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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:% X9 \; e" E' J* E& m& A$ g
to do-business
( S1 c4 w- B2 O3 B- ~* a$ t rt random 360
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ifelse(other turtles-here != nobody)[
8 r) _0 K7 \. R/ i   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.- f( Z/ K$ v+ C: Y/ P$ ~% B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' S, n! a8 R: [5 k* P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% }+ m1 Q5 n" c% D4 N   set [trade-record-one-len] of self length [trade-record-one] of self1 ~; F$ B8 f8 A
   set trade-record-current( list (timer) (random money-upper-limit))
! h1 t/ s# M2 P! H$ F3 C# b& m9 I3 `3 a0 h% [) v# Y6 k
问题的提示如下:% I+ k+ l, I5 j/ ]% d$ j) l
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error while turtle 50 running OF in procedure DO-BUSINESS: ^7 |+ _. d& ?
  called by procedure GO6 J$ E- ^% Y: i( @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  f4 `. b; B) N* V: P3 L9 H8 ^
(halted running of go)
4 I& t; [5 n# P$ Y4 @% Y) h
* L. V' ~+ r3 Q3 }/ t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 @3 }, g" b- V+ `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
7 ?0 C! E$ H/ [9 S$ z# Y5 ]; c, d. A1 }globals[
/ g5 }: `) |7 `& L! Rxmax6 b: C+ v8 p+ P# U0 x
ymax6 k" g4 [( n3 x" C# |; H9 N
global-reputation-list5 M, ?) l* g8 V0 u
. O8 F& }+ z$ H( R( T
;;
每一个turtle的全局声誉都存在此LIST9 P1 F. R3 L9 l
credibility-list: @5 c: G$ N# H5 u
;;
每一个turtle的评价可信度
* u) B! F$ a* K# |honest-service
0 \8 S4 s( o' N1 `; v8 k8 vunhonest-service2 [' I9 R! {, B. y
oscillation) _* t3 E  Y* z+ V3 t: l8 y; x* k
rand-dynamic3 f" D. c# |  @! j5 O6 ]4 f
]
% E; Y& {$ i( g; i! t9 X* c; l6 C2 v" Z( h7 w5 V
turtles-own[
6 g$ z, J! k+ @/ B' Rtrade-record-all- q; J! |9 a; k( _8 ^  b* H4 X
;;a list of lists,
trade-record-one组成; W5 f: R$ f$ Q6 m0 \9 \% [" o
trade-record-one
1 o: s" m9 {5 Q. i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  i, {1 M. N$ A: h' |

  u8 L- [# S( y2 p6 }8 J- V;;[
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]]
, L4 _; K  K# M. |+ p8 ntrade-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]+ V6 ]5 ^. w  L7 l" Y+ v# K
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
9 @/ D. {/ z0 i3 y; T2 pneighbor-total! a# P" [/ l! `3 ^# }( B- o
;;
记录该turtle的邻居节点的数目
) p5 k1 j+ }/ h* @2 \! Atrade-time
' E( r; M5 t( z. ^6 };;
当前发生交易的turtle的交易时间
5 I. u$ q  W' u. g" [0 |% eappraise-give, L9 z5 c) J2 t+ H' l/ q. @
;;
当前发生交易时给出的评价
1 ^: Y- w3 o+ }1 pappraise-receive
" ~% c2 G- a$ q8 l) V;;
当前发生交易时收到的评价' O* I7 K5 z* d) o
appraise-time5 R) B% N. f" J  f8 R) Y( x, v
;;
当前发生交易时的评价时间
9 s4 C& K$ l+ F7 x6 n9 z7 j  Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" s9 M1 `/ q( n! x6 U% U2 ?  Ytrade-times-total0 w8 k1 m* ]: g5 M
;;
与当前turtle的交易总次数
' \! Q/ L/ \6 x: d3 e  L0 [" Otrade-money-total4 C% _) Q7 \. O
;;
与当前turtle的交易总金额% w* u# k$ f& B) u) r
local-reputation
$ u% d" l6 p  W: hglobal-reputation
- D2 F+ U' a' m' Vcredibility* \2 ~9 [7 \4 }0 m
;;
评价可信度,每次交易后都需要更新
; d+ g& K1 s4 M! d& A# S. Ocredibility-all
$ ^4 Q/ t! s- f;;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+ l/ }! Z. d8 L; e9 Y% ]3 X' Q

! j5 x4 @# B$ x% u$ P, ^% H6 ^;;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0.50 m: I: w( t& z* \
credibility-one) ~/ \/ E+ ^4 u! i' j. t4 Q6 e
;;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people6 f, G% T3 m: A/ a& J
global-proportion
/ Z- [/ K1 P  kcustomer
" z; d! c+ n- U. h  ~customer-no
/ n5 G1 h/ @7 Gtrust-ok1 Y/ b# l) w* G
trade-record-one-len;;trade-record-one的长度" p0 O8 H1 Y( l) R( X" E
]1 V- A, G7 V! N+ X* d7 j. Y$ P

+ }: m' G+ |, M" G) ~;;setup procedure' @2 ]# I: j3 ^( G: O

4 Z0 _/ ]& _# ^( l$ P. z# H. y) uto setup' U  R, m' |7 X& M0 P9 F

$ R# o6 R1 ?, Ica

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6 O) y6 Q% s0 w+ J& W' p) E+ K. p! ginitialize-settings

; o3 |) A6 r1 Y6 p9 `
0 u. h/ v3 d9 j2 M* ?! M$ icrt people [setup-turtles]

( ~; X& L; B$ a2 @
7 H; o/ R. H) j6 areset-timer
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1 i  ]) `0 [3 G8 {  D. ~6 [0 \4 t+ bpoll-class
- X5 R7 x) `6 Q" |
5 l# N) z: X1 }5 I/ Y' L9 a
setup-plots

" `6 B( H+ Y- @: F! u2 @2 v; R. ~9 _- _9 p  f- A7 p$ U
do-plots
7 q( y) `) o- R- F0 q
end. ~; M8 J% V: o

" y$ h5 e) ]8 Q) E. |6 Q! Ito initialize-settings8 N) c3 {- A* N$ @! _4 B2 h. Q
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set global-reputation-list []
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set credibility-list n-values people [0.5]
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set honest-service 0
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4 T+ K$ `2 B( v. t3 Z
set unhonest-service 0
9 `' k# l& d3 u) _3 o& Z

! g& w( _& p% u( I# Nset oscillation 0

4 M9 i# D2 [, z% T" X9 J- b' w2 N' z* R; ^. w' v6 l
set rand-dynamic 0

" V+ Q& H& V8 `- P9 ]* Nend) X: s" S7 t" |! c

0 @& m  |1 w# k) `. K4 ~to setup-turtles
5 m& |1 X% a7 \set shape "person"4 }; A! f. @- n1 o
setxy random-xcor random-ycor* H) q7 }4 H5 n, j$ G& w, m
set trade-record-one []
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set trade-record-all n-values people [(list (? + 1) 0 0)]
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  U1 A+ m" X- J8 S# k: G4 D0 ]
set trade-record-current []- m/ ]3 }6 R0 T( k
set credibility-receive []
7 v2 g0 q9 i- `set local-reputation 0.5$ U! N, X, v" x( ]: F
set neighbor-total 0
$ z3 s; s5 c. B8 f6 ~# ?( g1 ^set trade-times-total 0
: D" Y# a5 O* t" ~' Wset trade-money-total 0$ P7 L- Z& f* b8 j/ ^
set customer nobody
- I0 u1 D7 i9 q2 s' S; O$ Gset credibility-all n-values people [creat-credibility]2 x: b. Y1 T4 J( X! G1 W& @1 v
set credibility n-values people [-1]  v4 G' [; D3 }4 c1 o: Z4 v
get-color
  P5 @. h" V+ U
4 q* y# n8 \7 {3 T- n
end
% R0 @. C! d! Y4 ^
( i/ w8 y" H$ C' x. a( u1 gto-report creat-credibility: Y! ^* p: W2 r+ q
report n-values people [0.5]
* `, L- f/ W5 j3 oend+ F* R8 N, S( B0 u

6 ~. n3 x! z8 d0 m! cto setup-plots
% b" {& E% |' n2 x" @6 s2 @
2 ~/ J! z+ `) P' B4 m1 Yset xmax 30

0 `% o3 {; m* ^3 O( N
1 }/ s3 [7 N6 w# s6 c$ iset ymax 1.0
, E) ?% I2 [5 f1 B' r! D
) o: _: s3 P% @9 D
clear-all-plots
# {- w4 p2 b3 Q$ I

1 q: W& M* l/ Y: Esetup-plot1

2 u/ w7 O' g/ g0 V$ Y
: y$ }+ b' U0 d9 W0 Ssetup-plot2

$ [" F8 ]3 C6 J; u0 A' G4 m) K! @2 r- \$ B1 K" M( H
setup-plot3
/ a! d/ a$ P; h0 H% _% x
end
) R# Y! m- U4 V' e% Z) R8 f9 U2 [# o
9 H0 Y2 z! W: K$ I5 V! w;;run time procedures5 f1 P/ f; ^7 m# e" x/ {+ j  r: m7 ?

0 `9 I" O; z- S( o+ Lto go
: z& Z: Z& _! z" k, G' D/ H1 j0 G+ O! J' n  V4 o
ask turtles [do-business]

* j% ]" Q- @8 o# d; k& o5 iend% K  z* Z/ C9 F# p

- q2 G) y; y' a* J- Y8 D0 e. Nto do-business % \! M; T( \6 J' \

  F1 G0 G1 p7 m. w7 m, q' S$ v! a
+ m- H4 i7 I4 A% i2 jrt random 360
) J: R1 o% A$ e4 G
4 ^* l* Q) s) ?  ?0 g. {5 N
fd 1

; t  R# ?6 P2 ?, b" D( k4 n" U8 f+ ^6 Y# a; z# G
ifelse(other turtles-here != nobody)[
3 R. l( g. K: c/ X9 T+ `
* E0 e/ u/ E# ~3 |& D6 S
set customer one-of other turtles-here
" ?1 u; n5 n% T; X4 G
) ]2 ~+ t" ~+ e+ a* r9 A2 ]& X
;; set [customer] of customer myself

  M5 i1 Z: D) V6 h% M8 b% |, r1 H. a3 {. c) @4 X& R/ s' O  Q
set [trade-record-one] of self item (([who] of customer) - 1)
, `" {. x( \. }+ W. H* P- }[trade-record-all]of self
3 a0 {8 Z8 M  r! l! P  m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 ^. H; y3 E3 m( w* b& ^

+ I# d5 O2 v0 o, A- Gset [trade-record-one] of customer item (([who] of self) - 1)
( ?, \# G, B& Q: [[trade-record-all]of customer

" M* L* S" O- M( d" E" M% Z- G, |7 e, l9 o' A( ]6 F
set [trade-record-one-len] of self length [trade-record-one] of self
  G6 v7 p" ]' m! O( p* o  H

- {8 |( f) s; l3 {( H5 Wset trade-record-current( list (timer) (random money-upper-limit))
4 w% A9 O- v. C: p+ ^. V
2 G. k) L  J$ }
ask self [do-trust]0 [. b/ A6 e8 q6 d3 k% x$ R# n$ J: _# o
;;
先求ij的信任度1 k( |" n/ D4 ?% H
# U' R- Z& o- M
if ([trust-ok] of self)
# s- x; K$ B. b. W! P! ?;;
根据ij的信任度来决定是否与j进行交易[# ]. Y+ H, |& V+ `3 X; ?+ E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
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3 v( Q* g: k& y6 l( R/ f[

6 ^7 o* j  o- W
/ m$ H4 C( [  Ado-trade
1 z2 S% W: y8 o4 {( A. a
6 s$ k- q  g! G3 ]* K
update-credibility-ijl

5 j3 r4 Y5 R' Y, ]* i( K
6 [. I% p& W' W% Bupdate-credibility-list
; S, a" d# l1 U3 [

9 t) }6 ?4 y6 j: @- c* `, k
/ o/ p& [5 o2 A( qupdate-global-reputation-list

6 ?1 k9 t; E' s; M) z4 o- x7 l! e
! A9 ]# ?  P% k% j, [& @poll-class

, w- @% P0 J: _6 g  y/ a& Y3 N9 t0 A" B' D# {0 q7 ^( p! E
get-color
+ |' r5 O$ h- k
3 k5 M4 E( ~& X
]]/ B: m& e2 `3 t2 i: R3 |
$ W7 P/ o7 k6 X# q' K( G( Z
;;
如果所得的信任度满足条件,则进行交易
" u, L9 @2 I! V- R
! ?2 V* W+ Q8 w( T4 B. g[
# z; n. ^( V* v% i  ^* |+ |5 x
3 p% x. O, L: L
rt random 360

0 ?0 N1 `; V! |8 d5 M. E$ U! d$ q
8 i: D1 ]: M3 Ifd 1
6 ~' {. P9 u5 X
: a) Y- R8 `+ J6 s7 L" g
]
! w: V: H' q$ H! u- p

" c( |7 M" Y, Fend

* z( P% k9 Y1 E4 g% X
0 _0 W/ @- @, p2 [2 Y- Q) Dto do-trust ! c( N; x' C. g1 l! E) H  A
set trust-ok False
" {: Y; H; N6 L. T; b! x. f+ q7 ?

$ Y" J7 J1 X( i1 _: ]7 k$ glet max-trade-times 05 @: h1 E9 A! q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 k6 `/ Z. A- S5 }" f. X1 U% {
let max-trade-money 0
# F; b" o. [& C5 {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: e# W  q0 h/ M- G% plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- w2 d3 k1 p; Q" n
2 c& A: w; ?: }

5 ]% M* J# g+ x2 I* l1 ~get-global-proportion
+ b0 u6 C9 |: _& r2 |$ Elet trust-value
9 j1 k( g* C. p6 j+ alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

3 z, f- @" @% U7 m2 c# ]5 S, V$ Y) dif(trust-value > trade-trust-value)
0 c* S* H  z7 Y7 J[set trust-ok true]  N/ u/ o+ t. Y: a7 s2 G
end
: Z" t+ T1 `4 q$ f9 n
- l' |7 x' [' dto get-global-proportion& e% v* l: D- q& O- c0 C. _9 U
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 R+ f5 P  g! a, P3 p
[set global-proportion 0]
" x* ?$ n. `7 I[let i 0
0 K" L& R, Z8 xlet sum-money 0
) _) B" x% R. k0 v/ ?3 qwhile[ i < people]- m+ D  O$ p& l
[
, `# m! k3 ?8 M3 |5 Pif( length (item i
" z5 |3 I( ^7 A- p[trade-record-all] of customer) > 3 )
; G+ M+ ]- c" |! V$ k
[& h( D& `9 M8 Z6 K5 g2 e- Z( Z% l  @
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 d1 X; d0 V2 n( t
]8 G1 K( r  g/ Q2 L1 R- {
]
& C* Y  i& Z5 q! c) f+ n0 }let j 0
" F$ l  q: k, [- Glet note 0
7 Y# a$ o* i/ \3 o( wwhile[ j < people]& D- `) i6 m  U, v) ?1 }5 r
[
, ?: B! z6 D' _9 J0 xif( length (item i9 R  @" P& \2 g/ x
[trade-record-all] of customer) > 3 )

" C7 N, ]0 T+ t  G8 @* }[7 |" Q+ N' l, w6 O
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  T+ b5 }. G) h3 [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ C3 r( L! ~! _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; J2 K! d0 P# x8 h2 T9 s
]
2 E7 b2 }8 i0 w]7 h4 X& j! P! J9 q+ @: Y) {
set global-proportion note/ i; Y* P8 K4 x2 o4 t1 ^
]) ~' T% V# ~1 ]7 H
end
) a9 @8 f) d- a# [, V- L6 Y
  o  J3 b# T8 H6 x# f( Q% m$ ito do-trade! Q2 f' A( U! B2 \$ ?/ F
;;
这个过程实际上是给双方作出评价的过程
7 I2 ?6 v0 d6 ?0 x) o% l1 O  _; sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: V7 j$ M  y6 e+ K: M6 E- O) s3 ~# a8 n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 o9 X. ]  W$ m9 K0 W* d7 jset trade-record-current lput(timer) trade-record-current# n# Y, m( C4 C
;;
评价时间) M0 Y( j8 }* y
ask myself [4 k$ u# m! \1 U+ M7 t3 x  Y/ O
update-local-reputation
1 U( q" ]/ N( xset trade-record-current lput([local-reputation] of myself) trade-record-current
9 g: T' \/ N9 e8 I]
1 T9 h, h# u( @( S- Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* z* l- r5 D  R8 P
;;
将此次交易的记录加入到trade-record-one+ v& C4 h) Q; Z$ `; t. Q, O5 b1 S
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)6 J6 _7 O  y" W
let note (item 2 trade-record-current )- l$ e" d& e9 D) E
set trade-record-current
& d. J3 y  |% f' k9 S(replace-item 2 trade-record-current (item 3 trade-record-current))
9 y' Y, i9 ]! f( e- B+ C
set trade-record-current% S1 i8 E, A1 A$ S+ T
(replace-item 3 trade-record-current note)! a2 C0 T* V' M" J9 l5 |: d& ^; ]
; q4 k; k  `( ]) h* x% G

7 B. J$ u; O$ E* Kask customer [, B+ }- {4 m1 j+ y! ?/ ?
update-local-reputation- ^0 M5 j- y* ?" w1 {
set trade-record-current, X0 Z8 {$ N7 q2 U
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 o/ z$ X; d- u7 {: Q4 z" N/ S; }. n]5 Z: `1 f' X3 E+ R9 {4 _2 U5 F4 R
# T8 J) i2 y6 U/ Y( y" r3 C

8 T3 T9 C7 P1 cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 x5 p3 N& F" q
9 L0 S0 }  z3 G0 h( a: G' i
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ k' E7 F" `7 D( C4 b
;;
将此次交易的记录加入到customertrade-record-all
" `( l* z8 u/ @5 S9 N3 Aend  B* b" y2 ^4 S7 J  h8 @

6 k* O7 p" s2 D  mto update-local-reputation* i+ @$ _, s4 M5 t: C1 N7 i
set [trade-record-one-len] of myself length [trade-record-one] of myself
0 x, l: R8 n- h: Y7 F( t' O6 y. [0 ^& y/ I6 \
2 `: H# Z+ q; u. r5 j
;;if [trade-record-one-len] of myself > 3

6 \0 T0 A' S  G6 m: w  E1 _update-neighbor-total
4 {/ R4 l( s9 t3 {# M;;
更新邻居节点的数目,在此进行
, f. l  t8 W+ M8 _& ]) zlet i 3
/ L( t$ r# H/ slet sum-time 0
6 O' S) C* \/ q/ [while[i < [trade-record-one-len] of myself]5 l' [: [% d, u3 i+ \& |
[) k1 w! o8 M9 H. M; Z' L  t) i4 ?) O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 U# G  a. S' q( }set i0 N* e7 s) z" D$ ~$ z" r
( i + 1)

' p3 a% s8 l. {& Z]  u( |* |8 q) l, c
let j 3
8 C! E1 d, X( }let sum-money 0
4 k: @  I0 K2 O  F, Nwhile[j < [trade-record-one-len] of myself]' a' E# A+ T& V, T1 r* ?4 L( s
[, v/ }9 z* \' T% x. M( m  I
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) ]/ m! T4 v( r4 W6 s2 u
set j. J* V) ?$ t; Y4 n0 z" k
( j + 1)

& s$ ^2 }; C- x$ R; K4 w]
( T4 N! g4 z6 j# i- blet k 3+ A: Q1 A' D5 o/ t; L$ Z
let power 0
1 R5 l6 e* C7 l4 J5 Blet local 04 {9 Y% W/ j5 a4 r/ ]0 P2 x! Z
while [k <[trade-record-one-len] of myself]
6 l+ U7 L4 F% W% @. S  Y[
9 k, Q2 Y9 ^' a% d5 D5 _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) , D1 Y0 l( \3 Z: a1 n7 P% U
set k (k + 1)9 r" f5 b+ L- |1 m% Z
]& j) G& p+ K2 K: i: r% l
set [local-reputation] of myself (local)
9 ^  o  I* H1 w; Iend$ ?! B3 g0 X1 c8 r
7 k* M' R+ A9 H0 n
to update-neighbor-total
& E& l8 U+ g, N, s  d1 t9 n) B+ f- Q: ~% z# j/ j
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" f, }) d, d4 d( i& k/ S

/ `' r$ P) Z) I
" h9 B5 G: f" u5 M
end5 E. F% F1 Z+ @4 \5 v
4 z+ u- w* ~8 H
to update-credibility-ijl " ?  ~# V0 L$ O9 v$ G& v, [
5 V" x; n% n) X" [- h1 {
;;
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。
4 ?  n+ X' h& h$ v& S1 Q# alet l 01 g5 V- Z/ x8 W+ C' k8 z9 W
while[ l < people ]
( P& h) P; p: Y4 Y+ A0 ];;
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' U; G+ b4 ]+ d" _6 V$ I: a& w- f
[
$ ^8 A; t4 |' w) Z. K; V( p6 D% a5 K! mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ z9 y8 ^, t2 c0 _8 ]* v1 k: \if (trade-record-one-j-l-len > 3)
: @% h3 D! n4 i  h- n% f! a5 ~/ _[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) `* A/ N# v. |  ^
let i 3
- c" g2 p7 \; \let sum-time 0, |& T$ e$ i7 O3 g2 C
while[i < trade-record-one-len]6 c& t& U: C. L1 [7 E
[
1 c; r1 ~& U/ M" W. w. b  _0 [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 k5 j& |1 }/ C2 L" \+ t; }1 p
set i
& ?! s7 D& p. i4 u" D) h% \; a- @( i + 1)
- Q, H4 I0 Y* H, o; T6 t. v4 X
]
- g9 M# A  T6 ?: w+ ]let credibility-i-j-l 0
$ X& g+ V  r! L3 T1 U2 p/ Z, Y;;i
评价(jjl的评价)9 ?; k" t3 @; @9 Y0 m1 V1 H
let j 3
; |1 v. X- m. K3 _$ qlet k 4/ E: {7 t, c% Y9 ]  f
while[j < trade-record-one-len]. X! p0 R2 z. j0 D. e
[
, h( K4 Z/ \4 I+ z0 i* T) K. k; Swhile [((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1 [5 ~1 Z  U3 N2 {( X
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)4 `1 l- O! S5 h! ^4 @' B
set j0 Z$ c" y* x7 K/ I( \" t  x
( j + 1)

7 D1 S2 G: L* y4 h$ y0 ]. c]
+ L9 q% J0 @7 E3 @( Vset [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 ))
; Z7 V. p8 D3 i. k5 C. Z( `+ D
) _* _% ?8 D' K, Z- w

2 ?  A/ A8 y: L  @/ ?( olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' \) W/ Q2 d! H;;
及时更新il的评价质量的评价
/ e% a6 U: Y. c. K% ]! m% [set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! Q9 X9 ]6 Y7 [) P" C
set l (l + 1)# X! O# |$ Y* h8 l7 q
]9 o) v  G$ B9 t# A+ O
end
9 Z- n# S  e3 L" M+ X  E) ^, Y3 l% G! B2 _. m2 v* u+ U
to update-credibility-list
$ ^" a9 u* c4 v) Ulet i 0
  T& h: [2 H& I& a" cwhile[i < people], r+ {! z: Q/ K+ q( s, f1 H1 ^
[  V& q. o% u9 V, h6 a5 }* Z9 p, B; c
let j 0& B- ]7 i, G/ P2 ^/ m  F
let note 0! l- g8 _. U9 \- A6 Q, r! h2 w
let k 0
( S/ G" I7 m& @! F6 B4 p;;
计作出过评价的邻居节点的数目; K# [8 r: y9 `5 R5 B  C
while[j < people]
4 t1 T5 O' `  c" ~+ ~# ][
4 A9 S' L. ?0 M- o, _& Xif (item j( [credibility] of turtle (i + 1)) != -1)
% {' Y% ?$ E$ p. x( r+ m. G4 X;;
判断是否给本turtle的评价质量做出过评价的节点
/ n4 j1 F( ?2 |7 a- k& x[set note (note + item j ([credibility]of turtle (i + 1)))
8 [: ~& [7 {) Q* G& l8 Z0 };;*(exp (-(people - 2)))/(people - 2))]

  s0 B+ n9 r* U1 f( Iset k (k + 1). C. I. X4 Q# r, _# M, c
]
0 f' N. C2 ~9 c- n7 gset j (j + 1)
, p& g1 i! O0 a; ?) ^, z9 x8 q9 c]0 K% M' q! h/ i% L# t" M
set note (note *(exp (- (1 / k)))/ k)
  ?- M3 B2 g- M4 h: Hset credibility-list (replace-item i credibility-list note)1 W, x3 G5 G0 Z6 h; t
set i (i + 1)( a9 a. ^1 q# A  V- c# u/ z  t* @
]7 X4 D* \9 x% t
end
) j& n( o& u$ ?  d7 S% `2 C$ ~4 B" U' S$ c, u
to update-global-reputation-list: A* r6 Y0 o; ~6 `, P) b- X0 y
let j 03 b/ Z) U& E: o( Z9 W
while[j < people]
6 V+ u' X* i) ^6 z[4 Z# j+ m6 V6 Y2 w) o
let new 0
- A9 ^# a! `, @% Q;;
暂存新的一个全局声誉
1 d5 _' Q: L  _7 Vlet i 0
. P( c6 ~' G3 ~. B6 vlet sum-money 07 i' [4 D& z1 t2 F
let credibility-money 03 c& K/ V8 B8 ~: ]# i2 U
while [i < people]2 e' m2 p. Y) J" J3 b" W( |( ~1 W
[
4 M! a( m: b& a) G, ]5 h0 u, Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 c, m+ y& F/ pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
: v8 M# U+ O# E; p8 s3 ?  v5 eset i (i + 1)6 p3 U* k! c2 B, g5 @- \
]
4 P1 J) y1 d, n/ f) K/ F& T# Llet k 0) {" g! v% r# `5 b8 @; I7 R
let new1 0
, o1 E5 L0 x1 w% `) j" W7 e  Twhile [k < people]" X# Z3 s; @4 K& R% s; e4 ?: f
[* W6 ^  g+ \$ Y" H6 Z" q
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)
; L: r, Q  Y1 N6 b9 I; [set k (k + 1)
1 E! Z1 @  A% {( g]
% m! @4 k6 N$ G. w2 Q4 U0 ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 _8 r! Z7 B# n# c+ _# {8 u, s6 z
set global-reputation-list (replace-item j global-reputation-list new)
7 t6 ?5 E: N5 _! A/ Sset j (j + 1): q& G, r. J4 d! ~( v9 D
]
9 h$ `0 M) ?- J6 A+ A8 D; r+ yend
0 a8 B- n1 V) H+ z, U+ v. G
3 O  S  Q  G6 n" D& M8 |, g
8 q& k. q2 y+ z, H/ r; x% Q. Z% {8 S0 k  b9 D+ h
to get-color
  ~9 ]( b' x) s& x5 O! b- C: ]% m" z/ P: P1 l( w
set color blue
: X, K  _; t7 j3 H
end$ V9 |$ F; `3 ?* U* y  |

( f, @) \2 l9 x4 Kto poll-class
& Q0 C' N- I+ Y& nend
3 H: N9 d6 v  T& m1 R5 B: ^7 M/ n/ B3 a) [$ A( y) Z# t5 _
to setup-plot1* U4 f* f" S1 [) q3 A# Z, n! \0 ]
; u* Q- S0 p$ [) L
set-current-plot "Trends-of-Local-reputation"
/ X2 _9 u3 V! ]! }

: }; e8 |5 r3 S" qset-plot-x-range 0 xmax
( p4 O% v# X1 P4 B
" u* d' }  [: S8 N8 v9 k, m$ W' o$ _8 S
set-plot-y-range 0.0 ymax

& i5 M0 s" H" z; wend
1 M- k& y( ?$ `3 \8 _5 u$ W1 n3 C* S  X4 U
to setup-plot2, F1 |+ R$ F: g. [+ w% X8 T

: A- e) _: V2 M+ Vset-current-plot "Trends-of-global-reputation"
3 b- h4 P" @/ n% x9 Y" X

2 [  _! V/ H* L+ r: d; X/ aset-plot-x-range 0 xmax
! g) |  ~* K/ e( s; H/ \$ _
* u( r8 o$ u+ W6 ~7 Y3 R2 t8 A
set-plot-y-range 0.0 ymax
& p) `  y2 c( c9 [. t, q$ O
end' v9 ^3 v& y9 ^4 y- z' ]
# v* i( p$ o$ x2 E
to setup-plot3
' h8 l. `: q( Y; `3 `9 }$ R" A6 i5 ^2 `
set-current-plot "Trends-of-credibility"
/ v1 J/ D0 }, \+ ~# B: n. k
# g, y. E8 P# D0 g# k) J
set-plot-x-range 0 xmax

# D7 t3 H2 I* ?9 |& m
5 x- K: Z* e) M1 b6 {" d3 {set-plot-y-range 0.0 ymax
5 Z9 Q  Q; D* S- [$ l
end' i4 l0 v9 ~* N( c+ W  O$ X
! F3 D" [" O- e+ c' k8 v8 m
to do-plots+ K6 T. `5 i0 K. K. r: ~
set-current-plot "Trends-of-Local-reputation"/ U# A7 x3 z8 g# o
set-current-plot-pen "Honest service"
6 ]6 g- d# L: B6 Rend! h' d+ f! K% Z' \3 @7 p+ f

. j4 A8 z( l) z2 r1 s[ 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.
& {) q% W: @  e6 J1 X/ y
5 l/ C- |/ y1 e+ r9 n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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