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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:
- b# ~1 T( r9 w$ N! [to do-business 5 F/ m; T, d2 k* f0 _& S
rt random 360
# ?. ?' G" x( e% c& v fd 1
& K1 R8 V* ]% n/ K/ H' Z, v ifelse(other turtles-here != nobody)[
, W; X. x: }9 [: c+ i8 {   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.$ [" |: }% J9 b1 J7 x7 X
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) ~8 {6 R( r2 t; [$ P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& k# V- D, G" d  y( t; u& {$ d
   set [trade-record-one-len] of self length [trade-record-one] of self
: X  g- |# }6 Q# |: H* H' a   set trade-record-current( list (timer) (random money-upper-limit))! t8 ^) Y0 p0 H, H

9 w& K: G3 k  _% l: c, C  D* p问题的提示如下:
4 m3 Z. }) L/ t) ~/ T
% ^0 g8 D6 }' D' B7 Jerror while turtle 50 running OF in procedure DO-BUSINESS& y; p7 _8 b/ \- F( \6 ?1 _: Z$ O
  called by procedure GO1 Y& ]; j" d( D& S- d, f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 V, l0 E7 ?9 s  T3 n: i8 A+ M
(halted running of go)8 O3 m& O) ~, W8 B$ ?+ N0 k, i
* `* i4 C4 {) S& i. Q6 e9 H
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~~" j; k$ [' E+ G: `7 w
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教0 _/ X+ t/ k. B8 u! F
globals[
3 D% m2 q. l( G. J. Y; U: Vxmax
# M. r, u6 F/ P! W: J1 \* [5 Oymax
/ ~6 Y$ M& I/ d3 L; F$ Y$ r0 J0 Gglobal-reputation-list
) {8 i5 B4 G1 f' J- t% R! c
# u% d7 }" b4 E7 {% R;;
每一个turtle的全局声誉都存在此LIST! r& M9 `! f5 ?  s5 j1 q2 T
credibility-list/ w$ m6 J. G4 y- n' P: ~0 M
;;
每一个turtle的评价可信度: U1 E' V# _6 _) O
honest-service2 ?$ m) C! l" r( y
unhonest-service3 n$ W- R  x' {% U
oscillation' F, W( C1 V! v# c9 b, \
rand-dynamic- |' P7 [0 W& W' l0 |
]0 G* L: m9 J7 S- O( i6 c

: ^: f' D% E- ^' A  Zturtles-own[6 e: v/ H. |" v1 O  `5 u- t
trade-record-all
) }$ ^2 k! w1 d2 o8 W) I. d6 u" B;;a list of lists,
trade-record-one组成; @/ e( u; q% Y1 d
trade-record-one
  c) H) A# Y% @4 ?# f% \7 y& 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
4 f* d6 w1 {0 Z- T5 p4 {1 S3 B( r* g
;;[
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]]
* w5 T4 {; K! e8 m- o7 C& C2 Otrade-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]
! A5 I, H' Q5 p5 Rcredibility-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$ l. G0 c$ c4 X7 ]$ g' A6 j' G
neighbor-total
" a! @4 _) t9 c2 ~;;
记录该turtle的邻居节点的数目
+ l1 h6 D% P" `& R$ Itrade-time
6 C" m4 k0 O: e) f3 f;;
当前发生交易的turtle的交易时间* E0 a/ N$ `6 O5 P  g! @
appraise-give
6 z5 ~6 t6 Y+ |/ f0 z3 [# n+ P4 G;;
当前发生交易时给出的评价  f* |( S5 J# `- X( f
appraise-receive
4 F/ N0 C$ ?( c;;
当前发生交易时收到的评价
# X! v8 R3 h: f6 _appraise-time
5 Z. \: Q0 u8 H0 i' [+ f;;
当前发生交易时的评价时间9 G9 U, Z  l2 g% B: R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% c) O! T0 t$ g$ C. k" Ktrade-times-total6 F& g& P; N/ ~
;;
与当前turtle的交易总次数
8 j' y3 d8 O3 p) B* Xtrade-money-total7 n1 a: I0 z/ S0 }2 ]
;;
与当前turtle的交易总金额% j! p* C2 g$ T% T
local-reputation0 e) d( W* i. L+ c) ^/ h
global-reputation
5 R( ~, Y, S  d. h( xcredibility
- L. g+ Z) e. N5 X% U" Q;;
评价可信度,每次交易后都需要更新
/ E, h7 p$ P# m5 A: o! l( ~credibility-all1 i; j3 b2 H/ V8 _
;;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+ }  e- d' C7 ]+ ^) w" x

" T5 I  G4 y; G+ o+ w;;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0.58 J! u  T' x& v# K4 }
credibility-one) N  O  v& z5 I3 i7 D
;;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
: v7 ]" U: N# u2 g- ?; Nglobal-proportion0 f) _: W6 {6 X, ]% j5 B7 G
customer
( C8 J# w* o) @9 T. K& e+ Ccustomer-no
  q  U! s6 V( P( Ltrust-ok
( e. B6 j1 `0 P( ftrade-record-one-len;;trade-record-one的长度# i% B* {! A0 V1 W% z
]
- Q' C# L6 {3 i% a* l% K7 s, A, K# Y/ W, t+ }* r
;;setup procedure
2 T/ Z- B8 h( ~- x5 e- Y, `. H  k
' M' L& l$ {* t4 H) Mto setup8 G: z. C, @3 b; _" F5 z% `$ `* W3 a. Q- H
2 q# P4 c4 e$ U9 m: w7 `
ca

# v# v- w9 i* D2 a8 Y* I" S+ \# j- n; C
initialize-settings

4 D' [& I& B# ?/ G8 i
+ g4 V3 ]2 g* s( [" ccrt people [setup-turtles]
$ T; s% ?0 g% r$ d& I$ S) @
- z) ]) ^  k: j' G$ ~* P  m
reset-timer
# `) Z# A- ~6 G0 L, G2 e; T$ [+ U1 D

6 s( e# o" P8 |8 Upoll-class

8 D% V5 q6 R5 f  v$ i% @9 B4 O/ \2 |4 z" ^4 R2 v2 k2 \' X
setup-plots
. D) `: q% Q, ~6 B
- R* ]+ ~. ?" p7 i% R
do-plots
" \* u0 F( F2 T8 s5 E
end
( {9 C  e4 ^) ]% B' M! |( G5 z+ f8 @7 O" |# f; [$ G! A
to initialize-settings
4 L% v, O. `% c9 w. s: @: _, S
! a) r8 ^- V* ]* N, Fset global-reputation-list []

# A, {! n. l" V7 s2 X4 S- T2 v3 z
set credibility-list n-values people [0.5]
; S6 R3 P$ C! ~% c% }' T6 z+ i

1 N+ z# i. U3 \set honest-service 0
* u3 t% F6 \) F) e
! `- h2 }5 \" L) C
set unhonest-service 0
) V7 T$ b2 I. v) D( o' Q9 s! Y

1 w; e! F* v+ H. bset oscillation 0
/ _3 d2 m4 g. \6 o; a* j# x
9 e8 D; f, _& r0 m* u) b
set rand-dynamic 0
; L) I! F! k) h# U  C
end- Z: D* Z9 K) t* b- f5 Z  U

; W8 U' w' H3 [to setup-turtles 2 A9 t, g/ [. g! M: n6 X" ?9 P
set shape "person"
# s* s9 [; ^6 X" l* `' ^setxy random-xcor random-ycor
  F7 n/ C: k6 T6 Z8 v# Lset trade-record-one []
6 _# W6 C1 G* X' Q

! N* `( U; ]( p4 M! ?- fset trade-record-all n-values people [(list (? + 1) 0 0)] 2 Y3 X5 ?$ ~4 U% z

. I0 k8 J4 B  A5 D1 ^. h  vset trade-record-current []
) q: i( O' k2 Lset credibility-receive []
' J4 o# r) }+ \% ]9 pset local-reputation 0.5" ~) i; ]) i8 ?; o& \& b" Q
set neighbor-total 07 m- j5 a, f7 f# Y
set trade-times-total 0: I( B$ ?) ]( f. \
set trade-money-total 0' Q" A* e* B2 y
set customer nobody& A7 w: c1 ?4 [: U$ l' }
set credibility-all n-values people [creat-credibility]+ t! X- Q" q: T; B4 E
set credibility n-values people [-1]- G) j" w3 Q6 s0 T: i1 |6 @7 L7 I
get-color
( |! _# _* k) j  H$ k6 N

% L* X1 J# _$ K9 L8 ]- z1 p3 ^end5 g' H( c# O2 y% M& y# L
: P  y0 o. N6 g
to-report creat-credibility0 \# u7 W& n$ k' j, F* Z! ^* i
report n-values people [0.5]
2 ^5 }- R' {4 |. C5 m1 |end
: b5 b5 _5 L& `; ^6 K
0 @* v% n. Y& K0 ~8 }to setup-plots% [1 c$ g! e* I  V' B- Z
+ B% w/ }% r" j1 g
set xmax 30
, n2 t+ U- }7 B) ?& G! j7 ?

: \; U4 m5 _7 W, f- u  Nset ymax 1.0

: k0 q' w1 c' S' O. H8 ^3 e0 Z1 s# `; V1 \1 R8 }1 P
clear-all-plots

) k3 E" D. _- @* r6 z% e( h; j1 y/ w: M4 v
setup-plot1
) K" o, Q# X& \; Z  }6 K8 v
1 _+ p2 y8 j! w6 s4 `! l: L5 K
setup-plot2
* A2 K4 t9 k7 c
/ U4 j$ B4 ~$ M
setup-plot3
* s$ W5 j4 T! s' e: [/ R; M# c  Y
end9 o  c8 z2 a! i0 I4 X6 g& I5 s# Z

. X- ]; D9 d6 k0 D6 r: s" w;;run time procedures" K$ C8 G& Z6 t! m6 g

" g& |) b& d9 m# W7 }8 Fto go1 }# Y, \9 a+ d' j& j2 b5 ?2 ]0 F

  [9 h& O, @- t* z1 }  h  p( kask turtles [do-business]

* z& M/ p6 j0 H  u0 L6 ]1 D- Send, e3 R; ?$ O* L1 M3 h
, ^& F  Z& t! s) ^! L# t+ r8 z
to do-business
- I7 S, v8 o; u' I+ Z5 |
! c6 W" S4 k$ c  ~1 H  k

+ \, T( f' V) Z3 Ert random 360
& U: _( p3 A" @0 x$ F, T2 d% ^) y. P- Q

: x0 b0 v, G9 Q$ f+ ?4 r( r9 efd 1
1 X/ S% o' ^0 n, L/ n) e- ~6 b% ]4 g
5 d8 Y9 B" b5 S$ I2 x
ifelse(other turtles-here != nobody)[
/ H$ N9 n9 o. P- r) m4 C  O$ U

; C$ @% G$ o# T( q9 Y9 Iset customer one-of other turtles-here

6 J( q' U4 S; A+ N) c% n7 Q' ?3 S% m& h8 m7 E: W, j  `, J% R
;; set [customer] of customer myself
9 E9 I% t7 B( j' G0 x. D; x
) T% w9 I, i3 q; g! d: \
set [trade-record-one] of self item (([who] of customer) - 1)
, O0 T: ?' P5 S) `[trade-record-all]of self, Y+ u9 }' `$ N7 u: a6 m% c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" M* B( G- [9 ]; k7 f

. a3 @! z$ L9 b6 J; }+ bset [trade-record-one] of customer item (([who] of self) - 1)
6 N% I: o7 t7 ?5 p# ^8 e  J[trade-record-all]of customer
( B* Q, ?2 f2 d( _$ d- D7 l
- t5 t$ E  g7 C2 H
set [trade-record-one-len] of self length [trade-record-one] of self

% A! g: ]- P3 b( d( o# |" s8 }. C& Z, ?: w; X# B
set trade-record-current( list (timer) (random money-upper-limit))

0 y* z0 Q8 \+ ]; I- C8 l: d- V- x, n6 H* o7 v2 z" m
ask self [do-trust]) }. }/ s/ s( m4 Q9 L9 m
;;
先求ij的信任度
5 C6 f9 W7 p3 x7 A, b
1 e& A# p( F- h1 jif ([trust-ok] of self)
1 w, Z9 n0 v5 m% n$ {% w;;
根据ij的信任度来决定是否与j进行交易[3 t, R5 L, ]/ j6 g# k! F% ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ I# q0 v2 B' I" {0 U% Q, M/ `* n. O

( e: f0 {9 d0 T7 o+ M; a" m[
7 Y! V8 m4 c8 \

+ L4 F3 M( t% O& u' Q$ N8 C- a, [do-trade
  Z$ C0 Y+ {/ _. ~9 {  D7 |: m

( p. U5 u4 [6 ?  |update-credibility-ijl
' L! c5 I: `. L% Q; G, o0 V+ z
& O; b& O5 T* k3 C9 L
update-credibility-list
. c' z) ^2 V5 P8 t& b9 W& p- I
% ~! q+ T" {1 ~& l
, T& t  X$ G. V, f, W4 o
update-global-reputation-list

: F8 J: ]9 B. }) t4 ?5 J/ U9 U+ ]0 T, s
poll-class
3 \8 @* w! A$ g9 A7 \0 y2 H

( h6 F+ m7 I! q, O3 Z( q" Zget-color

/ ~. H% Q9 O' `2 ]' ~. r5 ~
; D' Y$ z2 A0 ~% g# M) i]]# v# k8 Z+ r0 ?' T( p
7 g5 }/ i$ J% |$ H/ K5 _  A2 o7 {
;;
如果所得的信任度满足条件,则进行交易# G/ x: G) U& L$ _4 m8 N% F. [/ o
7 @2 K# F, p( j" g: w
[

$ F) b+ o: F5 c2 N: U7 _  `8 e) H/ q( u" k
rt random 360

! w+ E1 P* w' l2 L+ |; Z! E6 b* ~4 a* e
fd 1
; E( Q, \! ~# o: g: }
6 |) l  W" v. F4 w* D& x* Q+ s
]
+ ]! S2 j& ^$ }! R$ Z) C! ]
6 s' {' F/ y) M+ }/ ~) D
end
8 Z9 q3 L' y; x3 G
! {4 D% k, i) Y% T
to do-trust ( c6 }0 B8 b' c# V  H4 K* @: ]
set trust-ok False6 t& H0 d. P8 R9 F5 g% r# C) j
* ]1 l* I4 q0 I7 K5 {# Z5 y

; |( h9 r* w- C8 P8 _" _let max-trade-times 0
' T  i4 b* S& P* P1 K9 H/ Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 [4 g2 R1 s  {  c, T- g- R; Wlet max-trade-money 0$ q6 e$ ]/ k2 \& Q9 O: i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; w1 ?" r" ?. U4 nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); _# j6 h0 M  ]% u& [8 f
& k) R0 a0 t8 `) f! r

5 B+ F2 @5 V- f% \% m) k1 }get-global-proportion1 c# U+ x( x. h2 ^
let trust-value" h( J9 e. @$ d0 f( R
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)
- k3 Y0 B* g5 `
if(trust-value > trade-trust-value)# s0 o: j& z& @0 w
[set trust-ok true]: Q% x+ Q  H4 v5 D
end
: {3 S3 V7 ^: t) g4 V6 }4 [6 B1 r4 h
to get-global-proportion
, [5 z4 J" s/ g- D1 D6 v: `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* T, G, s: Z% O& q3 }
[set global-proportion 0]  _: y) F4 d; O" i/ }& k
[let i 0& m2 Q0 Y1 \: K. `) g
let sum-money 09 ?2 O) I( G/ I. H1 C% V% d& W
while[ i < people]
5 n9 K; S6 t8 f! p- C; H6 b+ `[2 U0 X! e! y9 _, ]
if( length (item i5 Z9 o/ `# f4 }4 F" R) k* Q
[trade-record-all] of customer) > 3 )
6 j( a& B2 F" I6 p
[
# F( X0 I0 I: H5 Bset sum-money (sum-money + item 2(item i [trade-record-all] of myself)): c4 {1 l  P7 P& ^9 m& p
]6 P7 G4 Y6 Q% U, e2 _5 o4 ]
]
- F! G% _  G. M! u' [1 ylet j 0
* R" w& H5 }6 q0 Wlet note 0
. D1 L& S" s% ?, h  V! Gwhile[ j < people]
  t9 W, Y7 Z0 F4 m9 h* n& O) H[' x5 L! F& Y: g" F* K9 I+ @, Y
if( length (item i% D2 \: R" H$ ?: t) j) t
[trade-record-all] of customer) > 3 )
+ t8 M/ W0 e/ \# ?& V) p& i
[
- ?4 q0 `7 j% x( ]" mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 t2 A- |2 Q- l6 |+ Q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" \- S% Y& ~0 \' a* @0 ^/ T
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' ~/ }. M3 m, I# J5 G4 ^2 I
]; w8 _( }" n1 i" }, t
]
, f# T% l0 n7 qset global-proportion note
5 D+ X8 L4 g3 m* h% Y]& |  S7 z1 Y( G3 c. n, g4 ^
end+ z+ o) F: B: b/ K6 `7 }' Q- {/ R2 w

( h2 k* V4 v) Ato do-trade
5 }$ c6 B0 B- o* Q4 @+ u2 l;;
这个过程实际上是给双方作出评价的过程/ b- ~$ n, o; V) Z0 f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 a0 Q" ^5 t& f) \0 U2 xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 j6 C5 q  p( F$ D6 X  r" T
set trade-record-current lput(timer) trade-record-current
& }) M% W0 k! W' W- s$ f;;
评价时间+ `- _; L4 Y6 H5 e( W
ask myself [
5 N. G# C9 v3 b; Lupdate-local-reputation; k# [$ G8 g8 p. Y
set trade-record-current lput([local-reputation] of myself) trade-record-current
! R$ J/ s* N/ M8 F. v]
8 W. `) A. F+ F: y5 I. Y' {# ?' n' Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& m! N1 [- n! P. g7 B
;;
将此次交易的记录加入到trade-record-one& K( m. O( n9 p1 ?4 d7 b# l# A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ {2 d- H( q( g1 Klet note (item 2 trade-record-current )
" A6 |, O3 q# @5 _8 y7 Fset trade-record-current- w( T0 N; `7 `1 {
(replace-item 2 trade-record-current (item 3 trade-record-current))

/ {: E4 P4 c' l+ ?3 _5 C$ ]set trade-record-current/ ~4 C5 B; z5 i7 b9 o' N
(replace-item 3 trade-record-current note)0 C5 f# D5 _  C3 ~4 p

' R- ]# k2 d6 @' r+ S

, w" F) N  q' kask customer [+ a8 K8 x1 ]1 Q* }
update-local-reputation
* f7 t6 X# {: U9 vset trade-record-current8 g, V6 x2 Q0 a) Q4 p4 s0 T
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' g, c* e: \  b/ [- s" W& U  n]$ W. Q4 Q, [$ t9 F
' ?9 L, {3 k8 Z7 v( W

0 A: g6 ~& h8 k( Y: dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' [. _$ w& a  ~% j
. M% G' {% l0 x" p( r
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 P, d0 C' E8 H- e( K5 N
;;
将此次交易的记录加入到customertrade-record-all) r9 n" d0 |! \# A, W/ G
end* N8 }7 M8 g. `* ^  m  Z' v9 o

; U  Y$ R4 A$ }: S  ?to update-local-reputation8 g" N* ^& ~9 w
set [trade-record-one-len] of myself length [trade-record-one] of myself* ?/ w/ v' w; k

5 s# \3 Y" o1 O9 X8 O* [# V8 [, W1 o7 S6 U/ V$ T" L6 z
;;if [trade-record-one-len] of myself > 3
* a$ q# I/ w9 b: s( B* X( n
update-neighbor-total
: v9 B) s" [6 _: b, }0 ^;;
更新邻居节点的数目,在此进行2 x  R- D% Y2 e4 l
let i 3
. z  G" O" z2 i; `) Zlet sum-time 0
3 h+ P0 f; P" ]3 q- R, P; Uwhile[i < [trade-record-one-len] of myself]0 E! Y4 F. a. F" v( w0 M6 p
[
/ _8 o* [5 F  d: w( p/ zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! R! t4 _  r7 S$ X7 ]" G* j8 ~+ d
set i- |% |9 f2 S' k
( i + 1)

; N4 c) b$ y0 B6 t7 \]/ n. v' b2 |2 w' N2 E
let j 3. F7 l4 [5 S' J6 ^  |
let sum-money 0' s) ]# {4 |! S4 w2 u9 o+ o1 t
while[j < [trade-record-one-len] of myself]3 V( e  B" F! O; T; t6 E
[
& F& l; t( U" f. c, N  Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
- a7 |1 n6 J# a1 _$ s4 \set j
1 n! S) B$ X  \, @  v/ c, d: j( j + 1)

7 F- ]* t5 X" z5 _]
; w; j; z* {9 _7 Q1 glet k 3  ~: \7 e. ^3 [  V
let power 0+ Z$ ^6 a9 q$ h* X) A
let local 07 q9 `& i7 g# r8 w( h! v
while [k <[trade-record-one-len] of myself]' i" s7 r3 `9 I
[& W7 `! i5 ^$ `6 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 u- i/ V7 M: x/ y) B
set k (k + 1)
0 F/ @: p) W/ T]$ U" Z/ h; G" O1 H3 H% E- ?6 Q; V
set [local-reputation] of myself (local)
" \2 z: p7 f! Q$ `2 Y3 X' \4 {$ jend+ W- V* N# U8 l1 i# M
* h" ~9 C; j  o* x6 ^# w
to update-neighbor-total- A7 l2 T8 t4 |* j1 t# q8 I( C
1 b$ Y# D1 j9 Y: ~9 x  A5 ]- F* j
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 r7 c1 X' j! ]% ~; k- F6 i" y: f. y8 D

2 w( \8 {# ]" Z9 @% Iend
! s8 K; ]* d9 E/ W( ~6 s& l9 L  K3 H
to update-credibility-ijl
, r6 O0 Y6 H' ]. I" V; ]9 \' K. J7 p
9 O& r, [2 ?) F2 S;;
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。
# {, u5 K9 H) \  J! z0 hlet l 0' h4 r. N; c1 u, k
while[ l < people ]
! @+ R5 R9 M# O9 e% ];;
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
2 V4 i& `9 E; _' z6 y7 |% g9 O3 k[6 F/ j$ E; G; p3 B6 |9 G  \6 P! A
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 O: B. u3 I2 A" @( n
if (trade-record-one-j-l-len > 3)
- \+ a0 r! x- e[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
! _/ c8 X! R" }) T* i7 Klet i 3, f! \4 r5 S$ d* `1 J+ @
let sum-time 0( E; v" z; c- ^/ ~# N
while[i < trade-record-one-len]
- o" J) S- Y0 A: G+ \: g[
) O5 r$ J+ h' ]& y8 K3 t& X: s1 [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 w7 U$ n$ x0 r2 E* e" G/ x2 Mset i4 i' ?& J& o* e1 Q% m0 x- m2 H
( i + 1)

/ t, J+ u/ z7 }9 J* {. u8 S]/ a+ l. c+ ~0 Y5 S7 j
let credibility-i-j-l 0) H( j4 A+ n& y7 Y! B
;;i
评价(jjl的评价)
) g6 t0 Q3 ], j9 flet j 3
+ P) u4 ?7 D+ q0 [5 ~* Elet k 4$ z. w( B' L3 f+ t
while[j < trade-record-one-len]+ R& J4 N2 R7 |6 I& y
[
3 K4 q/ O/ Z& swhile [((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
7 b. ?. b( W, G0 @* ]4 w- ^( Sset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
5 d( |5 l' r2 a9 C# S# n+ R" Cset j
/ }' U% Q; \, h. k( j + 1)
7 k. K! z: U- H* i$ b+ x4 b
]2 \! ?; z0 ?$ e
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 ))
8 f6 |1 R# G3 b3 A7 h- x  b9 |* O6 U. B4 F6 S
/ \) S* I% v6 ?: L- w# V
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ l# |$ p' k9 Z8 K
;;
及时更新il的评价质量的评价0 Z% o. i6 |0 ~
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 n% m5 E! J( u) H: G! i1 u+ r) _
set l (l + 1)
9 b5 G$ C% u9 z0 ^3 T( y]8 O0 t! a( b: @# c* O  k
end$ E/ q, O& Y9 h6 a) z+ h

9 W7 h3 C6 _: R4 L2 d% j4 T: eto update-credibility-list" I4 u9 o0 A4 s9 q1 e
let i 0
1 x) o9 S# O8 g( o$ \* fwhile[i < people]
$ w# z/ _8 s. z[
& V4 j9 R' I! }5 w, \3 V" b/ Qlet j 0
$ ~! @+ L/ z, u+ i; R6 l2 o/ q# zlet note 01 O) u! m3 X: ]# a0 O% C6 L- d$ ?
let k 0
! n! A9 c$ |: q5 H3 l1 ^  t;;
计作出过评价的邻居节点的数目
" I; g: ]+ W7 awhile[j < people]6 E& R$ _4 h, i. W! U9 A9 N% P: ~9 ]
[: n" _, n" i- S- [
if (item j( [credibility] of turtle (i + 1)) != -1)" G! A2 H, s) ^" w0 B; i  E, K
;;
判断是否给本turtle的评价质量做出过评价的节点
1 U# _1 [5 X+ }. }[set note (note + item j ([credibility]of turtle (i + 1)))
% V0 S2 d- G8 I9 ?2 A  q;;*(exp (-(people - 2)))/(people - 2))]
0 G( |3 ~: V( q& [
set k (k + 1)! ~  A8 I+ q* X+ |. A$ i
]: g  z& B+ W! [1 F$ S; l% ]
set j (j + 1)# ^3 F. c1 Z, U7 u# ^
]
! M5 ]% U: I9 Q4 X4 kset note (note *(exp (- (1 / k)))/ k)' z1 U0 \" Y+ r, Q' X6 O
set credibility-list (replace-item i credibility-list note)
* |+ ]1 G+ F" Wset i (i + 1)
" E: N9 J: G+ h0 |/ p]
1 O7 V! g/ a. Aend
0 B* R5 t' T6 w( C& q  ~4 r) |9 n/ {# O. |( G& G( A
to update-global-reputation-list' I( c8 b+ _/ u% |* p9 e
let j 0
8 x8 T! M8 M. Y- l- kwhile[j < people]
# k: F% Q- W* }  w0 S' c[
) Y0 t6 `% {7 J6 q9 N$ Nlet new 0
+ L3 O3 o. {: ~# w0 ~: R4 A) E. |;;
暂存新的一个全局声誉0 @/ t" c7 j3 J; n+ B" w
let i 0
' ^! s  E! ]2 Y- b5 @  S, I3 L' a6 flet sum-money 0
+ t8 H. }4 n% L5 @let credibility-money 0/ H6 p5 b5 j& m5 }& M& y  c7 O
while [i < people]
# P. |3 v0 r4 D: ?3 U[
( A' q5 g3 N5 x; y# S1 |6 Z' d+ pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! D6 {+ w  `) M" G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% D- V2 E1 m& F% y
set i (i + 1). {4 E. u& _3 I' ?. G: T5 z' B
]/ S! @1 B: B: {4 {. J
let k 02 i7 l0 a4 H; \' `& S5 i; N' r, V
let new1 05 D6 k& N( A: N1 r
while [k < people]' H6 m% e6 Z! U
[- _9 c' @+ A0 s# e
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)
, Z, o) L# K* K* x2 T: N/ O& B4 n! \set k (k + 1)
) @& q2 O* |3 @2 W]2 s( M0 M! w- ^# F% L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) P5 ^. w7 v1 `, u8 s3 ^7 @2 W3 G! _set global-reputation-list (replace-item j global-reputation-list new): B: }5 f1 s3 B
set j (j + 1)
) b) M9 J- x+ L& k]5 A3 m$ S$ k- }: w, y+ G
end  I0 J; P* W, p# Y+ g. k" ?# \
; A/ M$ ]9 s* j7 O

( N. v5 ], e: t' b+ u$ I- ~
/ b5 n: E7 }! R. H  e' A0 hto get-color
' l1 g& H6 S0 W) {4 O. t8 ]& Q. A+ _% h* l/ D
set color blue
3 ]% h" n; R& V& I4 F2 {# D4 g
end
  f: A& j" t& W* l( B
& A1 d5 o( G1 A4 N+ E; Q% Ato poll-class! E# U* B% [$ L+ e$ F; P0 p
end- Q% t0 y3 r9 M- D& C

" K& X, ~' @3 J( F6 m3 z5 q' T3 Uto setup-plot1) Q1 i2 {% h* ~. H# }" l
" H2 v2 w1 D9 ]5 A
set-current-plot "Trends-of-Local-reputation"

2 n. W+ _4 `" P7 J7 u; V; l+ j) q6 i. f8 |6 A; M( V% P
set-plot-x-range 0 xmax

1 j; D0 s5 X# S& ^/ p: K+ Z8 M
, U/ a7 h1 g$ J' j( U0 k$ ?set-plot-y-range 0.0 ymax
  C* w: ~6 }/ S, Q! P4 s7 _# S9 D
end( I; F5 r! A/ N9 C6 [- ^
8 @) }6 E, A: W4 d2 h9 p
to setup-plot2' G" O3 G9 Z( e9 k4 X! M$ x4 S

: A/ `& z6 ^( e+ V. Jset-current-plot "Trends-of-global-reputation"

) U/ o  Q: q  {# S( O
( Z* T! J7 q7 c0 ~% h; qset-plot-x-range 0 xmax

: K: Y9 ~( }1 d3 h
8 U6 B0 c4 S3 p( @1 C' s0 k; a6 ?5 ~set-plot-y-range 0.0 ymax
4 P+ v" x. s$ D) Q; u
end$ @# @) Y. ~0 X# H' Q* x+ j

/ S4 O+ s; B) Z" D+ p! L! Hto setup-plot3
% t# C2 z# ?9 u. z  W7 |. C7 l, L% R# ?0 ?
set-current-plot "Trends-of-credibility"

9 @1 H3 \, q; j0 T# A
9 G* y0 t7 U) M  ], p) |* V! R. Bset-plot-x-range 0 xmax
! o, F: M# U, |1 j7 K# Y0 i

( C9 P' ]4 K$ @: Fset-plot-y-range 0.0 ymax
) w. M" K+ i% ?" i
end
' d$ b- S* T- b) E
4 X& K" g& L% Y+ ?: zto do-plots9 B# h( H' |/ L
set-current-plot "Trends-of-Local-reputation"; k3 |) _6 Y9 ~3 p# i& g6 V
set-current-plot-pen "Honest service"
- E6 z( X& s" Z, z$ V8 ~end
5 f" B+ O- E! i: ^# p$ D$ k; A6 T* Q2 d! ~2 R' e" C
[ 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.
; i2 R% I& Z3 c. _$ Z% v. M( H2 e, G% J# }- T" v
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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