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: 11962|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:: ^4 F1 J' p( n" S
to do-business
6 \+ Z" m1 R3 L rt random 360: s4 j+ D6 b1 m! h( B+ t5 f' M3 X
fd 19 h& G  x5 c0 A1 J
ifelse(other turtles-here != nobody)[5 w5 }$ V/ l0 f. }4 F4 u
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.2 e% ?- n( e4 l# V6 ^; N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& P$ ^1 l6 B# i5 q8 Z5 s" l+ b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: v* n0 N1 u) V' I1 E
   set [trade-record-one-len] of self length [trade-record-one] of self
: r/ F5 D, ~8 t! `0 Y& J$ [1 m   set trade-record-current( list (timer) (random money-upper-limit))3 l: u+ r3 |+ l" o' k* V& f, B
; o* z6 v2 u% o  t' R
问题的提示如下:" |' D5 y0 e7 r! O
* S3 g- ^8 X$ @, g* K
error while turtle 50 running OF in procedure DO-BUSINESS
/ g- b8 M$ {- ?5 L1 [  called by procedure GO
, u6 _2 d  M" ?0 _9 G# lOF expected input to be a turtle agentset or turtle but got NOBODY instead.
# i' n. _) p- n  j, J7 C
(halted running of go)
7 X" f- V) A. r1 h! a
3 t, a+ E4 j2 _% X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~~
" w! h+ U( x: b: Y* }  _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
% N1 G; F8 `+ {, {6 Hglobals[: ?9 [7 i  o: x4 Y3 T* ]
xmax7 y2 c7 S7 j2 V8 Z
ymax% _2 K" w4 _0 |
global-reputation-list& w* C- d9 d2 P
8 V5 a8 C4 f% R" H  @- R+ x( R$ o
;;
每一个turtle的全局声誉都存在此LIST. n+ |/ h  Z5 m7 n. x9 k3 ?
credibility-list
- D6 G( E. o  F! F; D& n' N% l;;
每一个turtle的评价可信度
1 m- I' L, o1 Ahonest-service
" \" P, b, }0 s, r* C6 Z9 ~unhonest-service
7 Z% ?: p. V# woscillation' d! e6 ?1 j! i+ E! ~
rand-dynamic
! l1 M8 r5 ]1 d, [6 u9 @, d6 s& q]
2 K& Z8 I7 K/ A1 g9 o: ~0 P* Q. S  W; x' I1 f; m1 ^
turtles-own[# V1 A  }: s) m% f( ^/ e  Z
trade-record-all
  _+ X0 Q; d0 }( F% `; h;;a list of lists,
trade-record-one组成5 W0 n1 g+ p" j: f0 z
trade-record-one+ n. k8 A0 _! }  C8 z- B# F
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) x4 ]$ H# r$ F) N  E
2 j1 {, k: ?" @8 I* D( X: t2 Y
;;[
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]]
( _/ s5 v1 |" l# Ztrade-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]- [9 [' {1 @* ?
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
* M4 H7 O) c* t1 Fneighbor-total) D7 ^% S  E" Q7 ~4 l6 J) v
;;
记录该turtle的邻居节点的数目- Y6 U% J5 J6 M. S  d3 m/ ?
trade-time
/ s; N# J" C$ ]* B  w;;
当前发生交易的turtle的交易时间) n. L: p( f3 V3 K+ {
appraise-give
: F) `, a/ f8 N  C;;
当前发生交易时给出的评价
8 b$ n1 i8 l. Yappraise-receive4 N2 `0 K& }1 G( {; K) F
;;
当前发生交易时收到的评价
+ J( }0 I4 V1 mappraise-time
' l4 Y8 Y1 K# |5 F;;
当前发生交易时的评价时间0 e  \* l7 ^" _1 w* n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, q1 h+ `2 |& {, X4 j/ ztrade-times-total
$ r; U& w$ M+ ^2 \% f;;
与当前turtle的交易总次数
2 L" o& X- F% Q2 ntrade-money-total
( |3 S% h: x: g" ]+ G, O;;
与当前turtle的交易总金额
5 l, E3 ~: t2 C3 N/ S, plocal-reputation
6 H7 v6 o3 c, g7 U7 Zglobal-reputation
0 d. A5 O' \( m" |/ v( ecredibility
! ^8 L9 j' p9 ]# ?;;
评价可信度,每次交易后都需要更新0 D# e" G. o2 o" U/ f
credibility-all& h. L# R; i; z
;;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3 K+ {. I6 {) a# }  x; X9 ^
6 v4 X9 e8 j  U" a
;;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+ f) T6 k5 ^( s7 X& \% ~. a) k
credibility-one
" c+ c: Y7 H  o" X) g;;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people8 s5 i4 C$ }# P0 v
global-proportion$ t% V' B  {; l2 E" H+ z
customer, X7 d" T4 s( i" m* C  ]: q
customer-no
/ o* i& o" |* qtrust-ok: [) K4 L! p) y' v
trade-record-one-len;;trade-record-one的长度
' s- _# J2 [" W( O. ~]
9 j  g5 i( o$ \3 i, B& P
3 N# M% \3 g& I1 u( [. _;;setup procedure" q  m: o0 w3 d6 d/ l: Y7 ?) E( Q

& q- f# \1 ^6 t; r" Wto setup1 E* p# q7 l7 ]& R3 C
4 E: L# R5 s( ~) c0 M' [  D
ca

' o4 @+ J: [% m' \' T" a4 A
. Q( E/ E9 [: k0 r' L/ q. {5 m" F  _' |initialize-settings

1 R: L/ q3 P- n; T# `
4 j0 q& n& u3 e- B* |crt people [setup-turtles]
! _: l" I/ }3 n! c

( q! W# S+ y4 y) u* Dreset-timer
+ X4 m. |# Q( I2 Y( P& d; k, x
0 l2 N! b& H3 @
poll-class

) F( _  R6 g  Z7 i4 q
# [  E( ?2 J0 Bsetup-plots
' n0 \9 Q: N2 N+ P/ |9 g
7 t7 x9 E$ X* W2 B) M
do-plots
) T, D/ P7 {+ H3 I. J# J  M
end
6 \. @  x/ ~3 O& W) y% N  ?# ~# I% e  p/ V
to initialize-settings; g4 h% O  b/ A

4 k4 J4 S5 P3 m: Dset global-reputation-list []

# a5 ~: o7 i+ e& K+ q- `% D5 \  t. x6 }) Q6 E0 w
set credibility-list n-values people [0.5]
' x; u& Y% r0 u/ _9 U; t* H

4 L* R- @6 `7 Mset honest-service 0

6 H: [+ b7 k. R* d5 T3 a0 g7 x9 R# {% ?, B, L4 Q/ F- J
set unhonest-service 0

, J, u- o, f0 G+ @% s
" w* t- |- U  u* v! F8 rset oscillation 0
+ H& O4 a7 \, m# T, s
2 h3 l) d% [+ N0 w/ I
set rand-dynamic 0

' {& T. `' p& ?# h/ Aend! D6 ?. R5 U! E. ]" ^% W
& ]. p( Z8 }# I5 v* w
to setup-turtles 7 j2 d5 ^# j! Q$ ]& M
set shape "person"
% o# ^, _/ M/ K' psetxy random-xcor random-ycor: i! E3 u% W$ O6 }/ u$ K
set trade-record-one []
+ S" k, }* ?% I; l3 o4 o) U# j% E# c

1 m. s5 l- p8 O/ x$ Y" yset trade-record-all n-values people [(list (? + 1) 0 0)]
1 `/ p5 o3 y1 w, [/ Y3 n9 s0 i4 t

* J* [, ?; @- @" x) }: {* ~set trade-record-current []- h- ^7 h: P; O' Q: i! @
set credibility-receive []: p& c( M% ?8 X/ u  m
set local-reputation 0.5
; I" D7 S# _; @( m. ~set neighbor-total 0
- \" {' d: ~4 W1 e, V0 kset trade-times-total 0
2 n9 ?  q$ I! L' N4 G$ Lset trade-money-total 0
6 Y- T1 _& a: u/ U: ^set customer nobody
. _0 r2 i. ]" b+ I  h+ _: Wset credibility-all n-values people [creat-credibility]
4 L6 M) t! b# q+ d" X2 l, fset credibility n-values people [-1]
2 s- L, |  e) T  a$ Wget-color
$ I' o0 e, e3 N9 |1 g

5 @: Q7 @: x& m' z& a+ {' ~0 Z: [end: E: \" {. O+ ^
6 g% {4 L9 \3 o
to-report creat-credibility
3 `( Q, E/ o& }, qreport n-values people [0.5]$ z" r5 y. p* t- z
end0 c5 M; o% u* g) x/ y- I

* b, q# U" c! U3 @$ ato setup-plots
6 @) u6 Q) x; f9 q& S; z, p4 `0 N4 X1 f! }5 X
set xmax 30
% k" V/ B' W, X+ o! T3 u1 U+ V# M

/ `8 c8 {) O9 ^% j+ ^set ymax 1.0
- C% c) d# ?$ ^0 Q7 E

& {5 B' Z( G- i( L% Yclear-all-plots

" f. y1 o! ^( P5 J; P, z. H2 @3 U. H' I4 i0 [* q" D( W
setup-plot1
- L% \# i& [. Z5 {" d5 N

- s, g; C6 a/ A5 s3 h: B, C" F& psetup-plot2

) ^9 s; a3 }) n( c- c0 _' n
+ C* J, `# U1 ]& {4 X& T" T* c: V: Psetup-plot3

2 B( s6 c2 x3 Y, @9 C: mend  w% P. [+ `, J2 u# M" P

! C! Y% d: k# W0 p6 U& R;;run time procedures
) k) G% d9 U  H+ ~( W' p& `4 s0 L# _" q* {) o
to go
$ O6 S# ?8 Y% l+ y* c/ M- t3 f) H( W# B5 n0 ?. s! `
ask turtles [do-business]

7 W) E: }5 q- N' V% V7 p2 Rend
/ W2 m; L: }$ Q5 P  o" A9 k
3 H6 W! A' O2 X2 U& bto do-business 2 d/ ?7 H7 |6 N6 ]5 {

  g5 @" M" _' c
+ ^( p" ?5 l, Lrt random 360

, e7 L+ \# _" A1 X  b! B
+ K* G1 L6 M( D: ]. i2 |fd 1

# x6 C. M) p( X4 ~: r: _5 M0 d$ X' q. A
ifelse(other turtles-here != nobody)[
* _) E1 [2 S1 k4 P9 m* Q
- x( Z' N' e1 U5 v& H! f2 |
set customer one-of other turtles-here
9 |& k) i7 g" N1 p/ E) f

: x6 X1 E% e9 O* z6 u  c;; set [customer] of customer myself

' o; v4 P* }* G, ~# x# D
4 M7 {9 D. Q/ Pset [trade-record-one] of self item (([who] of customer) - 1)( x8 ]/ J3 [6 f1 w
[trade-record-all]of self
4 x. |% `7 ?/ M+ L6 {1 x' i( W5 w;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! n! k1 ?  h, X# M
9 q/ f1 T$ z% O% L
set [trade-record-one] of customer item (([who] of self) - 1)4 i+ j1 d) _. z  e# [
[trade-record-all]of customer

) N+ _, v4 G: O. x! @6 Q7 X6 V6 U- e& G+ N
set [trade-record-one-len] of self length [trade-record-one] of self

* ]6 A$ e) X- c, q# b( T4 v5 a7 B0 |+ F5 X# _0 d$ Z
set trade-record-current( list (timer) (random money-upper-limit))

2 b+ g% E  o+ S9 }6 a1 S5 x* B' g5 M9 n. \" A4 Y
ask self [do-trust]
1 ^8 }& b& u/ b;;
先求ij的信任度
' L% |$ t1 h! {/ I* T0 m
- K# I4 S% l  G, r- bif ([trust-ok] of self)
$ k2 M( w- x2 Z8 @/ M. S8 T: i;;
根据ij的信任度来决定是否与j进行交易[
/ P; J1 w9 F; ~, S: B. C, Rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 ^4 R0 \; m- |6 A# q: p" }5 H: o7 q, G5 l4 X  }
[

# D6 G$ h% F: W  L! ?! w, S% l7 d1 I& T% W4 @0 N
do-trade
/ R7 t6 T6 ]  o2 t9 C8 [

7 N" E8 _1 \# M/ s* bupdate-credibility-ijl

% H# I: T2 [2 l1 q% y% B0 X" |
1 D; c" U( v9 [! t' Gupdate-credibility-list
; l/ b4 S0 u' P

: q: }+ ~2 h" o3 |; H5 V5 z8 I4 C7 \! V# O
update-global-reputation-list

( F7 g4 g7 \1 H( X
2 O/ f$ Q5 U+ F5 z* ypoll-class
1 z  c( H0 K% z6 ?* D" x9 G$ ]

0 w5 F! n9 g; R0 S  U' cget-color
3 [0 C1 a# H# G8 ~
' Y2 m) y+ j  t# W: c# W& @' ]- b
]]3 H% h2 O1 ^$ W* D& P+ N
5 z, W3 b2 z) }  x
;;
如果所得的信任度满足条件,则进行交易3 Y9 s) d& `( g" {( i, Y. |' @
0 Q- _! J& H: S, H8 e0 a4 X
[

$ o- A: A, F! @1 Y
0 N& F, J7 U; Q: i' |# Srt random 360

( E4 B. N5 \* V5 A, m' v) z5 q: h. ~" `
fd 1
6 b3 c, j& l6 B% Q: }  m. E7 x

( {5 n! @& p  {% X  _) ^]

, w. @) i6 e7 H* W+ {2 h* y: a0 _! C' Z, _" y  Q, C  Z5 E
end
/ A- P% s0 z& R: s4 A' U
: r+ v5 E8 v1 W" O+ z
to do-trust 2 M( d. b/ Q1 C
set trust-ok False
3 W1 {! C, C; z6 }( R
, Y4 N9 W# b7 Q; L

+ B6 [4 v& g! llet max-trade-times 0# C+ }, j# k3 ?: b5 Q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* R8 o6 [1 f3 o7 L3 ]/ Plet max-trade-money 0: O: r, X+ k6 |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% I& ?3 A3 N8 X; w
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( n. I8 Y0 w$ d

& X9 V3 v8 I$ p0 T" _
! z& R, Z4 M8 v* `, j) M  q
get-global-proportion6 h- Q0 Z9 J  u0 M' W& z
let trust-value
0 ]- P7 O6 w6 r  \7 @7 j# ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 T  {; p, c5 \: ]  _6 F5 Vif(trust-value > trade-trust-value)0 V) ?7 _' M0 `$ e( ]
[set trust-ok true]
6 k6 w; a% ^! O4 g: }) M) Qend
8 J$ T: m! N6 }" s1 Q. p
& F5 s7 w# r/ k( p+ g) U5 M, ]to get-global-proportion
4 m  a6 L9 x  r" P: J4 xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ N' _# c# M% S[set global-proportion 0]
! n- h% E" e1 ]* Q[let i 0" X5 u5 E1 `* Q9 `' [. v# S' {3 ]6 D
let sum-money 0% K2 G, s/ D6 w3 v, c
while[ i < people]
6 F4 {  @- D6 G( }( r0 G1 M5 Y[
* A4 S! s7 q  M) C8 E) Aif( length (item i
6 |# s  r! s4 Z1 Q[trade-record-all] of customer) > 3 )
# }4 F& S  L8 X
[
" q: O) \3 M! r& ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))) i, U! C; A8 s
]
6 U* l& M8 V6 G9 @' b. R6 R]
; P' f& D# p& P; `4 n! ^let j 0
$ |' L5 p! i4 r* q- Z9 i. \1 F6 Vlet note 0
3 v4 n' @. b' G; G( Mwhile[ j < people]
4 j3 t! q9 K2 U& y3 D[3 E# o: y3 r/ b- ^
if( length (item i' ~; a, N1 N- B1 p
[trade-record-all] of customer) > 3 )

, B0 m- s7 |$ [: v$ m. c" z[) a$ ~$ A. Y; G: l
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# T6 b5 s& T4 q( V4 u( I" y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
* g, F/ `2 ?( N" k! z1 C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' f9 C5 S- U- @
]- z+ U( c' W+ q8 @- K3 Q% o
]& b2 v7 f4 ?0 G% t+ @
set global-proportion note/ ~% X# D8 B" y4 K0 P0 O- m, d
]& W: F* w( _0 i9 L
end+ l/ b8 x6 }! K. A
4 U; t! Q8 i% B) ]4 C5 X
to do-trade8 Z) J% |( ~$ M0 Q
;;
这个过程实际上是给双方作出评价的过程+ q  W" i3 Z& t; G5 H% g
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- Y% }6 D, t- \  p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; T* [1 \' c. `3 `5 S8 Fset trade-record-current lput(timer) trade-record-current
  e" v1 }5 y( A7 ?; k& h4 S" l;;
评价时间7 M3 d" h" Q- S7 j  v" d: p
ask myself [
. |8 l+ F: T! j4 i, ]update-local-reputation
# P" m5 q6 f# y! [! y& X# xset trade-record-current lput([local-reputation] of myself) trade-record-current
) q' i1 m: x8 o]) e: D% O( _$ H) D: B& V0 a
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 ^2 E; L+ L) g# F0 G: _) ]
;;
将此次交易的记录加入到trade-record-one) j7 H$ |* d( r. B
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; L4 n2 r% }3 ~1 G: r5 ulet note (item 2 trade-record-current )
3 l/ |* e4 T3 _/ uset trade-record-current
3 u3 x' m* U. t5 ]& X. F(replace-item 2 trade-record-current (item 3 trade-record-current))

, {: \6 D. X9 e' p2 x5 bset trade-record-current
: L! o4 m4 y8 L, @6 R(replace-item 3 trade-record-current note)
. Z# u4 j* _- A/ }7 R; g- R4 V( Y6 x- S

0 R& T1 J- I3 k* iask customer [, p4 W* W& t2 e; {, b" @
update-local-reputation
& Z7 n6 U9 W" C2 d0 w) hset trade-record-current
, Y5 W7 k6 G9 z# Q8 e  ^6 V/ |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 U1 u3 d8 `4 ~- D9 J]
) a$ ^1 ~- y* j, z1 ^) n8 D' s% V: b; G" A( I

" b/ @  x+ T2 U0 ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer& G" ]- w% a: F* `7 D, E$ W$ v

4 P4 r+ Z) A4 v& n: y! U* Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 Q1 J8 z( [4 A* s" Z& S/ o;;
将此次交易的记录加入到customertrade-record-all) b6 g) A4 _* j+ Y4 X1 H! a# R
end$ a4 o6 s& d- {+ O4 Y
' n1 p. O4 P. G0 u
to update-local-reputation3 k5 L9 _, k) A! H
set [trade-record-one-len] of myself length [trade-record-one] of myself
6 h+ D; `. ?" L
* {/ U  R  h) [' P) C; Y  `4 u8 e) y9 A$ d# b5 a2 Q
;;if [trade-record-one-len] of myself > 3
/ ]! }' Y: T3 f! X" P. t1 D
update-neighbor-total
3 B' ^, \0 T6 r+ y5 r, z+ B;;
更新邻居节点的数目,在此进行
% P# y3 u' e5 B! A6 \- m. `let i 3* t5 z' [7 ]& n/ g
let sum-time 0
0 Q1 o9 h5 ]- r% I- [2 Fwhile[i < [trade-record-one-len] of myself]
; i9 D- y. m, [& g[
+ h; ~4 e" J$ I% G8 E/ dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ W; r1 @$ U+ A9 K# rset i
2 f' q5 J& A9 R. P& ?# b& m( i + 1)

7 |/ A5 w0 P- `3 w' y0 S- x* l* z& m]
7 f% V9 V+ e% ?  _* P) J, n& Xlet j 3
1 }( |! s7 O7 j% E& r, t, ulet sum-money 0
6 l' z/ U: i; uwhile[j < [trade-record-one-len] of myself]
# d- l" e6 C% Q+ [9 }% I[
; {, s  Y" {! S- r( ]. ]1 ]+ @- zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)' l: _: f4 n# ?0 {( o
set j( K! q0 R7 `! h* D+ y; {8 c
( j + 1)

0 G2 G5 B9 S1 N/ Q& p1 P2 |6 `( Z]
+ Z$ J' J, @& O  c4 G# mlet k 3* d* m3 a+ X* G- [- E1 E
let power 0
- Z- A% k: n, E, Tlet local 0
8 K- G& b) w# {" l' k  g' q/ Pwhile [k <[trade-record-one-len] of myself]; i9 O2 \. ^( T+ r6 e2 Z2 C! W
[
" f& @- L4 i0 l7 Y( v% ?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 q; l) S1 a% r
set k (k + 1); a8 r+ y1 ~  [' w7 k
]  S# H. R  }9 w
set [local-reputation] of myself (local)$ [- j$ y! N2 U  ~
end
: N1 E1 ~4 Q- B  ^+ ^6 j1 c9 k/ ]3 Q8 T) U
to update-neighbor-total' h; K% ?; {4 y$ Q  P$ A# y3 a
/ k1 W  L6 e0 v! K' X
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. N& O! ^4 y8 N2 _1 J  x% q. ?& r( q7 ]7 U4 _$ n% e, H) ?

. e, Y+ \4 X9 Q- P/ Z' eend6 ?+ ~/ E4 N( l% I& V$ }
4 b0 k! j( l4 B* Z  y5 @: j! ^, g
to update-credibility-ijl
# J! B/ G7 i2 ~! ?
, E- ^5 L7 g! r;;
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。# @5 k9 @0 M( h& G" ]( p" G3 A7 s8 L
let l 0' _% K9 m/ n, d0 @2 f/ Q3 z
while[ l < people ], A" D- Z6 B; _$ @2 \- i
;;
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 A* E. m1 \" ^" {  b
[
& U+ M8 Y" {1 T- P; s/ D7 vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 A. {5 |  Z" B6 ^" K8 w  @
if (trade-record-one-j-l-len > 3)! M. N) t- P4 |$ P1 I; t7 T
[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: Q7 U0 K, [( h( q/ \- P* \3 G, B8 f
let i 31 a; k. s8 i' {, [
let sum-time 04 K; _! @0 u( L, Z
while[i < trade-record-one-len]3 b$ N/ t8 [3 l, |: B( s. ^& A8 l
[# P/ t5 M. l# a7 k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" L9 P7 D; I- H+ {9 ~" ?: [
set i
# {( {' _: U5 s/ ]( i + 1)

- o& j6 X2 `( ~* [$ W) L# [' N]% R2 q* n8 L4 ~
let credibility-i-j-l 0
: J3 i% p( L" {, y6 x) y;;i
评价(jjl的评价)
2 U' m$ t5 L) e" ~8 o; mlet j 3. R" d; ~. ~0 p/ D
let k 4& K% E2 ]( {& W. J& r
while[j < trade-record-one-len]
# B0 v- c4 t6 t. D) V[1 x2 ~7 y1 S3 x1 M) k/ L" R
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
  ~4 d# A2 x' A9 p  oset 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)
) L$ I  d: [" n, Dset j
; K: y: O% M* J$ C( j + 1)

& V# Q- b& S  |) w9 j* L+ x]6 E# o: [8 J  O, P& F
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 ))  w) L$ O7 A/ W% d
% @, m8 x, z! b
! N) D6 V6 y* i/ G: b/ q7 G3 N. v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 d0 V0 }  v' n5 m5 m
;;
及时更新il的评价质量的评价
, b5 u1 I8 L! ?% f3 b& i# g2 I7 Qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ P, _$ |, Y9 o; I8 X$ G" Q& a) B
set l (l + 1)
  c! k5 [, T3 ]$ \$ h7 f]
" `* Z% S9 N9 E% Q; v3 ?end% O8 G+ D/ ~4 H6 T$ \. I0 j
! o& l. k; U+ r! N
to update-credibility-list+ T  |+ U% X0 c8 a" \: Y
let i 0
1 ~# p) b4 h1 k) m! O* A" g" Awhile[i < people]1 f1 y* K: o# C& v
[
3 X2 b0 P9 S8 ?let j 0+ ~4 _$ Q# ?5 \3 A% G9 g
let note 0
% j* o! @$ M. |8 C# C1 b- m: wlet k 0
: @. C' ^* ?. N8 c;;
计作出过评价的邻居节点的数目
, |9 B% M0 b7 P- k% ~* Ewhile[j < people]
3 P; o0 G. z# H' e9 T/ ]4 e[
" {$ ~2 x" z9 s3 c' ?8 ^' I- Z! ^( pif (item j( [credibility] of turtle (i + 1)) != -1)9 j; z7 r0 X) K  H6 o* f9 n4 S% Z
;;
判断是否给本turtle的评价质量做出过评价的节点
+ v7 X5 A! M+ Q+ E1 H5 |. y[set note (note + item j ([credibility]of turtle (i + 1)))
2 ~/ e4 x+ a' p; _6 g2 T;;*(exp (-(people - 2)))/(people - 2))]
2 u  }5 s) P& l5 K2 t
set k (k + 1)3 w5 G$ ~2 c3 @) S: x: i
]9 Y$ H, i" w( ~9 n7 y: J, N
set j (j + 1)7 Z/ H0 u! z  G5 _, i; ]
]3 G9 M" v# Q, T0 w
set note (note *(exp (- (1 / k)))/ k)
7 D9 Q- @7 r, M2 a2 a% _( k8 Qset credibility-list (replace-item i credibility-list note)' B% Q5 y1 O6 d0 R9 Q" H! L" U
set i (i + 1)+ ]# j7 B) _- _) |& G
]
6 T. Y2 l! n4 o4 _2 `end+ \3 e  J) m: N% c

) Q! ~, A) x" d& N3 Rto update-global-reputation-list
" h7 h# G+ ]5 z6 B; E/ \let j 0
7 J5 f* |/ N1 ^1 \( cwhile[j < people]
* [" h) a* L3 K7 t[
) G% y. ?1 r+ g. X3 j5 h8 Ylet new 0
5 l) t! C  v' ?! ~( l;;
暂存新的一个全局声誉
. k/ Q3 k. K# }& j& Rlet i 0
, U7 j- `5 a/ m0 H2 Vlet sum-money 0& A0 i) J9 Z6 g
let credibility-money 0! V- E3 w' ]% f/ O8 t' z7 Z3 G# @! e
while [i < people]- A/ f# O9 \9 A; J
[
# {5 n# _) E& k, ^5 k' f5 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 n. u% z1 V4 @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ K+ T( ^. z3 o7 v1 L0 h* e
set i (i + 1)
7 a3 q; D2 x; k0 Y5 \3 M  B1 g& c]2 T8 ?; v5 [) z3 Z2 q
let k 0
: K& Q/ K7 }) _5 n: Qlet new1 0- B" k, Y% J: b7 l& Q4 O3 D! s2 i9 y1 u
while [k < people]9 ~; a9 \2 i( y, ~, N
[+ F4 ^- r& i* d- n. v. F
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)
5 F2 @3 j2 D4 o! A8 k6 I5 Q7 Lset k (k + 1)1 S( i7 {; T: }( d: V
]
5 |9 |% M+ `' U( F$ zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: I6 T: y4 V, U2 D2 T( Gset global-reputation-list (replace-item j global-reputation-list new)
2 N! Y' I  r) k9 w9 q3 T6 @set j (j + 1)
  I7 P& ?2 P5 N$ M# |/ E& b$ R3 c]- C& J/ q  M2 Y9 E
end
. s' y( _$ t* B/ h) r, b
  T, y! U( ^, T: C' ~8 N2 h, v8 H& K. E& p9 ~5 L7 \# R/ o

8 T$ `* j4 u! e9 B' Q' Zto get-color3 x1 V  l' V$ v; P) `
* u* h6 @& y3 K6 b+ F2 p' c3 j9 l4 A
set color blue

) ]; X! ~$ t+ v" Wend
" J+ r5 s( j6 p
2 i1 z0 p5 |6 g' P+ Z6 T; [5 Dto poll-class
$ X7 V5 c' N$ A. o2 r7 |end
/ E' D5 |0 Z& ?, b) b( P
4 T9 x& m% f5 Y! Zto setup-plot1% A0 [( R) B) y( t. d) V+ A
( a! k5 z3 s4 s  t- Y& B* i
set-current-plot "Trends-of-Local-reputation"

- f- N* B) g) D& i
# |# ]$ s. R$ r4 u2 C( {set-plot-x-range 0 xmax

! c, T9 G6 K8 r' V( |
4 l( j7 U. L0 h8 L  c" j& U& P2 xset-plot-y-range 0.0 ymax

( j7 R: u; J  y% uend  k! m( |  r1 M3 }3 Y! w

  |2 x( }' h" a) pto setup-plot2
& T" C( A1 z' @4 a$ K9 L1 W+ W; G* t
, {3 P3 V0 b5 }9 ?6 o( d7 m3 ]set-current-plot "Trends-of-global-reputation"

# k% A) g; X' o3 U
! [( p3 w4 n2 E# b( rset-plot-x-range 0 xmax

% |% U2 d6 {# Y6 `5 V0 ?0 h7 k
% g& o1 x- q2 d$ vset-plot-y-range 0.0 ymax
. `& S& [8 j, Q  [7 N. n& C8 k" B
end
  N9 Z, S& ?* N) c. E6 J) r5 M* P
# V" i% F; a& M# Oto setup-plot3: R: m  @3 Q4 W$ }9 x9 t* c

( T( a9 E  v" S+ P- Nset-current-plot "Trends-of-credibility"
* S- K% j0 U6 G- o8 _: j

3 l- M4 j$ g" c% K# z- Oset-plot-x-range 0 xmax
& N0 L9 Q0 t% G" y) G: {; B

; W# ^1 {$ K# [! v$ S3 Dset-plot-y-range 0.0 ymax

+ J& q' N4 A8 ^/ P0 ^* send
7 W4 Q+ `$ t. i: k, N+ I( Z
8 l! V5 k4 u3 \/ N# u8 a6 Xto do-plots8 l# `2 s' M7 \3 X
set-current-plot "Trends-of-Local-reputation"
) I, E0 A0 S: N7 Yset-current-plot-pen "Honest service"
$ q" E* A% h: O, G8 o' cend
( {2 t. R# x9 J" K5 [& \3 w, Y7 W% Y& d/ f
[ 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.
9 Z/ C1 x- C0 J4 Z+ z' h' ?2 H6 Z/ `+ O, v. B/ E& q; G
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, 2026-2-8 05:41 , Processed in 0.018521 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