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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:
) X& K1 z& D9 s8 F2 {! O. Kto do-business
' F  W: }, y! T1 \, l rt random 360
* M, ]6 x$ S' J8 } fd 1
3 e0 W6 x) b) x- [ ifelse(other turtles-here != nobody)[
! {  a9 g4 ^! z8 ?9 q) o2 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.0 B) L0 C3 K4 [! l9 X5 {
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / g" h) A2 ^2 ]$ x& a! h; i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 F+ C" s/ K3 Y+ `
   set [trade-record-one-len] of self length [trade-record-one] of self  V: K: W: _- i. g9 J% B9 i; I6 \
   set trade-record-current( list (timer) (random money-upper-limit))9 o! y+ S# h9 a9 |
! c3 |; i2 B: z( q) f7 O" ~
问题的提示如下:
, ^0 O: w% X4 k, x' i$ J9 p
% d6 M; u) P+ o% M# \1 \% Berror while turtle 50 running OF in procedure DO-BUSINESS
! u7 |  |! j  W7 h2 G+ e7 U  called by procedure GO
: H7 p% f. L5 f' J' D0 k7 HOF expected input to be a turtle agentset or turtle but got NOBODY instead.' N! I$ J3 I. O- E- A
(halted running of go)3 ^% p1 c+ R5 Q# G3 f9 x
1 @' f' b& S  x
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~~
4 }6 f! E8 f5 m- D6 d1 Q; T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
9 N6 Z+ H. z8 b' t; ~globals[3 B. Q. j' ]! d: x  X# I5 S1 Z
xmax/ _/ z# H, q- H7 ?) N( d
ymax
; P# H6 U+ Y" p, n; Zglobal-reputation-list
# Z3 h; j5 _8 h' b" U& {& ~3 s- o& L! f/ Y
;;
每一个turtle的全局声誉都存在此LIST中
: ~; P+ j6 O5 J6 b* V9 Bcredibility-list) v4 F) x* Z+ J3 ~8 ]
;;
每一个turtle的评价可信度
! W3 U4 U" j5 K6 `% B" n2 d+ v" L* Y; Yhonest-service! W$ Y5 B7 U  L) m  I3 F
unhonest-service( Q1 O! v* {, O. q: W& v' ]
oscillation
: N; q$ `0 l0 n2 @6 ~+ Lrand-dynamic, Q' Q7 g0 G1 r: C7 |% Q
]
, n+ O" l$ v, j: \3 I6 I; G3 m
; h2 R+ j% m. ?1 k% |turtles-own[/ V) [. I7 G3 F. F1 a: _5 V3 O
trade-record-all/ d& T) l! ?% X4 }" n/ i9 [
;;a list of lists,
由trade-record-one组成
1 k+ k% k5 X: w* Y  V2 `1 qtrade-record-one( r7 r+ H4 r( J! ]/ Z* a
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 C9 y4 g6 w5 L+ j
8 L1 q; J2 p3 m% ?# d# 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]]  Q9 T1 c: C3 y* j- ]
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]' ]( M6 P2 F$ G4 Q; c- ?% p- j
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
7 y% D  U& Z4 dneighbor-total; `* ~2 e* P/ u6 v8 c* V$ b
;;
记录该turtle的邻居节点的数目+ T. C7 K' L$ ]! l8 [- ]
trade-time
1 I  F9 l" ~- c2 Z" f- b! Y;;
当前发生交易的turtle的交易时间
) \) V* Z% B/ p5 E2 H9 Vappraise-give
" F4 L& T" v% h( e. p% Q4 r8 s2 W( ^;;
当前发生交易时给出的评价
" e6 _- [9 u& O! V( Nappraise-receive. m. _: [+ x& ~# L
;;
当前发生交易时收到的评价
7 w8 b; s/ K* Xappraise-time8 }1 H7 a& K) z
;;
当前发生交易时的评价时间
- o. k1 T2 L# R5 q. t( w) elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉0 I1 ]8 I9 R1 _/ A
trade-times-total
) f* X; F( @* n0 F7 E% ~. w;;
与当前turtle的交易总次数
, O  q: ~8 A6 {2 K8 \/ ttrade-money-total
8 t6 L$ q) o% p8 q$ O+ S6 e;;
与当前turtle的交易总金额" R# Z1 [+ U; H' K
local-reputation) o  s  D: A* ]* a9 ^
global-reputation
. c; F, Q) W8 g+ ?9 kcredibility2 Q% z3 k( f! H- k8 O9 V
;;
评价可信度,每次交易后都需要更新3 H$ r: m4 q" v$ X! j
credibility-all
# ^% d' J" D* L3 t9 E4 l" I;;a list of lists,
由credibility-one组成。[[1对j的评价质量的评价][2对j的评价质量的评价]……[i对j的评价质量的评价]……],其中一共有people项,根据
7 ?* s! X# h* b5 g7 s' Q3 K+ ?& m; j- y" I8 l3 K7 E1 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0.5
8 K$ ]9 M# j/ ?1 B4 pcredibility-one
9 B, ~8 Z* r5 e6 E- Y  f" Q;;a list [i
对j给1的评价的质量评价,i对j给2的评价的质量评价……],其中一共有people项
! A1 Q6 t4 ~' x2 w) J, n$ W. aglobal-proportion
: O9 ?' l5 O: \1 Tcustomer
3 p7 ?* f/ _5 M. N' icustomer-no7 Z, Y4 a3 V+ i# Y0 B  H
trust-ok8 I/ W" v# w' E) a! m$ m
trade-record-one-len;;trade-record-one的长度
. @; u# n& R9 Z4 O5 z3 L$ ~, r]
$ l+ {6 i* A2 [8 j  D% H! V! v* O) L1 V
;;setup procedure; {1 b4 M  c7 W8 |' `; L5 L
" T$ q" I5 x/ P. M, ^/ N
to setup
" B9 a8 J  N, a" P0 C
: w# g: u/ ?3 D# [ca

; Y/ |# r6 G$ `. Q$ X  G6 }! ^# }+ p8 Q+ z1 W8 S
initialize-settings

6 Z1 y/ ]) R2 w9 B5 H% b4 u( H0 I1 U, L# g6 w/ X7 e0 a4 x8 [
crt people [setup-turtles]
- h: U- L! r2 m8 k+ ^
" B8 f% \/ {- F8 s
reset-timer

0 ~; u& q4 Q" [% _  w
9 P/ H9 b: k5 a$ o8 A, z! f$ y  ?poll-class
% U8 ]- d. j, h

/ ]$ Q; T' A3 j. C( D  ]setup-plots
5 @$ t1 z. v/ A

) C9 t3 s6 N0 xdo-plots

' u5 r9 Q& c- Y6 |& @3 ?% B: _end
; N9 T& z& f1 f0 i% M
( k# J: e9 {  K& Jto initialize-settings2 x0 N7 {7 v# D  ]& u2 X
" V& b0 R: N2 F- l
set global-reputation-list []
2 ]: T0 T! d0 q9 ~1 z6 n& O1 i: N! o
& G* B. y9 E8 C7 x
set credibility-list n-values people [0.5]

* ^$ ~" E9 B$ x# N3 u, ^
, E) ^% t; J% P8 hset honest-service 0
) N" w) p3 {" {* x
# y( k6 a9 m* f- t1 R7 w8 Q
set unhonest-service 0

4 n; ^- ?$ a1 M% s0 J  d
# H+ s7 K# T0 L9 L9 P8 I0 Pset oscillation 0
, |% V+ ~3 a& j0 y
3 H# z" M; x. M. [
set rand-dynamic 0

" U* F$ N  L4 Z% |( p5 Mend
. e6 J' j0 i: L& o% M- p0 w! `
4 I) v5 \* S1 s; r$ C# rto setup-turtles   s- v/ W3 N7 e9 j1 z
set shape "person"
1 p3 i; L7 U9 `# n( _7 ksetxy random-xcor random-ycor" c/ @! \4 x0 D# ^
set trade-record-one []* U( o# W. l  s, i
/ V5 ^0 C0 d0 a' l7 X0 }
set trade-record-all n-values people [(list (? + 1) 0 0)] , ]/ w8 U" Y1 G6 J( |* I' b

) r: c2 ^, y+ o/ U4 C' mset trade-record-current []* @# N5 \) E9 [1 G  G' ?# z
set credibility-receive []0 Y% L' I9 `8 g- P
set local-reputation 0.5
/ Z$ H/ U/ i& Z7 R) {6 U- _) b; Gset neighbor-total 0; ^* u5 L8 l- J# S$ P) I, N1 }9 W
set trade-times-total 0
2 Z& ?7 \1 l; Nset trade-money-total 0+ O6 x. J* V" P6 m( \) i/ x4 k
set customer nobody
6 U9 H2 G2 W3 P9 w/ S, Vset credibility-all n-values people [creat-credibility]8 J. E' \, X1 L* M$ j1 O. L  B$ k
set credibility n-values people [-1]
; |3 ?% U* M+ b& l+ G5 gget-color
6 ?. x1 j( M# }3 F( Q+ T! ^

" ]# y8 J  g0 z8 Cend
+ v5 J. m0 V  g' f
) W5 B$ s8 B0 E* v( S6 \  @# nto-report creat-credibility: s6 Y4 q9 |. `
report n-values people [0.5]
0 _% d8 A+ U! {3 }end
$ |- C# G3 U7 N' b' J/ L) `2 X4 B
3 z0 b% a6 e& oto setup-plots: I: T: B& U8 D: Y
$ K2 p  w& `, x7 Q
set xmax 30
4 y7 ^& |8 B* |( l& Y

: ]% q* b& l. P8 j: d+ |& F- S3 uset ymax 1.0

0 y0 C3 T9 d% a2 N5 O4 R/ M1 N! P: b! K4 F% x2 w0 Z$ Q
clear-all-plots
( s$ C2 t7 p; x" W7 Q$ q/ Q

" i3 R* L+ Y- c4 N& g* Vsetup-plot1

8 z* w* m2 n& `" i2 k4 x- {
) J" f9 Q: \$ c6 |9 e) Z2 osetup-plot2

$ }3 m- h' W- o$ v/ C3 [, @2 k9 F6 A$ _
setup-plot3
1 @% o  m, I1 n8 P+ g
end
& {# W% m* O3 E4 v* X# P& P2 t! w  ~# \
;;run time procedures; L( r! N7 t9 o, M  @
( B! }! f/ U2 C* V
to go3 i: u% o  w3 X
$ P% U& x/ R, O! x8 J6 d
ask turtles [do-business]
- N. S" |, E; C- j* d/ n
end7 ]1 @+ ?4 R" ^
3 h& o' k3 w" o* {- b% ~
to do-business
5 y& N, N- H$ |" J
) G' X; D5 B# u
/ [7 W- a( u  m+ K3 M% v
rt random 360
& T' ]. g" e% @% o0 [; b

! H$ g+ f! t8 \( Vfd 1
2 t- f& o$ z0 |( V) G5 w4 l
2 c% X( x+ U. l3 J* U
ifelse(other turtles-here != nobody)[

/ m3 y% N! }2 X3 J0 N4 Q* w2 n' l! m: c
set customer one-of other turtles-here

! `2 B) z! U/ L: a6 ]' X& N4 G8 s  p  z. T, M" Z+ z5 y
;; set [customer] of customer myself
8 f* T' I$ z) S$ L; |

% p" {0 f; Y0 v; eset [trade-record-one] of self item (([who] of customer) - 1)- q2 T( S4 Q8 E
[trade-record-all]of self
1 ]7 q! ~2 Z. d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 z: f! f8 ~# u6 Y+ k
) C2 V- I2 \5 G# iset [trade-record-one] of customer item (([who] of self) - 1)
( D5 \7 q! f( G1 D2 a8 k% ^. p[trade-record-all]of customer
" h! x% N' D1 I# {! A0 U
) Z0 ^. z4 {3 `0 p3 q9 I
set [trade-record-one-len] of self length [trade-record-one] of self

6 i8 ?  l- j" e1 Z$ \
* y3 A! v2 E- X! e. rset trade-record-current( list (timer) (random money-upper-limit))

. t% j; k; ?( y; j# t; N7 g9 @( `+ B; p* S9 P( H; K3 g
ask self [do-trust]0 b& _( ?& Q& i% y0 \/ R
;;
先求i对j的信任度0 i  \+ S1 k  E0 H$ X3 n0 \# f
5 E* L/ i7 C8 S. v" _, @
if ([trust-ok] of self)
# l" q  j. z. j. C) ], _3 B6 m;;
根据i对j的信任度来决定是否与j进行交易[% }- g* r! O, i. u0 f* B
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
. E' s% \4 y  g1 U9 y& [% q9 \+ N7 R7 v# c$ F5 ~5 E
[
; {2 Y3 w( h& s+ [9 Q9 o; K( v: U+ h' w
1 |4 M4 E; ^0 j9 S
do-trade

; {% \, A3 H0 I* _
* k+ b1 \& q7 F% d! Fupdate-credibility-ijl

! k3 z( x" Z. P2 \, L) G& \
0 D/ H: e: v2 q- pupdate-credibility-list' i- X/ ~4 W# {' S$ n- w

) a0 L5 i! V" J! w5 `6 E' V# P) w
/ s7 ?7 p6 d) p5 Q: c" rupdate-global-reputation-list

3 g1 a& J) ~9 P) l+ ~  N- o3 V5 h
6 M9 D8 \+ E) y4 F" P& t( apoll-class

1 H, R+ [8 y) K+ J* e* b
2 d  m6 R& ?* j7 ^. `2 P$ ^get-color

! T- i/ \# w! t( V
$ u* d$ B4 |+ a1 N]]
. e4 e; C. `8 h6 p9 Q. D+ w9 ]
  u/ ^* L& l2 _;;
如果所得的信任度满足条件,则进行交易) r; @6 C- W5 z* a( N
2 b+ u0 P0 v% y4 v3 a6 I8 y
[

0 l) f7 f. ^" B. r2 ^7 v6 L+ a
1 ^, p; s$ y2 z1 C6 Wrt random 360

, _, _! d! w+ m  k# s! T% [4 ?1 O7 X1 }8 d! P: c; ]
fd 1

7 Q/ s/ V3 Y5 Q7 o! t2 U8 g, F; j( k, C! R% T- ^* C" i- q
]
) I8 y& [0 m. m6 T  I

) j' O: s+ J  qend
% s& P! Q5 j' A, s4 @
1 n7 r- D+ K6 f% Z
to do-trust
( h+ I$ D/ b0 C/ C# oset trust-ok False6 H$ a5 D6 [  z. Y. E) T9 _

4 X( j) J4 X/ B7 x& ?4 \+ M

6 z. {, K* @# N6 k5 Ylet max-trade-times 0
8 C, [% Z7 {% R% k+ D$ K  E2 xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ U" d, `% T" `2 l, hlet max-trade-money 0
) v1 B% y/ T8 Y5 ?6 R) S2 J, Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 W+ C, y3 x  m( U4 a1 s% O  E& m3 ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 B% c, L/ ?' W4 f* c

+ }, w5 i3 F1 h/ n1 g8 u

8 Q2 _* v% `) Bget-global-proportion2 @/ f3 x8 J( Y
let trust-value
4 d5 w( \6 [8 J- e8 e; f! v% `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)

9 X% c& ], Y% O$ F5 k, [0 y% k# Xif(trust-value > trade-trust-value)
0 d$ O* c2 k1 x  _/ ^" z[set trust-ok true]
- i2 G) J' Q; \! {! S4 Rend1 b0 C' M/ e4 r% J9 ~. R
/ a/ _9 n+ l3 c7 [
to get-global-proportion
3 d9 p3 [; T( e! ^8 |: K! Q1 Pifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 r5 ~& k1 a7 p; L
[set global-proportion 0]
. w3 q4 K8 ]$ G[let i 0
" }# g0 [  P0 R) Nlet sum-money 05 ^" z4 [0 j! O5 |% d
while[ i < people]
5 m4 h) c3 a& J: T; }) h6 o% E9 J[) G$ r. M0 i4 L. I/ W9 h% P' f
if( length (item i
6 t7 p+ K9 l/ [1 v[trade-record-all] of customer) > 3 )

, {5 L5 h; c- Q# \[4 \& ~/ H6 D8 g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 K, V9 F3 O' F1 q. V% f( d
]
7 z1 y1 {. G* Z3 Z8 }! X) Q]
, x; `4 p0 d4 M+ g" i% Alet j 0
1 U$ f" f. g& ]1 z' o, wlet note 02 s5 T' j1 A- P' T; A0 T
while[ j < people]" Q! D: ^" y: F' W" w+ b) u
[
0 y+ N2 x/ X1 B$ B) Iif( length (item i( d& h0 l/ W2 ^% u/ t
[trade-record-all] of customer) > 3 )
6 z0 K5 O! F- r
[' _& b% }7 T/ o/ t. C! x$ t6 t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" k' _# z; _& e[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 [3 q: Z8 n& i3 s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! ]  r2 g" l5 N. y7 x
]. q# u: f/ S2 j5 S# Y/ o
]. }7 W* I/ m  \$ o2 e3 _1 E% s, S
set global-proportion note
: @/ T7 L- u% T9 E  a3 K]
$ V, p- L* ?8 |- W( V, tend
3 V  ~3 q) }: w& d" l6 |- Y9 p1 v2 ?% i! ^! T
to do-trade0 p4 ^; `( A8 w$ |7 q; B" C
;;
这个过程实际上是给双方作出评价的过程
% b2 C! E( M+ k6 Rset trade-record-current lput( random-float 1) trade-record-current ;;本turtle 得到的评价7 A6 Q' }6 O7 c6 v8 K9 z2 I
set trade-record-current lput( random-float 1) trade-record-current ;;本turtle 给出的评价
: \! L" a/ N$ O1 A1 ?2 Z4 T/ e1 Iset trade-record-current lput(timer) trade-record-current
1 g" M5 A' y& F; H;;
评价时间
" z, a% ]4 z- ~2 s0 @/ ^ask myself [6 |# d& v/ ?" H1 z
update-local-reputation. e! \; n& d( ^) |# N) j! p" R; I
set trade-record-current lput([local-reputation] of myself) trade-record-current
( z0 n6 H" M& b  n6 m9 D]% C; j; ~- V0 ]9 X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- ^6 k/ ^) Q0 q. r8 R" C
;;
将此次交易的记录加入到trade-record-one中
9 b  p8 M( w" [# W, Sset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- s: n$ r- U+ g$ L
let note (item 2 trade-record-current )
% c- w# V" t1 w; [8 z# pset trade-record-current
+ [2 I, e7 u+ I/ U2 W. K: N0 w(replace-item 2 trade-record-current (item 3 trade-record-current))
$ f, k) s) n8 F1 E8 x4 q; N
set trade-record-current1 b" i# W+ G2 _6 k3 J. L
(replace-item 3 trade-record-current note): T8 T# t& _2 d! M) P
# I# Z# i+ O/ l# ?; ]6 w' p

0 o$ S' Z5 Z# ?1 f; Z4 Y# X6 mask customer [3 m* `4 s3 C/ s, s- B" q5 I8 `
update-local-reputation. \  h9 Q% t# A: s. U. R8 T
set trade-record-current) E- A. z. p+ V
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- d) X9 F. W3 Q% Q9 C9 U
]2 B- W: U' x3 _, V+ W# u( P, A
, R% s8 ]/ B0 o) j
9 y0 k% q" @/ v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" d0 [2 K) w; D3 t

3 x4 F1 ~1 q9 ~8 Y$ g" @; M3 rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% G' U+ P) [: B, l: f
;;
将此次交易的记录加入到customer的trade-record-all中
, Q' @7 j% E8 d5 ?! h2 D$ Uend# _1 O" z4 i5 W  K; w! m) W

: x# s; W# k- @. `1 u+ ~  s  Rto update-local-reputation* l1 R9 ?  X7 e. l6 M4 h. L
set [trade-record-one-len] of myself length [trade-record-one] of myself
) w! G2 b8 `' k0 g5 S9 j+ I' p- p. t+ q

9 `) O! Y/ e9 f- S. L$ K2 K;;if [trade-record-one-len] of myself > 3
( d1 v$ b6 z+ I" B
update-neighbor-total3 ?6 K, T. D- t6 Q. v, h
;;
更新邻居节点的数目,在此进行9 m( u! X4 ?1 i, p' D! r0 V
let i 3
0 N7 p0 L7 T, ~5 q8 Dlet sum-time 0+ |, D, K$ [, M0 i
while[i < [trade-record-one-len] of myself]# o5 f0 \+ I8 y# ^8 Z0 C1 ^
[9 b& e! ~4 N' q: r! o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- ~# [( _3 \7 s: I& k% r% K) F
set i5 F9 [5 y' F" Z
( i + 1)

7 k3 v+ ]9 W3 B- @) D8 s2 ~. W5 i]- I6 _5 q1 x7 }. G! X
let j 3
7 Y' I- H, @/ i! rlet sum-money 09 F! T3 f& \% o0 M) M& Y
while[j < [trade-record-one-len] of myself]4 S! W+ Z! H- Q+ J1 u2 ?  }
[' t3 I& S2 Q1 V! A2 Q. J% d. ?
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)* p: T6 F" w4 c0 u2 V9 ^
set j
7 [% \% v( W* N, E/ P% z( j + 1)

: [/ t* P" \% d( \0 E& V]( V& j$ `, |- @9 B: O5 Y0 l, k
let k 3
5 i+ e! q" a8 U, ^let power 0
$ W- Y2 P9 L% qlet local 0" h; ^  V5 l1 z9 T8 C* b7 E, u
while [k <[trade-record-one-len] of myself]% C  U  l) V5 U  R# {
[
* N  n1 ]4 k4 d) @; F# k0 sset 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) 8 Y, q3 u: b* F! Y' C
set k (k + 1)
8 j" J$ c$ ?. G% \]; a% E. ?+ \- G9 c- ~  R1 E* {& A
set [local-reputation] of myself (local)
2 K1 Q' O+ P3 c* hend( _5 r6 ^8 a; r# v8 k

0 q! L4 _( M" o' ~  dto update-neighbor-total
# y) R. Z, @+ s- Z! ]
/ ?! F: W* ^) f4 E0 x$ j! Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 [- j. u; E# _: o; Y) y' I
% K* C# |( d. d- l; F7 H; J0 P6 J
, W/ y1 \0 C3 f- A# n( x7 c$ t
end+ e6 w" X0 c. R' o, g1 N: ?$ ?
& o& n" Z# D# V% \9 l0 m
to update-credibility-ijl
* ?" T7 b' a, L# a
! c# T7 ?4 W; T+ U: [;;
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。
0 Q: P7 W, [( B  B. ?* f& ~9 \8 n9 ]let l 0
* l) b% ?% a( t; O2 P9 @while[ l < people ]! a/ t6 w, B) i3 L& c  }5 L8 A
;;
对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: W+ |6 u. ^! T, J8 K, h
[
- w5 n+ V; T8 C* Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 Q' d$ F. @0 {+ i) R. `- qif (trade-record-one-j-l-len > 3)
: H2 @0 G2 e, r. H: n3 J. M[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l的trade-record-one
3 M9 ^, [* x5 @/ j# p, ~1 hlet i 3
9 Y# z. m& V8 glet sum-time 0
+ @7 z; X( C2 u, u" A' h/ Kwhile[i < trade-record-one-len]: B* ]. H9 Z, ?0 j6 ?, c
[
# U! a/ g& l  l8 R: _. Q& f8 |set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 I& T" M! l, X: n/ A9 J
set i
* p  b, k  b/ W( F& |( i + 1)

9 a: m+ w6 @% j- U]+ F# T- P+ L4 e1 Z7 I  p) r
let credibility-i-j-l 03 P) P; t: \4 r+ Y
;;i
评价(j对jl的评价)( O5 [# c/ m; o9 }3 @, P6 h$ S
let j 38 D6 ?8 O5 \: C4 K9 z" n
let k 4( J# H' b9 r' ^! ?
while[j < trade-record-one-len]
6 ]! ?' V) k$ T1 x$ l: L5 X[% R* |, s5 H. m* p
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i第k次给l评价的这一时刻,l相对于j的局部声誉
, E  D/ E3 Z  q. K& S! w5 q$ g/ mset 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)5 s) J' c/ }7 }- y; ~
set j6 m2 R0 \" j" @% t
( j + 1)
# N% {0 C8 S( t
]
2 ]5 I: z, x8 x  o# Tset [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 ))
: I9 x0 \7 ?1 T2 E' k- ]2 }+ X0 s2 k/ [
# C0 D% K1 d+ e% f5 F9 s
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 u  t6 d: }* |3 K;;
及时更新i对l的评价质量的评价$ h9 t$ ], R/ G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
$ J- B* U$ K( Bset l (l + 1)& b" U( T" e9 i0 P0 A4 I) j
]
! x- a* F' g; k4 V: _" Iend
3 B, V2 V+ n  `- J; V4 v
* V) l' Z1 G( Z; Yto update-credibility-list5 h. u8 o9 l& q/ ]; _' U
let i 06 o  g8 Z0 ~& {; o
while[i < people]- a9 o' N" {- j- V7 e
[0 |& a: m6 d! G
let j 0
; Q* m* a  A* l- P' f/ t3 Olet note 0
7 T, Q! s8 e! S7 S# v7 Y+ |% g3 llet k 04 d) f! F. O& j2 @
;;
计作出过评价的邻居节点的数目
9 b6 {: ~) N$ ?& @while[j < people]$ k* D3 Y6 _  n6 \
[+ t5 a3 C) f! j& i7 U
if (item j( [credibility] of turtle (i + 1)) != -1): ^$ R; p5 F" Y0 `% m5 r( f1 M
;;
判断是否给本turtle的评价质量做出过评价的节点) B( N8 |5 b. P' N# @
[set note (note + item j ([credibility]of turtle (i + 1)))9 m  Z$ n0 m2 V  R9 N' S& V
;;*(exp (-(people - 2)))/(people - 2))]

( o# {: N9 l6 I- }; Wset k (k + 1)
/ [5 D9 }3 o& q% O  \9 a]& l0 ?1 e5 F& |3 j2 e/ `( m- o) ~
set j (j + 1)
9 k8 L' ?" V* o; U  R3 H]- M  I: H, j! ]0 A
set note (note *(exp (- (1 / k)))/ k)
# H5 Y( @) Y' N* T  lset credibility-list (replace-item i credibility-list note)
6 X7 S" J& R2 F5 j% d, n+ oset i (i + 1)) u  {! [2 l6 B4 I& `* s8 L
]
  x# F: ^; O$ L/ V! ^2 zend
2 s5 c, b2 i  ]
- K- y. R9 a4 H+ A! @+ {to update-global-reputation-list7 ~/ T& J! A; }. J7 e+ G
let j 0
$ V. ~; b; H5 d; Twhile[j < people]( g8 ]2 d* y( ]; c! P4 J
[
! a5 m2 a* }4 {0 q% Z8 Plet new 0
9 z8 L) [" E0 k! I' Q) g;;
暂存新的一个全局声誉
. @3 K0 V$ Q' C) j; `9 mlet i 0
: K7 D7 Z4 X& y# c' I# `let sum-money 0
2 y  r8 g* e7 B6 Vlet credibility-money 0
$ t9 }2 l6 J* m# J1 \while [i < people]# F+ Q8 t9 y: i/ F% o) j/ x4 y
[' T& k) \/ ?0 _: K% O2 p" t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, v; J6 ~( w" o: g' Q* k3 \3 c0 iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
+ g# {1 o4 p  t3 k; Xset i (i + 1)
, W2 C3 D  p0 C% s/ g0 Z]
8 \1 G1 k7 X) i; e0 V0 rlet k 0# k% `; s+ X+ |0 y$ U( X; ~; _$ ^
let new1 0. P3 t. a& e, p1 n5 L; Y* b
while [k < people]" b+ o! p! ?; ]( D& t/ U8 H
[  V4 T; A+ t! W: y) K, b7 G6 l
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)
( ~2 _! N" |" u) `; d" a0 Fset k (k + 1)
1 G+ m  }7 J# z3 E]
1 U8 _* ~+ n$ y. O/ f+ [, T) Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 K3 O, N5 o6 e  C3 Oset global-reputation-list (replace-item j global-reputation-list new)2 p9 w5 p3 S% r" }( `
set j (j + 1)
; @- K3 @% Z3 \]
2 _  M6 X% _. w# \" |5 Send- a* T& _$ u9 S$ ]' a
5 i  L# S" [, [$ Q+ c) h! h( ^

% }' m0 B% J3 z0 }  ?* d6 z9 T8 e& F; }9 n
to get-color! x  V+ I8 p% ^0 |6 Z

; l$ ~# z7 H6 ~; {$ b0 r, ]+ Jset color blue

; j" H4 Q5 K) O2 |end
! M2 u" K1 h6 y* M  @
- {5 V3 K5 |+ |. {) ]% ito poll-class) F+ F- G1 ?1 r, [
end, f, _# c8 h) R/ `
+ M0 I0 \/ r  f
to setup-plot1) G3 w% V$ a8 D7 k/ V
  G% l- H; C$ b! E! ]4 x
set-current-plot "Trends-of-Local-reputation"

) ?1 l( v7 b/ a" {  ]+ j$ M. W2 `. p8 Y
set-plot-x-range 0 xmax
/ Q) j; ~, w& F: U: n

" ^! G* e' a3 I) X0 m+ e' K* Nset-plot-y-range 0.0 ymax

  M$ u! T7 k, o/ h( [end; V0 T+ r% X. E; J: X

3 |4 Q- ?: p* _* J; }to setup-plot2$ ?: r7 c& n+ L2 I- M7 i

& p/ y7 y+ N* i" aset-current-plot "Trends-of-global-reputation"
, q- c) l+ y1 d" _
( s/ Y/ c. ~- ]) _2 Y, L
set-plot-x-range 0 xmax
0 S4 m# z: p4 w- E- {0 j! d
. T! g5 c: \4 X7 l9 {5 M
set-plot-y-range 0.0 ymax

# m! t6 m  h8 T' s4 R) b; Aend
4 N. o7 t. V* t$ j6 D
/ t3 c) t( f$ P; _3 gto setup-plot3/ j. x0 Y( }; k* Y. Q- W  O; D

) v+ v; Y% H7 Y6 vset-current-plot "Trends-of-credibility"

& V: H, q5 b. d& \0 {
$ `4 P% k( h1 i; mset-plot-x-range 0 xmax
* b1 q  g( F8 M

" h- U' t3 b- n' E( D5 hset-plot-y-range 0.0 ymax
5 f8 m. @, B! S' c8 M' s. x
end: s1 }" F" _( u6 |# [
2 \7 H& x: B+ Z: i8 X- x) a
to do-plots
9 M2 d, b5 Z/ F# Tset-current-plot "Trends-of-Local-reputation") t8 N7 Q$ H- Z0 D5 X
set-current-plot-pen "Honest service"$ w# ]8 b: _, W. ^( \
end" i, K! K1 ~8 z% C

( g& W+ X# z- L- W, L[ 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.6 x; F. i" g0 V& ?  a2 m3 _- C! H
4 Z# s5 \' @7 g6 K: Y
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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