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: 16837|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:. r4 v2 _+ x" D% l2 `6 y0 ?, `0 L
to do-business 8 m- f) S; X; }' c) N* S$ K5 r: X
rt random 360' \8 ^3 T' a( v
fd 1, M, g% y! P3 R$ {3 V' c
ifelse(other turtles-here != nobody)[/ J6 G1 v; s# o5 K; j
   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.# {$ H) l' v( q: e, O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    5 e! k, a4 ^( B& j+ r* J- G& \
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 S, B! N, C, P   set [trade-record-one-len] of self length [trade-record-one] of self# v4 L+ D2 m$ t6 f# Y3 F
   set trade-record-current( list (timer) (random money-upper-limit))2 [8 R2 I2 o0 I8 I% K6 V% r

1 n0 f* E9 F' Z  @! v$ b2 x问题的提示如下:
" r! p/ m: E; z$ |6 c
4 y- s" L0 K3 f9 @- j$ uerror while turtle 50 running OF in procedure DO-BUSINESS
" C4 }. o. b) d' y# F4 W  called by procedure GO
4 I" p: s1 |+ [: F( P' S* ^OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 s, [3 O+ Z/ o, c
(halted running of go)% M1 Y, m: }' E8 W
! ~$ t2 ?4 D  Z- e5 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~~8 q& u1 z) `( E
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
" y9 S9 ~0 J  F) lglobals[1 ~6 i$ m5 F/ ]; T
xmax0 s% S) ]1 f2 {! x% O* a9 R) q5 g
ymax  c6 Q+ X5 a* T6 l6 J' @: Z
global-reputation-list
8 B* n* k! h: E; @. c! }& ]; f- B9 s
;;
每一个turtle的全局声誉都存在此LIST
* H1 |2 F/ P5 scredibility-list
: t( h2 y% E$ d" Z0 K# T% z) u1 |9 c;;
每一个turtle的评价可信度
/ U7 I" v$ U* r* G/ }3 ~- Nhonest-service/ y. W' W  _9 u9 G' K2 Y" f
unhonest-service
3 y' h0 N4 ^9 H4 e! S2 O0 Woscillation/ w% Y3 h( E$ `2 n/ J
rand-dynamic1 m5 E9 |6 T/ R2 y9 u
]
3 [: Y5 Z, p, f# X: S4 G
8 g0 Z6 Y" P4 e+ j- r5 tturtles-own[
, O6 R+ {6 T5 c2 ?trade-record-all
6 e- ]9 X' {& N+ u7 H" I" };;a list of lists,
trade-record-one组成- a4 i5 ^+ {: H6 r- G1 ]3 D
trade-record-one+ w. R& s4 P( {7 z. C1 |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( u* Y1 \" r  I3 V! Z* c

6 I0 E! H* c3 i0 ^;;[
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]]
  U/ c9 M6 Q2 x" a0 V8 [( e) ntrade-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]% a) G- A0 e9 c) h$ v- S: D2 U
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
, ^( b# B) c1 d0 g! mneighbor-total
3 E% B1 s1 h: c- d. Q" M;;
记录该turtle的邻居节点的数目: i; d. f/ h5 |% f0 U2 g4 [' w6 m
trade-time# q' s9 z+ e$ g
;;
当前发生交易的turtle的交易时间
  z) }6 W' _* O2 z" z, N, y- Rappraise-give
" v- c; d9 B- \, V. ];;
当前发生交易时给出的评价
  o. e7 x0 {& V$ l0 E5 D* x9 Happraise-receive
1 h. [5 G# }- x! J7 p3 {;;
当前发生交易时收到的评价
9 @2 D, l* ^/ @/ o- jappraise-time; n2 b+ f4 N& y. w. @# y* O
;;
当前发生交易时的评价时间
7 o; d: t5 T, Y. ~" b/ mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: b: N& W/ }1 t( I& etrade-times-total
: I3 o; G( D4 l7 l/ _5 o;;
与当前turtle的交易总次数' r0 T; {7 k; X4 p
trade-money-total
1 r4 P' {' A$ R7 E) q4 E;;
与当前turtle的交易总金额3 S8 g9 I2 ?( a9 H- P& ^0 ?
local-reputation( ?3 x1 q- R7 x2 z2 b- B* m
global-reputation$ s# r8 g7 j  `) {+ m0 T
credibility
; R' S) b7 Q+ y' ?7 L: a( i;;
评价可信度,每次交易后都需要更新
( I3 G6 p% u6 k$ zcredibility-all
. r' G+ r" u- r: 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+ E) {% w% c1 Y6 S+ v7 w5 J
8 E$ C5 x# b5 w2 j
;;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0.59 ?' A  H' t+ C; C; n
credibility-one7 o$ i8 @$ _$ _. v( b1 N* b
;;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
# [5 M  w+ u' z, ~3 t& `9 ~' Dglobal-proportion' ]% `) C' T- w/ V( K% Y3 }
customer5 Y( T* L! ?8 D  y5 ^9 h
customer-no, W2 x1 U$ f4 l
trust-ok) A2 h  \6 |& [) H0 r
trade-record-one-len;;trade-record-one的长度
  L$ T% }6 f. y$ N- K]
* e4 R+ R* [9 p0 J/ ?4 f3 m# A" B* o3 `. y
;;setup procedure5 u8 l6 V) m$ p% T" a6 E' B% J

! L! J# X: s3 j% N* i) X4 hto setup
+ W* I- T# I9 s7 B7 p$ b% ^0 k. [0 P  F! C' W
ca
. e% r0 J1 w1 t7 Q, o

$ B* `& Z% F4 M5 c2 ~8 `& {9 ainitialize-settings

0 k4 X4 t- O3 O* o9 `5 w2 Z1 h) w4 F( T; O0 E! U7 ~7 J
crt people [setup-turtles]

( G2 g) x, t. d5 ]/ l1 E8 X2 P9 s* ^! b
reset-timer
7 R) f9 i" `+ i  H: L* L2 D) a/ q

$ F9 r- x3 R6 c$ f' J. r8 H2 ?3 wpoll-class
$ Z9 Q0 w2 Y# e) a5 j2 |7 u# O

1 {# g) @$ U" D6 U+ k* rsetup-plots

8 \7 s; o1 l: d5 q1 ]" v8 q) w) _3 u0 P" L
do-plots

. p9 H2 H4 H9 Y! d# P* ^end
( q/ V1 K- W0 q
% b) p' m6 X" R  b' P7 [to initialize-settings
, l# L: p4 B$ m+ ]9 |! K) D2 c8 H8 W) p) [
set global-reputation-list []
5 l) r% P! \( j+ d8 m% J
3 A" N- z2 s5 Y1 f* Y
set credibility-list n-values people [0.5]

% l$ z: G, f- M$ M) @- n. ?
+ M; d! x2 W/ dset honest-service 0

" s' l7 n3 v/ S7 J
) N9 C  r5 m1 A6 h0 U) x6 T1 v6 q: Lset unhonest-service 0
. J1 ~1 ^7 U3 ]/ m3 P$ {
1 N# Z) W3 p5 m. L* ?/ V" Z8 e8 Z
set oscillation 0
3 d; L" s& ^+ g' P# K) f8 J6 v1 B) ?
; X) x( P4 B. W- n. h- M( d
set rand-dynamic 0

1 L; D; U9 ~+ d3 o1 {! q: B5 Fend. D! h' W* H( V& i
7 W5 l5 c# Z7 `* n& v" D* R
to setup-turtles 7 c% a% y5 H5 h! Z% p/ [  H
set shape "person"5 m7 m0 ?7 z8 u9 y2 g" M  j
setxy random-xcor random-ycor* X. F$ o" k$ W
set trade-record-one []
/ W. E1 v, {: L! m2 p, p6 ^
5 W7 w- h2 h% [4 e+ J
set trade-record-all n-values people [(list (? + 1) 0 0)]
& H4 g/ }3 Q! d- X- Y9 F- L
- w2 v0 A# \( l8 n
set trade-record-current []
' T2 r! ~: Z* B& G) L! a( qset credibility-receive []" Q; l3 X( w2 |
set local-reputation 0.5
, a6 V# V  F( ~" V& iset neighbor-total 0
8 @" {- y& i* N9 ^set trade-times-total 0, |3 u6 }& _, U1 |
set trade-money-total 0
# ?7 a' b9 z2 q! Hset customer nobody
' M7 i: U0 J7 c- Z2 l1 z" wset credibility-all n-values people [creat-credibility]
6 B9 z7 o' ^6 W! u) J# Mset credibility n-values people [-1]- h% i. {& e' N: a4 j& z2 h8 P# |
get-color
% G% ~# c. e; Z2 v) [9 u

! }) a- N( S8 t3 send
, ?. q  w. ]8 b8 F6 s7 [( B2 j- ?1 j+ r* G7 A1 _# i; `
to-report creat-credibility
* Z% c% P5 m/ F: C7 I: r  areport n-values people [0.5]3 Q; ~  f5 i) O$ t3 Y# q
end
3 L9 C8 Y6 ^* f$ D" t) u& H4 ^0 e( D2 n2 R, r+ s- f9 u2 ]2 |, I+ @$ c9 E
to setup-plots! q8 p4 b; H7 N; B, @8 A& N5 z
5 g3 ~: ^* i) A
set xmax 30
' ]* c1 e7 }3 S4 I) R% Z; ~0 c2 Q9 E

' {. ]5 r7 {' D! @7 Pset ymax 1.0
- t7 r! `. V/ F8 l3 w  ]9 H0 V
& }' z1 q* ^( K7 ]  f3 j; L+ v
clear-all-plots
9 Y' F* G7 F, O  C

' N8 |# m% A! k  r; P) `2 ?9 f( I( Bsetup-plot1

( q* X7 f* n. L# ~: F: I; K$ J. ?* W$ I0 z8 K# r
setup-plot2
0 ^" S( `9 T7 I% q, v2 H2 P4 B
& g& s/ q* ]3 b5 i
setup-plot3

4 v! L+ ^5 ]& m! A8 y' xend- F1 r$ K; j# u
0 X& F9 f6 j" ~2 |9 H% a" U: x& p- D9 a
;;run time procedures9 P% A6 k$ [5 _5 {6 p0 e' p
+ n) l8 l$ f( ~& Z) p
to go5 W  |' s# U' d
8 R, a( U. j) Z2 ^- d8 L
ask turtles [do-business]

  J( o1 _7 }( z, g* l& lend
- y; \7 t! c% D/ L; F5 m. P& X, j% s; {. T8 K: |. v. e
to do-business
, S7 w/ X( d- \4 E2 _6 Z, |3 a
/ P6 H. o7 N3 }' e
$ o2 v0 R1 U; g+ L+ `% m. V; c3 n
rt random 360
3 U$ a) d  b' t7 N* e
# S, M, u6 L# n0 f* }# k: u
fd 1
9 V$ t: `9 n, D; d

3 j- a, C  ~% X6 bifelse(other turtles-here != nobody)[

! l+ w8 S- W! D8 J- f& ?
5 i3 U  o; ^7 W, sset customer one-of other turtles-here
8 {1 k3 w9 ?  i7 \) Z+ V8 x
( {8 b% P$ X; a: X! g/ P7 b0 d. d
;; set [customer] of customer myself

% c- n# G; o- K! Y7 q( T4 a$ C0 X. r2 R% W5 N' a
set [trade-record-one] of self item (([who] of customer) - 1)
# T* Q+ T3 S$ `/ N* M: F7 O- Z[trade-record-all]of self$ y& ?8 c; S; ?9 g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. l: ?" y9 H9 ^1 b$ s( z4 q( u3 Y: [2 j% z+ r9 G! T& W
set [trade-record-one] of customer item (([who] of self) - 1)8 d" C8 k% H  |# b4 W4 [
[trade-record-all]of customer
/ R, L. l& T) j0 _. z* K' {2 |* i2 g: ]
2 \2 s- X9 X" [: v: r
set [trade-record-one-len] of self length [trade-record-one] of self

  C& k. h( G0 s  C7 D0 W& Q* P! |5 \# y( H2 y* K
set trade-record-current( list (timer) (random money-upper-limit))
# p: v+ w% E. q' h* W9 q! m

3 @. k$ ?- l2 N, ]( K/ Sask self [do-trust]+ H( D  c% t. s' H
;;
先求ij的信任度* k9 P/ h9 b" c8 u
  m- x9 i8 v: U
if ([trust-ok] of self)4 g. s2 r) N! p+ ^7 c# _4 |6 ~
;;
根据ij的信任度来决定是否与j进行交易[
0 p5 A5 t. Z4 x0 Y! ?* Z4 M! ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- l9 z2 x$ y, y" F+ W& L7 @# ?4 \, `
[

* R: X1 H- R8 K" b: `( ?% Z- J1 k6 Z/ q4 ?$ c* T3 p% _* g  o
do-trade

$ m1 w/ k2 e& [. k. V
. J. d  G* k6 k: m$ v2 ~update-credibility-ijl

% u4 X0 F: ~# b5 h
( k# Y3 |4 ?9 M9 D. xupdate-credibility-list' p0 K; v* c& ~8 B, h

9 r* `( f) S; F- E1 S  |5 T- G3 b/ @% B' p
update-global-reputation-list

& J' }5 t9 I' e) S0 I% i( C. o4 R% f  ^* _/ J* j; b+ j
poll-class
7 B% ~" d3 s" I
+ T; r0 ^  V4 A* k( p6 V9 b
get-color

5 K) ~6 `0 E' J1 ]; W+ c& B
3 U+ g5 t" n( S]]! W2 a8 T8 [; e9 q

/ Z$ M1 C+ \5 j; b;;
如果所得的信任度满足条件,则进行交易5 Y$ w$ j: `8 p( m2 f
- [+ |: H7 K1 t
[
( h' ~! s0 T" ~9 B  X

$ g6 C$ b$ ~7 P* z0 B" ?1 wrt random 360

3 N# i9 v5 m+ R2 ~$ G& D! J9 ^/ e6 E8 p" w) e! [5 I0 R
fd 1

; ~( n9 n  f; {
2 g7 W; i9 m) n) ^. g]

9 g1 |/ M5 ~! `3 u6 J* C, X. R) u, U  L8 ~0 O( D) J
end

# X1 _( w/ N. R+ [/ ?* ?0 {+ Y" |# [8 }4 x
to do-trust
* O4 S2 F. p* Zset trust-ok False
4 d0 {- I( y2 f  Q  j+ h  D. g  i' x/ W/ z; J+ b

* g( s. H" r8 Ylet max-trade-times 07 J! Q% x$ t# g9 t) N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& \4 o0 f0 k1 V, f6 t" x( tlet max-trade-money 05 R5 H" _. ^) V5 k" ]& X
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& w2 k  Y; p6 f
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))% g$ V, d7 J  R* I

$ ^6 ~8 w2 A) G9 f/ |
) U  F' L- y7 D
get-global-proportion
$ _, a" x5 B- \! G* e  s; L: g# o* H' Ulet trust-value, I* d3 {" z6 \9 q0 B; D8 r+ e7 I  b
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)
( U+ K7 P& o8 b& P$ f: E
if(trust-value > trade-trust-value)( U. v8 p1 `4 G2 d
[set trust-ok true]
5 m2 ]4 w3 ~2 z6 oend
! {/ N: e* o: y$ t; v+ j: F* B3 m! F6 j0 t: f' G
to get-global-proportion
, S6 X; Q6 B1 L) vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 ]6 }9 z. ~; F9 A1 E
[set global-proportion 0]* b3 d5 |$ w% G6 V; M. G+ T( |: l
[let i 0
) a/ m9 K" B% g; W% `let sum-money 03 y* Y# ~2 X/ c  i9 k  l# G8 N. f1 h
while[ i < people]
  A% b% n, U1 h; s, t& B3 ~0 ^[+ H6 o$ T1 @& h6 {" v4 r) ^9 D( a$ i
if( length (item i0 o5 `" l* H* q2 W7 \9 B  i' T
[trade-record-all] of customer) > 3 )

- d7 }  i  F& e; T% q5 j[
/ p  _& }% I2 d/ Z* sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 r, n6 X! e. {& n8 M/ _. l9 ^6 t; O]  u3 B! U8 Z0 u: a" q- S
]1 z2 y; M! v. a0 W, a' L
let j 0; E& w( Q8 X0 ]+ a% {
let note 0
: N6 M8 R! Q  q3 Qwhile[ j < people]$ f" W: @. L* I' i8 m
[2 M( }: [$ x6 b3 w1 u" M
if( length (item i
0 c8 A1 z# u7 ?' g6 Z[trade-record-all] of customer) > 3 )
3 |* H* ]8 U2 O8 d
[
7 _0 o, \2 A8 ^7 m9 _$ Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 t1 M. e0 X' p5 k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; g6 Y) J9 o$ I! q! Q5 Y. |2 g
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. u; G' f$ ~8 G4 T: `
]# @" G( T4 V9 N( @4 K
]4 S% ~% o# {' [7 |5 e6 v3 h
set global-proportion note; v8 R6 \) F. j: P) ]! X4 r
]) ?! q" V% H! M8 ^9 A$ _
end
! S( k. {1 q' s; n
7 |* q& f+ D2 G4 R5 ~+ Bto do-trade
& T, h' x1 S4 t% U% P;;
这个过程实际上是给双方作出评价的过程3 ^( |3 U- l1 k% W' s' X5 g3 ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. o4 s- I8 E( a* W5 ]3 l: Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 i& P* x0 r- |. |6 n8 B7 E1 k
set trade-record-current lput(timer) trade-record-current% f: }+ F1 ^: e" F, \5 n, [
;;
评价时间5 x+ p- I4 j: e( A- t
ask myself [
/ p! t. E2 S7 k9 f! j* K& ~update-local-reputation8 B$ c9 K; O, U, K6 H
set trade-record-current lput([local-reputation] of myself) trade-record-current) f# }/ q7 C9 G% I4 H
]
! D, ?8 G6 a) W3 j; fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 H0 N8 G9 J1 ]& j
;;
将此次交易的记录加入到trade-record-one
& a% S( h& y! V: _set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! ]- n* Q1 l4 B1 k2 tlet note (item 2 trade-record-current )4 U) w5 b0 |: v  ~* [
set trade-record-current
! s' V3 d1 f; p; E7 X2 h) ~( h# i(replace-item 2 trade-record-current (item 3 trade-record-current))

9 ]9 m* e+ z* r/ s6 A- I$ {set trade-record-current0 H# b7 u+ U2 V$ N( I. }5 ^6 V
(replace-item 3 trade-record-current note)
2 u6 R' c- v. f4 t  E* g. E* M$ v8 l, j3 ^( W( x+ v& \
' `' b. m5 b6 b4 K- }
ask customer [
% z% ~: y# l- y1 R2 uupdate-local-reputation9 _" d: v! q& ~; F
set trade-record-current6 p, Y8 `$ ~2 a+ H& x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- t9 o. Q* J, Z+ `* f
]6 G' |2 _& Z. V: |6 ?

. \9 U- h& i. K% F6 H
$ n) W4 k* I: |; H" R! c, g, q
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 m) F+ q4 ?0 `& [

" e( i% t3 T8 N% lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 D+ `1 _7 X: {9 s. ~9 y;;
将此次交易的记录加入到customertrade-record-all" I; p9 U/ D* {  {) Q) U. ~; F
end
$ k; \$ p; t5 ~
" n% j, x+ l& F7 G+ m& Cto update-local-reputation
' `, h  N5 n3 I, ~set [trade-record-one-len] of myself length [trade-record-one] of myself5 X& B  ?8 K! `* u4 I5 X
* ^  g3 B9 {4 J& e
3 t$ X: P' z; I% u. H
;;if [trade-record-one-len] of myself > 3

/ J# v; @. Z7 I; B' z/ {update-neighbor-total- b! U' M! U- F5 [' [- ~4 A
;;
更新邻居节点的数目,在此进行$ c7 v! ]% w8 }) P  n
let i 3
$ \% E7 t# |: g) B5 K# C) |let sum-time 0
. p4 l; I& Z9 l3 Ewhile[i < [trade-record-one-len] of myself]
8 ]/ p! o# K5 ]! Y' ?' A+ f[
3 v9 M9 x8 Z! ?* P, F" z$ x* Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ l+ l3 m7 {  Jset i
5 g0 U; q- H6 l* @  F0 T' U. }( i + 1)

# F0 z$ R% g1 _. O% u0 ^! ~]6 ]  ?% H; U- H* _4 k
let j 3" v5 N- t5 |) y1 T1 `+ B
let sum-money 0
. u5 e1 G4 S8 C0 T8 a, K& s5 w# fwhile[j < [trade-record-one-len] of myself]
- B+ ?7 x: c) {/ s[
6 I1 v' s" l% x5 B4 d4 Pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
( U" N" a  K- x( p2 Z. F7 c5 C$ I# \set j: N/ E3 G6 r0 J+ `* ~8 L% V; O
( j + 1)

! |9 [' r$ @1 F, H% x' l, V+ g]5 `( H0 a( H; H8 N. X! w1 t" ~
let k 3
$ l: e9 U# m+ O  q6 ~let power 0
& R2 T$ ]: p) l: jlet local 0
5 M! R% ~. U- Y; Owhile [k <[trade-record-one-len] of myself]
2 v4 z9 |6 t1 J' c+ y2 f2 V[" m0 V+ n7 Q' F1 f, c
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)
6 u' ?2 w4 m4 @2 p& K( P+ Y) kset k (k + 1)
! l8 X) a! ~0 w, o]
' J* B5 W1 ?6 N7 ~" sset [local-reputation] of myself (local)2 C8 G8 N& \- k  J/ u
end! r) [( _: O5 |' R( J

' v  B5 q, V: A" M+ i' ^to update-neighbor-total5 I4 K! p0 f9 A$ S+ a; z

- N0 H. k9 e# ]/ t; G1 M, P2 rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! B% e% O# [) L8 @, h1 e
, z: k, Y# A/ O& w' I

3 [  h6 ]( {* Z& \6 h; z7 y. {; Yend
5 T0 {7 M- a$ O8 C  T7 w7 z" |3 w8 L& l  u, R4 h
to update-credibility-ijl ' y( W! p8 r5 ?. s" K
. W2 X) s, v5 `3 {
;;
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。
2 A- j# A0 p" D5 ]1 Clet l 0; x& Q4 E, l3 ^5 M
while[ l < people ]2 D  I  M$ n, l! g
;;
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
: [) x+ ?3 p8 j; X[; {8 z8 N- O% {7 m7 A8 V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ o5 M1 M& I7 u% [" tif (trade-record-one-j-l-len > 3)% O; Q9 `! b  L3 g" P
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one+ W, r' c, g* i/ V
let i 38 l7 H8 |1 L! a9 U9 y
let sum-time 0
; D7 X' f( t* @while[i < trade-record-one-len]
5 M5 Q' D/ V9 c& v! @9 }8 u[4 T& w5 f* b; h: n1 H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): N7 L  Q3 ]1 v7 ~
set i. Y+ Y" a  C: r0 E- k) Q. }
( i + 1)
* k5 L1 ?/ q. F
]9 k% Y) d; W4 w& k9 p
let credibility-i-j-l 0; u' b5 o8 J7 I+ i1 ]
;;i
评价(jjl的评价)% i9 y8 Z( Y4 ^  T
let j 3
) S: ]1 \% S& V! e. `' {' \let k 4
6 p# Y- A3 x' p, cwhile[j < trade-record-one-len]
) Y4 p# G+ @& V[  H8 h* m  I6 }. c9 T+ H( j+ o
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) f$ x! j' w8 Q! X9 K6 B6 m$ i
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): f) t3 _3 B: F3 o. t
set j* _+ F+ w7 I5 K/ N  V4 x
( j + 1)
. W( \; L: F" ?7 u4 I/ ^
]
: B) m% w9 s- u2 p+ 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 ))
4 ]$ o1 R7 ?% h( u
# F, j9 F2 L5 d- ]

5 j1 R; z, O; e' G! j# l1 X* glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 \  V* C0 q3 \  a) X;;
及时更新il的评价质量的评价
& w  Q: w1 f5 X( P. K6 s0 Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: ~( K- r) b$ p7 Oset l (l + 1)2 L# d0 T% f- F
]
  D4 b4 J& y& w4 M7 Vend1 e. X* S  ]' V5 T  `

& V' f# s* }3 H4 u# i+ B/ ]9 Cto update-credibility-list9 A9 R) B2 v5 @2 k8 I# c% d' X# w
let i 0& @: G: Z$ F& K( q8 h+ Y
while[i < people]
0 {" I, }- `& I2 T# \- C[  S% a# L  y8 _3 \' T+ N
let j 04 T& [* P! E: o6 y( ?! b4 l
let note 0
. S5 W- e" A9 J3 |let k 0' g  r) g4 A5 C) v( F
;;
计作出过评价的邻居节点的数目
4 I! I' o! V0 \+ Y; O, ^& l1 Uwhile[j < people]3 ?5 {. s. M0 ]$ Y
[
1 v) o* |5 H9 ]+ wif (item j( [credibility] of turtle (i + 1)) != -1)
* Y" M. }) T- w) Q0 N$ `3 s6 N6 S;;
判断是否给本turtle的评价质量做出过评价的节点
! `5 d3 n' B1 A% ?! r; l[set note (note + item j ([credibility]of turtle (i + 1)))
7 o1 R6 `+ z' C;;*(exp (-(people - 2)))/(people - 2))]
7 Y. ?7 n" f: k; i6 v( E8 H
set k (k + 1)
) p( `9 b* @# g* @+ c* f1 M6 F]
5 f7 L6 T9 K# m) n$ D# R! P# pset j (j + 1)9 ]  s! z+ X4 I/ b9 n" B/ m
]1 A) q& C5 Q0 J, ^$ Q
set note (note *(exp (- (1 / k)))/ k)
6 Z1 j- m7 S' f1 {3 jset credibility-list (replace-item i credibility-list note)( v$ Y+ i& i1 f% `
set i (i + 1)- B8 u  B# f4 g, z
]
  t% _4 C( X& W# r' y# U  K9 C5 F4 ]end% j% @8 u* R! X( ?

/ j- W/ C8 H" c4 {+ V/ o% h2 Dto update-global-reputation-list/ F% z  f, N) V" _0 U4 Q/ f
let j 0
/ S+ o9 F5 M/ M0 I! \1 s. rwhile[j < people]
% d1 S' F- w7 C9 v1 l; r$ r[& d6 B  _- F* }+ d
let new 0
. `5 {. k9 e) z1 G# {;;
暂存新的一个全局声誉' n' }" z+ @1 |
let i 0" Q' E/ C# |. W- `$ l7 k! ~# c
let sum-money 0) d) c2 p9 J3 ]1 _
let credibility-money 0
  ^0 y) v" o% z; {# C( u6 `while [i < people]
" I6 g7 L8 N/ y  K[! m3 z) j' _2 z' x! w" Q, }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), |$ {7 y6 Z% h+ K. U8 w/ w/ R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 g2 @% S3 e# u. a2 u$ _0 Bset i (i + 1)
% L* A6 ^7 D0 h; I]& z8 ~$ q) f5 a1 X4 ?2 @* u. i
let k 06 o& _: V" r4 T
let new1 0: A! G0 q! R! _- R( O7 k
while [k < people]
' \. V( H) ]7 P7 h7 E[% p9 K  ?& n5 t7 ?
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); u# y; c$ n/ t) p9 h  H
set k (k + 1)" r+ v0 ~# u' ^. G: x7 R
]
; m3 p0 E! z- E9 f& d5 eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! m; K1 a7 F1 o# r  Y
set global-reputation-list (replace-item j global-reputation-list new)
0 ^# P' i$ r+ P0 R; c# |  bset j (j + 1)
  V2 S: |: h: P# ?, K' I9 c1 S]
, H4 @+ I; V) f. M( S. m: v/ _: hend/ B& x% I. C9 z7 J. Y; m

( y% w, |7 e- C4 }# M0 x
" z2 {6 Y6 m5 F; J- i+ U
# e  e# c; {9 A% {9 }+ ]8 t0 wto get-color( p. l  O7 m  g, q7 y" N5 E# |

: A4 u  x" D7 e6 y- ~! vset color blue
8 l% F! y* k# P1 ?! A2 F
end1 e  i7 E8 J3 g) D

% w( ^! r- b0 l! ?/ w5 fto poll-class1 r+ T4 F8 |$ E* p, r; W
end. q+ d: F* g) \& r% D( W; b

1 p+ Z% E1 I. \% v2 v$ f8 cto setup-plot1
" n4 D+ ~* j- ?$ D4 M6 L* m5 e9 O% j  x  L' W$ H) s, ^
set-current-plot "Trends-of-Local-reputation"
9 B+ W! m* A  W/ e8 `
  {4 ]* _* ]1 n* O- j! b
set-plot-x-range 0 xmax

) I- e8 j' @4 ?: @" h  x9 W
+ d/ f! f0 L5 \0 lset-plot-y-range 0.0 ymax
& V  }6 N7 k) ^: v! c
end' h8 ]& q2 I0 Z- @) e( m* G" K1 |" T
+ |" m& o3 r! q4 P; V: s7 `
to setup-plot2
3 [* z5 g* i  k& G* N
" l" E, W+ C3 [! ]set-current-plot "Trends-of-global-reputation"
" [) j2 i3 P1 p0 v7 A
! W8 g- |/ k3 V) u
set-plot-x-range 0 xmax
7 _" h! `: {$ K
; ~! m6 n  [( T  Y: ]/ O+ U
set-plot-y-range 0.0 ymax

& M* K+ N% ?1 J5 _- Q' uend1 e, m( l( [! i0 ?% j! ^, ]
4 k' [  l" I3 Y, M& [) [9 o
to setup-plot3
& S2 D6 V, J  d6 W# i4 U
, p) x, m+ u: u; N+ c; Aset-current-plot "Trends-of-credibility"
% U# g, l3 n4 s5 A9 U/ J) |
# B# X5 P, d$ l4 l- l
set-plot-x-range 0 xmax

% ~8 P: _: {, c# q1 ^9 C$ l3 a2 k( @" ]
set-plot-y-range 0.0 ymax

2 J8 k$ M; C9 t- v  a* gend
$ V. k: u4 b8 R4 f, I+ U* |+ B( r% z5 W+ _/ P  I8 Y
to do-plots  [7 d: f0 e, G5 E8 z! d
set-current-plot "Trends-of-Local-reputation", m7 _' s/ Z% s+ q1 `  x0 j
set-current-plot-pen "Honest service"
5 S5 z. C( l9 G- `+ Tend
4 c9 s+ O2 o5 R$ ?( R% v# V, s
& j" Y8 t. e8 [6 x/ y[ 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.4 x$ D! _$ s4 ~$ X  P! G

3 q: v. w: `9 K  A$ G. M这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-7-26 11:18 , Processed in 0.018049 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