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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:# Q2 j6 Z& q/ f' Q, f
to do-business
- ]7 T/ X+ m+ { rt random 360$ a- h, s7 j) N2 W6 I0 p
fd 1
4 {1 u! _; A( y3 H4 n ifelse(other turtles-here != nobody)[- ~3 ^  ?* P3 f3 L
   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.
# a/ {& I: a" N9 Z; h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : l8 k' A9 k+ D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. ]( u" _$ |6 |$ B* ?2 y0 B
   set [trade-record-one-len] of self length [trade-record-one] of self
0 ]' j3 H" d( F   set trade-record-current( list (timer) (random money-upper-limit))0 U8 k! `4 ~1 T6 E9 M
% B6 l7 h4 |: k2 A( N; J
问题的提示如下:) C; `, m6 ~. R% m
9 {1 J: S1 z& b! `/ E# }5 D( S
error while turtle 50 running OF in procedure DO-BUSINESS
- ?6 p, i5 y2 O% ?% N1 B$ c  called by procedure GO8 ]+ A6 N3 k9 V1 N7 T" O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* }( A7 N' I! ~4 ^; }% n* C
(halted running of go)
- H+ C1 w1 c# G: U1 _6 Y" q) _% f$ J* O- Z6 x0 q
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~~
/ n7 D, y# ]9 l  G9 ^0 e2 l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
# S, b. ^. W& X$ qglobals[
$ j% B) o( a9 h2 l1 {4 vxmax
: y" K1 v2 O4 yymax$ i/ D) o* Q7 u. f$ u0 T2 v
global-reputation-list% U( ?% y) T' [. @; y
! r' @% ^- w9 T$ ]$ ^0 U# f2 Z
;;
每一个turtle的全局声誉都存在此LIST
6 O& x$ C0 r7 ^9 g  ucredibility-list
! l& I+ H" c$ S* j9 I;;
每一个turtle的评价可信度! f4 Q2 G! z) }4 l2 g
honest-service* l1 D: p- b  I# A: D: ^- h
unhonest-service
5 X/ l8 u4 d- I+ ~2 g+ s3 {oscillation' M8 ~8 j3 |( r2 g% F- N' B+ ~
rand-dynamic2 ?1 R% H9 o6 _* d0 Q3 P
]+ Z$ S  c0 J9 W6 d
& @! X$ ?+ ^/ s
turtles-own[
5 n/ L1 b$ V% Z8 Jtrade-record-all
* i% a$ s6 z, Y;;a list of lists,
trade-record-one组成9 g2 }/ c0 m' T
trade-record-one
; f' D; S* z) H) s;;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# w* A  |9 U& g, t* M9 \& d# l

( A3 Q$ Z1 N; I4 ?6 _1 s+ q;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
3 |- _" I2 e8 ?# L! V+ @0 Wtrade-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]; [) X* \7 s" _8 H( Y+ S( `
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
) P: L  |9 O' X4 }) Hneighbor-total; i& |1 W% w  }7 s; c4 g4 h
;;
记录该turtle的邻居节点的数目
" s: Z# H8 |/ a: v. V0 R) R! g8 y3 y. Etrade-time8 j5 _$ \" V0 c- D  [& |: A+ k
;;
当前发生交易的turtle的交易时间" q3 s/ g+ z$ u5 d
appraise-give
) O* D4 C# r$ V3 ]5 m# L9 Z. U;;
当前发生交易时给出的评价
' _" e3 a" }( x; R. d; \appraise-receive
& r4 }; p1 Z! r2 d9 k7 R7 b;;
当前发生交易时收到的评价5 p6 q  Y2 f: K! @: _8 G
appraise-time
" _% H, E6 p% }" @9 s% u* |! K;;
当前发生交易时的评价时间
, e8 H2 K8 e* M5 C! O( Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) R8 o! y  o: O$ I" \: Otrade-times-total
/ Z$ l3 ?0 T: b  t' J;;
与当前turtle的交易总次数
, x: }; N) F0 s. N* K: E% P" etrade-money-total: _+ N+ a; V* ^: v
;;
与当前turtle的交易总金额& W+ M! H$ I: z$ \* g: m6 P
local-reputation  K2 G4 |1 a, ?( {' j1 J" x! y2 G
global-reputation9 d+ z' {# p- l/ w
credibility
9 {( J  F# Q7 J' c;;
评价可信度,每次交易后都需要更新: |2 }7 {9 I; C5 x) d% E# B. [, ~
credibility-all, }: B4 P1 i: Z5 \! f- B
;;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
% Y( _5 E+ O1 _! T
; z5 J3 q1 k& b" I) ~( \;;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! U0 f1 O/ ~* _+ `; \
credibility-one
1 p* g8 p4 p( R) a; P' N% W;;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 R) _* I' U' h2 U7 W
global-proportion8 i. S- J" u5 S2 G
customer
/ d0 U2 i0 Y: I( y8 P" xcustomer-no3 }; i. C& _: c' W- {. a
trust-ok
* G7 f5 w# k: V+ s1 E, k, s+ htrade-record-one-len;;trade-record-one的长度
6 S3 c6 o" G6 ]! j" V: q7 p! \$ T2 \( t: v]: ^! [$ s1 j8 G, G  V0 L8 ^. w

7 S- @8 b; f' B5 @4 F;;setup procedure
5 Y7 S, E0 U  t
- P! U+ m4 R0 m1 v) w* u% K# c& Zto setup
6 X' G* \$ k* {( o" c0 O4 d5 M7 ]$ u. N. f/ n
ca

9 W% M# A6 V! g4 E' d8 j, n9 o- ?6 W/ i6 z
initialize-settings
- E7 J5 L9 A1 [9 K

0 F0 s+ H8 T" h7 kcrt people [setup-turtles]
1 L, q2 ~6 ~! ]4 Y7 R- E
7 P$ f- `% a9 l
reset-timer

& U2 I5 B# K8 q; U2 |
' `2 U  l2 m/ H) Bpoll-class
9 R* h1 Q+ Z( M. G, R" i  Z3 }$ q; g% e

. V3 Z/ S; Q0 Vsetup-plots
) B# t8 x: t' G- z
! w" _  q6 l( z' k
do-plots
4 Q+ Z: {% d: ^7 d5 f# K
end
! p$ }* h& L7 a6 W& _; A5 |- k- R* k+ ?3 h* x( e+ k6 J
to initialize-settings
8 B: r6 @) j* @0 {4 F
! ~5 U# w6 d% Hset global-reputation-list []
9 B$ ]2 B9 \! M  q" `% K: ]6 v5 M
9 U+ i6 Z8 f) b* O( ?4 V* T/ r- R
set credibility-list n-values people [0.5]
7 t- N6 _( C8 m- R% u1 w

- S( I* Z4 N. T  bset honest-service 0

" m1 w( H8 e+ _; K; J
  I9 A8 i! j* O2 cset unhonest-service 0
( P9 g! V' W) ]* f. p9 t

+ c( T5 l3 J/ H0 l) uset oscillation 0

, S9 ~9 n# ^3 U! d" K3 L/ q; W7 G- X0 r$ A6 A  A
set rand-dynamic 0
1 _3 F6 R: Y4 d# i7 v2 ?0 ?
end
; `9 s8 Z; y6 O- P
1 y8 X5 E8 z: {3 Y8 Lto setup-turtles
6 ~, u, [& G8 _( d* _# b4 \. i& r  Iset shape "person"
" s: E3 J* h/ _. D( p, Msetxy random-xcor random-ycor# }( i! u. q" Y" S7 H! O9 k( |# W
set trade-record-one []
- R% v5 m& x4 Y2 ^( G
+ D; `6 X  T2 Q% N/ N7 ~
set trade-record-all n-values people [(list (? + 1) 0 0)] " G+ {9 t3 \: A  O: [- k
- I4 K: _0 y, S: E1 j
set trade-record-current []
# m4 e6 a. c* S! sset credibility-receive []
& |- z$ q9 z$ Y) a$ Vset local-reputation 0.5: L% b7 }( m* J: C8 _/ L- E& |& ]
set neighbor-total 0
1 q' b" i! b% i' a( wset trade-times-total 0# `, B( e6 i+ v1 k* C' L. J
set trade-money-total 0
$ i$ G, x( z# Iset customer nobody
! l5 @* v% q+ U6 z1 Uset credibility-all n-values people [creat-credibility]
( d% L  ^+ T. N1 f# Q7 C6 Fset credibility n-values people [-1]
$ Z* y; E' T1 M& c9 l) @( F" cget-color
3 G' [. s  T( h: `1 `7 n; J; N

9 u0 g, p3 d9 w6 bend2 O1 S8 u. H; _

1 r. i, r" V% k0 Q( ~& b( f- Bto-report creat-credibility
. L5 ^+ J( m) V2 ?report n-values people [0.5]
: v! M( b- V/ [" i2 y/ V1 Wend2 X- Y0 [0 w2 N; N, I9 D: T

/ S, v# ~3 t; w+ T) ]to setup-plots9 ?" j4 ^% }  L) O6 R
( k2 \# l3 y7 [  k
set xmax 30
) x( E* Y- {: l% T

7 B/ x3 _' l; C5 X$ Wset ymax 1.0

6 Y) U& n+ Y8 U4 m2 H9 H) @
  ^2 u8 i3 }& _8 D& ]clear-all-plots

2 ~  C7 I" q9 v/ m# n/ T/ }$ t
9 o+ ^( s# j: zsetup-plot1
( U( L% ^, C+ O; p/ m5 m; _
7 D* J: I8 o6 F2 r' m9 k5 B  M" _
setup-plot2

5 Y- d1 e" G5 ~& j
' X' ]& V, {7 O& Osetup-plot3

& S6 O9 g. b. ?) x2 `end$ F* E. |9 ]! A4 D7 W
3 ^3 M8 R; Y5 o
;;run time procedures  y; `: ^4 @$ M0 u" q6 w! b6 ^3 [

! f! R3 Q' i5 ~. Pto go! ?* L- m5 m7 a8 s
2 b2 g) `5 s3 g# j% x/ H, D* M
ask turtles [do-business]

1 l9 X/ I  |9 w# d' q+ Jend1 I6 I/ B3 A8 U; v3 w9 t6 t! f. g
# M+ n/ ?: b# i) e; Q
to do-business $ t2 g7 k5 k* A; a- @* ~# z

# j, O3 E5 B3 T5 |" n9 o7 b! }( s1 [/ o! q
rt random 360
' {2 E0 }' E+ @: g, ~4 Q; E

1 \! x4 b' d* N. X) H0 ^- F, H+ gfd 1
1 H# _3 I  X: |; ^7 Y
' [/ J/ Z2 x: S4 `5 j: {
ifelse(other turtles-here != nobody)[

9 U$ w3 a' {) Y' M5 ~; A  }$ d, f9 ]3 `; f1 C( H% X4 c
set customer one-of other turtles-here
; [2 L# B9 r% ]3 C$ b" a* Z
' Y- `7 H" }8 o) g
;; set [customer] of customer myself
# I% p8 Y% a7 z5 K" V
3 J5 T7 e/ w; V" w. u
set [trade-record-one] of self item (([who] of customer) - 1)
. r1 ~  K: w" j2 ?; J8 v& E4 o[trade-record-all]of self( l+ @+ V# o6 X. b% k
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- ?5 A0 P* Q- M: T5 }( u$ w  G3 l* `' v- z/ s
set [trade-record-one] of customer item (([who] of self) - 1)
2 g/ U$ m. d: L& H- L  |& E[trade-record-all]of customer

) ?4 o/ f  O" F8 f2 ?% a: ?5 x" M$ A6 h' q' i
set [trade-record-one-len] of self length [trade-record-one] of self

$ f1 j5 |6 s2 ^# @/ I1 M6 v2 H# h$ b9 t$ ^" g
set trade-record-current( list (timer) (random money-upper-limit))
2 O! U( s0 [. n! D7 B

4 N' n- d1 e  W1 R9 pask self [do-trust]
7 o5 U8 g: g2 x: e' H, G7 g;;
先求ij的信任度: |) x, P( |. @! L( g* }% P2 S# [
8 Q/ e0 h. ~$ k" M* v! V0 H" `
if ([trust-ok] of self): R2 j" Y% I9 \' W0 s; a6 @
;;
根据ij的信任度来决定是否与j进行交易[& G' I" H4 `, U% j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& D/ A2 a, L/ ?
7 j8 L# b8 U; i! b[
4 k0 o1 X- e( S6 u, H

; s& B  A, l- j3 i% D9 _  \& Kdo-trade

: E  H- D. m8 V7 U% g+ y$ \3 {9 f* V4 |% P$ t# e* E1 u
update-credibility-ijl
, \* M; {/ t1 D" c. \
# g  ~3 H) Z" m) [& q3 L. h
update-credibility-list
5 p. j) ^1 ^1 o# ^
; u5 `; @/ o# D) H. a8 v
! g: E, U$ h8 d3 \4 Q! u- @) u" h
update-global-reputation-list

$ [0 y4 G" U) u) K" n7 Q
, ?2 K. S  t3 e$ L' s2 spoll-class
. X# C3 A; q9 ^

1 ^" P8 `/ A  M/ Eget-color
( O2 T0 K2 a  ^" n

: q  }* b! Y7 z: a+ P! Q) o% a]]
9 ]1 o' ]# ]. e2 l/ z
) L! g0 H6 S9 Q" I- F4 T;;
如果所得的信任度满足条件,则进行交易) ^: ]% P: A8 p" e% y5 L* m

/ x5 E. x' ]9 F( z$ k[

! }4 X/ @. _* o6 }( X* }2 v& D
! j9 \! o( c! trt random 360

5 }4 t9 {% r9 o2 J; G& l/ x+ X* T# i' Q, i! ]
fd 1

! N; p' v0 J0 G6 v
# l% u# j  i+ m2 w; d7 X) b' I]

1 U2 d5 S8 R# e5 I/ T  R' ^+ M# Y7 W' {6 v' t: i6 P
end
$ o( h+ F1 _! u  C5 F7 b) u
8 ?3 ?6 U) E& _: f
to do-trust ' C5 A; P: T; J# R- E. u
set trust-ok False
; n4 ^- U! s2 r; B1 T$ L5 k- Q( a
9 M+ ~* @* T4 J6 n
  ~3 d3 E+ u. l  [6 M% ], y0 h
let max-trade-times 0
9 ]; M# d. P& e% t- ^- V8 V+ Wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, N6 `( e4 L* d! r: P" slet max-trade-money 0% T' a2 O5 `8 h( _9 |- m; C/ g
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 z# x4 q* [# v0 N* olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: O6 M, k  J2 u) H
" ]. s7 {9 Q5 G" j. u0 z

- U0 l0 P( T" ~/ \3 N; G; |) \get-global-proportion8 p$ ~1 `7 O5 w* s3 p- b- H. a
let trust-value! x  P8 ^2 _# F* `
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)
& @- r9 I1 W7 y+ w
if(trust-value > trade-trust-value)0 y7 b3 u0 f: H
[set trust-ok true]
2 [0 N# y& D9 ]6 a1 a& oend
+ v" x( ^$ b2 `1 R
/ B7 i/ I( p! h( N5 P+ Wto get-global-proportion
# h4 z  J% m; j, \; L: R9 O$ P% fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! H% W5 T1 t. P$ w  x" h
[set global-proportion 0]2 p0 S+ ?0 L  Z( |$ u6 s: z5 D
[let i 0
$ w! G  o6 g" O% ~. rlet sum-money 0; _1 }' G" w+ }3 v9 \3 ]& i# x
while[ i < people]
1 \) O1 U7 y9 F' a[
2 R0 e* s7 A1 iif( length (item i! {( L" E( r2 D8 R2 c3 U2 R9 X  V
[trade-record-all] of customer) > 3 )
! m4 D+ u8 M; k9 X7 T6 U
[, W6 \9 t  @6 L) ]6 j7 x5 L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( \+ Q* e, F& u4 Y. R; Q% [5 y]
* B. l. H- \4 P0 T]
1 r- w$ k1 H6 B- o2 ~+ j8 T1 ^! s8 tlet j 0$ k. [9 p* A$ _& o
let note 0
% }& h: g2 s+ \' M0 x0 Z- p6 e" rwhile[ j < people]4 d% A8 M( {" C$ l6 t# i  K
[! R4 _$ Z9 R( a2 |
if( length (item i
9 I$ M/ Q3 [7 |( T9 d. P" K; b: M[trade-record-all] of customer) > 3 )
7 T6 f' y* |! f& O2 {" Z* _
[
! r( v5 F9 m% rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 g) B- Q; O& p4 G4 Y! n
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; I' g. P' T; O9 W5 m% ]. x  e: j/ q$ G$ i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' i  o/ d! R% O% q. }+ u/ n
]
* K2 s2 I& B/ }1 |. Y6 z2 e) K]
& P4 d) @- L% R8 g3 s$ ~set global-proportion note
1 b: Z, ^. C" N/ j]
* r: A0 z& G+ g- p2 Eend. t8 D; o5 }6 ~7 t

) K$ I- L" s' S- n6 mto do-trade
7 h9 x% h# [7 Q;;
这个过程实际上是给双方作出评价的过程" |+ H+ M3 V) p2 E0 X2 \. P/ E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! h  e2 f& [% q9 Z' S  }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 `2 O* I1 R9 l) e
set trade-record-current lput(timer) trade-record-current
; u$ v0 ~- t  _+ b/ }) @;;
评价时间
) T$ V- ]: Y  e) Kask myself [
* }' A. _2 M% N1 ~( y: Pupdate-local-reputation
, X. r! S( m" x# h! J9 V8 p' eset trade-record-current lput([local-reputation] of myself) trade-record-current9 l( O$ ^& n" v
]
8 Q9 G$ Z4 e. G2 M: z1 E* iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ Z& N( ?/ Z3 j# y
;;
将此次交易的记录加入到trade-record-one; M# `/ P5 ]1 |, j( |
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ {6 y% P7 E/ g) S7 @0 Glet note (item 2 trade-record-current )
8 ~6 y$ R% @) S( Hset trade-record-current8 z  }, ]# z6 G( I. N: I. H4 t" v
(replace-item 2 trade-record-current (item 3 trade-record-current))
( g( l3 d3 U9 B* i
set trade-record-current) T! L! P& J+ R+ d9 n+ n, @
(replace-item 3 trade-record-current note)
" x7 s: f6 k% G3 x( G& z/ @$ ^+ L+ b- {1 C% }, ^) S6 k6 z
, Z$ p7 ^. m# Z3 x7 l$ s- E
ask customer [
1 o. S# ], x& V- aupdate-local-reputation/ c$ M* ~% h% i+ w
set trade-record-current" n0 _1 L4 ?8 L6 i) P0 R
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 U) O) i, _8 x) R, {* \]/ v7 C$ U2 @' N8 D0 @8 L: Z
, T, L1 X8 f3 K7 H5 z6 r
) ]6 H2 x  E* ]" x+ D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 \* s' b5 D9 e

  Q2 ^, U/ E# ]set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 a! @4 G4 O% d4 z;;
将此次交易的记录加入到customertrade-record-all2 R# Q6 a, ^/ z: `
end, ^: @! [' N/ ]5 m9 Z* A- S0 A3 c
  D% B' u7 R- S4 D2 J
to update-local-reputation% o8 \. N8 u/ C5 c' U3 o
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 q% N; \& y, w+ M, u' |; Y
# r% x  H1 l1 D' F/ F, \6 f' U5 D7 j6 n7 E) s, J2 R
;;if [trade-record-one-len] of myself > 3
& _. E. d% X- }8 n9 Z" M
update-neighbor-total
6 k7 n" Z3 b3 t8 A% T  };;
更新邻居节点的数目,在此进行
+ t/ e# _( T7 E  O  q$ olet i 33 [( q! I) Z3 D) ?$ K
let sum-time 0
+ Q  b( X- m# `' D& ~& Y2 j0 Uwhile[i < [trade-record-one-len] of myself]" N& G! q5 `0 K8 z  |6 I) j' I
[" C& T1 c( g+ ?* @1 ^$ p3 v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" p9 ~* ?! G: h. a" p% V& jset i
2 ?' ]- R1 b4 \( i + 1)
2 e' n$ |* X( g. y  g- A# r$ A
]
; Y+ z" @3 ]" i; u8 N7 f, vlet j 3
! M% |( }7 x/ _let sum-money 0
) a$ G1 W% J* x) ]' Cwhile[j < [trade-record-one-len] of myself]* X# V1 q; `; _; i) D) Y# q
[& A- k$ `/ X' j- Z
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)8 ~% b5 c4 [. J3 O
set j* a+ n2 P/ W+ M! u% h3 D% z
( j + 1)

: _6 w9 ?% w5 W& q) ^+ c  }6 S]
6 Q1 G9 o$ }/ `  i8 |let k 3
4 P; D% N. }: O& D. M8 H' l/ u' w& @let power 0
) w8 ~" g8 @$ k, rlet local 0
7 O( N2 P/ h; O3 Z! b9 Qwhile [k <[trade-record-one-len] of myself]
/ e) S( E7 u6 H8 L9 I4 t1 [[
. {+ L1 `1 S# u! A" j, Fset 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 G" o' D. Y6 lset k (k + 1)
) t+ Q! B# c( h6 B* |]/ h1 k1 u- r' F9 e3 T, x9 W* ~- F, d
set [local-reputation] of myself (local)( A, U4 `7 d7 D: t0 ]* B8 }) a9 U
end
9 N, b. F* z4 u. c, `( ]# u/ |+ x+ \2 r& B* w
to update-neighbor-total* s' Z( J9 \0 s. R) r# `0 H3 k2 d

! E. F$ I8 S0 p+ v, `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% f$ h* E' V$ X) Y, I9 a* L1 ~) K2 n) c; m* D! f1 p

2 v" Q& Q' J5 u! d' X5 Mend6 k/ U' O! }$ M& Y

$ e- [  R- e) t$ n" Oto update-credibility-ijl
8 K8 s; X- b1 h9 q. D$ p( o, g( f' j/ y: ~
;;
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。
7 E( E5 t3 o- C& `: Blet l 0. H$ n+ J. }  A& R+ P
while[ l < people ]
2 Q3 }/ ]! o8 o! m* a3 k;;
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
# ?' B9 `. Q% W# A[# E3 @0 q& O3 }
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& h. F9 O9 @; ~  A3 B( d. ]* Xif (trade-record-one-j-l-len > 3)
9 j  q  G4 H1 c- w; v[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
# {0 U& g. S2 D9 v: {let i 3
: i' L& U6 c9 H! blet sum-time 07 n: }9 m# R6 @9 q: ]8 z% v( I
while[i < trade-record-one-len]- `! ?9 E) Z# F4 |4 r6 k
[# l0 A( _2 {) O9 @' P8 P6 }
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( n: f; v4 m0 n* s4 uset i
+ |" h* O+ c1 I0 J# r( i + 1)

/ j8 t, |1 Q' B4 l+ ~9 T]
- @7 z/ B4 N4 C0 c$ vlet credibility-i-j-l 0
' }2 ~7 e7 X5 I8 @( f: b" Y;;i
评价(jjl的评价)
. P2 ?- l5 y  ilet j 3% X7 H5 E0 N8 m1 q2 P
let k 4* R- k8 ?( m5 _
while[j < trade-record-one-len]
4 _' h& \, G% ~; K- P6 n( Q[
6 t9 m) s' N3 Z8 K4 b; J4 M# ?8 rwhile [((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
' r* [  ^& e, v) G% t$ e! }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); y) p+ ]2 C- o5 h. ]
set j+ X6 F- ?9 q/ a2 J
( j + 1)
+ ~* }2 [( Z; h/ V& J
]
$ Y9 C% Y) J+ j, x- w& V5 yset [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 ))
" h3 @/ ^% q1 j) n3 v; e' l' F% u# W1 a
" j! s* G7 u5 l- }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ o+ ?6 y& Y* i# ~5 L3 F& v, B* J
;;
及时更新il的评价质量的评价
) F7 l8 ^* W- \8 O. `$ Q5 lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- T4 r* v3 @( u0 ]& `7 d
set l (l + 1)! z* S# c! |' g6 j* ~! h
], Y5 l! C8 o9 B- R! a
end
+ Z" O, n5 s# l" U6 _7 z8 n  z7 I9 v
% S& s: Y: _2 V1 U- c+ zto update-credibility-list
7 l% o- C( o3 r6 l  h5 Jlet i 0
/ i6 A' x; ?" l3 F# F8 S$ m, mwhile[i < people]' |" H3 Y. _0 u: l9 e0 e
[7 j2 i; l9 ~9 L% G  F" f3 E
let j 0: a# D/ G. _- m5 k- E3 Z
let note 02 p9 C/ i$ J# F' W
let k 0* u( z2 r0 ]" h+ k) q6 o
;;
计作出过评价的邻居节点的数目3 [2 I: D: m  O" T
while[j < people]( W0 E4 T% l+ m- X
[
/ H, z; C' J0 u5 ?6 [1 P: Sif (item j( [credibility] of turtle (i + 1)) != -1)% q1 B; T* `; `% ~. X( |8 u
;;
判断是否给本turtle的评价质量做出过评价的节点6 O" v7 U3 d; |+ Q3 S7 o2 |
[set note (note + item j ([credibility]of turtle (i + 1)))6 d0 E. v0 Y2 H. V
;;*(exp (-(people - 2)))/(people - 2))]
  @6 d7 j( ]& s8 g( Z# b7 N
set k (k + 1)# Z8 t- a3 n2 O4 B+ Q
]
; ]) g! x, {7 O% r* kset j (j + 1)( f1 b- `" j7 i) J
]$ T6 |/ Z& }, ]6 Y  o# \& I
set note (note *(exp (- (1 / k)))/ k)
: h% x+ h  S1 k( w+ m0 R1 l: \, C/ Pset credibility-list (replace-item i credibility-list note)
9 |, s3 Y; @4 i& T- wset i (i + 1)) n1 w! e! l5 a& c9 V
]
2 z+ Y! R9 Y8 l* send
9 g/ m: h; _1 u' [0 ?+ R; T; Y& s1 f! }$ o3 H4 A1 X8 u
to update-global-reputation-list1 l# Y. n# M' i
let j 0
- E, Z' ]1 E7 E1 y) C2 n3 i6 ewhile[j < people]
1 e) h7 w) \: r6 `0 L; ][
8 ~# g: p( Y3 Y/ Blet new 04 s3 X; M! i5 _, ?2 m: Y
;;
暂存新的一个全局声誉
: m- W' h% e" T5 H* @% z9 L% x- ilet i 0
6 c4 U  N8 W" g! X$ m+ a2 h2 Jlet sum-money 07 c! C" A) H% X; ]- E- i
let credibility-money 0; \- j- d* c4 l% g; B: w
while [i < people]
8 f# ^7 N" ~$ N1 `4 |5 e+ O[+ \8 ?7 |  P! L1 [, E+ T7 S0 Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 D- P2 j/ k2 E$ v
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 p7 m6 a7 P3 Nset i (i + 1). P) D3 M7 I, q2 v" J0 W% m
]+ [; O+ k/ M0 C* @
let k 0. z- b: w% y, f& ]
let new1 0! Q5 S& \% E/ U2 [! m2 x
while [k < people]
/ K0 \& }' X# y0 t[
" `5 ~4 U& [" [  U4 Sset 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)
2 s3 I3 f% T+ R. d( U5 nset k (k + 1)0 ^8 p8 H4 Z. a7 y0 o9 e# K
]
) g! o( @9 J  D. s, Y" Y0 yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ v! w3 y2 _" W* J1 N+ d3 Nset global-reputation-list (replace-item j global-reputation-list new)
5 d9 N4 M$ I; u/ I# r. B# Z8 r2 {set j (j + 1)
! U& r; S, T) U: A. E7 g# P# r]3 D) ~6 U. c  K" v& O& T7 ^8 ^. {  d
end, }* m  v1 D' ]" |( \% y% C4 }5 M

& B5 x* C( k! ?, `9 Y/ k2 V5 Q3 s6 X) A4 R$ u( p3 z

% k8 m% r3 k% V" G/ U. V) Ato get-color" v; w0 {, [, F& L2 ?6 y- s

' d2 g; ?5 Z% L  @; Oset color blue

7 W0 C: S" n. Gend/ A- l9 v0 C. w3 C

+ C/ f2 S2 C. a$ W0 O: N/ S/ jto poll-class
9 P( U. m# F& N$ @& @" ]% uend
* w/ z% E) ~3 }  z$ u2 d' y4 a+ q0 f  g3 j% U
to setup-plot1
7 |+ |" q$ O7 B% q% k
, g7 Y" d3 \( ~5 R3 tset-current-plot "Trends-of-Local-reputation"
3 P' P. J8 c$ r% [, f8 k: U* d
7 u" B9 ]* F5 G% j/ H% K
set-plot-x-range 0 xmax
% u# y, a7 F) z! l

2 c% b4 B* V1 ~+ c, J7 s4 Vset-plot-y-range 0.0 ymax

! ^+ F6 V  i- ^/ uend5 w& V# C) U0 p, L  E
  K2 ^! a) P$ d6 |, A' C# G$ ]
to setup-plot2
% y& P4 ^3 U2 D! W) l- E4 ?& }5 t0 H) S/ L3 }! j1 g
set-current-plot "Trends-of-global-reputation"
, V& ]6 B6 Q! i( m8 ~4 s& Y

; S6 t' ~" \2 C* X0 w- E. b$ P) N/ K. Wset-plot-x-range 0 xmax

( O7 ]$ u% k. w" l" @& h+ _6 w4 z1 N( U7 b- W' w
set-plot-y-range 0.0 ymax
. O; F# O+ `3 R2 L7 p$ U) r2 ]
end8 P! t/ a5 e% K

$ o! B; y  b6 D8 l9 A& E, Uto setup-plot34 p$ n9 Y9 e( \9 Z, O
: J1 i; q- o' |
set-current-plot "Trends-of-credibility"
  ~  M* K+ m9 `: W& C
+ x& I8 |: {9 G# p4 J9 I
set-plot-x-range 0 xmax

0 K( R5 R0 L& _4 V4 l# S0 c! h8 ]7 F. ]: {8 j8 W
set-plot-y-range 0.0 ymax
: J" P8 _' P8 B, s3 A% X8 z
end  Y# i. V6 e: z6 o' Y
2 O" h7 I' \$ q( g) L9 B
to do-plots% F" g7 M% {6 f! N  M, V
set-current-plot "Trends-of-Local-reputation"
( H, u* ~5 J1 H2 S+ \1 X0 aset-current-plot-pen "Honest service"
% |' V# V" W" J  [( f1 [end3 l9 T) {/ {# M- J2 ~( o

! U. I" f. r6 e[ 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.7 c) X! s, e0 i0 b- z1 v4 n

% \3 Z& J% v, o" Q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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