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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:
2 d6 r: G3 v6 P9 F  E0 yto do-business
: q. M  [  C$ [ rt random 360
+ o6 Y1 d; p! h+ q; A' z# s fd 1
1 m2 i+ |3 h- R7 ]% ^  W ifelse(other turtles-here != nobody)[
3 @2 B; f9 @. w8 M- C3 S0 j2 J1 f   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.
* G6 T0 z" C9 ^+ u   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, N) ~9 @6 J/ Q  t  p! ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ ~; w# V! z0 s$ V$ p   set [trade-record-one-len] of self length [trade-record-one] of self
% F, }3 G0 ]0 r* S8 P/ b9 A- l   set trade-record-current( list (timer) (random money-upper-limit))
, s9 c3 {8 L; y: `2 p4 o2 q" z) z7 D0 N6 V; D; _5 _1 i
问题的提示如下:
1 @2 X- H  \0 \* h# U& H' j, u+ f
error while turtle 50 running OF in procedure DO-BUSINESS, n; B: @2 N" t6 M3 j9 }7 W
  called by procedure GO
' s: A+ L6 B0 i' k" D8 POF expected input to be a turtle agentset or turtle but got NOBODY instead.8 q" I. U  M1 P# p1 u- H* N2 D$ k
(halted running of go)8 U! T8 @8 T- Q  B) c& D1 S+ L

, M8 k' x8 h# ]. \# Z6 D  {& X# A% r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~~  g( A. N3 v  E  W
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 e! o2 m1 v) r" C
globals[1 U5 d4 _- V8 i3 S* S1 u" v0 O
xmax
! ]- k( `; D3 V  |ymax& _3 x( r1 P. p- _# \, D
global-reputation-list
  l* @5 K/ r4 p2 W- |5 ~9 E! o; f) [7 q, J
;;
每一个turtle的全局声誉都存在此LIST
5 m! A6 f3 o3 E3 H: }; S& [* {% mcredibility-list2 E% x% x* T; W
;;
每一个turtle的评价可信度
5 P  V( j5 p5 V( Whonest-service
: y( M: L$ j6 {6 a4 K3 hunhonest-service
5 L0 y6 A7 r8 c/ j% H3 B7 a! Toscillation
5 s# L' Z8 A4 y; F$ Q- }& Crand-dynamic
% K1 I4 C* i6 l% E0 Y! w6 S) ^& y]
- M5 D4 r% ^6 e4 M0 G( j5 o: e' x5 |& n1 s4 O
turtles-own[
1 c- S) ~' V! otrade-record-all
+ E9 L" t* h9 u& M;;a list of lists,
trade-record-one组成
, d$ j, D9 x/ F- }, m/ Qtrade-record-one
; [3 A& }! \& }! T6 ];;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 ]$ T5 |/ Y% w: c& L( M8 y
/ i7 _- H" S' b4 v: L
;;[
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]]( `; w# b& j9 q1 `' q
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]
$ L- Y- R* T; scredibility-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" y% D0 t5 ^- `' D) z) V
neighbor-total
' h8 v, g0 Q/ e; |5 e4 @;;
记录该turtle的邻居节点的数目5 ~: n2 I' s: V7 ]
trade-time
9 J# e: e6 v) N* w, q; L$ y0 T/ Y;;
当前发生交易的turtle的交易时间
) c4 v& z/ x4 r, m% l* Mappraise-give
, Z( q- T3 y4 N) w' _;;
当前发生交易时给出的评价
  R, ]# @' C+ \) b1 I3 Y& {appraise-receive
4 O4 `" K6 P! g1 Q4 n' s;;
当前发生交易时收到的评价9 ^3 j  g9 y8 n5 e4 _
appraise-time2 G5 F9 D% G# K. G$ q- B  T
;;
当前发生交易时的评价时间
/ |" K% j+ l" J9 w* x' Flocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- w1 N! b  r% K& e. K; Ktrade-times-total/ S3 ]! {" N6 A8 E
;;
与当前turtle的交易总次数- u# f: L* Q% t4 k; J
trade-money-total9 ^+ s2 k& m. ]8 G
;;
与当前turtle的交易总金额' p- \  s+ C' y+ x/ O
local-reputation' T0 V3 f0 k5 A5 \7 Z, w/ B
global-reputation
4 _. w) z6 \) T, w) a$ Pcredibility
& x. o9 }7 x: |$ d: p: q# h;;
评价可信度,每次交易后都需要更新
. w: {  ?2 N  M# Y1 Pcredibility-all) s- w/ {2 E: S9 q( 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
  z; S- p$ g8 O
. N0 M3 S" K0 n) h;;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* U" R9 w) e/ T8 _3 `5 S
credibility-one
# k: ]$ }/ @- B: R$ |2 r;;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
- Q8 [! y& d5 n: F& ~global-proportion# `( o* N, O3 M3 {6 n. r( d5 s
customer8 A, `) ~8 i8 G9 C- I, W1 i
customer-no5 a! w7 d6 c0 f
trust-ok
/ g8 S, u/ }1 L: strade-record-one-len;;trade-record-one的长度
' P  R" x$ n0 Y2 w]
& u, {% K4 D7 }" Y
. N0 S5 C( k$ ?4 G' ]( z! H;;setup procedure/ o( ]( _; x4 n8 U
/ m7 T" [6 `! T
to setup( X( u% T0 v7 a( L% Z$ E
0 L3 ~$ o3 _: A% T. o7 x. f0 g+ X
ca
6 B0 g% U( l9 c$ F$ V7 a! Y& z
) l2 O) C; K' Z! n
initialize-settings
/ n5 Z1 ?* g8 h. L

2 {2 M4 [& J8 F* M" Y0 y) P* M" h  ]crt people [setup-turtles]

  F6 S: ^+ n6 v; T% B* A2 t) ]+ U2 j& g' d9 L" _  m
reset-timer

. I8 ^1 O7 ]. J1 w5 I5 @1 N* t' ]% u3 P* G5 U& a4 g% J
poll-class

! Y7 G5 q3 U% q' B2 i3 Y) T: z% H& j7 C2 M5 a$ ]9 V" Y9 b: ^# t: a7 U7 f
setup-plots
- x1 ^; _/ }# j$ K) r

& n! E3 y8 j' t+ B- n9 T! fdo-plots

$ O- C+ l# B% }9 mend
5 _* z# e3 m4 d7 F+ S1 ^9 O0 a% R4 E, E0 s6 j% v) u( ]8 E7 ^, y
to initialize-settings
" V8 ]& ~$ x$ |" ]& g3 f9 `3 m7 m8 r; u( I4 {: s) ~) u+ v1 ^
set global-reputation-list []

$ I8 ~" q8 G8 h. D: b% h) U0 [! |2 E" `& T! v  R
set credibility-list n-values people [0.5]
1 T* G, u8 T. _3 L' A

+ n& Y- C4 ]  I2 e: ~& t$ M! u& P% E' |set honest-service 0

$ J! F8 H& [: B. R( ]3 M. w' T# c- X) l/ V
set unhonest-service 0

: _5 k( A6 w" k1 [  z1 F" h7 D
! U/ j* p  q" ]) a  Eset oscillation 0
: X2 I. v5 U' ^

! a1 `3 {8 \/ }set rand-dynamic 0

1 L2 F  d5 a4 p0 \end
0 L( k7 g  t2 {: O- s! {. ^/ L( s) V5 ^. p3 `% N4 c. g
to setup-turtles 0 s( Z( k0 v) z6 _
set shape "person"
% @0 H3 z- }0 ?9 _/ E( zsetxy random-xcor random-ycor
+ X8 ^+ S9 K: Hset trade-record-one []# n! }% P' c: i7 `) x" q# `

9 w- t9 S- e1 o0 kset trade-record-all n-values people [(list (? + 1) 0 0)] & H2 S; E7 G4 a1 x

4 s2 T; J6 j# ^& A+ hset trade-record-current []
4 s$ s2 m7 T$ J/ G: xset credibility-receive []" W; H9 m: a7 F4 S! }
set local-reputation 0.5
2 c) r6 o1 S3 M+ Qset neighbor-total 0
/ H7 v3 w& A5 Q0 ?8 Qset trade-times-total 0
6 P4 _1 c6 e( e6 y! wset trade-money-total 0
3 k( q/ }" s/ W0 nset customer nobody1 m7 D% h5 j. M3 C  j: S% w
set credibility-all n-values people [creat-credibility]9 Z1 y) C8 d  G. w- T
set credibility n-values people [-1]" ]( o, L/ U$ O& |' C* D
get-color
: A3 A- q( V( T5 Z. B& \% b; L) j6 w

' X& [  e5 F/ K- kend3 k% y) d: f0 L2 S+ Z5 ?

4 j% b4 ]3 W0 Mto-report creat-credibility
/ J! I% e, Q, X4 dreport n-values people [0.5]
# B( J* J& |! }; j$ H/ J2 x$ }end5 {4 f. S9 I/ H) l; M, _

9 p5 o  e7 O. E" Mto setup-plots9 V! T+ [( |2 p: o
& R4 H$ G4 O0 v3 W2 b
set xmax 30

6 j( j; o1 J% i& D) p, B2 \* |) G' {% \, K, ?
set ymax 1.0
; l! U. X# J  S4 C  I
9 b  [  m! y& f2 x6 b
clear-all-plots
4 j( G, R& t- t/ _' Z
/ a0 K; ~' o4 ~' l/ L$ i! K
setup-plot1
5 \; E1 r' Y7 ]+ e% o( J, ]; v  l

! n  ^5 T6 T% y6 {" esetup-plot2

2 x0 u/ Q: {/ Y# @
1 [5 A9 Q0 s: Z' Qsetup-plot3
0 r/ z: H6 K1 ]" D5 Z5 e
end
& h  ~: P! h7 y: p/ |: I: V6 N0 X
;;run time procedures: A2 P+ X( k/ r
8 i! p* Q, l9 g( E) |: [
to go
7 w4 D& F9 m1 t  P- M: d4 P1 l# L& E
ask turtles [do-business]
4 k/ r. @8 b/ f9 o
end' k0 l; F. \7 r& z

9 J& F. P3 ]* d# S  lto do-business
& E. ?8 _! Q8 K: Q) ~" u& Q

) C5 T5 U) e7 o, J4 Z6 |: V# Z1 T1 c
. h6 P# }* j7 o6 W7 g) f# {rt random 360

7 k1 V8 \! x" O2 p  K3 Q9 H6 O( S4 Z/ p' Y# ^
fd 1

* S. o: T: \, A3 a" {- l+ v
. K9 H1 m7 [: h/ }8 M" mifelse(other turtles-here != nobody)[

6 X% ]2 L7 O6 e9 L- ~/ u$ p9 d* P0 O% A8 [0 Y
set customer one-of other turtles-here
7 p- n' u& |* i

& }4 h3 @* A  c, f' ^3 ?; N;; set [customer] of customer myself

  i! _9 s5 e# G) z
( U% D, K% X6 L) x, Qset [trade-record-one] of self item (([who] of customer) - 1)
4 [; R' U9 _9 n6 a# Q6 p$ d[trade-record-all]of self
# {% i9 ~& R/ n/ `9 v5 ]6 [* W7 V;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! |' L: c. S$ P3 f' T+ S+ D6 s+ u) s6 C9 H
set [trade-record-one] of customer item (([who] of self) - 1)5 `! W( R4 {0 L
[trade-record-all]of customer
2 w0 Q  l2 E1 j+ ?' f7 @% z8 g
$ W- S' x% q; Y( t
set [trade-record-one-len] of self length [trade-record-one] of self
" u' X( Y" u5 R7 R2 D
! o& r9 D$ ^+ [3 }
set trade-record-current( list (timer) (random money-upper-limit))
& @# q/ F" T- A+ a

0 K: l2 `6 y- fask self [do-trust]+ Y7 w- V: I% m
;;
先求ij的信任度0 f7 h/ {( o) V
" [8 O; h5 N! e, F
if ([trust-ok] of self)
) y- I! ~+ j7 c, p  t* f' [* `, v2 z;;
根据ij的信任度来决定是否与j进行交易[! o9 h5 p! U7 I4 i9 ^
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! \/ e7 d$ s! j; w# \0 |, b$ T

6 i: D, e/ z8 C3 R$ T8 k7 \: m[
+ y3 y$ v1 p& G# g4 Z( q+ {
7 ?* t+ Q+ D% J% J& p8 O, Q
do-trade
/ E* [- k& F, t0 s/ e
% k! E# Z; ]# t4 I! q  B
update-credibility-ijl
, I  }  w) Y/ G( q
+ S8 F" o4 w1 t7 w
update-credibility-list
1 u3 W' _/ {2 [, a! {7 ]% B3 S
2 @% u" B8 i6 F: D6 k1 E
1 e- z6 P" C5 t! X6 B
update-global-reputation-list
1 m7 |, S; g2 z
: c$ ~. B) s4 r6 k( j4 Y# B
poll-class
9 N3 S/ U& K! p5 g

# d( Y' R$ D! V1 t; gget-color
& d- ^3 P; ~5 J" f/ j% I! p5 Y
- o/ O% t0 I+ S" D
]]
2 \' y! a/ F% }# V: U: V  J0 W4 d
* F7 O: S  Z. d6 @8 \;;
如果所得的信任度满足条件,则进行交易
$ X# Y) z/ t( I+ R% g2 y8 }* r) I) }
[
3 j! E& E- {" O5 v' _/ Y, b

; m1 Q; @* o0 [" N3 o4 o1 S3 Drt random 360

! F( s8 W& X! q$ |# B$ i# x3 A+ N2 T: o0 b4 U: u) E
fd 1

4 v5 E( c5 W! f# W, Y6 J* I: \) Z) v8 V+ y+ P" {' R" \, }% b
]
, X' U' [7 y4 j+ r& l" @+ r( V

- m1 w% Q. Q% B  I5 w, u7 o$ G9 Wend
0 g+ P% Q) z8 y5 h3 Q% f
' r) P8 s9 E! H/ t
to do-trust
- }8 i, M% ]0 m7 B6 ?set trust-ok False! D0 c$ p; ?6 `
" M( X7 K6 v' ^2 s: [2 V9 P+ T
7 ]% L" N( V5 `" U* C. }& q
let max-trade-times 0& F) \1 Y( P4 J% W6 C8 M3 t
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* U6 p) [) A. n9 z9 ?9 _# z" l1 Wlet max-trade-money 0/ K+ p, \; I( W; G" v4 v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 j; Q) H, ]4 |9 _2 ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
, w, ~3 p8 ]$ P" n) }$ Z( H9 w. t3 P/ |3 U
) s% m! S$ a* ^& @6 H
get-global-proportion9 h: a/ m: g. s) I7 w
let trust-value. ^& n* i( L- o! \/ }
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( b  r) [. {# B" j/ Sif(trust-value > trade-trust-value)
! \- w: p& B! s% C4 I[set trust-ok true]7 Z" g% c  P% o: ?) h! Q5 E
end' _+ c7 ]4 X8 y; V8 c) X
5 `/ y( [0 _6 ^$ r# u
to get-global-proportion
3 N, U: o& e7 s( t: m' j6 K) bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; i+ R6 w6 M. J" x" Y0 v[set global-proportion 0]
- }* l' q9 b: z) }) z[let i 0
6 c4 E# [6 A6 r4 ?( qlet sum-money 0" d4 [6 [- o5 f$ ?
while[ i < people]9 z; y. F: B1 O0 ~+ q, d
[
/ C" k$ D3 F' w6 G# Z9 ]0 Bif( length (item i
8 j7 [: S# K3 T0 q  g  ^1 a[trade-record-all] of customer) > 3 )

7 x$ Q- c6 x# d0 C2 b: z& _: n9 g9 T' g[, d9 {) D) k% `$ X( u. `
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ z: {0 a0 X8 }& R! [) W
]
8 @4 l9 V+ e0 @& z: }9 k+ {& B]
/ t- ?" r/ [/ }- wlet j 04 ^& t+ I0 ~0 A- U
let note 04 w# g2 P% K# J3 Z7 U
while[ j < people]
$ B7 t7 O) P( n# v8 m4 T[
( \- t) y6 x4 K! I  |7 e& ?if( length (item i5 k. v1 B! P$ s- K$ F
[trade-record-all] of customer) > 3 )
& @& Q# ^$ k; l0 Z
[9 V( C$ S" l, t0 Q# W7 s/ V
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" [6 |- H  m' P% X5 B
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* ^" m& w1 ?7 ]+ F1 f7 P7 \[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 W: C  I5 d& o5 m/ @6 p
]( ?; n3 a8 t4 |
]# o2 m: ~' R& x0 k% U
set global-proportion note
- ~" N! A% G2 c. w% ?' ~5 q9 l]
/ b3 a5 O; [, D! Gend' M8 T9 _- l* S; R9 ?5 m6 `- i7 E

9 g! Y* A- s1 _& Nto do-trade
0 g2 P4 V: h$ _$ ~- E6 K2 Q) W9 R! V;;
这个过程实际上是给双方作出评价的过程
0 ^. |( w( z) T) r; [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 E" V, R" X3 P( f: S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 o& q# X) x$ b3 F' U8 Uset trade-record-current lput(timer) trade-record-current" o% M& p+ N4 D+ P" N
;;
评价时间
8 N* s: P+ r8 u8 ?ask myself [: u4 k8 k& b3 v& @' W. x
update-local-reputation+ \; |6 y8 n8 v1 e
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 H' a/ ?. F8 C& n( D]
0 p9 r9 X2 g6 x* l0 q0 I, [' wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" J: _9 J2 W/ h0 [) i8 i
;;
将此次交易的记录加入到trade-record-one  [) T" c& D5 C  l0 Y7 W
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- c: @: M( i: q- R' [: u+ x$ d) mlet note (item 2 trade-record-current )
5 V. [) K7 G6 t* Gset trade-record-current. f* _& j' m+ T( Q( N9 s$ C' ]
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 W4 Z) P4 z  Z9 s, \
set trade-record-current
4 Y- `7 A5 h9 U- j7 V. u% F(replace-item 3 trade-record-current note)) h9 t* h. q0 E7 b( e
& l! o, E/ |* Z
6 p( {/ x6 H/ P' f. S
ask customer [. i. r) f) s& w; `
update-local-reputation
% L5 r. {# h# e% t" n, }set trade-record-current4 M" d' |, i# m+ _
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 C1 f+ ^: S/ T  H2 F& ]* F5 a]
9 g5 }& L# S0 l# Z5 p1 n) {% s1 p6 ~. z7 p% {/ P. w. `6 K
: L& [+ j4 o4 P- s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ ]! c* c9 F5 C: R9 z$ A1 a4 Q

" K! u. y6 F$ m1 U% S/ t# X$ sset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 ^0 r, U' J3 X5 r1 f1 E- \" H;;
将此次交易的记录加入到customertrade-record-all
; S( K7 e& [7 {7 Z  cend# g& g6 b( B' U) y. K4 g8 `
2 A8 Z$ g! t& Q; R4 o4 x; `
to update-local-reputation/ l; D6 z2 a; I- {  I' [
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ k4 d0 A7 L  s9 g4 I  ?" Q5 X# e; D5 d% o0 p- M$ {
) O1 p# G! Y: i0 N8 z+ F
;;if [trade-record-one-len] of myself > 3
; f) y2 k. S- F  _5 |9 U
update-neighbor-total, _  ^9 G" O$ ?* S4 Y
;;
更新邻居节点的数目,在此进行/ c& B) ]; _& i' r" w* s4 E* N
let i 30 V$ C# n5 Z  q; ]7 d1 f
let sum-time 0, u8 o0 N# c5 q4 N' j: M
while[i < [trade-record-one-len] of myself]
1 Q9 b  J1 w4 B" U[
3 M9 M, n3 z  W/ k1 B) m! {$ Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ ]. h5 _) k% P% N# a' U: I5 J
set i& B# i# v! d/ ^0 \% k
( i + 1)
; \7 `# A& h# [3 k* y
]
* T6 A. y; A! U$ R) c5 M9 vlet j 3
( z: Y: g, T: D# ?! p+ I# Flet sum-money 0
$ w' U4 L8 }4 H3 a8 ywhile[j < [trade-record-one-len] of myself]( w% G# ]# @0 t- _3 t
[
/ J2 ~3 J" O6 q. F, @+ X! lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 H) Y" B: ?9 `0 Q
set j
6 Y4 Z1 H; s# v( j + 1)

3 H! I6 d6 R, ^, r- c: y]! @6 |2 G0 x" x7 j/ I8 W/ y! {2 X
let k 3. T8 A0 c0 o! u* [1 _4 _! ?
let power 0
' g$ q/ ]% g5 l  Blet local 0
# O* Q* G6 N( y3 w& p* vwhile [k <[trade-record-one-len] of myself]4 q' r/ s. a5 a, X5 q
[
8 X4 x+ h, [1 n, u% ^) W/ |$ ~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)
! l+ J! m; V5 A1 c* L: v1 K* Pset k (k + 1)
: C. ]3 b: M$ w+ n: Y; `]3 J$ j! [2 P( Y8 C4 d5 \# e$ G2 D+ V
set [local-reputation] of myself (local)
5 K6 v3 O1 n9 a0 Z5 K4 Mend
+ m6 v1 o1 c+ B; r6 ?$ A) @# m+ ?% ^6 y3 O
to update-neighbor-total# u9 F/ Z2 ~% |: L+ X& s0 r

1 x  T0 X3 ?. ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 k! u6 b6 w5 T- h
. N/ h$ D- m8 @7 K1 F

6 g' e- ?) U+ R& ~: t# n' zend- V# x  i: X6 C9 \9 f: r" h

% y. p4 P; g) h: J- uto update-credibility-ijl
  L  [8 P* d4 F  @& V
. e) R5 ~- v; F# i1 w;;
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。% P! _- t! n( A% t9 ]& P; ?! h4 B
let l 0: V$ |% C- ]" y5 y. \
while[ l < people ]
) g% i* W9 k4 U4 t) C% |; n; Q;;
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6 p) n9 C$ K1 C- i4 E$ w
[+ Y5 b' k" K& a2 z) ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# H4 `0 {; {3 M! q" |: Q: lif (trade-record-one-j-l-len > 3)
- S* w$ z. k8 ?0 J& {[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* J' ^. v3 n8 e( N5 H  F% V2 [+ M
let i 3
: A4 o2 s  r" m$ |let sum-time 09 o9 }' r2 `1 ?
while[i < trade-record-one-len]; l9 m1 c7 \% I6 D5 P/ m
[) x  C8 b8 c* P5 z6 I0 ]6 b) q5 V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ j, r) o6 m, [( Eset i
) t5 e0 h& {& L: c$ v( i + 1)

# E+ x  T( V9 N]
7 z! T- R/ q/ ?; H) x3 `( Glet credibility-i-j-l 0' C6 ?" R# A5 }/ ~, J/ C
;;i
评价(jjl的评价): v$ [, b2 N' s" Z
let j 3
+ W9 n7 u0 e6 o6 Clet k 4
" W9 A6 q" x. |$ j5 Wwhile[j < trade-record-one-len]
! j' b( z2 v' f- X; z[
& ?+ s% F& m7 x! p2 zwhile [((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
5 ^( R, m2 e# ~* D: Zset 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)
" y- i: M3 O/ {set j
' O* W4 W2 \/ S( j + 1)

7 E' j- e" P! K5 x9 i- L6 Q]
+ [/ y* H+ Q, u0 N; P6 ?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 ))
# a0 f- Y9 l4 j
4 f& @* u% {( }) Z+ o: m- M

% z5 t2 ~+ z3 U/ Z# A3 q( klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 T$ B  n2 A/ k
;;
及时更新il的评价质量的评价
% `: \; H% \% O- |8 h. {' x9 {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 Y( Z. Y" K9 K2 g4 Fset l (l + 1)8 a3 Q$ D! u* e
]
: I- W. U: ~0 V4 _! x& rend- j- D3 C' I, M9 U
* d. m/ A  ^# K
to update-credibility-list
2 F0 {* _5 [9 b, o) h" nlet i 08 i/ e+ P7 T: ]
while[i < people]! {3 _/ I5 n( \
[
2 r7 U7 ]7 A5 m/ z% llet j 00 k8 e: w, T" z% x
let note 0& ^, s/ f: ?& o4 z9 `! t. Z
let k 0* U+ d; ]6 s! y6 A) Y0 {/ A2 f
;;
计作出过评价的邻居节点的数目
/ C6 z  e  R0 W- k8 a3 U" z6 awhile[j < people]
  g+ x- H% U) L[- U' T  z, f( n! t% C$ S
if (item j( [credibility] of turtle (i + 1)) != -1)
1 `  v" t! ^; b* ~: B& E;;
判断是否给本turtle的评价质量做出过评价的节点
. b( v4 A" @, W[set note (note + item j ([credibility]of turtle (i + 1)))
: W$ r- ^8 Z* Y; x7 X- p: c;;*(exp (-(people - 2)))/(people - 2))]

* B: h9 d2 j+ Y! aset k (k + 1)
' |3 j0 H' L7 N9 t9 _]- A4 T- {% Z- s  N% `/ R
set j (j + 1)
$ l* p/ q7 p. Q. i7 h$ V, a' C6 w5 h]( T1 I* s9 Q- [! m4 v/ D/ m1 n
set note (note *(exp (- (1 / k)))/ k)
% F1 Z8 L! c7 U7 e$ v* x, @/ X2 hset credibility-list (replace-item i credibility-list note)/ f9 w/ i, J3 B
set i (i + 1)0 H3 p) s8 u1 G+ ~! c0 J
]
* p; T' {! B% f( bend
1 z) J: L, ~5 X; ]3 a$ ]  A0 o9 n" p, H1 _! H
to update-global-reputation-list
, ?0 H9 U& s0 xlet j 06 H9 j3 f5 J5 X* H1 O
while[j < people]" {* `) q3 W+ ?% V: I2 [7 S
[
+ ?8 n) {) }5 e) h( W. c9 c2 llet new 0/ n; o! K+ V+ m. ?
;;
暂存新的一个全局声誉0 L) N; J* Y. C
let i 0
( q+ {+ z2 n1 R3 i5 z- Rlet sum-money 0
6 Q4 Y' m7 j3 v/ q" Llet credibility-money 0$ V4 j8 `* M/ w" S1 @3 ^+ t) \' D
while [i < people]
9 t' _- f: E  B3 V( l6 @" w8 x[) `( A6 l) @' Q8 O/ k, L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# J, U. f1 s% {8 |$ fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
7 G' Z) v  x* B" h7 T9 yset i (i + 1)
3 B* Y0 w8 B0 Y: c2 `]
! L* e( T' g* V/ plet k 0. p2 e/ \3 f9 E4 L4 g* u
let new1 0" o2 F+ {" J8 C' t
while [k < people]
* |/ m1 E1 [9 t! `2 B2 U0 w, D[
8 ~' Y1 c8 a0 V7 i5 c5 [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)) U4 l# f. E, W- n
set k (k + 1)
" m% c; g3 \+ S' n* T4 y5 R]
6 N- o3 e; p* \set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 |, j4 ?2 H0 U& |+ Z; c9 Yset global-reputation-list (replace-item j global-reputation-list new)
3 W+ `7 R! _! {set j (j + 1)0 }2 v+ ~$ j8 Z7 T2 S7 Z
]7 [/ r+ d. {) M; R: W' R
end& C) Y, `# Y! N

% f# ~6 I7 B0 x/ o" a3 S/ b) t- }  Z$ R8 r
* i0 ?0 S% o1 f1 j3 H( }& F
to get-color
( I+ T. t! K2 d/ @8 n$ j5 J
2 A, D1 d, G3 C2 K, b# {) w/ ~set color blue
8 J5 A+ x- t3 V  M6 X: S: W( g' K, B* }
end, l/ S7 M' l4 Z8 ?
- A1 r% E! B: f- @5 K% h
to poll-class0 n5 J: w9 V$ g# @
end
0 ~% B* [$ P4 [) F, y6 o+ T! g. `$ T4 W* ]( l- K
to setup-plot1
7 L- @: L" z2 Q4 X8 V7 D" @- M1 n$ ^0 N( M7 k
set-current-plot "Trends-of-Local-reputation"
* @" r5 U5 S+ t5 ~

( k) J; y9 l* Z# ^, f. u9 S! Fset-plot-x-range 0 xmax
4 M' j2 G* S! C4 O4 {) b
/ o5 |' ?  E" U. w; F/ |
set-plot-y-range 0.0 ymax
* W, g3 \& |0 n/ Q% v0 H
end3 D9 ^- M1 r0 g" ^1 T! @8 {7 F
& h  K8 r4 c- y, l/ B; _
to setup-plot28 _. Z# b/ z4 P0 W
8 q' ]& q; |( D* H1 b
set-current-plot "Trends-of-global-reputation"
0 }( O2 B8 Y4 L2 o) b
0 c# b5 S! ^3 L# U9 Q
set-plot-x-range 0 xmax

9 {" F' r* a6 e; B- R! M5 _$ F5 B8 R+ C  V! W: U
set-plot-y-range 0.0 ymax
8 I$ P" ?) e* R/ L
end% V8 X) i4 T) ^3 t; d- j

/ I) a2 @2 P* U% [to setup-plot3
; a& P: f8 G  `2 A- r) l+ S4 u0 ~+ {$ Z
set-current-plot "Trends-of-credibility"

  R0 m' ]5 j0 q$ E1 P( L- {2 G* _' k/ N) J! C- z/ {# {5 T9 a
set-plot-x-range 0 xmax

- K; \* h7 y; ^) A& s; x0 {$ _# G* v" w" |2 A7 Z
set-plot-y-range 0.0 ymax

% @6 P% E# w2 i# U. Y  S6 k# x! eend
0 ~5 b* d7 G# S3 J/ p! @. ^' O+ g1 @6 k
to do-plots
! k6 }7 i- R1 k4 w. k  b2 cset-current-plot "Trends-of-Local-reputation"
* }$ s( {3 j- j# Yset-current-plot-pen "Honest service"# O' r. P* u" f9 y) c" N' x, K5 Q
end
% k/ O6 S8 T% a; {
: f: g5 K3 V( B[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.8 Z/ c3 k- S2 k
% y( A; d# i+ W: e# c
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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