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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:& o# f  w4 W+ P' C1 [5 S
to do-business
7 W# {* T" ?. D# q6 e rt random 360
% X& ]0 j5 @( v- P fd 12 b! k' n& Q* T3 S
ifelse(other turtles-here != nobody)[
2 A% K" S# O2 X' M   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.
1 L. Z  O4 G, t% o$ E7 s* x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% F, `$ n/ D9 l' R( W$ @   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 O/ K5 W) q8 m   set [trade-record-one-len] of self length [trade-record-one] of self7 T' M! _5 c: O3 L
   set trade-record-current( list (timer) (random money-upper-limit))
: ^' ?% J) x1 P$ e
# b; d/ ?. L4 M& Y% {问题的提示如下:* g% \( K5 h$ @' F! b( w7 q

! m7 f% j. ~0 s: n  Derror while turtle 50 running OF in procedure DO-BUSINESS1 q+ G9 k) t+ b1 R1 {
  called by procedure GO; h6 \4 e3 F3 ~
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ W  L/ b) K- k; M4 G6 C. M  Z
(halted running of go)1 H" |1 r2 A) v8 N( v- _

: c, u; K# A& K4 Y7 x( F3 `% d- A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~~
0 z" X2 P! N! g0 ]# {' W' N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
3 R5 F9 S( V- dglobals[
( b3 O) s3 N, V/ j- Oxmax
% C' v) g/ n+ z" h# k5 I) F2 h% Dymax
/ K$ J& V9 \* U% T' pglobal-reputation-list
0 C8 M; @! T$ e* }8 O* u  V, c
) f3 U, T/ U  k5 x7 ^( P;;
每一个turtle的全局声誉都存在此LIST* b+ ^; ~8 y# n1 [( [8 ?) w
credibility-list4 j: N3 ]) m, G8 ]8 c+ m* J
;;
每一个turtle的评价可信度
* g( y8 X( t) c+ {; ohonest-service8 H% {2 h0 \- B; R+ O9 ?3 R
unhonest-service" J) G% U" d* }$ }! V8 U
oscillation
* r% U4 T0 q, Y( L6 Y8 w. R( Orand-dynamic! P& @6 C1 D( i7 f- J0 Q
]
7 P' F4 i9 l& u9 Y; h+ B+ A" `5 b* z. j: Q' l3 r
turtles-own[
% u8 E% r; S9 m5 O; jtrade-record-all
2 L) i. k) g& g; ^7 t;;a list of lists,
trade-record-one组成
$ o0 o6 @, Y/ x" K( d; z1 etrade-record-one% I+ @; j  x- C% v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' n# H% }/ f7 y) H" ^3 {; j. C( m# ?1 }+ U- S+ r; l: 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]]* t& ^1 i& s. g+ J9 ~% |. N
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]
/ ^" Y2 J. Z, v6 m$ K' L1 Acredibility-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- M' s, _" _' ^7 I" r0 F! f- r' ]
neighbor-total
* q" S# C9 r  f; U, Z" Z+ d# U;;
记录该turtle的邻居节点的数目
# Y/ Q' R9 W" Gtrade-time
8 M( R9 L0 |' _3 n8 ~4 m1 A; W' q: S;;
当前发生交易的turtle的交易时间$ Z+ a6 @. A" }4 Z/ \1 o4 [
appraise-give
5 z" S# p8 p) @+ G% ~2 @;;
当前发生交易时给出的评价
5 D, f' o+ x" ?$ l* {& rappraise-receive
( o) E$ g6 T4 f' ^# U;;
当前发生交易时收到的评价* S. K0 h* x: d$ b# a3 R, B
appraise-time
* |2 z9 I* N' a1 U% @" [" I0 A+ X;;
当前发生交易时的评价时间
5 e" R, U9 e$ ^% \9 C0 E+ Mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉1 o$ X& c9 \/ s* x
trade-times-total$ ]" O6 H' K, i8 a* g: [
;;
与当前turtle的交易总次数
0 m" o' |2 j% {trade-money-total
! d8 f* B1 c" r  X+ v9 z  O, m;;
与当前turtle的交易总金额
: f9 ^+ y' O9 W) p- l0 Rlocal-reputation
' \+ C$ `5 V% c+ I3 J4 B# Hglobal-reputation- |* B: b# X9 ~' E1 n5 B4 T- E2 L2 n
credibility
  \; [( |" V% D# V0 r9 i;;
评价可信度,每次交易后都需要更新
' G$ N9 k) R  P1 x: Ecredibility-all
! `( @7 x1 I' g+ M  Z; [1 [7 c;;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2 ~- t. ~+ L# `% Z+ [

+ E, t$ k* U/ M; ]+ ~% c;;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0.54 {% h7 v1 y9 y0 V0 ]2 R
credibility-one, Y: B) Y4 ^2 c, `( |
;;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& S. N/ G. y) _- v; f
global-proportion
) F* p/ I7 w- Kcustomer& p( ?* O6 h- t) {* C( m
customer-no3 G5 P  Z% A1 G+ @# w4 o  W
trust-ok
! L. ^; @% c# H4 K5 \: i5 Xtrade-record-one-len;;trade-record-one的长度
% n% t; n3 r5 b$ z% p7 e" b]8 d5 i/ G/ e, \

9 i% R% r$ e$ ~/ F;;setup procedure5 L/ X5 d# [% O$ w* @

- _; C  X# ~+ h, M# Yto setup
- r# `) g6 O; `) H9 r0 A1 v: u+ _- h$ T+ v- ?" b! O$ o+ y
ca

* |! u; [4 H5 y$ P% U& A! t
9 }1 _, m- C% W' X3 l" Vinitialize-settings
' F. ~$ {8 l& _$ W4 W

) ~3 Z( w/ w0 B1 |crt people [setup-turtles]
+ W: U+ p9 N/ W* T

- \1 C- y' i0 ?+ ~$ G0 A3 Vreset-timer
& G* ~7 @% L( Z

+ q- }" n5 q7 ?, s: C/ B  Qpoll-class
1 g9 m) Z/ Q( J- h4 k& g

# P2 s% o6 b6 |9 y4 Bsetup-plots

5 T0 z$ ~# R! F) A+ \% V+ u
" h+ N. f! W& @! P; E6 C) x; Rdo-plots

/ K) Y, T9 I3 m4 z4 aend2 A- o' d9 V# M+ h* V' ]0 K! `/ D

# _( Z% x, M- X7 J4 ?to initialize-settings
- J. o  L2 c$ t5 n3 o9 M8 o. B8 L3 @
set global-reputation-list []

$ \7 k% p" P( g7 R5 h9 W) p. Y; p* Q9 [' b  m
set credibility-list n-values people [0.5]

( B0 s$ B# m: l3 U2 }' b1 H$ v! k) K
set honest-service 0
6 x+ j  M  R) Z! V) D6 `' V

& m: g8 b$ q4 j: aset unhonest-service 0
  \% w5 P) I" Q% r* ?0 l
. S* P6 L( U( _- c6 N. n
set oscillation 0

3 n. i& Z, B/ p" r- u9 z' f( ~; I+ ^, Y" |2 }9 _+ Z
set rand-dynamic 0
: e9 U% f9 I% o* Z; ]4 ?
end' [" X; S. [( K. R. j2 n
4 J$ w& I2 _9 W/ T# b& B
to setup-turtles
$ o% o# o( P- V, `" A' t, iset shape "person"
5 x% X/ S  }. n2 P- q2 a7 m5 Isetxy random-xcor random-ycor1 b/ y. _7 Y  ~6 X3 @/ U; ^% @
set trade-record-one []. o8 ?* O4 J. \) E$ ~

2 T) j6 G8 v9 r3 dset trade-record-all n-values people [(list (? + 1) 0 0)] 9 Q" p! q2 x( g: l0 \  P
# D' a/ l% ~( H1 [% ^8 x
set trade-record-current []1 f/ q+ e; @; X7 y4 G9 M6 B" ?! m2 u
set credibility-receive []
* c$ B) E" c0 k7 e9 a1 Uset local-reputation 0.5
( d& E3 M0 Q5 F0 W" H  @+ ]" Uset neighbor-total 0$ J7 T8 h" I, Q0 v0 o  I; G! O' b4 z
set trade-times-total 0/ {; o( A7 o1 W% Y
set trade-money-total 0/ V/ R% w9 V/ D- `
set customer nobody
* ~' x  u) Q7 l+ y5 h0 M" G  l) Rset credibility-all n-values people [creat-credibility]
# N5 V0 e  r# S) kset credibility n-values people [-1]% L" ~4 R2 ]  w" ]3 `- }9 D$ u
get-color  C% C! @6 V0 U9 \% j# S
8 o8 M/ a& r. j; M6 H' Z
end
3 I. t5 X( ]5 J7 n& j7 q* o" n/ m; H: E: `9 R  s* O
to-report creat-credibility
+ K5 j% i( G1 {2 areport n-values people [0.5]" ?. K& z5 l8 [2 h$ R
end
# x1 s/ w+ T  o' \+ @  C  |* G, q
5 w# R% b- p- k# \% ito setup-plots
1 p' ?( g2 T7 }4 k" l, ^/ ~0 N- w7 J* r7 i$ D  ]: {" F
set xmax 30
" o* O1 |$ F8 Y) C

7 Y+ P/ S. y' P, s4 A2 V) B6 g7 Vset ymax 1.0

2 R6 U" k3 M. T- Z7 D( I6 t: w( m7 J. n& a) K& I) h
clear-all-plots

: W# f8 Z- w5 @1 x. Z5 u. \; f7 \! i7 V
setup-plot1

4 u3 F2 G" J) _2 k, j- g% t- A: h: F5 V- e
setup-plot2

* M' U0 G( i. Y/ w1 T3 ~) `/ R
% K" h$ @* [3 w$ t: Wsetup-plot3
! ?2 A" x$ v4 J' c4 r
end! }; j' E1 I  V" @! }$ e, _$ i. Q

  V# _0 Z6 k# A/ J;;run time procedures" Q( }( K! b8 }- L$ `1 z) i$ Y

  _" j+ r! O0 v8 hto go& L; i" R) p/ ^4 @. q: [
1 `1 b+ h7 t' E" O8 c& h( k
ask turtles [do-business]
* R% h6 c4 q: H& w( Y. U
end
1 b3 u$ c* h' f+ Q3 x6 m" g3 w2 t! B4 V5 [2 ~% c6 Q
to do-business
- r9 P9 g/ g/ J0 g9 n
6 ]8 E/ I0 l+ W* a, a7 ?0 B; _
% h2 k' q% F* G2 a$ F' x6 u8 Q- k
rt random 360

7 c8 J  a  g1 h7 Q: [8 ?: H2 k
5 a1 L6 @- L- x3 I# p) Sfd 1

: q- }4 n, n# s8 s
. g! ]5 ]% p( h: o% m  m/ Kifelse(other turtles-here != nobody)[
* @3 R; h+ G$ t( t* R2 E

( ^) s. Y' j. B2 a# Pset customer one-of other turtles-here

4 J# I6 F6 V4 k. G) g! X6 ?! k  ?! ]$ y. w, T5 P
;; set [customer] of customer myself

# X0 Z# L& K. l# Q8 w) J( c7 c- n. r. `, @2 g+ A
set [trade-record-one] of self item (([who] of customer) - 1)
8 j3 {9 v! q* p3 L# U! e' e[trade-record-all]of self
  @% B9 A+ A  s2 X0 O; f* h3 O;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 N1 d' F2 B; ^1 ]- [; h# v3 F. `+ J" h# a7 @
set [trade-record-one] of customer item (([who] of self) - 1)/ B4 T) F" r6 i5 Q- I
[trade-record-all]of customer
6 l4 R  `; \0 \' G4 V* D
7 j/ S  {4 W6 W$ T: ]
set [trade-record-one-len] of self length [trade-record-one] of self
, B1 g' S9 B$ f' }* w

' x4 p' s, W8 w/ Tset trade-record-current( list (timer) (random money-upper-limit))
/ |- [9 A' N: d% n+ ~7 n; O, O

+ S; q$ ^. p- e( Zask self [do-trust]
7 h" `  E3 q& Q7 D; v;;
先求ij的信任度- g: k& p, c" f* z0 X! c% B
+ ?) U2 q+ t9 @% d. Y
if ([trust-ok] of self)7 R, _6 O% h" R, Y3 A& y
;;
根据ij的信任度来决定是否与j进行交易[
0 I9 y' t5 h* |- s( @/ Lask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& K" Y+ \2 E6 c$ _  b, v* ~
; L5 D0 W9 e" X  s$ y" _. u" T
[

8 W4 x5 e' {* G+ t' I+ d5 T& H/ W* k
do-trade

, U- ]5 V; \2 U4 Z9 Z  ~* Q% }6 y; P- Q3 A& g0 w+ H
update-credibility-ijl

8 n, ~0 [0 C; S5 X8 p1 D: x
1 J$ `9 u  B  V0 R5 y: B9 \+ qupdate-credibility-list6 N8 B/ e$ l9 {+ d: E# Z
3 B- M: V  P) A. G7 T

% e4 O, Y( m) Zupdate-global-reputation-list
1 l  P( l& c2 C$ \9 h) @7 z
: f$ I' x( |0 q0 W2 R0 P2 v/ x* @
poll-class
8 ?+ w; p% q; D( g. i

! q. }3 J! H5 B" f7 Eget-color
: O6 ^5 F2 O8 ?- @. U% n
# D, w8 o! |8 q6 P: J* m
]]
0 q8 D; v! `- x, W5 ?6 Z. W* d2 ?0 _6 Q5 y: N
;;
如果所得的信任度满足条件,则进行交易
$ `& W6 R* }1 {7 f
1 g- i/ F& l" s2 I9 f' G[
' Q. q0 [) w+ R& U
! P2 U; S7 R! H& p
rt random 360
, V: v; z  y5 r6 v! a1 X

$ U, R; t* s9 R6 R+ h* T1 w4 \fd 1
' V; {0 y/ v( Y3 R

0 e5 ?  p7 F$ K3 x& h3 Q# w]
% l; s+ T7 |  S7 @, D3 I

4 S; D+ t. C' Mend

& j' ]! g  ~- i& V% T* X2 s4 j8 e0 t! J8 T9 W+ ~
to do-trust
* |3 r; z0 |! s# Bset trust-ok False, c- j* H4 r  c& _! }

0 O/ O2 X$ [; t  b" E4 @
$ o" G) [6 W+ \) R: e# E. g9 L
let max-trade-times 0
$ Z9 e7 I7 u- Q' Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. V! M6 l- D  w5 ?+ hlet max-trade-money 0
% u. j$ r* o. o% a3 a. E$ Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' F4 z; Y5 ^: ~
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 s  t& ]  Y& v# q' R& u% H
0 H- D* o& f# x) W0 p
; p1 S8 o1 o/ Q2 l+ f' H' R) U
get-global-proportion' m* M# J: b2 R! B! R
let trust-value) f6 t' G# U+ E1 [0 W2 q
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)
8 i# ^8 T6 |. u- I  m! K+ {' ~
if(trust-value > trade-trust-value). I" Y# b$ C+ C3 }6 v5 z
[set trust-ok true]
5 o# M  \/ V: jend! T7 ^; e1 y. T: e6 v3 n9 p

; U3 \5 }8 e! y- _8 \5 ?- Hto get-global-proportion4 q: X  D: D# S
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% Q; y5 u; o7 _$ j9 |[set global-proportion 0]9 k; e* a6 T  \
[let i 0
  e! ^& M6 R' i5 t: E; olet sum-money 0
: s( H# q( B4 N7 Xwhile[ i < people]
' I: n9 a# |- T5 g5 }[
, G/ `- y  n& L5 @" S7 O3 A& Mif( length (item i# n+ }  K6 b3 L0 d
[trade-record-all] of customer) > 3 )

) ]) \* O$ C9 H" C$ d3 r$ a[
, ]8 u2 ^' |7 D, }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 Y( k) b. ^  {# O% ]1 ]]( P/ w) b: {1 v8 A
]+ l6 Y; U* R8 R2 u& H
let j 0
; ?' h. ~, N3 T# ?# ~let note 05 T  ]7 J9 @& \; s+ j9 |# K$ P
while[ j < people]
. `* f$ t0 \3 D[+ Q% T+ u0 d! e; B" m# ]: o" f+ i) U
if( length (item i
1 p1 S1 c/ ~3 _7 Y[trade-record-all] of customer) > 3 )
, W4 ^# p- n. ^3 v
[: l6 M  ]) P; O% K+ H
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 i- a& Z' p' y, P5 Z0 m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; u. B) g7 f9 _- d) y) v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' q+ A4 g5 n- s6 h8 V8 r7 B]
; f& ^" W* Z; F" c: Q% ]& s; ~]
& N% z) H# z# ^set global-proportion note2 a  }8 }/ u9 W9 O% k6 J. f
]
8 I4 N6 j3 T: Y6 r  b- }end- w3 p+ t8 b; t- O2 _- w7 ~
. J8 [, Y0 q' Z  F6 P( }3 H* K5 C8 g
to do-trade
8 L( p/ o. G8 \! s8 _;;
这个过程实际上是给双方作出评价的过程6 `) t' q1 S" U, @( n2 u7 T$ x) A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 L$ ?% y, P: L5 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& _  S. Z, }  B3 j9 [" s* Sset trade-record-current lput(timer) trade-record-current9 y4 n1 g2 p2 s
;;
评价时间3 P/ P, M. t& Q6 G
ask myself [% y- v& {, U% W; z& a
update-local-reputation
+ _( q7 S; b' n; Hset trade-record-current lput([local-reputation] of myself) trade-record-current1 ~% P" l; R+ M) W5 m7 `- \% P
]
; a1 z* x6 f! I6 Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# b( b. v; B" c$ V$ ]6 o
;;
将此次交易的记录加入到trade-record-one3 ?3 e# M  a; b$ T0 Y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) j4 Q1 x, k. r0 ]: H7 |' i- e" [
let note (item 2 trade-record-current )5 C8 e: j1 Q+ l, M
set trade-record-current
2 H( l# X, r+ b3 R/ n(replace-item 2 trade-record-current (item 3 trade-record-current))

% G. p: Y- \# ~0 m- [# sset trade-record-current
$ a1 R0 @' P3 N% r# z(replace-item 3 trade-record-current note)4 `/ B  }, S# K' Z8 B

5 T3 B( U' O2 Y0 o9 t  f

2 u- L5 i& O  ?: M3 _' Sask customer [) B* {, B' r" M/ Z
update-local-reputation
5 {# V+ |; p) _set trade-record-current+ ^7 Q: c' ^3 s# n, E& k: _. ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 W7 B5 T1 T; G. O! p+ Y$ r, Y9 [" h
]
% Y. K7 t% ?7 v& R! ~% h* Z* Z* ?( i0 s1 l$ _1 u* P
- @5 w7 c3 d0 d1 x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ x' M1 t" _$ V) F6 f9 K  Y% Q8 G
' r8 A  \) u6 A& _! r
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 o, r" X" H2 Q2 h0 S6 E) _) D
;;
将此次交易的记录加入到customertrade-record-all3 f( [- j2 P: G4 x3 Y
end
3 G& u* i6 u# ]" {% {0 w. s0 G8 u: ]! e6 A4 c
to update-local-reputation2 e3 F1 T$ }& d( @" C: w) ~
set [trade-record-one-len] of myself length [trade-record-one] of myself, T- m. F" |1 b+ C1 W! o2 L
; Q; E7 h0 Z8 K
* J. v' K# k" ?2 n: k
;;if [trade-record-one-len] of myself > 3
& d0 l$ |5 x% t9 @. G
update-neighbor-total
6 P( w! j( ?+ b6 r3 \8 M( ~4 e;;
更新邻居节点的数目,在此进行
6 i& T' S& E' {% H1 olet i 3
# o, n& G$ }2 @* Vlet sum-time 0
3 i2 {  W4 z2 b% r0 Uwhile[i < [trade-record-one-len] of myself]/ [( Q4 q) @) d2 }0 e
[& q% L- J% T( o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 b( C8 p$ m5 W5 ~) @
set i
! N2 u+ ~& Y/ p( i + 1)
1 n, V9 r$ K$ t. x% b- ~6 a5 w
]
1 ^  F$ H2 }5 K2 M  Clet j 3! p& F) t( ^# C/ ^8 D1 O7 y  ]7 b
let sum-money 0
2 k6 i$ y3 d; w# _/ R  Jwhile[j < [trade-record-one-len] of myself]
5 _$ u, u+ Y2 f* T5 q; O[- j' ^1 Q, t1 s+ a, s
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)
6 q( L$ O% e. F# Q2 W* C4 kset j7 X- X  m9 [$ P4 ?: U2 M# u- C
( j + 1)

6 q: D- x7 ?/ W  Q7 v, v; a7 a]  x# t: d$ h) R: K$ o+ a- r
let k 38 D! c4 O& I6 q, Y1 h( ?% h( }
let power 0, F" w4 |/ o7 @, t, d  @6 W% A
let local 0
4 Q7 @; f( S1 |8 Swhile [k <[trade-record-one-len] of myself]  ?* G- k; C0 Z0 O' W  c
[
9 U5 |) G* ^# j8 l  mset 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 O% m" ?" O" @  r2 w
set k (k + 1)$ C" W8 q6 n4 I6 S2 @& U
]1 v% q0 q3 e8 Y) N2 Y
set [local-reputation] of myself (local)1 H9 }, a4 v+ @
end" h/ g& K. X2 ]
0 m' }" \  W6 c! H, ^6 E* n
to update-neighbor-total
7 a) W) }. a1 h2 V' g) U( d1 `/ v( c4 E4 ~0 \0 u6 ?% p6 ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 p$ [: q4 s; Z( ?# m

9 r9 q! B5 i0 A2 n/ t) ^( ], E

+ N9 [0 T: i  f" A% G) n& ~9 Fend4 p. V  u  F; Z0 b0 m: j0 B
9 p3 {0 h. Q# q" c5 z  q
to update-credibility-ijl
  v1 m& r5 q$ b* E2 k3 H, v% R( Q$ q6 `% j5 L8 h
;;
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。
' v- }: E7 k4 A. ~3 m, M1 elet l 0
; h1 p% N' a  J  o, [' Kwhile[ l < people ]
6 @' z8 v9 }& Z# K, o: p! w;;
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0 @% U' Z" O, e  H# O( P
[9 @$ @! m' R8 O4 s  h# z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 S  C5 o: Z7 A- ?" e' [
if (trade-record-one-j-l-len > 3)
8 w# {3 ~6 X4 d+ A[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
5 s5 B% A* I9 D. S, k) }let i 3
, F+ o9 G+ w8 ?6 i6 \9 nlet sum-time 0: u4 N$ j' R8 \8 V: D
while[i < trade-record-one-len]
6 e, F# D' ]0 n& @[
2 N: o# h+ x* `! X. l3 u/ R+ v; jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
9 U9 T5 w! K. c! `; |set i8 h; m' d" T# C9 |- w
( i + 1)

; B3 C! x- e- D3 v9 w, D5 G]
" `9 @7 j( {0 f. hlet credibility-i-j-l 02 T: j- J$ P8 M1 @# _
;;i
评价(jjl的评价)
$ C9 E7 h" w' [4 H7 \let j 3; E. X( F# m! ~0 C: y7 O9 ~8 M2 g3 m* [
let k 4( f$ C& o& X8 l) O
while[j < trade-record-one-len]
+ \/ ?* J& z  c; S5 }0 j$ B[+ w; C7 F/ |. u5 ~" h* a1 r
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
0 p, ]8 V$ N2 u& k9 f9 }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)
  D  ~, h" u: Z, k' S7 y7 dset j7 s3 k! e3 L; h$ ^
( j + 1)
* M" j; z) ^# L6 }% l: ~. ~
]
/ n( c# ^. ?" ?. n0 Bset [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 e. C4 v# g+ J) {- y/ h7 @2 w2 d0 q& a0 _
/ l" i# u, i1 _& v9 S
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) Y4 o; H, W  R;;
及时更新il的评价质量的评价
" u1 v: _' i0 x# }4 wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- Z  X8 ?0 R! o3 J/ j
set l (l + 1)
- D2 ]% D4 Z& S7 i& }- @]0 ?4 L/ W# c) ^/ E: c9 O
end3 g" Z; D3 \9 @7 d  D

* J+ q7 t- ~0 `  B! A% B' s# T2 Zto update-credibility-list& _0 C- o2 E1 A- c% `9 B0 D
let i 0
( G+ k/ e+ E7 W, W) Mwhile[i < people]! E, N4 l6 t/ j6 ~( {
[
* v3 b' [6 T4 Q0 jlet j 03 Q5 ?' Q7 G& D0 @4 _5 V. _
let note 02 o* G8 J. t! ?: m( L
let k 0
% |3 a6 I; O1 r% B7 h2 {( ];;
计作出过评价的邻居节点的数目+ K; x/ E9 b  F9 Q. p
while[j < people]8 O+ U6 `# o! A$ _
[$ A* v% R# Q( o/ P/ ^& g9 K: E
if (item j( [credibility] of turtle (i + 1)) != -1)5 [+ j5 u3 H% N- q
;;
判断是否给本turtle的评价质量做出过评价的节点" K# q) F7 k& F& ]! {& s
[set note (note + item j ([credibility]of turtle (i + 1)))
4 a/ x! l. p" d# R2 [3 k;;*(exp (-(people - 2)))/(people - 2))]
6 h+ \: E$ G- y, U# v% b1 R4 _
set k (k + 1)
0 E$ Y" m; T1 a$ T# v/ T]3 q9 s% s- \4 n1 U
set j (j + 1)3 w4 ^$ J& Q0 _/ y
]8 V) T% s( I* R- T+ j! r
set note (note *(exp (- (1 / k)))/ k)
2 E' [8 S* N- w* G  B. Aset credibility-list (replace-item i credibility-list note)
3 r2 b6 h+ F+ Vset i (i + 1)) _- [; u0 a3 A. _# k0 D+ L
]
- o" ^5 W3 K# A; q9 d# g' [2 ~0 wend. I& }. f. u- `  P8 H" @# S% l

# V$ U  d. }: |7 ^to update-global-reputation-list
6 ?( {1 u6 Y% l) J6 L7 e! f. Plet j 0! r: M# x7 b, b( Z( A
while[j < people]- ]# S7 U  G2 f  T6 A/ c( M" u
[
6 F* }; x% K' f' U" w* H: xlet new 0
% h1 C0 P- Y- K# D0 U;;
暂存新的一个全局声誉8 G( C9 x7 _1 v+ {1 `0 z. k
let i 0* E: a9 J1 V$ `7 n1 o) w5 j, W
let sum-money 0
1 ]8 f1 _' {# y* ~' j3 P6 Wlet credibility-money 0
* m! ^- g6 J7 p8 W1 Y3 Rwhile [i < people]7 P9 q2 p1 l- F' }" s
[8 d+ x) Y) F0 F% Q; J0 R1 y3 A
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& T9 o( D2 C4 W5 P& A
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)): N# h3 Z/ B/ X8 `
set i (i + 1)$ _9 C/ |: ?# L8 N, X, x' ?
], j9 w/ X# m  R6 k4 T' v) F% u* K
let k 0
& J5 @0 J9 l* Dlet new1 0: s7 i/ v- K) M" V9 B& t6 N+ [
while [k < people]
! `( \- A+ S; g. [- S6 P- P[
+ g, y! e& }; ?+ ~; `7 uset 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 t9 o3 q0 o$ q. y5 _
set k (k + 1)3 F& a- }( d5 D2 x( _$ ?
]0 \7 {' I! h5 y/ M2 d' R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 g* ~3 e+ n5 e( O: _+ {
set global-reputation-list (replace-item j global-reputation-list new)
9 w4 P/ C+ g! z2 m, }+ G* yset j (j + 1)
( _5 ?7 q( Q" ^/ Z- []. W( E- M5 H  v5 a  Q) C
end
( j0 V: ~- W. x! Z
6 b3 L/ O# N( H+ a4 o
. H4 d: v! g% L% }8 |* A2 Q1 p  E9 _7 y( V
to get-color
/ D+ N0 n7 E( R: Y
! }2 T6 ?5 N/ Q, ]set color blue
5 s' ]8 H( P1 [2 y0 O$ E
end
( P. t; u. }/ o( L% B2 U  O, h: L, o/ N: W! f) x
to poll-class5 P* R7 O% D; s+ ~  N5 ~9 g; R1 @/ R
end; k6 t( z% j& b; J# A' O) I) D1 o
8 A9 W# S# J) H0 z! [9 ]
to setup-plot1
5 P1 o$ C4 b8 C% Z: o; g
; _5 p6 c  o3 Y  Hset-current-plot "Trends-of-Local-reputation"
% Y% b. N. Z# ~4 U) q/ J+ V6 \

* y5 \" _) e6 w; Oset-plot-x-range 0 xmax
% X+ @) @5 S; @/ @4 r% ?( H0 t

$ W! C' k1 h3 R8 x' |$ nset-plot-y-range 0.0 ymax

  ^2 g5 G# |1 q! B( T6 |3 rend+ Y. l7 s/ A2 F* e6 B' c/ G+ Y
3 v5 y- K: x% H9 t. |, p' V0 l9 v
to setup-plot2
) \; [3 ^! I* k& D+ h0 ?  ?. D4 b/ a6 b  U& C1 j" E
set-current-plot "Trends-of-global-reputation"
4 j3 ]; S, A- C# g* z) F) {

  _' a7 K3 U7 y0 g' Bset-plot-x-range 0 xmax
1 X3 Q! d) H: r% C

9 J5 D; v. _5 h% ]set-plot-y-range 0.0 ymax

- p  E/ q$ q5 {/ ^end% _( V) y) z) p* ?9 k' j
" R2 l$ [" u2 v( K" A' ~
to setup-plot3
2 t! r) J& B2 q2 |! K9 x& S  a4 x6 z- Z8 _  v5 h
set-current-plot "Trends-of-credibility"

5 x& v, v6 Y& d$ _; j3 Q/ {, V1 f( m  m) {0 M7 S$ X& @
set-plot-x-range 0 xmax

; h% }4 C/ K) o& V1 |6 C6 {$ x: R; h8 J
set-plot-y-range 0.0 ymax
" ~# S! [1 C2 t+ P( u- |+ Q
end
1 t% Q5 L+ `+ A% o
- ^( q, r! ]; @( g+ _. |4 tto do-plots
. q' p* |9 O! b8 m+ F2 kset-current-plot "Trends-of-Local-reputation"0 H$ i0 M' a8 N) z) j& y
set-current-plot-pen "Honest service"& I6 ]' m, F6 M) Y
end
& h! J. t" C! t, y/ z; q/ W
1 a7 x% m$ Q3 a) M, `. X[ 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." y! ~! Z; `/ h4 k

$ B; x# t3 W0 U7 n6 C5 t- b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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