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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:
" N+ H) [+ M; C. ito do-business
; |+ ]$ o7 C1 z7 O8 G0 S9 y rt random 360
1 i' E: Z' O) _7 V fd 1
3 }' k0 ~" F+ I6 K- R2 k3 q ifelse(other turtles-here != nobody)[  y4 W1 L; M. Z5 }6 z" r
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
4 P' J6 D, ^6 M: h3 g! P3 Y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 i4 c. h8 h6 ^* `; E. ]  o: U5 M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& U7 S1 P: H+ v- k   set [trade-record-one-len] of self length [trade-record-one] of self
/ M& `8 `# T) L5 _! t4 p2 P   set trade-record-current( list (timer) (random money-upper-limit))9 t, N3 f, T+ S! p' Z

  A0 F: j9 H/ u  P+ L) g" f问题的提示如下:
* A( \. S/ @# Y! i. o
( S" @( a/ _% f( V4 C* R4 N* kerror while turtle 50 running OF in procedure DO-BUSINESS0 x: C! {# [! {$ W, p0 H6 p1 |7 c8 e
  called by procedure GO
" p! Y9 v' q& ~, x! ZOF expected input to be a turtle agentset or turtle but got NOBODY instead.( A+ f( J" S9 m8 V& z! d) T
(halted running of go)
0 {) b- E: ?+ b' e" d* W$ ^, z+ L9 Z/ ^
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~~
$ q+ a  P& a$ O1 L7 g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) u/ @/ y9 S$ q# |( ^
globals[
$ s& y' q6 U; J% hxmax4 [( Z3 n  g' j+ @
ymax
. B# Z/ \/ j0 N) O3 o0 jglobal-reputation-list0 D9 m  `0 P) O! j  H
3 m0 q. y1 G4 O% Q/ A7 Z
;;
每一个turtle的全局声誉都存在此LIST# M( r* Y6 d! y  e: J
credibility-list
5 ?! c9 G0 H0 x  ~$ e+ g;;
每一个turtle的评价可信度
* F: e- Q: h2 c) v6 X2 Ehonest-service
3 K9 f  C" k! kunhonest-service% M! X+ j- o) x
oscillation4 H% l' j/ j. L! t; R
rand-dynamic
$ |( s; Q& E5 m6 \' i4 X2 V]
3 o' _( {, g& ^
( ^  P; U4 [% M& ?; C; e7 d3 \turtles-own[  N- p* c% o8 t1 r
trade-record-all) o0 q) y9 F1 P! P
;;a list of lists,
trade-record-one组成
' T% b2 T+ D, ?trade-record-one' B6 r3 w/ s: c: L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: D3 [2 h: x0 a5 u0 ?

2 J' R9 K9 }. F! X, D+ R5 B;;[
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]]$ f4 f+ }. v" M
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]3 R- |$ q6 g% i  _6 t- U. l" C
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
6 m- j, \) @' \; Vneighbor-total# {) p. b5 c: A) \6 {- ]
;;
记录该turtle的邻居节点的数目
' g7 n9 u/ M& C% r+ _trade-time
2 o. r+ D" ?) K+ w7 h' z9 R, t;;
当前发生交易的turtle的交易时间
" g, }1 \8 e* [9 @- f# happraise-give
  l, G7 N" \! E- }- H- F8 x;;
当前发生交易时给出的评价
  U3 ~  i& W7 `- oappraise-receive# Z8 h. L+ A1 `5 q. N0 h) ?! z
;;
当前发生交易时收到的评价
% s1 @$ q, u' T* M) e7 sappraise-time
3 o  ^8 l- w- @;;
当前发生交易时的评价时间
% ~8 c% R5 B# y& p1 ^$ Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: c1 L/ I, p9 X! u/ d. q$ T  wtrade-times-total
1 N, e8 Q1 o1 x" l: X6 };;
与当前turtle的交易总次数
) o$ E. h3 |1 mtrade-money-total
0 ], S2 A2 }( a% C- l) w* P;;
与当前turtle的交易总金额; b+ Z9 }& U( C1 M6 R
local-reputation! ~" e6 b; k. @: ?
global-reputation: e; l- c# I/ f! @2 @- p
credibility, Y* o2 ?5 T; a
;;
评价可信度,每次交易后都需要更新2 ~8 l" b& \) |3 b) Q
credibility-all4 e7 w+ k( I: x0 I' w* v
;;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$ e6 i! a; E: `$ G
% H$ E8 F4 o( `) X- a+ m
;;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/ S! R- X; s) e4 \2 [
credibility-one1 x; g1 r" J" L
;;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; Y1 n" d* b) X" O+ _8 H
global-proportion
8 M. D. W9 j. I2 @) Xcustomer# Z9 w" W1 o) H, {9 x2 H# C
customer-no0 x1 M* |' Y; z. t$ m9 m/ J% z) k* _
trust-ok
, ~" W: ~0 l! l4 b  w! t' Ktrade-record-one-len;;trade-record-one的长度, Y( f4 [! U8 {( m5 n, n2 O! E- P
]$ {. D% \5 f8 s
8 f+ e  W2 ~! Y5 a
;;setup procedure
- A, s. Q9 j( G3 o6 X& A
3 @1 X% V8 }7 d! L2 g- zto setup) f6 B. U  f& f! R, u
/ F) z1 s! F, a; V1 [# f* R
ca

: m' L1 n* e# i  [; N# _, W, x' r3 s
initialize-settings

  C) t/ N, D7 S% u0 c8 b
/ N4 F% H. x! t3 T  _/ Lcrt people [setup-turtles]

4 G3 r6 l! ^. u3 e  W2 C( |) {% X- W
reset-timer

  |( c6 Y) e% l% t# I) v
0 h& e7 H' Z8 N. ?  r9 X4 Mpoll-class
- y/ @) k0 w8 O) V
. @, |) P6 M# v2 O
setup-plots
; F; \! m' f1 K6 T# `* o8 p

0 ~- I: p0 h0 b6 R" j; g5 rdo-plots

+ z) p- J. }$ H; q/ u4 m7 A8 f2 rend- f( V6 `+ _& H3 F% R! |

! U7 B% M; Z; V, `$ W! i9 jto initialize-settings8 d7 @0 H" d' Q. x  w' I/ J
6 J# S9 J; v8 O8 e) u  f3 ^" b
set global-reputation-list []

4 R: ]$ _' A2 i+ r9 l+ t+ Y8 n% z
9 {' Z- k5 ?$ p  mset credibility-list n-values people [0.5]

( w' c; K2 b( V
& ]$ G" V9 f' t8 mset honest-service 0
# P, _9 I: p$ O$ t! B) M' T7 R

7 ~4 {0 `/ f$ ]- i! m+ D. Iset unhonest-service 0
% e+ I* B' t- V2 r/ H4 u6 f% {

, n+ `# R0 p$ `5 Pset oscillation 0
( V& @7 G8 l: I: Y9 q4 i. k
" M, f% i& E1 K7 j
set rand-dynamic 0

4 C" {* W% @0 nend
+ z, q/ W) X! v
0 ~* l1 D, U6 ~0 M3 i" |. l' `to setup-turtles - \. ~5 F( ]* i! I; k. y$ P, |; Y4 L
set shape "person"; z+ K& }, ?, i0 }
setxy random-xcor random-ycor9 \8 ]5 Q0 J5 n, A
set trade-record-one []
: d  P1 _2 {* X# c$ C9 e/ V

7 Y5 F! z5 k9 D, {. q# _  sset trade-record-all n-values people [(list (? + 1) 0 0)] + S( i5 r  ?, @( H  ~
7 O3 u' x/ V; H1 K
set trade-record-current []3 X; g) q. k& ^% l
set credibility-receive []
% F% [* v( K0 ~4 j: ]set local-reputation 0.55 c- i6 e- U+ b# ~5 c5 R& J
set neighbor-total 06 ^1 b) |' T0 \0 E. E) g; [& w6 n  r& A
set trade-times-total 0
6 i. `  |# M* d1 _, c$ Aset trade-money-total 0
; V6 s: y  _! z4 V, Wset customer nobody5 |1 |& V( S; U' M
set credibility-all n-values people [creat-credibility]" t2 q2 N4 t' t& e* W
set credibility n-values people [-1]9 r$ Y2 w" i% m# T# {
get-color
$ j; [. t" {$ d- [; ~9 ]

" A& B- e- C' @% [! iend! r6 ^3 Y  p0 d8 l/ ~  f; [4 l

) I" {/ y1 T- k7 w3 v9 F# ^$ bto-report creat-credibility
- T" X$ v( c1 b! A# A$ ?/ oreport n-values people [0.5]
9 a& Q1 z( V; Pend
% T4 L) Q' B3 ^2 g5 n8 G# W, _6 e1 Z( g. X) K  l
to setup-plots
0 _  P% B# V9 [! `  C/ B4 [1 L8 G( C, i  H9 J
set xmax 30
1 c) w( c8 y- Y5 q) L, i! x: l. q

2 h; S( l% ~+ T& e9 m8 ?set ymax 1.0

) W0 O4 ^- Y& n; c. p7 {7 W4 ?2 \! Q- y
clear-all-plots
" P7 Z* T3 k4 m* Z+ J4 N$ J
* f' p: `1 W' l9 d9 @: U
setup-plot1

. ^/ ?( o  p& v% c% \4 H' {  O3 w9 R% {1 t" U* k- x+ K; f
setup-plot2
' o& Z+ I, w$ i2 s. ^

; \" }8 E# y; ~  s0 Dsetup-plot3
! @; e: b4 @% j5 X
end+ q6 d/ H- e+ d

! @- U; t* E/ l+ t;;run time procedures
' X# {' }; a! S8 K2 m. R$ ]+ H
  ~2 s- G! h  O$ z7 L( @% bto go5 Y# Y5 a# F0 }3 M! L2 k3 v0 x

' Z8 s: K. V$ Mask turtles [do-business]

" r% q# I+ V4 Y0 J. Hend
( V1 _2 T3 e* M
3 J. l. ^) u$ _to do-business
$ T1 B2 y" s' l9 }/ D) F! n

! i6 o$ [, s5 W( ~2 V5 ?1 H
. V: w; s; Z/ _) R+ y: I" S- Xrt random 360

$ o+ V  t3 N1 G- ?7 _8 S! I# H3 `+ H3 r* U. x: q
fd 1

( M3 k: h4 r0 q/ p& G' {1 f. S% K& p' B6 x3 U5 a* C
ifelse(other turtles-here != nobody)[
1 }/ @, G+ G: [, K- U; j" W4 E+ j  L, k

; H& F& V' H3 b) w% ?. v# |! tset customer one-of other turtles-here

+ M9 ^4 L9 \2 D' `/ D
( C  C3 S) h: d$ U9 I8 s" j" q;; set [customer] of customer myself
# i3 r- x, ~1 D2 J0 E

/ T! {- r# m. Y% ?- t: Rset [trade-record-one] of self item (([who] of customer) - 1)$ P/ [) G* b! e
[trade-record-all]of self
& H' D6 ]+ I5 u  h8 ]7 f0 Q( ^6 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ x9 m* i  h: a/ b0 _2 G' J6 ~

7 `' {5 Q) F% b& A# G% h! ~set [trade-record-one] of customer item (([who] of self) - 1)
+ O5 @2 p( x3 ]- [: J, u[trade-record-all]of customer

9 W" A5 D) o! k
3 f! H8 d* ]! J7 L# ?set [trade-record-one-len] of self length [trade-record-one] of self

9 j" T8 U5 {5 _7 _( R9 z! |. W, F9 S/ n" |6 U5 Y/ K4 o' y& s" Z
set trade-record-current( list (timer) (random money-upper-limit))
8 ]3 t. U9 h  \  e+ ^; d4 {/ u
0 K0 [  q5 |+ i
ask self [do-trust]
: H( H% w2 E& U  p) _;;
先求ij的信任度
, {0 _& e- J5 {! h/ U1 N
0 f. }+ d9 W( Qif ([trust-ok] of self)0 |+ n( D# r: V/ J7 L" `
;;
根据ij的信任度来决定是否与j进行交易[) F9 F' V- {' @/ U; l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; X7 T) h, @1 h+ F( J, C% k0 }0 p
[

5 X' e  m# _: L% ~" O( [! n0 u
2 o& ?( _5 K) ?7 |$ I% e% hdo-trade
* m6 u% D3 {' S) _
+ S# k5 K( P* K5 [5 d
update-credibility-ijl

$ D9 S* |( d/ _  ^) a+ X- V4 F/ {9 q8 x2 g$ J" D5 O
update-credibility-list
0 k4 \1 {( s% u+ @8 f, g

1 ^" T) k: Z1 S
% Y4 j) ~+ P* D- i( \% Fupdate-global-reputation-list
0 I; }/ ]/ Z4 I0 N' {
1 Y3 a( I/ `" }  s' N
poll-class

6 P( S. g4 \) q; A$ c+ I& y2 K' z$ C( o! `# q; E  \4 u
get-color

9 [; n5 ]6 A* T, M, J7 ?* H  W8 N5 Q  [- |/ v5 \6 M& v& k
]]+ j, l$ `5 s1 [5 Z
/ S$ V- A+ j: D5 [: z" B5 a
;;
如果所得的信任度满足条件,则进行交易3 ]( o5 o0 m; [1 i# u
- a1 x: o+ `1 `, f
[

8 }2 q2 U2 r* v. i+ B: }4 e$ o
) ]. _6 B5 n# @: h* e7 u* Brt random 360

1 d4 F# K" y! h3 L- j: E" k0 O
1 e! Y5 r& B6 W6 Kfd 1
) V" r) {" y' d8 k1 a( Z. }* O, n$ ]
/ e1 @( _( I" v- H$ n
]

0 U0 Z; E8 j6 B' C1 ?
& N1 O4 a, r0 y0 ~4 d& O8 D. t, Y/ g, Oend

. I8 g, J/ `, d& a, Y4 H* _# n9 ]6 }1 V) y' V, |/ ^
to do-trust
( f# {4 K& c; q. x$ @set trust-ok False
0 P! C" P' G+ j% k9 M/ B7 ]$ W; V: e- c/ u0 j& e" L

' }# c+ s) v9 r' q: n/ u+ }2 w) @let max-trade-times 0
* f; M& Y$ m4 O3 @. M$ e' fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 ]- Z; o$ V3 s1 O! C# f0 Y7 o
let max-trade-money 04 |/ B8 s; I2 k! a& w$ p( z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]$ }, l+ M" V' \, i" z4 X
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 i5 e* d% H& o4 T# V
% a5 q- k5 _2 \4 T6 r. t7 r1 i! H0 B

4 r0 i; e* ^# B8 K4 Y5 j8 hget-global-proportion
" w1 }; u! g5 @3 D; V/ Y; m" tlet trust-value: W  G! j4 g2 {2 @5 s* x
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)
0 u+ n; _& B# _# u7 A
if(trust-value > trade-trust-value)
' t/ g3 p% ?' P! g( F2 O3 I& n) P[set trust-ok true]
9 M$ a% p0 O% B$ k( j+ vend- K2 Q- `" {- Q: T, G, I
* Q7 k+ y& q8 G. o
to get-global-proportion
6 {, c, C% i3 i' t* @/ iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 w! p% V0 V0 Y3 h$ {% ~3 M
[set global-proportion 0]
( B3 c8 J% I- z& U. y( n, h1 H[let i 07 S& j1 E0 i, |" K+ h& r
let sum-money 04 }- x8 @" C4 J& s) o* T6 e9 g
while[ i < people]. s. g/ [4 K+ \
[
  A) r0 g5 d) W( gif( length (item i
* v" Z, M' |) g) l# W- `[trade-record-all] of customer) > 3 )
5 V( @4 y0 S$ `3 ]8 u( F
[
) A8 F4 P% n! ~0 @$ S$ f$ fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ g3 |0 M9 K, M
]
5 V4 E/ I) B7 w2 Q! z; ?: d# Q]
  h, j% B# F, W" g3 \( j2 T; J, Klet j 07 e- |0 b, X. |! O- L( x5 g
let note 0
# m0 t/ V, N: n5 X7 n7 dwhile[ j < people]
, }5 N$ G" y% ?3 N: g; o+ `[
! i, e$ f8 j) j) @+ m+ m, ~0 _if( length (item i
4 f$ w, }7 z( w$ R[trade-record-all] of customer) > 3 )
$ [! \" J& i( b9 I% W- N
[8 c+ Z4 H% s; [( O0 ]4 D2 G
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ A, f  j) ?9 I- @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ i7 w! `- F) p. \$ i$ {- d3 |) O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
9 {5 r& S( o/ K7 N8 q]
& y; S; V/ p, E% m+ P]% c6 t1 B: U+ F2 ^- }5 U8 g) ]
set global-proportion note$ ^% C$ {: M! c  R: ^8 r& f
]
6 M5 O4 M& r5 C. zend
1 }$ L# L( l4 Y, p1 ?- q1 e2 R
$ h4 F9 T  j4 k7 k( O1 J7 G5 sto do-trade
* N8 D6 U$ m4 \# i' H;;
这个过程实际上是给双方作出评价的过程3 S5 k# Y4 M. T
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, q! k0 Y- P; ~; @% D* Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' D3 X( a" z" a1 i5 D/ I
set trade-record-current lput(timer) trade-record-current$ n6 i1 `7 f: u$ g
;;
评价时间. _1 ?8 h8 w# @' C! [8 E. [, `: S
ask myself [
2 }: Q$ r* T2 D' f+ [, M0 supdate-local-reputation
0 I! }# A6 L( K( ^2 C; r. i. tset trade-record-current lput([local-reputation] of myself) trade-record-current, k0 @8 r4 \1 U+ ~. g9 [( ~0 v
]# u! _" ~- D5 i/ V' j1 S  m7 P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! n; ^/ M8 G( {% A3 i  w! F9 S
;;
将此次交易的记录加入到trade-record-one) |0 i3 Y5 O6 E  t7 h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# K5 ~  r) n) C9 T) S/ ^0 O
let note (item 2 trade-record-current )
" G2 ~2 R- b2 _0 t% Yset trade-record-current
& \9 }7 b3 s' O& P3 T  L(replace-item 2 trade-record-current (item 3 trade-record-current))

$ S6 W, d4 W- P4 W8 iset trade-record-current2 Y# ^+ V% C3 i1 _# i
(replace-item 3 trade-record-current note)
; n+ r8 u7 \/ _) |. a6 Q, T( a% g$ |: j

5 y! I4 X0 _) Z7 Nask customer [
# m) ]1 ]) ]( y, y: z: L) j& S2 tupdate-local-reputation
  y- d4 }' B$ m* a% R; p" Sset trade-record-current
" N) }/ C0 F4 ]9 P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( C$ s" V5 M9 S' W: w; z$ w4 B
]
# _2 C& X1 f/ E. v, G7 ?. l( w4 o) H- F

  |1 u2 O) F$ Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 u$ r( m. V) M4 X. |
- C- X5 f' Q/ d8 p2 j9 m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): A- L8 P4 ]2 E# s3 |" z5 }9 f
;;
将此次交易的记录加入到customertrade-record-all) \' Z$ ~& y, k% X& B* @: V
end3 m3 t' L7 }- |2 x
) I6 ?0 I% k4 m3 B4 z
to update-local-reputation7 @1 f9 h6 @  _* B: |
set [trade-record-one-len] of myself length [trade-record-one] of myself
" j( f1 O( n) b' P4 q
  N9 b% o1 j2 ?6 O" |% o
# i$ {. Z( O7 n$ x;;if [trade-record-one-len] of myself > 3

) [' x( |/ k7 t, S/ Z8 Hupdate-neighbor-total6 l$ o+ \( g* {; ]
;;
更新邻居节点的数目,在此进行
1 L0 B- Q4 D$ N: p6 f* Llet i 31 A- h. g/ c" g# A) L' ~
let sum-time 09 n# L& v  W- d7 S1 P/ U: c5 A
while[i < [trade-record-one-len] of myself]
* n  Z1 ~: {5 ]! U  R" Q[
7 p/ f1 ~$ ^0 f) gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 @# C! u2 ]2 f+ b7 aset i
6 v4 E/ P9 N% M" y  b! B6 w7 D( i + 1)
/ s9 x6 I+ O3 l# X
]: N. D5 S! k+ s5 H, W4 g* ?
let j 3- l% ~: k- _8 G! {/ w8 @
let sum-money 0
4 F4 p$ d+ J' @6 Y  R, i% \8 S* {while[j < [trade-record-one-len] of myself]  I2 _) M- ^3 d+ n- {+ i5 G
[
8 d6 Z: H  o& P/ ^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)
& F. X. V# a8 b. ~# O( [6 Wset j# R3 a, Y) z* I. F1 P
( j + 1)
/ E; S& a% q  C3 ]% n3 x
]( l6 n" ^' d5 |
let k 3
) X) S9 x/ t4 i3 ylet power 0
; G2 a, t5 V, Q, b+ Olet local 09 w  J( \( [6 g
while [k <[trade-record-one-len] of myself]
/ x! h( }! ]5 [6 R. c) R5 S[+ d/ c( c8 C+ z5 X. X
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)
. {, c, c- d  T! V4 Yset k (k + 1)
0 ~/ I! O, M' S/ S+ B5 O' e]6 H4 H/ w/ }3 m, s
set [local-reputation] of myself (local)' p, r' j9 y. V- H: p; ?+ Z
end( c- f) @+ ]& b. A" }) l3 X3 b3 {

* R! E, @4 z1 U' \: Uto update-neighbor-total
6 V. U9 w% B, D: D- |1 H4 \! X& C- [
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- y  D9 g, X/ z
' N+ h# L0 |6 j: @
: ]. h4 G" Y% s
end
4 L# P' w( v- i& E, S" l$ z" Y0 Q1 B- N. [5 U
to update-credibility-ijl
4 l' u0 y, t9 ]; P. q- M$ y: Z# G* N" A1 ~3 X" R- Z
;;
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。+ Y3 H5 J4 t, s
let l 0
' Y& G2 \3 k- J) D3 Mwhile[ l < people ]5 O1 {, L; M: g* f) L; z
;;
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
2 G5 T( g  X+ h9 z. f' z# R[2 z" X% T- U7 W, M5 i5 ]
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 ]4 \8 E4 r' m1 j. Z6 s# J
if (trade-record-one-j-l-len > 3), B. K# [1 }: ?2 C& _7 R1 I3 I( z
[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: ~! _! U, z1 X5 ^2 Y; _
let i 3
+ I! k( L: p$ C' G3 X& rlet sum-time 0
5 _5 O. ~6 d& p+ [' x" T  v7 }while[i < trade-record-one-len]) o- }  C9 M* Y+ G
[# u, z- A4 {' S2 V" B- o: Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 q4 @5 F* P5 p6 M: l
set i8 M0 ?7 I: u* p  s5 D2 H
( i + 1)

+ }: P9 O' r0 r]
2 ~8 p4 n( `" T& j9 llet credibility-i-j-l 08 B! F+ m% t4 D9 ~
;;i
评价(jjl的评价)
: H4 p2 e( |2 C; S5 i8 W) r' g8 Z" Qlet j 38 ^, X( J5 L' a: \0 {* v. f
let k 4* F5 d' a) t1 y7 y  i( T5 s3 n
while[j < trade-record-one-len]; j8 Z% ^+ x8 |
[
4 a! q( d* r; P3 e; Vwhile [((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$ g% P1 Z( y2 m7 ^2 I
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)$ w( S- D. s2 _" f4 B
set j  D' }7 Y! j2 p8 U# a
( j + 1)
9 t7 L( H. M7 y% P* e
]
9 p7 g8 v; @' S4 R5 Jset [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 ))
/ K% h0 s6 x# X- K4 S% [, z  m( z: L+ K+ |, @' h0 p, h3 |( t

- {- O( f9 K$ k( Z: Z' D# tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& u. q+ X* p/ D" N; A* J;;
及时更新il的评价质量的评价
6 u. `" S6 }# w4 t. \+ ^set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' U# Z" `! C0 A8 I/ c% C2 B, Y+ B8 e
set l (l + 1)
) j& D) Y& S6 B$ @6 p]
$ }- M  P, q+ _end
6 [- X# t% C3 t4 o8 d7 [& V
7 e7 N, T% y, v& {, m% Qto update-credibility-list0 y3 D/ K, E9 b0 U( }
let i 0
# k5 D) f, l  j3 l  P9 L+ x; Vwhile[i < people]3 R$ x6 v! `9 l2 b4 ?/ ]9 {
[: r- G+ E" S5 b( ^" n5 G2 d  q
let j 0# Q' y" l4 j& c  A* F! M
let note 0$ w& U! ]- U8 ]$ G! `/ y4 @& K! `
let k 0% k' N4 k/ h+ e9 P, `: U5 T; O# R& Q7 J
;;
计作出过评价的邻居节点的数目0 j( F3 {* B: F9 {! G2 i: C
while[j < people]
% H6 {& z# W% y[
3 u: }5 V1 _8 `" W$ ?if (item j( [credibility] of turtle (i + 1)) != -1)
# C0 r  @' L& ]9 M1 ~; Q;;
判断是否给本turtle的评价质量做出过评价的节点
& K" e) I8 d) K5 p/ N[set note (note + item j ([credibility]of turtle (i + 1)))
2 ]: }8 ]  h) X1 v( d;;*(exp (-(people - 2)))/(people - 2))]

1 P6 u4 ~3 g) o, J; E( Zset k (k + 1)
. p: I7 w9 f8 l. H0 O]
# R8 I0 l) S9 H" `set j (j + 1), V+ N# L' i. E9 D  M1 ]) S. w
]
/ r; S7 O$ N- n" Aset note (note *(exp (- (1 / k)))/ k)
  D; W" b/ Q* R0 p" ^set credibility-list (replace-item i credibility-list note)- I0 F1 ~( D$ |* B9 W
set i (i + 1)# }  _; c, E) J
]7 R& q* {' [' u! Y! G$ m4 P
end
0 w: B: b" \2 h0 j" o: m+ v+ [6 V
to update-global-reputation-list# }$ a0 s  A' \$ W
let j 08 U: D7 r- E8 w  n* R5 ]3 u6 m
while[j < people]
1 x- g! u/ S$ P9 p! a/ J8 G[
! v. m$ l' n" L- N" J( nlet new 0, h) M- j1 h) I$ u9 a, @- L2 q
;;
暂存新的一个全局声誉
( v- C. a5 T5 z2 Ilet i 0
) @& X. v/ e- P# C9 J( Flet sum-money 0: J& b" y0 Z+ {+ w
let credibility-money 0
7 a, L) i" u% W& o7 z' nwhile [i < people]
% J! m+ O! H8 i5 y& ^$ O[
/ n1 ^' J4 n! S+ V& iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# t9 {5 a1 J# v% ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); y" ^3 a" O. v+ u) {# E
set i (i + 1)
4 y( m# _0 q: N8 A( f]) H/ s) T2 b0 x; e9 T7 J6 I
let k 02 r! M' P& Y- ?1 k
let new1 0
( I- u2 D$ e& T  Awhile [k < people]
) E) P8 u4 T: @  N[
! P, `' H& }! G' ~. n7 x4 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)- c. S  W0 K7 h* O2 C$ S
set k (k + 1)
( B. S( F# G/ h]
3 [1 B1 U% w! b) k5 c+ N5 R3 q- ^1 yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) h- C1 `; ?3 g. s$ u
set global-reputation-list (replace-item j global-reputation-list new)
7 l3 {" d0 K+ J5 A$ tset j (j + 1)( ^7 }5 f- e8 L; ?6 Z
]& A/ ^* \* z5 L- V0 [1 b' f
end# P5 ?2 B  E8 T$ H% W

2 k0 ]) D. J/ d# A
1 F& q! R3 w$ `7 J7 @
% b0 }9 }* k8 e7 L' A% }6 Fto get-color
) J" ~0 G; c# T( B* n8 R
8 T# b  V) c  M3 j& Uset color blue

+ n  ?4 |) e+ Q) N. p5 D6 Jend
! o& F7 Q& y! D8 `% p' ~
. \, G4 G' ~: O7 c. j4 ~- Z- [* Rto poll-class
3 [5 J: A  b2 D5 P  g2 Z3 W+ s/ P* p3 zend* g0 K( f8 ~" A* y/ ~9 P4 G

( D7 u+ F! T/ b. H. x& S6 M) O# Dto setup-plot1
+ ?5 `- C/ l8 Q5 H! H
: c) L' R' }/ ~4 _6 Fset-current-plot "Trends-of-Local-reputation"

& t" v/ J: ~+ J6 k9 ]" L
1 J3 }0 j0 ]1 Eset-plot-x-range 0 xmax

+ p. f' |8 G- L- n+ y9 Y5 ]. ^. d4 D; R" L3 h
set-plot-y-range 0.0 ymax

7 p. H2 S) z+ T$ L) Pend# N6 R) @" f* d, Y/ ?

  I% X# N( u  J" i# zto setup-plot2
+ Y! @) E; e" ~: @
& L5 p4 a1 i6 i! n0 ?% o, i3 tset-current-plot "Trends-of-global-reputation"

& _- u. @3 U% ]# r0 \7 l. d
" V1 E3 J9 u. D" y- Dset-plot-x-range 0 xmax
9 m) k, W% O" ?0 F
) L0 u( V' J7 Q3 r7 {( L) Y
set-plot-y-range 0.0 ymax

+ O- S2 h, Q' n3 cend7 u; H+ H6 D+ q/ j
5 O2 W6 U! g- U2 f
to setup-plot3
3 i  _9 Q1 K4 u3 V6 u" \
0 P- R' T2 V% x" n7 Pset-current-plot "Trends-of-credibility"
3 {) b0 |2 u) w' N4 P
4 r# @$ e/ N8 K# W2 M
set-plot-x-range 0 xmax
+ P/ w1 J& c$ r5 g/ p- X/ \# c6 b

4 c) x9 n9 ?3 `& r! E; ^% t$ Qset-plot-y-range 0.0 ymax

: o4 D6 r$ m. i' N& jend, {- o( J; y% u/ U/ s8 a

9 s2 V  A7 X; cto do-plots( y1 x1 P$ ]0 I3 R' S( n8 ~  f1 O
set-current-plot "Trends-of-Local-reputation"
8 ]) o8 i" O" a- x& k8 m& z# J( bset-current-plot-pen "Honest service"
# X+ t# F9 f1 X* hend
9 T2 z- f1 w. J9 k, k, g" z) w4 N8 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.
* W- q) m( G1 {" a" q  t
% T$ V& I; l% [2 X! Z2 t5 p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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