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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:
) F. @; y( `" U+ t3 ^* Tto do-business . c6 J4 {9 k7 }0 h# a
rt random 360
' R8 m% F1 K: n. B" @ fd 1
. T1 w5 o9 c7 N& H& {; i ifelse(other turtles-here != nobody)[
  y* P/ o$ F6 p1 o   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.6 ?# p& X7 s# s( M4 ^/ w! V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , U) ^- J+ S# M! \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 E- ~/ t+ |0 D; t2 P$ m* y8 ~, c) P
   set [trade-record-one-len] of self length [trade-record-one] of self
3 s/ g% M9 h2 f) G   set trade-record-current( list (timer) (random money-upper-limit))2 R1 T; U8 o0 O7 E8 F6 o5 w* D) H
0 j) y7 x5 A7 c8 P
问题的提示如下:
" j) e/ U1 \* _
6 C5 Q* Q0 M" `error while turtle 50 running OF in procedure DO-BUSINESS
& _6 ~5 {8 I# o# ^: P& e, c  called by procedure GO& H# c- x# `) F- Z3 {
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! \8 n# K6 ?5 k, G% p6 @# A
(halted running of go)* _1 k" \/ Y. C1 z/ V
' F- R+ L$ B$ o# s/ h
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
; i% d7 F' t& A4 Y3 T* w6 b' U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/ @  e$ E6 E7 [/ p' f* K# e% ^* w, f
globals[
6 D/ x! y$ E1 O# Y' t( cxmax3 j1 q2 |  c/ v4 `
ymax9 K+ _2 @( t( d( s
global-reputation-list- W0 F' p/ r- O& A" d0 n' U7 n- K

$ V% A- R7 x0 ~( A9 e2 l+ d5 v;;
每一个turtle的全局声誉都存在此LIST, C- d, f% ]) e( v
credibility-list
! ~# ^* t: s) i1 p# o;;
每一个turtle的评价可信度" Z3 G8 T& o# R9 H# c3 p& W) p( ?
honest-service$ a0 P" f( q% b6 c: R
unhonest-service0 Y. c6 w3 H# l! l4 T4 w8 j& {# H
oscillation
% c' ]9 c4 w  a: v& Crand-dynamic
2 d# `2 ^7 Q! v6 M: S6 {]" T7 q, ]) |! |% @7 T* ]: R
1 Y" l' I( c& v+ o/ `% M& a
turtles-own[
- F" B% w. r! J3 i4 k. H$ l$ Htrade-record-all
1 x* v* X7 J; `" R& v- |* ~;;a list of lists,
trade-record-one组成
9 k8 ^# C4 I! j3 p" u% B: itrade-record-one2 I: T- k& Q: c8 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
- t9 Z0 v4 |$ ^' @: F( ]) Z: d' ^' J& ?/ x4 r5 I8 D8 N8 \$ M9 e
;;[
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]]2 m5 k  H' p9 X0 {! p  }+ v
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]5 t6 y1 ^- P! b
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
  T2 P. T& s8 sneighbor-total0 c: U) _1 ]  D; a% E% U8 c: g
;;
记录该turtle的邻居节点的数目4 b' P/ y. R" l& @
trade-time4 w2 A! ^4 p3 r2 T5 O) L1 \+ T
;;
当前发生交易的turtle的交易时间5 N( E6 m8 {9 k4 U) I
appraise-give
$ i* v1 m1 Q4 ~; g& X  N6 Z8 K;;
当前发生交易时给出的评价' o. s- S( w: x, r
appraise-receive3 U! s$ d9 H. m; R+ ?
;;
当前发生交易时收到的评价
& I" ]/ e+ z6 i& `appraise-time% R1 \: L% A  O+ d; Y2 M; K/ h8 [
;;
当前发生交易时的评价时间
2 y) w; Q/ A9 i( V4 n% |6 o. ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 P- t% X* `% Strade-times-total+ s0 D8 O" S$ x- D. C0 I& G  U4 h
;;
与当前turtle的交易总次数
' {6 |  W) w  \6 F. \' ztrade-money-total
- A& F7 k3 K: O6 {2 e;;
与当前turtle的交易总金额
& T. g5 j" O' v3 O+ Jlocal-reputation
3 A' E+ E. k3 I2 H& J8 [global-reputation+ a7 J6 {( p& b/ M7 o
credibility
: b9 f$ r) B0 @- M# S;;
评价可信度,每次交易后都需要更新/ L! }. z* e, |) T) ]; i
credibility-all
9 H$ V6 m. {& C& _1 @8 {, l;;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
: }4 g, }( n- C% ?* B& A7 Z) u6 s- }+ \! [, p$ R3 l; m) X5 J7 u
;;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
) [: [' V- u7 U& J# Hcredibility-one
% O! y5 g- F- A4 p% F0 ]1 u5 E7 H;;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; i& J$ ~' n$ m
global-proportion) j" _; }) h7 \7 l& l0 Q
customer
7 P: ?' I+ B1 D, ?customer-no
# ?9 `0 q& M  r/ J% Mtrust-ok
9 t5 D3 @0 [, P; m  t8 v* ?trade-record-one-len;;trade-record-one的长度
1 I$ J9 ^5 i8 y/ z- \]- r# l5 f4 e4 N# @+ q  F

/ q% X0 P% c& X* s;;setup procedure! N% G) x4 K; ]# p5 V* O
5 M- X: s% x; k: R  B
to setup
7 ?6 q7 W! a0 y  l$ V) h# ^/ L$ }8 d
ca

, D5 q* J2 a! F7 b1 c- U) n  Z" O. N$ N* _- C) M7 m2 k
initialize-settings
( g4 n+ }8 Y3 s, I4 I  u9 Q/ [. f
* }7 R4 b; y) C! q4 K/ L% K
crt people [setup-turtles]
9 `: w# ?0 e, d, k/ L! H0 i
* i$ _1 h% ?; F, x2 M
reset-timer
* K% r& h3 N- I; D5 B
1 @  s7 c# E& c) _4 j
poll-class
" q, G' B: |) _. o: Z

( P: r+ u& m# \* w1 o7 Nsetup-plots
2 a! |6 g$ b2 K. o2 u* E  N9 s

" i  t) S( g+ D$ \do-plots
+ n2 u2 a' J3 d3 Q/ I8 l' g
end
6 c$ _% K, ?) z9 K$ \! a: _
4 e" e2 p( b+ ?2 R* r/ Nto initialize-settings' E/ A9 G4 P6 V8 d5 u# L5 q
0 a6 @! F) F$ Q6 Q) o
set global-reputation-list []

/ {0 {9 @3 g1 L/ x" N  B" U
1 T( K$ j" M& N' F/ Q# x: Zset credibility-list n-values people [0.5]

# P8 z- C( Y: Z( _. `( S" g) I
set honest-service 0

0 M' N; I2 U6 l4 @7 M# t0 u* y: ^; a8 a# P) f# X- ~
set unhonest-service 0

: F! A$ h& C: ?2 }1 }. R' m
/ A& i' y2 p' r5 f; r, Sset oscillation 0
- p' C, _4 A( i+ g0 P$ y3 |' F) \

) Z0 @% J' X$ u- xset rand-dynamic 0
- t3 U# x8 X' N* j% p0 `: z8 V
end& o, y, v4 N: t/ R0 {* x$ V
, v/ }, o( }- P4 Y7 |7 V4 i) r
to setup-turtles 6 F  x& X# a# f7 X: z
set shape "person"
: L4 t1 k) l4 W3 P, u; m. G$ ksetxy random-xcor random-ycor
$ j; I  l! _" J7 Kset trade-record-one []
& b7 y3 S0 q) Q; n+ a/ Q
: E/ Q/ x* |) V0 k
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 f0 D3 @# ]( _% u2 o6 h

5 f" w& f8 o* dset trade-record-current []
1 O( J3 t, |$ w& z+ a& U( `0 Qset credibility-receive []5 E, p4 q9 h0 r* x3 u
set local-reputation 0.5
! X8 L) Z9 ~- c( |; Yset neighbor-total 0
9 c( ~7 X/ O6 q3 ?  kset trade-times-total 0
! z- G( b* Z8 y! c9 D' W9 hset trade-money-total 0- e" }8 L7 C: A" [+ S& _
set customer nobody- F/ l& ?  E) s0 Z
set credibility-all n-values people [creat-credibility]
" c( G) F. F! c& M' C1 Z9 {% {# nset credibility n-values people [-1]. N; O2 x: y% g
get-color
& w8 y5 Z7 Z& N1 x$ ]7 J
6 }. p0 O) t7 o7 r
end0 a9 Z- |4 a+ M8 s5 ?' d5 t

* E8 F+ Q  ]4 `+ b5 }" ?to-report creat-credibility' X& p% z3 f) K! c( x
report n-values people [0.5]
5 I5 ]8 R% c9 Z% j- ?- Iend
3 m: U+ l9 q  A3 r* ^
  C% ^- i  Q$ ]1 G% a' e% c4 gto setup-plots
0 L  i+ l/ L0 U: Q
! }  S, H; l; O! ]/ }set xmax 30

1 n# c4 G; T5 U$ i) }" v; e& c. y/ \5 g
set ymax 1.0
2 D- |# z) V5 W) H
9 ^9 M# c) W; S2 N( S' ?
clear-all-plots
3 K2 C) `8 n5 t5 ^) y

& y4 e) t9 v, p$ u  G: esetup-plot1
3 O) B9 k) ]9 _, M/ d

0 |9 |( Q& p* Z2 ~" ]$ Psetup-plot2

. v( n7 o& ^) B% W( x% j
1 \( H9 n  u/ U& t5 A# a% wsetup-plot3
! n2 V, K# G6 s! j* _
end
. `/ {' @) [, c4 k5 D1 H* \; E) o, u: x# A6 R( ]1 q8 q
;;run time procedures
# l, `7 s1 `' M% s$ n7 b" y) g& \5 o/ z+ w! l  }) p- r, Q
to go
% f0 J! Y1 \% N; @0 w( P! G0 B. I# E; g3 K" ?; S. m
ask turtles [do-business]

1 Z' ]- t6 ~( ~2 Zend* N3 y* d, z) A0 D- `, z

" [& \, K: ]" ~to do-business
& a7 L/ h& ?/ a' f* t, @

6 F1 N0 f( ^2 b% F: x+ i$ R/ c" x) n
rt random 360

# ?$ L$ c+ ^& r4 w7 _
5 y' l, U5 s" Mfd 1

" B- o) B" N1 @
: A* \1 R) @. j9 H3 wifelse(other turtles-here != nobody)[

/ Y6 x8 D# W0 E- G+ s: a+ N" D4 C0 k( [6 u" u# k
set customer one-of other turtles-here

0 g7 R6 s- P' q7 b( V  ]
) i1 }/ \: P* x# K: u; U/ h2 ^1 L;; set [customer] of customer myself
. n' {& _) C- P+ B- ^% @5 ~3 r" G
7 ~" S: W: ^. D: q  _
set [trade-record-one] of self item (([who] of customer) - 1)! Z; n7 J/ X" s0 Z, _+ W/ k& U1 t
[trade-record-all]of self+ U9 x( N: q9 R1 a0 p
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; _9 ?- X9 C0 Q; g% x! O

1 Z( G4 l$ g. k3 U$ ?set [trade-record-one] of customer item (([who] of self) - 1)  _( a7 {( d" O% R  r' Y% l
[trade-record-all]of customer
: J4 Z4 `% b8 C- o; v$ z

8 E6 h& j/ ~$ l2 ^9 N8 Yset [trade-record-one-len] of self length [trade-record-one] of self

- ~  l. m2 n, Y/ b0 I) K0 u; k0 Y* I( e/ o( ^; u
set trade-record-current( list (timer) (random money-upper-limit))

/ j) ~! V0 a. `( F) \- U4 M8 c9 ~2 k2 G3 j/ v) l7 ^
ask self [do-trust]$ E( A( @/ {* y8 _' k
;;
先求ij的信任度, f. p/ m1 F( [. \+ E! W) R* h% {- l
8 `' O6 R; b  n+ r: ?3 ]% [; o
if ([trust-ok] of self)) }; a! P6 N. R4 o% V; }6 }( I* e
;;
根据ij的信任度来决定是否与j进行交易[( O4 r  B* w, j& b6 @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) D- s/ g1 d' O6 i* `2 |3 }; V
' {7 \) V+ A- h7 b- D. T- |! S
[
# l" t! I& K; ~# K' n- f
+ A3 C1 ~6 V) _# X, ]2 z
do-trade

) G1 E+ W* ?* i) P& k0 X. G! X' D  T* \& X  ?# q2 p7 S% k: P3 {" P
update-credibility-ijl
5 v0 ]/ E8 m$ i6 a/ A

* y% U, g/ w, |2 T% B" c7 J  c0 Tupdate-credibility-list! |$ {+ |, u. k* Q% A  [

7 o: O* S" l$ ~& P4 H7 H& e% p" J( n0 Q, T  G6 M, A4 k
update-global-reputation-list
! M$ ?5 R6 {3 Y
- r  D2 n: C# A- T
poll-class
+ G, y0 A. M" N: |
  H! Q) C! R: l- d$ ?/ _' O( D6 p- l6 B
get-color
4 R/ t7 J( P. q/ p1 z! M1 G, B

1 [0 O* ?  O% ]9 _1 n]]
0 [5 \+ s2 W4 x5 B* t. Y
6 h! T8 g3 Y/ l3 O' t# N2 E% };;
如果所得的信任度满足条件,则进行交易8 S$ m. L8 ^: U
8 ~# D3 K. V; i7 v
[

) n& B- g/ q& S, n% ?8 I. ]3 d. s6 ]8 S. I' W# M  T8 w! E
rt random 360
+ e! }7 q! [) t
4 F9 Q# s# k* q8 s
fd 1
( M: T1 A/ q% R& G) x, \( b% V
7 C( d, d* D; N2 Q1 S
]

; [7 T5 T9 |- {3 T6 M+ h1 v3 I( s) [+ v; z6 q4 {- q: Y
end
9 V4 q- S0 A7 n( x" ]0 [

6 L& O; I( a" f+ O- Kto do-trust
2 D% X( l0 _* \* xset trust-ok False5 G/ f9 n: t; y9 z5 R( [: x

7 _% B& Y1 o! Z  ~& W
4 U9 y! K) N! d- O% Q  a
let max-trade-times 0  S" E% _5 o" w4 |/ ?
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ z' x' Q% }) d! plet max-trade-money 0% ?" {: @5 t! l7 c+ e1 L( |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 K; m4 p+ Q0 E8 F" `- blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 z% ]: ?) c( b1 i& C7 \6 V
, e& |- a) I2 @) k1 j' H( O
1 p6 r" [4 l+ u: o
get-global-proportion
2 s& l1 Y7 B" Vlet trust-value
* b4 r  N# b6 W! `, h+ Z: J  i# A' Zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
9 y3 y' l6 W% A  Z8 w2 H" W  Y
if(trust-value > trade-trust-value)  I6 d; q5 a# w' o" ~
[set trust-ok true]
0 B' i  d' X" P' h1 dend
( f/ V: i/ `$ x% Z: R' t8 B/ e4 w4 c: j! e0 E# ]7 T* N
to get-global-proportion
4 E6 N! }  L  F3 yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ l$ e# ~, E$ L  {5 {* r[set global-proportion 0]
! @0 t" u. ^$ B$ f+ `[let i 0+ [  A) @; a% G+ }$ X- q0 f
let sum-money 0
8 B: N1 ?/ k9 Z# E2 K2 P0 o2 V; o, Kwhile[ i < people]
1 `) F& P9 ]2 {; I( w[# M+ i% y' }: N- A) p% _0 l
if( length (item i0 a. a# A( @- H% Y$ z2 g9 v, u
[trade-record-all] of customer) > 3 )
/ A5 Q# g: \6 {: o
[
7 f. _$ f7 h4 `# v( h( Mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; M7 Y: ]: t  i]2 o. M7 G1 h1 P5 J  v! q
]% ?. K% t4 Y! J! a
let j 0" K+ R2 S7 d9 m1 I/ {
let note 0& a+ _( Y% V. |- X$ b: N2 V8 p
while[ j < people]( C* Z5 S( ~$ T: |" {% t
[
" D4 k" N2 a9 g8 c" _if( length (item i
; T$ g& r9 G4 q+ j2 u[trade-record-all] of customer) > 3 )
1 ~" o# i3 {2 a) x8 W/ s; V
[
" @1 N1 J% r, h2 E' T/ I5 |ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 u( z; ^' I$ ~7 ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" V( s6 s/ p9 L3 g, c- o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! n; t( ?) E# ?7 v]
! b7 A- p  K) N3 m8 M+ h3 I]
0 q. h1 R: w6 ]0 o( Q3 ?& k1 eset global-proportion note2 m) A3 B* {$ q! X
]
4 ^/ k8 ]' L5 ^8 }2 F' \" Qend5 T0 ~2 R; S! A7 S* H9 b  S
' Y5 z- X! s( F: _6 D
to do-trade3 A- L3 D8 T' F' J3 V" D
;;
这个过程实际上是给双方作出评价的过程: ]; ^% l* o( `- {2 T  M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# ^( ~1 |1 T3 P4 Y+ Gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( ]1 {3 h$ r) x1 ]7 d& [7 M  j
set trade-record-current lput(timer) trade-record-current
5 w* s% Z* f3 {: ^8 A;;
评价时间( m" Q5 z/ I7 n; g2 \# ?
ask myself [
+ z& w6 y/ M8 o/ e2 |+ o! H& wupdate-local-reputation7 j; f7 C2 E1 R7 ~9 |. w8 o
set trade-record-current lput([local-reputation] of myself) trade-record-current. w. X9 u' F. F
]
3 W, X+ ?0 f/ R, iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, n- `) y# u+ c6 d
;;
将此次交易的记录加入到trade-record-one9 j6 ~3 d, X+ f7 n$ ], N* q% e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ U6 V/ H) `. K  }* elet note (item 2 trade-record-current )
. ]8 h6 ^1 L: ?& H/ X, a1 Oset trade-record-current
) p1 e9 m# H' S5 K' D, T/ G$ n% x(replace-item 2 trade-record-current (item 3 trade-record-current))

5 P/ k6 r0 j. v$ U& r6 K3 d/ t. Sset trade-record-current
/ W$ U8 r/ I! K, M- N(replace-item 3 trade-record-current note)
/ A& `! T' ?! J, y/ X) {
+ f- L" d/ ~# p# M: P, O& S. d

/ g2 r+ R9 s. _/ X/ j: sask customer [
' i9 Y4 g6 r& S5 H2 Oupdate-local-reputation5 P- ]5 J0 s! v  b3 p) v* }
set trade-record-current) G, u9 l+ s" o. ?0 _$ f8 P
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" g: T, H! M4 _) M! H- q* T]
9 f) K# y+ y7 T& F' p5 n( @7 m, e- m2 \: n3 }& A  T+ w, y

. y1 X; x$ g! Y* R) i. O) v* r! uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( l6 v8 }; Q8 \* f; n

" ?+ S! h) d4 k( V6 e7 R# Qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 U3 v% M1 Y3 g/ W- |1 S
;;
将此次交易的记录加入到customertrade-record-all6 V) `0 g6 l6 z+ A0 e% Y0 @$ C5 n
end
; j( W3 ]+ i6 ^) e* K  k) a, t* v+ @# E
to update-local-reputation
( |( @- c2 C# o, D9 ^5 q" Zset [trade-record-one-len] of myself length [trade-record-one] of myself. ?$ t% v0 Y1 O

% f, ]) [' p0 S; p  [& m+ q  `! N" w: f
;;if [trade-record-one-len] of myself > 3
$ a8 D% p. F% ~) h) O/ B
update-neighbor-total. E& [3 d- f6 }% R0 J! b4 O" ?3 l
;;
更新邻居节点的数目,在此进行% b8 v+ i- A9 o' g+ y
let i 31 y- V. l/ f1 q6 H4 h
let sum-time 0
) H; ]$ ]. T0 O0 e: p7 twhile[i < [trade-record-one-len] of myself]
, h$ X; T( G" A- s2 w" J( I/ J[; x9 J; ?: K/ `5 f: }# ^$ H
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ L: x; L1 v( b  iset i' N1 d* A( _/ c7 J- I* _! M% G) u
( i + 1)
: W6 q# S1 @8 }# U
]9 e3 y6 E7 H# ^% F0 e
let j 3
3 y4 z7 |3 P; S" `" b6 nlet sum-money 0
2 K% q5 f6 ^& ^( @# K5 f) y; Gwhile[j < [trade-record-one-len] of myself]
' x1 B! N  n$ p+ n" o' q[2 X; f- m: P5 z- E1 K
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)2 K8 M# L2 y7 y+ S! d" b
set j
: a7 {$ E0 ]# G: V8 w; H. d( j + 1)
1 }* u2 P' g8 |6 V5 n
]
6 i$ u# {) E8 s2 [& Slet k 3: e& S1 T) s* ?! J; D, z" _8 v: |
let power 0
4 O% h/ I: Q- B' }let local 0
+ r' K$ m* C/ }  m6 {while [k <[trade-record-one-len] of myself]
  {% C& e5 V! P$ M' r# V0 W. q[- W1 ?2 r; H. G
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)
4 q9 z; a1 B% i) ^set k (k + 1): B7 F7 J0 t3 F# [) b
]
+ t( K  u5 g" j/ s  |  C7 k9 bset [local-reputation] of myself (local)
) y9 g" g5 a- B) _" o: eend0 p7 }# [, c, _$ N. R% d

; y# n3 N  X% l& B7 N" z9 D% j) u+ }to update-neighbor-total1 U7 Q8 Y( z" i5 j

3 S! X7 n0 |$ q; C6 L% Eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, a; `( ]3 q' d0 t% H& `" t3 t+ s$ i2 ^! D+ e! l9 W" ]1 \* _8 `
+ Y" l3 k& m( N
end
4 p- {& x. F0 X0 l4 O  S. C6 U1 K& p
to update-credibility-ijl
2 J& H1 M, `6 j1 @, P, M1 F% _* {. f
;;
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 r' [% d+ N0 N# F+ k" J: T
let l 0- Y) A6 Z1 ]+ b+ u) N- {7 S
while[ l < people ]
' @, d! B) C, t; z  `2 G& J;;
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1 j7 P  U$ `/ s
[
6 a0 o6 t/ T  ]" @5 z2 Flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ s$ J; C0 i& [' `/ Lif (trade-record-one-j-l-len > 3)" D& \. r% X+ B8 u+ m8 T+ 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-one2 w! b" x4 F7 T  ^
let i 3
3 ?! Q3 G/ I6 dlet sum-time 0
2 S1 l' d( k$ kwhile[i < trade-record-one-len]
$ l/ y$ U# I; c' ]: P[
% R+ Z9 e- M0 e5 uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! u/ J; L2 ?' x0 Eset i$ W% U/ X" ^0 }  p
( i + 1)

( G5 {* \# V$ V1 {7 z1 N]& f/ }8 ~/ U, j% {6 M7 X2 v
let credibility-i-j-l 0
9 g$ A2 M5 D: J& Z! N;;i
评价(jjl的评价)
) D6 O4 P) V6 E+ G0 g+ Nlet j 3, S1 p# V" M1 y/ A; T9 b
let k 47 z5 A1 t& g) L9 l, n- f& w% c
while[j < trade-record-one-len]
! O/ h! u, K0 c6 g[
' L* _8 S& Z: [: Y5 v( `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5 e- A4 @. V6 z/ q
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)8 r# V$ Y* E7 l$ G
set j5 I. c; d" W" Q3 P, R5 Q' g
( j + 1)

, |+ ]9 M! _; B9 d]
7 ]& \" v) l4 M, ^# {" _& oset [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 ))
+ H$ c5 w2 u- w9 Q" c( X7 \3 I0 G7 y8 _7 j" O) T* h

# i! x& `+ w* G3 }2 qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 \0 f/ y& J7 _4 K- \3 n  i0 M;;
及时更新il的评价质量的评价
2 j8 x$ y1 E+ q- C9 ~% O/ Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# ]3 P( ~( }; L6 b3 Y( j. e
set l (l + 1)
/ h/ A0 x- Q% d0 Y2 s9 k/ q]
0 T, _4 k7 m: y4 h# q0 |( {end
/ ~8 g! |* W7 F' [0 |+ b6 P3 l% w1 F) O$ W6 i8 |
to update-credibility-list
6 V8 W% `0 E6 S' [2 i, i8 Nlet i 0
* @) @+ i- p8 I+ dwhile[i < people]
& j+ N6 ]2 F, J" y& w; A[
. p$ ?% C1 @) ?/ flet j 03 ]0 g$ J7 ^5 \
let note 0$ K/ N: N& @/ s. I1 K! |
let k 0
# F2 E9 G2 ~, a- p$ F1 y5 `;;
计作出过评价的邻居节点的数目
! w% {! ]1 k/ c  h0 E+ j. q! [0 s: Gwhile[j < people]2 j/ @$ S# S9 G% W% v$ `4 ?8 Q0 u! l" e
[
1 c1 R  _) `2 H: M( e3 {* `! O9 F& vif (item j( [credibility] of turtle (i + 1)) != -1)
/ `; [* A" M* `$ Z' C3 W" ]" |;;
判断是否给本turtle的评价质量做出过评价的节点/ L: X% [+ F/ U
[set note (note + item j ([credibility]of turtle (i + 1)))
/ G. C; X% k4 s4 k' ~9 [) ~;;*(exp (-(people - 2)))/(people - 2))]
- J5 S% P) G; ~1 X5 r
set k (k + 1)
3 E$ G. b$ M* U$ W, O9 q], s  {& ^: x) k# B$ k
set j (j + 1)
8 S6 Z4 [9 }  q/ Z5 T# o]
* p" X2 B0 D* Lset note (note *(exp (- (1 / k)))/ k)
) P; w6 v  l- {set credibility-list (replace-item i credibility-list note)
2 d: d5 Y4 o4 X' j4 E  ^* }" fset i (i + 1)
& m: u4 M. F5 R) _! M' U]
% A4 c0 l# X- e* Z( w1 z) xend
5 g% [  e8 ?) v6 _& R" i# Z/ {/ y0 R! W2 O$ I
to update-global-reputation-list, J$ Q3 E9 @/ h5 j' _5 Z/ m1 F
let j 0/ F. t* u0 }5 H& Q
while[j < people]
3 u7 k7 _) d3 P9 T0 n8 H6 Y[7 o" K! z) w0 {+ }
let new 0
# S( j4 e$ L( ^! B; c! R;;
暂存新的一个全局声誉2 M+ l* h) n$ M& c, a- N7 j% g
let i 0
9 ?% s& Z# r* ?* K9 r' P3 \let sum-money 0
; R9 C6 h1 s+ ?& ?& X" l* l2 w. Slet credibility-money 0
, z. P( z* k8 Y' x" x# a7 Vwhile [i < people]
* E, u" I. H6 C' C; B4 J. e* ?( G[
" {* S: _. S9 j5 z# Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))+ d$ y/ T! f" G% d" O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( O' j( N8 W: M/ x
set i (i + 1)
9 |- N1 t9 j4 _& B7 I, t; ~]
2 o' q+ ?. Z3 I: K7 Ilet k 0
3 `2 }, S7 h! x5 Ulet new1 00 ]0 }7 E" S1 Y6 Q$ R- c6 l
while [k < people]* n. ]3 S# S/ M2 z+ g' {
[/ F8 N% K/ Q# F9 Q$ B1 D" a
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)7 x7 ^+ g( n8 M' V0 ^* @& `
set k (k + 1)% x% J$ K/ {0 l
]
  ^) `: L# x& p7 @+ I4 pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " Y5 {1 x" ?1 k& u/ o. s% x
set global-reputation-list (replace-item j global-reputation-list new)
* o# j9 ], W! {9 eset j (j + 1)
* ?. {8 D# a& r9 d/ ?3 n8 Q]
2 l( \6 p) K3 _& c, S4 r" l  Aend
7 c% j7 ^' d2 c4 |
! w5 n- h) K' w) A( ]- Y" w+ S$ A
: U5 ?1 E6 B# k4 |. m5 ?
& L1 W* `7 W/ z% a2 Rto get-color
4 ~0 t3 ?: A9 A. z
1 ?0 d! u1 h7 }7 Z+ p/ ]. zset color blue
' z6 E1 R) K  T5 S
end
' o9 u  l; R0 M# j; |- J3 W/ S6 ~+ k& i" u2 P! E
to poll-class8 K/ U$ F- q4 Q6 Y1 F, t; T
end; i4 w! A' }+ z0 c7 R& V

# x. |' X! \6 l1 I! P" Mto setup-plot1
1 U. d  s# k9 v
) @* |, s- @' m, l8 ~set-current-plot "Trends-of-Local-reputation"
9 \- S5 a! }6 b9 x1 n& z# l5 i
* f9 b: @# H* I
set-plot-x-range 0 xmax
8 z; R  E9 Z5 q. F' g+ L) Y" E

5 d6 V, ^! e& rset-plot-y-range 0.0 ymax

$ j% d) ]$ ?- H7 }2 r' mend: v5 C' W3 r/ {* M' W, s
5 N9 G3 G0 a9 B8 r
to setup-plot24 `4 }) L4 R% z, n  M% p  i
& m+ F- V7 X: z( e; T
set-current-plot "Trends-of-global-reputation"

3 s* w# E0 K: [) J7 z9 ^$ G( ?6 g6 S, I1 S/ V( V  v$ ^
set-plot-x-range 0 xmax

% M8 y! }7 I/ Y* c5 ~  A: L2 I2 U' v$ k3 e7 B5 j6 N7 `# C! a
set-plot-y-range 0.0 ymax

' ]( _* T4 z- W! H/ V5 \end
2 G# k. [" b5 E: A% k
6 Z' B. x' W) p2 u5 @to setup-plot3* h7 p  V: }1 x& N: y0 v

+ A) u' i5 y' s5 u. Sset-current-plot "Trends-of-credibility"

" k/ m8 t& G4 v
, k& d/ x! @6 P# S: sset-plot-x-range 0 xmax
9 R1 }" q/ ?+ X5 K5 v! s2 z1 }3 i
1 R3 j, P  A. R1 c( c; J" E* d$ a
set-plot-y-range 0.0 ymax
# @: M8 z/ H6 v. r! s5 J
end
, ^. t$ w' U& ]! x4 C
( T! g' ], T) N+ ?. mto do-plots" N- i& `+ X: |* R3 g! g4 c' {  W
set-current-plot "Trends-of-Local-reputation"2 B2 D- R* g0 W, n
set-current-plot-pen "Honest service"
( n: w% w, B% l1 }; i  yend: M& _. |2 i& y6 ?" i: z, g
' S  ?, i5 H( 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.6 f5 e" u( q2 ?( r
7 t9 p6 A- m5 w) v1 h
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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