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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:7 n6 r( t# p& e! _0 m* i. O
to do-business ' \# l7 g5 t: w+ X: [4 g, T: j
rt random 360/ S; o: u) ]& G% M: a4 g- \; ?4 j
fd 18 i$ L' ~) C0 ~3 U
ifelse(other turtles-here != nobody)[
( Z2 `6 C* _' P2 w8 J   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.
9 c0 B' a/ y0 F6 M- ~) n. W. U6 K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 M7 C+ U5 J9 B6 g* [  P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 v- ?( J% E0 m7 z$ a) q   set [trade-record-one-len] of self length [trade-record-one] of self
8 M" l7 c) u% M) V  f   set trade-record-current( list (timer) (random money-upper-limit))
. v" K: M" v/ V* g' [9 y) I7 i! v+ |: }2 F
问题的提示如下:
% W5 I, V; D* C* z. U+ S7 ]8 c4 a- H8 b! u4 v
error while turtle 50 running OF in procedure DO-BUSINESS
1 [8 i1 X0 |- K0 g# W  called by procedure GO, B% z* r& s0 ~( R/ `
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) r& e, {% ]/ n, D
(halted running of go)
4 W5 |" N8 x' F6 e* H6 g, o% C* D# c# C0 Z6 P# m0 O
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~~
) x9 M/ F  O  y4 h/ P7 e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  ~8 H9 s# t0 g1 h0 u6 x
globals[
5 T: e! b# L8 P# w# E% bxmax
$ j1 J3 j; c" ]2 ]0 Qymax. e; e. A* |  K2 n/ n9 n
global-reputation-list, R6 r0 a+ A* g, V( o7 O$ g
  y) d& r% ^( |, W
;;
每一个turtle的全局声誉都存在此LIST7 l4 H$ K  {( d& K( O$ X3 D# k  J
credibility-list# r! B6 J0 c0 o$ q
;;
每一个turtle的评价可信度+ v8 i5 ?& S6 ~0 D! \6 q
honest-service# Z, b; L+ U' S! x, x6 ~* Z
unhonest-service; k# M! K! f; P8 U
oscillation+ x# E( \% W& U3 p2 |
rand-dynamic5 z6 J" l' V! S3 Q4 ]# D, @+ P+ |
]
4 K" j- |" Q  k2 R) H. P( V/ o; C& |9 ~- h% K6 U- X+ c
turtles-own[
2 u9 k# }6 v( [7 l# @  q' jtrade-record-all
4 J: ?8 {+ i& h4 L' L& f& \8 T;;a list of lists,
trade-record-one组成
5 D& T2 W6 r. I# M7 y9 ~trade-record-one% ^2 G  Q# o. [1 g" Q, J% q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) f, C: M9 }; \5 Y3 I6 ~6 E% J$ q( z% i5 v1 T1 p/ V+ q
;;[
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]]
. J: ~$ C! ~) M1 itrade-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]
( z; p) F3 I' c& D! _) Acredibility-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
. W1 d; H" w6 \9 H: M% G( s3 ]' k) Tneighbor-total
; \, q7 v" W$ V& R1 ]) v7 |- P- r;;
记录该turtle的邻居节点的数目
7 _6 R. z6 r& R$ J) Ktrade-time
. r" {. u/ x7 n! b/ \3 ~;;
当前发生交易的turtle的交易时间" N0 Y7 d/ ?: j) N0 y6 y3 ]
appraise-give
* q2 W) g0 s2 [$ N' J' y# J;;
当前发生交易时给出的评价
- I: _9 ^. x0 U+ k$ x5 Dappraise-receive* ]" }4 ^/ a; U0 a! v0 P
;;
当前发生交易时收到的评价$ I2 j" n* \2 f) w
appraise-time
2 Z: ~) r' e: |: A9 {" @: g;;
当前发生交易时的评价时间
: Y  V6 l- z+ A) G2 U4 {9 H+ Slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉) H9 g1 Q3 ~! ^0 E3 l
trade-times-total
. x6 l. L0 N" m! |4 T1 r; E; Y;;
与当前turtle的交易总次数" `% i$ A: ~' g: p
trade-money-total
6 d% V, M9 k, U+ Y7 B8 f;;
与当前turtle的交易总金额
; Z& _$ P. A. a+ Flocal-reputation# i( q4 |% F9 Q  o6 I/ w/ ]
global-reputation
3 F2 w5 f  |4 c* r% Ccredibility
, p" z7 a  ~7 f;;
评价可信度,每次交易后都需要更新
9 R8 j3 z8 k4 G, X( gcredibility-all' p2 [; r' V' N
;;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# h/ F/ @; R, _! d  ~4 b+ r  {

& Q6 y' ~; {$ u8 L$ 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0.54 Q0 `( C2 b% v' e, M- _- j. u
credibility-one
0 {; n* S. }* r' _) N;;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
  @$ I) J! T  i; x: n, Bglobal-proportion
( h8 C2 ?0 K2 D0 [/ e1 Fcustomer* V0 N; ]3 Q4 l$ j# @
customer-no8 s8 y: j1 \: e+ [, Y: d
trust-ok
4 M* E5 W8 X6 K& Atrade-record-one-len;;trade-record-one的长度8 H" w' ~& S( Q( G) s
]& }0 C& ~* g: s2 ~

* P, [3 ^+ X- |2 b; E1 @;;setup procedure
( r- a7 q, k; Z, F" f! O  I$ R7 h9 y; D+ c7 X& ]
to setup1 g6 L- C4 @( B! ^, s
1 s  l( ~# z& p1 q9 F
ca

4 y. a) ^/ x& I3 O1 n' k( H& @0 I
& l# ~$ B- s( A3 C/ e; ~) v) Kinitialize-settings

( h( ]/ H( j7 w+ ^
2 G; k+ i, |2 g" Z7 `: s" f7 T. dcrt people [setup-turtles]

. X1 {$ i4 s8 Q1 }  C
& Z8 p# j1 S  G, S8 J% Dreset-timer

9 Y) n1 G5 H# l- U9 c
4 {6 X8 S! F5 j, W8 {poll-class

  M1 M( n2 |, \! i
+ X2 @9 Z: X$ R7 Vsetup-plots
4 I- i! ~) O' x* f  f: [% B

* d! A: s- B. o1 r2 ?" hdo-plots
- M( y' L0 N) Q0 p* u. ?7 e
end
8 \/ a( A1 {+ G  i
: o  _- g  Z7 ?- I  mto initialize-settings
# l* W2 z2 O9 Q4 y/ b8 t- C8 w
set global-reputation-list []

- N9 x' z  P; I: E- P3 I2 @9 K, k) H. i9 g* ~# Q$ |3 N
set credibility-list n-values people [0.5]
: {+ c1 {6 H( Z1 M

; Q$ X# ?- m. Y6 S; Xset honest-service 0

' w; [1 ^/ r. D  Y$ T$ T
# G. i. }) l  U3 ~; H! R7 e8 Bset unhonest-service 0

- b7 d5 v! {3 N: x$ h$ A
( W% i6 h% J: o) j! v7 aset oscillation 0
' t2 y1 c4 e' U" @* D7 q; g
; E* N# \" h8 ~( U! f7 `
set rand-dynamic 0

( E& {% R# _, s" v. K* t/ v: L( nend6 P3 ?% Z( u( L9 Y5 G9 J6 \
7 o1 W4 f1 b+ z
to setup-turtles , p6 e' N9 F: X/ M, E0 i6 Q
set shape "person"1 W& Z  j; }: R: i8 s
setxy random-xcor random-ycor
4 m8 T+ i3 Y) N/ Y6 {. {set trade-record-one []
- B9 C% F9 M1 b) G! y

; |! W7 F! @+ V  g! eset trade-record-all n-values people [(list (? + 1) 0 0)]
9 z$ h# p: C1 m3 J; ~

4 A) d; E# \$ v) v2 p- a+ e8 \set trade-record-current []+ u7 |7 n" M4 a) |5 D
set credibility-receive []& b' g; n+ c. s+ I/ f4 H
set local-reputation 0.5- O8 Y! I# v1 t& p
set neighbor-total 0
9 o/ G  a; k  V. y/ D" ]4 wset trade-times-total 08 B0 [4 Y' }# v
set trade-money-total 0
) z$ o6 j4 K. _, _* Fset customer nobody
1 K% s  h1 d/ j% Zset credibility-all n-values people [creat-credibility]
( f" z* Z0 j* G1 P: z' @set credibility n-values people [-1]
" W7 T( ]2 F  N: }6 ?/ w( Fget-color0 Y" c. M. `; M& |- b
% w! {! o! Y. F, p# a) p! P1 w7 e
end" t; ^% W6 ^; Y, Z

4 M) U# p6 \7 c9 u- Q  eto-report creat-credibility7 s# J0 ?) A8 G6 H
report n-values people [0.5]
$ V3 U* `, `. j& G3 wend2 f# \& w5 F, L) M% a3 `

& @5 F+ j3 b  i2 W) f6 v3 ~8 E; X3 Zto setup-plots
8 Z' {+ g3 R2 P! {1 ^2 L3 x/ z
: ^4 Y, w7 A8 S+ F& Y  @set xmax 30

- B) M) l+ R+ r  D  q
+ V1 X: ~, L& t( w9 `# {set ymax 1.0
/ x0 _7 O, R2 ]8 I) T8 ]

9 A* O2 h% t) I! Z# r" xclear-all-plots
  A+ w6 r$ g9 H8 N) C* U& x
* M6 a5 V: ?: T) I6 v
setup-plot1

9 ~$ ^! |3 x* }3 v; p* _
2 r" r' i3 m& D4 j7 Esetup-plot2

) \9 |3 u9 e. x9 E0 ~4 T' N* M8 x+ H( J/ c) H. k4 V3 K4 y
setup-plot3

0 U! e  z) D; Q0 [, Fend
. ~! w8 K0 a$ G; a2 e& j7 e8 N6 D  C
;;run time procedures7 e$ P. j& B0 w% \

2 G0 V: e/ b, l" H" y) d4 fto go
4 p, y* d  L  V- i$ \
; j8 b  `$ a; ^5 sask turtles [do-business]

4 n3 w/ G% |, m. O: z) `" yend
% h; ]1 F9 y8 k; Y5 V
0 D4 W4 o3 w) A/ Z  d/ }- y  Mto do-business - t# T$ }& E7 f- v, u

# W( i1 B: I2 j. j& Y
( Q! q* m, c$ x; c7 \5 xrt random 360

* e3 b  X9 `+ N  ^' A3 n5 h6 |" s( G1 v
fd 1

+ n- F$ ]; _9 n( j! z" R3 j+ [  J6 m  U' t/ M6 n8 ?' ~
ifelse(other turtles-here != nobody)[

+ Q  Z, [3 a! ~5 b' }  x, g; U! ~% E/ V' m! C- O1 e
set customer one-of other turtles-here
1 ~- i) ]( o3 c

+ \9 q5 L& J  y) z) ^;; set [customer] of customer myself
% n, j: P) W" g5 k9 b' Y
" i7 R5 r- `1 `/ U' X
set [trade-record-one] of self item (([who] of customer) - 1)' Q& E+ \! e  `0 F& F0 G" W
[trade-record-all]of self
& u! e& r4 x, o+ F; f; @1 s;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- q# H1 p4 \% q3 y/ o0 r
+ G9 X  e) d& G( X6 D. s$ B" U0 iset [trade-record-one] of customer item (([who] of self) - 1)
, B  O, W5 n2 V- J2 {/ C# A( Y[trade-record-all]of customer

. B' G9 G7 `- S* j8 F0 L9 u/ u, b
set [trade-record-one-len] of self length [trade-record-one] of self
) U! a- ?6 ?2 h1 J7 k* g

9 v* P- r: }: D8 a6 oset trade-record-current( list (timer) (random money-upper-limit))

) p- {- w/ s0 K! b. C# u2 k
! }) N) p9 H% j# l1 O* }/ s. Fask self [do-trust]+ i0 o/ r- g' b& Z' Z
;;
先求ij的信任度
3 R4 Y" c9 V( q+ S7 S1 {& Q5 U0 T- \7 _0 j
if ([trust-ok] of self)+ L% r) r' |) {1 m4 f  ]2 D/ |
;;
根据ij的信任度来决定是否与j进行交易[
' v! M8 D4 _3 ~1 h- Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: g6 |- T+ W% X% S
  G8 t( o6 \1 u$ Q  v6 k; X
[

$ T0 }6 m+ @2 R" A4 `9 U
% o, }# I7 g, F$ X$ Mdo-trade
8 K- M0 @8 E1 D% l: v: _

, Z% t: |/ z: Cupdate-credibility-ijl
5 N# H; B5 m2 t. q- k4 E$ K
& j* {0 `1 y, _
update-credibility-list/ |" o) [3 ]6 j) v# e3 u

0 x/ L2 a4 N9 e
, M' F, z! {* vupdate-global-reputation-list
# F# x% L* M: c8 M
& a3 [, Z, s! v, c9 v
poll-class
& C+ Z" f- [1 o4 X$ G

; v  c! F  a; q2 L) w2 R6 {; }get-color

" e( c- ]- k9 G& O) l$ P
( h4 N3 L, H0 j" r]]+ ^5 }( B2 H. W
6 v! i7 r: g: W$ O' F
;;
如果所得的信任度满足条件,则进行交易7 V% k$ u( T, d9 R3 H

& g; ~+ [$ d) c" H. x/ T7 [[

$ w+ G3 ^* j+ T8 i( G5 L% c6 h! z& Q0 H; r
rt random 360
0 E: T% s* e% u6 D
9 L, \# R9 e/ E. a( W. M
fd 1
& M& i- x* g0 u& _% v

& X, I/ i. c( X/ {" O1 Z]
! L" J8 |! C5 {2 {) ]- J1 g
$ \) v: K. p- |
end
0 z3 Q2 A1 u: {/ O6 i7 J  B

: o3 V: M# w/ Kto do-trust
6 z, q- z7 X% b; M9 Oset trust-ok False, J- i1 l+ y& A1 d  V

- X1 \, m- Z6 H6 L( b1 `7 X7 i

5 c$ U, u+ x2 k8 Elet max-trade-times 06 }9 @+ Q  c$ I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ e) [/ x/ G/ h* olet max-trade-money 08 @$ ]9 [! U6 r' J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, C' O( ~! S# t& m0 r+ Plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" V' x7 r$ J# G1 e- K4 J9 S1 O& A. E4 I

( M2 X+ ]5 a9 J0 l; K; N" a( E6 j! nget-global-proportion2 T) e2 E' u7 B% d$ |& A
let trust-value5 r/ S% C3 S. o6 j) l
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)

$ f$ R0 f4 Q& U( Y9 e+ A7 Xif(trust-value > trade-trust-value)
1 U2 V- U: W$ _9 W- R[set trust-ok true]3 }6 @0 o7 Y$ N0 a1 U+ d. T; p
end
2 X$ Y6 Q  Z  f" [! M" V0 J5 @6 A  F* g: R8 O9 c( w
to get-global-proportion. e: V, Y* |* y" v
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( ?2 ^. i5 K; x4 p[set global-proportion 0]. T4 [5 ?$ W4 }* _
[let i 0
/ j  `# }4 |# x8 x/ glet sum-money 0
0 W# A9 {2 i: zwhile[ i < people]4 K# c  G4 s! E  F4 A1 i/ ]
[; J$ ?* K8 W: ~9 K
if( length (item i
. ]+ Q: G' W6 s5 J1 C/ i3 r[trade-record-all] of customer) > 3 )
  a4 H9 o4 m$ J. a& i. u- M" s1 d
[9 _4 Z8 Q$ V/ q# V0 H. v* h' ]0 f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 g+ Z* q1 J% K0 z! I' A]
+ g5 h* l* ]  W2 S. F% y; t]
+ q! G) G1 k0 i! f2 m+ C/ A$ X! `let j 0/ w, N% U5 o) i, s4 B; R: Z
let note 0
0 Y/ Q: Y# z- k3 v& L# ?2 Twhile[ j < people]0 k. r2 b4 x) Q9 l7 n6 [. L5 m
[8 g* L+ i. U5 l, n- Z0 _7 `4 G2 \: S
if( length (item i/ ~. m( h$ p4 H. @
[trade-record-all] of customer) > 3 )

: Y3 `; m% k( J- V0 j[: G4 h7 N' o2 q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 E" x4 r$ v8 W. v' r
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 ^, {4 i  N0 z" U[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& Q; `& s- s5 Z# k7 ?
]
7 L' }$ a5 o  U3 ~' N& f]
6 g! k% U) D% ]( m( \% }0 U: Yset global-proportion note
# r, }/ W# D  ~4 @]& e: P5 |; u" U# k! X
end
/ u8 u& E. q+ X; b7 P5 j1 T- ?9 n9 H) F% b/ ?0 I
to do-trade+ }* C& w  ^+ d5 R* t* `
;;
这个过程实际上是给双方作出评价的过程
6 ]. p2 V' ~: ?" G9 o. [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 s: M% y3 L+ dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 |/ \- q; _1 W
set trade-record-current lput(timer) trade-record-current
1 Z9 y8 x8 S9 _7 ?% W;;
评价时间1 J7 V2 x6 O; C
ask myself [
) }1 ~, M7 Q# ?5 e8 U; Rupdate-local-reputation+ M2 `3 A& @+ q. X! m( T% f
set trade-record-current lput([local-reputation] of myself) trade-record-current0 I* ]/ {& m* e
]
/ S- |* {( r8 M  K5 u6 C, \set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  N5 D+ L" j9 [* D;;
将此次交易的记录加入到trade-record-one$ m# u+ {& ~+ r  L# t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 R0 K* h, G/ ?let note (item 2 trade-record-current )
9 I3 S& g3 }  c/ d2 D7 Kset trade-record-current
" I2 E; |( R" H5 S2 y" e/ f(replace-item 2 trade-record-current (item 3 trade-record-current))

. k' D1 g6 ^* s2 w, E/ l# P* `set trade-record-current
  J2 Q) g8 c5 i# O0 [(replace-item 3 trade-record-current note)/ @7 [# k1 w, l" O
, x# Z9 C) U- T8 j
' ^9 j. I) q4 h4 T
ask customer [. d6 n& B1 j9 z* O2 B8 Q: j, Z: {
update-local-reputation
2 C& J3 ?. O4 ]8 t, q/ Rset trade-record-current
5 J# S0 x0 H% d6 t4 r  p(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* l# J- I% x5 S+ o0 A( O$ s
]/ U( W& T1 j6 g+ j9 j/ v) ?+ c
" Y( |2 d$ C. ]5 }! |# J
( d; g0 S1 J' s  q% u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( @( D9 b6 q: d1 M8 ^7 c2 h- @" K
. h' k9 w* z; a. q; ?% Y2 t# }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: q8 ~9 N; k4 A! f;;
将此次交易的记录加入到customertrade-record-all
. s: x$ k0 A) B, send
( j2 a% }& y) _- Z; P0 A( X5 |" Z5 {# e& w+ }& u
to update-local-reputation
; n; v5 C: a. e- [# cset [trade-record-one-len] of myself length [trade-record-one] of myself$ g* t, z+ _- U' h: m: S/ A

' c. O9 B; \( D& j7 C3 T! D3 z* x* V; G# T& \. c% x" Y1 u* z
;;if [trade-record-one-len] of myself > 3
2 A% p" ?& q) d: O  }/ @& J4 W
update-neighbor-total
2 C( A  M# u5 W$ S" z6 r  m9 A( G;;
更新邻居节点的数目,在此进行4 w1 [+ p. z9 l
let i 3
  ]/ X& X) G: @) Jlet sum-time 0) i4 e7 B* |! Z0 B$ v8 q1 p
while[i < [trade-record-one-len] of myself]
8 y5 {( h, ^7 I, i[3 ~- m/ y, O0 l
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" I9 b& Y2 P" b' o- B/ [+ n- \7 vset i
0 m8 U' k2 g  M7 {8 Y0 }. C( i + 1)

' a% S0 e4 |7 J0 o- j]
$ p" g- L% X( T  h% ]( J' [$ Slet j 3
( f/ V  |. f1 Clet sum-money 0
# _& `, c' e) j; ?; }while[j < [trade-record-one-len] of myself]  w, }8 G8 _' }7 R3 y# K7 s6 s
[1 L" v. s# Y. \3 s
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)! K1 `. d- P' ?7 ~! l# P! ~; {* ]
set j* E3 D$ e8 @5 H
( j + 1)

% V5 S9 Z3 g- _: n* C1 c/ l& K; s' Q/ g]
; `& x) M* D, A0 Nlet k 35 h* Z$ {8 R5 x" Q; Z) S
let power 03 K# g" J: f, c, A" Z7 `
let local 0
9 p0 J  J0 y( l! T$ o% Z# }8 }4 Ewhile [k <[trade-record-one-len] of myself]
8 Q7 W' t8 J2 `. Q" M[
9 n+ e4 E5 g7 G, O! f  J* @  Gset 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)
: u  _  M8 O  bset k (k + 1)6 s/ y! l- \6 |' F1 D: ^0 A4 j& b
]
+ Q% J8 W( `6 N3 Hset [local-reputation] of myself (local)! X1 Y" A5 a3 ?
end4 r& J. d) c' ]3 u

0 Q& G/ p+ D5 o+ k% }3 r& wto update-neighbor-total+ L# T9 g; K* m8 H2 U7 l; L+ Y% _" x
1 P3 a! R. P1 K& v! |! }( U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) X. y0 Q7 h1 ]" j
; n+ F' Q  q0 Q6 Y; V
" R5 j$ D6 F+ l7 N6 s0 d& e- l4 H5 ?
end
/ `# d2 z4 ], a; n" _- D9 }/ @2 O: ^% n0 T' B
to update-credibility-ijl - l! t* _; H0 b
' J( y, ]. S* d2 u/ }
;;
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。9 m; i$ U( [) S& ^/ D! w
let l 0
6 s6 N) J- d& ]$ N  u0 ywhile[ l < people ]6 m0 N, ?- ^% |
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价3 K$ N! f2 B2 \+ `* ^
[, c$ A  V' C! `+ L3 b% A, }2 P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 v1 n2 y9 J8 W9 ^' Sif (trade-record-one-j-l-len > 3)& B9 @  N8 h  a7 n  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
% s% ?- g/ G1 L& O5 E0 f  Wlet i 3+ F8 a; D4 @# }
let sum-time 0' s# x' t0 `4 W
while[i < trade-record-one-len]
0 ^* D; a% h! {% S[
/ c# n- q7 x* H! N5 m6 pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 P$ ~+ |' m! f
set i
" l; `) H* Y( {- Q0 ^) v( i + 1)

. q, [4 O. c! o' i" f$ H]
& U4 p( l9 C0 y8 rlet credibility-i-j-l 0
: k7 K) I; T6 q+ R( F$ Q4 Y;;i
评价(jjl的评价)2 _& e1 H8 {+ n2 q7 H/ P0 E1 S
let j 3
0 A5 e  F$ A  \7 J0 flet k 4
/ r5 x. R/ E  R7 }: w- f5 H  xwhile[j < trade-record-one-len]0 V' S, f6 u4 w* ]& k
[6 P3 M8 V1 _; S4 g
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/ s/ d: @0 x# k, X! M) v; f6 D
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)1 u: d9 s* R% S# Z5 |7 R
set j
, N# c% G  ^; u2 G* h! N( j + 1)

: ~" o/ f2 l/ l( B]
6 ^7 B/ R  z( P3 ?+ Jset [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 ))
" @1 @# j! }! b4 O
. x4 U  V9 B4 P5 E4 G3 t( B* i, y9 l# `2 i
% f' {# [0 B! O$ p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ N  k2 l# {6 E! l, U" t. `5 };;
及时更新il的评价质量的评价
" J( @" M2 {% U5 c5 Aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 ^# z: l4 P3 S1 e
set l (l + 1)
% H* _8 g7 e9 u! h/ F]
( ^; D2 |' w- B; n, K: J+ fend, x" Z/ _/ E% m% L

" H+ P, }9 ]: P" O3 Ato update-credibility-list+ w) t8 F& m# y9 s' r- x" l
let i 03 V3 l! M/ A' C& l1 o6 L. l( n
while[i < people]1 S' ?  G) b: j; A6 r" x7 F' v# o
[, I5 q: o7 D* N8 w1 a4 j
let j 06 Q6 i" `, u0 v2 z/ J# z( Y
let note 02 X9 d. l- ~, _! j# I9 {
let k 0) \5 t' W* _  U8 ]' q" R# C& R
;;
计作出过评价的邻居节点的数目
5 ~! h4 j* p* y9 n+ V4 j( kwhile[j < people]
2 s0 X+ M" L% k* w' G[' V/ C: o/ D3 n
if (item j( [credibility] of turtle (i + 1)) != -1)
5 U! |- Z/ J6 p* s5 F;;
判断是否给本turtle的评价质量做出过评价的节点( a% G, [0 w/ B+ q- B" `
[set note (note + item j ([credibility]of turtle (i + 1)))8 Z( ^8 f* l& ]% r0 b
;;*(exp (-(people - 2)))/(people - 2))]

6 u2 a6 i" `* K2 v1 h) D4 [, `set k (k + 1)) K# B& C7 R' P& m0 F
]' \/ `" g9 ^3 X4 ]$ D
set j (j + 1)2 ^+ L( q5 l0 q, v7 X; y$ y
]
4 v1 V2 p9 J  c- Aset note (note *(exp (- (1 / k)))/ k)
2 f- t( @: |3 Z6 y. D: mset credibility-list (replace-item i credibility-list note)" o4 D: k* g* S- W
set i (i + 1)
% \8 t: h3 n4 U. O+ x. g]+ c" b7 G, i- C' t8 b
end1 I9 J5 N8 Y2 T' B# b) c1 x
3 H+ N- [4 M- F# h
to update-global-reputation-list1 n6 _; w& J. o3 i
let j 04 L5 p8 R! C2 Y2 H5 q
while[j < people]
# Y8 p! E* |' V+ t6 z; D) k[4 E5 J6 A1 o8 z( G! [0 }, \9 s9 l
let new 0' X# X+ b) W2 N
;;
暂存新的一个全局声誉
* s1 s, I6 W# _5 i( K7 v0 y& Z6 r+ ~let i 0
3 Q4 ]' t" ]* w5 N1 plet sum-money 0
8 T' b9 Z( d: z$ r# N" C5 @0 W- |let credibility-money 0
6 u, f5 E) q+ |- v; Kwhile [i < people]
. I* B: x" f6 v; M[* B/ n! ~- K: k  B: d3 N( \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: `/ i) J' @( X! O8 c& h, bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% ^9 N( N# F- V* X4 ~
set i (i + 1), t" ]0 `, `! C  U9 n
]& U) h; m. Q- j5 t# c) r
let k 04 {* o. r" y/ g4 T) }
let new1 0) h# G+ _" d7 Z
while [k < people]/ c3 ^- W% Z+ x3 L3 s
[
$ \) v5 J2 C' K( bset 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)
' f2 f& v* B' U# J+ S  I3 ]set k (k + 1)
6 t  R; ?; J; y$ }$ w( \]
' f& I( v5 V  u. vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! D' r7 X/ y4 P& O; iset global-reputation-list (replace-item j global-reputation-list new)- a- j& P' v- W( B# W$ W  ]
set j (j + 1)
$ `1 S% o4 W7 Y9 }0 E/ _/ U8 J]4 d9 N* Z( |+ I7 ^  |6 E
end
; Q. B9 R; a: J; Z  m
. s! w1 h. Q7 B& s
  o( v; J! E- W+ D" j0 A: E7 {8 \
2 Z8 I- Z6 _7 e9 rto get-color
, B* L( I8 e& T3 y7 e' [! Q8 m2 {: w. D6 u1 E4 q- m
set color blue
5 U* t9 l) p6 X* c# |1 p
end* X, w7 B: O  E/ K# s% D
5 i' C. v/ W1 a4 {7 _, k+ z
to poll-class
  C8 H  Q' ^" b* u% p9 a/ Dend
6 K7 p4 b3 m7 d/ |
: c9 |0 J/ e  `$ ?to setup-plot1: a4 p8 w1 C2 Y
# B& N9 e4 Q; ?' G  K% T4 k- q3 x
set-current-plot "Trends-of-Local-reputation"
  z' `  R, Y2 J/ q5 J

' _9 H: X6 z; W* gset-plot-x-range 0 xmax
/ o$ U& n% N  J: `( ~0 [" U1 W" ]

9 }  e" \! M. b5 B9 kset-plot-y-range 0.0 ymax

% `7 e" ^( C' G4 ~4 @1 }+ pend
. n5 X% E' @; [% z3 m: L: d: Q/ u" ?0 t
5 _" |) @% p. ^; a) ito setup-plot2
1 M# H4 X& L3 E: w6 {* Q# I. b
& K6 ~  }' h7 r) a% Hset-current-plot "Trends-of-global-reputation"

' l% B1 q% z2 C! G" b& `: L$ N& F
set-plot-x-range 0 xmax
) T  {/ @! m# M' \- V9 S

: R9 E* y2 z2 L; n6 ^set-plot-y-range 0.0 ymax
- f$ A/ {/ T8 |
end, p. R" v! J  G( p: x4 @! s2 ?

- H$ d' q6 i! S- qto setup-plot3; Y5 \. L, n  S6 H
/ a& V# G) G( m3 o0 ~/ N
set-current-plot "Trends-of-credibility"
6 Y" X, S2 m% o# R6 }! r. {+ h2 T

9 {0 A  z& w3 T! Tset-plot-x-range 0 xmax

$ S! G+ p9 J: ?, ~. N7 O: `
5 x5 f/ ?1 i! l9 Kset-plot-y-range 0.0 ymax

* X8 b4 S% Y) K% p5 X- O5 S, ]3 fend$ {* V9 H' e9 p. C
5 o% z1 I; t% v) m' t
to do-plots4 ]1 R. s$ ]. L4 Y
set-current-plot "Trends-of-Local-reputation"
0 L) }( J- s% z' g- d+ x, Wset-current-plot-pen "Honest service"& F4 J- M$ u+ Q" O
end) Y6 Z: m2 @! k, n
5 r; [5 I: z( g; n, o: Z
[ 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.
3 q$ e/ }  |/ `
' a3 a9 z8 m' e5 w7 n; C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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