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: 9955|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:
& g; a/ E5 v. H$ _" R. S3 v& zto do-business
5 @0 M; M! W9 a) o; k1 U rt random 360
2 J$ I$ w/ K8 C fd 1  d, F6 q$ Q1 N  T9 z' w: c
ifelse(other turtles-here != nobody)[
) J, Q9 i* x$ s. |( o3 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.
9 h5 Z0 z, `( z6 m   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& v# `  z6 i4 F% n8 A2 m2 U   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 p4 u* u$ F' s: D* ^   set [trade-record-one-len] of self length [trade-record-one] of self
$ l, @% B0 T7 D5 Z   set trade-record-current( list (timer) (random money-upper-limit))
5 f# B% L! ]' `! H! x. Y7 }+ o6 M6 Z) ]* Q* h+ X# v5 |( J+ V
问题的提示如下:
1 P. P3 W4 \8 v* e7 [
' e0 V4 \  ~! |+ y; Q, zerror while turtle 50 running OF in procedure DO-BUSINESS/ h6 c! @/ T3 ~7 D. y5 {
  called by procedure GO% e4 I3 F% Z3 l  y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' S* y" x' X4 A/ v2 @; G8 C+ q
(halted running of go): r. G  S( H5 C, k" g/ C/ C
: E3 k& q: s: ]
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~~
7 w2 H$ T( _$ H- L+ u7 L0 K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. q5 m/ N, Z3 N- P1 {$ S" u1 O* Y
globals[7 ]* ?5 A, e) i- }0 ~3 p: y
xmax, K3 a1 P8 g8 H  h6 |
ymax9 o3 k7 W& g% Y" Z
global-reputation-list# c' h7 s9 \. T: a# y6 W9 D+ j

" m) A2 `9 [: s! a;;
每一个turtle的全局声誉都存在此LIST" z6 |8 M( h6 A3 C$ _" k
credibility-list
/ @* C: t7 l+ c( d;;
每一个turtle的评价可信度
- L# a4 C9 i3 z' y/ k! D/ B9 phonest-service- v' f, y1 {7 I, K& q
unhonest-service
. ?2 E! m1 P% D5 b* [% K6 Koscillation
7 L+ V% K+ ?- f% Frand-dynamic
4 d5 _& r( R( U; H6 \]1 c% Q/ B* a: R% Z4 _1 N4 r8 ~

% _8 R9 f! M# O- f' gturtles-own[, K+ _% |0 _) q4 ]
trade-record-all6 U9 w: \; U6 N8 ^5 N9 q: m$ e0 c
;;a list of lists,
trade-record-one组成1 L+ x7 e! b! h: c% J1 B" L) E
trade-record-one
2 Z$ B5 @9 Q5 @2 ]$ _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: X6 E$ h5 z+ p1 |7 @/ ?/ U3 ~2 M" \9 E( J
;;[
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]]
& C7 s% i& L7 r# ?5 S( utrade-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]
$ }& w1 ~2 Z: F3 T; n6 N; 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% V4 `0 X; }5 I2 v
neighbor-total
2 L- x1 y4 ~# `6 [;;
记录该turtle的邻居节点的数目
9 D4 ~9 M( Y  C+ @- Itrade-time( E5 \6 W1 H0 K# r0 z
;;
当前发生交易的turtle的交易时间" D5 I  ^8 E+ B( G
appraise-give: W9 W+ a3 J. o8 H7 Z2 U. x9 Z1 v
;;
当前发生交易时给出的评价. N" u8 S, U' {( [- \
appraise-receive
8 ]; G% v! n" W  A# Z" u0 J' a6 a;;
当前发生交易时收到的评价, {3 a! X: S) K
appraise-time
5 ^% n( h5 \* s0 K, Y;;
当前发生交易时的评价时间+ t, _) t2 L. ^, p* P: J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" x- n* T) X; Ntrade-times-total
5 H# `6 l; X3 M4 i1 C;;
与当前turtle的交易总次数
- ]4 c% X7 U6 C% Y6 qtrade-money-total
! {# c  ^7 }: v' t; Y, m;;
与当前turtle的交易总金额& j6 P, h1 n; q0 v, t3 m
local-reputation5 G. f2 T2 B+ \8 C
global-reputation, O2 K3 ^' h% ]9 }
credibility( j  l: f1 x& c  g3 p, V
;;
评价可信度,每次交易后都需要更新8 V4 b' f; L$ y% Q7 _; \9 i
credibility-all/ a, i; G9 D  t% p+ X3 M
;;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
: M+ D9 m# b$ r" M! r1 `$ S9 t# o# X
;;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
, V- e8 V* g+ O6 A- h( r; ?" ccredibility-one
& D# }* {2 D$ \& Z( Z- a  w/ R;;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( ~0 i, i* |# i* H7 O
global-proportion
( A7 s% T4 h  A" V% \: Wcustomer
, S0 k( J& I  M0 ^customer-no
* P9 ?4 e, {& @! jtrust-ok& w# o4 ^2 L% ~% L2 y$ f
trade-record-one-len;;trade-record-one的长度! H: L4 r" W8 U" k
]/ M5 q* @3 A$ c' f* Y3 [
! X* c9 u/ ]* X  n, a' a
;;setup procedure9 D9 i  c: o! e- n% y  q

% C, @) J5 L: f4 x" k: lto setup
5 _/ k% J4 e0 u" x
, K' H/ x1 q1 ica
3 B  B. b" D2 L

9 V( s- L# g8 w) u, vinitialize-settings

+ [4 M  U; |4 H% F7 _; i  J8 @+ t9 N, B0 O( G1 \4 o
crt people [setup-turtles]

# G& B( C7 Q- {+ C; l
9 K0 V! O/ A  R) ]* @& vreset-timer
) l+ Z. a# |8 T1 v6 X/ H7 K0 }
& I% _# B% j% i1 j0 `$ q
poll-class
# b& I) n% X8 _& r) n+ @

) A$ S2 Q( n+ g* X3 D4 f6 [/ _' o# ~setup-plots

, u$ N# |* a. A# U$ h9 |
# Q2 K9 }0 z) c# P+ F' odo-plots

  A2 g& H! d; E+ [* A. p7 Hend
  y* U+ U# o/ T" ~# B! h9 O6 N' E/ u: f- A& K! {( e
to initialize-settings
5 m$ A' {  o3 m/ v7 h7 S" L! \: }) l1 v% t
set global-reputation-list []
- w9 @4 i) {. x" D

" T; c6 F9 Y0 ^; N" y* zset credibility-list n-values people [0.5]
5 g; {( P' ?8 F/ l; I, F" @9 I) ^

9 K  s5 b% z. \( K  z) vset honest-service 0
) p: ^8 V" S: u/ o. ~9 O

! X: Z! S3 F( wset unhonest-service 0

) X6 G4 y$ ^' j$ c  h+ a
8 s$ c2 Y  A9 J- X; J6 jset oscillation 0

$ L! ^5 i7 G- m8 d0 [( f
1 \: R( o3 W2 Y/ ^8 O7 Cset rand-dynamic 0
0 u! O+ m9 h# Q4 ~
end
# H% L2 P: ]2 k& a, k) v
- N2 m4 `* H; N: D) y9 `to setup-turtles
1 d8 k! i* l, C0 j  W' d5 wset shape "person"7 Q) u! E$ {% E9 X$ \
setxy random-xcor random-ycor, o/ l7 z! M+ Z; ~4 }1 ~
set trade-record-one []' C1 O$ x* I+ l2 k. z
7 {, U5 @, i% f/ {
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 b  M  y* L3 O7 z% L
" ^5 M+ N( n& `  y9 X. t9 Z: G3 o
set trade-record-current []' T4 O9 d, H8 M9 O) b4 f
set credibility-receive []
$ b$ Y- I. c8 t9 Pset local-reputation 0.58 W+ L2 ~) ]8 @. d
set neighbor-total 0- n* l$ t: i2 }( F
set trade-times-total 09 m' @- Q: @% \
set trade-money-total 0
& r* ?5 r6 j2 w/ ]6 nset customer nobody
4 N! ^0 j% d4 r# D$ u% ~set credibility-all n-values people [creat-credibility]
# |9 C7 x# Y8 Tset credibility n-values people [-1]- t" ?% J3 e! f
get-color
- V9 c' O6 [2 |8 V& e
$ O  f9 P( {/ M" o
end
  A2 s* v' _7 h. `/ r
; v; T% c2 Q5 e7 n; M, Pto-report creat-credibility) J* i2 g% ^# A6 K! q
report n-values people [0.5]
% }/ o# k1 @: ]* w  X9 ~end) P7 i5 l) _  q3 Z+ l

4 V* p  e, \. M5 N; B. Dto setup-plots
2 w9 j/ q  ?; w4 v4 L2 l0 E2 H& s
; \4 c: S; E# q" @7 Sset xmax 30
2 |2 Y) ~8 R) w4 h8 Z/ a

& V* {6 D% V# [7 ~7 |& zset ymax 1.0
$ `% c3 t' I# ~* v0 [. q
" R& k8 N- b4 E& i
clear-all-plots
4 Z4 D$ e% b) k  i' m) h; p* c

( d5 e# J" y) ~% {. ~/ {setup-plot1
5 x& v3 _2 m0 N% @9 u( w6 @8 q

& z: {) D# V7 h9 S. Esetup-plot2

& M# I0 s9 L: t* w# p5 H+ {9 x% E  _9 l9 a/ _5 b1 r
setup-plot3

, ]8 e! v4 l% V  h; I! M6 |. Vend! w" H6 [; [1 b4 }5 C' |9 H
9 H# Q+ A: ~/ F* }( c5 P4 R1 J) o
;;run time procedures
, J7 a6 L/ s# g- J$ M, G5 t- O) P0 y  {( Y6 y$ A0 S1 w2 R
to go
/ _% X9 Z9 H. ~( m$ F8 U- o4 L2 P4 O" `$ ]4 B- l
ask turtles [do-business]

$ o0 @5 h" @% y, c- X4 Xend, z7 ~) q, k* n% ^0 G3 [. t
% _, C6 y: X7 j$ g. {& }, `* p' k
to do-business * _; v( B/ ~& s1 v  ]+ ]  ~1 W

. J' P( V) D, q. D& K2 N/ u& K1 |8 {, D5 _  A8 b& F3 A
rt random 360

& E( K6 t$ }3 S+ M- Y; I0 k
& W7 R) @; d' @' _/ P$ Z0 K  [fd 1
, X7 \2 G) L+ Y) t% x$ d9 D
8 F' i+ U  @1 H: E/ ?( J
ifelse(other turtles-here != nobody)[

& m; S# e3 [$ y7 J: C) ~5 P. {# ^1 `* n1 k; Q3 I* z8 I3 ^
set customer one-of other turtles-here

4 e! I/ g. ]# T4 q& f* T9 p+ F2 j$ h% V: }2 v
;; set [customer] of customer myself

3 a+ ~! Q0 M) ^0 {; ]! |$ K
7 V  d0 [1 f6 J* |set [trade-record-one] of self item (([who] of customer) - 1)7 @5 w4 u$ r8 h- S
[trade-record-all]of self
8 s% t" L2 d+ j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" U( B6 j! F6 i$ z4 _" z
+ U+ H5 X9 V; E6 f
set [trade-record-one] of customer item (([who] of self) - 1)
- U4 X, k% T7 l7 t4 I[trade-record-all]of customer

3 V. a3 i+ C/ H3 c1 S1 Z' E6 `; ?6 P6 f5 X# V
set [trade-record-one-len] of self length [trade-record-one] of self

5 s' h: b/ M- F' e3 x5 i8 d( S* ]! ?# @9 l5 S, v2 ^
set trade-record-current( list (timer) (random money-upper-limit))

% A( |1 @$ }9 G# S- p2 B: ]1 d5 K0 u+ c# h0 u- a% ~
ask self [do-trust]
) D1 i+ Y. G8 K5 z- B7 n$ f- z& D;;
先求ij的信任度
- E0 D7 {2 B# C9 m
7 U2 ~' r! [: Q) Kif ([trust-ok] of self)* W8 m  g1 t2 ?1 a) [) K
;;
根据ij的信任度来决定是否与j进行交易[
) T  D. N, ~5 ^8 i1 t. q! p0 _8 Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' W. m* ?: a) ?. y/ W
! v8 W) a# M/ I( W[

5 m+ l8 p* @" T$ \
0 B! t; o) Q  I) tdo-trade
& t$ Q/ F, E; P6 F
( M( ?! o  K1 O  b4 ~6 {
update-credibility-ijl

. Z$ U- ]& w6 I3 E& t0 r" c3 v8 Z& c3 C
update-credibility-list
4 @) F  S' G: \/ i$ J. v. T) ^
( b$ \6 q" T; `9 \2 F# w" }/ M2 B

& b7 U" W2 N5 k5 Y6 B' |update-global-reputation-list
$ a" ]- z9 C3 A1 K

; ?  V( o( Q7 |3 [8 I' Kpoll-class
4 k0 t# j5 E+ S3 B8 `4 C

2 c+ N& c1 O" Q9 Q! rget-color
8 t. y+ A) c0 Y4 S5 o# R7 l0 [  n7 Q

4 C, ?4 R( m0 G: C]]7 Z! v2 e& D6 X& W

  v. P+ w' j$ N& r6 }/ S6 c;;
如果所得的信任度满足条件,则进行交易
4 }$ J. P, R; t& X2 R" `. m1 c" @/ x" x5 L
[
! B! `$ G7 B. g+ P4 y
& J9 N  c  }/ O
rt random 360

" `- \- c. R. {/ F  U1 y2 i
6 H) y; C& i' h' Bfd 1
/ v' A  r. X% a

1 I8 B: ~2 t# P  G]

9 a& M& V& f/ Y3 o9 ?! v) W/ v5 T& S$ l* ^+ `( x
end

9 o! G' s+ {5 ^0 }4 b, Y: D% a8 K8 E# j3 A& }* @2 w
to do-trust 7 k: U% h4 w1 f) `2 d4 a6 r
set trust-ok False
  A+ B7 t2 P4 ]: J0 j
8 Z) n& a/ Y9 ], L
! @. [' L. f4 @# d9 i, f
let max-trade-times 0
  L& @! Y6 x* [% x5 d9 gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 ?. c; X5 J2 ^let max-trade-money 0. ?# C; [& ~% b; T9 ?# G
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 i: m. A: B& `" f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 c; i& K# g2 a: u9 L8 x  D8 ?+ Z# f+ j. U

+ ?& U4 |! D. y7 B( g* aget-global-proportion9 z, G; S! k- c0 B! O
let trust-value
" ?4 Z% L) |5 N" g1 V+ 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)

3 I6 X2 ~. w1 J: {% G0 A+ n: Jif(trust-value > trade-trust-value)
: h: k. w9 K( t& S2 _  R[set trust-ok true]
" S2 m6 ~. E1 l- r) Qend* O0 s: P2 o, p! N( t) N
/ L( `$ e9 ^  @
to get-global-proportion  ^& S8 u. r. g8 p& i  B0 }5 U8 t: a% k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 S* E! D' f: k9 A1 h
[set global-proportion 0]
1 Y9 N" T/ X2 b" f# h! F5 x[let i 0
2 w/ ^' Y) Q- S! o* v/ U3 glet sum-money 0
  d* |* r" \8 T0 K7 o( t# bwhile[ i < people]
, H7 b" E$ b  S4 s[
" n% I" U% E- I: Q2 p, Gif( length (item i+ b( O7 x! `( t2 Q
[trade-record-all] of customer) > 3 )
; v0 I  C% i2 I3 {
[
0 [$ `$ y2 ]% M$ ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# }0 {: Z" N. S]1 }" v1 S  z5 ^0 m
]9 I7 ?  [1 S: r" p& V* K
let j 0* p* \9 H8 ~- w( `7 _) s! h. t6 N
let note 0
8 L% G, s8 B! I7 wwhile[ j < people]* I, m  T2 n  t
[
+ t. T# V( k; H' ]if( length (item i
1 V" {& t4 R7 }+ E5 ~9 ~[trade-record-all] of customer) > 3 )

. S7 ~$ y: [6 c/ `[
9 }" T# u3 ]1 H6 J+ e& p9 Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; j5 Q% r$ v  m/ n8 l% s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# Y% a" Z+ c" @2 h: v) G9 b2 q% b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( d4 R! |0 R/ k  F]" Z: f6 {$ I! a: e
]( m, ?$ V2 k; y, I- l( R: k3 |
set global-proportion note  ], h" L4 s$ F  G3 i$ I
]
8 l7 [$ i% }( f/ W# ]! d5 @end
: W$ l' l( i: m* Z6 K- f- R% r  r) b
to do-trade8 D1 A7 r$ h4 k) ~3 A2 y
;;
这个过程实际上是给双方作出评价的过程- w" Z& X9 ~0 U, z" D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& P. Y" p" }- `# ]! u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) Z6 o7 F" m: g. ?" I, W
set trade-record-current lput(timer) trade-record-current0 J- b4 X; e8 c) L  M: W
;;
评价时间& C/ \9 P7 c5 j
ask myself [
( A/ z7 u+ W  ?8 V  }update-local-reputation
+ n2 v' b5 b: hset trade-record-current lput([local-reputation] of myself) trade-record-current
8 a; q1 ~1 D  ]! k1 K2 v' ^]
) ?; E, n9 ?; Q) N/ U) l) p2 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 u8 A$ S6 J# V4 K! K;;
将此次交易的记录加入到trade-record-one
5 y# [) \1 k4 n% bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 E( S8 P1 p, B' N1 Ylet note (item 2 trade-record-current )
$ p' v0 q  W2 W& w% |% Yset trade-record-current
8 D/ [$ e) @. @: E! K% p9 h! Z$ v(replace-item 2 trade-record-current (item 3 trade-record-current))
# t  |' W1 ^9 k
set trade-record-current9 V; n7 T! n5 J* h0 `
(replace-item 3 trade-record-current note): X, Q: u: F9 F" A  u6 S$ X$ Q9 k3 @

' t$ |1 v1 G) [: @" L
7 ^4 E- {& K3 o" [
ask customer [/ b$ Y5 D, M% B# \) P1 [0 A
update-local-reputation. T! w8 k* s% Y: w1 I
set trade-record-current
/ Y$ x$ z3 d0 M9 S7 d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: V; ~# Z3 [$ C9 d' K# C+ Y2 x]
- o/ @6 S) r9 |4 @7 Q6 p% @
0 s* _7 [* p9 Y5 I  h0 x: A
( S9 E# X# C9 Y& Y4 c& {" V4 Q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: F: f1 l0 t$ R# Q! ]# q; m( }5 }

( w* l; E+ o  I8 X4 [( @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); k0 p. c0 d2 L% E3 p1 b
;;
将此次交易的记录加入到customertrade-record-all
3 v) E  D  z; Z5 M  [end8 p. j$ m  U8 t

; Z+ B4 R8 H% Q) xto update-local-reputation
) G1 r- j7 W( x1 }8 Z$ ^+ zset [trade-record-one-len] of myself length [trade-record-one] of myself
  d" X+ W0 K# u0 R
; \9 t& H# s2 d+ j. E
" j0 R4 I4 G0 Q0 G( L! w' x0 x6 w;;if [trade-record-one-len] of myself > 3

/ w7 u9 Z2 H; t) gupdate-neighbor-total
% C! b+ Y; y  ?( e;;
更新邻居节点的数目,在此进行
: M$ v( W8 ~3 H! Q% flet i 3
' O0 f* a  S' n9 C' V4 Flet sum-time 0
" Z+ `3 s. y; d- z! kwhile[i < [trade-record-one-len] of myself]5 E. Z* a0 l5 V
[- E" ?! w0 W& r3 m5 K8 P9 v% W  m
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" w; y/ ^9 {5 f9 Rset i
- n3 h) Z% \# P# A1 u- o2 P4 P( i + 1)

8 \" E1 j0 z) q( I* j! K) \]; ]4 N: m1 t2 ]- M2 s
let j 3
) w% [- ]- _9 t- j7 Klet sum-money 0
0 z; O- Q/ j8 Z% F2 u1 K6 \while[j < [trade-record-one-len] of myself]
8 o- v- l. ?  Q# A[
" G8 @  c8 H4 F$ a  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)
+ E# t& O9 D: ?set j( ?6 v# ]5 A; z  D: f  |1 l) _
( j + 1)

/ v7 }  ?) ~7 r  a]/ k" b9 L: i: M
let k 3
2 x! y  ?* h8 N# j: ^2 ^4 C5 Zlet power 0! [- D: y! Z- H5 [% l. J1 v
let local 0
1 h2 T# F1 o8 p# Swhile [k <[trade-record-one-len] of myself]
/ h5 u- y1 J; c0 J% h1 e[' L' j# M0 k+ s6 b. @. ~: q; H
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)
/ T4 B7 p/ a$ b6 {set k (k + 1)
# S0 u, T" l9 E) Z9 ~8 t]
+ M- J" T$ E# t! A- f" J& Z6 Eset [local-reputation] of myself (local)
3 e) w1 k. W* }8 Aend
' k8 ^5 [4 k1 g& {& w
% `, ?) }2 Z: ?; P) ^. Lto update-neighbor-total
: e4 z& R* t9 V) G; X! t6 L( V2 k3 N( [1 j  J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 c+ Y) H' m! P

% p7 c$ P# H3 W: j$ U7 O
2 M2 x- C2 o* ~3 K/ n" ~
end
* b6 ~3 g% J# [8 J$ |8 D. _7 z8 n) m. z, ~% ^( j
to update-credibility-ijl
. T" r' _5 G; S! L( a9 K
3 ^0 Y, W7 w( M6 G;;
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。1 d/ n. P- k( G; @! p+ o, d+ \
let l 0, M9 f+ o% i' W1 ?0 H: [8 F1 P
while[ l < people ]
* C% q: p2 T) _;;
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 M( V8 V7 t) \[1 g+ M( E% E; r- z1 @4 l5 `) _2 Z, a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: K; X: M; O, bif (trade-record-one-j-l-len > 3)) t, F$ G7 q& ~) a) z8 v' f* \: Y+ B" C
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one7 }" f: l7 e- |& i! ^/ ~& D
let i 3; S. O* y8 d% D, y& C' e8 [
let sum-time 0
* L* N  y/ z; |; ?6 p# owhile[i < trade-record-one-len]' Z$ m* E* b% \3 w/ u
[0 T! ]- a% U' Q% K, H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! i" ^" v* ]1 `' s% j- V2 s& E5 g
set i1 v7 I* `  }, e2 m7 D2 c, ]
( i + 1)

9 Y, r9 P. H1 s% Q- Y]  e7 J/ M# k- d: S/ c
let credibility-i-j-l 0( _2 D* Z; _) {# }
;;i
评价(jjl的评价)" p% J: `8 \5 U( e: ]; J
let j 3
4 B' K, `8 L5 b/ ^, klet k 4
1 d" Z9 F: x7 Iwhile[j < trade-record-one-len]
4 G' D) ~# f, q; V: j' t[. Y" X2 ?; S- n5 _' f
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% ?6 G2 ?) P3 d
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)
( R  s  [* e) V1 L: N- K4 T8 o: Vset j
5 S; q2 \: V. w, r4 y; P. ]1 r6 f( j + 1)

" Y: g) l' i- r$ ^]
+ R  e- w4 ]+ A( e, ]* Xset [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 ))' }: \3 H7 k% @) C7 p3 v6 L+ Y/ a
2 N+ r) [3 w3 Q, N* _( n, k
% `* G% o6 h9 y$ ]
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ h  b3 V3 P; k1 r0 ~/ U! `' C;;
及时更新il的评价质量的评价
- Q. @/ `" Y- A& y) V, f( z' Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" B+ W" D" N6 x0 c
set l (l + 1)
# ?/ O9 F" g' K2 O* ]" T5 k]
# r- v, {9 `/ z# Nend
8 V9 D7 Z' t( h+ b) ]9 c& z0 g, i9 s) @: o% Y8 f
to update-credibility-list
6 v/ M4 T  L. v0 q' j2 }let i 0
+ s0 y! K7 E) P' ?while[i < people]3 Z8 Y7 r5 R! X: p
[
1 H( O' q  L2 K- \& C: b6 olet j 0* f" U% o( y9 g8 A. O3 ]) u& w
let note 02 K. ?% {0 X% v( @( t9 f- `
let k 01 j1 n& M8 h* l) F* A
;;
计作出过评价的邻居节点的数目6 H" r4 E3 V" L- e  Z# O6 Y
while[j < people]
& E3 ~/ p- j, [1 T4 x: z6 X" o[! c+ Y1 q" h& b) B. d1 w7 Y3 S
if (item j( [credibility] of turtle (i + 1)) != -1)( C  t( ~7 |4 o) K
;;
判断是否给本turtle的评价质量做出过评价的节点; ?* V: x) a8 p2 @( E4 E' N
[set note (note + item j ([credibility]of turtle (i + 1)))
2 L; F) Y( B1 K# F3 @;;*(exp (-(people - 2)))/(people - 2))]
. T) X4 a5 `. \+ h
set k (k + 1)
7 S# Q/ `% R4 W+ c) u]7 G! o" @8 j/ C# [8 l+ G* R3 D
set j (j + 1)
" _4 T3 y- q- ?( S- k]- H5 D3 A' m( G* {6 [
set note (note *(exp (- (1 / k)))/ k)- b- Z& S. X4 N: K2 e# k3 |! v
set credibility-list (replace-item i credibility-list note)
( z  }8 [- `' W6 V$ D0 S  Z3 n5 Xset i (i + 1)7 `7 A, d) M. f: Y
]
0 @1 v! J8 C/ F, R$ qend$ Z% s1 b  X; C9 q( H. S% a3 ^
+ a2 }# j( C- S! b( I1 W1 G
to update-global-reputation-list( m$ q% }4 S- W) [6 S& H
let j 0* Z% C" P& K8 \% g3 L
while[j < people]
& r4 n8 A$ V3 _! e' ^[( _; _# d8 k+ Y" a2 c/ Q+ u" {) g; s
let new 0
+ y, O/ L4 R8 }$ x' N;;
暂存新的一个全局声誉
$ v* I% h3 A; M1 y5 Dlet i 0
+ j. E4 ^) n& g  o0 Slet sum-money 03 U3 y* l& a7 k$ Y2 l: J- k$ [3 s
let credibility-money 0
+ `* s) B! f* m% l) Y: Cwhile [i < people]& x! m. e' N% L+ u& O. |: D  L
[
5 Q7 V( U) W  e5 ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: s( V0 y9 H4 F: d1 ]7 dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 a+ W$ i3 @  t6 G& l5 A
set i (i + 1)
7 ^3 K% g9 u, g! Q7 Y0 a/ ~]
1 s; d" e0 F/ Ilet k 0
5 c, W+ B# d" P. qlet new1 06 f2 {$ i' p/ `
while [k < people]) V+ N- W# X9 ?& F
[: W( H6 Q+ w% ~5 k
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)2 {  {! q) ^. M
set k (k + 1)
2 o. R) i6 f* z7 w% I& C]
' C7 M- v+ Q2 y  ]& h' y. xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 \( P4 M9 L0 i& e8 a
set global-reputation-list (replace-item j global-reputation-list new)8 H0 r: W4 u$ f6 Q( o3 P  O
set j (j + 1)2 t5 N1 `( m8 m- ?  A7 ^/ ^
]" t- J) f( K, ?& Q) P) O
end
! n2 m# N  w8 T4 t
2 f! O' O- Z' J% z1 H& a) C4 }( |% A* |# j4 U
7 i& F9 O$ o% X" A
to get-color
, K+ y% B3 u: L+ Y7 u$ Q
: ~4 R" [9 N) l  V4 f0 J! P5 zset color blue

% Z) K- J) ~, V0 B" bend
# ^: _  e6 a) e* H$ s+ \7 L4 D1 j' h4 C+ A; w- U
to poll-class1 e; a) Q+ p8 l( i  ?9 c8 a- b
end
, ?. u8 H: q- F1 m2 B& e( q2 {( v1 ]" W
to setup-plot13 W8 N% G6 k' z) N0 [5 R- H
3 P7 ~, D/ O4 r
set-current-plot "Trends-of-Local-reputation"

7 t+ |  x$ Z+ [$ @4 {6 S; V9 K! I" ^6 r" y: |2 w  d; Q8 s1 D( r
set-plot-x-range 0 xmax

# V1 M7 R' r. F  T% c+ z8 y' B- n) k7 R: n* Y+ }# V
set-plot-y-range 0.0 ymax
6 C7 s, _# [/ m" i
end; f8 }/ y* d7 A. b# H
& S+ r$ w0 b; C  d1 `7 R, ?! l, z5 l/ E. l
to setup-plot2+ Q5 _# L: K* t$ A# p

3 a2 \7 k0 ]7 \( ^- ~+ _) Y3 u: Zset-current-plot "Trends-of-global-reputation"
# b! R+ o* n" o6 z) v6 Z, h; x8 o

* _3 W5 P" O( Eset-plot-x-range 0 xmax
+ \, k/ z5 P; d  q9 D8 `4 ]6 ^; W

, a0 [+ I. o  m- `& rset-plot-y-range 0.0 ymax

; Z1 Z, i1 P! mend
& c: K+ i# j  K
$ b: @6 \; s( W: Ito setup-plot3& V* a( g* @  {
- y! e4 ~3 N* {5 l! g7 E# y8 T
set-current-plot "Trends-of-credibility"
8 L* i0 a5 L  S& p
8 \2 ~0 [) `3 h! b' f$ s- K: ?& ]% S
set-plot-x-range 0 xmax

+ N8 v/ X  _' w9 z. |0 _
  _( Q* t, f$ `- x, ^/ Jset-plot-y-range 0.0 ymax

$ T" ^# }6 |3 [5 U& x! m& [end5 b: T; D: l; o2 P5 [$ c

. Q6 x" e. e' |to do-plots( d( }1 Q2 q6 @9 z
set-current-plot "Trends-of-Local-reputation"
: j/ t! g! }( W6 a, T) D0 Vset-current-plot-pen "Honest service"4 H( Z- O$ \$ u( B  a. p1 i6 j
end
) x2 \) n& x4 N, e
8 Z; p7 K2 U  h; J# P  D/ k[ 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.# N! Q4 {+ B+ O5 K! U" o
) H: Q4 @# s( l1 D1 K
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, 2025-10-14 08:08 , Processed in 2.809348 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