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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:
8 G4 b4 i# {8 N& d  g6 rto do-business
: g* E6 U& n4 V, f rt random 360
7 S% F9 z( M! M1 d1 n fd 1
) q% z" r  m% c4 ] ifelse(other turtles-here != nobody)[5 r1 n/ c  a' w' d. d) 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.
. d9 e1 Z, h+ I; B; N; X   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 K$ g! Z. F0 f+ R6 o/ L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: e! y, m! I3 Q1 e   set [trade-record-one-len] of self length [trade-record-one] of self7 C, D. e9 e! d9 |: ?$ f& ^
   set trade-record-current( list (timer) (random money-upper-limit))
9 e( A( i. i  @2 P5 ^# p
) q5 M, T0 q8 [" @5 Q9 d" p* v! s问题的提示如下:3 g/ \. X$ M. D, n4 z3 |

5 r5 V/ }" L# U. aerror while turtle 50 running OF in procedure DO-BUSINESS
! S: S0 U- C2 Q, q- l  called by procedure GO; N6 M* y( L/ D0 T7 K
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# j" \  Z5 c- w# ]( M
(halted running of go)6 q( }( D# A# k: D2 R
/ ^  S1 B( D) J3 a$ e) S" H1 F( 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~~( T8 Q; H2 S$ y# u! d: ]
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* H5 C8 d0 M6 v4 s8 D- {, @: R
globals[0 \: A) Q# s' a5 {
xmax) Y4 C( }. t# Q1 [, J5 r* L4 T
ymax, V4 w( I3 v5 C) A1 \+ c" v( j
global-reputation-list% A* k8 b. U0 V; b) W

3 J% P. H/ u$ k2 L7 L) S;;
每一个turtle的全局声誉都存在此LIST
" d3 N0 U/ R4 Q; ~2 h- Y! rcredibility-list$ `/ D9 z* |6 x( P. K8 C
;;
每一个turtle的评价可信度
+ ?/ d0 U; U4 ?% p7 n9 N! b' Xhonest-service1 ^$ W  i" Y/ Z/ S5 R* d4 R
unhonest-service  p  K% T: u. E) R" X: i
oscillation
4 Z: a7 A# L- r! @- }rand-dynamic
' `7 J& R$ ~4 p) \- u9 N3 t]3 L* ~# w% y3 R& Z4 o2 ]% m# `
1 }$ E# g3 D8 ]! R- ]
turtles-own[
3 Y& o: e: b1 ~+ \# F& xtrade-record-all2 Y, |" j; j/ k# A( Q% |* c
;;a list of lists,
trade-record-one组成3 T1 Q. a0 p' F
trade-record-one
7 m. y4 v  q( R0 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" c- _/ C4 o2 l( N* h0 q
$ T' i' P, C' P6 @
;;[
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]]
* A# d" x* ~' r$ E4 ~2 N! dtrade-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 K+ Q" H$ d; E5 u7 Y5 n
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- |6 J* O: V% ^
neighbor-total
( ~: I9 C/ l  W: N+ S; @8 t;;
记录该turtle的邻居节点的数目
" X8 x4 Z) u- c1 {" |4 t& r2 Vtrade-time
* u- l( I0 Q& f/ s# M$ Z) b9 R4 y;;
当前发生交易的turtle的交易时间+ ]9 O- [- s8 h' X. {
appraise-give
( V* F3 d8 {- I& c. J! V;;
当前发生交易时给出的评价& K: {2 l9 e5 }" I9 i; m
appraise-receive- `6 i; {1 G+ |  r1 A' M/ S
;;
当前发生交易时收到的评价
! a/ t2 ?/ b9 J, }9 eappraise-time+ |4 X1 b: Z! K. ]
;;
当前发生交易时的评价时间1 Z6 [7 P" H9 ^8 R. V) U; n- U* u
local-reputation-now;;此次交易后相对于对方turtle的局部声誉, ^, n8 K) }0 N3 v- M% Y
trade-times-total
4 }8 p, p! v; @! O& O;;
与当前turtle的交易总次数
' H( b2 A5 \  @4 u% E; G: ~. A& ?! htrade-money-total6 d/ t: n% g' R/ W& \( p( m
;;
与当前turtle的交易总金额
1 Q* @, V2 |5 f" clocal-reputation
, I. J3 X' J6 n- }# i; d8 Hglobal-reputation
9 E5 k" k8 a- R, d  Tcredibility0 g3 ^0 _: h5 z
;;
评价可信度,每次交易后都需要更新
! g- \) m( r* D3 Q: Jcredibility-all
6 r- i. J7 y- X/ t3 W  A;;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
# Q2 K  e# Y- e* @0 T0 g
5 Y  p: y8 ], f# a;;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
9 \. e& J  s' s# v! ^credibility-one
' e- T) U) g7 D; q% ~;;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
' d7 v- n$ W4 w8 f9 pglobal-proportion5 c# Z2 v2 V4 `2 W2 k, Y4 J" o/ S
customer* N- x  z+ `' j/ c
customer-no
& `' c: a* |4 n, e! z, n  L# @trust-ok
' p: ?  C7 L: W9 f, T* v8 Ltrade-record-one-len;;trade-record-one的长度
3 G6 P' B% y8 D]( c2 b1 B( h' d3 p  z, M
( Q3 o7 |+ n0 T! I
;;setup procedure
& d7 n# I7 @" W. g* _8 K
9 _4 n) z% Q  n% L0 c) `2 H% ~to setup5 }& `: @4 _4 K$ U: R5 R7 ^

2 k+ o; E# A" i( O4 b" Fca

& D3 r2 a, O4 A2 B! r8 S$ E
. h; ^% r5 n/ V- r* t% G# p* g# T. Dinitialize-settings
( W0 V" n% x5 d4 o; k/ r

: N. Z( X. X/ tcrt people [setup-turtles]

* ^8 l; s" d2 i9 `6 h8 W
% d3 f7 R2 k7 _2 yreset-timer

( m* Y* j/ f, S7 |- V: x
" n2 B4 P2 ?0 w2 ^* ^5 hpoll-class
8 H: \& ?* L9 Q8 B6 Z  i( C  I

7 \7 s0 W* u, p7 _setup-plots
* [3 H# z( I5 T3 a3 f3 O

0 _8 J% l/ q4 |. G$ Udo-plots
. ^. K( N1 `1 x; R3 B
end
1 |5 o! w& U% v- P
  V5 ^! ]8 i9 T1 {5 E5 tto initialize-settings- G  u2 t1 O4 d5 T0 {
7 y& z2 p2 \6 l$ g& }- q2 g
set global-reputation-list []

7 {: j% A" p: f- p- b3 c! Q1 e
1 T. I) a1 w' ^1 X: Z# }/ Mset credibility-list n-values people [0.5]

0 A$ W7 m7 t$ p% e7 f9 {- j
; d  y8 r8 @, Jset honest-service 0

; i, P8 y0 e) ^+ {7 C
: E" l/ C1 ]9 U7 bset unhonest-service 0

) Z+ K+ R7 D' I3 ?$ L4 b7 |7 |! W* i5 H7 J1 D  F5 M
set oscillation 0
- b2 V/ U% R6 f6 Z# G9 i$ b. M
- B# |3 S6 K3 [3 ?  Q6 y' P/ g
set rand-dynamic 0

4 m) |2 q6 v7 q& \8 J3 A5 `2 |end3 N8 I, B2 J* e+ Q; G) j
8 \" R4 h! B% G  R. p1 ?4 D2 I  j% l
to setup-turtles
3 i7 T/ q5 G5 a$ C( Nset shape "person"3 y, s/ h) Q) g0 u
setxy random-xcor random-ycor4 \. Z4 ^4 u+ T: v% C% D# Z; s' |
set trade-record-one []
4 a  _& o# u. J6 q

0 C% Q0 y. N9 C/ R$ [+ n" @set trade-record-all n-values people [(list (? + 1) 0 0)] 2 e- D. N* p9 g  L* x. b+ L
% N! g& f9 T, y3 g: v& ~" C, l
set trade-record-current []% s. J0 N$ D) B5 F3 `
set credibility-receive []
- a: `$ s  h5 ^* N- N) ^set local-reputation 0.5( {' V6 w: Y. m& F6 q4 T) ~
set neighbor-total 0+ [4 x6 m5 g$ f  Y
set trade-times-total 0% w& C  _6 H2 ]
set trade-money-total 0
8 g8 k5 `+ f7 J: d9 s" B1 Qset customer nobody6 [0 f/ M  N3 A5 L" V" y- p
set credibility-all n-values people [creat-credibility]
+ e$ `+ W( G! f0 f  y' eset credibility n-values people [-1]
8 `/ n: k. Z1 o2 Y0 a8 }& @get-color% U3 u6 E1 P/ u* m3 B0 |8 ]' ^# L
0 X# q9 T: S' U; V
end
  J! W& l# W' R# G2 u  s. D$ G# z8 a) O4 f6 O
to-report creat-credibility
% G/ v+ f: z+ E3 nreport n-values people [0.5]
, r+ i& N& K. l7 b3 [1 oend/ A" r5 @% ?: p- ^+ l8 y) f3 h

3 M& A; R+ r" ?8 W- Tto setup-plots
3 x% r8 z: V& m, I: d4 s" `) D3 A1 _" U+ k
set xmax 30
+ q7 R5 {# p' w6 C9 T7 n

- q$ M: h: X6 ]: Y& n$ O( Wset ymax 1.0

% I$ K6 I+ l3 n5 z- C
7 u/ g' G4 v2 `$ `! @; B2 Xclear-all-plots
3 I% H. b5 Q. N( y0 }  q: Q" x

* A0 H" Y7 g; v5 Psetup-plot1
# P8 [$ N4 D, S' j% C2 j6 U: A
1 Y+ E6 z2 B6 `0 O6 w, z
setup-plot2
, P$ D( \8 E2 i* ^

. G$ X3 {! a6 B6 r$ V# P( Vsetup-plot3
8 _" P8 |; b  G1 I4 p) ?
end
: j9 O& U, B: l7 p: d! O! F5 `' D
3 |& e7 l! [" F, I  ]- F' t+ P;;run time procedures
# t& }- _" j% Q( |6 [
! L! n1 b) q1 l7 A# sto go! O% @+ M' l; w5 U* C

5 p/ e7 G& T$ n- I+ Dask turtles [do-business]
) I. T( H, B3 ]
end
' A  @8 ]0 L2 T1 o3 O0 Q2 L# H" I# N: g5 S  J
to do-business
& ~' n0 l# ]4 \/ T5 O/ x; {: u
4 g# f  o1 T. ^. L( m1 _
% {  k$ G2 U. g6 M& Q. O/ K
rt random 360
1 X2 F8 u) ^1 o6 g6 U- y  h+ q' e
) Z: x9 [9 E) K1 [& f
fd 1

0 {# _% c% X' @% [& T$ ^( [6 I7 O; I0 ]* `% F1 T
ifelse(other turtles-here != nobody)[
; l; q) p5 b) z! q! L: u9 k

3 @$ L5 `8 V+ ^+ j  v+ _# Tset customer one-of other turtles-here

0 p$ `& |+ K6 e. u$ @: X& d' @4 n$ ^! b% |$ D! ]; y& E
;; set [customer] of customer myself

6 C7 W/ p" p1 ?" y. J& n' }" i7 b6 Y) F" @" N. B$ \5 ?+ ^
set [trade-record-one] of self item (([who] of customer) - 1)
% J4 S4 e! {6 l& n[trade-record-all]of self
# X- K- m1 o5 Z, F, B4 V$ N# o8 e7 F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: S$ E. k5 D- q; {% P; I' x; U  j9 E
set [trade-record-one] of customer item (([who] of self) - 1), I7 [, E, Q6 F: K" [/ R2 K8 z' g
[trade-record-all]of customer

; B2 c9 e% G. g
6 L3 D& P( n, L. y! E8 rset [trade-record-one-len] of self length [trade-record-one] of self

1 _) |( S: e- y* C" v
9 X' p4 Z: R9 s0 hset trade-record-current( list (timer) (random money-upper-limit))
% s0 m8 @  K  H: M/ ^5 M7 g
; d( s$ }$ w- M! h- O: v' f7 l
ask self [do-trust]% n0 C$ C9 t! D  ]0 C% F
;;
先求ij的信任度
- ^; t& g$ i" t3 I
# }% t" A8 p  v: _! ~$ qif ([trust-ok] of self)
' G. y0 {9 s$ V3 _0 S;;
根据ij的信任度来决定是否与j进行交易[  r) O+ ^) y+ K( C, z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; P, t" w8 y! b0 Q7 r
3 @8 ^  `7 W7 v  q[
' z  ~: O. w% l& j, j: h
% y( n* d& m7 s9 i/ H* ?7 M  h4 G
do-trade

, t) E* e* v  r  R: b1 o+ n# x' s7 A7 {: l5 T" M6 @( H4 }6 i+ E
update-credibility-ijl

* i2 h# r2 g3 A. w* h7 ?' v/ j( p7 ?8 z
+ ?. Y5 M# U  U* uupdate-credibility-list  U  W$ C. ~4 O0 Z0 U* c2 ^2 C, @

- W) }6 M" Y5 A8 h9 J
1 V5 W% j4 r5 v: ?update-global-reputation-list

: l( c! L- \5 ?' N4 P, x7 H0 F1 v2 O
poll-class

$ \8 F8 i) H# u% ]- B
! E7 a1 X2 p9 q2 Q% ^get-color
: o. G: }/ B! l" o, O5 ^+ p

2 e0 V( i4 q7 F. R2 `]]0 e4 I" E) @4 B3 z7 K- G8 q

. }2 H( \5 v- [% F; n$ B$ m;;
如果所得的信任度满足条件,则进行交易
9 \* z3 I: J! o* \$ V: ^! w3 ^1 K* e& v1 D6 @
[

6 U. w' Q7 w; Q: }1 |8 m0 w1 h) |9 J& o) j$ g) i6 K
rt random 360
0 o# E3 J7 Q; \0 }) z) J3 m" e
8 ]. D1 c* R, }( n
fd 1

% M, Y  G: r4 }! Z4 A4 q
$ w; v8 ]$ R. R+ h]
# r. A) r5 `* N
) ~- D. v) U# B% o& k/ x' q) [
end
: J8 z' Y3 }" ]" i" y; ]3 p- q; s# r

2 s  I" L4 P& z( ~9 Kto do-trust # v3 {7 S/ ]3 J( e+ r" _0 b& e! [  W$ k! G
set trust-ok False: [! g7 w, t( O! T# Q8 b# _$ E) n
1 b. m0 R6 K: A

) `1 U1 P, Q4 T, b5 `let max-trade-times 0* u5 S* m' ]- |3 O
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, r& F* p# }( K  u7 Blet max-trade-money 0# M+ w9 H1 @1 Q4 z' O
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. E* j6 X$ C7 ^3 b' o5 Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); A+ i3 C! D2 z
! a, k# `/ A; z1 k' `

2 h$ M0 O8 D% b' {8 Q, n. ]get-global-proportion4 @/ D2 l4 d& u0 P7 R$ }
let trust-value
1 x. M7 R8 m: M  \2 M+ G) s: J( E; 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)

. H: t# p. E( G/ E+ Uif(trust-value > trade-trust-value)$ t1 t6 ^: x4 A$ g; C2 w. S1 C
[set trust-ok true]. {3 s( c. w+ r% o% ]
end" q6 t6 ?4 k& G( ~3 @6 W2 v
  O3 ?, d+ s0 W: H
to get-global-proportion* g& T7 K- |5 t* x; s( c' i# p9 y
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% e  x9 B  F* a1 w* V6 J[set global-proportion 0]2 a3 D+ I2 W. ~+ v+ ^4 }
[let i 0% J$ \! E& F3 T0 l1 ?0 m4 D
let sum-money 0
7 B. F6 {; v8 q% j2 h2 O& f% pwhile[ i < people]' n+ y+ t0 e" b7 G7 E6 a
[- v3 }1 S7 P9 T" X4 g& ?, _! k6 _) }
if( length (item i% T1 V) o: l4 i7 Y- c  w2 q
[trade-record-all] of customer) > 3 )

  c0 h6 X& `& O5 K! `' K[' \% g  A; m$ f" \/ t5 f6 m9 l  a/ p- ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" ^; @1 ^% H2 v% q: N
]
! V8 l0 W+ \" ?# {9 ?9 A- F]5 X( j& j6 e+ f, k8 P: \! ^
let j 0
  a0 m5 F- ^- ~& Qlet note 0/ ]& |7 Z( o% i. C7 B
while[ j < people]
/ q$ ~$ d$ n+ F/ G1 q+ \[
  L5 d- q5 g  i6 V# kif( length (item i  b4 ]$ ^) M3 Z/ c5 w9 Z9 w  m
[trade-record-all] of customer) > 3 )

! t2 ^& H$ c6 y1 V( J! S[
& c* j9 X$ l4 zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# S3 B' K9 d  S# k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 }' _/ j6 ^/ h
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], ]# I8 b9 n- K2 ]
]7 e% Z8 P6 |" \7 Q- E3 J
]
* u: \7 H: y! B6 _set global-proportion note
( d* H4 B3 ]4 l$ ^/ I4 @  W1 S# p% D]  C. U" e! R9 @0 Z( F$ ^9 F7 B. b
end6 S, u: C% x% }' e, e8 A
: @9 b; B$ `. B4 C3 I0 f
to do-trade, F3 G: A1 q8 d& O* n
;;
这个过程实际上是给双方作出评价的过程
' R( ]5 w/ V' B7 q4 Z7 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* P! _- p  k; Z: m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( w+ D9 m- n  }2 ?
set trade-record-current lput(timer) trade-record-current
% ]) ~+ K% y! F: S;;
评价时间1 c4 u0 e: H: R7 Y5 O; ?' E
ask myself [
4 M" y2 w0 \- r: w+ }update-local-reputation
/ j# H( `3 O. x  {2 S9 K0 s( fset trade-record-current lput([local-reputation] of myself) trade-record-current
' n" c$ E: e: Y# n1 B3 [; E]
' c6 d0 ^1 g4 L( u+ Iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# y6 ?- w' a- l: s, X7 K" r
;;
将此次交易的记录加入到trade-record-one
  v1 I3 O6 H1 k. Z$ Y: D' cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  F: t& F5 T0 E5 x, [let note (item 2 trade-record-current )+ s9 D8 S/ i( B6 ^
set trade-record-current
: z* ^) a/ ^- R2 g7 U' Y% C(replace-item 2 trade-record-current (item 3 trade-record-current))

4 m" l7 W$ W5 O6 jset trade-record-current
3 ]' o7 \- n! Z  k(replace-item 3 trade-record-current note)& ^6 E# \) t4 x( E) h
: o' Q, B! Q# [8 ^" B

6 t- l/ `; _; A2 Yask customer [. E3 ?: W8 p- f# [( R( X+ `
update-local-reputation5 \$ |5 M( L: k; |1 I) N& j
set trade-record-current9 D: f7 G( Y- C+ H9 _9 l+ r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 p: T2 D) r% h# z]
) @! v: ^0 c; Z( G  b- t. T% Y4 ^
. w/ B2 \* Z5 `4 }
" t: w+ H7 c& X, u  F0 Q( E% t
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ x) q5 H3 a6 D
& {; p- f: v. A5 s% V+ q% @2 @  x
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). C% D& A/ V1 j2 T8 `1 b# k
;;
将此次交易的记录加入到customertrade-record-all3 f. i' o1 }& u2 P. _
end
+ z% _  L7 u, U
# t0 u# f  H  Z- Wto update-local-reputation
4 ?3 d0 U" G1 V1 j* y/ z  C5 Eset [trade-record-one-len] of myself length [trade-record-one] of myself
) _) j& Q0 W. h0 @, W! P3 V" i1 Y" C
# s) @! p4 ]1 L- U# H6 l
;;if [trade-record-one-len] of myself > 3

5 v! [6 P( O0 q) ]) Cupdate-neighbor-total: e- L/ J/ K. L/ t* j  I
;;
更新邻居节点的数目,在此进行: M: {+ c* B, y3 V3 y
let i 3
8 D; F8 R+ |, v/ E5 l% N5 a  Ilet sum-time 06 B* Y! u" M2 Y1 N& E( m
while[i < [trade-record-one-len] of myself]
, Z5 V) V/ q+ f6 y( E  k2 {. e$ Z[
0 s; Q  s, V; Y# o( ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# j" _: D/ [" r6 Fset i6 p0 ^9 \: c# {2 c& N
( i + 1)
# g# |+ t' E2 l/ U0 ^$ @! T8 D3 }3 r
]
! f! v& t5 h# v+ A1 h8 x9 klet j 3
# Z7 M1 b4 Z  o' T- Qlet sum-money 0
) ]( O  x. j, c' @while[j < [trade-record-one-len] of myself]/ U$ p: @! J6 D; Q$ s3 \' k
[/ s: m4 I" {3 v0 G
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)
3 ^# }+ O4 w8 t/ Sset j
! u1 w4 n7 |( `! n6 W! m! R( j + 1)
! ?9 h4 l8 S! _: q- W2 d  c
]7 i. x& C! X6 P3 O9 i
let k 3
1 _* G. {5 L4 s. `% N; b" tlet power 0
8 @' ~! h5 Y3 `  G$ j5 y" ^let local 0
: s# v0 ]8 q, Mwhile [k <[trade-record-one-len] of myself], l$ V$ ^! k" e  k, Y( W: `# K
[
3 T' j5 p) v/ l0 `. \; t6 u4 Qset 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)
  |2 c' u. ]5 jset k (k + 1)2 V  v7 C8 W; V& y
]
! ]7 `+ x( q$ X7 N, {& ^; jset [local-reputation] of myself (local)# P/ ], ^0 b: I
end. P0 m- q/ M) {

/ d9 _7 [3 b$ v# J5 T; Eto update-neighbor-total
; ]  l; \5 `7 c5 E$ }/ T* d0 v$ w: J, N* y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' x1 P1 N7 r1 [5 _
; v+ z- w" @0 }& d6 g) E7 ]
$ Z3 y4 R9 _) s, V2 N+ A! A
end9 j; t; B( Q4 S& ~" g; g

3 _3 J  Y# e7 ^" r2 W5 [to update-credibility-ijl
9 [' J0 w- O; f* `/ G! j8 e, {( Z2 c* H, `! L; D( A
;;
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。. ?* P. ?; m3 G' E4 g
let l 0
2 O% ^3 T6 z0 O, u4 Xwhile[ l < people ]
2 H! N# d+ S2 D/ I7 Z  g5 Z6 A9 y;;
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 M: i& j0 i, V* S9 `1 S
[
6 J/ ~( P) H* i$ X2 [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 G' x* m) M, e; o9 [
if (trade-record-one-j-l-len > 3)5 O1 u- o3 m* q3 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
. C2 m/ ^7 q% C! P& G) n1 o$ G" E) ylet i 3
. S, q: |2 H: E. klet sum-time 03 D; U/ O/ e! A4 f; @1 e1 C4 g/ b
while[i < trade-record-one-len]
7 c$ R, y+ ^7 S* Y9 h' y[% }% U; o+ y: M1 q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 q  |7 L+ t% s* a( J, u1 o: k; \. z
set i) E! S# r2 v6 t$ S5 v% n5 |- J, Z- r
( i + 1)

$ [5 y9 Z5 J9 f5 o0 Q' d]; _% e$ }2 Q; z1 Y6 F
let credibility-i-j-l 0# r& h% ?' t) p6 v7 m3 d9 ]9 ^9 I
;;i
评价(jjl的评价)9 h2 h% a3 I& o+ P
let j 3  b3 o" g1 _# [9 s& k0 Z
let k 4
6 x+ u, \# P  e- A4 b  q; Vwhile[j < trade-record-one-len]' z1 i: e6 c6 q- K) f
[3 N' Z% c$ S6 E! H8 |* |
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
' T$ l  x) E+ S: K+ x/ rset 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 `9 O$ W2 A1 G4 c; Q1 Q
set j/ g. @6 o# B) j! }1 q9 a
( j + 1)
5 X/ O* m; l( X0 R: p
]5 C/ i% Q6 e/ e" D9 g* R" }
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 ))
' C* y# T' ~/ q0 b9 w( R; J# u3 G: t5 f

: B! F/ {7 i. l0 a- Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ n2 b; v. t9 ^1 `3 V9 I;;
及时更新il的评价质量的评价' @& k/ l! {" e* h' Y4 N! w
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! N5 V( A+ y7 m0 u: `+ {' v! `7 hset l (l + 1)* f1 L& b8 L. Y1 @: B
]$ d" |" O4 \7 h  v' D
end1 W! z1 B. G& C6 [9 M. M
5 b5 J( u' @/ w/ R  [, k" k& P3 Y! i
to update-credibility-list/ x% A# Z- z6 F, k. V
let i 0  S& M0 {+ N5 ^
while[i < people]: P% b3 b4 f& V0 z; v& T, O/ l
[- K' s2 o; s! x' j; ?$ g* _
let j 0
8 C; b& A; A; V" Q  |let note 0) u: D! P9 J+ M, _- M: M: }
let k 0
, {6 J* }( [4 Q! f;;
计作出过评价的邻居节点的数目
: s+ y. ^/ n4 b' W% y1 Ywhile[j < people]; @- z; `0 R& P% m" Z
[
* C- @( ]. u- D: Tif (item j( [credibility] of turtle (i + 1)) != -1)
0 ^/ W, Y, _( ^! P# I;;
判断是否给本turtle的评价质量做出过评价的节点
" V  O; F7 ~" m# Q: F8 C[set note (note + item j ([credibility]of turtle (i + 1)))
. n: j6 P9 R& A;;*(exp (-(people - 2)))/(people - 2))]
+ [& h8 C# Y; j: F- F( o
set k (k + 1)1 U0 T: U3 H5 D0 _# V' l6 {
]
" ?& c  f( L! `9 xset j (j + 1)& p4 _* D/ B( D0 B, X" W
]( X0 o4 v. q; i+ t8 [/ e
set note (note *(exp (- (1 / k)))/ k)- `( ^. Q" M6 T: s! N
set credibility-list (replace-item i credibility-list note)
, }2 n2 M7 w) T" f- yset i (i + 1)5 j& z: _2 i* z, Z9 c! L& Z- K
]
1 x9 W0 {2 \9 t* [. kend$ |% _" I! Y  I3 D- N
: h  ~9 E( w* T) L
to update-global-reputation-list9 A1 S7 j. X. u3 I/ a
let j 05 k+ V1 z( R+ N& m  \- [
while[j < people]$ G. L# b# I" V- i' F" f3 }
[/ s4 @/ t0 |  `' U
let new 0/ f# O# _( R- l& B
;;
暂存新的一个全局声誉* D. ~" b4 O7 Y1 \( |/ o0 h/ H# Z
let i 0
9 r. `/ S1 {! V5 Klet sum-money 01 a% ^6 Z3 H( F
let credibility-money 0
6 x" H# J  S$ u- I+ zwhile [i < people]1 [, N8 n) ~" h* P0 L; i
[
. n9 \/ o" p) \: ~$ u" fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); A# T7 M: ]* e( [
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# P% \8 |9 U& p' @  G, k6 r
set i (i + 1)" o0 i2 b' S  R; ~
]
8 G$ o* S/ E" k$ e2 ^4 nlet k 0/ S+ ?# Z' E6 U4 S- A* ]3 q
let new1 0
5 o9 M7 l3 q1 x7 w1 L1 awhile [k < people]' z& t+ B: z8 \; D9 ^& g, u7 \
[4 v. ?9 Q0 ]6 M0 c0 ?4 U
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)' g# H0 l+ a; N/ C/ v; }' _
set k (k + 1)2 P% Z. K( X6 F' I5 g$ d8 x
]
) y& `- K, l$ m" ^+ H. g2 Lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* {6 U0 z: f9 E3 O8 g/ eset global-reputation-list (replace-item j global-reputation-list new)
# H+ x/ r: [4 Z6 L% ^/ Oset j (j + 1)+ E  }& Q, p+ r: ~4 a- m3 Z: r" }' P
]
1 f1 ?, K; _# G5 e) I% f* ~end
3 C) @, M, \. R) |% v5 `4 W6 O- y4 s* T5 j4 K  M$ @& ^& q
8 `0 O; X% j8 x8 g) f4 s

3 s; g) B: f1 u# f- ]4 H: ?! i, @7 _0 Mto get-color( B% q1 g) A% H$ f

7 g* v! F6 Y* U% K7 m9 Gset color blue

7 O; A1 T3 V: [* _end' v' G3 F0 A" h+ N6 P
2 F# Y( n. V" u0 ]7 r1 w; q+ s! t
to poll-class
, D9 [3 \+ u1 v3 F  ]& R: `end
9 r9 Z9 s6 p( ?. t0 Z0 L6 h
4 e* h% C# M( E0 P$ Qto setup-plot1! }( s; L, [/ A2 j5 ]9 [5 m
$ J$ l  m/ a2 k* j) n% R& j$ ^
set-current-plot "Trends-of-Local-reputation"

) {$ E# n) Y+ y. k2 _% j6 ~: J" W3 m
set-plot-x-range 0 xmax

/ b: X/ s2 C/ Z' |' Y5 S, m% s( v5 z& u0 |9 N. d
set-plot-y-range 0.0 ymax
; R  r$ }! A3 ]
end" O3 V. J; K+ X) Q8 d

7 R2 a/ l. m+ p, g) E' q8 e" u$ ?$ D0 ^to setup-plot2
! e+ U, A# I  g. s/ s3 j$ Q8 m- ^- w: K. e1 s) ^8 L
set-current-plot "Trends-of-global-reputation"

8 P2 _" i  s6 o7 m  b4 Y: a8 _+ c. z- R: ]. V9 y8 M
set-plot-x-range 0 xmax
/ C# u0 k, R. {" X
7 X1 A3 e2 B. o& h- R
set-plot-y-range 0.0 ymax
' ^. L# x8 G+ v. m
end
- z; ^+ ]4 q) M6 j
! R- G! |9 W% A( ]1 ]+ Uto setup-plot38 f% c- z4 |$ f0 v. x) V
+ w  f  ?' `5 B2 ?- F& [$ j; E9 U
set-current-plot "Trends-of-credibility"
8 f- [# j6 z# b' C# ]' E
4 Y" W& @# h. N/ J' X0 X
set-plot-x-range 0 xmax

8 d8 b5 Y0 ]$ {+ E' O/ j7 {& [- k$ g, f1 Z
set-plot-y-range 0.0 ymax
* w8 d) Q0 u% q- r. w
end) H% T4 e. x- {( Q0 I

8 x6 H8 J5 u2 K0 H- vto do-plots, ]: M! S7 N5 v' M8 X
set-current-plot "Trends-of-Local-reputation"
+ s! S  M) v* w3 V) u0 }1 u4 nset-current-plot-pen "Honest service"
# G5 I" o% X+ m/ {( R+ aend$ n1 p+ c$ ?. |" S9 @5 @5 P$ `

5 p' A5 R; Z; X- i# i' A0 c[ 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 _8 Y# I% _6 O5 O& f6 E1 g, Z) v
& d9 \# Q% j. r8 r
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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