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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:
8 u. t% ?& A  u# yto do-business ) a$ p6 U2 B* t& }" }5 ]
rt random 360
$ n# t$ d5 w2 |$ C% l0 C fd 1
; l! a2 N. e+ S ifelse(other turtles-here != nobody)[7 `( E0 b5 |# {6 g
   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.
$ {* K/ H1 C" k6 G. p! C5 r, b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , R$ y' N) z5 p
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 q7 [: B% @1 b# w/ i3 c) I   set [trade-record-one-len] of self length [trade-record-one] of self
$ X+ e7 I* Z% |4 ?   set trade-record-current( list (timer) (random money-upper-limit)): _- s4 T  B# `2 h3 O  s) M

1 q: R# s3 \5 |0 \0 O问题的提示如下:3 h% W% C+ l% b$ a
9 \" ~0 v  j. Q& l# `5 x
error while turtle 50 running OF in procedure DO-BUSINESS
' ~* b. q& ]2 a  called by procedure GO3 N4 U6 @& d2 }3 x% n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' R5 U' w9 i/ _6 n* ]
(halted running of go)
  l/ W5 |6 D7 [
6 ~1 m4 t! b" B0 z: 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~~
9 t/ \- W# U4 a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* l& S! m- \0 w! ^& C
globals[
9 t- ~1 l4 v( h7 t; j! |xmax
8 S& q9 Q3 l6 m' y  M% Z  y: _ymax. N2 h. M. \6 Z
global-reputation-list4 [& p" x: s1 P: f( g' G6 j

1 U: ~3 [# X9 B0 l! Z;;
每一个turtle的全局声誉都存在此LIST8 n; r% d$ k& S, U# s, O& z* |
credibility-list
( c* C, N$ c8 C;;
每一个turtle的评价可信度
3 l) x* O5 n' w; a/ T/ ihonest-service: g4 R, ]8 Z+ {+ j' h2 I
unhonest-service
# {7 T; t) g( I1 Y9 Boscillation
9 U- M+ U/ X% t9 Erand-dynamic# P* `5 A" J- F# R  j
]- ^% k1 @, L3 a' S. d
# x8 C. A: u/ a* u- k
turtles-own[1 p4 F9 s0 D0 [' e! X
trade-record-all1 X4 E6 ~8 b, x( o; U
;;a list of lists,
trade-record-one组成! [6 o: `' g4 q$ O' F" o
trade-record-one
8 p2 Y4 o6 X5 r4 j+ s) u1 x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; L/ b) b4 R" p. n; P: s. T0 p4 n0 [9 S( `
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
8 ~0 ^6 J2 V4 g- {4 htrade-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]& a" l! Y0 E, M/ _( c' i8 X+ _
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
9 G9 u& }, i& P% `neighbor-total
+ ^6 ^  X& Y8 [0 j;;
记录该turtle的邻居节点的数目3 U, d. N9 M" P: Y6 }( V3 E& N
trade-time
( |7 o6 H" `: H- a;;
当前发生交易的turtle的交易时间
* J+ E8 V8 G$ f: d; J$ z2 L0 _appraise-give7 j; V/ i- f! g4 ?& e" [8 H
;;
当前发生交易时给出的评价
9 d  G- S6 ?" `/ S" lappraise-receive
% I0 }3 }3 @, u* Q2 t;;
当前发生交易时收到的评价
7 v& f% P  M. w: _6 Vappraise-time
5 A) H3 N6 |9 Z$ A. S/ e: m;;
当前发生交易时的评价时间
0 F! w/ M9 S4 Z+ Z5 j2 f6 klocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 [  o! f9 \4 n" @. g7 rtrade-times-total7 a6 G. v4 o4 v: q9 C; \
;;
与当前turtle的交易总次数
0 M  q+ a* ?8 ~' f1 D" |9 H! etrade-money-total& |. u' a. X$ e$ e- u0 E' G3 f- ]
;;
与当前turtle的交易总金额
  m* G4 X% V* I+ J7 b! Ilocal-reputation  ?$ l/ ]' W3 w$ K' W  ]& t* R
global-reputation
" C" E7 @; J. L2 b+ acredibility
' L$ X  E4 V% L) x( ^) y;;
评价可信度,每次交易后都需要更新
' U- M5 I! T6 A: q& Ocredibility-all/ e- l7 l2 {" l! A% @
;;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
  p4 Y# f7 O$ y  T9 _' r8 R) O9 m! R7 b- C" y
;;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
. M1 Z" j# _, |9 P; \2 Ccredibility-one
% y5 s' f+ K8 \: U5 C, o, j;;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
7 [6 @5 b# q6 c; D0 `/ oglobal-proportion% N  R1 D2 e4 `  n- d
customer
5 d2 T& w) }& g9 Bcustomer-no: h' l" z# I+ d2 w$ r
trust-ok8 N9 L2 d3 L- c6 U$ n' Q3 ^  F  A
trade-record-one-len;;trade-record-one的长度
* ?: w" @- r& k$ E& j0 b  E; ^]
% P" N: Y* z5 C& j8 ^, H1 [2 j: |6 j8 P6 a* X6 I
;;setup procedure+ X0 @: e; R- R% |& \- k

3 c% j1 }0 g  u4 W$ ^to setup
! K: L; W' }8 `% O: A
& i4 j% l; M# L3 j  \, L! w/ s: V, Bca
/ u$ T# r: O6 N

( q, c" n  _- ?( [& Oinitialize-settings
8 s' Z* Y4 `8 P; A
7 a7 y# o5 j, Y5 r; u9 i
crt people [setup-turtles]

# B2 U; l& r4 g
% Z5 e4 a/ V+ Qreset-timer

, F& o, @/ J6 l+ s: D! S0 h. R! F+ a# z5 W! h
poll-class

; R5 q4 ?6 O& r7 h
8 o/ P0 Q: B, ^( j/ F/ J* y- A$ qsetup-plots
( m3 `0 u. |7 ^- D  {( G

9 Y. w1 `& `9 v6 m1 Wdo-plots
3 Y1 E; }1 A% f
end: g  q6 Z# N- G' V/ f! @
" p' r% A# W1 x" a8 {
to initialize-settings
4 c! [9 a$ n( K; I8 s: l5 j6 n; z% @0 R& X( p2 H+ G+ A6 P
set global-reputation-list []

( A5 [6 g6 H- |! m+ o, v  S6 J
) G6 @+ @1 {7 d- H0 R+ O& `set credibility-list n-values people [0.5]

! d. x* X3 c9 \- }* F8 v) ?  R7 t, Q7 Q- ~, H7 w. V6 ^1 s
set honest-service 0

% l4 D+ z0 `% w0 G; ?+ u
) V8 w+ }  X2 K; yset unhonest-service 0
5 ?* x7 A, Y; G1 T+ o4 N, |8 U8 [7 z

# ]8 l& r* v4 Y" D- e' Oset oscillation 0
5 A8 j8 V% x1 I! Z- B) N. m& v( L

. P7 `9 }7 ^" r+ Nset rand-dynamic 0

1 j% F! D- z+ oend5 I; q2 j6 E& |- t7 K0 p2 z
4 D9 H7 h/ D  V& p* O
to setup-turtles
5 B1 y! {+ u7 v7 qset shape "person"
0 v7 A0 g' r* _& ^setxy random-xcor random-ycor( c  Y9 G8 n4 b/ k; c
set trade-record-one []
. r" Y4 }- \2 E

2 p0 ~0 s7 V: ]! ^4 j( Iset trade-record-all n-values people [(list (? + 1) 0 0)]
7 J9 `* V: M0 }7 X1 N2 H& y$ V

6 K+ J- s7 ~. v$ v( Dset trade-record-current []. B( l- [  J' p
set credibility-receive []9 a  z& n7 G( J/ U9 |/ h, t
set local-reputation 0.57 T1 Z5 Q, h, R: a0 @. n
set neighbor-total 0
! {( I' }$ }5 Qset trade-times-total 00 H( Z' G1 g- b, ^# q
set trade-money-total 0/ l" o6 \/ Z- S. Y
set customer nobody, _: O, ^- ^; N4 Q; c0 Q% y
set credibility-all n-values people [creat-credibility]
  W, H7 ?/ q3 M& p+ c# Oset credibility n-values people [-1]7 M9 S/ x# t$ _& I8 @2 S
get-color
1 M. Y, H1 \3 d& V9 w2 |1 B: v

* Y) V0 K6 a& dend
( G$ v  }% z4 c) J8 I# O7 H( h: S$ ]: ~* ]1 S
to-report creat-credibility
! m/ C9 [. r/ q; {# q1 l1 }, Breport n-values people [0.5]
/ |" m4 w" l3 ?end
- O6 y  f4 x3 z8 Y  X& |
, d& j2 N4 {7 j4 C0 U. N! q; A/ rto setup-plots3 l- {. p" t0 L3 i
) x3 A' Z3 c' e0 S) k( }+ r% y/ O
set xmax 30

$ p0 c/ L1 L& x7 y; E: |! d' x5 a# Q6 q5 S9 X1 j2 |: @
set ymax 1.0

5 z# p* U# C6 Q% D$ R" @1 ]0 _
clear-all-plots
8 L1 S3 _8 v2 \  J. X+ n- n% F+ D; }: P

$ E- t* n3 X; h$ ^3 ^setup-plot1
" N# @/ f$ }( r, E8 _) {

! t% V- |) K& e8 G+ H, e2 L) Isetup-plot2
' z& S( w; Y- f' `6 v( n  |- Z

1 M) D. x, I) g% Y6 x- jsetup-plot3

0 A) Y- ^$ m# mend
3 `+ @- g) d1 h0 ~% y4 g4 n4 i: q/ U: }- O  b+ d* q
;;run time procedures
# n" n* d4 Q: P# m+ a# Y7 v# \  |, r# O+ t9 Q6 \$ C
to go
6 Z; V* _/ z+ N6 e8 n' r% W* r- K  M$ X/ t+ H
ask turtles [do-business]

  m' \7 q5 J1 F1 ]. |+ Lend+ A( @8 D+ x6 L& x+ X
# G( m; M$ X, I. s: w5 M
to do-business ! }) ~  b; r: c8 C1 l1 f
. q- j+ o4 `7 v2 `
* Y: i- r8 q" s
rt random 360
4 K& s9 c( ^7 c5 L5 B9 c

$ a8 b  H, }( t$ h7 }% t* Pfd 1
, c# [0 O, i3 {( ^5 B& M
1 p8 w# n* S) a+ [* L. g' W
ifelse(other turtles-here != nobody)[
# V4 {) h# ]( B% w

' t1 W$ W2 A! K9 a% Kset customer one-of other turtles-here

6 r5 D7 x( L6 t( ]8 q  W0 `) T* C6 R
;; set [customer] of customer myself

% e4 O- \+ Q$ ^; R. i/ R- z3 Q% q+ j8 s& J6 I$ s# [  l
set [trade-record-one] of self item (([who] of customer) - 1)) z) ]3 {- C3 n# R3 o
[trade-record-all]of self
5 x3 V* p- H4 o" i6 F3 o;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 E$ N9 ]2 s3 Y/ n8 ]( _3 B( t9 n6 B8 Y4 I; r, L" Z" B
set [trade-record-one] of customer item (([who] of self) - 1)
0 g+ `/ s+ q% `2 `3 y) H[trade-record-all]of customer

3 [1 y  L+ g4 q4 ^  ^8 O6 \5 Y* G1 |4 r, A' T3 d2 u
set [trade-record-one-len] of self length [trade-record-one] of self
" \3 Q9 C& T0 y% b  y' P' q

7 p5 B8 x0 x* G6 x) u4 E5 T5 Eset trade-record-current( list (timer) (random money-upper-limit))
8 e" j' @3 @3 ~# d) r) Q8 X

% t) Y  C- N$ k2 f  Gask self [do-trust]( W( x) G# c6 x
;;
先求ij的信任度9 R1 B( C6 i- U  `& d7 `! p3 v
7 R( U& S; U) C( ]0 F' i. o* K5 T  {
if ([trust-ok] of self)3 r) U+ }. ?: \7 W" c
;;
根据ij的信任度来决定是否与j进行交易[6 }! m; A6 ?: W) S7 i2 k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& d$ K1 p% G! I
% Q1 Z$ f, i/ U+ s  G[
' H% F' F3 ]( C5 W; j/ M1 G% d, K

  c5 j  h, A) |) ldo-trade

, X$ Z1 a5 O$ {
% Y% \% o) L4 i7 C- zupdate-credibility-ijl

2 V+ X! W0 O  h4 e7 V  o, y( V& h
" W& g: ]9 `  xupdate-credibility-list$ G& g; ^5 R9 S9 I7 ^$ a
' T( j3 J8 V8 p

+ ~2 B" R( J' [6 x4 K3 n! @update-global-reputation-list

9 ]% x& z6 b$ g* Z( z
- ?0 D9 P, m0 Y8 ^) Dpoll-class

5 k8 d! E: p& N, y% u' ?# U- _
2 m3 p) m+ S* m  nget-color

. i+ z) E; I* a& ?3 Y$ `6 a" m' W# v( b$ p* S
]]# e% _+ o: m1 ]$ F( }. X

0 u5 C5 c: l( H5 |: }- ^;;
如果所得的信任度满足条件,则进行交易( w; v' ^8 {# \* l7 j1 }5 u. r
2 L7 `& d) G1 u& N8 k( \
[

1 i# Y6 z; y& a& X' j, Y' g9 |/ e6 e1 l' ?& I
rt random 360

! ~6 s& o4 V! m
! U# H; z% ?$ _- C$ ]9 ufd 1
$ ?2 D' _( A* n
4 y+ s; P+ {3 b1 A3 O
]

* k  j, M( M4 S) u5 ]! \2 K, e5 v
/ y5 Y0 x" s  H- l4 ~end

1 ]4 c" @$ m( D; \
4 z1 f( A( x5 y/ L2 ]% Jto do-trust
. |4 _, F( x" K* b( Aset trust-ok False
9 h2 l4 s) Q6 W7 W: U# K
' w6 r8 s% L# {2 i
# {% V( W4 V' e% y6 J
let max-trade-times 0  _. q4 O/ o" U2 N0 \' J4 V: G# C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 O0 ^( A0 @4 M) a5 Olet max-trade-money 01 i# P6 S! e  f
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 T$ _+ C* O- p- }, n  D6 V3 t; d
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 C5 q! ^7 b% n8 T' {1 r3 R
" z7 J2 L" w. o
. W, v+ P- {; e' o( `
get-global-proportion
' g  j8 k9 e& j. Ylet trust-value4 p* \9 `9 Q8 H, k& H
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)
; p) e; f% h; Z/ f7 U& I( H8 l
if(trust-value > trade-trust-value)6 E! F7 C6 Y) N1 |
[set trust-ok true]9 U9 u7 n& D, [4 U9 v
end
3 U; C/ e) ~* }. w: Z- r; ~. c6 J+ ?, R& g! p/ j2 H. n5 W
to get-global-proportion" q3 g6 Y$ s. K# e+ u8 F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ H: N# M7 r( `' b% K9 A/ h
[set global-proportion 0]
+ |8 y: D' F% E6 W+ V/ ^[let i 0
2 `, f0 d- K5 i, R5 y; f6 c4 ^4 ulet sum-money 0
1 q6 [8 s, Q0 H2 H6 Ywhile[ i < people]
8 Y6 y: w& \& [4 p* y$ D[
( j0 |) q9 s8 v8 t  E$ Sif( length (item i5 e0 a: o5 Z, H; Z( n3 X& f
[trade-record-all] of customer) > 3 )

1 Z# ~) ~8 ^$ A+ a0 ?[  g. Y, G4 f- \% z4 y6 i' J& W1 E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 N5 ?7 O$ Y- ?! g' y5 J2 ]1 K; a0 G
]
: z0 g* S. }7 v  m9 r# i* o8 k2 _+ ~6 |]
, R4 \% Z5 N; K2 zlet j 0
1 \  f  B0 e4 t, J+ F1 flet note 05 b+ _% r0 @' E! h$ Y
while[ j < people]
8 K( B- N9 ^, Y* t/ Q: [, D% {0 e[
' P* ^1 Y$ e) Oif( length (item i
% ^0 L2 f6 j$ x1 F# L[trade-record-all] of customer) > 3 )

+ j4 u( G' B4 B8 Q) ^[
5 y5 x( {7 G) e' L) Eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 }( R0 q6 Z  l$ L, v
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% a1 b% t& m. t: u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 q, k0 |7 B" D( k  `" @0 |  Z0 D0 C]
5 P2 V. @* M* Z2 s3 d+ `  k]( z/ V4 B6 ?$ {& {7 J" d) d
set global-proportion note8 b! c# h# M  \; v
]
& @6 e9 z( e5 _' V$ ~) }1 yend
. T0 N) o2 Z1 D: T, g3 f. k" T8 i
to do-trade) V3 ^8 s; C1 Y
;;
这个过程实际上是给双方作出评价的过程
4 J+ E& ]% E+ O) T/ W& j  yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; D& p! I; O3 _2 F! v' ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. z! l& `2 y1 y' }6 p; I1 mset trade-record-current lput(timer) trade-record-current
# d. }. I. @7 s2 Z# X- j$ w;;
评价时间% W0 N! V/ y* ^/ T6 {$ D
ask myself [
1 i# \/ H. D2 S2 m, Uupdate-local-reputation
  h. i, R7 ^/ u8 m% Cset trade-record-current lput([local-reputation] of myself) trade-record-current7 |* `( Y& |5 }. r
]
% H* _9 X5 `# s( f1 lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 x+ ?' ?, d& w% c9 ~* z. V;;
将此次交易的记录加入到trade-record-one  x6 L0 B* f- E. z# b3 [
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' t1 b1 v3 d' Y8 Y" f* u4 s- J4 Y
let note (item 2 trade-record-current )* ^3 f: f1 [. e7 g
set trade-record-current
* R3 G' ?+ ^/ F7 o(replace-item 2 trade-record-current (item 3 trade-record-current))

1 E* C8 n/ A3 [( y4 r5 f2 w) v- vset trade-record-current3 y0 N+ @+ `7 M
(replace-item 3 trade-record-current note)) R  H6 R' u2 \" L- _
: I3 W" Y7 a, W* r/ k- f4 q% H

( w7 U+ o) e! m8 jask customer [6 G5 {! t4 G. N/ A+ }. k; J
update-local-reputation
. |: k1 z: O8 c  q) J% pset trade-record-current
8 G9 X* \$ U9 G" L(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! q3 g- q. G" Y- j
]& n  J- a  _7 K. h

1 `& L2 G3 d3 F- W
3 M) C6 D7 q1 S8 z$ m+ o- k
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' t" {( j* C- q4 K; q

+ K7 m' p/ r# r( k) wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- o# ~# D4 R' i" a! |% g, W
;;
将此次交易的记录加入到customertrade-record-all
1 T- a; Z% U. o" yend
) U4 I8 I, w4 j( u$ U2 Z# X% M9 ?% V6 }, k, n% G
to update-local-reputation
2 F/ ^- H) `* |( w# B& J; M, yset [trade-record-one-len] of myself length [trade-record-one] of myself
& n% J! \4 I+ D6 v6 j2 i( A7 L# v3 L
3 U, r( C8 w6 ~# j" f/ }3 |, R% H* q7 W0 H" R
;;if [trade-record-one-len] of myself > 3
7 G+ _6 m3 o2 K/ P$ B1 I2 E! X
update-neighbor-total
' A) N! s, u) e5 d+ K;;
更新邻居节点的数目,在此进行; [: r5 b5 G' [1 p' b# Z
let i 32 a6 K" z$ B3 D" s) s
let sum-time 0
. D" N; Y! {: jwhile[i < [trade-record-one-len] of myself]
+ N" w- N7 T$ M; Q[  e+ L5 j- q& B% N$ t# @
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# W5 y) ]1 q7 K" Q4 b. tset i' d8 _3 ~; P' z5 L2 r
( i + 1)
4 r7 p- T0 o" C! k
]5 j% b6 w3 P  u- `3 t
let j 3
3 X7 ?( k0 s) _5 T" elet sum-money 0
; W  {/ U; L* ?while[j < [trade-record-one-len] of myself]
. i+ U2 {. |! s( ~2 ~* [8 P[2 U! ~& S* n$ u4 F  w. O
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)
( Y" p9 W/ r# |4 {set j, b4 C* B: q9 c) [& n1 Y# x
( j + 1)

. @, ~; R; @7 O8 L( f]
: R; N2 c# W" O6 G7 Jlet k 39 O$ w7 D  p6 ^' H# i; K4 U
let power 00 z# `5 j4 |( o3 H& l- G
let local 0
( z  I  d) s* h/ xwhile [k <[trade-record-one-len] of myself]+ Q1 R# {$ a! w% o8 c1 j
[
& p. l0 X0 [6 g/ Vset 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) ; c0 p; }. l4 H  P4 R& A
set k (k + 1)$ Y4 l0 I0 w  p* {- J  |! j
]
: G- ~5 ^; ]- g; R- Z$ ^: q1 Dset [local-reputation] of myself (local)
; p! C% v* u" A3 J( Kend6 Q, ^" L7 B! `8 ^
7 P; k- @4 w1 {1 `
to update-neighbor-total+ C2 e( N$ P6 l

; c. @( i  p$ ^+ sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ y1 b3 S% q# w
" \+ C4 X& J( T* C& H" A& j
2 n- W5 x$ M# i; }
end
% H5 e+ P* L) {2 x' W: c7 ]9 Z% M- v. H4 T* L
to update-credibility-ijl
  c( O! k0 h  w7 J% }2 a
2 s' e$ i; }2 ]3 ];;
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。
2 n" c) {$ Y3 n" j. N! glet l 0
& s: V  c* N/ W9 I. c2 ywhile[ l < people ]
4 K% r; U1 n+ q, M3 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. p# r1 k( H: {% `6 Q2 x6 s' M! u
[
' x4 w7 u. u6 ]3 Zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 N) Y) Z' j$ T9 ?) _6 A( p: Oif (trade-record-one-j-l-len > 3)
; y( t8 n0 K" R( W[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( |2 y: k  N6 i' H
let i 3
2 X3 N# y4 s( h4 X# Vlet sum-time 0
  r7 n& [% w: z# A5 wwhile[i < trade-record-one-len]
& v# n/ E' p* X& M[3 |$ e! ~5 _9 i. w
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) T$ N  i9 g% S9 d, V
set i# O6 n' [" A5 p% X* R' J6 ~# j8 x
( i + 1)

' s  u) K$ B# l" Z]# B% M" F3 U# W6 L
let credibility-i-j-l 0
7 O  B+ I2 n0 z. Z# o;;i
评价(jjl的评价)
1 a7 J( H/ v; X1 O  ^  i( ], A5 [let j 33 @! j% E9 J* n5 R) M
let k 4$ p, Z5 j0 [' j' L0 M
while[j < trade-record-one-len]
4 ?. I7 ?' e/ A; h+ G- [5 U5 E[
9 R( h; N6 f1 O/ p7 z2 m& Qwhile [((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
9 ^" y: D: p; n+ t6 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)5 S; t  r, T6 R) J4 q( K& P9 S
set j
7 m- N/ a& o) K; k; Y( j + 1)

9 _+ }! j% F% L- I% ^! O; []
: t# X& X& B2 z- `4 lset [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 ))
4 [6 k' F  u0 I8 ]2 K& S6 S3 s7 J  X: e5 W6 m/ N/ a

  j( f5 y3 C% J) zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  _0 f. ^( T, x1 I;;
及时更新il的评价质量的评价) ~" O8 j" G+ m& ?$ u0 ]. n
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 w8 ?1 J* `" F" J; Z
set l (l + 1)
, w' ?" C7 q1 j- ^" X/ T3 []! u- b# l" J0 s, N# ~# q3 C
end* _, ]6 m& s' e6 Z. P4 J" A/ A
* K/ K$ f; j8 @: F/ g# g; \
to update-credibility-list: C, }  T% C5 m! U1 a
let i 0
# w1 {$ F' v; ?- jwhile[i < people]
: j6 m: U* m" t  U* ]9 m$ J2 c[; c8 b! C2 f9 O& ~+ b( w; Z/ ?
let j 0
  }) X0 r- n1 [6 f/ C  ilet note 0- {2 o& F( |- z% w, j$ {+ g/ v
let k 0
5 d& _/ F9 |  \3 J2 _3 M;;
计作出过评价的邻居节点的数目
+ k5 N$ d1 t6 B& h  i4 Xwhile[j < people]  ?  z' a2 r# A1 n6 L
[6 P; O7 e! ?6 h! ~
if (item j( [credibility] of turtle (i + 1)) != -1)
  f( G5 f) e9 N5 \. d;;
判断是否给本turtle的评价质量做出过评价的节点
0 h3 s, D; O6 q6 S% u& m[set note (note + item j ([credibility]of turtle (i + 1)))
  s  b6 L2 e# X  g;;*(exp (-(people - 2)))/(people - 2))]
# N# j0 P8 a+ g- W, T9 e
set k (k + 1)
9 a/ J& I* T) U. A]
( o5 J  x: w! A- I8 d1 Z% d  Vset j (j + 1)
' Q# h8 q. G; G$ u- s9 G$ J5 F]
* z3 y6 y9 L. o7 N" b9 Bset note (note *(exp (- (1 / k)))/ k)! J- i/ C: G7 a. e
set credibility-list (replace-item i credibility-list note)3 v4 C' i: n5 X8 M8 [; u
set i (i + 1)
/ \" c7 r) c  M/ ~]+ ^, ?! |, `3 V! M( F% Y) q% A
end, g4 h( n) }  {' S& \
3 Q! S8 n5 |' B7 Y
to update-global-reputation-list4 ?" h: z6 l) z( ]
let j 02 [2 G4 B9 J& z
while[j < people]# x  ?9 i* o! P* H( {$ I3 k
[
# ]2 ~* x# Y8 e; Slet new 0! j4 f3 [4 I7 q: a# N$ {
;;
暂存新的一个全局声誉
0 y  Q: ]. B4 v2 v5 Ylet i 0, |8 K% ?: ]! ]; G
let sum-money 0
! J  J# D9 R/ y, g) z  h0 |: j- mlet credibility-money 0
. T' B/ t- `+ V; e4 X5 g& ewhile [i < people]
0 ^+ t( b' M( Z[# k& ~3 S1 ~& b/ b8 N) [1 G8 B
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 A$ N5 A8 v" l3 c2 }. {; ^9 x. X& r
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( M/ l% S1 n0 B+ e6 V+ hset i (i + 1)1 \7 M1 x9 r, \
]
7 z5 u4 a" p, \$ Vlet k 0! h! T8 V- j. A1 j4 a
let new1 0
' r( ]% _# h" y) u6 |0 Vwhile [k < people]0 ^$ f7 X5 i; C* ~$ I. U
[
6 n3 ]# A' J2 ?4 i; g% l3 tset 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)3 @  J$ F$ w* x
set k (k + 1); k) N% Y/ f6 ^3 L! M1 C1 r
], P8 }1 `8 Z! a% ]; ~  T# R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) o' g. k/ _* q& U6 y# iset global-reputation-list (replace-item j global-reputation-list new)& _9 W: v+ j: o# F) ?4 m
set j (j + 1)
* p6 q' R( v. p% d4 {" |]
# Q  Y* j) A8 R3 ^6 N/ X8 `end
* @9 a5 B5 X4 n' F8 s) I
! T! w$ {( C6 E& r- L4 D# W+ X9 p8 R. w3 S% X% r& R- E- k

$ j. ~: j) a" g* ~/ _( ?: F6 _8 wto get-color
0 W1 I$ s" e; ]: [- S7 e/ Z. c* e- _0 p# R& p# L# [' V: {
set color blue

4 D' u4 @5 k9 f4 c9 Q' p- P# Fend0 \$ o8 ^( {, N. F

& V- K% I6 Y. n9 [; hto poll-class
% \2 m  ~! q$ i. z3 {' Send
1 v, p1 |; y( l0 g; R# R. E4 ?
( m& a$ o3 t) z1 o9 [6 L8 o8 |to setup-plot1: \. o0 |* d/ z' e1 }

5 v6 k+ [" U3 q7 w2 U. ?- Oset-current-plot "Trends-of-Local-reputation"

2 J& ]& d! Q) R8 P& Z5 _7 ], k& E9 q; e$ F' i: h$ [
set-plot-x-range 0 xmax

& S( w9 T5 I  X: {+ R7 S  b4 x: U+ J  D( g1 U
set-plot-y-range 0.0 ymax

7 C$ V) R% E+ h' C# \$ C3 ~end
3 Q' b2 W* Y# ?% W4 b2 p2 g
3 Q% J. N$ Y: R# Lto setup-plot2
" x( @3 V6 N& S( B
/ Q( t: W7 p1 c; t% iset-current-plot "Trends-of-global-reputation"

; Y# c2 h, H5 I; j1 i% H, X& B6 ?  V! J! V3 A$ H' `
set-plot-x-range 0 xmax

9 k/ Y# @9 D& M3 j' _
( C7 h: J* V1 g) zset-plot-y-range 0.0 ymax
/ D/ @- L+ }9 k; F6 d$ B( T6 z  C# s3 T
end
1 M+ E1 |2 ?+ I2 i( f4 v
+ S1 W. p0 \. H* h: Gto setup-plot3: ~& p8 I5 E2 L9 p

3 P* D" I( s$ e7 D8 Cset-current-plot "Trends-of-credibility"
: H1 e7 K; s# u; y4 V9 i' W
5 f( G0 D; r9 ]) R3 p
set-plot-x-range 0 xmax

; K, \( M( s6 X1 V; H4 _
% O6 A& v: W& Sset-plot-y-range 0.0 ymax

; r0 c4 ~% f2 }end
- h# d: ?# t, |& D; L8 f# f7 v
2 S# }3 ?8 ?" p  yto do-plots8 ^  Z1 X8 n# y0 |
set-current-plot "Trends-of-Local-reputation"/ `1 i: c1 X% S* S$ W
set-current-plot-pen "Honest service"1 @! O/ k# T7 D# d) I' {; U
end: u0 i3 r) c" D' `6 r

( a  z6 j! y9 ~[ 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 C$ O% k& S5 P2 T5 R

" V6 S& N0 H7 Y0 L7 j7 A$ p; }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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