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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! `) q* U8 N# ^8 S# N  Q1 j5 L
to do-business 2 |* b, R* R& J( G" v4 b( C6 Y
rt random 360
' k9 O+ Y! s/ [2 N fd 1
/ V- _, ]& I* g! H( b ifelse(other turtles-here != nobody)[
, B4 G8 G: A: U! h/ p3 N   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.% ~, k0 n* f5 R5 y. W
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 P2 [0 Y; _; l0 }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 R1 |' q1 i/ Z+ h, |  c# }
   set [trade-record-one-len] of self length [trade-record-one] of self8 O& C, }3 j3 B" |. `
   set trade-record-current( list (timer) (random money-upper-limit))( z5 J! k- D# ?* Y
) L# F; w; i7 A
问题的提示如下:' p# M: X* f" t& A2 C6 A

$ U3 ?' R$ E. x. I3 H* \error while turtle 50 running OF in procedure DO-BUSINESS
, Q1 ~) Y2 E; G* J5 W& d9 v5 Z  called by procedure GO: f8 q9 |  \! T$ @; I* `4 G) C
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- K/ u; J' s3 z4 V6 s$ p7 Q" u% D
(halted running of go)
4 ]' J! x1 F9 m
/ a5 d& P2 F2 g! k5 A9 j8 `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~~# I8 J- Y, L2 E2 ~: i
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
# b7 P0 ^$ L- D% \* Hglobals[( X0 Z  u, P$ v/ A8 e, S8 n/ q
xmax1 `3 J1 l3 p5 m  m& H
ymax4 ^8 B0 H( u" Q, e
global-reputation-list+ ^4 M' I- _0 R
2 i! G$ r  h- Z- \% V% ^8 o
;;
每一个turtle的全局声誉都存在此LIST
7 w4 w4 P5 {, Y3 b* q1 }2 fcredibility-list! w  [! O& D' D- w$ h; e" N3 b# N  o
;;
每一个turtle的评价可信度
% _; {5 a9 J) @; m) dhonest-service
. i! z' P$ \8 W* u$ Y/ J$ |unhonest-service
% ^3 }7 s" ?  h% D% P# Goscillation
% d8 g& [7 U$ O/ S+ mrand-dynamic
0 u% O/ M& L" N( o# {+ W) ?- D]# b( f% |- {. _; v
& l5 J9 o9 O3 ?/ f: D4 Q
turtles-own[: x) _2 \) W; H6 x
trade-record-all, M) f! ?7 ^( h: j! v  j
;;a list of lists,
trade-record-one组成3 H' }' u. G4 G/ m& P( y" w' z8 H
trade-record-one
; c) i' F, f$ t; U3 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
$ }# |: g% b! b* W; J8 w5 N6 w( L# C' B
;;[
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]]1 L) y2 p2 }( X( x$ a
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]( s8 p6 k2 }( l. J4 H( C/ 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list
/ q' c& T) n; I  Q$ z- Uneighbor-total
" O' F; L$ K+ R7 y2 h, N) T;;
记录该turtle的邻居节点的数目( i9 q8 l  O9 z0 N1 u3 d2 L: C6 G
trade-time
' }$ [/ t9 C/ L;;
当前发生交易的turtle的交易时间
  _7 F1 ~4 `2 z1 m1 v  lappraise-give) F7 j  x3 o$ t! \( B- e+ `; c
;;
当前发生交易时给出的评价
8 d) D4 ~0 `# B2 x2 _0 Sappraise-receive, Y% a; c, @8 i' m# z: U; X# x
;;
当前发生交易时收到的评价
% y7 s* g6 l" Zappraise-time+ `/ b* m! G3 y, L
;;
当前发生交易时的评价时间( m. o7 s3 f/ B; }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. D: Y/ X" }6 S% [! y
trade-times-total
4 z  S: {/ M" A! ^/ f;;
与当前turtle的交易总次数3 @! i8 H0 U" b: f
trade-money-total
& K! G4 M( [' ^/ r5 P1 [;;
与当前turtle的交易总金额2 m2 z" s  F$ o  c8 c
local-reputation" @: t: f( N% y6 l. Y; K
global-reputation. l  e( P" S" T$ U& i! e
credibility. X& @, z7 I1 n
;;
评价可信度,每次交易后都需要更新# Z8 w. c9 q% w6 i" ^
credibility-all
5 c4 z6 K5 X( t' K( x;;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; Z( r& f( f& H- t. r9 {$ ^
3 o. k, ?/ c2 ~+ k
;;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
4 o# S1 C  L8 b- P6 B& e9 vcredibility-one/ s0 s1 j6 B& A% ~2 A! o( Z) ]
;;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
1 x; v! q/ c, J: L% m1 J, f$ x) y) kglobal-proportion0 Z8 A3 O& a: W2 U/ l
customer  `  A' j* z6 d. X; \% J
customer-no
0 i* E; g# r8 D; r+ s% Ntrust-ok% Q/ H! I1 w& t- a5 J/ I" Y
trade-record-one-len;;trade-record-one的长度
- d+ A' B1 t  x( ?& }]
) m6 u3 T8 X) B- C8 S% e: F/ ^
2 A0 z! U' _3 v* ~;;setup procedure" w) U; O) X7 Y  B% M+ i& R4 q
3 B- {# @7 g; Q: M
to setup
3 }4 p. ^. e& g3 L; p
2 R; N" k# D1 T" Cca

: s4 M! z9 C9 r" k% I! a% ?& [- _5 A! J' a7 H' T8 m, I: J
initialize-settings
6 [* e( d- D4 G8 ]4 s% |7 Q+ u

! P- o# {, I7 \  D2 d5 z7 T/ e8 |crt people [setup-turtles]
/ Q+ P  C, t" s4 w' `& \4 X
7 E' H( A8 @4 B
reset-timer

# @& k' ^! j1 [) x
% _$ v1 P. l( R5 \poll-class
- z! I/ g/ U7 i& U" |

) h* N  d) f: x3 @- Zsetup-plots
; k9 ^3 f5 g: Y: a* c( E
* d6 k# L, p& j& ]$ s5 d0 h
do-plots

! a6 Q6 G! w$ g" G3 a+ Qend
7 S+ x  }; ^+ L" _
6 b4 Y% d: I# B% v0 L# dto initialize-settings) x4 L! Y+ s1 P9 B; C/ M

& N" n+ V4 g( ^set global-reputation-list []

0 K, x& ?8 u% F2 M
/ y' H+ @% S8 x7 r0 ]& z6 q8 lset credibility-list n-values people [0.5]

! w( B/ U' L. y! H* L2 P: O6 G1 x6 e1 n& c5 j
set honest-service 0
- \; p8 h1 \$ U7 _6 Z+ |  F/ e

' B, h- a9 r4 Y! _set unhonest-service 0
* F% f$ I5 G# a7 Z6 a% d: e' Y

( D; g, ?! @4 T- v4 O3 n$ Q# M; @) [set oscillation 0

* W) S6 Q7 k/ v. Q3 U- P* U- M  Q' O7 i
set rand-dynamic 0

1 w) v% Q, |  R' u8 pend& X( {6 _% o2 h% L% L* I/ c1 W

/ W5 S! D0 r4 u( X) B6 `3 qto setup-turtles 9 Z9 ^' k3 H$ w( Y  t; d
set shape "person"2 Y: h6 O! Y; {
setxy random-xcor random-ycor3 ]  Y) K- ~' e9 y  ?/ o
set trade-record-one []
. U7 V6 }4 \  L* M) g. m: W* D) P
1 H* M9 z: w- e
set trade-record-all n-values people [(list (? + 1) 0 0)]
2 y" r6 Y2 C3 ^# M2 n
# u. [, J" X: @7 n9 x" B6 v9 R% \& q
set trade-record-current []
3 K2 A2 M/ ?; X3 w5 n& Cset credibility-receive []
' x/ y, W; V+ F& I0 `set local-reputation 0.5
$ V  j% G( L, P' ^& f' yset neighbor-total 0
# Y1 l% {& v1 s2 B. V1 Gset trade-times-total 0
+ e" M, l" z$ R/ f/ w3 Aset trade-money-total 0
/ w+ f. e1 R( ^set customer nobody6 B# L& r0 x2 z$ r% K" h
set credibility-all n-values people [creat-credibility]
+ Y/ {  |( j0 S# f$ H$ e9 Pset credibility n-values people [-1]
$ m( i' i5 y6 t; ^) h% o3 ^get-color" E. |  Z- L" o& a
% z: j) X, s3 x  i4 l
end
, P) Q% k0 c; O  Y( n: e+ x' \" ?0 H5 U; a# n  K. v8 ^% [" X5 G
to-report creat-credibility' u6 K- m( m# p* h$ D
report n-values people [0.5]
# p& G+ b) N, \1 cend
/ q* n  ^, ]4 e& D/ }9 d
4 {7 w9 P% O, o  h/ P+ l. B3 Qto setup-plots
  t: r. q% w0 {) T! n  |/ G- y1 G9 }6 J: y
set xmax 30
7 h( b* H/ u7 s, g

1 w! J* x0 \% m- qset ymax 1.0

; e+ \6 v1 e& ]% R9 c) J0 i2 V; ^4 Y4 T$ A9 x
clear-all-plots

$ p- l/ z* z4 X6 i$ e+ H( \$ s  L
setup-plot1
4 z) X' b0 F2 m1 c
7 G3 k: \: C7 _  ^
setup-plot2
  y8 g1 s) M! K* g) T
$ p& s+ @! P8 o1 F
setup-plot3
5 R/ U, t, y" b% o" ~+ F+ ~
end
3 D; I- S4 t4 S$ o) }0 u8 L, d' Q/ z. K) H* E
;;run time procedures( `6 O; S9 c1 x. W' T/ G

, B) Q8 k( A' ^% l; Y) yto go1 j3 h# w7 s! O- S" ]2 W
' |% n8 a! C- F7 ]
ask turtles [do-business]
$ G% Z! U" x. a: ]. `
end' K3 K; V8 i- ^% L

3 z- a4 x5 w5 ~9 ?  ]7 J3 ]5 D1 B/ sto do-business ) E# J4 n) D$ V; n1 O( |

$ r5 {' V8 J. p6 s! Z7 |$ l/ }# D* n7 E# v: ^8 Z# E! v. `
rt random 360
- F6 X+ }1 g) J. i5 I  `  S% O

" z5 W) f8 w' i1 P: ofd 1
! x$ t! l& J! }6 Q' B7 t5 W
1 R6 Z' V* I* e6 ^2 A& P1 T
ifelse(other turtles-here != nobody)[
( u* W' D' s; o+ |

* o: g( H0 E# ~set customer one-of other turtles-here

1 }/ g  ^  f4 f* t( H- c
1 \  l! F0 N$ n5 h* ?+ y;; set [customer] of customer myself
" i+ l/ a, f1 @: [2 _
6 J* a  m5 q# K4 x
set [trade-record-one] of self item (([who] of customer) - 1)8 i) o/ u( L) D* {' p
[trade-record-all]of self! g( A: p8 c7 C" [2 N+ U
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 u$ {: g% f4 Q& Y- W2 W
* C% u' H) z; |0 m" J; {: V
set [trade-record-one] of customer item (([who] of self) - 1)& v( ^4 R9 V+ F/ {
[trade-record-all]of customer

3 ^3 u. C- r* l& o: P6 o2 z
; W1 \/ I5 c  l  P  M9 xset [trade-record-one-len] of self length [trade-record-one] of self

# e# W: _6 B; e  @" `; g* G2 v. N$ k7 L" ~
set trade-record-current( list (timer) (random money-upper-limit))
) }. {6 z* @7 ~

8 s0 P  Q. r9 T7 J' wask self [do-trust]
& ?" h; K. Q9 O) I;;
先求ij的信任度
1 V; d  M- M" `! d" L$ X( q' x; U; x( H/ R1 N6 z6 A; X3 ?
if ([trust-ok] of self)
" ~' S: K. z9 n/ l5 e; _;;
根据ij的信任度来决定是否与j进行交易[
3 s( b+ ]5 o9 N& u' N7 Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; j0 D! L' }! z7 y# [6 R$ `! W+ s2 U( {

5 y3 r( K" D  e) C[

' k8 V# v6 r; ^
8 m$ k5 u: h8 [. `# b" t6 Ddo-trade
: T/ k0 l" v- m% i$ J; [4 d' l

3 ?7 g5 t: k5 D# P6 ]update-credibility-ijl

2 Q/ D. g: J! R$ l% {- d" g% {. f' L: [7 G* k& R) f: s
update-credibility-list
# A5 d! Y4 g  X; L1 k5 q

/ D2 G- @# E+ Q* U
8 g* B* B4 _" Z4 }$ dupdate-global-reputation-list
2 ~! n7 k/ N+ J% s

3 Q9 E% R# C2 d5 t/ z: W: \poll-class

( u( G/ M, ~' V
2 T, x& W3 L4 ^get-color

* A! n  k" r; }/ X2 J2 ?- s
+ W4 ]# P) ~1 X; D7 F" \]]
1 _0 x4 |0 Y% r# Y8 G( e+ e, ^! v" Z6 q; _5 m: h  s
;;
如果所得的信任度满足条件,则进行交易
. e" E9 [  t* T/ D
* q6 {. s3 L8 s1 g1 Z& e[

1 G. O& q1 Y9 C
# H9 k4 I$ r7 S2 S* {! frt random 360

" n+ [' ~, s& Z" b& [2 n  R" @4 Y# ]4 w: H& d7 k" Y
fd 1
6 }% y2 ^" m7 @& ?% \# x5 S
- E( p- m' n0 b( e8 z
]
; S, i- n% ~+ J& G3 o% a! F
" c, e+ \! |) ~6 V/ k. M
end

/ g8 a0 X9 E6 V9 l0 ~$ N8 O& x
* ]) @2 m* }1 E7 d- F+ Lto do-trust
  N( {( V8 w. T1 Q! D8 M7 k* Y$ Pset trust-ok False
. F3 P9 x" z4 v. p
# T- N+ G: a. d# e6 v
0 q3 Y4 U! f7 q* X% J4 n9 I& o
let max-trade-times 0! _7 \% Y. G0 z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ b0 }1 o6 E" x0 x# |1 ^let max-trade-money 0( o% t1 s; F, y$ g* k
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* C6 I+ m% w! u, O& _4 k0 c
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) u) l, n( @: [$ _2 I" d9 B4 Z- H: u' E6 |" `# d4 z
. |# N6 n: a+ @# Q
get-global-proportion
% Y! Y6 l' ^7 @: w' k; Olet trust-value
1 p) v3 x: r: [9 E& w% U8 {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)

  s; a  E  g4 G, O5 dif(trust-value > trade-trust-value)0 O" \7 ]# S; C' t
[set trust-ok true]' o+ r% ?+ v$ Q  e0 p1 C
end9 Q, q! w1 i, R6 s$ E

9 {' m4 j! x/ I8 g' {( eto get-global-proportion
% a7 S  Z. M) a0 N# _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; e( y. M1 g1 d. ?$ Y5 N, N; {7 X9 r/ @[set global-proportion 0]1 R0 `, i" x9 [4 I8 m- a
[let i 0% J8 S6 B, f! Q. A* X4 \
let sum-money 06 u9 W" z. \  O/ ]
while[ i < people]1 ]5 [2 I# x# z
[0 v/ w5 b" H' k. U/ d7 r
if( length (item i) Q$ l! b2 S3 B; g. }; M
[trade-record-all] of customer) > 3 )

: o( w- d5 v, o" v* m! T* ~[6 f8 m( ^  l) ]4 _
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 k# _: D$ K8 B0 E/ H- D( r]3 t9 T6 O# p/ v6 ?8 Q1 y( |) ?" R
]
/ D2 U& E1 M' E/ m6 O" zlet j 0
; c: C1 c1 b- j& |5 u' g9 n+ F0 I* Elet note 0( o5 v. O! r# T; [5 X/ k  M8 @
while[ j < people]
: T* x) J! Z) g1 y[
( I. H2 {# Y4 P, c/ [% K4 O9 s; ^if( length (item i
, _- q' T1 K! p8 O[trade-record-all] of customer) > 3 )

# f3 P  B8 ]2 Y5 v: \[
! C1 l( p  S# M: t; n; ?  ^1 `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% }7 Q; ?: D% s. x1 g! C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 I% N- Y, N$ J
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( y! _) Z5 p0 D& H! t]' w- ?$ F' ?( v' d6 n7 C: y( }: N
]! D4 `& q" n' m7 E* L
set global-proportion note
9 n1 b* {# o( g& G9 p5 I]' Q' g3 q9 j' n4 r
end
# X, P- A$ @1 c
7 @5 a1 E, n2 gto do-trade; P$ x' [! c3 V( g6 d0 ?
;;
这个过程实际上是给双方作出评价的过程
* S, N2 ~7 I! h. w& g7 Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; ?2 s' S$ c, m: iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 [8 p$ H9 @  @2 w% i( V' f: F
set trade-record-current lput(timer) trade-record-current
7 I. K( @( `$ ^2 E. Y;;
评价时间$ H- D% m+ e& Q+ r: }. a+ ]
ask myself [* ?7 _& V0 B. R( l
update-local-reputation6 C1 d( ~  F/ A, ]! ?% F
set trade-record-current lput([local-reputation] of myself) trade-record-current) x* v$ o4 U1 o
]
) q3 C5 E1 ^- d( N3 m" \4 ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! N9 p- W7 y2 y, o5 [& c
;;
将此次交易的记录加入到trade-record-one
' X; p* D' j, S0 rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 e) t5 ~9 k& |) _% N
let note (item 2 trade-record-current )
( g. D* k5 |1 U2 _- oset trade-record-current, n+ A" a, \& k5 [' m
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 _0 x4 G+ g' `( G' X
set trade-record-current
4 i7 I& K6 [0 A0 A% n- b# `0 L2 J(replace-item 3 trade-record-current note)
% Y! h3 s! A: I. f+ D8 V* V
. B! Y5 ?( }- T+ H; E' W0 C
- |7 Y' `  S* O1 S9 @
ask customer [
0 }- l/ o# e# H; ]# L- aupdate-local-reputation
" z( T# d+ H7 Bset trade-record-current4 Y% i7 s- o. c( n5 {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 T6 t4 R1 ]  c+ M]* a9 K+ Y! b  V

  {( j0 d" M( `( Z! _
0 P( X! d) A% v; X; o3 V0 z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 l, h% |3 F6 W/ O

+ n7 J$ [: l. Q/ L+ U- yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 a8 M4 e' E5 b: h+ C
;;
将此次交易的记录加入到customertrade-record-all# g8 c' f, v- M
end1 j; f+ j' [8 {. c0 P1 d  l. [, P

. W: G" g% U/ u3 y" v- kto update-local-reputation: j/ j3 w) k* Z" V4 ]- }3 B0 v
set [trade-record-one-len] of myself length [trade-record-one] of myself+ X1 W' Y* f# Q- L& a) {

. X, Q0 d" Z1 g, Z7 T0 _! F- H6 b
0 z: v1 Z$ f2 {0 I! H% ?;;if [trade-record-one-len] of myself > 3
3 y- t4 B& n/ h$ `
update-neighbor-total' X& f# G3 m; g3 K
;;
更新邻居节点的数目,在此进行0 x; o+ t! f$ M0 L6 n9 S
let i 34 O( g! D5 c' q1 ]. w& e
let sum-time 0
" x3 }/ y4 X$ {3 i: y$ X0 ?while[i < [trade-record-one-len] of myself]
( d" [& `$ n% \) u[" B- M2 y) X! Z1 O  V
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 s- x* k' z) E: @set i
: X( w# B: x9 p3 o) @( i + 1)

+ r( I# l* e' {! p: j+ i/ ?]
8 v! T# A' e. a- d3 _0 Blet j 39 n6 J/ j" L. ]4 s) F1 {4 G
let sum-money 06 X6 U% B, b9 L2 q/ n/ _" c9 d4 A
while[j < [trade-record-one-len] of myself]7 ^* w3 e2 Q6 Y: e5 k6 F. G
[
, ~2 _8 I7 q$ Iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! P" n: S; u1 A0 x; |set j* J$ O0 f+ a  C; x$ R: o! r
( j + 1)
4 N$ i" ?7 K1 d. d
]
4 x1 F5 \: X# n, Blet k 3
9 b9 ]+ T/ c  T5 ?- D& x5 K( a. Vlet power 07 B9 r1 v$ l3 a! _/ t# P5 I% m
let local 0) s: I# d0 l& p
while [k <[trade-record-one-len] of myself]/ G; ~/ e3 v) f0 c3 x3 R
[
- C' N1 d. N% h) ?1 ~! ^8 N" D$ c6 B( {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)
+ }/ {1 V' M# S' b/ x7 Mset k (k + 1)
& S* z6 \7 f5 s( u' p' X3 G7 o]4 P0 z( D+ L4 B7 O! t6 |
set [local-reputation] of myself (local)
& t' E7 q8 {; J! |3 v# Nend
+ t* O6 i# F! T6 l! ^% U7 r/ j. b9 ~' C& E* p
to update-neighbor-total
5 ?+ U1 g5 j1 ]! f+ v( G2 V' r3 X. Y/ m- [3 c) h1 C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* Y( n; v! }- C  A9 P# S" E, B5 K( B
) p; M; P) p  q" z& @1 O
' O9 ^2 I, n: c  \" W) y8 w5 B8 V
end
6 i' u% A. t4 i: K9 X1 _
, c  y( v2 t4 v% E% B$ Qto update-credibility-ijl
5 E2 V& m7 A6 j. H' q: K) Z' }( Q8 C
;;
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。  {  W- L; w6 C7 B/ G1 I
let l 0
9 p$ v& Z8 i8 L( V- T) [( rwhile[ l < people ]
' ^( Y( T2 b% H7 h) 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
8 y8 a7 a6 I+ J! t7 x[( H/ \9 g& R8 V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 M: y( }8 D: }if (trade-record-one-j-l-len > 3)  n' d% H- w& D0 d  t
[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
. _/ I( U% G  k9 plet i 3
6 ^6 W1 q1 G+ z6 Wlet sum-time 0
% M3 {: g6 M: l2 kwhile[i < trade-record-one-len]
' Y8 P& E) l! F% u; D0 v0 T' u[
+ g! M4 b4 _$ m' p- f: P0 oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) `& ?& B8 i* T, v$ _* O8 oset i
1 ~+ R; j) u+ T8 G/ T( i + 1)
) C, a$ f9 n$ L- t1 P, q
]: x, i. H1 W4 I
let credibility-i-j-l 0% }2 w( g; y$ j4 N. g
;;i
评价(jjl的评价)4 `' \7 Z7 P: u
let j 3$ d* D* e1 ]$ e7 c
let k 4
+ H9 z4 v; H4 t8 Xwhile[j < trade-record-one-len]& T, {+ e$ ^* e
[, _' I. O1 J" S
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0 x0 b) h  j8 ^
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)0 U3 r6 ?, I; w, O
set j
  Q' W; \3 d" l- p# w. d( j + 1)

) {' y+ }. F8 H6 J3 L]
. w8 i' [& ^6 L' ]! oset [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 ))
8 p- {. t/ P9 o7 Y9 i+ L. x; n) Q8 u/ ^$ K* i
* m+ ^+ K% J0 g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, j) c2 `( \: T7 Q7 q9 T;;
及时更新il的评价质量的评价/ a7 ]4 u% A7 d/ T2 \$ j; _
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
& f3 C* O' x7 C* q( W- Bset l (l + 1)
) g9 j( n$ y$ |$ V9 ]  P: `$ {]+ s: f6 }6 Q* x, I3 a
end: W7 J  m; A0 p( Q3 ]

: ^) D6 ^; ^! T& B" N7 \to update-credibility-list
  a  [9 [% _. F# Tlet i 0" g. t7 K) S. n/ A; d) L- u0 X/ r
while[i < people]  q. E& {. q! t/ A4 s
[
  v7 T) h4 |! E; X. Z4 R, rlet j 0
3 g& y( C6 a  b+ ]let note 0
- s3 M4 _6 {- y5 @let k 0, A  P4 j# ?" M) k* |
;;
计作出过评价的邻居节点的数目3 ]( ?! \! l/ W$ T/ p# t
while[j < people]7 n% p* ]' l( c* x4 \, I2 T
[' U, M- I9 b7 @* ?1 i$ [
if (item j( [credibility] of turtle (i + 1)) != -1)
3 f! B: \& L" C1 l# Y: S3 g: l;;
判断是否给本turtle的评价质量做出过评价的节点% `3 F6 V4 S( I' A' {
[set note (note + item j ([credibility]of turtle (i + 1)))
( j& ]4 Y2 R% x' e/ p;;*(exp (-(people - 2)))/(people - 2))]

3 k+ b$ \' `  I% G0 D+ [3 n) E3 Gset k (k + 1)8 p* q7 `$ D  [) I. k0 m4 I3 S4 u
]. i8 w7 |6 C$ G
set j (j + 1)2 G! ]) H# r1 F  X
]6 P, ]4 }  P$ O5 x( F9 F/ B
set note (note *(exp (- (1 / k)))/ k)
7 ]* T: ~, F- Fset credibility-list (replace-item i credibility-list note)8 L$ j# q1 N- m* y! \: y# X$ |
set i (i + 1)
9 w9 U* W2 E0 I) B]8 ?9 T, P4 l2 [: B' s$ D
end; ]4 c+ n; _7 ^5 U; m
6 a/ o6 e: |" o  }% ]% d
to update-global-reputation-list, C" R: F0 Q% X% g! e
let j 04 }  M! z4 p! Y( t4 e
while[j < people]' E; f4 l! [% z! ^
[1 B. W# \) Z, j1 k' d
let new 0
) T- |$ w, z- `- H;;
暂存新的一个全局声誉
& w* Y' C! d; |/ _, e$ klet i 0
3 ]2 ~1 Y7 b6 j. X# {% Z( flet sum-money 0
+ @; o; C( |) Q) c: tlet credibility-money 0& Q+ q) i) |8 U% T+ }' \. x) v4 @
while [i < people]% |  V4 l* ~. H. o  o; M
[$ Q$ s5 D0 P2 {7 v" l1 {# A
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' K$ q% O8 a  d$ ^' K! H7 e
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 D6 y; A8 s7 u9 A  e! m# W- a3 Rset i (i + 1)
6 g5 O% U$ c3 h3 i- f1 D  l8 a]& p( a9 w, `( n9 W% H
let k 0
5 W2 M& u# t6 ?- F6 e  Xlet new1 0
( ^. [3 K0 @: c, B5 }& Nwhile [k < people]  J1 G1 ]4 _- S* c- v9 {7 N+ U
[
& v9 @6 R9 S9 b& t0 W( \set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
; f+ Y1 A$ y7 I& g5 [" r4 mset k (k + 1); }" x# {5 U' H2 M2 l; t: Q0 j
]6 U6 B+ P6 s- `3 y6 e+ Y" E" f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  O& e% o: f3 q8 ~' Oset global-reputation-list (replace-item j global-reputation-list new)  {1 |6 ]2 [  A" ?2 @: s3 y
set j (j + 1)! w) a- c, |+ X- q: v  H& p% L
]
* W) @/ ~/ p5 s  W. b' a2 Fend9 H+ ]3 W0 N) g5 c& k
+ I! F! ^, A% Z: m8 G5 I; x

$ H* u7 r! v; y" k: o
" k% {+ O+ o3 j2 x2 D5 f6 kto get-color* g# f8 c2 t0 z7 U/ U
- S* |# u3 q* R/ L) b8 ?6 W
set color blue

  w& T3 u' e2 n' T+ ~  X: N! vend# f  [. d7 t5 E/ @$ T0 C9 x6 p" V
) c/ \: d6 H* q* }2 x! o
to poll-class( e9 [7 I* C) M5 Z
end
; ?" q# ~* S- v4 |% d# ~) c6 e" m' z1 V1 s' N
to setup-plot1+ b" P( a6 D; p1 Y5 N
* Z9 Z8 m& m! P2 d
set-current-plot "Trends-of-Local-reputation"
( n7 e- J# [. L' Z6 t
% a- S# Z- N& K/ z/ M
set-plot-x-range 0 xmax
7 V1 z6 h# b4 z3 J+ w. r2 a

: S$ ^) {; d- o9 ?- bset-plot-y-range 0.0 ymax
- N, N9 P2 Q1 T6 [9 n
end
) S8 K# T" E8 M9 x; b& n% O
2 h$ m- D; u" X9 \  g2 b  Eto setup-plot28 a- l( B3 {; v+ d$ P" h
3 k- w- @# Z! w
set-current-plot "Trends-of-global-reputation"

3 ?* Y% L% e4 ?
# V7 Y8 f( p( N& r+ T) Z9 rset-plot-x-range 0 xmax

2 L7 w+ \( U1 r& D1 m  `5 |# V! ?
: v. P" s& x: t% T; Pset-plot-y-range 0.0 ymax

4 s5 z, i  t: Z: I0 d* s( ?end" b/ [) e1 p% Y1 J, u$ s  \0 b4 E* w

( g5 s7 z1 W" Z8 i4 I1 {to setup-plot3
) F$ k: B3 G5 V8 X: C3 }/ {7 R9 O6 L- n3 r# ^" g* [9 A% y
set-current-plot "Trends-of-credibility"

0 o& r& v0 E4 \, B" F: {0 A9 e" f# _' G; @1 [/ ^  a5 B
set-plot-x-range 0 xmax
% x  w( \' ^3 G. [8 d

* t. A' k' I: l) cset-plot-y-range 0.0 ymax

) O( h& T8 k; k3 s$ a5 bend" m% r+ H$ Y  f
, C$ j0 ^" g& ]
to do-plots2 ?" X' a0 I0 E8 f
set-current-plot "Trends-of-Local-reputation". D; ^' g: s0 H8 c& V, b, ]
set-current-plot-pen "Honest service"
& U% ^# k3 R6 ]0 A$ ^/ \  _+ iend% a9 o' D/ L; K! c$ @

" P* O' t4 p6 `* q[ 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.! [; e! x2 P4 h  x+ @! Y7 ?5 k
7 I4 |: h6 T3 b# [$ U& e# g( m
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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