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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:& v. r, Z0 L% G" `1 x/ D" v0 \; I
to do-business
) a( D: ?5 c+ b rt random 360
2 k) c2 e/ a4 M- K fd 16 b& ?" ^# o: S, z* P% U# l) y0 V3 |
ifelse(other turtles-here != nobody)[
+ c; s  m+ G! N! 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.
( c& X8 A' b# K/ O# A7 g( X: |   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      H  R' v+ j' J) Q4 D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# o$ r% g  ^2 T5 ]: a+ h   set [trade-record-one-len] of self length [trade-record-one] of self
" T( m! ~- A0 Y: O7 u# S' `( M   set trade-record-current( list (timer) (random money-upper-limit))
% `) M4 [/ y6 @3 V, G( b( `! v. E2 Y" o" v5 `
问题的提示如下:
/ g; x9 N& b3 Q: f, G  c  y
& `' [! ]+ T! a8 t/ D: X& v! nerror while turtle 50 running OF in procedure DO-BUSINESS, q3 _- A1 @% I; `, B; n$ Q
  called by procedure GO
: F4 j$ |2 c' T. u* x7 b. N, nOF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 ^. ?9 ^& {  k  W- x2 E" d: I1 W  I
(halted running of go)/ }9 l. r/ ]5 u
% N0 {3 g7 r2 P1 h1 C
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~~2 m, M$ @7 ~* q/ b2 O$ o
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* O# B3 m( `1 V! _3 Y
globals[: m5 w0 q* `  z5 i% {% w
xmax
$ S+ @; l( n  `1 s, D$ _ymax
( W: H. D, K  L0 ^) y, gglobal-reputation-list7 \; o7 N: k3 y

2 d- Q% Q6 `  _3 ?( Z& j;;
每一个turtle的全局声誉都存在此LIST" d% i2 H- K$ L4 }( e0 _2 i0 b
credibility-list# G5 [' @) G5 i
;;
每一个turtle的评价可信度# n. j) D: p: w* C* `  h& C5 G, B5 f
honest-service
! _' g) z& E. c- Junhonest-service% f5 e' r. d5 [5 C0 @
oscillation1 I7 v. D  Z! |& c% O% G( X1 Q
rand-dynamic3 l( N: _( N) M: q# p6 z
]0 V7 t- }' P& t7 O- X

! n8 M6 t4 Q: y: T! V$ i$ yturtles-own[
& ?9 D+ s" e$ |trade-record-all; [& S  Y" P% J5 S6 H
;;a list of lists,
trade-record-one组成
- P- ]2 p$ ?' O, y1 X$ strade-record-one
; q/ x+ [9 D& ^1 \/ C& J;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* t3 r0 c! T' j$ |

. J2 ~! B. x: S- b* t# n3 k;;[
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]]
; z9 }& d# V" P# V4 Ztrade-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]2 c" X' D1 ]9 g$ \2 |5 v5 O% I
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
; E6 p+ L( y" t7 R7 V5 [neighbor-total: r# i  E9 o% P2 K& q
;;
记录该turtle的邻居节点的数目
8 @# s& ^( e4 s2 N6 l2 S$ [0 mtrade-time
! A: [( z8 Y1 U: ^9 b. R  i;;
当前发生交易的turtle的交易时间4 x, G! P" I5 F/ U
appraise-give
8 z0 f+ D! i& ?% S/ o2 E/ I;;
当前发生交易时给出的评价
3 X- v' |5 g& a+ @appraise-receive
: ^( _5 C' p4 X;;
当前发生交易时收到的评价5 k- V: Z: I( w# y1 Z6 s
appraise-time2 I% d' V  [8 r5 W4 \; e1 w9 e
;;
当前发生交易时的评价时间
8 ^* p5 S9 V, O, o( B3 t' Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉9 b) A8 W: X+ S. D8 q3 n) B
trade-times-total
- C. k5 c: P6 A;;
与当前turtle的交易总次数
* i: W" S  K' r7 ntrade-money-total0 S8 w$ s9 a% \! f2 y5 @
;;
与当前turtle的交易总金额
' v) r9 f+ E& l+ Ulocal-reputation
( A# e% M! F$ P6 Vglobal-reputation3 T0 X) _) [3 ]6 }
credibility
5 a5 V3 u9 f3 G# q+ E. _' L;;
评价可信度,每次交易后都需要更新$ \6 {: s: \( q
credibility-all, [0 q% g& T8 ]# @
;;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 b) E/ |. [8 `* U1 K! c6 u
9 U. `7 d. U) w8 n& R;;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
9 d* r) ~6 d5 J' I1 {credibility-one
6 t6 g( Z4 |: t2 r$ j8 n; e;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
2 \" {: c7 H- Z  ^1 T) x' w2 K$ i) tglobal-proportion
; L7 n. }* @% E. Lcustomer
! D. x! O0 T9 L  F$ P  D! }4 ?; Acustomer-no
% i) c& n# C# Q/ _" |trust-ok
, n- m) T' E1 a4 g8 j% C9 Itrade-record-one-len;;trade-record-one的长度5 {. a3 `) a8 l& F% h
]" l- I' J" K" r

* Z0 G% P& q8 K" R+ g;;setup procedure
' N  }* i* d, X+ o, Y
1 `) I4 m- l5 k9 }' Ito setup
# Q2 [' I& X: R8 u) Z6 W" ^+ ], V
  W: E" X7 _$ ^% Z5 L$ yca
# o+ g# [4 O; V$ X5 G9 c

. C# X  a7 J1 L8 A- s; iinitialize-settings
& C' A" }0 g6 l" t

9 `9 v* c* a" A8 Qcrt people [setup-turtles]

% u: L) }# {5 R: `8 M
! U7 U1 c# X+ V9 dreset-timer
6 b1 {' W! n( m$ s# y
1 b& u. A0 Y9 z
poll-class

3 p3 H( ~7 H8 p- R1 U; k+ B8 ^2 b: N8 E9 h0 {
setup-plots

: A9 z+ R& ]4 Z8 k& ^- v
- E( v/ l$ f  j1 ]- @do-plots
2 Q6 w9 T; c" w9 m: M
end9 N3 R' Z0 E! a- O$ o0 ]
( y/ b: M4 N* o  h) k" k
to initialize-settings
) Q- L8 ]9 e' {" B# t* h$ k' D7 O# y; f! V
set global-reputation-list []

$ d) x4 x- ]  h# h) Q) e% g( i# C5 o! A( b0 E1 H, w
set credibility-list n-values people [0.5]
3 h0 }( t: L9 ]2 e+ D

0 T1 o: j: @; X& V5 T' Uset honest-service 0

5 M3 E$ `" o0 R! @4 W+ @$ b2 u1 m1 U, I/ l
set unhonest-service 0
" [2 U+ @) S* J& {3 ^' I

5 ^) P) N6 g3 U. T$ H6 O. xset oscillation 0
4 N9 t. P5 {1 S+ Z% J2 m7 Q& t8 M
3 f! h& `- q6 y1 p* Z
set rand-dynamic 0
4 Y0 s( t! ^! C+ |% }* C
end* \3 g/ c( }4 O/ h3 Z: g

  h% x( X- o' E: \$ Dto setup-turtles - m! \$ B! n- ^  _% q) R2 V. f
set shape "person"/ K4 Q# K: W) r6 S$ p
setxy random-xcor random-ycor
. M# A9 v' d, e+ K6 S4 ?9 d1 Dset trade-record-one []
# K" a: @( m: A# d
( T' }4 U" F7 w; q# U7 N3 [
set trade-record-all n-values people [(list (? + 1) 0 0)] 0 [" n5 K4 r1 y1 o# C- x
' w2 q' |# p2 j
set trade-record-current []* g! s# _' R" {/ ?0 A
set credibility-receive []+ B4 f" Y6 R/ P' w
set local-reputation 0.5# Q, @( D/ @. f- |
set neighbor-total 0
' U( g4 I3 P- b& cset trade-times-total 0
' [# G  [+ `& Z/ Q- h5 kset trade-money-total 0- z$ R7 d  \7 @! v
set customer nobody
% L- W$ H: p1 g; B  {4 Zset credibility-all n-values people [creat-credibility]
! `' E8 E/ W8 L$ J% L& Aset credibility n-values people [-1]+ o# |" I1 K3 i) ]4 L8 K$ I
get-color+ ]  a8 ]3 z1 l. ^: ~' W' F

7 J; S% O4 r- ]( ^end( i6 G, X. G3 y+ B

; _/ q5 K$ G# ?( u: q  Z( Nto-report creat-credibility8 w! i. @" c, x) H
report n-values people [0.5]
6 Z! u: ^5 M3 Hend
9 b& @2 i1 x( q2 A
6 G, D9 {4 d, ^; X, lto setup-plots# A$ H  M" P- v6 M% B+ a5 c' @

8 c' E% T% i' c6 P! Q$ X: |set xmax 30

4 |9 T% m4 @6 I2 D, a6 @. @* \' g3 ?( m7 R
set ymax 1.0
7 ?8 y) ^9 j0 s2 M1 ~8 C) g2 l7 R

) q7 ~! c" C  ^0 a! b, Wclear-all-plots
  A5 a; Y) E$ j" I. c+ o( `1 j
9 H: y+ O, U- Q8 t' T
setup-plot1

! r0 Z/ v' U- b6 c  Y7 p& Q1 R1 g4 b, _
setup-plot2
5 f, @' h) t1 b

$ W" }" k7 Y% U6 Gsetup-plot3

9 w1 Y8 l" [/ u9 s: Q6 ~end" e* X% G6 ?0 I
3 ]; q  \, C; n2 S' j
;;run time procedures/ p; c* A# I5 f# H' r+ N+ G0 n

. z* q- v5 T. M2 H/ uto go
8 v% b+ a/ L" k) T& u% X0 n' A" w7 K- o
ask turtles [do-business]

! a$ ^6 y- l# l5 [% @  l, R8 gend( p: e- S3 b3 {1 W  z* ?& R

  }6 s: X. U: z: j1 ]& l3 m+ Gto do-business / M9 w, j0 h7 w$ I$ b. j
5 Z1 A, m! I/ t1 V

+ g1 }# n6 L7 L( m/ Prt random 360

  Q" A& z6 c( F( E# U7 M
* }. V+ L, o9 m$ ~8 ?9 Q) m, lfd 1

. h0 z2 B! T, r
$ E4 |9 ]8 x0 F  j! Z0 J/ Rifelse(other turtles-here != nobody)[

7 q/ e( O( H1 ]1 k7 J2 z% _! u& m8 u
' x7 p9 d( i* a( u1 d/ e! R" Bset customer one-of other turtles-here
* o/ @" [0 i! g6 X5 v
0 a% K$ _5 c- r, E  W
;; set [customer] of customer myself
' f  V# z* N2 i4 i, T

, _2 p4 b. ~$ Z; v2 }: ?set [trade-record-one] of self item (([who] of customer) - 1)6 F/ q$ o0 m+ h5 f% X
[trade-record-all]of self* d- Z( p8 @. X8 e3 }0 v0 V3 g: D- }
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: {; b* [$ \# e
6 ~! W" \4 F+ K0 A  S
set [trade-record-one] of customer item (([who] of self) - 1)
6 l$ q" |8 ~! M2 J3 h2 B/ H; ~[trade-record-all]of customer

5 }" j5 m/ C6 l7 Z2 s' {4 a9 [+ B, S( G- p
set [trade-record-one-len] of self length [trade-record-one] of self
7 {7 ]8 H# ~: s2 F# y5 j3 ~! L7 u3 a
2 N( Q# G3 ]; k0 B5 X
set trade-record-current( list (timer) (random money-upper-limit))

9 E" e" N+ R0 s! D: m# e( o  h% a/ Q
3 d# w9 j" Z1 f9 w9 T1 {ask self [do-trust]1 ^( A& x* i/ C" h4 x9 {7 l
;;
先求ij的信任度! l' D4 R/ N+ n

4 }6 n* ^3 X2 @% i3 y( Qif ([trust-ok] of self)
: J0 r$ p5 j$ V; w;;
根据ij的信任度来决定是否与j进行交易[
+ P- v: X) x4 {& W  Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* e( z- o. e+ k3 N' y
6 i- x/ J: S% ^# o# h. [$ [[

' K0 J" I% O6 Z* m/ N0 {3 w5 ?
1 g9 x: u* ~1 x- q6 ldo-trade
% y6 Q7 O3 b7 i9 `

' b6 o- x+ u6 M& Qupdate-credibility-ijl

  D0 S. X! O+ J: M* q; Z" T
# x4 W& D5 q5 J% ?# cupdate-credibility-list
" P& v. l$ D; g7 x, B' N

5 J) U! q& ~; F1 o* j
) q& r4 N1 S; Gupdate-global-reputation-list

1 k- E: s+ n- o9 U2 t2 l  g# [" S2 j: Q
poll-class

& N8 ^2 p& t) s8 |, X1 r* b# ~
4 h& P: L. A5 U- W+ o) h0 D$ `0 `get-color
# M+ f# D4 c% Z3 y) N

' S1 z$ @4 W+ i+ j" P]]
' V8 Q. @2 C5 I4 P. J" S$ h1 h# C# J4 C" D2 C+ x
;;
如果所得的信任度满足条件,则进行交易
: Y3 e; |) `0 h( w. X5 X6 `5 ?
: |3 M# u6 J+ x  ]" z/ f( {) y0 g% c[

+ y6 |; R) \7 R5 q0 g2 [" A+ r( I* ?  w5 j
rt random 360
$ t& z/ @( U4 U# `0 k; s+ a, ?

8 \( e+ g+ z% rfd 1
- B* j; v, k; Z; x# v! ^$ m( p! b4 m
% A6 h6 `" |8 F; F
]

( c% a3 u' e* p4 i
8 a& `& |/ y3 _! @end
! ~( B/ z, {+ a/ G$ ^

- i; B- @+ B$ P5 t4 a, Z; Mto do-trust 3 F0 h( O6 a5 o
set trust-ok False
! t3 ?1 K2 y$ E% a* c* v
; j# O* m9 `& P2 ^: v" T5 y

, f+ e3 ]8 }! E0 M! H+ P+ Clet max-trade-times 0
9 ^( C9 m' `8 u$ \+ ?$ V/ E/ hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 F: G, i* r& O' A/ [
let max-trade-money 00 \+ [! q" t2 L& d6 }+ E" T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 c/ X5 |9 H4 l, z$ \* \+ Klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( V( \2 m) y, K% d
  c' h8 @; E$ D( |

% v: A% F! ?: bget-global-proportion/ `& L- o% s8 q: a: F, `5 x; H' f
let trust-value9 w& p/ l+ X' \8 E- F. L+ o
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)

2 T, |& ]% j) v: w% `if(trust-value > trade-trust-value)- R6 j' Z4 z. @# Q
[set trust-ok true]" A9 \+ m# b8 T* U5 \3 \
end
+ }0 P% ~8 G1 d1 D" L5 I1 G1 r1 y0 w4 w
to get-global-proportion$ a1 I8 X2 G! u% H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 U0 b  I* K( Z" d& @) c[set global-proportion 0]
; R! d3 S' H8 Y1 h[let i 0# i  c7 o0 ~- B  C
let sum-money 0) c% e0 z' D+ ~, w- r6 e6 X
while[ i < people]9 t  ^" y% l& B- D$ f% J
[! h: v2 m. o8 Z$ U$ x( L
if( length (item i  Q* J) D. m  I  n) f
[trade-record-all] of customer) > 3 )
: ~7 y9 z7 q5 t# b# L" w
[
* U% w6 V3 A9 c+ i- c8 f6 tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 I5 C2 R3 {2 Q/ o1 n]
& O& M7 m2 r; r]3 A( s. R9 _$ y& ^( w* |6 F  H
let j 0; d- k+ S/ E  N+ C4 g8 o  i
let note 0+ R4 X; a) h+ f/ z' n. {% h
while[ j < people]# c4 {# h/ e, x4 G- B- Z4 ^
[* R1 H* K' V9 Z
if( length (item i2 [3 _& u, q- j' @0 [: @$ w2 H- t
[trade-record-all] of customer) > 3 )

6 H, e( j2 E6 ^$ ]$ S: i7 g- U1 g/ S$ D[! N9 n( u0 D5 i# Y$ s8 ^$ }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  k6 J/ k# |- l& K/ W' N' @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! T( z  I& M& S8 _7 Q7 s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ @4 Q, g# p# v* @- x
]$ I( W2 z$ ?! Y3 j
]3 a6 ?+ P" z' [) I4 E, e, M
set global-proportion note* ?2 w: B  `6 D) R- i
]
7 b/ e7 Y' N' Bend  g4 @* Q: C" v( y5 I& m

# i' B( z" }; M; E# P$ N/ |0 cto do-trade0 K+ \9 t) X' u- Z" r
;;
这个过程实际上是给双方作出评价的过程
+ |* l$ B$ ^; Q+ {% g1 o& Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; l" s( w9 c) ]# w  s  H2 X' n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: x9 T% |. F7 Bset trade-record-current lput(timer) trade-record-current
% S1 I0 M* B8 Z( u$ O;;
评价时间
) A  j# Z: P- wask myself [
- s0 G8 P/ r3 }. Eupdate-local-reputation
! H& j% ?/ i. B& `7 Yset trade-record-current lput([local-reputation] of myself) trade-record-current
3 ?6 ]9 D! U6 A) d( D2 t]
+ @9 f+ Z6 y/ B$ w+ g% E0 Z# N% e0 |3 |set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& u9 X% e5 t, t: d8 ~! ]9 c
;;
将此次交易的记录加入到trade-record-one0 m% Y9 }0 |! u. S2 [& Z& |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 {& M- i/ @( o1 h
let note (item 2 trade-record-current )
0 L! i1 T) V- v% p; o& Y- fset trade-record-current
- j& x% G: {/ S$ _. ]* J# r(replace-item 2 trade-record-current (item 3 trade-record-current))
* g3 F2 ~% d# @. U
set trade-record-current
1 k. p# }/ i0 d: M(replace-item 3 trade-record-current note)
8 v& n5 ?% d  c% R' @/ X: t' b$ \+ _( j" _9 K, }# G8 j! K/ U7 H
4 @, W3 i' e1 X. j% ^6 |( s: O, @! c
ask customer [
7 z) B& I! @$ U! t3 H" A" Rupdate-local-reputation
9 I, o( r, m$ A. I! c% U* h5 R/ }/ X  rset trade-record-current
) p" @* w" s1 @! m5 F, ]' V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 h% p. `) E& A# j5 i8 Z# v+ l]
7 O6 _1 F- f) }8 O+ u: j
: o+ e* O4 T# h/ Q( d3 h( r

. D: d$ i8 {# t1 V0 n9 gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& b/ M8 d8 M# i8 q% a6 N

8 C4 V( g- x) `5 v" z- `% Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# p" ?0 B6 j. R3 A% h: f5 u;;
将此次交易的记录加入到customertrade-record-all/ [* P2 E) G7 T8 i
end
7 o: n% H2 w1 e4 T/ t+ a1 B& v) |; W7 Y3 I
to update-local-reputation) F3 I' C* X) ~/ j9 A& j
set [trade-record-one-len] of myself length [trade-record-one] of myself9 Z- Q8 x9 X( D5 S

' B: q3 A  r) r2 b/ D( y7 ~
& f! t" K3 ?: o8 u9 D3 }$ `: q;;if [trade-record-one-len] of myself > 3
, A2 E: e/ Q3 p* R
update-neighbor-total
# s" s/ ]7 Y& v1 M# I5 t* ?$ x;;
更新邻居节点的数目,在此进行
. b$ ~2 G0 B; h* x/ k+ Elet i 34 J+ `$ N- X! f4 j; C% U
let sum-time 0
" X% s8 G6 o( K) r1 Hwhile[i < [trade-record-one-len] of myself]
3 {& k& H8 k, X[* }5 [6 N4 _' Q. D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 [7 b; m, G) a4 B1 [
set i
, s* \- t5 E- o) u6 U- m# t1 o( i + 1)
' E0 l; _: F+ c7 C# W* E
]" l3 D, W0 K6 h/ w1 u+ t
let j 3
# C# }# D; U3 X5 _let sum-money 0
6 ^9 N+ r3 P# Y5 i, H+ qwhile[j < [trade-record-one-len] of myself]
5 l, O2 c7 a' S: E9 ?3 `[4 L1 ?+ r& z5 N. A7 L: G2 g* h7 L
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)
/ g# I" f( ]1 H$ `  e, d5 h- w0 gset j- h- q6 J) W! l
( j + 1)

8 z7 u+ ^9 {0 E]
& {$ X5 L& q5 J+ n4 G2 N6 a0 Alet k 3( H  E" k( E' B% j
let power 0
' f' a8 O9 o( o" n0 p5 tlet local 0
3 O4 b  m4 i+ u6 wwhile [k <[trade-record-one-len] of myself]
8 p$ \# x! H' q$ Q[% J$ Z0 u+ f2 @
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) ( o* t% ^( i* F% ]" [8 s  `
set k (k + 1)5 E% c" e0 X- Q) {* v( V
]
# W8 i) f* r; W6 Gset [local-reputation] of myself (local)
3 ~- V2 J( S$ |1 }7 [* K2 g/ xend* c$ h8 M: N9 I2 D
% \9 J5 H7 g6 H$ o: o# `- l9 e/ P5 G
to update-neighbor-total
7 H: b% E" z" g3 ?( q  y, K& Z% d& x* d9 ?4 M% T; y7 n' a/ }; ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! f% f1 M: y1 n0 y% c6 x
* }. H" k! U. t) r1 k
) }' h' K& U' a# ^- V8 h
end1 n6 w0 \/ N$ v; h4 [# A

1 \+ S8 d2 C& S2 I: [4 R; m8 T9 Vto update-credibility-ijl
2 H/ `. a4 D5 O& }7 |1 A1 ^+ U
7 }4 m- h/ K. z" l8 j7 B+ 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。
8 @& G4 o$ F% a9 h, u* G0 C1 Llet l 04 ?9 ~8 R9 h8 \7 h4 E
while[ l < people ]; [7 z) c1 c+ e- g+ M: 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, L" W1 x1 ]4 o" k* U
[' l( \9 I0 R7 G4 l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 U8 I$ i1 ]! eif (trade-record-one-j-l-len > 3)
2 {$ J" G$ r' a- Y5 z7 c[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; D' _/ t$ C! i! k) ]* J% V- P. J3 o9 q
let i 38 w" }9 D+ E' [4 y1 w# u
let sum-time 0: @# ]3 G* f- a' N
while[i < trade-record-one-len]
% U0 S1 j5 f6 Y* _+ t& ^1 p# A# [[4 k" D1 O* @) _. N( Z/ O% u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). w" |+ ~; y- h. |2 d; ?" F# s0 q
set i' f- a' d. p& V% p2 ^2 m5 K0 L
( i + 1)

6 G  s! _7 H* P) I]
# _' X9 C7 L3 g. ~: R8 f; i. Olet credibility-i-j-l 0
: ~8 n+ A6 t4 R. S;;i
评价(jjl的评价)
& Q% d' J8 G8 ylet j 3
" \2 r$ Q' w" K9 l* n% Ilet k 4, P+ Q3 L2 C) U9 Z6 ~* Z2 ^2 e
while[j < trade-record-one-len]9 k5 o% w9 o6 c6 k; J
[
* Q. m% R' I0 s6 O4 f; vwhile [((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
1 r: U" @$ c5 q0 `* lset 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)( K9 _( F) [6 ]; y3 C# C( a
set j+ m) a, ]; ~0 y( E
( j + 1)
3 {! J8 F; D. c9 ]
]
4 k* x" _- _* U' \1 mset [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 ))
- I5 l$ E4 B4 P7 ]/ O- u+ _
0 g7 Z, J3 s6 I( |4 g
6 Z' v+ {8 b, G3 v- u( i" l
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 O! t4 m& a5 T' j;;
及时更新il的评价质量的评价9 @* m( z- ^: G' b/ {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
2 |  ]2 n+ X1 g2 s+ L; bset l (l + 1)
  Q! S6 X* p  Z4 H& {' a]7 g2 N) L5 H) J7 j: }
end, r2 O9 F  {. d3 e$ q! b1 [* i
. y: ~; C# e6 k
to update-credibility-list
3 V1 }- @: S6 r: l+ llet i 0
" e. u6 K# k; g* X" S' B. vwhile[i < people]
7 f4 k% f' B; h. c1 u[
$ J7 N% K1 X  ?. h% v. E5 ?. P% Ulet j 0% |: j+ V6 a; I5 b4 q9 q- M# j
let note 01 R1 Z' b6 t9 S6 O
let k 0
2 x( l, b8 E8 j9 y, ^;;
计作出过评价的邻居节点的数目
) K$ Q1 _" {0 J! `; I" m3 Xwhile[j < people]
% l9 k5 n" \5 k6 M3 `: t[8 \- o: N$ x/ U5 w
if (item j( [credibility] of turtle (i + 1)) != -1)
  A8 o- U( u6 k; X/ r* }' c+ l# B$ x;;
判断是否给本turtle的评价质量做出过评价的节点" _8 o: w4 {" X9 b3 {
[set note (note + item j ([credibility]of turtle (i + 1)))
8 f, _( s- [& Y3 `;;*(exp (-(people - 2)))/(people - 2))]

" R9 [5 ~- S8 Y0 f* T* wset k (k + 1)+ P% N) g' g' S5 M  ^. H8 X8 [
]
: k0 A6 M- K: H6 x' Bset j (j + 1)
2 f' X3 k$ v2 u. k4 N1 @  h% {]1 V) C8 F: b: ]5 X5 E, p, u
set note (note *(exp (- (1 / k)))/ k)
5 L7 K+ j+ J- O9 D  P' z/ qset credibility-list (replace-item i credibility-list note)
* u2 T3 W$ d5 i( W0 ?set i (i + 1)6 I5 B! ?. ^/ \* s5 k9 T2 k% R
]4 E9 ~3 s! z9 g7 B8 o9 O
end
3 p0 M, \6 d- d( _, C% T( L/ u3 E" \
to update-global-reputation-list3 n4 @& [% m) C# g# n, ^# h
let j 0
' k  p0 H. x  _: I. nwhile[j < people]  `: ]! @& J; Z, x8 G9 H
[: j& ]* F- ]; K6 {$ S3 b+ n4 y
let new 0: P+ T7 l4 p7 q# A
;;
暂存新的一个全局声誉2 i6 v+ q  n. R1 v& O$ A4 X
let i 0
1 {  z5 y7 {, a) G; vlet sum-money 0" h& D0 d* _0 m- {1 R; a
let credibility-money 0
! i; i5 D0 D' F% p$ Ywhile [i < people]
1 p+ Y. E3 b( b* c+ J[
( f0 Y8 L$ e( n0 \4 Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* H+ @$ q8 B/ @
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ ]  I) }; l& x8 C3 Vset i (i + 1)
6 ?8 Q' p5 X3 Y+ A- z]
& s7 M+ j8 P" n; Mlet k 0
0 a1 V/ }0 G' @. Ylet new1 0
; A& X: \, L; gwhile [k < people]; @% Y5 V2 Q4 k9 `; H. w6 T
[
  ?' M0 p7 f: ~9 i5 i- ~- o# L& ~9 p: |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)6 B  a: P( T* j' _' K3 f
set k (k + 1)8 ~3 G" o* R% _! ^; Y6 P
]* t& e5 r! i" ~+ ~+ H$ t, B9 k
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 z# c+ R' `" V! qset global-reputation-list (replace-item j global-reputation-list new)
" t" E6 {( e7 h$ c  s4 cset j (j + 1)5 _/ L3 S* E1 F6 N/ A! K
]
* c5 U" t9 ]5 H: U. }' C+ T* Oend
0 [; R' z" T. `0 @! v
/ K: q: X/ V- T8 [/ E4 ~; @! s, t3 C- e" _" b

* Z7 ?! [+ n: n4 O7 D' Ito get-color% N9 r; ]3 O. H, [7 y, r8 B
& M' Z% ?1 W' h2 q. p; {4 R
set color blue

0 P1 b, j2 {7 a8 y' {1 `end( |+ }2 l* y( f5 z1 A+ R8 t

& @  E# k- A7 J: {& Lto poll-class
- s, w  ]) l' u' w! L: B$ ^- M$ Aend9 ]& r5 j2 P3 U5 I3 i

! b" f5 X7 l; @& I/ T3 nto setup-plot19 d! {" f; @3 K- k

8 A, [4 M) w) ^* zset-current-plot "Trends-of-Local-reputation"
0 P8 c* V: P7 G  P: u# H

. h2 j& [/ n9 o5 V5 `. d7 pset-plot-x-range 0 xmax

8 a) {2 h  M6 \3 y" i, y# P2 j
3 i+ ]& d+ {+ I5 ?set-plot-y-range 0.0 ymax
. f6 d! n3 l/ m; i
end
! p" G- c7 T5 K/ z+ r' ~$ `3 B/ U* {8 V% X7 H7 Q+ ?
to setup-plot2' K' w, z5 F; z8 _/ P& w* f5 [- F

. q* w$ X# q: \& n7 g1 U; [( rset-current-plot "Trends-of-global-reputation"
3 ?/ M! o2 c- a) ]0 ~0 }2 Z

) b$ h6 _) k- K/ ]* Qset-plot-x-range 0 xmax
" |% g! _9 b  z/ s( O1 A# c: p
  S. {1 b# ~/ m$ B8 l3 N6 v4 B
set-plot-y-range 0.0 ymax

: f* b3 b# e' `5 N+ g% M8 ]9 _0 Dend
) b8 @6 y/ Z1 o6 J, @3 u( Y0 W9 t7 ^3 b
to setup-plot3
2 s( P: Z, `/ c8 Q
( D& D8 I$ x% w. V- Y# Y8 aset-current-plot "Trends-of-credibility"

* i# |4 U0 B/ h& ^! a1 h* m/ H
! R! M9 Y8 t1 F  R; a3 nset-plot-x-range 0 xmax

# E$ q  p' i, F7 A; m) S+ \! B. J1 w1 }; X
set-plot-y-range 0.0 ymax

3 T+ f8 S& P* dend
) g. x: @& R& ~; \# J: ]0 N! Z# l6 i+ b3 S$ c
to do-plots
  D- k& S6 b+ a( ]' Q+ yset-current-plot "Trends-of-Local-reputation"5 f* W$ i' w8 ?  P) H
set-current-plot-pen "Honest service"
/ k1 o, h, o: [end
! Z. U3 Q; _* k: H! K/ }1 a+ }
3 I4 s0 w/ p9 u& @[ 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.$ L) t  X8 u2 v# E" y: f7 K! A0 |% M, v

2 N2 w7 h' x; L2 o, R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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