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: 14649|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:3 |2 E, ]) D3 I9 P6 j1 ?" R1 h
to do-business
/ Y( S1 f: u% Q3 _0 X; V) \ rt random 360
4 V/ D0 v" r- ^1 \  {" q$ D fd 1
1 }! G% |- u7 z4 ]6 q9 X! k1 L5 v: N7 O ifelse(other turtles-here != nobody)[
" V" }; f  g' ^- C& l9 n   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.8 h0 N; b! u+ |
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 }0 y$ V" f5 B2 L/ O5 T* X: V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( M/ ~% D  \  k; O* }; U! A   set [trade-record-one-len] of self length [trade-record-one] of self8 B' e! L" u: Q/ S1 K
   set trade-record-current( list (timer) (random money-upper-limit))
; C- H8 D% V: D' |# a
7 ^- g4 l: M  D+ T# A0 p+ a问题的提示如下:3 H2 d9 Z+ y+ F# f
- e' A2 r# {9 Y3 S7 k# J* F9 W) z
error while turtle 50 running OF in procedure DO-BUSINESS0 W& T, u5 y! _& ~
  called by procedure GO
' e5 i/ A  i+ |OF expected input to be a turtle agentset or turtle but got NOBODY instead.8 }' R9 u5 V7 D3 f
(halted running of go)
5 O- n) H4 ?; r# ~
2 A% H* h8 u4 q9 k8 e/ 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~~* ?+ [3 T" I% `, k( j" A  Z0 T5 O- M
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
; V6 V- J& e: z( |globals[/ p. @, d* p. m3 `. [' ~* w
xmax
1 Y+ m# N7 Q' G2 w' q+ z  k6 vymax
/ [  S5 M6 w) F' N7 B' nglobal-reputation-list
* }' ^9 T) h. t' i0 }
4 ~- m1 s7 |9 c: R;;
每一个turtle的全局声誉都存在此LIST
' b$ S' g+ `' [4 Ccredibility-list( e# o9 A6 Z& r7 W
;;
每一个turtle的评价可信度9 u% q6 b, @! I! }0 C7 H
honest-service/ x, _. [4 m( w2 _
unhonest-service
# a- X5 }+ D9 `' `3 B( Poscillation
7 s7 e. h, u9 E" ?* drand-dynamic
1 w3 `$ S4 N! [$ E3 `0 [0 p, C]% }5 A( d& S7 I6 g5 h$ Z# `

+ d7 {+ V) N& e6 G/ O# R& xturtles-own[
4 l  o5 K( s# |6 ^trade-record-all  @# O8 ]. t! r$ {7 Y. O$ Z0 p
;;a list of lists,
trade-record-one组成
- n, x/ g: t+ k& B1 T5 Z; gtrade-record-one
- E: C/ r: l# S5 T* g# w! Q) [4 n/ S;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 r! z+ L5 L9 \, x  x% Y" o) r6 P/ u  Y  R, H9 j4 g
;;[
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]]: z& O8 t$ R/ P, P1 w( |8 G3 e
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]% l; X/ W$ d, }8 n/ @
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
1 {( C% Y& Z6 |. @1 fneighbor-total
. |+ |7 g: q1 G2 c9 i;;
记录该turtle的邻居节点的数目, i% H% j% O' j" y) a4 y
trade-time
1 r( [* u8 T8 E; z;;
当前发生交易的turtle的交易时间: `" l0 o7 a0 F& v0 M: j; t- m3 ]. i0 V& T
appraise-give
  k7 C5 y( w& E;;
当前发生交易时给出的评价( O) b; d6 I0 q% b
appraise-receive# [: k4 {- ]/ q# A" e
;;
当前发生交易时收到的评价; S0 \2 V+ ^' x- r* G4 {5 o3 h2 s
appraise-time
5 Z$ y2 w) q8 C" E;;
当前发生交易时的评价时间' S; x" N: T1 ~3 d% L! l( p
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ W" r  y6 c7 n; V* A2 Ntrade-times-total
! Y- j6 n; q2 t. p5 [;;
与当前turtle的交易总次数+ Z7 [+ \  m; Z# c! P3 m( G
trade-money-total8 @6 C4 i( G9 E3 v# E/ B
;;
与当前turtle的交易总金额
/ H% {* x! I! v3 x  @; w3 F* C4 ulocal-reputation6 C( u4 {: N4 X8 m
global-reputation
  W/ c" s6 A) Tcredibility: k. u) Z, q4 B+ s( |
;;
评价可信度,每次交易后都需要更新" D3 L4 d& _$ \/ E' ]
credibility-all- }6 E' x6 _( i! f" 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$ R0 l0 j/ [* S" g5 u5 c

' Q3 \  s. ^$ t" g+ y$ @: R0 z;;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
2 j: x- `* f: bcredibility-one
" }( Q% Y, G  Z& l;;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) I! {. i1 M2 c. Z
global-proportion* K* k6 V# s, L7 h
customer& h! M# T( c2 m6 I" Z$ _* E6 x1 ]5 g
customer-no
3 l( [2 v, y& C: U3 Ntrust-ok( b9 c$ `5 d) |+ e: K7 x: n. t5 U# c
trade-record-one-len;;trade-record-one的长度
# ?  n- W8 T* [, e9 a]3 h5 j/ G$ p1 s  Q
4 z) s( W6 P3 o
;;setup procedure
' H+ d7 B: o. E9 w$ D
! C* |  F3 ?0 @8 j; Fto setup
4 x4 R( a+ J' C
4 ]8 W8 i3 C( G6 F. T) N+ Uca

! F( `/ o7 W* M( c! c0 c& K* K) u3 @6 Z! d$ Z& q2 F$ x1 k
initialize-settings
3 q& {! F" l) D
' t! Q$ T9 z; Y$ h; f
crt people [setup-turtles]
/ c# ]' G$ P7 I9 e
4 K/ T, H" a6 ^+ j
reset-timer

' z3 r! C" |$ i, W- A6 w( Q
8 @7 ?! C+ G  C$ [! F6 Opoll-class
$ z0 l. ]8 l) m' ]

& x* C1 y" J! \$ Xsetup-plots
. C) f6 T7 `5 |4 d
! v. s; f4 s8 k! n( a" l5 g
do-plots
: _  j0 g. B" v2 t/ f7 m, H
end
3 c! |  T; a4 J# X8 H6 l9 j* q: L3 _+ T  y" [8 W3 L, T
to initialize-settings& `; O: ~$ {9 O* {, C1 f
* p: {8 L& T2 _9 {
set global-reputation-list []

! _$ V" p% O; N5 D
$ Q& n: N- r& zset credibility-list n-values people [0.5]
3 k1 A( a5 H0 Y/ G, |

+ e$ ^$ G3 [! B( ]% S2 Hset honest-service 0

% y# W# x) x" D, o( q0 K
% `% U" P) T2 y+ E3 a/ ^. n/ G5 Dset unhonest-service 0
. X5 O$ u( ~) [7 n! r- d0 P
$ A: r0 h+ O2 X8 _) j8 v# J; P
set oscillation 0
- |2 w( |( C$ y7 |
' T# y. `) v) f& b) X
set rand-dynamic 0
$ D0 q" E+ w* Y7 o
end' c6 K. G) o9 m

' V9 l5 y+ x( `4 Vto setup-turtles 1 B! p4 e1 }( A, ~7 J1 o: f9 {; F8 V
set shape "person"
9 J4 f1 ^) j! {0 U+ T/ M/ msetxy random-xcor random-ycor# D: F' w* M1 U! W2 C
set trade-record-one [], u: ]; b. A8 n; o+ O9 U9 D

' g- |2 x9 H- Q" Y" Y- X. j7 {set trade-record-all n-values people [(list (? + 1) 0 0)] 9 B! @+ R8 [% ~
3 N0 N! g: O1 }6 Y  r
set trade-record-current []
% j% P8 Y* n  Q. L- Q# u# sset credibility-receive []+ p2 {1 p7 l6 w) w' E' c
set local-reputation 0.58 c  b' W- R5 G% u
set neighbor-total 0* ^" E3 F/ Y& B
set trade-times-total 0
0 E5 t. Z# E- f* Xset trade-money-total 0; Q/ X6 R# S. J. x
set customer nobody
: M& r: T3 e& D0 S3 Y5 Wset credibility-all n-values people [creat-credibility]
3 H* C) ]  g0 W, ~7 i8 B; hset credibility n-values people [-1]
6 ?+ g" `0 W* R1 ]& j" ]get-color
. g) r9 e+ X3 n1 U# u9 q

* a0 G  f$ J( B- I+ fend. H4 d. q7 Q9 x% H; f  |7 c5 r9 X% n

8 k1 k! ~. i2 J! e8 `2 U( Kto-report creat-credibility
2 I7 w& `# b9 q; c) Y3 o- Freport n-values people [0.5]
. v& X! h5 C& _end+ K  m2 K+ E" ]$ l# P
8 B  K: ~  w% P, q( I2 a% n
to setup-plots
3 M" n' {8 T4 ?8 ^5 X: N' G& v
4 J$ ^  _3 S% M8 O1 Uset xmax 30
) \8 z; z+ o9 V; b+ u

$ e+ s) t& C; A! y4 H; S& \# _/ xset ymax 1.0

! h8 _/ m, |# k: {# H
2 c# Q+ u6 r" I( Iclear-all-plots
. g1 y+ Z1 \6 }) Q- `% a% e

. R' T0 J. I) q6 O: \9 dsetup-plot1
; ]6 P6 {; q; [- J
3 f) |: |4 [7 A; o8 ?" z
setup-plot2
. b' r1 O  D, Y% j  V; |

1 U( x8 e+ G3 ysetup-plot3

4 Q# a$ Z6 }: L' s0 r! qend
$ c- j5 R; V1 S/ S8 U( J$ C& o* E  f5 N, L2 a
;;run time procedures7 m2 D0 ?- ?) O7 ]$ N( A0 Z
6 m: p. F7 U9 G$ S! T* H6 U
to go# W$ N6 L: F0 j/ Z( S; ~; I
5 a( z- A9 A/ @# ^
ask turtles [do-business]
5 c; _$ V( I' J4 W& y0 M5 t
end$ a& k0 w9 R$ o6 k& L$ O6 I
4 }. Q; \* J$ L0 m
to do-business   b+ Y" {) G. I6 J2 n
: E! v; n/ |/ ]. f/ C' `" H9 Z

, t7 H. J' l# V2 Trt random 360

2 `. ?/ G+ p4 H9 i) a: A2 o0 G0 X" I% ^. k. G. P8 a( Q
fd 1

( ^. ]" t1 @4 x3 ^7 X
/ W7 k' Q; u! _. p5 [5 g4 uifelse(other turtles-here != nobody)[

4 S; W* \0 U4 N" t& ]4 z3 @0 L) I! B; q
set customer one-of other turtles-here

0 y# o& Y( |. n4 M; x1 T
1 W. x- [% \3 w;; set [customer] of customer myself
: W  a/ t! Z* @& Q
, M  H/ {, }" t& q/ a. D1 y$ T% `
set [trade-record-one] of self item (([who] of customer) - 1)
3 u3 I* h6 u& T+ Q" e% R[trade-record-all]of self
0 g* R5 C7 ?0 `7 c/ r# u! S2 L! S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; }# A  s# V9 B7 B; k* i( `

, g9 L9 H" O9 X0 i& H! ~5 uset [trade-record-one] of customer item (([who] of self) - 1)
' Q4 {% a) E" @. J! \[trade-record-all]of customer

" p0 v6 V: G9 t/ \( U1 q$ E" S& `
: o: Z; e& N& n9 h! ?$ \; z6 ^set [trade-record-one-len] of self length [trade-record-one] of self
# I, o, D) G0 Z8 {+ f& T
  B. p# j; i8 M( y: H* K0 S9 r
set trade-record-current( list (timer) (random money-upper-limit))

; L9 O) |$ ~6 n( T0 W) Y) P" L; I/ R8 _' E7 \/ }3 r# J  x
ask self [do-trust]: d* a: ~- Q7 f/ N7 ~
;;
先求ij的信任度7 m7 J' }( l. ~& @" n% Y, u

' ~' H1 i, @% v. o3 v1 P: k; ^if ([trust-ok] of self)
, O& W) Y! U/ u& V( H' k;;
根据ij的信任度来决定是否与j进行交易[2 u) Y; G& ]; j6 c7 u$ ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; Q& Y2 n$ H% p' e; j1 t- Q9 F7 e

1 Z* X' Z3 h+ m[

. u0 Q; z; y' v0 ?& P+ C5 T+ m, f( `
do-trade

' N4 v* H' Z+ L
/ `& @' [" P# K4 o7 x5 bupdate-credibility-ijl

+ S* J' \7 h" h
5 u* r$ s- W% j) j" z6 kupdate-credibility-list
% ^$ }. N8 }9 o2 T- |

5 e2 v# j# j, H$ ^5 G0 `: t' @9 P: F; R0 B, v
update-global-reputation-list
1 ?/ b/ g6 x9 x1 r
3 o# K: r; Y# |( V0 n! d3 u
poll-class
# b5 p, m( n1 j4 z: \+ C* u, i% |" a' N
3 W5 r! G2 L& i6 \/ m0 L
get-color

# l, ^' }: q* k: f
: J" h  L3 U3 M/ q4 B]]0 H( @' G: V" g. M2 `
$ m- q7 m8 A& k6 V& ^
;;
如果所得的信任度满足条件,则进行交易
* e: _4 ]2 o' v* d/ t4 [- M: i* B: U# h0 g
[

3 a2 D' K7 k4 N" o1 |3 K7 [) I) Q) t+ P, B6 t
rt random 360

* l. `. Y0 l7 K5 J+ g2 G4 a5 Z+ E' \) r% S! X6 G2 f
fd 1

" k0 |8 k1 h- F6 e' d  L  l6 @# R- H
]

& Z2 j6 g1 c7 N, s. p. P: R1 W7 ]) f1 F
end
7 J+ h/ o5 |: D3 e; g8 O
. A' @- Q8 \0 z
to do-trust
6 E( {6 H5 D# C2 F2 tset trust-ok False- u1 B8 \" U) b# t/ A' a

; ?; S& y$ u, j5 C4 z- q- E. c& T2 S

' X- Z- s- m! zlet max-trade-times 0! [$ c5 I0 u+ I0 \. W5 I
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 |% f% h/ f7 }8 J
let max-trade-money 0( |1 v6 @2 V2 ^# N
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" _6 ]. L- O0 Y
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ s$ z4 l3 Q" C# Q+ h

6 Q9 n$ e0 ^2 T/ e

& B) x) b, O1 l1 X( B4 q/ ^get-global-proportion
5 s; F8 D! X0 B0 ^, ^let trust-value/ a- u6 E+ b! h8 t6 t1 M6 |2 H
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)
1 K' W6 E- F2 N2 N$ U1 @) E
if(trust-value > trade-trust-value)
, H  y8 H. [8 |, a8 I9 j; N" I1 C[set trust-ok true]
2 Z8 l: m+ h. t/ ^5 s" l; wend
- B& e) v& d6 K6 E1 |/ E/ W& G; a/ |. m9 p5 D! y1 l* H
to get-global-proportion+ ~3 T0 |9 c2 k
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ X4 V0 f( c$ y& |: e/ R( v" U[set global-proportion 0]
/ a4 b5 u7 S3 a[let i 02 G9 S3 B: a. w2 Y4 S
let sum-money 09 p0 A4 ?& M* |  C; D
while[ i < people]
# ]2 Z- Z# x* q7 S0 d[# s  z4 I+ F. J
if( length (item i, ?7 U1 e% _2 c% |
[trade-record-all] of customer) > 3 )

+ K9 F; s) P. G- w, t( ?( A[( h9 H7 }1 C+ Q2 C; D1 l' ?
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& G' d: h* y4 G+ o, ?% E3 k: \6 L]
( ]$ \* ^4 X8 S/ |8 []5 T/ j' t* v; g) m/ d( C% X% ~/ R
let j 09 O/ S) n% _+ a- }3 e
let note 0
/ g: X/ |6 @: ]9 l; p# d" Ywhile[ j < people]
+ U6 E9 T: ^* ?: n0 r[" `% u; F, D9 _4 \. v, x3 S
if( length (item i
; J: z7 z9 M( @; N2 l[trade-record-all] of customer) > 3 )
( u7 p8 ^3 {* m! W8 o& Q' w
[
1 @7 n+ R9 A) e7 n" |, H4 \. Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# ?9 o& m0 a+ H2 K
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! q% s  L7 F5 w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 r' @) I. ?3 `5 R5 B0 X% k  b) i! a]  F, h' ]6 D4 g  d% I1 m
]7 [( {% j& s" X9 Q* J5 X: _; R* T
set global-proportion note* o8 k: ]5 |) s8 e; O
]
. d% S& w5 H, G* `9 S. send
( |6 p) V* O* R% M) q  Z7 i
- h5 L8 X1 j; [0 W$ E' j6 tto do-trade
/ c! M1 g3 L* {, ]; V/ b1 W' H;;
这个过程实际上是给双方作出评价的过程
3 A1 M1 V" N& d; s  k, l$ bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& x9 c/ f- o! M& F* cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; R$ d: Z8 `  M3 V* pset trade-record-current lput(timer) trade-record-current
  {; q. n4 F; G) V- _- I;;
评价时间; S- t' h7 i# s4 b
ask myself [2 x7 x1 u! S$ g; c/ \+ E
update-local-reputation
+ `5 @" _# n5 E6 R7 ^& ~5 Uset trade-record-current lput([local-reputation] of myself) trade-record-current
& K9 b& Z8 d! ?]+ i0 Y( K: o$ Y+ H( V: O
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; S" A- ^) b) W
;;
将此次交易的记录加入到trade-record-one; Y+ g7 b4 G7 g; T5 k: X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 a/ l+ n2 Q+ n; o8 n3 \let note (item 2 trade-record-current ). c/ r" x" q0 k' B
set trade-record-current: Y/ i2 i  m0 Q
(replace-item 2 trade-record-current (item 3 trade-record-current))
0 u% i& n* s) M$ l4 o0 @1 f
set trade-record-current
  _+ Q- ?4 P* K9 Z1 S/ n" E) b(replace-item 3 trade-record-current note)
4 e- y3 A" v; n& i" M1 V: [
) B' `7 \4 t& R7 q7 g* E6 V

$ k; ]- p! j4 v" A# M( o3 qask customer [
" W/ W5 \* \9 d# ~2 z( v! }# X. N8 Rupdate-local-reputation
6 L8 u' A+ X* A0 o8 b* j' y7 q' k, Qset trade-record-current
5 ~- Y' M" _# N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- L' V( f; u, r2 z
]  P5 E# {  r0 A* L' i
1 G) g: l0 p: z% J; _8 H% V
7 M, r$ \, [6 }# ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- V  J3 t) Q2 C+ B) \

+ K( r7 B* Z# lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 y* w9 k* `& Z8 |. };;
将此次交易的记录加入到customertrade-record-all
0 F! d- |) h+ |end2 X* u) `6 b3 l0 G) z6 B
, @. D+ V9 e+ v3 k
to update-local-reputation
' S: u0 s4 y: Eset [trade-record-one-len] of myself length [trade-record-one] of myself+ P! A5 E* {: O5 o5 C
7 F1 r( _1 U1 E- ^  V$ ?
- V. D' N' ^. f+ \
;;if [trade-record-one-len] of myself > 3
4 E( _) y. k; W( V
update-neighbor-total
. H9 c: D4 p& m# z# b;;
更新邻居节点的数目,在此进行
4 V: K" `  ~- ~1 P6 Y/ }+ Xlet i 3
, D2 A. t; H  H. |$ H4 Slet sum-time 0
( _6 N) A2 m' k1 R& ^while[i < [trade-record-one-len] of myself]
0 D2 V7 _) R) E$ [% h[
4 m, U7 w- q, c  e% o6 zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ j# W0 Q, t1 I7 |. Q8 q% m
set i
; B7 K# n+ x' O  d( i + 1)

  X$ v# B% I9 F0 ]6 g]0 i5 o( z+ D1 p
let j 3- V4 W: N% I! W) |* m5 w
let sum-money 0
/ w: o$ P5 w4 u& {1 T& [% p8 ewhile[j < [trade-record-one-len] of myself]* u/ E2 \2 L& d6 [: r* _: c6 }) N3 j
[, L0 z5 I0 E6 ^& G: j! x  d& g
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)
0 A( O1 r/ h* w" x$ Q. u7 Eset j' |0 q( j; E6 Y/ B$ m1 _/ k( d$ q% L
( j + 1)

  O' n( g* \# Y" n/ J7 f5 v+ v]
' l2 L, C) y: ]let k 3: O9 X' n( L0 D8 E9 l+ [0 {
let power 0
; I$ F8 r5 T5 O* z2 dlet local 0& ]9 E4 y, K$ ?5 k3 o
while [k <[trade-record-one-len] of myself]
  p* W) r  ~8 L- q3 V[* E6 m% v1 u! j7 V* Y
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 c9 w0 z$ B. e3 [2 V, z
set k (k + 1)! d7 J) R; E* S- H' `! a
]
$ o, a# e' @3 G& d4 W* Uset [local-reputation] of myself (local)
; _& u" \# c# u1 N/ U. Y0 Zend
( o$ J% s# s& g- a) G8 I  w* A( q$ t7 r$ D$ G. L
to update-neighbor-total
# v9 [* z0 S3 l, b% i! s/ ]2 B" a0 D$ J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 j  f# j0 A7 p

8 H" o1 J3 `  z) O! d

0 E7 ?) V6 R0 z, }' j5 X& L8 Xend( H+ f& H" ]) J0 @/ P$ f- K

: w# w+ }1 H. F1 |: d7 Wto update-credibility-ijl # P, j' p7 a; x" Z/ j

- k- }3 W" ~- H3 w7 ]6 R0 Z;;
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。7 d1 P/ y- A" x0 ?  _/ w1 I
let l 0
, ~% f% E7 |- k  Rwhile[ l < people ]7 r9 }, V0 Q  W0 {& R% H
;;
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
4 h6 j9 v$ B9 V: J+ H[
6 }6 S) d  E. K# k$ y  W, ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)( @+ m: W# a5 y& j5 k. |0 ^
if (trade-record-one-j-l-len > 3)
' U6 U0 U; H( o8 i, Q% B[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
8 t9 E0 Q0 u& [5 Glet i 3
/ M4 }) I  f+ B0 t8 qlet sum-time 09 p3 @3 p( E! V: q" o6 s' }
while[i < trade-record-one-len]
. u/ x0 C' p9 |4 E[
. Q$ q$ z1 U& N. g" N4 M/ Sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 a* Z  n+ @0 V6 R( m8 y
set i
$ ^6 T1 E" F, ]0 I; `; ~( i + 1)

+ T3 o2 t( Z) f. w8 c/ J1 U]
, S  Y- C) m0 N0 Y6 n  r. B; Ilet credibility-i-j-l 0) X  V* D8 v7 b' h2 [
;;i
评价(jjl的评价)6 F; m( i, W: r9 I7 F, S' x+ {& P9 |
let j 3: ?/ B8 L" k0 n, }
let k 4' Z2 y: z  l: }4 B
while[j < trade-record-one-len]
2 }6 m' @+ n# Y- _" {0 ]1 K[
. W9 @( s$ `; e; C( a6 Z/ ?8 b" twhile [((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$ a6 v4 z( x5 F9 j  D* A
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)
; i0 W2 C; o, X9 _+ Y  L/ vset j3 N1 Y) P& i# b0 E% [& Y
( j + 1)

& L  }8 I; P# J4 R: g]
& G  c* _' Y( R7 l8 V' T# wset [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 Z& U# {6 A8 {) `- l) O3 q$ m# x& w9 H) U- i
! Z9 J. U" f4 S% c, z3 ^$ U- N
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( T! H# m9 a6 q3 p/ s/ N/ M6 y;;
及时更新il的评价质量的评价5 p3 \, R& L7 i$ q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 }, L" K4 \5 Q' _
set l (l + 1)
" r7 J( O0 B! R]% @5 o* N; @: r1 r3 O4 d
end
8 x  b& Y, ^6 c1 O* h/ t6 V  Y4 K8 ~6 R* a
to update-credibility-list
" x6 K# }! B% _9 dlet i 0& T6 G+ Y8 @% P
while[i < people]
( B8 T% @* h% t5 r9 |! _[
. p9 H# N5 n# D* ~$ olet j 0
3 L2 Y9 u; ^- b: j! glet note 03 B$ m5 Z9 n7 v4 Q! c' Z
let k 0
, A9 |* ?3 `, y; Q, M% R;;
计作出过评价的邻居节点的数目
2 \3 x& Q, u* i0 P8 J1 wwhile[j < people]9 I( k; o* u, d. q' c/ a4 [. y
[
6 A7 k5 I. b( `% F0 Fif (item j( [credibility] of turtle (i + 1)) != -1)
" p- c8 x" O% [) F$ T0 Z' B: Z3 S;;
判断是否给本turtle的评价质量做出过评价的节点
) s2 b1 T9 H9 U1 r[set note (note + item j ([credibility]of turtle (i + 1)))
; u( L& Y% W* P( W;;*(exp (-(people - 2)))/(people - 2))]

* M# Y& J( a* {; l% E+ cset k (k + 1)3 M) {8 ~8 w: Q5 \  U
]% {$ g( g5 B' @! `+ B! ?$ i9 `
set j (j + 1)
6 P1 J' r9 f" ^! E9 ]& w]
( `3 Y3 g4 t' [$ Bset note (note *(exp (- (1 / k)))/ k)) s9 S8 s7 C! b" i
set credibility-list (replace-item i credibility-list note); K" |) J$ d7 J: Q9 h9 s, g: w
set i (i + 1)1 o4 \" h8 C( n$ ^6 y
]
. S. l8 g8 i) W& vend2 @$ b% Z5 W; H5 [9 M
- T3 o4 A. j0 i/ A
to update-global-reputation-list
$ Y8 L! @- s) ^: x) wlet j 09 W/ F6 @9 T) v
while[j < people]
; m; R: `" ?! Q; W. g' U: O[
8 M; h  J+ N$ r- W* _3 E/ Vlet new 04 U9 {) T8 C% H9 l
;;
暂存新的一个全局声誉
2 {) X2 k& r& [. r5 S* I5 G* alet i 0
- V5 x6 Z- t% ]$ Y( I. j' v4 s  L2 Mlet sum-money 06 \% T5 J& E8 M8 m, A) F0 \
let credibility-money 0
2 \! C, Z9 N6 Kwhile [i < people]
& z. G, |  {  x! J  D% q[
' L; [+ Z5 u8 o/ R* ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ |$ T7 y2 k# \1 ]( ^' Jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 r8 X2 B& N$ p, c) nset i (i + 1)9 ^9 T/ y6 \* C7 l* O
]
* |) r3 j) X+ ]& f/ w# \  nlet k 0
; |7 ~8 J# W3 N9 {7 U4 ^let new1 0+ m; s. P/ ~. l6 X
while [k < people]4 R8 F0 k+ b4 @8 M$ _1 O/ @9 B
[# D0 ~4 |% a+ g" p+ Z, E% d
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)# r% x! e3 D- R% o( E% V
set k (k + 1)( o( T4 i3 \% w3 z# [
]3 z2 K+ O2 `1 I7 A- O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 Y! O( ^9 r9 o( y# \0 n/ ~# p- V
set global-reputation-list (replace-item j global-reputation-list new)
2 K1 n" l6 Q0 I& F5 _set j (j + 1)4 a1 G% t* c/ }. ^/ N, p
]
- k, [& s% z3 dend
  Y2 M! H! z5 u8 y9 y6 T  p4 \
! a; j/ I' K/ k. Y6 ~/ H6 x4 X
3 [/ v: o% j( E9 k: D4 V
to get-color
/ m& m# n/ v3 B8 V! [; Q
, D/ D( T7 q3 Nset color blue

$ ~7 n5 f& D+ \" Eend
; W" D5 `( _# k
, Q9 I( i! e6 Vto poll-class
' @, H% G, F) T$ ?end
" Q8 K5 D, e3 ^: t
9 ?$ b# [! @9 S& Nto setup-plot1& K  L" w  h# Q# Q' A; \' Z) o
% l8 @/ c2 _5 j% G
set-current-plot "Trends-of-Local-reputation"

! F- v, `- H3 ~4 `% ?: ~' r' K  ]( T6 c
set-plot-x-range 0 xmax

" v; |/ x5 A# M" o$ S6 p& q# X6 |+ H; K! H, w1 c
set-plot-y-range 0.0 ymax

: n6 Y! G, w" p- hend
% K, t: ^5 A! C% q) c: ^
& k6 C3 V0 r. M( oto setup-plot2
5 Z' g# J8 G/ n/ S- F
7 g7 z; G' {8 k9 a0 G% ^4 j5 Oset-current-plot "Trends-of-global-reputation"
# [6 V5 w0 `3 N* [/ n" \

5 ~- ]5 ^- W0 j- w$ w6 K+ vset-plot-x-range 0 xmax

  {) U0 e1 Y" w/ |) D" k' ]& |0 {: f7 d1 S! {
set-plot-y-range 0.0 ymax

7 Y5 X' F- l5 a# K) S1 Q1 @end
( d0 R% g/ ~9 R) ~$ Y9 p
1 O! Q$ l( C- \to setup-plot3
# e, u/ x: ?! T  |" H# r0 F! R% [7 z8 ]8 i4 Q7 g: C% F
set-current-plot "Trends-of-credibility"

: v) i# n5 y$ ?
* g, u" T# i; m4 M2 \set-plot-x-range 0 xmax
1 z" g# P0 z$ q, v% u) _7 G
$ a, ?5 t2 P/ `1 [
set-plot-y-range 0.0 ymax

8 D2 b' t1 a6 Lend
2 S5 w9 N2 W" `- _! k" f" Y& w- a9 w
to do-plots6 @0 t6 j0 P5 I3 r# s  l
set-current-plot "Trends-of-Local-reputation"+ g7 F: c$ {: y0 Q% }( U$ w/ T
set-current-plot-pen "Honest service"6 D7 E9 u- p# ~% N
end2 f% y1 E$ d" D( t. I

% d* N/ I+ C6 t3 m[ 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.
7 l8 F5 z9 _6 m7 c8 N2 H2 E4 u/ @4 I7 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, 2026-5-15 16:42 , Processed in 0.025914 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