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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 G: O  ]) z. r7 c! d
to do-business
7 l7 F# y, e/ w2 X) y& o1 V rt random 3606 P7 d. x0 G0 j! g0 q, m
fd 1
/ z  p0 c. {8 F6 F/ Z/ n ifelse(other turtles-here != nobody)[0 y. ?7 N( j* Z
   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.
; T, m7 f( Q. E% e! g  ^6 {7 |' x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 I9 N: i4 J/ f. B- ~
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; J  u$ I( e1 u( _3 J# u   set [trade-record-one-len] of self length [trade-record-one] of self* y/ Y( y6 |+ ?5 j& [. l
   set trade-record-current( list (timer) (random money-upper-limit))
# O$ F" ^, j3 t  `$ w8 R$ |) n& {% R: G( g
问题的提示如下:
( h, O5 _% L$ \% v5 n6 \* y
  F6 r( f8 ?* ^& V1 F9 jerror while turtle 50 running OF in procedure DO-BUSINESS
5 H5 X7 I0 v# z, d: v/ i7 {8 l  called by procedure GO) X1 E1 E6 J4 K+ m" O; Q& S' U
OF expected input to be a turtle agentset or turtle but got NOBODY instead.% y, E# C! K" _) U
(halted running of go)% P8 a6 M& D& @* n, F, @
" e$ g/ u6 m+ b/ M6 N% R. Y7 L
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~~+ A6 `; R) S# P
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6 {7 j, }0 a# H. {. m
globals[
. y. |7 Q9 W$ j8 n" ]xmax& n2 J6 X0 A2 I: M( l
ymax
6 n$ ~: U/ G  T' M/ bglobal-reputation-list# T/ O; g& D  e
4 a0 x8 t; m+ I8 @$ U: w) o
;;
每一个turtle的全局声誉都存在此LIST
/ |$ ^- \" S3 i8 x- ^" bcredibility-list. M) f- Q" f' g8 I' X6 p1 j
;;
每一个turtle的评价可信度7 Y) p+ o6 R% T& o
honest-service  N% u. {& H1 S# p- \0 m) o9 Z- ^
unhonest-service4 T' w& G$ y1 D
oscillation
+ r8 Y9 ^5 L! J" crand-dynamic1 F( a+ E3 L, F: ~
]
& _. q/ w8 [1 n* O4 ~- p* a& t+ l3 l/ u
' c: N4 \  }; Y& r0 b. }5 a3 tturtles-own[
: b7 r" G* E% F* c6 G& rtrade-record-all2 E, ], q# f# {0 W' F7 O
;;a list of lists,
trade-record-one组成. G# x' y/ c5 N& |7 w6 D8 d9 b
trade-record-one
* k# H9 B  Y/ M4 t8 K;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& f& r% a% d/ V/ {4 ?7 c
4 P$ H, O! l  ]* i2 n& g, r;;[
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& a5 W) |) l8 J6 A: f
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]5 _6 K/ V. [% H" z7 A% R1 P! T
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% a6 [+ ^0 N7 A6 l* V
neighbor-total
6 S7 I9 O2 S: p;;
记录该turtle的邻居节点的数目
$ s* ^" g# L: u3 s3 htrade-time
) X7 d8 j; }3 X/ v;;
当前发生交易的turtle的交易时间
  i$ y0 i6 |) ^. O% k$ ?3 Zappraise-give
$ E% y% A' l& U" J;;
当前发生交易时给出的评价
) |: X4 v% w& U- J  Q' Pappraise-receive
7 B2 |" y1 D3 S+ c2 L  ?; `1 k;;
当前发生交易时收到的评价3 g# i# X8 d' |3 u& s
appraise-time* t, }! Y0 y, D
;;
当前发生交易时的评价时间8 }7 J8 b$ W) |7 N
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& G7 Z# f( S4 z" }  q
trade-times-total! Y! t# w  y8 O$ b: L! q9 X
;;
与当前turtle的交易总次数
% k( I9 g2 q$ M: L9 ztrade-money-total
) A: @( Q" g2 D7 u;;
与当前turtle的交易总金额$ K+ V' _0 u8 d1 \# c  Z. m
local-reputation$ |: s0 ], a/ a9 ]% [( G
global-reputation3 u. _: ?) Q# r3 j3 O
credibility" o+ I+ Z$ W- h% @) C+ t, e
;;
评价可信度,每次交易后都需要更新
% Z8 q4 s* j1 P$ V1 M. d% G( Ecredibility-all; a+ @& ?/ u' f/ h5 B6 F$ d% t
;;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
( W) [# ]+ }' d$ J7 w/ O# x, `: I4 g) F; p
;;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0.54 L0 s) d* e0 V
credibility-one
+ ]0 Q& v9 ]& [" `5 S; p- {;;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$ I9 k6 d' l. X# i* D% d" S
global-proportion
0 C% E- @) L. B! k# D" Gcustomer
& T: g' T+ s; F2 |. \3 x  \( ]customer-no" h* v& g" @% V. v. q
trust-ok
" J' O1 G; _9 Z* i# a. Qtrade-record-one-len;;trade-record-one的长度8 p& }$ j6 X; C( ]' q! V8 _( b
]
  ~$ f% O' i8 P3 G' k6 F7 r  i- E0 `8 Q* o0 Q8 }
;;setup procedure9 r( z) }4 Y  q8 J' A: k

" W* @" h1 W3 x5 N5 n. eto setup
5 Z. z' c/ @8 F/ C) k; a1 E
3 ]! S# E: E! ]: S- U: |6 L( r7 bca

" l( Z- D+ w  S7 u# }, Z+ j
9 h& l8 g: y1 H, o) ?initialize-settings

6 L# M$ r0 {- W4 n4 \  `  X5 c9 z) w
( B( s4 N2 P: l& [0 y4 @crt people [setup-turtles]
. v- |* V7 g. d$ X. n0 m
* }$ R: K+ w/ B8 `( {( i, W% F
reset-timer

3 L  R* a. ~$ D9 q6 e+ x! d4 B, }/ q, m1 a3 S7 z: G
poll-class

. F/ k5 C( e: ^* ]
  R( T! s; L$ K; Csetup-plots

" |( m0 [' p& i$ y% A
- W& v/ G) J/ R6 L" pdo-plots
& h/ w2 H* l; W' [
end/ H0 {. L; ]+ A3 B! t
* t3 T* h/ b% e5 y0 a
to initialize-settings: r! I" e- r9 w

& h& k- P# v2 h- kset global-reputation-list []

6 ^% F$ ^9 j$ f; X5 r* B. B* n' J  b% o& i: |2 F. K) n1 t$ c
set credibility-list n-values people [0.5]

/ Y7 ^2 L* p. `" ~  [9 u9 N& Q0 u4 R1 {
set honest-service 0

$ z! @" M* A4 j9 p% D( W1 Y
" C1 h- P2 V6 r; B2 Mset unhonest-service 0
+ E0 O0 m; F' N- X8 E% Q$ `
, v0 H2 \4 R; ]6 e! ^
set oscillation 0

2 w2 p* R9 t& t2 |9 Y" J
- ]- Q! v* C9 A2 x8 jset rand-dynamic 0

* }3 ]( x( ]" `) M: |/ H8 x. Kend# s0 B9 v8 r/ H

& |& f4 d+ M# a: b6 M% g/ eto setup-turtles
0 {1 d8 x' F* U- f5 o" C- @set shape "person", `' n+ x" e3 O) M% M7 V
setxy random-xcor random-ycor
6 u9 N- ^* J. |! W" j$ |/ tset trade-record-one [], ~. n  k# g$ n- [0 ]

9 c8 _* X) `$ w. t, M& {( Gset trade-record-all n-values people [(list (? + 1) 0 0)]
( z+ V% c2 X1 `5 N$ _5 \; T& `
' a, [! z! U+ r0 Z4 o
set trade-record-current []
* D+ l6 t% l! w: @9 n  \3 O- hset credibility-receive []6 o" W& h. D7 k; x: s
set local-reputation 0.5
; M0 Z- X+ U! E$ X$ |4 Qset neighbor-total 0
- L, Z5 s& M" n5 g4 X% w* Iset trade-times-total 06 w# }; ?$ G6 Y. q5 C! m" P
set trade-money-total 0  _8 n/ t& y* b( _" K4 b
set customer nobody- n7 a$ V3 g% I( `: }- N6 q! f
set credibility-all n-values people [creat-credibility]  Y2 c. L  ]* p# c
set credibility n-values people [-1]
9 l6 H* p5 t3 hget-color3 u& Y! l' q) \% ?

/ w, e4 `+ H* H3 Uend8 p& i1 g: P3 W. |' L' z
6 @9 N, d0 w" E3 _
to-report creat-credibility
2 r( H2 n+ F( l/ g  H3 Vreport n-values people [0.5]. E  P7 N1 p6 @0 s: O
end
7 ]$ \0 |% M- L6 e3 \1 E- c$ N: i4 q: I# [: _4 p
to setup-plots: n8 |- M0 j1 R  M7 D: D( k1 n
* I+ |% T( `5 B! X- ]1 O7 ~5 L+ z
set xmax 30

1 j& t, U/ G7 J4 B
) ?  @: s; L+ G  Qset ymax 1.0

, M3 M5 g* }" c5 k
- b' ~$ o5 a! p0 j( Nclear-all-plots
4 u( t  y, A0 \
1 I/ Q& e. j2 U+ d" K, F; h
setup-plot1
- s+ h+ {5 [4 z

+ @. J) f4 ?2 R$ o  w0 Z( {, T% T7 w2 tsetup-plot2

+ ?4 T8 C* I- R, C, H9 G  g$ c7 j( h
; P* e% Y1 a" A0 ]7 y) Y% p, m$ nsetup-plot3

7 z0 b: N! Q* i' jend
8 D/ R4 e3 Y: q8 i' S( f& F
3 K9 ^0 `$ {* g8 x;;run time procedures; R: h  f/ u9 |3 J- @# `) S
/ a: K2 z+ v6 D% H5 E4 K1 R' b
to go) z& O  b* G9 j4 I/ P* D0 ~

" W1 i8 s4 D" bask turtles [do-business]

/ A7 _) H, ?2 ~/ C+ Vend: V2 v6 P% m3 R% k& e1 E6 k

6 X: v; N. G+ m+ I) X+ Z0 [/ ^4 j2 Bto do-business
5 Q1 [; H7 P+ q' p' r' r
& J3 {  V- k9 C+ e2 S+ d
$ u2 j5 T% C# q7 m+ f
rt random 360
( v0 U7 E5 \# {. R4 t; U' H
, W, p0 r# C# S8 c! m
fd 1
7 T( N( o: `7 t. l6 y! n: T  R

8 o! F2 N* V* {  s6 Mifelse(other turtles-here != nobody)[

. i: C8 Y; `3 I; L; A; [3 {: C% n( ?2 [  S) n
set customer one-of other turtles-here

& S6 }3 p" e: r" Q- k7 F- u/ d0 u( G& a6 R' Y! S  H
;; set [customer] of customer myself

4 P: k, T5 `) c$ g; u4 ]; ~( N" n1 N. G0 n( [- X  R
set [trade-record-one] of self item (([who] of customer) - 1)5 E. c# R" y7 S1 H; ?& ]8 G9 a4 \  n
[trade-record-all]of self1 ^" B- Y- e; X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' R1 P- J: ]+ V' L$ E

' {0 g: D  Y) w0 Xset [trade-record-one] of customer item (([who] of self) - 1)
5 G% @+ ]4 h2 W# |; U, f[trade-record-all]of customer
( z/ W( Q5 Q2 }: t3 H( u' f
3 Q+ ?% N) ?* @& T
set [trade-record-one-len] of self length [trade-record-one] of self

, A+ [% P. ^' N0 k$ X8 e8 i
- r7 g/ @7 \$ D* Dset trade-record-current( list (timer) (random money-upper-limit))

+ U7 U7 J3 [; {) L, D
$ |$ q" D2 X/ t5 j+ ~ask self [do-trust]% Z5 \) D% I0 \5 D- K& k" n8 D
;;
先求ij的信任度
5 G! k7 G8 k7 t% J6 m" t3 a8 R) Q' g% G1 M! n; d
if ([trust-ok] of self)! M" ?3 I! g5 t( c& B* y, }
;;
根据ij的信任度来决定是否与j进行交易[* s  f3 _. u( H7 [: W
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: p, o* Y! ]; V5 i' ]/ M% H9 G& j8 ]& {* l
[
" X3 V' R- r5 ^) h9 [$ r

' E( B0 {4 j0 V* Pdo-trade
7 ]) n5 _  u6 W  A: [+ W) f7 {2 e

, _7 O5 Q7 ~  ]3 i/ p* }: dupdate-credibility-ijl
$ _2 {9 b% ^) F
7 P- _0 e/ d3 `3 a' L- z. @1 }$ T' H
update-credibility-list
: t/ m6 O# y0 O- g% J1 h! V

2 b; u" b5 }  N, ~0 a1 }2 j: [+ o- b+ L1 j0 `4 ~6 j+ O* E
update-global-reputation-list
) @3 i' c+ |$ Y$ }8 V* C0 B" w4 s

/ r- k" w3 j1 t& ~) ?poll-class
- L' r4 u; v  _  Y
8 X" V( z) l0 Q! f% f. I0 J7 i
get-color
% \2 R0 R% {5 G+ v! a

; S: _8 B' `5 I! i. A8 E]]0 q' C% D" i" g4 \- x
$ Z; g3 P4 L  W1 G% j8 @
;;
如果所得的信任度满足条件,则进行交易; n% \1 A$ y0 Q% S

% S. P' k8 S' c( Q2 f! c4 \/ p[
9 F! r" w/ _) e. d: x- m- \
" ~/ D3 G! [4 c$ Z8 D1 |/ B
rt random 360

! s0 e# t$ M6 F; S# h' j0 J8 S# X) ]. b
fd 1

% B) W" t9 S7 ?. G* \8 y1 K" K4 d2 }/ G% }
]

' n% h  l( j7 N/ Z4 N2 S' v# g
end

7 Z2 F% ?$ U$ \0 n- a
% V6 P) d6 i, J& V( {) fto do-trust
) ?8 e4 ?$ T- e3 W* N! k; ~2 mset trust-ok False7 R: s1 }$ c( X, @" z
- g9 a' t& i% p- w* a

- Z. C) [% O4 A' `1 A! Q1 nlet max-trade-times 0$ X% @$ {8 ~+ M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) q5 B, F8 l8 ?" hlet max-trade-money 0
% Q6 a% r! U* r1 Hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 n! ?) I( N# W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 n8 Q& o- f, H, V  ]
, A5 c; T; a- H! X8 b, R
- ~/ O% W9 z# X. D% W
get-global-proportion/ e  ]1 k& L- r& A/ [% r) s$ ]- O( ~
let trust-value& F( N9 g  I' @! ?5 y1 O
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)
( t8 C+ |: u1 {# p4 N
if(trust-value > trade-trust-value)
/ D" u2 [0 e3 L( n6 I6 a[set trust-ok true]
% V: s" z8 X2 d3 F. @  \end0 k% F9 s+ y* l- K0 f' O, h
) o" T+ q' Y  U+ r; D* B
to get-global-proportion
' L& ~9 o1 l, \1 r, vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 C. W- D  E2 O/ _
[set global-proportion 0]* g7 W3 V! H/ r' n8 k4 n8 a
[let i 0& s0 t& ~& `. Y' G) I% z$ _! w
let sum-money 0
0 d) c1 U* j2 k. q) Z2 @while[ i < people]/ J$ D2 d6 }: h. T. Z+ N7 v
[& w8 K7 w) ?0 K
if( length (item i2 W# J% I3 {$ J; @' W
[trade-record-all] of customer) > 3 )

2 {, d# R4 i: y3 {. P* p[
! c6 Q+ K4 K8 t6 f9 u7 r) }set sum-money (sum-money + item 2(item i [trade-record-all] of myself)): I' \- c4 t% Q/ X) L) F: A( y% x8 j
]$ }! j& L/ F5 M0 o+ H) l; ^
]
7 q8 O% T: Z6 |0 \) R8 l. ^1 alet j 08 G. }7 m" j8 C& _. X
let note 05 J- S5 ~; ]  l$ U: S6 m/ ~
while[ j < people]" X& ~  B. U- n5 _& A: g+ M
[
- r5 W2 c. p+ v& K5 P& y/ h8 lif( length (item i
( {! Q& h/ O; |* t0 ]# R+ r[trade-record-all] of customer) > 3 )

& M) w; t+ [" X' C1 W[
. N3 t! Y8 G$ C4 n2 n2 M; _8 fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 w) M  `- W; W9 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)]
) j: ^5 A( E/ s2 v5 d/ |8 z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 o. a5 k0 c' o: r/ o
]7 }  ]- ?% L- f0 \& j) B7 S
]
; J7 m  p3 b: Oset global-proportion note
9 ^, w; g: o' X( S3 Y]
; d( y5 S4 l7 }end& \* S. q( t6 z" V: W* q! G& W
! \! I6 K0 m8 _/ S$ s1 [
to do-trade
3 F& {2 Y/ e% @& r2 t( Z: d;;
这个过程实际上是给双方作出评价的过程
+ @7 @2 x7 x5 g1 K: [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ W5 E* z  N' S9 V( r0 B$ T1 Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( I6 Z# x7 n" w  P" Uset trade-record-current lput(timer) trade-record-current
- t4 b1 s1 t9 F; d7 n/ Z;;
评价时间
. K! N$ ]" p7 o& ^4 A9 a5 aask myself [) c6 K! ?0 o& M" n. o6 Z* F' h
update-local-reputation
/ X% x4 U( C( M, N" ~set trade-record-current lput([local-reputation] of myself) trade-record-current
5 g& e+ h* f8 B# n]% D: c; w7 v- s% {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 [& V4 Y7 `3 L' G4 Q
;;
将此次交易的记录加入到trade-record-one
! F# n) T6 d4 t, Z, C8 U9 dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# r2 Z; O: b2 J$ Y& }( B
let note (item 2 trade-record-current )7 ~, ^% A& e( o1 ~& G2 Y
set trade-record-current
$ E7 g) _; O( m+ R; g9 Z(replace-item 2 trade-record-current (item 3 trade-record-current))

9 c/ H3 P) q9 H- D4 @% q9 I8 mset trade-record-current
4 h2 V. C& C; Y+ q(replace-item 3 trade-record-current note)% T- P( P$ Z* q& Z' S( U4 P

: T! P6 v8 y7 N1 s) b

' A0 P8 B* K) C; Y9 n, u1 jask customer [
! f8 E/ X. O& l; _1 ]/ [4 S9 \update-local-reputation0 e$ I# t" x! G3 g. v6 S
set trade-record-current9 D; S$ X+ i+ U) f1 T
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( R+ K; d) h: N7 S& ~6 l]
8 L( B7 g) ]8 q: i$ @
; |' w& Y" V, p4 v/ ]

1 @6 K9 Y3 r, Cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; ~: Y: u4 y+ B% I3 K
- Q( ]  e* p% }7 I3 B* V
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- C; N4 ~9 K& B;;
将此次交易的记录加入到customertrade-record-all, q2 x( L% u1 v8 w6 ^
end6 j7 [6 g. \4 k3 l

0 n: {; |" A& q& B7 t% F% L* zto update-local-reputation
& q& T5 m* i( R# lset [trade-record-one-len] of myself length [trade-record-one] of myself# W: ~8 K- \- f
$ V% Y0 f8 s9 x) F% I; P7 s* p2 o

( L; T. S1 h6 s;;if [trade-record-one-len] of myself > 3

0 N0 N/ c6 R" U+ Lupdate-neighbor-total  Y* v% G9 c% @2 [6 v% G
;;
更新邻居节点的数目,在此进行- N2 R. r0 X& Y. q
let i 3* U/ j& p7 r& d4 R5 b7 x
let sum-time 05 q1 Q& g4 [$ O& x
while[i < [trade-record-one-len] of myself]0 S7 W4 `: a9 q! H  M3 G5 p0 G
[+ n  a$ m, a8 I. }8 z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 z+ ]7 L; F. ~3 S  ?1 [set i
/ R9 h& H2 s2 Q' x( i + 1)

7 B7 Q9 e. N0 ^% y], @1 r" D, _: @) L8 A
let j 3
3 w$ b2 A: C. R; M* R3 ulet sum-money 00 M  M, l7 `& m8 ~/ W/ w
while[j < [trade-record-one-len] of myself]- \% s0 Y6 B/ t9 W
[4 V0 G! P6 T' p& R
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)* I' _. g; f1 c  H& {* F
set j6 d. J7 X0 V- U% x1 v# f
( j + 1)
$ `+ L; ~% S% w0 J- F( @) b
]
" R& J1 N# F* H# s, alet k 3
6 n. T. Z5 P8 O9 elet power 0
8 Y7 }# L$ p- H5 r* olet local 0
3 c3 ~5 w: w6 ]8 S, O5 Owhile [k <[trade-record-one-len] of myself]2 K8 {( D5 ^$ q; q. I
[
& Y: |1 v: ]! s9 `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) 0 Z9 E, K! T) _; g6 m
set k (k + 1)" a% c7 Y# w1 c/ a( u, `3 J
]+ E9 n1 n# Z' A% ~; M4 F: J$ ?
set [local-reputation] of myself (local)
& N2 U5 l6 G2 @6 E! Xend
( I) G& i" X2 ^; E
0 T6 w, Y# Z/ f0 b! S0 {to update-neighbor-total# |6 o- Q" ^& o5 @7 e+ d7 z5 o
2 m$ T$ ^: Q8 \$ R2 k2 l* q0 ?* [
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 X6 \7 Z8 J( ?3 ^1 x5 g% s6 ~, e1 v4 ]1 c- O# G9 M
( S0 s7 {, x# E( s! e) ^  `
end
$ M6 ]7 }/ L- c9 Q3 u
  `! Y6 f  e/ H5 _( dto update-credibility-ijl
/ R9 D, G. |6 w$ j) ~1 p
, r. F$ s+ B" {0 ^;;
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# s' H- a# B
let l 0
0 O$ H- U( O0 m; Awhile[ l < people ]
( L7 Z/ T/ i' w/ r: y" v- ?;;
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 T1 \+ H+ D+ J2 G
[; S' c- p" I5 j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' I2 ^2 w# L/ e$ v; A) n
if (trade-record-one-j-l-len > 3)' |( I: {7 F' K; {; j( b: `
[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$ h$ s# p( E, f- s, Y. K3 Y
let i 3
. S( u2 L7 T: Hlet sum-time 0
' s; m3 A% V5 }while[i < trade-record-one-len]1 P4 E( }" @) u* _
[
! J$ Z  Q2 j* _7 U2 ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 Z& o$ g/ Y% X- g8 {
set i
7 i' S5 U& G: {( i + 1)

( A9 M0 R2 X4 g. o0 {" m( j9 y9 C$ ]]
3 d1 Q& x8 h" S+ f* A: Slet credibility-i-j-l 0
; T( z* r# \" w8 {;;i
评价(jjl的评价)
( ?: J& P# U; I9 ~( zlet j 3
) |, {9 J( J# s2 x( F+ d! ?let k 4
/ H) H! v8 P( O) @# Y* gwhile[j < trade-record-one-len]# }" F: _) x* C6 S
[
" Q8 R; C. z, `2 i8 X5 Qwhile [((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  v+ v: o$ l  U3 Z: l8 q
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)
+ l2 f+ P2 v9 A) i2 X2 l! gset j6 @& v" d* m. z
( j + 1)
4 l% N  a' E0 y6 k) U0 ]" @
]0 {, t' _$ y' q9 L, K% i5 X8 d$ e
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 ))! L* B1 q4 r  b6 P, V' U( y
3 E7 v, }+ u. t) j. l
3 u0 B4 B- ~1 }, g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# y. S& ]( u0 {;;
及时更新il的评价质量的评价
1 {" c* ~/ P. t! u9 r- Tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ s& ]/ b9 k; f, M2 ^
set l (l + 1)
# _" O( K  ~8 g; U; e]
# P& w, c/ P7 c! K  \end8 c# W% [( G6 T4 S4 |

8 t) j1 j3 ]  G" ]/ A+ zto update-credibility-list3 E6 z0 s% h) V' B1 L3 }
let i 0/ r7 X) g2 u, ~. e
while[i < people]( f: `4 ?& T0 Q4 ?% x" M
[; k: j  b# q1 `) b# Z; i
let j 0  p2 u+ S4 T- O3 r& V/ U! j
let note 0) w  }( i( U; v) M! R, A; z
let k 0% f, w8 o, ?9 S' d( Q  T1 J0 H
;;
计作出过评价的邻居节点的数目
1 C. n" q( n6 L  F  l4 nwhile[j < people]4 y" g0 ~3 d/ J! S+ T4 e/ U
[
! L. }' `/ o8 Q5 Bif (item j( [credibility] of turtle (i + 1)) != -1)
4 u3 [7 {7 w/ a( @7 |% A;;
判断是否给本turtle的评价质量做出过评价的节点8 Y: J: x7 u4 C9 R& Z, S5 S
[set note (note + item j ([credibility]of turtle (i + 1)))
% h4 u9 H: R) l/ K7 O0 N- R;;*(exp (-(people - 2)))/(people - 2))]
, [# a* b- D# p
set k (k + 1)
9 }4 p: ?7 ^0 C8 T2 ]8 {]  [& }3 ~. }9 b+ |
set j (j + 1)
" J: q4 d1 O! ]% H]
* s/ Q$ O8 G- t  ?& gset note (note *(exp (- (1 / k)))/ k)
) s/ L# ]- R5 N5 \set credibility-list (replace-item i credibility-list note)' i9 T' J+ `5 B0 `6 V
set i (i + 1)
# A: O& ~- U) T; `6 B]4 P7 @" m" V9 o/ r0 X
end
) C/ B6 a% }( M. e" k2 x' k3 ~2 m8 l6 j
to update-global-reputation-list
" \. o/ L( f- n9 ^6 n* O6 v" S: klet j 06 {5 s- F3 A  i" O1 G
while[j < people]. G& Y( d) O! g9 d) i
[
- ^$ {% R: c' elet new 0
$ Y' Q$ s9 Z7 _7 }' [;;
暂存新的一个全局声誉
4 @% w1 @9 s$ r! \5 n/ Elet i 0- y+ S3 [% d8 A9 ?* F. O
let sum-money 01 N; B6 h- j6 G1 @
let credibility-money 0
. @' _  j( p! ewhile [i < people]& F9 n5 x/ V1 L; X* ]6 S
[" \: k3 i2 [' ^/ `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' ]2 i4 I- f6 P& X: [- q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ p" E' g1 r- G8 p# i) aset i (i + 1)
1 T  n. }+ q9 T) Z, X6 I# K]( n$ T$ [! b* R
let k 0
0 q# |6 J, D, \) d7 t& Rlet new1 0% y: I& G9 a% R, S# [
while [k < people]1 v8 l% {# f9 n- t& U$ A9 b
[% r/ w- E) p7 R- d
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)4 C+ H% U; P' Y# ]
set k (k + 1)/ O0 V! v$ e7 h- G, I, R; r* a
]
% ?& ^. r2 {1 L* v) Z# Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% M; X) S7 f( ^+ Tset global-reputation-list (replace-item j global-reputation-list new)5 p7 K6 T; p) c$ u: ?  z9 t5 V: o7 U
set j (j + 1)7 U/ G- V& }" T0 |7 D1 z6 _
]" k+ S, f5 E8 }7 v
end
: `! U7 v- p$ R, j) w3 }1 t# x& z% D' y% j9 I

' o$ T4 h2 _- ~# Q& v+ l% A/ }' m) S1 L
to get-color
7 r7 ^- R6 I" r; W1 F+ z( T8 c3 d) c: X  t
set color blue
- ~4 K5 @. \' X9 X
end2 z( Y  Z! X3 q5 D) z6 X. D6 B

6 J: c9 J( ?+ J: Q1 i3 Rto poll-class
/ r+ P$ ~" E9 h' |, x* R+ Send
3 X2 Z% w6 a/ I" U- Z  A% f* Z3 h
0 Z6 a8 R! D; h& O6 b' E! [# Cto setup-plot1
, `4 Y5 J2 x. m9 B' a) [% \6 b  o' X3 }) a, q6 s) b6 u# D4 F
set-current-plot "Trends-of-Local-reputation"

* ~7 \$ e$ @) r' R( E
# L: h' b( S) H; ~  ~set-plot-x-range 0 xmax
1 U, O! q/ M  k; [

/ r, u- o7 E$ f# _set-plot-y-range 0.0 ymax
8 ~1 I: L: Q7 v
end! @1 l) c- [7 b8 i4 J* E) P
' j3 u& Q: Y* |6 @- R
to setup-plot2% T' W- r) g/ K  f) P" e

* ~. ^+ b5 c9 @" p( Cset-current-plot "Trends-of-global-reputation"

* b1 ^2 z& [7 M) [, m% G4 o* s- d+ r' X- a8 l6 j
set-plot-x-range 0 xmax

6 x' ?1 m! n9 v$ Q; c( u9 \# J
8 @) M, r2 Y# _9 k) Fset-plot-y-range 0.0 ymax

# t! c9 Y. B( _0 f  W7 {" ~+ ~end% D$ m- X& I2 y
; P$ j7 |4 n5 |6 h
to setup-plot3
7 ]" Y' L' w$ {6 `$ f6 j$ [
; E3 W$ R5 M% ?# sset-current-plot "Trends-of-credibility"

) y( h7 G) n- f0 o8 M4 i; o* `$ Q$ o$ ^( [8 [" p( B9 Q9 Y
set-plot-x-range 0 xmax

( a# Y* }3 Z2 R  l
! _& }! h, o& m) c0 Nset-plot-y-range 0.0 ymax

9 h: A/ ]) r: f: z+ Z# Dend
3 @  o9 h2 L! u$ C) I( u/ R& a6 @4 |% l/ v* [; b
to do-plots
3 v" g  U" t+ Lset-current-plot "Trends-of-Local-reputation"
' g1 m& J* o; _$ X3 o& |$ q- hset-current-plot-pen "Honest service"
7 I9 a% [5 l' j  @end
/ a2 B  G- F9 X8 h! s
; z$ E* d) t1 R1 B[ 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.. x: U4 D8 x3 q) _- b! C# w' O
9 s% H" Q5 g3 y  i* U. g
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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