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: 15980|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:/ r0 Y, f5 U  u/ P
to do-business % Q4 k* e; v- Y0 S5 J$ s( h
rt random 360# n1 z  H! A* B3 n7 F
fd 1, |# Y# B1 `; |, U8 v; B
ifelse(other turtles-here != nobody)[
( {& j8 X4 N  ~: q   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.
$ L5 N, C/ g5 M" d9 X2 y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % G% L1 I5 x* s$ a8 u& j
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 i6 C! \( k$ `) ^# J
   set [trade-record-one-len] of self length [trade-record-one] of self
" n  I6 b" O1 m0 `4 l   set trade-record-current( list (timer) (random money-upper-limit))
2 Q+ t) Y/ t7 @3 B$ ~
4 E: ?) h7 A* u1 o4 }1 t问题的提示如下:7 }8 }5 o+ A' }* f+ |
1 Q, |0 T& B& B
error while turtle 50 running OF in procedure DO-BUSINESS( I8 ]! }$ K) U+ I, E/ `& j4 Z
  called by procedure GO  H& q3 r5 J* B9 |* K
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ G8 p, E1 r/ J8 _# C
(halted running of go)  A% v+ I; V0 y7 ^$ \
$ ?4 e/ ^  m( D& r) c4 B4 }/ z
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
8 q: B2 V" r# m& B% X) \8 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.

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" G. P9 G$ Z" a; z" p5 o2 S. |
globals[+ |% y  M6 O# [( y. n
xmax8 ?' ?5 |9 ^# p/ j
ymax
6 }, E; e/ L, @" {! }global-reputation-list1 m' C# m. M) s0 W: H
; @* ]" D5 A9 w$ T, Z. ~
;;
每一个turtle的全局声誉都存在此LIST- O3 ^- K2 J5 j- q  y/ T2 o% U0 @
credibility-list4 x4 I; D6 z5 P' w- s3 O4 g' a
;;
每一个turtle的评价可信度
( n% Q6 o2 z  f# `honest-service% o6 A. T5 j5 Z  _: l
unhonest-service
- ]' f! x+ V. i! ]$ X$ W1 ]oscillation- p& e3 R; M( M2 Q) ^. r: a
rand-dynamic
% N& q3 B9 z% V0 A6 C]0 q5 Q! }2 p" \( _: q8 Q
: p" p+ g0 V2 R" C& y# ^, n  d1 R
turtles-own[3 c& p9 c% |( Q8 Q9 c
trade-record-all
0 n" m5 D) f2 k  X* v;;a list of lists,
trade-record-one组成) l: u! ?! M3 p3 X! r+ e, n3 A  q
trade-record-one) `1 C$ M" M0 y5 @
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 d, [  `/ @4 i+ T2 t# E1 |
. B3 q3 Q3 y6 O2 e
;;[
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]]2 e/ L8 e; u0 D. P" ~: Y$ S6 v* z
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]4 O1 u. x2 A* J
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list5 ^+ ?$ |* d5 B" X  ^* @6 j
neighbor-total) N# }# f/ O* n  n2 g
;;
记录该turtle的邻居节点的数目  i5 k& c: h- e5 u4 U
trade-time$ w# K  y9 q' \5 a" C
;;
当前发生交易的turtle的交易时间
8 U! s0 Y& |% z. p4 i, l4 F' Mappraise-give6 h) ?' f) }: h
;;
当前发生交易时给出的评价
% Q% S+ @; c6 s( W5 |appraise-receive
. F4 l- O) |' `, ?;;
当前发生交易时收到的评价
7 T- k1 s3 m, i$ k/ ]3 J  p9 K& W% oappraise-time6 B4 C7 y" d2 F
;;
当前发生交易时的评价时间, W1 p% L# x! Z" `
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' B, [6 ?- t  d* d* e- D
trade-times-total
9 y( ]8 B( Q) {, T( v$ n9 y* E5 j;;
与当前turtle的交易总次数
" `9 u$ ?& u$ _( L$ wtrade-money-total+ e  I! b) t( R( m6 [/ J
;;
与当前turtle的交易总金额5 R, m! ]  o! p
local-reputation/ x) r/ K3 w# H8 t0 J! l3 ^7 j7 F
global-reputation
" q# u6 X; B: Q# y  \- scredibility
1 I" H  u, ?  F* ^! _) u' ];;
评价可信度,每次交易后都需要更新$ J( @% |4 `1 h& D3 O
credibility-all! E( M% w: j7 A) M/ ~3 v) X
;;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
, k- a. }. l1 h$ R5 D( _% r- B- V$ j
8 j1 a5 o9 C9 g3 D4 t! ~, k- u;;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( X7 K% X) |! V7 s8 m' u! B
credibility-one
. m" v% V( U# n;;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 Z  Q3 F! p) ~global-proportion
" C( L- j& v' a( K4 E6 pcustomer
7 o: z3 r2 V& X; [$ _, Ccustomer-no
: B  e: [  ?- [8 e& }& ]trust-ok
1 }6 t" z# b9 k* L  o1 Y5 mtrade-record-one-len;;trade-record-one的长度
  K( P- e8 K  C; d]* y8 p6 U# b  y0 }- i8 [& |1 i) G3 P

$ B% M# {; i* h/ s5 Y' l" {;;setup procedure
$ n3 ]: e0 O6 ^3 d, J* `- y3 L7 S5 f9 r/ n+ `
to setup  K' y; T# @5 f

8 g7 N5 ?, h' J8 U& _, |ca

1 C4 v; e( O4 C/ X4 R/ s+ f
0 |% Z( ^- v& k8 v  @* {; ninitialize-settings

% D8 z& u5 \8 q, k
9 g: q! a: ]! Y" E9 @& gcrt people [setup-turtles]
' _$ c& z" n5 D+ T7 C4 y: W; l) F$ t

) p  a" A% N4 N4 areset-timer

3 S) y5 |7 o5 |! H- e. R* k6 P* ~* f
poll-class

2 V- p) h9 M+ ~0 o  s
/ ^; R* ~( ?! ^0 u: Usetup-plots

' m3 L% L& G+ W  T  I/ G! W' x4 N! i3 Q0 C: W  r1 Y
do-plots

8 D8 X' F( g6 U  v$ x8 ]end
, z" q& k% ?" u) m" s& R. M/ \8 ^& t! J8 u# ^' b
to initialize-settings# w. F+ [% w3 J6 M$ Z
; F3 J8 z; K( K! f) _
set global-reputation-list []

. k  E1 w1 [) i  d3 x1 S/ V! E
! }0 |9 t2 D1 s' [8 x7 |5 Qset credibility-list n-values people [0.5]

7 w1 \! M; s9 a% I1 O' F7 [, ~6 S& L0 {- n0 j
set honest-service 0

* \0 F3 M( b  J3 O2 x( M1 P) I; V. _, G& F! s" l) A8 }* u
set unhonest-service 0
+ b- ?8 g0 K' V" N* u- @
6 S: a6 i( ~5 w
set oscillation 0
2 f, a+ N+ n( j: i/ K; G7 w
2 G; ?9 e" x- d& d. `5 F1 Z
set rand-dynamic 0
4 w4 l3 h! d7 p2 i  M+ R6 M
end- Z# {; r3 m% z5 Z7 ~& O' {, ^# ?6 ^
, ~/ G1 @! ~- M! N% m: g
to setup-turtles % O$ j) k+ Q  ?+ W0 v* `' }7 z
set shape "person"* Q6 u8 y9 J$ l6 U) y2 b
setxy random-xcor random-ycor- P/ K3 u2 t2 W/ p+ E( g' e, b, e' W9 ]1 r
set trade-record-one []) ]1 ^$ Y% |, z

* r+ f( x5 d8 V: J8 `. c+ Q( xset trade-record-all n-values people [(list (? + 1) 0 0)]
$ t; x$ w$ u/ J9 r% m; D) {: `
  |6 }5 \, L4 }: ]1 D9 p# |+ p* A
set trade-record-current []
2 X2 i- q9 \$ Z, R& R8 }- pset credibility-receive []
( }# }* t2 N4 a) Y5 Pset local-reputation 0.5$ K' }+ i7 V* c+ _- s) }6 z
set neighbor-total 0
5 \; M) K, U) Xset trade-times-total 0  A  U$ x7 T8 [) R3 d1 v& i
set trade-money-total 0& k" w! U2 E9 B
set customer nobody
: t" P' W9 Q' K& T5 Aset credibility-all n-values people [creat-credibility]
% i3 O5 `) {7 Zset credibility n-values people [-1]
9 _. [2 t9 V$ J& T& g2 pget-color
8 f5 {& e, x+ }' n
6 ?" `8 V. ^& h7 N) T9 \
end
. @0 A. a) k5 L+ K2 U. |( a- d! z! ]4 N& n
to-report creat-credibility
$ A3 l  U; n) r- @8 h* ^report n-values people [0.5]
+ G  L" V5 T1 @6 ?* I) Bend
+ a, o- G7 N" l7 i
6 q6 Q) j* r2 e0 O  ]) P" hto setup-plots7 z  X' M* x/ O, v; g) z! P

3 J) l9 {6 R, h' P( Pset xmax 30

, D5 M) X" Q5 ^3 P
! b, r- ^, `8 U6 {set ymax 1.0
3 Q( M3 G) `, c
: M( q: N! X4 D) f( W( R
clear-all-plots

0 O6 @5 K4 _9 P6 l$ v
1 C% |: G' o7 R3 f- E3 X/ o+ E- g9 Wsetup-plot1
) H; B( o5 }3 d4 x: x9 q/ r
& W/ D6 I  N2 \9 R2 E
setup-plot2

6 ?2 ], Z! h) |1 P, {
- g' N4 {! J( Gsetup-plot3
0 L  S, m+ r0 [8 H
end
! p+ y2 v: b5 V
7 F) V( u. Q  |% ?/ W) _1 u1 M;;run time procedures8 B" j4 P8 P: \/ M- J) B: ~
0 j! T' g' }( G$ J" g8 a
to go
4 G' b. T% J. y* ~0 _8 m
- k9 v% z- q' T. Task turtles [do-business]
5 J! H# f7 T& V5 y9 v# `: l
end
- G& s+ v3 z$ a2 g8 g9 G
. g- ?: c- p, M" x, gto do-business : k  R# |$ A; @3 j. y

* g4 P  m3 l5 w; G  y3 y3 c0 H/ {6 u9 K6 N+ W
rt random 360

7 n1 t: F6 ^' x; H% K" C  u5 f. ]0 v7 \0 r" M: u! N0 T& @% C  [
fd 1
0 X3 u, y7 H8 Z
2 I1 u$ g/ q; f4 M1 \+ A$ {
ifelse(other turtles-here != nobody)[
7 i. ~3 B5 ^: J+ b% j8 m
* R  F4 H9 C& k) E8 R
set customer one-of other turtles-here
5 z! J" w  Y8 J! p

$ p8 q" S) H' v5 f7 P! U* |;; set [customer] of customer myself

: J4 ?( ?, d0 z+ O9 r
: J9 C8 s: n( _, {' u( C. o/ Gset [trade-record-one] of self item (([who] of customer) - 1)
$ d6 i2 l) h% [& z8 s[trade-record-all]of self
  `; V, _7 P" H5 ]$ M;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: b# \, X3 ^& q9 e' S! y( y% `+ ]5 W
! ?; B; j: `! {set [trade-record-one] of customer item (([who] of self) - 1)2 V/ ]% o2 j6 M: A
[trade-record-all]of customer

2 n$ c7 p* r+ z% v
4 u" |7 \1 q( [set [trade-record-one-len] of self length [trade-record-one] of self
+ w5 k# Z8 y4 L! O: s

7 w( j; ~; E" p/ M: V$ u$ k, h5 [7 cset trade-record-current( list (timer) (random money-upper-limit))
9 \7 c& l% L% Z) x/ _/ ~

) _$ n" X& q* P& nask self [do-trust]6 ?' x( H' D* k" A
;;
先求ij的信任度
* T5 r* N4 H# ~, N' p$ H* `
1 m2 t, l' P% |" j- A) Eif ([trust-ok] of self)& E% \- L7 G, n$ E6 J$ s& u  Z
;;
根据ij的信任度来决定是否与j进行交易[; A' j1 f. g: W' o" x: w$ i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& n5 `; X7 }' Q8 b) U8 o2 j4 G

( A- [& o0 E& I, a# ~[

! [. R( l# K! I, Y! E( E  K1 n0 a4 B0 c; a3 z
do-trade

  P8 U+ T# y8 r, F2 z: ?$ O4 p% w% q+ |
update-credibility-ijl
. j% D& t0 z" c$ x6 C7 m  C; B

+ E, s3 o! ^  ?$ q7 \2 hupdate-credibility-list; R- q4 z$ Z, `9 S: u

. d) ?& e! f  b8 R4 w* N# X/ ?* l9 E3 d9 {9 |: c7 c
update-global-reputation-list
! `/ J- E* \4 C

6 p0 @4 o/ |5 z- b! N: T- _' Q$ O' Z/ Opoll-class
5 R: O) d" i7 N( T& X
$ Q) T" J! V& K: }$ G; ?
get-color
& z- }% x7 w' o# j3 a

4 H1 }, ]5 H7 ?2 i8 Y]], Q% z2 O7 Z) s- s* w

  v6 a5 T/ X/ b;;
如果所得的信任度满足条件,则进行交易
5 `3 k5 o. m0 P7 \* s9 t
6 d9 Z" V5 S( E[
  }* b0 t$ r! ?4 I" V: Q

( m0 m% R3 H6 v, l1 e9 V) B2 Irt random 360
7 G" t; V5 N+ ]& i( y  N

4 q) ]% P, s( nfd 1
1 q: Q' j8 M/ C& R# z0 e

7 E3 M# F- g7 G! []

4 B4 E2 Z; b: R; W# A: m& S& R! x9 b* F0 O- I7 c
end

, x( e7 @" p- L/ s6 i# ]8 Q, ~8 w3 ~( b0 i' t8 }
to do-trust 5 f' N2 p/ \9 S2 ^2 b" Y1 G
set trust-ok False1 o! |" _) p0 Y+ D8 H

6 T3 y6 }' K" y! g
: n) s2 F, d0 H; Y$ l& l' J
let max-trade-times 0
6 l( q1 ~; T0 M3 @$ Wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* [# j9 C4 |* l7 k4 Qlet max-trade-money 0) f2 c! l* P) z0 m  L5 r( \
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: p7 K" h; ~. e7 h; ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* ^) u% f; E: c5 [6 D- P
2 ^: k) h' E! P- S
8 S2 {) }1 B9 J& j& p2 o1 D! x3 P0 Y
get-global-proportion
% M0 y* h5 ^; _+ Rlet trust-value
6 J% P" o) g& O; a/ Xlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

' r7 j2 Y! @. [+ P* `& _- Z1 mif(trust-value > trade-trust-value)2 J/ d' B& x  m! c8 `
[set trust-ok true]
$ G2 q, c' l$ F% Iend
' m: ~: R3 a' P: s4 N# b, C) Z
+ b9 \! o% n& k9 R  ^to get-global-proportion# S& e* U7 J9 {( _7 a
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# `  q7 K) x  m& o1 h2 d9 }* K[set global-proportion 0]. @, c1 l( A. b: t' [1 ]; w
[let i 0+ f! I5 d( j8 ~
let sum-money 0* v2 R  X& U/ n4 _  K
while[ i < people]" n! u. L+ P1 J
[5 m, u" I5 f4 @: c
if( length (item i
* ~7 G3 `& t: K" [: i& P9 v/ I[trade-record-all] of customer) > 3 )
) r  g5 ~( E8 I2 J5 t; }
[* U, T  k2 h$ f9 y; E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" W; C# W& p& X$ R  {' U" \5 E! w
]9 |0 J4 C9 ], ?' c8 T" y
]
7 u$ b; D0 b- ]. Q; R! glet j 00 L# X4 D; c3 Q, C$ e, M. y# T
let note 0
+ |0 i  b- D! f0 p3 e& L6 swhile[ j < people]3 f1 A' \) g& A/ a- ~
[" ]6 M# {. J$ M$ W( E
if( length (item i
& y- d: w) Q+ W- l4 E! L* }[trade-record-all] of customer) > 3 )

# k, ~9 @2 G2 X5 E[
3 f) M; R$ j, E% J, Zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), G8 }6 z/ l( _# j, K, w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ x& v/ T8 O6 u5 w' ?% h1 l6 h
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ ^7 \2 a$ f( [: W* A4 F]5 t0 w' h, W# x* B) @
]' W# |0 c9 D- Z4 g; f
set global-proportion note# [( R4 f; k5 L
]
5 a- Q7 d* v8 V9 tend; q% K& X3 y. f  C% v; X! A, s! G
3 i0 ~0 v, ?) G, |0 O
to do-trade
* P" o! ?$ Q( ?( J1 e8 {;;
这个过程实际上是给双方作出评价的过程3 d; G4 ^1 n+ S+ r) [- F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& O) v( y0 V! ^2 `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* U1 C4 S; Z# l1 y% M5 O9 A  C
set trade-record-current lput(timer) trade-record-current8 g' I* x' ?) U2 E0 Y. Y
;;
评价时间- A5 X! w1 U! }3 h- I1 a1 S1 w7 }
ask myself [7 H& F- {5 q* f: \. E2 K- F' _
update-local-reputation
$ Y! Y$ S! |% }( T0 Uset trade-record-current lput([local-reputation] of myself) trade-record-current2 j, n) ~9 j/ {/ t' `; A# F. J
]& X0 z, K2 N+ E
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 s; z6 I# q9 Q$ V2 P4 A  b/ H;;
将此次交易的记录加入到trade-record-one
5 Y0 n$ Q* a7 u/ n' I: Kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 z* Q) u: Z. g# z  @" {2 alet note (item 2 trade-record-current )! m, c- r% w# A; f" C0 l
set trade-record-current/ I8 [; t  A- s7 m
(replace-item 2 trade-record-current (item 3 trade-record-current))

- Z! U& n" {/ u- I3 \set trade-record-current! C( q  q& S% g8 G+ Z0 m
(replace-item 3 trade-record-current note)
6 S/ _  \/ M7 D. t, l/ i9 L9 d. Z1 m' T; [5 _# _

7 W! g) B9 T$ r. g* Lask customer [
" H3 S; j" f! l4 p5 zupdate-local-reputation
2 p4 h) y/ a$ n! [) h& ?set trade-record-current
! z9 i5 B7 o1 M5 S3 E3 w' ?. F  D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# E% N6 ]3 u9 w  f! `]
# p, I7 T8 n. U: z8 _) m  I  v" V% Q/ [( \$ j9 x! x. [1 _
- V7 x  x3 r3 s: T# L; W5 k; }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 j# I* ^5 b) h1 S
3 Y1 n3 Q9 q0 w7 |: o2 B+ G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
$ N2 o% F" i2 e/ U" Q;;
将此次交易的记录加入到customertrade-record-all
& a7 o0 m1 g; d( Pend+ g# u3 M( J/ m, s+ u% p

! K. ?3 q9 J8 m" w+ K7 ]/ Cto update-local-reputation% q6 Z% C* C/ ^# ?- m0 k
set [trade-record-one-len] of myself length [trade-record-one] of myself
' C- W- }1 e# Q5 C8 d, X. X
" [+ L$ j6 t- ?" {3 W
2 Y* u2 x6 H+ n# Q+ i;;if [trade-record-one-len] of myself > 3

/ g3 M& Y4 i$ x' rupdate-neighbor-total: f& ~/ Z8 q8 [6 g/ Q! [' L
;;
更新邻居节点的数目,在此进行+ i+ r! n3 x$ ^" Y# }  ^6 H4 v
let i 3/ H6 e3 [& }9 l/ n4 L  o
let sum-time 0- g. C# b8 j! a+ l4 _
while[i < [trade-record-one-len] of myself]
" M, {3 m& k  [& n[! h, M7 C: @  a/ n7 Y% R' M) ?; b7 g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- ^, h4 m( e/ d& a4 c: Aset i
9 m& s; B3 D" `+ B8 C$ Q& \( i + 1)
$ S) y/ a) g: ~- g% o
]- c2 T& Y0 t, `
let j 37 x/ Z2 t# F/ o1 H! @, w, f
let sum-money 0& v) W' s( d, K5 g
while[j < [trade-record-one-len] of myself]
8 C" Q$ O- @9 ?% l0 Q. V; ^& B2 P[! _4 f- R& x" O' h
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): C+ }7 m+ n" u
set j- ]- L- Y* @0 [& ]- L( V$ E. g6 J
( j + 1)
' k- c6 @, M5 C7 ^
]
1 W& L0 w0 |0 ?0 Dlet k 3
0 _% q7 e: d; r% Q8 F$ blet power 0- h8 M. U. c/ O; S9 M7 a: l4 S
let local 0
7 i, ~$ {7 N9 h# u( Ewhile [k <[trade-record-one-len] of myself]/ l4 X: ^# C0 i4 l) Z0 n+ T
[% c' Y% g' u% y% D& l6 }
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)
! i* t& R0 E+ M1 rset k (k + 1)
' P% R/ T4 ]" m/ T]; ]) j& f" L, g1 v
set [local-reputation] of myself (local)
4 ~$ u) Z& M0 R# j4 y! Q4 {6 q6 `end
3 x' g# m6 h; J
& }7 G3 L# @# b1 C* C4 Jto update-neighbor-total+ P! u- a0 o$ p( x1 _
# j( Y: u9 f  D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* g/ e6 e% j; w- J

) I) A& L8 r3 ^7 v

1 }2 `* w1 w7 y, k+ |$ h& _+ Dend
8 L8 c- O; ~$ E4 `0 y/ ?9 x
7 a1 G- i8 M5 g4 z" m- n$ cto update-credibility-ijl
  w( @; d% v- g2 M3 y- y
& W3 j. {0 _" `, v1 c  F( S;;
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。( T. x4 A2 g; Q; L3 j
let l 0
; D2 h/ x4 z5 U/ xwhile[ l < people ]
4 \: C  ?" y1 R% l2 a" z3 V;;
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
- v7 r- w& u" Z( ^! ^1 d[) G7 m( U4 S8 o: |% o
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* v: C% J! `4 {+ gif (trade-record-one-j-l-len > 3)
$ l2 ]) [- g7 h9 f  {0 M( W2 P[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 i$ U7 l. ?% `; d
let i 3& Z  d$ W3 W' P7 g/ K
let sum-time 0
7 |* @% f# X; \+ F# Ewhile[i < trade-record-one-len]
9 j  w5 {: U8 p[
( ~+ T2 t& @3 iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& Z! [. [0 v( P, x  Y
set i, `: S9 r. Z- Y/ U( C
( i + 1)

, L; [0 @/ b( ~( j: |# i]
, y8 Z8 `( u% U- Klet credibility-i-j-l 05 o7 V' c8 {( X* b6 _6 f
;;i
评价(jjl的评价)
2 j* _1 Z3 j* e, [$ W$ A; Blet j 33 b; i, d! |* ]
let k 4
3 Y7 M0 O4 R* n) Cwhile[j < trade-record-one-len]/ t3 l/ |/ G' p
[/ K6 H- b  g8 \0 W$ L! Q, i$ P
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
) b7 T$ H" s: a: H" _3 i# i7 eset 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)* n* X+ M5 _7 n# `# v
set j% _. E4 O! b: q4 R0 ?
( j + 1)
" K  n' m  E; U- i$ ?$ ?0 ]. [0 S
]
( }) ]/ i% A% c' x) b) x8 [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 ))" d; w/ t% r% f  i* `+ i

4 _/ X2 t# y) w$ U! h0 g) W
* \8 ?2 }% b/ i! P+ U1 A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 q  h5 {: ]9 x5 v7 `, o! o
;;
及时更新il的评价质量的评价! B1 i- M4 R/ @9 X5 C% ?& @
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 j/ U4 ~5 K9 {9 L$ P. y7 `5 Q
set l (l + 1)+ m. _  F" F- A4 i# W9 N
]
+ ?7 U6 H8 Y  z9 p" rend4 y+ i6 a- F5 n; B
8 P, o* `: ~" K
to update-credibility-list  c$ x+ \, x- i  r7 a1 P/ J8 ^1 v
let i 0) b, q& q4 g. l2 _# i2 c, ^
while[i < people]$ g2 c: G3 f; r/ H
[# v( n/ P# m4 c2 w( I" i( g8 P( h
let j 0/ `7 N( V" e( B0 E4 K- |1 S7 j
let note 00 g: c* B7 E8 {
let k 0
/ n* V# K, p4 k7 T# U;;
计作出过评价的邻居节点的数目
" ~+ \& S+ s3 [& m8 Qwhile[j < people]
* e2 i- C' g. k& s: ][
6 X' F0 W' I, @0 ~/ S6 Hif (item j( [credibility] of turtle (i + 1)) != -1)
9 I2 S/ k9 z4 f9 H1 {$ S- P;;
判断是否给本turtle的评价质量做出过评价的节点% G, X7 R5 l- |' W
[set note (note + item j ([credibility]of turtle (i + 1)))
/ h* Z+ ]* G2 l5 a' };;*(exp (-(people - 2)))/(people - 2))]

+ a) z$ }- C% z! c. ]9 {7 J, {! Bset k (k + 1)
& T+ L( b( ^1 L6 S7 a" ~5 v]: \. s( V( w  u4 u$ O
set j (j + 1)
  L0 V/ `/ Z& Z# ]]
# D3 ?0 Q2 H( r$ N/ P# p; zset note (note *(exp (- (1 / k)))/ k)3 N$ A% h4 ^' k+ ]% x& y
set credibility-list (replace-item i credibility-list note)
8 m1 D. z3 P$ k% S4 gset i (i + 1)4 Z0 }* Y; p0 L8 D& a) |
]/ W1 Q+ D) k) i2 S3 f: Z) G
end/ M9 D1 Z( T9 Y
2 E3 G/ q/ [# n1 Z0 ^
to update-global-reputation-list$ I6 @, o) s% Q* w- O" o
let j 0% P5 p6 k' O1 C" F8 G
while[j < people]
- c! G1 u  D- ^5 k; g. {[
6 v' f  T( N% {2 O: mlet new 0
& J* q6 Z/ K) a6 t) B" l4 Y7 a;;
暂存新的一个全局声誉, }! d3 n2 N1 R
let i 08 W" A5 }0 Q" Q5 F1 b0 J
let sum-money 0
3 @( i( }, U  H9 z, E1 `6 X+ mlet credibility-money 0
" y$ `, n* p6 Q8 X& B# J: Fwhile [i < people]
2 o* f6 O! C/ q% I' u# |[# Y5 K: C: p' ~' e: L
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% ]+ J+ K/ a' x" }# M" {$ D7 M7 Gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; G7 n3 y/ F% J* I; a( P. T. t7 nset i (i + 1)$ K7 c3 e3 t9 F- H
]
! s0 a0 \# I6 nlet k 0
2 M3 j) }7 J; |3 K$ V# Hlet new1 0) h5 p  S% N/ H: @
while [k < people]
; c6 U" o9 m, E/ f8 T! k- j[
* l( S( K: m; O$ b5 Aset 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 _+ m/ M/ i! y( u
set k (k + 1)
  o8 ~" p: L7 L: r8 V7 C6 t- t. F]$ T9 T1 x( q0 o5 {6 Z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( z+ I$ A- e$ {) o; [
set global-reputation-list (replace-item j global-reputation-list new)
+ y% ^7 v/ s1 j$ @+ w$ iset j (j + 1)' t: ^% C& u. `% r
]
& _7 A' ]& R) v+ `. t1 o8 ~3 j' yend  ~7 u# h1 m( s# G6 R
& P3 j8 Y8 T: S. g  [% o/ k% P; r  G
# {, h; J$ o4 o4 K
" @, ^# K6 K; Y  V/ s: t# o
to get-color
5 b4 Z% y$ F4 T$ H4 `9 S' [: ]0 X$ w# F' E
set color blue

* a$ A) C, E% j& _' J2 ~end( M, i0 J# {4 T4 Q9 V

. R5 y+ d7 _5 `9 tto poll-class
* P9 z- v* j2 D. y! \7 H  Tend
7 v0 p$ B+ g, _# k
6 @; n0 q2 Q1 L; p5 y; u' eto setup-plot1
: ~9 v9 o# _/ }2 ^- G2 K3 ?5 T
' S! N1 _4 S+ f2 g2 {& Gset-current-plot "Trends-of-Local-reputation"

9 y- d8 s+ F/ e" N' y, s/ _
1 }+ ]; w1 C% [3 r8 m# i4 jset-plot-x-range 0 xmax
. p- {* g$ c6 N! y" |( |+ L9 U
$ N4 _& W% D# I' Z$ P
set-plot-y-range 0.0 ymax
6 z+ Q# c+ B3 G; I
end" y3 o4 t# a' f( D

0 a4 Q# {! c/ Y+ Qto setup-plot2
2 b! e, s! h+ `# x# Z" U7 ^8 f  t
6 v9 ]& H1 ~5 L/ B0 Oset-current-plot "Trends-of-global-reputation"

1 a1 j  O8 \  m' |0 _$ q: S8 X9 @, B3 W$ L: ~+ B
set-plot-x-range 0 xmax

; u( S, {- D; O$ {0 I7 `' A3 i) t# m  q6 {' A' e
set-plot-y-range 0.0 ymax
# ^( r9 ^) M& h
end& ?' u& f! b! u1 n

+ V6 k( U& B$ h/ s( l! Qto setup-plot3- }% N$ E8 \" n6 d) ]. K* q
/ c& |2 B$ {7 o
set-current-plot "Trends-of-credibility"
9 C# C: d3 ?7 c$ a3 ]

+ G3 [9 J& ?) W6 _! s1 Uset-plot-x-range 0 xmax

  S( n; `% H( T* i: f7 Q# @
' |7 d6 g2 Q/ V" Hset-plot-y-range 0.0 ymax

: N& M' A1 ?; {! x2 h/ J! K# x/ vend
8 O3 ]4 R) N7 O, k+ F3 k  i
! z% f; Z+ Y+ A/ S  a2 {* `4 eto do-plots% P8 e' [9 w8 K3 ~6 I
set-current-plot "Trends-of-Local-reputation"
1 r% E/ f7 @/ }, m0 @1 f: T' xset-current-plot-pen "Honest service"9 ], Y& Q$ Y6 K- Q
end
" o% \( n( ^) |. p6 L/ i4 K6 o
: o+ ]) g& X, l2 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.
  |! f0 Q: `) Q5 r" _1 \7 L- E; J/ z' A& ?1 B$ W; d' }/ R+ x
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, 2026-7-1 21:09 , Processed in 0.021675 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