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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
- `2 N6 }- Q, H& x) b6 N% E0 |to do-business , X2 O: g6 W2 q. b5 P" I+ ^
rt random 360
; |4 c- b6 l+ U2 s9 m  O fd 1
  y6 F: c' M5 p0 t( L/ n/ b ifelse(other turtles-here != nobody)[0 p- O% S0 p7 a& D- ~0 {9 h
   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.
. O8 [  _* x2 U7 \  x4 ^) k+ Q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 o+ a6 O6 }& J/ y7 P9 N9 b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ B( R9 Z0 b4 k! j0 g0 ~   set [trade-record-one-len] of self length [trade-record-one] of self
/ u1 k9 |0 R1 |7 t  \   set trade-record-current( list (timer) (random money-upper-limit))
7 x- |$ F0 ?% S# W  H4 C
) f) k4 b7 u' ^问题的提示如下:7 d1 A( _+ U' T9 h& U* C

" ?- U( M9 A; |# L+ }' k- O- jerror while turtle 50 running OF in procedure DO-BUSINESS  h/ D! @* v/ i# ?  F
  called by procedure GO# i$ u% L' ^4 u' c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
* O, Z% K6 @- H) d' C7 B
(halted running of go)
: K" U  Z2 e! x2 y7 q( w, p2 F* V) _% _; @: o  T5 y
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~~1 r6 N5 x5 y8 b' D& K: m
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
. T; w8 F$ C6 i' ~8 B/ W2 bglobals[& ]+ `9 F- ^0 S
xmax
7 d. {( h9 i+ o, m, W( |, Fymax% F( j, O7 p6 u9 M% B
global-reputation-list
  J& N% X/ _) \1 |- n; q; b* L1 J7 t5 o& e/ v, M# \
;;
每一个turtle的全局声誉都存在此LIST9 |7 k% c' @' J2 {! C" e
credibility-list
) c9 i$ t  a8 x! r3 ?6 h' T! R4 N5 I;;
每一个turtle的评价可信度
9 B% I) V$ [' x/ w  |" Nhonest-service
; }( N! }) b2 N; @unhonest-service
  n. E6 i+ Q; i% {8 Noscillation) l4 J$ O! e4 X
rand-dynamic. I3 m' f2 m8 [3 T
]
( l1 O! f- i7 Z
+ {2 s& {0 J9 ^1 Q3 y. |1 @, jturtles-own[0 Q) y; U/ ]/ C* c" I
trade-record-all+ W; J7 m& b% {  A, |* H4 W, L% m7 d
;;a list of lists,
trade-record-one组成0 O* b; X/ U/ X' T. Y
trade-record-one
* O; ~( `" x% y. N& d3 J;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 _  |, Q9 x# R! j* {) N+ b9 W

. g" V& ?" n) O) l, B: g% ]! N* o;;[
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]]7 n! a2 b. z, h9 A6 [
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]+ y# C& u% N  K- R% z# D
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+ c1 g" ~7 o( \neighbor-total6 n; V7 l! d7 v  I  T
;;
记录该turtle的邻居节点的数目
' q7 [6 q& g4 I( ?: P* i. b$ k: otrade-time
% ?4 g' W/ e% };;
当前发生交易的turtle的交易时间) q5 o& j& D  B
appraise-give
; ?1 t* i: }* C& @5 U6 |' ^;;
当前发生交易时给出的评价
. J: v  A. g# j, kappraise-receive) Q7 S4 L5 K2 w% k# ^) Q8 [( f  W8 R
;;
当前发生交易时收到的评价
# a% y' g; C$ a' x+ j0 ^2 U$ z5 t) i5 e, Yappraise-time+ p# V: A+ _( @0 U+ M
;;
当前发生交易时的评价时间3 U7 ]& B! F" v* I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
# u0 d- t2 H5 \; O8 l+ h5 ^# Rtrade-times-total( }) s( i: _0 Y* B  g; g$ b( W4 Q
;;
与当前turtle的交易总次数" ~  i8 _' x) Z& J7 p( i1 s
trade-money-total: P$ Y6 s$ W7 t9 S6 A
;;
与当前turtle的交易总金额! s, I. ^# z% P9 Z
local-reputation' I$ {' a- w0 Q/ f
global-reputation6 V0 g$ I7 e5 t+ \
credibility
$ V4 J: H! \3 O, L/ {- v9 ]1 R;;
评价可信度,每次交易后都需要更新9 g; A. _/ V' T  }
credibility-all- I3 [5 o3 d- G: V# U: p2 [  V! g# i
;;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
( a* m4 w' n7 B- H/ v8 E$ r% m
;;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
) d* o- Y6 Q* L  I' M2 Acredibility-one, C. r' Y4 l" X2 H
;;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
+ }! @+ Y% f7 G* I/ P5 Kglobal-proportion
3 t' r  J5 K$ q) ]7 xcustomer
* K; d& f9 I# m5 O2 L3 Gcustomer-no' L& I' c9 w+ e6 ]( N
trust-ok
! k# L1 G1 g, T& }" qtrade-record-one-len;;trade-record-one的长度
- ~- w0 j  S5 Y. m0 Q]. L. q4 K6 T( S" Q' [  G+ J
; m3 O+ K8 o: i: d% v4 D
;;setup procedure# M# `) d1 f4 ?; Q  M. X2 N
9 h; ?4 P8 B% x3 d( X+ `% C
to setup1 @) }' Y% ]. J4 i) s9 u# u+ x
" b+ H7 D' g* @) B+ }! [
ca
& s6 \" @$ e9 i6 ]- R# y  U
" ]) I9 G" K+ r3 I' B
initialize-settings
* r6 u3 W" O7 f- q3 G/ ~& ~, @

  D5 c7 e1 b- B% P4 _3 jcrt people [setup-turtles]
* U: F, R, j+ h: u- N" K# T. V
- F0 Q, q, [3 Y/ f
reset-timer

! ^# h7 [3 _) p) A( Q
* o, t8 P" B- v7 H. x- b/ h6 Qpoll-class

/ m  `" u! W/ A4 P' B4 j4 Z$ n# I8 u' H. q" ^
setup-plots

7 `) u! [5 `4 T; A
  d5 k' e6 ~- ?2 L4 W6 X+ E* j$ @2 W; Ado-plots

, X( f# C6 ^  H8 W2 a9 Cend/ g+ C- E% K/ A+ }
* C" Q4 z% @/ Y9 U6 u
to initialize-settings4 Z0 b0 r. X  _: s# u* i0 }
( E; N3 x0 g) b; ?/ W- ^6 n: y
set global-reputation-list []

; ~2 K0 S6 O* i/ }5 o0 ^3 n: g% `3 |7 Z
set credibility-list n-values people [0.5]
9 v2 ^% r" d, z$ h. M2 ^% O+ C  D, }

- S9 V3 x0 K0 j; xset honest-service 0

% ^! R: `2 K5 l# |; ]6 v6 F9 d# l. ]. J- P) K# M# \
set unhonest-service 0

' v" G+ g  Y* Z; ]* L2 g9 M. H1 S; r5 ^: e" _5 o
set oscillation 0

2 p- l( F3 L+ [2 j1 w
6 W' C6 J$ P$ t2 bset rand-dynamic 0

& `+ n  g7 e+ X, V! i7 Uend" f, f; A2 B) G4 G& z+ g

/ c5 B& D+ A; v; q/ mto setup-turtles 9 u! }& F( [( R* \, G
set shape "person"
" F, t$ U7 g( Z: k7 e4 O' P4 j3 Zsetxy random-xcor random-ycor
: |/ a# E! C9 P7 Aset trade-record-one []
$ b# [/ R/ ~& K" _
- P, w$ \8 H3 `
set trade-record-all n-values people [(list (? + 1) 0 0)] : a4 c% [* o7 m/ _

) U4 K5 n( ]; Y. F: ]9 a, [set trade-record-current []- j* q! p+ j/ M* ~, ?
set credibility-receive []
* S9 @$ I. ]' R9 O8 n; D0 ?set local-reputation 0.5
! L  R, r( T- o  G# e; Mset neighbor-total 0
0 {( r$ y2 k* Oset trade-times-total 0+ K# H8 h. b2 `8 J+ E) J2 n
set trade-money-total 03 G  n3 m5 X3 W
set customer nobody
) r, ]$ O4 t1 t! G& mset credibility-all n-values people [creat-credibility]7 ]( D+ S4 y' E4 T( T
set credibility n-values people [-1]: R  {7 N* L2 u1 Q' R
get-color
+ U/ C' D0 R& u0 v: l$ g. v! i* X- a

' a6 Y/ ^$ K& C8 u: nend
: b6 V, D! k. ?+ ^* i, ]
3 U# G; m& U4 K% b5 _to-report creat-credibility. B+ e) z) c. G' K+ h
report n-values people [0.5]9 y3 d/ l, M2 m* v$ M! m
end
  F. \- v5 s9 S" h+ @
3 D0 K" |: x4 B: K5 l5 R) u' y% Mto setup-plots/ q* ~% e7 d/ v8 p% N. F

) ~+ C" e" M/ r. x2 J8 t5 p8 n7 V$ Bset xmax 30

" A6 j4 k& E4 E( p% Y8 q# u2 Y& D
4 [4 M: K# z4 l6 ~- L7 V- Y" i. [set ymax 1.0
4 S- C! T& v2 K3 f- h) j6 M

, w" b5 b0 S( S$ p7 a) ^clear-all-plots

* e- D+ B3 K2 X1 y  `1 ]" U% r+ Z8 }
setup-plot1
' c5 U6 o" R+ |+ P8 D5 u6 s  [  n

! S2 T+ T) ^  h- X6 S! J/ }' `setup-plot2
" O7 ]! N# @9 R) C& Q
0 l7 j/ I( V5 p3 @
setup-plot3

9 l' @$ l2 }& rend
5 r9 C! d5 p4 W' }9 j/ {' e3 |. y7 X8 W! u, N9 _6 r! n( f
;;run time procedures
, p# v( E5 Q" W( e8 T3 J' D% ]+ {/ r. I  C7 e8 X! Q
to go) G: u" B" ?* ?: [
5 I3 s1 \$ P! p" j
ask turtles [do-business]

1 I9 E( f9 p4 x$ Lend, {1 D4 _. W2 U+ K' \( `

8 V: x& R9 K9 i$ v3 @! v* xto do-business
5 X. m; M( q3 l3 }5 Z6 |

4 l' @! e/ k7 D2 q0 k! C, o' @0 q0 r. `4 L# ~: {
rt random 360
4 G) z- d9 W, @+ L* U8 n7 |

! J4 Q' A  k' e& D, D% C( e3 I* Hfd 1
1 d2 x0 Z: X8 r) n
3 `4 c& F7 r% R1 n2 i: J, d) z
ifelse(other turtles-here != nobody)[

5 ?; Q0 I1 t& \+ H' W! f# r9 O# P$ f, F4 ?8 D
set customer one-of other turtles-here
8 [" Y2 Q: K1 l+ r$ I
- L6 X7 ?" H2 ~9 f/ r, j$ ~
;; set [customer] of customer myself
7 n; g% c2 w" |- Y- Y# F

/ V& [' o0 @& r. W# u, ~! Zset [trade-record-one] of self item (([who] of customer) - 1)
/ L6 i# P/ z  p% L( @9 O[trade-record-all]of self
# d. w0 M% K; q0 t9 k# A;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' T8 R/ H& O; i% M( t, Z
1 @) S2 }0 S7 e$ {set [trade-record-one] of customer item (([who] of self) - 1)
# ?9 `5 e  x3 J9 F[trade-record-all]of customer

' W' g0 d  f5 Z+ [8 X* J. v$ Q
7 ~. t( e- h4 b' L, o0 F! dset [trade-record-one-len] of self length [trade-record-one] of self
5 g! c9 ]+ P! E
/ I4 x$ T, U2 y, s# I
set trade-record-current( list (timer) (random money-upper-limit))
9 A. l5 @& ^( e+ R

: t4 I& j7 t+ n, Oask self [do-trust]. c4 s7 G; ~, w4 m7 ^/ S& `
;;
先求ij的信任度- B' M& G1 E7 R

8 s( O8 w2 ?, [+ L3 E. q) `; @if ([trust-ok] of self), z9 E8 w8 e/ ?5 O
;;
根据ij的信任度来决定是否与j进行交易[& F/ x4 z9 l" }! h0 G1 y7 g
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& F: e( H7 }" s; l7 S, H5 m  s+ f& b7 R9 M
[
6 s; Q. u& m7 s

- p  t( w1 m. K) Kdo-trade
; W3 j9 N( E9 [7 `; ^

. p+ ~; P' R( g: Nupdate-credibility-ijl
5 A: f( L! `$ Y: h! S% S! ^. n6 E1 m

( T+ i5 E" h, Tupdate-credibility-list
! C& H9 |3 G& j9 B( G+ N
% s, L+ \, d4 e" A: @
; J7 S+ U! G% e% ~7 z
update-global-reputation-list
  `- d+ J; e2 }5 t# n' R- x
9 s5 W+ n) J# f
poll-class
" I7 W2 M! X9 u/ E  P6 D
0 J3 M. X9 [- H% z6 C; ?2 u, e7 _
get-color
7 e9 g) p2 I7 B  o3 {5 v4 h3 I

3 K( v- R$ s$ `& x% N' w]]
; m- H$ m1 [" h1 q5 x; t& p
1 y! W4 c- E: v;;
如果所得的信任度满足条件,则进行交易
; c" P" N2 e4 F; t4 [9 M. c2 R
) o8 C2 z1 K3 |& t) Y% a[

# p- Y& @; V& M, [6 U% `+ \# V$ ^
8 c7 {$ p$ f8 E( s) m: }6 Vrt random 360
3 n/ b! S* L% ?. A: f
! w2 c$ o5 J1 S9 m( `
fd 1

7 T* d$ b8 ~& Z5 B% y, C$ [/ a" {& Y+ M7 l
]
2 o; G* f& G. P4 F
/ _9 y: H8 M9 c# n6 Q& ]+ N2 L
end
$ p- o% d3 {0 F" R1 t

& l3 F5 c# B1 }& k- G5 Ito do-trust " ^4 Z9 m$ l: m* w; w1 @
set trust-ok False
0 {8 v, U& w3 K% n$ g: x9 K2 U$ c. L& ?

# S6 ^( H$ A% \% E2 blet max-trade-times 0
3 ]# P) _% p& c6 ~( Q. jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& g; C; u6 [, @  w* T& m" W
let max-trade-money 0$ o( c6 _% v, u" ~9 T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 O" `+ z8 `- H' b$ C% V+ p( @( qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 x4 z3 P  E' D4 J4 V( p, D7 T; K4 j6 E. N
+ q1 R% L' @; x& I' r, X
get-global-proportion0 q; t+ A- k/ a5 a  X0 O; M& _. V
let trust-value2 ]% x$ f$ i- w8 \
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)
4 v2 p) h, F1 X$ S
if(trust-value > trade-trust-value)
9 ?  `3 p7 C* v" k6 p6 p  R% E[set trust-ok true]# Q7 \, m, M# }' G9 B9 a
end7 b4 K" f: y) M# p0 \5 _  A  ]; o
$ N: S% d1 Y8 S( P6 ?; C) M% I
to get-global-proportion0 |' u/ A" B# w# C! k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 j6 G& W& g- B( q: v[set global-proportion 0]
7 F* r; H3 b. K/ c[let i 0
7 U. a0 D, x0 h5 k: _let sum-money 0
2 I; E. S. K6 V4 U, x7 @$ O; vwhile[ i < people]6 B/ k' B5 {! b' O/ F$ C4 x
[
% m$ z" U. ^8 o; t2 a. C8 }: Gif( length (item i
% m2 n4 C3 U0 G* R# S[trade-record-all] of customer) > 3 )
5 P% ?# D7 ~4 ~. O! D
[
: ~, M% P" X" tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, x$ ~7 I4 W/ S/ N; f]5 N( V' H1 r+ Q
]9 g" r- V9 p& x$ h3 y
let j 0
) u3 n' v: d- d6 K9 ylet note 0% g4 v: v, Q; N) |7 T, U( q/ N* G3 Q
while[ j < people]
8 H% a9 J" U1 K0 c9 W& l* g0 m) S, c4 A[
+ J& M' y( g8 Q, t" T% u$ _9 Oif( length (item i9 |1 C3 j" N( |
[trade-record-all] of customer) > 3 )

8 H: Y! I  _0 f+ f" ^[: [" N! J) k" ^; W: y; g/ r; }4 ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. ^8 U( C1 l5 U8 `3 l0 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 r" Z- A, |, H9 o7 t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], S# J$ |/ i" L' c
]! r# A$ @, |' K9 j/ _; Q1 ~7 m5 ~
]
6 {' k* k5 ~. ~9 zset global-proportion note+ `. d2 E: j; r: ~- @& y3 u: Q! |$ v
]
& _3 e2 ?- v2 m1 ^' [/ `" c0 S0 Vend- I0 J4 {4 `/ v
9 M6 }* E0 ?  o$ J& {) i
to do-trade' j4 R" g; n( `" _1 C$ q% N: A& @
;;
这个过程实际上是给双方作出评价的过程
, Q* a0 i: ?) k% ~6 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
+ J' s) y. [) Z% H$ a9 \3 uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, M5 C! C8 H' u$ w9 w4 ]% D9 g! ]set trade-record-current lput(timer) trade-record-current
3 i# D. h' e& D: r;;
评价时间
8 J/ i2 W: p- k5 hask myself [
; A4 m8 t  U' n" w& G, P+ eupdate-local-reputation
  [( p! i4 Q: t9 vset trade-record-current lput([local-reputation] of myself) trade-record-current# A/ A/ `2 O( O: S* x1 r. t8 A
]6 J9 p0 T8 C. O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself+ w1 h( d' G8 _2 U% a8 y
;;
将此次交易的记录加入到trade-record-one- v6 M0 `- R4 n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! F( M4 e4 }8 B6 v3 Y  olet note (item 2 trade-record-current )
: Y5 d; H# E3 F  v6 E, `1 p) \set trade-record-current
& L- f- u9 ~- W* Z+ a8 \( ^+ \(replace-item 2 trade-record-current (item 3 trade-record-current))

' @2 B5 ]/ P6 e! Qset trade-record-current
; W5 \) c/ l# z8 Y$ `5 \(replace-item 3 trade-record-current note)) H% D" X  ]$ @
) }$ \9 d, J( m( a3 V
9 K5 V1 B; q! |& z& r4 Y
ask customer [
* {4 a' v8 m  y: {update-local-reputation9 d3 S4 k) S: G) ?, n% w* f. x% g1 Z: S
set trade-record-current
* O* T, O, g: a9 p9 i/ x(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 b6 H8 X# D8 C" b" ]; @5 m% y]( P, @$ a1 N( v, m0 j1 b8 `$ w
8 [/ y0 n0 g% D" Z

: X1 A. j+ j6 p3 |) G, N' m$ Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 c- s, j# z7 Q2 R. b$ X8 h

8 i. P  r1 ^8 X! j! P: g3 J$ m. Xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ R$ r8 m. ]5 k! M% f8 L
;;
将此次交易的记录加入到customertrade-record-all7 \% {. [# P  ^5 A, C; |, {; Z7 d
end
3 h8 q* r' g, S2 d# C! e' r( z# s3 ^
to update-local-reputation
  A3 A0 u0 ?/ C. T1 ]6 E3 Jset [trade-record-one-len] of myself length [trade-record-one] of myself: L4 L  z) ]/ D$ U% S* ~
, i& p2 ]" w4 F) e+ s, G' x& a" V
7 K2 [' g2 f% G
;;if [trade-record-one-len] of myself > 3
9 T4 u! {" p8 e, f, e3 D
update-neighbor-total% Y# N9 X9 \' F' F, |
;;
更新邻居节点的数目,在此进行- z* h+ q( _0 o  O' ^& ]+ [- R# B$ U
let i 3) e+ F0 X+ l. f9 H) w9 r! `
let sum-time 0% |, P2 R8 \/ X6 x& s. }, A1 H
while[i < [trade-record-one-len] of myself]1 h5 x9 R" B; V, O" f  t7 X
[$ U% S1 s/ o, ?) Q! |) v2 `
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 F$ ?  {/ I7 H8 ~( D
set i
; p/ n" A2 q2 L& d( i + 1)

; O) x' `2 l. w+ F, G]. U" w% g, o1 o" _" G
let j 3: B  N( `6 O. Q5 `
let sum-money 0
7 _$ o" u4 @" R  o/ J. Swhile[j < [trade-record-one-len] of myself]: W2 }2 V( M7 r/ [7 V+ V
[
  b" K/ T7 ~8 Qset 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 l; w/ \# z+ aset j; C- h9 [9 e% Z: L9 }- e
( j + 1)
. p/ z( P3 h! P6 h6 p  ^
]
$ u* f& D" \6 J% rlet k 3
8 s" U  C7 D/ Q, ^let power 0
& m( v7 ~! \  c6 c  a9 W6 Tlet local 07 S# [7 l. N* Q& F# a
while [k <[trade-record-one-len] of myself]5 T7 `0 R- S7 A2 K7 d$ s2 q) }& k
[
3 u/ w" Y9 G$ }7 N9 pset 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)
3 J' w, v+ P3 j2 t4 S0 f/ k: hset k (k + 1)- G' {4 a/ r! a: k! K* ~9 g% P
]
2 o4 n: H6 l. H3 T- L8 R# M7 nset [local-reputation] of myself (local)
- B+ L; T+ d; ]# l: E5 F6 Vend# {  y1 a, v* t- V6 i
! N% F  d# _# x& s+ @0 |
to update-neighbor-total
8 [2 [/ X, @7 v1 y4 X. v: s+ n) S- A& e- |$ @
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 s# f0 b2 I" [7 B5 }  c6 y

1 _' x6 _- D! M7 B! J! a$ e' o

" k5 S4 |8 l6 P- O) @end1 e1 v  P+ E8 n9 T0 @

1 C  V+ `7 g. nto update-credibility-ijl 9 |( `3 ^$ J' i+ d( B

% {8 d) a. C5 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。
+ P2 s9 J! f7 s$ Qlet l 0/ O6 z+ s; ]( x' L% g9 Z2 v) T9 T
while[ l < people ]+ n( T! Z4 w3 Y1 u8 y0 |( ]
;;
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! t& N. I2 X6 Z' I- M6 u
[' r9 Q+ T# K0 \
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 q. \* W5 m0 l' x8 R3 v" I" I& Vif (trade-record-one-j-l-len > 3)9 @/ F/ O4 b8 D$ 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
9 u# F* d' q1 r; r  D4 Xlet i 3  X: U1 r1 R6 d, Z. |# D
let sum-time 0
( @2 h+ b& `8 p& }" S# p$ m: e" H) Nwhile[i < trade-record-one-len]
# d1 p# J+ x8 j! J# d[: ]/ ?4 c1 P3 E/ v+ i. B
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 g" O5 U: a* M: R3 x! k( Z' `" t
set i0 u* }1 j0 R. U/ ?1 J
( i + 1)

! D/ ^  O0 |3 n7 }( E6 H]( b/ o' t- V- v- C
let credibility-i-j-l 0- K  U% Z1 w# p# i
;;i
评价(jjl的评价)4 G2 ?4 V$ u+ \2 h9 ^* g; F
let j 3
3 @/ Y0 p" s1 v9 X2 Vlet k 4
4 n) O/ t! b6 {7 D  p. zwhile[j < trade-record-one-len]
9 Q! t$ s7 i" E! V  H) O' @! }[
# F  J, h8 k. h% R: ]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
) Q% N& E# B  Y% e0 |" M: qset 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)3 p- W( e  a- E2 b  S4 j
set j! V: s0 l: Z! S# l& I
( j + 1)

7 j! b8 i+ |( L7 A0 n4 _9 D]$ \* }  h/ P2 e# \( p
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
& y% R/ v/ H1 F* L9 Z- h
0 c5 [9 j3 B/ x$ X
) f' w2 p, E0 E: D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 v) W8 `0 ]! c! v- M. u: x;;
及时更新il的评价质量的评价* q# N6 r7 j- c. O2 U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]0 m/ K% U( Z. v, l
set l (l + 1)& [  i+ V& V' u' p5 u$ ^0 q
]
- R& \) y! Y; ^( |end
1 n; h3 _9 @5 T" V8 E$ U# x* I
- Q3 O) u+ Q% T" p6 j, [to update-credibility-list
+ y( n2 o! d! @) |let i 0
% N$ O( ]8 [. A: K$ ]5 ^$ twhile[i < people]
, ]/ Z, |' u# v8 A7 R% J+ t3 E$ S; r[
' A" n% E: r4 U7 t2 N/ p1 h0 E4 elet j 0" p0 C/ T% W6 ^8 z/ x
let note 0! l+ J& ^* k% Y$ t3 V
let k 0; b% Z; a& w8 v5 b! O  E: i
;;
计作出过评价的邻居节点的数目1 b6 \4 T7 {; t6 c% W4 G+ u2 N
while[j < people]
, a" v% ^  n+ l: @[
/ K  s) c& q  Z' D8 T: V! Hif (item j( [credibility] of turtle (i + 1)) != -1)+ j& a7 B" s! l: _: L
;;
判断是否给本turtle的评价质量做出过评价的节点
1 H/ x6 E+ A2 T4 \, D" l; W, \[set note (note + item j ([credibility]of turtle (i + 1)))# j$ Y9 B7 x  Q2 |6 T/ s8 v/ n
;;*(exp (-(people - 2)))/(people - 2))]

$ H* E) t0 x& K8 B; ~4 E& W0 Yset k (k + 1)
; y0 [$ B' K1 H% y7 }/ A3 k: I% n]
  H, _% C9 ]# bset j (j + 1)
, ~; L7 v& D) P5 O9 w]
) i) O$ q  y8 @- B4 {set note (note *(exp (- (1 / k)))/ k)
: t$ E8 P5 }$ D+ g$ A; cset credibility-list (replace-item i credibility-list note)/ q& @$ i- V* v1 D! ^
set i (i + 1)
2 o7 w8 g2 N# i$ D" C3 _]
$ B) j" a8 y& {7 U. Kend
: H1 n8 u! R6 ]/ Y
* C( o6 ^$ @1 |( c  S0 |; Ito update-global-reputation-list) o. E! L7 a1 F" n9 ?2 R8 T6 m
let j 0
4 E6 ]0 a" t% M4 r) b1 l% Cwhile[j < people]$ K+ n8 I( M% E3 a/ j4 o
[
2 p: I: i6 }+ ?- A! p" ~; vlet new 0! W8 L$ z' c+ D/ C: ]; }0 H" O- m
;;
暂存新的一个全局声誉
1 j- \+ z( A; D& llet i 0) l- t5 Z3 p  H5 b7 ]- b4 L' H0 X# b
let sum-money 08 _% b' X/ X$ `0 z4 N' J
let credibility-money 0* l, o! S, [/ g! V& K$ f7 k/ K% c+ Q
while [i < people]
6 r1 d" ^  o! Z[9 w6 [+ g" s, B+ U. I+ t( S8 c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 _6 h7 W- t' ]$ q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). p$ w" }3 O  c; Z
set i (i + 1)
) A# l8 a9 _$ J. j0 |; I]
0 B* D' o4 b$ \  d, J/ A7 ?let k 0
% p' d9 _( @, J" @. Qlet new1 0& R1 @8 _  I3 |$ ]1 u) S6 H) I) k
while [k < people]
8 [5 k0 u  k, a; f' `+ A[
/ Q5 ~! K8 Y& O' rset 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)6 R2 l4 m, P- N8 N/ x. [
set k (k + 1): D; f* T2 o+ E& b* S" D3 O
]5 }9 ]5 W( ]5 D! X4 G4 G: U! @5 e7 G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! f4 l" R+ I3 ~0 f' Aset global-reputation-list (replace-item j global-reputation-list new)
2 z6 t" t& y5 Kset j (j + 1)- m. N- j) o4 x2 t* u
]
3 l4 Y* W5 M" _3 ~' j7 tend  X, d3 c7 I4 Y. a" J

% z1 `+ N  N6 A
; k2 N8 Y8 H: h& S/ m! C' h. \$ H/ ]/ w: c; U) {
to get-color
% q+ s0 w9 ^! ~/ L' q6 d2 k4 Y0 P, H; O: Z( e5 q3 c  a) o
set color blue
1 ^" o& ~* x2 }6 L) u
end: x" A. U5 n, \$ }3 `, h% z- S

! q" n6 N* R1 ^to poll-class
' D, K' m2 G! V' i! I% e# dend
7 d/ b$ l* {8 c. @
- B, m  d" D5 W2 p3 yto setup-plot1
, I* q. K: }* D4 \% v/ b) Z7 z: k
: K/ C# V# m* t. C6 P# jset-current-plot "Trends-of-Local-reputation"

7 B! K# X+ N- T" E5 L) {5 C7 R3 K, B! x/ H1 ^# x6 w
set-plot-x-range 0 xmax
( b, b/ ?2 x8 U7 \4 R  _3 @9 g' ]$ U

" s/ O8 B3 `0 P2 k) lset-plot-y-range 0.0 ymax
9 B1 o( D$ @8 R* `& I- V  T
end
7 x6 r% Y* F, @6 Q0 a! d1 Z' T7 d# e& A/ n: B$ l, H
to setup-plot2' y* N' R+ T  y" m! ?; @

- k" B+ p- ?- d: e* wset-current-plot "Trends-of-global-reputation"

: _/ Z/ {8 T1 V$ Z7 x2 Y( ^  }
# V2 c# Y9 v2 Y% q) Uset-plot-x-range 0 xmax

) w# Y+ {/ {+ k7 W; z
/ Y$ r! u' v4 }  ^+ ?& p0 kset-plot-y-range 0.0 ymax
+ O* C+ P3 Q" C9 z  V: c
end
! Y/ S% z" U# y# w$ t2 o; L; e* @; j0 x' `' _% |7 q. {; C- Y0 u7 h% c
to setup-plot3& i/ r) B6 C; V! v$ q+ w

5 Q7 s. `8 C% Q( ^- P+ V; K! T. a1 kset-current-plot "Trends-of-credibility"

7 q9 C+ q- V5 X: `  a1 E- w0 N2 t2 b8 ~7 J; \; S5 e# q
set-plot-x-range 0 xmax
% g% l9 Q5 W7 f7 ?, ~8 }

4 Z% L0 V/ d' B3 \' @# r, Vset-plot-y-range 0.0 ymax
- ?0 g) d( {% d& g2 e5 @% Z
end
5 W" i# k  h3 Y, _8 ~; I! R. }  p6 t) l1 m; ^
to do-plots" x6 H  K% d0 @3 s8 j9 I& J
set-current-plot "Trends-of-Local-reputation"
4 \2 f; W1 X4 `1 Yset-current-plot-pen "Honest service"9 T/ e7 u5 z' i8 Y8 ~( t! T
end
0 M$ K4 v$ q9 [3 o9 Q8 N" M5 n7 Q8 O: o
[ 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.
; M/ I  l2 z) y; o% I: U
/ [' N2 ?0 {1 ?7 H3 U/ q' D, O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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