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: 16524|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:6 V+ e4 ]0 J. Y( e4 u% `: z/ S2 W
to do-business
  P/ H4 m, b; V" K! U: \ rt random 3604 R8 K- I8 K2 q
fd 15 I) k. {) I- {4 s2 {+ ?# q
ifelse(other turtles-here != nobody)[2 S7 ~% e4 _- c1 \( L
   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 U% z( A9 Y+ Q! m8 X4 y3 F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 R( q" w6 W3 ^/ a! H% F! j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  s* g$ e/ D* H8 ~8 V  F( h
   set [trade-record-one-len] of self length [trade-record-one] of self5 B* _3 ]0 q# @6 q0 |' \$ t; ^
   set trade-record-current( list (timer) (random money-upper-limit))( T1 }  n! s/ Q, s
5 w6 P2 Y( ?/ Q" S  W- D
问题的提示如下:
  T  p! H  f! ?8 m; k( C6 M( u7 [7 O3 z1 p' I  R- n
error while turtle 50 running OF in procedure DO-BUSINESS
# u2 y  @2 I! m+ J+ i2 A  called by procedure GO
  E0 N8 D8 x8 L; z3 MOF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 {: F# f, Q+ @" h# Q
(halted running of go)& ?6 z. x7 \6 v' w7 Z' K; S$ h
2 A( x3 M3 v  M6 {8 N9 i6 h5 @6 U
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~~# h, o  `8 P3 W1 h! E0 g  C
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
" g! O) ^; P9 w  E, @3 Yglobals[& [1 j( L9 O; S8 O' n
xmax
& K- l4 _) C. ^8 t2 m0 p' Q. Uymax
& W$ B* v5 M& \$ t& j- _global-reputation-list5 M$ q" o2 J$ ~1 J

9 [3 o- L2 Z8 N7 A7 x;;
每一个turtle的全局声誉都存在此LIST
5 L% T+ ?) e1 J$ Vcredibility-list9 V2 W) h9 r$ n( \% v
;;
每一个turtle的评价可信度) i2 @0 E+ }( V  O. l% @
honest-service
! M6 q( |7 C2 g2 b/ p' ]unhonest-service
. x2 }7 R4 @! Ooscillation2 \- |: S& P4 H6 U
rand-dynamic
1 t9 P1 w* t* a. Y5 ^9 ^]2 j' O/ p- s' N  L0 Y8 d

5 S7 Y/ f" X4 c6 U3 sturtles-own[
8 F+ b( m- l: ^! ~, v7 r! W) Wtrade-record-all  B1 K3 Q" d" x* I( W# e
;;a list of lists,
trade-record-one组成
' G& [5 W; E9 x4 X% G% Itrade-record-one* {6 {; v- }4 C' V. Q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: `$ Q( m6 \$ Y5 n2 D( w
  B9 X# f+ R$ O& P* W;;[
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]]
) v7 c. x8 B4 a- {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]9 N1 e* {3 k3 d+ p/ _, v! z
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" r+ G- c; Y/ b$ p; h
neighbor-total- L+ |$ i; s! G! |
;;
记录该turtle的邻居节点的数目
: d1 ~1 l+ R) y7 J' Z5 ]trade-time( P" p7 S- Z; |; F) C
;;
当前发生交易的turtle的交易时间$ x+ i9 s3 E5 k. g1 a3 w9 V
appraise-give
$ Q7 a+ O: D3 d. m2 B* l;;
当前发生交易时给出的评价
! l2 `" p3 C' ^8 zappraise-receive# s  Z: P. n$ S; O$ r) e1 n
;;
当前发生交易时收到的评价
' w9 I+ w* ]! V4 r! }& r9 Cappraise-time6 y( I  D) J/ {0 r
;;
当前发生交易时的评价时间
! v* y+ w' V/ T! f. mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
- z5 x% E; E$ S2 x9 b' x9 t. btrade-times-total$ R- s" [# r) G2 g5 D9 y- f( n
;;
与当前turtle的交易总次数
* u7 D+ a6 I7 g3 Etrade-money-total
9 r( Z0 |+ p, @0 C9 [/ b% r;;
与当前turtle的交易总金额: h* W) }' l: Z# q! K$ a! Z
local-reputation: i1 ^4 q! ]& ^3 x) I+ F( c  [
global-reputation6 l% w/ l/ T" v! A+ P  k
credibility6 ~3 Q. h* j; T$ H, t
;;
评价可信度,每次交易后都需要更新0 E1 O; _2 I' G8 g
credibility-all" o1 _( w' g. w; Y* e; g
;;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
! u2 T/ H: g% W# F; S$ W4 y4 U# [" V8 d! 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
- `7 s7 P; d& M, v7 Xcredibility-one
7 a$ B- H* ?) H" t6 t' I;;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- x3 ^5 X; B* c5 N8 s& \
global-proportion' W" |  z* C. ^  I) S$ K7 ]
customer, `/ M. k$ O, l* z
customer-no: P" t$ l' C4 V& \  I7 G5 m! u2 c
trust-ok/ r) O( a; O/ B& s+ J& ?# R
trade-record-one-len;;trade-record-one的长度
6 k* l. F, J% v& R8 n! R]
# r8 ?  s$ b4 T. N+ u' s5 S) z6 P3 q; H% V
;;setup procedure1 Y" m  J1 d  P' F: M

9 ?8 G4 ?1 o2 m5 ~2 E0 mto setup
* ^8 Q% v/ t2 a: a
" f* V- j; J1 _% lca
6 R" Q% r2 G, v
5 h+ v8 a& ^0 o# P, D6 D7 b7 C/ a' w
initialize-settings
  Y; K+ G7 a8 N2 l- B% h9 w8 r

/ W) r) m1 _/ z& Ucrt people [setup-turtles]

5 p3 V. B% ^# I% x4 J% M9 P, r& {: a- D" a; u! O# v; @8 i' r+ R$ L
reset-timer
3 p" |" I; k- u8 x% h
  d4 ?' Z% S: _5 }% {2 F- ~) B  u+ R
poll-class
6 o% t/ Z1 E7 A; G
& B% N+ |3 y, ^: m: A* c
setup-plots

* j2 q, Q5 [- E; b0 L& k
: o0 Y, h& Q& Cdo-plots

: [. E- O6 Y1 N) |/ w7 a! j, \" ]end5 P. o* f7 b5 g2 ?- K$ Z

  o) D1 y1 L" H" z/ Pto initialize-settings
$ {6 ^! D) A; o$ c5 n# E* r
! c9 n* x4 a( \" _. d! S& F6 {! h, _set global-reputation-list []

% M1 S- D% K) \) X$ Y( B9 u! ^: S  S9 ]- l, U' J
set credibility-list n-values people [0.5]
+ r4 Y) ^6 P; c
' k& F/ {6 r# F! t8 I2 w/ s
set honest-service 0

; x7 }4 l' h& u4 o# Y' S4 R3 s& k8 D" f( S$ i3 D; U
set unhonest-service 0
' z; v( H. V! t9 O- ?! ]% b* v

# b7 S; o6 K0 Dset oscillation 0
% k* S7 a% x% Y5 k1 V
  {; \& N: g$ A* H& ]& X$ a+ Y
set rand-dynamic 0
$ {, y( u% F! T
end
1 c! x5 t/ L+ ~( {8 B) k4 j6 r
' c6 m2 Z4 h, \9 d' G' Hto setup-turtles # J- `1 A! g+ O1 O7 _
set shape "person"& k6 V* j2 C8 i& }* u6 ]: [) w5 @
setxy random-xcor random-ycor1 @. w3 e4 f% T* ]: l" ~8 k2 A' P
set trade-record-one []
# u7 I8 d4 R" \8 N8 x. [- G: Z9 y

2 s; J" x/ |; {set trade-record-all n-values people [(list (? + 1) 0 0)]
" M9 F2 K+ j* m: o& b
& V2 M0 B) j# Z7 ~
set trade-record-current []6 U; x( k. J8 d4 M7 a
set credibility-receive []- A) a9 r0 p9 E: R
set local-reputation 0.5
: v( e3 w' v8 i) }* X( G  j$ Z, dset neighbor-total 0. C% G2 r. G/ i& J2 B) @/ m$ d
set trade-times-total 0
6 Z2 B- E  @5 c; |set trade-money-total 0
) I% r; F/ ?/ {2 [set customer nobody
8 W  `+ C4 C3 vset credibility-all n-values people [creat-credibility]6 g" @; D8 `& {
set credibility n-values people [-1]# Q3 u7 u* I! K: Y- }" h, i
get-color
! j# v* r* v" i; m- A

; O6 w4 o+ p. M/ }/ ]5 m( M4 mend1 n2 w4 T  J5 f
& X; D: a; \$ C; [! J9 ~1 f
to-report creat-credibility
' b& t& p% P. Y7 c& Yreport n-values people [0.5]8 n: U& p+ V1 @3 M
end
. j% A' M3 ]- d  H3 M' \# k$ v+ g( s
to setup-plots8 F* T) R" o2 w- m
5 r9 @9 w! O4 l; \4 F6 J8 \
set xmax 30
' ^/ l& K( A5 \6 D  h& u6 \6 m

% B  S2 K& u6 a3 I. h4 B" ?+ Fset ymax 1.0
, Q$ ]5 |0 d# a) ?. p

8 b) \- _" e3 ?) u4 yclear-all-plots

9 p8 A6 e: C& R3 H1 Z. @8 t1 \/ f' J/ c# N+ ]+ e
setup-plot1

, ]4 H2 M, W$ B) u* f
- g' O( m5 y2 S% U3 |2 ^setup-plot2
  g- E% [, Q- `- M2 L# s
0 k% h8 F$ B) k; S" F
setup-plot3
) f- a8 [& r" C% F) i  Z
end
1 [8 _: \, s5 [' h+ R
/ W& V9 X  s3 E;;run time procedures
( p( H+ }" u7 p1 t8 u" W! ?6 j: _8 x, o8 g- ^. g$ [
to go
2 a, \1 K+ i) Z, G$ r# o. {
- H/ H" v% x9 U. [9 _& yask turtles [do-business]

* n/ N, }' ^, y& Lend) C3 L8 `) ?# _/ L

8 a4 H* E- p8 mto do-business ' c/ {. C' x4 A5 u0 q
! c& U+ s. S9 b% l" H1 ?
6 B. Z  c: d! w0 a3 R* R3 c: t) t
rt random 360
5 k$ p4 t! t- m  W+ `: ^( \

; w' u% ]3 r" F2 a2 Y* L( S$ L* W& Bfd 1
/ [& Z" Z0 n6 v1 Q! T- K% `1 V( M
# j0 i: |. D2 a& p) d1 y. T) C
ifelse(other turtles-here != nobody)[
# D! ]4 Q: _* C( t* t6 Y
8 _& i* \: N3 z) L: _$ |
set customer one-of other turtles-here
' y9 U8 z0 _( v1 P/ X

4 N8 U+ m9 Q1 Z& Y- s$ Q3 Q;; set [customer] of customer myself

% t' h" }! b) [- z0 T, }4 |6 p/ Y) B4 _  Q$ S( i- L
set [trade-record-one] of self item (([who] of customer) - 1)
5 k/ M2 p* n2 F( |; G[trade-record-all]of self( R+ O, O2 H) k  M) v* d
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 U7 A! R9 ?) q4 [
% u; `4 f6 R0 e1 t" Y
set [trade-record-one] of customer item (([who] of self) - 1)  x1 H4 u/ `- G' i' r
[trade-record-all]of customer
" B+ r" g4 c( A, `9 T, j5 N: M% r
' t  s1 ]0 z0 b" c
set [trade-record-one-len] of self length [trade-record-one] of self
3 i- g) m1 b9 q) d: C! \0 f
6 J% i  ?. H$ I- H$ O
set trade-record-current( list (timer) (random money-upper-limit))

7 `: J. `' g/ y) d, W1 I+ Y! `* @/ x/ _' J, B7 s8 d- t& B
ask self [do-trust]
8 M# [5 G& P) n5 K  s3 _; b;;
先求ij的信任度+ h9 P6 ^6 ^" l
- b2 F  {+ R& X1 Z9 c( y' o/ U
if ([trust-ok] of self)$ [# Z8 W  v; Q/ G$ W
;;
根据ij的信任度来决定是否与j进行交易[
/ n7 y& X4 u* D2 kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, w* Z9 o% K/ m9 ^+ O7 V
- T3 ~( l  U. n* T8 k0 X% U[

8 {( Q( f- Y1 X+ z
3 m" _% _: G. [2 Y1 ldo-trade

0 d& |5 |; |# b# n2 Z3 N+ b( B! |- `  z' f9 S, A- F
update-credibility-ijl

* L$ ^+ \7 S! y5 \; L, k2 C% E  t$ n
update-credibility-list5 W9 f  y/ V* E* M

6 U- w% @9 H2 b
% D/ U* Y, p0 ?! z6 D  _0 k  [update-global-reputation-list
+ D* `) }9 e" O$ q. c, Y
/ Q9 x! t- M, E% p# T3 M1 M
poll-class
0 o4 M  i+ x5 g: J' u# b) W

1 F9 d4 X$ A& a8 p$ o6 b, r; Sget-color

3 y5 X( E0 A. V3 r7 y' I
! L# r) H) \+ _' R4 m* w$ ], a]]5 @8 `/ k! j" @4 g

, ^6 M0 O5 M: E- }3 v) |;;
如果所得的信任度满足条件,则进行交易* v4 n- X" N( o: V( k0 x0 y4 I

* D9 u7 m) a0 z% h4 l[
! r/ y1 p8 N  r6 d4 T' R

; K, w* z9 w: q" u( g+ Y, hrt random 360

3 I6 @1 x3 K. @% m' O1 R2 n
# L) z) s6 g: m: yfd 1

; Y  x5 o8 O/ ]/ q# b- v- ~7 w: G" I3 J
]
7 N; [8 y/ j! n5 [+ f

; l9 i, L0 p; _end

- p# A, X) D& [8 A- E, G( i2 C: o) A6 k- R$ }. f& q! N" `6 K
to do-trust
6 ]6 L4 E; L, r7 m7 c$ Nset trust-ok False
& C  r7 j# i6 h* ^' @# m. |* H" d0 q1 @2 H: G& T* R" z
8 w9 @( d& V) d* g& }( Y; B
let max-trade-times 0
6 W# ]) X: r# n0 `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 D5 |# B' G, t* ]4 ~( v
let max-trade-money 04 ^! k+ M' A0 k$ p6 b3 z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 l6 q$ I8 ^3 M* j$ Z! B- ?
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! u- z2 J5 b- M" J) n) S+ r
# F. b& C! Y5 w8 p' H) [

" e( ~7 {$ }- n# Qget-global-proportion
2 V$ X$ S4 L% p% ?6 s- ?let trust-value
+ g" c% o' Y% o5 q( nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

! B( [, {% P% d4 fif(trust-value > trade-trust-value)
7 N# a+ d+ |* R4 D! T1 J[set trust-ok true]- b* V, i9 @1 L. }, d' z
end
( P7 n; \0 B& b! p& ]- ~, r
! q- j: R, K! a* o! s: M5 X3 cto get-global-proportion
# U& `1 x5 P7 ]! {' M( R6 Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 A: r9 I; O. \& D, ^- O/ m[set global-proportion 0]
: ?% O! q0 u, k* M[let i 0# |5 V% ]8 u3 K0 Y: v3 w9 q
let sum-money 0
' u# h8 O+ ^. U1 j- f! fwhile[ i < people]
7 x/ Q: [' x, W* a/ O" D[4 U! G# Y. H  K# R- x" D
if( length (item i
- W' `) f' q" s* j[trade-record-all] of customer) > 3 )
8 p: }$ n2 L. k. u+ P& ~; Q8 X, C
[  d! y) ]2 F; L/ m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). B, f7 \' A0 q1 w" G) l: d6 P7 e+ Q' P
]/ j. ]  B, B: T7 l( W! J; i
]3 p: s. o3 F5 i  `2 t
let j 0
& M% e  A. }" dlet note 08 a. W  L8 k4 u
while[ j < people]& p; r4 t8 M# S% Y' |8 ^& W6 K9 D
[. J; N0 A1 [1 S1 `( L+ ~( _
if( length (item i
% m& `4 j# P# F: U4 o[trade-record-all] of customer) > 3 )
! J5 `& {. ]/ k5 r# j- J. k
[7 w, P& T. X* K
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): [( H% N" f' X+ m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! J! q% h; [2 l# ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 d5 y& t) r) d3 n# [9 _" B' [
]0 H1 ~" D8 T5 Q6 _7 F9 ]" y: _
]# ?5 m" T$ t! c/ H; ~& o
set global-proportion note$ L* K3 k1 u; s: P" o
]$ c  n3 }& ^* i% D2 W1 P& r
end7 I5 l, J( k7 E) H7 Y, D# P& m

( O/ N) A4 m& W' C1 P" f9 y1 }to do-trade
0 S3 n) E5 w+ W4 j9 {. y+ c! R; l;;
这个过程实际上是给双方作出评价的过程8 F& s( N9 ^6 e  v4 V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' ^3 n% f2 Z  Q+ _0 z) o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ C9 H* F/ C! X6 A( Y9 x& R3 _
set trade-record-current lput(timer) trade-record-current
: t$ D+ e& A$ v( E. P: W;;
评价时间
# L! U% g2 o2 h# qask myself [; J* R6 j' z- I4 B% r& I4 o
update-local-reputation
9 R' L% @# r3 R. Wset trade-record-current lput([local-reputation] of myself) trade-record-current7 ^4 @; o& P3 _+ n4 u. X
]
3 O  h" ?; P& ]6 nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* T& a' t. B/ a( q& f/ i
;;
将此次交易的记录加入到trade-record-one
& l1 A8 ~& f7 Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  R  X# Q0 a" Olet note (item 2 trade-record-current )
9 ^  |1 D7 ^4 ^set trade-record-current
% L' j  ~5 F: b' M# F" x$ x+ R(replace-item 2 trade-record-current (item 3 trade-record-current))

  s3 s9 o3 r) i! Q1 Q6 w& ^set trade-record-current, e0 y4 h7 H7 ~2 {0 ~
(replace-item 3 trade-record-current note)2 V5 R  ?2 g4 ^* \. D

9 d/ p3 M- x  _* X. |! ?# l
/ N- N6 h3 o+ ~4 H% S) Q
ask customer [
7 [8 D4 R) \9 e2 `! V* f1 nupdate-local-reputation
, i% N: g' }9 mset trade-record-current
+ `) t% a$ |% C1 [! z2 z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ R2 n9 v/ o" |) [9 b
]
3 w- u# S7 q( v: e9 a5 q7 N' K
' A2 {$ H8 i. `4 X' v
' q1 E0 K: P- v- D$ V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
$ a5 P5 b, z% q
: s1 h7 ~) ]- h; V6 e- v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), T  O* m, w- j' W) o* R. E' M$ X
;;
将此次交易的记录加入到customertrade-record-all1 y0 @% y8 d7 n' N2 ?3 J
end8 W* H4 K' j0 @: ?  o! M% Q
- ^  I; W# u& o+ |
to update-local-reputation
$ T, R$ {. i. [set [trade-record-one-len] of myself length [trade-record-one] of myself
- ]- f2 M4 \; E& x9 M+ W0 @% }3 C+ r# p* G% |

1 ?0 P1 }0 d& n- A5 l;;if [trade-record-one-len] of myself > 3
2 P# y' \& i, o4 ?$ z' U/ s
update-neighbor-total0 C6 c" _7 u" ]. p
;;
更新邻居节点的数目,在此进行
" z% \& u+ S. r# Hlet i 38 T7 X4 F1 U( S' U6 H
let sum-time 01 T# K; e5 Q8 e7 @( O( P$ O& O
while[i < [trade-record-one-len] of myself]7 F7 u9 ~3 }% N* i
[+ W) x% X- x; K4 w$ d" m. O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 D5 a1 R/ f! n6 ?1 b
set i! @2 R( M2 Z1 w; z3 o
( i + 1)
! I' ^% z$ \% \0 L
]
+ P% B: z8 q8 q2 Xlet j 3- W: }6 F% ^2 `
let sum-money 0- j! p8 b$ x% m& k' d6 o
while[j < [trade-record-one-len] of myself]2 ?* X. e  A" V6 i' H: M% N
[6 a8 M, ]6 s( S/ J" H- F) T2 B
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)
# K4 n5 ~; L3 ~7 gset j4 ^, h8 K2 |6 Y; p
( j + 1)

& r2 w  t: n( n]* n; b2 I! [+ R7 M
let k 31 K% s+ }9 T) m2 p
let power 0
8 o! L5 D+ C7 n+ O5 ~5 alet local 0% \, g5 C) ^! ?7 ?/ u/ b
while [k <[trade-record-one-len] of myself]
, B( o! J7 p. {/ h) o[- y% `  d2 P& U2 {0 U# O1 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) 4 B$ r( o: S- P1 L$ k
set k (k + 1)
- n2 U+ z' v0 _]* O" c# b- [. K5 Q# K2 M: `1 l
set [local-reputation] of myself (local)* f! T& ~. x/ q1 _
end
+ L/ K$ [, b4 y7 K  E- _
- J$ f0 P; |# z! Ito update-neighbor-total7 ]% E, n1 G9 f. b

1 X8 m. }& r, b1 m: S6 Q3 _" wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]1 _/ B9 H& g* Z: K

( g/ ~/ x7 _- |7 {
6 ]0 Y6 q7 ?" U2 v: |
end
; W- i: n1 N, D
6 K) \4 `4 {& e2 @% Kto update-credibility-ijl
# U4 f5 T7 F2 X% |( C9 @$ v
7 {. s) c) @4 i+ @/ q;;
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。, a, \( g& r! c) x; f
let l 0
/ m. b5 N* K6 G3 o8 Uwhile[ l < people ]3 @. U4 u. z9 {9 Z
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价2 i8 `: m8 T# N* e  F
[
! e& W9 U- i' \) q5 F/ ~let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- p$ `# P$ q1 E8 }7 [8 Zif (trade-record-one-j-l-len > 3): w2 {% |4 K8 S- D- C9 R
[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
& ~; b' c8 n3 x/ Q7 S9 F1 Slet i 3
% k8 w" O! S. f: Flet sum-time 0  h7 f& X& Q1 _0 C* h
while[i < trade-record-one-len]  h) T  ^- t, x6 N$ |7 a* L
[7 K# s: A: Y' I' U1 f% H) h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% F6 O/ V! K: ~
set i* z3 d: u" j. _' s, D
( i + 1)
  J3 T" T8 b' V
]7 p4 W$ W: |% g9 v4 D7 W2 u
let credibility-i-j-l 0. f  E; k$ i/ T& A$ a7 @% g
;;i
评价(jjl的评价)
& Y  r2 Y3 n# B; plet j 3
8 G* M0 K3 a/ D7 n' g) blet k 4. p% o' I5 F! d: I+ ?5 O1 O6 h9 [! k
while[j < trade-record-one-len]* T3 m5 u& \! w2 T3 @- f9 h
[
6 {4 `9 m; W' n% Iwhile [((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
. d6 d( g6 e. j, a3 _3 ?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)4 K# G0 C# B; U
set j& Q" c; a' X  q% v6 M
( j + 1)

( I8 C9 u4 l- |# j]
7 U& P' S, S) S9 e5 q6 g, ^set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
" L5 X1 }( g4 s! d  |& V/ A+ H: U/ v& ?1 t0 f, |' v0 t+ @

" B, ]; V3 O2 J; M; \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ ]$ _. v5 m, y# v3 z0 f- T;;
及时更新il的评价质量的评价0 H% o% u+ }4 |# s( X  v9 [" B
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! H* w& i% S' n, e& v* m
set l (l + 1)
. o$ [0 H7 w! {7 `+ I6 ], [* g2 ^]
  \3 m$ e6 t) N( _' b4 d% Fend
% {  y% O' Q8 c  @2 q6 }3 U7 V+ Z3 H9 g. p
to update-credibility-list5 K$ q7 y! k. A" n
let i 0
& s" h3 V+ S" P; N( swhile[i < people]: B2 d; O) _: ^6 H3 l* e- w
[
& j+ D4 T6 f6 plet j 08 \' v; s: I0 \0 I
let note 0
7 w+ Z/ q9 m, P1 [' hlet k 0& a7 v* E9 ^& m4 }+ _& O
;;
计作出过评价的邻居节点的数目
! d/ B* V; f( N  O, Xwhile[j < people]6 Y+ z8 P: v  \1 r* ]
[; }& O/ L0 k# X" j
if (item j( [credibility] of turtle (i + 1)) != -1)( ~* \0 e# Y( c/ q2 `/ d
;;
判断是否给本turtle的评价质量做出过评价的节点* {- p- c  t" d4 E
[set note (note + item j ([credibility]of turtle (i + 1)))  ^0 ~6 n: b: {* \
;;*(exp (-(people - 2)))/(people - 2))]

. k6 v2 T* @% \( V* Y( Kset k (k + 1)
7 L& r5 W0 y: j' d, P6 c3 K& L8 E' p]
1 j, F' \4 Y9 {0 a3 {set j (j + 1)3 d& K) F  }/ L8 p' D7 i0 V
]
6 V$ z& E4 X. W& E0 X9 ~set note (note *(exp (- (1 / k)))/ k)1 v3 K0 j; h8 w4 P
set credibility-list (replace-item i credibility-list note)7 `9 Q- I+ D  g) w
set i (i + 1)8 i  p6 B) h" x# H" {* u7 |# N
]
7 F" m+ y# U3 v3 `8 p2 v' lend1 L# N0 s3 h4 y( k- p
! K8 H4 L5 ]9 x# L0 Q
to update-global-reputation-list
0 v# L$ t( \* v! n0 O# Z9 Xlet j 0
- J( H; k$ _& c, J7 M1 hwhile[j < people]
' j" e' i' Q+ G2 c+ n* K; ?[
* R& M4 z5 X0 N' ^& u2 ^: ^6 E4 G4 Clet new 03 ~% e( u" H, j
;;
暂存新的一个全局声誉
+ d  F; |/ H7 c4 m- J2 ^( |let i 0; A$ q$ {- j% I6 s# B
let sum-money 0
/ J$ B8 t2 J. N/ p( D# I# xlet credibility-money 0* l+ G& m1 n. e" ^6 C$ M! w
while [i < people]
- D0 J/ Z! g6 ^+ b4 X[% u+ [4 d' ^& E/ x; m: }4 w
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 e3 o, I9 b: ]# L# Z3 _" Y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))6 w, O; F# M8 L; {( x
set i (i + 1)$ D% G, z3 [. W, S- L: g) i; K
]$ I; x4 B, H- Q7 Q" p3 V
let k 0
7 D  X  y/ f# P) ~, Z+ X) b# Glet new1 0
9 o$ q& Z- Z! Q6 B' L. C7 L( Kwhile [k < people]
% V% k6 E1 m/ B+ m& b1 T[
. E& _- C  i2 s% Zset 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! R; m: f9 \, h
set k (k + 1)
0 Y# R% T, M# X6 T]
* P- {! a' {- M3 r% Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - i" g# B) v' I, h& T' |# P6 ]7 O
set global-reputation-list (replace-item j global-reputation-list new)8 [) y! ^3 O" H% K
set j (j + 1)* X' h8 _  S; }: V' B$ W
]* L  D' E/ ^! r& M; W" v
end4 N5 J; c+ Z* E, X) N
( i' Z6 o! i( o; o7 l" L- w

& F* |1 |% x- D- _8 a/ _( n# X$ R( m9 J
to get-color
: c5 a1 F' X: @9 P9 I) |: s
: T$ C0 X) H' O" U/ `0 D$ ~. \, d  `set color blue
3 t& m2 E- J5 m
end
; z% {* p! `3 h  `' L( S) r, o$ b" R! m7 E- ?. {
to poll-class
, }$ D; r6 k3 n. G" pend
7 W/ b$ w. F" S! i& C
& S$ T: g, C& Z9 Xto setup-plot1& m5 f7 C# ^2 V: Z
% U( q+ |; U9 K' g& Y; R
set-current-plot "Trends-of-Local-reputation"
5 `; I/ ]3 F$ z2 j3 ~# C; [8 _: v9 c

: J+ d- T; P4 ?, uset-plot-x-range 0 xmax

/ [% @3 ?. s' L/ c( M  _: y+ K
! a: J# s7 Y3 i3 r9 q  r$ Aset-plot-y-range 0.0 ymax

. D3 J" z1 U, Y% y% tend& Y5 j; J. ?4 N
9 p5 \& J" I* R2 W
to setup-plot2' _& l6 p8 z" i8 G3 {# O
0 y2 m3 \0 Q- [. y* E' K
set-current-plot "Trends-of-global-reputation"

6 Q7 l* Y' k3 X4 P; F$ |  {0 k" w6 U2 `) A; {& T; V8 i' e
set-plot-x-range 0 xmax

; I4 R% H8 [( n  o, t+ P
( o! A: i! ?4 W; o7 ?5 `set-plot-y-range 0.0 ymax
" ?: ?2 a. \& T9 E; |6 O. s( M1 r
end2 F' m$ [, E# r& Y# q* ~# e

. M- w4 O  c' W5 Z7 Zto setup-plot3
& h- g# F/ ]/ z  F$ P: `) h
# `+ l' S8 k! l* }# ?- Vset-current-plot "Trends-of-credibility"
/ K! `. T# F( t* W

! Q* c# H1 X2 b" n8 {. L( T$ kset-plot-x-range 0 xmax
+ \8 G+ X( X7 S0 ~: e$ K) u
% @  s  `5 L% d% X; K5 d
set-plot-y-range 0.0 ymax

5 k8 d1 e) Z& S5 ~7 Cend
& O- S5 K0 E4 k5 l- f) E
/ T7 X8 F5 z  ?to do-plots
/ Q5 _3 j% y* q3 U2 k$ D4 Eset-current-plot "Trends-of-Local-reputation"& X; l' W( [- b8 U8 i
set-current-plot-pen "Honest service"
+ \, u7 _" H  s0 H7 N+ cend) T9 M  T! l, q/ Y4 o  [
5 p6 m/ W  n# O/ `4 p
[ 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 m! C( q' h# B4 S# e* V- {

2 M* S# i- r, Z& K  [& h; e这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

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

运行不了

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

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-7-17 13:04 , Processed in 0.020764 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