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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:  Y" `" p7 E: G9 k; I& c
to do-business
; o4 F; q9 T" d" v rt random 360
5 k# e8 H% U1 X fd 12 x: x! }/ m  w9 Y7 E% u
ifelse(other turtles-here != nobody)[
. z1 L2 C% G3 y. ?/ h   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.6 y" r; [( y1 U  l  F. ~3 z* w
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ i: y+ ^7 `: M! P: t   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. N5 R: {: h0 d: I4 s5 C   set [trade-record-one-len] of self length [trade-record-one] of self
/ G, O0 g0 L% a, G- `   set trade-record-current( list (timer) (random money-upper-limit))2 }2 _0 K/ {3 x1 t# z4 p! R
6 y7 g4 p( j$ i2 e
问题的提示如下:
1 Z# u) `2 J9 o$ c7 W' _! T  `2 ]5 H6 }7 p/ j7 C
error while turtle 50 running OF in procedure DO-BUSINESS0 b* {7 x: C5 F: P$ S+ c" x( u
  called by procedure GO
+ [7 ^( ^" b0 ]& x( W# J" G( QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 q7 h( D0 X$ o- x8 \
(halted running of go). N) Y  }; \) q7 P& R/ d& u& V3 E3 {

5 m" T% K# ~0 z. H# m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~~
2 u6 C* O& c" ~' S' A( Q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
# ^/ m! p/ `* N- g9 ~globals[
& M9 L% ^) m0 Qxmax
+ j. o( A% h; r! }4 bymax
* n6 o0 s1 s- g7 t, u( oglobal-reputation-list
& V4 `( u3 W( x, u; V
. ?: E* V0 ~) H* s9 M;;
每一个turtle的全局声誉都存在此LIST1 s$ }: u! w: P$ g0 U
credibility-list; l1 X3 p' a; l# G- o
;;
每一个turtle的评价可信度. x4 p6 R$ J$ n( E0 b
honest-service+ X* m% ^+ t8 }7 H
unhonest-service
2 d7 e( }6 M9 _0 ]1 U/ U( J, Soscillation
  d9 |7 O- B5 Krand-dynamic5 T$ y- j  }4 Y) `& |2 v
]" v3 [1 g, n, l" L- [! `6 w

$ S1 a) @( j1 h, \- oturtles-own[# p& k2 w) M& t7 }, _
trade-record-all
8 T/ _7 Y4 }; y3 m+ d, i;;a list of lists,
trade-record-one组成
2 y, A0 K" I2 K" c4 a( ^: Jtrade-record-one
. S0 }8 h/ ~' o4 b9 {0 R;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, d& b3 m! B- g
! {, w, Q7 v/ \6 ^- \7 M- C+ {;;[
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! [5 \; N! }, ltrade-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]" a" g& G+ K- d% L5 G" P
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( {$ j' F- [& Z% C2 G5 H( f! f$ S0 P
neighbor-total
2 _6 v; K' D% L;;
记录该turtle的邻居节点的数目# D* F! a" ~6 D! R$ |" q# ^& E
trade-time* Z7 H* E9 h/ Q$ g+ E  f, c* Y
;;
当前发生交易的turtle的交易时间
" G1 x' w6 V( M  A% j9 V- Iappraise-give
5 `* a# V1 o- V;;
当前发生交易时给出的评价. T8 L1 P4 B3 v9 G- n( J; z  R
appraise-receive9 g( \: r( e$ E; H# B' O
;;
当前发生交易时收到的评价; T% W  C; \, Y' j
appraise-time
5 E5 v: N5 Z2 e2 c! ^;;
当前发生交易时的评价时间- A1 w" T$ s- J% E" j, ?5 g# ?& n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉; T- X9 t3 g5 J( ?. E. ]( `' M2 _
trade-times-total" y, \! v) U0 z& n' x* @
;;
与当前turtle的交易总次数
+ n: f4 M) g( X* Z& c9 Qtrade-money-total0 ?: S6 T4 G# u* }$ }5 d
;;
与当前turtle的交易总金额& o: i; u/ X  a: i+ x$ @3 o* i
local-reputation
. Y% C+ e, f( U! M9 Z, @global-reputation
$ B6 ^$ _& b* n* dcredibility
( Q& w8 W4 z4 O* i. w5 \;;
评价可信度,每次交易后都需要更新/ [2 n8 v6 `: z+ y
credibility-all) N7 E6 I/ d' @% e8 Z, i; B
;;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
8 y6 M- l  ?7 H* }- v/ B! w  R6 l! m1 S0 D0 b3 i( S
;;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. U7 \  p+ s1 P' C) v% y' [
credibility-one) g( ^2 t( q7 k9 y
;;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) h2 }* [2 }) ^3 |% x- K* K9 h  X9 Q
global-proportion2 ~; K9 j3 x/ b$ r; Y% P8 Y
customer% d5 V/ F$ ]/ h# p  D7 [7 `/ k$ |
customer-no
. M+ o/ Z7 J4 ~trust-ok
' S/ N$ A- h, \trade-record-one-len;;trade-record-one的长度) L* J! Q* K* r! F& a
]
: Z( K6 @2 j+ I8 r. ?  {6 w" ^9 m1 n+ s3 ^4 U: V7 z; ~
;;setup procedure
  v$ ^6 b* L9 Y' ]" m0 [- S% ~- E6 N
/ K4 U# E" f& [to setup% m+ {' L. U$ E' u. n0 J) R  }
" \) N- ?7 p% j9 Q0 b# g
ca

7 B- o2 W4 x, d* }+ @
' v" U+ Q# w3 U( Qinitialize-settings
' T# G6 q4 f" w+ F7 g) s9 p

* H( ~/ F6 v. L8 ^9 i. gcrt people [setup-turtles]

- M. Y+ Y8 b( e  ?- W& }$ d5 E+ x
! T; I& u8 ?  i7 S! V1 Yreset-timer
1 [) |2 G, S4 a" ^5 t' g
5 G# L' ]8 E# G
poll-class

; g5 y- v% e. e$ C& f
2 U1 _  H% r/ }6 K$ hsetup-plots

0 v# _" w+ d+ `& p# v9 `5 e: J8 ^8 v: H% \; a
do-plots
, e) O1 f/ e; Y- W
end
! Q9 g9 s7 |+ v, V, U" U
% c: d3 J5 C8 gto initialize-settings  D2 B. _' [8 b9 R

2 y+ |* U4 Q! A$ R  ^: ?+ i" H- Aset global-reputation-list []
6 ]& O+ r/ y: U0 j# c6 d& w- j! O0 s

+ m+ `; }2 C( x9 L; m. }set credibility-list n-values people [0.5]
5 G+ y1 Z' k2 U2 P- a/ t6 q

# E6 \% N9 j9 G, _' Pset honest-service 0

! j2 O6 R1 i6 {: u
5 X. f; ~2 {1 V3 w, jset unhonest-service 0

; \: V! W" @& V8 K) s! C" U  W, x3 ~1 ^
set oscillation 0

5 T* f& ^4 K' N2 _4 @- E0 ^: H+ x, a5 u9 A, |2 i. Y
set rand-dynamic 0
7 k; ?" W; q- X5 s
end1 u* `( H2 I3 F6 |: t

  ?) v/ e. Z  `5 W; Zto setup-turtles
4 |/ {8 n  m& m8 O1 ?$ }set shape "person"9 B% f5 [" _: z+ a8 h1 s
setxy random-xcor random-ycor
) }1 _' s# i' I# m: t+ s& |+ ?set trade-record-one []9 ^) @! R$ B& P8 u$ ^: u
2 J3 y1 y# M  \8 T  C
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 D9 h; m1 d" h, j: \: R2 r3 l+ Q

+ G$ j( X) q; N0 wset trade-record-current []
9 y! T+ W* u0 O) gset credibility-receive []
/ H0 [$ `; Z% p. H; d8 x7 Rset local-reputation 0.56 Y9 T) J+ n' ]% x: ?
set neighbor-total 0: ~' U. f* q" t, e$ n- s
set trade-times-total 0
( r3 M2 j2 `. y) Jset trade-money-total 0
6 {' \+ k6 w  d* D0 N* Cset customer nobody
# t( M9 y" `. `6 d5 ~9 Sset credibility-all n-values people [creat-credibility]: }% B" R/ E0 B$ ~/ |! F
set credibility n-values people [-1]
% E9 e3 \8 _  @8 `' m1 L4 o9 Vget-color
, |  @. H% V4 I, ^  |- o

$ v8 {. [& Z& z7 E0 Fend
3 [/ Y1 @* F0 |- Y" n# s+ X" |! ]  h' n) D. r8 B1 x
to-report creat-credibility- |4 ]8 b& y+ [- }" p9 v" I( `9 J
report n-values people [0.5]1 i3 r5 C: @* M
end
" q: L, e( M' H( o/ r
& K8 e/ j0 M5 n/ D$ x% H3 ito setup-plots
8 R! h+ V9 E( O# h7 Q5 E: s, R& w8 _- W! S" T# f
set xmax 30

4 L6 \6 k1 W4 }! X* v+ [- y" A, e$ `  I; T! L6 j: s
set ymax 1.0
( [. Z  J) c( u2 y# ]  ~2 E7 @
; C, o4 [2 ]4 B! c9 R! D6 h
clear-all-plots
* d" s6 R1 k/ E9 N  q# G

( a6 E3 u8 t. e* p7 U+ Psetup-plot1

: a. Y& c9 W1 N' q7 ?
, n1 Q/ y1 p# e; c: Usetup-plot2

  j0 C; n/ D  u- ^* }) ?; h
8 Q- Y/ b2 [( Isetup-plot3
9 C  q* J& `0 ?$ j
end+ [" _2 u! }% s9 [+ `
7 v. |) h( E- G, ]* H& k8 {
;;run time procedures
' L- A" B- ~9 r7 H" ^, J% D5 z: V" G5 S: Q1 V3 T
to go
! T# ]0 d; w) B# M4 t7 ^0 r7 k5 r2 J# r
ask turtles [do-business]
" G0 }# `/ Y! H1 C
end# t' V5 M6 t! D
6 t: x3 Z8 r9 t! X6 K* d: d
to do-business
4 y  `% N( |' s( k! w7 \$ d4 H

3 [) c  ]) s6 q; z8 K
" I3 L8 p5 d  ]% f+ \' z: i+ U, `rt random 360
) O' X2 k0 m# S8 D- f0 @9 Z
9 a8 k$ H) G' S4 r5 z8 b
fd 1
( i; q: `9 m* q1 w7 A! x
2 k- K& F  i. K3 l9 g/ @7 n
ifelse(other turtles-here != nobody)[

$ c5 s: y0 P; A; k( H6 y  {% Z* F4 G1 U: o) d) g2 ]" P* e! M
set customer one-of other turtles-here

6 G% _) f) s: K; l/ ~( N/ ?) S' J0 E+ a5 Y- k/ D  P
;; set [customer] of customer myself

/ L+ l) Z0 P$ L3 K$ o) v' w% M; x8 f3 ?1 K& b
set [trade-record-one] of self item (([who] of customer) - 1)- ?! l3 |' r( t: }+ v. c
[trade-record-all]of self
3 X& W4 C; ^3 K% d: W1 p;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 b  y" |6 N1 M$ d
, m; N2 M- m+ b
set [trade-record-one] of customer item (([who] of self) - 1)3 j4 }" y: T, M
[trade-record-all]of customer
  ]8 c" ^: [$ B' E/ Y

% s( R0 }: Y/ ~- tset [trade-record-one-len] of self length [trade-record-one] of self

" K( {6 o5 A% U, S, C8 ^7 e
- N8 B/ l- Q5 @5 N) w: Dset trade-record-current( list (timer) (random money-upper-limit))
8 l/ @; \  N# D
, e; Q! f2 u$ ~# t
ask self [do-trust]
/ f5 z; o# A6 f) s6 b; F( f;;
先求ij的信任度/ c. M! k4 G, i- J9 x0 Q& K

* L5 m0 ?' h- x" B6 J' R/ V. ^+ gif ([trust-ok] of self)
3 k& ?, c5 {: C0 w2 J( m9 \/ @8 B+ m;;
根据ij的信任度来决定是否与j进行交易[+ w: t  e& q# `* Z, w, t, u" l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( |) Q0 k1 N/ `, }3 G0 B2 c6 z9 U: u+ }4 s/ a8 }
[
& R# j4 {+ M1 A8 X
- c# T7 c5 {/ Q; {' z9 S
do-trade

3 w1 }6 V6 v( W2 S& p
' Z$ |: J1 \' G, |- @( _- Kupdate-credibility-ijl

' m; G# C; a" o" @) n- C4 t) Y$ c3 e
update-credibility-list
3 p0 U; x2 n0 W& M( d
1 |9 j- u3 @- y/ P1 g0 A! ~
1 \5 i* e5 {4 \
update-global-reputation-list
( e7 O. @) M! ^# R
, F; q3 C( C+ Q: ]1 B8 b: s1 R
poll-class
( n0 w% b( I; Y1 g# ~

5 H; a0 |' @, C2 Aget-color

3 @( h7 O1 q, G/ }# A
( q) O" R% U4 N- t* e]]
8 o% s; b6 ?0 e! ^3 D
- G2 y) F3 m; @: R4 e;;
如果所得的信任度满足条件,则进行交易* [% G- {4 p' l1 q* S4 ~3 {

2 H. N* K& _  m: q( G[

% y* ]7 |  a  t- b6 U' s; T* @" n# |4 P3 o( q( P' ]8 z
rt random 360

) r7 g% t. o& x6 W( E$ p: e8 b, W3 x+ U) S4 n7 W- N# R' x6 e
fd 1

# E$ Q0 n# J" d
+ m9 V- B) x3 o! F]
' B, W# u# [' d: L1 O" p) C
1 E2 `8 n0 L' ?7 _3 H
end

9 B: Y, b) h9 e3 H9 B3 ~+ X8 o  L
to do-trust
  `1 a/ `" S# z7 rset trust-ok False
  T! k( y- {/ \8 b# P& W( ?8 U6 l% r, Q( ]

0 n* W7 h: p! M3 k* G9 n" jlet max-trade-times 03 ~2 T2 X% b- Q& k/ j" U7 {1 a; s! c8 ]/ |1 L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; q: V! }& Z9 z3 d- nlet max-trade-money 0) }5 V4 T+ d7 K# M& E+ L+ Y  a1 D
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; `! J8 W& u8 t% ^/ ?& wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ W3 O' A; z7 A3 b# o" f+ ?& f, z* R$ N6 ^1 ^) a, |4 ]0 ?
/ g# [( A3 n5 a
get-global-proportion
1 }" Q. O# `2 a$ v' ]" T$ v) E6 m- |let trust-value
/ F; i" y& U: Elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
0 d& p) ~* s4 {2 b) F+ ]  t( q
if(trust-value > trade-trust-value)
6 ?- @; q7 l2 u' _0 Y  J9 S[set trust-ok true]
2 B9 P" l- t1 w! X% N& @end
( ~. r7 f0 q0 G4 S. P6 h# x7 ~. f( I1 e, b; }  [* x% Z
to get-global-proportion
  G) k, w3 [+ Q1 iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- }+ `! |( @* Z9 r, M* X
[set global-proportion 0]
- i# F# H$ V6 X# ?5 U5 ?[let i 0
$ D. ~. X1 [" r/ flet sum-money 0$ R9 y% S0 f  w# x3 v9 s8 a
while[ i < people]
2 d7 E& A6 d6 G2 n[+ o9 G: R  a' i/ `- V
if( length (item i
9 ?, k9 e* c" |' M5 {[trade-record-all] of customer) > 3 )

7 l3 w0 z, q. N% s+ W[
) P) H: {4 @8 w# p, G# eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 `& I/ [% a' _7 B) d) }- u- c% E0 c]  n( @4 y& r0 k" V% p* _
]
, N6 B5 i2 {* c! m0 zlet j 0
4 Q, t" |' {7 Z8 Elet note 03 G0 q# W" M2 Z' @
while[ j < people]" z# X. x" k! N, [0 U
[
) G7 {+ V+ [# C. V! p. l3 Hif( length (item i
3 I. v  `: Y# X7 A[trade-record-all] of customer) > 3 )
6 Q: E! U) w  Y5 U8 k+ F; b+ ~
[
2 @6 b2 `# N. |$ Y& H/ M; D# ?4 Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ l8 E# ?) B1 V6 J/ u7 C2 Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; O2 U+ y, X) L% K4 N6 H
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 s# t, V7 H8 p& }8 f/ |]
) F/ w" \9 l! D. k; []
% w3 |2 Y& A$ i  r, \set global-proportion note
8 }! o% R/ ~& I. X% J; ^; u]0 E1 q( @8 ~3 `' x
end
! M5 r, u9 {4 e5 ~
& D. s" u+ j2 r% ^6 b' B- Jto do-trade
9 x& w7 ^! C) g" D6 J5 s: ^;;
这个过程实际上是给双方作出评价的过程( N8 h; O! J& q* q2 G; F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: \3 \7 @; z: T0 x9 Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: [  F7 }9 O8 U* ~- z" f6 ~set trade-record-current lput(timer) trade-record-current) X$ S2 G3 w) |, y# i/ A
;;
评价时间( X3 P* a* K3 ?+ P+ G, D' ]
ask myself [' r# E+ n9 y7 t( {: c  a
update-local-reputation
/ Q3 X# e* T/ Z& t+ u, j  Wset trade-record-current lput([local-reputation] of myself) trade-record-current* v& h! T( M: W; z# z
]+ ~8 B8 o2 O8 K6 [
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 k$ E# X' _! ~5 S1 {/ t" V9 t
;;
将此次交易的记录加入到trade-record-one
4 C8 C% z- R4 L, L: m* Z' Oset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( ^, L, z, n; r2 t9 D5 f) K
let note (item 2 trade-record-current )
, s; c; B/ d' A" d: fset trade-record-current  @1 o! q) @& c- [9 K
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 K6 J, I5 V5 o& l: a8 [4 c7 F4 A6 l
set trade-record-current
. K" R7 a  A+ }! E4 [7 k(replace-item 3 trade-record-current note)
, y- F; ~1 O2 c' u4 F! w; W. J$ Y6 `% ~% h
7 Y0 O# G8 p) U0 Y( Z8 e
ask customer [
7 M3 r7 u! L: Supdate-local-reputation5 Y8 [, b+ y! d6 r
set trade-record-current4 O7 A1 p' G) k5 Z2 e' ~* d$ d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# H% s: R5 B( F4 A+ m& r5 C' m7 e" X
]- k0 _# e6 q/ w& x
& W* L5 C1 ^" N; |
) Q% C  b! i4 f, O7 G: Y# Z: J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ s4 Q  G7 B9 W- _4 F
' `) _) S2 `6 t, g( K3 e5 Y! O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 P/ G8 c; f5 K- i# ^; P
;;
将此次交易的记录加入到customertrade-record-all
1 O6 y1 i( P( I6 p$ G7 l* hend% g: e; L0 Z0 s9 @' n- k0 j

- K. _# @+ f8 \- Qto update-local-reputation( v# l$ V& z* Z% O
set [trade-record-one-len] of myself length [trade-record-one] of myself
- B& @3 H" d6 r8 T8 G' n* J  \2 R9 ]* }$ o+ A. F

. v) t/ G0 d- F1 a! f/ b9 ^;;if [trade-record-one-len] of myself > 3
5 l% `5 ^$ F8 d1 e
update-neighbor-total
$ ~  N7 t. o, s2 Y7 b5 N2 l;;
更新邻居节点的数目,在此进行4 S4 j5 C4 {/ k
let i 3
+ @6 E5 S" E, I. Rlet sum-time 0* L# O# I( G  T
while[i < [trade-record-one-len] of myself]
  Z7 X* s  U# u" s$ ~! t[& j: z0 W; z* A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 q( f0 M4 t6 v+ K
set i+ U7 z+ a5 q9 i" f  h4 `, @/ k
( i + 1)

7 c! f% N+ Z/ P]1 N* g3 i& y& f0 a
let j 3
. q2 }5 @2 O) m2 R9 _: Flet sum-money 0  E2 g) h9 R# P3 V$ C6 K- }0 y8 j! v4 U; L
while[j < [trade-record-one-len] of myself]
! ?: I/ z9 W- k; k0 n[
4 O8 h( `: B, @: l$ A0 s; d  qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)  }2 Q7 ~6 b0 q* D) o# t3 l
set j
  L7 Z6 l  U* q9 R( @( j + 1)

1 k4 N" W) i$ P]1 x- r& J* g# ^) ]; Q
let k 3
2 ~& r9 |# M5 X( t; S, D3 _let power 0
! o, k1 a  y7 J3 e& J: xlet local 00 n. E/ [8 z* M. M0 @
while [k <[trade-record-one-len] of myself]
' g" o; [# L6 P. @. E1 ~0 Z[( K6 Q6 K6 j9 h5 U* }8 Z
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) / P2 R$ C2 X( a/ X6 ]( r
set k (k + 1)
" d' f0 x' Z2 f/ S]0 s0 l5 ]1 G1 M* `, a2 h* I
set [local-reputation] of myself (local)
. z* F+ B" a' ^! d& Z# P2 uend
( R- e( ^5 G( y8 y
+ u1 R1 C4 j: ]- v' @# Fto update-neighbor-total: W1 p6 U: x8 C. q9 @0 e4 ~
( s+ x! [& v) |- y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% u% X0 S  ~& Z& ?5 m
% J( R9 p% |5 }: e

% }5 ^5 @  h  m5 X8 @end
& X. J9 t  Z4 B2 m0 {1 ^, Y" d; W8 z; V, j: q0 p+ S
to update-credibility-ijl
; a8 b+ ]4 L$ s7 L# e# _0 d: a: R' h" H8 h( f, [5 R$ e: c
;;
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。
+ K. p6 R5 G& u/ Q6 E! Mlet l 0$ p% Y3 W) C2 g1 E
while[ l < people ]8 I0 i, ~/ c' G8 w4 M4 ^) `
;;
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' |% f# L- o. O4 D( n7 t0 k8 I: {
[, l& p' J. W- \/ g
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)  @: w) Y* H7 L" D: d' J
if (trade-record-one-j-l-len > 3)
, K! w0 v  d  ^: l* f2 J; h[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+ r5 Y! C, [! V% m7 Z
let i 3
% A- k9 u/ x: _* F% y0 N  w7 q1 Ilet sum-time 05 ?/ _. Y( j; N
while[i < trade-record-one-len]
* u0 Q5 [% Q* T( F' r" x" d[8 o" @. p2 @& X$ w* [! t
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ \- V( T# v" a' ]; lset i1 O2 N" [( f3 @4 I
( i + 1)

  E5 a8 R0 _; ~* i" M. r]
& S- k) f: ]1 R& z0 elet credibility-i-j-l 0
  e: F7 z% c) m4 l' @. e;;i
评价(jjl的评价)
+ O. F, L( u7 Elet j 32 ]7 e: Z' I# Q$ j: s2 {" p! S( D  h+ K, a
let k 4# M; |% t, U) B8 T' Z
while[j < trade-record-one-len]
5 n2 Z! u5 J; _[" S6 v3 _& c8 D0 v3 O
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" ^! D: _& ]4 q2 _  S
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)
! v8 ]# _+ T6 gset j
1 z! J( B; X/ }% w( j + 1)

0 [+ h, P( Q9 j]
- \: Z; O9 q  i/ Oset [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 ))
8 T# g; p& F' y: H9 e' J
7 M: \) K% x4 i) d- e* d

* `' i0 v" c" Q7 m+ ?9 h$ ^, L6 Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 O$ x/ I& i7 g+ P;;
及时更新il的评价质量的评价
$ q5 w$ T% a5 R+ f; S9 _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 Z. F- ~" a& s7 T5 L) Hset l (l + 1)( ]% f2 Q/ O* z. |6 c
]
' g, {! g( [/ w6 B. R4 iend1 z, G3 x: X, Y0 r6 I* A) r; u
. h' j9 L9 I7 n  w3 s
to update-credibility-list& q, ?7 t+ Q( j( q. _
let i 0
9 F( |( L! t9 O/ K* o, R. Fwhile[i < people]" o: `. C0 K+ ]8 b! q8 Z: C6 O
[$ j6 n, S! E& J' D: {6 ~" Z# A  G
let j 0. @) q7 h8 W$ s8 R% B6 d- `
let note 0
8 ]! z& E1 a* Z: K, p( ^9 s* alet k 0  X& v- y& I9 L$ B( C
;;
计作出过评价的邻居节点的数目2 e) n1 J5 Q6 N$ Q3 Y
while[j < people]
3 k1 \. v6 J3 O! B  K+ r[! V8 E! R. D5 M  l6 R2 Z
if (item j( [credibility] of turtle (i + 1)) != -1)
+ {( f) l- }8 w9 m. v;;
判断是否给本turtle的评价质量做出过评价的节点) A5 C& y2 C2 e  N: W3 J
[set note (note + item j ([credibility]of turtle (i + 1)))
" \2 ?; H+ q% c! i;;*(exp (-(people - 2)))/(people - 2))]

' E. H- d' a5 o$ b' [set k (k + 1)
8 }* K4 ^6 ^3 ~6 H, s1 x. u6 m]5 z+ |- H3 B& g6 X# u6 e: X
set j (j + 1)
5 j" I) r4 `0 s; C1 F# [' D8 ^]
- f' L  x- G4 Y5 }set note (note *(exp (- (1 / k)))/ k)
0 a! V; v" ~; s4 {1 yset credibility-list (replace-item i credibility-list note)* ?2 L, M* a9 _! _
set i (i + 1)6 M' p% S( I, Q7 a
]! \8 f. J3 m, g' V5 j" ]
end
1 q5 U* s2 ]4 \/ Y3 {7 ~# _" N
. N' |' K) _- R8 |0 N( o% O+ I- W! G  Cto update-global-reputation-list
8 i9 R' |1 i+ A( T* Flet j 09 f1 i7 n6 Y, X
while[j < people]3 l9 c0 [. M" J3 z( g* }3 s
[8 s$ N/ X1 G. I3 A" D! u
let new 0
: N/ d- O4 I- H8 k: p5 [7 U;;
暂存新的一个全局声誉5 k' j3 W0 `! j; n3 R! L  Y
let i 0. Y6 a( \. P. O( N; P
let sum-money 0
# E: s1 F3 S4 wlet credibility-money 0( |3 T6 x) P. p$ }
while [i < people]8 E! d+ X- s' s# f+ ^1 g) Q5 m
[+ D  b1 F( L$ M9 k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- k. z- e8 N/ W- e4 fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# k( c! A9 M' ?1 n2 L
set i (i + 1)- ]; h8 M) v3 i$ o. R9 E* ?- u
]! w. q, N% `$ l# c1 `2 y. y8 e3 _
let k 0
$ F& e: {0 Q3 p5 Z/ a/ dlet new1 0& j( u2 }/ p- M0 m
while [k < people]# U7 Z/ y! ]* N/ x* D
[8 N& D) o$ ~5 f# V" s
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)
, j# U0 `* p2 Hset k (k + 1)6 _  o7 J* n3 R, A1 w0 z4 w
]+ w1 @! h0 @; M+ h8 r& l
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" @: d" ~& d  X4 X0 Wset global-reputation-list (replace-item j global-reputation-list new)7 ^" c- s1 B5 S- P" k$ L
set j (j + 1)
- H) w7 U) X: a/ `- n, Z]5 n$ u* ]- C) E$ K4 X7 \
end8 Y( K" `7 g! w' o2 Z
( H" Y7 Y9 E; Q$ @: C

6 q5 Z' n) I$ T; z2 s' K. r* `0 \1 \8 d
to get-color; p8 Q8 q! O3 Q3 C) \( l2 \

. h  X& }* o1 v/ @0 y7 k/ xset color blue

5 y& h/ N4 |" j$ w: }7 x, W9 Eend) c9 q: \! _5 V* H0 b1 s7 R1 C7 M
. @. D  B8 X; }# w
to poll-class
9 o: W) \; k& ?" L- M( U2 L3 p3 Oend& g! U/ _7 h2 [+ _
% Y$ k) K2 M- K# O/ O8 ^2 u
to setup-plot13 z: M$ ?9 G' A8 {
0 i! T  F) |; ^3 h2 K( y; q, ?
set-current-plot "Trends-of-Local-reputation"
8 \! z  Y2 y; T, a9 H- z: _; `
; O3 `, L) i, ?* h) K% p
set-plot-x-range 0 xmax
/ j; X8 l* Z9 N2 K3 _8 P- d- N
+ I9 k3 {+ K5 ?% M% h
set-plot-y-range 0.0 ymax

  _' q% X# }+ z. [; d( oend
: Q1 |9 j1 M: @8 `
  ?. G) H4 A7 Z& _1 Gto setup-plot26 v8 {; M9 P) f- ^6 K- z
  l! d: V8 _& l( B* c! Q) P4 A
set-current-plot "Trends-of-global-reputation"

6 N' k4 `; F5 N6 J0 r% w
# `  Q0 n% `! o$ G+ K0 gset-plot-x-range 0 xmax
2 v2 K# ?6 O, Z6 A6 R

* N2 o6 ]  P; [) ?1 Fset-plot-y-range 0.0 ymax
1 ]0 B* a4 D' v8 [, W
end
! @6 ]  X4 f( D" q
/ }8 X+ p" g$ {1 o, F8 j, T$ Eto setup-plot3) m, ?( l/ ~6 ^  r
& V+ Q  t" X! Q; |5 m& J* T
set-current-plot "Trends-of-credibility"

) G, Z9 A6 S* y8 \+ K
$ [& G) A* R# Y& Z% s! ^% eset-plot-x-range 0 xmax

8 I2 j7 \/ n% k) T; c7 T8 U; j" d* }
9 l. a7 r0 a$ z$ T& \& K) Eset-plot-y-range 0.0 ymax

- A! V% ^. f$ w$ P  \end. O5 i5 K% V9 e* B& n& U2 d/ E4 S+ m

" j, ~% {: ]% mto do-plots
7 z+ H' f. }# u- A" vset-current-plot "Trends-of-Local-reputation"8 K# T9 l6 ^+ o5 o) N  E
set-current-plot-pen "Honest service"
/ B6 t: h+ d; }end
; {6 U! A- l8 O3 M% U: G
) H8 K  t1 u) R( v( j, 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.+ P5 Q' L$ f8 l7 t

' }0 f* n/ r" u- H. G2 Z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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