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: 12919|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:1 x$ l* T$ V/ u* }8 L+ W
to do-business
0 x' l+ j% M( v+ L4 `$ k rt random 360
( z. L% Q- r* x9 @" M- @! @ fd 10 M( s2 p0 u1 c; q7 i$ F
ifelse(other turtles-here != nobody)[& V5 o( R# _$ J2 ^2 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.0 O/ E3 {; h1 [" {' v; Q+ l6 O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 V, g6 Y( H9 c# V$ J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# I+ z# O7 S$ J& O   set [trade-record-one-len] of self length [trade-record-one] of self
$ V1 y5 `2 H; e( n4 C   set trade-record-current( list (timer) (random money-upper-limit))1 G: [0 ?( k: X" T0 Y+ e# Y
/ g7 O9 m* G! ^, V
问题的提示如下:: I2 m$ o: V$ V& W; f" T
" o: {1 F/ ~, n1 j
error while turtle 50 running OF in procedure DO-BUSINESS# z! n  ?: t) \3 W% Y6 J
  called by procedure GO0 I  K" F/ J0 G. ~. ^# J3 b
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& N' \) W$ W2 ?* k  Z* ~) j0 y
(halted running of go); |9 Q7 ]  j+ _1 F
7 V5 W0 Y- q1 B3 o& h2 Z
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~7 m" A( K5 q9 C( w1 I& P
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$ Y4 }4 k% t4 Z  L
globals[
$ Y8 e+ S/ p3 M* z9 e: ixmax! n8 \/ B+ l; n$ q* O/ v8 c
ymax! T1 G) r; J; t, n( y
global-reputation-list
- I( q7 ?+ U2 I; G3 m& _" s2 c. E
* t, f) C6 `+ G8 F;;
每一个turtle的全局声誉都存在此LIST
2 O3 K3 Z1 h4 W2 y" Ycredibility-list
% ?8 ?8 r% G. C& s% j/ A;;
每一个turtle的评价可信度3 G% v- }1 T6 N9 w" o
honest-service
" ?5 K: t- A( v6 G$ Gunhonest-service0 X3 ^, H* T( H' n
oscillation
* I6 d( M* j8 q: j3 Grand-dynamic8 i9 y: B0 [, t) d$ L4 ^6 t; _
]
; L7 [4 A2 x, }  X* V6 a) V
5 ^: t) c2 Q) F# o3 Gturtles-own[
% `. O8 v2 ]+ \trade-record-all2 R6 d$ Y; t4 q3 h3 l# z
;;a list of lists,
trade-record-one组成( e4 n: ~- k$ M; A$ h1 D' ?  s
trade-record-one7 j3 j; v: N6 ]  w
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. ]8 d7 d* a# Z9 u2 h; m
# T$ A/ y4 {. h, z7 f# _8 Z
;;[
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]]3 n# E3 C( I$ ?0 Z) L
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]! Y: {. S  w. X: l. h* O
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, P+ h. B& [/ s" {
neighbor-total
) X3 i/ \% A! C3 O;;
记录该turtle的邻居节点的数目4 g! z9 i& I: |+ R% w! J8 e& L
trade-time
; g4 g$ R  `' j# R' k;;
当前发生交易的turtle的交易时间* O! Z1 h7 {: ^7 m! Z0 ~
appraise-give0 u2 n  Y0 Q; S7 r$ l; `9 O! I
;;
当前发生交易时给出的评价
4 F+ O5 j6 O6 A5 z" {( z/ }1 qappraise-receive
; M( v8 N# K; r7 ]& h;;
当前发生交易时收到的评价  o1 i( @( i$ z( ]" Y+ _; J" V. H
appraise-time% q4 N+ Y' a3 {5 U
;;
当前发生交易时的评价时间* p$ N# e3 S! l" y3 k1 I5 R+ [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 Y0 R7 M, J3 y- p2 z* Htrade-times-total
, B. O- O6 b& a: O$ R+ ?;;
与当前turtle的交易总次数! Y0 u! |. V/ u& D3 |- C" h
trade-money-total
: o8 m( I4 X' E) W6 z;;
与当前turtle的交易总金额
1 R8 y5 N( g. |3 d5 A9 c6 ~local-reputation
: f7 e" U: v! ^# X: [: B% n6 `global-reputation
4 B5 Q, P& T0 q& p% W& v5 ^credibility5 g% w7 q' J  K' x* v
;;
评价可信度,每次交易后都需要更新
' e1 w6 Y$ E& p# Ncredibility-all+ ~& g7 X6 W" |( s
;;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 T/ f9 M% x. O! T
% \* ~7 `0 p# U& m/ G! 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0.5
$ {7 k' K1 j7 _  B- Z9 I' Icredibility-one
* M% L2 z7 _+ O* M! c% b8 P- [2 R;;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( }' Q8 v3 @$ q
global-proportion, n+ ~/ G# L4 |* e
customer# {4 Q& p/ U7 \& j& J( H% S7 ?
customer-no
* ^* W7 t7 L& i: ~5 i1 `trust-ok) [  z- f2 ^) ^) s
trade-record-one-len;;trade-record-one的长度
! P  Z# [7 Q$ d& q$ t]: j7 i' [* y0 y

6 T5 p1 r5 D) q! ]! o;;setup procedure
3 `2 R- L8 B1 }8 |9 M9 g1 H5 J7 B: ~# P( `$ U$ }1 {
to setup
' z8 f1 G( C2 q' D: M4 V# r; F! H
+ A2 E& U% W5 l; qca
# r  @& p1 V; i7 o; o
, u) ^: n. j/ }9 ~# X
initialize-settings
. t/ w* M( e* \6 J% X) `
( ~9 ?/ [4 _1 ]0 d  l* Q6 J
crt people [setup-turtles]

/ |0 r5 k: W) A8 z( t2 ^) Q
6 Q; v3 |% Q4 Y+ l) Z" ]% Mreset-timer
+ u( P  S& W* D2 M) [

% ?+ N  M; Y" l0 ^' v; U8 |1 a# |poll-class
2 o1 z* q# [' C- p; `: |( V% m

% Q: ~9 `7 T1 j/ d7 Usetup-plots

' U! m0 Y) i! }  z
2 A* M" r6 a4 q6 Z: O. rdo-plots

: f, [' X+ N9 ]: @- h8 oend7 W2 g8 {) |& s0 D

0 d8 U% ?, S9 }4 F9 O6 o/ jto initialize-settings
8 V2 {$ ^3 I) q5 K/ M, ~
0 H9 B; i6 P) w; u& S( D! sset global-reputation-list []

& p3 s1 h. T! v: ?, K. l
$ E1 u3 q' I, r' Xset credibility-list n-values people [0.5]

' w' }9 Y: e# \! F% y2 @
5 N" z! S; Z" N  @: y' [( Sset honest-service 0
& w! x) g2 V9 T5 x0 I* Z' \
, {5 @! J# B. \% I- f. T3 K
set unhonest-service 0
9 n, ^. q7 Z* ^, a$ t- |

8 o% d, X! Y) r$ Zset oscillation 0

4 `, S3 u1 R' ^. j/ O2 x+ h% q  W3 N9 l
set rand-dynamic 0

8 O$ }1 C8 `/ Yend
: o2 H$ ~9 L; I) d# M) S
* p9 W) k: d5 F+ m  O; Dto setup-turtles + Q  q1 |& [+ L# v; t; q
set shape "person"
* P& b. P+ K6 d0 l# ^* bsetxy random-xcor random-ycor
1 S  @# z3 A0 \0 \  m$ d; zset trade-record-one []
/ M" x, ^3 |; P* ?6 e

1 D# c( c: @, y( Eset trade-record-all n-values people [(list (? + 1) 0 0)] 8 g" T  c7 k8 G

! r3 v+ r5 \& ~" X6 k$ g) {3 _set trade-record-current []/ M9 C' T) P1 @* a/ r; v0 i& M+ F
set credibility-receive []1 S3 x1 Q# H5 s' N
set local-reputation 0.5
8 y$ j+ c, ^  iset neighbor-total 04 F/ `5 M. X' D" {$ m4 c6 F0 H4 D
set trade-times-total 0* N- S  N5 D2 U6 }+ `' N! u* ]+ o
set trade-money-total 0! T* d9 ]& r, z. l& c* P
set customer nobody* i2 j" b! [% I( `
set credibility-all n-values people [creat-credibility]5 r% i. z, w6 F6 j; e
set credibility n-values people [-1]
- t! b6 W; G. E2 d# g1 L5 E$ xget-color
: ?7 r7 ~6 j/ g5 n5 j) {' C' N  f

: c5 c1 ~5 l5 }$ J; W+ Xend
# G+ L/ I2 m0 q" k: _: \$ `
5 H8 w& L6 v9 fto-report creat-credibility
1 Q. H( Z1 w; m/ |1 L: }3 s9 {report n-values people [0.5]
2 h% \3 S! Q, M& q( W2 v6 ^- F8 Yend
4 b3 ?& J. b( W' u6 l) u
7 ]- u# z+ B' H5 Yto setup-plots5 O' r6 [4 w% m  a. M0 X
, S2 q: b/ X% C( A# m9 h+ F8 j
set xmax 30
6 X. W* X- G; h* b4 L: V6 y

" b0 c3 W8 _$ A* q4 Jset ymax 1.0
9 ~2 d- z# R2 ~( o( L- S
, L: _" c! G8 [7 c  \- o3 o
clear-all-plots

* F, u7 J/ v' f! G5 c$ A' S3 v0 o3 X) {+ V* B; i. A
setup-plot1

3 D$ @, N; B; }! c, g  u* ]8 I
( z( S7 @+ R7 j4 Jsetup-plot2
8 C6 L/ P8 a' ?/ e* A" N# A1 g

2 z9 S- j, W$ a7 j8 i* ^: hsetup-plot3
! d; Z, ?3 e: A" `
end& I9 }, O5 ~" C
; Z" \# S3 a% b4 q' I# N& }
;;run time procedures7 e" M. X5 q. U
' R( X$ l. _. z
to go
2 d& I- c% k( K0 ?2 _5 A0 ?& o( s1 F+ ?
ask turtles [do-business]

4 @6 ?# @5 Y4 V6 K0 ]end
# G; o; g0 q3 s; O/ Z2 Y' D( }" n9 V- [  O% c- Q. l: |! O
to do-business 9 l3 n) |' _* K3 `$ c
* k" j/ @. C2 M* l0 X3 H; R

( S& E* @' J; x  L" v9 X6 ]9 U: c! {rt random 360

" o- n% y  ~# r+ f& h8 M
# }+ b" c( H/ L- ]fd 1
( Q' |( F5 `) ^4 g* B* d2 e

" _4 m! K9 k- i+ _$ ~/ difelse(other turtles-here != nobody)[
/ e" Z5 q2 ^& ~$ M* Z0 X+ D$ F

% T% ^" M+ U3 W7 p& n$ \set customer one-of other turtles-here
9 q0 d5 D& `) x. R1 k

% O* `- I( F0 |; e;; set [customer] of customer myself
5 F- i6 h1 }7 K! ]$ ~
3 p3 [9 _/ T) ?$ I5 v  z9 Y
set [trade-record-one] of self item (([who] of customer) - 1)8 j- g: l  j1 q" B
[trade-record-all]of self. N3 v5 r3 N( g6 O; N
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# z2 e5 F, h; E( C9 |9 d: {7 y' \# O
set [trade-record-one] of customer item (([who] of self) - 1). g  H+ Q% n( S% W! P6 j
[trade-record-all]of customer
, u) ?: J2 C1 }

  r1 P" A; E  ~: l3 k9 _set [trade-record-one-len] of self length [trade-record-one] of self

3 h/ t, L, \9 U
5 ?; ^+ s$ ~; K0 Dset trade-record-current( list (timer) (random money-upper-limit))

' s- \0 x2 W4 S/ @- H1 q' ?
; |% ]& K2 D; Z8 Hask self [do-trust]% k) s% I2 ?- i: i; m
;;
先求ij的信任度
% p" n- ?: O" D1 Y; X% g1 |( |  e: s% ?
) G8 Y, I. K% I" A9 Z6 v; r2 r3 K8 Uif ([trust-ok] of self)
0 d$ x: V' V3 m2 `) V;;
根据ij的信任度来决定是否与j进行交易[
* C8 p" ~9 [& K! kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" o6 t9 \4 m0 N' K9 f9 x0 b! q
1 A1 G% y% u/ w[

- ?' i6 {1 y' \; E2 g7 z+ }
8 Y6 P0 v& n4 u- M: H' _! D% Wdo-trade
$ @  E; {, J( A! y
" a% G$ j6 s4 M; S7 ~, k7 t1 p* x
update-credibility-ijl

0 H, Q2 v* I+ F$ G3 h' l5 A& u$ y) O( ~) F. q; u1 u# T
update-credibility-list3 J9 I! f! T5 @; S8 z( V

8 M1 y' L- n! S$ `, g5 c$ w2 W: z! {' E
! Z, U; C$ e! ^" M+ i6 Zupdate-global-reputation-list
3 U% F) D+ d0 ?7 I. N
$ R7 z2 X) e) `6 a3 P$ Z
poll-class
2 }0 F9 q! A! G
  r/ w8 x6 I+ ^
get-color

! P: x' N. C" x, V5 A4 D; \+ N9 h: s+ i: c2 d
]]+ b, L: _8 A' A/ r- @! K5 S: X4 T
( \* Y# L1 P. \
;;
如果所得的信任度满足条件,则进行交易
+ v  V( x8 \! Z2 Z: `& e4 G% z7 L* r( g
[

( a  d+ O  ~5 H$ `! V; _1 p8 N
3 ?4 e+ N0 G* m& D* y$ wrt random 360
* g" t' S9 \3 H% e9 ?
2 R' j, |3 d, r) K, g' n" [
fd 1
& u& u+ Z: r* F. G( u5 T8 n; Y& I
  p: w6 u4 R2 h: o4 R1 d
]

- t7 N3 M' j! m$ }7 G% ?0 l# q1 `5 Q: ^1 i) ?
end

: b0 h+ _/ |- Z1 a+ D- t: r" f
% E, S. \1 q! m% Xto do-trust
" W7 o+ v5 d  l/ t# P, f( Dset trust-ok False
1 E) M8 _  V( V+ T8 `
, t9 v$ v. i& c& A% Q. Y/ o8 u/ k
8 h" s0 M' `* q* `" N
let max-trade-times 0% z4 R8 `2 h8 Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% i  e, X0 m3 X- L( w( [
let max-trade-money 0+ Y2 D1 Q6 _  G" F- K+ s
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& c) V# m% |, ~* `) S& X  k% Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" e; v: \, S0 [
: ~4 q' h. {8 Y+ j: o$ f

6 i/ E3 E8 R8 f) J( Mget-global-proportion; O( Z* k; }- N5 L
let trust-value$ C0 j+ E3 F& |4 J8 y+ r
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)
# ]# y- S0 w' c  _
if(trust-value > trade-trust-value)0 p' S! C- I" {; ^
[set trust-ok true]0 B' y  ~3 s, _
end
! W& a% e  L  W$ ]5 u" K
/ {% |& V1 b$ i! `) z; C; tto get-global-proportion0 _3 H" M6 O: O7 F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( e& q5 k3 O0 J. g* n; F
[set global-proportion 0]: }* }; ]& h+ }. n/ a9 G  u
[let i 0" s$ g* Y6 a- u% \9 k
let sum-money 0
4 p3 d% ^( ]# [6 `6 @! d; V6 M& e0 Dwhile[ i < people]: V8 N! l% h# K( V. v
[! C+ S5 P0 v3 F/ }0 l9 F6 x
if( length (item i1 r9 ?! H: `2 i' i% z
[trade-record-all] of customer) > 3 )
$ A4 g" C' F( [; P6 x6 d
[3 u" J4 f, e: S9 `, M6 ~1 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), ^, D/ S1 K: e* j9 R7 T
]
5 v, W% \; x5 @0 g: S; ?& K( @  A4 a]- O1 ]* t* `; j: F
let j 0
$ g& q5 [5 M: ]' g0 Clet note 0
) a0 U' |5 I( f  Y2 c) Cwhile[ j < people]
3 i$ S6 L; s- D) D[& T, W+ F& C/ x3 e/ G6 L) M
if( length (item i4 U* Y% x  q' X5 ]5 ]* P
[trade-record-all] of customer) > 3 )

1 K2 K; {' b- I[
2 c# X+ m- s( h$ lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1); ]0 G4 h# _6 A" Q3 K: T
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 b, B1 m( H2 m" X- w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 |1 P& E1 a( B: l5 \; r6 D]
% }) o  B* z; N4 y. [' M, W]  A2 y4 `- C  K% _. U" l
set global-proportion note
/ `2 R$ Y8 a) P]- M* W, K8 A2 C
end. R8 S" t0 t4 E
+ u& D4 h/ U- m0 \
to do-trade& d7 ^8 p9 g! `
;;
这个过程实际上是给双方作出评价的过程
  ?9 K) v8 G; V9 q& sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 R3 L3 }" _6 ]7 K; S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: _! |4 p# j- b( z9 rset trade-record-current lput(timer) trade-record-current$ h& P. \, s, [) C
;;
评价时间
- S! V. Y9 u8 v, uask myself [
5 ~" q1 |7 C( dupdate-local-reputation
/ z. X  I: c3 W) rset trade-record-current lput([local-reputation] of myself) trade-record-current& P+ t$ t; K2 `; a! A3 p
]
9 m: E$ a3 u4 F3 M8 g3 Y& P0 T8 Sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' u# a/ s$ q+ J8 t$ E  r: l* y9 q
;;
将此次交易的记录加入到trade-record-one6 e, n. H1 B: o% O  Q( J( a
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  F' e0 S/ Y; U! Q+ E$ C3 Llet note (item 2 trade-record-current )2 s. U7 V' w: m; k
set trade-record-current1 K' T% ?3 A& B* F# l
(replace-item 2 trade-record-current (item 3 trade-record-current))

+ q, }2 b& `. I1 B8 y4 r" o/ oset trade-record-current
2 e: y# n0 N% l0 q(replace-item 3 trade-record-current note)+ P/ M' o0 j4 W( r/ x) p0 |: f

1 U1 {1 u5 [& p( Z

0 s+ H8 N4 r; A  z, xask customer [
) m( k- I9 Q+ f, }; P+ F- qupdate-local-reputation! C8 e; N/ ~2 f
set trade-record-current* e+ a4 i+ m. M+ Z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

7 v. y7 {. L* ~]
- f1 E. s0 `5 M( n* V
  O9 R( K7 q' @  r

9 I$ G' E6 J- Q6 b# y6 a. gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 y2 l% A; f1 i
: [) z9 d$ G1 {& _+ N" i
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 A. t; _+ Y7 L5 e6 o% e
;;
将此次交易的记录加入到customertrade-record-all0 Y# x& d5 K8 _4 b
end
1 T5 `7 {: y# @/ s0 ^# J7 a, {
. T2 l' ~! u- R! Gto update-local-reputation: \! V' q8 e& H) \3 ^+ E: f
set [trade-record-one-len] of myself length [trade-record-one] of myself
  K  G2 L0 W) U- H- O8 H: u
! w2 a- y* _  R% C/ R  E
( \6 O. i( j' n( b/ i4 s- l# n- k;;if [trade-record-one-len] of myself > 3

; _5 L1 L$ [$ ^) M* g6 B8 Jupdate-neighbor-total
4 L# }) J: G/ J) q+ e4 s) s8 P;;
更新邻居节点的数目,在此进行6 f7 z( C$ B+ J  a
let i 36 ~1 ?. q# @8 a
let sum-time 0
; P0 e! z, {1 ~5 }9 _. y, Kwhile[i < [trade-record-one-len] of myself]* W4 D6 U; m3 ~% @$ }
[0 I$ W  f2 O6 s1 P
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; {0 ~  a$ }* o5 l) Jset i
! s* U6 p' d  Q! {. u( i + 1)
9 ^  P% x5 [& y' M9 P
]
1 d+ u# g7 C8 u7 @6 }$ A4 xlet j 3
- [" _% r: r7 I/ Flet sum-money 0
5 U4 n& @) Q( I( T$ ^while[j < [trade-record-one-len] of myself]
8 c' m' X, {( f- H, T1 v4 [; a: D[
& f" Q) ?5 |5 ~. Y/ Aset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
$ N: Y' D' v7 r/ N% L6 `5 Nset j9 o+ v$ t. }8 t- H5 O( y' j" W7 ^
( j + 1)
2 A) s8 {1 b0 C; ?
]
+ B3 `' V% B# l3 P; q. C7 Alet k 3* w' m2 ?4 ]+ V8 u2 k% S- a
let power 0
; c9 F, ^" l1 ?% Jlet local 0* n9 V2 J4 p) A1 S, N
while [k <[trade-record-one-len] of myself]
  t4 Z8 t, N! t" E+ i[9 b* P! s% D" v- Z4 j
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)
) W: y5 y, p; D& @5 G6 c. u$ m2 {set k (k + 1)
2 C& I1 O& N% p: Z: Z& P8 n9 `]
6 K: z) e8 N2 ]. O2 Hset [local-reputation] of myself (local)/ q! }# c' S4 D0 ?) w
end. v0 {$ h0 S: E0 O, c4 c" y+ }
, U6 ?) e$ \; u- O% L1 n
to update-neighbor-total' C6 C# r; N2 _. n' P9 ]

7 E6 Z: B  T; U6 w" w' N/ \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ t: B: ^3 q' i! R) b& I; S3 B' z
/ }1 e3 }- o/ G, d

0 g! P- C. g4 A4 Y  L3 n$ p$ Tend5 q7 `" S1 g" q$ Z  s1 M1 I
% F7 ^* N0 C% h5 [- M
to update-credibility-ijl
1 `! q4 N- ^4 B' z, `! x" L) V# N! b8 T% q+ g
;;
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 [- U: \5 b1 ^( {  mlet l 0
6 {' r) P+ C5 F( Ywhile[ l < people ]' V1 `! |5 V4 T' ~+ ~6 V# l
;;
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
1 q5 _, c* P8 M$ u  D0 n[
- ~, ?2 I* B/ C3 Flet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 \/ h, U) l9 n& g1 e: N# uif (trade-record-one-j-l-len > 3)1 E8 x; }) E  e- l: O
[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. i* {  U; H2 T9 T
let i 3# V0 F$ K# o1 `9 ~9 A2 v: s* T
let sum-time 0
7 t. L9 J/ k" Y$ A' u7 }; c3 Bwhile[i < trade-record-one-len]
5 q3 l/ ^1 c8 L4 ?( e9 g- R[* M; }7 e) S: R6 d1 D
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 t  ?+ r9 m9 a& @
set i+ W! c$ [  T, [/ m: c: g
( i + 1)

/ S( R9 H5 }8 C* M/ i, `/ u: ]]  @4 C: L8 e* a) i, v6 A! i! E; V
let credibility-i-j-l 0
+ G0 V3 \0 p6 _1 o/ w: c; q5 t) w% g;;i
评价(jjl的评价)
/ c$ ?6 I1 g! R- D( S; Ilet j 3
7 t. n0 t. L) elet k 43 e+ J: k6 l9 e) k* j8 `) ]% M, y
while[j < trade-record-one-len]3 R9 k5 P( G& J/ G, h
[
# A9 Q. _) }8 K6 C+ kwhile [((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, p- E4 |# w% Tset 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)( J0 R& \, w6 l% o
set j
  k: H6 e+ p, @1 D# N( j + 1)

% I5 }5 ]6 s/ @]
# O% M% Q/ V2 Q, e+ tset [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 ))8 _9 T0 E$ Z* r5 H% s- ~

7 j% x" {9 m- s- o: C5 Q

* m7 c3 S* F1 flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, Z! ^# |$ c" a;;
及时更新il的评价质量的评价
$ v, R) O; \1 A; ~set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 S8 i8 j7 {& m: J4 M
set l (l + 1)8 ~7 G' ]  k. r3 V6 h/ c  W
]( d! u3 _  M( K9 x
end+ ]) R( y3 o1 @8 P' I1 m
7 ]6 v4 O5 l5 ~9 \8 y
to update-credibility-list
  f3 C0 d0 Y6 F" Ilet i 0$ C0 x- l7 J& W5 v, j9 U
while[i < people]: H! m0 I- p+ u; a) g
[
, }9 g5 a! h" y- i! ~4 D7 u  ilet j 0" c  I$ p0 N, ?: g7 ~$ A+ Q
let note 0
: E1 ^& E+ E, h/ C- K1 wlet k 0
9 ^* R2 m& M& }0 c6 {2 d" d/ ]# i;;
计作出过评价的邻居节点的数目
4 P, }: E6 I( T8 xwhile[j < people]
* o5 x- o) O" |' v[
# s7 L- c5 e6 B; @' z* }if (item j( [credibility] of turtle (i + 1)) != -1)
3 }: d! E" g3 ~  E6 B;;
判断是否给本turtle的评价质量做出过评价的节点
- M- \7 A* X8 X( @[set note (note + item j ([credibility]of turtle (i + 1))), o3 ?  ~6 R. o3 m
;;*(exp (-(people - 2)))/(people - 2))]
- B+ F. m; g+ a$ g: t
set k (k + 1)+ u* v0 q9 G2 D3 s- ~) m* [. J
]
. s, S- q0 v$ H! [" L2 Yset j (j + 1)
* F) x0 @* C2 f' {. T- c3 Y]
) y; d2 S$ ~# B3 ?set note (note *(exp (- (1 / k)))/ k)# Y3 w3 e& H: w% D
set credibility-list (replace-item i credibility-list note): ~, C/ q) U3 [( V+ ]" k$ p
set i (i + 1)# Z8 o2 W2 Z+ ]) R  M4 ?5 u
]
: l. L- I' P% G3 W$ Kend. L+ y! U9 G  k" A4 }" G$ }# E

6 h7 T" R4 |- J& J5 y/ B5 hto update-global-reputation-list
' {. f& I6 w# X3 v4 G- qlet j 06 t2 C( h5 C( C6 l* w
while[j < people]7 S! ]/ {9 W9 N3 T$ C
[& U  H& }  F" G0 x5 I
let new 0% m: W. w: c, s# Q' A
;;
暂存新的一个全局声誉% G) o' k( l/ R( X) C2 b
let i 0
- ?2 n3 ]/ M. Q8 K; Hlet sum-money 05 M$ k( c6 @4 K' l( _% G) o
let credibility-money 03 M  f: G& D9 I) R
while [i < people]/ k* \1 `" h0 j, ^/ d- g8 s1 z
[% f+ _, |* H- [7 O
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 k& i& v; Q& j$ a9 w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 x3 n! D- s5 x0 X; h
set i (i + 1)
: ?* F: _  S- w, Q( m2 _$ Y+ F* a. Z]5 p* F( E1 m2 f& S/ @) N9 M$ q7 x" q
let k 0
* ]# P, }" v& ylet new1 0
% n& H( b: g# Cwhile [k < people]
  {- l0 {6 R1 d/ W9 F[
0 z7 ]" x/ y4 ~$ p: Qset 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); z7 w7 Q5 s* P
set k (k + 1)" y8 ^8 }6 P. n2 ~, C. ~3 _  W5 G6 t
]* O/ X7 I5 R% B% u+ o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* {! z& O: T6 ?9 j% ?set global-reputation-list (replace-item j global-reputation-list new)
6 i7 X0 d  y2 v6 |, [set j (j + 1)  @, L6 m2 `1 G2 [1 L" x
]
0 ]3 m' V  \! ~9 Rend4 P0 p" O+ p# L& @0 {" z0 j

5 H0 S( R: u8 R$ ~0 [
9 q8 G* d2 g: v4 n8 N; b1 \0 x, \1 r. S) ~! X. ^
to get-color
; z% ], u5 s- |) y9 v# D+ ]9 c  Q4 b; l  l# J
set color blue

5 ~9 E' U5 v& \end
8 |; D0 ~5 T6 V! Q  t3 c$ }9 o) w8 C0 a7 k1 a: X* V0 _
to poll-class& {. _* r  V! P- F
end& B. p% A# \+ f
5 g* s/ P4 C! z: y& W  W
to setup-plot1$ N0 [/ i% H; ^
' z. X7 e0 A; }
set-current-plot "Trends-of-Local-reputation"

" e% U% e* S0 \1 m6 w0 j8 }9 m. w) t; u* q" W/ c+ _8 Z; W% i* r
set-plot-x-range 0 xmax
- r/ h/ Y! \3 A6 M" C+ c2 P
. h1 t! g1 j7 E; t( \' R' h
set-plot-y-range 0.0 ymax

1 z  @+ |; e6 r6 F2 N% W+ eend) f1 A! B! r" d9 E" V2 O$ E

! N' o* T: n: R) y2 R: Gto setup-plot2/ g* p( Q% v7 i- Q1 {, _
0 L6 x, C" B2 B+ H- Y
set-current-plot "Trends-of-global-reputation"

. g2 W, C, n0 Y3 Z
& A% d3 ~' q# B' w6 `set-plot-x-range 0 xmax

# D1 s) H9 V* p* U  E& T- K8 a3 _) S/ P" x! O
set-plot-y-range 0.0 ymax

( _" ?& k8 A' E5 r& z/ Xend/ N# d1 X, }4 c- q2 L6 c3 C
2 ?/ @) u0 c. D. L9 @
to setup-plot3+ a  L# z2 q) N3 u8 G6 X. ?% i6 D
" H& v* K: t4 v4 s5 ~; H
set-current-plot "Trends-of-credibility"
  e9 H' d6 o* g' C& _# F8 c

+ n( k0 L7 _; x+ A+ B* F, H3 t3 bset-plot-x-range 0 xmax

. c) R5 O7 e! q( b- C2 p6 _9 c
set-plot-y-range 0.0 ymax

* ~( F" H$ Z, l* n! U/ Fend8 m- E- F, v) n9 ]& n$ [& b
7 f* |/ Y/ x; L% A* H  {% l
to do-plots( _7 ~; Y  O6 K# T2 ^9 L$ _* Z
set-current-plot "Trends-of-Local-reputation"6 |! ]& {5 h0 ~. @9 Z
set-current-plot-pen "Honest service"* U! ]) I+ }: X5 a' ?" [: @# X
end
) \) Y1 P0 ^$ y: |4 m, ?- O4 T8 I" P1 {( V# v! s
[ 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 d) z: @. s# ~9 P! b! z4 f
8 `# X6 |+ W0 r6 K+ Q. Y- Q7 n0 U, C" t. l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, 2026-3-15 09:00 , Processed in 0.022665 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