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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:# ~# @7 l9 A4 S, y* l$ h. q) ?$ \
to do-business
$ s1 n1 E( h! Y  \# | rt random 360
; L0 b- }/ U1 m% B9 [ fd 1. T' `( @/ K3 @) i, t" H  a9 M
ifelse(other turtles-here != nobody)[
8 K+ T% g/ z. ~1 v1 x2 {   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.3 e" L( z1 p& |3 P) E
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) x. {6 k  z- k- l3 S/ V5 s   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 n, r' c2 a4 w7 o   set [trade-record-one-len] of self length [trade-record-one] of self
3 J9 T6 P6 ~. N) H! S9 B% f   set trade-record-current( list (timer) (random money-upper-limit))
0 W! \& {0 ^3 Q0 n4 R) v& W: p( F( ~) |
问题的提示如下:0 L. p$ s* @* l' o/ t
2 \# r3 [) q0 {3 ]* H
error while turtle 50 running OF in procedure DO-BUSINESS; w+ z; I2 X2 C9 ?; G
  called by procedure GO9 P6 v: {2 I' r; Z
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ A* ?/ K4 p1 i/ A: L& u
(halted running of go): s5 p. T" W7 ]$ [! p& i: U# y
  V* C+ l/ {. x; C! U
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~~& l" W& t$ r9 l. v+ V' K# d) j
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: |  l9 L9 I" ~: p1 U
globals[2 w- T& d6 V) T) z
xmax
7 Q" k- u0 N0 r. w6 y( h1 kymax
& u; h& `* O1 r& b$ sglobal-reputation-list
5 O. M! F  \: J- B$ G- R2 Q# H# s9 C# A3 J% J, e# }# u* G; N
;;
每一个turtle的全局声誉都存在此LIST! E; C+ @3 S8 }: F# {# L
credibility-list
: Q0 l2 E! o7 ?& K;;
每一个turtle的评价可信度5 n( F; Q* G! l5 @4 r, V
honest-service
9 i( B" M0 J: V* k+ [unhonest-service
4 w  W$ E/ m( e( Qoscillation8 Y8 `, x. V7 j
rand-dynamic( k& q6 o' W4 ?+ G) q, E
]
& q0 W/ Y# N! N% X
  `0 C. i. \, U: @9 |4 p. d6 x5 Yturtles-own[" Z) ^8 o; X( \7 d* j& d
trade-record-all% v3 @( a7 b1 k$ i
;;a list of lists,
trade-record-one组成
. X7 D* W4 v, X9 ctrade-record-one2 j- X  Y2 U0 \+ y: t9 p3 u9 C4 p: @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: t& j+ v$ n5 J' W8 l2 E
* e; Z2 h. y( L' Z8 a7 C. h9 W;;[
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]]* k) x, c8 R) S' I* g( d/ s
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]
* R: A& R0 g9 s  ~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
, k, G! m. j  B! n1 f0 s6 C/ Rneighbor-total5 X& U$ X* P& U5 @. ^1 [
;;
记录该turtle的邻居节点的数目
: _! J- ^, y" S% k/ }trade-time1 p# u) b# ]" p. R# L, S  f! X. M
;;
当前发生交易的turtle的交易时间
- M1 @- d, v  mappraise-give
# t: Y: o3 G& [( K( J;;
当前发生交易时给出的评价! o9 r+ `7 Z' X& H
appraise-receive; F  J1 j$ g; Q1 L$ n/ q9 Z2 `
;;
当前发生交易时收到的评价
8 Q/ [7 q: }! N% sappraise-time
5 z  j# _* B) g, R% y;;
当前发生交易时的评价时间3 C' _) L! z4 p# v6 U8 V8 B+ {
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% `7 P6 O; i: r2 F' S. M$ S! ^
trade-times-total* L, j- n5 x/ c, I- |
;;
与当前turtle的交易总次数
4 p0 R& s% c- ?( H+ ~trade-money-total" t& ]4 t* S' A% a
;;
与当前turtle的交易总金额' a* P& m0 f5 U$ c6 L: c
local-reputation/ j: Q: Q1 s5 A  R3 I5 b" e
global-reputation7 I% ]2 J' T) n! W* f/ @
credibility7 m# f; @9 E  h  F2 q% L! N4 G
;;
评价可信度,每次交易后都需要更新
7 e( o) U1 R, q' Xcredibility-all
) |" z0 n4 O7 [: N0 D, `1 I" W$ B; h;;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
! r+ S( X) o1 e: t2 m; W
. v+ b' B, g* ^# b6 Z;;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( n3 x' `; ^( R
credibility-one
) c1 S9 g/ e/ N! n7 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# [0 \! M) ?5 D; K* R1 p
global-proportion$ ~  O8 U6 P% y$ `! U
customer0 _! w0 H: e8 l8 q& V% X! n
customer-no6 S( z$ t5 p. U4 x" z( n
trust-ok
* g; H) m1 p: [7 G. T% }  strade-record-one-len;;trade-record-one的长度
. N" r  \! W0 s0 D+ b8 ^, }% e) f]7 ^4 c7 X- Y: Q2 T/ h4 ~

% ^+ J# O7 M: y- ?0 R; };;setup procedure
# V% \, _5 K1 w) s
" I/ W, W; S& t. k: ]: o2 Xto setup9 Z' e# ^2 e% F( ^: N1 Y

* `" v- Z9 {$ s5 T$ Q5 i0 L( ~/ cca

: i/ M, Z0 `4 a
) g$ s, \5 N3 u; X; J; h; }: rinitialize-settings

5 r. |3 M5 X" Y6 s2 d' |
+ c9 A4 ^- L' i+ L* Z5 w$ j: Scrt people [setup-turtles]
% K" o; D, Q, ?8 y( l
8 k$ n+ w" x+ T2 q; W+ B$ ]
reset-timer
; F7 P2 y; G7 h, b* F

/ t& c8 A* A7 s2 P8 y$ ]. f3 Kpoll-class
5 Y9 M, x6 T1 r' Z
1 Y' w. m& w9 S
setup-plots
2 F/ e; f9 {( c4 t
1 P  ]: p( p% `) E4 P
do-plots
) X  k9 C& R! K
end7 e! C5 J8 U2 N7 |

: p, e* B+ ]( H# d/ j* cto initialize-settings
( `; T( G( F+ f" J, Q7 i) B/ ~% n
! i6 m9 b# n  d' ?0 H: A7 }2 O/ Uset global-reputation-list []

/ e* }/ r4 d7 X/ I& h. g( j5 j* @) a+ R' e$ l
set credibility-list n-values people [0.5]
  s! J/ d1 c5 J) y3 X" p( y2 q

6 z, V" ?  ^) u: c- d- Rset honest-service 0
/ ?) p, W! d7 X0 A

& ]/ q1 N5 L" k  _" G' z% mset unhonest-service 0

, u4 a% k, p, }
% G# @: ?. e0 a; D3 S  @# lset oscillation 0
! q% V& C$ [/ a& c! K

9 v5 ~6 T3 I  b9 s3 b' Y4 _set rand-dynamic 0
; ~' z* m, y5 S( Y8 Y: T5 ^" d; y/ R
end
( }0 k# }5 W. i
. T  t/ `- L1 h5 pto setup-turtles ; q) C. a8 ?/ E0 z/ U0 r" ?% t$ ?
set shape "person"
0 T2 e) V8 c- c4 Hsetxy random-xcor random-ycor8 u) s* a3 n; r3 Q  b
set trade-record-one []# i. k. B* @, v9 _
+ f6 h& A$ U+ B) ?  _, R( Z
set trade-record-all n-values people [(list (? + 1) 0 0)] : ?1 q" @/ R7 C8 a3 x

* G0 i' c5 B9 h, Qset trade-record-current []5 V+ F0 p( G: a" R
set credibility-receive []
$ L. Q! k7 N6 a& z8 E/ n3 i& |set local-reputation 0.5
; ?6 F8 ]1 Q2 n3 l: t: f  f  R1 hset neighbor-total 07 d/ `& L% n1 u) u# Y4 v
set trade-times-total 0
; E2 N9 D4 r. c7 u4 Y, @- oset trade-money-total 0
: O# t+ L: f& {) Aset customer nobody
; x& G! ?$ X$ mset credibility-all n-values people [creat-credibility]9 k/ f! |+ C; [6 P) R
set credibility n-values people [-1]9 d* E% C/ E& l
get-color- S- i8 ^" J$ s9 Q' r! I! D
5 V; X! m7 q+ X) v6 W
end
, x3 Z  ?# b& O/ v) j* H( R
9 L0 H. @  t, [8 P' N% dto-report creat-credibility
2 K: P. r1 j9 r  M: l; ~; ^6 greport n-values people [0.5]0 ?( ?+ V. H; K8 t
end
, {1 d$ A# Z$ x% \! z& F; J
3 @+ h/ q0 I6 A; ^to setup-plots
9 Y2 @. A  _% Y: R
' P3 {& I0 I! R; i9 X3 R: bset xmax 30
9 ^. n" g# _$ R( A
: }( @5 T( a" Y# v( B0 i7 Z. a
set ymax 1.0

2 U4 W/ ]' b. }2 t: c% l! @/ d1 T# r1 v& k# B1 K$ u
clear-all-plots

, a0 B  p2 j) Y& {8 w; N0 p  {2 G1 l
setup-plot1
2 P' w4 W" D0 p) X+ q( X( x

+ c* b1 G# L+ F8 ysetup-plot2
. _& N* ]1 D% _% z6 E/ |4 ]
0 K  a5 J. r" x+ H$ i
setup-plot3

5 x! }, p" t) Gend
6 k0 S( s* r. F7 w, [$ g/ Z$ D  u1 p4 V# P# I% \. r6 J
;;run time procedures, Q. h3 M6 P' E0 ~3 j7 Q  x. m

/ }! a' Z& Y  M' t/ Sto go, T# J& ?3 e# _
' Z% G2 x! Y6 t8 |' g
ask turtles [do-business]

; N+ Y3 {1 |2 N9 I+ Z  m' Uend
+ s0 M/ d2 d" E& Y
* R$ A/ V, J+ ]& k$ A' yto do-business
0 C, R, O1 ^' Z$ K. q( v3 M
8 h1 n8 P# @3 ?; L

4 V! m8 c! \7 H! ?+ @( Wrt random 360

5 v# R/ U7 E+ l* j6 v
* A1 H: a" K# a+ [7 afd 1
+ _/ W/ c- T. o1 Z; }' @

6 |9 Z) K; w1 X5 ]ifelse(other turtles-here != nobody)[
4 @% X+ Y4 C. g6 k

  H3 ]# k3 b/ H4 e% Y) rset customer one-of other turtles-here
- O( [+ y6 ]8 y! n" t

# ]9 w8 i) T2 L$ T" ~# d;; set [customer] of customer myself

7 O  W" K% c; B$ @/ @; C9 P2 Q
9 K! G. y* a) R% z8 t# H7 j6 p$ n5 Q/ qset [trade-record-one] of self item (([who] of customer) - 1)
. r1 I6 d: k. x" E7 k" b; L[trade-record-all]of self" Z/ j: q  F3 w4 q  h4 E8 D1 h
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 j  G# ]+ h: _: L" r- t7 {) n

2 |: F7 b' H2 v' S/ }set [trade-record-one] of customer item (([who] of self) - 1)
( \: {# B* Y* E5 N9 Q2 ^4 |[trade-record-all]of customer

6 H- B4 }8 ^; X& t4 j9 W- j. t: a
set [trade-record-one-len] of self length [trade-record-one] of self
$ k4 h2 s! Y; ?& |! T4 m

* b0 o" ^# A7 F1 K/ rset trade-record-current( list (timer) (random money-upper-limit))

; F& a! ?! b) I* s; e5 L# \1 x' x  s% E" w8 f5 B: I0 @* L
ask self [do-trust]
, F. M: \! Q6 O3 Y$ _;;
先求ij的信任度
' s- x% p7 F2 t% r; @& q
2 t9 W1 j3 e& _* j* j; i0 \7 y# ^if ([trust-ok] of self)
7 f+ o. N# O. U' |! N4 J;;
根据ij的信任度来决定是否与j进行交易[
( u& m. C5 ~; @& wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ Z/ P6 i$ j6 v& D  D9 @
9 Y. Y  B3 v  m. m0 c+ [& a/ a
[
$ m2 ~8 s8 E+ r

' y7 l- \& T  u7 G) _* Y8 odo-trade

& Z4 P9 M# s7 z- ?  K( r4 q$ ^
1 O: l& C6 O2 Y$ E8 O8 C* j' @update-credibility-ijl
: Y) ]; p. z1 n5 p! Q! z- N5 n8 e1 _

& t/ J: T1 W7 F  p- Vupdate-credibility-list. e. k1 S& W$ a
: T: v; t- E  m9 B# P8 l
6 A' Y4 n5 c! e- d& U% @3 ]8 g
update-global-reputation-list
0 |- H0 y, S4 `/ O' l% ?. j2 }5 Q

$ v" n! C8 M/ F, j& [/ V! Opoll-class

) @/ z4 o& z0 K$ n/ Z% ]* C( d0 C0 O1 T" Z/ l
get-color
% G' t$ _/ x9 x1 @! @

9 e: n6 F# Z% \7 I% H- {/ d- \]]7 V) y  s' S) H9 A5 }( e3 }
# I: A/ O% H* N' m8 ?4 F
;;
如果所得的信任度满足条件,则进行交易6 F$ Z0 E+ ?  I9 s* I- o( H  t

" F* {; u6 m: [0 v- Y  r9 h[
$ v2 P  r/ T1 O; K

; G% `9 B" k3 _: m2 ]* D# n3 I* n1 Qrt random 360
2 ^3 h  z0 |, A
9 Y( u2 ?; k  T3 k2 p
fd 1
6 ]& H( c  B/ a$ P6 F8 @( Q1 f

- a$ Y0 R" f+ ?" s5 O9 o' C' I& []
. }! O# r5 q: c: B/ T7 X, ~
. R- L" p+ l, b/ F: K! K
end
. z& z& r3 @0 p! w
. b" f4 D) c& m! O( W$ C! ^
to do-trust
1 e' X5 |1 ^: w& A/ oset trust-ok False4 N* \: ^6 m2 c' s7 g
0 I' ^9 {9 O7 c& G

. j6 K  [4 `5 q# ^8 P, I( mlet max-trade-times 01 v& F5 s, b3 x+ t
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& l- b, g( k* t/ O0 E
let max-trade-money 08 ?, t5 j; A( k3 ]# }: g7 ?
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 u' d7 T- N" P
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 y0 J# Z8 u9 M6 Q7 h7 s& h% f, \. C! _
1 w1 t8 \1 |: L! T9 \, X
get-global-proportion
+ P8 X' z" T8 W+ ]let trust-value, l5 j7 k( g' e( z8 b
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)
6 {, K2 ?7 A6 b% y( _" Z
if(trust-value > trade-trust-value)3 ]9 [8 U8 j' a2 `. b! J$ S3 B) v
[set trust-ok true]
" L5 P6 m4 I- zend
/ n$ o, j7 p( N$ v- }7 R
  A1 V/ `& F! `' [/ u/ Xto get-global-proportion9 h! H6 C4 h  C
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 o  E/ t5 C2 H# @  v$ V
[set global-proportion 0]: P6 P, ^2 D1 I* Q. G- ^" D2 d: {
[let i 0+ u2 ~1 M, j9 H/ @2 m
let sum-money 09 r+ s. U' C7 I! ?. w
while[ i < people]+ b0 f) e& g* Y/ |
[$ F- r9 ~3 G( f: o' Q- j
if( length (item i
; B; ~. V* e( ~8 B! V1 v  |  g[trade-record-all] of customer) > 3 )
/ f- c: p4 f5 _6 T: r3 ]5 U
[
( Q" D! ]0 b% [# yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))" z, d4 n# s% e( {3 @  T# K% s" |
]
- G& `9 W3 S- j4 I5 J0 C]+ J- g" P* Y3 X+ T' c& u' ]
let j 06 M+ ]7 e7 m! X4 ^. ^+ ^# B
let note 0
/ O& Z: a% O. A& ~while[ j < people]
0 E' F% l5 x& q* q[
- o: h6 k8 X5 K) B1 ^if( length (item i9 A  S# y" V0 T4 `, |+ V- c5 B. `
[trade-record-all] of customer) > 3 )

1 Q0 `* o# Z  Q6 O$ @; M[
$ o- f1 I$ u: t& y) H0 Vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! k8 w5 ~; q( z# y% k3 J[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! `& `- [2 U7 V! }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 f4 P+ |- d& D' ]8 e* Q
]
  Y/ Q5 L; r0 |2 g( N4 W# ]" B]
% a( m, l4 Z! Y4 O' l- Wset global-proportion note2 }* q' @" g% ]' V" b2 f+ D/ v8 `
]4 V& h' d3 r$ ^
end
+ h! ~" q! D8 D' ^
0 D6 {' y/ D: l. Vto do-trade
2 b' b1 k: E3 y;;
这个过程实际上是给双方作出评价的过程' e5 Q7 s4 ]2 ?1 v: _$ V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; i7 b5 S& I; E) C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* k( M; o) C2 D2 b/ V! r& X4 b
set trade-record-current lput(timer) trade-record-current
7 z$ ^' N1 O' {% K) u;;
评价时间
) H0 }" m# K7 a% T1 D) y3 A7 A' Aask myself [
) T& J- K* @- q" Hupdate-local-reputation; ~( V6 N) {; @% R" }7 n/ ~
set trade-record-current lput([local-reputation] of myself) trade-record-current6 b3 l, h1 `  r' o8 }: O1 ^
]
/ X, N% j) }- U" M7 |2 G( Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 a" e7 Z* ], w! C;;
将此次交易的记录加入到trade-record-one
2 D4 ]$ t0 ^( tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 b! {; [. C8 Q1 L" C- D( p, l( u2 Blet note (item 2 trade-record-current )! U' i% C3 N  L, t, n* A9 d" y3 Q
set trade-record-current
' A6 [7 J" J( m6 \1 Q/ c: ?(replace-item 2 trade-record-current (item 3 trade-record-current))

2 [. f& [4 e9 Zset trade-record-current
- U* y+ z. ?1 j# d2 v(replace-item 3 trade-record-current note)# I0 k( Q5 ]9 K- M6 Q. l) a( x

, Z% s: w$ h1 e7 z3 _2 e% I. r; e6 |

& ?- H9 W& f; `% R( D, M2 ]" V2 Mask customer [" v: z9 W- t' F% ~3 y! W' |/ J
update-local-reputation& m4 z; g* q  t7 Q* Q7 C) N  E
set trade-record-current
$ X/ a+ W9 i, l) R3 c( z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ }* {; B2 s+ k. s
]
: O* S  y8 C6 `9 b# X8 K. z/ Z: I
" R$ R. R' Q9 r& N% c1 J

/ L. o$ k( ~% E( m; b$ \: b' Kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, I: }; ~; X' X+ e  p
) G5 }) W' ]1 g- B' a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))1 I& O! j1 S- a' }% N
;;
将此次交易的记录加入到customertrade-record-all
( z% ~/ U" a0 e/ m% @9 iend+ y7 h! c- j) L8 b

6 X6 L7 e6 ^# M/ \* s" Pto update-local-reputation
8 N/ w$ M. B# t6 A7 vset [trade-record-one-len] of myself length [trade-record-one] of myself
: q- ~7 z3 y: M7 [4 U
5 N2 h/ ]" O8 g0 i
% o7 x/ B$ ?2 I  f7 |;;if [trade-record-one-len] of myself > 3

& @0 q) c, D+ gupdate-neighbor-total- T+ c! N5 D1 e8 f5 i. F, c
;;
更新邻居节点的数目,在此进行
. |$ I! d  F8 I$ p3 m& y4 T) h9 Ylet i 3
- |2 u# ^6 R1 elet sum-time 0
) W% E. `3 s/ [1 ], X" Gwhile[i < [trade-record-one-len] of myself]6 L/ W2 S; O4 S
[6 B. t! o" `* |) s, o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 F7 u3 @& C- Q, O: Nset i4 ?3 `' x  q- K$ |2 L, `
( i + 1)
4 A4 K" A/ a0 F9 u1 _" u- \4 Q
]
$ ~* U" f  C$ ~let j 33 c! o- @- o4 j- z6 a5 p% \
let sum-money 0
* ]8 Z1 q, D% \9 g$ ]while[j < [trade-record-one-len] of myself]7 @4 M8 X8 q4 ^2 z: J5 C8 q
[; @3 w* q+ R0 f. w0 L5 r0 F1 A
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)  k: O+ l6 m  i0 |( S
set j4 y* J/ C4 s6 T
( j + 1)

5 D! V  P: z0 {) m; W) g3 [# P]
3 H' ~. ^( E( P9 I0 {1 P5 V# z+ _let k 3
1 M- {6 W4 U9 Tlet power 0$ g) K3 T0 P9 b6 Y
let local 0
( G/ ?4 K4 p5 q- I* {  J& l3 owhile [k <[trade-record-one-len] of myself]
+ m. t) i' q% o[
, q4 o+ f  T0 q9 A- W2 Iset 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)
: m" a7 p- S, X$ Xset k (k + 1)
. H" a" |# d# n. ~6 f! S! D]5 Z# @. P- g% Y* z  E1 [
set [local-reputation] of myself (local)0 W" |$ m# x& f$ J- G$ Y
end
, ]+ G( C) b2 m
* h1 w& _) u/ a0 f/ l: {& Z# u. K" Mto update-neighbor-total; f" @6 ^7 l! j- \$ B8 C' }" h
$ l+ b) V, @+ A4 M  ~& {/ y. v, T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; j0 D: ^; b0 |6 F: u# q) y3 J  W* @! N2 g3 m* M

: y7 n0 b0 j% \: T) ^/ a5 [7 Nend1 ~5 k5 g. H. n+ L- s( P; o6 W

1 T9 c0 T* Z/ F) M  k& K1 Mto update-credibility-ijl 3 S8 t' F( Q# l3 V

! M5 Z) c7 E( e$ R; `5 m* ^# B7 c;;
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。3 @7 C5 m8 I6 F1 E1 g/ S4 p% A
let l 0; D3 ^! o! Z! n5 x: r
while[ l < people ]
+ |6 D' Q* ]" k- C+ U) \;;
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
" O% ~4 V+ o  T+ g7 L3 Y/ R" a) q[  b7 T& p" ~1 K, j
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ `6 i& U# m# z+ Zif (trade-record-one-j-l-len > 3); b2 Z4 w6 [' W6 @& Q. l9 T5 N
[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" r4 H# r0 x. {# N* t" ^6 Flet i 3! E- }. f5 b. F
let sum-time 0
. s' {, H3 }: S$ L0 e4 Zwhile[i < trade-record-one-len]) ^6 J! H: h% Q" l
[9 c& F: |: _5 P8 \$ w! T! L4 B7 p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
. B6 f! a3 [- H) B9 {5 fset i
: O+ |; v: r: @$ A! l( i + 1)
$ O$ p, ]& {; }4 \+ Y3 E7 T
]
/ o6 L" N% U8 v& Olet credibility-i-j-l 0
1 N+ O  O; i+ n3 d% `/ x; a;;i
评价(jjl的评价)6 f3 a9 S- `6 T
let j 33 l  a  |4 ^, @6 C' A$ l6 ~+ p
let k 4
! d( ^0 C5 y" Rwhile[j < trade-record-one-len]% X, v9 l3 c/ M/ Q7 u2 k  ?
[, A6 H+ y2 ^$ Z; a  \6 C. ]' M
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
- F2 W* n1 b0 Y& Xset 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)
, I) ^$ F$ k" R5 \9 U) `set j. b  O2 a) C, J' _" j+ ~6 }
( j + 1)

3 @6 W# w8 a3 N8 \]
) ~4 Y* Y: ~8 k6 k. B/ sset [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 ))
8 M; f4 g0 k7 y2 V) M6 C5 B: n7 n& U  E7 m7 T

) @+ H2 c1 D" s6 b. L6 i0 c+ ^let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- U5 U" Y( k' T* [  o;;
及时更新il的评价质量的评价' J1 m5 P9 X* |6 `" H; L. E2 G" S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 Y; i$ t- f/ d# B% k0 Lset l (l + 1)
+ q( y1 i* o5 S1 [) `]0 p& R* I- _6 R* w& p) s7 t8 p
end
' I: F% ~) H7 g8 x0 k/ _, S- @9 e/ ~/ s; ^
to update-credibility-list
. M2 Q* \- {) m6 X3 k5 k  ]let i 0
; w" v' ]  y2 Hwhile[i < people]/ x; J4 ^) X2 ?9 b0 v
[
, t* k! M. D) z- d# M; zlet j 0
6 h& U) Y5 C8 t/ Nlet note 0  M* ~! Z9 t, R" \
let k 01 t2 ^4 \" q1 ~* d: o; @: a3 b  u* V( x
;;
计作出过评价的邻居节点的数目5 z' F! D7 q! Z$ o9 H) i6 B4 ~- ~9 B
while[j < people]7 T, y2 n$ L3 @5 |& j+ O' v
[; W/ B) C4 F  A2 Z) U
if (item j( [credibility] of turtle (i + 1)) != -1)
, e# q2 X0 R- f: J, m/ K6 ^8 L;;
判断是否给本turtle的评价质量做出过评价的节点6 m! E5 S! ?1 c2 {0 U
[set note (note + item j ([credibility]of turtle (i + 1)))4 Z1 e/ b7 l, W5 m
;;*(exp (-(people - 2)))/(people - 2))]

, H) q$ N6 s+ |% ?" g" ^set k (k + 1)
  }) k9 {6 ?( a4 \# @3 a]
" s+ I9 D! ~, b- Aset j (j + 1)
) b) `5 ^9 u+ d. r; H]
* C7 E5 V8 i" m4 x1 Kset note (note *(exp (- (1 / k)))/ k)# J7 H9 E  w$ T7 o& }, n' J, S
set credibility-list (replace-item i credibility-list note)- B9 t! {! b" w: v1 G# C6 T
set i (i + 1)
( N$ P6 @- c/ I* k]0 x3 j1 Q$ m' c  s
end6 ?( O' g/ I$ u  v

2 Z/ n& I: f& v2 N8 g. Rto update-global-reputation-list
8 ~4 Y8 N/ G4 L* blet j 0! R. ^5 q! H: n$ t4 F* P
while[j < people]
& }/ M* N2 t# I! \" y[: U: ?8 s# j. E5 |. v
let new 0
2 X- w# S% w8 Y: m$ s7 P4 E;;
暂存新的一个全局声誉
$ U! U% ]; w6 U. g) Olet i 0* V, i6 ]$ N0 e6 V+ C3 `
let sum-money 0
9 G  K" r  ~5 e7 o. E5 _% h( plet credibility-money 0
& \) Z: O4 N* `; i, v5 rwhile [i < people]: D" p4 y. {, a% [  B4 d- A8 E4 C
[' `+ Y; [  i" m! O) X, J' X% v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 }9 c( z2 B- A' D3 Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! o: p. b! z- I6 ?$ f# ?) Cset i (i + 1)
7 Y+ g7 M  _) \]3 d! e# I1 z* G" V' T$ j1 x3 p
let k 0) q/ m! o2 s# [4 b7 w
let new1 0" k4 z& f) X% v; q
while [k < people]
, n, j% y* l( i[
9 k' D, G* w/ }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)
- q8 \3 U% P) X* Q, j" I$ _set k (k + 1)
/ |. W# d8 p7 T: ?8 v2 z, V9 W]' y+ G6 Q- b: @2 o( w
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 k; G. L4 p$ v3 S. kset global-reputation-list (replace-item j global-reputation-list new)8 ]: e3 V5 ]" ^: t( W
set j (j + 1)
# h7 l  r3 }2 K6 s0 w* m], S: g: |& P, T: M1 N+ y3 j
end
8 F/ `$ E/ K% w4 E( \& \
1 J" k% V% p9 w5 O) G: j4 P9 t% V7 d) k8 F$ P1 Y- Z2 \# G( z: w* X
& Q3 o! R. k4 \+ w4 F0 f
to get-color5 Z& }2 |) i) Y4 ]+ C7 }8 t

6 K: P. z$ M; P% X& \set color blue
( }4 j9 K! i4 a0 k! S! D
end
; o5 n; ]/ W. i" h) U* R) E2 }# }$ |, b9 \9 T
to poll-class
: U3 b9 l% {2 g5 k+ Y; eend
  [8 F% D6 C+ C! ~& s& e2 t- W0 a2 a! z
to setup-plot1, S4 R0 J6 X5 y  x7 V9 u3 Z

: q6 t$ W+ R! Q7 Dset-current-plot "Trends-of-Local-reputation"

& p2 ^: J; |  U3 N
  C0 X6 |9 V9 x, `set-plot-x-range 0 xmax

# K' {! p/ d/ N1 D2 Z0 y6 ?
9 [$ o# M. `1 c9 H, Iset-plot-y-range 0.0 ymax

) r9 {! _' o1 V& Z! n% F! Mend( s3 ^- k; m4 k) M& l, P" j! s/ m: l
9 @0 \- f" A% {3 u/ }
to setup-plot22 p, B; c( N8 Y. }' C" [& M( C1 O7 D
4 a6 C" v. f' g5 {4 U; _# B
set-current-plot "Trends-of-global-reputation"

+ S% a; R2 ]3 v' Y; w, K9 m" w, u; p, D
set-plot-x-range 0 xmax
. q9 _8 [% j3 N" r

1 h6 M$ v% Y+ e. d. `set-plot-y-range 0.0 ymax
* q2 v0 m; C# m9 |2 [, l* N
end
0 m- [& y. B) w# F6 h  a( g: ^/ E4 O) w4 L  t' B* q6 _
to setup-plot3
, ~$ Z6 u+ c8 Q+ }( W2 q( G7 f7 ]3 b
; Z2 J$ `$ g) b# F0 \# \set-current-plot "Trends-of-credibility"
0 `' L+ N# n4 x

& O  k/ {; d; A& w. Sset-plot-x-range 0 xmax
; N  G( u5 q9 }" G: @0 b/ k4 k' o

0 `- w0 N: X* h8 Y  ?9 Jset-plot-y-range 0.0 ymax

) W0 ]  i0 a2 Q: b! ?end
8 V) c2 X" [- q2 ^" z9 t6 w% M" q' R3 g" Q+ d; s) i8 ~* ?
to do-plots
9 B! O: p* C. h0 Kset-current-plot "Trends-of-Local-reputation"- }# [5 T3 S$ x1 i
set-current-plot-pen "Honest service"$ D! Z3 r3 B; Y  M
end( p: E: A/ \+ H
' c9 l0 g" c2 R+ O3 ?
[ 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.
" W! q8 Z; W( ]0 R
7 \$ E; B: d! S5 R" D2 \8 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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