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: 11585|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:
, e' L  J6 E6 Z* B# {+ }to do-business & @% T( ?& {- k
rt random 360$ y! X, r2 G4 z& v, q% h! O$ d! R
fd 17 \# r3 {% R, `5 U- A; S3 Z% M7 g
ifelse(other turtles-here != nobody)[
/ a" u3 {# ]" _   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.
; z4 f4 @. l/ W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & H. P5 r4 r2 X, r" W0 |0 D7 V
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* ^7 r  S7 n, h1 G) K) p5 y" M. U8 z   set [trade-record-one-len] of self length [trade-record-one] of self' |+ \2 Q- Q$ B
   set trade-record-current( list (timer) (random money-upper-limit))
4 O" m. l: ^5 l% G# w! K. ~. @! W7 ]2 [2 C2 R
问题的提示如下:5 i; t, B; w  {3 E3 Y  B/ g. m

0 S$ k9 ?) Z2 perror while turtle 50 running OF in procedure DO-BUSINESS
8 s3 d$ O% _, d$ \& S  called by procedure GO+ _7 ]% J# N* S
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( A( g( P; H* X" i
(halted running of go)
& }& [5 `4 C+ [! c- F
' D1 L* B, @7 C& J9 Y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~~/ o  \9 d& c$ \
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5 c# B! M  T7 L" c
globals[# P# f7 I  U3 G3 r
xmax
/ L. O: U% S1 d! Aymax
: V/ d/ m% m; i& _" U9 b& L; Zglobal-reputation-list
- i2 \! }9 h7 u) G1 @5 i, h+ a$ O( |8 _( \  p
;;
每一个turtle的全局声誉都存在此LIST& N9 g' T3 g1 c* h, C1 [7 g/ Q
credibility-list6 C, U* s/ V$ k, w$ q% M
;;
每一个turtle的评价可信度7 F2 `( p& W+ O3 S! v2 {: x
honest-service
7 i& L5 g7 [3 {3 `- h, `' P& ^unhonest-service
$ l& J+ s4 X  z2 X+ P5 e6 u! V  goscillation
( l" i; @7 s( l# q- xrand-dynamic
5 r) A- Y8 ]- h/ V7 H# |]  A" m. S% J2 p9 K! V9 V' O

% E5 |9 |5 Y2 B& h, O) Pturtles-own[5 x, ]8 [4 G6 t. P/ l$ N' T4 K
trade-record-all
( \+ E: I' I+ q7 _( V+ a2 F;;a list of lists,
trade-record-one组成
6 e# F. V: s3 k9 N: M% Xtrade-record-one! {) i- W4 V- Q% I3 T, i- V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ F5 [  \) @9 p0 ~2 `/ I1 V* N
& u, ^  p* h% s$ K9 x, t;;[
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]]  v0 G* L' q7 n1 _
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]
. w  Y- o0 G" Q* i; O; `9 w# Q+ Ocredibility-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' F$ B. M* p4 u- ]  ]
neighbor-total! Y4 y% H8 g8 ~/ L5 B5 f+ t  m$ c" y
;;
记录该turtle的邻居节点的数目1 v1 I& [) Z1 Z) v, N+ M! K
trade-time
2 l& ~" R' y) X  `4 j; j/ @# h0 ?;;
当前发生交易的turtle的交易时间/ a% W3 b* S) ]9 x
appraise-give! F: R  k( m5 i5 U5 f
;;
当前发生交易时给出的评价/ r6 n& {, ?. [0 D3 d& p
appraise-receive: W( x2 C0 U- E- u, f$ Y0 X/ p( {7 R
;;
当前发生交易时收到的评价3 X0 E/ u' p% _+ ^
appraise-time
$ E& a% L. P1 u; D) Y;;
当前发生交易时的评价时间* ]; ?; i0 H& S- Y( r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉; x, N0 @( y' r6 S1 l# i
trade-times-total/ o$ p. b  s9 S) k
;;
与当前turtle的交易总次数% J9 }2 v( m3 e5 K  h8 A
trade-money-total
6 x0 g2 }- x% x+ m* \;;
与当前turtle的交易总金额# M* u' Q! K0 c: V+ C1 p3 K
local-reputation. f0 s! \8 V  n, R' N7 c& q1 U9 ]
global-reputation
- U1 r  E1 i/ \3 l" P8 D2 Hcredibility
* ?( L$ v* B5 ?+ };;
评价可信度,每次交易后都需要更新( r- k4 O( N/ E. v. I* H/ X! J
credibility-all! i: T3 ?- R5 z. f2 p
;;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8 e6 q, f6 R& m. t0 u
- A3 b# s8 t( ?9 s) X
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.55 }' q# y8 @6 h+ [, i  o
credibility-one
3 u0 X0 h6 p0 t) B2 s8 v;;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
) |6 o! Q8 R# C/ x. hglobal-proportion
) q' L& d- z2 u" U6 Rcustomer9 e/ p0 t4 B) _' f# D% C
customer-no
5 X! {' t, e. Jtrust-ok
* `! b4 x, k7 Y' f; F1 R  Ctrade-record-one-len;;trade-record-one的长度3 ~1 R+ c- J$ k0 F
]
6 ^/ A1 G( |8 t3 v  B6 p2 b& ]4 s7 ~
;;setup procedure
- j- p( S% L! g4 p7 u8 I& F% D$ {$ ?! q( l
to setup: n4 n, m9 T  W; \9 e  A
8 _5 u( a3 H# d+ v" ]9 p# U! e2 D
ca

9 ^. G0 C% v) U- _' y
$ Z- ~) z1 x9 }$ n" Q2 a0 \7 Minitialize-settings
9 E! b7 g4 E% x4 y! H6 `8 J! ~

3 z5 O0 k% v% Ecrt people [setup-turtles]

0 r8 [8 ~% C- X8 V" ~) l. Y1 r, Z6 v" Z2 ^' s( K$ `/ |
reset-timer

/ k, ~+ z, T1 `0 c% s& E" J
3 H' f9 C9 B0 F9 C5 S6 Apoll-class
8 r; e9 c3 V( c1 u; ?- Y

/ W- D" D( u2 hsetup-plots
9 x/ M# r: T+ d, G9 |( r& V

4 h4 }, L4 i/ W% Q( M& e. vdo-plots

" o, A7 y- o" L) d5 ^8 ]" jend
; ]# w4 }7 w- c, N' e
& H, Z; E, y9 ?3 E% S- yto initialize-settings
7 [6 M2 H7 w- P8 v
/ s& @$ ^! g7 L7 w- ^set global-reputation-list []

8 ]( [: z, P  }- ?/ {. X" e; y1 W2 O0 W1 G9 u/ Q( ^( ^" j
set credibility-list n-values people [0.5]

3 j7 f1 u% b3 B$ D8 q: m- f, _3 b  ~8 G7 w  Y8 Q
set honest-service 0

# s) @* n+ v8 n' s5 e7 [- r3 h5 m! ~& a' T
set unhonest-service 0

' A: U  ?+ g5 F# [- y( M; K0 i) q3 d$ ^4 B1 k! O& F
set oscillation 0
  f' E& m3 F9 W/ P$ r8 }  W

6 a8 N6 n; `3 }6 rset rand-dynamic 0

8 \9 a' V0 p' n) ]# e$ Rend6 Q* x0 C  P5 v0 x" `$ w

" M- f. f0 B9 t' d* ]1 Z6 Q% {9 mto setup-turtles
+ a, U5 l8 q" D9 T. d0 B3 ^+ Bset shape "person"8 r% l2 `# m+ w! u
setxy random-xcor random-ycor- n+ l9 S% Y% ?3 E3 X2 {, V
set trade-record-one []
0 v' n( e- R; {8 Q; l+ P  l

) ^4 s- t3 B6 k# {2 w8 fset trade-record-all n-values people [(list (? + 1) 0 0)] " U+ n, p- I2 O$ c

0 ?# K. d/ J5 k1 Dset trade-record-current []
% W% T7 N/ d  I: l' x6 D7 Tset credibility-receive []. f3 a: W1 M9 B6 x* E: I* `
set local-reputation 0.53 j  ]0 |& J8 f- {3 J
set neighbor-total 02 M! i6 ]7 a* R* \9 B0 R- v
set trade-times-total 0$ P6 Z$ M* y' `
set trade-money-total 0, M5 I! j) d) F" o' V. I* U4 F
set customer nobody
% S' X) {+ _" _3 X% h: {set credibility-all n-values people [creat-credibility]# X0 X$ I! d. [. }$ \, R
set credibility n-values people [-1]
3 o* m" o7 K4 }6 `' {* Wget-color* M- T9 z8 Z$ z/ e; K! |, z. ]" n
2 F" M& S8 o$ d* l) `
end
! S2 r3 ^7 O2 q5 w2 _- d' a- U0 M% j+ S2 M3 D, L
to-report creat-credibility" A& O6 W+ [: T! L( p" _7 a8 s
report n-values people [0.5]
) @9 t; Y+ o* R* Z0 _& gend
$ {9 T7 a. q) q% I5 w
4 Z/ ?! S) O' I$ p* k" `to setup-plots6 h3 |% a& h& m0 o7 t6 e
+ w0 P  _$ g3 Z( r
set xmax 30
& e. S+ K0 c& x$ m. x' n

; Y0 y8 d& Q( }  U4 R' B: xset ymax 1.0
2 Z) A% ]) X2 T' F) N: i

" g( p8 Q  z! f" j6 ?1 R- n8 Bclear-all-plots
( Z; X' V4 d1 w8 g8 G; G
+ ^# L+ o! V0 ?3 h( z
setup-plot1
9 C8 I1 t  }- X( O2 Q
, P9 ~1 J" ?6 ^6 Q  x, _
setup-plot2
, N  _8 {, F, M1 a  U
4 w. I( h/ A3 c
setup-plot3

: Q" I  t$ r" \- M4 kend
  G2 D, G8 D0 R! s5 W* q2 c6 T" V! a
;;run time procedures
8 T* A  D# K4 _1 @3 `3 `7 u3 b( f9 ^# k% s" S7 h8 e4 X
to go
5 K; X) A2 S; H4 ^* T) @: r. w3 R+ }: ^
ask turtles [do-business]

3 L3 G: x$ i: M' @$ I- a: ^% x3 Cend
  S; @. Q' H$ ~/ e) e% v; S* C' U  L- r
to do-business " r7 i% D$ _: {: ?

6 d. l3 q3 k0 ?: W8 \; ^" e: p9 t, I$ R  q, G, b; Q
rt random 360

1 H3 G2 E7 `( h& {0 w# M
/ w# i& v. R7 P& v; m# L1 b; u6 Bfd 1

. W& ?" f2 v/ O2 i( c5 P$ g( @+ v4 b$ `" W
ifelse(other turtles-here != nobody)[

* Z2 P- W" p: `: @' @" L; h
/ Q  `" ^/ {1 g, L( w" pset customer one-of other turtles-here
* z7 K- a9 W& |9 l

5 f! b8 f  a7 n& ^6 {* g;; set [customer] of customer myself

) ^& _( I6 p& M3 u) [3 `4 E6 w/ [7 N
set [trade-record-one] of self item (([who] of customer) - 1)! t' Q. v7 H  q, v
[trade-record-all]of self
7 O: o4 J' C: H& f1 p' r" n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* t$ d. Y) ~+ t$ A- K, B4 e3 U% J' Z6 g% ?& N
set [trade-record-one] of customer item (([who] of self) - 1)9 o( C) ?$ q) d: M% z7 x
[trade-record-all]of customer
7 _: M3 O1 C# o7 p

3 j' [9 ~3 ~+ C# i0 Bset [trade-record-one-len] of self length [trade-record-one] of self
+ G* E6 b8 A4 n: |; H# X' ~0 M2 \

- z/ T1 {  e- Z) {set trade-record-current( list (timer) (random money-upper-limit))

* D; ?" [- u: Y- x; \+ i3 {8 U
% S& \+ m; h! G. U$ E4 V- D. _! Zask self [do-trust]
9 y) ~( y: j& B4 x; c# y;;
先求ij的信任度8 }9 }" r% ~7 m! v$ y+ v
2 i0 h" D0 j: K/ S
if ([trust-ok] of self). V# o# s! z3 Z: s. j1 E6 M
;;
根据ij的信任度来决定是否与j进行交易[! P& c! b, b  q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& W' {, B/ e( `& w" M* h. h1 p! A' j8 i$ B! Y8 N. P
[

& q: |( |7 M8 K
! ^- _/ |! _' j% N  g9 qdo-trade
- A2 H- P1 \8 |4 V$ c3 l. O

* d7 r& y( C* Z# }( F3 z) nupdate-credibility-ijl

+ `4 X- X" U9 l) r5 X8 _
! x6 w9 o9 N% h$ ?( }1 |: ?1 W: wupdate-credibility-list5 U7 S3 ]( ~0 P& r3 D- R
1 D0 S2 G/ z# K

8 n3 g; P$ z5 `4 B( H  \. Nupdate-global-reputation-list
. t/ N3 T( E4 a  P, ]5 o6 k5 r
' ?8 R' E3 y! u- v: V
poll-class

2 F* H* x% e) R' }! Y' ~2 c) o4 }; I. s$ e# o! z4 Y% N1 R
get-color

' g8 h  r9 Y9 S7 \. K0 \3 ~  i( s/ F# U4 F
]]
5 {6 T/ d$ h7 l0 M( c- {( B, L6 r/ g$ n+ z7 y
;;
如果所得的信任度满足条件,则进行交易
6 ?* I# ^& X0 }" f( V: Z% s* }# v( j6 q, b; ^
[
2 e9 {+ C' ]$ l$ U

; P4 l* q) }* U& }2 ert random 360
; }# k+ |, S- l& k8 q

+ `4 |/ r: @" Ofd 1

3 ~  Y. q* c4 F- B- _( \3 V6 X2 s$ q! j0 a- A* v8 {1 o; S5 V
]
2 x+ G4 l' H, D$ J2 y8 ~" k
5 `0 q, R7 \" I8 L3 v/ ~
end

6 ~) g) a" h( o: I0 P* z- W7 `7 U+ g
to do-trust / H" E4 B6 W6 p- r: p- J" [$ J
set trust-ok False( d1 b. A* t! j! m% [# a

4 x7 Z, B' C: R# X8 @
: y1 y) a& }& t$ t
let max-trade-times 0
1 O% p1 H5 Y, H6 g* yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 V6 u# G2 L( r2 G. B7 Blet max-trade-money 0
+ `* {- @2 `8 ?+ i2 g3 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) l7 W( I$ o' J' E) R' f5 [3 n, Q4 _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
0 S4 u" M& _* F4 j4 {% U$ ]
9 z# _& s% \7 q

3 D0 K: X- ?  A' j- fget-global-proportion8 p/ K8 V  r: Q& w/ H; y
let trust-value
. s, K- F. v  rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

; u  ]& e& F8 A! Q/ ]if(trust-value > trade-trust-value)' ]' W: b5 i, Z' P
[set trust-ok true]$ x9 P+ B. B  _; Y$ n' l( h# l
end
( `0 v) ?, @; b. z2 g/ f
2 Z1 J1 ^1 r, A$ eto get-global-proportion. O. t% u' d2 o) [% R& D6 a6 B
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 q- Q4 j' i  y[set global-proportion 0]
2 J# \) x. |: z1 J0 m[let i 0( M8 Y! h, d6 ]( \
let sum-money 0( Z) T+ c  d7 U; H
while[ i < people]2 v8 s  g4 j0 N2 A
[
" c. c6 ]" A; v5 N/ N5 C3 aif( length (item i
/ v2 u) o5 a9 R[trade-record-all] of customer) > 3 )

% \3 G- K* K6 ]. R+ u[
9 }& ?7 _' ?. y7 v+ [+ L% Yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. n5 p9 {7 V& Z/ T, ]3 n  o& U  U]
, L  B: ?2 ?: b% Z7 G0 @]1 b, a" X5 n+ F/ B- V5 R3 n
let j 0  n3 g1 s3 X: J$ q9 g
let note 0# M* y- c- B3 U. V0 g9 M
while[ j < people]
; _: @$ }* v1 L7 L$ R[
* w+ l* Z* _  w5 e" {if( length (item i2 o$ r3 ]/ E# J. e/ G
[trade-record-all] of customer) > 3 )
. p8 y3 c, `1 c
[/ b8 D! q! P( D1 v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  E7 [& ~. \5 b  Y& x: ?3 g
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  t+ V( R8 s" }7 c; u! o: o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 a$ ]+ u0 ?; W* c2 a2 n1 E]6 J0 D9 U7 f  |: S
]
" i# @* K# }) @4 A3 vset global-proportion note
6 k5 K: T; r; y7 U/ J]8 c/ T3 ]+ m6 w1 }( x
end* l( l5 s* E/ Z: w( G( o
% g. v: @! ?, m' \7 p$ r' g
to do-trade7 ?5 ^6 q* D5 j$ @5 H& ?# P. ?4 w
;;
这个过程实际上是给双方作出评价的过程
7 [7 N7 I' O' _! Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 r. P- @0 [$ b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 t0 F, d6 ]; L7 D7 t% a( _- v- x" j% uset trade-record-current lput(timer) trade-record-current
7 s: N# U$ v+ @;;
评价时间  X8 H# n- k  o% v- Q. c; U
ask myself [* r, v. _/ K) x5 f# E0 n
update-local-reputation( F  }. T1 @+ @
set trade-record-current lput([local-reputation] of myself) trade-record-current5 R( c7 E$ ^. u# T8 L/ M6 L+ B- j
]
% U/ T. D# M. U( A- a  o4 tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) f7 e2 X# Q- q, B  o
;;
将此次交易的记录加入到trade-record-one( X9 ^) E0 W7 W7 E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 [0 \* q, B& ]& I' Elet note (item 2 trade-record-current ): t1 X' t) B/ p& K; f2 T: q$ H
set trade-record-current0 K' L; L- |* @3 X: |; U+ H5 u& c
(replace-item 2 trade-record-current (item 3 trade-record-current))
% ], x5 r' q! E. o* ]
set trade-record-current
/ Y' Y' a- B: M; s(replace-item 3 trade-record-current note)' O" h7 _5 Z# c: n% P  ?; L
# Q! K& E; G4 m/ v# [

: y8 M7 N6 v; q# M$ H: y) gask customer [
% q% W$ [' D6 |3 q. Supdate-local-reputation$ f! O% n+ O# |* A
set trade-record-current" P; G% u  ]) r- ^) K) ]5 r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
0 G- [$ s% I7 X: a
]' {4 ^) \5 V- a- F2 b
: S( R# r! T$ F  d+ a
: d! I& n) x4 T+ X. R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ [8 u, D5 {# l- U) m

- c. z+ ^, T0 A6 y6 i: iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% x# K% e" Q% x$ ^7 e8 e;;
将此次交易的记录加入到customertrade-record-all( L* l  d0 B9 L% |, d4 N8 a
end- k" S  i! N+ V. C
& g, b6 Q1 M2 q: [- u" \1 K# e% I
to update-local-reputation
2 {9 s2 e# d+ m2 f0 J5 K3 vset [trade-record-one-len] of myself length [trade-record-one] of myself2 D% ]% x" @% ~

, ^0 e1 \, ?: _$ D/ ?" s# e
: O$ L$ u: m3 B9 ~5 t! t2 }" }, m;;if [trade-record-one-len] of myself > 3
5 R$ \8 Q; |% q, g. Q  `; R5 S
update-neighbor-total5 A# ?# f) E3 o: O% {+ G
;;
更新邻居节点的数目,在此进行
# g+ Y7 u) f9 d8 `  v  j/ l/ `let i 3
2 p% P! A, X5 e& j8 M; x# Q) N: ylet sum-time 0
+ c3 ]# q1 w/ t" }0 fwhile[i < [trade-record-one-len] of myself]
/ I6 {8 I/ i; }, P; B. T[0 Q( @4 m$ L. v( p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 e$ G6 A5 I2 }: N  h2 W
set i8 p+ p6 W1 }# V; @
( i + 1)

( U2 I- M. ^2 _: |]3 z  T- s/ l- @! f4 S) Y
let j 30 m3 u' f8 J+ {5 U* t
let sum-money 0
2 D/ M) Z' P& t0 V; e4 w5 u) hwhile[j < [trade-record-one-len] of myself], U0 C5 I* x2 m9 p- \( _
[) H; p3 F$ X, Z0 g% o4 d  J
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)
  Y* H4 M% J- ]8 t/ c$ Kset j
  t" _3 ]; V7 F( j + 1)

/ e) s: t( H1 n1 X$ s; t" p# {( c# X]  Y3 q' Z2 c$ G% t* ^) `4 s
let k 35 o1 R6 Q. j1 {. j2 u5 p/ t
let power 0
! V' r+ t2 N7 v3 S& U" q% S+ L" Klet local 08 i6 q* T0 O1 d  A! M
while [k <[trade-record-one-len] of myself]+ n; @  {* s6 i* P3 [/ ~5 k5 G
[, L6 \& m1 U& A
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) 9 {( i% ?. D) P* v/ C2 P2 [4 M$ e4 L& @) ~
set k (k + 1)
1 ?; `$ r# u6 Y5 t]8 M3 X% {- |0 g9 I/ T& M( f
set [local-reputation] of myself (local)
6 [) {0 y' b8 \2 \! k" ~end( D# X* q, }" A+ r# {
# b0 B0 W6 R  h3 Y: s
to update-neighbor-total
$ L5 ^2 D0 D* O! r- b8 J  |7 A9 p' [& t$ t1 e1 g" R( t. q+ U8 Y+ w) U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ B$ M) e9 w# H) j2 @3 C7 b# ]7 b4 ?; v

# f# _- R! U2 J: m7 zend7 @/ k  c6 n4 k" @7 H' Z) N7 j

: y# _: y& i- f8 ?to update-credibility-ijl ' @; E; j" X$ L; W
1 s$ t+ t+ s  a% |( E& W
;;
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。+ k* d4 u* q; y9 m8 m* g% ~
let l 0) J1 Y% |) G3 _* m
while[ l < people ]- B. R& Q* x7 |6 X5 m
;;
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
+ S8 a$ X1 ^) T5 U[
% I6 P) |4 a9 a" B9 x' `4 ?3 Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)  M0 r. S* [" p' h. J; B
if (trade-record-one-j-l-len > 3)2 G! a( L3 t3 @* b; Z3 n
[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% U  S% O- h' M* ^( t& _
let i 3% W) z7 Q/ F* k, o4 v$ `) U8 j
let sum-time 0
1 @; [' q8 I# O/ a- F# Pwhile[i < trade-record-one-len]) g  V, y0 j- k1 G- H' @2 g
[. W- Y, U3 W- M: v* z5 J
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) Q4 v- o# _1 X2 |; S4 mset i
) ?% d+ l7 g- [5 _, {5 D( i + 1)
* U% i* _- ~  q- y2 s. _4 G' v
]
7 H6 D2 _" ?# ]" x1 d* X* s3 Nlet credibility-i-j-l 0
0 u) |/ g/ I: ^; j6 g;;i
评价(jjl的评价)
* m/ I8 u4 @# a( ulet j 3$ S+ |  C: k/ [/ E
let k 4
8 {, T. Z# l  Z( e% Jwhile[j < trade-record-one-len]7 L0 G2 h& ?: `0 P# p9 H. o4 o* ]
[
, c- U# D& f- i# S+ R- |+ v  @while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉6 n! i* T6 D$ _0 |
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)
$ |" H' ?1 g- y3 [3 b, Cset j
5 B' e1 ^  u4 q+ I* o3 K3 r( j + 1)
- \, E3 |/ V1 g% O1 j3 |$ _1 Y
]  P* x- S* H4 G
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 ))6 s; g' ^  N- @* e4 L) [) l
' b: q4 F2 N) t( x' |" G

- u& e, i7 p2 d5 ?  K  R$ w  D' w+ ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ @; H" r' \9 J  s+ i. O;;
及时更新il的评价质量的评价' {1 T3 X' c0 G
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# F+ X1 |: d! f" K- G* mset l (l + 1)
$ K2 i! V2 y) c. \]8 @( S6 j9 g5 x4 e2 Q: W$ C5 o
end
& N, Q8 @  q8 }2 n1 J. v+ u4 `
' d* |4 l* y$ H9 l, ?* Rto update-credibility-list7 G' s  k/ B. T# b$ J
let i 0
  D( D! Q. Z4 s3 k' {while[i < people]8 ]7 p3 M; t+ ]$ j" g; g& f. A
[$ R. o& \2 A* Y+ I2 v
let j 0% A" Q, c+ F" s  B- }9 a0 ]- Y/ X
let note 0  n$ N3 o) U. i' R8 e- r3 ]
let k 00 V: K/ B8 x' k2 A) U8 H8 I9 _' N
;;
计作出过评价的邻居节点的数目
6 D0 j. j+ c/ \* e6 gwhile[j < people]6 ?7 s0 l9 ?3 O; D* U% f
[
) p* p0 U' f6 o3 k" O7 gif (item j( [credibility] of turtle (i + 1)) != -1)9 U1 @7 M) @0 B# w
;;
判断是否给本turtle的评价质量做出过评价的节点
2 P, w( h: h' T6 z( x& u8 i" A[set note (note + item j ([credibility]of turtle (i + 1)))' e/ j6 m/ c; S$ H2 c! w$ ^
;;*(exp (-(people - 2)))/(people - 2))]
! f& `$ |4 E% b1 M( Y/ G
set k (k + 1)  {% y0 q- @0 U7 Y) H# W* N
]
( C+ o3 v! B' q: rset j (j + 1)& N, }9 x2 e! Q8 c. j9 w# h
]
1 k3 X) q. W" Q9 l: t9 Pset note (note *(exp (- (1 / k)))/ k)
* C0 B: e; J) i8 aset credibility-list (replace-item i credibility-list note)
" i6 o6 W( ^/ x8 c2 y; hset i (i + 1)
0 B6 t9 ]- f0 x: ]3 q]' @2 a- g6 G9 ~* f( p; c  o5 d
end
- p% `5 {0 w( ^2 X2 _: j! I6 O" W  M2 D# h
to update-global-reputation-list8 V3 }# g0 G% e/ C, o
let j 0
& `: U) b: x( Z2 ^while[j < people]; t9 Y' U# d) k6 }6 e: ]/ p7 g
[
- ?& p3 n$ P1 @. P. S% {let new 0, B- D7 W% _* y8 I9 h5 q5 e6 y
;;
暂存新的一个全局声誉
: l. r. J0 x+ L) |1 |8 _let i 0
7 u  j* _3 B* U4 j, I) ^let sum-money 0  C/ p3 E4 H3 E' E. E8 a! F: \
let credibility-money 0. m9 @( }  n8 s
while [i < people]9 }! ^7 w. W& l; j% x  f& X& z
[
+ @0 t. h  u  I  Q8 bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 ^  x+ L0 F7 x' r
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 G4 V) F- N6 K
set i (i + 1)
% K' `0 q6 S* Y% i& Y1 d* d9 m]
; a# u- j( t& M! }& rlet k 0
4 O$ ~2 {+ |$ x; L; Z7 |' W$ blet new1 03 i, B8 i( \- ?* Q
while [k < people]' F) m4 {; b& Q/ u; d4 o2 ~
[
! T6 L, T. f# b5 y+ P0 V) pset 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)" I8 }1 n9 W" n' z' w+ s
set k (k + 1)# P/ ~9 w2 q! |' v9 z
]* @, d# @! f4 u# a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) x& ~& T; m! B
set global-reputation-list (replace-item j global-reputation-list new)  l/ O! @1 e! k  |; o
set j (j + 1)
/ @4 k+ z- X. n1 b4 i]1 \2 n& g9 p" G: M8 O
end+ N1 P& L* v' A! y' V! q
/ l6 ?- b: {5 v, x

' ^& t0 K* ]2 j  N) a
4 X+ u6 z/ |6 r9 n) B* H* Ito get-color
; {6 \: y5 f8 \1 H7 g  A# V6 ]' Y( e  @. S. C" J! E* a
set color blue
2 h8 l% Z0 O% I
end% x: i9 E+ N7 K* f+ V
1 l4 Q1 n/ p7 m! }8 x
to poll-class
+ y6 F# D- J" O# H2 X- K+ p2 oend
  D. ~6 z& p9 }! L% ~# }4 [
0 F4 ^& u. Z" S% ^to setup-plot1, d; }7 l* O' z8 W, [( E0 r: b! f( i
- T7 h1 m  j6 p4 [( v! r
set-current-plot "Trends-of-Local-reputation"

0 e: h: Z, Q8 v: B9 x* c1 @# @% a2 Y, Y1 C
set-plot-x-range 0 xmax

4 F5 Y4 O% p+ j/ W# O9 x1 @5 x" `8 \8 u9 R
set-plot-y-range 0.0 ymax
; H7 J- U* f3 n3 N/ ]: U
end
4 _! \! v" U5 d% q4 L7 O3 Z
- B4 ?) Q' @; V; Y9 |to setup-plot2! l' H( l; s  ^

' ?# g9 s0 ~- U" v6 aset-current-plot "Trends-of-global-reputation"

/ b8 u9 e/ j0 Q, P0 i" w
0 j9 W3 J3 }4 V. {5 s: Jset-plot-x-range 0 xmax

, H4 L0 l3 {: t" v, ^1 l0 s1 l; C9 c) m3 {4 a
set-plot-y-range 0.0 ymax

; p% u$ f+ ?& F* ~end4 b/ I4 _, k8 ^. A. J
! y  f" k5 H  Q, _1 K+ b
to setup-plot33 v% n2 Q& R& _+ D7 k2 b) A

" A" E( K7 @- r) \6 B: Z1 qset-current-plot "Trends-of-credibility"

% o0 ]- t% I" c7 F9 q0 i  U* N0 x% X) f; k# r' x
set-plot-x-range 0 xmax
% l4 \4 r' o4 [, P+ m1 x

4 |$ e+ E6 c8 bset-plot-y-range 0.0 ymax

# r/ \/ r' G8 m0 Zend" P/ o, f# w$ G3 x$ `+ y

& r' l- g  s. O( Ito do-plots  A$ M1 B9 k) v+ {
set-current-plot "Trends-of-Local-reputation"
. I7 a8 a6 w4 M; a% u1 u: W, c+ aset-current-plot-pen "Honest service"
  P# b5 n$ \* A+ Jend& K* o7 ?* ?* M* E  j

* `9 ?$ G' g! \- ^3 p# Z, X: a( H[ 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.
, w' k2 v4 R; v$ J+ r
" E  O2 o0 l2 Y* N; ?: [- 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, 2026-1-24 12:23 , Processed in 0.022713 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