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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:
& P# {9 ~% m3 g' n% sto do-business
; R) I! m( H7 J, w4 _: l! ^8 f6 l; l rt random 360
3 A+ C) ]3 H2 C1 B6 O7 Q fd 1" Z" L( ?+ [# Y, v6 }/ {6 P
ifelse(other turtles-here != nobody)[% K& B4 P3 r% t
   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.( u/ q. q2 j- C( \# @# h
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & |9 W0 }8 H8 C$ R+ s6 E
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 ?$ N" N- l. P0 B- D% U1 a   set [trade-record-one-len] of self length [trade-record-one] of self, r% ~# \( ^/ ^) _
   set trade-record-current( list (timer) (random money-upper-limit))9 F  }3 L( M2 k
' v' o3 G! [/ I/ a
问题的提示如下:
! t0 Q  e7 W' |8 p9 c! a: p/ O' r! ]0 h3 m" y/ H0 ]' k0 a
error while turtle 50 running OF in procedure DO-BUSINESS
; G* V4 A0 Z3 U" O: B1 z+ W  called by procedure GO/ E! y4 }: p" I. H# _# B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* O$ d. `9 }  U) f/ T
(halted running of go)
9 R6 W! R, F3 i% Z% E! d6 e  a$ z  P4 H  F2 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~~
. F( N/ M: K" |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
$ h* q, U0 {2 I( s$ o" pglobals[4 v( f$ S- }3 R# t) `+ D* r
xmax
+ q, z9 W+ X* H- D% Q9 Kymax
$ x* P6 ?3 N; b/ J! n3 [) ]( F" kglobal-reputation-list
  e2 t: n! q3 d/ ]. `+ N$ i0 d/ p3 K) W* ]& x
;;
每一个turtle的全局声誉都存在此LIST
& |  m, W9 t# V: Scredibility-list
: D" {& m: c* o4 g: X8 m1 w/ Z4 e: b" `;;
每一个turtle的评价可信度% n$ ]- f2 B5 W% A" J
honest-service
4 s: v& w+ S" s6 A4 `unhonest-service# i7 a& c. D2 Y) k0 ?6 d9 u7 H
oscillation+ K# e1 F6 P5 z
rand-dynamic) Q! N, ]( n5 L" l* P4 i, g# b
]
% {: ~, G  s6 ~# R  ?
6 I5 m/ ]7 ]8 p8 W. D: eturtles-own[
4 w/ S& q: Z5 y* ctrade-record-all
( @4 I$ H  g5 `" b2 e;;a list of lists,
trade-record-one组成- p( l6 O2 v+ u6 Z
trade-record-one
. |/ v* J' \: A& h9 f;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; u& X0 g$ j+ l  x/ L: T- @
5 r  n  D& b1 v# n$ M) b;;[
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]]4 p2 a+ ^) Z$ f
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]2 Z/ M/ |5 v; L
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
% o3 D# z5 J" I& P" D" eneighbor-total* ?) z; \: F' }. L  b% g
;;
记录该turtle的邻居节点的数目5 c" i/ y6 i+ @; F+ a0 Y) Q
trade-time
" }4 p/ V. i; P# R;;
当前发生交易的turtle的交易时间9 f% `- j6 N! _! M/ d) U$ ~# a
appraise-give
  j- r/ ~) S1 J) g6 U;;
当前发生交易时给出的评价! j' {* W2 @1 M0 n/ y) ~: J* F
appraise-receive
/ ?  q' n4 ]) R;;
当前发生交易时收到的评价
2 Q2 O* l: }. _4 W& Mappraise-time4 H# f# n: A4 \0 F
;;
当前发生交易时的评价时间
0 J$ G; n6 P  b9 Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 d. N9 z/ k( ?trade-times-total
) @1 m( Z$ r* i) J% Q;;
与当前turtle的交易总次数
1 [" E7 \5 X9 U" y! I) Ttrade-money-total( u6 Q: [4 C' C( r3 C& v2 k7 Q$ ~4 }
;;
与当前turtle的交易总金额
4 Q5 _( {7 O+ z! v/ ylocal-reputation
3 k: q* |6 }! a3 `8 G- c  w2 Sglobal-reputation* |' F8 c; r0 @( R4 }. g
credibility( q' D1 {5 \6 W
;;
评价可信度,每次交易后都需要更新* y' w3 ^3 s& w9 v" E& E3 F$ N
credibility-all
, e- k& {. r- d;;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
7 E3 [& B- r, D* q" L8 V0 h
, k* y/ d& A4 Y;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5! m) H2 U/ M+ J4 g/ n+ W
credibility-one; ^8 Q6 Y  c1 d  z8 h. q( |2 V
;;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
2 P/ s" w6 v0 M" m- Dglobal-proportion0 ^" S2 q6 U0 ^5 J* h2 [* K3 s
customer
( x4 |( H0 X2 X% t6 C( p: N% j+ fcustomer-no4 s8 X$ @1 g: Q: \" Q  F
trust-ok2 `: e% N4 u. x( W! `+ C, E
trade-record-one-len;;trade-record-one的长度
& L/ i% `' ?6 p]4 k& C- K% }( ?

6 |# L1 z. _: \" D3 e7 V" g;;setup procedure
( J6 w- _& ?1 S# G5 a% [5 H& R6 _+ f, H
to setup
- e' ?& ]* p% [. G; Y' I( ^: O+ ?6 H! S# J
ca
6 Y0 T7 ~7 J* }/ p" a8 B

5 a  F- s$ w5 f( }/ y6 qinitialize-settings

! t( A) s, t2 ~9 \9 g8 W
: X) w7 a( t- C+ Q& H6 ^& zcrt people [setup-turtles]
+ p8 b6 N6 f0 ]* P
, K; A5 l4 h1 u: I
reset-timer

$ {+ V# c3 Z, e5 F- l
% S( A+ s& ]( H! j4 N9 U9 dpoll-class
. s, C. d3 Z2 q# R

& M- N- r  D3 F$ G+ f( Q9 ?setup-plots
1 D/ U% B" p7 u* A8 }/ n
5 d) r( e9 b5 Q" e+ g
do-plots
- y' g1 n7 S; y
end6 P2 f7 _& ]6 U
9 e! d8 n. D  j/ \; K5 O0 J( g
to initialize-settings
! M+ W- ]& W) E5 e6 E5 s0 q. M
4 m. F7 s- T2 T+ }/ c. u2 }1 {set global-reputation-list []
1 O0 {/ A; o+ k
- @* l8 ]! g  s0 s
set credibility-list n-values people [0.5]
9 i8 L8 R6 ?: q& T( O# n  z
6 N9 |+ {# R4 ?
set honest-service 0

/ a2 H: e7 d, H* j: {5 o3 W9 Z3 c. {
set unhonest-service 0

1 v( Q4 w! ~- S( s* ~+ |6 {
' d+ I' V# h1 x; h# x) Oset oscillation 0

" k  M9 R/ b  C4 ~: s, ?, X* U7 D5 w  y
set rand-dynamic 0
3 G5 l0 B- N# N- C4 A& \
end/ a& ]4 W, d  R, q

% r8 g( z4 K8 ?: P$ Xto setup-turtles ) Y0 b$ M+ b" U. i
set shape "person"
" o* v/ Q! G* V' e: ^6 A6 k: ^, Fsetxy random-xcor random-ycor: X7 A1 b; B& u1 D& r
set trade-record-one []3 @1 b- f7 j( [0 |
* ^: W4 `) Z: [, e
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 C( @  R8 e; A; g% e9 ]

) S3 `# h% r* \5 _3 z$ h7 `set trade-record-current []
" J# F1 P! _8 Z# y, bset credibility-receive []$ n$ d3 ?  x: ~( d1 C4 X
set local-reputation 0.54 n7 B( z' p$ s* c+ S
set neighbor-total 0
' [6 h& g; q; e. G% p& Qset trade-times-total 0
4 P0 r, ~' N) x9 A( Lset trade-money-total 0
4 u  Z, A8 }$ T2 O7 e( K5 O1 Qset customer nobody+ W# G' D$ [2 v9 G& T2 f
set credibility-all n-values people [creat-credibility]3 A  @. d8 b  y  g1 A+ c3 P/ N4 v' a
set credibility n-values people [-1]0 ]3 z8 Y0 O+ x" o7 L/ d
get-color3 W  i  K+ _: N1 z1 }$ u+ {

/ `1 q! I* T* |0 q9 Bend
, q5 U* B( E: m* A- Q5 Y" L5 c' W% t: i6 M
to-report creat-credibility
: ]& k+ o* ]8 W" D6 Nreport n-values people [0.5]4 a4 r0 Y9 k  k% W' a
end
" ]7 M9 m) ^- R8 a, C6 r
. \8 v6 G2 g- A- x3 ~' Eto setup-plots8 j: O7 z. P+ b- P

4 n( c; }% x- b" K$ Zset xmax 30

0 \: u+ x7 r/ b
+ [8 W! |5 J8 T- x( t# C# Kset ymax 1.0

; M" {( v+ n2 [% v3 }$ q7 E' p/ N. n6 N8 @6 y
clear-all-plots

8 [/ B# ]% [0 ^9 a/ ^/ h# z  Y. J, ?# r& n) S* E9 a: n
setup-plot1

) T% w) f/ u$ J. S9 w- Y/ d/ A3 U% m2 N: H1 L1 B4 S& E' t; H
setup-plot2
! M& \8 D" k0 `

8 U3 `0 W2 T8 psetup-plot3
7 h8 E. v/ a8 A! O2 f8 c
end3 e+ T; g8 U/ L: K0 ^' p' n
& _" p0 ~" f" c4 d% V" o" b
;;run time procedures$ I. V2 t3 O4 Q: J

; e! r" V* d* e( |3 `8 D  dto go
8 C- M2 }. G) D& G- t0 p7 Q) t- L- M  V
ask turtles [do-business]
% P5 C5 L) Q0 A4 \
end
0 }1 g+ M3 C( R: |4 B
6 l# x5 G9 _+ |8 M; W9 a; pto do-business " }+ Y5 ?/ [+ G. A! X; T* |

$ ?8 Z- m5 H$ d. f$ ~  o
4 u% D- C0 o6 h# @rt random 360
  a# U/ j" h2 L, g: Q
7 ]! q0 T+ _& e) A# ^$ r+ }
fd 1
5 i& ~1 T, L: g6 j$ H
7 K1 M3 r# O% q; O$ e( H/ b1 w
ifelse(other turtles-here != nobody)[

, _7 n' H! e7 i6 h; n* r& w; D+ g% @9 r4 f% }) b1 e0 X
set customer one-of other turtles-here

$ c% ~( W+ j* M' u. N$ S1 ^7 t6 D" j3 K  D% _& x
;; set [customer] of customer myself

, d" H: [: ~0 m/ l. W8 }. G0 l7 M" o# J6 B. y. u0 N
set [trade-record-one] of self item (([who] of customer) - 1)
& g9 {0 W8 N" M: S' n( X0 ]* S[trade-record-all]of self
; `. ?) o: O8 b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 W- _$ W1 C2 J, [. u8 i% E, l4 [; v. h3 Y; j
set [trade-record-one] of customer item (([who] of self) - 1)
: @7 |+ P4 _6 e[trade-record-all]of customer

9 N. I! a9 L5 N( s' ~- ~6 a+ h0 Q0 C; L) D9 z& M# d! o
set [trade-record-one-len] of self length [trade-record-one] of self
0 H* Z$ l3 j# G6 |% j0 v6 @

+ @3 j# l% k, j( ~set trade-record-current( list (timer) (random money-upper-limit))

- d0 ~0 f' x1 P- j, A, S6 G8 r# X( ~! m5 W: x, \
ask self [do-trust]; F. A4 b+ ^# i! G
;;
先求ij的信任度1 L2 a0 F% m9 R2 t
  _0 }  s" k' V& |6 \3 _
if ([trust-ok] of self)
0 n  ^) b* c" ~/ _( E" @# n;;
根据ij的信任度来决定是否与j进行交易[8 F% u$ H, V7 [7 D2 ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 ^9 Z; N8 c; O/ s$ ]
1 Z" ]/ l1 }4 W
[
: J1 M+ T* G: V$ o

+ s) P8 _( i2 ]$ B7 m% }6 q- ?8 Jdo-trade

. S) X- y2 w1 b0 m$ \) d' v2 j& p! f. g8 {$ k) [) R: I
update-credibility-ijl

* }9 j4 [; o4 [$ c: n  }
9 n  q. u7 F. y- W& S9 eupdate-credibility-list
: t' Z% s, ~5 j

; f1 @7 ^' p6 Q9 N( z. a8 B2 r' I( P  E5 ]
update-global-reputation-list
5 Z2 J; g$ c" K3 @
7 e: M( z% D- ?4 F
poll-class
3 P3 N7 m' [( `$ l" [

7 X8 n1 c0 `2 cget-color

( k6 N5 A4 X3 D" H0 w
4 e$ U4 n- p1 V2 U8 \9 d" m]]2 c6 u, M* O  k/ C% y( r
; X. _7 R+ I) I) U/ }
;;
如果所得的信任度满足条件,则进行交易
4 u/ M* i4 K9 o3 [4 B0 K9 o% l
8 O2 f0 m5 _' L  h[
) N! ?1 Z1 i' n2 O- A! x8 i6 g: y
" h* z0 y' ?6 ]  S9 ~6 V$ R: x
rt random 360

: f, D1 d; H8 Z' z! e) X% G$ r% k# S* t- ]
fd 1

# b2 h% `1 e" P5 T4 G* N! s8 B" I+ {* R
]
8 f  K: c$ e" C3 `2 y

$ N9 i. O' \# ?6 E  F' b# Q/ Mend

2 Q( x% l6 E* K. m
1 E, G4 G! }  ?7 ^, C9 Sto do-trust + g  T& b( J2 V: w" ^, _# _
set trust-ok False
( o3 l: H" F/ H$ b4 A6 S! ^: i0 L6 e1 I

1 X* \( d& A7 m! v$ s' Flet max-trade-times 0
! s  l7 a4 ]2 h9 e% Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 X8 @( q) \7 {, v$ b8 C, M9 ~' j0 q
let max-trade-money 0( ~- B9 [6 Z  d5 w- M- F
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* t# m1 ]9 H6 }) E" w
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). K$ J$ e5 Z& e1 K
$ M* [1 m& d# k9 b

3 [' r& F5 `! L- v6 ~get-global-proportion! A- M, V1 H$ Y/ M3 W$ l
let trust-value% f) H4 e+ ]. ~- |6 u
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)

  M. i3 L7 I/ I" I' Oif(trust-value > trade-trust-value)
+ m# G6 @% s+ G[set trust-ok true]" e7 R! G: {$ j! l3 x4 g3 t# ]
end
5 I2 S1 E7 y) P1 Y2 K2 ]3 a$ n
2 c: M: o9 k# ]5 q0 A0 Pto get-global-proportion1 o2 d( u7 O% h& f3 L. Y" E% w1 Q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' L' g8 S/ l, ]2 v9 s
[set global-proportion 0]
/ X, Z/ q0 P/ U$ I/ C6 |5 J6 N6 K[let i 0
4 M" @1 w% b. `* M. g8 E0 Nlet sum-money 07 s6 w$ k% E3 }8 R
while[ i < people]
+ a$ c+ v6 v2 U1 H9 W% T- ~# m[; x' ]1 _* r) u) ~; v
if( length (item i
$ N% k5 ~3 _+ H" W[trade-record-all] of customer) > 3 )

# @6 D: j+ U( {[
0 p& Y" c" F5 uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; b1 H3 R7 X2 x7 t' w- X]; N- L: W% m6 R7 w
]
1 V( a) V9 U4 S- {6 K: L/ Z+ Olet j 0
+ \( B+ v1 ~$ x* y0 vlet note 0! w( \" b( c+ A8 V! ^3 O3 A  P
while[ j < people]
3 n! i: ~6 ?: |* z  H[
5 |; X0 j% M* i9 C4 q8 Cif( length (item i
5 A$ I' f, Z% N$ Q! q$ ^6 i[trade-record-all] of customer) > 3 )

0 ?/ w2 g9 w1 V[
9 _# P3 \' Q2 {, z# Y+ Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' T  Z6 p6 r0 D( S$ ?[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ R+ p$ J$ N* @5 K$ h! ?% ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% D. R* i/ r9 ?! X. a  r2 X! M]$ H+ o8 s" e1 l
]0 ~7 r+ `! d$ {8 `% _' s
set global-proportion note! x+ `, h4 e, g6 Y8 }' Z# q2 Q
]0 P4 [' k  C  q- O6 s4 W
end
% U0 f% B- C$ Q: N; K1 g* J( g$ _) ?# b+ }0 w0 |; \
to do-trade
- l, \! l0 i* l;;
这个过程实际上是给双方作出评价的过程4 v8 A# }4 i  n* q, `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ F# H! ?3 u; }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 r( i  J2 g, Q* J+ L2 r, cset trade-record-current lput(timer) trade-record-current
, R' T2 \7 V# R7 r2 J;;
评价时间
, A7 z# V8 T$ _  P' sask myself [  r, F( j: i$ ?% v; x5 Y; _* l) e% @
update-local-reputation- p, ~9 ~. C4 K& H- U' s9 V8 y9 w- J* Y
set trade-record-current lput([local-reputation] of myself) trade-record-current
  h: K& h0 ^7 Z: L* e) q' l. P]
  E7 e' D% s5 Tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 }' n5 q+ u" c' V/ I;;
将此次交易的记录加入到trade-record-one3 l# \( [3 `7 h7 d% H+ e% b5 U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* o8 `' |  ~" G0 S: B3 d3 Clet note (item 2 trade-record-current )
5 Y% @7 {- _2 A) mset trade-record-current
5 _' G: T) u# w: j4 @  D(replace-item 2 trade-record-current (item 3 trade-record-current))

% X7 F6 \  f% c) ?& A$ p. B) uset trade-record-current( L, ]- M/ `- k0 Z7 F' Q
(replace-item 3 trade-record-current note)) x: g* Z  n: R5 i3 x7 l8 G
0 F% g  @( U/ F1 Y( N

. ?5 Y: t3 {* {3 q2 }ask customer [
9 q: v$ x- B4 Q2 Jupdate-local-reputation3 J2 i! a$ K- e8 o+ _5 L$ v
set trade-record-current
0 Y- s! j3 t3 r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ O9 Y: |& p0 F. _' q]6 e& m2 t, V& K1 L' c# m1 H
$ C4 Q! z* f4 S1 X) i( R- z3 t. B
+ a  A7 k5 x# z( h# L
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: ~. V) i4 S$ Z  B, O" b, @* n' n4 l
! o/ a) G" C3 M& B- d4 ?2 x
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 n/ z- k8 S# [" u% E;;
将此次交易的记录加入到customertrade-record-all
4 V. C2 r2 M! g0 F9 r- e# P7 Uend
0 L7 ~+ i5 h  M/ ?& [+ Z8 m
5 t* H# ~' l! D: D. T* gto update-local-reputation, U. [/ a: r+ v- E) |1 {0 h) z: e
set [trade-record-one-len] of myself length [trade-record-one] of myself
& j* N( b, ]6 C) \" U: y* O$ E+ P: L0 U, m: F
7 X" A+ p9 I7 Z) h, @: B9 h* R. y
;;if [trade-record-one-len] of myself > 3
1 L$ H- \" w8 H2 k- i. f
update-neighbor-total3 z. F# g( z, q2 P; @
;;
更新邻居节点的数目,在此进行
$ J0 N1 P7 }' t0 e  b1 _! ~! ~% ilet i 3  N  _! X9 j: ~4 L. m6 ~
let sum-time 0
9 f& }6 X/ A$ r- Y0 H! [9 ywhile[i < [trade-record-one-len] of myself]
, B' _* w7 X  w% E[  }0 a1 [: v4 G, p4 h2 [
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 s8 [8 V3 Z! S, T! j: P% z
set i; `2 N  T# w% v* v
( i + 1)
, ]6 |+ j" {6 i* |4 ?& n
]
$ G. G3 q5 F. G# i1 d( G9 R. s. a. flet j 3
/ s$ B! O9 N; \- x1 C0 Ylet sum-money 0, M; \$ i. A1 V, X4 Y+ p  o" ^
while[j < [trade-record-one-len] of myself]
5 m* ?- H3 T, p# a% |0 Q% @& [[5 }4 {7 L8 u- c5 i& I
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)
4 \' _7 D7 e; A6 Oset j
+ ]$ e! K2 e9 c( j + 1)

5 u7 n* g6 y! t; v, h], i$ j* S# O8 U- @; ^1 `' R
let k 3
& S* w1 |/ A' l+ H$ f, d: Mlet power 0/ W" h9 g' R( b1 W% d
let local 0
9 e8 m1 g/ O) ?/ {% ywhile [k <[trade-record-one-len] of myself]
6 G: l5 w9 k2 v$ d: w+ R) A2 h[: i" {. n. R4 K% p0 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)
( W: j) W, m6 {1 c7 [; T& A9 r- Vset k (k + 1)+ x8 T8 @( x& t4 ^8 X, [/ b' i
]" y5 b4 Q0 V% ~4 _) _
set [local-reputation] of myself (local)
! S. d1 K; K+ L2 e& R& rend
/ f$ V8 K+ j4 U6 v" p0 X9 L' B7 F  w6 e6 U+ m* x
to update-neighbor-total6 l% q! e/ ~  L( b' b

/ w% d; D. I) k; z) x+ eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 `3 E9 I8 [6 b' B. O2 a) g

% U' u+ f$ Y) x& O
! ~( N" T  @# J3 `7 K
end8 Q$ I. G$ r7 e! w
6 I- n0 |, R1 ^: `
to update-credibility-ijl 0 z& w/ k) V+ r# R

% Q2 t+ f! T0 n) ^;;
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。6 B4 _, m0 _# d2 `7 r( _3 A5 v
let l 0
: M7 ]$ O% p, ~$ G6 W& o% @while[ l < people ]
& S* K% J7 x0 H2 G;;
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7 A$ Y2 h0 l. A% r/ V4 f4 p. {5 v
[
3 O& n/ k/ C  N7 v( h9 t. h. i6 d0 clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% _7 A2 `; s! S5 E
if (trade-record-one-j-l-len > 3)
( I- }2 {& d4 d% Y& e7 ^[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-one7 t; ]/ `+ k9 y, o
let i 3
- O8 Q  \, P0 w# e- _, r! ~1 jlet sum-time 0
3 q" n$ u: A, d+ E# {, R  Pwhile[i < trade-record-one-len]
2 m7 u# X5 h: X3 g! Q6 ~[
0 D% j8 ~9 l3 x  `# g' ^4 }3 ^, ^set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ b7 d% m, d6 G6 G: T2 G
set i" }9 q2 ]- ~$ h' q/ C1 R
( i + 1)
5 ?6 w6 C. e" @3 `/ s9 a2 ?! I% T# \; n
]
0 M- X- K& P4 X. O- u5 k* `let credibility-i-j-l 0
$ m. y8 {' I# j* F. d9 k;;i
评价(jjl的评价)0 ^3 S$ b+ W1 ]. |: S. u1 \
let j 33 o1 O" E( Y5 X) R0 r
let k 43 l. D$ f" G9 Y) ]  n
while[j < trade-record-one-len]5 D2 |2 y. r2 ~/ G
[6 P; A  A0 W/ r" t3 X( H
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! I( i9 V1 y8 D9 F
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)5 f. I( u6 @! O
set j& j4 w. N" u. t% ~1 C" H' ^+ M6 q
( j + 1)

* {% |. ^% L. A& i# A]
) _& {5 W1 s' v/ C& O9 m% kset [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 )); |2 z7 l% R9 Q/ {' h& r

; l, f$ E3 D3 d: R1 H/ I
& c- `" s) D( K' P) ?. [$ K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). \/ n8 K; j& U, q& U+ c9 H
;;
及时更新il的评价质量的评价
( z) U) q! g5 G  f4 l% oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ ~3 P) D: O/ F: q/ U- D# D! Wset l (l + 1). p: s* N% d* h# a# ~, U: K
]# e7 r# W/ x1 p6 F5 z6 j9 F$ O; g8 x! C
end
5 W7 l6 [( w, R7 X1 }+ w+ t
1 Z$ R0 H2 k6 T; f0 Oto update-credibility-list6 ?- H' S5 o3 m3 U; m0 Z6 D
let i 0
1 d/ _# C9 _* p' n4 O4 y  Gwhile[i < people]
+ `7 l8 T% |/ x  t- s" ~[! X" w: z, v0 z, ?! a1 M- P
let j 0
9 @( K( Y9 y' c- N4 hlet note 0
) X9 C  E' p- P! E4 P; h7 X& C% Blet k 0
" }) F& c) c' e. t! q- q3 I' o;;
计作出过评价的邻居节点的数目
( {# c. v) T7 H3 B: s$ pwhile[j < people]6 B5 m& w" W+ Q
[
9 q" _  g, @+ T* T7 p- t6 Sif (item j( [credibility] of turtle (i + 1)) != -1)
2 @7 p2 a2 ?7 Q' d, j, C;;
判断是否给本turtle的评价质量做出过评价的节点
# p, ~+ [3 D/ u; @9 l+ T[set note (note + item j ([credibility]of turtle (i + 1)))
# Y' a7 H. z6 E1 h  ]; C;;*(exp (-(people - 2)))/(people - 2))]

) Z2 R; |1 [+ g0 [% i4 {7 N5 Q5 sset k (k + 1)- j  o5 g, |' u6 X
]% M9 G: _9 Y) D
set j (j + 1)
( F7 ?( s7 |% j]
9 L( u: G6 {( ?set note (note *(exp (- (1 / k)))/ k)) C% ^. U& S7 H4 O. v: s0 c, N7 u: ]
set credibility-list (replace-item i credibility-list note)
' s) s6 x* p  Y- Eset i (i + 1), T! A! m$ O4 ~9 m8 |
]
: [, p# `! s( f" N- {end
' ~" e. ?& T! r: u
( E, x' p  N3 j; T3 _) cto update-global-reputation-list
$ X& ~1 @3 D5 }& Wlet j 0  I$ c( N) }+ {) @! z
while[j < people]
6 j' _7 h* t! v% C" S2 D0 f[1 ^' F" J- R) f: ~
let new 0
6 Z0 X  t3 [& u. l" V;;
暂存新的一个全局声誉$ u* Z5 L0 L5 M  }: c4 |6 B. k
let i 0  A4 S5 E: ^, \( F/ ]. l1 Y
let sum-money 05 n4 @4 }; p! ]) X* E7 j9 v
let credibility-money 0
) k+ I4 w9 M& U# Q# ^$ m( Xwhile [i < people]8 h1 z6 Z2 R: G: i$ j) Z5 C0 F
[$ [( s% E% [* K# U. y- H0 i# L) T5 E
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 a* W8 O# G, X4 y  i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* |' b, @3 L& i  k( a3 `
set i (i + 1). l5 Q. A5 h  [9 R3 L
]
& F" E+ r3 }: Q5 dlet k 0
0 p) p4 S% b% F; o. m$ J' p) u  h  Ulet new1 0
- \4 v, m) v5 k# ewhile [k < people]0 i, u) z) ?$ ]9 y, W* `
[
# ]7 t2 R4 i& l" xset 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 o% \; a: L) C2 L6 D, L4 V
set k (k + 1)
9 s2 c0 P6 V7 d* ?. y]
; c9 b( E: [* k" n* ~0 Eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 L% ~8 V/ Y) L( a5 W9 g
set global-reputation-list (replace-item j global-reputation-list new)0 T7 Y2 I( Q' U( f/ Z& Y9 x
set j (j + 1)
# z- N1 E+ E7 E- h]
1 E, ~2 i6 d/ P! f3 O1 ]end  \% t" B8 B7 ]9 B, }) _3 o
: g0 X% _% [6 z  a/ a) G3 G' P
$ j$ E% d% W& r

! {$ Z8 U; M4 c& c9 p" [; \to get-color
7 Q4 h" y7 _) y
. f( J  U2 ?3 p& h2 uset color blue

1 x) ?+ T# e) Y9 eend' K0 ~. d9 D* [: [
/ r  N8 S/ x2 |+ D
to poll-class
- w; l5 s' N* R# A. gend, h, [' |- C% j  c
0 q1 L& }( I1 c" ]  m4 l/ F
to setup-plot1
& \9 m+ H' C! g! s0 O1 ~, X6 U- s# ]) V( \; g% e$ h
set-current-plot "Trends-of-Local-reputation"
) v4 s( P1 C- h/ x
6 ^( W* e  U' W9 f- x3 h; r
set-plot-x-range 0 xmax
0 n% j# c4 P+ @# D2 J1 \) Y$ Q: v; F
# U4 @8 B  `+ [( n. B. l
set-plot-y-range 0.0 ymax

! V& _' `! y; ]end
# @) K3 V7 J2 H# d# A* B
' t1 g" G! |$ ~( E# v; c: ato setup-plot2
( G' _$ x' s, P. a+ e2 H5 j$ w, n- @* s/ ?
set-current-plot "Trends-of-global-reputation"
: z) O$ E! ?9 m/ C' ?+ m
* I  n0 P8 E2 @$ b  J% K
set-plot-x-range 0 xmax

& e: |" s9 G  Y; X! g0 k* q9 U/ n
) \  V- n0 \. ^# x' e' uset-plot-y-range 0.0 ymax
4 \8 a2 a4 ?" z: m0 Z2 d
end+ N& a5 P$ K. }5 \

2 ?, E( a# |# J! vto setup-plot3
$ A' f5 t  V6 }' J8 Q
) P* i: _6 k9 X' J0 Aset-current-plot "Trends-of-credibility"
7 ~" W' t, l' }. S, w
% E8 t0 k1 T# V7 s7 @8 n2 i( U
set-plot-x-range 0 xmax
9 M5 K- d( Q& F. k0 W9 v- }
& E/ \- G7 n6 `2 l, X; a
set-plot-y-range 0.0 ymax
$ Y+ B; Y+ O/ B
end, T) i6 l8 S" j4 u* E- C
2 x, u4 x" u" a. _
to do-plots
0 {) v1 ?0 G" Z1 s( `! G- kset-current-plot "Trends-of-Local-reputation"
; K* F8 L" R3 ?* P2 V& \& ?- Kset-current-plot-pen "Honest service"
% O# `) W4 p2 H1 i2 J! i8 p' N  e9 ~end
4 e2 m( x5 `4 }# z, K3 ^- X* l* t- ]7 k. Y( n2 c6 B, j" o" I
[ 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.
( N# H6 s+ P6 `$ Q- U4 l, @% Y. Q/ c
9 w2 W7 }$ S" U% s% g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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