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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:% ~0 R8 |+ _& i6 U4 j
to do-business ! S" `% ^1 W' K- e9 d* O$ o5 X+ f
rt random 360$ ?6 d5 f! _- C
fd 16 ^* L4 a) ~$ r' R1 E
ifelse(other turtles-here != nobody)[
7 Z2 A& g& T# N% ]% s   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.1 a0 T+ ?- h, t, R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; r! ~0 j' N) a% L. z) A9 j6 ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ I; B. A) w. [9 |2 X8 F   set [trade-record-one-len] of self length [trade-record-one] of self9 T1 M' \3 Y: o
   set trade-record-current( list (timer) (random money-upper-limit))
4 @5 `+ q1 r/ r! Y, S) A( b$ Q7 _# |7 G2 w
问题的提示如下:
9 b& H! e, g# f# @% a, r
# F1 P9 X' ]! ferror while turtle 50 running OF in procedure DO-BUSINESS
6 C2 b  O5 ?; m/ r4 T/ i& p4 g  called by procedure GO
  o& V  V2 y8 a0 Z  S- A4 Z& QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' `6 _8 P4 W' E' [- u' N
(halted running of go)
) Y4 o- Y: q, @5 o
' ?9 a# A9 x% ?6 G' 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~~
$ Q6 H2 k( s' G. B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/ C# H/ x( j% ?, R: I
globals[
0 _9 B4 ^% N' D( @xmax
: d  `- O2 K. f6 N4 p4 `$ v0 H6 _ymax
' Y5 O/ d* W+ R1 ~- Gglobal-reputation-list
3 [2 @9 M: w  w  a: \% @7 B; b7 ?6 K& P1 V1 p4 [% {* U
;;
每一个turtle的全局声誉都存在此LIST9 u* c/ D2 F; X( O. o
credibility-list6 ^5 c5 _" \) I+ G! y
;;
每一个turtle的评价可信度
- B6 V; s9 J* \0 |3 f+ ehonest-service- @. |1 a8 L+ |
unhonest-service
( w& a# F$ \% Doscillation& K5 k" N2 ]; y  W/ C3 _
rand-dynamic7 @" Q& w# V4 Q7 ?4 C8 P. l
]
- G/ [  [% y3 @' L; ?$ O7 f; h9 f! e# b
; ^6 c6 G! E: z0 J; I+ Rturtles-own[
# S, p$ e/ Y% i  _5 atrade-record-all
* @1 r6 K& Z" y/ P+ b/ Z;;a list of lists,
trade-record-one组成6 W. N: i- f2 ~1 [4 O0 i
trade-record-one
: |' g* m* J$ w( E5 d6 k( d- q% q( o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 Y- i+ {9 q/ m0 T6 v8 C0 A4 z4 a' w  |, g9 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]]
2 w* U% T2 P: q3 ^  Q7 F" Htrade-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]
9 e( z8 n9 L/ r4 V9 H8 t- W. kcredibility-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list3 K* Y& w2 r4 r5 z4 U. ]
neighbor-total
! g. H' Y" s1 p5 f0 s. N/ F9 D, e;;
记录该turtle的邻居节点的数目
6 q2 s+ ^1 W9 F' }1 S$ t& S- qtrade-time! C, E7 I8 \1 d6 |2 x7 ]$ W
;;
当前发生交易的turtle的交易时间
: v  U* l$ Y3 }( {" |3 O, S+ Mappraise-give
0 K; m; ]" e- O2 L( `1 @8 n;;
当前发生交易时给出的评价
0 }* S0 k4 W7 h3 t5 Rappraise-receive
0 ~% m& n- ]2 Y* J( H9 z' j;;
当前发生交易时收到的评价: C+ E  q( i2 T/ u+ n/ F: k2 y
appraise-time
) ~+ D2 p& Y) h: ~2 w1 R;;
当前发生交易时的评价时间
# \" q! p+ K3 n, K3 Y$ |; B) H' Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
% G* Y2 ^5 |" V" R' o: ?trade-times-total
( C$ G# W6 |. M1 G2 M;;
与当前turtle的交易总次数
( }; X; |  A& q( K$ I8 ]( k. ztrade-money-total* a- X5 G5 X$ _' o9 z
;;
与当前turtle的交易总金额, _, m2 Y9 m7 W) E
local-reputation
/ Z5 i: k7 R7 @- \* eglobal-reputation
( G/ Y7 l8 B2 O( bcredibility
4 }9 _9 q1 u% }7 h0 E% ^* A;;
评价可信度,每次交易后都需要更新9 L' M; @6 r! i" g
credibility-all
& V. T4 F# M: ?. U9 M" U;;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
4 l7 E8 `* L* h
: a) b2 v9 n" Q- b1 A, ~;;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0.55 B, E- `# J" d! b  N2 ~
credibility-one
2 u; L. M1 X* T6 e& L* Z;;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  ~4 Q8 V4 b# h% p2 u2 @9 Z. F
global-proportion
' }* \3 G! l# T9 Dcustomer
$ ~& ^# e& n5 k1 P9 ~! L# n$ @customer-no2 d. \4 g' d2 U; x6 P
trust-ok6 a* z7 p0 r% c9 [% d
trade-record-one-len;;trade-record-one的长度
% I. J/ h2 e& t2 v], w6 w) W1 m7 R6 B' C+ u
/ F* l; C" A$ T
;;setup procedure; y% f( d3 s& [" L

' D- w0 L1 C! u7 m8 ^! D! z( ?to setup
. Y2 w7 b8 A( x3 l( \. \, g4 J" o; ^8 D- H+ c- L4 O8 I. [% P8 K
ca

; R+ t( v5 u" t- Q  ~
$ N! q1 l7 i2 Rinitialize-settings
: N; l4 s$ X) j; C" @# {
) R" f! S/ _+ Z5 @
crt people [setup-turtles]

! p+ ^6 e1 _  x2 q- v6 N0 }
0 f) `; }  K  h1 s4 p; M8 |. _% Breset-timer
0 D. e' j- S) c

0 C% Q) J' ?' |4 |5 ypoll-class
- ^& j; v& w/ C! n+ v

- _( T) A% T8 ]. H0 g& w" b3 q& osetup-plots
) ~( Q! N: @* f

  O8 ]2 g% d2 n* s( y. U; tdo-plots
! l, g3 Z; Z) R# f% a
end
2 {3 Z+ F' b- J3 F4 f2 _! d& Z8 Q2 o% V+ ^# P$ N$ w& H/ a
to initialize-settings. n) o" }/ h0 Y0 q" {
" x9 Y* K7 n: N( A7 Q. ?6 U3 t
set global-reputation-list []
& _' m8 R) N& r! A( j; |2 W& l

8 Q9 b; H( _! Q! Rset credibility-list n-values people [0.5]
5 C; }/ `" o4 S1 d
8 m: M3 N. Q3 A4 e- r, `" t* f
set honest-service 0
* J$ q! D- s& J2 L* i: {
  N9 h1 }# K! V, D. c( C) U% R
set unhonest-service 0

" `  l1 v0 I, B6 s3 ?* {- S9 U5 L. A( Y/ H0 b
set oscillation 0
6 x$ g+ X3 z$ x/ u( W& _1 q& k) A

) C+ U0 t4 A! }1 Nset rand-dynamic 0
, A9 y7 {. V! |% m9 @" }% B
end
; q. J8 ]- a9 X/ C- z
; R  S& o& H! o- b8 bto setup-turtles
8 O6 Y! {; |3 a9 o5 _% ]( ~set shape "person"
4 n$ {  }; H) w+ j5 z! gsetxy random-xcor random-ycor6 _( X- M6 k& t$ v: o1 G! k8 K2 i
set trade-record-one []
# A' R, H! G* S; v! o, C

+ K* X0 ~* t. l' B1 [6 C4 e8 Gset trade-record-all n-values people [(list (? + 1) 0 0)] 6 i3 p9 O% ~9 ~0 F& q/ f: Y
1 u/ x$ Y( \& g* }; }: b0 n9 @  X
set trade-record-current []
! T+ _* s& d$ i6 mset credibility-receive []' }3 M5 }: x5 @* \6 ?8 h
set local-reputation 0.5
/ I$ g" Q1 G. }" Q9 H# l2 Yset neighbor-total 0, ~8 P7 r- g% ^" }# O
set trade-times-total 0
: b5 B; P! U: N0 m* B0 W6 d3 [set trade-money-total 0
  A" s' g: }! k& mset customer nobody
/ j: T4 i" R3 ]6 B5 _4 [set credibility-all n-values people [creat-credibility]6 c" _% p. @2 p7 ^% l
set credibility n-values people [-1]
9 O2 s6 v: y! r8 b/ w0 S( hget-color
9 H  I. N- c% e. G. C
9 t- @4 P* r( M1 A; d, x
end
% j; F% f& n( p3 m9 |" O" |3 Z, P/ ^6 E: w
to-report creat-credibility- v6 a( p+ i; K. S
report n-values people [0.5]
& j0 J; L# N' ?, Vend( G' C1 ~& L! A- T+ o
/ j" c9 H# A3 B
to setup-plots' x0 v6 R0 _/ L' R

; b; F2 o& |; {% l% iset xmax 30

; P1 o, b4 T$ I% U# a3 I
0 z! l& |* U; b( P/ T6 Lset ymax 1.0
( y' x/ d" j# g4 L4 {

3 Y/ v/ v! H7 s+ X$ X+ X1 K1 Fclear-all-plots
0 X( N% `  O: `- o
5 d+ }8 O0 D: T/ a% T9 P, ?
setup-plot1

" w$ V6 R) Q4 C! l
, X  d; u5 F* N# }. m8 Msetup-plot2

! J& t3 T6 [7 n1 f: o3 @6 }( o, ?! F& q1 ?1 \
setup-plot3

/ s* i2 B- m! Y6 x8 ^$ \end
- r3 j* J0 z5 c+ C; i% B
# T+ O: C# t0 h' V+ R;;run time procedures
9 T0 z* C) y% w4 J0 N# M
" e. `5 p0 x' w6 V" ]! ], U& tto go+ {4 Z2 m8 ?4 r- g7 d( H

3 G9 n' i" g0 {; P, Y! t7 Task turtles [do-business]

) K2 c* ]+ o8 Z8 T) ?  {6 Mend" A- ?4 u& g7 ~

* F0 b6 O  U2 D) s& hto do-business
$ K4 T% E& C/ w7 L4 d# S

6 y" c% s6 V# a+ t6 Q8 T) B* @+ x. }8 F) P* Z# A
rt random 360
7 W+ p) j: e+ H- F! x* @+ ^

& W2 R3 |# }- m. Z5 Wfd 1

& G( E9 s8 n! N+ F, D
* w( p) H( Z/ d' Kifelse(other turtles-here != nobody)[
+ S/ W/ w4 C3 `5 h( I

. ]  }3 t$ s( K2 [) hset customer one-of other turtles-here

/ u" {( B+ q* N; o$ M0 Q; n
" r) K# s! y/ C. V9 E;; set [customer] of customer myself
, W$ D( Y) E2 q. H) f9 Z
4 _( W% X" x' B: W1 C
set [trade-record-one] of self item (([who] of customer) - 1)2 e6 ?2 K5 S: B
[trade-record-all]of self
! M9 p8 E- p8 d1 t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( w. r" a" B, `- e% s9 e
6 u( Q% S. j: T0 e: h  |set [trade-record-one] of customer item (([who] of self) - 1)
& u+ [2 o1 C" d! I( e0 e[trade-record-all]of customer
/ o2 Z0 n' s4 T3 N$ i$ h! ~
. a/ n9 r8 p( N8 w" F
set [trade-record-one-len] of self length [trade-record-one] of self

; Y$ N; B5 F! E0 `
& O9 y. \+ d9 ~set trade-record-current( list (timer) (random money-upper-limit))

. U1 r- O8 e" T; G$ J! k6 I+ W! d. \" P3 M) ~- n+ z
ask self [do-trust]0 ^& O0 P( E& B1 X
;;
先求ij的信任度  @& \' Z1 g2 M1 N$ p6 a

8 W# d3 Y0 Q0 v: h) `7 gif ([trust-ok] of self)
; P* E$ V! R0 |9 a% i9 C;;
根据ij的信任度来决定是否与j进行交易[) H0 ]% {5 T8 i6 ^. f( D& p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# A6 j: ^  |) E6 D* i0 T  R
" o8 f5 l' a% f/ _( d4 H% B2 h% i[

+ p: D& G/ }9 h* T5 K' ?$ ~" n1 i, s* n1 A+ h. B$ L- t) X5 L
do-trade

3 T0 s: p0 B# N5 a
7 v, f/ x3 v1 t' r) y+ ?update-credibility-ijl

. B+ Q7 B8 L7 `" G' V! H# @; o2 t$ }! I
update-credibility-list. K8 ^- z' I4 _6 \: ?
4 A( I1 Y+ a* m3 ?' d$ K

6 R) v, u' R5 M* [4 a, cupdate-global-reputation-list

7 v6 }; L7 J& X  ~8 d1 W/ E' L2 t8 T# s+ z
poll-class
- B2 G9 |0 J. ]) [4 i
0 j/ c: |0 h/ z) U, z9 j: Q
get-color

+ T. j' ]+ s3 @8 Q) q
: A) f9 m3 S1 u. _" {( Y]]  t( ?# y5 u" h

1 `: Z" i4 X# U  b% A3 Q2 @;;
如果所得的信任度满足条件,则进行交易: J" ]! g0 o1 f" e4 C
$ T% q) u7 [, @
[
" K$ ~9 _9 K- }! \" x) h* o
" C5 b' H/ v. ^
rt random 360

$ G# }  ]! X+ H
5 D/ o( P& |) Jfd 1
8 @+ L. s( S7 v& q4 _6 z7 I1 |* w
0 x; b9 H! i5 u
]

! [0 F8 Y. O! p9 f( I( b+ H
- W( A! a0 ^* B: x4 iend
! v1 V( \5 s- D+ N
2 U. ?( z4 l; n+ W- I, L
to do-trust - K) ^2 c: G6 k. Q2 \6 d! h$ S' W
set trust-ok False0 k% [  {9 h6 n& `
7 f$ |' m# ~. W7 Q3 s) Z

( g0 c, Z7 R$ J" {; X; @' Nlet max-trade-times 05 o& ~, A+ N# g. j
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
. Z; f/ x; D5 P" `let max-trade-money 0, c. t+ k& ~9 I- [5 m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ ?  Q' H0 Q9 M7 \* j/ ~3 p! ulet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ q8 B0 h' y& @" z- }

; w4 j9 U( m. i: p
% @/ L0 s, `+ P4 l0 X
get-global-proportion
* }+ \2 A, t  ]let trust-value! D3 s* t5 T  Y) s. ?9 S" Q
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)

) |" F* W- X( |3 c! s  ^6 Oif(trust-value > trade-trust-value)# n- g! B3 d6 r- p3 `
[set trust-ok true]
1 R0 q5 a! q! y8 `) F( h( [9 l2 N7 Pend
# w, Z) w5 g- y2 ~7 U
9 r, S( L9 v: a2 ]to get-global-proportion
4 x0 O1 K9 L3 P: g: ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 q9 P) B+ F8 b. S6 j' @
[set global-proportion 0]
5 H9 d& e# z% f7 w[let i 0
5 _6 g, P" j  n. i8 s# ilet sum-money 0' f5 R, O" n1 e$ J% g' w5 \. n: D
while[ i < people]4 r$ V9 \( H' j- K0 b
[! E6 w1 q: H9 r% y8 N$ G
if( length (item i; p! d& O; [  x3 T8 b- N
[trade-record-all] of customer) > 3 )

) J+ r% f2 Z) w3 H[
6 I1 k6 d% P- v9 b' P; |9 r: [2 aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ a- A( D: S- ], `, {
]- |& E6 H& D) `4 w
]# `3 {% E7 M" n+ a' d
let j 01 U( N1 a8 p- s( q, d- Z4 w
let note 0
2 t: ?; ^" S) ?while[ j < people]' i9 `2 }# _& p9 H* C0 E6 z
[
$ N1 e& t" k+ P7 g. M" aif( length (item i
1 _' D3 P8 V# O1 ?6 w[trade-record-all] of customer) > 3 )
1 n) P6 @7 c3 r7 U: T* [. {: G4 X
[
2 w# y$ m6 k0 Z4 V$ j" C8 difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( U3 \) h7 D" |7 i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 ?  e# i+ k6 d3 t) J9 Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: e8 m7 b4 C7 |
]
& S- i* @/ G( @0 p1 K; M$ I]0 S- e. i' H( N$ }4 X
set global-proportion note
2 a$ r8 N$ T$ f# N8 B5 c7 @]
  k. r5 K( I4 g4 Vend+ y0 I( O  ^7 x* h" J# K' ^

6 U$ Q5 Z% z0 J, p) ^to do-trade2 h: ?4 N2 Q: s
;;
这个过程实际上是给双方作出评价的过程2 h& h' }- [$ ]# v. Q$ c! y: Z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: U. v  @2 K7 H; Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 k8 \! G) q! s: [2 ?4 e  G
set trade-record-current lput(timer) trade-record-current6 ~+ o+ y7 Q+ e+ K! w/ ]2 o* N
;;
评价时间
$ P4 O6 u6 r8 z" p9 sask myself [1 q1 f3 _0 R$ x
update-local-reputation- d+ j. Q/ m% T9 [/ l
set trade-record-current lput([local-reputation] of myself) trade-record-current0 n% D" }6 t- i; S' E9 H
]0 y: \! R8 u' W  [* f" }9 J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( O& X2 e2 Y3 f3 [( |
;;
将此次交易的记录加入到trade-record-one  ^% ]0 Q1 c0 p9 n( @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# I9 M, ~( D! Z$ x
let note (item 2 trade-record-current )/ s) _) W. x+ ~3 a! G9 [3 C
set trade-record-current
: x# x+ f1 B8 c" v(replace-item 2 trade-record-current (item 3 trade-record-current))
4 Y& n0 b# _/ {& a/ x0 `$ M
set trade-record-current& G9 v) }  O" z
(replace-item 3 trade-record-current note)
# e/ G+ }! S. w+ }% ]
# x! h$ O+ t* p: z! O
" y3 b' ]1 X9 p$ w& m
ask customer [
6 M; ^7 O5 m6 wupdate-local-reputation5 x- Q* e, H: [( Z7 U
set trade-record-current
7 ?0 e  m6 Y! Q& l4 ](replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 _( ~* i5 {# \0 U/ @$ J
]
$ U3 Y- G+ b" S5 A) g' k3 ^+ L) t) M5 J( \) M- f
0 c; @% W4 X, v  R- j
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" ?; ]' @, h0 l: f( @9 F, h) G  y0 o

* s2 |3 G! m# Fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ h5 Z3 Z3 Z8 B  i) h- c: q" V3 C;;
将此次交易的记录加入到customertrade-record-all
; ]+ }% D; p- e% G% g) {  ~) y8 wend
' H0 o* k) d& q0 H0 \& \6 \- c+ H2 F4 I; ~' T: N' [6 F
to update-local-reputation  y% u0 u5 l, K8 j; I; O0 M4 P, D/ E/ k
set [trade-record-one-len] of myself length [trade-record-one] of myself
; w8 v. z' F: p) }' Y# `: A
. u! s: U! l8 a" G8 V9 O9 D6 [0 X/ U. R0 s3 E
;;if [trade-record-one-len] of myself > 3
5 \! c6 l0 r: A
update-neighbor-total
3 t  c, A; [0 o. R: s;;
更新邻居节点的数目,在此进行
3 |2 A: N( T8 e3 ]( z4 F2 c2 Qlet i 30 }* y. j+ e( T& d. c4 K" r
let sum-time 0
2 d! l1 {3 C1 x$ @while[i < [trade-record-one-len] of myself]
7 \: }+ |" d* [" |[
1 B) ~) I1 e7 ~$ dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* n0 p  H# Y& R" H' q
set i4 v; d) {0 m7 y$ k; R$ c0 z; U' j
( i + 1)
3 h1 u9 ~/ C% a+ s# u
]. J4 s/ x0 c; P! b4 l; L
let j 34 r. @; _& [9 `2 L$ M& E. Y
let sum-money 0
5 G! k$ e; |; q- Z" Y/ Uwhile[j < [trade-record-one-len] of myself]3 m, I$ {( l: m# [" l. k8 S; X/ I
[
2 M) Y. p8 m7 J6 \3 Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
3 o* |9 f: y4 T/ a5 K/ r. pset j3 {' C& [* F1 J
( j + 1)
8 R8 V/ U7 I) S- T
]' m( N3 I2 ^4 J, ^5 Z  ^
let k 3
- G, [  m9 ^+ C  S# F* nlet power 0
+ N! ^$ g9 P. f5 u6 R& Rlet local 0
' b' r9 j0 [  y+ Bwhile [k <[trade-record-one-len] of myself]4 f- Z- l1 u7 |4 M2 L1 H
[
1 Q" c/ W1 @% f+ T3 {7 Wset 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)
! A( r9 G3 Q$ r) Z! Jset k (k + 1)6 ]7 }/ ]0 l$ F! I
]
( R# _% m! Z- y4 U4 aset [local-reputation] of myself (local)1 S# ~' U0 {7 |
end/ i1 b8 z+ H5 S9 w7 p2 B: M

/ F/ q2 H' t" [4 j  H! @0 C, \' Pto update-neighbor-total# g, d/ g$ D4 v! Y; C
' P$ s! u; {8 U. y  a" c8 h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  a% i4 m+ E6 P! q( }0 e! V4 w3 ?" c6 b* W, Q2 z7 y: e

2 h+ V' ~0 y/ n, Send8 {/ e& y8 z+ h7 d6 J, V

* ?3 N* p/ |3 N* ]% l/ f6 uto update-credibility-ijl 9 h6 c% v) l8 T" l% Y- ^- K
- W- ?1 ?- _8 t; `+ j  J
;;
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。" I- b5 T% `4 o, ^/ b/ [  o
let l 0
5 _' X; @0 o5 Q( d1 M1 gwhile[ l < people ]
9 L3 J3 d1 |2 j;;
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
7 K) E( ~9 a- s% w5 ?+ d8 g' h[
* M4 p9 d  @0 i5 {; Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 B$ c/ E( [" e; i. V- rif (trade-record-one-j-l-len > 3)
$ K2 l0 C7 T  ?  A* G[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
% e7 a& J9 u$ O" d5 y$ t3 Mlet i 3
3 z; J* @( _% e3 A1 @6 T2 Z$ Glet sum-time 0
, z; k6 q" ?  h: V5 N: b1 wwhile[i < trade-record-one-len]
/ j& G5 E( A# _6 C[+ P* \" S1 D7 @: W  N% ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) b/ ]' l0 F0 q6 F! w( X+ xset i6 F! T8 m. _3 ^* w
( i + 1)

& U; D( x+ X! s  [% D9 m]
) C# w9 a% m% A) H2 rlet credibility-i-j-l 0
: I) }% K5 z5 L% {$ H# B;;i
评价(jjl的评价)
' \- h. [/ P1 S4 w3 K2 wlet j 3
3 q+ p; r" L! R( jlet k 4% b: S4 @% ^$ Z, M( k
while[j < trade-record-one-len]+ `/ r, k* G0 l. Z" ~: A
[! j9 p8 U2 g  ~: o6 H* a4 j
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3 V$ g* S, p$ A: B
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)
+ v* d+ ^9 ?+ \8 ?$ Sset j
6 Z  H" Q( C" ]& @, Q- \# \( j + 1)

  E+ R% S3 }4 t" M8 u0 y]7 {0 C  j9 B) O) B% H- m/ t; t( _5 G& H
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 ))
7 `) U( @+ }7 e" ?# V  j, Z8 |( n4 b; p/ P& u
- @( U1 w0 w! z7 Q- [  p( H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ V0 r+ R: K& Q# S;;
及时更新il的评价质量的评价6 m" g: `- w+ I
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 c" a" [- e1 t/ R  ?$ G# a" l% d
set l (l + 1)
* x" z( T; X$ m" S], c# F, x0 F, D
end
2 X) Y; f& f  ]
& e( y0 }: b5 c# h6 F" i) {$ Oto update-credibility-list
; z- Q' |8 E/ M$ j6 W/ X  O& t% Flet i 0
4 G: t* w- N% Y* Fwhile[i < people]: o; A: ~: n; _" I5 ]# Y4 i" h: C
[
) }) S" y) r3 ~$ `' a# ~let j 0
" R6 Z$ R! Q% elet note 0
+ C3 X  [* s, y( ?let k 03 e( |0 _9 K2 K4 k2 l! ^
;;
计作出过评价的邻居节点的数目" M: \! i* \( d1 b
while[j < people]( C9 t: V* v/ t9 X. {: Y' w
[
* V: P2 G  Q( i3 E: ~if (item j( [credibility] of turtle (i + 1)) != -1)
6 e0 ^! t* ?" i( Z;;
判断是否给本turtle的评价质量做出过评价的节点
) Q9 t. O! b- L  x( L[set note (note + item j ([credibility]of turtle (i + 1)))
' h1 m2 u( G6 F% a+ F' l9 N;;*(exp (-(people - 2)))/(people - 2))]
6 d+ `8 E/ d! u: z- i1 O
set k (k + 1)
0 s3 w0 V  q8 D. j]4 n) B7 ~8 h6 w- a
set j (j + 1)
4 H* E, D* m6 z1 T8 y7 S2 `]
. u! y9 d- [+ Yset note (note *(exp (- (1 / k)))/ k)) F* K" r0 A; C7 X' N* U
set credibility-list (replace-item i credibility-list note)$ A9 G; W9 N5 u3 ?
set i (i + 1)( D$ \) b/ ~. y! i
]* G- ?7 s! |) R3 v; H4 l! E( E, m
end$ o3 o- o- T: U5 W, C: i9 R& l

" v+ @! a5 |- q1 ~to update-global-reputation-list" c: A. _5 N# T3 D
let j 0
8 B! U) f7 n: y. lwhile[j < people]1 F2 n9 X9 Q  |5 R
[
) d. F. U& p+ @6 Q3 Mlet new 0
& f( J6 z$ m# }9 ^$ d;;
暂存新的一个全局声誉9 k; A* ?- T& K/ S1 W. D; \2 ?0 p4 g
let i 0
6 p5 A6 {0 V: ^) V' M% Nlet sum-money 0& z7 k/ e8 v% }; w  c, g3 q) o. l
let credibility-money 0
, a# V% \1 r& q' kwhile [i < people], ~7 N4 v7 U, p4 C( @
[5 P4 }( d. \1 R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 j+ h  ~) {( c1 q$ X- T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) a; a$ [: s0 f1 Y5 gset i (i + 1)
. U0 r% W( n+ j+ R]1 F) }3 o! Y( H7 C+ ^( \9 v5 o: k& x
let k 0" t% Y0 m0 x9 I- ?
let new1 05 T4 g  M. I' r" \; r
while [k < people]
& h" Z* W6 g/ C4 I, I3 @/ ?[* r9 O" l8 M  K
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)
, B8 Q; T- C% T' lset k (k + 1)
( o3 h4 U3 E! p, K7 m+ {8 r]4 D, B, Q& ~1 s7 ?& A. s% a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 S0 B' z7 f- N+ J% K9 j% z/ a$ B$ hset global-reputation-list (replace-item j global-reputation-list new)
+ A3 D# \+ C* d3 aset j (j + 1)
/ M7 [2 Z) \% T$ y]
' X2 a2 P) g3 Y9 q% rend( B; P" v8 i" z0 C9 z9 r
3 W! S; D, o1 F  U

3 J8 }1 y/ u1 H: _; h* `
  M9 p8 m' R) a) k# xto get-color
9 Q. S$ T: v/ m  B$ f; L9 V
3 U/ _: A  v- r2 m  iset color blue
0 Q8 z5 a" x, Q) v3 Z8 y6 i
end/ a4 B: o, z% p8 E5 s8 R
" w( w4 n  d8 `* i0 X  c; u$ C; V
to poll-class; ?3 L8 v6 D3 H% P, ]  o& J
end. I9 S; P, N, Q4 K& f% ^
6 Q. h5 O2 Y' M8 e$ U: G' E* ~
to setup-plot12 [3 E0 t% c0 g( ^+ ?3 ~! v7 L
# M' T5 D3 ~, J$ F2 q. i1 h3 w
set-current-plot "Trends-of-Local-reputation"
$ J) m5 F/ ^, A# l
3 o# E! f# t* D! d
set-plot-x-range 0 xmax

5 s5 }. ]9 X7 Y6 P! K$ [, E5 Q& g& b/ P. _3 r! o% L: r
set-plot-y-range 0.0 ymax

! N2 }9 z& k* h* o6 pend2 r2 y6 x! K& g$ y
: K) j, ]5 ?' T! i
to setup-plot2
+ {% ^2 K2 D: Y/ J- D* X/ G4 Z/ C$ z, M$ R  C
set-current-plot "Trends-of-global-reputation"
4 t" \/ X! [9 U- T8 R% s
* X+ ^0 m6 m# M. J0 `+ D: B' L
set-plot-x-range 0 xmax

8 k4 P+ ]4 Z0 r( d3 D0 P# z: i$ X: ?/ T2 F/ N
set-plot-y-range 0.0 ymax
& b2 O- l+ J1 r$ S! y3 b4 f! K2 U( i
end
  S  @" [+ e) k
3 O5 v' |* ]: q" I. uto setup-plot3, p% I2 a* T1 T( |: w

( ], d2 k3 u2 [( Dset-current-plot "Trends-of-credibility"
5 E! B' W; \/ Q$ d7 S' P

; X  E$ o, R# V' i6 kset-plot-x-range 0 xmax
1 d4 [/ e( z) k
2 X- ^( E/ ~5 m& C
set-plot-y-range 0.0 ymax
9 j$ j0 |0 L0 w3 f# D! N5 P
end! t; P; F# G% f# j/ w+ h) K0 h+ \
4 r$ v% @. p- F8 @& m
to do-plots
# k! c7 ]# v# \8 ^4 z7 Iset-current-plot "Trends-of-Local-reputation"
2 r8 i1 h& i: E8 H/ Kset-current-plot-pen "Honest service"
" ~3 n: Z) K: y' r' W3 h/ Rend% n3 z* B+ l. V8 ^% a+ M
+ ]! [; W  R8 }7 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.2 H# ^3 p0 `6 M: L* F8 [) `2 w

1 a) A7 R8 F  G3 ^* I7 R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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