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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:: B' Y( ], I% u7 q: _  g& D
to do-business
4 N( ~. c% ~& _$ A. c/ T rt random 3601 Q0 [( g$ \7 d8 k: S
fd 1
1 h$ r% K9 |# w! j ifelse(other turtles-here != nobody)[
  c$ H5 @0 M5 T1 o/ r, ]+ \   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.6 [5 Y5 s. _( o9 j) }$ e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 r4 @+ T% D- c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 W8 ^0 K& w5 O3 ^8 V4 i
   set [trade-record-one-len] of self length [trade-record-one] of self$ c% d; I6 t- m5 x
   set trade-record-current( list (timer) (random money-upper-limit))
! j& E9 d" j- }2 y. l( ^& V4 r, T, N$ b
问题的提示如下:$ x: Y" D; E- x5 }1 _
* v  v6 U6 X+ R# M
error while turtle 50 running OF in procedure DO-BUSINESS
; [# O, |! A. U* r: D  called by procedure GO  O$ p$ r$ L8 y5 K$ B. W& P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) Q; ?! q  v5 ~6 Z
(halted running of go)' m( \! J( A, N+ X: h! u  w# ~
8 q9 ^: C4 y0 V6 d
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~~
  z5 W# i4 J) F. I1 d% b) Y7 @# 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
9 W7 A3 m& @" Xglobals[
) }. q2 E' y' [0 b5 O$ h" i, P  W8 a) `xmax8 T/ }4 M7 c! D9 |: x3 y
ymax
& K8 w% k5 J6 }2 s1 g& Aglobal-reputation-list: x. Y, a3 A- I0 Z$ U  J) o
% C: C0 j: f* y% I
;;
每一个turtle的全局声誉都存在此LIST5 T- C) W& G2 B6 C( B$ e* Q
credibility-list
0 e5 O+ j, n4 }1 x* c- P3 w; O0 N;;
每一个turtle的评价可信度
, u8 _- y8 L+ W( Zhonest-service  W9 R: x5 e3 G  w
unhonest-service
2 Q2 w% I4 }& E/ W! m( Toscillation
. u: h( K- M4 y' Q2 r/ Arand-dynamic
2 Q7 B/ @' q1 V]
& f9 D5 F' W7 a0 A, T% d+ q# W# I4 E8 l
turtles-own[
! q5 [% p$ ?" w8 h8 D) @3 |trade-record-all  t# g2 V. }# G, K5 f
;;a list of lists,
trade-record-one组成+ m% X+ n1 O1 k
trade-record-one
* @2 O2 N0 q' Q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( o0 I, x0 f1 |! y; z
% ^9 {0 b# L4 G8 g9 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]]9 R8 ?1 h1 B# e- M
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]- t# y( y* K4 j1 F& `; G
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list1 i8 c5 t8 q' H% e6 Z' I
neighbor-total
  l! ?3 f# C" [* B, g' G6 p;;
记录该turtle的邻居节点的数目
! \* _: K7 D* O9 r& Atrade-time% Z5 M- [' Z5 m5 y% e# v* I0 ^
;;
当前发生交易的turtle的交易时间
; k) u/ ?5 l, Vappraise-give7 Y+ |3 q- x8 p: n/ {4 K
;;
当前发生交易时给出的评价  O) _. A$ k+ y6 ~) U% T
appraise-receive
% t4 b; Q5 b+ t;;
当前发生交易时收到的评价$ x+ s0 C* R4 e0 m
appraise-time4 J) p% p) Z1 @  X/ w  X
;;
当前发生交易时的评价时间. i" i  F' o4 w7 R5 h
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 O0 A3 Z9 V" A5 i; D' ~1 Y1 U( Z6 J
trade-times-total% M# r& B, ~! S, G/ o- I7 }4 v
;;
与当前turtle的交易总次数
2 c! g$ M* m- ~- ftrade-money-total3 |( s% _; T( ?
;;
与当前turtle的交易总金额
" G3 ^# d7 [1 Z$ j5 e& N" \  Slocal-reputation
+ ?7 f" p8 P5 S2 q# fglobal-reputation
3 }" h# Z8 c2 k+ m+ n  k0 S* y% m  q8 Jcredibility
% E3 T  n+ m4 @;;
评价可信度,每次交易后都需要更新
% n8 T  [$ _" fcredibility-all
8 S9 ~9 n' U# [;;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; @0 M7 D  F$ x4 L0 e7 `

  l3 V7 F# @" H; t3 z6 F' a  G* ^1 Q;;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
! ?6 n: w8 X' r3 _credibility-one' [2 u9 v( B" H2 W7 F
;;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
5 h: J0 F; }! {9 q: @& p. Z! kglobal-proportion
- D: H9 {3 d: j6 ecustomer
' s( I$ J2 ?  Y/ A& t/ }customer-no
) Q# o. N5 P( d$ Qtrust-ok
/ o) B! h: |" Z' }trade-record-one-len;;trade-record-one的长度% Z) e3 p& P  Q, x
]; S# ]4 v& n4 Q! a$ h/ P
2 G5 K4 Z1 ~( `) C$ n5 B. Y* W
;;setup procedure
! ~0 H: g, c5 f
5 D0 w0 D7 _6 Tto setup! e) F$ b$ v) `2 f
; S( }  \9 l  ]5 ~5 I
ca
7 o& I5 W; u- X' V" Y) y! P( Z1 f- [

. T4 v& v. Z# J- M$ P" y! Q$ Tinitialize-settings
) g; r# v9 }  x9 C& X
0 }3 S0 ?2 y" B* P: y, R; U1 ^  t
crt people [setup-turtles]
, M7 x* r0 N: v3 W0 Q. E; k  f
4 d7 I* n$ X3 f) n& {- D. ~
reset-timer
7 g7 U: l* ^8 g
% \! ^- V9 q+ J( [& @) Z# F
poll-class

+ e( N  k! _8 [" V! q- {# P5 `& N  i
& }# G5 _) h7 `- nsetup-plots
3 l1 C3 ~6 V7 i+ `6 p" p. n  u
, A- x# w# z0 _, Y) x! b
do-plots

7 Y$ V& d& l, S% xend- G1 F  c3 A: K. ^8 R  u; ?4 V7 B& n

$ d  X" I) E  a) u1 Q+ Rto initialize-settings; W. n% r% Y5 X. n
8 Q6 M) ^; s1 l5 P$ h  a
set global-reputation-list []
3 ^& ~- O; Q! |9 \4 @

$ I" g! V' O* v, S( e% Z4 s( X8 T- aset credibility-list n-values people [0.5]

$ P: l' c4 Q9 b+ P9 e. w0 ^: ?+ C( K0 }8 ]1 z5 X
set honest-service 0
  ?* g$ a  o) D' g$ w' F

6 X# u  O9 q) s8 b9 n( }set unhonest-service 0

* Y' i- e3 X: o- g2 B7 E  R
: n0 o% ^" S" r. }/ K5 C% zset oscillation 0
. ?5 `, W4 w* {) E1 G7 o

/ `9 v9 U( Y2 aset rand-dynamic 0
7 _: `8 D3 ]# S0 b+ b/ X' I
end' m1 @$ [) j, o0 j

9 m1 k6 ~# h' @to setup-turtles . H1 O5 b9 Z- E
set shape "person"
0 x$ A, {7 h! \% h% X: r  S3 ~setxy random-xcor random-ycor  w7 T( {0 k5 w1 Y  K5 l
set trade-record-one []
7 A" R% u& V; J: @. i& \) ]

* {* I1 L: b7 W" _# H) iset trade-record-all n-values people [(list (? + 1) 0 0)]
8 _7 {3 q1 {" r0 T/ k2 k' y

$ w, H% d% g5 L* Iset trade-record-current []. Q7 T6 h# y0 y$ d" _
set credibility-receive []3 z0 y# H, i4 ]; B! f; q5 {. h
set local-reputation 0.5& K4 K2 G: k  B6 T+ i
set neighbor-total 09 x3 K7 P" F8 f9 Z- r" J
set trade-times-total 0
* L  {+ m$ h% Uset trade-money-total 0' L! L0 ~/ p1 n: Z# V
set customer nobody
) p' p0 A( R9 j% Mset credibility-all n-values people [creat-credibility]! D% c9 V* M. B' @2 f) D+ V$ k2 t
set credibility n-values people [-1]- s/ ?$ Y( q, `
get-color
9 {! U- H1 [9 D

( W! t0 Y( x4 t+ |& h2 ^end
2 w, c- |+ h/ b* x, Q6 b
7 Y' C7 e. o! i% \to-report creat-credibility2 v) ^6 s1 P: l* W, q
report n-values people [0.5]
# h1 O1 H# ]5 N/ w% P* H# i8 q* Aend
9 [( P$ ^6 E5 ~  s( }! @. n! u( g
# y8 B/ |& ^, H* J% Bto setup-plots
# g- Y4 f$ c0 J& o& ?& m8 s
9 h' F' O( d$ qset xmax 30
' C0 l3 H+ |. A9 q5 i

1 }; c0 C: z. ?  P. |set ymax 1.0

& B- E2 u- t! o) h: c
" b6 t/ X" d! c+ H1 Rclear-all-plots

0 h) f8 T& O( ~+ G' s9 Y  E
+ X  J; W+ u5 p' I1 l& asetup-plot1

/ N  S( a4 i# |9 T* ^1 A: F& g: @) a# t$ J9 ]
setup-plot2

5 t5 z9 C# u, |" G2 e% Y
, D4 {5 k! L$ |4 J3 lsetup-plot3

( p5 c4 z! d# E9 W7 d( Eend0 O2 X  T/ z& l

! G" q3 o3 {5 o. s; `% x* d;;run time procedures
5 E* a% K; w; G9 |, N  f4 o( l% q# k- O/ Q9 K2 |1 I7 w" n( ~
to go1 w6 n$ ^5 L; A5 S
4 M9 }! B5 b+ o+ K/ F
ask turtles [do-business]
1 F: k4 B1 E9 g1 T2 W
end$ {$ U0 z! j9 h  c& x3 u% `
2 ?8 ^9 O& Q- e* R; z
to do-business ( i6 B7 K- ^* ]& k, Y  j
% I7 L* i; `" O) w4 h$ C
7 ]( \, s# d$ u1 T
rt random 360
# G% _4 p$ O6 o2 G. o# i2 w

  B; q8 q9 B( k4 p8 T+ v( k. Afd 1

! X1 c6 k# ?' o! I( q+ [! `( ?
  b. V# P) Z. _5 M) o0 I& lifelse(other turtles-here != nobody)[

$ X  Q) J+ U1 ?% o: A
- }; j1 Z' G; rset customer one-of other turtles-here

1 h+ _; v1 V$ `, j8 [. r! D, q0 l6 ]# m( d0 Z
;; set [customer] of customer myself
% c" {0 G8 B: x5 d& ^; v
% D0 d8 P2 j) r. `; t
set [trade-record-one] of self item (([who] of customer) - 1)
$ q4 Q2 W9 _$ H( X/ z( E( A7 }8 _) X[trade-record-all]of self
! e2 ~) u0 m4 h8 w! g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# r. A5 j2 g+ n9 s( H( Q2 b3 e( @$ q8 o* A- k
set [trade-record-one] of customer item (([who] of self) - 1)  h8 i: n8 k$ M
[trade-record-all]of customer
9 b- ~( |6 W' _7 o6 W8 I" l
, N. n$ _& H4 c% p- h
set [trade-record-one-len] of self length [trade-record-one] of self

- D+ J' ?% r* d, Z- p
( g/ P) M  [$ Gset trade-record-current( list (timer) (random money-upper-limit))

3 ^/ b2 G. ~* [, t
+ Y& q9 Q/ F! Cask self [do-trust]
# Q! r8 j" `% s6 e: Y: Y8 [;;
先求ij的信任度
$ T. b2 h2 Q' c9 Q% O" ]. l: `1 k6 h1 y5 J
if ([trust-ok] of self)1 z6 R" V. e* }7 ?3 P+ N% a* P
;;
根据ij的信任度来决定是否与j进行交易[, n1 A1 H, b# z& x# g1 V8 B, v
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# n; L% r3 B9 ^* |4 T% q2 u  f
% b8 b6 z6 L/ h; }0 c5 S8 U* \[
0 U" x1 I8 u& V

. J  P( M! W1 B4 wdo-trade

' e$ X% N4 ^! u$ V9 [
8 @) G6 p  O8 V" \+ l3 j7 w) bupdate-credibility-ijl
0 e7 z% ~! q5 _4 Q) ^
0 M% `' I" r1 r5 X, U& m- l
update-credibility-list
: @( K* {  V. v0 I, y$ i6 F; J

- l( ~. O2 ]+ V6 P4 y  E% i) b' i
update-global-reputation-list

$ ?  ?# v% l0 I+ B' c0 O7 z" ]; R) S4 s. P* R" t
poll-class

4 x" \$ W6 i' {9 X
, b3 P2 S* S/ `1 [2 Q+ r# i& Wget-color
) D5 Q$ d$ S( _! M4 j$ i% }! `9 v
, |; _- j8 D# h: g. l2 Z4 i$ C
]]* `, O3 |3 O4 N9 f5 R0 h3 S

% B8 N. o8 V0 N' O  K;;
如果所得的信任度满足条件,则进行交易! m  v' i3 ], ]/ d, n) J! p
5 {1 A8 a/ P+ U
[
7 N, ?7 J' L3 j0 |6 d; P% ~1 v8 L
+ c8 J  P& ?; x
rt random 360
7 s* F. e! I* I% L
0 F5 ?( h9 y2 X- S
fd 1
  q1 y1 S' T" i/ K/ D. k

+ `% i: t) ~" B5 C- S]
  X' A) X% `0 o2 q4 ?

) l5 x; H* [3 A5 I* kend
  N( r2 \( r/ [7 G
& V1 M. x7 `4 ?" U3 s7 r$ F( z- O
to do-trust 9 R) P2 E, O" W; c
set trust-ok False
" ~/ C5 r7 ~2 z6 a' o5 w7 e: b7 Z" c

$ ^" U/ i! V1 |2 b0 c+ b, M/ }& J$ X* B! alet max-trade-times 0
9 ]2 z6 }' S8 oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- s6 c$ l7 e8 z/ Z8 k( H, R. Q# olet max-trade-money 0
% S$ F& q- I8 J% u1 b- T# F& qforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( E  o7 `0 r% B/ v
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 I6 |* j5 i8 O/ R) N! V
# l) e+ t) e# v; Z: q' [2 t
9 D+ x% i/ ?4 z& s1 A  N3 k0 p
get-global-proportion
0 h0 T( Z2 k( O( v+ E# Llet trust-value
. ?# Q8 T. H% C6 ~( X; N7 qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

+ v) \1 T% c0 e4 zif(trust-value > trade-trust-value)
8 _* ^0 @" O3 J' V/ _/ {[set trust-ok true]9 P5 o2 i/ i% Z, c$ s& j
end( m% u2 A. o$ x# x4 ~" K
6 [- Z2 |6 [, I; V4 X
to get-global-proportion
5 V2 o+ \' Z/ Wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 y4 f" g( n0 d0 \[set global-proportion 0]
  }6 [, H0 z+ ^  f" ^[let i 01 r) [4 H8 y6 }, Q0 w# n
let sum-money 0
' ^8 v- n' e8 S. c  }1 U  ^0 _while[ i < people]
- f; K4 ^, a* }/ t[
" u/ J  }, W' ]" y3 B: h0 H1 f8 gif( length (item i
  T( c+ ?- x4 R  i3 L4 k[trade-record-all] of customer) > 3 )

, e6 j5 ]( I. Q[
) c" Z# W' {! Q7 z' C  nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 N. O- f! T, |1 r
]6 r* |; B- [. s; W* ~
]
0 n/ R0 t, u6 _9 hlet j 0
/ w: I# M  J( p  dlet note 02 G! f# F% N0 I# g% |+ r7 i
while[ j < people]- Y  M+ a0 f* J, l; f" J9 w! c
[
5 p- S2 c; T" b4 J" lif( length (item i
  t2 R& \! A8 \3 D1 q) `[trade-record-all] of customer) > 3 )
9 L5 t) h9 ]3 s9 Z7 V& W% L
[
9 J" {% ?; X4 w" Q6 p3 Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 G0 r" P) P- B9 @5 M% e. T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* ?& r7 W6 q: J  q! O' ]; o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# v3 z' ^* g8 C$ O
]. \3 n6 T: x% d" E6 _/ ?% c
]4 a8 j) f  V$ d: g% o% L
set global-proportion note
% d# o' N1 a5 k- h" R! {2 c]2 M8 b2 Z" M7 x9 `
end& g6 B2 O: F" M) f9 {. w% x
+ Z- _. t0 H  N0 a. J
to do-trade
9 b' A. `# @; f- m! q  c;;
这个过程实际上是给双方作出评价的过程0 P8 Q) F2 K8 L' F4 U0 i% O' W6 k7 G+ ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  _- F& \: P  T& o% S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 r3 a# s6 ]4 t  X: u
set trade-record-current lput(timer) trade-record-current; Q6 b/ |+ u3 [0 z/ Z5 l$ l. A
;;
评价时间
2 \" l( B* [. ?, o7 q, Wask myself [+ b. q; H7 m9 @( t
update-local-reputation
2 X+ Y. p8 v! u% q0 r3 D1 X! w& bset trade-record-current lput([local-reputation] of myself) trade-record-current1 ]' ~; T; Z2 F% l2 W" W  y
]0 P: Y. l( c) q, }+ ?$ F; M9 V  l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" P% T) b3 ~' t+ p: U$ J& T+ S
;;
将此次交易的记录加入到trade-record-one
, Z4 u; m3 F* s% dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) @+ m/ {% I8 S; p- w4 ^( g% L3 [7 q
let note (item 2 trade-record-current )
5 z, W$ l8 W$ ]7 t3 e* B  y" ^" c0 gset trade-record-current
4 J0 F( ^+ J* U(replace-item 2 trade-record-current (item 3 trade-record-current))

* u0 l+ c( a. `7 tset trade-record-current5 K: b, e' z/ {+ p- h; c5 ^& c
(replace-item 3 trade-record-current note)
5 h) [* `, J, H( ~. w
: `9 b0 y. R. T7 i% F( O% Q
5 T. d$ `  u+ @  P+ ~) n
ask customer [
8 n8 f+ d+ i; [+ ^$ H. Vupdate-local-reputation) y1 f. r% M8 y: j3 Q8 {
set trade-record-current
# F/ v1 z* V) C7 I& c; T- m, i0 M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 f2 Y7 @4 W1 ]& Y& v]
* l2 l' ]! p0 G: `) T: I5 K
% D7 X) |' e2 S5 b1 ?
, D2 `5 u1 c5 B3 x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, t  {0 L' X3 e7 [7 p
. R- C) _* s" _% R2 I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ O" P; @. e7 W: J: k  J' T- U;;
将此次交易的记录加入到customertrade-record-all9 K+ }  C4 @" M; g$ \4 U3 ~
end, m6 F$ z. c1 c+ S1 d+ e
7 j  i3 E8 K5 r! L& ]
to update-local-reputation& c$ O+ m! c6 V! y; p3 }
set [trade-record-one-len] of myself length [trade-record-one] of myself1 w# a& f& ]: n' b+ k1 l

6 G. w7 ]/ O' ~, P8 x5 i5 z: O; n; r) |) t
;;if [trade-record-one-len] of myself > 3
: h9 C3 q: z2 f
update-neighbor-total; I* S* i, [. M( \& H3 L; \
;;
更新邻居节点的数目,在此进行1 a9 J) v5 s& y! y
let i 33 N+ G& y, ~+ v# L. }
let sum-time 0% P- v: L6 A8 n+ @  M8 C/ A8 {
while[i < [trade-record-one-len] of myself]
0 Q2 U3 R: d# |6 e[
4 M& B+ b' `* x! \6 v1 i9 X" vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- }$ E* j1 {5 q1 V: ^2 ]set i
0 g) F) R3 S& L) K$ r' v% G( i + 1)

2 Y7 O+ G8 q! V& `% Y]
7 h( P9 h1 M! g; F) f1 [let j 35 c( B3 k9 |. @- |: k6 U
let sum-money 0
8 q; p% n5 D3 O: g% u. ^while[j < [trade-record-one-len] of myself]( n- P6 V, {3 u7 m3 A+ J
[
8 ]& M+ u$ B4 N% K4 V# Oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
6 S* S% v% k7 O' |" pset j3 U8 n0 J/ w5 o' i
( j + 1)

! c8 Z! X; V9 J# E]
7 E3 k1 |% y, M  [/ d7 llet k 34 F& }5 S7 H  a  i- e
let power 0
8 u; e1 ?. f2 h8 Z8 U. Q2 Q" Slet local 0
0 |4 M  O% O: f" b  t+ f3 qwhile [k <[trade-record-one-len] of myself]
! k% ^, a8 ]9 j5 x[/ _1 [9 r; R) V% M% d/ v
set 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) : H- [9 C6 l  ~9 N7 y
set k (k + 1)) }3 H, i4 G: g9 ~3 `
]; {( M8 x# w* b8 ^7 I: x$ S
set [local-reputation] of myself (local)
( h2 E( ?' ]: }3 _5 g+ @end
7 {4 D5 S+ N+ E4 D2 _
5 o! m  ]8 m  |: C9 g: N9 i; K4 hto update-neighbor-total: O+ J7 _2 s# R* _
+ Z3 w9 m" {4 n7 L) h9 Z' Z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ o/ @# X' B3 ~
' Q) A4 m! ~2 I- Y
' }: @2 y4 ?. }' ~
end! @$ i* j) f2 n( c1 O5 I7 J* }

0 T! G( R- U1 U4 H  y; e  Kto update-credibility-ijl 1 B! ^1 B+ H$ d( k  E( G7 L' `' K

/ A# ?' p: h& M1 w9 {" O* t$ z;;
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 Z) H) q0 r) r  `5 Xlet l 0; z6 D2 H! u1 _: A5 Y
while[ l < people ]
5 H% Z9 F, u7 H/ ?( c;;
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
2 L5 d2 T% c! Z8 O6 I: D[
) T+ n& ~7 k* z- Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ Z/ T% F# x( m/ R! v; S  [
if (trade-record-one-j-l-len > 3)) i! I7 M* H" N* i# c
[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* v+ ^) @. z0 ?# S
let i 3
" J' y( \7 i0 v; ~( Blet sum-time 0* k" @' P/ a: N0 Z
while[i < trade-record-one-len]4 m7 L- b+ R& G6 }4 h  n1 {; m/ ]9 ~
[
( ^( Y* l* y4 rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 D' r4 d0 l4 k! G( A
set i, t3 B) U+ s7 u( o( W; O6 M
( i + 1)

. c( b% H+ Z+ a' Z8 @- O7 P) t) S]1 f+ t$ w% ~9 z* ?- ?
let credibility-i-j-l 0" n% u0 m3 i. p
;;i
评价(jjl的评价)
4 Z5 E1 R: |$ d; |7 j, ?let j 3
5 ]4 R5 L1 D- j$ c% z8 E5 `  ?3 y+ elet k 4* ^# b1 U9 O  v! E' B. `7 a1 B* @
while[j < trade-record-one-len]
6 U, ?  `# r; g' h( y[- ^, E7 a% J0 D5 T$ v
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+ k) T$ A+ d8 C4 ^  Q
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)
% G# G7 E+ a" U) A  [8 k7 H) d5 jset j, G. E- m2 L* H9 N5 j* x
( j + 1)

) S& r- p4 l4 a7 X$ P: n3 h4 [7 V]1 _  @) e8 G: c( o
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 ))/ F& `0 Q* ]4 J& _6 U

3 P2 X6 J8 o4 H* U- c; ~; F

9 y% x9 z: ^& j- S+ }- blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ C9 D/ J9 c3 Y, ]  Q;;
及时更新il的评价质量的评价
: I+ _! i1 Z' i" R. G0 @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ j. ^# [0 X4 F- G7 B1 m, d
set l (l + 1)5 f4 D! v* T; q8 N; ^" p( m! Y
]( \. u- H) I- J( K! B7 P) m
end
, _8 o/ B+ Q* l3 }5 |) a% E
" f, }/ R# X! o% r; |to update-credibility-list
: ^2 x! m6 w/ T4 g1 ]let i 04 X: m$ O4 w- B( D1 H& ~
while[i < people]' @3 q' Z+ B9 |$ }( j4 f
[
) N& r4 O3 p( q* Flet j 0
- i% ^6 @! C2 G. @# y7 U2 Hlet note 09 y" P8 b* ?2 p3 o, t
let k 0; a6 v0 |4 i" p9 O/ v. w
;;
计作出过评价的邻居节点的数目. T: F5 a: B% E  D) n
while[j < people]0 V6 ?) U4 j0 T1 N( H% t3 ~5 D
[
" Q; z+ N1 \6 I  l0 |; Oif (item j( [credibility] of turtle (i + 1)) != -1)
2 S. m, ^9 j; w3 @8 ]+ e$ k;;
判断是否给本turtle的评价质量做出过评价的节点
8 e. B' S% f7 Y# Y" B, g( @' ^9 t+ _[set note (note + item j ([credibility]of turtle (i + 1)))1 \# t; {  E+ n. t0 E, d3 R
;;*(exp (-(people - 2)))/(people - 2))]

# N. W# _+ v8 q$ ?" M% u; g8 A* fset k (k + 1)9 W+ m) p( I7 z. T- d! [
]+ r6 @2 n5 \1 `% N
set j (j + 1)+ P7 M5 @( i1 e/ f
]$ H: ~$ {" {" S! v8 T
set note (note *(exp (- (1 / k)))/ k)
- j/ |1 h, K. s. s* S: j, eset credibility-list (replace-item i credibility-list note)
  E1 j% X* M4 o* i- }7 rset i (i + 1)/ y8 E  Q: T% R  _4 \
]8 h  ?: `! a! H! {* O
end
" M: y3 W" F% G9 z* E& b4 G4 a2 |% n0 a4 q* Q/ N
to update-global-reputation-list
2 U# }9 N8 Z# y" A) Z4 rlet j 0  W6 \% v+ V/ o1 L
while[j < people]
" C* a' W2 _5 R/ I% O, D[+ R3 b2 j5 i" |
let new 0
& T* q& V3 w! e; S* M/ r;;
暂存新的一个全局声誉
; R$ }3 |+ M. _. flet i 0- N3 e& U$ H( L
let sum-money 0
: g. b) B2 R" z5 r2 xlet credibility-money 0
" N5 R# q1 w' ~; ]while [i < people]! E. Y  N) ^, d( x& `- L6 [6 @3 K
[" m7 }" U: E0 i7 @
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))' _& J4 f+ `7 A0 S" {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' i2 S2 l3 a& _, q
set i (i + 1)- q/ u# B1 `2 s: R
]
6 Y2 ]% F4 R) W8 ulet k 0% X5 o+ w# K, ?- Q1 q$ d
let new1 09 j* x) @. |. @7 J, [7 C
while [k < people]3 \, [5 g5 S4 K9 b5 u4 @& E1 U
[
# Y/ u; z# N, B0 @, zset 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)% \: h/ s2 u7 ~( g# K" E
set k (k + 1)* z; n# B, V( |4 C' K" C; h3 l
]
# B- T  H( |. b$ ^set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
/ T$ I  P0 G# x& H' Kset global-reputation-list (replace-item j global-reputation-list new)
/ G( ^5 e) Z& K: @+ I. C8 f& Bset j (j + 1), B  [4 ~  s2 M' w1 V6 D% M
]4 d  W/ _* a# v/ A$ W
end1 i; W4 ?( `0 I" R2 |3 R6 b) n
$ S2 [/ J8 U; Y

/ S4 _4 _8 Q2 q( x6 b
- |' E, f2 `9 h& f7 H+ [9 |( {to get-color& s+ F1 N! c! {2 r. O

$ B( V) H8 X5 [, v; A7 Nset color blue
! i4 a0 J1 A1 S- e3 F0 a: l0 @
end3 b. b( c2 o2 @. J  ?  {+ V

; F+ ?3 R! ^$ @8 T" Vto poll-class& _" E1 y/ Y* y) v" {$ \
end
4 y! i% z( }& J( N" Z* ~& L
- E* C: N! e3 ?0 X3 E8 U" ~to setup-plot1
/ d" h- s4 m( R6 H9 t
/ h) s/ M- d$ sset-current-plot "Trends-of-Local-reputation"

/ |( ?2 `( q  a) L* D& U6 ]/ s: D3 Q) G7 b6 v1 m
set-plot-x-range 0 xmax
4 ]. J5 w8 m- Q- d
' e5 }/ }8 H2 S& n" V% _3 o# x. R
set-plot-y-range 0.0 ymax
& i; a: ^4 R+ F8 u& Y* E/ r
end
& z% X  l$ \& s$ x2 [! i9 r, n7 a& v* m1 q" o$ e* u
to setup-plot2- r( N7 ~7 f- B( w* m7 m) t  [

$ t2 x2 W& g7 L1 t. R% @8 kset-current-plot "Trends-of-global-reputation"

, I9 V3 K+ g  x" d* d) n
1 P  U1 q' K7 I9 u- M2 i7 S2 X$ W. Zset-plot-x-range 0 xmax
# O# w) @# z- ~3 t% H% ?  n4 W

! j! N7 D4 M- D2 n% w9 nset-plot-y-range 0.0 ymax

- Y! m6 k+ T: \. dend
! a# m$ F2 {/ W: Z, z) B; T2 x4 X/ X: l# s. H5 q& B# \+ N* a' c0 Y
to setup-plot3
2 S1 t8 `* C% E6 f$ @3 b2 o/ I" d
0 Q% a7 ^: R4 P3 }/ d' ^; Fset-current-plot "Trends-of-credibility"

& \( t- v5 y$ P( F- T
  [) E) p4 P5 l3 O. H( Bset-plot-x-range 0 xmax

4 o% q* Z6 {3 L3 p4 t
. n1 p4 ]. u: a( uset-plot-y-range 0.0 ymax
  n! Q# H% E9 q& c5 q
end$ ]: [0 G" l' W+ c4 N4 O) x8 P
' I2 N9 g( I( z( g# K% `
to do-plots9 f5 }5 d" _' D: l
set-current-plot "Trends-of-Local-reputation"" o0 b/ V1 m- F5 ]. \
set-current-plot-pen "Honest service": F* X8 M2 Q. e. K
end
, {9 w6 l; r/ c6 |, [8 k5 ~( d+ Q6 i2 W( r% z
[ 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." }: h+ L& c. J& j1 M. Z7 [- m" y
. S# q6 X1 f9 C% y  [' G% G" l
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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