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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:% o3 U2 X( D0 ^% |1 s; }
to do-business * ]4 L% b2 P0 c" f2 c3 D0 l3 R
rt random 360
. \+ j, U9 b: ~# N( C- N! U3 F fd 1) J  k  s0 g: G  b" a! G" B
ifelse(other turtles-here != nobody)[6 G% a' ^0 T% f7 {1 ~5 W, O7 Y
   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.9 U: a; A! a( b6 R" ^
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 N8 l1 W* @( j# v* Y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# v3 i7 `- r) j/ h. Z
   set [trade-record-one-len] of self length [trade-record-one] of self8 W  w5 o$ i7 l2 A  O$ L: W
   set trade-record-current( list (timer) (random money-upper-limit))
# a2 b* \0 Q! W8 t8 u. J
7 {5 h: r6 D+ Y* S5 z2 V; X- a问题的提示如下:2 I$ T( B8 S0 D4 H# h  ?* k1 I

& }, ^8 M- C$ Werror while turtle 50 running OF in procedure DO-BUSINESS# h; J5 F3 E5 }, p
  called by procedure GO
! M6 p: B, b+ C, O& XOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 u: @; S$ O4 c9 q/ w
(halted running of go)
9 N4 B' p) e' A" {$ h2 f+ X5 V( L: W; e7 ^3 j9 |0 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~~
9 L$ a$ }2 `1 i/ p4 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5 Y1 D) _+ G0 ]# P. p( w1 ?
globals[
! Q; f4 O' O) s5 Txmax
, G2 }4 H3 W) V( y/ N1 Eymax
' G8 z7 b& D: d5 _global-reputation-list
4 y+ ?1 b( O, i1 J1 a% d# |4 R+ S: v; g. F2 w% y2 ]5 _9 o
;;
每一个turtle的全局声誉都存在此LIST* y% n/ f% }' x& J
credibility-list3 i+ P9 S" z7 _( U' |
;;
每一个turtle的评价可信度3 `. u% ?5 Z4 ?* {3 V+ v9 F
honest-service# R; R# Q" f. F$ j9 X9 C, S
unhonest-service
! q4 b, d3 h+ ]5 g$ o. Z# zoscillation" o) I( T, \7 m; c& ?, O, S  J
rand-dynamic9 Q% j9 a' P3 ?( a; g
]/ J9 a* d9 h- l1 y( ~
! C( i: Z& Q, D, i
turtles-own[
/ t: ?& a; ^/ g% i: }" Ltrade-record-all8 @! Q5 v$ d1 }! z* K4 T
;;a list of lists,
trade-record-one组成
0 E5 z% e4 @. D% m+ R+ u. qtrade-record-one! R9 I" i" s: k* |0 @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
% |4 C" D! [0 N9 A7 A: |6 k% D" d- M: e
;;[
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]]! y7 H# h* ^( S3 w" ?0 K% R
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]
+ K9 t8 F! q* ?0 P1 ?5 l7 P1 xcredibility-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+ `7 k, y, q: ^- F  d
neighbor-total
9 \7 j; @4 s. t;;
记录该turtle的邻居节点的数目
9 K  \9 E  K- ^2 f( S. Mtrade-time0 v' z5 a! @  g% C) q3 z
;;
当前发生交易的turtle的交易时间
/ @, J) O! V( _appraise-give
" B3 o7 U6 L" ?* o0 V3 F6 l;;
当前发生交易时给出的评价
8 f5 h" A  v# S  k0 Uappraise-receive( m# {& [# Y" R% w
;;
当前发生交易时收到的评价1 R) ]2 G0 M6 w- N8 A
appraise-time
% k6 J* O' w7 M4 `;;
当前发生交易时的评价时间
/ X/ q  T% o$ e+ v# plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) N# E) D4 C* D% K4 ^$ A6 V4 utrade-times-total  V& ]/ r+ V$ K4 A! b
;;
与当前turtle的交易总次数
! M9 G+ V$ o, I/ a: Ftrade-money-total* n1 k4 E7 X$ D5 f3 z
;;
与当前turtle的交易总金额, \% u/ l. `) T, i! n4 y* r9 T
local-reputation
0 R  }; {9 G2 U  T& s* z/ Iglobal-reputation4 c! \& Y: [5 [+ _8 m
credibility5 h/ U$ W  h% p. B. i
;;
评价可信度,每次交易后都需要更新3 o, E: j. o: I! Q+ q
credibility-all
% r2 p( u) b. B* k$ 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
# L6 \+ x, ^& o! `# Z& G
* V, {% n8 [' L* s- b;;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
5 L2 A$ L( @, T8 U' Xcredibility-one0 t9 n$ Y/ Z, W( X2 o9 N- I
;;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people0 j9 O) ^9 j2 g9 s9 Z
global-proportion
' R. b( i8 {9 C& @customer. s) `, K- R  J, ^' z
customer-no$ l; Y3 w; O0 A! D8 k
trust-ok: y3 @/ S) C& c* u: z5 S
trade-record-one-len;;trade-record-one的长度
4 u/ u% a6 O, H9 z  F; ?' c* }2 K]3 \: }4 b2 S! h* G
% D$ c: ?9 Q( {0 I0 T
;;setup procedure7 ^. D, z8 M2 I
5 R$ L% P: [* I  a5 @# A
to setup
) k; C2 \+ \: Y9 u1 H
% d7 M+ y% f# tca
* O# k/ x& ]1 M2 C: L

& K2 y& R6 Y4 Pinitialize-settings
7 y; p( C) w2 z

. s; c1 R+ p% D# M, ~& z" f' |0 Qcrt people [setup-turtles]

8 a2 ^1 |0 g' G$ R" o( A
7 |; P9 u! l' N& H/ Preset-timer
. ~% ]# o4 y* {% p, a

( f4 `6 @$ Q1 O* ~+ ~; \poll-class

$ t- `! v) u8 h: `9 v' A. \6 D. H) ]( A
setup-plots

) A- {' k  V, S% y
$ i( [1 e& l+ }+ fdo-plots
- e* ?/ Z/ J: J% _2 b! s" |
end
; b! }, B0 j- P* s
( Z. a$ }1 |: A! ito initialize-settings' ~# o6 [6 d5 a* `: u, c# z- N$ P

8 B1 t. R1 t" S; s- B8 W$ H1 ]* uset global-reputation-list []
& j' A- Z8 h3 ^5 Z
) b% s5 q/ L6 H0 @% ~
set credibility-list n-values people [0.5]
$ R* N! D; p3 _! d
7 m! S* M2 ^" G2 t- Q6 H, q
set honest-service 0
/ Q% L6 ~) R1 m0 f/ d$ Y" E

" b2 N! ~0 j2 _' W* pset unhonest-service 0

. ?& I# w. s* C$ T
7 u1 D$ n  Y, Y) Q$ Y7 Z, mset oscillation 0
3 I/ `  [; e# W9 T( c; j) I
4 e6 }& W. D( E3 Q( f- v7 Q
set rand-dynamic 0
5 L7 t; N( M, B) X' C3 R7 G/ q
end
5 [) a' D8 B5 |+ D' _
; G9 y9 Q- @- u. ?5 d% V& j4 {to setup-turtles
  T% _) `; K# A4 aset shape "person"
) z; b7 C' h& Z4 j# o/ f8 ]4 z. zsetxy random-xcor random-ycor
9 p# k) g% U7 M0 G! f+ }set trade-record-one []) m  G; p, H2 j4 e

7 ^/ J! j- K7 v1 N" r7 ?2 sset trade-record-all n-values people [(list (? + 1) 0 0)]
2 T) C3 |& z$ {
4 p6 p& M" _; b; H# n% P) q' w
set trade-record-current []& h6 G& d: c2 w* Q% T
set credibility-receive []5 u! M7 z+ W3 z! r+ ]* `# U
set local-reputation 0.5: X8 O% u' U" `  F& Q/ a
set neighbor-total 04 F6 h9 ?& d# Z+ w& `
set trade-times-total 0) g6 s/ v# A% Z: e: r# R
set trade-money-total 00 |* s0 k% ]3 Q2 \) \1 {3 P
set customer nobody2 p  A, q( l& y# r8 K( D' P* l6 r
set credibility-all n-values people [creat-credibility]# e% U1 F, b. N; x" v1 m
set credibility n-values people [-1]+ v1 U2 T0 H8 c0 b; ]
get-color
0 X3 `+ l% L# @3 |; _; x2 X- h
/ x# Z0 e& N; d. A' S( B
end
7 T& D/ \/ H# n) D& ]" G# a* w  L, k, {" J$ f5 d$ U
to-report creat-credibility
; i# ^: x  ]% P& m5 F& m% hreport n-values people [0.5]/ f8 M+ d! @% W- f3 p0 B* s  E* u( F
end8 M6 n5 S) l' N% N
7 e7 j( o5 m( S- ^3 ]
to setup-plots
1 W* Q! i3 X' t8 {- `( N0 o" _0 w, k: q- S8 a* z+ Z5 L
set xmax 30

9 ^" Q* B/ [: h1 k3 o6 w5 X& h  d7 L1 F
set ymax 1.0

, ?* \# {, S. \( l5 i( [# `5 @
* \5 ^8 ~2 `$ I+ E9 [clear-all-plots
3 T! U  U+ w5 |3 m8 _& r
, R$ H8 z/ x) H
setup-plot1

! R" _; U- ~2 t$ t# j8 s  q6 p
# h: x4 C! C, c; {setup-plot2
5 i9 y, S* k# k5 `

: f1 w) j0 P8 V2 u4 g" x$ Z' Usetup-plot3

- r0 i; T6 g+ s3 kend
5 L+ I" x! d: U! r3 K: b# b( j, Q  p2 ]2 L
;;run time procedures  n% D7 y1 H/ O7 E% b$ X
' U7 `7 y  a+ a* e6 a# O
to go) W- h4 _, F$ J# a% T3 Z5 f

3 Y! s0 J  X$ R2 A. _) Nask turtles [do-business]

% O8 t5 B$ K. a" v, w, c1 @end
! ]0 a# l: n) g2 y4 U: a' `4 \5 w, y  i, h
to do-business
, [2 d. ]5 \7 w- J  d; }3 V( n

0 r7 y* L/ e$ J2 d3 S
. P, `0 l  g& X& ~, zrt random 360
% v2 b  ]- Q& H. o% j6 |& Q

9 i9 W0 M$ C2 Y5 v5 ufd 1

5 n# c3 v9 r8 c' i$ t6 q: ~' w5 B; Q
' ]/ s+ T9 I1 f) Fifelse(other turtles-here != nobody)[
% ?! k  L5 e. u3 b. @' W' R

! i; N+ [) p1 ]+ m7 J3 m# Fset customer one-of other turtles-here

' W7 {# M# @3 F- R4 d  K, {0 F! ~% ?7 M5 r+ @+ R& f9 }
;; set [customer] of customer myself
% @0 q% @3 \# N
+ V: p0 w5 D; i: e6 f/ D, ]
set [trade-record-one] of self item (([who] of customer) - 1)$ \7 x. x# U! N- D9 H  t! u
[trade-record-all]of self& `3 M$ r" Z( F5 u7 X8 O" h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 g7 v3 ~6 T; |5 V" Y6 h- }3 E. \
0 W% c) V9 a! d1 n. ]# Bset [trade-record-one] of customer item (([who] of self) - 1)
6 `" T& w# F/ S* i+ h: _& y[trade-record-all]of customer

: {2 k3 J  G2 F' H
- [. B( k. u; p+ H; {5 u) Mset [trade-record-one-len] of self length [trade-record-one] of self
9 @: G, E0 H! @! p8 c
3 D0 l4 `7 `2 r1 h# `
set trade-record-current( list (timer) (random money-upper-limit))

; Y, n- U* m; ?) `4 G! y0 `" M$ k0 i+ F1 V0 g
ask self [do-trust]
& B: o8 B1 R/ r4 ?# \; t& _;;
先求ij的信任度) n' V* f# I% N" K7 G' ^7 a, U7 d

/ u7 W; ^; e2 {' R) }" h5 ?* @if ([trust-ok] of self)
& a1 w5 x2 d" @. P1 [, o1 q;;
根据ij的信任度来决定是否与j进行交易[7 O3 M! \) T# K8 v4 L; i7 r
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 H; J3 {; Y/ n9 Z
" d- A8 u# j1 V
[

6 M8 @) n* b" E& S5 S& B9 @0 t' p9 j" Y6 [, w6 Z
do-trade

0 V! c* M# B6 ]6 `$ u
, @; {7 p2 I# K9 j! n" z6 v0 Fupdate-credibility-ijl
, [8 J8 I, g% o/ O+ x
' D6 ~3 ?  C" n) M. I  v: g9 s9 _
update-credibility-list; v5 z; b. N5 R& x. j7 _2 O
$ ^. E* P# v5 V) E. s4 }

4 F- h; ?' P" A. ?% r0 y0 Z6 z' Wupdate-global-reputation-list
; i0 r" R( t2 c( d0 K

+ U& i3 f" S* f2 x- ipoll-class

! U3 N5 L1 c, O4 b# H  Y# p1 `6 X, d. I
get-color
' `6 e- s+ K" p1 [5 P: v

8 B4 f; S0 ^% W5 J; A3 ~]]3 L6 ?# F2 V7 Y: E% J7 ~
5 N* D( v  Y4 I- b1 F
;;
如果所得的信任度满足条件,则进行交易, n& d- d& L5 g; G% l8 a* W
$ f- `) S9 Z- C/ Y
[
# R. [. U( e/ t: a

) X6 K' S' y/ W. ]rt random 360

! {; p- P: |* U
1 g3 ?1 c5 s  H" u& @fd 1
- `$ }6 y; {. v$ O
+ L* S0 b* K! S. M/ N
]
( B% x/ |, r& A" f3 ?" |( I
' Z/ z: ~# D9 I2 e0 Q6 f+ B0 Z1 F0 i
end

, Z, k3 S3 k/ t1 J; O! h$ m
; N( t* a# M- P/ R! vto do-trust
, u9 q7 A) e% J2 {3 A% dset trust-ok False
. @' M9 u5 f) o: u4 n( e0 `& w* c9 y8 |" `! A
% \; Z- [( k, U& ^$ r
let max-trade-times 04 k3 Z. ]3 ^8 y. t
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# h$ g7 e! K, D( j* f3 v& P
let max-trade-money 0
0 Q& v2 e$ b4 iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) \; s9 F. {( Z. G' I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ a6 f2 p. P. d4 k  p5 j
7 N9 A& n& S0 r  E, w3 h

1 c# B6 G2 B5 `# ^% [7 nget-global-proportion
' M! ?3 |) a8 G5 \- Ulet trust-value. e! q; A  I- H& T
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)

# w; W" m+ Z+ a) ^% z* a& pif(trust-value > trade-trust-value)  l# {! f& H( e
[set trust-ok true]9 T  E) F& \" N) H
end' @* q' q4 m7 P) l0 d, F4 h; H

5 \. j  P7 W6 n2 R! u. vto get-global-proportion7 \- ^; O9 n+ e4 c/ @
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! }3 Q( d* y2 f" k* Z4 @. c
[set global-proportion 0]
3 c; z, n% b* z3 Z$ R[let i 0
, ]% i( ?% D) Y  W+ P/ \let sum-money 0" ^: _4 V9 V8 r, R1 I* h
while[ i < people]% N1 K( @+ w( R* Y: z
[3 ]* \8 w1 s0 |+ p# I% L0 s! b
if( length (item i
5 {( D* T% W3 M( p% I9 Z[trade-record-all] of customer) > 3 )
8 s3 A8 ~, ]) b" c
[
7 @2 i2 V- \4 r. ]& j9 h( cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. S- u- U# h1 S6 S/ e/ M' u& @3 R]
5 d1 y! X' a4 D/ s4 F. _  w]' m$ W9 b: ~' o) }
let j 06 n/ ~5 |* L0 C# e8 s( `
let note 0- `% N# w, k* `% x3 ~- v
while[ j < people]
5 X) h! b* s7 @[
' |+ H; `9 G  F5 aif( length (item i4 d" ~, e; f7 C" d' E
[trade-record-all] of customer) > 3 )

' s$ Z7 E! ~. {2 _7 x/ T2 f[% @+ C5 l  J, o
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% F% T7 `2 K- g/ F5 C& h[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ [; }" `1 c* Y( S4 ^% y) O, g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ X% `+ R$ d# G
]- a+ c$ N+ `2 F
]
4 Y( |6 c8 Q& A/ S. O2 Cset global-proportion note
# g9 e) P  B  T% q]. K* Q: ~' j0 J( }" g
end
' P  i7 q, _8 o" e8 \1 S
" o0 R3 M' A5 b$ u7 A0 i/ N: W2 kto do-trade
& L; J3 f8 q& |+ |# q  M;;
这个过程实际上是给双方作出评价的过程7 g+ [/ Y7 p" T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% C/ \: v) D6 Y1 v) }5 S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 u9 S9 r" U9 D: oset trade-record-current lput(timer) trade-record-current  C( c* _7 G: x9 ~
;;
评价时间
9 b# m( ~8 |7 [# l3 ?) k$ rask myself [
* X8 U1 A7 }) y4 J7 s$ @) a7 wupdate-local-reputation
: a( Q4 C5 _( O' ^set trade-record-current lput([local-reputation] of myself) trade-record-current
! k6 p7 r/ e9 s% i& V. G]
5 R9 e- e# u3 Mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 j$ U1 Q% q. K
;;
将此次交易的记录加入到trade-record-one2 c. A# Z. |/ s; F9 I/ b) g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" I6 n& Z' ~' |
let note (item 2 trade-record-current )' b# x$ N/ ?% M
set trade-record-current
! \, h# L2 J) }. T: Y- J8 Y, m) J(replace-item 2 trade-record-current (item 3 trade-record-current))
+ a4 m$ Q, A$ O: r& `: M( p' x. X2 w
set trade-record-current7 b1 l2 E( R9 n4 X# A
(replace-item 3 trade-record-current note)0 T" |5 D8 q. ]0 X, H1 E& |6 r/ e

* _4 z. b- n# h# R* I4 P8 F5 ^
9 t( b. i2 g/ @( k, y8 }- o
ask customer [" K/ g$ ?/ i  G. K! k6 \: ~
update-local-reputation8 W6 h' M( c$ G5 ~1 |
set trade-record-current
9 ?) n7 F  Z) T  T) |( ]# ~0 _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
# G2 u, v( o% ~8 c8 X6 y
]
9 e( `, G5 f7 S/ _6 S& B, O. i  t7 N# V4 i5 [

5 J- N( S- L/ }5 G2 O. hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ r7 k$ H. j/ s- f& R8 K+ S1 W- E

; l5 y* U6 }8 ?0 [2 T: T1 |set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* s0 i8 G& G: }  Z& J# N;;
将此次交易的记录加入到customertrade-record-all* J, p4 w/ y; b# Q
end
' ^: w% o  @3 X8 y& R# I6 Y2 G! |7 I* [
to update-local-reputation
/ l- ~( ^0 b% ?6 ~* l. S7 a' y! J, S2 Zset [trade-record-one-len] of myself length [trade-record-one] of myself/ N: n/ o  |- O$ E
6 L# m  I4 R; e3 g6 j# U
* T! y, f. o# R
;;if [trade-record-one-len] of myself > 3
8 y- P+ i, c* \# l) F' {9 @
update-neighbor-total! ]! l/ S4 W% F9 U- D# H. m
;;
更新邻居节点的数目,在此进行
2 J2 K5 E- J* }9 u' n1 \2 \4 slet i 3
% k* S) S) d# Y6 l1 e, glet sum-time 0
- d1 L: ?. a  @2 I4 [while[i < [trade-record-one-len] of myself]+ u, ~1 `" U2 T! U. u: L2 m
[
; u2 N7 `+ J, N; k' Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& R+ n' p6 M& vset i" I2 r$ k8 ^! C1 `- a
( i + 1)

; T8 Q+ X, |% g0 w2 s+ C]
: p- m* s: d4 w$ i; l' Rlet j 3' R) k2 X; h6 C. V% @& f
let sum-money 0
0 K  i2 t& S6 z$ H) f. y, ^while[j < [trade-record-one-len] of myself]+ l  N+ I  s3 u0 O# B
[
" q0 x4 x5 _" rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)# l8 K/ |( `7 C: Z6 P2 ~
set j; n) S/ O  a9 ^
( j + 1)

- T* A: R) I# Z9 z9 D5 P5 H, h/ n]
( w) C( v& O1 O  D+ Olet k 3
. n) t( a/ R. g+ [1 D: Hlet power 0) V4 P( J) P' H% ^* l% k' ]; Z
let local 0
/ a% q5 g% h. R! u) u, ]while [k <[trade-record-one-len] of myself]# d/ U# F- `% V7 M8 C
[# h+ c# V9 A1 F3 Z7 j
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) + E5 U+ L) S1 a& K
set k (k + 1). m8 z0 o# K# s- V3 H! y6 b- Z
]
8 d% q$ I' D4 fset [local-reputation] of myself (local)6 S1 Y& R6 v6 _8 y7 y. |# G
end
& ?% M  U7 c! K7 I4 H% |
! V. V4 z  u( t% K! [6 _0 Lto update-neighbor-total" m4 Z. A0 _0 P1 f: ~
! l2 d. @0 t1 m. K. _
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 p4 N- Y3 W) {" @- D; [7 L6 l

+ b3 x- ]0 s2 Z1 L& ]5 zend
3 Z0 C4 i& E2 y6 b+ l4 h" {: S, o4 Y; q! A) y" b9 N$ G
to update-credibility-ijl 3 Q0 G+ d% q* Y1 w" p1 [
- d" Y) M0 d4 x" ?7 [) U
;;
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。6 g* B6 N3 Q0 T9 s
let l 0
5 r2 J- Q  c* O$ i* N" lwhile[ l < people ]
2 g" a4 w. i7 x& ~3 V, x7 B;;
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
( C2 Q5 H+ g' S; V) O- y[
) Y& J# [1 J- G. r* L( x2 P8 qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( g, }& @" ?( B- q7 p2 B& ^) s. Nif (trade-record-one-j-l-len > 3)
- D6 A6 R6 w) b! s) |[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
* _* m3 F9 `5 {% Y$ Ylet i 3; r  d$ l* q- C* |' G
let sum-time 0
3 F" n7 a; F  I: _- pwhile[i < trade-record-one-len]3 P0 W4 m9 S5 J6 m# d
[
. x2 q% G6 i8 S" L4 Oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; A- m1 e: x5 l% u6 {set i" n/ ?6 X0 s& }/ b$ k3 a6 ^* q
( i + 1)
, L& z- b7 V' l9 ]: {9 i" u
]
3 y; S6 \9 E+ @1 olet credibility-i-j-l 0* d& ]# @' G" u( ~3 m# y. C6 j/ M7 p
;;i
评价(jjl的评价)# h+ g5 S5 N$ P9 H, Y" P; N# _
let j 3
( c1 p$ X# L- C/ klet k 4
" n# I- Q9 J1 K, U/ m3 a- P: ?while[j < trade-record-one-len]
8 {6 J7 E( ?9 f9 r[
" y8 C$ ?- z" \. K& ?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
4 o* P* d8 I( s( |1 `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)! e  \- y9 z% ^0 g8 k
set j. G- U- b* }: @$ u9 [% N
( j + 1)

8 W: N$ i7 t! {0 O]
& p& {' O+ s9 e7 {; \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 ))1 l, k) }( |# p& V6 d% a6 ^& \
0 b: ]* t  T4 [$ Q8 a8 w
/ }9 }' U% j3 I4 T, y/ B
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
1 q! }' I5 f  u' i;;
及时更新il的评价质量的评价" ^! i. [7 b" m( g1 A3 c8 D, c+ h
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% v" z3 H9 j  X
set l (l + 1)  u$ T5 z; e/ m( J
]
  s7 Z/ z8 i& F3 rend: w+ p9 M) {/ ]3 s9 [' p
$ @) Z5 e+ r$ O5 b9 z6 s5 r0 E  w8 u
to update-credibility-list
6 Y" W7 v( S6 C" c' y" H2 _  slet i 0
  W& f6 t! P( vwhile[i < people]/ E. f% S/ P/ {" l7 X, ~4 [; P
[
/ c/ B+ r; ^2 {- Vlet j 0
) l! f! v1 D- Y) T% s( Q* Klet note 02 `% G2 [5 F" g2 B. s4 M; V# E, Q
let k 0
/ F/ F( l3 l0 e4 T# E, R( T9 b2 g;;
计作出过评价的邻居节点的数目% ]& j3 C  _5 M
while[j < people]
3 |9 N  o' C  V% c2 M- t$ z) f[4 E1 k' K! K, O- L
if (item j( [credibility] of turtle (i + 1)) != -1)
5 O: k; o: s$ \;;
判断是否给本turtle的评价质量做出过评价的节点" Q3 O5 `6 ^" L: {' }/ j
[set note (note + item j ([credibility]of turtle (i + 1)))7 |! A7 e1 ?4 d: n
;;*(exp (-(people - 2)))/(people - 2))]
+ v5 ~! \0 H% F  \9 w* d5 o
set k (k + 1)
/ e, V* e6 f& K]
# R7 L' R  ]% O9 M# bset j (j + 1)4 L* F- z4 G* o6 U! _& W. _
]- {  U- K/ c6 M4 `6 y$ w
set note (note *(exp (- (1 / k)))/ k)
0 D' E+ e) m9 C* Q: ]9 Hset credibility-list (replace-item i credibility-list note)
; m1 h- u$ @( [7 `4 [, `set i (i + 1)7 T5 X# o( D( b0 T+ E. C% q8 P
]
6 W% \( z: H0 [; h, U7 T1 Q) Oend7 I: v: j, }! e$ I
4 D, |' X# c+ X+ D' S9 _3 U8 n
to update-global-reputation-list
5 Z1 |- z/ a# j! q1 K4 Nlet j 0
9 p) u1 I. D- [while[j < people]
' @% L% Q9 I; a$ r7 r[
- a4 F9 T* Y2 N3 B+ Plet new 0
/ x# e3 ^0 @5 C  |5 w" h8 R6 b;;
暂存新的一个全局声誉, g7 R8 |* T$ r2 w
let i 0+ _2 W1 q7 E2 t0 m
let sum-money 01 x# M& l0 f9 i- ?
let credibility-money 0# |- Y. E  S# s0 I" r/ l6 s( [
while [i < people]; a6 M2 G5 Z% @
[' f' U8 F# Q; ?" s
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' K, S4 W: Q) s/ Z6 |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! T( N: G: v: D4 Vset i (i + 1)7 m: |" v% o% J% V: m
]5 o' V4 `+ x$ F* x2 K$ ]+ |
let k 0
7 y4 ?: G7 e/ [# Q' X5 olet new1 00 }, n8 ]& Z6 T. u4 L' i
while [k < people]
8 q' R1 z6 ^7 G" x9 Y6 e- R[
2 N* I7 l* s! E7 |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)
7 a* k7 l/ f" }  o* G, h+ Oset k (k + 1)
5 Z( o+ U7 z% r0 F1 E2 L8 h: ]7 \+ w]. j. i1 o+ l, O2 J" H
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ P, j- }2 S  H! ^; cset global-reputation-list (replace-item j global-reputation-list new)
) P5 Y1 q/ v7 F- b8 Rset j (j + 1)1 k, a1 R2 c- W8 x3 g
]3 R& t/ ?! E# S, {' J4 M
end
. ]: W# `- O7 R6 Z
9 r" R8 A* d+ q9 b. p' R; [( l5 L  F# z4 F

% }$ Q/ L. N: f, k* H  E& mto get-color) i& }1 e1 H3 e+ U* L
: }! L# i2 F$ X9 K0 i
set color blue

7 W  ]: h; V% f! J9 @end' W( u& B* `$ T* k/ v
- Q) U* \* S; `2 G
to poll-class
' ], ?( c! G) E: b* H2 p- Gend* h# n/ U, `1 i+ D
7 V- ^' R$ f2 [1 s; V* ~
to setup-plot1
9 z! \4 w9 ^* S) L# C- Y
/ r4 n+ k. t6 W. d8 m6 k& Q5 xset-current-plot "Trends-of-Local-reputation"

, u4 y. [2 a5 ^: I+ y3 a8 ?
6 f7 C. [/ w1 m3 Aset-plot-x-range 0 xmax
% ~4 e" ?1 _/ q# ^1 L! ?+ k
4 H7 }% H8 O  t! S( J' i1 t
set-plot-y-range 0.0 ymax
: m- _2 L. m4 L. ^. c
end
1 ?/ P& t" N0 U7 D) J3 a  O7 T3 C4 X% Q! z/ _& K4 ^! z& D  V+ z" a) b
to setup-plot2
, q; D5 k" a: D; Q  O9 ?6 X# G3 |; ]0 P7 M" P0 H
set-current-plot "Trends-of-global-reputation"
6 h' M$ {5 u+ q% P) i7 Y
9 \% e; Y5 ~/ x! w! Y
set-plot-x-range 0 xmax

$ I, p+ n- o9 L* R
  n# x2 T5 r( P+ q# ^set-plot-y-range 0.0 ymax

7 R; p" Q  k6 }  Gend; X$ L! t. T- s9 P8 g, O8 E! n
0 t/ X6 q+ _# w, D/ H" N3 T7 `
to setup-plot36 b! q3 j2 h7 Y) I0 r2 A
3 `/ c( _6 B5 N3 l2 V$ X
set-current-plot "Trends-of-credibility"

5 u2 _( |5 w6 |% C( y4 V4 j, X6 m! N- R) A
set-plot-x-range 0 xmax

& q, l$ [' ^3 c; H  D, \; y9 K8 R6 [+ w6 U! v
set-plot-y-range 0.0 ymax
4 a, v% i$ M- |
end0 m% f7 @# t, q0 H
9 t4 d8 K  e/ y2 z
to do-plots  S' a  S; d5 Q8 w4 V1 y
set-current-plot "Trends-of-Local-reputation": c$ l  V* a- J
set-current-plot-pen "Honest service"+ _' y% l( X# z
end
/ j, |& f6 \. s$ `9 a! l, {; ~" E% V; G) X% K
[ 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.
& w+ k* c6 p9 `, T, F, Y
4 }  _8 n9 T. v( P" X! w# b& Y' m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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