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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:6 m+ i9 B  T5 J
to do-business
2 Q/ z, C# k. Z* t9 T rt random 360
! D, i0 ~3 G$ q1 v; k( R( W fd 1# v, R: A1 J, @$ u2 v$ ?4 u
ifelse(other turtles-here != nobody)[
& U$ i; }1 O) R. j0 @   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.
2 i" N# q7 f  j/ T2 Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " Z4 H0 G: |% O8 n4 k" m
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 I: t1 f, k2 Y+ w5 Z3 C
   set [trade-record-one-len] of self length [trade-record-one] of self  U8 D9 e, H% |8 n: h& [' u
   set trade-record-current( list (timer) (random money-upper-limit))( `0 K/ }. G' X- P
1 v5 b  ?$ f; p; M
问题的提示如下:
1 {( d$ X; D5 U+ {% ~
1 O  f, \) K% Z  a  j1 D$ h3 Terror while turtle 50 running OF in procedure DO-BUSINESS+ h$ D7 A* z4 e, K/ |5 g6 S
  called by procedure GO
8 J2 k, `. K9 q9 }' `& yOF expected input to be a turtle agentset or turtle but got NOBODY instead.  ^: z6 M  i5 V
(halted running of go)3 z" m& t8 V4 f0 v! e6 X3 O

7 N" U3 n( d. z5 g5 ~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~~
. d) j  P/ Z2 C! k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
0 k5 n+ B) l2 J( fglobals[
; t' w# }2 V& jxmax
  x! ?' O! B- _8 N5 u4 T$ Dymax
5 T, m" ]6 W7 W; n( `/ u, U: qglobal-reputation-list7 c- L0 p4 m% o/ S% R* K
! p, Y' M$ V) v% T7 W1 h+ j# L# q: u
;;
每一个turtle的全局声誉都存在此LIST( H$ ~5 D5 H8 w( L( ~7 ~" X3 v  W
credibility-list/ v$ d( D( e" _. g9 c/ G; b! K3 H
;;
每一个turtle的评价可信度5 ~/ Z. A' E+ U6 L
honest-service: _$ e6 Q/ u) j; W. t$ P% C
unhonest-service
9 M) n1 _& ?; @" j1 D( Doscillation
. n$ k! u6 D" d9 [! xrand-dynamic% f: l. K, e5 ?8 B' d3 o) P
]
. E& C' |$ R. I% K8 _* I$ i. x* h! ^9 p) X
turtles-own[, ?# x5 I: Q1 j8 C" L, \$ L
trade-record-all
; w( Z% C; J; R3 J! _;;a list of lists,
trade-record-one组成
, z8 m' @. ^$ X1 ntrade-record-one
# J* `+ M4 K; V% V( T. q; F$ @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 N0 n5 E8 i! ?* K( T
/ y' O! W: L1 D;;[
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]]. \. [3 I4 M. r8 B# v( G. k- @
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]
8 P2 X) y" A9 a7 y% D+ {; \/ ?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list6 O  K1 R0 W  m* k$ F3 a- \  S
neighbor-total
9 h7 _( l8 I$ L4 ]5 L;;
记录该turtle的邻居节点的数目# r( x% r* `2 [# J4 }& ^/ c
trade-time
# d1 j0 I) k6 Y+ K;;
当前发生交易的turtle的交易时间  u1 K) N+ C- }7 b( |, h
appraise-give8 P, {7 H: _5 A; ]
;;
当前发生交易时给出的评价. R: w) H9 d' V0 \
appraise-receive
" d% `/ S8 a' e* [0 r: z0 E( m;;
当前发生交易时收到的评价6 _# A$ T6 ~+ e; c2 I
appraise-time
* t& K0 N) M/ @% W* {, s. Q$ G;;
当前发生交易时的评价时间$ i' u! R% m9 o4 c) F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* ?% T" p4 C1 I! o/ J: t5 }' ?7 c
trade-times-total1 ~  p1 k: j7 W* m1 m
;;
与当前turtle的交易总次数
/ M/ Z* Y2 F; f  }. wtrade-money-total
: X3 q9 Y4 W9 N  S# t;;
与当前turtle的交易总金额
7 @+ T" O. D( T3 C7 ]2 [local-reputation+ V+ w' a5 G2 P6 {/ N  h& R
global-reputation
2 P9 Y3 U! G! i1 {7 }credibility
/ W) y' [8 \% H" u$ d3 f$ h* `;;
评价可信度,每次交易后都需要更新
2 n4 T# J: v# L2 g6 I* U6 I. J. |credibility-all
/ t- D7 ~0 @# p9 ~;;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8 `' f, z$ @# ]& \5 @" h4 b; Q
& Q3 L# h7 t1 g' x' A
;;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$ @# T3 ]8 e5 Q  P
credibility-one# a+ S' B3 @. ^6 q
;;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
; m5 s& _, E3 R: _0 v7 _4 ]global-proportion3 V8 k9 }) Z+ U; }% U6 U
customer1 g, c5 _9 g$ `) M
customer-no
% B- q2 }$ e; htrust-ok
& O3 }8 A! z* @trade-record-one-len;;trade-record-one的长度3 z" I4 w  s: T' n) [$ [
]1 ^: a5 u. M% T1 [! K
5 ~7 Z7 y; {/ Z% i2 F* B
;;setup procedure
0 @. V8 S" ^9 B( p+ }
: u( ]5 s( V- C; w, h! n4 bto setup' A% f+ D% s1 @$ _

3 n# E9 J; {  P  Lca
3 v) D6 ?# V  U2 p
, o/ e9 i& o8 `6 g; _7 Q
initialize-settings

2 c+ y" w; V  s% P# d) x/ q; t5 z+ Q
crt people [setup-turtles]
8 [& W. @2 C& a7 |% x2 W1 U( T

8 a6 o, q8 A' @6 c4 V! ereset-timer
$ F% i1 N/ q  Z2 [$ K
/ G4 r9 S9 R/ o) ~  o$ s
poll-class
4 X7 l6 S. \, j2 @7 G

) _5 P/ S& ?8 h. Bsetup-plots
- v- i" n3 Z" P7 I1 o$ b
. Z- ^9 O/ i3 L* W4 O/ K) [
do-plots
+ B0 X! U8 ^  s/ @: s3 I
end6 R( e2 e7 y, y

: o; I( T) ]8 {to initialize-settings
* h2 R  J4 E8 q' r$ h! f6 X6 t; Q, \8 w4 D3 i  D
set global-reputation-list []
4 m0 ~+ q8 Z' @, |8 V

! i. L. }& X0 a  k  ]) ^' Gset credibility-list n-values people [0.5]
0 {4 |7 u1 Z4 {4 N$ F

4 A3 f4 m5 i: H$ b0 z6 m5 I+ g8 rset honest-service 0
% G9 z& K- @) s1 J5 y* i, J
* a8 D9 o4 v0 G
set unhonest-service 0

- W2 Z4 ^7 }, z4 q# D# I# W0 d7 {8 w6 [
set oscillation 0

/ \; ^; j2 u0 x- M! ~9 K  s
3 o& h( d3 X5 O; F1 C- m4 T4 U1 C) yset rand-dynamic 0
" l7 {4 H- A. O" W0 |
end
; a; V' z7 ]3 V) ~: n: E& B6 m( O. ]; m! X
to setup-turtles
5 `- P6 h1 ]4 X& \# |% \$ K9 X  _, mset shape "person"
" h! K- R5 V0 J) Z8 Psetxy random-xcor random-ycor
% p9 z# P& I- Y* Y& Pset trade-record-one []# x4 R# V) \) P  m$ T- h" a. B

! D0 H  P; Y0 X( E9 B+ K9 pset trade-record-all n-values people [(list (? + 1) 0 0)] ! I  b! V' B6 R/ ]/ }& Y2 }

* v) l' h; ]  b6 m$ qset trade-record-current []5 @% S3 |- N9 m6 ^3 O6 O6 h/ p. r1 }  `
set credibility-receive []$ u! \* n- c# C' V5 `; b
set local-reputation 0.5  V1 U! g7 b+ d- g1 c4 I
set neighbor-total 06 @* N9 c9 X5 K6 z/ C7 K
set trade-times-total 0
1 c) ]$ R! P, X: j' iset trade-money-total 0
  d! ?  g' }8 Qset customer nobody
$ ?3 K  Y( |  }- u8 mset credibility-all n-values people [creat-credibility]1 W) m1 i% `8 W5 z8 L) K
set credibility n-values people [-1]
. r2 Y# d9 `3 Z7 \- ]' y* u. P1 Vget-color9 U9 ]; U  t! ?) ]# h' ]0 D+ U
* i& S5 J1 Y$ C
end
* O' |8 X1 V! o
2 I& @( b( e5 B7 H" h* }7 j8 Kto-report creat-credibility
6 ~% U, }8 F' Ereport n-values people [0.5]' S' F" n6 x3 b- ]. T9 L
end
( t, Y6 N3 _1 U) F' }& _! {; N) V7 T9 C; f# a: ^* S4 O
to setup-plots8 Y8 Y. W' V. q) U

+ v2 g# |! z; m( Uset xmax 30

6 H1 O& D' A- N9 I2 K  W& v2 n# b6 r4 h8 d6 u3 l6 e2 I
set ymax 1.0

6 R* [4 r5 z9 W# s, k
/ b" f1 K- z4 s* hclear-all-plots

' b9 o4 c# v) Y0 Y% C
, s8 p2 x3 q/ g% n, o. T3 ~$ c/ Csetup-plot1

/ G9 \& i% \$ G! j0 D& V+ t
1 x' _4 l3 p6 X/ u5 S/ D. p, P* Psetup-plot2

# y+ V. j/ O3 M  c) f! }8 k; R4 R2 U9 k5 d( ~
setup-plot3

, K: g  C, E/ i) U& tend
' Z- F7 ]( u: q
; `/ w( h6 ~6 x2 ~8 R;;run time procedures, z% \8 |7 S. l% }0 c

/ c2 A; c$ t; Z, l. Cto go
9 F; \2 @6 D5 K4 N2 d7 @8 J# V8 O# t& ~/ x# O
ask turtles [do-business]
7 u; g) I) H' _
end! N+ h1 h4 W$ K8 L, x% t$ o) w
6 C' a( m5 q% F$ F% J( R$ _
to do-business
# r9 L7 `7 H% h+ I# ?2 g& a4 s' q* ]

3 V( P& y) O: M2 i& f6 `; i& Y% Y! R( ^, ~' Y
rt random 360

7 J! x  K, Z- t) m! m7 c8 f' ~  [" Q, B- ?! Y8 v2 Q
fd 1
2 t: B" e- V% _, P  q+ b3 e

. e1 _5 g2 B# l0 qifelse(other turtles-here != nobody)[
1 |3 B9 k: _0 C" s8 R7 l

4 j+ T9 R* e* x% ?+ Hset customer one-of other turtles-here
& m5 Q& x$ ~2 v+ M
; O2 G( H; I2 D: Z. d
;; set [customer] of customer myself
0 q% }& s( b, v: G4 k# e4 Y- i
2 m& b) r9 r3 ?1 J1 a" X! P% F
set [trade-record-one] of self item (([who] of customer) - 1)" Q, d2 T( p- D; f8 a7 K. u
[trade-record-all]of self
; Z- s* ]0 |3 M$ C" {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ K, f: F3 e2 q5 B/ Y. G

9 q. d7 l. A2 P" {+ f' vset [trade-record-one] of customer item (([who] of self) - 1)
/ A/ d! _+ r5 M" \[trade-record-all]of customer

  o( T5 d' A8 t5 N5 v. F/ w
7 ^8 }7 T( x+ n3 g( O; b- \set [trade-record-one-len] of self length [trade-record-one] of self
- e6 |. l( M9 {6 N' s( H

$ b- g0 h2 N% n. H2 R9 d9 Dset trade-record-current( list (timer) (random money-upper-limit))
. B$ h) p+ \" d. g8 o

8 i0 a4 S, s0 X; p9 |ask self [do-trust]: i3 i" A$ q9 n# \% s
;;
先求ij的信任度" e# v: k& n6 m- ]& b+ O
1 G) W( n% f6 Y' i2 K/ n6 V
if ([trust-ok] of self)
8 W% \+ E$ z5 e;;
根据ij的信任度来决定是否与j进行交易[5 u6 b( W! y+ x3 _9 P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ o( H+ x3 C$ j0 h
/ |* q  O+ H. m" Z/ u[
' v# C2 O0 o5 B8 B% Y
& ^' Q. y. c" W  w: c' [0 ]" a
do-trade
4 y9 A2 c8 [. b2 {" b
' B1 S* V) q- G4 y9 L
update-credibility-ijl

* ^! Y! k$ x  f2 N- j* e5 {$ v4 J
, Z  D9 M5 b$ d' b' F5 `6 D% `update-credibility-list
; s9 s. @0 t5 a3 x/ Q# T
0 m# I0 O7 `# F/ u
0 m3 U& @. K" ?" u% f
update-global-reputation-list
0 F- Y9 _% X& D' O9 O

* E  k) n. d$ w" \  I$ tpoll-class

" T/ A2 l5 i: A5 K+ G6 {, }* C  W6 c. S
get-color

# N" [0 d6 s7 @0 E) G
# q: o) z5 J0 \* q8 ]]]+ h. ^, y1 K8 ?) B; H# G+ P' `

4 m& Y0 R3 U" Z# ~% S6 o+ I4 w) Y;;
如果所得的信任度满足条件,则进行交易/ }3 ^  `2 U/ g3 T
7 ]# }9 Q; f2 y* L5 l; c
[
" `* J' g( Y, u: q

. i& ?; P1 T9 {# r- b$ e7 N% T, x0 Nrt random 360
: H  T. }2 H) m/ m' x9 _
. p, N6 O! R" \% w  e+ K+ j9 N! H# X
fd 1

2 H" x& s) n; M9 c7 t( O0 T: H- P  u+ {' ]: Q
]
4 A2 a3 y" |" U( U9 ?; f9 Z' [
/ U/ }" G9 k4 B5 O
end
5 N% m2 h) X2 p6 g8 r

- r6 F- b& p, b  q0 gto do-trust . V- e6 p+ I* s9 ]
set trust-ok False
0 e2 }1 U/ J2 K5 ]$ m( b' S* ~0 G  R' m3 s1 q
% c# @8 i1 t+ _: @$ W
let max-trade-times 0
) h) U# U* E! ?9 Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 n9 K6 {# }! F) l3 H
let max-trade-money 02 I- c$ t, j3 }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 h$ M! v- L7 H, ?! O8 v. alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ W) y+ F# b; v( T

! s# X- z$ e$ A. {' i& ?9 \* i

/ t$ x8 v( C, {$ `" L( ^( Nget-global-proportion9 \% y" A4 ], J% n7 b
let trust-value
9 }3 ?7 O4 \3 i& k. I* qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- X7 H8 d6 {' c& T% t9 z: }/ a
if(trust-value > trade-trust-value)
# M( V6 K5 f: b; i4 D[set trust-ok true]+ s$ s: `; _! M; W
end: F; n/ f3 |. C  W2 \0 T2 l( r

& }) x0 u# p8 M5 Y4 jto get-global-proportion- v4 [- C3 \) }' t$ f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ h5 D' r3 L$ R( E- ~
[set global-proportion 0]7 K! ]9 t; m1 H8 r6 S
[let i 03 S! h. A5 E; l9 u' [
let sum-money 01 }$ \; l7 y7 j1 V- q
while[ i < people]
) ]9 q' n+ b) e( B2 H- B[( ~! @- J4 u! ?
if( length (item i. z* o( T4 B: B) n/ j5 b% C
[trade-record-all] of customer) > 3 )
6 h! @( l$ q4 K9 J8 r) b1 ~
[
% G9 e8 L  |7 T+ |" tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 @2 L8 h+ F* O; Y/ g
]
$ m& N, G! q- R( t( y]
, b2 k0 I/ ~4 k" X/ zlet j 0
, _7 L3 k) x7 \; K+ e) u9 Elet note 0
8 @7 \0 P5 K* S" x0 ]) w$ x7 Zwhile[ j < people]0 ~  ~+ {' i; S% f5 ^- U& z
[9 N; k1 z, B. @
if( length (item i
& W* [  N+ z, B7 T[trade-record-all] of customer) > 3 )
+ _0 S( X. w' g
[" j4 ^" K7 p: \: W
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 v) {" c% s& R
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ E+ Y6 J/ z$ F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 X1 e$ i- n% @/ Q. O3 K6 o]1 j  c) e7 g0 z' T+ G! L. Q- Y: H
]
% Y+ C. Q& w: w& ?( {* h: rset global-proportion note
, m4 C# s$ q* V+ ]+ ^]4 r- k2 b$ R! j( h( m
end& K8 V' N  q$ F6 J" z& O- L& B

2 J0 S) i6 S; H) @to do-trade
: L/ Y0 k- |8 _$ l) W& o;;
这个过程实际上是给双方作出评价的过程
$ B  k9 b$ ~# S- ^/ h, Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ T6 D* J- M  L3 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; d/ \: K: w; g8 C4 _
set trade-record-current lput(timer) trade-record-current2 [  v- {" G) t* _# z0 j4 ~) k7 ]
;;
评价时间. E  n/ M* f! o, f: I5 m0 o
ask myself [1 K, J8 E; Q' H
update-local-reputation
0 ^: S' e/ h( T8 x: Oset trade-record-current lput([local-reputation] of myself) trade-record-current
2 l6 o' }  n, Z) z, I/ m! k4 _]
+ w, k  j; I3 T$ F  A* ?9 E3 [* y+ Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 P8 N$ {4 n  \8 j$ j
;;
将此次交易的记录加入到trade-record-one* ^9 a4 X! X+ z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( `. g6 H. K* B. N9 G* ~8 M
let note (item 2 trade-record-current )  C6 v  E6 s9 T, J
set trade-record-current  w8 J5 f& e4 _0 U; t
(replace-item 2 trade-record-current (item 3 trade-record-current))
4 z% T; i3 o4 {9 P- D; [
set trade-record-current
$ k: I0 N1 ^2 E% D(replace-item 3 trade-record-current note)
) I2 L7 L2 G. u9 P7 Q, x- N- w4 C0 [8 V% z: h) M, C& Z( T- o8 D

) u% @! E1 Z: h" A8 hask customer [2 g- X1 O9 q; z
update-local-reputation
) B$ x% Y7 F5 a% }! L1 Q* Kset trade-record-current/ R! T7 k0 z' h9 L3 o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# S) ^! h; L* F
]9 c4 W1 e- c6 p7 |; c( \4 O  y/ E
" q% B* K/ h8 R+ O; s
  Z/ i4 D2 ?- H  s8 f  H1 P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) `: R+ |7 s8 N% \0 }& \" l2 L
" ~3 {4 f  k# C. \0 n; _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" R8 q$ \: U& \;;
将此次交易的记录加入到customertrade-record-all
5 y+ V6 L; \7 R/ i4 k% U* dend6 k. W6 L1 L: S* i
- n' M& G8 y% r* V; d0 y
to update-local-reputation" o/ Y* s6 C6 a/ v' d* D
set [trade-record-one-len] of myself length [trade-record-one] of myself
1 x7 I1 a# c5 y5 e: Z3 Y
0 g; P1 T, b* C; k$ r- r. \3 _& N- Y$ z/ F0 w' l
;;if [trade-record-one-len] of myself > 3
% D8 G6 [# d1 o' x) p  `
update-neighbor-total
7 x7 _! _" E* s  `2 V  E;;
更新邻居节点的数目,在此进行
3 `) p0 U# U8 ~let i 3
$ v; N& ~3 b% h7 \) g: wlet sum-time 0
! O; E' P* B: k4 Z, t$ uwhile[i < [trade-record-one-len] of myself]$ ~6 R8 a. s( m$ B  Q& O+ w1 m
[+ m5 k7 ?0 K0 k: s8 ~% L. Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- Z/ |5 E" g/ |2 S8 i2 U  w, O
set i
9 x$ e  U/ {" y$ H% g- O( i + 1)

, _* F  L8 h8 L- F2 F+ p]
/ ?* U5 l0 D6 [/ a' G3 h2 vlet j 3
' w2 F5 w0 g( ~6 Z0 v. S2 h7 [let sum-money 0
# V1 @8 z/ f) N/ }) u& hwhile[j < [trade-record-one-len] of myself]
  {; c, Q/ B" P, \2 E[
$ @) P1 O2 M4 a! K  B5 E$ |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)
/ M7 o" r2 U5 ]; S6 n' a5 ?; Y# y( eset j" M- N2 Z* c' L% n  c, {2 F
( j + 1)

* v9 W" U" m7 S  K]
& W9 G$ u  v: b  n5 ]let k 3* b* u0 E. \6 E, U
let power 0. u4 O$ Y- y+ \3 E5 Q- ~) J
let local 0) g' n6 @: W* H" Z" m6 W
while [k <[trade-record-one-len] of myself]
3 d! K: ?- x$ q6 q: k$ g[. Z! B( j9 `: J8 t8 v$ w
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) ; X* o9 h" [) A1 u; |
set k (k + 1)
( g0 A) G' O4 m' d* ?& ?% F]7 f, T  N' v! H" S! k' t  @  u& r
set [local-reputation] of myself (local)
' V  y$ S) I0 T; y% Pend+ p- x1 {$ L4 S% d! }( N% @
! Z1 u* ^8 S* j# ~$ v( v2 y
to update-neighbor-total
! o& W9 ?3 b2 }6 n) q. [! G, J5 I  R5 O2 b! i
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  ~6 l: |% P: a. P) m0 d* P3 |) [" i
( V0 P, B. H5 @$ {! H4 s6 q* W

: v1 B3 K1 ^* n4 cend
* ?2 t! w  N% F9 j# |7 v; E& j3 O1 D* J% j( Y
to update-credibility-ijl
6 R  d+ S, g- z9 i- |9 e- `* S: J2 m9 \5 E7 E% C2 A0 x) U0 o# f
;;
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。
& x& |* @1 j: H$ l% M  C* l$ ]let l 0
/ A* y1 H+ |) ?* twhile[ l < people ]) K+ l  F; }$ b/ C4 O( y
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价6 N1 P6 ?& U, I
[' W" g- S( q! Q% z' _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 }( g3 r7 ?( B; ?( m
if (trade-record-one-j-l-len > 3)+ }4 q5 \4 R- u; k# Y. G
[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
. w  C0 [/ U4 Clet i 3
: ^/ c: u& C' O# ylet sum-time 0( `6 E7 g7 \4 [+ S
while[i < trade-record-one-len]
( @+ u2 @1 c: G% P( q[2 ?: `# G% F3 q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), C# Z7 i5 ^# C* z6 V; d% I  J
set i
: u, x) [! G" L- }  h( i + 1)

3 O8 }0 A; a9 @, c# u- ], w]
- \& x$ X6 v: z( r3 g7 ?let credibility-i-j-l 05 s9 n4 l- M. {4 r+ J" R  P) D
;;i
评价(jjl的评价)
  [* m/ t4 S' K4 ]+ ~0 T' t8 Clet j 3
: e2 G+ ^5 X  q2 ~% m( ylet k 42 u+ G7 U- i- w3 o8 O1 S
while[j < trade-record-one-len]  u1 K2 r( a5 ]; Q8 X- J8 P
[
* m' @. k4 A. H1 ]/ l! D/ Dwhile [((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 G+ b9 I- f* L/ B* ]& W7 {& _
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)
5 Q) c% @3 q! i8 ]% Dset j
9 F2 h! E. s1 B' R* u( j + 1)

# b: b2 [9 Z% [0 ^0 F: A3 c) []
8 A0 ]  q! T9 O+ i7 j6 ^2 hset [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 ))
4 J% o' k, R& _* z' H
' U( M: S2 O2 x5 J# J2 |2 t

1 i4 ~! Z& [& d8 C  _% _let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 }3 `6 S' C; v4 l6 |0 A
;;
及时更新il的评价质量的评价8 F1 R4 {2 `) ]+ g* V, K
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ S/ P4 O' N# E0 Dset l (l + 1)8 B1 ]$ E! ?/ I, a# P3 O
]$ E: q: R1 I% M( |; E. M$ Y
end
5 C- s4 I# U( J% J6 r* }$ n+ o; A( `7 Q7 J8 t3 ~$ `
to update-credibility-list' E5 Z) G- P# t" a
let i 0* m, p1 p, H$ n% U( e) L: f
while[i < people]
/ s( l) a! T0 ?# l1 k5 ?9 N3 s[/ }5 c) V7 j3 q1 \% F: b+ m
let j 0' \4 x& |4 x7 }; X) D" K
let note 04 G1 J1 @" S- B  O3 u
let k 0
$ a: Y0 c5 k, H, q% H: z# F" X;;
计作出过评价的邻居节点的数目
$ b# {  |& ?" E2 M( }$ J* \while[j < people]
- F4 t$ E. J# L) \[
4 w* n7 c( W7 ^5 |if (item j( [credibility] of turtle (i + 1)) != -1)
" N( p- k, r8 H, q;;
判断是否给本turtle的评价质量做出过评价的节点5 L& S- y* }* P3 w! s2 T" w. P
[set note (note + item j ([credibility]of turtle (i + 1)))
( w$ M3 ]/ m9 k8 h! B. m;;*(exp (-(people - 2)))/(people - 2))]

) l  b0 z# ~# M( I& Jset k (k + 1)/ [3 ~* ]' _3 ^& B" N9 D) R* e
]
0 `: c3 h2 ~" Uset j (j + 1)
+ p# K/ m3 J! U8 X( ]]2 a' W) ~. F# x  I9 ?7 W/ X& n' N
set note (note *(exp (- (1 / k)))/ k)
1 i" Q) y1 X  {0 Fset credibility-list (replace-item i credibility-list note)
* k: v6 m4 S4 a' t7 r! K$ Aset i (i + 1)/ u( i- c! ]  e/ X% j/ K# U6 C
]8 i- E! u: H% f4 j0 N
end! F4 z' g. h" T0 [

6 i8 Y1 B" [/ G- x% _, ]- |" wto update-global-reputation-list
: f$ |6 i% `7 Z' Z( Xlet j 0
$ {' e1 h! {& T; _2 xwhile[j < people]1 o" Y4 p% N, |3 [# K% @, W( A
[
1 r( s6 B, p0 A& Ulet new 0
) ?9 B( l& x7 k# m: q;;
暂存新的一个全局声誉, c; S% \* v  _& o
let i 0
7 H) k& \( x! slet sum-money 02 q9 L$ y  W2 I+ s' r# Z
let credibility-money 0
4 [) P$ d7 w# z: O8 Y$ n- Ywhile [i < people]' j7 o5 R4 z8 a4 u; |0 k
[2 t9 j8 A5 n" ^9 h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; b' T' G+ X1 t; Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 H: W# B% K6 [8 `4 z/ g- x2 i: _
set i (i + 1)
1 a8 V5 d7 S3 u4 n; {: u]
6 Q) Q. K5 g8 i+ p- O9 D3 o- Xlet k 0. G* c8 V' ]6 F; \5 k# h7 c- x
let new1 08 D6 B. l- T3 z) Q( k( s
while [k < people]  _5 D9 L6 K, V2 T  s" D, q
[
% E3 H0 W7 h, C% H8 dset 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)* w5 O! ]2 y3 d  y  p1 q( k
set k (k + 1)1 v" [' T5 ]6 H9 ~4 J' j, |0 ~3 h
]7 f, Y9 k' E" d  Q7 }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: W6 p  B+ U. Q$ X. r1 Bset global-reputation-list (replace-item j global-reputation-list new)
5 M/ _) f8 W4 mset j (j + 1): G/ r0 Q2 W2 h5 v
]9 R% d% I3 Q. C9 F1 |
end
/ V1 g# v4 h% ^% q" \! V! {9 w9 G3 o4 p5 Q

$ w; ~2 a& ~0 W) l2 k% x2 E$ g5 k
to get-color9 a2 s+ R  U( O( H) }0 W$ P

9 o* r2 z4 Y; }6 i' kset color blue

$ l" h; @/ `8 M: G! Vend1 D& }" f2 y* l, F! f, A5 ?
; p! I, u  W  e1 r" d
to poll-class
# g3 }& F. [9 `# Mend
) m, s& X) X. X/ H; U" }/ b; I# d: W; }3 R/ ]0 N2 _- |
to setup-plot1
. k1 O; B' e. x& o: n1 q- E7 I+ t3 r4 g; @9 O
set-current-plot "Trends-of-Local-reputation"
/ P5 K. ~0 B) h4 ^) J- U

# Q; g1 i, V5 m. s, v8 R4 r' [set-plot-x-range 0 xmax

# m% Y3 q) _) M: Q7 |
4 x/ l0 R) }- H2 `( z6 [1 z0 zset-plot-y-range 0.0 ymax
; i0 c& e# d* ~% e
end
- r6 @" T0 l; L5 @, A2 }* {* @; q) j* ~1 V, G
to setup-plot2
; z$ U* e- X' U# z& d5 g2 u
  e8 J' \4 S1 f3 Eset-current-plot "Trends-of-global-reputation"
9 j+ P$ h* J2 a  o2 {
1 n+ R2 k: p$ K3 B! [6 l# s7 \
set-plot-x-range 0 xmax
. q# l+ _; s5 ~& D7 g3 t# Y0 H
- l  m+ u( e- }, v' m* M. n
set-plot-y-range 0.0 ymax
) ~' n/ \& x7 |2 L# t2 m$ Q
end; Z2 x; e6 P; u9 a

; b( J- w/ ]1 D! ?- P- U# }1 n& uto setup-plot32 g5 ^( i2 g# W% Z( X( F  S
* s, }4 i; k8 g! O
set-current-plot "Trends-of-credibility"

  Y0 I' A* T1 E, J# I
% Q$ B. \2 e. o5 mset-plot-x-range 0 xmax

* v  O9 S1 @  h0 J" _+ _
* Z( I; `* k3 {) H# J, q8 Uset-plot-y-range 0.0 ymax
$ w0 z! }( l6 B
end
0 u5 H2 C, x6 L+ |5 K6 S$ r2 ]2 b& C' W5 i* U8 ~' Z& F7 c
to do-plots
" w, s" q0 m( ^, F4 N! h" pset-current-plot "Trends-of-Local-reputation"2 ^  f3 R/ ?# C
set-current-plot-pen "Honest service"
2 |, ], Y: ^  x, g" d& ?! D7 \end
8 w. a! I" Z& U
% X6 o) d( G2 N& p8 z/ J; }. {[ 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.* c3 P8 r6 o8 Y' O4 N. s& L  _

% G, O! b7 y. Y6 V. F& [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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