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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:
, ?* T1 j. H1 N6 _8 }to do-business
) i; ~' x, U* `1 f. k; r+ e rt random 360+ ^# v5 d' W3 a5 `5 \0 P" \
fd 1
7 E6 m+ ^0 _1 x0 x0 u ifelse(other turtles-here != nobody)[
- C/ ~. `0 U7 W- t# z7 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.
( }0 C- E6 g0 x$ @9 n   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) @( X9 x& D9 ^4 r5 V( A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 q) S2 b3 l# S8 p9 ~
   set [trade-record-one-len] of self length [trade-record-one] of self
" S$ _+ W2 l# t4 `) W4 V  o   set trade-record-current( list (timer) (random money-upper-limit))
1 u1 L' b5 u$ \
0 s' z6 w$ K# ^$ S) M问题的提示如下:
, a. u6 y7 p! M# w) ?- }9 ]# V
4 Y/ ?" X' [6 `error while turtle 50 running OF in procedure DO-BUSINESS
% N8 K6 Y& _$ |! L/ k) I9 z* E  called by procedure GO
  y# x0 u  \6 }3 W' O4 J4 r# VOF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ R) X; B- b! h$ _% V) M
(halted running of go)1 d" d1 V$ A9 Z: E$ J
6 G% x7 w& |+ _* [, W( y! X6 A" n
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~~
8 Q% P1 b" h  R" f% s4 |) c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, L" E, J2 t  b/ r& i5 g
globals[
3 ^, R' K" y" F$ K& C0 nxmax
/ Z4 I2 S0 h5 s- O& O) oymax
& `' e* e& S, c  C' }9 ^) Cglobal-reputation-list5 G0 O. B* ]" L% D

) }& g' O3 c' W0 j9 Y;;
每一个turtle的全局声誉都存在此LIST
, B/ M% {' h0 Vcredibility-list" x1 e- ]% X/ i$ i3 m
;;
每一个turtle的评价可信度' E4 b; R& c" T- J
honest-service
' ^; ~9 {) u5 i) J6 ]unhonest-service
, {  ?! |3 v# C6 |0 j& toscillation0 x1 c" G0 @0 U* ]& ]
rand-dynamic$ u3 R+ P; K! k# r; }
]
) I9 ^, S& s* ]/ z& J, E
# f& |% S- t+ M1 Fturtles-own[
! v8 q# x, n: v. G; f4 utrade-record-all0 Z4 `. @' ~- F) C+ g2 x
;;a list of lists,
trade-record-one组成
+ y' k2 W( v! P: ktrade-record-one3 {- {7 l! d0 N, N% x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ L. C6 N2 n6 t$ U2 A% l* j

9 W! ~4 p3 X1 E;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
& o8 ~; a  t( O; W* y; Y/ d9 ]( ttrade-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]
. Y* ^1 K" r. Q4 rcredibility-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list1 _9 Z; n$ s9 d/ k2 R4 Y* T0 J
neighbor-total1 p5 j. C" k" n! y4 e+ [% u
;;
记录该turtle的邻居节点的数目" v5 y( U. m! C6 W* p
trade-time: H' t6 [/ s2 Z; O
;;
当前发生交易的turtle的交易时间$ U9 M$ q' f) @8 j1 f, p! _
appraise-give5 ]) Y; j$ J; N, S  @
;;
当前发生交易时给出的评价2 D5 M* ~+ ~  J, M) ~
appraise-receive
' D* W( k! J+ u$ a# Z;;
当前发生交易时收到的评价
- W9 c# n/ [& R# Bappraise-time+ w% R3 p$ i8 G/ J. u" M( e  B* k
;;
当前发生交易时的评价时间
& B6 J6 ]% p: w, H. a9 U+ Z! glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  a; E. Y- p3 K1 E/ S" {8 \
trade-times-total' e/ I2 h3 {" G
;;
与当前turtle的交易总次数
8 Q* F4 o: d% [. u& @& `2 k  Ctrade-money-total
; q+ s- ]' ]4 l. L) u  a;;
与当前turtle的交易总金额
, N7 F5 \1 t6 a4 @: Blocal-reputation* |* F! ?. ^9 [: |) Q  ^
global-reputation  V( m; d! ?  O. [6 m4 A9 N
credibility
$ O; M9 Q) z- N% Z$ z# {1 ~' _;;
评价可信度,每次交易后都需要更新
' q* p8 A  B) O' ~2 G/ gcredibility-all
. A3 ~; U4 s! o3 C2 ^& Q;;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0 D  Q3 i; O. ?

8 Y! e- H% J5 k! F$ D  |8 S' K;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
5 w5 i" h: c. g: Y* m# `& _credibility-one
" C  K4 ^9 H- i) A; b;;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
( [! x/ m0 H$ S3 ]) h7 Sglobal-proportion
* L8 Z9 m& G; `/ N# icustomer0 l0 s* l$ n  e$ i
customer-no  r3 g0 D0 ]6 ^4 h0 P5 N  t2 p
trust-ok3 r& B6 b/ T0 _0 Q. a
trade-record-one-len;;trade-record-one的长度$ S- ^* K! B% g8 o! t4 ?( D$ r* O) a: N# w
]/ f9 e* P. V1 E# u" @
6 f7 j1 O# B3 h! z
;;setup procedure- o& P: q3 Y" P, u) Z
3 \; I1 _/ T' S9 Z
to setup
* y2 ^  u7 ?& E: t4 B- e- R5 a1 j& J4 Z
ca

$ W  w) p( E* y
- ?, r* ~7 `6 A2 k5 Sinitialize-settings
" F% a4 }, N7 I0 g- z

  Y+ D/ H0 a+ M9 c( y0 u" D3 }; Zcrt people [setup-turtles]
, }" M0 u" \! i  b) a' o

% W) n5 N0 Q+ _9 Q; V/ h: Oreset-timer
: w# E0 X; ^+ }. @6 y* ~4 W- F
2 @) z& b# o$ z- C) l) ~. w3 p
poll-class

5 ^( ?6 Q4 d0 F; a- s4 ]
. B8 l  O0 ]' C9 w/ M3 [1 Isetup-plots

" M- l8 Q6 ]" J+ Y% U& S7 S
9 A% }) ?! p! _- m7 I' s8 X/ |2 Fdo-plots

4 m: [0 s8 y& V1 eend3 H4 \# p! V3 H9 z
. p8 p, [: _1 G
to initialize-settings
6 f) p, a$ T# S. U+ l. D; `5 j! r, w+ \4 v3 `' W  }
set global-reputation-list []

8 U8 k; t7 a; B" N* y+ B/ o) [5 t7 M4 m- t6 s  i
set credibility-list n-values people [0.5]
/ A8 |! X  w: `  j

* f/ p; b0 {4 f$ B* I' qset honest-service 0
' F! C. j8 y( [" B( n/ V" s

! f$ x1 J* r, b' k' Z4 gset unhonest-service 0
& C" V! p9 E9 _2 j7 C4 V

( }+ V2 m. k+ B. R/ Xset oscillation 0

+ n* X" P, }, Q  [9 Q' b7 F2 R/ k6 D3 X2 B. C
set rand-dynamic 0
: H8 E0 u5 j7 C+ I) t7 N# b
end% X) g9 _/ b# o7 E5 k

" A; Q: a8 Z) G4 o1 [  g, [/ xto setup-turtles 5 y! k1 I4 E5 }$ c6 _4 I3 y
set shape "person": _$ i- Y, D8 d" J
setxy random-xcor random-ycor
% O. w) m" C) M$ ]1 w$ C6 G; yset trade-record-one []
% m! ^4 _. [- L- j& F5 F, `- h3 C
; n: W+ U( Y8 s, p, W7 H# ?, d# \2 V
set trade-record-all n-values people [(list (? + 1) 0 0)] - ^$ K9 N0 m' g) T

( e. E+ s( A8 Z7 W$ ^set trade-record-current []+ M* W7 i% X, [# E
set credibility-receive []
% g$ h9 [6 {2 t+ Jset local-reputation 0.5
, j6 }0 D, P' f, b# A6 Eset neighbor-total 0
4 l. ^* o) S+ I1 b5 e+ C& V5 H: O3 T& C3 Kset trade-times-total 0
7 a) h$ k* n4 U' G3 ~: j0 J$ N; |set trade-money-total 01 Q! s& D5 E8 M3 @
set customer nobody
2 R1 A% ]. a6 U. H$ _set credibility-all n-values people [creat-credibility]
. k) ~7 @0 ?# S0 A% Aset credibility n-values people [-1]
: U9 \6 ^# a# B9 E3 \; p; Vget-color+ v/ e! S% T! [+ ?' d; B; m" E+ t

* s; h' u: u1 q$ x% j, F3 d  F! K( p0 pend) }# f1 H* j! J, e8 t

& O/ q' q! w; S8 ~2 Rto-report creat-credibility4 @5 w1 [- |2 k' X; P& O
report n-values people [0.5]5 e6 }' V9 F, d8 x8 c  T
end
6 V, `$ ?# _4 ~' P
) E2 {( e7 v1 V# kto setup-plots
! ~' C! }) }. k" K
! Y2 A$ i7 F! {# f* |0 rset xmax 30

& S4 g6 ^' d/ L( U3 B4 o7 H% x% s. j3 w
set ymax 1.0

4 V; ]# ]( a3 B0 B8 u
- o- {2 X1 m5 ?9 s0 O$ m7 l/ g# N9 Cclear-all-plots
* m: }2 j3 @, |% j

+ L; f/ \9 Q) Y/ f1 `" x# W5 _  Hsetup-plot1

3 i. x5 F9 k: F4 K8 s- N& D5 B5 G* X! `% w/ C# N7 k- c2 _
setup-plot2

2 b- ~- o! [& W# j6 m5 m+ ]$ R6 L$ l+ B
setup-plot3

/ w- m3 q! g2 f# b& l; v0 n. Kend
% g1 V, Z5 C6 j4 I9 v
0 Q4 t4 o5 u) P: d7 [. }" U;;run time procedures4 F/ c3 {. N6 l; v
7 O7 m8 X. C$ S/ B0 Z# j
to go3 i0 i& x) D/ y& V4 i# U3 z
1 U) C6 e# V0 P2 H1 V! b+ w
ask turtles [do-business]
/ c) T; D% n$ V4 ~( N% N1 L
end
; u( n/ ?6 m. N1 b: g) O5 v* \$ m* K0 o/ ~5 e
to do-business ! b2 U- p  Q) W( l/ K4 F, e$ p
' H  i' V# c. J: U3 q
# F! Y. _* r1 s3 N
rt random 360
7 m- ^3 f: u- I) P- y
) B  N) o" q' f. L" s3 Q
fd 1

" Q7 e1 V) ]9 S2 d0 h. D. m; X5 ?% O1 n* Q( _% O
ifelse(other turtles-here != nobody)[
# T$ D; G) i& X( W

4 V" u: Z' K2 u) Cset customer one-of other turtles-here
( G( C# J/ k5 ]6 a2 t

' f* h9 [: c8 s$ R+ ^  D; h;; set [customer] of customer myself
, K. a7 O# a  B3 l/ w. u0 ]

0 r% U" @' a1 _! Fset [trade-record-one] of self item (([who] of customer) - 1)4 W0 _5 W3 O( D/ N
[trade-record-all]of self
/ F3 [1 E! Y& \& V  z$ L7 G;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ p1 u2 r- i, P6 k6 Q2 z" s6 t* X5 C6 O! f8 |" v3 F6 A; l
set [trade-record-one] of customer item (([who] of self) - 1)
! c* z: F- g' t5 u8 K3 C[trade-record-all]of customer
* N- |' t) u  a0 u
" [- T8 V0 q! i! Z  I  P
set [trade-record-one-len] of self length [trade-record-one] of self

5 y6 {5 V" d9 K! i% T: C# Y
0 [0 i5 S# `3 Y- A# I; H2 Gset trade-record-current( list (timer) (random money-upper-limit))

- T& b* M& y0 _# ]4 z/ \5 l6 f5 ~+ A: _- l* ?  ]; T) N
ask self [do-trust]
& i- w6 @' E) i9 D;;
先求ij的信任度
$ f" O5 E+ ~6 b( W6 w1 u4 I+ L) Z1 E7 v' N. d
if ([trust-ok] of self)
* X# `, N6 I1 C( |9 y;;
根据ij的信任度来决定是否与j进行交易[
% |& U" v) [( r0 P; p& oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, l8 A# b- a9 K& m. D( L: H- N5 O) d& b7 L* q# W
[
. S7 @2 ^' N; N5 y0 ?

. G4 K  e( N, ~- L( V- Wdo-trade
, _5 j3 @3 l7 |* O' e
$ b. ^9 X- s% r4 ~
update-credibility-ijl

% w2 W3 ^/ o) k! K) R$ }# D6 v( k6 A) t& Q
update-credibility-list0 O0 Z6 B/ L" r# }
! ~; p- B$ N  c2 \0 w4 a* M1 N4 C
1 c: W0 o0 L% e. Z0 [6 E( W
update-global-reputation-list

  y3 w$ S6 E! V/ Q! e
" G. j( b* y* w4 s' m& ]  m3 bpoll-class
% \. z6 Z+ k: i; C! k( I' b' ^3 b1 R
/ [4 R- H( {3 |" P8 `
get-color
4 O. v0 N, m! ~# f% y

% ~+ \  a, q8 e" ?]]
$ A" a1 N2 g1 e5 D. p$ f1 H( q" n$ m* H$ ~; d' X2 d2 I" |" u7 D
;;
如果所得的信任度满足条件,则进行交易% ]6 ]! F) y" F& Q1 L  j% j

7 v. F- Z8 N9 S% a$ q. |# t[

( a# o" o+ ]6 n) J5 d$ L
2 K& d5 {6 n  X# |- E6 xrt random 360

" Q$ W: {9 _; G0 h$ P/ Q
0 m7 u4 b/ v+ u+ ~$ W9 hfd 1

. Z4 Z0 o" \) G7 Z+ b3 Y8 y; j4 `, ]
]

2 V% Z) r7 r- Q4 W: F! ]2 ^
. _/ f: D, ]7 d# Tend
0 X4 |( S! H7 s" N  c+ S$ Z1 d9 W/ d1 r

6 n% h. Q, p# B  eto do-trust 4 u+ X0 l" M) m* u: a" e
set trust-ok False
* p7 y# c- k& p" v! W& V& O: d( B* B6 _0 C7 {+ e  Z/ Z
- f8 X  u; i. Z
let max-trade-times 03 ^4 n/ k$ e' g% _/ W) P# ?. @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. N8 A- x4 g* _1 o( m
let max-trade-money 0
/ x3 [8 X0 e/ J+ U& y& @) u! S, lforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 F$ E: v9 v- F# S/ ^( }: flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 H/ ]6 ], U/ z% C' W
( f2 e6 Q5 B% ^0 W# k: O

0 ^* {* H8 V7 o+ i5 jget-global-proportion
- p8 M0 O# d& ~5 e7 d2 W3 i; ?let trust-value
* @% a) {( [4 S! e. o  }& e! T+ U! k9 plocal-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 D; x, n; ~: a4 Y( d% X
if(trust-value > trade-trust-value)
( W& F" \' O0 \/ L- E[set trust-ok true]
& V. w3 ^: z: X: J/ v0 rend
- l5 F7 F3 z* P! x) s8 m. Q) x
to get-global-proportion# ^1 ]1 }, j4 F0 Q! b/ `
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. D: `9 z+ S/ V: e8 W9 n6 d[set global-proportion 0]
8 x0 K  p; v2 ^[let i 0
) v5 ]- N& W. m1 ^: V  t0 }' p$ {let sum-money 09 O& W- p* {: e2 y8 v
while[ i < people]5 d& G5 B$ a8 \9 \% a
[* E' V: ~' i+ k" w; E$ s# }2 }, }' V
if( length (item i
# y4 b9 J1 E3 z3 K3 d; C[trade-record-all] of customer) > 3 )

9 \. a6 S2 ^) ?" m[
5 Q4 s2 B2 f6 M+ t$ T9 e8 }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ }- {' n; \; D' \3 u9 ^], V  x! L& e! B7 N3 h
]
& f7 F! _9 q, T  Z! Rlet j 0
& w; f4 w; Q/ N0 ]let note 0) @1 V6 p5 `5 H3 a
while[ j < people]$ a/ b0 k7 k# G+ R+ F7 H8 t
[
7 j$ i0 I$ N! a# _9 P5 Qif( length (item i% y: G6 Y9 b; g7 j
[trade-record-all] of customer) > 3 )
/ U6 M  N8 I$ Q3 |- @
[
; m* g4 O$ Y" X6 ]6 ~" aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)/ I1 k, i& Q: d& ]% j5 _
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 A' m6 F5 z" b1 P/ h[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" Q/ R% T% K& m( v# f
]5 t& B  ?- O" i+ N5 B# Y+ Z
]: Y) [. R; N$ W- ?- [6 E& V+ P
set global-proportion note
6 c' R- H9 N* ]& p! z]
( e' }1 X$ O; ?2 Q6 hend% A/ |* n0 R6 x5 Z
/ C7 G8 b0 V9 H" x. V
to do-trade
- u; Q( |0 r- Q, t/ k;;
这个过程实际上是给双方作出评价的过程
% d! {1 `- }( F, R& ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: K! j# r1 r  z- f: ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 l7 J% v5 D5 `( G0 u# ^6 V
set trade-record-current lput(timer) trade-record-current' R4 e( i  k! D: I5 o
;;
评价时间
6 k0 x4 l2 |4 ~& e# Z: task myself [
( O2 }3 D) \+ G8 ^update-local-reputation
, M# V$ c$ Z5 B8 [  h& Oset trade-record-current lput([local-reputation] of myself) trade-record-current
# B: w$ n  H1 {6 U/ U- W3 R# X]9 }# f* n" ^( {2 M5 r
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 u8 ^% k' S! i+ c9 O; q- A0 i. U* b6 S. y
;;
将此次交易的记录加入到trade-record-one
, T5 b, P3 b. m5 A/ Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ r5 a3 c& u. f" n! {; I7 q4 h3 nlet note (item 2 trade-record-current )3 B  D0 N8 u5 b8 M& f. z1 K" {
set trade-record-current5 D- r! [' c! s' W* D1 c
(replace-item 2 trade-record-current (item 3 trade-record-current))

& D2 B& A& c* q5 _7 e, `/ J& yset trade-record-current
& A9 K- m7 k7 ?(replace-item 3 trade-record-current note)
7 x$ }" n4 n& Y" a* w- k7 B! P4 J( k3 O! L( C( @1 `% Y/ c) W. n
* v! L' r1 L* |6 x
ask customer [4 w$ V& ]7 Y" L% @# s
update-local-reputation
1 o+ c2 c# r/ v( C7 d7 c0 y0 H4 v0 @set trade-record-current6 u& `7 d8 x+ O, x& I  |+ U
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 C1 y+ F# l( u) f9 K$ v4 h2 b]
& A1 N" n1 [; s6 B" q5 }+ j
( T& n% Y3 b2 i, q, Y$ R  g5 m* x

% Z+ R  r) `( U2 g: X1 Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 b( c( a, Q5 m2 L7 K( I# j6 U
! g/ c6 y  U. W/ n) H
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 a( S% u4 [% @) U- S
;;
将此次交易的记录加入到customertrade-record-all- ]# u' C  R  \" j/ Z: Z
end. o% G+ U' ?# [) E4 M
9 d1 ?6 T' K" l* X' D" b8 R
to update-local-reputation
* R* E" C/ C/ h. [7 s. ?" ^2 cset [trade-record-one-len] of myself length [trade-record-one] of myself! a6 N9 }/ X) B, I

5 z9 N9 n# N: H2 x
# D2 o( P1 P2 O- X2 r$ l! x- r/ n! E, p3 X;;if [trade-record-one-len] of myself > 3
! X! S! Z/ J3 I
update-neighbor-total: E6 e% ?* ^( Y3 Q
;;
更新邻居节点的数目,在此进行: l' B! h' _+ }
let i 3
$ L+ J% i4 M- ~( M/ u& llet sum-time 0
- Y, |5 A2 M: j9 o& Fwhile[i < [trade-record-one-len] of myself]( v% {, C* P, C
[( x2 ^: F, Z5 y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! X7 I, Q2 B& D* L6 nset i
5 T6 C: t3 b0 K. ~8 F1 g( i + 1)
% R6 B7 S. x( ~% {& r5 q/ t1 b
]; y7 i  o5 h+ s( O$ z1 U
let j 3
& D) m7 b8 i' ]$ i* O. B9 B9 \let sum-money 0
. ^4 i$ X. l" I# hwhile[j < [trade-record-one-len] of myself]
8 a# U! t- ~6 s$ n0 b! }[* W8 h7 o: }1 s
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)
7 S# i+ ~# ~$ A5 L* Q3 Iset j
3 a) ], Q' b- S. w  t& Q3 A2 M  t( j + 1)

" M  }4 o! m$ n* u/ i9 O0 J# O4 R]3 l' r8 P5 U7 }6 ?
let k 3+ O# b- q( P. a  j
let power 0
% }- X; g% t. U/ l; a* Alet local 0
. W: n! @+ v6 N7 t; N2 fwhile [k <[trade-record-one-len] of myself]
7 x4 b9 w+ }! K1 z[+ p0 X: y7 V$ i  W: _7 t& B4 x% L, 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) 4 P; L' b: [& ~& [
set k (k + 1)
* k' T4 W( Y$ S. }* n, O]
6 v. H- ?5 j9 k2 @2 Wset [local-reputation] of myself (local)0 Q$ s: Z/ J5 p
end. y) k, @2 }5 q5 f8 W; d
# K4 e3 e0 c4 _! n) t+ d4 q* B( }# I
to update-neighbor-total
0 H0 D0 o4 U" d. o1 S% ~, I4 _6 Q
9 M5 i2 g( C( G- Z* Jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& X% u3 F8 I; V0 d' Y5 D. y4 h. @' @- P; s
" D2 |; K% K" V) T
end
$ z0 [* y) P6 K1 u% o; `  |
0 N, K' r- \+ y2 c; T' a3 sto update-credibility-ijl $ D. Q" @& T  ^

2 K) i' `8 c% W4 _;;
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。* {$ \$ j: g, y, t- n# [5 K
let l 0( w( b' w5 H% Y5 X
while[ l < people ]% M" Z- l4 T; _7 r7 A7 x
;;
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
# m$ B- M4 m" E/ i) \0 O[
+ B- Q4 O( e7 l% ~" E8 g7 {. b7 blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  _! h, R/ R! `* W5 D5 B' [9 y, G* l- m
if (trade-record-one-j-l-len > 3)! c, Z0 E. K9 n4 y
[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
: Q* |7 x. w, @9 h" w. P  U! n9 Zlet i 30 w3 m) e7 g* o1 i% \# C
let sum-time 0! }$ v$ e( c+ C, D7 y
while[i < trade-record-one-len]
" p" [$ E8 A; R; _- G% m6 Y: L[3 [: x( @: V- Y7 ~' b7 J" K; J
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# o  d' E2 `0 B' Sset i
$ l" Y* x7 @. t% ?7 B) @$ s( i + 1)
8 T1 o7 g5 A9 k$ ~  h  K, i  X% |) b
]
5 x# A2 N3 M5 x: }' Wlet credibility-i-j-l 0
8 X' I- |: ?* j6 i1 f: };;i
评价(jjl的评价)
  ]0 e, m9 c' X8 \# y: i8 F% F* zlet j 3
, b. S% m9 F* wlet k 4# L5 D+ {. f# R- i' C
while[j < trade-record-one-len]
" |. ?" ]! k5 n) @, O1 ^[& O! w: Z. z4 V+ W  ^  T3 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4 U1 q; L' Q$ d4 z
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)
$ ^* r: |$ u9 S4 C3 ?8 hset j
; v' M$ D% F+ E5 I% W- X( j + 1)
& N( h, J, d0 k0 z. u$ X* W: \' Y7 `
]2 z9 r0 E( R  M. [( p9 f
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 ))
0 d3 O0 C  J6 E0 Z6 H# Y  g" d! o8 Z; p4 C3 _% C" a

6 b9 D' g) ~$ {( R- A* z1 r; E' O* a: alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. _# [6 V5 r# ?- X7 s1 l+ T;;
及时更新il的评价质量的评价5 K. S, i8 k+ o2 j, @$ A
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! h, A7 F: Q# d, Bset l (l + 1)
# G" ^& M; m) C]
) H, _; }5 Z8 D% F% y$ D# Pend( P0 h. a5 h3 @' f) x5 t. r5 o5 L. E/ e
7 p. y) \% r: c
to update-credibility-list8 N/ {* J5 n) Z
let i 0
: X1 f8 U& T+ O5 Wwhile[i < people]
  s. T! {; K. A4 G- G5 f: t7 ~[6 q0 |& Y, D/ a6 T" L* I2 `
let j 08 n9 Y+ X: A4 Y" f1 C' _& M
let note 0
" o- m3 `2 S& m. J7 w4 n6 r" P0 N  Olet k 0
: k9 g2 l! J6 e+ e;;
计作出过评价的邻居节点的数目
7 V: Z( W5 r( ?* `" U* f- _+ s) H* Cwhile[j < people]
7 K/ N4 o  j8 J# j[
8 G9 ^7 D) R/ U0 s7 S/ q$ [0 s. _$ Pif (item j( [credibility] of turtle (i + 1)) != -1)6 ?; s. W9 W" j
;;
判断是否给本turtle的评价质量做出过评价的节点- s( G2 l4 }3 S9 U! z4 f" B
[set note (note + item j ([credibility]of turtle (i + 1)))
1 i/ t" b5 K1 W1 S9 s' F) q/ k;;*(exp (-(people - 2)))/(people - 2))]

4 k' o( U7 x3 mset k (k + 1); C" X  R$ q0 u# d+ l! i. C
]
8 t3 k; z+ n& G1 bset j (j + 1)" c. a9 w& ]/ m
]
2 c6 K3 h$ L4 T: s- Zset note (note *(exp (- (1 / k)))/ k)
# c! [( r" w/ x; A6 Zset credibility-list (replace-item i credibility-list note)& W& x1 q' k; g: ~& B
set i (i + 1)
- s( d4 U! G' D& z+ _+ a]' I: n! ?6 p  L% ~, c0 J/ F% \
end
/ i; b( t- J- d: j6 H) l
, N$ Z6 g# Z& E' W) P6 r3 kto update-global-reputation-list
! }% L* m/ M1 ylet j 0+ b+ v/ T, \+ z* x! ?+ @7 F
while[j < people]
$ b7 [$ ]1 I* L6 H6 R[
) Y9 A, Q  g! Y' Q5 Q& @let new 0; G+ ]2 z7 m) b4 e3 q  Q" E
;;
暂存新的一个全局声誉
: n! {/ ]& a' Vlet i 0: V7 a) u, v. T% ]5 f
let sum-money 0
$ e4 h: Z, }3 E, p3 d$ X9 Flet credibility-money 0: M) H5 Q, @1 s
while [i < people]! ^: M' E6 _2 z8 C8 Z3 r1 P
[. E0 q/ e( B; {, U* ^- ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ D+ f/ b# l$ A* ?0 Fset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  z2 y, }: T: c7 W2 _, dset i (i + 1)) e8 s1 U, E1 M! o. C5 ?- U
]
/ M, w! o  G1 e2 g) Q/ }2 clet k 0' }* B5 ~# O8 N
let new1 0
( i: P$ j! L: X9 ?: @while [k < people]
6 \+ q( c) k3 _3 Z[) b& a( z( [. e' X$ U
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)& ]7 T7 G7 d5 g
set k (k + 1)8 Y4 K5 \. r3 `& e
]+ ^1 h, i$ z, K$ ?0 @
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ J! I2 l% B9 i6 d4 X( sset global-reputation-list (replace-item j global-reputation-list new)
; _: H& x$ D$ u& k9 nset j (j + 1)8 {' O  p+ X5 k( k$ r+ f4 w  f
]9 ~. N  d; ]0 E2 E. q/ ^
end
) s' O! f- H* t# ]1 d* s) z8 {. H
/ Y# C* E( I5 k5 `' U8 k2 ^/ T9 Q1 M- e# w( h) Z

6 @* ~- P( _) u0 S5 b+ x+ ?* ato get-color0 W. Q& x) A- e

, s5 F+ Y# z- Z+ ?6 @set color blue

5 \9 U7 D4 d! |1 x% _' P7 zend
4 i; n0 ^6 y% u4 F
8 b, D# d4 `$ B5 P7 E3 jto poll-class
3 ^7 I5 n' R3 Q9 j# c% j) Z* Qend
/ }9 _& s7 o& I. Z. w, d
) _1 w. @0 s/ t; h4 y* p/ Zto setup-plot1
2 ]! O. W5 Z7 R) p* A' ?! X* \, u! w  w: J# o/ K# W7 U
set-current-plot "Trends-of-Local-reputation"

9 A/ [. @; z2 ?& e/ f. c) m6 F% Z2 P9 J) k* ^0 R
set-plot-x-range 0 xmax
( d( O7 H# l' x' R- x
' l' E6 |/ W8 ~8 c- K' P* w
set-plot-y-range 0.0 ymax

' A6 b4 {' e9 T$ Vend
, ]! c) s& H! C
: l9 S6 U9 S; f4 x9 S! d- j5 Kto setup-plot2
, |! h9 @/ m" A: v* n* l* T2 V& O; A) G( y3 K/ O! o* f/ P
set-current-plot "Trends-of-global-reputation"

" f, L4 a# w; r
) d  W( S3 z' l& wset-plot-x-range 0 xmax
. A( a( v# }# D( c( g* }
; A) x  c; |9 x8 a
set-plot-y-range 0.0 ymax
5 t! p6 n7 W# \6 l6 w
end0 T  l, ^* m0 n6 a

& D& B+ \0 K0 C( ~4 V3 f  P. X9 Rto setup-plot3
% d1 H6 |  A- x
- I) s1 s+ H) Z# W* Q3 h; X) tset-current-plot "Trends-of-credibility"

/ ?" P% o- A$ A+ ?$ s( l& L+ w- O) e* c9 n7 q
set-plot-x-range 0 xmax

' u4 Q+ R* J) d" O7 G' |4 B: f
4 h" F' d1 h' j  V! pset-plot-y-range 0.0 ymax

; P2 [4 @% Y9 eend, V9 @1 G% v: I3 u3 [# ]6 m

) v4 C& u3 e! n- h6 m+ U5 ]% Lto do-plots# v: j1 R' M+ o6 F; B( f
set-current-plot "Trends-of-Local-reputation"
3 N, g: x) S1 Z% s, E2 Pset-current-plot-pen "Honest service"
3 v0 Q4 s4 p) |end8 p8 F- A- O9 R% s7 {
4 U' R! d* D* I
[ 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.$ V5 G% ?" j2 i! x
9 ?# O7 _0 c5 w) g
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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