设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 10779|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
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:7 B) m3 o5 y( v4 v5 j' c8 p: b
to do-business 6 f9 T2 U, J1 |* P! V
rt random 360& d6 F' X( Q' N* E; ^2 W' N
fd 1
7 I5 R, @$ O3 s0 J* y ifelse(other turtles-here != nobody)[
! Y1 F+ C& B" J5 @% G2 M4 N: ^   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.
: ~  i7 a4 y& p/ d4 C% H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( U& y8 m3 b# p* _, x  ~
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  l# q" C& R1 Y& B, g' J* v! B   set [trade-record-one-len] of self length [trade-record-one] of self/ a: }5 P) e) J
   set trade-record-current( list (timer) (random money-upper-limit))
9 ^" \0 L1 w( J( \4 E0 ^; A+ ^5 t/ m8 ~' P4 G' D: O, R; R5 @
问题的提示如下:8 c* z2 J7 [, b" ]1 N6 x, b0 y& k/ {

( n4 |( ^$ h$ Xerror while turtle 50 running OF in procedure DO-BUSINESS8 ~8 y& n' f% B3 T
  called by procedure GO- O% q% u- J2 D( F( B# A4 d$ Y! P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 u9 }/ r% P8 Q' L( ~) @4 l- H
(halted running of go)! Q5 t% v0 h/ a( ~1 o; b

" f" P* G4 ?5 W* \0 l" y9 o/ E0 G. @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~~
# Y; `6 a; p! ?! _6 |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.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

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  r2 v+ @5 L) d+ ]; ?% \+ y
globals[
2 m5 k8 a; N, U1 \8 _" axmax" g% }# I" V2 _$ _: o& j) m
ymax: P' d3 P2 b. n
global-reputation-list
  k  V( w9 ?1 f9 W9 a2 Z  e% J- |2 l" _2 |' k# A0 U
;;
每一个turtle的全局声誉都存在此LIST
- O( \/ _) m/ M0 F5 x4 W/ P4 `/ ecredibility-list/ Y" V9 n' B2 L. B5 p% Y
;;
每一个turtle的评价可信度
, C  i1 A: Q2 I6 X5 t7 o/ Phonest-service
4 _' M+ x8 e! y% e" J1 I/ punhonest-service! {$ g- P5 E* n
oscillation
# O& a# a; P% A7 l  D# Z  Y  grand-dynamic
) e+ g% r8 `* Z6 L]
# m0 M2 N5 n5 s* [/ [- A% N1 w
4 G- _- @' y0 ~9 R8 @2 gturtles-own[
( D% H( \7 o- Q9 e8 Z7 Z2 Dtrade-record-all
* [+ ]: I$ P$ I4 o3 _. W& ]. a$ X;;a list of lists,
trade-record-one组成
# `; N6 b; h8 v* v/ V( ^trade-record-one4 t) L- `# Y% W+ w; y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" D, r$ S( ?1 {8 q2 l7 H5 j
" B4 y+ Z; U& W" f( G6 c9 L* `' g;;[
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]]0 {0 j: M8 }4 H; D, o
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]
* I6 w. E# x) J! N# P5 ^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list7 T* A7 y8 ~- `* \7 Z. Q7 V
neighbor-total& b9 J2 l/ d8 [2 \- X: j9 C0 P( z
;;
记录该turtle的邻居节点的数目" p1 B/ K, m) U* D: {! I. \
trade-time
( ], B9 G- }$ m7 f# x;;
当前发生交易的turtle的交易时间
1 a  H7 M4 w6 D3 ~: [, E) p$ tappraise-give
6 \) u1 }. C, s+ a5 |6 Y;;
当前发生交易时给出的评价
7 @/ q: R1 c7 W* Q% p, Rappraise-receive( p  p+ y! N0 C7 C  A) W
;;
当前发生交易时收到的评价
1 X, a8 g) c$ D' oappraise-time
; ?+ X9 j0 H. n& I0 x6 ~8 _! n;;
当前发生交易时的评价时间( s9 ~3 z' o, B  G" |! `  x& b- B
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 h- [, m$ M0 K2 N/ P7 c' I' Jtrade-times-total& X) m; l3 p" B/ \+ `: S0 k6 G7 {
;;
与当前turtle的交易总次数; m) S* K5 ^6 t& w* h1 y# p
trade-money-total
$ O* `5 b  N- O  Q  v;;
与当前turtle的交易总金额2 s; j1 @$ e- z
local-reputation
( w/ I$ |9 I  h7 x! [global-reputation
+ `: L* H4 Q" r. l& }& F! x7 n0 ycredibility
# ^' h3 ?6 r" O& o$ Q0 o4 ~;;
评价可信度,每次交易后都需要更新* a9 E% r4 K5 o8 `6 M; \
credibility-all- L9 A% g$ V: P1 c7 Z% C! \/ K6 k  B
;;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# t7 {' ]% [; ]( v" e1 j
& I7 i. g  a# u9 _5 w$ J* _) K% u2 l" 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
9 ?4 j: _8 Y3 u2 acredibility-one
+ Q' N2 G2 `; n# w  K7 S;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
. g3 q7 g7 R9 r0 ]& Bglobal-proportion: E* X3 U+ I: t- U5 l2 Z/ F
customer
: Z; ?/ v. \& hcustomer-no" G2 ~4 X( f4 s
trust-ok. {" r7 ]. G% v# x
trade-record-one-len;;trade-record-one的长度
! q9 z. p7 Z& A- Z  a2 g" u8 @]- U9 ]6 B7 l( ~5 n, I2 h
, r; d" x! T/ \1 P# J
;;setup procedure& K: ]* M) f5 ~& C7 [# l
0 x& P  v1 x4 _# v
to setup
5 ^& N5 v& @# S+ r& Q) a) m# O
" D7 I0 {7 C( @- b5 E1 Qca

5 e. `4 C" D) q6 ?
$ D9 G$ d% V. e, [! F" finitialize-settings

# A; z. |$ Y* D$ Y+ I7 P
' j$ n. c/ k# G2 Bcrt people [setup-turtles]
) x$ X0 R9 k* Q9 h

2 d; K8 u, }* y8 V: x3 n/ |reset-timer

4 X: d# c  e" ]6 ^% t( F
5 t7 ~6 ?( b, \: H/ x" ?+ x/ kpoll-class

& [* o, n9 ^3 B! Y5 l! \9 v
! Y8 o( ^/ O7 x5 msetup-plots
2 ?" Y( l/ f6 }( S. Q, a; h
4 G: T6 L# i# `4 w% C' [7 V
do-plots
" w: S5 E& n, Y9 R( {5 B0 ~
end
$ Z. S4 z8 b- O* ]+ O5 G5 [7 F4 V% f
to initialize-settings
1 b3 u; B1 y% Z" M' k8 N. Y. m
, o! N6 t- J2 {7 ]9 Y7 I0 K- qset global-reputation-list []
4 \' b- N' j& U. }
  a0 n) D+ u+ @$ N% h! [
set credibility-list n-values people [0.5]

5 U: a' [1 r4 E9 e6 ]: J
8 O: S4 D6 q1 C+ cset honest-service 0

% T: `. ^8 L" I+ D, e& n# P- l; r- m
set unhonest-service 0

# ^& U( t: `! o4 t. }" z! Z) J1 h2 l& E) O
set oscillation 0
$ _( t6 {1 g1 G0 z5 G' Z; y
3 z8 ]* v$ h  O6 R3 I6 t, U
set rand-dynamic 0

4 K# r  z6 ?* a# ?5 tend
: M! i. f& F; d" b$ Q. J% L" M$ `: k8 M
to setup-turtles ! ^/ X* C8 J6 }  L4 f
set shape "person"
4 N$ i# M9 y8 C$ t9 T7 j' H7 Asetxy random-xcor random-ycor0 p) T, E2 G& t6 G
set trade-record-one []- }( t. W) D/ D/ W7 Z/ N- E3 B

* o4 s& C: ^8 N7 Zset trade-record-all n-values people [(list (? + 1) 0 0)] / E: T7 s3 |* u: k% |2 h

8 t6 Y9 w3 o- _# lset trade-record-current []# K$ q( l) P  I3 b
set credibility-receive []
$ V, f7 d& j. I* H4 nset local-reputation 0.5# w! a9 O: |2 j2 t5 u9 Y3 u  Q# \
set neighbor-total 0
4 T5 u$ ~2 c/ [# `set trade-times-total 0
3 j6 [" o8 U9 @) ?set trade-money-total 0, A( M9 r4 t. F, K- Q8 r' M
set customer nobody3 m$ R9 z+ K; b
set credibility-all n-values people [creat-credibility]
/ j: C7 N9 l8 o% @  b( C# rset credibility n-values people [-1]
; o5 s: v3 L' }get-color
$ E5 B$ k1 _( Y( n: V" w
0 ^& b2 |2 H4 z. M7 e7 p. a
end) k. O/ J) }; u. |
$ ^: |  }- P7 H0 ^2 F- \; I
to-report creat-credibility
( L0 n% o9 k( _9 q. Creport n-values people [0.5]% H/ q3 U# t# Z
end
4 `! N6 J/ U# ]$ r& a, C/ K  T  ?$ y& ?: Y$ j
to setup-plots+ e2 O" t0 v) `( Y3 v9 z! _* P* V  V% ~
/ }/ S9 i" L. b8 j
set xmax 30

9 U1 l) C3 z- ?" `( A( C% |2 N3 a. W6 H5 X5 m; ]3 R
set ymax 1.0
' J# u" c# a2 N6 f& j8 {

. I+ n1 m: j, I4 K( @: g1 Tclear-all-plots
' ?! }* a- Z* h2 T" o9 Q- v  s$ l

5 w( h! e* g# z$ B8 r* fsetup-plot1

3 A' d1 Q8 O4 G" ], Z! T9 u# Q$ p$ a# x" T$ d: Q  F+ f+ [) i
setup-plot2

$ Q* W2 C' {! ~. B1 s3 K; v/ k1 u
setup-plot3

$ j* y6 u# I. v7 K- j7 V, m' wend
7 J0 c6 x# W7 `) n4 N7 ?. t) q# h  d6 X+ g% d) q
;;run time procedures( R& ~& m+ g0 `0 i5 c; ^$ e* }

% V- I' T! b+ Nto go! Y. V; J2 l8 j; h4 v+ n$ Z

/ \5 T( a7 _0 Mask turtles [do-business]
- K2 v* q- Y* i* P. H8 R$ X
end* a  E* u/ }" w! X4 c4 R* Z

+ K9 Q, w( R/ v  j4 {" [1 S$ i/ A5 cto do-business
" o6 B2 h. R! p5 U+ T9 P

3 c/ p6 g+ m% V- U  H& W/ I# _2 J5 k9 u
rt random 360

' D/ B+ t4 q0 u
& D: I# B6 k( R2 E: Cfd 1

+ A; o% I7 M) N# r9 w# x3 V6 i$ x5 v% m9 o/ U
ifelse(other turtles-here != nobody)[
8 {6 I& s# m8 H- p' s
2 ~( K+ H' J: t) M1 z
set customer one-of other turtles-here
6 a, [: c  R9 D) S% E, n
' D& U# L* @1 F' @1 L) J
;; set [customer] of customer myself
4 O, r/ ^/ C% s

' O5 G( g" `4 n1 t4 b6 G# jset [trade-record-one] of self item (([who] of customer) - 1)
) Z' P  L9 m- a" U8 c. C[trade-record-all]of self# o0 W4 o5 I# y; q' h+ ~  R' \3 |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 t. U/ w( E2 A/ `' |
$ P8 p% h; Y/ i/ Q. D% Z( {
set [trade-record-one] of customer item (([who] of self) - 1)
3 ?+ D( ]1 k* e) h[trade-record-all]of customer
8 s+ |( H9 M0 S' T+ o( t
' x1 o5 u, b2 d+ _  j
set [trade-record-one-len] of self length [trade-record-one] of self
( W: D$ [3 ^( v' e5 z& m9 ~
- J2 E8 w; ]" u; L4 ]
set trade-record-current( list (timer) (random money-upper-limit))

1 a" `- {8 f# O; J9 W" D+ L5 V$ L; r  v5 X
ask self [do-trust]
$ w2 x1 \/ g0 c;;
先求ij的信任度& r( K. g' h, ?5 p( h9 H" x: J5 q4 W! S$ f

, S) w$ }, R; P7 P# J% m6 h& pif ([trust-ok] of self)
8 `8 L7 k1 n. _8 J;;
根据ij的信任度来决定是否与j进行交易[) v* u+ v" I3 @# t% h/ u( \( {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 H: h. ~4 f4 q0 }$ U3 e0 _( |4 ^3 q4 r9 \( ]3 T+ Y; W. k1 j/ u
[
: `4 j; \1 A5 d4 Z

( F# B/ z( I9 N' A. Udo-trade
" M# Q( }2 M- ]6 A
4 H1 U9 c4 k/ u) [7 R/ G
update-credibility-ijl
% N2 m! Z4 J9 S2 d

! P+ Y  x( _, @- {update-credibility-list
. q+ e8 q9 A+ K% G8 Q& M

- v" a7 |& p, P! v2 |4 N9 f$ \/ a: W7 d- [8 E% W
update-global-reputation-list

! A( O1 N- C& ?" B) |3 E+ \  j$ z) [& \$ h
poll-class
: F4 w( S5 G) M) m8 L! c4 Y- C
1 m  ?7 z( U3 o6 Y8 h3 {% f
get-color
: K6 \$ p! ]* _0 C' Z9 E
) l# S! v2 J' N4 c+ M+ T( {; _- j2 T
]]3 T( r+ L! v$ t6 _% {

+ T0 R* }& M( j# r" z' K: q;;
如果所得的信任度满足条件,则进行交易9 |# o) h8 w4 r) Z/ B7 J8 g! Y
0 b  I0 V0 ^6 l# x
[

1 ?! ~* u. ~' O: V, D
, x- v8 H4 T; [2 w) nrt random 360
) Q# N, @8 E; K( Y  `6 s
7 p# d* f5 S) ?
fd 1
3 K& V- {' t% h& o, n2 `; ]

" `) Q9 u5 \0 s8 A+ w]

2 q0 w8 A) P" a4 ?7 O7 e9 s9 F; q/ A: `$ [$ _& e; L
end

0 a1 }! }" ~4 i, y# Y5 I6 L4 C) Z8 |6 B
to do-trust 9 ]5 i: }9 c: Q1 @4 n) {0 |# R+ r
set trust-ok False7 B, Q% M# v9 I3 L) U" H
8 u( o- ?) b& Z
) D- ~' _# [! H3 p* n$ v  Z
let max-trade-times 0: a0 ~) `$ n6 g( J: u7 \" I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( t: t0 q( o6 d1 w) klet max-trade-money 01 t8 V! h/ r; i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 }8 t5 e% u; J- A
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" G/ Q$ v) m+ B/ f# |$ V, F, I& J

3 D  a2 k6 @' _! U! x, d
# \( S! Q* I& [; |$ B
get-global-proportion' N, _: p$ ~/ L" r
let trust-value
, b+ J8 ?* y$ Flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 F4 _3 @( `9 l  J1 L. ^4 M- I: K9 `
if(trust-value > trade-trust-value)% h; h7 t" j' Q! ?6 t! _: n
[set trust-ok true]
& J9 P7 k3 W9 W: P7 {end
8 W: x3 y' ]# U  Y8 o$ b
& a, ]; S2 P7 |* X( [; ito get-global-proportion+ g8 N0 q& U1 m% W3 _; S/ W5 P% M: a
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 t. E: `/ K+ D! N5 p9 e  }8 h[set global-proportion 0]
$ k* k4 G4 I8 B5 X/ L[let i 0
3 a% |; [7 _/ [3 Z" Q% Qlet sum-money 0
: {2 L6 H' u& K/ kwhile[ i < people]( M+ F) S1 x- a8 U
[/ B0 c& S$ Y4 `6 V7 n9 u' ?- S# V' G% K
if( length (item i
; R0 P' ]8 A, k* l7 [[trade-record-all] of customer) > 3 )

: s, E1 [$ g$ z- n, h[  G% Q: Y0 ^) J) L- A
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- h& L5 `' M! f5 Y- x: K
]
  D. `& h7 u1 ~; T  P]
$ C. ?! B# f/ [: k* K2 R  mlet j 0
3 P2 r9 Y8 y* plet note 07 v( `: h5 t" v6 b. L
while[ j < people]% e: A: f3 ]! K4 |
[0 k8 s5 `9 B/ J0 |( }
if( length (item i
  P. \, V" q  M8 ~  F! w* ^) ?[trade-record-all] of customer) > 3 )

: G* [+ u, A9 W& s( \[
, P. m/ F* _9 x: ?# F% B# Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- }/ B# G% v, N7 r( J[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. y; W9 j) W/ y( b7 [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; y" K5 h$ D  z" E! i  z
]
+ `5 K. C& b+ K. T( F]
7 Z. y# ?- ^4 Tset global-proportion note
7 t/ }* S! C2 U" X; \]
4 _8 Q( V9 c! |! d( z# i4 kend% Q3 k1 y( ~7 D

( w9 X' N# T* Bto do-trade
" I! a6 L, M* B2 n;;
这个过程实际上是给双方作出评价的过程/ i2 @" S4 ^6 a8 \' E0 ]0 c1 a6 n8 h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* b1 {1 S  J3 x0 ?- K$ [) y, `& W8 H0 ^2 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# J2 W+ v5 [/ W8 f2 W: o: u8 Q
set trade-record-current lput(timer) trade-record-current
1 ^$ {* Z( h- \6 A) q1 _+ R. ?;;
评价时间
) q* ]% u, m. sask myself [
" g1 `( N1 \  S% E' \% T: Supdate-local-reputation
( r: d1 e8 i7 ^5 j6 M5 J) Sset trade-record-current lput([local-reputation] of myself) trade-record-current
$ t) C, u7 m* j* Q, g]
  b' M0 M5 w( G; ]/ Z2 c; Dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ N, r) K% E( }$ t- c& f$ N0 r;;
将此次交易的记录加入到trade-record-one
4 Y5 W& o' W5 Y' ~0 X) e: Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  b8 R3 ?/ {) N* R0 e% ?let note (item 2 trade-record-current )
+ E9 E3 a! p' G) H& wset trade-record-current" }: y6 K( \+ {
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 `( U! I" N# @6 `9 r- q5 r1 Mset trade-record-current
2 o* J. _& N$ P6 c9 R  j6 u(replace-item 3 trade-record-current note)
0 H% R( Q" U  F( K7 ^3 `( j- f3 J; w. j5 }3 y6 I

* f4 R* M/ n8 f. ]ask customer [
7 Q" `% {( V* H& Vupdate-local-reputation
# G: \2 n: A& vset trade-record-current
3 V+ F6 {* F$ n7 b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 \9 e6 m! l: s; R3 c# H2 d]
# [9 }' P& V4 D' d- i. y( z8 N7 @: K; i8 ]( \$ k, C) U
4 P2 Y  H* H, e/ S, e1 J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 S% Y% F4 @3 \0 E
. }  L1 h& T% O& W( M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); W8 A5 a2 X5 y; H# z, [2 C& m
;;
将此次交易的记录加入到customertrade-record-all: H) Q% V( n8 V+ t: f( I5 r: C3 t- ?
end) D- M9 c0 z+ \/ y3 `

0 c+ I2 ^0 f* r7 {. _to update-local-reputation
* r4 [) X" K9 X8 \$ `) G3 nset [trade-record-one-len] of myself length [trade-record-one] of myself
. Q" e* t. ?' Y; ~; P; S6 K5 |
1 _, b2 u% y( U& s) Y9 T: l+ B1 j! G# n4 n
;;if [trade-record-one-len] of myself > 3
' u; r5 R( h. Y! V5 g
update-neighbor-total0 E/ S  a* O$ @, k! C; r& Z/ d
;;
更新邻居节点的数目,在此进行; c) M  }! l% U; x, _
let i 3
& C- o' ]4 z8 q: S2 Jlet sum-time 0$ j2 a$ n6 e8 ?% {/ |" O
while[i < [trade-record-one-len] of myself]- @: }6 Z5 ^4 H& \1 H/ x/ B7 N
[
5 @. q, r4 W3 t6 ]; G, q+ J" L0 oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 P& R3 Z) _& g1 j0 E. O3 B0 bset i& ~  \. I! C. q
( i + 1)

5 F4 |1 b# M7 X6 k/ H; C]
7 a+ e& q  c$ U0 R5 p$ e' Ilet j 3
* y( N. p+ e2 Z$ |7 I% W6 p: ilet sum-money 0
7 Q, ~* u* ^9 p/ ?7 _6 U% Gwhile[j < [trade-record-one-len] of myself]8 r' Y2 b, |  M/ x
[0 h' K2 X0 J; |; m, I
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)# E" B) u3 i, {
set j0 y0 e* [: g, p" d6 D' B
( j + 1)
# S5 g  I% ]- B. c! p
]$ {9 G1 K$ `; p8 F; u. q
let k 3( ?$ d  u& [0 Z+ T
let power 0! g5 Q0 t0 l1 n4 @) x0 o7 i3 f( `
let local 00 T8 x, k5 k; u* F. W; q% v6 ~
while [k <[trade-record-one-len] of myself]# Q/ r0 S+ w/ f
[
' Y' w* m6 j4 R, b& C, _& [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) ! D2 ?4 l4 q$ |7 y# i. k6 d: _. d% ]
set k (k + 1)
5 k) X- u' s: i3 m]
* d( r% h9 z. Mset [local-reputation] of myself (local)( O5 O  {6 p4 y  v; g" e8 H
end1 c" n' `6 I# q% B
( u6 W1 p) H& {4 M/ d! `& y, v
to update-neighbor-total
0 \. P( l/ b- Y
$ v" @' k9 A1 s( x- _- ~5 yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  m8 Q1 v' _1 ]* D" ?4 `; {2 j6 {- [! ^4 [. c
/ V' b/ O) t: v1 N* [  m& K
end
+ Y1 T% c$ r0 o! ~1 N" h  T: `% f1 m3 R0 D
to update-credibility-ijl
7 n) D& I" F" x4 K! M. ]/ {" g4 t6 _6 T) Y& ~, T+ A4 I6 M/ d
;;
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。  z# x- [8 c* E0 y' J
let l 0
7 w% v* v: a& T$ V* Cwhile[ l < people ]
5 @2 G% K# @+ }& [7 U;;
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: C# V% S: M[
* I/ M# `+ k- m$ ]# |% D7 C6 Ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ q+ h; K' u; g; k: @1 s& A( Dif (trade-record-one-j-l-len > 3)6 D5 Y) j3 B! M, Z5 Z( C: x0 }
[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-one9 r% ?# N8 g$ K: @% Y( @
let i 31 D1 K; ]4 N. Q( b7 k: T
let sum-time 0$ B& G' `8 B- l% F/ M/ X
while[i < trade-record-one-len]
( _' G5 T7 Y" l$ N; X' z$ c5 g[3 Z8 S5 z. C8 f; W6 T
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 U7 }9 e" ^3 F6 wset i
7 n4 n3 @% C- _( i + 1)
4 X" O" h1 Z! t* `& I1 a0 Q
]
1 e8 ?3 \; s) Blet credibility-i-j-l 0" o+ ^; t' ^/ }: q) u
;;i
评价(jjl的评价)
/ u, G* }- m) L; G0 Blet j 35 `5 p" p) d4 ]' ?* a; X
let k 4. N1 w$ j2 D3 b/ \* ?- @% S
while[j < trade-record-one-len]& b5 q! m  e3 W, j
[( w) A, k8 R; [
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
- O) E8 B+ ]" @2 d' k. Nset 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 K: F- d. [  q8 t- o0 @( R6 {set j
! V, j4 ]1 d- f& S' s4 r! ^( j + 1)
+ T4 I6 _% x! d# D7 V9 G
]
8 @, F0 Z3 Y+ h1 E; nset [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 ))
* k! ^/ k. R* Y
4 F% I3 u' @( ?0 v9 k3 R! m3 \

1 h0 S; e6 R8 a) ]5 o) G7 clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ V. v6 j1 p  u. o; y4 \( }' q$ H8 D
;;
及时更新il的评价质量的评价
7 ]3 q/ A0 y/ t4 a9 gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 |. E) y! y: B1 j: T$ L$ C
set l (l + 1); r" Y* |( I, r: T8 c
]6 \9 ]7 f+ V! k( A3 b7 I! V! H# ~+ l" ?- Q
end# K" z; t) d# O

7 g7 P7 ~4 c5 N/ G. I3 i5 F6 O% Qto update-credibility-list
. I5 e! D% }2 z" ^  Dlet i 0
- ^% L( G0 B9 Z4 Awhile[i < people]" I/ m9 j: ~5 e
[
8 Y9 s6 R( M' e6 o. Z* Ylet j 0
' T2 R2 Q1 a& \; \( i" `0 Zlet note 0
, o* ^) ?* j3 e# Vlet k 0
2 x5 F; H1 U5 C;;
计作出过评价的邻居节点的数目5 V8 b( Q9 Z; o" F+ v5 S- c
while[j < people]; j) k$ z) E+ \- J" d, J  c
[! O- F7 ~* l0 t( x% i6 R
if (item j( [credibility] of turtle (i + 1)) != -1)) u2 F0 h3 f' e* @/ n+ P8 t
;;
判断是否给本turtle的评价质量做出过评价的节点& q# M# L% y  m
[set note (note + item j ([credibility]of turtle (i + 1)))
8 r/ S. Y* k( f$ t$ [; V;;*(exp (-(people - 2)))/(people - 2))]
9 M; y8 r7 i9 N: P2 _
set k (k + 1)' O! V: e" v: Q8 D) k9 W
]( L7 O' d2 P' l
set j (j + 1)
% Q% {7 L/ U7 s7 ~* g! i7 P]5 q, ^' E. [# s
set note (note *(exp (- (1 / k)))/ k)( @& T9 i: V+ ^
set credibility-list (replace-item i credibility-list note)
5 _+ G  {. Q/ _7 U' o: [2 Wset i (i + 1)7 D5 Q2 n& N/ F7 K4 ]$ u
]
! f9 M, N/ e* s+ d2 v. w) B! T/ rend' O/ e7 P7 \+ o0 ?
9 a  a/ t7 B1 |+ d3 W) |$ Z) q
to update-global-reputation-list
- H' G. I, y3 Z0 Olet j 0$ c8 k: ?3 y7 y7 r& B
while[j < people]
' r2 r3 o+ ^/ u1 ^0 D[
9 L: N' \) N  P$ Glet new 0
% @1 G& Y: ^" u) n3 [0 J;;
暂存新的一个全局声誉9 M9 e  d2 V. C
let i 06 c+ k+ `" L- H1 t' d
let sum-money 0# G8 }5 K( J/ A' j% e  L
let credibility-money 05 k( `! L6 E$ }" ~3 X
while [i < people]4 v+ x* R9 s$ T
[
+ {  O' ~# u5 V; \/ c* @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); b* h4 q" k3 a+ _$ D# E/ n5 i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 j/ t: i2 k& I4 |) B, d
set i (i + 1)' L0 @8 ?' W0 Q/ [
]
6 K- e* F) U7 Y, u1 v% Xlet k 0
2 D' \7 p; f" |% h9 klet new1 0
' r( Q" b/ O2 iwhile [k < people]  Q% t2 G# l; i: m3 k
[
7 x" ~* [( U" M2 _, m3 S$ kset 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)
1 `; O+ ]9 `& A% ]+ r7 b6 A  yset k (k + 1)0 b! Y: @  `6 c: a* Z4 K( X
]: [1 o* a) m: W! [# W; A
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" }" A6 X( Z: Zset global-reputation-list (replace-item j global-reputation-list new)
$ j! A. n+ B2 M* h$ f% Iset j (j + 1)
) I6 o8 P8 T* C) b& {. l- V]
5 ~, i; X0 p0 |5 W: Pend" N0 H. E$ O- \; i) n

" Z0 U1 K8 s% s/ n' @' \3 o2 n
3 {" s2 B! o# Q- }% n) A7 q1 e/ m* I$ x
to get-color
. P* L5 m6 F! G/ O% Z+ Q% x+ z) d. {& |/ U, d0 _
set color blue
9 v2 J& Y3 H3 b  w! {
end
! X2 G! Z: }* L1 g7 Z9 t  V! }3 p7 z) V8 P) |/ h8 e
to poll-class  K, [, R# m4 X' B) O
end3 Z. b% w& |: D+ i+ w, p

* C1 u$ l, Z2 M/ F4 E% g/ _to setup-plot1
& h# x4 L6 R7 _. C8 q# ?% L. q5 Y% A1 t" C, K9 \
set-current-plot "Trends-of-Local-reputation"

! Z$ Z% j- D5 x$ E4 q
1 ]8 k1 _$ h* V$ C) _/ s7 `set-plot-x-range 0 xmax

5 g8 T" `" c; R9 b6 Z6 p% }: J6 ~6 f, W6 c% C3 x
set-plot-y-range 0.0 ymax

3 S* G: a& a: }) y  ]: Zend( S8 }# \" D& K$ r+ X# T! Z1 ?2 o

1 {4 }6 K4 I. k( g6 S4 Eto setup-plot2/ E/ d! ]$ G1 T" r" C

. ?3 d9 G5 j2 S7 O, W( T1 Eset-current-plot "Trends-of-global-reputation"
' Q8 w% j8 |+ K

$ O$ J6 I& U' x: W  W8 Dset-plot-x-range 0 xmax
( D& S) ?( Q9 _/ i( T. ]( [
6 K5 W. y" l# U* Z# `: Z4 i% y
set-plot-y-range 0.0 ymax

  V: {+ s* g" X; o! j4 aend
' L; h7 ]+ `0 \7 W- [- N2 x+ z% |- C. Z/ [2 q
to setup-plot32 |& d' a/ r$ N
3 B) \0 x) ], w7 Y
set-current-plot "Trends-of-credibility"
9 P; x9 i- f5 ]# L( H/ T

! f" N. e4 [  }9 f' D+ hset-plot-x-range 0 xmax
+ q- }5 O2 X& m) I' H( w1 |; F- y
% a) K. r$ a2 d9 u
set-plot-y-range 0.0 ymax

+ j: E9 o+ w9 m6 h1 w$ b0 K0 [' g# o# g( Cend
6 X0 U7 K6 |; o* Z
( p6 ?5 |! E- e& mto do-plots7 R4 K% [6 J6 r2 R: @3 n
set-current-plot "Trends-of-Local-reputation"
1 D6 M3 X6 ?$ |, o7 b& ?' m3 c, gset-current-plot-pen "Honest service"! P: @/ j- h. t) g# U, R& W6 @% T& t
end7 Z0 G/ N- Y* r$ i  @

, H: [* Z- y- p$ U: {( q[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x
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.
- _, T6 N# [& d7 f
* m! Z, W+ ?  X# _+ p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?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2025-12-9 14:36 , Processed in 0.031997 second(s), 17 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表