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: 10431|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:
0 [" O7 y3 v$ U  T8 L% Hto do-business
  d, N9 x: m; k/ h0 R. ^ rt random 360
) K% _) F. n4 W! \/ c fd 16 I( N  P: q2 u
ifelse(other turtles-here != nobody)[
( n+ k, l" K+ \9 i/ Q5 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.
4 u+ R, Y  N) T4 R( b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) J- f. z! E7 w/ _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 O$ w* e; T0 Y
   set [trade-record-one-len] of self length [trade-record-one] of self
/ f! w* ?0 Q+ [3 ^" P* @   set trade-record-current( list (timer) (random money-upper-limit))
1 C0 A+ n& A* T! I$ Q+ F3 y: b
2 Y: Z% P* t: u6 t问题的提示如下:8 s+ L  }: m& [3 I3 z
# C! N7 x( a5 c4 d; ~
error while turtle 50 running OF in procedure DO-BUSINESS; v  x5 z& j, o1 W' c7 \* V3 r; ~
  called by procedure GO2 G* S5 _0 E2 d. ~! V: w# {/ {/ S
OF expected input to be a turtle agentset or turtle but got NOBODY instead.( I( U" Y: m, }: [8 V
(halted running of go)
4 w0 _! z/ f7 L3 ^& g. O
% X! O: K, k& y- f' F# r9 Y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~~  `) A- v- `# a6 \: j, Q( Z6 R
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( h$ O. p* l+ y; I( f% h  \! L3 v
globals[. i0 r4 k% n9 @1 d+ o& r* @0 ^# f
xmax5 w; R( \+ L: U0 Q  u+ A5 V- j
ymax
( `; Q9 F0 W; d) Z8 Q) G! ]& p8 }global-reputation-list" r5 ^( H' \' R

: ]; h5 U& i% p0 T" Y2 L( P: l. A2 f;;
每一个turtle的全局声誉都存在此LIST
) V  w, X# a4 D' Q0 s" g/ i5 xcredibility-list/ @4 K) A* i7 j  I* [# p
;;
每一个turtle的评价可信度" F3 ^  O8 e3 A& C3 R1 C/ j  d
honest-service
: ?) P5 s8 v) a4 x4 ]unhonest-service, O6 l! X' s& Y: q
oscillation
  v/ O& X3 }1 Z) nrand-dynamic3 g0 m& S$ w0 J* a' G- [4 y0 h, i
]
- w4 D" J% e4 P/ m+ Q
1 t# V% u; |" R( U" q" Q0 s- H% P# ?turtles-own[) H+ E" @8 m4 e( L: _* w
trade-record-all" P7 C! B& Y! r& [' }2 _
;;a list of lists,
trade-record-one组成3 u8 J: ?( z. h& K8 Q" K+ k, N/ z6 u
trade-record-one- n/ s$ t: N! O( M, @* p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, ~% J2 t- F# N6 a# i0 r4 `
' Q5 _1 k+ K4 j& ]( Y7 l' Q/ 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]]
* s7 P1 X( P$ S5 Q% btrade-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]
* w/ e9 {* y0 E) m: Y! S. H: s2 zcredibility-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list9 b6 h! b1 e% J/ q
neighbor-total' _! }& h* m- v* @1 P
;;
记录该turtle的邻居节点的数目* M( d6 s$ @& j4 _# |8 v. j
trade-time
. l4 W5 Z4 t1 E;;
当前发生交易的turtle的交易时间
; m2 U9 j; O' v: `0 j+ o; k/ U+ |appraise-give0 }1 B: e2 \$ M& j0 _/ J
;;
当前发生交易时给出的评价. b' p0 C& ^9 \4 r
appraise-receive! b5 `* O3 Y. ^2 I: B
;;
当前发生交易时收到的评价
& a: e/ ]$ u* t" X" ^3 ?+ tappraise-time9 \8 D$ O" b+ d2 A$ E( M
;;
当前发生交易时的评价时间% P- a1 |- {% U" V$ m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 F' o' `2 T2 v7 E+ B, h
trade-times-total" U6 N5 x# p/ o* W
;;
与当前turtle的交易总次数
5 {$ H! Q- i/ N! e: n8 }, L2 ptrade-money-total
! C. [- y  y) X7 Q$ z;;
与当前turtle的交易总金额, T7 T: C+ ~9 M( i% s
local-reputation
  _3 t* V1 Z4 w# R4 X" C* Mglobal-reputation' r: b* f1 h  ~) ?; ?! a0 P$ R% [
credibility* B, m- `) [6 |
;;
评价可信度,每次交易后都需要更新
. D! q  I- {5 T& J- M) S! Hcredibility-all
6 f: L6 |% E% X;;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
% p7 q4 Q% y( L  b- {( C; E0 ?$ @! ^
;;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 ]9 V2 s( G- V" U
credibility-one( _7 g/ Y/ x; F) j( X7 [. O
;;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
9 I, C1 f! g0 @4 X# o5 f' B" [global-proportion2 J& b+ d+ L  i" @; c, X$ L
customer/ V  d3 n. \% ^+ K
customer-no8 W; h1 ~  E( d, a# ?" x
trust-ok
4 ~0 o- {. Z/ y: `9 I0 K8 Ftrade-record-one-len;;trade-record-one的长度
3 b* }' W5 E# [8 ]]3 A5 {; M9 b4 R4 F6 D+ f+ w+ U
! I4 t2 X! S; c% s/ }
;;setup procedure# d, U, c# L5 G+ R& |# r' G$ j

9 }9 f, o: e4 ~: O0 @, dto setup: B4 A7 z1 n/ a9 A

- b5 K# O7 }6 L# Hca
2 R7 ?2 ]/ z, C! k. C1 @: |
2 Q% }/ }6 v; c: R1 ]
initialize-settings

: q* a3 s( V$ ]0 u" C' S9 G" y9 V' K/ L* L
crt people [setup-turtles]

( C9 _- a- a; k5 M; E3 q- A3 X5 K
reset-timer

! ~8 W/ _& q. ^* X3 b4 x/ D7 `6 y9 j' |2 f  f5 x$ P$ U" l
poll-class
+ j$ w* a: l) H, @- N' n/ A
: D* ]) R9 e4 X+ s( J
setup-plots
2 Y, {) C7 R9 s* k/ H. }0 U
+ m* M' f5 ~% J
do-plots

0 J6 g! B3 }0 R7 cend
- Y0 r9 T+ B9 j
$ m0 M$ c' t0 z5 J' Tto initialize-settings
" \2 v! x9 U# Y7 l/ O$ l* k) z/ t* r
set global-reputation-list []

$ ~2 Q9 ^% E$ o; |& l' q% [3 l( S1 n: |( t
set credibility-list n-values people [0.5]
8 d* C, i( j0 J! s

! ?; s% _: e: R$ |8 D+ P5 uset honest-service 0
4 `9 Z3 C: n' l/ x* I% S$ J
/ E) s# ]" b2 O5 T( n! [) {
set unhonest-service 0
1 Z7 j2 |" U0 u$ {8 c: _, z7 P6 ]

/ L: w4 U* O* ^! T* x4 aset oscillation 0
& }) f) F2 w: P2 Y" L% ?* b5 c
1 ]" `& f* h# |8 w8 _' O& ~* P' V3 L
set rand-dynamic 0
4 \- V- l! M% B, Q/ O* F
end
( N) G) v. Q4 b& c7 @7 F- ^+ e- U' J
to setup-turtles 8 V' ~. E( T5 f& V6 [
set shape "person"  l5 ^$ z+ D1 y) i  z1 N
setxy random-xcor random-ycor7 u. ^) t- N$ w5 O
set trade-record-one []) J. k3 @* r5 v$ C1 E
' z8 V, W% m+ E- s+ l
set trade-record-all n-values people [(list (? + 1) 0 0)] . o2 l* w: k- B0 i0 v9 a5 k  a
7 f% a! v4 V" K. |# r9 A
set trade-record-current []! H% r$ S! O* j5 J2 y
set credibility-receive []( _! z' \# S% a( Y7 ~5 N4 n
set local-reputation 0.5
7 V% s& `' D8 pset neighbor-total 08 b. U& J+ ?" _
set trade-times-total 0, M/ W& L3 R! M; d
set trade-money-total 0
% V* d: P$ r, u& _* k- Wset customer nobody  k# Y3 _3 N- R9 ^' y6 ?, a( p+ N
set credibility-all n-values people [creat-credibility]
3 _7 I# p2 n$ D5 a( ?set credibility n-values people [-1]
+ b+ b9 T/ r5 U7 mget-color
1 R. ]3 ^7 U, b0 W& |6 D

4 k! \! ~: T, S/ K# ?, o4 m) hend
$ M; X3 I  h. S9 R- o% l) @
/ y- T# P6 {5 ]  rto-report creat-credibility
3 O" y4 s" {# H' F; v! l$ Q( {  Areport n-values people [0.5]* B) y4 [' l+ |4 g% a
end
8 V& Q1 d0 c, P$ M
+ _% o8 K2 l; T: @! A% r' K3 d; \to setup-plots
* r& M7 y1 z2 }3 X. {
$ F% N5 N" `( hset xmax 30
0 Z; M8 k$ b1 L5 d

4 I" d( F- k0 F* P, Hset ymax 1.0

5 `. d4 \, q( R
6 P2 t) l4 J" M( C' gclear-all-plots

* X9 q. {( F4 k) Z
: X+ _5 r% R, w$ d7 Gsetup-plot1
2 M& V0 M/ @# X( ~2 b6 d
2 ^) j( R2 G5 s' U3 F) h
setup-plot2
2 m) _* k+ c- N. p8 W; z
+ t/ m- n4 ?! P) X+ q" {7 Y
setup-plot3
9 J, S! M+ |! d- f" Q! r
end- r: L& D/ {/ `1 C6 \9 h3 x

* U& X. F5 Q: A) w/ Y+ U;;run time procedures1 ~. y( p6 t2 [

$ e  L3 [! Z; P+ qto go
/ J; P, k) a1 I1 j
; W* M* E7 H9 v; ?6 wask turtles [do-business]
. c9 Y" V% W; n9 O# o$ ^% ~
end+ M/ D& O7 I. C" [- t- h) O( A

; E/ _0 P$ R/ _. ato do-business # q2 x' F+ c+ w

0 x+ q2 R3 x: v4 u9 N! m2 I) j
3 Q3 N3 i$ r$ ~6 x1 ]& P1 F- Yrt random 360
) R+ R4 n* b8 N+ m

# C/ E1 T9 [% y4 g0 ^6 ~fd 1

  V+ l5 n6 c" C0 `2 \8 C0 g6 s: e/ @% q! B; _
ifelse(other turtles-here != nobody)[
# |: E  @% M) h4 S
2 X9 u$ g- N& G# n% {
set customer one-of other turtles-here
' @  J- |( q; Q3 b& B+ K) R
8 ^) c/ q  i5 E. Q
;; set [customer] of customer myself

' u0 V' n4 g1 ?% f( D6 y* f' w
6 s1 ?$ v, s3 G4 Uset [trade-record-one] of self item (([who] of customer) - 1)
' Y% N/ I/ v1 l% G9 R+ Y+ q* G& X[trade-record-all]of self) G$ ~7 L  c) X* ~$ U) l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- f& G# B- P) M. _3 w$ N
3 w. s* e: a1 D
set [trade-record-one] of customer item (([who] of self) - 1)
1 E5 l: b4 ^; Z, j) V5 E( u[trade-record-all]of customer

; h( W) V4 t% E" V! u' I- s1 F) V5 t: U  l5 w; }/ B! K
set [trade-record-one-len] of self length [trade-record-one] of self

% O8 M1 u" D7 q
( ~3 v+ D# v+ o4 k0 `. C: [set trade-record-current( list (timer) (random money-upper-limit))

7 `! x5 y, c) e4 `) Z3 p
* J0 X& d' E6 U* a( g; fask self [do-trust]
$ k7 p3 @* c( h1 F5 R3 J;;
先求ij的信任度
" j# @, n' S3 G) N  U
7 t( |. R( t9 e8 V$ Fif ([trust-ok] of self). b6 z8 Y* a. ]0 \" S, c: a* f
;;
根据ij的信任度来决定是否与j进行交易[: X& s8 B6 T6 f+ [. Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
" a( |2 b) x8 O" E0 W& b
4 j" E: ?  c2 H6 I+ _[

& V' J4 u, _$ @; d4 j% S0 {% E3 h# J3 F7 C3 {5 }4 h; \! s  W* E
do-trade
& j( M8 E, |5 X* D

4 J8 }: O/ L9 f! y' }8 Kupdate-credibility-ijl

# _& L! N. y% ?( E# _' Y
- Q" s9 R7 D9 w% l$ o2 j  Fupdate-credibility-list, W7 J8 j  p6 D: D. U3 M
' O& H" @6 ?. j5 l
" @/ J# ?+ N; S- X+ c
update-global-reputation-list

; p4 q" D1 j5 D: ]6 H% N: ~& m4 _+ ?- K! v; f3 I
poll-class
* c( e1 j0 }6 |! {& }

. ~) w' S/ {1 w+ S7 p. K% [get-color
7 I1 U) o5 @  T0 ~

; B' ~+ A% b- W  o1 D* r% X]]
0 I0 }) A( v4 h  R; M( l7 I! [' p
* u( A! I/ Z" m& \2 M6 f+ x;;
如果所得的信任度满足条件,则进行交易
0 ?1 G. R+ V: d
/ O# r' y  I; ]* L[

) Y9 H8 j) A0 A/ z: w( T
- G- u, x  h  y! }rt random 360

* b3 z( i5 }* \# D  ]9 c9 `( V+ z) D: T+ y9 [5 ]) r
fd 1
; V& \3 @, d+ C6 h: s1 a

( o4 ]" ^( S# V+ d% B7 e) W]

) K8 K) c9 R3 q5 D; K
: C3 G4 Y, T, _  r; \end
( |7 N4 U5 x$ d0 Y7 m

& n1 C( M" B0 G* dto do-trust 6 i* w9 I& S, N! N0 f
set trust-ok False
! F2 z# s9 V  Q" y! [$ [  b9 c0 [: \4 K
7 g" @& o* G' [0 g5 A
let max-trade-times 09 X( }4 T8 a3 H2 \
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ J' R3 Q6 n# e0 |8 Ilet max-trade-money 02 \7 y, a, \( d; A$ t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# q0 Z9 V; C* 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))
! ]0 }- s' u( W$ b' Y
- e0 C; [0 B$ j% Y9 Q; ]" Y
7 s3 d1 O2 [) L$ o$ e
get-global-proportion
6 B! L" z  m/ Klet trust-value0 ]7 s2 o2 d# z& `$ Z2 _
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)
( @! j8 y8 I' x! ], r( B
if(trust-value > trade-trust-value)7 Z, m0 ^# }3 ^) Y
[set trust-ok true]
7 X$ E/ u* E% v7 Z4 [- Hend
# f+ a  L6 H7 Y( G
0 s/ [1 n- ]$ B$ Gto get-global-proportion4 n5 y! V" W# W6 U
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" ]  K. I3 q6 P* f) Y# O[set global-proportion 0]
4 b# k! ]. ^" a[let i 0
! W4 g3 M' p+ v  l4 A5 I) v$ n9 Ylet sum-money 0" m, D" v" M9 d. E0 u$ ^
while[ i < people]
4 k# g9 F, b* V7 A) ][
, u: r% l$ @, k! Gif( length (item i' K0 k: E6 q  j9 N# }" m
[trade-record-all] of customer) > 3 )

4 b1 U+ ~# I- @9 B[# S" b: T  X7 B9 m
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) V/ R: b- v0 Q* q]
( ?4 [8 U1 D3 u8 h/ V+ []
. Y- A4 F7 F, ?+ L; Vlet j 0
0 L/ `% c8 Z: N4 V- y; `5 Vlet note 0
2 G3 ^9 V9 \3 u) A# ]; X& K4 \while[ j < people]
; c, z& U) }% J8 a" u[
# H/ X5 p0 c9 I) W5 q$ e1 s! Y/ Lif( length (item i) f1 X4 A7 [$ Q) L# f: n/ t
[trade-record-all] of customer) > 3 )
3 R# {6 ?: `' Z6 t4 O# Y
[
0 N& ?% k' V' W7 A+ pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 F# z8 O% W- j% K- @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
1 |- m5 X" }$ ]8 v" C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 H+ ?+ M& z& e) B. i
]8 o+ V# W7 S8 w# \( n
]7 `5 Z+ J$ q1 g( A
set global-proportion note
' m% V0 {  g6 N9 |]
$ S) i' m! W: nend
6 X+ V9 x9 C- U' f: R2 F- Q. S' _
( p3 T, k" r- z, f' o* y0 rto do-trade1 f% k7 x7 T6 W. G. R
;;
这个过程实际上是给双方作出评价的过程& {1 _' V( B1 R, H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 H% H( @7 f; W# z9 H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 |: J  {/ T. s# J3 |! y5 @- dset trade-record-current lput(timer) trade-record-current2 o8 I( z5 H' T  ?) I( x9 }- S# p
;;
评价时间
9 Y, p& v" S( S. task myself [% }9 J+ m. {9 t+ E) m0 S
update-local-reputation
- x" P, M5 c" a: d, j$ hset trade-record-current lput([local-reputation] of myself) trade-record-current
5 [0 O9 k6 i& t6 ~; Y]
" t7 c& O3 o. mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ s/ j# }9 k5 g7 g! ]; g;;
将此次交易的记录加入到trade-record-one8 w3 a6 Y& |+ I6 j  @* p- _
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 e4 R6 \+ I$ tlet note (item 2 trade-record-current )
2 b% a. g' e% s  d, N0 k6 n. S- p. _: ^set trade-record-current
" a% C) ?; _5 v3 ]" u- o(replace-item 2 trade-record-current (item 3 trade-record-current))
/ i% c+ l. m* M# ?
set trade-record-current
1 w" f4 V9 s( m* E(replace-item 3 trade-record-current note)
, g, i! Q  ?. H
$ b# F7 n/ {- u1 e" H. o

& w, @  U' M' Y0 v, Wask customer [! r6 ]9 O5 h; m" W
update-local-reputation
! |# r3 l6 {% m2 s0 Z% mset trade-record-current# f5 q1 F5 \0 C
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ X2 B' [1 D- B" D]# j6 j$ K# T0 \( K
9 L+ H# @. [( b  M  A8 v
4 P: X" |9 o& p) B8 T
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. ^: n9 w: @0 d6 b& I3 @
; L9 x: L* u6 Q9 G- ]4 [5 C/ {
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 w3 M0 ]' m" a
;;
将此次交易的记录加入到customertrade-record-all' K$ k0 I4 a9 d0 D7 |' o# i, I& Y0 D
end
% Q4 u2 w, G0 h8 o9 q9 n9 M) c' n8 u) N- z7 R' D1 f
to update-local-reputation
3 k6 B+ a/ P7 K, V( ]8 n2 U6 T: gset [trade-record-one-len] of myself length [trade-record-one] of myself4 E; _9 X$ b" N$ y( P; F! @# a9 y

9 X5 U: R/ B+ S& M* m
) @! o( G. U' Z2 o( l- q;;if [trade-record-one-len] of myself > 3

9 R! c5 c6 Z# h) m3 ], a8 G4 S( y- X9 Eupdate-neighbor-total
2 C  g6 R. E* Q# F0 [* o( M;;
更新邻居节点的数目,在此进行
4 H& S& i) J8 V0 v5 blet i 3. F1 I% I( R& v2 U/ T) I5 L4 E
let sum-time 0
% M. o$ G4 r, uwhile[i < [trade-record-one-len] of myself]
6 I9 [+ b/ X# e[7 s5 `5 ^# o( v1 v5 L4 E
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 z/ R. }0 i0 W" b# g/ G$ d
set i0 D5 ~8 \! j- m, X2 T- B
( i + 1)

9 b' v4 m; M1 h4 P) d7 |]; C* ~2 j3 J5 q1 i7 u9 v! Y
let j 3
& ^% E, [" ?5 R4 t7 N/ dlet sum-money 0
( `4 a$ s' ]. \" wwhile[j < [trade-record-one-len] of myself]5 P& {$ F% B% }& \6 _+ O
[
. v' p' x) @, \8 y9 n1 dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)) l0 ~& N* ^# F( G: o
set j) B" l; \# C- S8 r* Y( N& b
( j + 1)
! J3 H7 Y0 O% q- X3 d, Y; W
]' Q+ J8 c/ a  K+ J6 \
let k 3
' o1 K1 \# ^& slet power 0* s: {+ X0 e% v. Z; P, R! u
let local 0
# X8 q# ~' U  q$ `, \* t4 L- f1 kwhile [k <[trade-record-one-len] of myself]" J4 c5 H7 W0 e; r
[
* W: d3 `: c2 Y) j1 _- _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) , D1 c! b7 m7 w4 a
set k (k + 1)5 z7 ~$ m/ N( r& e8 C. k6 T
]
; r3 k  S3 D  K6 I. gset [local-reputation] of myself (local)- X. }" S8 a: O; i/ e& P/ L& L, E
end; ^* z; L! f* Q. p$ t+ z5 s
9 t, e' c" Q. I5 K7 K5 l- J
to update-neighbor-total
$ _) {4 X2 y. {8 L* g9 J/ p
$ r$ X# i1 }2 K( dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- S, Q9 U8 M% h! U  k+ [6 T6 T7 S% z  l4 {! I. h, ]. s
2 o- U' A* v5 Y8 a5 I
end
3 g& _, M7 \2 n4 H! |- L
. A/ A4 I8 z( y% U4 qto update-credibility-ijl / }4 c3 K' P, _, j7 m0 v
% V9 h, }  B3 `; |
;;
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。
: K  q+ e  }2 i. j6 Hlet l 0
9 j# _% U; q1 Y5 i* {! a" awhile[ l < people ]7 D8 }1 w: u, d, [) Z) s
;;
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# W4 N, P3 o4 l" X* Z( F* V5 O6 H: ?
[/ E% I# T7 d4 \* b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ {; g7 F" A' j1 D, ]$ O6 p
if (trade-record-one-j-l-len > 3)
: C% `5 ]5 W; f8 g[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* |" r" V1 e3 v+ c$ K
let i 3
* p; w& x+ V9 g$ R  \let sum-time 0( G2 [* I0 t7 T; U
while[i < trade-record-one-len]8 v  J" B% M8 s
[' X# ~6 _7 v: \3 v
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 i7 P1 X7 N% g% m& R3 q* `- O! T' oset i
3 i( Z  g; W" p9 ?) x! g( i + 1)

, N  M) k9 f+ X8 D6 R# z2 O]
2 ^# b: f1 B* H$ ~: B" S" M! a# |5 Nlet credibility-i-j-l 0
: a& [  M9 d* y% u/ m( }2 A;;i
评价(jjl的评价)) i* @+ e: o3 j, @6 L
let j 3
) F" O7 E: N$ c0 o7 X5 r: qlet k 4
; U5 D' l( ~, V: a0 \- nwhile[j < trade-record-one-len]% i, V/ U5 I- J& E6 X1 v
[
+ {; w/ d1 {# s+ n; A* w+ ^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
. U7 y+ D6 |* Uset 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)
& O- m; e) b1 e. F2 yset j
. `4 M2 _/ Z* h, ?3 I( j + 1)
1 Q, K- ]6 E7 ?. q# A
]( V3 _/ r' G* 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 ))
. N- E; i$ q4 R4 s" k3 E
4 G$ `  J  b/ u$ O& T1 N
. ^2 D  E! X; v/ r" b4 `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; ?& o8 i, e1 Q5 I. N( E;;
及时更新il的评价质量的评价% j9 d" A& L+ x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* j7 s; o$ `2 t! f2 r2 ]set l (l + 1)2 Y" |1 J$ P: A) h2 Z
]
9 C9 X, c) p8 `/ S4 i4 D5 P: ]end
/ P% f7 p1 z' ?$ w) l) b
6 ^9 C" `( P7 V) x; y3 eto update-credibility-list% _. ?, n' W0 F/ c5 m) m& X
let i 04 w% I# T& a& @. X0 H+ [7 ?/ [
while[i < people]
8 s$ R# a# M8 A- I- O2 g# w' x# e[* G) w, O3 T% `+ `$ y% U
let j 0
: @! Q/ ^/ ]6 Elet note 0
8 B$ i8 ^9 B# u* W4 _, tlet k 0
8 j/ e+ z  O8 t- y. z;;
计作出过评价的邻居节点的数目  W3 |2 i- F6 X5 V" Y( w
while[j < people]5 {+ K' p* w0 H+ B, O) ]0 \
[
' X7 {( y# n9 A2 rif (item j( [credibility] of turtle (i + 1)) != -1)
1 p  K" k: Q! R;;
判断是否给本turtle的评价质量做出过评价的节点5 X* r3 O. m* y- p2 ~/ @6 x
[set note (note + item j ([credibility]of turtle (i + 1)))
0 q; z$ M% A/ {% P5 c2 P;;*(exp (-(people - 2)))/(people - 2))]

( d# m3 V2 \) x) Eset k (k + 1)
; @1 v/ H- M( y8 x5 x- U- b& q]6 ^: f( \% z) X; ]
set j (j + 1)
# N% E( V; n7 |: N3 A]; o5 F1 r# I# X: G! _
set note (note *(exp (- (1 / k)))/ k)
( `, k) q3 ~+ ]) ^set credibility-list (replace-item i credibility-list note)
( \9 T; V" Y  m+ }. gset i (i + 1)) U  n$ d0 |* M4 u
]; r9 \% f; R% \: d  z2 L, U% f; j# }. q
end- i8 S% W; ~2 r- l0 E" S; e7 [/ c

+ c1 c$ o( l' m  S6 pto update-global-reputation-list
' n1 {( f0 g/ blet j 0
$ u  o, d8 s' B& E3 n" Mwhile[j < people]& |  f& g  Z# X2 O6 P0 v6 |
[/ [- i5 i! G. R  x
let new 0
6 w/ l6 C+ h6 W7 k7 ?3 B' f;;
暂存新的一个全局声誉
) O9 H+ x' f7 N- q. m, O; j1 ?1 Dlet i 06 H! M& Q6 @5 t: X7 ~
let sum-money 0+ x4 `8 y0 z1 l* `- q
let credibility-money 05 i& y- U7 U: Y% [0 j6 _
while [i < people]9 I0 L- u' v: O% Q+ q! V" X
[% L) _2 l1 z: f5 J9 X3 Y, z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ j* c" ?' A. d% tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* n/ @# }- e4 H1 xset i (i + 1)! K, A/ w9 N( {
]) l. H# \1 K# e5 I" p; z
let k 0
: O' t1 s6 E- Y0 Y% W+ Z7 M; @let new1 06 `. I& b+ h; G& j$ D1 c6 M
while [k < people]2 \8 q9 Z* H5 u: \5 B
[; ^" P$ d. L* g8 \9 f6 f
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)" z% V4 I& {# _9 i9 Z' o% i; b: w1 c
set k (k + 1)
+ p- M! j9 a1 l: h3 _# G- g& r]' `) ^, O/ K8 J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 u6 \( C/ p5 H8 u' mset global-reputation-list (replace-item j global-reputation-list new)0 B9 t( Y. u4 W; g3 W2 B
set j (j + 1)
. Q1 i: T2 e# P]# X* e+ \7 X! `2 E' i/ n& G
end
5 {; R2 ~3 v& u! k  g' i- Q. X" c; H2 R
; H  {0 M8 n0 ^4 H; V* O4 |

3 M. l1 E1 U. E- j& @3 K4 N  Vto get-color
3 v& T, G2 m( D+ H! n& ~
& A8 @1 u2 c: q7 }! Y5 L! _set color blue
) H" S$ j$ a0 y3 M  o, V3 w
end
( x9 I1 l! d* G' O5 G$ U9 ~) {, Z4 q4 S
to poll-class8 ~5 E9 M! {7 _# O' v( Y2 h, N
end
% {6 y3 t3 V9 A6 c% O1 y+ U. d& O
2 K, n4 ]0 Z) E4 z% M  uto setup-plot1
! e2 a2 N* A! N% n5 e
8 j( L0 u+ a- w: eset-current-plot "Trends-of-Local-reputation"

! I: r* ^' `+ H9 O. T! A1 `
/ j" o' j0 _0 O4 k$ ^# ^set-plot-x-range 0 xmax

4 C  X1 g& M& y6 i' p, A3 Y1 y; P; B
! k# d9 k  b( e7 g. Tset-plot-y-range 0.0 ymax
7 l9 |3 d4 e5 s) s. z4 w  N
end6 y9 [1 {: Z1 N+ E

' n; R3 O) W* r6 Cto setup-plot2
+ `9 ]6 z7 E# e* U( a" H) p( k
- q$ C" Z* r. s! t: p/ D" yset-current-plot "Trends-of-global-reputation"

$ j- R1 D6 F  p' V5 @! V9 C1 i0 v) [9 T: q* i& @9 A! n
set-plot-x-range 0 xmax

8 m9 W0 C8 v* I$ P0 _6 R, L
; G( m( `" P) o& a8 d3 _6 \set-plot-y-range 0.0 ymax

& j/ d  z& i& n4 G1 e- Uend
4 z( ~' `+ _7 X0 N4 J- b& I6 q. w  y" j
to setup-plot3
6 S$ Y' t! Q: A, K4 S4 j. g$ p2 ~
$ X6 T4 A' d' d" Z6 B: P0 H4 ]# P/ lset-current-plot "Trends-of-credibility"

! [+ j2 P2 s, c$ r( P3 a: H* G$ M& b; T5 r5 S8 w0 E6 h0 ~7 c" f
set-plot-x-range 0 xmax
/ @# j8 a4 Q5 R) }% W
& _+ |/ t/ m* M2 v, G& x
set-plot-y-range 0.0 ymax
4 K- Z4 h  X9 X$ d# X! Q  C6 ~# C
end  u4 O9 I) q. _4 F; F
9 M3 l/ S! ]- y$ r, A
to do-plots
5 K1 S) a, W) v: D7 k  l0 C) `set-current-plot "Trends-of-Local-reputation"
: g# P! Q! V. tset-current-plot-pen "Honest service"
+ z/ k/ c2 A" m6 o: t1 Dend6 W5 ?. L& V9 `  |* v2 R( i

3 D3 X/ r; n, j% y, `, O4 n* L[ 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.  N: F4 p* G4 Z  w: E

& d% ~% u  ?) z; E! N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, 2025-11-20 22:13 , Processed in 0.020266 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