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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:0 B  o. r7 N0 c6 S4 f" M
to do-business ' g0 ~( M  K9 U
rt random 360
3 F$ e1 R8 K* @# z fd 1
* [# z) X8 R4 [+ p ifelse(other turtles-here != nobody)[
0 I9 ~: C# X6 D0 Y, n/ N8 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.
+ X1 g* Y6 ~* }! E7 F8 j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 P" [( p, Y- f2 y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 V6 x) m3 u# N3 K2 S; J, J   set [trade-record-one-len] of self length [trade-record-one] of self- s" [3 }: l" H( A: Z3 t
   set trade-record-current( list (timer) (random money-upper-limit))! `. X; x+ c1 p+ P; O2 V

7 |# @8 o8 B; K问题的提示如下:
0 T6 h0 S% D6 W3 z6 Z
) l* [( l' N; Q: P* l& r4 Xerror while turtle 50 running OF in procedure DO-BUSINESS: J: Z& ~( K7 b: o: ?% P
  called by procedure GO0 ^6 Y+ D' p! p( f* N
OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 }0 H4 o1 h, s  Q% A
(halted running of go)) {* p/ U$ U/ d9 R# n0 ?! j

& F* H  q  B+ D. P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~~4 n* d5 L& X$ R& ?9 I" U7 v2 P
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
3 w) `% w! {( t& cglobals[
, |$ r7 k- x: i' t9 axmax+ x' ]( \* `! p( J5 ]
ymax
* M$ x- k0 Z. B% D1 W: ]5 ^global-reputation-list
+ l6 D* B6 ]( M8 ~. i) [% b0 Q, @, q+ V* _2 A& _) ^3 ?
;;
每一个turtle的全局声誉都存在此LIST" c( g7 E- t, ]0 K) _6 y
credibility-list9 J% a" U; F) i1 i. [# [4 G! L
;;
每一个turtle的评价可信度; _. I" O! R- t0 k% O  h: Y; u" X
honest-service; \$ P* M5 g" }$ p% n# ~
unhonest-service
' \  L: Y' J7 s  _  boscillation
" [4 t$ a' o& Q5 |6 Irand-dynamic
* l3 O8 L0 T; [# V& a]( n* O* ]' q$ S. O0 @2 w  B- ~; d

' r2 V" @/ H9 [  d0 _3 c* W" \turtles-own[
" o; d) e* u+ d$ Y' S  Otrade-record-all
1 A* [. s5 ~3 O% |;;a list of lists,
trade-record-one组成
1 K' d6 ]5 p8 z* ptrade-record-one
( r0 x2 T0 z( Y! {3 N4 F/ b' L;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. _; Q6 `5 [) k0 f6 z" w0 ~# G7 h. u

: C! x+ h2 p" e) k0 @( J# N" `: ~9 g1 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]]; O$ g: |4 ]2 b( t5 L- I
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]
1 T, p- {  Y9 ]* J+ Z( Lcredibility-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
/ A3 m9 L- m( Wneighbor-total
9 W9 k2 S& q* V. {4 Y* X* d3 H;;
记录该turtle的邻居节点的数目
# H5 N  a: J. H3 ~$ h! ~; J6 L) d" jtrade-time
) l+ G0 A& Y$ i* B$ |5 F;;
当前发生交易的turtle的交易时间
! Q8 b0 r. Z5 x& C7 {# |& `9 \appraise-give
1 y+ B  Q, m8 v3 L7 P% S;;
当前发生交易时给出的评价
5 R* V" u, t- X5 l# C8 E$ mappraise-receive
! n0 A2 j. G5 ]3 S1 z; k;;
当前发生交易时收到的评价# W7 |7 K* ]0 P9 o" I
appraise-time$ N1 G9 O5 `! f7 L2 M( X7 y
;;
当前发生交易时的评价时间
+ a% e' c/ w2 H7 Slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉. ?4 @7 l1 \' t7 y9 ]/ C6 D. e# h, h/ e
trade-times-total: J; |7 X% L; `8 d  ^( S) O
;;
与当前turtle的交易总次数' i# ]7 X, h' O7 @& O) A
trade-money-total, q- [! s( V, L9 v3 }1 U2 P6 u
;;
与当前turtle的交易总金额5 B7 C  y+ ]$ W
local-reputation/ S& k# c% P: x* h8 }, G
global-reputation5 g& \. A1 P8 a$ ?6 w
credibility
( y$ R# g$ h4 @1 q& v;;
评价可信度,每次交易后都需要更新/ @. g/ ^; i0 H2 {- H
credibility-all
: i( N5 y- }5 P/ u) G4 ~;;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  D6 [. b& T# e& v; a
  l# }( l4 `/ _- Z: b
;;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0.54 A1 K6 K0 [6 a1 b' q9 \, F9 l% c' B
credibility-one$ O5 ~+ B9 U' l  a+ Q6 T8 y
;;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people9 p0 ]& _9 m) U- m( {, t* i6 \
global-proportion0 g1 n2 D1 r( Y7 N
customer
$ s' z! M7 _$ B# p1 \& B- Icustomer-no1 Z+ O- s" B. W4 }! B
trust-ok
+ W# }/ q5 G, W+ ?trade-record-one-len;;trade-record-one的长度4 V* D1 r/ k$ ~) \/ V
]$ z3 B1 ~4 o. x9 I( t

- M; ]' [+ w1 B, u1 U;;setup procedure4 ?* t& [% P0 o( @4 t

" L; Y3 U- d8 Y1 d8 ?  mto setup
9 r* `2 _+ D+ J: Y0 {7 d0 ~6 t4 Q! F( V2 D
ca

& Q, X/ X5 O7 i8 Q5 i
- a6 O: A2 I: C8 }, Iinitialize-settings
7 z& H- \; [! {8 d$ L2 k$ P
9 N, `% Q. l+ d* x
crt people [setup-turtles]

& c, N0 M% r% k- J' ^" l. p0 T
3 R  ?7 w8 n& I" H  W3 \  z! kreset-timer
4 D: e& n* _1 z* h, s7 Z! ?
' Z4 M2 u" V9 I/ B" u3 T9 I# {
poll-class

9 P$ p" C/ x0 I7 a3 G! t1 X
) v0 [' W6 }! b: c) M: Y+ }setup-plots
/ [$ x  x4 H- B
! a$ p! E: L5 I+ m' N0 ^4 b6 \* Z
do-plots

8 Z# x4 k% k2 S' J; b/ K# bend
2 l& T2 F) {. |( v! E
7 [7 {) F8 E+ `' X" P- cto initialize-settings7 T# w% H# d% i8 l/ {* j5 V& E
& \! r  Q% M, [* |) X0 o( q' I
set global-reputation-list []
) x  i! A% Y2 G
$ E9 D$ T! h( B6 S3 w1 w. d% {
set credibility-list n-values people [0.5]
0 s+ Q- w* S/ j5 `, c4 r

# A' p! v" w# _0 {set honest-service 0

6 o- P6 E8 e4 W6 {2 D9 L. r3 x9 p. G% y' U8 y
set unhonest-service 0
( G* ]! k3 o7 j1 V( o$ {: f2 f

& U+ s( N$ |3 L; _5 D# kset oscillation 0
" u2 |1 r$ E/ L
$ H7 {* O; \8 _
set rand-dynamic 0
: a: E+ N! ~4 B1 J$ h4 u; I" q
end
3 C, {# P; u# \  c
$ M' Z, O  n' qto setup-turtles
4 `* v) D. A/ W/ Y8 }+ ^  Qset shape "person"
( s: R) t  Z1 o/ t1 ~setxy random-xcor random-ycor2 J4 v, p: F0 H( I! w0 r2 n) |
set trade-record-one []
  {* B+ H+ _  q0 M3 M

, k* V% Y$ e1 gset trade-record-all n-values people [(list (? + 1) 0 0)] ( b5 [+ @5 c# f
  S# Z# |0 s* j- ]$ ]/ v
set trade-record-current []
1 Z5 g/ H2 w9 S# C* Mset credibility-receive []
6 G2 x  L0 I' x0 U* h+ Pset local-reputation 0.5
1 U0 j$ Z/ ^0 e% Rset neighbor-total 0
  U# S% C7 _+ f$ @+ C: t$ u- p8 Dset trade-times-total 0
2 O3 ^' ^& f6 N/ O. ?: }  eset trade-money-total 0
$ g4 a1 T6 ~  t2 B' R' Aset customer nobody
3 z: a4 j( e; o5 s  o, n0 m; Dset credibility-all n-values people [creat-credibility]! V5 \" \- k9 k! |8 C" Y/ @+ X0 n" {1 a
set credibility n-values people [-1]
5 R$ e( p+ M6 Sget-color# B7 o1 P% f- U  r* t, Q

2 V0 h5 ?8 W1 B8 Q5 u/ p# hend
2 @( H  m/ q: K
2 q% \, j, X+ l+ |* ]7 E5 z- eto-report creat-credibility
$ _- x. o+ V  Z4 X- yreport n-values people [0.5]0 W0 r. z; ?4 l3 k
end
. ~) d/ T8 O3 `9 |: I) c' B( O; U% R5 y# ~% V2 }* C$ G  I
to setup-plots+ h* i& M$ o# G9 [

4 _3 z  ?- r! O# R+ |/ dset xmax 30

% g, ]' o* b- w1 d; ^
! _; w7 W  K0 I4 l& c7 a; [set ymax 1.0

. z' l* C6 b2 K1 t8 T  Y
1 ~1 N$ T" r1 L+ G: n  b9 lclear-all-plots
* I  T" A" |5 p9 N6 Q

; L8 w+ f8 C7 a$ j0 x* Isetup-plot1
' E) u( N+ @" A
) |5 Q$ L4 C/ t7 S! M; {1 T
setup-plot2

$ z1 K, D3 w4 l* E4 Y2 W
5 `3 j$ _1 I# e8 Vsetup-plot3

  T+ B- K/ e$ U# y* p7 @3 hend
, p8 V" Z  N2 r( O( a# {- }0 x3 ]% E; J: ~; W/ r, n/ A0 r5 T8 t
;;run time procedures
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to go# s* h' W( d8 a$ V" E  z# G
" c7 {6 R# G0 g7 d
ask turtles [do-business]
& i) Y4 {1 l4 h, A
end2 _$ F- y7 X; |+ Y* R+ z
% v7 f7 \: \: [: m
to do-business
$ I0 C" p' E3 P0 I' L2 d$ d
6 |" }/ b3 [. k; Y, Y% x& ]+ x" A; @: I

8 D4 W, n7 G( h. ^8 i( Y# n0 prt random 360

& W2 A  i( Z* v0 u
' I& {( X3 b: _: A7 U& ffd 1
2 J  E  b7 Z6 {$ M2 U" T! a0 \( M; s

" u6 H  o5 U- K" Q+ o% ^0 }4 yifelse(other turtles-here != nobody)[

0 S/ W' Y+ J/ p; f
7 m' u% O! @. U0 Dset customer one-of other turtles-here
* a  K1 c1 B7 t7 J. G& {4 x3 ?' g
2 K9 k6 B: a  w* i4 K- ^& n- L, Z& ^
;; set [customer] of customer myself
9 X# P* C% L. M: ]9 ]4 k( X
2 r! N/ m! F6 _& k
set [trade-record-one] of self item (([who] of customer) - 1)" T; q; T! }( S+ v% |0 v
[trade-record-all]of self6 l9 q+ s2 G0 X$ U0 _9 B' u5 b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 z% Y& K! q+ C1 c* x' P9 }. @+ s# g& @  z3 |
set [trade-record-one] of customer item (([who] of self) - 1)( P8 H4 v# k& g( `& C
[trade-record-all]of customer

/ r4 S. m! M: u7 I/ e+ P# m9 j1 P( X8 a5 |. x' \: U
set [trade-record-one-len] of self length [trade-record-one] of self
' O6 c/ J$ y* N7 j
& A5 O: G# J7 ^: V* h% t/ P
set trade-record-current( list (timer) (random money-upper-limit))

  @+ S7 B" I! h. f; ?  r4 x/ R" U
% p/ P' d' W2 Z, I& E. X' Eask self [do-trust]
; N" t2 L+ I1 a) J, D1 f& ?  \: w;;
先求ij的信任度$ ?& @2 P8 T3 i
6 s% s9 k' ]8 {  n1 h
if ([trust-ok] of self)/ B: ]" x* B  ?" u% n. n+ `) X
;;
根据ij的信任度来决定是否与j进行交易[( c$ }" }+ O4 |, v) l
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# \2 F7 k* }. S1 t+ V" j( S. v
& J7 C9 r3 b3 T9 G1 p[

7 c+ Y# f; o( P5 k. F% V0 b5 @
$ z3 r8 C/ g3 O* v8 {do-trade
( m4 Z9 A2 v' p

7 ]2 U0 p; e! }& I: b) Q7 jupdate-credibility-ijl
1 x- G1 `1 g: I: P* y, b! L& U/ x

$ i! b: @' J# {update-credibility-list
/ E/ Y3 Q6 h6 }. V+ b5 n
" h( \. p2 b8 d, `) z: F, X9 t4 p0 b
6 I  C# P/ ]* r$ L9 _
update-global-reputation-list

& V! Q1 H# e! z4 W. U: M- F; b& |3 I8 Y% [7 L' i
poll-class

+ \2 `; Q4 _7 |0 R# i: T' B+ }6 O7 s! G7 g
get-color
8 }6 f0 Y. Q- V% r

0 c. b. \1 o1 T, M9 r]]
4 p; q- b/ U6 o$ @4 T$ U# M9 l, z% e1 u9 S8 U* P# F3 S; h! U5 P" T% B
;;
如果所得的信任度满足条件,则进行交易, m7 {9 K8 Y# Q. W) }

4 _0 Y0 X% o7 x- P, i[
. z! j% m, y! c7 Z7 z# I  J& Z9 h! u

. J7 B; @0 R; Q" v2 H  vrt random 360

" }+ N5 c8 T$ _( d
5 e2 |) R' J3 d5 w5 Z/ R. sfd 1

. p# F0 _/ T1 D: m: X! E5 P  _: L: v  I& \$ B5 u" y( E4 P" w
]

3 M  R: Q  a" p! S2 M, l. h0 `4 V) A9 }8 Z
end
# P8 T5 ^7 Q% V
7 J& J. Q% D) P
to do-trust
$ H9 M( V# y/ m" _9 W- g7 |; f8 Y6 \4 Rset trust-ok False* g; I* ]+ J1 N5 b3 g- }* Y

0 p+ l$ F; P) R
0 s# @1 q) T# c( Q* n' s5 d
let max-trade-times 0
9 H" s5 g3 _$ Z& b* ^* iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]* r: t+ y2 u! {9 t9 L: |7 d
let max-trade-money 0
0 T. u9 r! B" U- z" b/ sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* g% \' l3 o: i4 ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
( y: N, c4 F$ E: W# A6 w" }' r! z$ _7 L

. \# i3 C: y- M( F: _  `) yget-global-proportion
0 |( @! t! G# mlet trust-value
2 v# n0 S* Y2 B4 U1 elocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

0 @1 t. L/ f5 H) w. n& ~if(trust-value > trade-trust-value)4 x' Z6 x$ z9 }* O4 z) z. y
[set trust-ok true]9 u$ O; T+ Y1 l
end9 t8 P+ {; [* O! A  [  X+ l9 C

+ z( y) L; x3 f: cto get-global-proportion% f, i* ~  X/ k, b7 R3 Z3 a6 E, ]0 ?
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  S) i; @2 O8 @. D' g6 B8 ^8 n" [[set global-proportion 0]
' M" l) g0 a" n& N4 R) J! O[let i 0: a9 y) H5 D  X' R4 o. W+ w6 L2 z; J& |
let sum-money 0
, C9 L( I  R6 |$ L3 J) u9 r2 z8 lwhile[ i < people]
7 u4 g% o% {$ t: T; c% I( w/ V[
! d$ y0 R' q" s. X/ uif( length (item i
$ b' d; d# |5 x" Z' M6 |/ y9 {[trade-record-all] of customer) > 3 )
4 E8 |4 P) ]8 i/ u5 J
[" A' B2 t' I6 G1 i. G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 S+ ~) w' [+ b]+ h$ E- i* w1 K4 W) u
]& s" h# t0 [, l/ V# }
let j 07 m4 B1 C" q2 [1 @. D4 m+ R
let note 0: G& |) o: J" _# W0 h. C$ f
while[ j < people]+ E: Q- S! ]0 c
[( F8 _* c3 a0 b& l
if( length (item i& U, p$ v+ `: x/ a" @4 O. J& r
[trade-record-all] of customer) > 3 )

( M/ @9 D2 E0 U7 z. S4 N[6 P# n6 i6 b4 M: h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 m, ^7 H, t6 T( C* k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
/ u0 D; F: G# ?. \3 @) P[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" P5 ^( E& S/ H% d6 o& Q9 C9 s
]5 F1 }$ f- d! Z% ^* ^) m
]
7 r4 F8 |  a$ O) D( q) \1 n% Pset global-proportion note
2 J' {1 p! ?* |8 n, m# O]
7 ], v+ Z* p- @end
- m8 d, ^& m1 I* x/ M! T( `* l9 [1 c
to do-trade
8 m& F0 M  J( n# a5 e;;
这个过程实际上是给双方作出评价的过程7 `0 M- M0 G+ m2 f' j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" D5 ]3 V& h; {5 |) o+ g7 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 o) N& O( [" b; U! m3 h* hset trade-record-current lput(timer) trade-record-current7 M* ~7 N" ?$ F( A3 `& P9 Q( j
;;
评价时间
6 I) d* O$ g1 mask myself [& U- [" b; ]9 A. Z0 e0 i! `2 Q
update-local-reputation# |. ~2 \& h5 Y$ [3 n. W( |. X7 {) q
set trade-record-current lput([local-reputation] of myself) trade-record-current
$ `9 ~, e5 Z7 m/ ?/ D8 h]
9 k- s& z! a+ t. {) i  lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  Y# F; d' B$ [( _$ Q  u% V8 H7 S
;;
将此次交易的记录加入到trade-record-one3 `5 N& w4 J; @6 A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). g) j% q% i1 I9 }
let note (item 2 trade-record-current )' r9 D& A  V% _# u: T1 @
set trade-record-current- U, I4 m: ^: X" n# E
(replace-item 2 trade-record-current (item 3 trade-record-current))

% Y4 J3 A- E% y2 f. B' X# f( @8 Pset trade-record-current
6 H* d& S8 P( o2 n7 o$ H9 f(replace-item 3 trade-record-current note)
" E( s2 \' C- L# V
' z0 r! M! r* C3 Y% I5 I& \. u

, d- \# [, X( iask customer [
" g! Z& L6 n) m/ `9 q, @2 S5 I" O2 ~update-local-reputation' O% o1 [0 W, W% Y2 M7 O, J9 p
set trade-record-current9 ^4 `7 |3 ^6 O$ B2 C5 c; L1 u
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% |8 _6 I* T9 \+ ~
]- T  P1 G, v" E0 d

% }. V& ?/ n% _1 y: q( I) Q' x

& z1 B2 G  i' Y3 Y/ K" w1 ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" S& h. f$ Q1 Q" r: O# Q! h
$ Q* M/ r& t! b8 M) k% N
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) G' m, G& p) i2 }' O( F% A$ M
;;
将此次交易的记录加入到customertrade-record-all
& I9 \( V7 d; |: J: Aend
& u& S! z8 o! h5 d8 d, h9 d* L+ Y8 c: V; W& Z( U7 l
to update-local-reputation8 \& J% O  V4 W, B. r6 T
set [trade-record-one-len] of myself length [trade-record-one] of myself
/ C1 u- G5 b, |+ j; O. R
0 K7 R" @* k; k4 q1 ~8 \+ G
/ m: f, D) S/ J1 Q; X8 C8 j5 t;;if [trade-record-one-len] of myself > 3
3 L+ U8 f4 G. I
update-neighbor-total3 V' N$ L; D" c' G
;;
更新邻居节点的数目,在此进行  a9 [' @5 D% O8 H3 x; W
let i 3% z# N- W, M1 n0 U: ~$ r* K/ F
let sum-time 0
# l( {4 ]% o- y" `& ~, lwhile[i < [trade-record-one-len] of myself]! {$ U8 r: @; ]" y( K* k. ]6 g
[5 X% W) _" |6 A2 v) Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  y1 m! ], K5 P3 {: e/ ~
set i8 W6 ^! E5 H, V1 S8 ?# k2 H
( i + 1)
2 V% {, W2 j! W4 k3 O' }
]/ C; O- N& U  p, z1 ?% I( [
let j 35 W  f  |( {# f
let sum-money 0
+ `6 p5 h8 c5 c8 i- R1 N' I4 T* Y& Twhile[j < [trade-record-one-len] of myself]
, a# m; O$ z; D0 {+ F: H+ C1 j[; @! }1 F+ u. I, `6 J, W; v
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)+ v1 w! l! r' `
set j
( A9 f, r% o$ E8 q! f( j + 1)
3 R0 p; W( O9 B0 E
]( e6 t3 d, {/ w+ l- J) g  l
let k 3
: B& p) A' F6 c2 n3 _let power 0% X1 n: ?; J! q/ Q
let local 0
0 q4 n  F2 q2 g" g8 fwhile [k <[trade-record-one-len] of myself], i! J# h6 Y2 _+ i9 u
[3 ^5 R, V# Z" V% p1 m9 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) / Z0 u. Y; t3 y3 k
set k (k + 1)
( @. W  R' s$ c' Q]! h  s' Z/ s, f
set [local-reputation] of myself (local)  t, ]0 `! l6 g8 W
end
4 ]6 |6 H0 B7 o6 A0 @3 ~
. d9 E2 _4 q0 l- f! Q- m' i2 u4 Oto update-neighbor-total
" O0 q' u  Q6 H: [1 n9 j$ D# R2 D  m( R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 p) V* `1 d  ?$ h- E% g  o, Z, N/ o! A+ L
5 W4 f4 _. c0 l/ Y% u! ^. o4 Z& T7 i& \
end
7 X0 B1 g5 M% S. m, E9 c+ Q# W) X) D' r. O% n
to update-credibility-ijl + w. q. w( |, g3 z
3 C- k' d# g3 a1 ~& j0 }, n
;;
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。" N: I6 d0 O% Z: N" V6 r) i
let l 0
) @( {; }( o% w( J/ bwhile[ l < people ]
6 N! T: \2 A5 S+ E0 H! s; ^* ~;;
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
% B% b& z; B* u8 F: A" N  Q8 v+ r9 Z[' p- N) g* N6 O: W# y" ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 d) [1 t, b2 @. v1 E* O4 f5 Z
if (trade-record-one-j-l-len > 3)
0 U0 e. v, Q0 N: d* e9 f8 k* _[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) d# W7 K: s; b9 ~0 I5 |% Y; R
let i 3' N& d* `1 o/ {: D4 e
let sum-time 0# w+ H) z1 @0 z4 Q7 m
while[i < trade-record-one-len]7 E  x# w, {7 d2 c' g5 Z- [% X
[
6 d; y* v3 m$ o& W, a8 k' Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ g# W6 ^+ r* V2 Qset i/ N( {2 a" V; Y8 D( p9 d+ D
( i + 1)
- n9 [) |; }- [/ @$ y
]  e2 ~- h0 Z4 \& p6 w
let credibility-i-j-l 0" m$ {! k& t) `+ V! o
;;i
评价(jjl的评价)
+ U; j' s8 g3 h: _' m; d3 q, dlet j 3) T( V9 X. J, c3 V
let k 4
1 y& O/ d$ N. g2 g1 q6 H7 ]* ]& b0 }while[j < trade-record-one-len]
8 |3 J9 O+ {9 ~. R& ][
  X7 p$ d! \% Uwhile [((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
9 F- o$ ]3 B5 Q9 P8 Fset 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)- c$ {5 i% V& i( {
set j  @) ~5 G3 ]$ ~4 a' w& {
( j + 1)

$ z1 A) ]4 Q* \, g]
, d1 w; D- f+ {5 uset [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 ))5 D7 K6 x. w3 v

$ c; m2 h; w0 {* z5 t' M5 T) |

' `) A: C. Y9 x4 b- k, `, ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! d& k* ^( K+ F9 I  Q
;;
及时更新il的评价质量的评价  q9 R2 k( ?) w0 o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# S2 @& C2 r: X# x5 k0 |9 v
set l (l + 1)0 r# G/ i9 e1 }0 [' V: m, w6 @
]
! H9 s. s7 y  \end
5 K7 `9 _& Y* C- l& G% e% M1 b  y
to update-credibility-list6 Q' m0 d: z; T% q4 f5 f
let i 0+ M" k( c5 [' ^% O9 Y
while[i < people]
6 \3 _+ y3 A/ }7 I7 \1 x1 w[
( l% H: y3 a, C3 flet j 0
. R8 |) _* B( |) c6 m9 k4 q2 i4 \let note 08 }* T! r( [- q% }! j4 b
let k 0
# y+ F! U' k! R% j/ {- X7 e;;
计作出过评价的邻居节点的数目7 M/ D2 s1 O- }. c  |- T% i
while[j < people]
4 f6 K" Q( p( F( T[9 @9 x8 b8 v* C2 g9 [9 m
if (item j( [credibility] of turtle (i + 1)) != -1)
* ^8 O& C/ B& Z9 v2 P' S1 r% e# @+ U;;
判断是否给本turtle的评价质量做出过评价的节点
% [& W! w2 T( g[set note (note + item j ([credibility]of turtle (i + 1)))
# \' L2 K! l0 x1 h% B7 y;;*(exp (-(people - 2)))/(people - 2))]

5 A, t9 @2 B/ _" Cset k (k + 1)
3 D8 T- C3 v  X3 y]' U  o* e/ a+ z, q
set j (j + 1), H' N( x. l+ E. N6 j1 Z3 c  `
]- _, I6 r* h2 t0 Z5 {' h$ r
set note (note *(exp (- (1 / k)))/ k)9 J" w; V& u; d
set credibility-list (replace-item i credibility-list note)
; s; T2 Z1 O" b& j1 Hset i (i + 1)
+ l7 L. a/ u* b$ k4 C* L$ t]
5 }2 Y& _6 ?6 |; j7 h( pend) B! y3 W0 s- e8 E" _# z  c

; s( V5 f9 c+ f1 x) W, H3 o" {to update-global-reputation-list4 v% ?7 |! z1 k" s2 V
let j 01 D" C0 ~) k7 t) ?
while[j < people]
7 J/ a' F. r9 \4 C; y[- t1 @/ |7 E# s% F9 s
let new 0
( m) ^% h+ _8 P/ a* ^8 F; f' o;;
暂存新的一个全局声誉8 a: y. E6 O- D& ~. s0 {
let i 0! k5 }  A) Z9 l# E8 i3 d
let sum-money 0
( `; v# b$ r; Z6 qlet credibility-money 0
6 e3 S. ^9 m. x7 v. `while [i < people]! j5 E; m( v; @0 }7 g
[. ]: I6 `4 u' P7 L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: F8 f2 X1 |, e1 k7 |3 O' Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' y" {) W% w! g+ a: p) O
set i (i + 1)0 X' H2 R/ x8 @6 A
]
3 R  v, h! _; K3 E. d0 Q5 u2 Tlet k 09 N$ j" D/ Z0 x0 {) n
let new1 0
  ^+ R- I/ v6 n7 m$ m, E# xwhile [k < people]7 d# g5 }3 f5 R0 ~1 b
[6 a$ I. ?( e. n+ m* W5 k- Y/ B1 ]) c
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)
$ {: ^; B2 T/ @  F' N5 ^set k (k + 1); y) Z% t6 k% m+ q5 ~. f) C
]! P2 {7 @. p9 ]( z( o* L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ t1 C$ Y6 S5 g
set global-reputation-list (replace-item j global-reputation-list new)& P- L. d$ c! h( ~
set j (j + 1)
( m- \" d8 u0 t% W. g  d% k! D) B9 |]
0 {6 H* i% K% Oend
, w; x# D) X; |4 W6 ^+ F' O$ _/ k, f) ^: n% \
6 Y; B* J; O& w* M) g  X7 }1 l
- S& S" K1 G- y+ d1 D
to get-color" Z! s9 b2 n! t7 t5 j4 D
/ g& E9 J0 J" g3 G, h, s. C# Y
set color blue
: {- c0 L3 t9 W$ E+ L
end
0 a0 L" D0 u+ \4 B% d" v' t. G% x" `# E6 D) p8 l
to poll-class7 V9 Z& e+ |! b
end+ ]1 G+ S2 H# V$ b: j# s

$ x2 [0 Z0 d- ato setup-plot1
/ u4 i8 z; r* a' p& T* B) \9 r8 S9 a' t1 l; `; F
set-current-plot "Trends-of-Local-reputation"

3 M4 L$ o. b0 T; }0 V8 E; P- O
$ N0 b$ m1 Y0 m; R9 M/ k2 C. b  G5 Eset-plot-x-range 0 xmax

/ s1 Q. y* d7 I' H5 b, F, u
+ ?8 M* K7 y0 I9 U3 [% iset-plot-y-range 0.0 ymax
7 H  s, R3 j, [  b
end
, H: F; D' n% m* A% \/ r  }: s) x6 Y' S% w+ P" T" u
to setup-plot2
( C" ~7 w' v! T; Q2 q4 s8 S! \) c
2 p& e, I! ~3 g+ j! Rset-current-plot "Trends-of-global-reputation"
; a" z( g1 M9 k7 f9 [
* x7 y; z5 _3 n8 k
set-plot-x-range 0 xmax

* a$ C9 P; L/ P' C+ ^% M9 u
5 p& Y: D1 `- G0 r+ f/ q' mset-plot-y-range 0.0 ymax
' j5 T" M6 r$ J  k) m
end
+ s" h. [! A  l4 P8 B0 O$ f: S7 K; @* S  r4 C
to setup-plot3
" R8 |5 r8 c2 S" l: [8 i/ z. R, l% p* m% j+ [6 x
set-current-plot "Trends-of-credibility"
* D- ^* q" P6 a9 n, z6 x) k

' g, T0 S7 O1 b$ j) X5 @; zset-plot-x-range 0 xmax
: o; a; ?+ G' P1 w; T) F
( Q' c- m1 s2 i  H: U! L* p- @. y
set-plot-y-range 0.0 ymax

8 O  I1 x0 Y, _1 V/ u6 zend
; m6 A/ u/ U8 V, U$ K# \) F9 d- R; T' Y
to do-plots
, M: a  @" Y5 ~5 uset-current-plot "Trends-of-Local-reputation"
1 K/ }& s' x3 s* A' }- B2 c. jset-current-plot-pen "Honest service"
9 R; o: B& f7 J; V6 u" h  Hend
- O) G) ]& P9 A+ d4 O, h
0 d2 Q! t$ |) h+ g1 Q[ 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.
4 Y% o' t* d! C9 L
( y" N( O% f* ~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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