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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:
# E: y" F5 \, F' o  n, Kto do-business
2 V9 @: l( l, R rt random 360
4 r' a3 B1 d, F. w$ _& }( u fd 1
# a( h. ~2 t( S. v+ D9 k+ ? ifelse(other turtles-here != nobody)[! P- E/ F( n9 B5 }7 c' N0 k
   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.
. K" T# _6 n( _5 T4 z, m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% g. o' K" I, _( _4 h( f( L   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. N( ~# U: E$ U4 o9 U( b$ ]8 Z   set [trade-record-one-len] of self length [trade-record-one] of self
4 U3 s" }/ P( Q   set trade-record-current( list (timer) (random money-upper-limit))
( S- }6 @1 w' z; x4 }
9 n$ M( l6 u! G% a6 z4 k/ ]问题的提示如下:* k5 q4 J  D* \' r# a3 v

$ R1 Z/ v4 H, s' Z) Y3 D8 Terror while turtle 50 running OF in procedure DO-BUSINESS2 W- Z7 D4 j, }+ r: m0 |1 Q
  called by procedure GO: f7 s0 A! L0 ]; O$ c, l+ G
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' n/ \( t6 N4 S3 R/ g' J
(halted running of go)
& \$ M0 h) \; x4 Y& G& R) ~- t) y9 w7 C- B  k+ y
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
8 m) X$ \7 Z& {# t6 E+ Z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) Q0 Z% R) s; `  D7 f2 T( T
globals[
7 @, |& x! r. Bxmax8 }3 W, h( m9 O8 L1 j- P& ~' S
ymax* D" T0 \3 p& l
global-reputation-list8 P  a7 b  t8 s) ~' ?

$ d7 b: {6 }* V, F% y& C+ T;;
每一个turtle的全局声誉都存在此LIST% m" Z) T; [; @
credibility-list
7 X7 O  i( b3 |8 O3 x7 O;;
每一个turtle的评价可信度0 v  R$ N" t+ Q/ W
honest-service
& m2 _$ Z) j# J8 gunhonest-service; _- Q7 r1 f: N& Y5 `( Y' V
oscillation
$ m! i% D& i' T: @) q4 _rand-dynamic! E. V- c. B4 q' S' N- n: c( q
]
' ], v# a3 h" \' M- T
7 C3 \2 Q' @% \9 q6 X0 gturtles-own[
6 x7 S" X7 _1 g/ O: D0 l1 S8 [& Otrade-record-all
& n& F7 o# b+ `+ w;;a list of lists,
trade-record-one组成- i) x9 Z- z# B3 I  U- k% l
trade-record-one' ^) C& g! x! q8 i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 H0 ]2 B" a9 F$ }" B% z3 P4 A
2 e- {% I' \6 l. o;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
8 E0 t) K/ O" B8 htrade-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]
) [6 D! {3 f/ ?$ Q+ Z! h+ hcredibility-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! Z0 g: g0 H0 S# f1 y( v6 s
neighbor-total
' S5 ~: M, R9 b* Y* s1 \( k3 Q4 l;;
记录该turtle的邻居节点的数目
. f! B- y+ d3 g* h' g/ m  utrade-time
2 ~6 h8 v" |9 T, Y* y/ N) z;;
当前发生交易的turtle的交易时间$ W" [4 M# c, J/ r0 U) s# ]) T% v. N
appraise-give
8 |+ a7 s5 Z# R3 D. e;;
当前发生交易时给出的评价& q6 u$ S! J8 O$ U8 t1 i, L
appraise-receive
9 t7 h* D1 Z7 C: o3 _% C, j0 d;;
当前发生交易时收到的评价  u# I8 K- U3 `8 }" f9 P
appraise-time
) n/ [! p4 l8 z" ^( w" \. X+ l0 V;;
当前发生交易时的评价时间
6 R3 l0 x0 o# w- }2 Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ {6 P! z) ?* v( B* q8 Etrade-times-total
; t, s0 \) [6 h' W) z, w* l;;
与当前turtle的交易总次数
2 M5 ?) n5 e. N0 y3 I, C, Ytrade-money-total6 j8 F$ K* Q& y0 F4 L
;;
与当前turtle的交易总金额
$ b( g' ]6 m) N& I0 O  clocal-reputation% _- h1 i& t; P  c6 V/ G- C, J
global-reputation  t9 u+ `6 M8 P: B2 W! O
credibility
5 l% H& t# d2 E3 k;;
评价可信度,每次交易后都需要更新2 A, r. R( u; N- c8 o- {1 A0 b' P
credibility-all1 G- b1 v1 N) G9 _2 f& Z
;;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! m5 }2 F) C! t6 Z6 n9 }8 C' W
, F& s) R! R$ {; M+ B  k% T
;;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% @/ m  S" u8 S7 P/ b
credibility-one
- q, K* D$ I3 _;;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. L+ m% N" [  n9 l  ~
global-proportion* k. O, j: o' Z- P4 h9 p
customer
1 k) O$ _4 z  I; n& Ncustomer-no
' U" G' P, ?" o8 r* Ytrust-ok
! w; @/ v' W' `6 Qtrade-record-one-len;;trade-record-one的长度& B  W6 A, g' W
]" u/ }( ], {- [7 t5 j* T- B- k: V
4 W( v8 g+ K; J, D" j* }
;;setup procedure
0 o9 {) t) z( o( F: V
2 C  _1 p0 }) D8 D  i  \to setup
" B$ k0 U- b% Y  w8 m# r7 Z! ?' ~2 @) R8 ?+ l
ca
0 _# l9 A; I: O# M. o# {0 x

" h8 d/ T( ^) R! Y8 ^* }5 hinitialize-settings
" v+ ?! [8 r! {" J* ^4 B$ Q  Z+ v
; j7 v* b1 z1 Z' w9 X
crt people [setup-turtles]

/ ]% r& n& |! o* l( r3 d$ Y/ [. ?8 ]7 Q7 h
reset-timer
, q5 u7 T: d6 m+ D6 Y3 L
( _* Z8 p4 l4 t5 D3 }$ y
poll-class
. E* ?' ~, r: O5 E
# ?( f1 |2 v( b" v/ D' u8 {  _" \( i
setup-plots
7 ^0 ]. \: m2 o' V2 q% L
" l) d2 K$ |+ U( S/ [- G4 q
do-plots
5 X. m$ @/ E3 p/ k/ V3 V7 ?, G
end( V0 c  r: f" H. }' q
8 ^/ r3 ]/ D6 ~
to initialize-settings, U- s, `' p0 e
  q8 R- X& C- X3 Q8 f
set global-reputation-list []

7 r+ ^/ \: x$ ?( b! \" N" J, y1 d$ F" j9 v6 H5 W7 t5 j
set credibility-list n-values people [0.5]
' v! D; u0 J* ~4 c, W4 G

2 `) @4 D4 f2 g$ @& C+ ~set honest-service 0

: w4 S; Z  `* }" U2 C# x+ l4 Y4 ~) J" y8 A0 A
set unhonest-service 0
" j) V% p3 D2 {

+ j. W) Q& f& ~4 Q' J3 s& j: mset oscillation 0

9 N7 F* `! G; h: T4 f  f! h% ]: u( j& D; V' e; w3 _; d
set rand-dynamic 0

! H; Y- H3 k4 z7 n, jend. z) b: _  D, R9 Z6 j6 f

) e4 W! O( b  u+ j# [# ?+ `to setup-turtles
+ {) z. z4 h- Aset shape "person"1 J  z8 a) x% L
setxy random-xcor random-ycor% V5 A* l9 x) w! k3 k
set trade-record-one []' c- R; O( Z2 j8 d, ]/ V3 a
6 }, C) S4 x% |* _( Z' _% o/ T
set trade-record-all n-values people [(list (? + 1) 0 0)] & k, q1 a7 ?2 m+ C5 P

- X* W0 k# n7 }0 m& a' |+ pset trade-record-current []
  C7 U# c" H- {; S- x6 M0 C1 ?9 wset credibility-receive []
  @* l/ e4 r1 }$ u. k# Rset local-reputation 0.57 }1 ~2 E- D! o
set neighbor-total 0
5 q- V9 `0 F0 p) S( w3 Uset trade-times-total 0
9 z# @  a# c0 K3 Qset trade-money-total 0
6 B2 x5 O& |0 S5 Z5 D9 x2 wset customer nobody1 V" p: W1 M- l& U
set credibility-all n-values people [creat-credibility]4 G; {3 l1 D1 V7 e" J  s
set credibility n-values people [-1]
: s2 f: N, w$ Qget-color6 b& B3 x. d: q4 Z% m) p5 l
" `! f- k! s5 A$ s4 n4 l
end
& y3 e' x( M" v* n1 @) }9 f" g, \( X$ `3 u$ z& B
to-report creat-credibility
9 U- i# l" U' ?% ^1 ?- ureport n-values people [0.5]! ]( y4 J4 H7 {, g# d/ u
end
% e& j8 o% x$ ]( }5 H1 _, P/ q: `: ]! D0 A: l  E
to setup-plots  h% P) [- r" P0 h
! S% ]$ k( P( v
set xmax 30

1 }8 ?4 G9 Y( ]6 I5 ?
) @7 O; S- ?! u' Nset ymax 1.0
& S" l' L' i! H; _: {
8 F" y2 D. d  j' e3 H+ v! [% u
clear-all-plots

. [! T4 t$ u! Y4 u8 M% r5 m9 Q( _9 Q6 w- ^% ?) ?0 F
setup-plot1
+ G- A/ ^  R+ j' O9 ~. b! o! X5 |

# s" u4 |* k" s, Fsetup-plot2

4 }3 Q: X! H: p0 N
' {9 m4 A2 a5 ~0 n6 p, n# f* B7 n5 |setup-plot3
/ o3 x+ `1 R0 m0 ^3 Z+ W# y2 H- m5 c
end
; w8 e/ j; w- q. S4 z: S9 t) I' K5 I& f9 X! d3 O& w
;;run time procedures
2 s& I+ O$ N( J+ z: z! r% m" r' J- @& C0 o6 v0 ?
to go
# t2 j3 l( t4 j5 N3 c- U: X. g2 ?. K. f# d1 [+ ^, j
ask turtles [do-business]

: K' K2 H1 ]7 l( ~4 i( V: |end9 w6 M. d' Y7 L/ t, t- O& `. @

9 U/ R6 C4 e: a! Cto do-business . h1 H3 J# z8 r1 U
( z: Q/ d8 f# K  }( i! R7 w- i
) L7 }" h( m9 C3 G5 r# w( p3 T( U- l  O9 Z
rt random 360

; L! N! ~/ Z! Z
; D6 U5 L$ u  X  Wfd 1
5 X1 g# B, Z, l; K
. O; H2 U0 V& W9 e) P
ifelse(other turtles-here != nobody)[

0 ?1 Y- L" u( p+ X$ e
1 l5 s! u% O. z0 e) ~( aset customer one-of other turtles-here
/ ?- l" C1 S( M$ j4 B

; R& f  g! Z# K: d) _( s# D;; set [customer] of customer myself

5 W( w) ]8 z# L9 Z: d* F. T( L. `4 x; M
set [trade-record-one] of self item (([who] of customer) - 1)# p7 A* H2 R/ N' y% q6 _# j
[trade-record-all]of self* w3 \! s# O/ v2 `0 ^; ?1 E
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 Z! ]$ X4 R7 i/ N3 I$ x& F

: F2 v- x6 |  J/ f* z$ ?: k) Hset [trade-record-one] of customer item (([who] of self) - 1)5 H. X) T/ U! i: o, J2 _
[trade-record-all]of customer
& @8 b( N$ H. D; p3 }, |
1 D; G) `9 C$ I6 {0 o
set [trade-record-one-len] of self length [trade-record-one] of self

9 E8 o- I. u& _6 `/ ~5 w( V
; ]' m' [6 _7 Z/ b7 {set trade-record-current( list (timer) (random money-upper-limit))

6 F* {" R4 T0 E% ^* p5 O( {+ Y: C- P4 V% a$ \/ f0 j  l8 {- `' N
ask self [do-trust]
, \! G  Z) p6 e;;
先求ij的信任度* n9 m5 G9 N( X1 d
) l1 `* h& S. N# @
if ([trust-ok] of self)* j& _' Q# E8 P# {4 N$ ^$ d
;;
根据ij的信任度来决定是否与j进行交易[  r0 y1 P. y( a1 _# B3 d1 y; e) M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 a4 `3 }. b$ {* ?
& {3 C# U/ c9 i
[

! B$ r2 X, q3 U! j2 E2 f
. m0 d; J* v. zdo-trade

- @& g6 Q, F2 P- Y( }0 @# |& k8 g' {$ b6 q6 m
update-credibility-ijl

$ D' F3 p8 t: n9 O0 A3 Z- i0 k9 d3 r* e+ E* ]: L
update-credibility-list
4 A7 l# b/ f, n( d7 q
" d# S, i8 d0 u% m
1 p9 V" c  n% k
update-global-reputation-list
! A8 H! y5 z* Z7 {' Q+ X2 d

6 \& e' m* E: u8 q2 g2 \+ n0 V. [4 Kpoll-class

! ?! \! K6 D% r* @& k9 {0 C/ R0 i7 c- g/ K+ `0 E6 V
get-color
4 ~0 f+ u6 {6 b% ?) o* a# A
( o/ F1 O/ J& \- w- R2 t
]], U+ h9 G6 [+ ^: ]0 \4 y9 c
! n0 m- O- I: T  \, j2 F6 R
;;
如果所得的信任度满足条件,则进行交易
/ N7 L7 e" ?: E/ i2 L# f
  ~' ]+ P: F% U  D/ _( l- @[
) n. z7 A! C4 Z5 c9 d
1 M6 F0 A1 P$ f- r; m
rt random 360
. M" w: I# w$ w: S: Y

& j# {0 Y( v& c) Q; o( mfd 1
& @# T' ~" ~( c; x' L! J! p
) W7 V$ s: U$ ]
]

$ K5 B' N7 I3 I2 D- n. D3 j# X3 v, f% S# t/ [
end

0 F, M' H3 H& X7 \7 U( {& V4 h+ D
% ]7 C4 Z, Z# m7 x3 Mto do-trust
1 T3 R4 }+ b; f+ M. zset trust-ok False2 O% F! C2 @# M2 @8 ?; D- z

/ ?+ o! |2 m6 h( S+ p' C# |, D

- j- c& E( X5 T+ olet max-trade-times 0
0 F: O; l. q7 D# d! y9 Qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 {+ g- V( K6 p, _' o8 ?let max-trade-money 0; t% T+ d7 g5 n& `. R3 \% \# N. H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 d( r8 A6 s' Y1 m: w, Plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# m4 R8 `( E( y% K8 w' @

1 Z+ h; @- _1 |( e
8 y/ G, i9 e& T/ M- X; D
get-global-proportion
  x/ I( B1 J" i! jlet trust-value
% y' }) S: D  e' O) J' a: O8 clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

' f9 }5 G  A* H, p% Aif(trust-value > trade-trust-value)
. ~& r. i1 m4 h9 I: a$ ]) ~1 {+ @[set trust-ok true]
, ]9 c% j* _( ]5 tend
' ~% P7 x) }1 V- Z9 E+ U
+ i0 o+ K- `" C  r* g% Z! ~6 Eto get-global-proportion+ l1 _7 ^% K5 V5 Y/ e# n. T/ \
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* \5 J0 E/ I& }3 k
[set global-proportion 0]4 z  b" t; @8 N' W
[let i 0& n$ X: P  ^* O) ?$ L4 S( p
let sum-money 0
8 T2 M( W9 a4 l6 cwhile[ i < people]
3 o, K* }7 t; X  y3 i* J0 o  g[7 g" A8 ^9 y, h- g7 f2 O
if( length (item i
4 ~" `- E! A0 H[trade-record-all] of customer) > 3 )
; D' g$ x+ s5 P" c( c
[8 p3 S- S3 E. v( v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ d8 s3 c3 H5 x& {% D7 |
]7 X& a+ k, D7 s, D( g" `
]
" O) }& @( ]4 D4 N- \' Ulet j 0
; m* V! K! W9 T  W- mlet note 0
& |8 y* j1 f. }6 m3 ?4 Uwhile[ j < people]
* ]" q; B( {  V: c2 N[
: a) c/ n( ?/ z. c1 Dif( length (item i5 P  o3 f+ A: c: G* ~; y3 z
[trade-record-all] of customer) > 3 )

7 Z' x/ B. B1 U9 f" x, {[3 ~$ ?; N! C) r8 f& B9 S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" n5 D6 T: v! r3 ^* X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; t) y' Z" |3 _$ b" m: i& ^7 ^2 s2 T) [[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" h6 {9 H/ n* a6 x4 r! z. m]
5 q$ [. p* Y( R- h3 e- q3 O]7 X0 W  U8 u; \. I; j
set global-proportion note7 q$ f5 C- Y. u3 I9 k
]; i, F- s2 T$ L8 C; ~9 }
end7 I) q3 ~8 M; S1 v

# H9 G  x4 _, _$ r2 ]to do-trade
. w$ }; Q$ n. u7 D2 U1 y  {;;
这个过程实际上是给双方作出评价的过程
" z8 D& E% F& i$ m; `/ g# }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 z! Y9 X! v, C. h2 m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 v( M9 \* S6 o; O8 l# p1 H
set trade-record-current lput(timer) trade-record-current
% ?1 S, J* |: u( e;;
评价时间+ r. a7 `% j2 B$ |! f* H
ask myself [
# z; D$ B5 c' i0 ?- K' Lupdate-local-reputation
) _1 h& D# @3 J/ P$ I% kset trade-record-current lput([local-reputation] of myself) trade-record-current
0 {0 G" M6 N6 F7 P0 X8 s]
# M1 K/ \9 ~. g" [1 c5 a4 e7 `set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 B3 r* M" ?' `% @& R/ V. F* m& ]3 p
;;
将此次交易的记录加入到trade-record-one/ m; s4 j7 \( e+ v
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ {. M$ p. y  T
let note (item 2 trade-record-current )
3 P3 m# \5 p  \1 W- \: e- Xset trade-record-current3 A! |& T; O& c/ H
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 n- X. T5 A. D* Cset trade-record-current" f: W' i' ^: b& k
(replace-item 3 trade-record-current note)6 |  l( W" {8 y* r5 |  e2 I
+ T1 n! R& n( v& z  p. e4 m

- F/ P  T. _" |  j6 mask customer [
) k1 K0 g% m6 g: a' D0 [1 m0 r; Nupdate-local-reputation. t- b& a+ G. Z2 y. x. L
set trade-record-current) S9 N- @1 e7 i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ Z! ]9 D9 m. V# h6 H$ X' |( _) f
]$ G3 Q0 |4 E  _+ l8 Y$ l) k: ?
$ x$ M; I" w8 p, O( ?/ Q$ I! ]
9 i# p1 x0 b5 D, S
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! Z* C3 f2 Q4 q. v/ A# h
8 l1 D& U6 w; e6 t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 S% b' r' V: J; |  J6 c9 f
;;
将此次交易的记录加入到customertrade-record-all8 g# w! j" z' y$ J: S: T0 z
end. `, }  R4 S3 T; U3 ^* t/ @

/ O% Q- c/ B. Jto update-local-reputation
  A! x* w0 p* gset [trade-record-one-len] of myself length [trade-record-one] of myself  N6 Y/ b/ }6 C

! g8 P+ g2 E2 U2 ~" s! K
( \/ K8 Z1 w& K;;if [trade-record-one-len] of myself > 3

/ V* \* M) T$ `( ?. l! lupdate-neighbor-total8 v1 ^: M9 E/ v8 ]' y
;;
更新邻居节点的数目,在此进行
8 W: J. ~3 V4 C; P2 @let i 32 P7 X: m0 w3 n% b5 \: ~" C4 N
let sum-time 0* K% l  W5 T# p: V. v$ f
while[i < [trade-record-one-len] of myself]
+ q2 }- k6 n5 d- `% E[/ @! ~$ k) N- y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( [  W: t7 i( {, c7 @# J8 J
set i
+ v8 A4 f& O8 e* D0 x( i + 1)

+ P# q8 ~) s% ]/ G# K]
( d+ [' t- H/ L9 r$ |; H9 T* Q; rlet j 3
% Z, n, T1 U  t' F- qlet sum-money 0) w: `; n9 q) t6 C
while[j < [trade-record-one-len] of myself]+ B. q! U  H6 b# c7 A2 j
[0 C$ ]9 o3 |0 U, Q
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( i# x) ^, v( y
set j
6 H9 _/ i8 x8 T- i( j + 1)

9 F4 h( \; }9 W0 P6 ^4 x]
& S8 z( k) U. C+ \& ulet k 3
( X  x9 i0 [2 K0 [let power 0
' h6 _1 T) ]4 D4 W! E& Wlet local 0' f" H% M; {- _* q) J) w
while [k <[trade-record-one-len] of myself]
% q9 `% r6 S0 k: n[0 x( g1 H; z0 s" z0 ?6 c+ A6 `
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) 3 ]/ K8 g1 w' i1 X
set k (k + 1)* ?' k7 f: O, o, Y+ P* `* h" j
]
( D5 J: R- I' a3 uset [local-reputation] of myself (local)" `: I* I) I& b# S( l6 w
end& z. w' i4 h% K- U* s

7 \. U" w% ~4 K4 h  W+ u* eto update-neighbor-total
& n$ S0 G4 B/ R& l! L% X; ]0 A/ @( e) S. A$ F/ Z& \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ p( Q8 w+ T+ v) }

6 H$ {# J% O4 W# ~4 e" ]

" G7 e$ a- {) ~' \9 @4 Y: d6 C  oend
6 T1 z9 t7 \% ?: C3 K
; w9 i" n' ^! l& t: Y. E: J$ ]to update-credibility-ijl
4 \3 @3 w" D% k/ q: J2 T  d2 e
) ^/ u/ l0 b6 x# ?& W; o4 @# };;
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。% S' X$ A1 X) Q. l2 x
let l 0/ K: p8 @: B5 i# o# B9 C7 E
while[ l < people ]9 F" {; O# ?6 R9 v4 b' U- }5 w" `
;;
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, X7 K5 ?% H  e
[
& s7 j) f; \' h! _! Slet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 Q. d* {. o5 J$ b. I( ^$ Q" `if (trade-record-one-j-l-len > 3)- H! N/ O" D" d) `
[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
- f9 _: D/ n  z4 |  q5 l/ Z* a$ Vlet i 3
8 L) k, B8 o/ clet sum-time 0
: v/ O3 G8 f* L9 K8 o) A9 [7 Owhile[i < trade-record-one-len]
' T" ^- h* [8 E[! w9 F' X. ]/ H. M6 h) c& B! c
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& J. q" ?7 x+ {set i- f. J" f7 `2 g" l- ?
( i + 1)

2 f6 T) h3 g9 Y8 O2 w]6 V1 A9 ^7 _, L; q4 R
let credibility-i-j-l 04 K% ]0 O; a( W
;;i
评价(jjl的评价)2 E& e- ^6 @! U- h
let j 37 C- h1 y! F* z
let k 44 {$ p5 f( A  P, T4 o0 R  `
while[j < trade-record-one-len]
) ^2 @  ?2 J  ?[
9 O& [7 d+ d) [7 U* V; a9 u/ M0 K, gwhile [((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+ |) a$ }3 G) x: P- E, L2 y" h) V
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)# t" g( {: B* k" k0 b- t8 R
set j) B7 R3 F( c: H. z/ f# o# B  {$ l9 X& n
( j + 1)
) y2 g: p) F, x: R5 S0 V4 ?
]: ?' C! e% \5 X: W
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 ))/ S* D, x" I5 e0 y1 J: P+ C

6 m: Z% H  b. N* L$ K; h9 d9 S

- U' A. Y# z. l2 u' r& i" A/ M& s& h4 Plet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))( H# d4 l+ ]* j: i6 Y) Q3 J
;;
及时更新il的评价质量的评价
5 F- b2 G" f- H, q2 U& s& W3 Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 c3 u- u6 U; I: J, s- j0 h4 g1 Wset l (l + 1)& n* k/ v! @2 K  u- F) ]3 h
]
+ `; G0 l9 e4 _  Jend3 M8 }0 q' q4 G' x) u* g

" v2 n* r, l2 o" ~- }: kto update-credibility-list
$ s9 V: Z6 M* }let i 0
. f: P$ `0 Q  d. dwhile[i < people]' {2 j* W5 B4 p; _
[
  Z1 y1 `* B* F( x- Q6 slet j 0: I. Z, Q2 a$ E% d  f
let note 06 Z* \- t/ m5 k6 e* Q
let k 0
9 z& W9 ?" k# B6 v$ h8 ?;;
计作出过评价的邻居节点的数目7 f' o, ^7 @4 ]7 ~# M* h6 v
while[j < people]. }' C( s0 X0 b6 q( I
[
& k/ z& B3 u- a) J$ zif (item j( [credibility] of turtle (i + 1)) != -1)4 P, j1 |% X" {7 L
;;
判断是否给本turtle的评价质量做出过评价的节点
+ [4 i0 |: g' s4 M" y, P9 }5 w$ d[set note (note + item j ([credibility]of turtle (i + 1)))
9 \' Z5 _$ B1 ]8 u2 t1 X;;*(exp (-(people - 2)))/(people - 2))]

1 \* m! V5 A  I# u. sset k (k + 1)
, g: i7 F! L) `9 Q& j( j( Q]  x+ Q9 T( Q& o5 A
set j (j + 1)
0 P% t! a0 e& t4 I' W]
* t( H& G9 r1 I: W- uset note (note *(exp (- (1 / k)))/ k)
! u9 Z, I1 A: ^  }! A* ^set credibility-list (replace-item i credibility-list note)/ U' j; I+ g" t% {: V% E" ]
set i (i + 1)
" N/ C$ u2 r+ u3 d' j- C# u2 D5 _]
% m# G7 k8 u# D, Z6 e& Z. x* Dend
8 G6 M. j! m, v
1 f) H+ t& ^1 R- x  V) _to update-global-reputation-list  o! i$ R3 K. ~3 B. B, E
let j 06 e- t* S# `8 ]7 E
while[j < people]) y  I+ q& R% ~5 A. g0 |: \
[
8 W8 ]& [. r0 h( H9 r& Z5 l6 D4 _let new 0
8 k! E9 h5 N  E( r;;
暂存新的一个全局声誉
0 D+ g2 V. ~) T3 @) olet i 0
$ M3 c* ?+ ]/ f2 X9 S5 dlet sum-money 0& S! p4 a2 i- L& G( \
let credibility-money 0" R6 Z* t- b$ o( Y% m( ?+ v+ D
while [i < people]
" j3 y/ w3 d+ W0 I[
# g4 |8 ?7 R; r" S. Uset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 z: O- i- V% M$ ]5 sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); r; b6 h/ f2 a( N- p$ U0 @
set i (i + 1)
) Y4 Z" I1 n( g6 O2 }9 R9 }]  \: |7 r9 r/ n5 a
let k 0/ L* N5 F; R) Y/ z6 z$ J! ~
let new1 02 d9 h: f5 f) l
while [k < people]
4 ]: @! b0 J5 `9 C$ c, U[% S! e. q* A: W6 [9 l; 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)
/ W: h& O5 Z! k0 `$ v& }set k (k + 1)9 C6 M; m! N, A4 o9 r- o3 }! N/ K& Q
]: G6 f7 g0 k) ^* x% c) g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 e% I0 R+ [( R( u$ U# D2 O+ Y
set global-reputation-list (replace-item j global-reputation-list new)
# t. V+ x  `; ^9 X' q6 sset j (j + 1)8 Z9 k( ^) G( y! U* O; V
]. Y8 K* y0 f( q! F: f
end8 I2 l9 W% J- U- u( c; Q
- L& m; W: B) V$ D/ V
+ |& ^, X# P( ]! M. x
5 m# Y3 l7 g( E  P, p1 p4 d7 O
to get-color  @1 e4 q" H' A7 C8 m5 f1 |0 G. d
9 u: Y. L( W% M; K% O$ ?
set color blue

* c1 q6 q' f& N  X$ f* i! \+ \end! Q9 i/ S. t8 P8 L
' }; Z& ?7 f' e: f& s
to poll-class0 E! d3 ^8 h% z; y0 W* l% k
end
! M" y1 s$ f, P- ~; l9 O' q. {: P) f
to setup-plot1
  p- |( a+ `0 y. i! t# F% u/ l7 S2 b: y, X3 m
set-current-plot "Trends-of-Local-reputation"
2 A/ r, W1 {  \$ O% u

4 j6 O# U* x8 U0 B: y( nset-plot-x-range 0 xmax

% J3 Z8 G+ C% v+ D2 N& y& u8 @" B( d7 O
set-plot-y-range 0.0 ymax

0 ^" p. U+ {( X7 Y: N8 F$ Hend( D1 ]' [( t$ N3 T

1 c2 P* R. g5 @: A' [to setup-plot2+ U& ]  c- y) Z# I0 ~: S

" Z* `1 k$ i; g# D1 [+ h5 {: eset-current-plot "Trends-of-global-reputation"

1 h; O7 o( m/ f; r& Y: ?; P9 T- o6 E
! x2 J! ~$ l/ Nset-plot-x-range 0 xmax

7 L& G% U0 t! v
! x9 b' ]- K6 t6 ?7 k/ cset-plot-y-range 0.0 ymax

( _/ I3 A; e& t/ V' fend/ }! z: E  w+ u/ p. w

- u4 E1 A" k( i5 a) z% d& Qto setup-plot3
& Q4 e: a- u/ M+ K  u
4 w4 C& @, Q2 Qset-current-plot "Trends-of-credibility"
- ^8 z* P7 Y# V7 Z9 i
9 p% H( v2 ~5 N
set-plot-x-range 0 xmax
6 ]+ ~+ l: B4 C# k( |1 Q

  o4 F- E7 x* z0 F- M5 K1 H9 nset-plot-y-range 0.0 ymax
* ~+ W/ m9 C3 A$ }$ C7 H; e; `# p
end
, c6 D6 Y% y5 ?! ~/ `
6 h& L# T% H9 oto do-plots
6 i; B$ E# F; n1 uset-current-plot "Trends-of-Local-reputation"
- o4 Q" m/ r( f( X9 Tset-current-plot-pen "Honest service"
, w$ u2 t: g& V5 \3 p, N4 _0 r; rend. f3 K( O3 z: r: k( P3 C+ l
* {# [" Y$ x  Q, a6 G
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.& M# j, b6 q% K" h* r; K8 Y  H
0 y% X) S  [/ }0 z. w' M4 `" 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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