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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:
* Q  M: k) o" ato do-business " {! \' M' ?/ a1 U' u
rt random 360
$ @' w* w* T5 W fd 18 D, S. }) V" @- ?/ T! W
ifelse(other turtles-here != nobody)[. |, f( q1 q& S9 ~! l
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.% k2 v3 J" p8 {# N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) M* s% k* P& T, j. J: s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; q" `& y& A  Y! o   set [trade-record-one-len] of self length [trade-record-one] of self
* L9 }4 M& A" Q1 K, b9 P   set trade-record-current( list (timer) (random money-upper-limit))
# J; O! R# s+ j1 K$ Z1 Z% ?8 {# E7 l' k( {9 B) N
问题的提示如下:
' J. x7 Z( T2 p2 Z9 `% y, X, o. y6 ~- e0 [& M
error while turtle 50 running OF in procedure DO-BUSINESS! k" J, _& a0 e5 A% S+ p- C
  called by procedure GO/ e" r- O" o* }
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 p; y% C# O- t! @9 e& }# @. g% R
(halted running of go)  B6 R0 l( @" H- R+ f* L5 j# T
+ o) j7 Y1 ^3 C: c! A3 x, g- ?
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~~% J' s8 @5 M7 h% ^8 B' D9 @
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& j  C4 I4 f' k6 e6 b: }
globals[' g0 X: n$ I0 s
xmax
% p/ V+ E* E- s1 T1 x3 w' T' S  qymax
( I2 y$ ]3 M* K3 F% @$ a0 Dglobal-reputation-list. X) Q# t2 q5 `. F3 T& D: R

/ f  B) L# z8 O7 ]" Q7 B- y* _% _) I+ u;;
每一个turtle的全局声誉都存在此LIST
# Y0 q: N  J8 N8 t% A0 scredibility-list: k5 p$ S* I$ u  O; P
;;
每一个turtle的评价可信度
8 q2 c# E3 D, ghonest-service  h8 J$ f. r0 w' Y/ f8 g! j/ B
unhonest-service
) E4 a% X# ~/ x$ [oscillation
1 ~: L, f, A/ y2 I8 Rrand-dynamic3 q; {! e2 }- x# s0 H+ X, A& Q
]
. A# l3 z4 I% j. r* U
3 u: v$ ^2 N* ^3 h+ `& h; N2 y4 Qturtles-own[
1 M- {) ?0 T- B0 xtrade-record-all. d# D5 h" s% P0 B" @* ^. N0 {" k1 W
;;a list of lists,
trade-record-one组成
1 L7 c6 d9 n2 D2 a% a8 C+ Ktrade-record-one! d0 J9 a, w0 d( w7 y4 l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& G4 `4 z( ]! ?0 l
- Y! z, q& j; j/ q# l" I- ~( G* x;;[
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]]
: r9 r& X3 b8 Etrade-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]' ~/ e: u; N5 r6 I6 [
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- i$ h) l7 T% e3 B3 F- T! U
neighbor-total
) T) j% d: t0 w;;
记录该turtle的邻居节点的数目9 d4 h2 L4 j- t- B( f( F  b
trade-time4 S4 V6 ~" Z  S3 C2 g/ B1 Z! T9 j  m$ A! Q
;;
当前发生交易的turtle的交易时间5 N: N4 M5 ]# T$ a$ n; W
appraise-give( ~( ]- j) _$ Q& h7 Z! y: P: u5 T
;;
当前发生交易时给出的评价: j6 G1 t" h6 _0 Z
appraise-receive! T9 _- d# r1 b  d6 x" A% v, X
;;
当前发生交易时收到的评价6 g. e/ k! Y- X4 ?! x) X
appraise-time/ ~- \" ^4 F, D
;;
当前发生交易时的评价时间& ~- \2 C3 h, e1 U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, g% d4 N$ M2 @trade-times-total
7 r/ }' [. W% z1 r% m9 r. [;;
与当前turtle的交易总次数5 r- |1 A# }# T/ b
trade-money-total0 P& e6 t" x3 _% l  l8 u
;;
与当前turtle的交易总金额
  ?' p* S  R2 F9 P; V/ R) d3 mlocal-reputation
6 O- W, B4 d4 U3 O) K7 qglobal-reputation
7 X6 n9 ~, _+ z8 t2 Kcredibility
( u- N1 t3 A1 u+ N: b, F$ v8 D8 i;;
评价可信度,每次交易后都需要更新  G) n8 |' U9 J7 I/ l8 U
credibility-all
+ r0 L0 R5 g& K;;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+ l' c8 {* s  ~

* y) K9 {) X+ N; x4 W;;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0.57 V1 ~: Y% F2 e/ `- F3 J
credibility-one8 G5 T% W9 a6 ], l4 Z2 \
;;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+ e0 d& v# |2 `: P, W" Y
global-proportion" t: E8 _9 M8 i; Y
customer% }, m4 G7 v# L* K3 w/ f) I- K3 {
customer-no$ K/ @3 X2 h5 q( A
trust-ok' i. |; T" q8 ]' S% p' N5 l
trade-record-one-len;;trade-record-one的长度
; O" L* Y, m1 `( [& M& V: X]7 E5 b( T0 U" T) x* T+ A
0 H6 e$ W9 \: V* d  r
;;setup procedure- j6 i- _5 w# u) j% U/ s' W: T

. v' q+ ?" Z" h) P! _* y. C( _) N, `1 fto setup
* P1 a& f% H4 T7 a; J4 [6 b. Q0 E0 b0 ]: Y) [
ca

4 o: Y$ H  i3 h$ u1 h) K2 H9 i" n% @' _9 S1 z
initialize-settings

6 J9 T; d/ ]: ^7 ]- L3 x) ?( X+ Z& b( B1 L/ ^* L
crt people [setup-turtles]
5 _' N4 N7 y5 J- `
' C/ w6 n, v; A4 {8 N
reset-timer

, |3 n1 \) `. S/ [; G' u) Q) A/ \  L5 U) B8 k$ d
poll-class
' S0 o6 L4 w4 k

1 ^$ q5 @$ B% x* l- ~# M. Isetup-plots
% X% e) {; n$ E4 c( ^

" Y5 b. m5 H2 H0 Udo-plots

- j. l! G' q% _; |/ a! @end: o+ T0 }! X+ a" [3 W) g
+ n! E% S6 p1 P7 Y0 X" i6 }
to initialize-settings
- ^$ _8 z9 L/ f. w' ~) ]" H8 h; P* N+ v+ ?1 {0 l
set global-reputation-list []
( h* r1 x3 c+ i/ J) D4 {
' e6 x+ ]) }# Z- M/ H9 M: _
set credibility-list n-values people [0.5]

7 h8 R8 A1 N4 F/ |
1 J5 h3 t6 U9 }5 A, Zset honest-service 0

- |9 b$ v1 C# T# D
1 M; \% Y* C8 k/ B7 Mset unhonest-service 0

2 I& d3 k+ d1 B* I* n1 x4 ^( J  w$ g2 h' g0 f+ I& K3 t
set oscillation 0
( y2 f  J* k7 c0 S

! c1 g% e, E3 Pset rand-dynamic 0

/ d+ E9 Q( N# [2 R, C& ~end
# r, V- Y& l$ f0 i7 G! X
( X2 y' L4 t$ y6 w& H' b+ [to setup-turtles & N2 g- J: u* o+ ~
set shape "person"
* \" U+ c  P  n  j' m% Jsetxy random-xcor random-ycor! C) J: j8 D9 V
set trade-record-one [], c0 c  z# |+ F* A! ~, y- G
  a/ A9 q/ y4 v6 q9 d! ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 M0 D. {9 ?3 Y% Z) `  M1 u1 q( g

5 d" v6 f' r" C/ j6 Gset trade-record-current []
& v& z4 w7 A6 z4 I1 Q4 e4 M) w6 Uset credibility-receive []
5 i" F1 N4 H) J$ \: G3 y! pset local-reputation 0.5" w# k. }1 N) z" F0 Z8 T' e! I1 o
set neighbor-total 0
( B. L! R6 V8 n7 f+ qset trade-times-total 0
4 }: H+ m0 c6 l1 E4 V* l: E: kset trade-money-total 0
  ~: m; i1 B8 u8 A9 Nset customer nobody
' ]' U6 P- [# ]* j+ i$ Pset credibility-all n-values people [creat-credibility]
7 i# j! g; L& n3 nset credibility n-values people [-1]
6 C$ P9 l, G8 z1 a+ s6 s6 Tget-color5 A% x2 Y/ P1 v$ b0 i/ e8 s

& S; E) G# F' w" }, Bend9 J2 W% @2 ?, w4 \- P1 B

) L/ E' I4 [7 O; eto-report creat-credibility4 |* i. k* P. E, D/ }1 G2 I
report n-values people [0.5]
0 b& o1 i$ D2 Y  l2 k1 b* Uend
7 V$ @! b) X( R- c, C5 e
: A( x1 V0 X& ~2 g# Mto setup-plots$ s. b- H# \7 R+ q, k' c& L$ _" a
# A& f* l2 A' B8 V) W+ i
set xmax 30

  y- D# z- X6 i" L
( t4 [4 o& Y& H% l, p2 `3 ?; a$ l8 nset ymax 1.0

" u0 P5 z' y6 F1 M& k
; q) c# _' K: ]( {clear-all-plots

. a/ Y% e' d' H9 A' u# G) l( ], e3 B( K" W2 r
setup-plot1
% A. ^6 r$ m0 Q0 G& K
7 p4 c- f% @1 B0 {/ n
setup-plot2
* Z+ _; O+ ]: _. S
' g, O; z1 _# R1 v% G
setup-plot3

) L; B( _1 n4 z  g3 |4 d9 [& _. c2 wend
5 ?8 w" R: a, c' o+ H1 J; f. ~8 g  Y4 O) E1 u" o. k+ C, j
;;run time procedures$ v+ r* j0 d; g/ L. N$ i) d
4 _: k8 j6 P4 z8 d+ o) x
to go' b6 D6 n: W  @1 B/ _2 ?
2 v; A3 a- C4 M9 t  ]3 p' O/ d4 }
ask turtles [do-business]
; k% y5 W1 S6 w+ |5 ?4 M
end  _# W. v9 n; h" k
2 z! z: w5 L4 u! \* t0 W5 [
to do-business
: J* X* p2 N0 A( T
! W/ v2 ~5 e0 O

) ^& a! E% X- b+ a# \+ grt random 360

- e8 l% }+ s& q- X. k1 h$ s7 R2 B$ P0 M% o" J
fd 1

! W3 v+ L7 z% n, B* k% h& G- Q- i1 q0 N- K0 K: \
ifelse(other turtles-here != nobody)[
( |1 t& i! s4 O! s

2 o/ a$ F& e% rset customer one-of other turtles-here

# |5 X5 s- T) Q) V# X7 w8 ~4 v
7 _$ b! w+ M( t;; set [customer] of customer myself

- T/ s& ^- g8 H/ R) W+ ?  e
8 V! X- Y5 V1 Q" q2 ~+ i5 L( Jset [trade-record-one] of self item (([who] of customer) - 1)
* Z7 I( @) y, n0 k. X[trade-record-all]of self8 y& f6 k2 V7 ^0 H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 _, z( U% M* d

% t, G& k$ J; k* Fset [trade-record-one] of customer item (([who] of self) - 1): Q( |" N. D. i
[trade-record-all]of customer

, ~, D2 L: B  E+ |) j7 P# t
. k- \# U/ ~7 s6 {3 [, Q& `set [trade-record-one-len] of self length [trade-record-one] of self

. B( F8 r/ c1 e2 b8 [! O, }- h0 _
set trade-record-current( list (timer) (random money-upper-limit))
" L7 e% ?% g- G+ `" m

& E. q" \! ]. ~. A/ C) g8 Cask self [do-trust]) R. d9 Y, w" |$ v! b. I9 ^
;;
先求ij的信任度
  A* a' i+ V4 H8 Q! c
9 R7 e" J( p7 Q; g) w# Jif ([trust-ok] of self)
* B8 {3 O2 q; J) y;;
根据ij的信任度来决定是否与j进行交易[6 }# S, @0 B/ P/ W- a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ [/ t: N5 o% Q$ x2 b1 N

1 `( @8 |% y) r[

5 |6 Q( X+ u% E7 H0 K9 `- p
( D, k7 T/ s: {, P7 ydo-trade
; p* o. F+ v) ~+ J8 G" G% r) W* |: \

4 S- P- L8 S3 p. S# q& Bupdate-credibility-ijl
, [. R9 S& n* y) D+ @% T1 u
4 [/ `2 d$ D: e% M. f; b. r
update-credibility-list7 T0 x3 Z2 k+ d1 s, v* \& ?

! B4 K% r+ |/ k5 q/ m6 E* r
: U) r, W. w& P. u/ B3 Nupdate-global-reputation-list

- _+ R" p! `6 X5 U. r
3 c; N/ i: G% ^$ [- r8 }3 Cpoll-class
* ^8 n- t$ C/ q

/ r0 h0 z& r) m8 Z# w  d5 k  Yget-color

/ v: L6 k3 _. h  p. o7 i2 `2 V. l- n. q  \6 v( P6 l2 W
]]" U2 B/ b9 i7 a+ U  w

; Z0 y8 c8 c( Z1 T. f' T;;
如果所得的信任度满足条件,则进行交易
, u( v' Z# g. J3 |6 H. Q5 I' o
% S. h  a% y- t/ |[

4 i  w% B1 B# D& u# G
, c( X( x1 l7 g. x6 D/ H. _rt random 360

8 i, d  p% E, ?% V; c% o
, q6 O+ }- K" Gfd 1
  \+ k! R  z% ^2 i& P

( }, x% u) ]1 |5 G. _, T- n]

, ^1 y5 k. x5 R* ]* k8 {7 s4 C0 p( O0 h+ H7 N
end
. V% l/ X6 k. ^0 ?; x

/ H* C+ B, t. {$ Sto do-trust * U( G' }) Q! Q0 w7 x
set trust-ok False
$ L; B* ~' E# O; B
0 Y: z1 N- t5 `1 D) A

& G: z) Q- w. W, y& H1 C6 c! i  jlet max-trade-times 0- z) L# i* }  A: ~! `1 _% e
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& A6 i/ G, O. Klet max-trade-money 01 A0 ?7 m; Z3 {* ^8 b/ m* E) G
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 E7 C5 ^" h5 Q& D9 o8 Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 T  o+ f3 l3 p7 G( A, ?3 \4 F" Z1 T( u) q  B
5 R; S- N9 Y: X: r4 w3 ~* P) h  p
get-global-proportion+ u* O* ~) v$ ^) p
let trust-value
6 R  _+ q' V/ [3 P* m  j, B5 klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
) H" U0 [$ U  x! f2 ~! J8 o+ n: W2 `
if(trust-value > trade-trust-value)2 l# c" a( a. N* N1 {9 P: ^" W  r
[set trust-ok true]
5 W4 R' E" N: Y/ T  P/ [# }9 tend
" Q- ?+ B* X" d; o* {* {" _  ]0 S" Y+ M
to get-global-proportion2 G; Q! P+ d# ?' f+ Q* f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- h6 ]* t* c, X* p7 }1 K) u# V& ][set global-proportion 0]
7 f8 }1 w3 A4 t/ s[let i 0
2 @+ E) S2 N4 F1 jlet sum-money 0/ m. H- H( \$ L: k- E4 w" y
while[ i < people]. B; D1 S0 j. }( s$ p7 m9 I0 K/ S6 O
[
1 M3 f- _3 f% q# C2 Rif( length (item i
1 o/ O4 G7 B0 s6 [' ~; m7 p[trade-record-all] of customer) > 3 )
" u: P4 U1 |& {' a4 [+ p% ?; L" F
[' c) E* t4 c; E) j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& t$ @( I, C9 q, W9 ?  `
]* g/ C1 |" @6 ^( u2 u# \8 k* V
]
4 x: U+ K+ f$ x7 klet j 0
/ o$ Q* x0 O  w# \# ?let note 0
5 r) ?% Z) g* N2 o, i/ Z2 g* U  kwhile[ j < people]  X* n( D1 C+ c; T
[# d* H% S" I" G9 O7 Z3 s( D; w) ]
if( length (item i
5 k! |* X  F: ], }- R[trade-record-all] of customer) > 3 )

2 X$ \! _0 L- g5 S[
+ S$ {, _' W4 L4 v& uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ C2 ?# _. x3 ^: ?. \[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], O* o0 H6 a: |. R, R
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ M/ v4 ~! o# G, @+ r+ _
]1 I3 W  [! \) V: }
]4 l5 E* l3 `9 y2 G
set global-proportion note/ g* S' L; V7 E: ^
]
& v! p* m/ `9 s! n$ K7 dend
! m9 K: I# r' I" h& e. j6 Y( i6 P$ Z' A6 [
to do-trade
" y0 ~$ J" `  ^& X;;
这个过程实际上是给双方作出评价的过程
! e, e- `* S! u( G; }- n! Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 z6 m: Y) _. A4 X  Y0 ?/ E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ s0 A" B5 n6 D/ _8 S! \* \
set trade-record-current lput(timer) trade-record-current) k7 X" _% r0 o- H
;;
评价时间  \. y: ^  K# r. |+ B+ n
ask myself [1 V' ~2 K" ]6 f
update-local-reputation% f5 o7 z! F. N- G6 \- T
set trade-record-current lput([local-reputation] of myself) trade-record-current
6 W1 S" M! w! z* w% g+ G]
6 @7 A! `: S' A& ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' s2 `; g/ c1 M
;;
将此次交易的记录加入到trade-record-one" h) r0 j6 z& g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 ^: P% l5 i5 Y* _4 g: Mlet note (item 2 trade-record-current )! [. P% a7 ^( ~" O1 B1 J3 D' B. @
set trade-record-current% Y! k% {* }5 q" n
(replace-item 2 trade-record-current (item 3 trade-record-current))

' L+ Q0 M. P, e& |7 E! bset trade-record-current2 w1 W3 j/ N: _& X" ^
(replace-item 3 trade-record-current note)
' p0 g% [% l; t& B" p2 ?9 N! j3 T- v* q  ]! B3 a
8 t+ a- R# H) b  }$ G0 l. m; C; s
ask customer [
8 c& K% n8 j+ T3 q  D4 uupdate-local-reputation( x' q$ d9 z4 g( k7 k* I- m1 m7 n
set trade-record-current! ?# {; T# r3 Y8 f1 ?
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, t; J+ F) N7 q7 @
]$ y/ p% J) G* I6 q) B2 Z6 q: B$ K; a

" g1 S% E/ v' F- v9 v$ t

9 W. T0 N( Q1 b! S5 hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 [) b. Q: F% c8 l

9 u2 C+ C6 j* B! Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 ]! v" F; g0 h, k& k$ |& x$ Q7 r
;;
将此次交易的记录加入到customertrade-record-all
& ?! ]8 b, ~. R( M$ Iend
# x3 ^8 x" ^( ?6 ]) m1 C8 U: x9 @! K& f
to update-local-reputation' I2 p5 o9 v& U- M
set [trade-record-one-len] of myself length [trade-record-one] of myself% x7 L2 z+ H; V$ Z* p
2 A, V/ Z& m" h: g. p& }
5 j: c4 f- s: f1 f; N8 z
;;if [trade-record-one-len] of myself > 3

! J9 L, c& M, [0 gupdate-neighbor-total# S1 O# J; R2 q9 q6 i7 Z
;;
更新邻居节点的数目,在此进行
9 y3 o* k: R) |: [5 }3 C- Elet i 3+ h2 f( i/ r+ \( Q3 y" _, W
let sum-time 02 |; E' x1 A- I  @" g
while[i < [trade-record-one-len] of myself]
: z; g  I0 n/ a+ ~. C7 I[' u* R7 k4 T+ b" d1 u2 t1 K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, y2 M4 J7 F/ u6 ]8 [! [4 Kset i
7 b; w, ?+ D0 C5 U( Q5 h$ S( i + 1)
; c7 p" I; K# J, N) r
]
- X  ~7 D8 u/ `4 _8 r$ @" Xlet j 3
6 J! w. K3 R' H" [8 u. dlet sum-money 04 X" \4 t2 U! n5 P  r) ^# y/ {
while[j < [trade-record-one-len] of myself]% |3 Z- n- J# d/ a4 L& A$ k
[
1 h6 Z, H2 k& H  Y' V0 Nset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time); Q* W# S3 i; I+ n8 N# k: M' C
set j
) q  f  _+ S4 o0 y4 @1 \4 r! c( j + 1)
0 X) l4 P) ?# f3 H
]
' O5 Q' \" G6 f! X7 {! [3 Elet k 3
1 P& ]+ a0 ^, m' R- l9 {let power 0
) Q, z8 @7 ]0 I7 Nlet local 00 ?" ^" v9 Q9 O4 Q- K' [
while [k <[trade-record-one-len] of myself]% U' e, T! I$ H) t4 M
[! ~8 \2 q" W( b7 ]7 g; e& J  B+ 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)
& q. e% m  v$ Q& M5 V" ?! M2 I! r. d! \set k (k + 1). U8 I; o* E* b
]  ^# U5 l4 X0 P& Q) q
set [local-reputation] of myself (local)7 H& u& o8 o7 \" n7 n
end
' h: [" A) P( |$ B& u6 f& ~
" k7 i: [9 E0 Eto update-neighbor-total. o( h8 n) T0 k' `7 n  l5 P

" Z$ u1 F: _. u. `! M2 m6 jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. a/ p) w  M7 D6 |) i$ T% e

0 e5 Y5 R6 Q8 m5 O
% A2 r5 s% Z1 l  p4 k
end
# r4 K. o, T" P. v" X/ a. N
& Z+ |, @" S3 R! Zto update-credibility-ijl 7 A6 i: K* N9 [' |

; r5 `+ }# }& `8 ?$ v/ c5 R  `; w7 e;;
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。9 u! V6 ~2 |1 b# _9 b
let l 0
/ V; J2 `/ {( p4 A! z7 W, Dwhile[ l < people ]
' t; \1 @: X1 Z- |: K1 h;;
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2 ]- |# P& E9 p
[' z) f) O; I9 H+ u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 l' \9 P0 a" W; g5 q8 ^& y& i. J
if (trade-record-one-j-l-len > 3)* |- w; _3 D% t2 r9 f4 M
[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
# C% g3 ?( ?4 j: Slet i 38 g/ @$ d" ~# U7 F: E+ E% p" e$ Q
let sum-time 0
& V6 h0 T  Q, d& G6 ^while[i < trade-record-one-len]
! d5 M5 R, C; y) S4 `% y5 G2 K8 n[$ m. @" r( f- I
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 j3 A) Q. x4 n  F& P. x) g
set i
9 @% z8 }0 e9 H  e( m: @4 M* c& h( i + 1)
8 {7 \3 p  F4 u" V# u
]
. f3 z% x* D2 m. @$ q, |let credibility-i-j-l 0
& e# i5 ?5 s. Y5 |: N;;i
评价(jjl的评价)' y6 D: H+ j* E  m) j
let j 3/ }/ u0 P/ B, c: r" X6 Y
let k 4. ~' ]& i$ H$ k' T% J, i
while[j < trade-record-one-len]; L9 i- n4 f( E; c( N& m- z
[
" K! ^7 }% q7 h6 [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& y5 \6 U' X6 p8 \/ H1 c
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)
. Z5 L7 k: {- Mset j
. [4 M% _2 ~, V2 y; [" [0 V( j + 1)
5 D6 w5 N+ ]* N+ J) t8 B4 g
]6 C- M8 ~4 w3 D" u- f
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 ))
+ S0 L/ q9 G. b8 D& i% E
4 X$ j9 [4 x, g4 H
+ M; ]; J5 m0 l, {# d7 |/ D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% o: L3 j  q5 Z2 R7 Z+ U- w3 Q;;
及时更新il的评价质量的评价% G4 {. q9 l& b+ R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; _0 N- r) a. h+ D, k$ w8 Xset l (l + 1)% T1 Y3 w, N: u  V; d
]/ U0 e6 g8 E7 t7 J2 L/ D4 O2 ^
end
  o; K0 V% B- k" D* \
3 S6 a+ P; c: hto update-credibility-list. s) B; A, O) U* T# P# t% j
let i 0
; k1 d* c& ^( t5 C9 ~while[i < people]5 |% q# m0 M! T1 z- v
[
$ e' w; B6 ]; b& x( ]( wlet j 0
; p8 v+ P" Q; ?) X% ?- ylet note 0
. N- \: E9 ?$ h0 M6 ^7 Ylet k 0
1 @' z" }' L  V: n6 n; ^8 n;;
计作出过评价的邻居节点的数目8 a) p' L" K. p
while[j < people]5 t( T) {6 v& x
[. j' [/ q) ~/ i/ V# [0 I6 s5 d
if (item j( [credibility] of turtle (i + 1)) != -1)
8 H; p+ `" U2 _: I/ Q% _$ E, u;;
判断是否给本turtle的评价质量做出过评价的节点
3 H# R; y0 H4 }, v, R- ]* k! _# m: @[set note (note + item j ([credibility]of turtle (i + 1)))
5 |. H! Z) d, };;*(exp (-(people - 2)))/(people - 2))]
& F" T: M" @1 ~) X( _
set k (k + 1)
0 r& _1 M7 r: r3 _9 i7 j- `]$ ]% ?9 B- k1 I  l- j
set j (j + 1)
9 k2 z4 e( d  p  \1 |9 F. B2 p]
' W+ L- L2 Q* |  |set note (note *(exp (- (1 / k)))/ k)8 u# l% J4 m# u4 u
set credibility-list (replace-item i credibility-list note)) _* [+ m9 R) U" s4 [
set i (i + 1). R& f2 E. h& c) G% Y- c8 r6 G
]
8 c7 p9 H- `$ O5 q9 U. Z* eend% X* S" F1 p% [% @
2 {+ O# z; t. Q; d  ]
to update-global-reputation-list
+ W: O$ G4 ^$ f5 ^: Alet j 0. {/ ?) Z+ T5 g; s7 X. r
while[j < people]
( R& G) W' k7 z[% `" y' r, q# D9 c1 Z  k* s  o4 L
let new 0
: f" E* f; Q+ w+ {;;
暂存新的一个全局声誉7 b, y/ f2 r4 s! B* |$ e
let i 0
& l7 E- y0 j9 z/ I# Nlet sum-money 0
- K! E* M+ J7 J4 }let credibility-money 0+ e; D3 ?0 K) _7 P+ P. s, Q7 h3 r
while [i < people]8 j$ M: l+ L. B# q3 P
[4 l% v9 v( ]) ]9 c. ]" ]& j; f
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 Z- @1 Z5 P1 }  l/ i9 `7 z( }8 \set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! g6 N* D. l! Q; C: U% }/ W8 O
set i (i + 1)
) {  R5 }# N+ L8 B+ G: c' h]
# L4 Y! {: R: R/ |4 R; \let k 0' O: T1 G5 H9 ]- |0 T
let new1 0- q' q- J$ R; m& ?5 H% \2 d6 w# X+ @1 ]
while [k < people]0 v3 L: X' @# m8 [' _& S2 _
[# f2 w- u+ S* f6 x  W( X+ {
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)
" O2 T8 t9 l$ G) K6 R( Lset k (k + 1)
- Y! h- P* S5 g1 F* Q# d& Z]
; A6 C6 Y3 t) c2 vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
+ j5 O6 Y5 ]$ T: V9 o# x( \set global-reputation-list (replace-item j global-reputation-list new)3 G/ r* M; R% o) _" [! F* @
set j (j + 1)
) Q2 h' E1 V4 y# d3 z! M6 r  F. H: A]
+ x% X: \' Q) r& \+ Q6 L  q' wend
0 I: g% O& q/ G$ s1 _1 E
% W9 v4 G) V0 j, U$ j1 L8 l3 T- I, @& H; I0 d

* Y2 x2 g+ X5 _8 p) U) ato get-color" c: g' d, e. _# t1 P

/ Q) K- P+ _, rset color blue

* o- p6 `, @: C0 V# v( \  _+ E5 ]end8 t6 |5 V3 ?+ U1 `4 y% v
# I( i5 A- Y- Y8 t3 o
to poll-class
! I8 s4 ]7 p" C* X4 m5 c7 I6 Kend9 w: T- N6 p! Z$ z* E  {& ~' m" h

: }) F) R/ a& K" o! O* Y+ @& u$ Vto setup-plot1, [# p: L: L, d# A& l

5 s" {; F7 ]5 T4 ]5 hset-current-plot "Trends-of-Local-reputation"
. L8 G) o& Q) Z, K2 R

5 Z" z; W6 p& C$ aset-plot-x-range 0 xmax
) ^5 W2 d9 V; g* o( B- `
8 I4 W/ L- J) n) N
set-plot-y-range 0.0 ymax

- }; u: x6 E1 _7 k3 \( ^/ i  Lend# m3 X8 v% d1 M/ e8 i$ @. O

) U$ ^3 L  A1 r& Q* N6 _, kto setup-plot24 k9 J, e# I; f: U5 y- }- V2 i4 g2 H
1 w/ f& p! v! F/ D
set-current-plot "Trends-of-global-reputation"

1 p) B& C& _- M% Q# K% Y! g0 i! F
set-plot-x-range 0 xmax
" q. V  U0 V+ O

3 G- q$ H% v& J% R! \set-plot-y-range 0.0 ymax

" c2 _0 |( \' a0 A1 {2 ?. x8 w, Eend; O3 h* j7 p" Y3 s

% ~/ G: Y" y+ M  j- d' Lto setup-plot3- d5 T4 P0 t1 F4 P: A

( j2 S& ^9 e! o( s/ y* p4 Bset-current-plot "Trends-of-credibility"

* a/ y7 S0 n( a' Z9 s% n* @3 l6 u- W8 l8 y7 {, e% \
set-plot-x-range 0 xmax

- Y; G3 Y0 @: K% a: `" i3 Q) `5 I% l. A
set-plot-y-range 0.0 ymax

" J" K$ b' q0 \0 Iend5 o/ O* Q' J$ K) |8 [
! f" r! q4 y, `8 H
to do-plots
- N! M& i. K' ]6 D. h. I2 Yset-current-plot "Trends-of-Local-reputation"# C" X" c) I+ w, ^0 A7 |
set-current-plot-pen "Honest service"
& t* H' t$ R0 W6 [/ tend; r5 R% J5 h1 u0 ?, v: z
1 t6 n7 N  H/ `/ g* ?
[ 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.
2 m) o& J6 m% w% x2 e. u  |
# e' Q0 a# c% {" d  \6 ?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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