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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:
/ u; u: C- e) D5 l+ ^& Fto do-business # {8 y0 ~  Q; a; @- j( ]( k( X
rt random 3602 B) s3 @  x3 J+ `& D1 M
fd 16 J7 P+ K- N9 v3 {" }* I
ifelse(other turtles-here != nobody)[+ p. J5 z6 j8 F/ C( o9 o
   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.
: N2 u" U: J5 L9 j2 S   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " V- I; o& k/ w/ g7 z' A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 o! {" b8 V" d6 u) r6 t
   set [trade-record-one-len] of self length [trade-record-one] of self' r: Z! j/ w" B- Z" w3 u
   set trade-record-current( list (timer) (random money-upper-limit)); t8 @/ S5 i& x, i

" Y; U$ G: O8 s: G$ u$ A1 O问题的提示如下:
. i0 l$ a' }( N$ _* s
; G1 I3 x5 Q: @1 b0 D2 _error while turtle 50 running OF in procedure DO-BUSINESS
/ O5 `4 E$ T6 E  called by procedure GO" F- L6 h7 P' j
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 O1 j7 n  Z$ ]8 t
(halted running of go)
: J( {# H: u/ j) m0 Q
" L& D! B3 ~9 j' b0 o  v0 }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~~
) C! Y, {. c! m! y. J, m( W! D* F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
' I  g( N2 F0 Kglobals[/ p: @8 X5 y2 v4 s! z" Z
xmax) d: S, B7 a4 b
ymax/ r: _& x* @* Y4 R9 @: p
global-reputation-list/ ^: r0 {7 D+ Q& d0 \: @
/ T7 u/ G7 m8 S2 u/ l8 p
;;
每一个turtle的全局声誉都存在此LIST
) b% @' d$ \9 f$ O1 S$ a5 b0 xcredibility-list$ k$ R9 _" u( s
;;
每一个turtle的评价可信度
' a* n/ p0 H. Q0 q9 J( D7 Hhonest-service
2 `6 d7 D+ H0 K* @6 _# O/ Xunhonest-service# ]; c- g1 ]& e  E! p; A7 o
oscillation& O6 O$ G2 U1 f  S: g3 `2 j- e
rand-dynamic! C8 ]1 u  W  u, l8 y  P
]
6 m3 p& E3 A, V" x9 I! L
* q: g5 n' E/ l  w. Mturtles-own[9 e% R/ z' A3 n8 y3 A* |9 ?
trade-record-all" |. R  V1 o$ ~& F
;;a list of lists,
trade-record-one组成
/ y8 L: M# f1 I- l% s, ~8 W  Qtrade-record-one
$ D  \1 p& F) \8 X$ k3 E/ e$ N;;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 V$ I# h5 ?

) X' ]+ |& O# F* |;;[
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]]4 j, s* A6 W% O
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]' Z, L" J, y( 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& }# p; q; q4 s4 f" ~' W
neighbor-total
3 Y' J* O7 ?2 N$ T& _;;
记录该turtle的邻居节点的数目
  @9 M/ h2 v7 T) Ctrade-time
0 |2 v3 l8 n9 f: B0 N;;
当前发生交易的turtle的交易时间
( e3 o$ J" C$ ~  Lappraise-give
5 p7 L7 e7 O% X* b5 c. J: c; A;;
当前发生交易时给出的评价
" [% h3 `. Y* Vappraise-receive
- ?, [4 o9 a! i  q, Q  t% c- q;;
当前发生交易时收到的评价% ^$ g9 T5 E. L9 g5 g4 ?
appraise-time3 S# g. K3 ~: w1 C
;;
当前发生交易时的评价时间5 p+ L" q1 V; y: |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& o4 a# F  m9 h0 P: w6 m
trade-times-total/ e' t& @( h# m- w
;;
与当前turtle的交易总次数
+ f: s0 O( w9 \- b" Qtrade-money-total
/ |5 X4 [" K0 O4 s% w' P3 e( q;;
与当前turtle的交易总金额
: u( s4 I" W; x) _5 ?local-reputation
# S2 V* P- ~2 C9 G7 H3 Dglobal-reputation" _2 G5 b  c: x/ F9 T
credibility  Q! \' ]! q. R- T' Z2 N6 B
;;
评价可信度,每次交易后都需要更新
3 H$ e6 ~& H5 }# z4 C& J0 o% @# A; Zcredibility-all& C% p6 I6 P% o5 {: 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
+ _* C' r! C4 I
) R0 Z, T& W/ e, u: [* r;;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
+ v8 ^: o; I, Z+ H& U& k; J% @( pcredibility-one1 `. J" \& f# n% c7 L
;;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. ]/ O) X9 T2 F! ?& _
global-proportion
1 L# k3 G3 Z, U  [  T' c4 jcustomer3 w1 r2 ~- @; e& A# E
customer-no
& h$ U" C% @' Etrust-ok
. y: U" V) D* n: t# ?9 l7 ]% S9 @trade-record-one-len;;trade-record-one的长度
2 r6 @; K2 m1 r) q7 _& V0 c$ ~]
9 Z9 |; \0 h+ u- C4 ^1 V" c5 m5 D# V
+ r7 O! g: Z- D' G8 k;;setup procedure
+ F" C( j/ g" n0 T/ l+ @- v/ |9 ~6 f5 C1 D3 H2 J8 A' @& i1 ?
to setup
2 ]+ z+ ]5 |8 L6 Y8 r  h" ?
+ y1 V& y% ^0 r) xca
3 N( @: R3 s; y8 j, z, i8 h/ y

8 V2 W6 q: s+ d1 X' Finitialize-settings
- u+ d* W* x; G( \/ g
: s: B; C0 @4 z
crt people [setup-turtles]

' V+ S2 T3 g; A% {9 D1 v& e5 G$ K, V2 i8 Y! M% o1 j2 S
reset-timer

* O. C& T2 F$ r: `1 E+ Z6 c6 I* K
- L2 |5 E/ G5 I' m- hpoll-class

! v* Q7 \) l6 V3 Z# Z+ i* x6 d
* X, e" |/ d) B  ~/ G, l4 Q- Usetup-plots
1 I, n; T/ T- Y  p, N+ W* j
2 \0 T9 ~# b: O5 \8 K% h3 t
do-plots

) \9 t3 m* z7 X6 Q$ N6 Eend
3 }; }, X) j% \& K+ t; \# P6 J  Z: Z0 D( p/ Y% Q
to initialize-settings1 _8 B+ D% N% |) a8 p

$ H( g5 F1 `# {7 ]; Sset global-reputation-list []

% U/ ~: t+ I; @5 s
" E* Y! N+ c7 u4 }0 N0 l4 gset credibility-list n-values people [0.5]

1 d) R' `1 l' j4 z9 S" h4 @
$ F/ q0 A( ~& zset honest-service 0
  z. t* }4 r9 `! @5 u/ m8 [9 e
/ Y2 `# {2 `7 T! X% V" y
set unhonest-service 0
* \# {' y: P. e) V# H

3 v$ a& ^' A, ?/ K/ Rset oscillation 0

7 Z0 ?+ P: i( m+ b6 u) x  @0 M5 b5 u4 s2 ]3 Y4 {' I: M
set rand-dynamic 0

/ X- g4 A( N- U! ~3 c7 `end, [# J" W8 ]1 h& p1 ]# Q
, q, W  z+ j5 q0 d4 x9 W$ c
to setup-turtles " m) ?2 l8 o! g0 ^, f& |
set shape "person"
+ r/ q" l  c# qsetxy random-xcor random-ycor; t# A4 j7 L) t4 _1 I: Z
set trade-record-one []) j1 O4 t: a# \) I, Z0 [0 T9 M

3 k# T! O4 Z1 [! `( O( ?/ R# }set trade-record-all n-values people [(list (? + 1) 0 0)]
5 X% y9 ]% y) O' s5 {3 R

; G) L8 [7 H9 S" b# ~set trade-record-current []  [% j8 i& c. j
set credibility-receive []
; o! m# W( j5 n# O' t0 R) cset local-reputation 0.5
: }8 a" S, N8 y( {4 D: Jset neighbor-total 0! N4 k( l7 d& ~" D5 T8 h
set trade-times-total 0% M+ _5 F0 D% n, D
set trade-money-total 06 t2 ~( [" _5 `( f/ {& A  r- I/ Z3 A
set customer nobody" t7 ?& F4 z2 C8 y
set credibility-all n-values people [creat-credibility]
8 ?3 U2 P# l5 m  m1 e- ]  Jset credibility n-values people [-1]6 _/ W  ?; b; N" M7 t, b
get-color
) y# y: h+ [7 p. o3 H

6 C# M, a$ K' n5 l& n) E- pend
# e- ?( [/ \& x; \* t2 M& a6 t  D1 f' M. E
to-report creat-credibility
6 Y# Q7 v  w" N: a* Z. Xreport n-values people [0.5]/ y3 L3 g% A3 g8 W* f
end
4 S; j& @" n9 T3 P6 @
' S5 v6 E: @  s2 Nto setup-plots$ G- x6 k' [5 ?6 @9 Q1 [
8 S. O8 v7 l  O/ I6 \
set xmax 30
$ R5 f. [; ~6 ^9 a

6 @! X1 ?5 y  V: E- Zset ymax 1.0

+ o2 \+ H6 S2 {" m+ @- M! T$ V2 B1 s" L4 `3 e; _8 V3 b$ a+ y
clear-all-plots
$ @& w; I6 ?8 n' |: K$ e6 a, F4 D
# z' {: X' f7 E+ [5 M  E. E
setup-plot1

0 `! T. L7 T1 D+ V) c8 b1 o0 F) |
setup-plot2
/ H0 N) |  Q1 t
: V! D* x% R& ~2 G
setup-plot3
4 t0 U" I- k. O3 p
end  H6 X' b4 a$ P' c3 {* A, Y
6 f. ]! h6 g/ h% Y  K) R
;;run time procedures  W: L- H, r( A% }4 J
' }* e  l! _& Z; l9 o' z
to go
: |  r% b# x( X( w; }3 e
1 K3 P$ t: b! A* {2 G. [& h4 X, Wask turtles [do-business]
* _/ O9 M0 K1 M" n( j
end
0 N' n8 v, E& f: F) Q
% p) d- k9 b1 P1 d0 |to do-business 2 O6 _2 U- b( E# p$ u  F
& ]" {% x7 O  @! G6 o$ d

* ^' Z4 x, K4 q) J) Y- s/ Qrt random 360
7 }3 h+ T6 t& J6 ?
+ D- @: t5 i3 m2 \
fd 1

. E1 ^# {, ?" F
5 R) v" |& k& e8 P- M( m; lifelse(other turtles-here != nobody)[

0 s, W. _  Y/ _+ @/ t3 d# _8 q. p  Q4 |- x  a& [- ?% A7 b  ]
set customer one-of other turtles-here

4 [+ u! K3 ~% X
& b5 j; X' p7 ^) x' N;; set [customer] of customer myself

( \! S8 V% G# S" X" m! p. ^
+ J7 }% t4 ^  g. Y  Rset [trade-record-one] of self item (([who] of customer) - 1)( D, C6 H& T+ I" j& O0 s" u
[trade-record-all]of self. A2 c6 @1 w" v8 n2 P& T9 k& `
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ Y3 n, j* @% E' T% a7 T& }

; ]$ A/ [: W4 M- U# Y: S) yset [trade-record-one] of customer item (([who] of self) - 1)* r8 m. y) D: c  j1 K
[trade-record-all]of customer
) [: ]" R) J8 W

* v# l# i3 o/ H& I: b/ W8 w2 W& `set [trade-record-one-len] of self length [trade-record-one] of self
/ R2 i1 s8 @4 y. t" h  _6 J/ Z

& q: D. y( ^2 l+ e6 s# j" v7 Sset trade-record-current( list (timer) (random money-upper-limit))

/ B/ A  v, e2 J' f, }- b
3 k0 k4 H& x/ ]" Xask self [do-trust]
0 e! L8 ~$ O+ u+ N;;
先求ij的信任度* ^: U" N  V( ^* z7 V) c3 U4 O5 }
6 }$ m- I' R$ ]
if ([trust-ok] of self)% @: |: ^- t) y0 O& T
;;
根据ij的信任度来决定是否与j进行交易[
, o' z1 g8 h3 P; R& V# Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
% l4 B1 Q7 _5 s) W% m0 r" K. y4 _( \  T- M5 Z2 k/ g. W0 R! w5 s
[

9 I5 ~/ c$ E  m1 }: F) `9 ]; t3 A  {- c+ s: X2 R1 w
do-trade

' M% ?: u2 H' ]3 X# d1 b* Q
" A8 X3 T' Z4 j& @: S9 @. Tupdate-credibility-ijl

! p0 @9 U6 m/ l. w* r# L( `/ p1 e4 ?& l! s( O# }# `
update-credibility-list
% C2 n6 d8 Q9 A. Q
7 h* ]9 l1 X  e0 f0 n( I1 F

3 @2 c% _0 z0 f- V3 p9 iupdate-global-reputation-list
+ u& ]- Q: ?5 T3 K+ j7 W( t. J& }5 S
6 u- e, H8 l( M$ d
poll-class

6 q2 x4 Y" ^9 {9 U; F4 T2 l
8 M/ T2 b/ W2 ]- u  J6 _get-color
! r* Z$ W9 u. e+ k

0 v4 _4 }) J$ {1 ^  M. K$ `]]5 T7 Y& ~9 K2 x, o/ o4 h. s

* K% Z6 c- ^: F7 R( t9 D8 o;;
如果所得的信任度满足条件,则进行交易
" F6 W* F8 ^( M4 z" ]4 m% [1 P& U4 `9 q% x# T$ a! o7 p
[
' M" K; _+ g6 S, i. W8 @

9 b9 Z. s1 g* @5 Brt random 360
/ i0 v9 v9 ^, Y2 R4 @2 R) R& m
2 H3 }+ [, M& g2 J
fd 1
+ F; G( j3 ]8 z# K5 @  J/ C

- d+ T! w2 w( }]
2 c# S+ f* V3 L! m- U) k) u
" s7 F$ q9 c3 ]4 \
end
" y! C. G: s& W
7 [9 p& _) N" _4 @5 }* Y8 q
to do-trust 7 F, D& m: k6 E4 T) _
set trust-ok False5 K' W1 v( x1 d+ p$ g" p6 H/ i) _
" q0 Q( e2 f! Q6 u& t

, D- D$ v; n+ q+ ^9 rlet max-trade-times 0( `0 I. f  A9 f
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: Z1 ~7 U. R0 w8 C# P! t5 elet max-trade-money 0
, h$ N2 E% r! ?# l0 Mforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- r/ v# w! v. z1 _" x; S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* x3 {. b; h( i( s5 B% f
! A% T. U& f! J, M  s

! C- S9 I" u* g! yget-global-proportion# a  I" v! C: e0 I2 B/ Z- U
let trust-value
' y3 f9 L  A4 W  flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# c  G% y2 g0 V  G' l- t% Sif(trust-value > trade-trust-value)6 d# b# [1 _) V! E
[set trust-ok true]
& P" G0 ?1 |" p4 r7 S* R+ S- I/ yend; B, L" e/ T  O  b0 C; w4 O
/ V+ f. T& H, Z0 B
to get-global-proportion
1 U" q" C, J; S2 xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 j# D4 J( N, i$ q" g; u+ B2 S6 Z
[set global-proportion 0]
1 q2 s2 d0 e: T- \, D2 a[let i 0
8 z- B1 ]. u* m6 g' ^, dlet sum-money 0' T9 O0 G8 f2 m# _* |
while[ i < people]
! ~2 e& }- y- A6 X: P- [[) k0 a; G' a# s% H! x$ {$ S
if( length (item i
( s2 J7 m; G. c  I8 F* m6 l+ C[trade-record-all] of customer) > 3 )

. q1 R  [1 R& l  P% s[. U5 r1 m5 K9 `" G+ t8 e" u1 n9 y& \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  G0 {1 o4 \% ?" N/ x" K8 E
]) Z% Y) L/ a5 e" C& D& g7 ?
]
. q& Q% Z* `6 [, `& X! J7 Dlet j 0  x9 v% m5 m8 x" v8 p
let note 07 ]  _; i9 b  a/ ~0 C& G( G( ^
while[ j < people]
. N! v( _  ?+ ~2 B% n[
( f9 I5 H' i# |8 h& O- ~if( length (item i) Z9 Q% J% D/ v4 U- V4 Q
[trade-record-all] of customer) > 3 )
" S3 ~! s- K! t$ [8 z5 `
[$ c' ~( j+ u$ a# l
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ X# W8 ^* M* S( x* t4 _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 @- A( B% V' D0 r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 y  }5 ^" x! r$ M' _, w' I]
. G2 m, F6 q* j]% ~# R% n8 o6 K8 N7 v
set global-proportion note
" W: z+ n* f6 `4 k+ Y" G]9 T$ N" L4 ^2 _) K+ C4 C
end
9 s# x& g4 R# r: n8 j' T
8 S9 R5 o8 D' w# A: Kto do-trade" A5 F4 R* k# J$ {* W  u2 V  g9 n1 n5 p
;;
这个过程实际上是给双方作出评价的过程
  ]: h3 O. d( V1 T% I/ sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 G$ l2 ^$ j/ H; _& jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 e' w/ N' ]" U6 j: d  @
set trade-record-current lput(timer) trade-record-current
1 L% T: F$ j0 A& O9 g;;
评价时间0 U6 k5 o0 t" i3 ]- ^4 ^5 J  I
ask myself [
! P9 @2 \' Q( Dupdate-local-reputation
* L% B5 |" M. a& B& n, g9 \  @' P: Mset trade-record-current lput([local-reputation] of myself) trade-record-current! B6 }( B. o  t6 j* z
]
5 p( `, R* |# \" tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" Y9 ~0 ]* p* P- c
;;
将此次交易的记录加入到trade-record-one6 Z+ O* E& T1 f( S0 p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  y9 U7 n! X  f! u6 ~
let note (item 2 trade-record-current )
8 x1 T) ?1 P& u# L* f/ Oset trade-record-current: u8 ~' L  g4 Z9 v/ E/ G$ B
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 n9 C- A1 z# h
set trade-record-current
+ l5 D* c& X, K- [) C7 L* y, ^# Y(replace-item 3 trade-record-current note), V9 s. z1 C7 A6 t0 a

0 w6 S+ a  p* D7 D, U7 e5 c0 w
, ~3 Z* {3 i- E) t" [
ask customer [
: f5 j3 V8 t1 Z6 e& R# Fupdate-local-reputation
, u' j5 C3 t- sset trade-record-current
/ m1 D/ P! B9 S(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' u" b  T- \1 a0 I1 \]% a* x- W  b8 `8 b! D$ u  n( I
" F. I" O! q9 w( o4 [$ j9 d! x
2 C$ w2 J9 f; t" b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 p6 k/ t8 E. Q, j$ {
$ A, Q4 m* R' b. w) m
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' S) H8 O: {7 f/ P& d0 S, @
;;
将此次交易的记录加入到customertrade-record-all
4 r/ q. d2 H% x) wend
+ T- v# h! T, J1 s
8 g4 ]- d: \" F9 a0 Mto update-local-reputation; S* o2 [: E- m& O% C
set [trade-record-one-len] of myself length [trade-record-one] of myself0 z+ r# q. i, N2 M2 l8 |" T: b
5 w& \( u& T  @$ U- w

5 Z7 @- C0 K6 D( f' \;;if [trade-record-one-len] of myself > 3
6 w9 A4 C9 e% @/ m) K
update-neighbor-total$ ]- t" D6 g( p# i5 o; k4 m2 j
;;
更新邻居节点的数目,在此进行
. K, @; n/ I; h9 F+ qlet i 3( C8 P" a: n* T$ f3 [$ u
let sum-time 0
2 W  j& u2 t( B7 J, G, zwhile[i < [trade-record-one-len] of myself]. U. |1 m: w5 l+ [" O8 o- I* ~
[
$ K* r2 d0 X4 I1 K7 G% kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ r9 V/ ^$ A9 h
set i
0 W0 q% b8 T* T% o# W; c( i + 1)
* x$ V$ T3 w0 R6 Y# r
]
/ _9 C5 Y- V7 L& j0 M( V* Dlet j 3
: s( }2 w6 F7 w2 A0 E! l( s# Elet sum-money 04 D$ A7 o9 d* M! {) Y
while[j < [trade-record-one-len] of myself]
. ~2 C; J( g/ u" N6 q! L[
7 q) E% o; _: Z4 t0 C& V. ?3 B, @( Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
8 I( Z! o, r  Z  |- V( ?set j4 f5 ]/ Z2 Q" T  T6 Y3 J5 ?9 `
( j + 1)

+ K: q# o/ F( l/ X6 N0 J% V, E]
  n% O- L* d7 M  ~( E6 Plet k 3$ j# J1 D' u8 e& ]6 |5 f
let power 0
& I5 c" {. `" plet local 0" {; |2 ^* {$ g0 \) P0 D& x: [
while [k <[trade-record-one-len] of myself]( ^9 g& |. c" V( @& e% V! l  ~
[
! G$ P4 n% a8 y2 _2 Nset 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)
7 Z9 `) G. h- u9 t1 dset k (k + 1)3 V( j2 n4 W% Z* `
]
& N- H+ i" T3 H; ~set [local-reputation] of myself (local)
7 e$ @. F: Z  m2 Oend4 }! M& S& n0 t) G& X" ]
  T4 ]& P; ^6 d& k% f
to update-neighbor-total2 k. V/ q* N( I, U: V* V

4 m( ?) R. Z, W$ D" }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 g- Y+ L) s# _: \6 x& k

1 n/ O0 N7 t& T. O( s# _5 B
  }+ ]. V4 R7 d, u4 y) t
end' ]0 L1 f. [8 ^: L
: E/ I, V6 r9 `3 K& T) e
to update-credibility-ijl + k; \: s) g. R& M8 L% N! _; s
+ ^6 n9 w) ]: J4 s" \
;;
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。
% @& r1 m. X6 d# H2 Z1 G5 `. ?( M2 _let l 0
9 T& r/ g" w; Y& qwhile[ l < people ]/ M- P% {2 O+ k, Y  I1 G# _
;;
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' @1 B1 X' t; R" I/ U& P( k0 D, E
[/ u* t0 m3 F' O; t+ y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% [: M& m  J. r# X, kif (trade-record-one-j-l-len > 3)
6 y; f, w7 S" c- Y, s+ ?2 _[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
; ]& O2 ^4 ^) T% V3 \' Llet i 3
* @% Q, l$ I8 p, {- Vlet sum-time 0
3 Y0 d( ~/ N0 ^# a( R, {) [/ {while[i < trade-record-one-len]
4 L+ }/ j; y, z+ T5 y[6 m3 _7 b3 q; e1 _# _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 o: n# W" E- {0 C0 D
set i1 i, o/ a, k: W1 o
( i + 1)
2 ]7 K  J' c- g  ~4 l& [3 e
]' W# z, B  E2 S5 t" Q# T5 j' u
let credibility-i-j-l 0
- @( d: A6 x6 i  y. s9 ?;;i
评价(jjl的评价): l4 h& {" n7 s0 n7 f/ s
let j 3' `- W7 h) n' y2 e3 C4 t) A. X. s
let k 4
4 ?. C9 \6 _- h) f3 u+ D4 M+ ?) Vwhile[j < trade-record-one-len]
. y' T5 T8 M) N- @' \% {, }[
0 }9 v$ G( h$ G$ y/ Xwhile [((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6 f% A" g3 [! U2 }! l, [6 R
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)
$ B3 l' y- P( e$ ]set j
' G$ J0 G  u! K; S/ r: k( j + 1)

$ q  e; m, F6 K$ h/ T]
! l2 L1 c( a- a) T2 E2 [7 U2 ?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 ))
$ u2 u  V5 p+ \" x& i$ c9 N! @+ e  ~
. T' d0 u: D9 F, C& a3 N, }
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); N2 F6 g/ X% S3 x6 K& l6 L) M' Y
;;
及时更新il的评价质量的评价
( W) s! n$ l% z# Qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& L& U/ Q' V% F  z+ H2 t' u; N1 {/ S
set l (l + 1)
6 {9 m& a. n- `1 C  }: S7 y5 {]9 p7 o% _, [' p8 r6 W
end
3 @) p) x* t9 a2 v% U" A+ T3 b1 z" K, H+ u5 y/ h
to update-credibility-list4 L9 Q$ b: z: R# @7 ~( B
let i 0
' {9 }: [) E. y0 m# \while[i < people]
* z$ L9 U3 G/ r& A[
- U) o, l+ z4 o; ]5 g% hlet j 0
+ s+ k" Z% c. A/ M1 Rlet note 00 X' g$ G' z8 V
let k 04 t) {. l9 c# N5 k; F# H7 h
;;
计作出过评价的邻居节点的数目/ V6 p: k7 `% H, g: }7 K
while[j < people]
) ^" w2 l' _( {& O[
; g4 x2 k5 {. p$ p+ w6 qif (item j( [credibility] of turtle (i + 1)) != -1)- o) g$ d- G& Y
;;
判断是否给本turtle的评价质量做出过评价的节点
# v+ V6 u. k% X5 L' \+ {[set note (note + item j ([credibility]of turtle (i + 1)))$ I, L) l9 h/ l' v$ v  y( q6 M
;;*(exp (-(people - 2)))/(people - 2))]

7 D9 e. P- a6 ^  N" fset k (k + 1)
! \, w. V# l- ]  A' Z. _]
* M7 ^' r+ ~' C4 s# y: uset j (j + 1)2 \9 x2 J9 B; Q! [! I+ \* @2 P
]
$ b& U* n* C/ D1 sset note (note *(exp (- (1 / k)))/ k)
' T: e6 P+ P) f( C( `0 h, gset credibility-list (replace-item i credibility-list note)
8 F% s' l0 w" i( @5 x# d( mset i (i + 1)
1 J% T1 r. a% a  w$ m; H]
  V% b5 q) O$ ~9 V# t) yend3 E$ _& L$ q& G4 f# w' B/ U9 f
) k6 B6 C7 w4 [% ~8 m0 L
to update-global-reputation-list# ?' o6 o* V- m. V& a# Q2 Y3 Y+ n9 v0 S
let j 0. \9 Q( V7 L) c3 `& h; V/ U  Y4 a) ^
while[j < people]
' M6 X- O+ S. h1 w; Z5 U[) F. w* y- @; H; x. C% g& k
let new 0
1 A3 A" m( z( l  K! ^  y3 M;;
暂存新的一个全局声誉; I+ z6 d# A6 E0 f
let i 0
& \  N7 P' m/ k1 R3 t) @let sum-money 0  V! i' a1 t2 e# G1 x' i4 H; [
let credibility-money 0. u+ |7 W8 V$ y! G, a
while [i < people]
8 a- a1 Z0 y, E! F8 f( z% v[  [- x, e( j5 h% I! }% l5 K) y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 b  {! ]# s! _0 U
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ K  H8 M7 n+ u# d
set i (i + 1)5 c7 W% c5 E) D  E4 F4 J( ?1 O
]
' V3 u" s2 f. _2 t9 k' z9 x( m) vlet k 0
" k& q2 X2 g* M3 ?0 e0 B7 alet new1 07 T- j& s. b% M0 k4 z6 v
while [k < people]
' M3 p7 R- g/ P[
2 V- s$ U0 I: t5 c1 F0 Uset 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)* S7 Y9 u. G- ~* ~# A
set k (k + 1)
3 N+ Y$ A* T; g. q" U8 m]
# _. q" |) E+ _9 N$ aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% k9 L2 a! u+ ?set global-reputation-list (replace-item j global-reputation-list new)
. y' }# i" H& H1 Iset j (j + 1)) x9 k4 m0 `) ]" d
]/ _' B- s0 H' I
end3 _3 S+ X* Y$ e
" G( U8 L3 \4 x( j5 z

8 t- V: @" L% E  O/ `
0 H& X* @4 l( \3 [: F# zto get-color& p  C4 {6 J) |

; h; j" z! q1 ]3 `set color blue

9 E( ?2 ]' C  d+ L) R$ p+ ^end
4 g  C" h/ F: p7 K1 y7 t% E. m5 |9 g* ]$ e: G. y1 r9 `
to poll-class% n& m9 ^$ m$ H; U, U
end
# O$ }& ^; M3 b( ~. L  O. ^; `* J2 p
to setup-plot10 a# t( R9 b: k

4 {  f# S( p5 s$ Aset-current-plot "Trends-of-Local-reputation"
$ t& j3 U, K$ O& E! s

; O0 x. y6 g8 Yset-plot-x-range 0 xmax

! ~$ F! f4 ~# ]$ U3 ^$ y( ]
% ^6 z' Z2 B/ J; V; Tset-plot-y-range 0.0 ymax
1 |  X( M$ R- ]- `
end
! f4 _5 \- r% B, Z
6 i' U, L/ e/ oto setup-plot2
. d# P& D4 u/ G- G8 _8 M$ `6 T) H& L2 B0 G
set-current-plot "Trends-of-global-reputation"
5 |! ]' c' R1 B4 d- e

+ @' |, h' @0 j2 Z& Sset-plot-x-range 0 xmax
% @( b. F1 w" A9 o8 S3 Q
0 `0 w: n2 ?1 h' R4 F
set-plot-y-range 0.0 ymax
5 t3 c/ K! Q6 b4 ^9 V& w, `
end- T; o5 Y6 @7 c" d; K0 B$ ~8 [
) `- v7 }* Q8 D
to setup-plot3& |- W* u& W, A  G/ C# ^& {

( I1 z9 V. Z3 o- ~7 `- pset-current-plot "Trends-of-credibility"
8 A; @* f: D$ x- A3 e* U$ Q
8 r. R9 g" e9 C$ M' k+ f# q
set-plot-x-range 0 xmax
# [$ I4 S% I5 X& `
' e. M( x, ^9 p4 V" l
set-plot-y-range 0.0 ymax

: j& `! ?5 r. s' u* l4 Gend9 e/ {- _* q  t  t2 o

4 R5 _( f2 P$ s+ K* j* |4 ~to do-plots) n, r) F. ?# S  e* }& s
set-current-plot "Trends-of-Local-reputation"0 Q2 _. B0 H4 ^
set-current-plot-pen "Honest service"# L2 y- V7 B4 d3 I
end
1 ?  j1 K% Q+ B( h# \5 N$ c; e% V5 t
[ 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.
. {7 K: x* R) n! e% P5 \
7 z9 O3 b/ x3 V- d- W2 J  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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