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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:/ K' h3 m% y/ b1 \1 O% o
to do-business
1 G; c# \- t) `% K$ R: F rt random 360
: T+ V1 l  y% u1 R9 v* i fd 1
7 i  k4 T( b- t1 b/ a7 J3 [ ifelse(other turtles-here != nobody)[
& D3 p' y& J2 `2 N$ W& w   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.9 c. M: ?! u; F
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . ]' F% l8 x8 p$ J& M* V
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- X& T8 L- c: }, j6 P* q& b
   set [trade-record-one-len] of self length [trade-record-one] of self
! O- ?9 h' i/ Z9 n  g7 Y" n6 O3 A   set trade-record-current( list (timer) (random money-upper-limit))
( o( J$ p) B" w$ D6 Q8 z5 x
. t* ^3 m7 s8 d3 `6 J问题的提示如下:
. A3 v1 H6 J- t0 C1 `- |
1 i- l3 R6 W8 `4 v- L1 rerror while turtle 50 running OF in procedure DO-BUSINESS4 q& K7 s9 c' b) A
  called by procedure GO
9 t! F$ y+ v- d9 y  c0 h4 ^( \; BOF expected input to be a turtle agentset or turtle but got NOBODY instead.# n" k  _" E  G$ C8 n0 a
(halted running of go)
% ]8 R1 O2 {" A8 o3 b- {' o/ C& V$ s! O1 t
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~~
% ]& x$ o$ ?& U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
- m8 a3 y5 w* Bglobals[
: p) I2 Y: y6 X7 z( U8 o& ^xmax2 N. a# [- z  D: e( Y' i7 H
ymax
+ J# i2 x: j5 S$ n* W# \! {global-reputation-list! N$ @! W7 [4 W
2 ?, v$ l* }3 b2 \# \, f
;;
每一个turtle的全局声誉都存在此LIST
2 \0 U" a( W; C- `7 e" qcredibility-list7 k+ K' }8 t: d* w  s6 d9 j' e' t" \
;;
每一个turtle的评价可信度
  Q/ u- g: H. z& ]honest-service3 d1 ?+ s. g: x! w! z4 M
unhonest-service( s2 f' t) z5 P0 S
oscillation
  A9 a3 U$ _7 H$ Grand-dynamic
- Q8 n/ \& Z( C8 |8 A7 d$ K; b# }]
/ w4 a) Q6 d9 k) p9 W. U& r4 w) w  E" n. b  [4 `2 b+ l
turtles-own[
9 ]2 D3 F0 I6 v" g7 T( Ntrade-record-all' u3 v' U, {! P9 y9 R
;;a list of lists,
trade-record-one组成
4 i- H7 u: Y3 i9 S/ h# h8 u6 {trade-record-one
* T: v( ~$ D  ?& d;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; R6 g3 ]& N1 Z! @$ K

  I+ g, K1 S1 T% V9 i* n;;[
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]]
; o4 o! I# F3 e) k, ]# Mtrade-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]+ k9 I# ^, h+ W
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list3 c, X& r+ g/ [  P4 m/ x
neighbor-total
, o0 g  l5 R8 t0 P7 E; `/ f2 P6 K;;
记录该turtle的邻居节点的数目* s7 o5 S' A) \" M! K& X
trade-time
1 B& W6 z: f' h& e; G3 I;;
当前发生交易的turtle的交易时间
+ f/ I- \( ^) |) p9 \, Xappraise-give( V" Y9 X* q9 d! N" D
;;
当前发生交易时给出的评价: e" E4 H" u; i0 r. z
appraise-receive2 n3 ?& ~! i8 \$ x
;;
当前发生交易时收到的评价8 s$ m; u& @: M+ T) X! A3 m
appraise-time6 y) ^+ f" c7 J2 W
;;
当前发生交易时的评价时间* |. a7 g* }8 j: ^* R" }
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 Q1 H& U% N. r/ F
trade-times-total6 J0 \6 ^' G) w# Y( O  x4 V
;;
与当前turtle的交易总次数
# S. A. O) ^6 b4 K4 ~trade-money-total
9 \$ S0 m, |" X/ g8 x;;
与当前turtle的交易总金额
+ M) P2 U! g  W3 s# glocal-reputation
) `7 m; Q+ F) }global-reputation- K# ~" L( p9 X$ `, f
credibility
" d2 F' X- }. }; H, O;;
评价可信度,每次交易后都需要更新
) z0 h) ^7 w( Z  `! u( _credibility-all, ]0 z0 Z# n+ r
;;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( l/ ]3 ?) l+ b4 N9 }2 b. f

3 S& x6 I5 ^0 Z! Z6 _;;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
, O- g% `( L# |1 Y+ B9 vcredibility-one; [: z3 t. X) L# s
;;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+ b0 V9 m( [# G/ r$ G2 T
global-proportion
" I" G  G1 g, V: ^! Acustomer5 F- D/ Y4 o' G" q5 Y; \. U  r4 F; i% ?
customer-no
$ m7 [, K: J- R2 D; qtrust-ok
: u8 i! I. \" [$ R) G4 Xtrade-record-one-len;;trade-record-one的长度+ X8 P- e2 O1 |% n) A; [4 c2 c4 \& v
]
( ?: H; Q+ M! Y; ^+ d
' y( X* I' Z! e( F;;setup procedure; `% d, u4 K5 j# K6 ~! y
5 D2 J1 \- }5 u& N. @
to setup
6 p1 }# o' Z* V0 j: N
& C: H* Q5 W! Y# pca

  p3 v; `# _3 h: z! P9 |
7 t; a1 Y+ _1 n' k, L  Sinitialize-settings
  }, D8 U$ g3 z1 p$ H4 @5 ~

, f4 }* n& h/ x8 \crt people [setup-turtles]

1 n, P8 f9 l) y' k. g1 L+ }5 Q8 |# i* Y- k6 P* ?5 R
reset-timer
' R6 O- p& v& ]* D9 Z& I+ F0 }

6 F9 q1 ~* N5 mpoll-class
: @6 F, N2 V8 @

0 E' i% c" h$ q$ Z; ^9 Osetup-plots

4 `4 F8 T1 ?; x% o# y' z5 m" A6 H' C4 g7 j4 D7 [, L( Y
do-plots

! C; n! p  C. g/ G* }  r- q% gend
! P  f! x5 x8 o/ K4 W) \
# Y( N9 ?: b  n1 W1 sto initialize-settings) B* t7 r$ h2 [) @, K; T% M  f+ }
( i1 J/ t3 v6 Q% ~/ d  [( C
set global-reputation-list []
. ^- h) b3 A% G' p
& M" y6 K( r# `5 p6 H- N' b
set credibility-list n-values people [0.5]

) z2 ?' q+ e# t' w7 @; I- {6 }5 @
5 B. r% _. R( wset honest-service 0

1 b( v: [4 t# b. Q' _& Y% J
! v- H: ~) `" I% o+ Tset unhonest-service 0
) i) s' ~5 ^# y4 {& q+ [6 T# c
% [  Z1 t* F% h4 _
set oscillation 0

9 M  @6 w# l" a7 i
; R) T& M! `/ \$ Y0 K. H5 B+ `set rand-dynamic 0
' ?+ J. ~- f3 \2 G9 I4 F" L
end" A& m0 c& v- j8 ]

7 b+ w0 _2 F3 x1 K) H' rto setup-turtles 5 V3 I( \$ F' p4 G0 u7 C3 d
set shape "person"
' W( V. n$ G! }8 X+ B; msetxy random-xcor random-ycor* s2 t3 e4 E- G4 L& q6 b: \1 \
set trade-record-one []& j' X( H: m- w# T% l2 d1 |: B
* R. [& l; R2 i# r* Y
set trade-record-all n-values people [(list (? + 1) 0 0)] ! Y6 E& c2 Q! c" w

7 B- C9 y/ l- d: B) q) b- n. @set trade-record-current []
, R/ m$ }$ A. J. M/ G/ @6 Uset credibility-receive []( o6 U4 s$ O7 b3 x2 \( B" R
set local-reputation 0.5
% B+ ^6 S2 i, e) Zset neighbor-total 0
) H/ u5 p+ q7 k. w, h) s# y: D+ Z+ Cset trade-times-total 0
: I3 U+ M6 _. e1 m) D4 W/ S# [. L1 fset trade-money-total 0) V+ X7 ^. J' Z7 Z) J) ]& U$ I) N
set customer nobody
# \8 m3 H6 t2 ]" `9 k$ Vset credibility-all n-values people [creat-credibility]' n  Y. G! m3 E/ B
set credibility n-values people [-1]& h8 D9 R6 u5 c& O( x
get-color
  P. W$ T% M$ G! ]6 F* W
4 |/ e/ t% {7 h0 Y" W5 ?3 i
end
! {' `/ `, Z( ]# Z3 a% p( W0 c$ I5 _" F* s1 N. g1 ^
to-report creat-credibility
2 s) n# ^3 r( ?' Nreport n-values people [0.5]: `, P6 k7 \; K& J% r0 b5 u! ]
end
7 z$ S0 A5 R  J
4 e* m% c; m4 z3 T) z7 }3 n: Y+ Oto setup-plots# _& S/ e5 i2 `0 V+ \( @  I4 k

5 M" ~3 b# Q& w1 `! x# c4 V# [4 lset xmax 30
$ g5 ]0 U) _& T* ~  m  T8 s

  ]. \- M% M  ^% o; p$ Wset ymax 1.0
1 k! d/ Z  D4 [# \8 G% d
: \# v! K3 |# ~, g/ k0 ~0 o
clear-all-plots

! U' r' S0 ]1 {
' a' R5 |- x8 L1 usetup-plot1

  _; [6 f4 ]$ n5 I
1 h7 V" t2 Q. Xsetup-plot2

  Z+ E$ c' H9 i0 t* ]/ [( k. i( M1 u% K& \' k+ v" k
setup-plot3

! c: l& N* m/ [" U! Zend" E1 B- @& Q: v. Y' w: T- P' Y$ Y

6 A# v" p% R+ d- Q0 X;;run time procedures, k0 m3 {% I7 |) L' z8 t

- \- p$ U3 R5 gto go2 b/ ?; b- N/ C$ T/ |* q$ a
0 S% S& A9 T6 x+ J) Z* a
ask turtles [do-business]

, ?3 d" ]$ |9 h8 @7 k9 P; Send
5 p  ]4 J) Z+ ?: W5 H9 N1 c" e1 r- Y3 Z2 [3 P6 F: o8 I
to do-business + J. g! R4 x1 O! J( T, V
' s3 s# {  Q, h3 Z% ~8 m
. q, Z8 A* D& A+ P4 y" n2 {/ ?
rt random 360
! D! p9 n. ~, m  b9 L1 p

/ C2 F" G; G+ Y+ S' cfd 1

6 r. N6 m7 y# [0 D
* ?: V" B+ F* b+ R5 Aifelse(other turtles-here != nobody)[

* J& N, W7 q8 t4 A% r- J. F0 R( N" H
# T$ @- ^* T2 d$ g8 p2 Cset customer one-of other turtles-here

0 Z7 S- W( s# c. S0 N, z; V
# M4 [( [, u: @* E9 L# S;; set [customer] of customer myself

. s8 X8 D, P" L. d
" b4 L# Y- Q  ]* `/ \8 |set [trade-record-one] of self item (([who] of customer) - 1)7 L( s* a% z7 y9 i7 E
[trade-record-all]of self# v. o% ~+ m4 E2 v0 ^8 T/ z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 w7 R6 s, I# s, y5 P9 V/ ^
) d+ o0 ~! Q3 k& d, n$ V6 u. h1 ]. iset [trade-record-one] of customer item (([who] of self) - 1)
; x/ r8 y) A6 B2 Z: F. F! I1 M[trade-record-all]of customer

$ Q8 T" k- S8 x; o/ O
+ F9 O& X. k8 K8 f" ]set [trade-record-one-len] of self length [trade-record-one] of self

- a7 s7 r  j$ A; J
* t; M0 W# m, H9 s$ `set trade-record-current( list (timer) (random money-upper-limit))

. Q% I6 L- n4 w$ K9 V, z$ Q
. C2 [+ r6 g) L& ]/ f  C% g& s2 Gask self [do-trust]
) f# J. g5 R2 u! q7 \( g;;
先求ij的信任度/ I& I4 T; u. _
8 p2 t1 V; O2 l9 g7 e: D
if ([trust-ok] of self)
1 D: t) u% ?. U% ~% [;;
根据ij的信任度来决定是否与j进行交易[
$ B1 O+ {/ x' N' Q' C( Zask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 H; v, U! `9 ~8 y$ K. G9 {; |
0 l2 B4 ~0 q  o4 J[

) s9 k4 L: t7 s3 i3 w" _
# L/ |& A3 a! J6 pdo-trade
( I: C6 @. s$ V3 M1 u. Q% u
6 X- @4 h* J6 Q! e
update-credibility-ijl

- J7 b3 H( \( T5 d: B9 f2 j' |; |
$ G( O% |# S0 O' oupdate-credibility-list
& p3 L# U, F* b8 g- E" r

, G# Z! A9 N0 x# ]0 I
- s: u* h) b3 Y$ T  u: \7 [update-global-reputation-list
1 ~- p' h: Q. r- a" _
2 K! L/ R7 @0 W
poll-class
0 i6 F  |; r6 o

+ O! G# G( r8 C  Gget-color
+ @1 `/ R! y% M$ P, W

) T* }  p1 M# P]]
8 \0 _  a5 ^. v3 b) y' A. K  j6 g. Q/ A" s+ G
;;
如果所得的信任度满足条件,则进行交易
( z& i( i3 p8 ^1 I; w
4 |; s* I* V4 f6 h[
! W0 C( O7 ?7 J) N

$ i8 N* U4 ^' C! s$ W+ m9 Mrt random 360
* f+ Z1 k% j$ ~9 y1 [
3 Y* t! ?; H6 d# C$ j1 ^" M
fd 1
3 D! C" u& B( J/ M6 e, w0 R5 y
: i' b( f7 B; b# ?
]
: l9 ~* t( z, m. C! x! B- F$ L
) g( d5 ?7 N! z" q- H6 k
end
- n" J4 ^4 k0 y7 `5 i; t8 G9 k. Y
/ U5 i8 g( [3 R
to do-trust
) W$ `/ d. C. G1 Yset trust-ok False
. N9 T0 y5 \: b! E( T% v  A; v1 J1 S1 B3 D: u+ B. }8 f

+ e' g7 l. }0 J1 v! N' \0 N) F" Wlet max-trade-times 0
* Z' y6 E$ q) E7 p4 @; x' Y- Y+ qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ R+ F' b& H: r7 ~7 V& v) |! W2 olet max-trade-money 02 |( I8 O, P: G& {7 q; u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 I0 h+ ^7 e- I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ R7 f1 H/ N: L* _9 F4 O
, q+ t" T$ U% @3 U* t2 p

4 `- r& j+ T, T9 L, Xget-global-proportion+ M" k6 z' D* L2 z6 V( m$ H8 w* |
let trust-value
! c, A. r) X/ 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)
- e% r, U/ `$ N: ?  P0 Y+ ^
if(trust-value > trade-trust-value)4 y" a+ M4 r. T3 }$ a. T6 q
[set trust-ok true]
; q: J4 H# f. l3 x6 ~) cend- E6 F7 V' C( d6 D5 q' O. x

9 D6 t3 m( c9 y1 k/ ~. Eto get-global-proportion
8 ?* `; P. F/ @4 W$ j5 V9 \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( {; }9 \% K; l4 e$ w! Z" Y
[set global-proportion 0]! g, z) M( w) `
[let i 0/ y# ?5 S( V1 K* J0 w! h8 |
let sum-money 0
" o0 O/ g* @0 X" s+ swhile[ i < people]$ a; N/ U% Y0 B3 c: }2 n
[
0 Z6 H$ b4 t; Gif( length (item i
# i: a) z. E/ e2 g8 a4 |5 N0 K[trade-record-all] of customer) > 3 )

7 B7 j1 m- G3 x* M: I* s+ w' F: d[
- L# i4 V6 H) }set sum-money (sum-money + item 2(item i [trade-record-all] of myself))* ^( t# x, t( l. u+ O8 F
]
+ l9 e' k+ V1 U+ M* J]- r% J- a0 C3 L8 C% k
let j 0% A% g7 g4 V' A5 l* L
let note 0
) u3 E# A  \0 n& O5 G2 ?while[ j < people]; S6 N- O5 Q$ N( r1 h
[' k' P; b2 B3 }9 `5 d" C
if( length (item i
; f: o7 ~( F5 `5 J& V& h, }[trade-record-all] of customer) > 3 )

2 Q" ~; A# Z4 ?5 W[
! z# z0 a& R; _4 I" K/ gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  U0 N5 o( Z' D, h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' g  D7 l' g  o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: B/ w3 F- ?& J( V! ]$ S! l  A]# g- f0 ]; N: e" T& h
]! O, G( h0 G7 I& i0 [# M
set global-proportion note. T% d. M5 }8 J- w" Z7 H
]
# N- i' D9 {1 e" [- h" j5 xend
2 r' {  C7 `- H. n& n! w8 ?* Y
+ G+ W/ G2 q4 J* gto do-trade: V# Y+ X( [8 D4 [% t
;;
这个过程实际上是给双方作出评价的过程
- G6 x( w  g7 \. t& \- jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  B3 r1 s+ H0 Y/ {. Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 c, `1 s6 o; s/ B2 [- ]
set trade-record-current lput(timer) trade-record-current1 b: h! Q- L7 f5 M, z% I
;;
评价时间
9 a6 _* z1 l& K" k8 W* Rask myself [4 k) x+ {. a# \: K7 ~, `8 f
update-local-reputation. k7 d5 s1 p. w; K& f$ W
set trade-record-current lput([local-reputation] of myself) trade-record-current$ @; }9 _1 t! Q
]+ e: o: _% P& N5 E2 Q$ s8 `  ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# u3 |9 F7 Z5 B
;;
将此次交易的记录加入到trade-record-one! w1 R* F( _, [' m* C# j8 u  W: @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# \! T, d3 m$ w! _9 |8 Z5 g
let note (item 2 trade-record-current )( [: r: t- J5 u' H- R0 y
set trade-record-current9 q# J* o; o1 H: c8 {$ F, G
(replace-item 2 trade-record-current (item 3 trade-record-current))

, e; y5 W9 N0 Z6 F5 o; x! ~set trade-record-current3 M1 W  v7 c. L$ `7 L. T
(replace-item 3 trade-record-current note)1 g( O5 O9 X4 e( V, N
$ x: V! }( I2 }
9 ^5 j, `' f6 m. C9 [/ Q7 l
ask customer [1 h, ~$ z/ a! n1 A* E
update-local-reputation: |2 S$ e: b* l
set trade-record-current
6 J; m: f) r. ?2 b8 V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 v5 |% @( D9 c/ R) F& ]
]: V1 y" S) p2 c

! E! H6 z5 k& C" e
3 Q) ~/ t& i! x: j! `  v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: ]  n% Q# M  Q* N% n

3 R0 B- v  o/ c3 g' L  D8 ~# \, Tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): z: ?; u7 O0 V: m4 y% ?
;;
将此次交易的记录加入到customertrade-record-all1 V9 }) H' L# P, q4 c2 l/ O
end/ b$ r9 R: w: o5 C; a3 w" \$ n
% j$ v( J! Q7 N0 `' I3 e
to update-local-reputation* E# j; T: B! U0 l' q' A
set [trade-record-one-len] of myself length [trade-record-one] of myself1 P6 |. ?+ {8 x4 b9 Y. l

0 ~7 E  _' u% a; w3 S. I, R0 Z( L. N8 j4 p" |
;;if [trade-record-one-len] of myself > 3

& ?7 V% Z! d% w' x2 P2 a) bupdate-neighbor-total) B9 V; [0 l; J( Z% Q* T: e2 N
;;
更新邻居节点的数目,在此进行
( n' F9 e9 A7 l4 D7 Wlet i 3
7 p; g. m' G# h; V+ v7 Y" k- B3 k* mlet sum-time 08 h! F5 |& a+ v
while[i < [trade-record-one-len] of myself]5 [  K( O7 u  W+ A6 t
[  B. I+ Z! C0 i/ c6 q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! E4 n& I% x; x( Eset i
, l5 E' W7 O2 x: h( i + 1)
. K# p5 _8 n& E: h; N
]
! f& {3 @1 n0 O+ ?, o" W/ Plet j 3) k+ j9 Q/ `% b0 [/ G
let sum-money 04 D; n3 N" p3 G+ X& a( C
while[j < [trade-record-one-len] of myself]* Y  C& B6 c" O! \) Z/ U2 K6 N7 t
[
# m% K3 G, R5 w3 }8 n, ^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)
% T* Z6 d0 C% d, A7 yset j) I4 P/ g4 m. R6 n2 q. t, C4 o. K
( j + 1)

0 e( P& @- [( g/ V]! D3 S, t3 J2 E
let k 3
( t" K" b; x1 m3 K0 E6 glet power 06 O; u/ U3 q1 F* y3 b% o
let local 08 m: Y/ T) m3 h2 e7 p  k  U
while [k <[trade-record-one-len] of myself]
! @% i- L, O3 w8 a( o/ z4 Q[
$ S! t; h+ H" d  [/ G8 R; g2 Bset 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) * a1 ], W! w  B
set k (k + 1)
! x7 P' p1 N3 Q; q3 S+ E! h]
/ V8 p2 o4 U5 \8 X/ K! |8 qset [local-reputation] of myself (local)
. c7 H7 F: `: Wend
, s  @: n8 I; l  P* f  u" X, a( @0 H. j
to update-neighbor-total% ]3 [' J6 f) W) K" A
8 t+ g9 ]' s6 t1 [0 J1 [1 H# w
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ n. B3 _- ]4 s1 T
9 O: b' \* M- v. M" x) ~$ N
6 j  T9 A2 H6 L1 w
end
  l/ E9 q" W+ O6 Q- j
" k: L6 z  k) l7 x/ k3 l* rto update-credibility-ijl / i( x% j7 ?0 ^* a/ L1 M

4 V5 _! l! T7 g; g;;
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。% x' h! x7 B0 P+ s, Y% {
let l 06 j: R- F* q* n: e. j* K
while[ l < people ]
" F$ }' J7 D% X;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
6 N, V& ?( g5 G& b4 }[
7 ^' w  X4 T$ V8 O/ E" U( Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 I5 h2 k# u, s
if (trade-record-one-j-l-len > 3)
4 ?0 W. f: K7 A[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; t( K; d; L2 f7 \, Q% D! m
let i 3* I+ B9 E& s) i) Z5 Z' O. K
let sum-time 0# C) F/ I, I, t; h9 e1 p
while[i < trade-record-one-len]
5 r) h' Y5 @4 \* W* P( y* W[
+ z' [8 P- o7 u$ U7 N! e  Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% d0 G# z9 ], j& P  }, E
set i
2 c4 a" H; b# |9 S& ~( i + 1)

5 Q3 f1 H- o, V5 f) i. Z]
! N/ P8 K* N9 w% K4 {9 flet credibility-i-j-l 0/ |+ R5 l- b( k& I
;;i
评价(jjl的评价)
6 t, A3 ~7 @4 [4 g: Glet j 3
7 N0 D7 U' C- `2 xlet k 4
# d: y( D, q8 t' N: f9 T  ?9 i! k7 awhile[j < trade-record-one-len]
! Y9 S  f0 G: G/ S[6 B9 U% {  \" M% G* K# ~  s* f
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5 \% o$ c+ z6 T2 N( Y3 N# \$ Q3 W
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)1 D4 x9 N# Y8 \; ]1 q2 K! U
set j6 X  d$ V& F' ~% B$ [" w  d
( j + 1)

1 ]$ ^, {+ k8 b; v]
% I  w! S/ F) W9 s; g0 {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 ))
3 R0 s2 P4 P+ r; V6 \9 X) E
; y0 {5 @# \1 q8 `" c2 E% |) ]! d
: a4 h) K( T0 A# c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 N/ h5 {3 |# ]# g( W
;;
及时更新il的评价质量的评价7 s1 |7 n6 P0 y  S/ r; W
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" v! ^! M' j/ h
set l (l + 1)
. ]) T8 x8 @* e4 e]
8 p- u/ E2 c! q5 F1 z) Z+ ]end0 S$ k" j. A1 p! n! V, V

2 A/ j& d$ C- A) ]5 z& wto update-credibility-list
+ B) _9 d7 x$ @1 \' a- R/ \# t( Klet i 0% i3 a3 y; E* S+ {# d
while[i < people]& z! n1 e" d7 z( W& E. s9 c) _
[
; i$ z5 S- w' _let j 05 V$ Y' m% {- P
let note 08 g7 g/ T* V$ M/ ]
let k 08 N5 X; e- f7 L5 u' i+ _
;;
计作出过评价的邻居节点的数目
0 v9 Y' Q4 ]- y7 o2 Iwhile[j < people]
' }& X# F9 V7 f+ F7 o  K[
; }% P# s7 [) c( |if (item j( [credibility] of turtle (i + 1)) != -1)
* U9 n* w+ p4 ]) h. j' Z( `;;
判断是否给本turtle的评价质量做出过评价的节点
4 z6 s' l# `( R* }$ V3 B[set note (note + item j ([credibility]of turtle (i + 1)))" Q6 S( h0 [: ^3 o( `1 E& }
;;*(exp (-(people - 2)))/(people - 2))]
5 o6 e, b% Q; h6 w; c8 ?
set k (k + 1)
9 n& {4 E% g% p; J! O]
( L  Y2 r  ~7 S( Aset j (j + 1)) [7 S) ?+ B0 Y# M9 s
]
% B- Z7 B" [) n- P! oset note (note *(exp (- (1 / k)))/ k)1 g0 u$ E% i* `3 ]% \  H( }. M
set credibility-list (replace-item i credibility-list note)$ t- r6 m# J, K7 ^
set i (i + 1)
5 O! W* B6 B2 k% Q0 o8 v]( }2 ^0 W" ~4 u3 y
end4 r! Q4 Y8 _: E( s% w, \: F

) ?8 t- h( Q+ E: r& tto update-global-reputation-list
+ N& V7 g% d" G0 C2 w* rlet j 01 E6 ~* X1 c: A6 j/ P# d
while[j < people]6 U# U& n1 w$ s1 H0 F& \
[; C! E5 q6 U/ w( y2 Q
let new 0
  X; T. c; ^  y. J+ V" w;;
暂存新的一个全局声誉
! w% ~. I+ G5 H0 D" F, ^& d! A: tlet i 0
  a3 E4 q& K- b- llet sum-money 0: u; X: a* t! d& T- z) M& Q2 V
let credibility-money 00 y* U, a( w! v$ w6 D- u
while [i < people]
8 k2 b9 P  E# [' x9 n* y[
, ]! y( c# Q8 M/ V- Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 p# W* b0 a- r& }2 iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 v, H. b  ]5 n
set i (i + 1)& c$ Z, n6 [1 J
]8 C. t6 |# t) ^1 v+ o# H
let k 0
) W3 v! ^/ h4 d; i) j" blet new1 0
; _9 X" l' `" O% [9 c5 }+ Mwhile [k < people]
$ O( q2 E  m8 u8 q, K' `* @, B1 {: Q[
1 @5 T. M) U" A7 Y8 }( cset 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)
, n9 ]) J2 U8 e, }set k (k + 1)
4 t, ~) z( L) j6 R: G" t: l]
# Y9 a5 I- i9 e" D9 rset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 f2 M! m/ a2 Z3 D7 n, W+ lset global-reputation-list (replace-item j global-reputation-list new)
4 m/ s3 H: p1 H. o' r# Vset j (j + 1)
) M# G' h( d8 N4 a$ a: F) N]5 j: @. s7 Y( o1 a
end1 T. `+ D  @$ _8 G5 J
" s' P; v6 g0 \9 t
) D; }4 T0 k/ X5 V
, Y" n6 r9 Y+ ~, k4 e
to get-color/ Z) v7 Q* s; B5 \, i

% f# G( k9 l% a0 cset color blue

- `0 I$ h9 Z- X) W7 Iend7 w- z& Z# B* I' H; m: h

7 n; Y# r3 R: B* s& r/ {( Uto poll-class% N0 O+ R9 y5 m: F) {
end
  {' c; X, j9 L% l& O0 a5 c9 }% a1 _
to setup-plot1; O% J: a% t/ F0 C- s" Z

& j& x, H+ U: T4 Q& o3 r5 kset-current-plot "Trends-of-Local-reputation"
6 O; Q4 C' R' R) `) J

. s% U4 b/ _' N7 m5 D& Sset-plot-x-range 0 xmax
. f. I- K9 F+ t6 a' `. R
  ?. c0 c, X$ m0 P
set-plot-y-range 0.0 ymax
% R+ [; ~$ x( p+ Q, A
end
5 t# i, ?( b$ }
# D( j- ^* {7 ?% U1 E) h- Bto setup-plot2
# E+ ]! J1 q  F9 |5 L
9 k' k5 b9 g1 |8 ?set-current-plot "Trends-of-global-reputation"

$ ]0 ~* m4 a- b, k; C/ l' n  c+ r' R3 n5 j; C2 }3 N' _
set-plot-x-range 0 xmax
/ u! i$ N; E$ a5 t' }

$ c; z6 m" u& pset-plot-y-range 0.0 ymax
7 p6 C: e, n# u
end
7 Z7 g+ C: S" y8 |+ D, q
* T9 T- w4 t) ~( r! @' ^to setup-plot33 ^& O* \0 W. }5 L/ d' L
  N9 ]( b) ?; T- J0 @
set-current-plot "Trends-of-credibility"

" {( h8 Q( n" r) ~; f
' A1 l2 f/ s2 d6 ?2 `5 w4 jset-plot-x-range 0 xmax

' K+ o, f" O& J. `% w, W/ K1 d3 ~* ^) e& ]+ W0 T0 m4 A+ G
set-plot-y-range 0.0 ymax

' H' |. n) y4 `! F7 bend
5 R( J+ I' \. r7 G* U5 E. ]3 `& C* Z- t& n9 ^6 M+ v' o0 P# c& g! f1 o
to do-plots
1 b5 N; X2 z( E0 R: D! j. Z/ zset-current-plot "Trends-of-Local-reputation"! W1 r0 H4 b/ G
set-current-plot-pen "Honest service"
' `" P3 `5 B5 u0 f: [end- j/ {, _# m) h6 J- P8 R0 K4 F

4 }; y/ i9 j7 X, J3 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.
" l4 x- S* Q0 r1 q  I2 ?/ z# W* q5 s6 ]2 g+ U7 R% U
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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