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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:; p: Z8 }# ~: I4 e3 A( _) _! f
to do-business , e+ d  j: f9 x! K1 m8 m
rt random 360& Q% h$ P) X  F7 p+ ~9 _
fd 1; e1 P( r* Y1 W. q5 g
ifelse(other turtles-here != nobody)[( N+ O8 c) i* B) K
   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.( d1 o) Q$ D3 z* z2 C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 z. Z5 b/ t/ Q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( c, F; A+ ?" f8 N3 `   set [trade-record-one-len] of self length [trade-record-one] of self, |* o. N+ U' K) y. `, q
   set trade-record-current( list (timer) (random money-upper-limit))
3 }3 n3 F6 t1 j
6 O# R; m# y/ q7 d8 x问题的提示如下:
% `4 }  y) D9 f1 ]1 L& X7 [0 m
8 a( Q) ^0 T2 F) k/ Herror while turtle 50 running OF in procedure DO-BUSINESS
# c. c( P/ B4 ]9 v. x& W7 U  called by procedure GO
8 D5 f0 O  g6 ^7 |* T: cOF expected input to be a turtle agentset or turtle but got NOBODY instead.- v0 `" z5 @5 Q0 O. k+ ]# s. B
(halted running of go)7 W' g( @) e3 v; j# Y# E; V0 X
2 _$ o1 U% W' v5 n. S
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~~9 u8 j* V1 b" O$ g1 e) S" h/ W4 {
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 U* n% W9 b. n" e7 ]7 k* D
globals[' Y$ a0 s0 p, f$ s8 F$ q
xmax6 S; c$ U& w. N; u) G) i  k
ymax6 b. y; E" z, E8 v& v/ O
global-reputation-list' }, u1 ~2 x* R% n8 J3 [
; U2 A5 v; M! l5 t( Q
;;
每一个turtle的全局声誉都存在此LIST+ q& I% e: \6 Z5 P0 ?4 k
credibility-list
) l( M# o1 k+ ];;
每一个turtle的评价可信度
( S' H* \# a' B3 ihonest-service
/ l' q" W' s1 V, b0 \unhonest-service
% j1 t! I, _2 A  Qoscillation
( r" d& e. [2 S# ^$ U; hrand-dynamic
5 B& s" _1 d& N) g& i]
: H. z4 u# x  E( H7 l! Q( f- k+ j4 E" O
turtles-own[5 l  Y/ Z# v- r; Y' p8 c3 m
trade-record-all
6 |; Q1 M, A7 m( c+ ?;;a list of lists,
trade-record-one组成
5 m5 ]* C( b" ?8 Y0 e3 Mtrade-record-one7 H. n  q8 n. P: H" l
;;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 [! a( S' I' [# T' z1 }1 n7 L
! t& U' ~; ]4 N3 v' n7 y
;;[
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]], V* c1 w( X! K
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]
2 |' u  Y& W3 _; q; f8 x2 e+ Tcredibility-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, i& }  ]/ |# }! z" y  x
neighbor-total
! g" o$ Y1 I, b% w" {9 C3 s;;
记录该turtle的邻居节点的数目2 g7 R' \9 n* Q) W5 l0 M
trade-time8 t) y' }& {8 \2 U( r
;;
当前发生交易的turtle的交易时间8 r% I7 s  y$ O) f  z; Q
appraise-give
1 d- H: P# {! p4 n' g( M;;
当前发生交易时给出的评价  W9 l& e5 ?4 K
appraise-receive
( i: e: I8 v5 l  Z; r;;
当前发生交易时收到的评价
4 @- K1 n# E/ b' Xappraise-time
$ A5 M* d( ?" E4 _;;
当前发生交易时的评价时间
2 v% _* M6 ~! m* Z! M' Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" k7 v( h; o: K0 R9 qtrade-times-total
# d) Y3 ~! ~. h1 G% W- I;;
与当前turtle的交易总次数
" W9 s+ ]: F$ Q; f7 d/ B1 ctrade-money-total
* Q- [7 o) U  `6 A;;
与当前turtle的交易总金额" |- U% T6 L5 G: p# k. [1 G, d
local-reputation
6 V3 ]; s' l& |% T) r% Yglobal-reputation' E% o! |, P& n" L
credibility3 t3 @/ ]* V6 t) y" I- o, e
;;
评价可信度,每次交易后都需要更新
% }9 L2 Y# k& o5 Q  e  Q: q9 hcredibility-all5 Q+ w1 W& h( F& j: }) ^
;;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
9 {7 ]( s5 C- p4 ^, a% O  e2 L
8 Z3 N% _* Q7 k6 p3 X7 ^. A;;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
0 Y5 `7 l5 o: ]; K, ^4 n7 e9 ~credibility-one; H2 {( Z1 C$ J! ~/ u( H1 J1 g& s6 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people7 Q6 {/ T. N$ Q) Z( i+ T" Y
global-proportion2 G% u* p' R: ~, i5 H' B
customer
& d2 E9 }% n; e; f2 W* \8 Gcustomer-no9 G4 L" h. R0 k) \+ E+ o' _- s
trust-ok
4 R; `  h# ~/ x" ^trade-record-one-len;;trade-record-one的长度
# ~2 s% Y, E" g; R+ ?7 ^4 m]
9 {0 P  Y. q! W# X3 R1 V8 }  v% o+ E- i6 n1 {, j$ f. }
;;setup procedure8 |, Z3 x4 ]  J3 w7 n9 T
( M2 z" f- \8 p. ]$ G6 U3 r
to setup
  ?/ W0 P% x+ U+ w( @) w$ \+ `( k0 b4 [
ca

; r) j& I! i$ F1 v: J2 U. K8 @+ Q+ X9 `
initialize-settings

9 C; o* i0 E: |, w9 d, Z/ j) i; u
0 i0 j9 H" @3 |4 q4 |5 c5 ecrt people [setup-turtles]
& E; E3 J& ]/ |- {8 [

) L" u7 B+ d3 m8 o+ y+ mreset-timer

4 M, A/ O$ j! }8 e' C5 I! b4 [0 D7 G$ J( j/ t: h
poll-class

3 y$ c' k7 ^$ \+ F0 }* ^1 \- j& `9 a( M) [1 H1 m
setup-plots

' q4 B5 \0 B* z% |3 m% S& Z! N8 F% |+ n. z9 Z
do-plots

  e) y2 s* S7 o4 u* |end
9 s  K: D5 t, T( w7 r$ N3 G( o" `1 n
to initialize-settings4 b; Z0 O- v  p5 e9 b% e

; ^3 k) I& N* e" T, Iset global-reputation-list []
$ p. C, A) x  o9 f
1 _" g8 r0 ~2 W. R  l9 _, r$ u
set credibility-list n-values people [0.5]

$ K/ c% z; _% _$ c% `" D+ L# b6 [9 L3 a
set honest-service 0

6 M& D/ _7 _5 k. S. q4 l% ?
# M! o4 Y# U/ k% |/ v; yset unhonest-service 0

5 Y2 j; J: k7 B' d% b% }8 {: x# p4 W" r% m# `& G$ G7 o2 \
set oscillation 0
0 v9 }! N' p" s
: G1 a5 L- K2 e. d. z8 T! H
set rand-dynamic 0
$ y6 ^0 K8 r4 I" _3 n
end
; j/ |' v  Z+ w0 F4 F2 u8 d' @! C; b& O; w- F0 U
to setup-turtles
- H) i4 h" Z/ }4 v1 Xset shape "person"
: u; U2 W; Z4 R4 v" y, u) y0 zsetxy random-xcor random-ycor' ~, S$ H: m' w" F; p9 b
set trade-record-one []
3 |/ K; L  S) n/ O9 N
& y# B8 M& P3 @, ?; c; y
set trade-record-all n-values people [(list (? + 1) 0 0)] / Y8 }( `) j. j; V; h: y, @' y
4 f& s1 P+ B) W' x! M4 |+ D
set trade-record-current [], H! X0 P. ?( o2 a4 e) O
set credibility-receive []1 r3 O  X; F5 {- {2 A
set local-reputation 0.5
2 s+ w( t, X1 p/ Uset neighbor-total 0, b& \& @- B5 R2 ^
set trade-times-total 0
  E- |0 ]! v" @7 V. L" S, X7 ]+ ~. hset trade-money-total 0
+ @' P2 n9 R4 R2 b0 n9 B9 y3 Rset customer nobody! f4 E2 R1 i* v' }# e$ w5 k0 `
set credibility-all n-values people [creat-credibility]( q8 k3 `( L1 [5 }
set credibility n-values people [-1]- X8 N+ f+ `7 M4 d/ G" u
get-color) [  f/ Z2 [$ l+ ~
5 C5 y- Y2 p7 L
end
- X, l1 y* B) ]9 t1 N$ m- K9 u1 l$ U. D6 |' t. A+ E% ]
to-report creat-credibility: T0 E, M! u2 t6 l, C+ K: C
report n-values people [0.5]
  \8 J7 l" Q$ j/ `& eend  \: r( |# B, N6 n

  B3 F2 c2 z# ito setup-plots
) S* U+ ]' L. q! X3 s; a" F0 y1 {+ Q
set xmax 30
: \) f2 T" z) Y

5 w) G4 x. t% t, b& n/ [& d2 Fset ymax 1.0
- z5 y: |! H0 p) i

% u8 U  ^+ k3 `% q: i9 z; }( t& Sclear-all-plots
, b+ U2 D- Q( U# E) @& n. I: N  m

+ R4 f+ E" m/ Z; Q$ I5 e7 Lsetup-plot1
$ Q( c' O# X( Z2 Q, h6 B+ \

  r% A7 O/ [9 c  H5 bsetup-plot2

( O4 m& I! n. X' h, f1 J( L$ T4 O7 D# C- @- K; G
setup-plot3
9 M/ M9 k3 A4 k& t+ d, g- }
end
% ]5 x0 P$ w4 Q7 y/ H/ g5 @
/ |2 Q2 h3 y( l# {0 \5 n) b! V5 c& y;;run time procedures
  h% S- F+ Z% X8 m* B
! F8 Q  d' l3 s6 r( x5 Z+ z% Mto go
) Y1 I/ U0 ^5 r3 S2 R( c/ o& K8 _2 A( ~4 J- t7 t- O; m6 s
ask turtles [do-business]

  {6 i& D; Y; }2 U- |end! e- d' B4 ^( `$ B' M- F5 G) s
, D' A& r2 [. p% }, w
to do-business
/ g# T) Z0 N' B
+ O0 e) y" w' m/ S- g
& z" Q$ q9 e; y! c
rt random 360

" h8 Y, L& w* }1 T- ^: {+ y! b# e- t3 N" T6 _
fd 1

- F7 [8 K+ O9 j( O1 a6 A. t( `* }* x/ o7 y% T; i
ifelse(other turtles-here != nobody)[
' l# n; N. X1 S  W
/ b% r% [8 O( L6 O9 ~4 I
set customer one-of other turtles-here

7 O1 _& e- q  }. R( W2 h2 S8 f7 c* v" R4 x: E' D
;; set [customer] of customer myself
" ?( `* {' y7 J" v% B8 _6 F/ \

5 r% z4 `6 @( P& q' c# Tset [trade-record-one] of self item (([who] of customer) - 1): h/ e& k* L6 N) I
[trade-record-all]of self
/ z7 D6 |( Q  Y! l  s' z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: e1 f: t% H) k6 q4 N4 U

0 U' y5 }0 y3 i& r' {0 H( y7 A7 Tset [trade-record-one] of customer item (([who] of self) - 1)
6 d$ Y* C$ x# g/ t' Y/ k% l; F: E; H[trade-record-all]of customer
# s1 b  ^, L. \+ A0 K  u

, N+ b& x6 G6 g( ]  uset [trade-record-one-len] of self length [trade-record-one] of self

. D8 k1 J1 K! s% H: z* k( q8 T# d! c: B& `5 m1 L- q7 l& [# q' s
set trade-record-current( list (timer) (random money-upper-limit))

& F) c4 Q; w2 U6 L! \
2 }8 r; H1 n, s0 \( s- @ask self [do-trust]7 t% G2 \2 }9 k4 S& W0 }* K5 Y
;;
先求ij的信任度4 x$ v! L; _2 G( f* M, U. b

( }5 Q$ A) V% C4 hif ([trust-ok] of self)
+ h5 C9 G+ U" q* g3 G;;
根据ij的信任度来决定是否与j进行交易[
, i/ S' ~, F6 o! ~ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  t  x1 _8 ]; I
: |9 U; w1 o; X" u6 @- O: M[
8 X( I! a2 O2 q; u0 Y' Q9 j

* r3 f- Y* b8 s% T6 `( gdo-trade
* l% [! x- L1 @$ y, h

6 h6 D9 s" Z9 Q5 u, }9 Lupdate-credibility-ijl

( }+ Z# u1 w& x/ T8 S4 L" ?1 y6 D# K) D0 G3 V
update-credibility-list9 }* ?, M' Z$ z& |5 l7 e/ j

% B( d4 k% K  X. E8 z# N0 C/ m1 B' r
update-global-reputation-list

! G! y* o, ^" S* C8 z5 l4 d
# |* z$ b( t2 bpoll-class
  R- m* H+ }# |: y

) K+ v7 x" q  D" A2 b4 v, x7 W5 kget-color

5 z0 d( S2 Q$ R
" Y& X$ }3 @+ |$ N]]- b; d" M& j8 y  J4 x! G8 }) i
. b: o, C2 H/ h7 V% h' ?4 U* w
;;
如果所得的信任度满足条件,则进行交易% n$ w  E& K4 G" I7 Q9 ~8 h5 n5 G

, C5 y- ^. C! d$ G% w, W[

6 a+ G1 D- u. ]* R% Z3 _
5 }. F1 H: L( s" f4 y' Yrt random 360
4 o2 P; S1 o- _

% L% G( m* a0 S" h" N0 `fd 1

0 i' `- I, s$ \0 T9 c+ f6 E- w% q" z7 \: T1 F# X
]
; {  c6 O, V+ G( J; s
# ?% b' I7 y* E, m1 |4 L
end
. d9 e1 k8 q- t$ J8 b" S

" Y# A9 v7 X4 n) tto do-trust
7 Y3 L. b, H" T, n( ?set trust-ok False6 A+ j+ C& ^/ g3 R. e

# V# l8 M; L0 C+ v- g

" D/ I# M( i  f9 A0 ?  D/ olet max-trade-times 00 M/ o' e# Q/ F% a/ [
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ X. K7 f) V! n& K: ~0 v& tlet max-trade-money 0
7 Q* G+ ?* o! f9 J) s( c* mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( g$ Q; w; E4 Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# `3 I1 H* l5 t1 u
/ X4 z9 F, u% @# l( e
7 I6 N; ^7 n0 ^1 O3 b9 L* Q! o
get-global-proportion
' b. p$ P2 k; ilet trust-value9 ]9 I) v1 d. z: h$ Z1 k( @; Y
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)
3 v1 U! E9 B0 A2 l- `2 O
if(trust-value > trade-trust-value)/ X$ m; u8 `2 T/ a0 t
[set trust-ok true]0 r4 g/ ^7 }6 q. z( p7 E6 q$ C8 o- X
end6 Q2 E& W$ Z1 t

# s/ E; a, N0 J" l/ E" _# kto get-global-proportion
2 v; i% l- v6 X' `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* S# M9 e8 \1 p
[set global-proportion 0]8 w0 r" g: z, R( r: J
[let i 0
- n! A, M* M/ _! y# hlet sum-money 0' V& d% b: M% j
while[ i < people]
0 D+ ^5 g& C, R. s+ j* a; ?[/ v3 o. b- s/ R( ]
if( length (item i$ ~+ J' @+ a* j7 u
[trade-record-all] of customer) > 3 )

5 G. Y3 a! l" n' T[& R/ @& m: L4 }8 x9 D4 U; G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
/ R5 j8 s6 I! r) g]. b; ?4 `- A' h' f# [" L
]. Y& z' D5 r* ?. F) _1 C
let j 0
! ~" B0 V6 Y. d% [let note 0& W5 J/ x" q5 V2 j' ?
while[ j < people]
" x' K  V+ S7 T6 j% D[9 a3 b# A  K2 g, G7 `4 g, l8 M0 s
if( length (item i3 ^- D" k6 \7 Y* z6 r  I
[trade-record-all] of customer) > 3 )
. c3 T+ ~+ U/ Z! g( W' y: Q
[0 s4 m; v& H- S5 F9 X( F6 m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 ?4 q3 j+ [$ x2 V6 J[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. D* k4 \' t; Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  P* e9 U; ^+ o6 S0 Z" |6 X4 Y
]3 n+ L- H5 a# M; B5 C
]
- i/ \6 S& }4 f# ]) M9 O1 Nset global-proportion note" }  j: K, f- P, D) I0 F7 f8 T
]" d5 @6 W% _6 O. \" d
end
4 |3 U3 ]- M6 W/ C0 u- M% F6 n! _! _6 g8 m2 O" j  L
to do-trade. O4 g* M, R( m/ J
;;
这个过程实际上是给双方作出评价的过程/ ~5 |$ I0 U1 m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. n- _2 z6 s# y# @" Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) [( `9 h4 S9 o/ f: v2 n  r. W
set trade-record-current lput(timer) trade-record-current
# v) Y6 y. s9 U  X2 D4 j;;
评价时间
& @" c# G. K5 I& Mask myself [
9 K. Q! @; Q+ z- m0 ?; e: o+ rupdate-local-reputation
& W4 G) F& B: F6 D  J3 {set trade-record-current lput([local-reputation] of myself) trade-record-current9 E4 u2 M0 |* P  [' W# G: a
]
& z7 g0 o+ k5 B% u5 nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) L0 M7 N6 @1 M% q;;
将此次交易的记录加入到trade-record-one
+ v% P5 [2 X6 A1 L+ r1 R" wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 N1 E8 Z. l. J! m+ r4 H  t& i6 alet note (item 2 trade-record-current )
% w* K, Z. w* A- ]- w: y# ?' gset trade-record-current. T/ l, D( D0 L3 C* _
(replace-item 2 trade-record-current (item 3 trade-record-current))
( H4 L5 A$ ^- p; a
set trade-record-current
' Y* O! W2 `2 P& {- ?% f(replace-item 3 trade-record-current note); t$ u1 i* G/ \+ N  ^
, S7 y, O. S9 D# u

4 l/ U2 N& l8 w* G) lask customer [3 h. Q6 m, {" {
update-local-reputation4 K& ]" L/ ~  z4 R0 E
set trade-record-current
0 p: g5 g, W& I3 q8 b( P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, P) P! C( [& X
]9 }2 {  O7 e( Z1 _: G& c- S8 z

8 W/ Z8 V: e; b

( T, s* T" e: [" B3 K9 c: Aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) g) }! q! X3 |- ^1 k8 O  U: C+ S
* R9 s: [+ `5 j2 Z; L
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- Z9 o- ~4 \; Y5 y, q, |;;
将此次交易的记录加入到customertrade-record-all
5 B( p5 w0 C2 q  C+ b* _: `$ qend
1 |. s: E3 X9 G
( W) i, r7 J( F0 w1 vto update-local-reputation# z4 z; R' E1 `* y5 l: |' R
set [trade-record-one-len] of myself length [trade-record-one] of myself
  K" c8 J& Z8 N1 `' u  c
6 M7 R, g$ ?. h
7 U2 ~  X# |: J3 U  X;;if [trade-record-one-len] of myself > 3

7 v1 x2 `# w. z3 q3 supdate-neighbor-total2 S7 W% o. i. [* w
;;
更新邻居节点的数目,在此进行
) D5 b% d6 r4 F7 ]8 k7 m! X! Z  slet i 3
0 i# H+ h5 R$ Ylet sum-time 0
. O) |+ {2 ^0 F; rwhile[i < [trade-record-one-len] of myself]: N# ~! H+ b+ T% ?; ~
[
3 B# y' X, S. E6 z  E7 y7 k6 vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )& I* T  M4 c" m" v; i
set i
; o  T* \! J4 ?! [# U* b2 I3 a) P( B( i + 1)
" ?6 q' ?* r; F3 I
]
9 d+ O0 y; ~4 Z5 z) S- w0 ilet j 30 @7 ^8 d, P4 N8 B
let sum-money 0( C, D6 e4 b5 a
while[j < [trade-record-one-len] of myself]
* A6 n* v8 k) ?" }* b1 X[7 ~: R- s- I3 R* w  R" |
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)! w' o3 N5 a( j/ z: }; \( [
set j
! \' X: \' ]2 ]9 u( H, D* [0 l  Y( j + 1)
% ~& \# Z1 g1 ]
]/ m% c: _3 B5 b( j
let k 3
" l3 |% d% Q( elet power 0+ C3 U$ J& E) \1 i0 T( a  D
let local 0
% ~% n' U1 _! V. o( uwhile [k <[trade-record-one-len] of myself]6 a( j* J0 H: T& [1 u( [* W2 D: d
[5 }$ x5 u  M: ]3 x5 W) V
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)
* Q/ H3 b) H, w# S9 Oset k (k + 1)/ V  I1 K: B+ g- V# a  ?$ b+ R
]( L9 b0 \; j8 z; b0 ?( y1 L5 B
set [local-reputation] of myself (local)
* Y1 J) O1 U# K* r# W" O4 bend& W# w0 b( z. V6 L; _* X

3 S# q( U! o3 ]  L) zto update-neighbor-total5 x- [6 y: e/ R9 L3 B
3 K1 G' D0 y1 @1 Q% d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 _: l% X2 v5 E+ T$ N
- m6 e$ u$ E1 m9 X* a8 N

, O9 f5 \0 r5 k# A; Pend& U5 o1 `4 p6 A# j: e1 D) U

8 [( I% d8 W$ {7 e! Sto update-credibility-ijl
3 p, C+ {4 }+ S$ X
5 N. ?( z' t8 ]' T;;
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 F( _$ e3 S+ F$ X1 nlet l 0/ I+ {$ e% z4 f$ |% v" q$ v2 W
while[ l < people ]
4 B$ P8 u: N# {' @0 E' G: ~; c;;
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5 C5 G6 |* H5 X) F0 W  R* S
[  _& Z" B& v+ Q6 P, @' ]% \3 _
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 p% N% G- g% @" x# wif (trade-record-one-j-l-len > 3)# U% J, B  U) N& w1 D  y/ ~
[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
8 ?7 t/ b4 o0 u2 Hlet i 3, n5 V# g* O& ]6 u
let sum-time 0' b% V( x% h+ T
while[i < trade-record-one-len]/ k" X  `+ @/ w% _- {. R
[
# @6 a3 R8 D* ?( F$ \set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* N. H' g# e' @3 W! D% mset i
6 B$ R* d+ v2 H& |( i + 1)

' i& f! z/ [! ~]0 R6 M9 k% L3 n1 Q
let credibility-i-j-l 0
/ x! h3 |- b+ Q6 I) F( ]) d, w" p;;i
评价(jjl的评价)
4 x9 K. d  A2 rlet j 3
  M. g) ?1 ^# [let k 4/ G- c* q$ P( p; O. M
while[j < trade-record-one-len]$ T, u* |3 I$ r
[1 L( L5 d0 v1 m) S/ y
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉. `0 }0 ]# q0 ^+ P
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)
- Q1 f5 }9 @/ _! ^set j
3 l/ M: d) p( P0 C. B7 f# i( j + 1)

7 R. I7 l6 t+ l  c, p2 n# d]
/ M4 k) L2 g5 g/ {9 F6 ]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 )). E5 X4 G. g6 E9 v5 B0 G

+ J* T; x( r: Q" X
: \) P0 ^, M2 a2 C" }: Q1 x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: O% k$ z) q* p2 K2 r;;
及时更新il的评价质量的评价
7 _# s5 u0 i/ G9 n% H% _5 {1 W) fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 n3 t) o( Y7 B
set l (l + 1)
% R$ ^/ E2 \7 {]
. G; d  s4 w& b* n! e2 [# b# Hend8 \" X  C3 C1 |& t4 V% A/ P
( _7 E, v* M! h. \# e
to update-credibility-list. Q/ T# ?* W& Y# x8 x
let i 02 s$ @: }, Y  R* }1 l, K4 q
while[i < people]5 R* ~! o# j% |7 h2 I6 t
[
, Q2 l4 @/ @* r5 u" ?2 V  s! i/ flet j 0
# z" a# W5 e1 A" T' X. Plet note 0- A& M1 F  O" v! |3 c; y
let k 0$ J- l: n3 f+ p$ a, H
;;
计作出过评价的邻居节点的数目! j; b& }8 x5 V1 I! ^- y" ^( N
while[j < people]5 O7 o* \3 K& C- y4 B( c, X9 z
[+ Y# c2 W- j! t, d1 w" o! a
if (item j( [credibility] of turtle (i + 1)) != -1)# ]' P/ t$ i$ y) K( ]
;;
判断是否给本turtle的评价质量做出过评价的节点
( c; ?( R. [6 W2 l! _3 B[set note (note + item j ([credibility]of turtle (i + 1)))
' M9 d% h9 K/ F" m& M6 H# X;;*(exp (-(people - 2)))/(people - 2))]

# ?( R: k3 y8 k% s1 m; [& s5 D. Rset k (k + 1)
: S! b7 f7 t3 c( u" q]
: [' c1 o) [* m% `( s& pset j (j + 1)! X& b9 I+ i6 K+ t  b' ~" I
]2 ]  G" H9 M  p: m0 n0 v
set note (note *(exp (- (1 / k)))/ k)
- w! ]" g# |0 L1 W" ~set credibility-list (replace-item i credibility-list note)- H1 ^9 h' i' ^' n
set i (i + 1)( b! Q! o; v6 H  [; S
]
$ V+ L1 g. P; D6 Y8 C6 ?) ^+ C- bend* I# A, o$ d# w  }  I/ w

/ U* d7 F5 ~0 d1 j6 x% k  Qto update-global-reputation-list" c0 s* s  e4 ^5 n" `( o  j! K
let j 0
5 T6 p( N) O$ ^* Fwhile[j < people]$ F' l7 v7 C- i
[) T# X- S/ J- l% Q  b2 L* X! u5 z
let new 0) I  Z/ z8 ?2 p$ V9 g/ Z
;;
暂存新的一个全局声誉: q7 f' @0 k5 g; n% T, A, v6 A1 h( J
let i 0; C/ N* n. R, s' r6 x; e; n
let sum-money 0. i0 u  r. q" E/ O
let credibility-money 0
% E; o8 j5 Z$ Y* Z, iwhile [i < people]
; B! }, J+ V, a1 R[
4 B8 a3 z. _( O) G8 Lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- D, d. ?" r5 z9 P  D  ^4 O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& z7 ^5 s; |: _! }; W( `1 O4 h# [/ H8 wset i (i + 1)
# k* b5 e7 S( o* ]: i: P]3 R4 F8 @* C) M  F3 o( i9 |
let k 0
8 `* A) L0 l: }8 ]0 P% alet new1 0# z6 H) h2 M' h
while [k < people]
4 r* ^! c  a' I[8 i0 u/ x8 T3 ~+ l# l
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)0 [; X1 i6 f7 i
set k (k + 1)/ S/ T0 Z9 M: b+ Z, j" ^
]2 U* y: z& N: ]- U- M; K9 U
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 q  h# M" d& S  G. I) }" e
set global-reputation-list (replace-item j global-reputation-list new)5 R& m0 {' O) T
set j (j + 1)( V  v; L6 k7 V0 l% [: J
]
: z4 V+ a. [6 T& xend
/ V9 s! o, N; P( ]( V
6 R& |! ^3 N( G
8 ]. j5 k( j# y4 v* f
7 i4 Z% y+ I9 R: ]0 dto get-color5 ?: P5 e& r& D$ d; D
) {. ~- ?' T4 l/ b+ Y2 D0 ?
set color blue
& o" s" x* _/ j. _) \/ F& i3 L
end
6 t  m. H$ j4 i* y* b0 c" y" i+ v# C3 a7 E
to poll-class
4 b* N$ A) n+ x) f, A* [end
. x6 X$ z3 }0 m$ p. q2 a; A+ h) ^( K, Y8 r( t( E. A, R
to setup-plot1+ T3 ]  x- N6 y: Y! r. Q

; @  K4 x1 z2 O- ~: fset-current-plot "Trends-of-Local-reputation"
, T1 n+ N9 v  ]) L: m1 Z3 a0 q; M

6 y4 \0 _( ~: Cset-plot-x-range 0 xmax

9 A  T  c  r! Z6 _
. u+ p0 A$ i6 w6 ^: eset-plot-y-range 0.0 ymax
& ]2 `+ y: N/ A2 K: G5 o" c2 E! A
end1 `8 _8 F8 W( Z$ ^! Y- ]
  Z9 i0 L, n9 X2 W' L% Z
to setup-plot2$ b' l9 T6 ?/ R8 [0 Q6 k
# n3 e; c) C. A  V" s# n; _0 c
set-current-plot "Trends-of-global-reputation"

: M( n; W7 C5 V) L1 Z, {+ u
: T( P6 ]+ T6 n- o" B* ^set-plot-x-range 0 xmax

! f5 v- L9 t/ I' R5 H$ R) F5 r' ~+ \9 L$ N, {1 O* j  h) ]
set-plot-y-range 0.0 ymax

# r; l/ B- q% N& M& C6 c$ _end$ S! i: k- B/ ]8 B' x& i2 }1 O6 O

/ m0 x- |% B$ y* ]( ]# f% [to setup-plot37 Y2 D5 X0 a% @! r0 y

; J# i. J' Z  k3 i( B8 _set-current-plot "Trends-of-credibility"
# @1 h; v* y7 M; [7 a
4 g0 u  n) |0 C! q% n6 ]
set-plot-x-range 0 xmax

, s7 K1 Q# n5 j% M6 f; _
6 b7 A7 ~3 M2 C" g4 lset-plot-y-range 0.0 ymax

$ d- J; k& l- V" w5 Z* B: |! n) T' nend
4 h: H  l) i' \6 T2 `4 O) G1 y. N6 T8 S. J" {/ U7 D- i& i6 s9 B) F2 {
to do-plots
$ y  @$ l$ j& m& y7 u4 Y4 D. x+ Eset-current-plot "Trends-of-Local-reputation"( ^) Y9 w5 Q- l  ?; k3 l. E
set-current-plot-pen "Honest service"
/ W" o) h% W" Y/ oend# T- ]) ]) @7 f0 r& K1 F

% B& c0 s  y9 b$ b- d  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.
' R3 E6 n, z" s7 d: e
  y7 b" [8 P( T- [! |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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