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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:( v; W5 n: g7 c
to do-business
( G5 L7 ?9 L. ~% S% s rt random 360
% @. \- @: e: a/ ` fd 1
0 [# H3 c( W  U" H0 g# c ifelse(other turtles-here != nobody)[4 [( k  C/ [" o! p! \7 Y" j
   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.& q) x  j8 \, W1 t
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 ?7 b3 t9 G. ^- {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' D( O. g$ v7 D  Z9 n6 k6 b
   set [trade-record-one-len] of self length [trade-record-one] of self
  d# }) C& K4 o4 s+ F# B! k   set trade-record-current( list (timer) (random money-upper-limit))
+ n5 \) g& E1 K, N' p! p  q; G8 g6 L5 _. V
问题的提示如下:
2 o. x2 y/ W& f+ Y
  \3 y% s; k$ }5 X. J2 e1 herror while turtle 50 running OF in procedure DO-BUSINESS
* z) l# D) g: s6 R- t8 f$ u8 J! p  called by procedure GO
. v' d/ D- {: }OF expected input to be a turtle agentset or turtle but got NOBODY instead.. t: r" e/ g& b$ W+ i1 u
(halted running of go)- E( w. x' M4 b# [4 ?! ?

) p6 K% {8 `1 t$ o, x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~~
* g& C0 w" _  i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" S' |1 L1 {+ s" ?' f
globals[
) m8 b9 d1 z  j* m4 d7 Gxmax
7 K% Z" ~9 O9 T  Iymax
  g8 a' r! O  y2 C" Eglobal-reputation-list" [  P. E+ T& Z, S+ L  N6 Q& y

- h; i) u; ?0 W& L5 ?* M: ^" j;;
每一个turtle的全局声誉都存在此LIST
7 ?' K+ ]. T# l$ }! V- Dcredibility-list
; f3 z$ m4 }" `;;
每一个turtle的评价可信度" [$ M5 {& g# H/ _' w7 q
honest-service
# R' H% [3 x  i8 zunhonest-service/ X* o6 U0 @8 Q. |# Y7 y
oscillation
2 F, D, K. ]- Nrand-dynamic
; _9 S2 F4 h. F  r8 `# Y]
/ c9 x- ?( w% q/ q, d9 t: {9 F  o+ |) J! \
turtles-own[. b# I5 D8 E. b' A. N2 s. |+ p
trade-record-all
, c4 @% z! j1 `4 A$ s9 U' e;;a list of lists,
trade-record-one组成/ a5 A, ?; ]! \' H7 j* @% m$ }* Y
trade-record-one/ n( Y1 P% K) Q7 n7 `
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 n, m  |+ ^: |5 I
- S8 h) Q, y% e6 X/ m
;;[
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]]
. q! O8 y& H0 N( O4 ], |* Ktrade-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]
# p* v8 \, i/ Z0 E( c3 C6 ^2 qcredibility-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' b, n$ [$ ~  s
neighbor-total
/ _  k% }% `: e: C5 B7 s* l, g7 ]: v. O;;
记录该turtle的邻居节点的数目* a7 K$ b# e- Q
trade-time$ G" }, Z, I. ]
;;
当前发生交易的turtle的交易时间
9 a/ a/ G- V0 ]5 P! I; _appraise-give2 P4 U- |, d. |! r2 V7 H  }
;;
当前发生交易时给出的评价8 n. z7 g/ {6 V) c
appraise-receive
8 e1 U( E7 ?" I, y$ z;;
当前发生交易时收到的评价
2 h+ @4 e2 B$ ?5 x  b' D- I! Xappraise-time1 t! c! k: v; K! t/ C. W% q3 n* I
;;
当前发生交易时的评价时间. J5 ]4 f; X6 L0 B) Y* S. Y* p  C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  h8 u4 `4 i$ I3 U
trade-times-total
4 e1 B# i( w" I  r, D! ^1 m- H2 ]9 g3 l;;
与当前turtle的交易总次数2 O! \9 p/ Z# h3 h5 B9 ^1 l
trade-money-total5 \  S; s$ Q& g9 R
;;
与当前turtle的交易总金额5 J: W( y5 C' ~/ E5 ]( S; T
local-reputation
6 r# a! U# k; _6 Kglobal-reputation
' r. \/ V- V: \2 ^credibility7 b$ K# V9 j1 {7 n5 y3 P6 g6 c' E
;;
评价可信度,每次交易后都需要更新
* ?4 e" w+ m) h/ |7 D; F8 Hcredibility-all
) a4 _0 P: i. D& ~0 c;;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: O4 T: g0 q8 a3 A5 p
5 }( W, P, }9 l- V
;;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
9 @. v- W: i# B4 s1 scredibility-one
; ]  B9 C& @' V* y8 y2 a;;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% Q' A- r3 H% v( z  G4 F- q
global-proportion
" l' Z5 T) a* k! m) [customer
8 ]7 [0 A/ E) j5 @7 }) P+ t# M+ R; o  ^customer-no& Y. r* c& p. l  e3 @9 d
trust-ok' `+ w& D0 X% L$ Q4 }
trade-record-one-len;;trade-record-one的长度
* M: _% y3 g. z8 c]
! Y# Z  {1 ^# W! t* \" k3 J( a- n: @4 D; r
;;setup procedure
* k$ k/ C/ e! `" h. t( k  N- @. I0 j) G  Z6 B
to setup  K0 Z" c8 g+ o
5 S$ H' E: F# [/ q, n2 h. U/ f& N
ca
# e% w) c2 n% D2 ?. h, n
# d/ g5 n2 Z( |9 G2 H( ]
initialize-settings
" H; u* D; t! |$ W
6 C# u0 ~. [2 G- X! R3 a$ |8 u
crt people [setup-turtles]

- D( y" H" l2 F8 N! [
% l4 N- W9 v/ u  h, m1 Preset-timer
+ G) a2 L/ h. O+ o: q! |
- h; N, H9 e4 w! S
poll-class

) O$ ^' {# [& w; L& P( e! b
* A3 z3 `/ j+ N, r- s  Asetup-plots
7 j. r' q) G* L$ H& F) p- J

8 C' S- D$ l6 mdo-plots
7 E2 P2 w, |/ D+ O1 Y5 k9 ~
end7 W% ^9 i5 [/ O

# G8 v# r7 f. ~& |to initialize-settings
1 [  r" }7 `- L; Q; R- g# e5 l
: p0 h6 |+ t) t% s  I/ e2 pset global-reputation-list []
( q! y# @5 K4 m0 ^; ?
/ H. L# k, K% Q6 ]
set credibility-list n-values people [0.5]
" E4 |. c4 B4 L/ l
# G, F* G9 M$ v! _! z
set honest-service 0
0 U) ^& B0 q/ N$ g* z( H- ?

  P% ?  y( l4 n8 T6 L: Qset unhonest-service 0

0 @) _% q& f6 k
% b0 G% E2 ^7 R: Dset oscillation 0

" Q3 \6 K+ Y# n  V1 P7 \
) `- j5 @; b3 Nset rand-dynamic 0
# d; J5 `$ w5 d. d" ^# `
end
( p  j3 ]4 c) l3 X8 E- t! ?# @( A" W% o: `$ D
to setup-turtles
' |+ D5 g9 t' _! p' [& gset shape "person"2 Y$ F" Z% v/ _
setxy random-xcor random-ycor
  j* x: i/ z# \- X5 Q7 X' {set trade-record-one []
4 e1 M5 D" l5 _4 }) K* P0 W; H
- L; y8 x( f2 l
set trade-record-all n-values people [(list (? + 1) 0 0)] $ Y, y( v& \2 o( b3 u5 q" B# U

' G0 w$ z& w. c( c7 C, }set trade-record-current []
; U9 S. v6 l3 u" q8 `* Eset credibility-receive []
; @$ z) I; A. hset local-reputation 0.5
0 R* @. W  m" l# g/ Y. \set neighbor-total 0. K9 q8 W# z* n1 G7 M- }
set trade-times-total 0
/ B6 s) D* V" ~6 e( G+ iset trade-money-total 00 }* F0 Z( b" ^' N$ t3 `/ Z1 j) Y
set customer nobody/ a3 _' O/ p# y' _
set credibility-all n-values people [creat-credibility]; m) o) ~! [* T4 ]! i5 K- b6 `
set credibility n-values people [-1]' X1 P' q/ [1 @: g: l: y
get-color
9 a  c) s* j+ o. {7 b" p" Y8 G! r

# O# N; v+ N& D8 uend/ c1 |( @3 T- e
- W& t/ J. u: a
to-report creat-credibility/ L8 s9 V0 U. u  ]) V3 z' {8 v
report n-values people [0.5]1 q9 k: H$ o  l, Z0 E  y. q6 }4 O
end
7 y% Y* a/ k; C6 A- B) O- d
$ s8 w' ]( n8 U" r. Ato setup-plots% `% N) F0 }9 D! A" x3 X
/ z- h# P  d) n; Z% k$ a  M& C
set xmax 30
/ D& z4 ~0 H8 U; T6 |! J# S+ ~

' |& V* o0 h! A( E0 H+ X8 v* l. w, mset ymax 1.0
' v, R5 ~  D" e% q# H; `0 e

# V  z7 @  U: wclear-all-plots
6 h/ b  l2 T+ h# ~2 q( ^

* S' d( I- O! [% U+ D) T+ xsetup-plot1

; a0 N$ j( B/ w+ p* g- t4 _
3 P' u' D& e9 c' i* Isetup-plot2

- ]& G0 y- }7 Y: P$ X; `) W  m+ h" y2 Z* G! l
setup-plot3

' y+ r$ C3 W# `+ k  D; Pend
2 W6 i& ~& ]: }; z4 m7 W/ m. q
+ h! c) z4 ?+ G3 r;;run time procedures9 b- I, N6 O; U
1 A* f! l/ ?. w6 j  H# q- v
to go
5 l4 c- ^8 ]  ]( b6 c* d" ?2 t- {# E0 E: g
ask turtles [do-business]
! j. j; u! y, R% h+ i* ^
end
; m' ]2 Q8 b3 [; C. s3 i0 y7 W
to do-business
& `8 l+ q. Z( x2 k7 b

5 O+ f- ?' [! o7 S7 A+ @
8 y7 }; l# v# X5 b3 c0 g. [- mrt random 360
2 N! [; g! B* [5 T* ^7 x
0 y7 L- _4 {- |0 g% P) a$ g
fd 1
; U$ R) k# b- e9 ?. A# U+ c, t. z
9 k) h' ?1 Z1 d
ifelse(other turtles-here != nobody)[

5 E1 y9 |4 p- b! @5 N$ b$ w( C* {5 J  Z9 ^: |0 O
set customer one-of other turtles-here
$ [1 A  w$ f0 v. N' M; a% s
) q. e5 e& X- W: \2 C) S
;; set [customer] of customer myself
# x( K9 F. n  t, h

4 w1 A% c: G$ a6 X9 V6 qset [trade-record-one] of self item (([who] of customer) - 1)
- R9 }" E4 P. R# j6 d[trade-record-all]of self6 G$ |0 t1 o1 V, s* F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& E" G8 B) D9 U5 D/ ?
5 T% Q& D- |/ s! V0 D+ Gset [trade-record-one] of customer item (([who] of self) - 1)- M* M) K4 E0 v4 G4 L0 V
[trade-record-all]of customer

# K6 k; d9 X0 D8 {) W. V# \: e1 Z8 V) {
set [trade-record-one-len] of self length [trade-record-one] of self

  v3 x  N# ]( m2 H$ w+ G: Z2 \/ v% K8 w9 e, ?
set trade-record-current( list (timer) (random money-upper-limit))

  B- t) F+ [( T6 N# h4 w" ?( _3 p  L# e2 u" l
ask self [do-trust]
  d' a! s4 x+ E2 A* w! E/ B;;
先求ij的信任度! R3 m% ]+ u& E; I/ E

; _" w, S5 X' w( g1 q$ Nif ([trust-ok] of self)
9 S* W# R; {- @;;
根据ij的信任度来决定是否与j进行交易[
# G/ x) }# N7 _( z6 s* cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 F5 S) i$ N8 e+ Z: k) ^

0 K) R8 Q8 o4 N/ ^[
( Y1 Y: ^# J! i" U
; T7 h  `. {4 T  f" `
do-trade
$ y' ^) F7 t! H+ ]1 f. Z* Q  Q

* E( b+ q$ U  d' G4 D: e0 `0 kupdate-credibility-ijl

7 S# |1 M* f7 s" A& K) j1 s! _; ?/ y- f& f$ L( g# V' Q
update-credibility-list
% W# s0 ~) f, ^( |; Z/ H: S' u
& n* R# B( y' m

1 ~% k0 N+ V) ]4 ~0 Lupdate-global-reputation-list
  v6 d1 I8 ~0 h) k8 u# r  e

3 U7 b; D6 l+ Qpoll-class
" j* o$ J% L% V. j+ _/ H! H. \& _
2 z$ r. u. I* w8 V8 I) p& K( R
get-color

) P. `# f8 @& ]2 z' j5 u
9 j- b% ]* s, k3 I8 k1 |- G. ~$ l4 s]]- X* ]) s& \9 |

' S! |7 T5 d) m& |* F' {& |;;
如果所得的信任度满足条件,则进行交易! j; y" d8 z( h' r3 C
: G1 S& d0 ^! S: |$ K8 w0 u: i
[

8 |4 l* V1 o. {0 v2 b- g3 a: I6 J, A6 u
rt random 360

' t7 [+ F6 g- M' [$ ?% g. {6 U! v  _  _
fd 1

. p  X  N" h4 l! t: }( F' D# [
# x# m. J2 Z* U' d; C; f7 q. b* w]
! R; V1 R8 ^  }3 d3 {9 a6 B
# V1 S) M7 c" R# b' C% i
end
1 r4 {) w1 B1 [( k( K$ }

0 U+ U, ?3 [: H# N/ m1 bto do-trust
# y* ~% `* Q7 B7 W5 Iset trust-ok False
5 N& H5 j2 O+ I- V( g$ ?1 d1 C6 h+ K6 D( u
5 J) _  c/ M5 h$ p/ k$ h
let max-trade-times 0
# m7 J0 M  W- c# q/ q- h$ cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ U3 p. k; P1 llet max-trade-money 0
9 B2 P- s2 f8 j8 J! G/ _) ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 @. n: i! I0 e; L- ?let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). O* D! k# a/ o: d
& }( h) F# N+ k

) A! `: i% h3 o' _) [6 B. ]) W9 qget-global-proportion
; X8 u+ t# N/ S# S) T/ [let trust-value5 `0 Z2 g% l3 ^$ j% K2 ^, x
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)

7 k/ ?. y& O8 j% Mif(trust-value > trade-trust-value)
9 o8 w) P& R, _# s# i[set trust-ok true]
! b" C$ C- s. s7 [  r- g, L$ ^: p# uend5 k+ e9 k! X2 k" m+ L: p7 W
. n# f  k* L! |; q, [
to get-global-proportion) O. R* M+ Z3 f/ Y& j2 j/ k# t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ V/ v$ N- ~+ ]% `  d% x[set global-proportion 0]
) f. A0 Q9 R( j9 e1 [: [[let i 0
2 {0 N' O5 a! T; t" o8 _. C  glet sum-money 03 F- A. Q% L( I3 X' z4 F
while[ i < people]$ d+ C- P' {1 J5 @  x
[0 s; c, u+ j) M& x, \3 n
if( length (item i
  h. t1 R; d, C9 s[trade-record-all] of customer) > 3 )

' A9 P& J* U  q5 [) r; ?8 z[
  G6 Q- u! H8 e3 J6 }+ Sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& s+ G" `3 E5 b]
/ X* H* \$ }3 S- D]0 S/ ?. s# H% l: ~
let j 0
/ G( p3 w" `( P% rlet note 04 \  M" w( W6 W$ x/ j5 [
while[ j < people]  `0 ]( t, T1 W2 ]7 L& K& L
[; [0 R* b) n2 Q2 H$ R9 ~+ r
if( length (item i/ Q$ y) e- c4 R
[trade-record-all] of customer) > 3 )

! b/ {9 g1 S1 a, e7 O$ F* ^[
& [! f4 G7 a( z. ?9 |ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 s0 i5 `! {$ y3 f! M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ x% w) a4 e8 q4 }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 ]' w: x% o& ]: K+ N& C4 v]
6 l3 Z( W1 ^6 k. m]6 y9 Y" J. M9 x
set global-proportion note
' A% ?0 i* P+ z  @* y# H4 t]
7 [: E3 v& {! ?+ F' Kend
# g3 X8 |2 G" d& h- O, u" m& Z8 H3 V& [! f, z) J- S7 B
to do-trade# I0 u- Z! r/ P' [# T
;;
这个过程实际上是给双方作出评价的过程
1 c2 B6 p4 y$ K$ x, V. o. O  Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  G# o& ~) w( Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ G4 F0 M3 U8 H/ O. dset trade-record-current lput(timer) trade-record-current/ ^* E" t3 T" |1 T5 o
;;
评价时间
7 F& a; S7 @' _: W) N* Y) Nask myself [, }5 _: d6 Q: i( R
update-local-reputation4 L% l5 T/ y! H# m# [+ P3 C
set trade-record-current lput([local-reputation] of myself) trade-record-current
% }" P2 J8 O/ _" Y% {. S]
1 z$ s; F) h/ C5 w' gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 n) |5 Y9 `! e6 W5 W' k2 J;;
将此次交易的记录加入到trade-record-one% K& Y. u$ p$ N) p* J$ U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" Z( Q1 `( I: V" _! p) o7 _+ o) w
let note (item 2 trade-record-current )1 }+ ?" v8 }* b# {
set trade-record-current
6 l; \2 D$ H/ X+ {, _0 B8 Y(replace-item 2 trade-record-current (item 3 trade-record-current))
" ^6 o/ A4 W1 t; a; N5 S+ ]5 y& i
set trade-record-current
! k4 T& [: [9 o(replace-item 3 trade-record-current note)
  O5 S4 C. u3 P0 {2 V. l" Z, P( `. F, z& z9 x7 A4 }

+ A' p: F' C: @! @ask customer [
7 p% o- L5 y; D# }update-local-reputation
% g: g! |3 J. U' Fset trade-record-current5 L; D+ R/ ^( m3 N6 P1 h7 F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% |. z4 {' t5 M8 U) V$ ~3 A]
9 m/ C! |* f* D
% g+ ?9 q: J$ l$ _3 }8 m( \
: ?5 y! E9 X% ^
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ R+ p% ?, O9 [; T! y" _/ m' A
. Y- p  h9 C  C4 s% s; x) N
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 ]7 n7 }$ E9 ^$ v0 K;;
将此次交易的记录加入到customertrade-record-all
, K; z) _* W# ]% E- lend
2 r/ v3 S; L6 `( s" P: ]6 z( ^( Y! S! m% C! J: \
to update-local-reputation
9 q) x. E( Y2 v( r* Y/ Vset [trade-record-one-len] of myself length [trade-record-one] of myself/ \4 P7 y, I9 L, }, C2 Y# f% O
( T/ a( @/ j$ _& e5 Z& R

; @& K* u( v" U) B# j* j/ z. ~( ];;if [trade-record-one-len] of myself > 3

+ H  F; f; p; ?- o% Fupdate-neighbor-total
: n* k6 \% E) ]/ O) c  E;;
更新邻居节点的数目,在此进行
3 X# G4 |5 A5 `* Tlet i 3
/ ^+ C7 [% E. }6 Vlet sum-time 0. u) I" S6 `7 A( X" M
while[i < [trade-record-one-len] of myself]  Q9 j1 c2 }8 N
[
9 @# Y2 o& T+ I, i' Q8 eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' b! r- `; I% V, Gset i
9 n& R3 B1 a& w. x. O( i + 1)

1 n' }" C: p  U& q]. c, w; v* H) v/ N2 D
let j 3
  k6 z% g, |$ f# M; Y; n& slet sum-money 0/ p4 r9 e( c. k1 J; T, w" L( o
while[j < [trade-record-one-len] of myself]* O+ |3 H4 ]# {' N+ V$ g
[
3 S$ T; p8 P& q  p6 i; p' yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
: Z& _' p! w/ x  ?& ?8 S5 k: L: cset j0 B/ N. O! y+ b0 Z
( j + 1)
8 o/ I$ I4 O% P0 p2 K  a
]
1 [( j" |7 X$ e: Flet k 3
# _4 l% w/ m7 d2 ^" Flet power 0/ o) s' V/ x! M
let local 01 G8 b; b8 T2 }  e
while [k <[trade-record-one-len] of myself]: ]4 ?0 g9 V5 g1 c
[
  n2 e/ I4 J% S8 hset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
$ _/ M- {" w# `1 mset k (k + 1). L, L9 i: V. Z/ T; g
]
! i$ d8 Q# r1 w" nset [local-reputation] of myself (local), x) r% E6 z; H( w/ a
end& i- P+ \1 j5 t2 [% A+ z
# J/ r5 |( I* Y& r
to update-neighbor-total: r2 E; M; e0 I3 [' e* }
7 r; G" K) j% f; J. |. L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 u, ~; g: r" s6 E8 y

3 c- [% [% \! e* q
9 H5 n, R# [% `' U. [8 }& l
end/ i1 f$ L/ `/ h6 o

# w( \$ E8 {6 H0 c- d& H; Nto update-credibility-ijl
2 m$ }7 U# Y' C4 ~  p5 u
8 ~- l6 A7 |' e+ W9 O;;
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。2 L! ?3 L8 ]8 N+ k- F
let l 0
. T0 U. d% j" D4 Wwhile[ l < people ], d" F) Q6 N) m: f# f
;;
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 E6 C0 x+ ^9 x% r0 l8 s) |[; O% q" T5 w6 v. L  A5 C1 e2 K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% T# }# \2 K( N/ |5 d- S
if (trade-record-one-j-l-len > 3)
" w# t7 D  }' T) s5 H3 r5 u  u+ f$ r[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' o+ k/ c# x# F- Z/ X
let i 36 t& A( M. s6 t* {& h# D- V
let sum-time 0/ m* _' e$ }7 ]
while[i < trade-record-one-len]
: |4 A7 s# F9 d% e; X0 x! y[$ ?( z' V/ b% u! I% q- T- h5 o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 N+ n  N4 Q3 i, h& L2 ]4 w
set i3 `- ~/ f1 i# {$ {5 Q  c7 o2 X( W! V
( i + 1)
, f/ Y, `4 B/ \  R) u
]
5 \" V5 G( M/ b- q# H9 Klet credibility-i-j-l 00 W8 s' K/ n; ^! d  L+ S
;;i
评价(jjl的评价)' N0 v2 {; ?' _5 k1 s0 P
let j 3
4 L9 ]3 V$ N% X, v9 I5 n% b- ^let k 4$ i. v  E6 B0 _2 _# i: _! E* E
while[j < trade-record-one-len]
7 u, q4 X  ]! |- }! t[' e7 D! S6 G) M( k
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& p5 N6 U; R8 D3 q1 }4 o& o& p
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)0 h$ T3 l8 r, d) W$ P
set j: h- ^3 l! Y3 i4 a8 E
( j + 1)

$ p+ P0 A8 p) p. e; ?/ T' J3 A/ `]& j  A) M& G' [3 Y+ K
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 ))
1 ]  D6 r3 M) s' B: {( `; k3 p% Q

! ?* C# }4 d' U, `# y( [3 H7 Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: f) d$ A2 x$ r, x+ u6 _;;
及时更新il的评价质量的评价
9 H) a- m+ B5 Dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 w$ t0 T5 {8 E: |/ I- T6 Nset l (l + 1)6 e# j1 s: V3 L6 F
], M& ?& @, v- d* s  I) M
end& V7 C8 H+ y" t7 _% _
- E) W# B' v/ K9 Q8 o+ Q# j. `
to update-credibility-list4 P! s# r2 `1 t7 \: M8 C' S
let i 0
6 Q! T5 k1 J9 S, P% M) Y9 rwhile[i < people]
. G! F3 i; ~: h7 B! g  I; @[4 y2 I) K: g1 p: }0 ~
let j 0+ S( n) U" G6 U" q8 D8 u; R
let note 0
; `5 a' A. V3 S$ c( Blet k 0
3 `1 Y) ~* x! R( T, Y;;
计作出过评价的邻居节点的数目; H' y) _' K' i1 ^
while[j < people]
5 \- x' N. `. w. j; c( T& y* a[% P+ Q# U% \( i( J. W3 ]
if (item j( [credibility] of turtle (i + 1)) != -1)
* w1 z- ~* ?0 X7 l;;
判断是否给本turtle的评价质量做出过评价的节点
8 ?) M( i- }' e[set note (note + item j ([credibility]of turtle (i + 1)))
+ f. J# }0 U$ ]7 };;*(exp (-(people - 2)))/(people - 2))]

  n$ f5 V4 x- y8 [8 Xset k (k + 1)2 X% F( b: o+ ^) K, n
]" s3 e# e8 T. A' J0 d. [8 O# A" j
set j (j + 1)2 E0 ?9 t( r" P% e& n1 `" F
]) C2 x* w: p/ _) b% V8 h
set note (note *(exp (- (1 / k)))/ k)
; i9 ?( [4 |* G: \7 Cset credibility-list (replace-item i credibility-list note)
1 K% j: A) M8 V4 W' iset i (i + 1)
4 A' L0 h2 v# ]2 E]
) ~* j# M; Z1 m' y- B/ J& Iend
# E; z5 ~2 f" Y! M6 A" E
  s/ {) K2 R! W/ m0 a& T; `to update-global-reputation-list7 _. t' A7 q# i# v2 K+ E
let j 0
% ^7 q3 {1 S8 T5 i" hwhile[j < people]
- ?. y$ m  [" T/ n& a4 S6 q[6 W6 A9 F6 T( o$ d- O5 Q5 S
let new 0
  G4 L5 L1 W$ A2 T0 A. ~' p* w  y;;
暂存新的一个全局声誉9 i9 `# R  y& |1 z
let i 0
) M% v/ Z% N) O, w( e0 hlet sum-money 08 I9 F: H2 Z% p$ ~, w
let credibility-money 0
+ X6 I; h. @+ c: b, S. }while [i < people]
/ f( Y' I) h5 V4 c! b: A( l7 o[7 S- m; ]1 C0 v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 B4 |) W) }1 N" @9 m( j' q( _
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 y* Y+ g8 g8 f$ F2 X- a/ E, N
set i (i + 1)# m4 u0 m0 B1 ?3 O1 S: H8 Q
]2 ]) k9 j' g# I1 ^' o: R8 U
let k 0  x3 ?% w0 C9 M0 a: A
let new1 0# |% j! v: {$ A/ K3 c! M
while [k < people]
. W4 A! h4 ~! @" j' j  w[7 z0 e: k! c* t. B, O
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)! L8 s: A9 X  r! Y* K9 U
set k (k + 1)
* G. c+ w8 C+ |- b, ~+ P]* D( V% d% f) g, |
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; }9 A$ x) M1 j+ o4 o+ k# l0 [set global-reputation-list (replace-item j global-reputation-list new), U3 _# M6 h1 \
set j (j + 1)
6 K0 Q" b" K, _5 m! M1 q  x]* r) l* }- S4 A- d, s
end; K# M9 f6 x2 }5 s/ C2 D
/ G, ~" M" k$ W, d

# g- D$ P$ S, k, p0 Q- v
4 g- J; ^& i* j+ u" C  l6 U: X  hto get-color
4 N" W1 j/ R# c% D. T7 G9 x) S; c- j& T1 s
set color blue
& n- X* ^% U0 I5 I' b2 y
end! |3 m& m/ Z2 ?' z# M" E6 C
3 H( M# [5 K" v3 v" ~: K* o" o
to poll-class
" f5 k; A; ?2 q! h3 T" Mend, Z$ o/ U; J) B0 h! b
) h6 U, C9 c0 k5 p, V
to setup-plot1
  G3 J" C- G- \- f6 U" R# \1 g" K- O9 F. G" g; Y" T! [* Q
set-current-plot "Trends-of-Local-reputation"

: D! h- O5 w  \! C* |/ r# |
5 m5 l) x0 f  a4 r! a6 V. yset-plot-x-range 0 xmax
' G& D$ n( q  f0 q/ Y2 N7 V
( E9 w6 C5 G+ P6 f
set-plot-y-range 0.0 ymax

! G$ o3 Z' O: Eend
# o1 i% j' J: Y: J
& j6 v: p1 n( c' V( Ato setup-plot26 e4 e; ], K. _6 U$ f
* }8 T- L- x) }% P
set-current-plot "Trends-of-global-reputation"
+ I* k4 V' V( f2 z/ d- d

) Z* w$ l& O" r8 B4 ]8 _7 Zset-plot-x-range 0 xmax
" K# ^3 M! a" x& W6 I
3 R4 G# j: M: G* b8 x  D( M+ L
set-plot-y-range 0.0 ymax

" A8 @" U/ |) q; q8 g. D# w' Oend, s& e2 B4 ?" p% X: B, Q

: _% J- t7 b% q9 u0 ~6 Uto setup-plot3% S8 P/ |0 o; p- p3 e0 x

$ H7 c! P1 B# G; J1 yset-current-plot "Trends-of-credibility"

; \5 K0 @) M" W" X+ G
  R' @2 `/ w1 j2 Kset-plot-x-range 0 xmax

$ C: p& z0 |7 W" j% ^8 ~# R* S
/ z0 q1 C2 C! ]5 T4 a7 Oset-plot-y-range 0.0 ymax
  W! }1 }" x$ X- d4 [. I
end4 v# J  B, V6 u& c
7 n& V  l$ {+ e. q  e9 v3 m
to do-plots3 j. Q8 K  \9 J* c/ T1 A
set-current-plot "Trends-of-Local-reputation"
8 ]1 {$ t/ p- k, _7 Cset-current-plot-pen "Honest service"7 G- H. ?1 b  a& i' c2 v
end
, d, x" K+ _2 j4 d( l  S9 Y" U& O5 d7 G& X+ h
[ 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.
. P) Y& t$ n+ t$ l
5 d. e& g3 w/ A' J! E7 H% E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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