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: 17042|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:$ _3 ~2 H2 n, P; k- w4 H
to do-business 5 \- A2 Y4 S+ g0 }" X8 I, p
rt random 360
4 \7 I. H! I" w/ T, ` fd 1
4 Q1 @% {- {) ]% v1 g ifelse(other turtles-here != nobody)[' ~& V4 ?' I! u) ?
   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+ c/ v/ Z3 E) `* [9 i; d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" W( M9 R8 f5 i/ |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) J, r6 b7 _. Q( }5 R: C8 ?9 M$ O9 O   set [trade-record-one-len] of self length [trade-record-one] of self3 T* \& o* i$ d0 Z6 w/ _' v; F
   set trade-record-current( list (timer) (random money-upper-limit))
; L( b5 e, g0 P! G9 |& O  k' _
) f8 }0 ?1 G% Y0 u! g( G问题的提示如下:: T; r( a8 j# L- z3 O! c) W+ n

5 v; d* V& E" ?! p9 `error while turtle 50 running OF in procedure DO-BUSINESS
" w7 K( L- Y: m2 H) @  called by procedure GO
( V1 K. p8 U! V, r6 LOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 k# c! P0 m4 {
(halted running of go)0 k+ }4 D" w; X! e1 j  ]6 }, H
/ Z& f! a6 k6 G1 ^) {# N( w: r  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~~! V( w& |; R- H: k" L
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8 ^' {' j! Z2 i. o. `
globals[
) T/ @  s, |3 Uxmax
2 u  k# B. N! Q# I  q* Nymax7 K0 n& @" A+ ]( W2 s: P
global-reputation-list
, r! S4 H0 Y- Y1 D1 F6 j6 `  G% W( o1 B- v; W' a5 C+ g' ~
;;
每一个turtle的全局声誉都存在此LIST
8 G6 \9 r3 R" I- k  ]3 }credibility-list
& e% y+ e' f  d4 D;;
每一个turtle的评价可信度% I+ W0 u) _! d, e3 w4 V# x) o
honest-service
# v! U6 u6 a8 x! F3 Wunhonest-service
# L' F3 \( h7 b" y9 y! t' S5 woscillation" N( ~, {8 [- k% x% p. m1 u9 L
rand-dynamic- R% f0 n0 m* q0 i9 Z
]) j# E2 e9 j. \0 p) a0 C. L4 E

7 Y  R- j! ^4 a) C% r) J6 E2 C6 x3 l/ cturtles-own[5 ]3 ]: w: }' C5 R7 g) s) O
trade-record-all
+ j: q! T( I8 E! M( e+ d;;a list of lists,
trade-record-one组成
" Z9 M/ S- \0 P: A5 Y( E7 I2 etrade-record-one0 d8 \" i+ r; V2 D
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, F: n. ]) V" J* C. E
, T! U% h! S& _0 N3 }
;;[
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]]
; W. C! f- k& M' `3 o! K3 ntrade-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 L' X2 ^( B; o: @; I: t6 i9 X
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list+ h$ J& c; F4 g% W! Y5 a6 D
neighbor-total, o) X$ e3 y- W/ B
;;
记录该turtle的邻居节点的数目
, t4 _( F1 W9 X. v" L5 Etrade-time
/ d% b% K# s4 X;;
当前发生交易的turtle的交易时间. O, o9 l8 V3 M7 b9 z9 C
appraise-give( L7 f$ n# W6 m
;;
当前发生交易时给出的评价
2 d6 A7 M5 ]0 F4 d9 P/ _1 Eappraise-receive
0 q( F: g  b0 g0 N7 E5 z- _! G$ N;;
当前发生交易时收到的评价
5 [/ p7 f- G, @' n' s& b, lappraise-time' Q9 i0 M( \4 e
;;
当前发生交易时的评价时间* s1 n+ N9 Y/ \2 l6 [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
  V+ q/ ?6 i* F' V' |* Ytrade-times-total
! l: H+ a) u, [& _7 k;;
与当前turtle的交易总次数! O- }" a, ?  l$ }$ }0 o$ ^$ p& g
trade-money-total
% B4 S7 x' r/ u* C;;
与当前turtle的交易总金额0 e+ Q! p; q+ \; ~5 A7 m
local-reputation
6 c# V6 Q" ^- C% ~$ j# t8 _  Wglobal-reputation" M9 w1 y4 S2 G, z( v! T# T* n1 J, s
credibility
1 D5 I& O$ ~; ?& ~* |: n: |;;
评价可信度,每次交易后都需要更新
" V" p" r$ _- C* Icredibility-all4 n4 l) B2 Z4 I! M7 k
;;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* w: }" P! M9 S, f

9 w! j- v. J$ ~( T2 C;;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) X9 N* [) e8 X4 B1 O
credibility-one
" I7 K% ~9 h# ^+ c7 q: e3 ~8 A6 B;;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
: `2 m- [+ m" n/ D# aglobal-proportion
3 [. g" E, k: s( q, Ycustomer
  |; \) G6 }8 l. jcustomer-no
& V9 ?9 D1 K# q6 Gtrust-ok
1 A; @( ]2 f6 o7 O4 y8 ]1 Ftrade-record-one-len;;trade-record-one的长度. Y3 S8 G( g& V$ ]) x# `
]. ^( d6 ^6 J5 Q4 X
# E; u5 R6 y% ~3 g7 P
;;setup procedure0 G& f/ Y9 v; u7 A4 Y; f( M

1 u+ G( P) ^' u9 [3 wto setup
5 B  o" d1 D# W- |. G: M, \' O1 D% l' X7 }8 w) B- R. E1 ^
ca
6 }7 k4 x" C5 T5 {3 C  h; r
/ h( t0 p1 M) |) s9 l& E8 X2 o  q
initialize-settings

4 L3 F7 {( u9 A$ }8 w
2 I. X) {6 q8 L- m1 J" W) t* Jcrt people [setup-turtles]
  b- X) p2 N3 }  D

/ Y6 @" X8 v" M+ M& U+ a. Lreset-timer

5 i8 b, d* }4 q, C3 j$ T  H$ t6 c3 Y/ w  |# v1 o* {7 |0 X+ e0 ^
poll-class

* k  `/ R5 e# G$ i( [* o. X$ H0 @
9 z/ X# e. t3 v% Psetup-plots
; T7 K# t& T2 }2 c  v7 g, v6 o
, j2 N' P* L2 J2 |
do-plots
8 |' d5 y. d! j5 L
end
: S& _  ~8 w1 E% ~4 q. M$ i/ N) c6 e3 \" a* o
to initialize-settings+ s, X4 G# x5 ^, f

) j+ V3 T4 ]  l5 y' P9 ]/ Cset global-reputation-list []

& ~* z+ W7 [. ]3 C+ _" h$ P$ I1 q9 R
set credibility-list n-values people [0.5]
6 ]4 G) o: |5 E- b' J  A9 a- b

+ E) A  v$ s; Y" P7 hset honest-service 0

8 i7 ?1 k3 t2 j% l( w" Q! ]
  {6 l. `8 A/ L' {8 Nset unhonest-service 0

& }+ n1 Y* l2 E. a7 I. H: x6 n+ G0 V: Y
set oscillation 0
; f$ |" x$ x% |5 J# c- z/ X

9 J4 a7 P% ^! a& \* b/ k3 {set rand-dynamic 0
* g! v6 N; y) f+ ^
end
- D# N, ^2 I$ K. B  ?" r' }# H' ?' q  i- ^
to setup-turtles 4 j4 Y4 e1 {" i  q
set shape "person"& r( X! r5 W# X" _- }
setxy random-xcor random-ycor
; o! H) M0 z1 O; ]set trade-record-one []0 O+ ^1 B7 g2 M& p
. B3 X9 z+ e! y! m; U& ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
! x6 K8 ?, J& z/ L6 m' q, A
& F* D; E5 \* i% ^( o) {- K9 o/ K! r' |
set trade-record-current []
8 r2 [( s9 }' yset credibility-receive []
: f4 ^+ ^( O! K, `. M' o( Cset local-reputation 0.5
: Z( x7 o4 {# Bset neighbor-total 0" m& z, p0 T. H! Z; k1 w8 V6 T
set trade-times-total 0
1 @% k/ U9 c" Q; Q3 Sset trade-money-total 0
+ g( q( H' V+ A0 n% U9 C% }8 Tset customer nobody1 \/ X# y, a. o" \- p* f" `# T9 o
set credibility-all n-values people [creat-credibility]
+ e$ l0 y# d7 H" r" b% K+ i. ~set credibility n-values people [-1]4 _4 u' L3 `) ?8 ~( E" T: k
get-color( h" x- j9 ?+ w

( Q- F% W/ {( t) bend
9 t+ M) N! P8 X5 F5 V# H$ K( s* y# e( }% j" e$ C5 T3 {" {( V
to-report creat-credibility
3 [& v, Q+ m  r/ c# N2 j0 q+ K, f  ~report n-values people [0.5]: G, M2 H5 ~) R4 Q
end
" Q! v! C" ]9 ^( Y0 t$ z7 E3 w7 p/ {: H4 o( U" `' Q0 n
to setup-plots* _1 t8 t$ y; B( o( N! |

% ]4 o' i; y* A" I! rset xmax 30
6 c: a. N" C$ L9 J
0 `* n; _) j8 c% [/ |# {: b
set ymax 1.0
% |6 s/ e5 c1 C, Q, x# F
- F8 |2 A% K5 g3 ^3 H
clear-all-plots

5 ~  f* s6 |# W; g+ q9 y
' i2 w% b7 h+ Osetup-plot1
+ R8 {9 ~! D" O6 U+ n. Y

4 I& D0 [6 }" q  Lsetup-plot2
! g8 v- R3 M/ ^

3 G) j, l) j. l; q# Nsetup-plot3
  i. k0 {! m+ x, C
end2 D0 u4 U0 q5 {; x& Q8 G* K

4 v) {8 h5 r+ H* c: C/ D4 R* x2 I;;run time procedures
& J! M2 ~0 V. O) T
8 s) D+ \5 Q: }: Uto go3 ^0 e2 b) c, W8 U4 ~; S

7 L, w7 f. r7 e# h, |+ Fask turtles [do-business]
- x# C+ v# A! ^2 l, p$ N
end
$ R1 Q2 M: M/ d( Q9 u7 L0 H8 w2 i+ Y3 R4 ^* ?- |
to do-business   A5 T  e* G) C" N) c+ J+ c/ [* v1 \

# g3 m, T8 h8 r  E1 H+ U; e  A3 }- H! ?/ `( s, \  K. Q: c) O( {
rt random 360
# a( j$ q+ L6 @3 Q  a
+ ]& `2 n1 J- C' a6 x1 t$ x# z* y
fd 1
6 C, d% c4 }( @) s1 ~
! g6 j  Z/ D2 |/ r! m, u$ G  V
ifelse(other turtles-here != nobody)[
1 d, S( ~0 }! h) G' D

0 @" G  V& k# C" W; Uset customer one-of other turtles-here
! C- T* B# y) G3 F2 r& J

; ^+ m$ R: @4 e3 m;; set [customer] of customer myself
) x6 m' M! Q) I9 n

8 Q7 t: X: w( F0 [set [trade-record-one] of self item (([who] of customer) - 1)
+ ~% C4 m" k$ A  ?# }0 T- O1 ^[trade-record-all]of self
$ n) y; u! ?" X: B! r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* p- H: v3 @  h) @' J- i0 d) l2 |; N- s; ]: }2 @7 s
set [trade-record-one] of customer item (([who] of self) - 1)9 D. \5 [/ u! e8 m6 i( M8 @# \
[trade-record-all]of customer

$ b$ G4 b. X3 M( \& O2 w; N7 O. E# w- R
set [trade-record-one-len] of self length [trade-record-one] of self
5 X# w6 A7 X7 a3 N$ p
# Y; o- O. C/ l
set trade-record-current( list (timer) (random money-upper-limit))

! ]: N& T4 T) h+ j4 q) c
" N  Q+ `% Z! l4 |* ^! B  Lask self [do-trust]2 u9 U. k3 c1 `2 _
;;
先求ij的信任度
  V& y- z; s+ G, ^' M3 K2 m! W) G. L5 }5 f6 W6 R. S% u- G& w8 L# a  c
if ([trust-ok] of self)
: e2 b/ g/ n8 y2 t7 t9 S  z% w;;
根据ij的信任度来决定是否与j进行交易[$ B& W) N' b8 ~8 |
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: \( j4 ?9 G4 U. d2 x& I% U  p, h& I6 n  u; A* W! S% R" s
[

/ ~5 R0 D/ _% G  A- B. H4 Z# c  G6 K
do-trade
3 X* e$ Z5 X: f* N

* ~# V9 k! X# I- c3 H! U* x. `- Yupdate-credibility-ijl
, }& W+ G7 x: d- K( q$ D* u+ \$ R6 d) U* }
2 f) k) l7 w' A. F! X
update-credibility-list
; s* C3 N; z3 T4 h
5 h/ {& T# l& l

1 K- d# M6 K0 nupdate-global-reputation-list
& o5 A: j/ b( a( y2 p: `, L

1 s# W7 y" U0 Dpoll-class

9 G+ L6 e8 r2 a4 ^; |2 {% Q2 f2 Z6 g! k$ T7 i; |/ b5 T
get-color
5 U) H7 n" k' }* k! X- h, D1 ~2 P

  ^) t6 h# P0 z8 F) L]]
! Z7 E; s; h% }' m, J" ]1 E9 {+ W3 A8 X, A: c
;;
如果所得的信任度满足条件,则进行交易
- Y/ Q" M* o$ ~7 }( j, _$ V2 F
: V1 u4 D& ^3 F[

5 [' [* }5 D6 ^" B& k
# c5 D- c3 A1 L+ |rt random 360
& e" E1 s1 q0 C4 G# z

( n; g- V& i0 l/ ?! Xfd 1

! B1 ^* T* l5 @4 r9 \& C# u9 H4 E
: I: R$ o% t  d+ g- ?]

- m8 l6 E- ]6 M+ A% C. H- L' H
( q- V3 r; L2 [; w. i% @. yend
0 `; O3 F5 Z. t9 a, I$ j3 O- Y4 B
) B. {& A) k1 s% J0 y
to do-trust 6 ]+ x! g0 J- w/ A% L: u  {2 u5 E% G
set trust-ok False
/ c/ o. h) l" ^; k! {9 u9 u6 r- N/ ~7 G5 ~. u

) x; a7 `: g- J6 ^9 ?+ ?" y7 glet max-trade-times 0
8 y* L/ l7 M7 J3 X% Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, Z5 z! f( j# _  R" blet max-trade-money 01 T' S, }6 m: j* e9 w& T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 s, z! L, M3 b; D/ s8 H* p  Ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 w) ]% M& G+ C! Y* b" \5 _3 `2 O& ^" `7 M

8 [) U$ k& g  [" S# Iget-global-proportion
) \9 U* p3 F5 N& d& O. ]let trust-value" ~1 `+ J" p$ H) ~
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

' B* U. a" Q( ]. t% G9 w8 ^if(trust-value > trade-trust-value)1 D: y# z0 o7 [$ L
[set trust-ok true]
, ?' U) k+ }% Z! S& Send- e+ f1 r9 M6 f1 Y- j$ f
0 k$ n4 {! V2 i0 P! f
to get-global-proportion. e* N2 J" c% B; }3 q, G' H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 F! J- j% A1 \! P1 F7 Y  W[set global-proportion 0]& x7 a( L  _2 W! O9 Y
[let i 0! q- J! V+ T2 ?3 K, q7 m  y; O
let sum-money 0
7 Y6 H. U9 d! o  f' m0 v4 ~while[ i < people]
2 O/ ~6 H& c% J9 C[7 m. Q+ b7 R; G8 _# i
if( length (item i
4 h: |) }% m, ~[trade-record-all] of customer) > 3 )
! J6 _1 k3 ?! V& o
[
! Z% B$ s. O$ B( dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))( A9 \/ R2 q5 V
]
# R4 E+ a8 j# S2 _]+ ~, [  h+ G1 O6 m# j$ |
let j 08 H+ z6 o' l1 e/ s# _7 c8 i9 H9 u8 y
let note 0! m  ]2 H( W$ N8 a; y( o
while[ j < people]
  w0 Y6 C2 q9 ~1 Y, d[
: I4 z$ x) y/ L2 Kif( length (item i3 S4 w7 z7 o$ T% d
[trade-record-all] of customer) > 3 )

2 S4 @6 S8 @/ O# y. P[  j6 J: R4 q8 p! C; R
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 n# ]/ q# C$ i4 ^/ ?
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; X6 R; ]2 U. ^+ I2 R. r[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]# D; z/ a! x2 N% C1 l$ E
]
+ _& l* J- z; P5 R, N6 x1 W]
- U! u" t; P7 q5 Z: C2 X7 `3 Zset global-proportion note$ j- D) r+ e  v( l4 {! S% y3 i
], P' m9 Q. A3 [& f9 g
end6 P2 z, o$ I' N' Y& x- Z
9 w' s* U' G  Y/ c6 W) Y6 x9 N
to do-trade
* A, m4 H6 i: Z;;
这个过程实际上是给双方作出评价的过程9 G0 k* {% Y' _# L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, H; r3 G* @8 z: e, H+ U& yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( i! ]3 t8 b( A' V( @' ]- E0 V& _set trade-record-current lput(timer) trade-record-current
9 n; R. Q. u6 O0 o( S;;
评价时间. b! U7 c: ?' V  s9 J
ask myself [
. d; p! M/ u% D1 g  j" A( j1 ]& Mupdate-local-reputation
/ n. T- R; F. I+ v) {" q( U9 v" W  Kset trade-record-current lput([local-reputation] of myself) trade-record-current
, I1 V% i% I) v  Z/ N1 g3 c" ?5 {]1 ]% i, v; G( L) z8 N; u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 J7 M* {7 {* I& x' E9 j
;;
将此次交易的记录加入到trade-record-one
: J) h$ D) O, M" P! f0 kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 T8 I, z/ q( o2 ^  n- J  ^& blet note (item 2 trade-record-current )& Z2 @" I6 H0 m2 d& q- _+ V
set trade-record-current
- R2 i/ u/ B3 g& O  n/ D& F( Z(replace-item 2 trade-record-current (item 3 trade-record-current))

9 ]4 i0 S  X! c1 Rset trade-record-current1 j8 H3 k  J, Q0 N
(replace-item 3 trade-record-current note)5 H( V# T* H# c* U' F

3 P* T/ Q% E, n! Y' Y* m9 Z
" Y2 P( @4 K: J3 C) o+ w, C
ask customer [
9 N. `/ h* t9 z8 T4 _9 {1 Q3 d6 mupdate-local-reputation' Z( u/ I( L2 f( D
set trade-record-current
  Z, c& l8 z* v(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, c& u" M8 X0 e0 |; q]
8 U$ J# K" P3 @2 c. Y- G: o2 k) P& d  d9 ]' u

9 z% V& D7 V! Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ G2 t# T" q* w( o; L9 k

4 s' r! [2 k1 k, f+ I1 tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  t* j4 V/ o" L
;;
将此次交易的记录加入到customertrade-record-all
; F( V( w3 y! a3 B9 Nend
* I  o  [/ M) o$ X/ J; @# W# i
to update-local-reputation
! W# _, S" G$ c. v* i. e, P4 Wset [trade-record-one-len] of myself length [trade-record-one] of myself
! k( {% I# J3 \6 d& z* J" s% Q4 u: P1 t4 ?! z, h
3 p5 u" k9 x! i  H8 g( E4 D
;;if [trade-record-one-len] of myself > 3
0 ~5 @, \% H+ H8 z# Q! \
update-neighbor-total
: k5 q2 T3 @7 _- r- B+ ~0 N;;
更新邻居节点的数目,在此进行" |" D/ o5 d/ |+ m1 R! u+ `
let i 3
& X- g% j1 y! `- s  tlet sum-time 0
- Q  z- [% J) l) b, u. ]while[i < [trade-record-one-len] of myself]4 F: A2 a" T6 |+ B- c; S
[
" @7 Q9 u8 T/ Y7 w; u- o' Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. [' _  M, B! Y& `5 r. e( Uset i7 J, ^$ u# ~/ O" g. e- W4 f
( i + 1)
) [# Y! {  \5 y. ~2 D0 ~/ ]
]* M8 F8 N; e+ U% c3 i9 x0 z
let j 3& A0 f5 k. z5 e9 \# ~/ n8 t( A
let sum-money 08 R1 P4 }9 o! j8 f- [
while[j < [trade-record-one-len] of myself]
/ S8 q! m$ U# |[9 D; ]8 I  i# b8 `3 ^/ p7 s- q+ D. R7 n
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)
" n3 n) v0 }! n- y/ _. q' W  h1 Vset j
  c- t; O( a1 E  x; a( j + 1)

" m3 F* }7 q8 T' Y]% R* F  r8 d' R# u/ j* }% {1 R
let k 34 M/ o* u) Y6 p& H9 s
let power 0) c8 {- l+ `4 F5 Q1 _/ [
let local 0
3 D: g$ k' ]. {9 N7 wwhile [k <[trade-record-one-len] of myself]: f! G2 Y9 O" y) y& L0 B
[9 y  q) d  P* p5 \/ y
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) + u# g+ A# m  O
set k (k + 1); W7 S3 D' L/ v3 S
]
- u* `6 W3 A* v3 I8 V! fset [local-reputation] of myself (local)) t4 w$ l* }8 A! W1 h4 a- ]( c( g* g: E
end4 k. u, c$ _2 k0 X

$ J; [3 \, G: C$ |. n" Zto update-neighbor-total! v1 L: o% j9 W
9 W0 T5 {( U* T1 z
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 t  c. l; U. r5 x/ i: ~" t5 c
; f4 B- \; M& C" p: I& |9 Y) C) Y

( |- e% D% L5 J9 s4 A' E' pend7 [/ |( h9 H, V& B+ f, z
# }) ?  S/ a' I2 a" X' U  o1 k
to update-credibility-ijl & M3 e2 G9 p$ g
6 ~6 u) ]' l2 C9 x9 x
;;
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。
  J2 \( d; d8 w! Wlet l 0
: e/ z3 q5 r: U; P& Cwhile[ l < people ]
! I/ i: o. x" u" z. D# I* \! n; _;;
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$ ]* N+ s% x: N+ I4 q8 [
[8 m: v( o9 i$ J3 Y, I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, p* W1 {4 S( u2 u' B+ _* fif (trade-record-one-j-l-len > 3)$ I( d. D& V. |, v- z
[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
. r: }/ y- ]% r* n* wlet i 3: y& p. @! a: H4 p
let sum-time 0' X( y0 ]% b$ [* p
while[i < trade-record-one-len]
1 z8 z! x3 N2 a. x[: f: |' f7 |' J. @, w. q! i; D4 l
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ d2 Y# p  _' r$ X! V9 V" Cset i% R) x7 ?+ P" ^
( i + 1)

: q2 e$ R4 m2 u]
4 l% _  ?* G8 u0 B! _let credibility-i-j-l 09 Z7 L, \: k  R
;;i
评价(jjl的评价)
( `: u: p- V5 K) \  u1 Nlet j 39 o' Q( Y; e% |% v, X7 x3 ~
let k 4
, ?( K7 d8 G) M7 O6 Xwhile[j < trade-record-one-len]3 `! c  t* k# |
[
4 }" o3 m  L. h+ K2 Xwhile [((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 r6 V0 R6 s. E6 Rset 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)
5 J$ p3 l. g% E4 r* R) K% c( p% wset j" i  x: [0 s2 p$ h4 {, _
( j + 1)
- Y  z6 ~) p. W- G, d0 f! _! r
]! f4 Y8 M3 b2 u) O
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 ))7 i' p/ |- C7 k: X+ A

3 q. A3 _; B' J. c, Q' D* X& c( f
+ c  ^# M# H5 \" R
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) n( w: _9 B! f& d: {8 R
;;
及时更新il的评价质量的评价8 j: x6 f4 L3 `2 i
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 c: [$ J' H8 z' V, fset l (l + 1)9 y% T# B) n% z) q* F. \& ~
]
- ?6 Y4 S4 U3 s: j) mend7 r5 N9 G7 S2 q& c: m. x- X
7 g% K- [5 v9 ?/ S, Y* Y
to update-credibility-list+ i5 i' F  ~- S% Q
let i 0$ E. d5 M" H) V/ X+ \
while[i < people]
% j" ?. [4 h9 F! d2 Y8 v! \! b[
  B- J9 x* B8 h& J( w. n; ~let j 0
' k, e( }3 }+ A9 b) ulet note 0
* q, J$ N$ A, |' @1 f3 ]6 v9 Blet k 0) a5 h+ Y( K& @: i
;;
计作出过评价的邻居节点的数目5 G" x6 A) P& p1 _3 N
while[j < people]" o! f1 [! f7 T% g! y3 x
[
8 R3 g" i) Q5 I( Y) V4 A" |1 T# \if (item j( [credibility] of turtle (i + 1)) != -1)
9 l" I( T! |3 q, n;;
判断是否给本turtle的评价质量做出过评价的节点
0 l$ C$ l( T4 ~3 [, S$ n  N[set note (note + item j ([credibility]of turtle (i + 1)))/ ~5 j- s: v' D" E  G
;;*(exp (-(people - 2)))/(people - 2))]
3 b/ ~2 t. O3 {' K+ z" l
set k (k + 1)
8 E- O- v8 F. M9 i% r]
4 j$ k9 G2 F8 }1 W, Cset j (j + 1)1 q: \, A" Q* Y+ T$ _
]
% }3 C; W: q6 Dset note (note *(exp (- (1 / k)))/ k)
$ G. H3 I% V$ p: ~set credibility-list (replace-item i credibility-list note)
$ G$ b1 }7 ]4 w6 t3 e. [* Jset i (i + 1)+ m  }9 w& z. p0 |% ^! h
]
; z1 }; E  k% U* \4 z. t; F2 Yend
* Y" U) g# `/ ?8 S; \
1 f, W& k6 T. A9 Y! E9 ~5 r5 Kto update-global-reputation-list0 @0 n% \! d- I4 V5 j  W
let j 0
+ S; M( Z7 `; B& a: J# \while[j < people]) L2 e9 N4 C+ z8 H( T: X( g+ I
[
% K" O) |) X% m5 Glet new 0
6 c  [: i6 ^, _8 m" M* a$ M3 z;;
暂存新的一个全局声誉
9 O( @# u9 Z0 q" z& J4 v5 h1 c" I( mlet i 0
1 K0 q0 b7 a$ |/ K: mlet sum-money 0: @6 Z. D  ~( J4 H* \
let credibility-money 08 K  Z; G3 _0 a
while [i < people]
# p* f, ?) L8 v[
) m! t$ U" A; C, m/ iset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 M; c8 n; ?9 Y$ D( {% r& dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& v& R# p* m% Iset i (i + 1)
7 S3 F  K. G6 C5 J1 u/ u$ d4 v]! Y" A& D/ y3 N1 S2 q
let k 05 B7 R' ?/ ^  Z4 K! M5 @  c
let new1 0
& V3 ^: F% C  e, K9 i5 w  Twhile [k < people]
- _% p6 @6 k$ n' T' v7 E. W" |[
% l- D) X& i  |: cset 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)
( {' }9 o" ?/ l  H: nset k (k + 1)$ R% q, Y* A: {
]
, o+ o; ?7 D: f) v5 g. Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % I4 O' S; F: l1 g5 j: Q
set global-reputation-list (replace-item j global-reputation-list new)
6 r. s  e+ `( C. {) m+ L. C) Kset j (j + 1)
( W0 W0 C# g- _]+ x' C6 A" f, S, M- Y" X; `7 N4 E5 q3 I
end
9 |2 o: F6 C& ?# _; R1 v% A$ W3 Y( y# ~' b% D% v
; |- I8 Z5 g5 R" S1 f2 G

, I4 Z3 o  ?! d4 Eto get-color
$ \# l9 e: J2 c
! N1 ]; Y) @8 m# C0 {set color blue
9 ~: n- P0 B5 u$ `) s; ]
end5 ^) P. A' Y* \4 O9 D6 J' q6 [/ |3 S
, p$ ^$ n0 O" g" o6 j# f% b" v
to poll-class
. b/ e  v3 m" L# W1 m, d' F, Send
  |; L! K0 I4 M3 P- b  k, x% y7 h" ?- K. `) n6 x1 R' [
to setup-plot1. P$ k# D9 l  F. a

. P  K' ]1 j, L+ P8 Y+ z, S9 Nset-current-plot "Trends-of-Local-reputation"
3 R7 s" O8 o. k8 s7 Z
! A1 u" {" r3 f
set-plot-x-range 0 xmax

3 S9 a9 m. E  J* P4 }
/ k9 i. r# M( O8 c# Cset-plot-y-range 0.0 ymax
7 O! g) ~- J8 j
end3 E; q0 |9 ^: R$ H* P
# A+ I5 G( @, F0 V5 L5 x
to setup-plot2
: b+ Z! |/ X+ f* l) o5 H$ H. o, F
- M3 C- Q5 c" X- C3 qset-current-plot "Trends-of-global-reputation"
! u! ]' J) z3 S  |7 _
6 t2 p( u* d5 ~3 }0 K) {
set-plot-x-range 0 xmax

2 X( e7 p7 e* S1 b: e1 v- C+ p( T" D7 n
set-plot-y-range 0.0 ymax

0 t* l6 E, K0 B( G( O' u! r3 rend9 |: N* A% e9 L3 P' o
: p) @4 `, p& E" f3 x; n- i
to setup-plot3/ V; S! d% M. g& m# R9 R7 t

* F$ N$ Y; M4 E; {/ t9 f6 {0 kset-current-plot "Trends-of-credibility"
+ D  k. {! d2 q5 n" H

7 e( N+ o  c' Dset-plot-x-range 0 xmax

7 R) ^( f1 ]4 j: M5 y" Q8 s. L' E$ ^- [+ C5 n; N
set-plot-y-range 0.0 ymax

, ^0 v1 x5 q4 b: Wend) C9 i5 ~4 O/ `9 W, R8 Y9 ?

) l5 b2 I5 r; l& Yto do-plots- G& U4 r  j" z  Q0 k
set-current-plot "Trends-of-Local-reputation"$ J$ E! ^3 d6 m* v2 F, ~
set-current-plot-pen "Honest service"
% U7 T: K* I  |9 j9 Vend
* P3 o  m5 m  [4 \" V( w0 Q: P0 K9 x1 [/ [( i5 s
[ 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.4 q$ x$ t, }0 F% i9 [+ L, I+ x" t% b
- [6 F- ~0 U. e
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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, 2026-7-31 21:00 , Processed in 0.024860 second(s), 18 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表