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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:/ j' o  M1 `3 B* ~
to do-business ' ?) W7 r) A$ W
rt random 360
$ a8 y! C1 w2 V/ ` fd 13 b' T# n  o8 Q! T$ G
ifelse(other turtles-here != nobody)[
. ]( U8 Z+ M8 p" R0 C) L4 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.2 T% C2 N  u8 Q* a& l( Y3 R  H+ {
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 g3 h' p- o+ Z+ C. A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 o7 O0 b8 ?; L- q6 q' E' [
   set [trade-record-one-len] of self length [trade-record-one] of self: B: n4 y/ _9 |! x
   set trade-record-current( list (timer) (random money-upper-limit))
+ F, w3 O  }9 M0 a+ O1 `) z8 N
: T3 v9 a: L7 c问题的提示如下:: ^. R3 g% U9 a, R6 \3 y  T
+ o* \& m6 M' Q- u) e% c- }
error while turtle 50 running OF in procedure DO-BUSINESS
) Y4 u( I$ m& r/ X+ e+ @+ d  called by procedure GO
" D- B) ]# Z: D7 I/ O! }; fOF expected input to be a turtle agentset or turtle but got NOBODY instead.
% A. q+ y% g; A2 s
(halted running of go)
2 C/ K5 \4 h/ z" `
, B: B  a7 V6 u0 M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~~
+ t1 ^7 {- s! n  g) 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
8 D: H7 k1 }; w- R9 c; Z0 sglobals[
9 x4 J! b4 z# w) K: Vxmax
1 {! M3 u4 P  Eymax
' X" Y, B  P4 N) @: R( g8 [( C4 Aglobal-reputation-list
9 j" Z# |' N2 b% D! z: J- q5 l# m+ c$ Q# x
;;
每一个turtle的全局声誉都存在此LIST, L& a; O1 ^5 ~( `! e* `
credibility-list- M+ z0 t. A# X5 [! Z, Y+ X) ^
;;
每一个turtle的评价可信度/ ]/ Z. d) d( F6 `% w' b
honest-service
' u4 v, b! v8 p: F* Funhonest-service7 m0 ^% u1 F2 [* ]; t: U6 `
oscillation
8 A# _6 c  }* n, b! Wrand-dynamic
  I  l9 d/ h% M. S0 n( i: ]]
6 \. T) C+ U2 B* q6 P; Q% O+ d) T7 \" d! u
turtles-own[" i) C9 Z! g& F+ s
trade-record-all- c1 m$ A, @% z, }) U/ I
;;a list of lists,
trade-record-one组成% `( U/ W% i( z+ I
trade-record-one7 ~& ?2 k7 t2 h  E$ x. K& C2 t
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 m; Y3 V2 I1 J+ m- C- I

! R! ^3 o* q, S( V; m4 W8 I1 c;;[
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]]' N. _. `% ?  }4 D' B1 h
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]
: v$ F' Q" c7 K4 ?. `. a6 ?$ Ncredibility-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; y: _4 N. ^, q1 {' t
neighbor-total
& K7 O+ K6 e* J, ?9 R6 |5 l;;
记录该turtle的邻居节点的数目
5 x0 o; I, L3 r; @9 p( ^- z& A. ]trade-time
! M$ \4 P5 k% V5 V  y1 L;;
当前发生交易的turtle的交易时间0 U2 |3 q  i, s
appraise-give- Z) P2 ]" h6 ]% y# A
;;
当前发生交易时给出的评价
4 Y; f" u4 r& f2 P1 V% aappraise-receive
; T0 Y) d/ O+ q4 B8 H" \;;
当前发生交易时收到的评价* {: L& @" a4 _+ {
appraise-time# B% ~3 E# f6 q
;;
当前发生交易时的评价时间8 i: Y7 Q4 ^/ M4 H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
& P( ~/ W9 J: E* F1 v) s( g! ltrade-times-total
& g/ W. z# @6 R+ i; |;;
与当前turtle的交易总次数
! ?2 I1 `& s" ]/ e+ Qtrade-money-total  i" O# k" U- C# Z' D" s' F
;;
与当前turtle的交易总金额. v. l3 m5 Z9 H) Y5 y+ x
local-reputation2 Q* \* q4 \+ w$ {* L5 b
global-reputation+ d% v5 ]: ?$ c0 s! ^& M1 T
credibility7 P# \! c2 ^8 c) o/ T. c7 Y
;;
评价可信度,每次交易后都需要更新! h0 A: Q  ^( s
credibility-all/ Y& w" G3 m" O9 h$ P5 F
;;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0 V: h2 E+ G6 ^  p7 v) b' T
' ?6 a1 |- J' j: R1 d8 q
;;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
+ `8 i( x$ k- d: i8 s# l/ w2 ocredibility-one/ I; d; e& G, c5 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
& a9 f5 M" H5 u6 O# Mglobal-proportion
, Y. w( ?" v( r; @6 Ccustomer  x. e8 M( k! A0 k- l: f
customer-no
" l5 ^+ ]) X* l: D' m  ?trust-ok: i) R. L* k' P$ X
trade-record-one-len;;trade-record-one的长度( ~. K1 O* _. u1 q" h# J# Z
]
# h4 a; k$ h* `. ?/ {' Z; ?: I
9 u& F1 L. Q, Z  @" W;;setup procedure$ Z2 R8 h' J+ ~& [

$ c/ h- t' x& e% Dto setup+ N* {$ a/ L( }, q6 E

% d9 E- I4 {5 z7 |& `% C* \ca

1 }/ X- |; X4 {9 C1 K8 Z1 |) A7 N/ ^3 @
initialize-settings
9 }: S1 i: {3 V% n9 y7 y: ~
( s  W$ z+ s5 V; ]/ V! k4 Y4 C
crt people [setup-turtles]

6 q$ V# r5 }( Y6 z; g5 l
. j- g4 M1 G( k" ?6 e5 r! Wreset-timer

, x& B; R) A& T! k$ @
6 U& j3 ?# I/ {) k; |. W9 e1 A$ J  jpoll-class

1 [- l8 ~: s/ J  E$ A# I8 w" u$ b. K9 ?
setup-plots

, @) K+ L: h; a) s# L' l6 u! v3 V3 m0 O2 \% h  x! d# R& P
do-plots

; L% \* U: u& d" `% v& iend
5 }0 f) D; o' h2 j+ p; {! L* v+ t7 c$ U7 n; V; d
to initialize-settings
1 L  U) D) |- J; y2 }6 T4 k# |+ s( Z" J) [% H$ ^) p  ~$ F
set global-reputation-list []
: Q; l+ h  G; }; C
4 E: g! d) ]4 A  y  W
set credibility-list n-values people [0.5]

2 L; q0 D5 `( q* T! k. V0 Z4 e" i" b- C
set honest-service 0

* V* l, s% H2 p, ]) C$ ^, k) j, |5 C, n2 }9 ?4 D( S) n0 M
set unhonest-service 0
# b4 v8 a4 R1 i7 b! f6 t

4 F* [2 R- v' iset oscillation 0
. z1 I# y3 v( @% i& d: O

3 W2 E$ g9 o$ i3 L# T1 A5 o8 h. gset rand-dynamic 0
- ~& s/ k5 J( p
end
' u- M) u/ u. h2 X5 k8 Q8 a" O; I  W+ A# i: ^6 H5 o
to setup-turtles
6 N! T1 K, j+ x9 iset shape "person"
- D6 I+ S6 S$ Ssetxy random-xcor random-ycor4 V5 a0 W- v- H5 n5 ?# a; F
set trade-record-one []; I# {: ~8 _2 ^

9 p  U6 P3 G! a& Z( Y% a4 X; Pset trade-record-all n-values people [(list (? + 1) 0 0)] . i7 j/ q- ^8 `( b

7 n+ i" D- Q9 X3 J. @set trade-record-current []3 Q( D8 e& I3 u
set credibility-receive []! {( w; ^0 }7 D3 r' \5 D
set local-reputation 0.5
( Z4 z0 [+ T. @( I* c0 Sset neighbor-total 0
/ }! O$ ?. e6 o; R; ?1 {set trade-times-total 0
1 T! V& b2 w+ v; h/ l' X# sset trade-money-total 0
) `/ k' m4 R3 \! Jset customer nobody
9 f5 I! |4 m3 R/ D1 k" V9 M; D& Pset credibility-all n-values people [creat-credibility]4 [- p! g8 t6 i& e
set credibility n-values people [-1]3 X$ L% t, f6 }
get-color
7 r+ R: m* X; `3 P8 B
) q$ s/ F4 x' O1 C, w7 O* F& S
end
4 y* A" X; j( a- B) E" V9 ?' c6 @+ l! j" z5 M* S7 p, G0 x! S
to-report creat-credibility
' q' l% q5 u$ areport n-values people [0.5]6 X& J) \! O  U! F6 X
end
6 B- x8 C) k# v: H9 u5 }( C' f- b) s  S
to setup-plots! i8 z5 j# ]( O3 D6 F, @

! Q, R- ?, }) ?0 Aset xmax 30
) x5 P8 K  O; w& A( i
( h  k# _) R) N' O8 u. c& `
set ymax 1.0
$ C1 B  D& e0 w7 L

  }* q4 Y, L- Q/ G8 H; Aclear-all-plots
4 R* [$ R7 y4 }. ^# `# ~( d
& V" ~3 K; S, ~" H4 \9 X" F# D
setup-plot1

+ {/ M' c! M$ z0 O
" ]& a9 x8 R9 |setup-plot2

+ z: `6 T3 S4 Q  s/ H' G7 Q
) B2 a( g2 P1 E% Hsetup-plot3

3 `' C3 C+ s+ f+ b7 c# Send8 v" \2 }, w  p

9 q! V' a2 ?( j, C5 Z+ j, q! {9 o/ _;;run time procedures; N: g2 }; x4 V+ |

- o. V$ c6 B* h3 `8 Ato go( h: ]+ a. c$ W3 l! \

* A2 q7 [. Q9 |& U4 Dask turtles [do-business]

. d! c- j' ^: zend
- N1 F# N9 e0 h/ t
0 t, n& x- K" P9 m: H8 ^( R' qto do-business 0 @8 n* x/ u2 I7 r

! N' o4 j8 u/ M! D) ~  S7 \, ~9 c2 z5 K
rt random 360
& O! c4 e4 [% {

& \& f* O- o0 gfd 1

3 ^2 S! \% U, q
3 d7 @# x: a+ ~( ^6 Pifelse(other turtles-here != nobody)[

) U, _/ y% a5 B( c- y: P* }# \5 X* w% j& W; H; s/ w8 R- O
set customer one-of other turtles-here

3 j  r: ^5 i9 ]9 F% p& P6 K$ A6 e$ N7 l; X
;; set [customer] of customer myself

! d8 M2 u+ H1 O1 s+ [  w( F- t9 y& J& B7 M3 n
set [trade-record-one] of self item (([who] of customer) - 1)* v+ W* }- W7 |
[trade-record-all]of self
+ ?# i1 m; U5 X& V9 E7 Z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, q9 g. s$ l. p, K" u
) H, f8 b& N, ^  E$ W# sset [trade-record-one] of customer item (([who] of self) - 1)
) r" C+ V. N$ ^& I8 P3 }: o) T[trade-record-all]of customer

& I' I& O. ~4 A# L) L8 W0 l8 i/ ]  B: \2 o  \$ R' j
set [trade-record-one-len] of self length [trade-record-one] of self
# i) f4 |9 k+ u9 |- S1 e; a8 f" _
; g+ Y- }( O# [1 j" A8 O
set trade-record-current( list (timer) (random money-upper-limit))
4 o) f8 b/ w& ?, M
. L! N" @9 h+ u; a5 O3 g6 V$ Q
ask self [do-trust]
2 ^5 z% D* G( F8 V: i! W) j;;
先求ij的信任度. L1 `; S3 q" D

% O" Z8 N; E2 r6 Y  U( {& f) uif ([trust-ok] of self)
3 u% }( E/ v& O$ Z! R;;
根据ij的信任度来决定是否与j进行交易[9 P# E$ u2 @, y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) K- `7 T2 O) m

3 g5 B  u  {) {8 R' i[

6 P: K' t, `. z" w  ^- Q1 Y. j' b/ _
do-trade
7 N0 h& b* I4 ?2 d- [! o! y" ]

. }4 d1 ?4 Q, L5 e5 r8 F5 p1 [- Hupdate-credibility-ijl
; M, F+ L& y- A/ b0 I( A
/ k! [9 |6 z& n% }) \
update-credibility-list
* @9 F. O3 H( A1 f) U% K
& F+ w: X0 W6 M; a# c! Q3 t

- z1 F( A% I2 ]* w  U* N2 o" I1 Hupdate-global-reputation-list

! z# |' h" y! {, h! U, s1 W8 F
# p2 K7 M- F2 mpoll-class
% N' a. o& H$ ^; w. d

2 w- |( Z- R# ~$ @* Sget-color

9 m6 _. }3 S& E6 T# X4 [+ k
6 [! }5 F6 ~' P& s# K: e]]
( ?  o4 c/ K2 d% b6 D4 Z' x. Z. V' c5 s9 [. v) ^5 g
;;
如果所得的信任度满足条件,则进行交易
# y  N7 y0 m: t0 i  e% i
/ a" O) j5 B: u- L2 b[
0 |% ^! S' z! t6 Z

, O3 @; L2 ?- Z$ l  V% irt random 360
: {# k( K4 {" U3 g. S+ W; X; f

' }  q3 s' @7 Qfd 1
* k; ~% S% \8 u' A9 c0 z) L

$ l: b  D7 z1 f: I. h6 c/ w- {]
  c$ J2 g( `; {
$ k5 ~6 ?. x, f& i: F& [# ]: }
end
6 \6 C) `3 d5 Q& y/ e) v3 V

2 n+ j! ~$ F) c& ?( xto do-trust / o5 d6 n5 z: m$ G% K0 Z
set trust-ok False& y! ?' m* \* U* y; Z
! o( E- R! f; P8 q& j9 T
0 g- A6 o9 v$ S# J
let max-trade-times 0
0 y: K% n; U4 e5 d* c2 Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: ]& D! B/ i! u0 P
let max-trade-money 05 c' i; m# b+ f3 d9 P. ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 H4 H" s$ H- {2 b: i9 q9 `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 I9 V, }: g8 H7 ?" e, y/ H

* S7 o& }$ Q2 n9 c! J- \. Y, Q4 b

" t* L+ ?0 E: lget-global-proportion
" r& I- |4 g2 q! P/ o) |let trust-value
9 Y) Q3 O  G1 ^( u2 H1 [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)

, ^/ j! }4 D% Y8 f: hif(trust-value > trade-trust-value)
3 i% @( b* l2 b+ A. K9 s/ `+ m7 I4 ~[set trust-ok true]
0 E. b  E/ `+ N! }3 Uend4 N1 H! ~$ z; C4 T

  G/ I+ `" f: ~, s' dto get-global-proportion
$ i% ]( [0 K  g( Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 P/ P1 Z  p$ i9 S( ^- p) F* _
[set global-proportion 0]8 b. G& k$ @+ g& \# \1 A
[let i 0! |0 t* d. ]$ ?; y# k, }
let sum-money 0
, m: w1 _5 c" W6 C% twhile[ i < people]( O! S0 u! x2 n5 L. |- @- C
[9 f% K3 Z5 z* m
if( length (item i9 h: H5 f& _( x+ t- C, p+ e
[trade-record-all] of customer) > 3 )

: I4 h( q5 \0 o4 F[
: E7 W3 C9 R. f* G, _4 G- hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 Q8 H$ t* \+ W' w, c3 P1 ?8 O]
3 {+ {$ J. A# K3 R, |8 b5 ?* \]# W* C, S1 G4 h! p. J
let j 0
$ ?8 G- f- K. _+ ]let note 0, a" {- ~5 U* f- j# @3 I, z3 H
while[ j < people]
/ B, C1 }! ?+ ^( M[
4 ^+ a$ Q; n' n( i; j( \/ Hif( length (item i
7 V# |; g4 T( M3 |3 T* P9 M0 ]% \/ ~[trade-record-all] of customer) > 3 )

9 V3 g/ y, t; P8 x4 ?3 j( o[1 Z! J/ u; f" R1 B
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): g, }0 z5 N) v5 D/ Z) A* {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: S& |2 C/ D) q9 w: j5 R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; c( [$ H8 }7 F
]$ p( Q* d( N- ?; c6 B, w
]5 [( b( f" }  y5 d6 j3 p
set global-proportion note
; O" V' }% I$ G, h. s  Z% Z]
9 E5 F! G! h8 ]/ W! Y8 s# Y/ C. Cend$ j, a" @7 Q$ J6 m
* M6 ]7 P  C6 x
to do-trade" d' k9 ~! d& G# |5 p
;;
这个过程实际上是给双方作出评价的过程2 H, g) O/ u% ^# o+ y% s. V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, H. L1 ?+ T( Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 @& w- A7 \/ B- @& \/ j9 T- i
set trade-record-current lput(timer) trade-record-current7 |) Q1 U  H: ~# m
;;
评价时间
6 o" f9 G2 |8 N! Fask myself [
$ `+ b% O8 d% K* H* U& uupdate-local-reputation% K( b1 j* P# s% l' F# R
set trade-record-current lput([local-reputation] of myself) trade-record-current
' Y4 r! }9 ?; m]
. t+ G7 y2 L8 t, cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: K, B6 q# j& ?0 D7 W0 J6 h  q3 W
;;
将此次交易的记录加入到trade-record-one1 Z; h7 ]3 q: ^, w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), J& H0 ~4 r. g$ J. _( \7 i; x$ B
let note (item 2 trade-record-current )
3 I- \0 D% t& D: b7 `set trade-record-current
4 f, N# ?% u& O2 i(replace-item 2 trade-record-current (item 3 trade-record-current))

5 X/ k# f2 {% v2 gset trade-record-current$ w. b! a( u7 i6 s
(replace-item 3 trade-record-current note)0 x3 o3 l& L( t: c" L+ p
8 Q% e0 g( W6 j# m& t' ?5 C" O

( ?! i6 F' L# b/ I6 A% C/ Task customer [+ t, ]7 c2 F7 S: j
update-local-reputation
  }% p' I; y. Iset trade-record-current
1 Z2 V7 |& H* I4 R$ I* e(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, Y: u; @' n7 L! d  p7 x% y
]* K' R2 n( f7 n- K
: g$ s+ c8 {1 [/ [5 I# V6 [& p  @: Z
2 I* |2 f+ n1 N5 R7 q6 Q. N
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% I1 t6 n# x1 h+ \- c0 h$ U5 C( K0 L

: i' E; |4 O" D) Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 X8 B0 s/ u: o$ k" a; @! r* _' y& y;;
将此次交易的记录加入到customertrade-record-all7 z( @$ r4 Q! f/ C( a9 L" ]
end0 _; T) K; s; n( T. l# n0 t
" |# d) c: M) g7 j
to update-local-reputation
. g% d5 \0 U6 h2 M) qset [trade-record-one-len] of myself length [trade-record-one] of myself5 ~1 }$ ~* o% J! ]# L7 z
9 `. u8 v, l' N0 g% s* Q6 |

9 V4 S8 r- E) p" M- x;;if [trade-record-one-len] of myself > 3

9 N) Q- K: k" o# ^; Uupdate-neighbor-total
! A/ T3 ?6 |" X;;
更新邻居节点的数目,在此进行
/ W; }6 R: R* m" z8 Q* tlet i 3
* Q' M1 C& v; [7 d% d6 j, jlet sum-time 0
7 |* v- }6 o1 i6 S6 [! Hwhile[i < [trade-record-one-len] of myself]
4 B0 n9 u" w2 f  W  C[
9 O1 N1 N! t. l6 b7 c& t# ?set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! D) e( _9 |; q- M: q9 X( Eset i
7 D3 e! @7 D, L  h& \( i + 1)
/ C1 ]7 a: x7 ~4 f9 o" u9 X
]
( i3 ?. d/ T$ w+ l) ilet j 3' P- Y9 K" q& \3 L* a
let sum-money 0# G# {8 d9 I3 o+ X6 i
while[j < [trade-record-one-len] of myself]) L# {; e1 i" G& Z7 H* w" ?
[
9 Q0 I# s/ ~6 \, 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)% o! [2 A+ A; I) n; n
set j
& Z7 T2 m$ H8 S! P6 R% H/ S( j + 1)
- T+ G: g- ]9 D' L; i) L5 A7 x
]
; @, T9 `9 j0 V2 y, u9 T5 Flet k 3
! K- A9 x& n( mlet power 0
0 H# g, d$ }5 r, O4 vlet local 0
. ]1 I- m2 O0 D( hwhile [k <[trade-record-one-len] of myself]
  o- j6 W- p# g[
! e' Z+ M3 f0 T4 W8 s2 i4 lset 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)
3 o, e1 |5 C" J$ Pset k (k + 1)
) c- Q& }$ R7 t/ B, n3 j. ^3 e]5 Z' m% a; _  p' Q* B/ h4 p
set [local-reputation] of myself (local)7 U+ \& h( F* p/ A4 v* N
end" j0 U% M# }- ?; f
1 w4 G- Z( @* {# v1 M3 L
to update-neighbor-total! w- I' e2 J7 `5 N& X% s, \0 a7 H
. U1 Z- G# R  e4 }0 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 g* @: O5 \5 p+ c  E9 g3 H) q7 W& c& Q/ J

' S( g, B6 k- G; L& _end; \4 \1 V- y! e8 \+ w
: Q" E7 x1 p# r& B. v
to update-credibility-ijl
& L8 z( g1 ^' U; M" h9 S2 v* I3 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。
, d8 V* y1 F3 p" w" M+ R' l. Mlet l 0
) P- Y, G8 [, G1 |2 y6 z( ywhile[ l < people ]( c9 m9 D; d& ]4 {+ S
;;
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8 \/ G$ |& Y3 [" d6 G
[9 {# l: w& F7 Z# L5 q; \, c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ `% K: z0 B4 n1 X
if (trade-record-one-j-l-len > 3): ?0 ^) v% t' t: b+ N
[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
9 u) q, V7 i8 s2 x9 P* ~/ W2 b* Klet i 3
# [& M$ ?0 U( e+ j' E: Nlet sum-time 00 |- o3 M$ C8 K; d
while[i < trade-record-one-len]
. R7 z+ k' A' M* ?6 m4 u& q[9 P+ {. y' i9 e& T4 j+ a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 C/ H1 @: i2 k9 ?set i! w3 \. ^$ V6 }  v+ S
( i + 1)

7 r- |; U$ ~) f' `) o8 e]
( P" d& v! `/ w0 w) Nlet credibility-i-j-l 0: E, D! e8 e! t9 s  L
;;i
评价(jjl的评价)
5 I4 ]% Q" Z; Z: R) `% |let j 3& p0 ^3 t4 ^6 X+ O
let k 4
# T5 v, Y, Q% `( }# |9 Iwhile[j < trade-record-one-len]3 F- Z! F" m* g8 Q
[
/ h+ R1 v, }8 B8 q! @0 hwhile [((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: b  _& k5 d5 J* \# x# G
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)
" B. z/ Q# P4 Kset j- |5 ^0 E- S5 `2 M& {0 N8 i
( j + 1)
. e: e5 h" @: x  }# V8 R
]5 k! f( `/ Q, W6 y; T
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 ))
* g; [' m3 c6 r+ T* Q
& k+ m" O) |6 b! ^1 f4 k  i$ s, ?
. t% v- y! o' F9 W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ ?, Q# F8 H3 \$ I;;
及时更新il的评价质量的评价  v' F& E0 z8 g& F( p. {4 [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ g9 y1 y& Q, W% A! o  i- P% v, Z
set l (l + 1)
3 z$ r' C  }9 ?# X7 r1 K5 u& N]/ A( t/ B  K; t  b: r+ d5 G9 D
end
) f" I$ B0 b6 `+ [# S3 w* g  _
- U! c/ S0 }+ uto update-credibility-list" T  y( U" ~1 C: A- E
let i 0
# o5 u, E/ Y+ F3 p; Ywhile[i < people]+ k: j- M5 P: J( c' h  ^7 o6 M- t) W
[
/ ^4 _' j7 `' _7 X' T/ [let j 0
% e+ Y% p3 y2 M, s3 l, g( Elet note 0
( c1 ]2 T; j' M# N5 K7 Elet k 0
  \7 a& c! F. @. G( H0 g& ~, G;;
计作出过评价的邻居节点的数目
1 D7 R$ ]+ H3 v7 R. u. {$ X# \+ x/ w5 \while[j < people], P4 J4 }# O  ^1 k( _1 l$ O( V
[
7 A5 ?' q$ {$ m0 A- iif (item j( [credibility] of turtle (i + 1)) != -1)$ V# d$ L" D" D1 t* ~9 e- ]8 ]
;;
判断是否给本turtle的评价质量做出过评价的节点
: Q$ s( A2 @/ p' E+ p[set note (note + item j ([credibility]of turtle (i + 1)))- ?0 I0 t2 D4 C2 S$ S* D$ l
;;*(exp (-(people - 2)))/(people - 2))]
7 V6 I1 M; N! Q
set k (k + 1)# q8 s( m0 I; O0 M
]
( h/ G! u$ y* B# gset j (j + 1)
. |% r0 E5 E/ q  X0 {: ^+ j6 v]
6 ]4 \" b6 L* i2 y) }; X2 qset note (note *(exp (- (1 / k)))/ k)
( [) {2 ?5 V2 r% Aset credibility-list (replace-item i credibility-list note)( i6 O, S" D' q+ n- J2 V2 W& s
set i (i + 1)- A8 |; G! f) G8 p0 W
]
) F" Q+ X2 K4 Y: [6 F1 aend
; o7 E( q4 o8 N  K. F" ]
4 P: f1 u+ F- J/ o+ z; x' eto update-global-reputation-list
% r. K2 o4 y8 _' E7 xlet j 0
2 ~# i$ p- F. a- r; M4 x  I9 W  ?while[j < people]" M+ T+ K. B0 Q5 k* J  ]
[+ M3 \1 }1 g& ]6 a/ [$ _
let new 0) _3 Z1 j# D- j7 U' O% w
;;
暂存新的一个全局声誉1 y$ C5 S, k; j# L# H0 T( g/ F: u
let i 0$ e- N( z6 Z3 d; m/ S* p
let sum-money 0
( I; C9 h) u$ d; ~let credibility-money 01 a% T. o$ c% f# ?" @& g  o- ~
while [i < people]
% R5 \/ [6 C: \6 ^[
2 ~7 H, N  @* D5 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 x5 h# ~& {3 e- D) Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, l4 d2 g0 S! x9 qset i (i + 1)
# l8 o5 ], y5 D" u  }' P9 ?]
4 m2 }" I+ ^/ Mlet k 0
$ ^/ n' b( ~8 F0 A' L  }2 Alet new1 0
+ y" u; N5 V( c/ c0 X6 ^while [k < people]; G, O5 m3 h: r" r
[
; ?) d6 N0 t5 I2 Rset 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)
. ~8 |! F: W/ Z& R( m$ ?6 Fset k (k + 1)3 ~4 a6 G, ?# G. v  O
]1 G# x/ x, B* w; t
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" q" \( }3 F6 J  D" S; }, D9 K% Dset global-reputation-list (replace-item j global-reputation-list new)
3 i* R5 R. D4 S# z7 S) T. V$ C+ Xset j (j + 1)
7 F* x0 }5 _! K1 V9 E]
2 x+ b* `  Q  o6 cend- a( h2 C4 a5 D/ T" x+ t) B+ u6 m- I
. U+ w  c, \3 M/ ?5 l

/ ]7 C' E" F% W, e; [+ `1 R
& K. |: g$ H* j9 x7 p& qto get-color/ `* K! w, w  P  T1 l

+ P+ Z  X! C* U+ N2 q, mset color blue

8 g. K/ c' z! T: U! q. a: jend
6 J0 \% C. A& P& P2 w; m% B7 X6 p/ e$ a" [* u
to poll-class
5 @* d0 Q# o% Q1 C% wend; Q$ n; }  V4 c6 P
  N9 A( ?' R9 G$ w
to setup-plot1: ~( U' b( b- t; c
* x6 M: w" S7 q* ~# ^: v
set-current-plot "Trends-of-Local-reputation"
+ h" i6 y. L6 _

- q1 m; x# o! H6 A( s! A. r) Aset-plot-x-range 0 xmax
/ y7 J* t' J5 Z( q5 k* R$ [. q

8 [! y" w& z0 _) d4 u1 \* wset-plot-y-range 0.0 ymax

: |# O/ @, W) X, j" gend
; o% s2 ~6 h4 V  u
* H' ~2 @' r' O) bto setup-plot2  P6 @3 S) b) z/ ?, b, w
/ T& D7 y# W9 e9 c' A7 l* _
set-current-plot "Trends-of-global-reputation"
9 t6 T( l6 o! w2 m$ B/ F1 Y" H
! n+ `- Q* x2 E/ l* [
set-plot-x-range 0 xmax
% u: O. y8 i$ Z0 C0 }' l+ e/ Y) X

0 f) T8 d" U, c5 a6 f+ iset-plot-y-range 0.0 ymax

% a$ L" q1 e, s# m# _9 @end. `7 ]& O6 U7 d3 N
! W2 Q' ]& P6 [: Y& X
to setup-plot3) o9 e1 b8 s* J, u
. W% j) u* U$ h& ?# S/ u
set-current-plot "Trends-of-credibility"
4 d3 X6 a  C/ w; d' u

# k' g6 R! r) w' c! V4 |set-plot-x-range 0 xmax
! k/ |5 g5 Y8 I6 p
9 s# n( p" f4 |4 q
set-plot-y-range 0.0 ymax
( |% _3 v0 z7 z& {1 Q& w: |
end: m  ], {4 E5 m5 |
/ r' d$ U- Z' v& u6 M  \! M1 W& e/ c3 M
to do-plots
* F7 H0 M+ s+ Hset-current-plot "Trends-of-Local-reputation"/ ~3 L" G1 J" p7 D
set-current-plot-pen "Honest service"
- y& t) u* v5 Q+ l( @end
( x6 v$ G" c/ d6 X. i4 v( c% N' t( p: m+ A" 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.* e, p. G" t/ w4 g" T
' ]3 D) i. Y! g, [  @% D- C
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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