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: 18587|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:  O$ T/ W+ i# M* u4 J! a
to do-business
2 M2 B" J! ~; U rt random 360
# r# L1 k' h+ P. U9 O3 B fd 13 L1 C( m' d1 i7 S
ifelse(other turtles-here != nobody)[/ B: \& c: ^7 K) V- t
   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.7 g0 O% d& {6 {7 \& Q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - V0 F! Z1 y: @0 l. H- ~# [
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" }6 j2 x. ]9 {' [
   set [trade-record-one-len] of self length [trade-record-one] of self& ~( K2 I( R; `' G/ H
   set trade-record-current( list (timer) (random money-upper-limit))* n; L, ]- U  c
- h! c( ], z8 H0 w& z
问题的提示如下:
0 F: L& H) U7 P* B$ p/ }- S" Z( m, e8 z( Z7 S+ M0 _/ d* L
error while turtle 50 running OF in procedure DO-BUSINESS
0 q* ^. R+ e/ d" G1 l# b* ^6 d  called by procedure GO4 Y- n' U, t  x+ }( @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 ^5 f$ Z- P, T) I' `$ p
(halted running of go)
) B/ f# U# f/ `1 z- h" w; A* s2 _0 g5 D* [% I; z( D; }
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 B* s3 L9 d: [/ g* ~/ \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+ ?  O# @' k! e9 d5 ?
globals[  j1 ?, }5 m% C7 R$ d; U
xmax# Z- K$ ~8 D, S
ymax
* t! s* L" x5 H* c) [global-reputation-list" }& k5 O, H/ h& }+ W) ~. [6 d/ a

8 B1 q) }( ~9 ]5 z0 B;;
每一个turtle的全局声誉都存在此LIST/ P0 p( ^2 _* l) @
credibility-list
% g' t! O% J+ R: V;;
每一个turtle的评价可信度
' [* ?4 r# t) uhonest-service) g3 H' {4 r: X
unhonest-service
# i* g8 w1 X$ Noscillation
2 X. t$ v' x2 C& I+ _rand-dynamic
% E* p0 B' U9 q; r2 A  N5 K: P! |]
% L3 D3 L! n1 w, M
) v) K* Q% y/ K8 _3 rturtles-own[
6 ^4 t2 }! j  x; d* ]4 T5 U9 ~+ Xtrade-record-all
2 J$ A1 m1 |+ x2 O/ X& ?- Q;;a list of lists,
trade-record-one组成$ ~. R7 g% U6 B5 C# @
trade-record-one
6 g1 ~% y8 Y+ Z8 [;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& c5 O/ N2 w0 `' r8 _! A
' n7 \1 x+ x5 J4 m! }0 R;;[
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]]
) z  d  D5 A& h( L/ d% _# K* w' Btrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]1 q' M5 j( |4 h! j) Q
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list3 @; L) Q* Q2 q* R; \8 k% f. Y9 W% e
neighbor-total
# ]7 A* q6 p; B& }) n;;
记录该turtle的邻居节点的数目
9 f; [2 K9 k) K! o+ G! X/ ^/ Vtrade-time7 ^* W/ h1 X! O- _- c# h
;;
当前发生交易的turtle的交易时间
2 r/ h& Q9 U! Q7 W. Bappraise-give6 I3 T, R# k5 C
;;
当前发生交易时给出的评价
! T' D- J, O' ?3 V, Mappraise-receive
. s: b" `. x8 t4 P;;
当前发生交易时收到的评价0 u( Q! e- D6 b$ B4 D
appraise-time' N1 ?, E, ^8 ?
;;
当前发生交易时的评价时间' ~; e6 K1 A) F- H. A4 \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 E: S8 }* }3 ?! T' d, z6 a! @trade-times-total2 \. \% ^8 j, t
;;
与当前turtle的交易总次数. y* r) F( _% x. R5 |2 L) J
trade-money-total
5 k$ V! x$ q- X5 n2 Z4 v8 _;;
与当前turtle的交易总金额
* K; B1 T6 @: e6 I! @6 j1 plocal-reputation
8 F! Q9 b3 ?5 u. Y% x  bglobal-reputation
0 ^8 `5 G$ E) `4 x' |credibility) S$ a. q: M5 M" v3 ^) ?
;;
评价可信度,每次交易后都需要更新
# P( |  C- G& h4 N' {7 Wcredibility-all5 e; X5 u/ B7 D
;;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
6 f" E* d* u* J1 G  E; H0 ], o
2 a- K6 i. W0 G6 A2 d;;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
, k. e. |( j% j0 p' Z0 Bcredibility-one% j  J. h* U& b5 ^9 o& @. w3 D
;;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
* t: A8 C* D7 `3 W9 Q1 h2 }global-proportion
7 H5 k" y; k: ?% V! Y+ L% gcustomer
( p/ f! z' k' e/ X6 }/ ocustomer-no
. K9 j, S3 {: n, r$ V' m! ]trust-ok
; G2 `9 U/ C5 M# z2 e* N# C( Mtrade-record-one-len;;trade-record-one的长度
  K( a$ e" v8 J- \' d& k  ^& R2 n]& ?* p5 D' l4 S  y( e8 M

3 E; ^* a; p( F4 q- o. {7 c;;setup procedure- _  u; T: X/ z9 ^- E
- G& ?) f* H6 B( m! E& E3 s
to setup
, M7 h+ W  e6 i' h' B7 V1 T% o1 s& e2 D
ca

. Y3 W4 y2 ~$ \$ T' _+ R' `& D# U6 }' \' w4 E7 k3 {
initialize-settings

: G) k# E# i6 a' t  X) {3 R* Z; }! _+ M! M
crt people [setup-turtles]
7 s3 W  J6 V3 Z3 d6 [7 W7 t+ v

- z. W7 b/ A; u* ?4 nreset-timer
' k/ D4 F* u! W# q! x' p2 `

- ?1 m  ?- S2 H3 upoll-class
- w4 r1 S; U% n, P. J4 c* c
# \+ D- @5 ~8 N8 B' j% Z& ?, X
setup-plots

# }2 E4 {; U4 g8 }; b/ ?" g4 T1 O4 J7 L, i- c& C8 ^
do-plots
; K- u- @1 G  G
end; h% g( z7 c! ]' d- z" m7 N, B

* {5 T2 G& i( y  v( W8 rto initialize-settings
1 Y2 g" @6 {: A1 o: S1 g
7 h6 Y1 C- p- l4 t" s) Vset global-reputation-list []
( a, d2 Z5 C, M0 C/ x9 }# a

2 F$ ~8 R2 o% Zset credibility-list n-values people [0.5]
% C- `" ]2 o% H8 h% p4 ]
* c- q* z4 p. Z+ }! @
set honest-service 0

2 r9 z8 _' z. C4 ?5 Q1 u4 |/ Q8 Z! p9 @! Z% Y  ]" {# z4 Z
set unhonest-service 0
7 ~: b5 j! f# R5 ]* s/ d
% t' D$ b8 I, p0 {( M! a
set oscillation 0
( t1 p  w- f7 F& b9 ?$ M$ Z$ d

5 ?6 H, f- r; B5 j/ h% ^7 t+ Sset rand-dynamic 0

3 c* {3 @8 A$ L" Bend1 Z; v  B3 ?; B4 \1 `; r
7 T, ~6 i3 r1 \, K; j" m
to setup-turtles
# |0 a( y2 h" Oset shape "person"0 ^& t# N. k% U4 _7 u
setxy random-xcor random-ycor1 H4 [. l" R: e5 V2 e5 W3 M
set trade-record-one []
: w* }$ z- B" H; f& l6 a! F' I" l
, b" b' O! |: {7 Z# S
set trade-record-all n-values people [(list (? + 1) 0 0)]
3 i+ F6 F7 f$ K+ C' k$ q5 ~
) U; c* A: j- j4 H) \' |1 G
set trade-record-current []
  n' v/ P7 r* N. p2 S7 qset credibility-receive []. O1 N0 s) }$ }
set local-reputation 0.5
+ U( p& o/ [1 `9 ?4 Oset neighbor-total 0* e# N8 T  F6 ], o
set trade-times-total 0
8 O9 _/ L4 [* ?set trade-money-total 0$ Z! n: G1 R6 A$ I
set customer nobody
% n/ P$ R) r# K6 V7 W, aset credibility-all n-values people [creat-credibility]6 D; r0 ]7 J8 r) c4 d& N
set credibility n-values people [-1]1 D$ Z5 E1 [' l3 @* z+ ?2 C1 I' H
get-color( Q2 w3 U5 U, @0 x7 `
  ?( d5 G8 Z# f9 u1 d) B
end
! g) H* y7 s# V( L2 x$ U5 u, {  g0 M( a
to-report creat-credibility
! s3 m' [9 ^! {& x1 yreport n-values people [0.5]
0 A" U3 K+ s9 kend6 S9 }/ f7 v3 E9 o0 V! l" V
  P% j  ?) t+ q1 n
to setup-plots* Y" B( W( L% j' O# ]" o6 }( l' r0 ]3 f

& n( e7 E8 q; B# V; Cset xmax 30

: ~/ p2 ^' w$ u6 ]8 }! Y& p' L, u5 U: [- n% y: v5 j  M
set ymax 1.0
. }' O2 l3 ?- W  Z4 j7 Y- y: @( S

. U% c* Z/ v) e6 Dclear-all-plots

( U8 O/ M- p9 g
5 ?2 U( ~$ {. ]4 s! V1 Q! jsetup-plot1
4 n* A& W  I7 z# b+ b4 |& c

- W, I% R- o) z: \, Y; Asetup-plot2

+ d9 x. x3 }: Y2 C8 s1 a
+ R" L1 @* m2 D" s# Y* ssetup-plot3

% `% i  m* ~  Y! V; C5 e  i, lend' Y. D# L$ j! Z( F
7 _1 B  _% x% r' M3 g
;;run time procedures; ~$ x$ O+ W& G( k" c% a  b  g8 _

' ~' D0 o0 u: {$ @. G2 x" P$ `/ [to go& ~0 _' k; `2 u* W

" @& Y' k$ {2 ]3 Cask turtles [do-business]

. f5 o0 E$ |8 i1 bend( a( j) Y# B; G0 n
# x) [3 v9 r4 E- _- ]
to do-business 0 P# {% m# o4 K" G& @1 c
6 ~+ S1 T: @$ e8 M

; A- @# ?' x9 ^rt random 360

/ V" h3 m7 M- P: O; z. [6 f% M8 J, p3 e
fd 1

$ {; ^0 |7 g5 _- g, l1 F4 o
( ~* e  u/ }) N0 x. F$ m3 Rifelse(other turtles-here != nobody)[

. D6 r% D* K% z/ e* p+ ~6 I
( L1 J, Q7 b, \: q9 y+ Tset customer one-of other turtles-here

% p8 N+ g2 Q" `0 q
/ t' Y/ l1 v* v, o: D' R0 ~4 _;; set [customer] of customer myself

, N/ w# h" O  x- q
, @6 i( U- B/ B, F) g" zset [trade-record-one] of self item (([who] of customer) - 1)* m9 q# I2 w5 }
[trade-record-all]of self: w. \$ M1 h9 A+ [
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, ]" G( C0 N7 z; D, }, t0 d! l) }( ~( J8 q$ u
set [trade-record-one] of customer item (([who] of self) - 1)
# u' ^3 v& S5 f/ I% j[trade-record-all]of customer
  O9 Y6 D) i# x0 y; t

# D0 B5 ^# x" `set [trade-record-one-len] of self length [trade-record-one] of self

5 l; U. r3 h$ k2 U8 f
3 I+ k3 G. P1 a! m7 u. nset trade-record-current( list (timer) (random money-upper-limit))
! L; U; X3 J9 H  k- u) ~

5 |* I  ~1 m& Z+ q4 N( {: Cask self [do-trust]9 v  p9 O/ |% @+ r" e
;;
先求ij的信任度8 f: `, D4 X0 K2 ^/ h- Y
0 v9 b! S1 `* A1 D9 j
if ([trust-ok] of self)
: w6 \7 s( p  W$ K, C) `. t;;
根据ij的信任度来决定是否与j进行交易[. l6 j% ?; `# d) u6 {' j8 U
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ z( u/ W* J, ]$ ~& S
/ }+ g% N3 h4 d# }* c5 A3 g  O
[

) V+ S& d( F: M$ t) X$ C
, l7 N* R# K" V2 _do-trade

* j2 B2 L+ ^* e" D0 V' T" A, b& a% U5 p( o  I$ w$ C, G) b
update-credibility-ijl

+ _6 P) R0 ]2 k* H7 f* T9 p7 i, x. e% e! \% O+ {, Y
update-credibility-list; v% n, P* O  n! d
5 |+ K- |6 z) ^! ]

* s/ C1 V8 R9 k5 y; L" h0 Iupdate-global-reputation-list

2 h  v. L" r4 J* |: ]1 ?# w. |( ~! N+ L' ^) }
poll-class

3 d9 J  T) L; _( H! v  G( n6 |" e  O2 ^
. _: e: V$ s, a4 a1 [- Aget-color
7 M, v! g: H2 p' _0 z3 p

! c6 e% Z. P  f3 H4 {4 |" A]]
4 F" R; D7 q5 T4 _) e8 F3 u1 U- }" M0 P
;;
如果所得的信任度满足条件,则进行交易9 |% Q6 N: ~" [/ ^1 k+ d/ e

! C& W# d1 J1 j  ]/ a[
0 l. o- X5 Y3 K3 f4 G0 H
  E0 x% z! j5 ^7 M* Z3 _9 s9 ]
rt random 360
8 Q4 u4 ?( F! k  p1 N

+ W5 j1 o: g( a% s  Bfd 1

" t3 K( @+ I7 O; l/ s2 V# w* a. E5 x8 v3 m
]

3 [. b, a. O4 R' b9 B# Y0 h. W5 t$ Z/ X  t
end
6 M. f/ F# c# |0 Z* M$ O, D
+ k) J* h! `) F0 L+ s+ d
to do-trust 7 q8 |9 P$ @9 {
set trust-ok False
/ d$ W. k: Z2 P& Y  M- H! P9 t; u# o, r6 k$ C# w9 W! _
9 m" s  T" v! p$ x
let max-trade-times 04 q# j6 F+ T$ z% q* H
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" ?8 d" ^' T7 @/ ?# P% f# z
let max-trade-money 0% v1 G2 F" k  n. b% m8 m
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  T* v3 O- a5 @" w' w9 K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 {; G* J& c/ [1 Z7 h3 _
3 i% J( G  m( X; n; u. ]: y

0 w# \: y: c+ m% B+ b2 l% Rget-global-proportion7 h1 }$ V- G' e7 p
let trust-value  b1 q8 |- F$ Z3 U2 N
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)
  [. F8 D( Q8 n" {# ?1 W4 g
if(trust-value > trade-trust-value)
6 F+ A4 g! m' v& a[set trust-ok true]. }4 }* o4 e0 K5 m# U
end/ A2 R3 @, J; n1 [; Y! E/ }

) I. B4 R. R1 Hto get-global-proportion
/ a1 B* P4 @4 d: f( }& q1 N& hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)& u' u+ x, ~9 v# ^0 v) c5 C
[set global-proportion 0]
- C7 M" ^/ P5 L3 Q6 _[let i 0
- t+ x) s  X) L- P3 K0 nlet sum-money 0
- V0 Q. z( s  K& \5 kwhile[ i < people]/ C. W& n/ O, t, S
[
' {* i( N' X5 ^  Bif( length (item i
& v9 ^: p8 o7 O: u6 z0 {[trade-record-all] of customer) > 3 )
) `: [" |% p+ c! X5 s
[
, S0 y: ~1 `$ m$ Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 c7 S( w; \  l]% o8 s, }- q+ X( e( c# W
]
+ n  k7 N# h4 P% J/ q. @2 Elet j 0
+ k, F1 w4 ?, l! d* |let note 0# r( i8 a* J# n  j5 `* O3 F4 o7 D
while[ j < people]# K1 d5 F# k- i% b4 `$ T
[7 l- V1 I$ K) L  d$ O. W
if( length (item i1 ~  D( f5 b; f" H
[trade-record-all] of customer) > 3 )
/ I) ^* H: K& T' N8 ]5 x- K, i
[6 t' \$ T1 T6 |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ Z( \0 p& Y: W* X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ R/ G- G' }( _1 y! n2 r2 H/ G
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ Q$ O0 X1 K3 }6 w1 h
]- l. w4 b5 l2 s7 X6 O7 G
]
  g$ s: m$ F& p/ B) C$ ^5 pset global-proportion note
8 x  d0 [+ Q' j$ F: i]
% h! O7 `4 x6 @, U2 @1 A1 ~end! D# C  l0 Z) N; r' [5 v
7 h' P3 r6 C9 ?
to do-trade
) c  U! H2 m  U" X# W) v: y;;
这个过程实际上是给双方作出评价的过程0 D9 Q. K2 X; r8 w; \( \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 a( d3 u% y1 B5 D0 \9 Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- X' b: v# k, V/ w. t, x: L: Vset trade-record-current lput(timer) trade-record-current
+ J3 g# \( n; `' I! N: x& e;;
评价时间# m' S: x) y7 b8 k( h
ask myself [
8 o* E$ C7 {/ J* b' l$ aupdate-local-reputation- _4 x2 v! a3 X+ w2 T3 Q
set trade-record-current lput([local-reputation] of myself) trade-record-current& R* Y7 v7 y+ s% z! m% L
]5 {$ q# G5 H8 y% f. |: b) l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  h' G4 O! j( B5 @: V8 N
;;
将此次交易的记录加入到trade-record-one4 q- Y8 f8 U* O# ]9 n' U* y1 e
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 n- @2 G$ r4 d0 N/ Q
let note (item 2 trade-record-current )
0 S- l% L. C4 M* Z) s9 Iset trade-record-current
" |  }1 O. M7 D# r$ P. V4 |' e(replace-item 2 trade-record-current (item 3 trade-record-current))

  Z4 ~" H! g$ V+ y( s3 I" E0 pset trade-record-current# T* V5 V9 |7 I) E6 u7 r
(replace-item 3 trade-record-current note)
4 S" l  F, u: y3 ~1 g9 l: v8 \% L, P8 G8 a
. W+ ]  L' |1 v
ask customer [
; y( g  W( \+ ^update-local-reputation
7 f2 f8 E7 o6 ^7 D+ I2 P3 Vset trade-record-current  B8 L* ~# }9 u1 `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 h0 I3 S5 e$ {% q( z7 M5 }) F4 K
]
  T% O1 H$ a4 t* G0 W3 Y
# ~: U7 |, Y/ E0 O( L" W: P3 d. U
# _. z/ `+ z& o7 x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& S! o1 H% N3 J& ^4 p: M3 s( K
% {: C7 W! e  C0 F6 Z$ }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( y1 r" Y0 ^3 o. K0 `;;
将此次交易的记录加入到customertrade-record-all" Y1 Z- k5 _- L, `9 A; Y$ P
end' @3 y5 p3 @7 e; W0 {$ I
. L$ g- N$ `+ `) G
to update-local-reputation* f7 s6 e( h# s2 F: R) V1 A
set [trade-record-one-len] of myself length [trade-record-one] of myself
) U+ _0 Q+ N+ r( V. b( b9 k2 }# v$ P$ y$ h

2 H9 E( q' D8 {9 a4 F0 {;;if [trade-record-one-len] of myself > 3
8 S' j- r/ @! F
update-neighbor-total
; i: a; Y( O+ ~;;
更新邻居节点的数目,在此进行
0 W4 |- v5 V+ @7 p4 Wlet i 3
2 j4 m0 @: \5 v/ n8 ^let sum-time 09 A0 a! }9 \7 w  u
while[i < [trade-record-one-len] of myself]' X8 ^7 X0 l3 x: g+ d
[% c9 F4 r3 _; |) W
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: Z# i1 R3 e5 X! `: Q/ N. qset i
) ^% n9 c3 D5 l' `( i + 1)
4 k- F% z; ], N% p" L
]
3 c1 ]5 C' r1 S" E, y' \let j 3( O- ~% t5 q! ?9 B- ?, f, l
let sum-money 0
( \- T) ^/ c+ J! p9 a) Y! Gwhile[j < [trade-record-one-len] of myself]
) v0 E. T, ]2 p" ~, }8 T% ][
" \2 O* L' o' ~* M4 f% z$ hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( \3 t& U+ ~8 x* R. [" H
set j
' a/ ?& r. u- V4 ~5 t) }( j + 1)
* A# K2 i+ D% q) |2 f+ n- w
]
3 X: ~% z. w+ O/ t- m6 llet k 3
2 M! g6 W1 [, L5 ?let power 0+ `2 x3 v. v5 `
let local 03 V- U7 s) C3 j1 ^
while [k <[trade-record-one-len] of myself]9 |0 k$ b7 X9 O+ g
[7 a# I2 \" C' B( n
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) 2 Z7 i5 k# u6 M. y$ U' l
set k (k + 1)# U4 D; I6 P. r
]
7 _6 _# f. }0 c$ Vset [local-reputation] of myself (local)) D2 G0 k. U) J. W, f7 m
end
% [  ^- N" {% N. C9 L6 d6 j4 P$ [8 w( i/ W( B4 C; w+ r
to update-neighbor-total# g# L- r6 ]& f6 M8 I

" l8 b( W7 p8 D) S: P* H9 G, I, Eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 J, q' ~, g7 b- W8 C

$ p- b( d4 V5 @0 f/ v

* {# `# O9 O# C( J& Tend6 M; I' l5 g1 X/ \' {3 a

& M2 p4 C9 [4 z- bto update-credibility-ijl ( w0 o* u' g: Y/ B, x

0 Y$ U+ M+ g1 R# 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。
( u, n0 i) h. H5 B5 P. Wlet l 0
2 p. d/ B$ V8 P. t3 Z% Fwhile[ l < people ]
$ g2 a" F$ J* J3 V1 r( m" k;;
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
5 D# a9 x# E1 g9 V7 P: n# f# N[
# T2 \& v9 {$ }let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ N0 W, z0 t; |7 D+ b" Q
if (trade-record-one-j-l-len > 3); o+ Z3 v( u  J* o3 M& U! U
[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, c. r, G& C! w$ ]1 c
let i 3
2 y! J) h: |, p/ {$ \! j# zlet sum-time 07 t  ?- v3 ]7 ]  o
while[i < trade-record-one-len]  i' z. R  Z" A2 X0 s/ t+ P. L- o
[) b( h' f* i3 K3 k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ B& P, N* w1 Z7 W6 s. aset i+ |5 p8 b9 p' M* e* ]
( i + 1)

' p5 j( @5 k7 A% ]& Z+ t]" ^; J2 m: v" M0 _# x: f7 [
let credibility-i-j-l 0
9 ]/ V+ Y5 j' p$ w;;i
评价(jjl的评价)
2 F4 A4 |' B- J- Jlet j 3
4 {4 ~  A+ w9 A! klet k 47 n8 E2 g" B, c* j5 [/ I
while[j < trade-record-one-len]
) ]1 y* m0 y1 l8 a[
# D# t, r& u: s+ p( X+ Mwhile [((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
' I  l1 x0 i; l/ _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)1 v' G3 S5 d6 p8 A
set j
, l* |4 L  v" T$ a8 P. {( j + 1)
; x$ J& V( Y  g6 S8 [
]/ t$ _/ W) P/ _$ J. p- ~
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 ))# k  s+ X# {3 f9 F4 W

8 r- E6 |4 H0 k0 s# N' ~: i' x

& ?, o# n0 `/ R' L4 ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): v; w5 w, V7 T1 m; c4 V& h) X
;;
及时更新il的评价质量的评价1 k& F1 d1 D4 z5 m7 f& c6 {
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ b7 D6 m6 g. l7 W
set l (l + 1); {7 ~: N7 Q, v7 u/ B
]
$ s+ z/ d7 g5 B9 E8 B, K# A3 G: {end
) f, `8 u& n, S! N! Q6 L5 F; m7 \* _& y: y/ G
to update-credibility-list4 a, Z; b$ D* ]6 o; R
let i 0
  o$ d. N5 x- Z6 t' x. ]while[i < people]
. F. j: `( Y' B7 N[
2 [7 F" P6 l8 B4 H( u6 x3 |let j 0
7 L; W+ O% [1 l' i* Nlet note 0  w2 U. H, \4 v. a  q
let k 0
  T; |7 M2 o' m9 G/ N: ^2 Q9 W;;
计作出过评价的邻居节点的数目9 K/ P0 V! p. S! Y$ J; y9 I3 n
while[j < people]
+ w) T1 f+ g. b: q: ~- B1 n[
3 Y0 N# g! n4 i5 vif (item j( [credibility] of turtle (i + 1)) != -1)6 I* Q; o0 c* ?8 K4 B. B- u
;;
判断是否给本turtle的评价质量做出过评价的节点
1 A- Y6 O: r4 E3 O% B6 z  V+ R( O[set note (note + item j ([credibility]of turtle (i + 1)))( F% h6 Y- {- w6 D% F2 C" o1 i
;;*(exp (-(people - 2)))/(people - 2))]
0 G" X- ]3 N0 m" x9 z+ t: C
set k (k + 1)
+ t  i  W) U  W- q8 n  V9 P1 }]) N; ]  }7 Z2 k" O& d$ t! e
set j (j + 1)6 D* n' `* X3 X' {  N
]: k9 I: s# M0 d3 S" ]9 b  [
set note (note *(exp (- (1 / k)))/ k)
% _2 F9 W! y$ w! H8 J& N% p  Mset credibility-list (replace-item i credibility-list note)" x: K* w5 D" F, N( d# x6 c
set i (i + 1)5 L+ q# L5 {. H. d& j! A: L
]
: r+ L1 O/ G8 L4 oend, `% S+ G& [8 v: s: Q
- F+ y- p- Y7 n3 K) [" |
to update-global-reputation-list
( r8 _8 B+ [  m; qlet j 08 q# c9 [' V) p0 m
while[j < people]
: I! f  w; O! x  {) ]* d2 o6 G3 F[
% ^; {5 y0 {& {' Z7 ]6 I  Elet new 0' v& {5 E2 I, \1 T7 u- W
;;
暂存新的一个全局声誉$ G" K- K. e8 i0 |' j3 x  v. d
let i 07 m" g; e& O7 b3 |% v5 ]) ?: s
let sum-money 06 W1 J! O  [0 `' E
let credibility-money 0
) z' x4 X- v+ K  J4 V1 C- bwhile [i < people]' B) [& a% z8 X4 S: A
[
: X6 Z2 O2 v  G1 W. oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ E( T' y' p1 _) P! W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 m4 k9 o! J9 X
set i (i + 1)! [  y) ^# y* c, @, V
]4 D& ~" \8 V: K! h9 B
let k 0/ A4 ~# O2 p' [  I6 ]$ G$ n
let new1 0! v" n4 Z* T+ u' N0 T  g
while [k < people]& `% X- T/ @5 ]
[
  g. Z0 S- K7 X1 e/ Uset 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)
3 O1 j/ u) u5 n" Pset k (k + 1)! B5 v- W6 K8 D
]8 g3 s% N" q  k1 J- @0 s
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; Y7 F1 f. O9 P. F2 {$ jset global-reputation-list (replace-item j global-reputation-list new)$ W5 o" ?7 {4 I# f' g8 a
set j (j + 1)
* R9 k7 N, f6 X]
. f. x$ P6 M$ w2 z1 \' K# [4 b2 C: Eend7 P7 a+ I: P4 l8 e
- V) j/ z5 q5 u. ?1 I" _, P
# `9 @2 o+ l2 |6 W( \6 `

# h4 D3 F% o' ]' a' u+ b0 w+ bto get-color
2 @( p+ }4 {  h8 d6 E
4 E& x- t8 m+ j9 t8 V; fset color blue
8 c4 z8 {) {" e. }
end
. j  ^: f% m3 }' g6 U8 u
9 V# C2 u4 X7 B  b) uto poll-class
7 z7 r7 u, l1 t/ D# Z. ?end1 e, P! n! R- x" k6 x  M

: K) f  w9 b, V" Ato setup-plot1
$ v3 m/ l; T$ h! |7 O8 W/ Y5 z4 Q' m6 b; @+ v. b4 g  q- K
set-current-plot "Trends-of-Local-reputation"
+ v1 x8 K0 ^- ^& u  h
8 u* F6 q6 Z3 v  ]. S
set-plot-x-range 0 xmax
" b( y! S) ^: e

9 g" c1 E  J+ `( P' }- l9 Lset-plot-y-range 0.0 ymax
; _  g6 y8 E! s1 X* }
end, j' {* ^3 a( N" F2 A+ f! }# ]
) _# h. H9 @& e0 N9 z
to setup-plot2
) s. F& Y  A& {1 {$ ?  G
9 B6 Z/ U; J7 j+ t, O9 vset-current-plot "Trends-of-global-reputation"

, M- z( U! l! t& u5 F4 ?! F6 `" B3 z
set-plot-x-range 0 xmax
6 d* T9 ]* W7 t6 C- K

- r, O) a4 a$ ^1 e/ s& i9 {" pset-plot-y-range 0.0 ymax
+ I" W1 H7 d5 [1 D& C" |6 A$ G
end
- _* p; y2 g9 ?' H3 ]9 Y
! R! O  J+ |4 a$ N+ b4 z+ Ito setup-plot3
/ w# j! ]; @3 W% g
( D$ x5 u7 P( g" E8 K5 }set-current-plot "Trends-of-credibility"
$ ]! F2 c' c+ M
" J( m% A$ h- ]
set-plot-x-range 0 xmax

7 d, L' m4 \% m, w/ ^, l8 M7 ]4 Z2 s: k9 t0 F/ ~  ]- Z
set-plot-y-range 0.0 ymax

9 z* I! Z4 P3 {% E7 i# rend. ], ^8 ?! H) Q
  [/ Q* G7 k9 V( B5 ^3 A* w$ N1 b
to do-plots
. {1 X0 g, g, R! r2 V7 qset-current-plot "Trends-of-Local-reputation"
1 X- l- c8 N& [# P# Oset-current-plot-pen "Honest service"
0 `0 ?+ C" h2 ]# Wend
1 c8 s. h+ B. ?' p: s  ]0 J3 b0 {2 F9 w
[ 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.( y7 r9 }3 G0 |
  p& h- K1 K3 W' _* B/ c/ a5 s2 R
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, 2026-9-18 12:23 , Processed in 0.025127 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