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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:/ m; g9 x$ ~5 l" N# ~
to do-business 0 r/ P5 i' h9 b) g
rt random 360" V# m- \' [7 G& X0 m
fd 1, |# d: p  [# O; O( m
ifelse(other turtles-here != nobody)[
' `, W$ C: L# A2 m( }6 ?. m   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题." l6 |' N" I$ V: g' d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# M# L5 ?4 N9 v# o+ Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* s" ?& h2 i3 l) j9 [+ y! g
   set [trade-record-one-len] of self length [trade-record-one] of self
' [! u; R6 t, w- V   set trade-record-current( list (timer) (random money-upper-limit))
: Q5 d$ U5 t7 A2 s6 \! I; v+ _
/ M- X8 p: ^* V6 r  z1 B2 k问题的提示如下:
. a: H, b% ?3 K6 X7 r1 ]4 s9 }. G) z; |  T' K
error while turtle 50 running OF in procedure DO-BUSINESS( g/ ^8 w3 `4 S1 ]9 N
  called by procedure GO; n- l8 O; U0 b4 H( B5 X4 r* A
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( Q4 R& U& O4 M+ Y" x
(halted running of go)
% e. G1 V' r/ I1 P3 m- j. D7 u4 ?
3 |2 e- T9 J- ]" 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~~( ~' A7 _) G6 c2 `3 F5 ~
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& T/ N) w; I. C/ S4 a! [/ @/ K( d* p
globals[* J, @) n0 a5 H1 B. z& y
xmax! f1 l3 }+ U; N' U0 X1 ]
ymax
0 k' f0 J1 ?* b, J! o- v& G% \global-reputation-list7 V" c) }( s. b. F8 B: {
( I& i5 W" L, [+ K- z, ]/ {( v
;;
每一个turtle的全局声誉都存在此LIST$ Y$ ]: P# N$ p3 a* J
credibility-list
' @* ]: T7 k2 Y  Q;;
每一个turtle的评价可信度
& f$ [9 [4 w& a7 c. K- c7 D6 jhonest-service- X# S2 j4 J- @/ [
unhonest-service
! w' `% `$ J* d3 Ioscillation
8 R: f6 O  }+ c8 F1 Qrand-dynamic
/ S' P2 S( `1 Z$ w9 e]
+ L2 v  b7 u6 O0 t( X) M: H( W/ b5 r: S8 K" z
turtles-own[- m# N9 b: p# _" i% J
trade-record-all+ T5 t& x6 ]9 M/ O# G( i. Z0 Z
;;a list of lists,
trade-record-one组成, @+ g% S# z7 A. g
trade-record-one) Y" ~8 v) m' X  q
;;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 e( z# G" }, V8 V
' X, ~: `4 L5 F# H
;;[
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]]
1 Q7 P) i) J3 p9 c) X* Itrade-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]
1 h" `. m$ G3 D# {" g2 Q: F' a: Lcredibility-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
$ S* i/ U/ I: q# }$ i& jneighbor-total
/ c& P4 h! h8 G; w9 P;;
记录该turtle的邻居节点的数目
$ n2 P: `0 j1 k* Vtrade-time& {! ~# I$ g& _- y3 w- O, j" v
;;
当前发生交易的turtle的交易时间
- y  |) g7 k# [" ]* Jappraise-give% m$ s0 U: {7 o* b  O4 C  e
;;
当前发生交易时给出的评价
& N1 p8 u. l# Cappraise-receive( x% _0 z0 s9 Y
;;
当前发生交易时收到的评价7 d9 Q8 W8 c1 z5 m
appraise-time
0 V( U8 @6 j: Y5 W: U' }$ D! z;;
当前发生交易时的评价时间- Z+ F5 X4 F7 D6 f' n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 K7 {$ p- k/ k6 C9 ]trade-times-total) G+ n! ^4 c9 L. N
;;
与当前turtle的交易总次数" I3 _& d( x% s# O# B# D3 j5 c2 y# l
trade-money-total
* R" O1 }/ L7 B  j. x;;
与当前turtle的交易总金额
2 h. p. Q) m% \; C( Llocal-reputation
1 [5 y" |) \$ C' nglobal-reputation
# H9 u8 I; O9 S' j9 ocredibility# z0 H8 y/ a0 E/ e
;;
评价可信度,每次交易后都需要更新
& k0 k! M2 R5 g4 {% x) |; ~credibility-all# E/ l. U+ z3 x  l& ~
;;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
9 g9 b2 V! v5 c+ m
* ]$ F' W/ [* A/ v2 U2 _;;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' O8 u+ k; d, b
credibility-one9 ~# X' u, w+ B- A- T
;;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
) O/ d  {) I0 l! \0 u( U# Wglobal-proportion
2 v3 _: S" s# w% scustomer
5 d6 Z. k- y' Ccustomer-no4 w: ]( j1 r; g3 `- z
trust-ok
) n) {. w! k* h- W3 {trade-record-one-len;;trade-record-one的长度
& C# l1 X; |5 E( V- \8 S]
$ e) G2 q5 g7 f2 v2 u( ^2 d( x$ ]* C2 s& D6 {
;;setup procedure- w! @6 ]7 x+ R+ a) E3 Q7 E
( E( b) I# P1 B/ p; z# M: D
to setup# V& s% C( n) J! U* ~# L" i6 U
8 v5 ]+ k! @$ I, f
ca
5 w, t, L3 }$ J9 C1 G0 h0 Y( R

, K( ~5 w! ?3 A, q8 a( {initialize-settings

$ H( U" }# I7 A8 p& E9 z, w5 T* ^" ~1 z
crt people [setup-turtles]

6 `+ [7 t' W# N& f$ w# |/ M! C" u' p# ]( ?) [
reset-timer

$ V3 W* C+ a# f! L+ J
2 X* `, {" X. Z* H, f9 Tpoll-class

. \8 h6 [5 ~) W& h4 e+ u
+ ?% t' x. h: B- v! |6 b  Tsetup-plots
6 [* p  |/ E/ J) R

0 A: s3 ^2 V# w3 W( e5 n; _do-plots
0 l% g8 L) v: c1 o6 G+ j3 K
end; G" K7 E! t3 }1 p
8 |8 ], `7 F( r* {$ o( |
to initialize-settings
, ?8 a: o( J; v6 {  o/ V( ^3 S8 |8 O: f- p3 v1 P0 q, B: y$ Y
set global-reputation-list []
) H. _- d3 W1 m/ U
9 N# e9 P8 k* e4 j
set credibility-list n-values people [0.5]

8 d" ^" Z  u+ D3 `+ [% D' C- q8 c9 F! H" Y% R7 d
set honest-service 0

- k/ E, f4 Z8 t; e- x
3 s7 ^- K: n+ k1 _/ ~* }set unhonest-service 0
3 w8 o' H5 V( ~; b* C5 |2 M6 o" X2 A+ |

* \( c0 B6 R2 K, q8 Rset oscillation 0
. b$ t% d5 D% g1 A3 U  `5 l& @1 E+ x
: y/ L8 u0 ~6 A. g& [# P
set rand-dynamic 0

# P* p5 P0 w1 j/ Fend
+ L5 `6 M+ d( s7 }
  G, F; s" W# x# Xto setup-turtles
6 S: \& a! D$ J0 J8 T1 Mset shape "person"3 N) q( b" u3 L: ^( |' a
setxy random-xcor random-ycor
& F" s# a( @7 P& ^3 aset trade-record-one []' L1 r% {+ y( K9 D, s
  x+ j3 f% M: o- u6 |# N( i8 y; S
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 s! }- a$ x( ?6 }1 l* ]2 w! f2 T

& g3 h# f4 V9 a9 o% Eset trade-record-current []# {, E: Q: y- {
set credibility-receive []
5 o3 e3 ~# E- J" {3 r* d+ Pset local-reputation 0.5
3 F8 [2 B/ ~- o) M. {) o2 f6 x" |set neighbor-total 07 g* A8 l6 V* W; @. m
set trade-times-total 0
* o/ j3 V+ v" O) a% Iset trade-money-total 0
. t( w' N3 s. y7 ?0 Wset customer nobody; U! ]+ @: K; \& E* L; ~1 M
set credibility-all n-values people [creat-credibility]
) U$ u0 m* R' d8 g5 ?% dset credibility n-values people [-1]- |4 Y; C6 }5 ~& J% P
get-color3 f. }0 M, \' M: V

! K& {5 A) z( n0 \) }& X8 ]end
, o) j* d* C% y  P" [( B+ y0 C9 x* ?0 n) X/ S, L
to-report creat-credibility: }/ F- G- v; }: `9 a+ k$ X! O
report n-values people [0.5]
& o& Q! j9 [+ |- ]) send
. s: Z" C# ]& e9 N" \# h/ w) _1 a9 M) K5 C
to setup-plots
- G& h5 F/ }/ _' ~- ]& r* Q
$ v' Y& i# Y: F! g- _  _set xmax 30

0 \2 y0 _  |+ E0 }1 l2 Z% Z8 `, h9 q
# w$ w3 z. d( h5 x( Fset ymax 1.0
$ z% E" D" V; D9 |! o" \: {2 ^

1 w+ v! {% R* _; H5 mclear-all-plots

: e0 o* @# Q' Y
, k1 Q2 M9 G. `5 bsetup-plot1

% ^7 t7 m% R* V, N: f$ l- O, X
. E8 v7 h5 r0 O: l5 E. e6 v4 u5 ?setup-plot2
! l  @0 F9 }3 {* w
' j, d6 y* T. S3 b( Z' ]
setup-plot3

1 ], n! J" f7 v- send8 \4 p# x$ h$ `: X; p* n2 T$ _0 ~2 g; i

7 q& I0 O, v$ ]4 G- R- F;;run time procedures
) @. x, T$ C1 ~5 V% @3 W  A
" n; ]$ c3 G$ q+ O  H5 e( Lto go+ F6 \& U8 B1 }' r% Q8 Z3 |
" N$ E/ r) n/ O  F' g0 j
ask turtles [do-business]

' w# o! x7 H' c( U- b5 o1 R( Z$ n* k" Bend$ g- I* s* w% |7 P/ k( \

8 h4 H) o3 K' l, ~. B/ v- o: a( g3 [to do-business
  E& s. G& a6 J6 }

7 ^% ^) B" D" K8 }
! B4 x: F- y; _# ort random 360
0 _5 d3 o. n4 v. S2 ~0 N
, Y+ ?  ^2 j2 I9 c) A
fd 1
# t# w% X- P9 ~4 w4 Q5 H

7 Y5 p  D/ w* s0 V1 iifelse(other turtles-here != nobody)[

# Q8 F0 s8 J4 }2 ]8 Z8 v) `! d, W3 a9 @  i8 w
set customer one-of other turtles-here
; D* T% w9 ~2 u8 X0 c! P
. \  B0 U6 s; @% P+ J
;; set [customer] of customer myself

& e0 |8 E, @" D. D! e* [# y% J9 x* _; v  j
set [trade-record-one] of self item (([who] of customer) - 1)
8 E; C+ [/ ^0 p- S/ m, m[trade-record-all]of self1 R4 o. [! j6 d6 `$ I
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 O$ P! g! u! a* \" H5 c; N
0 o* t" n5 V' X; l- M" E
set [trade-record-one] of customer item (([who] of self) - 1)
" M0 ^4 p8 U$ G" {[trade-record-all]of customer
7 `" f! G  n# V  U$ _# M

5 {, Q6 @7 L& ^6 F, p1 Wset [trade-record-one-len] of self length [trade-record-one] of self
2 z% G5 f1 V; N; ]

! [6 F" A% ]: Bset trade-record-current( list (timer) (random money-upper-limit))
- E! z$ F7 d1 g5 S9 @. a

4 F6 R* X% N/ N2 M: S/ oask self [do-trust]9 A1 C# \" ~! o" @9 [& f
;;
先求ij的信任度  G! [6 G9 ^# F  x2 X8 l( u
, {, D$ p, t/ E
if ([trust-ok] of self)3 }9 D* R2 r" \' y
;;
根据ij的信任度来决定是否与j进行交易[& I+ w: z* l: S, k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! K! q! d) R# ~& A
7 i+ ?8 o1 }/ N# m9 w
[
# ]( I5 A3 n/ X* O) |2 b

5 R1 r$ }! O0 Z! Edo-trade
. T8 [0 J* E0 Y8 L* [; [
; K& ^4 f& I: z; Y: O
update-credibility-ijl

4 W: N  T+ b4 I1 b  G" j
; u8 }, F9 p  q% F: Fupdate-credibility-list& d* m' u' U3 @, S' I; Z: t- A5 s
3 n1 I: L; W" u
& a% t" z! j0 q
update-global-reputation-list

& d) ]4 N1 [' n+ b1 z
4 }. T! g  A3 N) Mpoll-class
& {$ s* v1 d. ~+ ?# G

, c1 {" z* @) o: w/ r* iget-color

; [0 E) N' \, I" d/ _" L9 i  }! O  o+ j
]]6 `) ^# G' ~9 v% a; y* B, }

: C7 X. {) Y2 G( J- \' s; v;;
如果所得的信任度满足条件,则进行交易
8 m' C! X3 Q6 X& m4 t. ^, a% h& k2 l
0 j2 G/ e0 F" W% G" Y1 j2 T3 a9 G% o[
* i/ H) M: A; W
4 |& Y. [9 ^# M8 x0 \) {- E
rt random 360
7 Q/ y9 H7 f: |; k& Z! s) Q% a

8 x, Z8 l; k! S* ^: ^; G: O* A; w# a+ T0 dfd 1

7 b% B2 j4 i& c) `
4 q1 H; i7 j2 |9 g& h8 u8 d]

5 a3 K, I6 B8 s4 U( k) V. C% C" N0 i; d0 e" H4 }6 C/ G
end

4 I$ Q% r" n; ?, U( F9 X
. S+ I: x' h+ _% Hto do-trust 2 H! ]$ s* d  E' G4 h5 I  m! H
set trust-ok False8 M0 {( S" \2 Q" W0 P
9 A9 Z4 H+ v* p- o0 `" n. |

6 T  f2 `6 R1 r6 Clet max-trade-times 0
9 P% J; G1 S: U7 M4 z( w- m* Wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 V" b, J& a  e* @7 o+ d: slet max-trade-money 0
; J; o+ @" C3 C  A4 W! iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- ], Q% K( ?' f& \& Zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# E" l- @% X  o) x* J4 `/ n

* Q. j, }9 h% C
% L# D- D, {2 x1 X4 b" l$ r0 n3 A
get-global-proportion3 `" E1 H& L5 h
let trust-value
! b" y; s6 {$ }. |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)
; ]7 B) l/ i+ Z4 U& n4 x
if(trust-value > trade-trust-value)- B/ ~5 o: Q8 {# l8 P
[set trust-ok true]
' D" s2 x& U- o! {end
) x  h8 [' a5 e# e; I  y/ h
! L' w% S# b" p9 ^' R5 Qto get-global-proportion
2 J( l6 ^2 o# @  difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! S3 I; z8 ]+ Y2 O$ k, I) t
[set global-proportion 0]
4 v' O6 f& b$ j1 V# j8 p[let i 0
2 e8 K" ~6 c! I- H5 ]let sum-money 0! d; c3 J' R( \8 C, M# e
while[ i < people]- c. c- g4 Q+ x# I# `  @6 ]1 Z/ P
[& y) X4 p4 C7 `9 [) T* P' I
if( length (item i7 Y& }6 H  J2 z$ B( r3 e$ O
[trade-record-all] of customer) > 3 )

( f; Q7 `# w/ k9 R2 m/ }' v8 A[7 e: r) Y8 w' ?& M5 S
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 O+ {- _% C: j4 H; |' l' P9 o
]3 W" m8 k. W: \- A7 T
]" K' ^7 c1 v2 ?- F9 P% [$ d/ Y
let j 0
6 ^7 }! K9 @4 ]% m8 zlet note 0& d  F' i+ K9 B* [0 q
while[ j < people]
$ h6 p, q0 I6 w" S+ }[0 H4 G, i& o# h# Y! k
if( length (item i) x8 ^; s  Z% y3 B5 f
[trade-record-all] of customer) > 3 )

- |& w  n3 U) s' M& A$ ?2 L4 H[
: S7 U7 S5 R. X# |6 \ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 B9 N+ U$ U5 c  [: j* ]: o0 b/ w" P
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. u3 S0 M8 L. C( R2 Y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ p; ~$ F7 c0 ^) T) s  t( a! G]/ ~: e6 h- _7 T9 U/ k, U- R
]
& v; p$ L& X0 {8 O% |  z1 `# gset global-proportion note( _& {' V; l- l6 u1 R4 O* T" s
]
; W1 d! g+ i7 n! I- C  Aend: p: g5 M( M! G; E- h( E/ k

) ~$ L+ k( P# \9 [to do-trade! _" a% }6 H2 Q/ [1 Q
;;
这个过程实际上是给双方作出评价的过程' Z' v3 ^4 h2 T  V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 ]! k; r3 x- O$ x2 A6 w; k7 |2 Y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ C. {& P- x% l1 J1 Z/ U) }
set trade-record-current lput(timer) trade-record-current
6 S2 l0 `9 T! t3 A" `;;
评价时间
+ n: G) T; o5 I3 M* ~+ h2 Cask myself [" G: {  g5 c  B! }& q" W# h
update-local-reputation$ h9 G" z6 T% h% t' y
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 X5 V& R4 Y* H: |5 e$ j3 z' i7 t]
: [# l4 `- B7 [set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ |3 Y; R, a: {3 `3 p& K
;;
将此次交易的记录加入到trade-record-one* H/ A8 A/ M9 w* y2 U) W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ ^: l9 t9 b, J, f7 N
let note (item 2 trade-record-current ). U7 O7 K" O. }
set trade-record-current
* J2 U* w) I0 y(replace-item 2 trade-record-current (item 3 trade-record-current))
9 E9 {$ n# z& N& w
set trade-record-current
; }( D1 Q" o! U9 s9 t(replace-item 3 trade-record-current note)
0 M2 ~/ e& s* h9 B7 f) k' i% |8 o

  i* V5 ^, f9 k+ S$ x" z, v( a) vask customer [" r. r: ]# r0 ]. {0 S
update-local-reputation8 I6 t2 s* A7 B6 y/ E4 T
set trade-record-current
% W0 g: r6 `: g. }$ g9 A(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 w" K1 m0 \. A: F]
: s. z. j7 K) I0 L* J8 p
9 t; O+ u' H; j5 O6 u4 g

3 B2 h- @$ u! hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: e* Z* ~6 n. {8 r, e5 D8 s
' C2 T& d$ Y7 X& O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, m. d& \: |4 o  F" W2 W9 ^;;
将此次交易的记录加入到customertrade-record-all
% D, P- ^. }( y) n7 x+ Dend* a3 g/ l8 P/ `& ]: X8 i
7 W5 |/ w3 C8 h
to update-local-reputation: G) r6 N( g' L1 x2 h5 O+ H
set [trade-record-one-len] of myself length [trade-record-one] of myself
' A2 }  P0 i6 N9 F' n5 V! ^, R
6 Q9 x  r6 S7 p! @8 |9 L8 Z
;;if [trade-record-one-len] of myself > 3
3 _% E& |. F5 [6 ~9 M- J* e
update-neighbor-total
3 d' ]8 I4 p2 O& @* B;;
更新邻居节点的数目,在此进行- b0 k: N" }9 C
let i 3
* l+ G0 t' j* [+ a3 Ylet sum-time 0
7 ?# C2 t# F! y; [; Z1 r$ cwhile[i < [trade-record-one-len] of myself]+ l* [1 ~8 w1 L+ p; Z1 g% G6 I0 R1 e
[9 a9 }+ W' Z) ?, _: T# M/ T8 T5 Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* p) Y  y$ z' P5 d2 t, Jset i/ c+ C, ?' l* N6 v9 I
( i + 1)
; M& [: D6 h! I+ B, e: w8 {
]% `$ \, a0 \, O1 K: U' _1 O
let j 37 ]- A/ t' O/ g5 Q- e0 M! Q
let sum-money 0- `' X! z! F( `
while[j < [trade-record-one-len] of myself]# |" c: D0 q* W$ ]/ v
[
& t2 K8 e! A) F) V% |6 _- C3 ?4 Sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# k+ X# t4 \# Iset j
7 p; K! \9 X8 b- V& K" Z( j + 1)

# c  b3 c" m/ h; t0 u]
* m& U* ~3 U5 N. Z' H2 c: zlet k 3" F/ I- {- q4 `& Q1 ?
let power 0) U5 u6 w- [$ T% R: S
let local 0
0 d4 @8 x9 b4 h; Y  I+ l! j4 a! K! qwhile [k <[trade-record-one-len] of myself]# B  _% o4 E) \
[( d% S# v& N' [( H: d
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) 7 M9 K3 p8 l- M- Q/ S# B
set k (k + 1)
  j0 ~/ m- p9 a0 Q+ H# f]
5 ~* z2 v. n% ~  d2 w# }. oset [local-reputation] of myself (local)
* k" Y+ K! e" b. V3 ]- O1 x% @end- L2 D! T, ?$ k+ V
+ d. O; _& m% `
to update-neighbor-total
$ x4 V9 v+ l" c2 h/ i1 e9 w; w' V5 d  z; k& J; ]  n
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. @+ ^# M6 p: u6 V3 b: N$ d8 W( T& M0 Z
" J+ S* |- C3 p# L  V& j9 U% K
end
; K. T! E$ _8 }. K. H
% _0 ^" Q! _$ k9 F5 J2 Nto update-credibility-ijl
* ~# q' F7 F0 I2 R6 H' {  j0 ?$ l" [% Z3 |9 s
;;
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。' Z% h( S6 o1 G; @6 }* ^# R
let l 0
' l6 G5 K4 n& g( }" B" iwhile[ l < people ]( f* V+ k& K' G* M
;;
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3 V, [" |$ y9 c5 g
[4 u+ L  f/ K' e5 l/ X$ L* `5 L1 F* y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" \4 C6 w% y. }9 f; b4 Zif (trade-record-one-j-l-len > 3), k/ R: a; `. X" n2 ?
[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
' X- V' K- f  H$ Rlet i 3! B% U3 [: T# H* N* P* J0 t
let sum-time 05 Q+ o0 B; a. t! f/ n( ]
while[i < trade-record-one-len]6 E& g3 I( J; r8 F) q
[0 e; D& K% _' c& F5 ^1 f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# R& }: L& H& W$ F/ [
set i) ~" \" b2 {% R2 I0 o6 J
( i + 1)
  F6 c- z& K- O4 U9 t1 y' {
], h* m) [: I$ ?- {3 V) o* f
let credibility-i-j-l 0
( F# n& t; X+ v, g;;i
评价(jjl的评价)
; m6 c3 f: R/ m" d1 J- qlet j 3% o. R/ v4 n* }5 X9 ^- T) C
let k 4
3 j# p3 h5 w$ dwhile[j < trade-record-one-len]: S7 U6 f1 D5 x- U8 b
[
* m3 Z/ h& n/ o4 J9 T9 wwhile [((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
) s0 a4 A- k( V5 @4 pset 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 p" Z" q' }  m3 w, o. W# j$ m& ~' xset j
- l0 F+ b7 q; u' S0 d% Y& K7 \( j + 1)
2 H6 v8 E9 d# P3 |) F# L
]1 Q2 J( N% p% s) o; 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 ))
; A4 r( q, W3 M3 Q) V, P* K4 a- a) N8 }( U; r

* T( Q8 M6 |- W9 K2 V9 [5 Clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( D; O, N( [/ b3 [( N;;
及时更新il的评价质量的评价8 j7 Z) K+ ]) J9 W4 d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ }6 @  |6 S( `! ?$ \+ V( P
set l (l + 1)! m3 @$ E* ~1 X# ~& t2 ~
]
& h3 C8 d( E  D2 T- ?( H2 q9 _end
5 w) J8 c6 r1 W# [% O
' z6 y* H3 t* T1 V+ [to update-credibility-list
( Q0 n' ~) A/ v2 `6 Q2 ?let i 01 c7 f% u" \: X* O/ H
while[i < people]
8 s! Z" V+ |' _; q* G( a/ l8 \[
9 C  r0 j2 y* |$ ulet j 0' @$ ~1 ~/ l; b7 C' B' t. R6 R2 f
let note 0% |; g* E3 ?* |
let k 05 K0 N' t8 `* f' r6 Y6 J
;;
计作出过评价的邻居节点的数目
) D: @% x+ \" \: M! p) D5 E. @while[j < people]* O2 P- W  Y- d3 [) _- s  s; w+ _4 f
[( t4 N" n4 P4 u/ m0 }
if (item j( [credibility] of turtle (i + 1)) != -1)
5 g* w* N' P* p' O;;
判断是否给本turtle的评价质量做出过评价的节点! B. N. x  P: y
[set note (note + item j ([credibility]of turtle (i + 1)))
$ S& U+ t. _6 Z* S' o1 l# R! k;;*(exp (-(people - 2)))/(people - 2))]

+ _6 P) |5 b. f, G/ e1 e8 u# kset k (k + 1). U; r8 a5 h, ]) u; q" C
]  ~" e7 A" h6 g4 I' u
set j (j + 1)4 \. q& z  z& B/ `+ I
]
4 d7 Q0 E, i. r( Fset note (note *(exp (- (1 / k)))/ k)
+ K8 }# L: c5 c3 q# j* _: Jset credibility-list (replace-item i credibility-list note). J% i  I) W3 E# n) Z% H  c# K
set i (i + 1)
5 c# {9 ]- |4 U8 M- A8 z- Q, N]
$ d8 C) G* J# y; f6 Uend
  v- L! v6 [5 u- Q. x" z$ g6 b5 O2 A* c$ o, H0 H1 `4 u+ F. ?
to update-global-reputation-list
# b" Q: [1 ?1 D' Llet j 0
5 ^& h7 _! Q6 N* W$ Nwhile[j < people]/ L% e9 D  A+ I% ~- }+ o
[
6 R3 X2 O% U& Y/ E, `* M2 ylet new 0
- ^4 m* @- h' n) q;;
暂存新的一个全局声誉# f  Y$ w$ a6 g* T' ^
let i 0
4 p+ C6 o/ W8 c/ P3 J+ P: Tlet sum-money 04 A; J# O) z) X& y2 G( a
let credibility-money 0
/ C- \% w. V+ o: o+ D; ^# ~while [i < people]
0 b8 N) e/ W! o# C8 S) A$ m; U2 _[5 D  V9 h0 i0 o$ _9 E, n- @
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  N3 q& e2 o: D% l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* G5 q* R* J( ~* p! @set i (i + 1)
2 V( `/ V$ j5 t4 E4 e0 \! b]
  f7 L3 _: ^5 r4 w: D2 C" Rlet k 0
. _3 i4 g3 S  _4 u( ~let new1 0
$ O6 v- `) T! u& Z6 Wwhile [k < people]
5 c+ A9 ^8 q3 z& n6 Q% b[
9 C: G, k+ ~1 r" ]- iset 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)' I" a! R) a0 m* ]9 @. W. Q
set k (k + 1)7 R9 K- H( e; ~5 T
]0 ]6 A/ Y) z2 o, _! l+ Z4 H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 A* r$ T3 x: D( L3 m# h
set global-reputation-list (replace-item j global-reputation-list new)* @4 u4 z; T# Z, g
set j (j + 1)
$ k& Z0 E. C3 p- R+ M% q, c+ h7 Y]. V3 h7 n. S" @7 }: {, k4 Y
end
* K3 I4 b$ U" a! O* j2 X" Q' e
* K8 ~3 a3 Z* U6 g9 i, p% A1 C
9 i" B  J- H* B; _$ F5 ?" l3 \- ~8 k: D
to get-color! k3 t1 c2 m6 m8 U! P0 K7 {1 L

( l' q* a0 L/ m1 qset color blue

8 }: r& q  S; H3 lend* Q6 I' W8 }; ~0 |# C

# f0 h$ A" ?! F& E. pto poll-class( M( H* H' C! |! L8 B' I# N. m
end
; n7 A; O/ J2 B  i6 [# {) H4 C! {/ x. E/ x% A2 S4 _" A7 t
to setup-plot1
6 V; M/ b1 ]  u9 {' R* X
  p8 \8 }& E) _% r, o" Iset-current-plot "Trends-of-Local-reputation"
2 w; }; u; m5 A/ D* N) b

9 d7 G! `% O* D) N+ f; A. `2 y2 vset-plot-x-range 0 xmax

6 O; k7 |6 h/ M) t+ P
$ v6 N' `, M4 F) yset-plot-y-range 0.0 ymax
& j7 t! \* K( ^9 D7 w
end
9 V2 O! O8 q* ~3 ^0 H5 p
; r0 K2 ]4 m1 s+ H  u1 [$ Xto setup-plot2! o+ H. B; j/ \  X! M
4 g* a  Z& d% r. l" T# k
set-current-plot "Trends-of-global-reputation"

1 d( ~7 U! s) j. ^) X3 ~7 o
1 W7 m' E/ U- I# Bset-plot-x-range 0 xmax
1 c$ l! Q+ @/ `# y3 v
% q6 b, l$ W& i  z
set-plot-y-range 0.0 ymax

% S4 M$ N) a' V# s9 l% B# hend
6 X% k! u  O) a  J; K5 o
) I( j0 a+ E9 D5 ]5 `3 Dto setup-plot3
: V1 T# W" c" J& J9 ?  c" i; G& c8 C% X
set-current-plot "Trends-of-credibility"
2 h, Y! ?* x# R8 j1 {
1 o6 a: E$ }0 _, z/ M
set-plot-x-range 0 xmax
' N- L2 r  H) h/ K- K' x
) |( w8 T5 j4 w, S$ `5 {7 ?3 i
set-plot-y-range 0.0 ymax

; S' h$ _4 ?/ Y1 p2 j7 l/ ]end
" e! L- Y( h! w4 v" q5 c( b; G7 t, O" k% ]* Q& x4 ^0 S2 z$ M
to do-plots8 G* [7 O/ U6 R
set-current-plot "Trends-of-Local-reputation"
/ w( T* n% A( W$ e$ y5 Wset-current-plot-pen "Honest service"
+ C3 S) |6 x! X) qend1 M& B9 t1 f4 u, ?

- [/ \5 _3 l6 ^- l0 Q8 d[ 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.4 ~- c; J% p9 `  G& z

6 T. d3 @$ t6 }# J/ C2 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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