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: 17196|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:
0 Y; F* F- \$ S6 O, sto do-business 1 y) ?9 J8 H/ e. k
rt random 360; i9 l: {" u9 w0 W! E2 C4 V
fd 1
( l0 @1 K( T. r8 F ifelse(other turtles-here != nobody)[
2 b. y7 A2 m) R" I; l& t" s# m  k   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.
/ L# p- _3 m, d' _3 M* U+ r   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! d5 `9 a& X! _6 a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' e9 I  e# j" Z6 l4 B. f   set [trade-record-one-len] of self length [trade-record-one] of self
: t# p. c: H0 _8 V. d3 ~   set trade-record-current( list (timer) (random money-upper-limit))
6 r+ N- B) H* p- H. a0 |: |
& b1 L: B% X  e* e2 P: n7 E" @问题的提示如下:' ^! R, _* D* D) i

" m# t8 a5 `9 n5 A# C8 t5 Y6 z8 Werror while turtle 50 running OF in procedure DO-BUSINESS2 Y$ f; u: e$ v1 v0 c. w
  called by procedure GO( W4 Y( [4 w1 x# |$ U) \2 I( P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) V% D6 B# ^  z- |- ~! `2 C* d( ^0 ~
(halted running of go)
2 y, f! V# F) d% V8 \/ y! X* b% K& l0 I
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~~
* Z9 H4 r; N% J8 {% E7 a6 A' 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
7 J2 \( n1 L/ E- A0 lglobals[8 b" W* W! _4 ?% u7 g! L
xmax9 C0 B' ~; P& H
ymax
8 a" R9 ^: X0 q& Sglobal-reputation-list+ m  N. M. o3 y' v( T
" m* U+ e' @6 n% I$ B
;;
每一个turtle的全局声誉都存在此LIST
3 m8 D) w, u5 N8 L% x/ `" n4 kcredibility-list, r0 q  N5 E. ^( _
;;
每一个turtle的评价可信度3 Q4 t- Z3 o1 Q$ E0 ?) @4 }" ~
honest-service0 I( ~* k: s% O1 J$ P* t
unhonest-service! ~( v6 @4 `* e# `8 w" ]' c5 v% k
oscillation
9 v$ H$ z" w* g2 R0 grand-dynamic4 k# b& H% T+ g4 A9 [# V5 y" s
]
& j3 S) Y3 w" n* ]) t# r. @: w. {  t8 {( f5 j! z9 r3 e
turtles-own[1 P& _! z5 t) o0 A7 t/ F! X
trade-record-all
+ S! j4 c  ?1 N7 h# E" ~;;a list of lists,
trade-record-one组成0 R* s! _, R( k2 l0 }6 w
trade-record-one2 \9 f* U( X2 G( u
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( q3 b- D6 _7 E7 {) \

, r- q  u  Z) c7 }0 |  F;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
0 H$ Q! ?+ P% Htrade-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]$ u' N& \* d7 \; P5 K
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list2 {: ^" C) C  b7 C2 z
neighbor-total& H0 u$ P: T& V2 Z- p
;;
记录该turtle的邻居节点的数目" {# j% b0 ^# H, \6 N
trade-time
! b& y9 I- y: S2 L;;
当前发生交易的turtle的交易时间* w# \) R+ V$ D4 _5 F4 |5 }+ n
appraise-give4 S& q7 a9 J: g& O
;;
当前发生交易时给出的评价1 s7 B. e  Z+ \
appraise-receive
$ n9 l+ p+ m& Z7 y5 T9 ^" D  Y6 r;;
当前发生交易时收到的评价
/ w5 F8 L% D2 i. z7 s' X5 v3 [appraise-time0 W# i1 _* ^3 f! v% k: g
;;
当前发生交易时的评价时间
5 V: Y- |  |) u& P( M  c7 tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
! E5 Q* |) m' L; G6 o- ?* Vtrade-times-total
& A# W  u, k1 L4 _0 b# {9 {;;
与当前turtle的交易总次数
8 y, c) m4 v4 Q% h' z3 V+ L: x7 K" {trade-money-total
4 b/ v$ H; |8 s;;
与当前turtle的交易总金额
/ t; \9 Y+ e0 d! Y0 alocal-reputation  m$ {) F% C9 `( b) r; h
global-reputation
9 k' ]4 G; x. b, d6 Icredibility8 k$ z0 ~( V3 ~( ?% E  G
;;
评价可信度,每次交易后都需要更新
& k' ^2 @+ A3 v( f) B2 }7 h9 w7 tcredibility-all
0 s+ {# l; H  S+ k0 Z/ t9 J, g;;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
5 Z! J1 c' g. Y4 B6 x
, H6 a$ j9 @- R; k; C3 V;;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- {% s: j8 B3 Q/ F' W# ]
credibility-one; L: u' ^1 M" b1 i5 j2 `7 k& f3 X5 a
;;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
3 F& U; S% l" h" L% ?# sglobal-proportion5 `+ t! Y( ]  K# }$ z- B, H8 Z* }4 S
customer
8 d  G( _. U5 q) b- L  pcustomer-no
# B  N7 L% G9 E) r) W9 dtrust-ok' t5 `* H1 f- P) B7 ]. ?! ^
trade-record-one-len;;trade-record-one的长度
; {: o6 ]$ v6 a& ~]
1 j& P: }' F% s8 E" B  G! J$ r8 t6 D3 A: b2 X* Q, J* T
;;setup procedure
" N4 N# b" M/ b: m( z$ J  y, m* u6 `% l9 T9 `4 T6 Z: r8 m2 n
to setup
) q# L' @+ d7 U; w! B
2 f! n  n" x5 A! i# i  }# {+ ^' _) Uca

+ d/ q7 V. a4 M0 \9 z; P  {  s% T; `0 }+ \' \
initialize-settings

  G- c. Y$ `$ T0 K9 |. Y# ^( W" ]. d" B# I% _" ^% W8 q$ t# n2 }
crt people [setup-turtles]
- W7 @5 }7 l2 d: |: `3 r+ z
9 d0 ?4 Z8 b! o, T* n
reset-timer

" _  s% H$ M  `/ o7 l2 o1 ]1 K3 N5 z8 r/ ~8 J1 G& U
poll-class
$ `( N  J" [: b. h/ P4 E

( q3 O, x$ R7 `# S, Qsetup-plots

# v: t' Z. P4 T& b( a( b2 n
) J& j' f* k% n' m; Hdo-plots
' ^& I. a- p- t" m  r/ m
end2 |0 B* ?; @, a# H* W3 E
) K6 w! ]+ m% d! q9 t
to initialize-settings# c3 Y# M' i/ F; k% h% K
4 V0 C& @' ?. E9 W7 z0 ?
set global-reputation-list []

. n9 T$ o1 f, ]0 F/ b
9 a; b( E7 ?: M2 G3 B! e  wset credibility-list n-values people [0.5]

* ~* v# r3 N) k- d  W4 ~
: O% j6 k, k3 L3 R% W( n4 e+ Mset honest-service 0

/ X9 g8 j* o. ?' I
' Y- F3 T5 y, u1 A+ l; yset unhonest-service 0

  C1 Q6 ]  L3 p! O
" Z8 |: C) b2 bset oscillation 0

; I) B( k; @; E% @2 Z* ]& Q, p0 Y9 t, L
set rand-dynamic 0

# F- X4 P1 v# D; W# }  J$ iend' n0 c; p7 V' i, x
% j* @* r1 N1 i1 z8 j
to setup-turtles . u2 K( t8 j: h1 b+ y! ^0 R9 O1 @  c
set shape "person"4 K  H: n* r2 i' n( T
setxy random-xcor random-ycor* ^. A# l/ Q1 O6 z$ X% X
set trade-record-one []7 X% D: z: z. Q/ T4 `( {4 ]

3 c  Q) }: x( z5 _set trade-record-all n-values people [(list (? + 1) 0 0)]
; \% [0 j+ Q* N1 }" ~9 q+ U2 I& l& e% q
6 G* ?2 ?$ S0 d6 ^. I9 Z
set trade-record-current []. p  W3 n# R3 F1 a; l* K# Z
set credibility-receive []# L) x+ h0 u1 q8 d2 O: i# i
set local-reputation 0.5
% \) F/ u9 g/ E& [: Y1 \set neighbor-total 0
: ^' T1 r; @' ^7 D8 Dset trade-times-total 0
. P6 `. |5 d- @7 Q& fset trade-money-total 0
! U; {  e8 e* {. ]; C$ ^: Qset customer nobody
. r3 F+ T3 I0 m- k3 m9 bset credibility-all n-values people [creat-credibility]  H& p: P) A( ~  c* {8 X, c
set credibility n-values people [-1]
3 [" q1 j1 i0 E& Yget-color6 e' d( c9 W& m; _8 a1 s: q% i* p6 Z
" [5 t/ O& ~; Z( f8 |  `7 F
end
1 V* M+ O! S% L8 u; q/ T) s7 H! {8 B8 r) O
to-report creat-credibility
8 D! s  C! Y, w' a! o4 Hreport n-values people [0.5]
- x$ |  a  t& \$ X8 B' {1 V# Iend
) D6 Q6 [. J3 y9 {
. E' @" x# q: [* Xto setup-plots
4 r6 U% p9 V. t# h: v1 g0 m
; v. V/ }' D8 Q( x  ?set xmax 30

* R; j4 X6 j/ N+ Q2 C
7 B7 `9 L- O& l5 @7 Y* Xset ymax 1.0
* ~1 a1 k) k, A0 S/ c

7 j6 p6 H, i1 _2 P5 P2 `8 c) qclear-all-plots
/ X, T4 U. [- e( D
& D" y. ^: d# t, }, \; \# X- U2 ]
setup-plot1

  @3 z* K/ F6 p: l2 M5 c) c7 _8 x' I7 v
setup-plot2

# l4 }7 X: F- H+ s
2 Z5 v3 U! c) \5 Ysetup-plot3
7 n' d0 m8 i; s' D
end
& r$ o2 L' j% U# f, n" h$ W( A3 c# Z& Y
;;run time procedures
) @. j- ?2 p  |) G( P7 R! B
& _! i' Q" b: i7 ?4 yto go2 \: h4 N1 `, v4 f& h( y
, t6 U  M! u9 W5 w
ask turtles [do-business]

+ `* N* y* C0 Y/ z& v* r+ B4 nend
4 ]6 r* @. m2 ?. V/ A
) |7 B+ |" o+ i. h$ M/ j% `to do-business $ b  L" v- f2 v- g% a9 b& o0 `( I+ E

) {% {) a+ W% ]* y4 }5 ]$ w8 _* J8 F: a0 b) S+ u5 ^& o3 j( J
rt random 360

( ^& V% }+ ^5 X: S; W9 f( ^; X3 ^; y. f! o" K8 y7 O
fd 1
$ d: I6 @' O9 B4 ]% s: t+ f
1 w: L6 C; {8 o. d# U
ifelse(other turtles-here != nobody)[
. I5 H, q* a: _# S' b! J

# ^/ F; Q5 M1 d) \( m! d9 \3 \set customer one-of other turtles-here

7 M8 ?2 r3 Q/ g, `+ N7 `( D! t0 A) ]' V, _
;; set [customer] of customer myself
+ ?) ^' B& s: A$ ^& L$ Y" Y

0 @( X5 U. I) C4 A$ g* O- u2 k3 Rset [trade-record-one] of self item (([who] of customer) - 1)
0 M  B& I6 s5 t$ N+ u[trade-record-all]of self
' |4 I/ P/ L( h  J0 {* ]7 u4 k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; @/ z3 [  A3 I: B+ k3 c+ M, p! W0 k0 Z0 b
set [trade-record-one] of customer item (([who] of self) - 1)9 v4 b/ E' x! f# d5 \! s
[trade-record-all]of customer
+ X4 E5 b7 a7 M3 l
% r: {) c, O% L" d0 \0 w
set [trade-record-one-len] of self length [trade-record-one] of self

9 U7 _. C9 I. p1 J+ u3 c
" k9 z0 ^3 m2 V2 wset trade-record-current( list (timer) (random money-upper-limit))
* q- f. ]: \7 A$ z( e. x7 ?$ k

" ^7 a/ i6 n& O6 l& [ask self [do-trust], q3 k( O( L5 O3 E! t# l0 ?+ \! N! t
;;
先求ij的信任度6 I- r' d6 }' L1 U$ ]

; I: V4 y& b1 j# y6 Wif ([trust-ok] of self)2 N  D7 r* O* |
;;
根据ij的信任度来决定是否与j进行交易[% u7 j' v, i3 a5 X& z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) o1 c% h/ A' _0 R2 ?
5 |  l: y& w6 \6 s, y; _6 ?# m# a[
3 f/ z" q" ]7 R- u

/ S1 E8 w- y! P4 n/ Sdo-trade
, O* k: Z. Q3 L* b

8 v& p) q7 L7 q# lupdate-credibility-ijl
6 j8 J" z3 O6 m! b

  B" [& H3 O7 }/ |  I2 \update-credibility-list1 h2 s; B8 ~* z* ~  |1 _
; S# q; u0 }, C1 k, D5 k( ?  d
5 w, _; T6 ?9 `
update-global-reputation-list

1 S) T5 y# N& K' H+ ^& e1 n/ y4 s: e5 y( l! Q& E  W
poll-class
0 r" B# s. h+ f2 j; p

; e- Z* T, \8 q$ X1 Jget-color

/ I- o- H' z! U
5 s& m+ g2 ]! M$ f, F]]
  y" V: ]) r1 |
  u" p( s3 @( H) K# ^1 P- m;;
如果所得的信任度满足条件,则进行交易0 C' e% t3 Z: {! j& u8 c7 G% h* A- V6 R

  ?4 s4 ~; r  ]2 N( s[
2 I0 ^4 [- C2 t
. ~' o: Z3 |, q
rt random 360

+ e: y  q! v+ w5 r. ?9 f& t  U/ A! V: s1 ?$ X. Y! Q
fd 1
) O" Y* A0 ]2 I" J" Z" l
2 _" p3 M  v( ~' @/ V$ z
]
8 E/ R8 I; R+ a4 `7 U5 a+ w; n
0 O8 e+ }! _  p
end

0 l; q+ U" c. c, r
- j% E, c8 i' s& Xto do-trust # B4 ?, B3 H6 N0 y1 h# ^
set trust-ok False
% e  F- b8 ~2 X. t
7 |: g  l( q' ]0 {. N2 f4 S( L  J
0 z# S! F+ v- i% Y
let max-trade-times 0% F  {5 E# v$ a  A3 i& ]  _
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 S+ W4 K) x  }2 k* Clet max-trade-money 0
+ O( x+ y9 D5 i6 `* ]+ H' bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 M5 u, L) j4 i- }8 @" ^: z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- P& ]; \% G% `. l+ y2 j! [
! h+ k, s& L1 E( w0 \

: k% J% Y2 a+ h- N1 o) y; M/ U. Lget-global-proportion8 W: k5 A6 t4 C6 s' y  s# T2 T
let trust-value8 e1 H- Q) |, ]' R& O$ a) i
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)

5 {+ \- t) t* k  i& R# uif(trust-value > trade-trust-value)8 ?0 C- Y+ b, G6 v# Z# s9 J) R
[set trust-ok true]
; x- D3 {  G' t" M0 tend
& r: @/ J2 L" M8 l$ E0 U% U6 l/ W% _, d" {, `. y' i
to get-global-proportion; ]2 C$ K' d% o* f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# s& ~* M! D7 g) g* t
[set global-proportion 0]6 _9 w) O! U$ F% g
[let i 0
  ?' d) z6 L% M3 k/ Y8 a. `- clet sum-money 0* U- n+ X: v# d, Q( {+ g
while[ i < people]. }3 ?; M' j- i' r; n
[6 C( g. X, Y1 u- m& d0 S1 a1 L, ?
if( length (item i# Z( W2 P; Y1 R, G& v( i% [1 m( s6 S
[trade-record-all] of customer) > 3 )

  @& p4 U2 [) _[
4 g3 I+ Y9 p- j; nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 `# p. ?0 N$ K- |7 j]
; ]( n' X; ]& I: Q4 o) `]
2 @, v  u1 h6 b) x, a' olet j 0
! F8 c& Y3 t# @# Ylet note 0
0 ~0 ^1 i% x( E+ twhile[ j < people]- X9 r: z) v' l
[
0 m9 C2 k2 ?6 {3 j! rif( length (item i
$ a* V- r) J+ q/ p- z+ |3 k[trade-record-all] of customer) > 3 )
5 Z6 W3 M3 D* t! H, l+ }+ g
[
% o- S- ]' T/ p/ u7 {& jifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% c* q2 u. Y4 i4 j* @" R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 X! O" Y) R, i; Q) h/ v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 q3 A2 Z3 M( Z- i% o' X
]
, \- N" r6 t  u9 I4 o3 O]: `  m/ \& o; Z9 g9 Y
set global-proportion note
  r: c& M6 J( D& P- H]
! a  b. k- Z6 {7 @- Jend( C; M. X. k! l( O4 m
7 @5 \+ z+ L5 T9 h+ I
to do-trade$ U4 M2 c, g) ~( W
;;
这个过程实际上是给双方作出评价的过程, I* x: {; _8 R, e& R' q! ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
4 W8 J) U! y$ B  \; {  f4 [& rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" e$ r- Y& H5 j% r% T  u- E
set trade-record-current lput(timer) trade-record-current% |5 B: q. y5 t' ]
;;
评价时间2 Y! Q9 n. h+ O9 u% D8 l# r: b( W
ask myself [
- S  T. d$ h6 Z7 @1 C. Q+ _3 b) r. Pupdate-local-reputation
+ j% V) n, s$ e; Cset trade-record-current lput([local-reputation] of myself) trade-record-current
" F9 B+ W% v. H' X% d( P]
  o0 ^4 _* P* Z. k- ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 q. k+ c  d1 a$ Z, \
;;
将此次交易的记录加入到trade-record-one
) U4 a: i9 c; @: Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( F- j4 k* K7 y% Z! W0 ?: L- U
let note (item 2 trade-record-current )
- U" L: ^4 g; x& {# l) p! Mset trade-record-current
4 `% ^' n( G6 E0 X3 z: W9 o(replace-item 2 trade-record-current (item 3 trade-record-current))
& o) o2 m4 N+ j2 L% Q
set trade-record-current
* k) @1 p7 w0 h: r) P4 I(replace-item 3 trade-record-current note)& t1 {% X( O+ g1 b3 u4 k- z
7 L9 U8 u( R7 w2 M
2 ~- Q" B3 ^6 }( G; H0 R( h, Q" }
ask customer [
9 l1 z0 p2 C, N0 ~. ]4 O; lupdate-local-reputation/ j9 O& U7 O8 w, p
set trade-record-current! \& i; E& S; q! }
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 S' [: d- V4 h% j$ F! k9 C- r
]
5 Y+ [3 G0 G5 \" y2 t
) J; K) M6 D3 J  J  P
* ?- b6 i0 a' K; u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, J/ {; J( o/ i; [" S5 O( Q

4 k- w1 a( ]5 bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 _. [( m8 I. n; \) g
;;
将此次交易的记录加入到customertrade-record-all! C& g$ c/ T7 N* }1 n
end! |  a' p7 {: H1 {

. U( n  C$ w. K# l) Dto update-local-reputation. {1 ]- B$ r5 V2 z( t7 M
set [trade-record-one-len] of myself length [trade-record-one] of myself% Z+ _9 R$ V: E" w  C

2 d& P( f: r  R5 Y$ J( l3 X+ \8 p4 M8 L( F3 v( w; _) z& \9 h& |4 V
;;if [trade-record-one-len] of myself > 3
) z+ }4 p2 X7 a. `8 J) d
update-neighbor-total
/ H" C6 R9 n. a;;
更新邻居节点的数目,在此进行
5 a. ~2 o4 |0 `, W/ flet i 3$ U! i6 V  u5 }
let sum-time 0, U2 y6 W* i5 w2 o3 u
while[i < [trade-record-one-len] of myself]9 h, J& F+ {3 y# N: F
[0 b) h; F: d5 t" f$ S* v) r7 f
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 S$ t, o/ K1 z2 Y8 K3 ^set i
/ U, \7 b/ ]" \( e. J$ S* d) W( i + 1)

, b$ O! K! U, @# z' t& a]
" k  b3 @  P1 `let j 3
- x' n4 w+ {8 ?+ f" v# glet sum-money 03 o$ h7 t' T: C$ }  K+ M' g
while[j < [trade-record-one-len] of myself], v8 v) }0 t8 Y+ \7 n  O
[0 W) z& i. |5 d3 w% G, X9 m
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)
9 y4 j  l9 z+ X+ N, D$ I" X" \set j1 T  L+ g6 z/ Q, i
( j + 1)

  i* c$ p4 W. ]7 u! T]5 ~5 I" c8 k! x
let k 3
. e4 U4 Q+ m6 [! R8 }$ Nlet power 0
# e6 B! @* _1 \let local 0
% I" g: n3 J) X  Q0 }- ?; dwhile [k <[trade-record-one-len] of myself]) W1 i) m2 V2 Q
[  }  H& r, m1 z4 T: u: [/ ]9 }
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) - d& r1 t6 n1 ^- I! Y2 P; ?9 i
set k (k + 1)1 Z3 H! C7 q( `  w9 o. h  {
]
9 M& m/ J5 z0 _" U* bset [local-reputation] of myself (local)' r$ y& v* J! c! X
end
/ X* u; P4 y% q* ~% w2 ?5 ~, k4 w/ s& f! X
to update-neighbor-total
' A1 ]. h0 _# J
$ k  }0 w+ }4 U* \% R- P  ~if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! J% M/ V* e6 w4 y% u1 Z
+ t/ u8 Q9 m$ l$ u: L
9 K" |; D" f( @. F. H6 m1 }: a9 |
end
( ?1 S: j0 V8 V7 q. v4 |/ R9 m8 {
to update-credibility-ijl
6 i* X0 U$ ~! [, r: ?
6 T. @/ \! j5 }5 G6 h;;
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。; b) t- g1 [8 M* r$ M" G  c
let l 0
" ^1 v  t4 o) U/ [+ k6 Ywhile[ l < people ]
) G: c7 l0 e) s% u; v0 @" o0 c;;
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! @2 l8 _0 p+ g# ]+ i- E
[1 c6 K- f" x7 q- y5 W
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 [" u& h! |5 ]; Hif (trade-record-one-j-l-len > 3)
7 M8 l1 d7 d# ?, _3 l; u) p& b[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
9 W, b7 f) W1 H# vlet i 30 @/ i" `2 b! {- ?! X' M1 x6 S
let sum-time 0
; d% C; l; _/ c) ~5 t# Vwhile[i < trade-record-one-len]
: F+ D6 K  f' E- i. Y: L4 g[8 c/ M6 }8 `! v: F+ Q; |
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 Y6 o9 _6 w8 O3 s" {1 @6 }& f
set i
4 c1 ~& r) _, C& ^( i + 1)
- t5 v/ h* q& b% V3 f% V5 Y
]
' G& K! @& [, ]! |6 w& clet credibility-i-j-l 0" x) z, y+ b! ^" d/ z/ H; m6 l
;;i
评价(jjl的评价)
; v6 h' J" z' m% M8 G, y! Z% I; Z, n) Blet j 3
8 k1 Z! {+ P# Glet k 4
9 M: W3 E1 K' d$ e; T3 H& ~7 _while[j < trade-record-one-len]. U, A- N) W4 g1 H: N0 ]7 }: N, r
[
* v; B6 G4 A: l9 k0 ]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. q$ e7 U) R5 q' U
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)% v1 |% f2 c$ e) d. V  ?
set j
1 d! k1 l7 K" \  P& R/ r( j + 1)

' ?& w, \$ H% r& [5 ?7 u]
1 f7 A! }9 o$ Z$ d7 y2 rset [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 )). n5 x6 }7 O" r% u7 Q
! ~( z2 ]% I  @6 u0 s- y! J; U* p

6 l% e7 h% O* ?0 @9 Q! ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
  }4 e- m) K4 v2 F+ E! d, ?;;
及时更新il的评价质量的评价
7 I% m2 T* @* k! yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 ^& H& x! u7 k& j: b4 Y
set l (l + 1)9 O' x# `) \1 }7 _  }9 x4 I# `3 i
]
  Q& n* B* l. r: O6 K! ?3 d" ?% H+ Q; X1 Gend
, t& ?# d3 Y& |( p5 _2 H
5 p! ^1 H& \" G& D4 fto update-credibility-list; g: }8 r5 Q: R; o
let i 0
  F7 d5 v2 I( F) V, a2 ?# [while[i < people]
& T. z; n4 N1 A( Y[
! p, D; X2 |/ b, @" s: I' Rlet j 0
$ Z- J/ S4 v5 X$ j* ]% Q  x1 Elet note 0
2 `. n; q7 _, T  ]let k 04 z' {- z  Y& s  E2 j
;;
计作出过评价的邻居节点的数目) s3 t6 A2 d0 R* X
while[j < people]% f- I: s9 @# u( \
[
/ K6 [" g3 T$ Oif (item j( [credibility] of turtle (i + 1)) != -1)/ i0 A; z9 s: X. o3 M7 p
;;
判断是否给本turtle的评价质量做出过评价的节点3 X3 W. ^4 o) j( U1 [
[set note (note + item j ([credibility]of turtle (i + 1)))
8 V1 c* R( `* r9 V; B: N;;*(exp (-(people - 2)))/(people - 2))]
/ T" w) E; u# i2 o( b
set k (k + 1)5 ?, V7 x9 v; n  ^. J
]
' }2 ]) \4 e+ s! I/ bset j (j + 1)" S9 Z6 u& p- f/ t, m% q+ r9 x! b6 R
]
5 Z* \! u0 H, a0 Xset note (note *(exp (- (1 / k)))/ k)6 `$ v2 b# G) c! F2 t+ w: l
set credibility-list (replace-item i credibility-list note)6 Z- m5 S# [7 H1 C# w
set i (i + 1)
6 [* [: O2 s% X" \/ M]& \/ {/ H! Z. p  k8 ]# V
end
" g: ^  l6 L2 P1 b9 e4 a9 D* v1 g) G! N! O4 A' y( g0 Y! n
to update-global-reputation-list
2 u6 I6 Z5 C. d0 y  @let j 01 L0 F, R+ M  E: w/ A. o- Y' B; L
while[j < people]
5 N! l; g) x  o  r4 n[/ o5 b$ B0 G4 o( q3 [
let new 08 ?0 n4 {/ H7 j* [$ w5 F
;;
暂存新的一个全局声誉4 M6 K# L: U  Z
let i 07 m7 P* i  W- B3 H
let sum-money 0! P$ t& J2 m" f) f& p
let credibility-money 0
! ^* f# p( [5 \4 |8 zwhile [i < people]4 G1 g1 P) x$ ?* F  Y5 |4 K
[
4 b& x% ^  I1 d  eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* w1 ~9 Z$ ~( f! |1 [set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- U7 j: E' z7 f1 a0 q8 L2 h( [set i (i + 1)5 U- h+ Z) j( L, h1 i9 k
]2 C) w6 n/ X% @4 f$ i; @6 v
let k 0
* g, q7 K( J4 M  q. O: _let new1 0# Y3 p/ d- w* `. P0 i
while [k < people]
0 }7 V% j# |, T[; F$ v) {8 e, X
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 }; E1 K* J  N  T; w
set k (k + 1)! r/ r4 Q0 X" l6 ]4 t7 E, P: H
]) g) I2 g# D% r1 ?# x+ S7 h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   H0 ^+ T2 U+ V4 P6 z8 r
set global-reputation-list (replace-item j global-reputation-list new)
/ q$ ?, V6 Y" N  q! jset j (j + 1)
! d; D# @( d+ i8 J1 A% l' A. x]* T& @, U+ f' q) n3 M. z
end$ p: q( U% a3 ~% y& o- u) E3 }

2 |' [- C3 W: v- Z2 ]* z  c5 X% Q) g; x- J" H
6 ]7 h! }  L% P$ D
to get-color% N- ?$ d* Q. _

& e- C% _  t" u+ x# g, Sset color blue
! S0 s1 Q% s& G0 p
end, G5 H, _2 }5 S1 u+ Y
+ ?' i9 c+ H4 G5 N6 p8 P) F
to poll-class8 _" _7 c/ ]2 |0 r
end1 u2 t1 a% x* H0 V
# @$ x: g- w" o- V
to setup-plot1
+ |- k  `( g* d, s. |+ e" M5 s$ q& i5 m
set-current-plot "Trends-of-Local-reputation"

+ s" x: A& h& {  `7 |; J" `
6 J! x+ Y, C) b- k6 v8 j. J6 d( cset-plot-x-range 0 xmax

; l# T6 p: e0 g+ S4 [4 S/ G- X5 S0 |5 r
set-plot-y-range 0.0 ymax
$ q! I. |/ S- n0 I' `1 P" p, I
end: }/ D9 {, v% p
) ~( H, \) u. T4 n" ?( f- b
to setup-plot2) ]4 f9 C- Z0 {) S# c8 t

) n9 ~1 F8 ]7 P% Vset-current-plot "Trends-of-global-reputation"

. B9 ?' f; V  v# ~; B7 x$ G$ I! `
5 s" W# O0 f% Z5 D9 q3 u; Bset-plot-x-range 0 xmax

- b; w3 M/ ^1 W1 I' {" p9 o+ @8 ~6 i' ~9 V/ T
set-plot-y-range 0.0 ymax
, M5 r/ M- }! |& j/ M% j' Z
end5 }$ A9 ^3 z- M7 _" o

- i0 d  y/ X; s" K. o# Mto setup-plot3
% W$ b- W/ v8 k2 k! g- v# |9 |6 \! Y- h% e5 m% W* t3 H8 Z
set-current-plot "Trends-of-credibility"

8 p' r3 S" z8 L4 O0 b! T+ |+ Q6 u: L9 i7 V
set-plot-x-range 0 xmax

2 X/ W1 a; o( G0 R; R: [
8 I# ?1 e1 k/ J3 w$ w2 E1 mset-plot-y-range 0.0 ymax

* ^( c& P6 T2 }4 Oend
" K" h% z. p1 ~- ~+ z& g; c7 k/ N# Y* c
to do-plots6 n. b9 F# v5 t( g
set-current-plot "Trends-of-Local-reputation"1 @6 T/ U0 G  H- @
set-current-plot-pen "Honest service"+ C* {; W9 }& }# E' e
end
0 h9 I' r4 r$ m% @
, p9 W3 y3 I0 U[ 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.
. E3 u0 p9 n6 C# [: U8 ?2 N! }
1 \+ F) O! c# y  v8 _4 r8 _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, 2026-8-5 14:13 , Processed in 0.021318 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