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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:
) P* R6 y  G, W. S4 m4 cto do-business
" E* D4 s* U( W% F rt random 360
% @& E7 C3 m4 e* Y fd 13 S6 ~% ]: N/ q7 L' @
ifelse(other turtles-here != nobody)[
. A. @0 U3 Q: i1 v9 N8 {, S   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.
* T6 ~7 e+ W* C  u4 P5 j$ w9 O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 s$ S4 a; o) w+ S4 j3 A  ?; i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 m  X8 R" P9 R   set [trade-record-one-len] of self length [trade-record-one] of self' E; z( a% L  d' x8 O
   set trade-record-current( list (timer) (random money-upper-limit)). H+ |! o' h! T+ d4 D

2 c) l8 h; S8 l; R问题的提示如下:6 t  P2 K* i2 E3 r7 A5 U
7 }& T4 `- A3 v. j( X! h
error while turtle 50 running OF in procedure DO-BUSINESS. a6 l. h6 z$ H% q( ^) }
  called by procedure GO
; l6 [# e! R2 Y. oOF expected input to be a turtle agentset or turtle but got NOBODY instead.
! c7 F4 r0 ^% J9 j
(halted running of go)' J% c; |0 o$ \& t4 v
/ h6 O( ^8 b# W: s0 _( w. 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~~6 |; Q5 d- C, m/ P( `% f
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
% i& F5 K, O) J# c9 ]  ]4 V! [& r4 sglobals[7 P" F4 Z. z, T
xmax$ ~7 s$ V6 [" ]3 H& P
ymax
0 @: }4 ~$ H! m" p8 i1 w0 Mglobal-reputation-list$ e+ _5 t0 H! `
) y6 W7 B4 _4 @
;;
每一个turtle的全局声誉都存在此LIST; e3 s' p' M' c& Y9 j# d
credibility-list- O! @. m  t4 W; y
;;
每一个turtle的评价可信度% O* Z1 G' a7 }7 ]8 s5 `" a
honest-service
1 Y4 |3 x7 l! e  e3 sunhonest-service4 w0 `0 J3 F- a5 T* r
oscillation
! J: D2 E0 U2 yrand-dynamic7 ^5 h) Y! m! s: q
]" h% N+ O# }  R( @" x$ q6 B' Y

2 x* I2 q- E' q6 ^# ]2 m2 n& E# {9 ]turtles-own[
( a4 [) M: @: Q1 C6 v5 ~) ptrade-record-all
; [5 [- Q# Z$ d" C4 R0 z  e3 I;;a list of lists,
trade-record-one组成
0 \0 i; Z) e& @" ?' Ztrade-record-one
( t9 I3 v+ r" O: h* c7 };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 o' \& D& ~" b  z
0 k1 [6 }  R$ @) ?
;;[
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]]" o  |; V: W! g" J8 @+ Q$ @8 h) w
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]0 ]% w- |3 Q9 \+ \0 N
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+ x! H$ ]$ k' {* O
neighbor-total, p" `* z# m( r) [
;;
记录该turtle的邻居节点的数目
9 k1 t" m- }# P" O& [trade-time
' {8 a8 W  r" {% }2 p  i8 w4 j;;
当前发生交易的turtle的交易时间5 H$ X# n8 t6 U# b0 N; ]% J
appraise-give
# B9 V8 F, v- m: ^, U/ d1 P- F;;
当前发生交易时给出的评价
: m" U& H5 S& p- c. Sappraise-receive
0 W8 w# G7 r0 q5 p7 t/ M;;
当前发生交易时收到的评价9 C4 ~: u' m8 O, ?! g
appraise-time$ L& `) d8 n8 c: V+ x. I
;;
当前发生交易时的评价时间
& J3 J3 J4 G5 |local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 n  `% C  r) ]9 J0 j0 C0 \. W7 c
trade-times-total
/ p2 c6 Z2 S4 S6 O1 l% h, G;;
与当前turtle的交易总次数. w- G7 K( h  d8 C, Q
trade-money-total; }' @8 g7 b& U' t3 }6 T, X/ c3 A
;;
与当前turtle的交易总金额, B. T' Q' g* _# t" [2 E% U
local-reputation: Z' o6 y) R  B" Y
global-reputation: z( n4 D( Z" }3 s
credibility
! P" ?, u9 _3 S8 T;;
评价可信度,每次交易后都需要更新
+ G6 C' n0 M6 scredibility-all  E2 w# c" n9 W7 I  l
;;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# y( y, r2 @( Z) V3 U& _
0 _) j9 H! c  }) m1 Z
;;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  K- l3 Y9 r: \6 D( k; r  U! F5 O
credibility-one
: h- i3 R) U0 X( p;;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: k7 y7 l7 s% q* v2 j* w4 \: l2 v9 i
global-proportion
4 d$ `4 \- j. a. O) G7 ]  o* dcustomer
# x7 Z  g- r. j: Pcustomer-no9 M' G! d( b" b
trust-ok
( d1 f& [0 E( _trade-record-one-len;;trade-record-one的长度
" H. A( x  O- B) |1 \]
/ w) b7 M/ }8 `" J
: i0 m/ e1 M0 F" L7 C2 r( D;;setup procedure  m# b0 a) g  F; A! J. D' f

% W& E; @# L+ ?to setup
4 t/ L5 {+ O: n) d6 n& D
( _; ?, i0 x( K3 a9 a% l& Pca
* l$ L" y% Y* t8 m# ?$ B" H# d

- }8 }, W$ f& i! F% C- ~( Linitialize-settings
1 E% H! R- C7 ]  t( x# U
4 L+ l8 u7 }9 k* C7 d& X/ [+ u- V
crt people [setup-turtles]
+ P7 Z- i2 E" l
/ t# M& H" E3 _
reset-timer

+ z( j3 W  q# B, k, j& w4 j4 f# D) S" u$ m3 s* ~2 n1 ]; i% @
poll-class
: e4 P6 }1 y' U; ~

/ m6 h0 U2 @, Rsetup-plots
  O, U6 f2 }5 y/ N$ S4 u6 T3 Y

: h8 J% h. f) B, ~; v  P8 Hdo-plots

. y, l, x2 G  E6 {9 C3 ]7 q5 x2 hend% c  E5 p9 i5 R( r7 X- e8 h

+ o" O8 p, a' F2 ?8 s2 S! N( z+ pto initialize-settings! |, F, V9 p; u
! {1 e. f, A8 h2 ~: N( j
set global-reputation-list []

& J/ w6 f3 k' g) y; D4 }: p# x& c2 T0 n5 e* b
set credibility-list n-values people [0.5]

) U) C+ r  L: d# _- z& E
. V9 u( O1 j* N- k9 Y: zset honest-service 0
0 j4 d4 {* E9 ]& P1 a% V! z
6 F! {) G4 [* T! ?
set unhonest-service 0
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* I0 N) F0 Z; M" J% O& Q( `
set oscillation 0

0 _: a) n# ]5 N" W9 [' O; |) h8 S& b, ?* \" P
set rand-dynamic 0
  ]% |0 v, u! C9 k) V/ u
end& w0 m0 q( B; Y% P. h2 w
9 s- S  r5 \9 C7 `' U
to setup-turtles * z& d1 h, P& }: t( m7 X2 q
set shape "person"* W: M8 {( T! x. }6 r2 e. Y
setxy random-xcor random-ycor5 ]$ b: ^: I4 m1 j5 Z
set trade-record-one []
& _' T4 K4 P: G. a9 H, ^

+ a( f" a3 v0 K2 r/ f* kset trade-record-all n-values people [(list (? + 1) 0 0)] 1 U4 K* d. f$ |3 p0 g0 B

7 [; r4 q7 k" Z( W  Z$ pset trade-record-current []' l! D6 c- T9 _1 T+ q) e8 ]
set credibility-receive []
6 _8 s: m/ h6 x. zset local-reputation 0.5
1 q, I0 k; L* S- `5 o- I8 U* lset neighbor-total 0
0 y9 d0 u% n9 P8 ]; [) Y1 iset trade-times-total 0: c& I9 x8 [1 H* C7 i. X
set trade-money-total 0- w2 s& T; N& V5 c
set customer nobody
# x9 q9 G0 c9 n5 F3 a8 j* D+ Iset credibility-all n-values people [creat-credibility]' J, T3 E+ X: R6 P0 I
set credibility n-values people [-1]: d7 p, e1 `7 E( F( B
get-color
, g# e8 T/ M6 Z# c! ~

( R! n/ i/ A5 `2 Mend# ~! S2 R& T9 b- Q3 R$ c

+ m$ f9 j" |% R* q6 |4 R, m2 Pto-report creat-credibility0 w- m0 J0 j6 a9 C/ [9 b: j$ P* v
report n-values people [0.5]
9 i- `. D- X" Z& [* R  kend2 c! r( a* L2 T/ Z

! V! M4 L/ i2 }/ m9 k: i; Tto setup-plots/ E2 _! U# t" \  S8 h

( D6 \2 n5 n2 l) ]- f0 d! ]set xmax 30

  @' V8 _5 Q3 H; q6 b5 U2 Q- Y2 O5 I% }9 v1 x8 x
set ymax 1.0

' q/ R2 B$ D* z& _
) ~  G% C+ }! Fclear-all-plots
+ g/ s+ C% k0 O: Z

) `" G% m* \5 f/ M3 Y# o0 ysetup-plot1
4 l; a$ J$ s# A; K$ }5 G

" ~1 p- R$ K8 Ssetup-plot2

) q$ l( D  ]4 {( H5 {  Y% L
  e% W% x0 r1 Y) A+ Y5 Z3 {setup-plot3

% Q5 L& W) T! B+ i) S/ gend
8 _9 ~9 z1 J5 s% h7 I+ D( f$ @. @; w: o: k: g
;;run time procedures; b, K% g+ g, ~) d
* N" J3 b  q% j* g5 W
to go
6 I) b% y* t6 Q! u# M' C; o
5 n3 l8 ~" N0 uask turtles [do-business]
' |% [0 {% K9 z
end0 S, H; T) q! _* U' n* f

6 S6 }- W; I1 r- bto do-business   O2 h1 _0 O5 }2 T  |: N  M
0 ]: B$ w# @/ D' O, d& L+ K2 g
& o! G# t, P+ Y
rt random 360

( b: C+ G6 }8 D+ @
, |- y" c( P0 H- ~fd 1
/ \+ o0 N; [3 v
) E( N1 \* B6 w0 K9 x& K' D
ifelse(other turtles-here != nobody)[
; s( ?* X2 ]! J8 R! f' a

8 m4 L8 N+ J4 u$ r  nset customer one-of other turtles-here

0 P2 e, X. W; _  l% m$ I" P$ |$ g# Q& t# s
;; set [customer] of customer myself

6 g& E  p( H: x2 t( @% F4 o% ]9 ]4 z3 k2 V3 ^2 `
set [trade-record-one] of self item (([who] of customer) - 1)
$ S, b4 F4 Q  p- t- r[trade-record-all]of self6 x9 M# A! }7 A% w
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 l$ M4 }  s' B5 c
. M0 N3 k1 ]4 S: h7 Iset [trade-record-one] of customer item (([who] of self) - 1)
7 Z& V- a6 b. ][trade-record-all]of customer

2 @7 H3 Z* Q/ A  T  J6 e
+ o! M7 [7 s1 U' e; C: Wset [trade-record-one-len] of self length [trade-record-one] of self
" \+ a! k. v0 v1 @* c, {$ t1 k

8 {6 y  p, S8 d* L6 x0 j+ S3 S& Rset trade-record-current( list (timer) (random money-upper-limit))
0 |# ?; ^# J2 U) v3 J- e
0 C& [; M/ c: d& F. y: O
ask self [do-trust]9 ~! j+ n: W2 h# W5 L3 S9 ]3 B: ]
;;
先求ij的信任度  `- @1 x; _2 n% a- P5 r

" p, y7 Z2 Z! e. ~& D5 i0 uif ([trust-ok] of self)
+ {4 p* s' g9 d! ^% i2 ~$ ~;;
根据ij的信任度来决定是否与j进行交易[6 _/ B2 x+ S5 G5 \3 R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 C" o  A' R4 H0 \; B; r) r6 e# k, q7 S" v4 e! D/ o3 {
[

7 B9 H( k/ G. ?
- K2 l% e1 I4 q, Y9 K- udo-trade
2 X* ^9 G6 d+ d! O% O( N6 r+ y( B: v) e

9 h* R9 P3 [+ ~update-credibility-ijl

1 U3 A+ k* i9 F1 ]- o
' c1 ]9 r4 [2 u; ~1 b6 Supdate-credibility-list5 T+ W2 i' e  ?9 y
9 m4 u6 Q3 M* j) T3 r

1 @& x& I, d7 P& M; V9 pupdate-global-reputation-list
8 J! b0 h$ [; t) D) J. i' O
% K- ?! Y$ n) g9 E& Z
poll-class
( G7 B; f9 U/ G( u  J) y
4 j$ {8 w, x( f+ D4 _7 w7 [% |4 {6 q
get-color
' U0 R8 P, }9 q$ m7 w: g

( W7 x$ Q. E9 F9 P]]
+ `% Y# j) _( s) ~6 z" J% A% m) n  A8 x
;;
如果所得的信任度满足条件,则进行交易6 m+ g; F& ~; P# ^6 q. V

4 g! e: f) k4 _* L2 k* N) q( Z) P[

0 f+ K- o! I+ w1 p: u* m, l' m! U
% l" }2 ^3 Z# H3 y" \7 L1 Jrt random 360
) X4 J+ g* A4 k
2 u! ]5 E; B9 H: V' F+ B
fd 1

1 H: Q) G* E* U6 j- c/ S) i4 s! |* w' P: }$ q
]
6 M& C4 Q! ]0 ]( {8 p
( q0 p9 s( \8 b* P( }& C
end
- n' r" B7 P8 U! [; C2 Q; L
7 d4 w5 R$ ?7 T3 \. L( i
to do-trust & V- o3 _9 l( [; c  P! D- c
set trust-ok False
' h% P& J: X! g$ n  B" T$ H  o5 @4 s8 g) H! H8 B* ?" a
2 u$ N" n9 C, A* f
let max-trade-times 0* ^- W5 T5 ]! O) R1 z+ `8 ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 E$ C' x5 M- d/ U* g0 Ilet max-trade-money 0
" i( u( c! ?' z6 {" r* `$ Hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 g5 `7 G* ?4 b& E' x
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 K2 O* q2 G, t6 L  L& _
0 L% J" V6 y6 x7 G8 M

+ H5 }0 R3 ]6 _, k. [get-global-proportion9 j' ], ]" y: O" p- A
let trust-value4 j& j7 g2 V% u& S) ?7 {! @( `. 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)
' s6 v( i) Q, W' N, w
if(trust-value > trade-trust-value)
: e4 D' Q5 Z! q8 ?& K/ o/ H: u[set trust-ok true]9 M$ Y' c, d/ R) V# y
end
5 Q: @+ |( ~4 R* F- _9 u9 O! ^$ M
4 ]& L% I5 s- Fto get-global-proportion
4 d& a# }7 e5 y7 L, Nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 ]& F& R9 I/ l4 i$ ?2 i; D[set global-proportion 0]! S/ P; d. O9 d0 h. L3 j' j
[let i 0
+ J. ~! `+ q& h: rlet sum-money 0
! ?  p9 E: s3 n0 l& swhile[ i < people], c1 c' A8 F1 S. Q, c6 z& T
[
" n! M) j- i& hif( length (item i2 U+ U  A5 Y8 T, U: W. }7 n3 p" f
[trade-record-all] of customer) > 3 )
3 A4 ?4 l/ }7 M( D
[
5 t6 ]$ B0 A; u2 h9 bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ J6 Y6 {/ E) z2 G5 `
]- R! G, ?  j! y: ^0 q# D
]4 P2 p2 m$ }3 x
let j 07 G# Z' r& d; ~0 S3 X
let note 0  W) h6 U6 D. s
while[ j < people]
3 L( T' |# x% e1 [2 M( y9 G3 l[1 N  V; `) S. {$ y/ _7 g! F
if( length (item i
% X- E7 A$ R6 w2 K9 A[trade-record-all] of customer) > 3 )
+ `1 g! ~) ]8 i  J* d# x0 ?3 y
[& ]( Q8 e! a2 ]: y$ m# [, [/ I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 O; w; x, L/ L) K1 P
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- ?' j% y) t! e. U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* s. @" M+ @6 l5 `
]) k$ R* G  N. w1 G
]
& g: `$ f  H; `, l4 t) Jset global-proportion note
# M) X, M9 x- O% D# f+ {( z]& R/ f7 D1 U, ]: Z
end; u# n( J  Q- b2 l  ^' ?: {
; F3 I8 x: s! C9 [  c
to do-trade
4 _' p" m' T; D;;
这个过程实际上是给双方作出评价的过程3 U- w1 L0 x7 Y4 H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 z0 A7 x5 V# n9 o# oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 E/ {: \# i$ u, cset trade-record-current lput(timer) trade-record-current
) [) O' K6 z  n;;
评价时间1 g* o! \6 K. L8 x5 R7 u6 K1 U
ask myself [
9 R8 T6 S" ?: Y, iupdate-local-reputation+ G4 e! Z7 W* U" K6 A3 s# ~
set trade-record-current lput([local-reputation] of myself) trade-record-current
* O3 U* d  m* e4 O$ ?- p( S]
; o& c# G0 G, yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ k% }9 J+ c+ C0 [$ s
;;
将此次交易的记录加入到trade-record-one7 H" R' y( `% I
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- U0 S8 Q7 l7 \
let note (item 2 trade-record-current )6 c  |, x# d. W5 N8 b; j
set trade-record-current+ e3 R0 d& V/ }8 n
(replace-item 2 trade-record-current (item 3 trade-record-current))

" f9 L3 F$ ~: K8 ?" o; d/ Kset trade-record-current8 w: x1 n# H0 H
(replace-item 3 trade-record-current note)
7 C' k7 k# ~8 z& @
; H" V3 Y; ?8 o

; A. H' |& N+ j1 Wask customer [/ M" R* O0 D2 {5 U
update-local-reputation
$ L# S( w; ^; n3 f# K2 Vset trade-record-current( u8 b$ @$ v0 ?$ s; [5 F' O
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. \3 d% w5 z' r' C1 o$ O- q]
2 i, s9 X# x6 I9 f/ m" }( ^, S; g" w2 C: k- R8 c

4 }1 q0 v( j8 Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  r9 K% V- \4 L/ t3 J0 R$ Z7 u
" o; _5 ?7 |$ x, V) B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
' T7 A+ ]8 d) s+ O& n;;
将此次交易的记录加入到customertrade-record-all: G9 c  Q4 I8 G. ]
end6 T8 Q5 c" K5 n
* A* G" g9 p5 Z
to update-local-reputation# ^4 r' \' A; W" B% U) ~; Q, t4 O
set [trade-record-one-len] of myself length [trade-record-one] of myself
  ]$ ?& j9 s, Y- `. [, t4 h( C2 x  w' R6 S2 h3 z
7 U2 P& }' I( o0 v& R2 Y
;;if [trade-record-one-len] of myself > 3

# h+ Q! x5 p) nupdate-neighbor-total, D- W% L8 A! c# {  i
;;
更新邻居节点的数目,在此进行1 f7 V9 K0 _, P* s+ f0 S
let i 3
7 G0 G# J% Q  G1 G8 t' ?* Tlet sum-time 0
$ C6 T5 A* c3 o: ?while[i < [trade-record-one-len] of myself]: k( A9 a  V6 s% H! g" x0 V
[- f9 Q4 u) A4 Y7 i1 q) }4 v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( l& h+ [/ J4 ~' pset i7 R% L4 u" G# c" J
( i + 1)
4 E, r6 }& o1 ~; k- p: x+ f
]
: ?- U; L1 X- c1 V' m) Rlet j 3
, p! o6 G. b: H/ ilet sum-money 05 [& U- l& k+ c4 |. ^" X/ }
while[j < [trade-record-one-len] of myself]/ B- M6 A! @" w0 \+ L$ T) a
[
6 B' ~5 |* ?8 Y* e+ ]3 c; [- Oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time): y, p+ D% y5 o2 N
set j( G! \9 b0 B" X  `: L
( j + 1)
* S9 u8 F) B& r; R  a2 f) [0 [
]
3 w+ U- W1 f# E0 h8 k' d) m0 hlet k 3) |- B& J/ X5 H) p1 k. d# U, C
let power 0
8 K* _0 q1 o6 w' J' e0 |8 E2 @! a7 Alet local 0
" F; Y% y9 L% o$ [! V4 @while [k <[trade-record-one-len] of myself]
% H, k# Z& _) V- s% ?2 O( f8 r[. T4 j0 _2 O, {) n2 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) . _5 s0 K8 b: v, g% W$ k4 i
set k (k + 1): e( {- `/ G3 [) @' L
]
9 d" z5 y8 r( `" a  @set [local-reputation] of myself (local)* i" v% T: I3 E$ J5 H4 r
end$ \8 G0 r4 a( {: [6 i) }  c

$ ]; D% V3 ^/ M4 W  N% k/ [% {to update-neighbor-total
- y% c6 Z! p: b6 D4 _$ V8 z, C% y3 C+ e3 U6 u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 G1 |! L  W% a
+ \% E7 z9 w. M- d2 Q

0 r+ f* E4 e( y) Eend
4 M3 _4 n0 r0 Q- }! R/ }7 s* R. V- `% V  F. o
to update-credibility-ijl & l# t2 U8 n( ]" U0 s/ h

. K" @. f! |* l9 l/ g;;
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。
. T' _3 r- ?8 t% s. g: Clet l 05 r' p7 Q) v6 u/ I' _5 D
while[ l < people ]) a( ]+ r. c$ i* W/ {& q7 w3 V' N
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
/ A  R8 O9 ]+ Z: h1 `[
, }, v! o) G$ A% x* r' y5 T1 ~) f# |' `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! ~: [- N% _) H9 _7 Z, sif (trade-record-one-j-l-len > 3)
: r7 n5 X; [, U" ^[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% S) ^, G+ p4 p2 x# B7 s+ V) Q
let i 3
* `3 {5 v) E0 ~let sum-time 0# ]3 r' U" |! K
while[i < trade-record-one-len]
* h( i4 ^; [! i* M( }. t[! F/ C4 I3 j0 a/ P( G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 @/ A# f  a- A+ x% E$ z/ u* s
set i
2 |) @& f9 ]' l( i + 1)
! B. s. j7 N1 o: s* W4 g/ a7 V
]
0 l# D' G0 x. X! N9 H4 X: z$ w4 hlet credibility-i-j-l 09 X# O, d5 `6 V! L
;;i
评价(jjl的评价)% j7 B* D5 G9 _! p
let j 3
: I1 ^, a: S" `% V5 [let k 4
/ f) ~5 S: X& y+ K4 l; D9 D" swhile[j < trade-record-one-len]
% k- T: x! |' y# T( H[/ N% P; d: a9 T( |4 R+ y2 p: A
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+ h  ~; e; a# w, p' ^+ m
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)9 m# P8 A! x+ D% W' ~- W7 _5 @6 Y
set j' R; }/ j. D. z) y5 @$ s6 g
( j + 1)

% z# I. |% R2 E& W: T3 D  G8 Y]
: @- Z; v* i# t! n% Iset [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 )), w5 z$ e- E) ]# I* w( G, W

7 f# J- S/ U) k$ \7 h2 I) }/ @: F$ d+ l! P

6 H1 l1 ^( E9 E- o9 j7 A: llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& q8 \+ c6 M% A+ h/ j9 h;;
及时更新il的评价质量的评价
3 q* x3 W# `7 I8 P" Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( l  u5 u8 {- H" Z8 [7 V$ Bset l (l + 1)
: j4 r5 |# B4 _5 t& C$ |* d]. m+ _7 z& j4 k
end
- Z: q7 c$ y6 r( J) ^* i" u8 q% E. f: ]3 h5 b
to update-credibility-list0 A& A; X0 ?8 O! f
let i 0
4 Z: y) Y) X8 X6 j  N' vwhile[i < people]) b6 b+ U! `( N4 s
[
, V8 ~0 |2 R' L, _3 Wlet j 0$ q- B, y$ R- q! c
let note 0
0 [1 R7 _" U5 h8 ~$ S, Z! }8 alet k 0
- C; ~; x& ^) r% v8 l;;
计作出过评价的邻居节点的数目4 v- l5 ?6 Y# b/ Q5 [# k% e* R
while[j < people]
- z& g4 p. a5 w: Q[0 }. w% n! M$ h0 D
if (item j( [credibility] of turtle (i + 1)) != -1)) \) k, u9 ~- `9 s0 ?
;;
判断是否给本turtle的评价质量做出过评价的节点
% k6 s- j% g6 b' r4 d; e[set note (note + item j ([credibility]of turtle (i + 1))). j/ _* m& K9 W. x0 y; T
;;*(exp (-(people - 2)))/(people - 2))]

+ L" y1 J( I) |/ dset k (k + 1)
9 s5 j* T& _! a]
, ?% u; f0 T# e3 {' J8 m6 Bset j (j + 1)' D6 K* a4 \4 W$ h3 Z
]1 W2 E0 g0 j( p# |3 }
set note (note *(exp (- (1 / k)))/ k)0 T; x  g& M- M/ ]$ i% G
set credibility-list (replace-item i credibility-list note); O4 }4 Q  S4 Z$ q- R- x0 y* @
set i (i + 1)* ]' W3 b' h: J. C. F
]
( D3 ~+ F# W/ r+ I, s3 Z% cend# H5 n- J. a5 o
& R4 H$ v# G( c
to update-global-reputation-list
# ?6 u( T2 ^* P0 O( e1 alet j 0; Q2 C7 W- w0 t! ?7 X8 h! G% ^* i
while[j < people]
6 ^9 v/ v) u7 i' T[: h' r9 W  c5 v1 N2 I
let new 0
/ _) i7 {/ D7 M9 Z; s;;
暂存新的一个全局声誉
, E3 [0 y8 P" g% glet i 0
' ?3 k! y- ^, f& G; ^. p, ilet sum-money 0
3 @) l8 T+ u( }% Y5 b. Flet credibility-money 0
9 h) {# e# T0 qwhile [i < people]4 q* m: |: Y" }/ d; T
[) a2 s) D2 H0 Y" m6 a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 K/ d3 M, G' b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 P5 ?$ t- P* q  m  cset i (i + 1)
; O, [$ n  l1 @  K0 R) m5 @]
% R0 r9 Q, L( _6 ]1 e9 vlet k 0
0 _0 I- k' H% A  q# F- c) Olet new1 0& t1 O; I0 {- |0 k) o
while [k < people]' n; D+ u! x+ U
[
0 x3 m- z& I8 H& W; q* ^8 cset 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)9 V# l  d0 J1 _4 D9 a0 S: b) m, [
set k (k + 1)4 z3 ]7 X: d9 F5 i: x  B
]
! ]' H6 J$ ^& {1 y8 bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - X# }4 e* q; F+ I1 _% j
set global-reputation-list (replace-item j global-reputation-list new)
+ C% t9 b( n, J( D! f; U4 W5 Lset j (j + 1)
' r  e- u4 u- p+ }* X: Y]
7 Y6 k' _3 z+ B% P5 }% \end/ p1 y" ~9 ^! J1 [% S" k" S4 {* ?
; i- R8 H; B' ?& X

* i2 _* q! i' O# C! j* @0 q3 Q/ l& D% f3 C
to get-color
. v( M, a6 l# e3 W# r) ~6 U$ L( w
& {$ F% c) i( \+ Mset color blue

# G: F: r4 A1 s0 Bend
: b  U9 I, N& @, v  s: f
0 h1 }9 A5 h+ O  I: [( }  j/ gto poll-class
; A( Y' ~( c; G. Bend
5 O7 E/ T- E6 `: c. [& ]% E6 ]4 L7 a' X+ q5 o! ~( @
to setup-plot1: h6 T7 a" D0 f) {2 \# ]
! {! |: _3 T* H) o
set-current-plot "Trends-of-Local-reputation"

* L# j; r! B" a9 o9 P4 o, C4 j( h! H( x  Q7 i1 A
set-plot-x-range 0 xmax

1 H2 w% r. g1 d# a
& \" x! I2 D+ I1 Jset-plot-y-range 0.0 ymax
" \* Y2 t& E% J
end8 i  I; y# B, l- j. h0 ?* F

, t2 ]+ T* s1 U0 u4 |to setup-plot2: L) c4 e& f: z3 r7 r

4 ?3 L" ~& J' d2 G, E& jset-current-plot "Trends-of-global-reputation"
- I+ j' J+ l- v

% ?. W# t: `: d0 X5 d# W2 Pset-plot-x-range 0 xmax

) z. Z* [$ I* p# l4 s7 t7 J- q# r4 B) u7 v5 U4 u; Z. x8 T
set-plot-y-range 0.0 ymax
- R% O4 A, P3 u7 A* j/ O
end# A+ e- w1 l. d$ X8 S9 Z( ]5 C

/ f0 ]2 r0 N6 ~" E- W( nto setup-plot38 Q5 u3 N6 t2 y  s9 p" z7 E
0 _+ O% \: l0 q$ b+ a4 U
set-current-plot "Trends-of-credibility"
" D- C* n. a' z5 n
# r/ y, }6 W. G5 h, r
set-plot-x-range 0 xmax
2 |8 _4 D3 R2 C- V# K6 p& `
* w9 _' J1 w. u* s. S! |- }
set-plot-y-range 0.0 ymax
) P) o1 g0 B& r! d
end
; ^, ~) N5 r8 N9 U: ]" m
# R( }* Y: o! {. V8 Wto do-plots
0 U5 T# o2 I2 Zset-current-plot "Trends-of-Local-reputation") u$ c" r  e* Y* V$ g" K* y7 k
set-current-plot-pen "Honest service"- H' k! `, c# r5 i- K
end
7 C5 M3 T; P  J. @9 Z- @# z: \
( `, }0 l* `* z0 o& 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.
8 p/ l2 E$ J" Z2 t9 `& M. \/ D
7 r0 S+ V4 d: b( G. B# W. a: |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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