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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:$ E: ?4 i. @6 X5 E* T
to do-business
$ B9 I/ T: V  e7 x6 \( a rt random 360/ g, y, o. L( F* }! Y
fd 1" _4 n9 @. d! g! f1 q
ifelse(other turtles-here != nobody)[1 ~$ ?7 _; \3 e( b2 y7 J4 Z
   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.
* g) F! `# k6 h5 L% R! d& F' E   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + N4 e9 a2 H# a7 W3 q1 v3 m1 a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' a% P% ~; l1 c$ u. z! S3 d   set [trade-record-one-len] of self length [trade-record-one] of self4 ?; B$ u! I0 k0 s' i: U
   set trade-record-current( list (timer) (random money-upper-limit))
+ B7 J/ X0 P( P+ J6 q7 r5 g% {! L+ d; u5 g2 h: o/ l" E
问题的提示如下:
8 y3 s6 h& O# ^( ?' o' I3 C' R1 M. \9 k) n) I
error while turtle 50 running OF in procedure DO-BUSINESS5 D0 Y+ Q# @- F( }4 i$ {
  called by procedure GO* {* E# m4 P+ ?) @% d5 x, j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
" d6 T3 ?& y3 {$ U+ G+ r
(halted running of go)0 y, c8 n2 M2 O/ L& C" N
/ _8 g/ H( z. p* r
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) l# L" K! l/ \& E2 e/ g
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, g+ a5 `6 C' C8 a7 D( `) N
globals[6 f2 m5 ?2 K/ x8 }6 a
xmax
# ]/ E+ P, T. U& w& B* V" Aymax& O' f: g4 K1 o* q7 V# d
global-reputation-list  E8 h. B3 M# f" H* {: [

) _4 p* O* W* `;;
每一个turtle的全局声誉都存在此LIST
  k0 l" u, `+ ]credibility-list
  [! g5 Z+ |4 @6 V+ i;;
每一个turtle的评价可信度
) K& \7 W+ g' c7 A1 Phonest-service
/ e6 Q$ G. w" Y" Hunhonest-service. G4 }* O3 K  ^' v9 J
oscillation
; u( A1 j6 P2 V& trand-dynamic* X+ b0 J( R3 `% v# V2 _
]
0 u) z/ J; Y$ n2 ^1 {7 h1 }- U" L
+ W+ W+ x' A2 X  d* z3 dturtles-own[
+ v1 Z7 x! ~5 j# n) f& htrade-record-all
' S! ~0 `! L* o1 K  P/ u;;a list of lists,
trade-record-one组成0 \+ r8 h+ s5 b) Z4 G& f$ x" L
trade-record-one
7 Z9 a6 q- M: D" ^  t- j;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: x( @0 a, O) b' W+ N: g# k
: x4 ~/ {# O/ d, Y: F
;;[
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]]
" x6 G$ G% ]- `, l6 D/ z4 otrade-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]# t4 T' @: H) m$ ~1 t6 {
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( q6 E* q* L/ u: g2 n* Q
neighbor-total9 G$ E+ s  Y6 H. T9 f
;;
记录该turtle的邻居节点的数目# Q; a" V) i/ z' h$ U. {: @( w1 J
trade-time
% y. z3 u0 L6 @$ \2 G( q  G;;
当前发生交易的turtle的交易时间
" [$ P' g/ {* gappraise-give
6 `3 {( r8 ^+ N. x. J, r9 ~;;
当前发生交易时给出的评价7 w5 ?9 A7 w5 V
appraise-receive! G) \" X! f  u  \+ ~0 L3 C
;;
当前发生交易时收到的评价
* Y( p' X& s8 e8 g3 l8 ]$ H1 aappraise-time% W. N. _1 b; y. ^$ r8 B
;;
当前发生交易时的评价时间
9 M3 E+ z+ ]' c% e; I) Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ q9 {. C5 ]$ `& ^) htrade-times-total
8 H4 f$ h, j6 n9 D;;
与当前turtle的交易总次数/ }2 {) q) d" {  B. l
trade-money-total3 k  Y2 B/ O3 k& z" H5 n! |- m
;;
与当前turtle的交易总金额
% P7 S; j' ^4 E; }& r  Tlocal-reputation
- u8 m# l' V5 y6 h+ F% B2 Iglobal-reputation
- b* h8 H( w- n- _credibility
: u3 t; v4 O, K) y  C;;
评价可信度,每次交易后都需要更新) N4 U. t2 r: r# B6 C8 B/ n9 Y) v  u
credibility-all
9 a; o. A; L$ m% f;;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
" \5 M7 W2 _" X. v6 h3 T
* Y7 l5 R9 E8 r- ]" p;;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
" A" |; P& t" [- ecredibility-one/ V/ v4 E% ~0 D. L6 V" K1 c
;;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& t' w9 A- x: Q7 ~" X
global-proportion1 A& S; Q9 @  ?+ ]) v3 M3 `
customer
' z* y9 r' U" Ecustomer-no  e. `3 R- F9 u) X  `9 ~
trust-ok: ?" D2 x8 U  o$ m$ t
trade-record-one-len;;trade-record-one的长度
/ |0 F. Q: E% k6 s. ~& Q1 a, Y]" u4 K: e/ r$ R0 j0 l

! J0 l1 u+ {5 P- r$ O; P% `;;setup procedure
; P. S3 `6 D, D4 O0 u
* H# [& n6 Q3 v: }7 o& x3 oto setup1 J9 q9 t9 U$ S

- W7 z3 U% K% m& I! ~ca

! v; z9 G( o4 M7 O, i5 t) Q% j2 ~; M. X  u8 E* o& ~
initialize-settings

1 [$ K+ Z  V, _& ^; g) I# C. u- P( B& l! l' n5 b' `
crt people [setup-turtles]

/ R! T" k. K! H. I" X
% r4 K1 D9 d: W: B5 x% Treset-timer
* E3 K7 _/ ]9 a+ j0 H. ^

2 Z0 p7 D9 D( p0 Y0 e) v6 Xpoll-class

+ d+ v1 z) `) z+ V) `0 ?: M2 A; s
3 P' _3 h' o, k4 Y4 A, tsetup-plots
, W; b% c4 n8 O" ~) l5 v# N* h: ]* M, Y
; m" M  {) _: M. |
do-plots

- t- e* I$ `! W& P7 Xend2 U( l& F& r" Y
- w: v/ Q7 c. r+ S- k
to initialize-settings, D# {& m" r7 x7 B

; r4 J$ ]# X+ Q4 D" q/ i3 g) o1 oset global-reputation-list []
6 ^1 ^% Q* ~; S1 k- g

0 z8 s7 A+ p& Wset credibility-list n-values people [0.5]
( b6 M+ a3 z; i/ `: K* J
+ F1 m$ K' @& z) w+ @/ _
set honest-service 0

" b# {1 V) f7 K& d& _, u3 U) r# O9 O5 k
set unhonest-service 0

8 I3 G2 Z; O, ^3 x4 g. x
, d8 f. N( A# Bset oscillation 0
! E9 o2 v$ s# T1 @( m
! F) e2 D6 @5 `6 Z( t, b
set rand-dynamic 0
1 ~7 t& k/ t, \3 l( p
end
3 F- ^( R. q9 s  h6 j# P9 |, m, {  m" N2 ^, l! g. ]% O3 k7 M
to setup-turtles * q3 S3 c' Z+ ~4 A# h- w
set shape "person"2 w8 q; _* n3 `1 @
setxy random-xcor random-ycor
" g6 _- G# j3 I6 r8 [set trade-record-one []
( x' f( `9 P( u

9 s0 Z! a$ f" @4 K2 qset trade-record-all n-values people [(list (? + 1) 0 0)] $ w, a1 t! E& M8 P7 Z
/ G, F& [4 [2 x* _
set trade-record-current []4 h( }# ~8 X+ o. m) \2 W
set credibility-receive []
. o! O1 }$ h+ x5 r0 x) Nset local-reputation 0.5
: Q9 @8 y' |' i! `set neighbor-total 0
  y3 W2 ?. K  R6 fset trade-times-total 0
/ T. |' i; p5 x7 m8 h# mset trade-money-total 0
/ ]" W$ S1 k. e9 z% E9 R. Z, Y  Mset customer nobody$ k$ o2 y1 [' H1 q9 c( ^6 x! W2 Z+ \
set credibility-all n-values people [creat-credibility]
  z, j6 e8 V/ |+ R7 t1 xset credibility n-values people [-1]- E  W# J1 S4 Z: K( h  Y) X
get-color
* p7 p$ E+ \& o: \; A- c
3 q+ B/ W  q( ^8 ^0 M! Y/ n, {
end: n2 X: ^, }" x/ V- D+ c! [8 x
6 a: x* i3 `" ?& H9 v
to-report creat-credibility
8 b; q1 {6 u2 {( {& Areport n-values people [0.5]. ?0 l7 F6 Y& s3 X+ |6 K2 Z
end
$ v$ w& l# t* `* Y' l5 n- ^/ J5 @% L% |4 G
to setup-plots
# a, z# Z7 _6 }& z/ }/ q; ?
5 Q$ _  O( x, s' Q7 L; \set xmax 30
2 a7 w8 T  C" v2 G4 O

9 N) `4 r7 s! f' f7 ^/ O7 vset ymax 1.0
8 d4 P7 M, z% V; v

' b  J# L3 w7 a! |# lclear-all-plots
' ~; Z2 e) g/ ~+ J* Y

2 X& u3 c: ?% k; h) msetup-plot1
2 N$ a- h. }5 n) r: J3 T. v

) j7 ?4 u! ?. W2 |# s8 Nsetup-plot2
' C9 q; D3 u. {2 w% U0 f* @- X' |
# ^9 k6 }5 }: @! v- n
setup-plot3

' P7 f! g5 y5 C! {! {end
& T4 T' n0 U# e2 Q9 ?8 f
* x- _0 z; m" N; m8 J! e! d;;run time procedures! _( v7 n7 d1 M; q
6 _1 b2 W- Q1 r) J8 U
to go
5 F0 A0 `# q3 E; V& K7 D3 Z, l  m5 T7 v; ^: o$ ~
ask turtles [do-business]

8 n$ A& f3 K6 l3 \; P* L! tend
- L7 b" h) i) p% U3 T" g( I. o# C  o$ F+ X' y, A
to do-business
6 i. ]$ N8 S% k3 T
+ z& K3 b, O7 A9 _& X2 z' r! ?# h$ t
/ J( `5 n, u# K, ]5 N
rt random 360
9 q, ~* ~: k* W$ C5 ?

! T& N" R/ ^" K/ ^& g5 y+ Gfd 1

/ k! [4 x6 T2 v) y" i' D5 W1 P( t
0 Z7 l6 K/ a2 ?- Z) m$ x" cifelse(other turtles-here != nobody)[

* r1 t1 ~) r$ r/ y, H9 \1 d- O8 n- z/ J6 K* F6 ~3 a9 S
set customer one-of other turtles-here

9 U, i2 O* ~# i4 o! z5 K3 C" Q- j. h" L9 r6 M# V2 E7 z
;; set [customer] of customer myself
; f9 H% Y; A) {- z2 H6 U
" C0 f; o; h  S4 ^- {' }
set [trade-record-one] of self item (([who] of customer) - 1)
9 f  ?  _0 {( E9 F+ C% `! R[trade-record-all]of self
6 p: p, T) Q% B;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" r; {" o& ~" S) S0 w7 k6 _0 o
9 \) i8 w5 m5 q/ e6 F+ M
set [trade-record-one] of customer item (([who] of self) - 1)2 y5 D& E7 Q$ P$ s  m7 d( x, j
[trade-record-all]of customer

9 i6 U  ^/ x" _2 G; y+ x  }* L% _7 t* T9 O
set [trade-record-one-len] of self length [trade-record-one] of self
) r' R# D! B! f/ o4 G
2 ]/ ~; j" q5 P; t* J' s
set trade-record-current( list (timer) (random money-upper-limit))

, c1 n: q5 k$ A9 ^/ o0 ~0 G+ L' j, v5 y9 j  C$ v: B
ask self [do-trust]8 H  g2 y3 `, u
;;
先求ij的信任度
& x" I* U' o9 y) O) I' h9 b
- e3 H/ H* Y5 R6 R" Bif ([trust-ok] of self)
8 {# @5 Z+ q0 }5 V;;
根据ij的信任度来决定是否与j进行交易[
- B4 f0 N4 z" ]& Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; ^* T* e# I; f) {% G
0 A1 Y$ E' s! ^0 t4 ^[
5 }1 y7 o# z- K7 I% H

5 d  y; O2 z' J" x; r/ z4 Ndo-trade
) l0 J% X9 {  u2 C" N. F1 v$ _

* k$ m3 R3 ?1 Z6 z' supdate-credibility-ijl
" |/ }; Z/ y+ ?. p2 S
) @: J% D: s5 X
update-credibility-list
- w" _) _5 H& V% ~: B4 {0 E! G4 A" [

+ t' c- M5 @7 K. U+ r- o
: Q0 M8 i1 J4 s: [update-global-reputation-list
3 a( S' Q" i% d

) f( N9 [, a9 o( L$ M( }+ n& wpoll-class
. M7 n2 j. g% L& h; @! |% M3 _
4 Z- u& T( t5 m
get-color

% i+ r: O5 f9 Z% f4 u# z
" [3 S3 V2 ^! f, R( ?! e]]& D( r3 B! e5 r! j

* H+ n5 U5 C9 R3 _6 l. c# \;;
如果所得的信任度满足条件,则进行交易
3 K$ d+ y$ f0 w4 v4 o
$ N( x+ r; X/ t: c9 O5 \1 M[

  _# b0 O7 c: ^, D+ |4 {
' |% q* F3 |4 c6 Qrt random 360
+ q0 f1 h4 ~- H. p$ v

, c- A% \- n+ P$ P; h, D# y9 s  Afd 1
2 t+ Y! W0 `* Y: y2 ]' @. E

9 E1 S# v0 U" }9 Y, B]
: v* z8 M6 A% C; `4 s6 d. B
1 q+ X# ^6 q9 L
end

& T4 C( e" a  ~& P  W) L' m8 j0 d
& m3 b1 i9 Z, [  D& G" n( ^to do-trust
2 I. v9 M/ T- }( x4 L0 mset trust-ok False
5 {+ B/ p" A9 B+ `7 O3 [- x# a* t  C
( ~. r4 h7 Y3 l2 E2 b. ?
let max-trade-times 0
$ U( U( n( d# w# N/ `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 |9 {0 o4 {, Y# N5 \let max-trade-money 0
! Y$ a# o$ G$ P5 \" g6 e) Q- X2 jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# Q4 R1 {" }5 b, \1 ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, L6 T4 c  a/ J, l1 o! R# h  U2 ]- `. J& x7 O9 w
  ~0 e: T! \) ~6 ]  r+ L1 }
get-global-proportion
) W! v% t* J: E/ F& glet trust-value
* t& C; c4 W* r- J3 Y) o9 j1 P3 nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, v4 h0 I# b. Q+ K
if(trust-value > trade-trust-value)1 o8 R3 ^, g! |; S6 T1 a- V/ L
[set trust-ok true]' `, f; I% f8 V- B' h
end
. t, a  t- P4 w. L# a2 P
5 f( [) b3 S! _$ n; v6 cto get-global-proportion- I+ w+ O' d7 _& g  m3 A6 N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  f1 I6 I5 {; a
[set global-proportion 0]0 o* Q/ ^- L6 ^& M! g
[let i 0
" o0 ]; T/ a6 a% |" p7 ilet sum-money 02 R8 N) [! J( e# @. H, b$ }
while[ i < people]
2 x& b9 n3 |; `[
# S* `& X2 @; Bif( length (item i3 O% J! Q1 B; q4 I1 U
[trade-record-all] of customer) > 3 )
% E: i, A, j9 c# G' S! i
[
# b: I- L8 i$ A2 {8 @1 ]set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 f% L$ B* ~  }: a
]. i$ J0 V  ], W3 {6 t
]1 V3 j4 m+ b- O
let j 0
& C7 d* z+ ^4 A- _9 Q$ ^1 N4 Plet note 0
5 S& h- T9 T7 S6 Gwhile[ j < people]6 s8 U3 H5 L4 X$ j3 Q
[8 h2 L: h0 J$ N  y9 m: _5 ~3 I6 m, R# L
if( length (item i
; ]* B, t% z. o' R" O/ q[trade-record-all] of customer) > 3 )

+ _+ R+ M3 }1 x& }( U1 Y0 d[
' }: ]( f( L% N+ D& Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* D  B6 r. G, ^/ X% r- ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 O2 {$ ^! c- G6 _. |) ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 ~4 B& ?. q7 G! ^]
! d' C6 k( t# n6 e$ F]0 q6 U+ V3 L/ {' v& s+ Z" K
set global-proportion note% N3 r& z/ D/ Y% o/ o9 m# a
]
3 K" B7 c+ Z' S6 K% \7 gend
& K# I: _/ j) S, O- G9 j+ a: L
1 R0 a1 e5 r) @& u: fto do-trade
( V! z3 F+ R+ y! f- w- J' `  I;;
这个过程实际上是给双方作出评价的过程$ y7 _! C7 F+ Z8 I# B( ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ u0 L/ x6 q# G) \: d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 W5 x4 E+ K9 q2 ~0 |- q. ^set trade-record-current lput(timer) trade-record-current
; N0 q0 _6 b5 ^;;
评价时间3 ^& L# ^/ T( N! e+ N
ask myself [
: U# a* X5 I! H' F) d3 E8 aupdate-local-reputation
8 e6 R1 D% Y! T3 u0 F! Bset trade-record-current lput([local-reputation] of myself) trade-record-current' W: m' b0 P$ E' P& E
]
& s, V1 N/ v# ?, i- ]0 @set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; ?9 y7 h1 N3 i;;
将此次交易的记录加入到trade-record-one
' d. Y  n! y* B- e2 H% E! Q0 Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 v/ p5 {# h4 _5 f! tlet note (item 2 trade-record-current )8 s; D& w: x* g" c& z& m$ `
set trade-record-current
) `* N/ [+ Z* _5 E' R5 L(replace-item 2 trade-record-current (item 3 trade-record-current))
: v# [# Q# n4 @) Y
set trade-record-current( \; S2 O$ y8 D( N
(replace-item 3 trade-record-current note)8 B- V1 ^2 u+ X

% C. [+ T- ]6 ~8 r5 M* w
+ B# E' ^3 O6 ^6 ^7 I
ask customer [/ A% {- Z8 \. I& L
update-local-reputation- t+ z. L: Z( V' S. w
set trade-record-current
4 t, h# L$ ~% @- Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ Y! V: X5 V$ S) R9 {]- E1 x; U/ E3 }  O
, T0 w! F- K9 r* V' q2 |9 |

1 y) G% y/ m6 c; X% a+ D: Pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
) w1 U! U) D& U  n: \$ X% Q& p. x* B4 s

( _* v, t" V7 L, Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; b7 j, x5 k3 ^* X% }2 X;;
将此次交易的记录加入到customertrade-record-all
: }7 e4 d: M- k! [4 ?end
( G  ?8 h1 m8 ~, ~4 _
2 E: k& Q9 v. @& P. o8 B4 }  t5 Kto update-local-reputation
) b, c3 f( h7 V" D  ]set [trade-record-one-len] of myself length [trade-record-one] of myself% W% D" s) f% r9 y' X; c* q

8 S: z. H. C" v8 i) q8 {) D# \
$ j3 K9 U$ r2 Y& D  t;;if [trade-record-one-len] of myself > 3
) y9 t' P' j5 `
update-neighbor-total9 |) W+ \4 _  Y8 q) s0 M6 ^
;;
更新邻居节点的数目,在此进行. A1 ]+ |' h8 O& t5 G7 g
let i 3# H" ?5 J3 G' W; s& w# `( L7 ?
let sum-time 0$ ?- D/ c7 @; M# l% _3 A! _
while[i < [trade-record-one-len] of myself]- [; B9 ?6 ?7 l* h0 G
[' m% ^9 F7 B2 k+ ^: K/ D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. P8 A) a0 I0 Y  X3 nset i
4 g3 Y2 V/ W1 D4 O4 E, n" E( i + 1)

5 b- B# O% U( o]
: G; e. m# B+ g# t4 ^; jlet j 3* y( i; E: d4 m: G- m' I( l# [* c3 k
let sum-money 0
. C. Z: ~& ?" Z7 ]8 awhile[j < [trade-record-one-len] of myself]3 F6 h$ j1 w0 N" E4 Y8 l
[
. W  T( b  {" {% kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" I* M4 g# Q* A( S1 G1 H
set j
' \% {$ Q$ G' s8 e- ^( j + 1)
" L' _7 I/ }6 F
]
! i* Z' j9 B, F+ f/ y7 Dlet k 3
* S' ^$ M$ u1 h4 X' Qlet power 0
' F0 h3 E; q; rlet local 0
9 Q3 c/ E6 |# U/ vwhile [k <[trade-record-one-len] of myself]
" v4 \; p- W$ \1 N# N9 t) F[9 W5 z" q2 K0 ]/ g. S+ U* Z7 Y
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) ( G" O: p+ J! b7 A6 u! v% [# ?
set k (k + 1)) v0 s. }. D' U
]
" k/ G3 m# _7 G) T. E- _set [local-reputation] of myself (local)
9 ?! d# S# v( L! hend& `. [8 Y7 B' B4 z

6 d) X4 g5 Z3 F" ^8 [- Wto update-neighbor-total+ b$ w; w- @* A( k" p$ A

6 G8 _# v8 d6 _) c" }& rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 b5 H: P7 Z5 k  x0 ]& s+ ^& ~6 E

1 O* @9 d4 q2 p: W5 j+ Y* z) vend) s6 b* \$ g( A. t3 E

0 _# H" B9 a# Nto update-credibility-ijl # q* s/ p9 E, w% p2 R: c

, p$ x* {  x) D2 ];;
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。
6 S- h% q9 n8 X$ q, x' f6 X/ {let l 04 q% X: n# V) d0 O( z0 Y1 H$ D
while[ l < people ]
+ d5 {# B5 ~3 \' L9 t;;
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
0 n( l" q& O  U: T4 ^[7 L2 Z0 J- z$ E7 Z; E; o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" Y- H. p, u& L$ cif (trade-record-one-j-l-len > 3)4 Q# ]: h6 X) Q& s  D7 x: N& j) 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
" N8 ~& g0 U  R; z7 wlet i 33 W# P( \% p* K4 \& E
let sum-time 0* U: J" A, Y  `% B2 b2 [
while[i < trade-record-one-len]
$ i4 t$ Q3 @* C2 n" S, Y: h! j8 ~[0 `! B  O  P6 q; H4 M: u% h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, h. ~7 Z1 V; z0 A# M. ]0 z. yset i
/ g3 E- H4 o( P+ S( i + 1)
  v4 c, g3 k" O6 b
]4 D& P" S& T2 n( _- w7 \9 y
let credibility-i-j-l 0
. o* e+ G5 K: j; d. v) Y5 i;;i
评价(jjl的评价)- G3 y" e* E% J0 z
let j 3  ]& x1 w$ q& @0 T; h5 \
let k 4
" A+ M5 l+ B; d' ~9 |while[j < trade-record-one-len]
$ w0 t; V' g. r[
6 r; J$ R1 D9 b# Q, V# H4 swhile [((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1 `: [% f  s2 z9 y+ o6 Q
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)
+ q) E( c- D% {! p% {2 t8 E! Rset j
! h. ~' N4 J. l" A8 g0 B( j + 1)
, ~- `( g' \& B  R. y; Q" Q: L/ B8 y
]
6 V. m) W- u8 kset [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))+ A) m/ a! E, S- W/ F6 W
- D- l1 ^. a; ]! H$ n" @
8 b9 _* D# b1 R8 I8 V, Q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 V  s9 k" n0 ?- b# L
;;
及时更新il的评价质量的评价6 j4 w: L6 H/ I/ r; P0 X$ N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! d: m' z3 G3 e% i' D) A0 r2 D
set l (l + 1)
: }  D4 ^$ ]3 |' V$ r]! p# u/ b3 K: }4 n& e- i; s2 a
end/ Q, X) S- S/ s0 S+ F& {: i, R
0 j  R+ |% ]; Q6 c" W3 j2 g/ v
to update-credibility-list' K9 J: S7 n, L1 k( F; r+ H
let i 0
. E  i' H' ~! Wwhile[i < people]
7 _! F/ U7 k1 }- ~5 g/ h[1 R  t4 j+ t" w$ d3 P/ h) c3 `
let j 0. g+ A  _. g/ _
let note 0/ P# k$ H# {, M6 Z% A0 R
let k 04 z! G/ V0 q2 u0 Q% P3 Y# V/ b
;;
计作出过评价的邻居节点的数目. D( L; P- N5 @
while[j < people]
' ~$ q* `2 e, U  j/ k; o8 g[
: }2 h/ J! ^( E- G! Y6 z& _: j( pif (item j( [credibility] of turtle (i + 1)) != -1)
, E0 _" C2 r- a3 F2 H;;
判断是否给本turtle的评价质量做出过评价的节点
- A  G" ~! o  n[set note (note + item j ([credibility]of turtle (i + 1)))
! z/ z) H* ?  D: N$ r6 @2 d/ V;;*(exp (-(people - 2)))/(people - 2))]
/ p& b/ O' {7 M; s: r
set k (k + 1)
  _% j# S. `7 i/ @3 X' E]
/ @! R" ]" A/ E2 ?4 f) t3 Eset j (j + 1)
9 e9 z0 a# t, f8 h]5 a; s) [8 u; i
set note (note *(exp (- (1 / k)))/ k)& A* v+ p4 S4 R% x) j
set credibility-list (replace-item i credibility-list note); b) T) c- ]2 ~4 Y8 c, H
set i (i + 1)1 m1 f/ V# O2 F0 N
]
: Z3 [5 \4 H) E4 T8 wend
2 K( P% ^- G' Y7 b. }
0 J6 k: T3 G- R3 v+ Q- f7 w; ?! F$ o% Rto update-global-reputation-list6 m& y) Z6 s3 n4 m: s) z: ~
let j 0
. V# u' }2 P; F6 A( P2 D5 C. A" p% Ywhile[j < people]" D# Q3 U1 E1 S  `
[6 a. M: A+ H, T, I* z$ N4 E
let new 0
, ]6 v6 l! q2 o2 j3 [5 ?; A5 Y;;
暂存新的一个全局声誉: i! u, L+ V  C: F
let i 0
! }* h- z( F7 x* G& \$ Mlet sum-money 08 P1 g: w) B  _$ j0 Z  p6 B0 p
let credibility-money 0! }& S8 s+ y' {( m& s
while [i < people]
3 T& f9 ~6 i  C% [. X# w; l[
9 ^; y; {' t# fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ f7 k( o. ~0 i/ M% p" {  t) }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 p! `; d3 B: h3 Xset i (i + 1)
1 B6 o9 q+ |( u( l3 q! R% |]
6 J, q/ }# G7 ~) m9 p! Hlet k 0; y1 R) k% F& p& F. S, g
let new1 0
- M6 U4 D# B8 I1 A' K) Uwhile [k < people]
3 u; q# d8 I- |9 ^7 g7 c- O[
; Y  t5 I! |. K% N9 W3 lset 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)* h) s& j4 s. Z$ G* R
set k (k + 1)
3 _7 {9 r/ r$ H; j6 l0 ]]- d! K/ J  b2 {9 M7 ]* ?
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" f8 ?% i0 [% {0 A* t. Zset global-reputation-list (replace-item j global-reputation-list new)
2 _  h0 u$ o+ z0 u9 M5 P6 @5 |( Bset j (j + 1)
. v0 Q) K& y* [$ ?2 N# p" s. y]9 U( t! n! T, b; Y+ k
end
: i) g7 a; Z$ f: Y/ F/ W
7 e5 m& r( I6 H" x- s$ F
1 r/ g" {" H1 k' c  p9 d) i  M- I  G) n. @3 E* K4 ?
to get-color; S: Z+ P, ^" D

/ y' `' M" G* U1 Yset color blue
5 x/ i( |$ P$ ?. R/ h
end
7 z4 Q! U! Y; y9 z& Q, g: o, d( q3 w1 W4 r
to poll-class
3 I+ U* T1 g! x( b: tend1 Z0 |& C# [& e0 {

2 k% b& [- K1 w! ato setup-plot14 C! a# k4 J% W2 M; @- h$ h2 u

$ r, d8 M6 t* }/ lset-current-plot "Trends-of-Local-reputation"
) D; Y) @! n' F5 Y' [9 r# q
+ R' y3 S2 T* F3 w: A4 M9 e5 A
set-plot-x-range 0 xmax
& _$ h7 A: o- v8 o

' X9 z' ?/ f  X& M% Y/ v4 Qset-plot-y-range 0.0 ymax

: g) v+ M, W# o, s& t$ c' rend; M6 A& [6 q9 ?  Y* a
  c9 L7 H- z8 ^) g( o9 e
to setup-plot2/ F4 D+ S0 ~+ G2 S& B
9 N) ?8 P9 z' X- |+ ?
set-current-plot "Trends-of-global-reputation"
" H4 F9 E) M# U8 g% I

& W+ `  ~5 z. ^8 Q( A" eset-plot-x-range 0 xmax

* R4 o/ K# ~  A7 u, T  j1 ~0 `1 o$ }9 I7 R% q
set-plot-y-range 0.0 ymax
8 ]6 ?: o. K" A. g" W
end; G. l$ {# P7 W1 v) X3 x" N
" c7 N4 m/ Q/ s* e+ c) r; q! ?6 Y
to setup-plot3" F9 L2 a6 N  y! e+ J5 F
' o8 s+ y5 ]7 n( r/ g8 ?* X
set-current-plot "Trends-of-credibility"

# W% E8 j& r9 x9 I' Q) u+ L% ^# Z8 Z& U
set-plot-x-range 0 xmax
$ ]" }' n0 O* H1 i* e3 g9 M

" p% ?: l6 j" b- l; mset-plot-y-range 0.0 ymax
) e5 [/ x. d; o* e; W
end3 m  E; Q% _/ Z- ]

1 n; m, [% G6 Q# bto do-plots  S3 J+ I  U( y% G( E
set-current-plot "Trends-of-Local-reputation"
. l0 [, _9 v& f& `* |7 Dset-current-plot-pen "Honest service"4 I- b" O+ T! D1 e5 B7 Y
end
1 t, a4 {& ^1 b4 R8 F& `( P8 A* q! w8 W+ ?: D& G# e
[ 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.3 J- @( f, W/ t% ?7 Q9 L# W

% M/ _7 i! e' C, H1 x' H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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