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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:5 F, _& n9 a% T8 P9 B* w
to do-business & |6 n1 ~1 _- a' [6 \
rt random 3607 }" S5 Z3 I4 M2 G. N) V1 P
fd 1
3 Y- M9 C9 W- Q& b- H0 @' l: t ifelse(other turtles-here != nobody)[) i) J! w3 Z- j, v
   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.
1 E% t8 h+ T; P   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ M2 R9 o' }- j/ V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 Q7 g1 F/ t! y* P   set [trade-record-one-len] of self length [trade-record-one] of self
6 A$ ~: j$ i9 p- D7 O6 F   set trade-record-current( list (timer) (random money-upper-limit)). u' P2 a- w7 ^  }0 S' ~0 x

/ Z1 [0 @, d7 G* q2 B: l问题的提示如下:
. j+ c7 p( j1 f0 \4 {, }( q4 s, n
error while turtle 50 running OF in procedure DO-BUSINESS  }! q  r1 G& ]
  called by procedure GO
: w8 I1 h1 j$ @5 vOF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 S. i6 }9 |3 V4 {. }' W$ P& m2 |
(halted running of go)
7 [. s( Q$ t: y" H& ?! c; S) n
( A% _: y0 n, a% Q0 a' x( ~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~~3 D( ]8 m0 L2 u! v1 E  ^9 U
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
. |  S1 `1 F; \$ Eglobals[% o. {9 ^" f: z& \. O
xmax- H* T. d- D: @7 K) j9 U7 b
ymax6 C. \* }5 W5 q) Q" R1 @2 h. B" x
global-reputation-list1 C7 Y3 I  u/ x& ~& f. J4 B  k  V7 Y

* O' _& Z* A/ H;;
每一个turtle的全局声誉都存在此LIST/ m" j! @. H$ C4 n* H
credibility-list& b/ `) T2 o: b0 a1 _0 C4 t3 D
;;
每一个turtle的评价可信度+ B) x$ e1 a, J9 o; z( z' j, g
honest-service
- H( d' Y1 F2 Xunhonest-service
$ J! z5 r* w1 v6 boscillation
/ U+ r  H- e' D# O5 V* irand-dynamic
, K& X' u% G! k]
, ~* U' p/ q) B. M* ?8 Q/ ?
/ ~, G! T- N- [# l- E3 Oturtles-own[
9 \. O0 U9 q! b2 |- M. xtrade-record-all
" O% \8 Q- M/ J$ u! O$ B;;a list of lists,
trade-record-one组成
* r8 j1 `& f7 u  `! O# T' Ntrade-record-one
( k: S$ q6 I/ W/ V0 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
) _+ ]6 G$ c* P  J$ F( G. K' N, A6 w- \: s
;;[
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]]5 F2 _! C/ D9 k8 z; I# u1 e
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]) H' j: t6 z& 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
# C4 s' ~# Y' @0 I9 U9 hneighbor-total& A6 T  p7 v1 N" K( n% d6 \8 _# V
;;
记录该turtle的邻居节点的数目
1 k1 q( q1 D  z2 Y, V$ Ntrade-time7 q: ~% e( e% O+ E
;;
当前发生交易的turtle的交易时间
) Q3 W* ^% |. O: zappraise-give6 [% o% Q; a) N, v) u- @9 F& P7 I
;;
当前发生交易时给出的评价) E% ?7 m8 Q  n  o, \
appraise-receive$ ]/ i7 z1 n1 a; t+ M- F
;;
当前发生交易时收到的评价
& k; t' L. r  Eappraise-time
( r  D' @/ Z' B! l( r, x;;
当前发生交易时的评价时间9 r! ]" ^" f3 d1 W. K, {$ L( M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( C9 G) A1 x6 q& p) Htrade-times-total% r9 V8 }9 V+ e, J$ t' B8 [5 V
;;
与当前turtle的交易总次数
7 d. c9 v4 _) Jtrade-money-total
, x! [3 q8 o) C" T% _;;
与当前turtle的交易总金额
) R7 |8 \. P" X+ ylocal-reputation
' v" Z* J; a: a. y1 G6 Wglobal-reputation
4 T7 y$ R3 Y5 D0 Y/ `4 ?credibility2 B4 B+ j9 ?2 ~, H, i
;;
评价可信度,每次交易后都需要更新6 a& ^* ^* a+ @1 t. ^" i
credibility-all
; M- J7 c: ~/ I$ V1 u;;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# i9 M* N( K) g- |) u/ i

- ]* s5 A7 q: 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
  R  c: ]5 z8 Qcredibility-one7 F% r' l% s% k( K* l8 \
;;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: K. |) [" J2 |2 }0 {# W% f* r
global-proportion0 m! n8 p7 o1 v) t( m
customer0 N( P1 l& v) r) X: h
customer-no+ a2 V; {0 @- |2 P  {
trust-ok
0 k: P! T. _3 utrade-record-one-len;;trade-record-one的长度
$ V9 h% @  z  _% O* |; G]
3 q# X; o1 a1 q- G' F7 `8 b5 H" S6 w' C4 Z  g  n$ P0 ^
;;setup procedure
. F7 E8 D! f" K) N- z+ R8 `, O, s
to setup" n* ?& t* h1 q0 C

* n# ^5 Z  J( b9 T- c8 Hca

* w6 v3 q3 q9 g% Z, _
8 V' D! I+ W- A. @3 H- g* P$ t/ z' ]initialize-settings
3 j0 V! T9 k; n1 N( N1 b
% N. f! s/ P$ K  p4 W
crt people [setup-turtles]

, s) q. h+ i! W7 r1 b  P& D: ~- C  o5 N1 E* D% E
reset-timer
3 z0 C7 O0 Z( f, v! i) K2 f

2 `8 `4 s* K& a0 H# N; J; upoll-class

) |) j  [0 h8 f1 {0 k! ]* c. n" t2 Q
setup-plots
: W- U2 |: s5 i
9 m" Y6 y$ H& W
do-plots

2 @' K; q. q  d; f% W+ A0 H$ Mend
& |. [! I, @$ Y0 ]' Z
  P5 \# ]4 e& B( c# Zto initialize-settings
( u& j0 d' u& R" e2 p( |, u  [# R6 e5 \, {( ?  g
set global-reputation-list []

/ g3 u$ j6 o( z7 L& d, Z0 g
6 x& r/ [0 k5 _  A0 ?set credibility-list n-values people [0.5]

+ b6 ^4 ~1 b7 m( A( E6 S- F, c
! v) |( ^+ t$ Qset honest-service 0

' B+ H! J+ h6 T0 G) b$ n/ c% z% s6 p  P
set unhonest-service 0

5 g; a+ b, C% m6 |- d) e$ k- o9 b) j( I* Y  L# \: [6 E
set oscillation 0
' `& y: d0 v) x* p; T% [! w
# @  t, {' s  }& v1 e8 `
set rand-dynamic 0
, ?$ t5 y! R( O5 d
end
4 B5 N& z9 T- `. [
' j2 G1 V' |) B" Sto setup-turtles ; ]6 m. s' r0 a5 \- s3 o# g5 o. m/ M
set shape "person"
( J7 r1 w' u; C, v( Psetxy random-xcor random-ycor; k5 G, o  x) Q; S
set trade-record-one []. M$ o8 i7 p" A  M4 Q) D
, k9 ?) B, j- B7 H7 ]* ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
" N: M4 v0 k1 e: L1 K, s* m
' \& w+ Y+ R5 K8 ^' x3 L( J
set trade-record-current []
4 f: X) }( u  Y# Oset credibility-receive []
3 p& T; f* x/ y# |8 O5 S# Lset local-reputation 0.5
, H0 O4 [, x8 Sset neighbor-total 0" r6 s5 G, }8 h& b
set trade-times-total 0
  ~4 o3 P6 A8 r2 ^$ T7 |* O, fset trade-money-total 0
' Y8 y$ D9 W( N( m9 Z4 u. t& I. ]/ Oset customer nobody
4 |' q  l5 M! Q7 C' [& w. ]* \$ H& }set credibility-all n-values people [creat-credibility]
4 K& }1 i* M- n; x- y( R4 Eset credibility n-values people [-1]
1 n0 g% R$ W; H# x9 a. Sget-color2 w8 _, \) N4 V2 j
+ f7 H, L/ Z! @; j9 Q
end5 f2 W" C/ a$ l$ j& l/ ^9 S. K

" U3 p7 e; o# Qto-report creat-credibility, x* p1 B/ Z/ b: L/ N
report n-values people [0.5]6 z' a3 ~+ m3 g; E
end# y1 o7 g( \4 w/ \, E2 [

1 M( ?& S. i( ~8 |to setup-plots2 ]! V, P* f5 w: d3 u

1 k# U0 c( [7 w, w7 u% C: oset xmax 30
- r# |- S! D1 B' {" j8 E
& j; [- K$ C- x9 P: K. c
set ymax 1.0
: \" M; l+ K/ `

& u  b3 I" \. h8 zclear-all-plots
7 c& j) i4 m2 R( s8 `
3 h% K$ \& B. u  R( |0 l5 \
setup-plot1

+ E# t& L1 w+ a* A0 G( ]; b4 B
) A" ~* K' M! C! rsetup-plot2

( V( D9 t! u# T0 A# t5 c4 j9 x& l/ }5 i3 I  A1 z
setup-plot3

! P' D) s6 p! F8 ~* e$ N" @end
0 d/ y/ \+ r6 u+ E/ t. l5 _9 @9 N/ a1 L% q; V  i" I) ]
;;run time procedures
& C$ j( c" F* G, y% X6 x4 ]
. G' u+ N1 o7 }to go
) u" b, P- M, s; G$ Y
% w/ m9 m* P* l0 e" gask turtles [do-business]
2 u; j4 s- r: a7 ~( P
end
# R8 S- g6 t* f' I
! ^" p, @. U8 t# K0 Oto do-business * j4 e, D) l. B
% u3 N1 c  y1 }% v/ d+ _

$ z. [/ @: Z/ ^* }* K( ]# q* ~rt random 360
; G' C" e/ T- g: g. g
* N6 d  ?- v' F' s
fd 1

- C7 j, A" z# d9 l
6 P0 r) a8 B: f9 Y) k2 d) Q& C/ jifelse(other turtles-here != nobody)[

& t4 }# c: l0 u# I& `' Z. h' W5 f+ l  _  z8 ~
set customer one-of other turtles-here

) a0 O; l, `3 n2 |# Y+ p
0 B8 ]7 d7 X. ^. H' s;; set [customer] of customer myself

+ V) k4 u( p5 a" P1 M5 r- x2 Y* q- q. s: K
set [trade-record-one] of self item (([who] of customer) - 1)
  D8 L+ n+ i  W1 b0 A[trade-record-all]of self& D! `( e2 w  ^8 Y9 J
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ x2 ~9 L; L* y# K7 Q$ Q  [, l' d: F) m8 f* c$ E( |7 d4 u
set [trade-record-one] of customer item (([who] of self) - 1)
0 Z; ^- ]- _0 s7 r& X6 M[trade-record-all]of customer
5 J. W9 K" o; E2 t
! \, a3 O' L- r& _
set [trade-record-one-len] of self length [trade-record-one] of self
2 F  \* i5 |" B/ E! y1 P

7 B9 r# p3 b) H; _% C, P* lset trade-record-current( list (timer) (random money-upper-limit))
/ Q, E/ w2 x+ }( K. ?3 d
7 t' M+ }% [& \  r- r
ask self [do-trust]) P' w& L% l) ^$ ]
;;
先求ij的信任度3 ]! O( @, ^4 J4 L; g, V  z8 k7 K
8 Q) A5 I, g6 d/ f6 M& K
if ([trust-ok] of self)
3 y! `8 ]2 H+ A6 H! P, Y;;
根据ij的信任度来决定是否与j进行交易[
; j7 G" U0 a/ `. L  R! Gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 Z6 z9 V! }1 `' H) D0 h: n

8 x' U* @; R* x) K[

4 S2 d( r3 v# c: P) n0 X! I9 c0 x3 [3 x- @" w7 M5 y$ c
do-trade
9 L! _/ x' e- x& H
! j; G, Q3 d( o
update-credibility-ijl
! G! r" J' }! z8 @6 o# J

2 P( Q6 c6 R7 L, O- @# F; {" [. Z. ~update-credibility-list
$ j7 G  o! ], T# o& g1 V* P

( V" `* k" e& {( q4 i: c6 j, U) ^& C" L. p& n, E& W2 B! P
update-global-reputation-list

3 v8 T& g/ C9 _" ^, _/ ^) c! C9 e0 s5 C- |/ b
poll-class
2 B- Y/ T$ H0 D+ B  @
7 Z5 n6 n. h* A# B0 E1 y
get-color
1 R/ j  F& v- V- \& O

* P# K- |3 s# Q0 u/ R, P]]
( q+ ?# W) D' J
7 s- q* y8 s8 R* F2 b;;
如果所得的信任度满足条件,则进行交易) p- m+ U. Y2 n( |6 b& W
2 f7 l2 D/ S* e, a3 _8 P
[

1 |$ ?; b) ~! f3 t+ F& j+ b3 W0 U" S. B1 q
rt random 360

& ^; O7 G8 K) @" n
$ N, A* ^, e, |8 w; W+ @fd 1
) g4 f8 v! I* {* Z1 c) ?, G* e

7 x: v2 F: O4 z3 R]

) n: ^' E8 K" a
$ q) G, V* G1 @end

  o$ L3 Q: m) T) m# I( I# g
( ?& }- ~9 I% ]7 i3 T" Hto do-trust - _2 Y+ `# E* t, _& L
set trust-ok False1 g  |% W+ v$ n% c2 {

6 x1 ^8 n& r- r, }/ B: ]0 j; w1 x
0 f% O1 A4 n- Z  w# R. q! B0 Q
let max-trade-times 01 ?' y% w' v" @" V+ {# t
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 M- z2 y/ h) @, Rlet max-trade-money 03 I9 I/ j7 i( {6 c& ?
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 J# H2 \# d5 E( e/ _* K$ ^# s
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: V$ v3 P, Y* X- a4 n6 t2 N+ [+ o* f$ L" U) \% B, b
8 o$ r4 n8 ]- r8 D# S' D, O& X
get-global-proportion9 V  H5 s3 |! J& Z! Z3 [; S
let trust-value
$ C$ g- W& b& p# D$ }# Mlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
& L  d- q6 g; I/ d
if(trust-value > trade-trust-value)9 n/ w/ N- J2 ^) c* i$ g
[set trust-ok true]
, u. S+ v: K: E$ b! n* vend( c" A( t3 n% _2 O
: }5 A$ }- x/ l! `, Y7 A
to get-global-proportion1 j7 R) g2 Q8 }+ [3 e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* p/ c$ t' _( {. m+ ^
[set global-proportion 0]  z7 W  Z% r" L* T
[let i 09 H$ i: m# y: S, Z4 D# l0 {
let sum-money 0
* `6 a4 P! Q1 B' \while[ i < people]' `6 }  u6 y1 `- r" b
[& [6 N" U; T0 ]* L$ z5 \! N
if( length (item i
: R: _" C: X" K0 o) a[trade-record-all] of customer) > 3 )

  X4 G- N) b; w# w! W/ h7 c[
5 w1 t0 W9 K4 Z8 z+ D  pset sum-money (sum-money + item 2(item i [trade-record-all] of myself)): O7 B# S- T; J; C
]% \/ d9 _/ t4 U. V' U$ x3 W
]& K, I" ?* b8 B& x5 b, N; J
let j 03 F3 F( S5 {2 T% q0 H1 V
let note 0
" H' [  s% B$ b9 p+ Qwhile[ j < people]
$ V/ \$ Q% K1 w* j' k# u[
% p5 [3 Q( l! `# Wif( length (item i2 x8 X( K* S1 z! ]
[trade-record-all] of customer) > 3 )
3 Y) t% ^0 |* Q; \1 e8 m! O/ _% ]2 m
[
( f  z" s4 X2 ]7 D' Yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 h4 m1 b) L3 _( c; o- f. m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 ?" r5 T: q+ m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 F& ]0 k' C0 k( R  ^" H; o
]
5 V- m$ Z7 `% e5 O8 Y( e) t$ E1 z]
0 d4 U% A: }3 {$ ^" Y0 q' |set global-proportion note
3 d' K# U! {4 i; d( c" J]$ y" `( d. z- b) e6 z
end+ {7 n. O: e; H. P4 o
% X8 L9 {- G6 s# H' f" \
to do-trade5 S$ t4 k& n2 P' @
;;
这个过程实际上是给双方作出评价的过程2 z/ q( d: \; a/ Q: @/ ~- R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 J: m9 {3 z2 x$ M, e; w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" F# C; b5 E* Q3 C
set trade-record-current lput(timer) trade-record-current! x; s% u  _/ R5 C' h. s  x
;;
评价时间+ A; ]- ]7 a3 A. Q& Y% H" Z, ]" I
ask myself [& j' H( a( L4 b
update-local-reputation
8 M2 J, K0 b; T8 q* Eset trade-record-current lput([local-reputation] of myself) trade-record-current" s" v8 D6 G5 I" C# D1 s
]4 t" j0 }2 w6 {* o# i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  R7 ^  \1 [2 W0 B( g/ B4 E- u
;;
将此次交易的记录加入到trade-record-one
: m7 ^2 S5 ~/ T  l& `' iset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* y& R6 r2 e/ i: n: W2 Wlet note (item 2 trade-record-current )( d. F5 z2 c1 i8 o
set trade-record-current
  L- B# @, M5 R6 Q  v% y(replace-item 2 trade-record-current (item 3 trade-record-current))

; V5 P, t, ]  a9 x6 t; lset trade-record-current
  W& M; C3 n* r: r2 ?(replace-item 3 trade-record-current note)& h! h! v8 q. k: ^3 U

% _/ j; F7 S9 V! ~6 g, W  |# ?! b8 |

" A0 J/ m$ I7 P+ `) m! A% aask customer [" W( I1 n' ]( E1 b
update-local-reputation
. p4 |, L, F9 B: f/ C( h/ gset trade-record-current
; `: y/ ?9 p' Y2 D8 |3 d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: d+ H+ l, _1 `+ `8 B1 S3 |+ _+ D5 L]9 F0 g/ Y. ~  o1 p' v5 I: g

; A! s6 \0 n% w* S. h  _/ A: a
- n2 r' t/ H. X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# b* n1 _4 T- R7 k& C, M) Y

! k3 }) D3 s# G0 f/ M# b/ aset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! K4 F2 a4 `+ S1 y;;
将此次交易的记录加入到customertrade-record-all, w0 W: j. D3 Y! v/ k9 q
end
8 [( i. L# v1 G0 b" p3 [3 y  H/ m) r
to update-local-reputation
# N8 c4 I% M+ K& e* C2 k) |; }( Fset [trade-record-one-len] of myself length [trade-record-one] of myself
) x/ H4 w  z( O* {2 X
. q: w1 Q! i; [( U; K; N. \4 X* Y( Y
;;if [trade-record-one-len] of myself > 3

+ _+ J' A; e0 k1 ?update-neighbor-total
! |4 I. F( E+ L;;
更新邻居节点的数目,在此进行* R8 z, t6 z. v- t1 T
let i 3/ G: ^$ O1 d5 m+ {
let sum-time 0
8 X( l$ s8 [, g: Z; A! ]% Hwhile[i < [trade-record-one-len] of myself]7 o4 m# o4 \+ L9 m  ]
[+ X) Y/ q& I' Z. U8 \9 n
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); k) E/ F7 ?  D. q, i$ r3 `
set i% _. x- }3 Y7 Y& l6 @: M* Z' p
( i + 1)

% D. {- N; |0 I( ?+ @]/ r  v2 X$ L$ ~' k7 g! ]
let j 3
# Z9 t+ h# {5 B4 k4 hlet sum-money 07 ^: L1 Y# t" I, s2 j. ~
while[j < [trade-record-one-len] of myself]0 R7 r! A; \' M* t* F
[
' T0 C$ M; L! |% g7 }$ F5 A' z2 Uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 X! B2 E* J# d
set j% x6 f" u$ c: J. D! z- O
( j + 1)
5 j# c9 O4 K7 X- h$ O% U
]
3 I1 b9 U8 R$ K0 a0 N/ Q) wlet k 3
: O+ A  [2 l/ P7 i) Z3 Ulet power 03 P$ a# F- S, ]6 `4 f! m9 r
let local 0
! r( t6 z$ f4 r/ R  u! fwhile [k <[trade-record-one-len] of myself]
7 t7 P/ ?# Z! B2 m) m: y/ A[
" H8 Q' X& ~1 iset 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) 7 c* e* K3 q4 T+ `
set k (k + 1)  Q% f% _& T& D- k$ N
]; v2 n% G- p' }8 w" E( j
set [local-reputation] of myself (local)
* h' [% v+ G  y) O- K2 W; ~) yend
( t2 ]& ]6 x) Q9 y! k% w
$ w. W! U+ X) G, w1 ], q- y; Rto update-neighbor-total
' S  R% a" _0 y( C, V: B
+ A* X1 f7 J1 }! e" y8 a3 kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% P7 d- @1 K* Z  ?& e

/ n6 }4 \1 y  n  R1 g$ E: M
  `; t; W: x' M* f( i
end6 z9 s) F; s. B
. v# X: h. F1 E/ [1 \, @, w
to update-credibility-ijl
4 e# l2 \& U' j5 b+ H
" V$ o5 O8 e6 I4 S. b( F3 ?: H;;
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。
% K0 A( h7 E& k; e3 p4 ]" `5 n& Flet l 0/ |/ S+ o% g7 s1 D& q* @; `
while[ l < people ]
1 Q3 Q( _! i* E! X;;
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 G- T" ~$ @* z: R
[
5 {# [7 u3 U$ T/ M4 {let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ f4 J7 |: [8 g4 P0 r( B6 n9 yif (trade-record-one-j-l-len > 3)
3 P5 Y1 F7 Y6 |  P) {[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-one5 x8 n# }4 f4 A
let i 3
* C0 u" m+ A, D2 Nlet sum-time 0
. G( i" {, I; i3 a& {% swhile[i < trade-record-one-len]6 P6 R5 B9 |9 e; Z7 Z
[
! ^: q4 |" Q4 Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 H8 T# v- P; K5 g5 z7 e& i3 Jset i
7 n( T# Y, C+ P! y5 z( i + 1)

8 @: [. i& U" R]
  t3 n9 e/ |$ [( slet credibility-i-j-l 0
: ^8 V* {) I6 n/ `;;i
评价(jjl的评价)
7 t! S% p6 v0 t. Blet j 3
7 v7 T4 V' r0 C5 Alet k 4
2 A- t' [- P2 x' ~while[j < trade-record-one-len]
3 V" I. U: q: P9 j7 c5 _' e5 j[$ J) u( L8 `, y& m- a2 H. I& C
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, p- I2 }9 ~+ T( B; X
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)
+ \' m/ Z, \* @$ ^1 i9 @* Gset j
- M8 d$ c+ ^2 u# c* Z4 X( M0 n( j + 1)
4 _2 c: `6 g  E0 p
]2 ^3 S3 e, z1 D* I' ~5 x7 t* b8 a
set [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 ))
9 W! {# I1 Y. s6 g8 B  q  h9 ]2 O# y) L5 V. m
1 s5 Y6 J  Z. K% @( c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* s9 M  u+ T0 s2 r/ [8 D2 p;;
及时更新il的评价质量的评价# |6 F" K# r% A% l! j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' h8 i4 M, k1 U# Y- @set l (l + 1)
# l# w6 J# I* \) O]! _. g+ i! v* B3 t
end7 S$ g" u9 d, P. j: k! p6 q

8 `% o/ L7 ]# Q) A$ C7 H8 Q8 D. wto update-credibility-list
9 h# g/ N$ b/ j$ C5 {let i 04 s* ]1 I; D# q5 e4 \: W0 {; t) o
while[i < people]
# v9 G: Y' S/ V3 |[
! O! w) O  M% ?: Slet j 0
% p4 X: l- T2 G9 Tlet note 0
* k. k' y7 F0 alet k 0# W. {; X) S3 K9 P& q
;;
计作出过评价的邻居节点的数目: L7 Z4 Y- T3 K/ O6 M
while[j < people]- q& f# R, ^! }9 ]# H* h$ Q
[
  K, K7 F/ O6 R/ T5 k( F+ Aif (item j( [credibility] of turtle (i + 1)) != -1)* e. Q7 A- _! h- q6 ]) v$ w4 b
;;
判断是否给本turtle的评价质量做出过评价的节点
% {- b& T" g; i/ P- G6 W4 I[set note (note + item j ([credibility]of turtle (i + 1)))! B* c& i% |, c1 ]
;;*(exp (-(people - 2)))/(people - 2))]
) ~) Q3 r1 l# T$ c# Y1 C8 k
set k (k + 1)
+ L( |1 p! P  u0 x9 r]
! V$ u* T  u( s, x1 B+ M$ u3 xset j (j + 1)& x! \3 r2 |/ j! I$ E3 I: _! p$ T
]) g, {" p: `* T: _0 ^
set note (note *(exp (- (1 / k)))/ k)0 e6 N; u+ H. L& ?% i/ g( O8 U/ k
set credibility-list (replace-item i credibility-list note)
( B. x2 `$ V; X2 O/ w; J9 p7 p2 wset i (i + 1)
3 {& |( u1 J! b]5 ], L1 U1 F  ?6 R( S
end/ }) ^7 F6 P& ]- M( q* T
) U7 k4 a0 ?3 L1 ^
to update-global-reputation-list
# o, `1 m5 l- J+ Z# O+ z+ ?let j 0' W9 x5 w# k( y3 w. I* t" |
while[j < people]
! ?# g  \8 U% ^[& T# s5 @% Y: D
let new 03 j8 f( N! R1 [: |# @5 J
;;
暂存新的一个全局声誉
, B$ z9 T3 B% }& v/ qlet i 04 N3 ~" I& }8 h4 F% N* @; S
let sum-money 0
* X1 J0 f, Y4 N5 ~) `( Ilet credibility-money 03 G* Q4 o  ?$ A/ |7 V
while [i < people]" Z* [0 t4 Q5 O( Q7 L
[1 c9 A. E8 B$ [: t7 _3 N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% Q* Q: _" Y$ C9 m. t
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 Y$ j, @5 m, xset i (i + 1)
( h+ v8 Y* T4 {4 x9 X+ A8 @- o]+ P: F" u4 L1 L$ Y" R1 M9 [# [
let k 0
% i& A2 Y$ m9 N* _& b. Mlet new1 0
& d9 \- X8 W6 L' ~( e: B$ Nwhile [k < people]# K4 B1 _% D3 f, h! {6 [
[+ m- x# B& D( |/ \
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)
: [, r4 Q, F. V+ ~set k (k + 1)
- M* T; D7 W4 a# m) d]
: I. }  Q! x8 B. o5 {5 r$ ~& Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& E! }" t9 [. Y7 w( yset global-reputation-list (replace-item j global-reputation-list new)9 ^: Z8 R& k* R9 g+ L3 ?* D% E# `
set j (j + 1)
9 p& f& L$ x* u" x: [! M+ J4 @$ E6 {]
1 t( H- {4 n3 @: j& X- Iend1 y9 Z. O/ _( `" V  o4 w

3 _. ^/ c$ P& t4 S) \! Q6 j6 h( O/ M$ u0 \2 R, e

: \2 P4 ?( k7 O7 i1 x' dto get-color( l( }: j" g, ?+ V6 y& L
- ~- o4 s5 F/ H! S
set color blue

8 L2 @' B4 x2 Z9 Tend+ j9 x* M$ d5 G& i; k$ K
6 u2 U" m3 |; p( E3 \
to poll-class
. k3 @1 y% a# C" n  mend
. z8 f5 K8 h% k7 P* |6 j0 X" _# T) n6 E. i9 m* Z# P: g
to setup-plot1% r6 `3 w9 }2 a' I% {

/ q4 L- ?1 W/ R& ~( N1 S( `set-current-plot "Trends-of-Local-reputation"

0 j2 y) a9 M2 G7 h- [, U- ]( h3 s. N) y2 g2 r; \/ T
set-plot-x-range 0 xmax
1 m# Y/ O: @; X: q8 N4 i. z
' \2 m$ B  ]: X8 Y$ J- v- K
set-plot-y-range 0.0 ymax
3 I: K* V, Y! o7 ~( N& a+ u/ O
end
6 @1 Q# a7 y: s/ O' }- y5 |
" C2 O% u8 d: h! Z& z' f* n3 _( l% Q9 ^to setup-plot2# x9 D- ]/ u& \# A" J  R
  {* w6 s* n4 {. [
set-current-plot "Trends-of-global-reputation"

" B! ~) w" s9 j$ {. i- _; i3 ?( U# O  H- Q4 m2 ^3 ]) U5 e
set-plot-x-range 0 xmax

* v- Y) D, A7 m7 e" ^7 b3 V% i9 m& B" p/ `
set-plot-y-range 0.0 ymax

* P+ Z+ k% c0 E: j% U9 G& Q, kend
7 k  r9 L6 K, m) D! W; g. ^$ i9 p, \3 @! E, v
to setup-plot3
' k) \% I- N$ f7 `; O1 w% ]0 e! ^& L4 `$ v
set-current-plot "Trends-of-credibility"
& @5 H/ F, U; z
' q1 D5 Y! v3 T, C4 h6 o3 c8 \
set-plot-x-range 0 xmax
9 I/ C$ `1 q! Y7 t

. E1 i* E8 X2 ~5 W: ]8 ~# dset-plot-y-range 0.0 ymax
; _) u* ?- w* b- N/ i. e6 G  Z' l
end, _" x1 f% X1 Z- @  M
: z  c0 T8 N) ~. u  h! ?
to do-plots' i# w, y, |( v
set-current-plot "Trends-of-Local-reputation"7 v) K& N6 ?) Z! S- t# b
set-current-plot-pen "Honest service"3 a8 a4 y" B+ {3 K/ l0 f
end
/ O1 B! E9 a: E1 R5 j2 e, K5 L( B: t7 m$ Q: B
[ 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.7 X2 q: t4 @6 ^) v1 L9 ?

) q8 }% p0 ^: l! ]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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