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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:
9 n) ?/ J% I4 z* |( `7 Z5 Jto do-business ! Q' p8 e, H( u6 ?
rt random 360
! P6 H. Q4 ]& E" l' A! v6 Y fd 1
% P4 t# `/ g! A7 E* f: O$ ^ ifelse(other turtles-here != nobody)[2 |- n/ v6 [1 K' ]5 G4 F0 R' }
   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.
# e- j, `8 ~1 {( ^2 [0 g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; e& d7 K7 Z0 U7 G4 n& O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) ?# `4 W6 y. t6 H2 G' Q4 |. P+ b   set [trade-record-one-len] of self length [trade-record-one] of self: l  @8 c3 h2 d: X' ]% ?- i
   set trade-record-current( list (timer) (random money-upper-limit))
& f0 n+ b+ z  z* v5 a9 N9 s" W: H, |3 U- h
问题的提示如下:
% R. g. H8 {, n- _( N" Z- L  ^1 o2 j( S/ |9 ]9 f- a! A7 _
error while turtle 50 running OF in procedure DO-BUSINESS, F1 Z/ ^7 [1 ~" Z; e' W# U# D! B% ?
  called by procedure GO
/ t, q" f* g$ m# L/ o8 iOF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 P8 z3 A# s& H$ p- V! y6 m
(halted running of go)
( q  q2 `8 y- J3 E
0 F. B+ y* d8 U1 r, S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~~. ?+ @3 [6 |4 |2 S7 [! G. E
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+ P, G8 u/ A$ f" T4 b- C' r$ t$ Y2 N
globals[
6 g( ^1 C- @, W; T, r2 y0 ]xmax
) w" Z% w  R) Oymax
! R* T) z0 }. b" W, k  y2 Gglobal-reputation-list
* w% Z2 K& E, F9 \( n4 t2 m$ J
* G. ?6 A, `( D) V. ~;;
每一个turtle的全局声誉都存在此LIST
# Q. w7 y, }+ c7 s0 x$ T' Q( }6 Qcredibility-list& l6 d# A( j7 q) K: _; K
;;
每一个turtle的评价可信度" }* _7 v0 _; `. l9 |3 m
honest-service
3 ~4 g9 {7 {/ L1 o0 Kunhonest-service
* A5 K# L9 ~/ Z  ?* c# R" L* Goscillation
/ X4 T- U: ?! C* Q5 vrand-dynamic  P+ [% w7 K) h: g" U
]
9 t! x& x. |& x! D0 E4 N9 U# b" u  y* {0 N
turtles-own[
& W- h4 ?& t$ {% ktrade-record-all
" L, {: x) Y; N; m! o! o7 X;;a list of lists,
trade-record-one组成
- h: w5 N1 d8 e, u2 T1 X8 Y0 ?. otrade-record-one$ ^" o& y1 S6 J$ E2 c- b8 @7 x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 {5 r/ Q) L5 N2 F7 I1 j
& |; f  i% F- i' h2 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]]% k! p8 M7 w/ e$ P9 Q
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]+ C- K. O4 {& c6 u
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list6 w+ K. o) Z9 z) K9 w
neighbor-total1 h) T& s( C. V1 f" m# Y
;;
记录该turtle的邻居节点的数目2 X& d8 J( O6 N! P4 a+ \4 G
trade-time  o( u/ F+ b2 q5 m( a1 _! Y4 {
;;
当前发生交易的turtle的交易时间3 u5 C8 h" {( s& N4 d9 V
appraise-give  Q0 a; \$ r& S; a3 ]! @5 }% m
;;
当前发生交易时给出的评价
( N7 N$ @  d0 M, Q  i/ @appraise-receive$ A& z) Y7 W( q" g
;;
当前发生交易时收到的评价- \4 ~" w3 m" h# O* w5 k! m
appraise-time, Z! K1 X3 a/ t
;;
当前发生交易时的评价时间5 f6 Q, M# _  N1 T. k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 F, L' d5 X* B+ f- j; }: O) Ctrade-times-total
7 `" i4 c8 ?" c% v  p;;
与当前turtle的交易总次数' F1 W& U7 L2 Q( n6 A+ ?
trade-money-total
- v$ G. y! E$ W* F;;
与当前turtle的交易总金额
& C$ k3 @$ [0 E7 K2 ?; r* Zlocal-reputation5 A+ J6 R( }( p
global-reputation2 g* f& X% D/ m: C0 E
credibility
, p6 m) v& O3 t$ ]; R9 o9 B. D. `;;
评价可信度,每次交易后都需要更新* X& w- Z, G$ j9 a  D
credibility-all
" L4 x/ `/ K0 h6 Y* J;;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 D+ u/ R/ u' y6 n

  O  T  N2 r& _3 b1 n! o: I# E;;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0.58 Z' d( M( X) r: h0 R! G. Z1 j( u
credibility-one
# D& V& k8 U0 J/ a0 k;;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
9 h, C- N3 Q* H$ s1 @( O7 ~global-proportion
  D: M+ r) z, a* Mcustomer# G1 |2 l/ a& A. E+ l6 |+ N" W
customer-no( K- v! _) |' e5 \) H
trust-ok
0 q2 ?9 b) @/ W5 T, d3 M' s1 E% ~trade-record-one-len;;trade-record-one的长度; T! S8 l/ h( r/ q  m) M
]  l. L; g5 H% ]" I! C) P. A/ T

6 D8 s/ g6 Q# v! O7 h;;setup procedure
1 Q5 [# N7 ]: W. m% F  H; N6 P& Y5 R& R8 m
to setup
5 E+ h. q5 @8 a9 B5 ]; n% S; Y7 e* C
. L0 @8 W' W1 \9 h, Uca

! E/ j' K$ [( V1 j
4 s& [6 c" {' Y6 ?( }' uinitialize-settings

- |4 T- o1 p' I/ ^* @
( k4 ?2 l  B& S) l; Lcrt people [setup-turtles]

9 [5 P7 j5 ]9 @( {+ K- k6 }+ H9 a; C' a0 {; X, S: @
reset-timer
6 S1 z; v- F( f! I. r

$ T+ T1 \; \4 T) {" ^9 i6 ]: Npoll-class

4 V2 E% T. O; C; v; |- C) Q% E
  a% W4 {! x! y, gsetup-plots

, j7 F: g3 A. F. G, k
1 g- H5 E! x4 o3 c( E/ Qdo-plots
$ d3 D, @! O$ H# E0 a2 X
end" f3 {3 e0 d4 |$ V( G8 F4 f
2 Y7 W' `% A: p7 D: @
to initialize-settings, J( C% e6 _, m5 L. O" N/ ^, \

. N# e- s. S6 c4 ~set global-reputation-list []

8 h" B7 j0 H& o; |- J2 H  f  T9 y2 s6 u1 a, S
set credibility-list n-values people [0.5]

8 `1 H+ o, U+ `: ?) @: P7 k( H4 t9 `& y' l3 C# b+ m, v
set honest-service 0
" r! i' E/ [/ j% Y: o$ y6 o$ U
' w7 `3 _% ~. I( _9 z
set unhonest-service 0
. ~1 |7 |1 \' _& J; ^5 V- \
, J+ m- {3 K2 Y
set oscillation 0
, b& F/ g4 B6 W' |

7 y+ q, ^& }* A7 ^. j8 |( Pset rand-dynamic 0

# A- E, O! O) x. C( qend" ?8 i0 M( }/ g* [% z' e

& ?7 e  [+ i' ~; m0 E: }to setup-turtles
6 F' n2 q; f3 L. A1 vset shape "person"; N- y/ Y. z$ a9 P# C
setxy random-xcor random-ycor
4 z! O+ e, o5 q6 E- C4 j# I: aset trade-record-one []5 i" L8 m2 T6 q) u  i2 z
$ g1 p1 D! {' w: y& \8 {, ?2 X% O4 l4 y. m
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 a3 r" j4 a# e$ G) b2 r# h

$ \% d) e( h, z& C5 Y2 Q( i, gset trade-record-current []
0 O# \: m6 h+ t+ x% Y9 @; `# P: L2 Wset credibility-receive []
, x  s" R0 g3 F8 `9 H/ }; hset local-reputation 0.5
0 H- m0 M8 n0 A  p8 X- K' mset neighbor-total 0  F5 j( J8 N( M+ v
set trade-times-total 0
. K( h9 t0 @3 K$ Z5 O. Y6 t9 p* E+ Dset trade-money-total 02 h! @# W2 U; y, [, w8 u$ d
set customer nobody
/ S- w( b3 R6 \" V5 xset credibility-all n-values people [creat-credibility]
1 b. |. O  p; u) t7 iset credibility n-values people [-1]
6 c7 J# `4 T$ Xget-color$ a. \2 K7 t; u0 a$ H/ U

! t' c; T( O8 Z! v8 lend
# h1 ]" y' X  V' H4 W& p
7 k6 P) @/ |6 w1 W1 q, nto-report creat-credibility
9 `% ?( U) u( sreport n-values people [0.5]3 N) d2 ~0 n0 S5 o; B" F5 p
end
# X4 V0 n7 }! q, a! ]
! `* R9 o/ h; Q  B2 D: V. |6 Ato setup-plots% E! c9 S# j7 N% Q

' _) S2 X) N% j, y3 m" Vset xmax 30

' C6 j7 t9 l+ K2 x; a
7 k  I! k8 V8 O7 @set ymax 1.0
% `% w7 q4 Y0 h: I& H* E& |: X3 f
8 ]5 E9 @  z" ~  f7 c
clear-all-plots

9 s7 b+ Y# q) [8 Q3 [) {+ U& }$ `1 R  y7 v
setup-plot1
  D$ T6 z) {4 O7 _* x  \

  y  p- r3 @( c4 t' P9 _; Tsetup-plot2

' O8 v5 s( b( V* G
- e9 L' a8 c$ V5 l, t- D& n- z% esetup-plot3
/ B; O  g+ y- ~7 F: l; D
end
( O+ w; h& M" l9 }" K9 M. }! K2 K. d* o
;;run time procedures
) }3 [7 p. h0 C9 F! |1 N8 }1 y( N
& n4 v! \3 U* R) Qto go
! f  D/ l0 X2 Y9 A' l$ g
, d+ E. W. q; w$ c) ?ask turtles [do-business]
. D3 r) A/ [7 G: Q7 K
end
) V. r: n2 I! v% \9 ~6 |
7 p' x+ P1 q9 w; E( u1 `to do-business
, s, x! _7 {2 |/ _2 t5 u# ?
3 m0 U2 f- X0 d4 j+ X
; p4 e7 i# M, h" x
rt random 360

# ]3 x& J- h3 D( t$ w* A1 c& d5 H7 L6 B
fd 1
' K3 H8 A2 z8 D* x& S. B+ N1 S0 n

% t/ r6 d! Y2 I5 b) J' jifelse(other turtles-here != nobody)[
8 h2 X  y& \' Z6 O

% T9 ~7 G% j7 P) s* ^1 @set customer one-of other turtles-here
) |# `  V4 Z. N) ^0 V- V
+ m" P2 P: |0 |
;; set [customer] of customer myself
# M3 d- X5 G2 _- G! Y

9 O' J5 [! ~; h, zset [trade-record-one] of self item (([who] of customer) - 1)
, a' G# d4 x4 W8 r2 D[trade-record-all]of self
  [! g0 B! P$ Z- H: p$ m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& M2 k& W! h4 t3 A, C; `) J* U
% h6 V( H. r8 u8 p2 P* o; i  C' yset [trade-record-one] of customer item (([who] of self) - 1)
- p, I& s; ~# {& s/ {: M0 @7 O3 a  X3 v[trade-record-all]of customer
' a( D3 O* k  A' L0 m' o/ G
0 E6 Q3 e" `8 Y$ B* e  B
set [trade-record-one-len] of self length [trade-record-one] of self
/ B. b- W$ T+ V5 C+ P2 n
! D3 u# L( v+ v) A: i% ?- A9 C  I
set trade-record-current( list (timer) (random money-upper-limit))
% g3 ?. o  [6 j  k, w, v

" E+ f, X9 X  D( O, Oask self [do-trust]3 u- J! v7 n* v5 n1 ?# s5 g, @
;;
先求ij的信任度( M( }3 R' X" z8 o7 }6 K

# {: G4 m$ A9 ?% p# z- V$ l. Nif ([trust-ok] of self)0 M  [7 Z+ S6 h- x: R
;;
根据ij的信任度来决定是否与j进行交易[% A/ j( z7 |1 d! J/ o1 L, G3 t3 s: x3 A
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. q/ o0 L+ W8 \; @- c/ m

, B! e& |) I( W# R2 ]- p[
. v# x: L1 l7 z0 U
5 o2 N* ~- `  r8 v
do-trade
; S# \. Y! M  _. l4 m: Y7 D: _

" a" x' @! j4 C( m% R, w' iupdate-credibility-ijl

& F$ f8 g& S# W2 W$ a$ r; B1 G7 q2 P7 |% o. g- Y0 F- g  S
update-credibility-list* o1 R6 s* M. Q5 x  U2 \2 |$ e9 K% V

" k$ j( v; K0 S, B. O# m; N1 X5 e1 x" W
update-global-reputation-list

7 U) V+ ?' T5 `# b/ I. d, A, {. C5 G5 n* G' D# H) Q
poll-class

& j2 c6 A# L1 f
$ g9 V% F9 \" xget-color

5 b' R  a: M  }1 t& Y: C, R# }7 x
]]3 |+ _4 h4 x. ]' T, s
5 {: a0 I; L# Y7 A) }; q5 A
;;
如果所得的信任度满足条件,则进行交易
' S, ?# r. m' N: Q, L
8 d- d/ ^7 f9 R5 [: t8 Y[

3 x& S3 v4 f* h0 J' K& Q! g
  z- E4 n. |" ~) Nrt random 360
. ~) F& c( O8 R. q$ d

0 G- ^8 j. w+ X# Y: Zfd 1

5 f, B. ]( Q1 Y0 f2 [. A4 y% R: o/ Y8 }! z2 w  b+ ~
]

; O) W4 c9 Z  \$ a
# k6 Z1 J- G9 ]! G& _9 ~end

0 \. i& H( @6 @- J$ S3 z
: s$ L. C5 E! L. }$ I7 I1 Ato do-trust " q$ A7 v' g' }! K0 Q5 F
set trust-ok False# ?3 A0 S+ e) T5 }  l
$ E! L+ e2 C1 V2 T

$ J* T" r9 U9 N  G4 k: f# m/ Blet max-trade-times 0; W6 J5 X* b( `  U
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# B1 Y; R% X' b: Y, Flet max-trade-money 0
$ ~- c8 y" y; b4 T0 P- K' ^: [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& w) W2 V$ P. m) h% \. J: ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 P% }6 W6 b! n
7 |  v8 {) r- j; Z. }- Q

- U+ s. x, E: g/ Qget-global-proportion
6 p! B+ ], `5 O/ ^+ {( y( `* a- ?9 Zlet trust-value
$ l" a. V) d! u- A. h1 V& D0 O% Vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( S! L# ~, H3 T. f  L2 I. Y& {if(trust-value > trade-trust-value)
& I0 v9 Q) q; R$ D/ M[set trust-ok true]6 s/ K/ K) L  Y7 q0 d& d& M- k
end
7 m- p( m$ \/ c5 a+ Z; r$ i
# }' N7 m" {: oto get-global-proportion
7 v) H3 e) t* M6 _' W3 cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 |7 u2 A3 W2 }" x; h8 O
[set global-proportion 0]' d4 R6 @* Y6 r( ?1 W" }. i4 A
[let i 05 j, c1 }; E' E' K
let sum-money 0
5 U' x4 d" x+ M. H5 ?1 {! }while[ i < people]6 @4 z# u4 w# x: L6 }
[
2 N: a, ?- |" F% [if( length (item i& f, R; O+ @; a2 b7 g  l# X5 ~. J
[trade-record-all] of customer) > 3 )
& }1 j/ E0 i6 }7 k
[
; d' g( H. J6 j3 C' Cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ z4 u9 \: G4 s; f4 M" @9 ~% []
3 l! o$ g" Y5 U/ _% N; N& \]
0 R, z: R6 t7 J  N. m' p1 `let j 0
6 z/ d! i8 I( u- }4 Ulet note 0% a$ K4 ^0 J5 p* ^
while[ j < people]7 {) T' E- ]) o
[
' z  S" j. R& G5 g" Eif( length (item i
* x3 \9 o* N' F' e% Q: a  ?[trade-record-all] of customer) > 3 )

6 E. i2 \8 [$ C[* d0 e' E# D& k9 }3 p
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 J# _! S8 P( E4 \7 W( e
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! S  [) j& u7 R8 s- b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* T! g) G8 ~  Q0 I! L+ a
]
) t/ Z9 Y3 v* p]3 ^$ P6 D# \- L) e
set global-proportion note: b; `1 K) E9 p3 m
]( L  ^5 Y5 B( {9 l  t8 O/ v4 S
end3 z, o1 v- n  c3 F6 N# Z
$ ?$ g3 \# T  u9 m% K" S. G  J
to do-trade" E- _! |+ j4 |, X  d" O$ ^2 b. L
;;
这个过程实际上是给双方作出评价的过程& @$ h; _4 z# R* j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; H5 y7 E; y8 @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# b8 K$ U. ~; i& d$ N  P
set trade-record-current lput(timer) trade-record-current+ ]! ~1 N0 y% S/ f' }0 c; Q  }
;;
评价时间
- ^9 v, _. o* l* Wask myself [
8 E! d7 c/ n  v7 z- mupdate-local-reputation, M; x" m/ B. e, w) B% ]8 g. x
set trade-record-current lput([local-reputation] of myself) trade-record-current
* i) A$ v, ]" S& t0 _6 ]0 v  y]2 {, h9 H) u" m) o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) I- g) _( f. H# c+ N;;
将此次交易的记录加入到trade-record-one
$ C5 o: u! L9 v5 }* y# h5 B2 G; y, zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' ]. d3 R& k# f+ s# E5 Llet note (item 2 trade-record-current )
( P3 O0 }6 U1 D& r1 cset trade-record-current' u9 k9 V, V  B9 U
(replace-item 2 trade-record-current (item 3 trade-record-current))

  a, ?& v. y7 B6 t, ?0 rset trade-record-current
* m* Z7 V: r$ A- c; R(replace-item 3 trade-record-current note)% A  F9 u6 I4 y6 Z2 [

9 m) q* R7 A9 @4 L5 Z
2 Z7 H: u/ s. L& F
ask customer [9 E6 P8 A4 t4 f- G, u5 v4 C. K- U* s
update-local-reputation
2 N1 N4 I+ k6 ?: k0 y6 j2 E" W  fset trade-record-current
, Q4 K; l  x* f6 M/ X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 f+ z* z: l# `4 O2 p4 u
]+ k$ r0 F5 w  l* M+ R# g
+ J1 d. M3 y/ ?' S5 ]! b/ k7 k
8 _  e' G3 i: s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! e; [% Q( |, A% P! ?% U5 t

8 D* e7 b. O+ u3 D7 Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 |/ ~! q- {* w0 _) h0 E
;;
将此次交易的记录加入到customertrade-record-all: M, I' ?$ X( i8 `3 R
end
: F6 e- g  Z5 ]7 l! Q8 Z, v) K+ d5 L+ w+ b) I) Q" o
to update-local-reputation( s6 O$ ^* L  A/ H  `6 O9 j5 A/ ?6 h
set [trade-record-one-len] of myself length [trade-record-one] of myself/ |& P4 s# Z4 m
* w5 y+ @& M# w6 T
4 |0 L1 o) [) w; O; m4 s8 {) V7 b
;;if [trade-record-one-len] of myself > 3
9 B# a2 J5 C! Z3 C" z. E
update-neighbor-total7 _0 Q1 Z$ Y: Y
;;
更新邻居节点的数目,在此进行
7 z4 H; R0 k* J- e* E! A( a( n6 I, W% }let i 3
6 l1 s1 y; A7 m# Nlet sum-time 0& A$ G+ t$ |2 Z+ n9 k" g/ b
while[i < [trade-record-one-len] of myself]& K8 V% }7 W: T& Q
[
0 p6 C8 K, m( h7 q4 D2 dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 U6 N: t$ v0 {# y0 U3 Rset i
! D+ s  @' i; q. X5 a9 Y; \( i + 1)

2 K+ \$ S, Y+ P4 ?]* @, W& l" N, v$ P: V6 I
let j 3
; d- P4 |$ C" Z  I9 ~4 h% \" `let sum-money 0
0 n9 ]$ |: _$ [, Zwhile[j < [trade-record-one-len] of myself]" t- Q2 y- ]) ^4 z, Q
[6 r8 w* I* b2 _) c+ d
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)
1 _2 r7 S) a$ l9 ?9 nset j
8 t9 f* G9 T+ Y( j + 1)

, Y' X, {3 Y( n9 {* a]
/ H5 T, Q5 v6 q5 \; O% r: Llet k 31 L( X" V' g9 ?! ]; ?0 \
let power 0
5 k5 ]5 u( f% _/ |: ]3 t1 ?! nlet local 09 P# s& Y8 t/ l! L4 c
while [k <[trade-record-one-len] of myself]
# b/ U- S, Q2 p% l, @[
& x7 v$ J  t" C9 o+ J) O& m' D. hset 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) ) M0 l/ M5 K( |: ]/ r9 Q1 z2 [1 P
set k (k + 1)8 q) p" T$ q9 g9 w, u3 ~" S
]
  x- w0 n$ a$ \9 gset [local-reputation] of myself (local)1 h7 q' ~4 i! n: w$ E
end% [% _* Z$ a6 O5 X

! ?& h7 S" ?  T; f+ D) ]to update-neighbor-total
4 x5 E0 W( K1 [  g# d2 \9 j% C( Y2 r+ M1 m4 [0 ?" c) g& Z' p
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 S+ c6 R) z& q2 k. a
( D; c/ T4 d/ |+ x
3 u: }" n: u% |+ }) D- y
end" ~& y7 t0 i8 n9 p  R
" G6 F, P5 e5 m$ s5 d
to update-credibility-ijl ; x  Q% Z. p" Q. g6 v( s) a, L

2 J- W# h0 `9 t4 k8 _;;
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& Z/ F  W6 f) r& Y
let l 00 L# M* V' G  z6 e  G
while[ l < people ]& a5 k$ B/ v/ O
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价$ \1 `  F! y" P; j; H1 x( e6 [$ O5 @+ A
[
6 ?. a4 l4 I. Q: B. o2 Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
' z& l: e2 _. ]/ ~/ w+ F8 Eif (trade-record-one-j-l-len > 3)3 G/ A5 U4 K6 D4 I
[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* L% E* N  r( f" M2 D- M; [
let i 3  x& b% ^5 ]$ W! a3 S3 b4 _
let sum-time 03 y! e& O, q2 L) N2 W/ h
while[i < trade-record-one-len]
7 n5 k4 M. ]' N: C& I$ b9 }! x# {[
% |% o6 P( ^5 L  h6 V, f9 N  [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ G# v; Z4 a, g0 F' E" ~; H( ^  \
set i* b7 q3 q, @. f9 ^* J0 n
( i + 1)
% H8 B8 D& z; _( k% g
]
. S* y6 A, \8 K1 k. l2 E9 Wlet credibility-i-j-l 0: o  x' d( B" y' L% y
;;i
评价(jjl的评价)$ i4 j' w+ X1 d! a9 x) d+ K3 g
let j 3. D$ H+ ^8 f6 v( S0 U
let k 4& J# y% M% Y, \. ^
while[j < trade-record-one-len]
2 v: f& _5 q, b3 l2 l[0 R. ?- s; Y; n' o% c
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
; r% ~3 v8 R/ Hset 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)9 E# O9 H2 n8 y, Y% i
set j
$ d0 k( R% h* F6 {0 _- \* Y( j + 1)
9 ?; {( o  |, T+ h3 y
]0 V8 ]7 K* h5 X* V% T3 ~8 q
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 ))
) a. }; X7 E+ U" i. `, j3 d1 K. G4 S; I2 W1 K8 `

9 p8 b6 I- p+ d4 D0 s& alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  h; Y6 U; a: q6 g' o
;;
及时更新il的评价质量的评价
% O$ U9 i7 r. f1 K* v) Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; T, R$ ~! G& L0 B$ W% e
set l (l + 1)% `8 f( _0 Z" M, `4 ?3 V" a
]
/ u2 E/ a1 q& {$ E& Nend
' P; j5 ?5 D5 O8 k0 R* B8 ^# \- t0 B  P# I* z
to update-credibility-list8 p2 ^' N1 c( \
let i 0
; I4 v1 Z- x0 Nwhile[i < people]
' W7 ], R3 E* H3 _[( p$ c8 N5 y: @+ O8 R/ B
let j 01 j0 z2 }" |/ T0 |+ U. f
let note 0: n% |8 q9 W) F% I; a% ~0 G* l
let k 0
5 m4 O+ o# k1 i. g$ h4 x;;
计作出过评价的邻居节点的数目
8 E6 W. l9 w& l- L9 y  |- Iwhile[j < people]
+ f( A9 r, z( J$ a* ^[+ i$ _7 I! O' e9 z8 b: U6 t: t
if (item j( [credibility] of turtle (i + 1)) != -1)
8 H- t, m; m% W1 k;;
判断是否给本turtle的评价质量做出过评价的节点
4 \% m! P! A- C[set note (note + item j ([credibility]of turtle (i + 1)))/ y6 ^. m- S1 f! X5 D5 V+ \' h
;;*(exp (-(people - 2)))/(people - 2))]
( B/ W+ ?7 |/ T
set k (k + 1)
! f0 q/ d  O2 u]
" j. Y+ ?/ m" bset j (j + 1)2 Y7 `+ C! A5 e5 x" l( M
]0 j) F& M  Z# t8 W5 t$ @3 Y
set note (note *(exp (- (1 / k)))/ k)# n- E+ `% _( U% L7 |' T
set credibility-list (replace-item i credibility-list note)& Z& Y; _. y. n! t0 m5 Y
set i (i + 1)* D2 ~, O$ {& [0 L
]8 l% ]! t  q! [: ^9 ]
end
1 J, W6 D0 o& j& H7 a) y0 `5 O4 E/ R% Y4 `
to update-global-reputation-list$ h$ T0 B3 f+ m: b, U/ _9 m
let j 0
+ X! {. d" _8 {while[j < people]
2 e1 A" L$ U1 x  s! h: E[
1 S" z% r% Q- @& hlet new 01 ^& l: q3 P# B5 |
;;
暂存新的一个全局声誉
7 x; I! c9 B( b  d( v5 W$ blet i 0
) o8 D7 L; X7 G8 m- v! D: Rlet sum-money 0
: f- v* D$ b! v! L9 V4 wlet credibility-money 06 p$ \  S3 F( z' ?! c+ e5 a% w. F
while [i < people]
2 J) M" J4 v8 I6 g' K' D/ }[/ H! U. Z/ F. }! n! ^2 c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% v- a/ G+ r3 g) N3 {( }4 e1 A
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 b1 [) F) |; d) A9 R9 T  A2 iset i (i + 1)# |  ^* L" I$ F' J. z8 H8 j
]) o3 v% Y9 E8 c. e& x/ C
let k 0
  D! O3 w* ~1 [! b& \: c4 Rlet new1 0% Z3 j0 Y2 M' S& _. I, `
while [k < people]. N3 O7 S0 x* F0 v- m7 K: T+ t
[
' [% z9 F2 ]+ {' N3 \% ^# Bset 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)& Z. f- P1 ?: h8 {- m) l- K
set k (k + 1): E3 X7 `1 m7 Z& f4 `- d
]
. y5 X' L, J% U2 @set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) e/ {8 M% q+ \4 v1 `2 C) |& Aset global-reputation-list (replace-item j global-reputation-list new)8 q+ K; P* W: b/ h
set j (j + 1)/ n. k$ n+ P1 d) r- q
]
$ L+ V* ?9 q2 c2 w  mend
+ X! r9 v1 [4 J# \3 V" V9 F0 K6 z) q

! Q. ^2 y$ [0 Z6 T9 ^
# O$ K3 d. U- p4 V$ vto get-color! D+ ]2 |6 m: A, c
1 W8 c1 s9 i# G
set color blue

3 v( Y, r) i& y: ~0 o5 eend- X) b% F0 c% Z' v3 |8 y
) ?4 W* t5 g- u. L( {0 W
to poll-class+ g7 v+ ^2 l0 e' D/ O
end) ?0 t) P$ u! l2 ^0 p$ }) b. K' @

* q5 I  @: I  [& i0 `to setup-plot1% _3 ~2 W: }0 m3 g. R+ J$ R! k

: o5 T6 ~( x9 Oset-current-plot "Trends-of-Local-reputation"

: m# q2 R" Z; `
5 y& b: J4 H/ R6 P. ~set-plot-x-range 0 xmax

! n: Y& F1 P7 J- A7 s' |! }. Y( `+ b9 H% U. R7 M
set-plot-y-range 0.0 ymax
% X3 [6 v% ?2 Q# F
end
& y2 j3 k: w% d# A0 Z
+ z5 E5 N0 g' g8 R7 c' y* Dto setup-plot2! m; Y+ X. f' b

) J+ N) S4 d- d5 Z# K+ m  _9 C  e; rset-current-plot "Trends-of-global-reputation"
, a. W! @, z& _
: X! Y8 }" t" _  D$ C
set-plot-x-range 0 xmax

) Z& c3 i; S( R% i4 }. m+ O4 V5 c  \: N0 `
set-plot-y-range 0.0 ymax

' y/ _3 S) i* \6 Aend0 C+ L+ J/ G$ L5 H( v( c/ {
0 _% Z# h9 K5 h& o* d5 _- w7 {! V0 H
to setup-plot3
: ~7 E" ?0 D- B2 s1 N9 c9 g7 h% o4 i9 R
set-current-plot "Trends-of-credibility"
  x5 q  e  {; N! R% L/ F. d* @
' G' N3 W( M+ w7 c
set-plot-x-range 0 xmax
8 ^( _/ Z9 I* B5 X: Y2 D) ]
' n( {$ H/ U2 ~' D( I, h! ~: D
set-plot-y-range 0.0 ymax
! c/ g3 g2 n" W2 n+ h# \( x8 ]
end  s6 W/ N) r+ R
& v9 f7 w8 m/ V, ?* p
to do-plots
$ ?: s  ~7 H$ [' h% _2 dset-current-plot "Trends-of-Local-reputation"
2 O# m$ N, D  e+ y* b1 lset-current-plot-pen "Honest service"
9 O5 P" N0 }# e7 N- k/ n( Qend0 W$ j9 c( W2 r
! a! e5 `# x' v! w; x$ w# A
[ 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( n0 j7 E  {* A' N- Z% h$ ?% d2 |9 }" g" N/ W
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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