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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:
, h4 g! y- ]$ g$ ]to do-business
6 E) [: A$ [) l5 O' h. Y; L8 l rt random 360& K' z, |/ {9 p1 s7 W  y) Z- \7 q
fd 1/ F6 G1 M* W0 S
ifelse(other turtles-here != nobody)[
( J3 X5 g) m) B6 J5 R   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
3 [& A  j8 C+ t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 G& o, h+ D  I  k   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) K$ z! Y3 |* Y; z   set [trade-record-one-len] of self length [trade-record-one] of self
$ r! W/ ~" a& h# K/ f3 {   set trade-record-current( list (timer) (random money-upper-limit))
5 J  Q- y; n# V
! v6 T0 d- g9 t0 E8 X1 c( }问题的提示如下:
+ [* Y; m' i: _% E! h, a8 T! C0 F
6 ^6 {9 e- H# O7 t2 merror while turtle 50 running OF in procedure DO-BUSINESS% y+ J8 r0 W3 t7 w
  called by procedure GO. B2 P  t. d4 i! {% r: m& J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( c8 D; V' U0 b' }4 z4 V" ~# A5 I
(halted running of go)+ [0 H1 z6 H5 w/ J% N

, h( ?- R, ^% p1 g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~~
- ~  ~# g* v" F% n5 M另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教: D9 @. c4 A) i. x9 Z  x
globals[3 X: a* y+ p7 m4 M& I9 a) q
xmax4 ~) C6 u2 E8 s; ]0 O# \
ymax) m" N) D0 U* P' r
global-reputation-list
- K# C; t9 U: r8 v0 `6 Y& Z
# `( ]% A, I; T0 ?; _;;
每一个turtle的全局声誉都存在此LIST+ x# t: x/ Q. b# j
credibility-list% N- @! ^2 N9 S
;;
每一个turtle的评价可信度
- k% ~( d8 G8 O0 _1 }9 c3 Hhonest-service( l$ G: |/ c% ~* n; V" l' S
unhonest-service! r+ s& q& C+ x+ W
oscillation/ t$ ~6 t- o$ ]  C; Y; H
rand-dynamic
% g! S& ?% g; z9 @. r, C4 ~: A2 P, y! []
- s+ S) ]$ y. x1 H9 r# f4 W  k+ C* x$ g1 N/ Q
turtles-own[
. V8 B! B) w1 R  c( J( Ttrade-record-all
' f4 [. r' G9 C8 {;;a list of lists,
trade-record-one组成: I* N/ C# _( P; Z! C" V
trade-record-one% @0 \8 i7 y9 A% e2 P
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 a$ ^, {: {- y# |- e" d

% w( {* j! x( F# y) E1 p;;[
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]]) q2 o- T7 Z2 F% A' a5 U+ ?
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]( E+ b( p1 L2 _6 c3 o% z% Y
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
0 [) w* Y8 ?* a2 F0 f3 Y+ [( w$ fneighbor-total
0 `3 L% W* k* B2 o: q' @9 h) g: F;;
记录该turtle的邻居节点的数目' c4 p9 A2 @; e2 G, z
trade-time
5 s. b, w3 ~( }5 O% f! @;;
当前发生交易的turtle的交易时间2 P0 m7 Z: I" v2 Q
appraise-give
- P: k# T/ T$ @# ?3 n6 ^. o9 D' [;;
当前发生交易时给出的评价9 c) L6 h- k1 m+ U
appraise-receive
& [+ a, O, C* h. g$ G# e4 \  ?;;
当前发生交易时收到的评价) U2 i+ o# H' C. j
appraise-time  V9 B: A# |+ T! J# k8 p
;;
当前发生交易时的评价时间6 t& \; [9 @! e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% ^# m- o, C  c8 Y) o
trade-times-total! C) r7 _3 d: W& F2 X5 b
;;
与当前turtle的交易总次数! m3 w$ [* ?% ~
trade-money-total
( j8 ?- \* l2 Z  T. @( k;;
与当前turtle的交易总金额; o3 Q) t% ~; x8 l' u" K
local-reputation! q3 {9 G5 C2 I( K4 Y
global-reputation7 `6 W. I8 ?7 U
credibility2 \: o1 b2 J( D' z+ z) s
;;
评价可信度,每次交易后都需要更新
# {+ W. {4 {' x  t: x! _credibility-all, ]# e0 F: Y7 E0 m, z1 V8 J
;;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
* q. M5 O- b5 c4 g0 ~: g" w9 i0 ]7 Y9 V* 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$ G: Z/ Z' T2 r
credibility-one  g2 S$ G- |% R* {3 e
;;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
7 ?. W0 ^6 n9 Q4 M& ?& qglobal-proportion
- P) s2 e4 A0 P- }customer9 j" |" O7 W4 k
customer-no
$ p% Y6 J: H1 n7 n$ R" Vtrust-ok
: Q# K% K: n9 `3 E" k' E/ \3 Vtrade-record-one-len;;trade-record-one的长度8 O9 T, c4 T: S/ |
]; ?. C2 j% Y7 o* r6 I- x& N/ c
$ i2 G' s+ F0 q  \" g1 z
;;setup procedure4 z+ a) _3 d, G  p* _1 r& S( ~

$ _( I2 a# q1 L3 h* S0 n# P3 G7 eto setup' k: u; M/ Y" R
6 y7 T" O5 g2 n) Q
ca
. U4 S3 ]: i1 A5 x
5 Z8 b2 \, K3 c2 i
initialize-settings

# _6 K; Q: X7 x% p8 c, }  X
$ u  C: P9 S3 y8 Qcrt people [setup-turtles]

6 O! J6 ~7 F$ B$ B. `) }
; Y0 f1 r; v, r/ \$ O/ A' areset-timer
* F: |" ^7 L% U" U7 ]

0 [! e4 K. R' L: t' J' ypoll-class
$ e1 Q4 ~( r  o# i5 Y$ h' }' @/ x
2 a, W) {6 I3 T( F$ k9 X% g
setup-plots
6 X; M& S3 a: \! R* B

9 P2 J2 C' i, c. ^3 J2 B! U, G( @do-plots

' E6 t( i1 s' F+ h0 v' T" |end
! o6 t: L% X5 c, }, z3 _3 J
' L+ G( U2 C' y" Kto initialize-settings
$ ^+ t' o$ [) V8 N5 F/ M/ n: y! y: o" S9 u! W$ g, w2 O+ N
set global-reputation-list []

/ _1 U8 F2 ^: h( U) }. r& @
6 a1 ~5 g5 r# t. V, J1 \; z: W  Lset credibility-list n-values people [0.5]
- o* t  y1 x' x- i5 x+ o

* {- e, U  ^8 t9 Xset honest-service 0
$ J- D) e& M! S8 ?( \
7 w  M! A, H  M; c* I
set unhonest-service 0
# H" i, V3 Y# f& n0 N

5 D) F5 |2 w+ \& a' n# dset oscillation 0
6 o# L& n" M$ Y( V# L; l

4 |' l6 t6 B' kset rand-dynamic 0

& o, _7 C! j2 f7 l3 wend
8 b+ w* F9 J% ?1 i& X, P3 ]
$ }$ r& f/ Q7 T; B* Y" }: I  Lto setup-turtles ' r, V7 k3 z; q/ V+ b# G5 f
set shape "person"
! I5 s" }2 w: m, j0 Osetxy random-xcor random-ycor) ^- w' l, v; g3 ^2 M
set trade-record-one []
! \) |" L( Z/ t& h4 m% e* ^* A
1 Z4 E7 N4 d/ n1 Q
set trade-record-all n-values people [(list (? + 1) 0 0)]
1 h1 H2 o, a; s5 ?) M- U' c

/ ]& E, p9 l: I+ U$ ~set trade-record-current []* A7 h4 w6 {0 L& D' ~2 f( X
set credibility-receive []! W/ s# C5 }& D$ m/ A2 L2 s
set local-reputation 0.58 ]) f6 h6 Y& X7 ~
set neighbor-total 0" Q9 i: p! }6 K: `0 G+ `
set trade-times-total 0
6 r8 T3 M7 T2 nset trade-money-total 0
$ [' j: n5 a4 _2 n$ V% [set customer nobody8 F5 c) l* K2 z$ U" V
set credibility-all n-values people [creat-credibility]7 b3 x2 ~. b# k; o6 X2 g
set credibility n-values people [-1]0 @+ G& U; F. h9 m6 w
get-color2 e$ w4 `! R8 w/ o4 O. [3 I
* Z) N' a3 K7 `. ], E6 H% k: ]
end4 G- o9 B/ Q0 K' {! G2 G7 L
) `# y( M3 q% e& i, R9 G8 _
to-report creat-credibility
$ M* @0 t# f  r9 w4 U* W  j, ]report n-values people [0.5]8 z# x) V# [9 W- L- Z, l0 Y
end4 y5 O1 H7 N, _6 Z
1 `0 H, D$ I. U1 {, \
to setup-plots
. w5 x2 P2 f/ p: ~$ D' W- g. F* p7 `% X
set xmax 30

( J5 X0 m" c4 _2 k$ w7 x( |6 r" i0 E1 ~: c2 p  N
set ymax 1.0

0 d" S; I, U8 G) m3 F, N- {
/ p% W( O$ L0 t) z& I5 s% o. G6 ]. Jclear-all-plots
4 F; ]) e5 c. V" ]8 E  r
% l) z- x/ h+ g- D8 Q$ `
setup-plot1
$ Z( i. G, X5 A

  I0 ~3 Y6 F; Wsetup-plot2

$ e1 N* i  C" v% T8 y- v+ j
/ \/ W$ [7 z7 Fsetup-plot3

6 s* e3 d. M" B) M$ j2 Tend
% R/ `" g9 c! q3 J' N! g
0 r6 j( j: I3 x" U4 ~. e; K8 W5 g;;run time procedures' O7 Y% ]8 g0 q4 `  S. f$ m
& _8 K3 q% g2 W
to go
4 V3 M) ^% L7 P; T9 f( @& A  D. B) f' v& {. }; k3 Y. Z  P
ask turtles [do-business]

2 j. C9 |: L  Q1 F/ pend6 j5 j; |! X; Y/ J6 T9 @5 f
) V( O- ]7 V# I+ g6 T
to do-business ' `0 n* ~' I$ g% W$ D

2 o" Y5 o* K8 J1 v
% a3 P5 D; r9 [, V/ @* Prt random 360

  J$ K* {+ A0 u3 X/ w8 c* l5 e( q: Z% r' j4 D$ }
fd 1

) [: f# h; r7 C' m8 x  K6 R' I+ |- A9 Z: ~  z6 Q) y, A$ W
ifelse(other turtles-here != nobody)[

3 L6 C8 J) W, h( R% `* W; r- S% @, j( x" T% P# u
set customer one-of other turtles-here
. @/ E' }* M* v1 R  o; D) e0 A
& d4 x/ V8 `! p# f3 M
;; set [customer] of customer myself
) Z4 S( L8 V% E' m# B: i
% G! T; I+ M. o; Y4 ?
set [trade-record-one] of self item (([who] of customer) - 1)& D& v1 l! Y9 x/ r. i+ E" r
[trade-record-all]of self
2 b/ v' W# f* n8 t6 a* x8 p. \$ j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) e6 y& V0 ]. G1 H1 l0 A4 r

5 B. a8 W& Y- B' Y$ J$ m3 Bset [trade-record-one] of customer item (([who] of self) - 1)" w6 d% m  z9 F, U
[trade-record-all]of customer
. q: F- \' B1 g+ C

  B( d0 F" r! h1 nset [trade-record-one-len] of self length [trade-record-one] of self

) _% i6 p' ~  L! O( P; Q2 d7 P8 d: X. Z" Z$ h; f
set trade-record-current( list (timer) (random money-upper-limit))

' f: b& ^( l- s# l% c" b% j5 |2 w% g0 J1 i" R) p
ask self [do-trust]( s1 K7 ~/ ~# @! X
;;
先求ij的信任度+ M$ c) ?: V9 I* y9 _9 L' S! w

' h  j+ }7 R4 w! Y) D1 R: |, U3 g9 wif ([trust-ok] of self): V/ B1 y9 W* B3 X& }. _- v
;;
根据ij的信任度来决定是否与j进行交易[8 {+ P8 i3 l. ~- n0 y$ @( m7 i+ ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& E4 U4 M3 o* }) ?1 X

+ ~/ E" M0 t) B0 |4 q[

4 Y6 ~5 e, @/ C/ t6 G' N1 j/ v5 b2 r& E9 _: o7 h
do-trade
  ?6 l  Z5 m8 r9 \4 M- Z5 c: W- |

; ]2 `2 \+ K% g; \update-credibility-ijl

1 {0 E3 m: B( `7 `# }' ^( c2 J3 m8 ^3 e; G0 b/ k& ?/ q5 H! }) I
update-credibility-list. z0 ~1 H& ?0 J. Z* j
; i- W) ^0 O1 U/ D* f* ^1 l
5 C8 J3 c$ Z& j6 x5 S6 r' }
update-global-reputation-list

) S; \; g& _# e# ~5 X# B* f4 C8 d' U" e8 p* |8 L# h8 G3 s* K, G3 i
poll-class

$ r; U4 I* U: m, ]0 C7 m) D6 t! G. D- S( X
get-color

& f1 `, g+ Z7 M0 P4 {, D
4 F* M: b1 M& h* B# {4 |]]* B: T& t  _' Q5 p; u2 T) x# Y, o
' W, i4 Y( b, g) X1 J& X- E( g
;;
如果所得的信任度满足条件,则进行交易9 M. i/ W& ]. p$ ^) \5 Z
0 O  W, L1 Q, K0 }& T
[
( u% X7 b0 M' d5 K7 Z6 u* \- t

' x+ o4 b$ [* `6 x2 f* Grt random 360

7 u% {3 Q) s9 M' L) Z( A
4 z0 X0 X" R% |  Cfd 1

. ^8 I. v6 z0 X! n( U& F/ d8 x6 ^5 X, l
]

6 b# j8 Z% c: A0 @6 L" m6 _% V% l; j$ E% P0 z8 L3 C
end
4 g/ w1 E: }5 J0 ~: h
8 }& E7 _1 {0 i
to do-trust
7 m! u5 u% M" p7 L0 aset trust-ok False+ _) T! q2 ?6 k
: e9 B/ b  M  w- w  \& j4 T" d( e

2 {5 q5 o) O, b1 dlet max-trade-times 06 X2 _( u9 ]7 k/ ]. K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" e( z0 I8 x, p6 R# O# n2 @
let max-trade-money 0
# n& A, N2 ~. X+ A+ i+ Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 f+ q6 z6 x9 {9 klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ S: t2 N) a1 [) f0 W) f7 d
/ |( Y# O& A0 q& p3 }' e( z: H
. m3 t! }; @- S
get-global-proportion
) ?4 r- e' K2 nlet trust-value
# n& E( f/ E7 }1 L& q. ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# ?0 ]  g/ b) s* q% Q. M6 O+ X9 d4 |. a/ _if(trust-value > trade-trust-value)8 q: `. `' E* I0 H( X
[set trust-ok true]" x8 O! a+ I/ Z' S7 k9 u
end5 O2 q, P8 C! d; a6 ]
' Z$ o& o2 O5 u: |. G3 X, a, a
to get-global-proportion1 s& F0 z. }$ y4 f3 W$ |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 h& D9 }2 _( _! l9 {3 C
[set global-proportion 0]# H2 k/ I1 T1 c& ^& @* c% F+ R; N
[let i 04 a' y; j2 V* X6 w. O' ^, r
let sum-money 0
$ Z; ]/ B9 R2 i6 |) l# u) ~" Twhile[ i < people]
/ M( A. Z* v/ {' q" ]' {[3 h/ R5 T% i3 |- a. j
if( length (item i
# c4 y# K0 m% a8 j. v( ?7 Y[trade-record-all] of customer) > 3 )

3 o' H6 y% r9 o: F, a' c! |; Y$ d[
( y1 }% O# W8 n5 p9 n$ S3 W0 d6 Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; O9 [5 B" r& G. Q  `]" u% m0 N' d9 {, @# i
]
& G0 c9 g) e, a- R& e  n! X3 T1 Llet j 0
1 _6 X& O6 E8 L* klet note 08 N9 M# b5 o4 N& ~! H, H7 g$ }: ~
while[ j < people]
4 M) L2 d( ~) ][
. s% ~! A" ~: E6 Aif( length (item i
7 }8 L* E. c+ W7 A: b[trade-record-all] of customer) > 3 )

0 V4 B3 A9 ^' T" r; y[
3 E9 G) V& |6 i' i+ Z) zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' D2 ~# A% z& |) U+ M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) n6 H9 R2 m9 ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! ^$ Z. ~8 H- Y) R5 Y6 |. B/ |]" R" d+ u/ O- m- A: s0 ?
]- Y1 h7 J6 Y9 v9 x+ Y9 O7 \
set global-proportion note4 Q+ c! Y# p" d2 D: {  x4 H3 A
]0 l7 K( s4 ]! _- v3 m/ _
end
) ?% u1 G' P" W9 r- I: e6 j! W. d" y8 x! f
to do-trade5 M3 b) V; ^+ R2 X
;;
这个过程实际上是给双方作出评价的过程
) X% r1 D% w, ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! i* n1 B/ \, ~* y. z* C, P7 |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 x$ i& g, {& b7 T$ vset trade-record-current lput(timer) trade-record-current
; T5 m7 Y$ I' j* x" q;;
评价时间
% [2 B/ f3 k: f$ P4 K. z9 t7 dask myself [" I3 {" @2 A) q3 i
update-local-reputation
) L0 B% i% T! k$ p1 D% F$ @& _- dset trade-record-current lput([local-reputation] of myself) trade-record-current
$ F! e3 R" ~8 J]1 {( g( H" @$ f# I* t# x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' w1 B! @( k6 _- q) p3 c- Y4 n/ A;;
将此次交易的记录加入到trade-record-one2 x% |- `. v4 p: \1 C9 D
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 s0 c' q: s4 Olet note (item 2 trade-record-current )* I% H1 Z. Q# y. N+ I
set trade-record-current5 z, C0 v. ~0 J$ x8 ]
(replace-item 2 trade-record-current (item 3 trade-record-current))
( }% W$ E- V+ f! A, Q" h# w
set trade-record-current4 L# X) S2 ?7 ~: y0 `
(replace-item 3 trade-record-current note)( E9 l  E$ O1 f0 Z5 Q' s
% G0 X( U. C2 ?# Q! m

0 l% ^5 M; P6 H' f+ J- W+ {ask customer [
5 W9 u, J+ ]4 Y% }3 W* \% pupdate-local-reputation
% G* O. p$ l; W/ j% R% Y% _8 \set trade-record-current  T4 j+ k, @& Z/ s# }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 R9 l4 U" R" S% q9 y' _, m]
3 b, Y- b( G+ |) c, H8 K+ y3 \# r3 A  Y6 N

/ C) ^  J+ s5 Yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, x, _3 t" y7 l- Z" m' H

4 ?0 s1 h' |. B! R# B% ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# Y- I8 V' R8 E! b' J
;;
将此次交易的记录加入到customertrade-record-all* _; o$ I/ h+ ~2 c4 d( j
end
1 b3 g) R: r3 J3 v: \  b
6 I1 O6 V  V# w5 Qto update-local-reputation4 T* s7 Y$ x" i+ N* W$ w' u
set [trade-record-one-len] of myself length [trade-record-one] of myself+ \! J& F& b; ^+ w/ G2 e9 r+ a+ h
3 X+ D; v& b$ A; H. c
$ v+ t, A: y" J& Z$ C2 i" L$ V; U5 N
;;if [trade-record-one-len] of myself > 3

4 y) C7 m$ l" T: Y; ]update-neighbor-total
9 y0 r( \9 ~% s8 i;;
更新邻居节点的数目,在此进行; u( l4 b. m" l* }3 P  A% e
let i 3
4 G: q7 c8 n4 \let sum-time 0
3 _+ P3 B7 l  q/ Swhile[i < [trade-record-one-len] of myself]
( J" Y: a" N$ w1 R* A[$ [4 o9 e) N0 ~' I/ O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  U! I1 O4 ^- f" O1 D. F: D
set i
9 C. j  X# z7 M0 _* j: d( i + 1)
6 B8 t( ?2 ]' ]1 O* g- H5 s
]- E9 ^! V' S  n4 R, D
let j 30 ]8 k' ~/ O2 i, C4 |
let sum-money 0
: U5 `% c, q  N4 gwhile[j < [trade-record-one-len] of myself]/ @# v2 E+ z" }, e+ s
[5 @; Y% t+ P" W4 l; v6 x4 E' Z
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)1 \2 i" K1 G8 b
set j3 S. k' @9 p  w8 y' }
( j + 1)
3 Y0 w; H8 f$ G/ ]0 |; h1 z1 g
]9 Z/ Y- U  V1 u$ H, A  \
let k 3
- i: D4 Y/ s6 xlet power 0
- B9 A$ U9 h+ }; [let local 0
- o' ?. y8 W5 K+ s+ L- S) Kwhile [k <[trade-record-one-len] of myself]: t$ d4 x4 m2 d* ]% h, P  d
[. y4 T5 G8 h, j( w9 U* O
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) ( z3 l* J* M6 |# [
set k (k + 1)9 D3 b4 s$ P! t1 B1 A
]
2 ?& ?  v" g' v. O9 {5 z5 Eset [local-reputation] of myself (local)- X0 M9 T: s6 c% V2 Q
end7 @% E1 S/ D, u, p  U

$ X1 m( z  c: r  k, {to update-neighbor-total
0 d) u& f# [, n6 w5 O: j
, W0 i$ a; ~; w, v( N6 L) ^4 Uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( P& Q. P: w- l4 T9 I1 n
7 U% _' R+ G1 N& ^7 _" m# }

7 M8 o% q0 z& hend/ m' f3 c2 R4 u$ N; G7 z5 I$ r

$ e4 W# N2 f- x) E* _to update-credibility-ijl 7 d  }, s; W( Z" E: [( H
* d4 n! P( M& X- x: ?1 M
;;
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。5 R" m/ C7 J( Q$ r7 m
let l 04 H3 R8 N7 P. @% J  x. e, i. H
while[ l < people ]8 M0 Z+ Q$ _3 K! ]6 e8 D! w
;;
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* ^5 h- H( R+ `! j. K
[2 `: q, h+ @: e0 F$ b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)& P; ^* ^7 G8 R( s/ v  a& K
if (trade-record-one-j-l-len > 3)
/ d" R  w' K3 s# ?[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
' E( W. X, h( t8 `2 W3 Q$ N8 v- M6 @9 f8 Dlet i 3$ o9 N9 A+ N% S2 }- _
let sum-time 0+ `3 v3 O$ P1 u) |: E8 v( L+ ~
while[i < trade-record-one-len]
1 M: c2 K+ T  v$ V$ H, x4 W6 s( S[  ]- v- }! E+ ^8 l) j$ ]/ G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ r0 l5 W9 W6 Q% M# {  k  Bset i" C! a7 l+ D/ \7 K) s* K) R) s
( i + 1)
3 ?' s; v  Y$ Z+ x
]7 b8 C4 z' n3 N( t( a: n" u" Q" G
let credibility-i-j-l 0( T5 P7 h0 M7 @" W. Z0 f1 y6 y
;;i
评价(jjl的评价)
6 m+ x  b% n! S- V6 _let j 3
! d$ u/ ~9 Q: Z6 I3 z' j$ i% E1 n- Elet k 4
+ _+ o! l  {0 b; Z7 Hwhile[j < trade-record-one-len]
3 X- W! s+ Z, v) {) X& i6 n[
1 D3 E, N1 I9 Rwhile [((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
3 C- {$ k. ^$ F$ [7 U' i$ \" e0 jset 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)' T( A2 P  @' M; x
set j9 h( |  k' w/ @$ ^  \' j- t
( j + 1)
* h' `* Q: i# V
]
' g& ~/ X* a. \2 E% P  s, @( Aset [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 ))
: y; a" }* l+ ^5 V0 ~! n6 F+ U: j' c% J7 H3 d) k- Z
1 `' K- I! s/ f. f. H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 e6 A+ D/ v8 v/ I8 q8 l+ B* y4 o
;;
及时更新il的评价质量的评价
; w% e1 }& e% _6 Q# t" Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' o/ n. t; G+ c% k! G5 Jset l (l + 1)1 Z* `4 ]. A. Q, s* z/ `
]
) x% ]2 `- K- V8 k6 ^' D. lend! Z: v4 ?+ r, @  Q, B# j1 F

  |& Z1 s# G, Oto update-credibility-list1 l! L% h4 w( m2 s
let i 08 D3 F( b- ^4 [% U4 o
while[i < people]
: Y& x9 H- b7 a' D[, |4 L6 V; O3 N$ {" r  v2 s& V' ?
let j 0
& R2 U: f+ z9 ?- e4 r2 Ulet note 0, O$ ~5 ~5 V  i+ q
let k 0$ v1 p; f9 C- B
;;
计作出过评价的邻居节点的数目+ c" g/ l; h9 t( y+ v
while[j < people]0 S8 ^$ J% W7 a7 ^: X( D
[; t; ?5 M( m+ @) [+ p
if (item j( [credibility] of turtle (i + 1)) != -1)
: w, Z" u2 k9 A: R4 q$ s( P& j;;
判断是否给本turtle的评价质量做出过评价的节点
1 N/ D' {, }" ?! R[set note (note + item j ([credibility]of turtle (i + 1)))
# B" k' U2 {( e% @;;*(exp (-(people - 2)))/(people - 2))]
0 I: d$ P: R. \0 q$ L
set k (k + 1)  t8 Y% E, q  A) X2 Q' r# U2 r
]
" v/ k" I" F! a9 c. X: @set j (j + 1)
. v" l$ C) U! T) y( f]3 k9 g6 ~- b3 Y, @0 S. i
set note (note *(exp (- (1 / k)))/ k)
, ]! P# p1 X6 U5 K! w/ Aset credibility-list (replace-item i credibility-list note)
0 ?& p- q4 M6 \# _2 Uset i (i + 1)
/ A! K6 g2 U8 m" J/ K]
3 r" `7 f* c. j3 D; t, Gend. k0 T: i9 [  R( @# P# z2 P  m

$ K  {0 i) P& l8 Mto update-global-reputation-list8 J  ?0 z. c2 i
let j 0
. ]5 E& N& ^- [, }8 t- Cwhile[j < people]
5 {' d% U. B, T. B5 E[
) [' Y0 ?6 q) i/ q6 |7 N0 `+ llet new 0) c( c/ h* X/ E. w
;;
暂存新的一个全局声誉" t  F* o& w: v& M! |% r
let i 0- |4 V( D$ E4 \( b( Z
let sum-money 0; [- G! F8 O. r9 a: l# @8 v
let credibility-money 0
& Y4 Q0 g6 ^/ \8 x' H4 x# bwhile [i < people]2 n0 q2 w1 C0 e% r. L
[
! }( v' N- T, s- \- O' eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 y/ M9 i+ p5 M; a  n/ K$ i+ H8 w; @
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 x3 z* [+ {  t5 x% Vset i (i + 1). U' h0 W& e5 p
]# g/ s5 x+ L. g+ @* [4 {  M
let k 0
1 ~1 Y# C, L7 ~( O$ \$ jlet new1 0* A# h  [. m# X% ], p1 ?  Y
while [k < people]
9 m7 U& \. F' P  B" g9 [+ @[
% I" H  m5 }; s5 iset 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)$ @  u; s0 I' B$ J# L9 t* M
set k (k + 1)
/ I: r) z$ `5 p( F# t* [- D6 c, G]0 _5 y# d& k1 h% m
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . R7 Z9 p5 j' f) a; r
set global-reputation-list (replace-item j global-reputation-list new); v1 U6 w  R6 b7 Y  E6 @; h: o9 p
set j (j + 1)
! I( q1 _! J' V5 k5 T]" A" x( `' U& y; Y$ L) c/ G
end2 s( ]& O4 }' t( j  N/ b- C0 n

7 V# U- u0 e) c% x3 w  i/ P3 @! y  b
# U/ [3 D# Q; j: C# |
to get-color
3 @% Q2 ^5 J( R2 x  }' A' `0 W) }9 r+ ]! Q: S
set color blue
! c, K- X: u" f& r' n
end' A; \- M/ e; `, ~
( m/ {/ x3 T5 q; z" `
to poll-class. W# m; j+ S& s+ Z
end' D2 m; ]1 N* o" a
5 s4 d* g; r, Z  H7 b$ [
to setup-plot1
  d) J) H2 r9 G% Z, q( Z
% H" h6 T9 z2 H$ X; P+ Dset-current-plot "Trends-of-Local-reputation"
5 F. N' Q2 W7 H" k; \
/ f/ G3 o& M3 I9 Y) C/ P6 ~
set-plot-x-range 0 xmax
' S( E9 _6 q/ ?
8 }; ]6 ^4 f! t
set-plot-y-range 0.0 ymax

6 e6 R& V- H. H8 ~# J! |- Q* Tend, x" ^' _- F' y% f9 _

9 Y+ ?) I4 q0 O( [; Q% a( kto setup-plot2; U3 \* E- r, @0 M( m4 X9 L
6 J5 q) [: U! s; W# Z! C+ y( Q
set-current-plot "Trends-of-global-reputation"

+ m* P5 q/ q2 A( [1 x! _+ c  c5 e8 B* H1 j/ b1 d  F
set-plot-x-range 0 xmax
5 d; h0 u( X( o6 K' P

" E6 Z5 C9 p& \9 X8 U( W( W  `set-plot-y-range 0.0 ymax

* _% Q3 t9 j4 c4 R: I  ]2 pend
2 R4 X9 b) k8 a2 a& t. Y  `! v6 ?  W8 H$ N! l6 M2 W* G5 E
to setup-plot3
$ I1 ^; a  y7 A# b+ G; c8 y/ X4 f' C8 {" {) {$ c. H
set-current-plot "Trends-of-credibility"
5 N- G! g8 ^/ Q4 ^$ e
+ u4 ]4 T1 }* x  Z" T5 {7 m+ d
set-plot-x-range 0 xmax

6 ^: A& {% ?! H; f- w0 ^% w: P& x( \# z
set-plot-y-range 0.0 ymax
/ }! r, M( _* R1 ^# R% G6 ^2 S
end
: E! p1 i5 {' D( R8 ?( {) Z2 ?
to do-plots
; y) e+ _6 i) s; q7 P) V: Z8 Mset-current-plot "Trends-of-Local-reputation"
! j; p5 U9 N- @4 E7 a9 Hset-current-plot-pen "Honest service"
7 R+ @$ q0 c+ f# t- F6 r* d, rend
& c) ], \( l6 p% Z' a) D% P7 a" a) u7 c  T8 F/ x$ ^
[ 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.
0 o! @7 d! A. h3 m' H( x) V
  |! B" }6 g6 `/ H& 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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