P) `; h( x5 Cset trade-record-all n-values people [(list (? + 1) 0 0)] " U' q3 H& E0 L' W* t5 ^' r
# u9 a4 `9 g, X2 X8 w* `7 N
set trade-record-current []9 S+ L( t3 Q8 F% {/ F* G+ D
set credibility-receive []  }1 N1 V- Z  Q) h0 Y& G" T
set local-reputation 0.5$ @7 Z/ O1 D* u' k3 }! Y# C5 d
set neighbor-total 0+ |2 }2 M) o, R( a( r
set trade-times-total 0
. B  h/ k/ e; @% e8 n$ Rset trade-money-total 00 k& e! }% ~- r1 s5 _2 E
set customer nobody+ L# Y9 y/ W9 D% @/ n% Z
set credibility-all n-values people [creat-credibility]/ a& D) X* n; H
set credibility n-values people [-1]7 }! N, L# U3 O' S- ?# h/ g
get-color$ ^5 t7 Q1 o, \# m- @7 R
( j/ |6 ?! q1 j6 B6 ~5 R( T5 H
end$ Z% A) g1 @- ~$ U

) b5 T! `/ K8 `4 Ato-report creat-credibility$ O' o6 [' o  Q! \
report n-values people [0.5]1 _4 |- \) X0 _" e" W
end
8 J8 z5 P3 M( r3 E1 w4 M! M* u! b# T8 l' s
to setup-plots
9 Q$ K. B/ l  S( ?% y% {, B/ U
& `! T; K* y6 Hset xmax 30
6 I( c) l' P0 @3 O0 p
7 x' H. a- a7 F4 y0 Q9 w
set ymax 1.0
. n: ~+ f6 L% T: F: i: ]
/ g, t& x5 C/ ^( _3 L9 G" I+ g
clear-all-plots

3 m4 z/ h8 P+ S+ F7 ^+ A
9 O/ ~0 H' h: A( H) J  Q4 q! Ksetup-plot1

$ o! M0 p$ t1 {
5 G0 A0 S5 r! F/ M) \3 xsetup-plot2
# ^% @5 Q  q5 h

3 r8 Z# T$ R9 y' Ssetup-plot3
/ o4 I% i$ }1 b. a
end
: V3 v2 j( D( n, k* O) F4 I. K# g' C; i0 A
;;run time procedures
4 T, T4 |1 X& ]
* ^: _% l5 m  Dto go0 K6 y8 P: l( k' `

( k: L. }" Q* k9 s* |ask turtles [do-business]
% S( p6 \  M; y* J3 G; r
end
5 @  ?; F8 b- R" t& h2 u! i  V; Y8 U$ K# k  w* A& I6 w- y4 \3 }
to do-business 5 C. p7 w2 l0 o# ~( A% l
: S* X' Q7 J, |; r

  x& o3 x& C- G% Z0 f9 F( X$ B& Q7 Nrt random 360

1 m7 R* p& @2 K6 {0 i6 k! D6 j) u( U6 s  g# F
fd 1

% m1 W! u: L% s/ P' j3 I
; X7 f; Y. ^8 _ifelse(other turtles-here != nobody)[

: q% y. J& E  u$ j8 Q& x
: a& O( E/ A7 }! e- s/ J6 ~# `5 V9 Mset customer one-of other turtles-here

2 M7 \* @* `1 g, V* R) D6 o5 J+ g; c) }: b: j( J. U
;; set [customer] of customer myself
% p. {* [7 }# u+ x. `1 B- l3 e0 K

/ A8 \! a) r. V% nset [trade-record-one] of self item (([who] of customer) - 1)
) w, V, v& y& q5 @! k) L[trade-record-all]of self
) _$ m2 o# i0 e0 v;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 p: v4 m4 b& l1 z* i

  _. B1 e! _, E) W' Hset [trade-record-one] of customer item (([who] of self) - 1)
7 {. m) r' K. x6 j6 d[trade-record-all]of customer
. E6 `# X; P7 F% s  n" l* I3 [% z

. {6 A4 }5 R" U2 g/ s4 Bset [trade-record-one-len] of self length [trade-record-one] of self

1 P- p1 p0 }! m# x0 ]% H$ b8 B0 x& z4 T6 f: H' M
set trade-record-current( list (timer) (random money-upper-limit))

1 ]: o5 m+ y; R4 z  c. w: j& O% s% I& ]) I' F* c
ask self [do-trust]) a7 u5 z$ v0 v. y
;;
先求ij的信任度3 w, Z! K; L; X3 S# j* D$ z% s

7 z8 M& h/ ]+ r  v2 g: t, bif ([trust-ok] of self)
4 ]3 ^( }0 B3 q;;
根据ij的信任度来决定是否与j进行交易[* H. Y1 j! S& p; ]2 J8 `7 N
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ R- W  R2 B, o0 _/ j" S
/ l" ]  o$ q# c8 G. u
[
7 v, u2 ?, W6 X& U/ P  u

3 L7 k  t. A5 F1 N( v1 \- b3 ]do-trade

& D7 l' x, O- }! j
7 B" L! a1 }# Z9 y9 \update-credibility-ijl

. G( E+ l2 Z; `% p8 H$ r/ u' g) ^7 f6 O5 t4 o5 {# k
update-credibility-list
/ y1 G, ^9 E2 I$ M7 ]6 P: ~
( l* ?- l5 t: K' d! F' {

2 W2 R1 P8 e6 u8 y+ f! cupdate-global-reputation-list

5 ]% _; Q, @) I/ e! }7 p% }" _) @  i! k3 [/ K
poll-class

1 w, D0 L& v" g$ ^7 k; L, N5 \8 M4 z
get-color

/ I$ c. @& W3 B+ m5 `1 P. O
- c1 N9 A9 v* W6 T]]- P1 p: w: g) ?* o8 S
1 t: W7 [" H6 @
;;
如果所得的信任度满足条件,则进行交易7 Z/ q, H- h4 r' W$ J9 F9 _; A5 f
+ h7 C) o( K4 ]2 [& N
[

0 h# b" `+ t) }! |# v1 F3 h2 u5 c1 H1 |2 W
rt random 360
6 n3 C; e4 h7 c% }* @

' I$ s, g4 s# F% X( Z& m5 m+ ]fd 1

; l, x% s# @7 L% a
8 Q+ Z0 h' Q) X& r]
2 Z; \- q- b9 K

$ A( @) [& C0 Y% r- _end
: Z5 Q9 P( C2 h( l/ k7 Z
$ C; H0 d2 s+ Y; C0 Z& s  |
to do-trust 3 e. M7 ]# A; ]6 g2 _  O& {3 F9 o4 [+ a
set trust-ok False  H7 V- _; e$ T  f9 e" z
, E! S4 j- F- [8 P' P

& p) O6 p' e, L8 i0 R0 Tlet max-trade-times 0
' g6 V$ {5 S% m  l  Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# _0 e* x. n  }: L" h4 [, f6 b3 d- Alet max-trade-money 0& Z! o( A/ y- z4 l, x& S/ v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 N" B+ y2 u# K4 M+ y  ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" }  w) e* l0 V* [
) A4 k+ l" B* t0 G

" Y& N5 @# S0 k) s( P' |get-global-proportion
% ?  r2 ^( d& U6 l9 g% h7 Tlet trust-value
3 ?7 _- n0 l' ]' J  e  [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)

& @4 B' I4 w- m8 ?4 e3 qif(trust-value > trade-trust-value)
! f. q1 X/ G% C# K, L[set trust-ok true]
  R* L- u/ L- X& y0 {. bend* Y2 p# P4 a, N: i% _# s
: o2 z. I, w+ ]7 Q' b5 ]' U
to get-global-proportion+ ?% p; d- ^& @* G* [' j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 l6 m* u% {: C. Q% G% B$ J
[set global-proportion 0]
' L- V6 m3 G+ A9 O% K[let i 0
2 F" q' e& K2 X. ?* I# P! P2 Blet sum-money 08 O6 B+ V" E, B" ^, y* p
while[ i < people]
8 T/ G* x* k: g' e[0 {8 j/ ~6 B4 G4 e' f
if( length (item i
  ~5 t# c9 j* O& u, J' E  ^- |! q[trade-record-all] of customer) > 3 )
# K, g9 C8 ^/ k  H( b
[
& c( s5 I* p. k; ^+ C( |set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 y: _  c: d) R]
6 \  P- q5 a7 M+ U+ @  U$ o3 T1 n]; a& O7 p3 r  v0 K: J1 S) z
let j 0
2 G  ^& D! w* {9 J, f5 Xlet note 0
& p& i' j  o1 {- [1 [while[ j < people]/ z- _& y' |" h1 w8 ?
[
3 x3 @" z1 q3 }' \0 ?, h' lif( length (item i
, ^$ Q/ ], S* w" ]; H[trade-record-all] of customer) > 3 )

+ k1 _' M5 U  F' C4 v[
  j* T3 k, y4 f4 S3 _; i0 t3 L, Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 f7 u. }/ I0 {2 i. `
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' d0 |( _& f. m4 f1 _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( K$ y0 O8 e* |) C& C: N+ z$ B
]
* C) t, h+ u% s]
9 W: Y9 r' N4 V/ S4 Dset global-proportion note; V9 L6 e+ |: V6 x: h9 R
]
  Y/ U) k+ z7 Dend8 V) K: ^9 V( L. K; i! u6 j' i
3 ^' ]. {: ^  B& Q5 g, j( C9 K
to do-trade9 J  P! I) H- \2 t
;;
这个过程实际上是给双方作出评价的过程
3 {5 M0 x! H8 ~  B; E6 jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 g2 m- I- q- gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# x! h7 ^+ Y. |9 t$ M
set trade-record-current lput(timer) trade-record-current" [! e9 ]& b5 R1 j. A
;;
评价时间6 v1 p5 K0 {5 H
ask myself [
4 ^' q5 d/ l+ S) uupdate-local-reputation, q: [8 A) \& D; U! F
set trade-record-current lput([local-reputation] of myself) trade-record-current7 O2 o0 ]% C; Q( @
]
) p- Y3 e# Q' R* D9 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" s5 K2 T' Y& Q1 X1 z: x5 b9 H;;
将此次交易的记录加入到trade-record-one
! M" Y4 L7 |" Oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& `  _' k0 T2 `( U+ \" J$ hlet note (item 2 trade-record-current )) r1 C' I8 X7 ?' W! K1 Y8 s
set trade-record-current% ?% |# d$ d$ H
(replace-item 2 trade-record-current (item 3 trade-record-current))

) i( K" ^4 i6 i6 xset trade-record-current; O' V% t! G2 D0 {: _  a) B
(replace-item 3 trade-record-current note)
4 \0 o9 o7 M. g/ o  D/ k7 W, o% `! ^) P/ @* z, L. \  e' `

1 N7 N5 d/ ]5 V( x' m0 P6 pask customer [
1 z1 L/ H7 w* j  v/ Mupdate-local-reputation6 }3 b& D. [- F  O+ E  I
set trade-record-current( i7 A" ?( {, D! ?. f4 R5 {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- ~) `2 m8 }: {9 t4 h  P  U]
* ~8 S* X2 {! R8 `( e" N% \' R" b( |
7 q6 |' N2 m0 A1 S* \- e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, b% {8 q$ s6 p' e7 v/ Q
. _" }) a, |4 B! S7 _1 V8 f$ ?* h
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) s( ~3 s2 s) l: N# Q
;;
将此次交易的记录加入到customertrade-record-all
; O. u7 a( A& }end
: }3 g9 {; p% Q% I& Z/ V4 S- I1 j1 G- i! [+ K5 w
to update-local-reputation9 O9 t9 ?* \. f/ E9 s" ]
set [trade-record-one-len] of myself length [trade-record-one] of myself
" y( @6 [3 Z8 D4 J: g2 n: E* z( Z- `. F' o6 v2 R
" a3 a) b( U* k" W: R2 K9 ^
;;if [trade-record-one-len] of myself > 3
0 P9 B, ?* D& z
update-neighbor-total0 {+ M+ L8 X# o5 V
;;
更新邻居节点的数目,在此进行
* `! h  ]" l7 S' Mlet i 3
  e& s) ]! S) U2 T$ J, j2 Hlet sum-time 0' B+ F: y+ J- p. F* G9 ]2 ~
while[i < [trade-record-one-len] of myself]: {6 p8 `6 H6 m
[5 K3 A  r  ~; t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& i: c( O' y- E4 \. m
set i5 J0 e5 a1 d2 L" |1 _
( i + 1)
; _9 e  P* s: J. W5 V9 e6 Y: [8 Z
]
- i0 ?% }2 S9 f* tlet j 3
5 x$ s# ~# F( T3 Z# b0 z7 ~2 U# Slet sum-money 0
6 f( H3 ^& [& _while[j < [trade-record-one-len] of myself]3 Y6 d5 \7 M/ c6 r5 v! |
[4 z( I& e- z/ k" {  m4 E/ W& _
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)4 _! }" a5 p; j$ L, M- y1 P0 O  r2 T
set j; n% e' s9 j, J+ @7 l6 d
( j + 1)
1 W! d% ^8 E% A
]. T2 R  G& X/ y. Z: E
let k 3
# V8 M  I; V& M+ x/ Nlet power 04 M4 t7 s5 a3 s6 n% o8 T2 L" d
let local 0: [: u  b: \  D2 F- P
while [k <[trade-record-one-len] of myself]" L7 Z' f3 @' E  r
[
: G0 N* O( V3 b, l! O' r& }, m3 I2 c# Jset 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)
! N& S# K4 `  l8 A7 D4 L2 n1 hset k (k + 1)+ o3 b8 X; H  A$ G: e' H
]
6 n! V8 P  Y4 C% o) }' q5 s  Zset [local-reputation] of myself (local)0 b9 p2 b: w7 c
end
6 F2 |1 E2 }; P/ S' I, k9 ]
/ g9 n( m2 _2 ^! v! Kto update-neighbor-total7 u/ s3 o  I( s8 v/ i
" P- U$ t* U) J6 @
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- {% I$ Y2 i; H9 ]
/ |! k- L) U9 f7 j* F

- ~0 k6 k3 n9 x0 `8 @' ~# Mend
: F" k  O2 I3 F" n( \& k% B" t$ w$ U! f; k% W' z* [
to update-credibility-ijl
+ {& K7 [4 w. h2 ^, ^% `  s3 a* k: V# I, T1 O
;;
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。
- q# D" G5 }* G& r: C1 N2 L( Q2 `let l 0
" N5 S' M! i. |0 S# l# Uwhile[ l < people ]
2 X! m; w1 t4 Z* E9 A;;
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) A5 O$ ~: o: h: a$ t3 x4 j
[
2 w* g! _) s, Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ C3 `& w! r. W3 q* d! lif (trade-record-one-j-l-len > 3)
9 J1 F7 F4 {( e- @6 r[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
9 B) \- W8 z. `" ], q, ^& O! x( Dlet i 3* U2 M! m( _+ x3 Y0 l/ C
let sum-time 0* F1 Q9 L# z4 `
while[i < trade-record-one-len], Q7 z: o0 `% B" j' @% Z
[
/ ~9 U% Q- h8 _  j. J& j" e) ]set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* {5 d6 e9 t0 r9 {0 |
set i* Q5 K9 `" f5 q3 F* z4 o0 T5 M5 |; P( p, `
( i + 1)
; H7 R3 @6 f5 K! S' f4 n8 ^
]
* r- j3 V6 L  `/ g$ c, c' w# [, Nlet credibility-i-j-l 0
# a2 q# x+ h- w. Q) t* A;;i
评价(jjl的评价)' P- H/ V+ ]9 E" x. W
let j 3' {) I! J2 f# R$ _! }$ I& O
let k 4
  |' d8 N0 f" H* n$ D1 d2 w6 m# G! O* Qwhile[j < trade-record-one-len]
6 ~% x! E  L2 U9 C[
/ K. V& ?* Y6 G% Lwhile [((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
5 |+ F( ~$ \- N- Vset 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)
- y' |9 S4 M$ N2 c  ^: _+ c' ]7 q! {set j7 I6 S2 ^2 o8 z7 h! Q% L! B# K( F. P
( j + 1)

3 v/ I7 J; q, F% y* I2 H]
* n/ p' ~, F) A, H' B# J) ^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 ))( j. E) }7 g1 s7 q# f! L
% x; U. ]/ i( ?, a. }

% |7 \. H2 ~% f0 Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% ]0 v* W, s: @' q7 U8 D* f1 N;;
及时更新il的评价质量的评价
1 A5 Y/ h5 L( k% `9 xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& n) Y% x0 H6 }- R$ n) {set l (l + 1)
8 S4 F; \8 d' Z6 P# u1 H+ o! O]. h6 l( t( c  B$ h* I6 J( \
end) x3 L7 |7 j. \) k
& g  T2 a1 p& t* H& k$ G
to update-credibility-list
0 Z' v( I9 Q8 e/ G# Q$ c9 flet i 0
, v8 m6 h" Y+ A/ Z: a1 w% C( Fwhile[i < people]
* ]  n2 W& B; w1 a[# x* T$ b% J3 H
let j 05 b# J7 b, _+ d
let note 0/ l, N" b7 Y& b3 `, Y
let k 0( F4 D6 `, E! }; Z+ l
;;
计作出过评价的邻居节点的数目4 ]0 R6 c: }7 s5 _3 j; ]3 _" P
while[j < people]0 O! u; ~4 S4 x" H8 r- J  h4 B
[
2 K8 e  u! b3 Kif (item j( [credibility] of turtle (i + 1)) != -1)
0 l/ y) p2 f/ w' A/ ?;;
判断是否给本turtle的评价质量做出过评价的节点
+ p. Q3 E% K# G0 h5 K" q. j[set note (note + item j ([credibility]of turtle (i + 1)))
, e0 ]/ G* C# y- a( i: g! K6 G" D;;*(exp (-(people - 2)))/(people - 2))]

, u( M+ b5 @+ \$ [2 Lset k (k + 1)
  @+ g; k/ J9 i) h4 w1 n: S]
# e5 H% v$ B, R: d! `. T0 ]set j (j + 1)) B6 F- B/ M1 f, v! g4 G4 @1 }
]  _) p/ I6 c9 g( L" g& `
set note (note *(exp (- (1 / k)))/ k)
) L$ G7 F2 z5 x9 I* U; A" U3 Uset credibility-list (replace-item i credibility-list note)
2 n8 L! a% b- p  Iset i (i + 1)4 w$ x+ `3 V- {  x; f1 x
]# D# G$ Z8 p: Y7 Y' ]4 l
end: Q- e! c+ y9 k( J5 z

8 p" i3 b# t& R& gto update-global-reputation-list) O; w" w8 h4 q. m
let j 0
3 E) A7 ]; Z% u9 g$ i. Gwhile[j < people]
, ^: f' L3 y5 L' z* q[
& w/ P5 K! e% j; P9 X' Nlet new 0
1 I) Q* b6 B" p, \) e9 z- _" d' K;;
暂存新的一个全局声誉
9 M& K+ |9 }2 c( r& J# _let i 0( G/ j8 {  H4 C  A. x
let sum-money 0% a* p, g3 I) i( U, C
let credibility-money 0  e% l6 i& H8 C1 _
while [i < people]
% r' f/ j; B! k" ]7 [7 ?[
7 d; ?1 ?1 K" e, rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, ~. w) f) V  O  G% k+ J! B7 x% Oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 U' ]- b. ~, Y& Iset i (i + 1)
# r7 _+ g* h2 N7 m2 M+ |9 _4 i]
& K% f1 e1 I! w6 \2 _let k 0  k& t* ]6 K( L
let new1 0
+ T' q' [$ n9 Y2 p; V# {: p& V* Awhile [k < people]
' k! [  P8 C4 \% G/ E) L+ ^[. w' p' s' z5 F% d8 N8 P
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)' R0 o0 }1 R* p5 O  \: J  T
set k (k + 1)3 [2 r& k( f  Q1 U, v  M( {
]
& M7 l$ _3 X9 ^9 S$ W7 X! I! dset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 `0 K' H: ^; _0 ~% `, hset global-reputation-list (replace-item j global-reputation-list new)8 L& [5 c. \8 R/ ~7 S1 a' k
set j (j + 1)- u4 e  n- F- H8 L
]
) U- c+ y; |3 tend
* v  s' g9 e" [6 W6 F3 T+ C+ W9 ?+ S+ Y
0 {. ]0 E$ Y2 g2 S1 X- Z$ e

: K. i% G4 K# U4 J* }to get-color
% [. m" t2 d/ A% G
0 l5 @9 B2 s2 Q$ ~set color blue

5 h  m5 H: C# r2 R2 C6 `( ]end
, d" f* ?3 d5 t
% Z% g7 }. S5 w$ uto poll-class
$ _" [( W  L, bend
$ t# T" N2 c( z1 m2 H# `5 G
! j2 \& C2 n- Bto setup-plot1
# d/ Q9 K. A9 d( v; \2 p" y; g- ?0 @: X# t/ o+ Y. K
set-current-plot "Trends-of-Local-reputation"
# V8 f& d7 [+ i: `6 C: Z3 i
' H; z4 P0 j/ i1 U/ N% N; z
set-plot-x-range 0 xmax
& }1 j& C3 l8 y. B5 O0 j( [' K" k
: @1 B, Y+ v9 f' `6 l3 u1 U
set-plot-y-range 0.0 ymax
8 ~2 U- y% _8 n/ Y% j) V
end) G7 r9 d9 |  ]9 I8 y
- K. z& L. {3 l( s, S$ N5 L6 |
to setup-plot2
+ C* `2 {/ Z5 D& g- z* r% i
1 c6 T( c% `, ?  d% Y; y7 A9 oset-current-plot "Trends-of-global-reputation"
2 Q3 l5 n' P, h5 Q0 B

7 U$ {& _$ z; r% B5 [1 nset-plot-x-range 0 xmax

) y6 I3 v+ j) V- m  E
3 ?0 y0 \5 Q3 k1 }; F8 \set-plot-y-range 0.0 ymax
0 R. |( N3 G7 U' R
end
4 {" O3 `7 O6 c1 Y8 _- [' M- I; c7 ~; Y+ N6 O/ ?5 |
to setup-plot3: l: p+ _' D8 l2 v6 O/ R# q5 {

& l) z; P$ v! f- b1 sset-current-plot "Trends-of-credibility"

" z1 w' z/ W0 S4 ^. u7 H+ Q6 F& Y/ A, e' I. R2 Q6 C) i
set-plot-x-range 0 xmax
6 z2 d3 m5 G8 h6 Y9 [. s

! j& i' |3 V) L5 |set-plot-y-range 0.0 ymax

" Z8 o7 ~2 O# l9 D+ O- pend
1 {& \" D/ h( N: E1 ~, j) q6 J7 S6 {# Q/ }! Y; K! `
to do-plots( J1 a& B1 g( q
set-current-plot "Trends-of-Local-reputation"
8 K5 {1 X+ ~+ c1 F9 g; D0 Uset-current-plot-pen "Honest service"  a0 w, u# u% [
end. ^' w" Z# ]; Y2 V1 t; S% o
$ c) b0 D  h( E9 j: Y% K5 g
[ 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.( c  U" o1 P& z# h
* T- o& S6 g1 Z3 @/ R
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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