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: 18367|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:! K0 G0 P2 t( B9 \0 x1 S1 ]6 K
to do-business
6 x! Y" X# @. E8 o6 n" ?) z rt random 360; r9 s5 `7 t+ |5 x
fd 15 k' J  A1 R6 k: Y) A- S) }
ifelse(other turtles-here != nobody)[
+ U: C  V3 G. v, ~3 p   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.) c/ i& i; C# M/ o* s
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 y) E# c3 Z( {7 |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# d7 k' ?  m& d! Z3 m6 @   set [trade-record-one-len] of self length [trade-record-one] of self
  d9 K- q% x! V# n   set trade-record-current( list (timer) (random money-upper-limit))
' U* \# V- M- v3 s4 ]  l! ]; O% j' I/ N
问题的提示如下:  d6 R7 Q; o0 r6 z- _# R% u

6 O0 ?! K: C  eerror while turtle 50 running OF in procedure DO-BUSINESS
7 E$ h1 u/ ]! d  called by procedure GO
7 s/ n6 T" X  T5 s6 HOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 ~+ v5 f' X5 C* y; V/ x% ^9 [9 K; t
(halted running of go)
0 J9 w, b8 w3 Y, c" i
5 x: K' R8 d1 v* P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~~
$ l# k0 J2 b; i7 N1 q9 m( F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! k2 ~: P& |  G8 M: y
globals[
8 j# y3 j8 d& W; K3 Vxmax
7 q3 B/ r; T( ?" Y9 }+ q  w- ^6 Yymax0 C# [; N+ \4 {' [' F
global-reputation-list+ t& X9 A. q9 E3 L$ k2 g  d

' l9 S! ^& V) j; g$ M+ V# v0 c# D% \;;
每一个turtle的全局声誉都存在此LIST) P) P7 e7 p4 I  }: u
credibility-list# `& h+ [5 X7 S" V
;;
每一个turtle的评价可信度1 W: D  B" K- W+ [- `) a; I
honest-service
, x- _- t: l( x$ n2 O5 y  [unhonest-service
0 F# O2 j1 |" Roscillation% L. ]+ G$ p  {
rand-dynamic
4 R  L. n$ x+ U! O$ U]
% b! b6 k/ a: d1 ~0 V3 s9 X  t5 M5 T5 S5 F
turtles-own[
9 `. Z7 n# H8 a) J! F. wtrade-record-all5 W: n  m/ f  o/ H/ P: H
;;a list of lists,
trade-record-one组成
& Y' s5 d- G0 e6 |: v  ytrade-record-one- a$ o3 [% L9 M8 N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* w* c9 x; \8 Y" {' f& ~2 O( ^

! t- l# Q1 @" n+ ^;;[
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]]
! x$ @4 V' ^5 `$ Z/ C$ r0 |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]
7 `4 a7 U+ m7 r. T& F8 i9 X# q  Ecredibility-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' a6 F' H7 t5 T9 y( N8 V  j( S
neighbor-total
% [- f# S2 |  ~8 [- y0 B- o;;
记录该turtle的邻居节点的数目
! i- ~9 X5 r# i+ @( r7 D( `trade-time
* z9 M% w3 E0 E; x" |* s; H, S;;
当前发生交易的turtle的交易时间: |9 D: C2 |! u6 j
appraise-give1 T  U! F7 \8 G1 s7 v% Q
;;
当前发生交易时给出的评价
2 G  V- T' s- W& l; T8 }6 ?appraise-receive
0 K% p4 K' p  x* V- P( E;;
当前发生交易时收到的评价9 C/ O9 a; s" d9 I* f5 f& \
appraise-time  m6 o, V$ m# Q* B. ~% O6 [
;;
当前发生交易时的评价时间; x! Y1 N4 V0 ?) ~
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
+ `% E9 q( V3 d" ctrade-times-total" |6 [2 I4 R; H. J- i
;;
与当前turtle的交易总次数
$ N: Z3 Q' o1 Z) S4 S  ~3 }* X9 ktrade-money-total
; b. I. F# c+ X" L; X" n;;
与当前turtle的交易总金额
# U- ]! C. U( l( z+ v- ~local-reputation
# m8 n2 J2 n& Y+ A" y/ jglobal-reputation) I6 l6 l) y% q/ V  J( s7 u
credibility
5 g7 Q, U# X) u$ J0 I& G; h;;
评价可信度,每次交易后都需要更新8 |3 n( S9 x+ o2 e( m; b. l/ y* ~
credibility-all7 m  H( M/ U5 r  k# S- q
;;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+ }$ [) s- K4 c
4 m$ ?3 q5 g  J1 }3 m; n, 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0.52 C. C' A$ D1 ^& q
credibility-one; Z1 q/ @) q8 K# H( C# i. q  @9 H
;;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
# ]4 q* I9 H( `# y; Tglobal-proportion
/ i4 h' P2 ^3 I% x$ K3 y; Vcustomer
7 N, x  _; f0 `, Q" [customer-no$ @, {9 ]! M$ Y5 z
trust-ok
  l! _% ?9 `  }trade-record-one-len;;trade-record-one的长度
5 T" o! X& n2 M, ]9 G  @]& c9 C3 H. f# q$ ]: N7 D. z9 t) R

. f( |  n* y& `4 ]1 I" e;;setup procedure
: K3 p5 c# ~2 i& Q
8 A- i$ ]0 R1 `; z' v; V. ito setup
# S- J. T4 t7 Y+ K1 ^3 U  E( r  e- {, B3 r% f2 e4 q
ca
! i/ K! O7 ?/ A6 e; ^) u

$ x& |/ n2 r, {initialize-settings

* C' C: }0 T2 f# N6 u- O7 C% U1 R. ~) c1 Y8 A* i0 q
crt people [setup-turtles]

; X0 q% b; y6 y3 h8 _0 l9 O; z
5 V" ^/ h7 l! y$ D) dreset-timer
4 T" S" o9 [: G1 Y$ z% w! c2 [: w
9 B! u3 X- ]/ t3 Q3 ~% Z
poll-class
! Y8 z1 B1 U2 N) B( ?

" l1 [; B- X: _+ B! }6 rsetup-plots
$ @3 g: h# y* O: ~# M) G

; S# x& s2 Y! M" Edo-plots

- B) y6 _6 L5 f- K# ~3 _5 y: cend
+ M0 D5 g7 X3 c& G) @3 N( }8 q$ b4 e/ r- r) l% M' t
to initialize-settings
: M& T- u4 y' k# b: S& H/ H* p  J' ^1 G# G' w9 R; k( g
set global-reputation-list []
. I: D2 [% u3 I5 w2 v5 z
' ]$ k9 x8 ^7 X& O& ^2 [5 ]6 b
set credibility-list n-values people [0.5]
( y0 o: B5 f1 T. O2 \: l
% k. e( ^. A$ N6 Q% v/ N
set honest-service 0

& C) Z2 U2 N2 o. R! Z
# q. b3 m* Y) p& a4 {set unhonest-service 0
( O& e2 p3 S; H% _/ S

  `1 E& a2 j  v) O& W$ @set oscillation 0

1 i# m6 c9 ]  x) @
1 i9 {1 G0 \1 f/ B, E0 u- v" yset rand-dynamic 0
6 [- w2 w8 Q2 |# Y: r# d* y  k
end/ {# X8 H5 s& N: g
4 s" h7 w; x7 h6 `
to setup-turtles $ X, p, J, Q! g5 a" M6 x
set shape "person"* B% R5 ~: Y7 u" M0 R% f
setxy random-xcor random-ycor" j# U) W1 E* i' [" O% x: b6 Q
set trade-record-one []' J$ k/ ]( M# a1 b
; j5 \# Z8 ?& j8 t* l4 Z' J6 G" a- O
set trade-record-all n-values people [(list (? + 1) 0 0)] ; I5 f3 h: f6 q$ E  @" Z: r
4 e# J2 L5 G8 }; g
set trade-record-current []
& g" m5 s- D5 |7 w' [set credibility-receive []
' U0 D% M4 B6 k& o6 E/ t8 Z! o. y9 wset local-reputation 0.5: \, j4 H( I& o2 L; O$ l
set neighbor-total 04 r. o/ }+ j# t$ i8 S
set trade-times-total 0$ n/ t( ]8 J: a9 U: \1 s, F8 m
set trade-money-total 0, i. Q$ u+ [5 E% `# t
set customer nobody" k3 E/ }; x7 ^1 q& Z' U8 t) U
set credibility-all n-values people [creat-credibility]0 [" o7 j% U) X& C9 v
set credibility n-values people [-1]
! R9 ^) @0 [3 b7 j# d0 ^( ]5 q) Mget-color
3 o+ O; l! O1 l7 z. Y
& F0 D) c) _9 o8 S* ~+ G
end
- S$ m% o% [& g4 J
9 S3 X7 U9 D/ \% x) o5 Wto-report creat-credibility1 [2 L# A. W4 R5 J4 J! F
report n-values people [0.5]
/ `) ^1 w  |" c4 p+ E0 S6 }end
5 d8 K9 ]- K- A# K) h6 L" R7 y0 A  J6 b$ {" Q( t
to setup-plots: _& v# f6 {. ]& p2 E( ?1 e
( y, o' i8 [2 H" ^1 O; B2 ^
set xmax 30

& ~) U2 U4 C# L  f, p" p3 [* Z+ l8 `/ O$ B
set ymax 1.0
3 G: z- Y! Y& x+ N7 R

  x" [* L' g8 m5 L! Z; {clear-all-plots
5 t9 U( a# ]: z4 g* ?
% k7 ]2 w, V4 n( @* E* C+ D' @: Z
setup-plot1
( d' O4 W3 T4 h- g& ]; x3 P' T; O

& J/ G7 o" C) D5 m( z3 f- Nsetup-plot2
( e& }# X% E. d* p9 }& V; w: E6 B8 }# v
$ t1 B2 p& x# k2 L7 p9 z2 b. a
setup-plot3
- t5 O' B7 _% {: k" ~, y. |' S- u/ O$ d
end- J# o9 O/ G5 ]8 @$ N5 _- A- N
2 k* ]$ `0 Q5 e* k) r/ E  L6 [! K
;;run time procedures
5 \: x# r# I* o' }: C9 ^7 Q  k$ ]8 [9 o, W- x
to go
6 Z4 X! L4 c; l( w/ y
# G$ |3 T: y8 [# eask turtles [do-business]

: R  m6 R. ]7 [6 ]( L. F% Fend
* L8 V0 {/ A' L. V6 b& g' d0 O+ q3 c, X# [+ C* K+ d+ w$ B
to do-business
5 {2 n% ~8 a8 p' p; n# u

0 ]( {: h5 R8 b4 X
: F3 f1 K3 Y: t! m, xrt random 360
  J5 i  n7 G* T9 H

: ]4 H, \! d5 tfd 1

! k; L  c2 U* \8 u5 C) }  Y
3 }/ J7 ?2 ^+ J% i5 `. t8 ^ifelse(other turtles-here != nobody)[
9 U+ C' g" T/ i5 u/ P) d9 H/ N# C8 b

" {& c# j: J& I+ O% [/ Q) {set customer one-of other turtles-here
+ a' R4 U% |: v- {7 S

6 t) u2 F/ s) j+ r+ O$ f1 t/ ^;; set [customer] of customer myself

3 p+ ?5 P( i% ?5 H( N% K, m6 \. k6 _  q
set [trade-record-one] of self item (([who] of customer) - 1)! J. c8 b9 K  x# l6 r! \
[trade-record-all]of self
' `$ W5 b- c5 K* d5 L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 T+ k% N% U" u8 W
% `8 R8 p2 i1 h7 kset [trade-record-one] of customer item (([who] of self) - 1)
3 t' C# Y. X2 e$ V[trade-record-all]of customer
5 x% h9 K8 C+ }  [

. H5 r! e0 G9 a3 T, Kset [trade-record-one-len] of self length [trade-record-one] of self

6 L) T1 x' o5 [  g2 e! t9 |
% K' o9 D9 w3 Aset trade-record-current( list (timer) (random money-upper-limit))

* y- h- F5 m7 p6 Z7 x! Q! j- y, m" P8 U5 C# I. A: E8 |5 o! E6 F
ask self [do-trust]
/ c, Q/ ?, d$ t0 _. u; D;;
先求ij的信任度3 t5 t" y' S1 C  V: {* J" l
. m0 Z% d5 f: o9 b1 n1 u+ _5 N
if ([trust-ok] of self)
8 `9 d* i2 C/ b) R;;
根据ij的信任度来决定是否与j进行交易[
3 T- e, [0 @' h' q& B  Z) ?5 s. ?ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( Q3 Q( Y, Z* L% ~6 \0 @2 k% ^
( |$ T  G* h+ l# X; E# ^. |[

( [' O+ k, E! _# B6 `  S4 ]  {7 l" t0 b) ?
do-trade
3 q: w8 a- @' e' a8 C  c6 v
+ G; b7 D/ r7 ?5 g- t6 z8 \% N
update-credibility-ijl
/ v) x( i& i9 _8 z& J
7 s8 r0 T* Q7 d2 C* D& ?
update-credibility-list
7 l! h+ H5 ?; V2 L

3 A$ G2 f0 c' H; z4 }" J7 C( D) @! }& |) |2 v
update-global-reputation-list

3 L2 C5 x( \+ Y: p6 ~% V# \" @# C. C
% q" r" n9 M" q: w% ?poll-class
, B0 G# D& E1 ], g4 D

: D; ?; v/ h# l4 nget-color

, u, b# ?! ?+ O- |/ f4 @  q2 F3 d
]]
- [; u" z  f- B  x" c4 `( e& T! X  e2 y) j
;;
如果所得的信任度满足条件,则进行交易7 h( I; b1 ?$ I" B7 c

0 S3 F: N5 x- f$ }[

) f8 n9 c! M4 p) s0 Q% B: `4 G' m3 r- A: l9 e
rt random 360

. O2 C1 K) c8 y  ^, C, k& x1 B
5 G4 t0 T: P. E3 A6 Ufd 1
0 s9 z3 b( H8 T: [+ p# u" e( G

5 i/ g! S9 v! w: E/ w, ]% x" M]
: s0 ]# B6 f2 m

7 G6 x* F0 X  W0 ]end

9 I+ F# [! U- J8 f7 @( s7 S% u6 ]  `; \
  s& z/ U7 [0 O; B" mto do-trust 3 c  R4 A! f  m2 B  P
set trust-ok False
) u1 Y" r- z( T1 d( o4 a$ G+ j5 D5 t: _% ]" _( d

8 _' Y! L* {9 E) F, p1 Z; klet max-trade-times 0* M, Y' I; A) [- X5 V# R; V
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 ?6 Z7 N4 \: C7 _3 C& p) xlet max-trade-money 0. A2 N. ~4 N8 e" @9 p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 [, r  p' f; }1 ?! B6 P
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* l, w+ Z/ U; N

: X7 L1 C( d2 {6 J$ [, v
$ x$ P. q* Q, h' \5 n- l* v
get-global-proportion; A$ |. Z1 x4 O( H
let trust-value$ |. k4 o" c- F0 [- N: e7 E
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)
2 X: X* Y  X, w9 O4 d* G. K3 t7 h0 D
if(trust-value > trade-trust-value)# }' K+ G) N) K% x
[set trust-ok true]
7 ^& v5 ?0 ^: \' f. e( d: xend
# h7 h* i+ V2 }- W" ^4 a' Q, c1 q
* k5 a/ o8 h2 ^+ U  N$ F6 Pto get-global-proportion
3 U5 W- D" \7 ]! C+ P. {9 t% sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  j( D3 c- ^0 K" w& p( v6 f
[set global-proportion 0]
; c5 {+ M3 Y6 O2 w  `[let i 0; L# M# A' D( j8 A
let sum-money 0
3 G% j/ g$ L! @5 @6 Y* Vwhile[ i < people]3 p  D; z3 r" e9 i& m. X1 H
[
/ {) g; w" Y0 c1 Q2 C2 b+ aif( length (item i
; F0 K# n: X4 ~- a6 T5 v; v[trade-record-all] of customer) > 3 )

: t$ H1 o) ]9 }5 w[9 w6 i: K8 S4 t  H& x3 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) z0 J; e+ {/ J+ h# N]
) @0 g' I7 E/ O]
8 @4 a( n0 u3 l6 P! s2 c7 E, Ilet j 0/ V" R! Q3 }1 }1 J
let note 0# \* ?# n; r3 L( J6 Z5 M* J- z
while[ j < people]  J& r3 s' D' o1 h
[
+ a$ \6 N; D+ gif( length (item i
3 c7 r1 [& g4 O& y' L[trade-record-all] of customer) > 3 )
7 L9 _: U1 n: s& h  |4 D) h
[
9 J0 o7 S8 n! w4 Q. m' }$ A  Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' V& o' E9 M& C( G, G' [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! m" N. z8 `( e4 G  E8 H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 q$ R3 o: Z/ A; Q" G/ ?* \5 y
]* o3 R  Y. y4 J* k; n: I! l
]- r& V& U# D) p
set global-proportion note3 ~; c  r! b$ r4 C
]
3 h9 \5 R8 f) |, g4 nend0 z. p1 a- B1 |9 K8 L3 G  B% l9 A

- P- ~* D/ G* k5 \: qto do-trade) y- y* O1 V: g( \3 z" I
;;
这个过程实际上是给双方作出评价的过程
; ]1 c) O: v8 U% Z. s# j9 {$ bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. X' B! j, W# O* i/ x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  \  H1 p/ b8 [8 W, V# w" K( dset trade-record-current lput(timer) trade-record-current
. X% |# `9 _4 _$ f;;
评价时间5 T+ T' Q1 i; F$ b/ |& P+ t/ q5 A
ask myself [
+ h( q# w) M  k1 D3 Z# eupdate-local-reputation
* t# {% g6 H% R9 _5 bset trade-record-current lput([local-reputation] of myself) trade-record-current
: _( R5 t9 Q$ V) Q, T+ U* W- C- f. i7 F: F]
8 ~8 L' B  M, E% Y1 |set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) j) E. q, w& i# R" n! I
;;
将此次交易的记录加入到trade-record-one
0 ^/ M: }% h  ^1 Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 n8 d6 I0 l, @7 Wlet note (item 2 trade-record-current )( h4 {$ ^' n  A. b' U
set trade-record-current3 [8 e8 `7 h1 Y) C, t4 [' I' w! {  B8 E( z
(replace-item 2 trade-record-current (item 3 trade-record-current))

8 A' t' J4 }* H6 ^set trade-record-current
+ v1 G. @3 s9 ?# t(replace-item 3 trade-record-current note): b& F( K# C: ~5 u, y
7 B/ w+ o' X  s1 C. \) l
& r! c) Q. P6 ^8 H0 a
ask customer [
1 t  r( c- a! S  Z( n0 \7 nupdate-local-reputation
* Y0 p) k+ z2 _5 r5 yset trade-record-current- W9 D- D; P# x7 x  X4 Q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! a0 r1 G9 \+ w7 @. K/ r" E
]
% a, [! z, E/ V$ ?
2 A5 [. I8 J& t" c& J% ]* ~
" B/ x$ ?/ G' D
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  N/ @% }* s9 f
( L% ~7 v1 B- w. r0 ^+ E) w7 `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' u$ i! v; g0 Y* a& W* D
;;
将此次交易的记录加入到customertrade-record-all. N" }+ S5 A- e2 v
end; z& s% W/ w. m' C: T* E

0 q  C: \" u3 ]6 A4 Q* jto update-local-reputation
$ P- A6 o- ?# T7 U% _# S' ~/ b$ |. r. _set [trade-record-one-len] of myself length [trade-record-one] of myself
% X. f% G$ ^8 x' r4 d( y5 z, J) S+ |' ]1 |$ B, B. {5 [' \% A4 V
* n! f% ]& A2 w5 u
;;if [trade-record-one-len] of myself > 3

+ z6 p2 p% Q$ ?+ M2 {$ Uupdate-neighbor-total
) q0 ^5 X$ S$ i3 H3 [/ [2 v;;
更新邻居节点的数目,在此进行
2 X) S1 A4 y- z* P5 Glet i 3. y/ g$ M4 [4 _  c' F" T" r
let sum-time 0
4 Q# k/ R( I1 A; R! n- awhile[i < [trade-record-one-len] of myself]
# U5 c+ u8 C- q2 l- J( l# _[
" V9 E, w& j5 U0 mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. q  K$ g$ v  @4 @( L! I4 n: ^set i
) ^' X( a$ y3 g( i + 1)
9 g; B5 o$ Z" G! B
]. m6 |* I' y, E  N: ~
let j 3; {" @2 W% w% \. b: F4 R
let sum-money 0
& X  x2 E5 M) R3 Owhile[j < [trade-record-one-len] of myself]4 ?9 ]  C+ m. N. X) `) ~
[2 V9 s6 Q( p% [
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)
3 Q$ O8 K6 o  g8 `6 s8 U4 F3 dset j9 X0 Y+ {7 J3 W- v3 {8 {
( j + 1)
$ s2 S* |: S* h, E$ q, ]
]+ G( @" d* f) f/ b7 Q1 [
let k 3" w) a+ H; T3 f0 a( ^* |
let power 06 R! J  }, h- T6 P8 R- ?7 h
let local 0
3 f8 `" W$ m( B8 r" |while [k <[trade-record-one-len] of myself]; l: D' F) Z9 n  @, o
[- M9 `. W5 c1 U* S
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) ' P  j- w4 u; U* X
set k (k + 1)
. I, C" \" ]1 J: n) X' i]
8 C! e, B5 m7 r8 T5 M  L' B7 rset [local-reputation] of myself (local)1 M! `) i; X+ t5 O
end2 Z) t" Y6 b# h$ I9 R! x, J

/ w. f1 J+ q( @% c) h) {' Mto update-neighbor-total
0 {8 t+ h5 [0 E: C2 I. r" }4 r; z0 y6 H  a& N- t  }
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 V4 T3 x+ a4 G( u& t+ {& B2 H! V' D2 k$ [

- X3 H, W1 i- E1 n# c1 Eend5 G6 Y. f3 _8 k) v% U+ h& x, S
5 [! P, ?/ @0 H8 y) [
to update-credibility-ijl
1 `. t; D2 V4 e, Y1 [# u" c! x2 O" k+ y: V
;;
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。
3 ~8 G( ]6 h" n% [; S2 Blet l 0* j9 {  s1 z3 E7 c
while[ l < people ]
3 z/ L5 h  G5 C7 |5 B;;
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
3 C- `4 R) q+ @9 i4 }# U. D[# U- U5 T. I: K- `% V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" A! ?' K6 B! `if (trade-record-one-j-l-len > 3); x" T; i4 w, `! r7 S5 ?
[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-one5 y) Q. W$ `; a& T
let i 3$ t1 C+ z( s$ a
let sum-time 05 j! [- b7 B: e% `9 y
while[i < trade-record-one-len]
2 _& d8 \, q% g2 Z. D% t5 R8 i[
( t7 c$ u1 \; F* B$ h0 gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# u4 y& z. Q6 N1 s- h0 rset i9 o9 o9 d/ \8 }% g/ C; r
( i + 1)
9 r1 n8 G' c0 C# \5 A! S: B- h2 Y
]  S3 H" X* U* X2 Y% k
let credibility-i-j-l 0
% R  B4 G% T* F  ^. i6 S5 d;;i
评价(jjl的评价)
; O6 d% I8 @0 ^' `: W. klet j 3) a7 P" P8 B) T* {0 {" ~. q0 w
let k 4: A+ N8 ^; q5 h9 F
while[j < trade-record-one-len]
0 X! Q/ s& J. E7 a% t( `. t' f[
- d5 T6 P" k% C8 }$ D& e2 dwhile [((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2 s) j, ]; {( k* U, {' E8 t: Y
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)0 Q5 H: t! F( I6 X: M* z$ a$ p
set j" J, L3 ?) u4 S! M
( j + 1)

, \2 ]* K0 A3 ?; |. h* }]$ P7 C, \! u: E5 X
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 ))4 r1 h! u' n# r' l: X2 d4 q4 N
) Y2 y/ G2 k( W. a* j! U& q

, S" @' k+ l- g5 nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& t3 u3 ]  t- G' I;;
及时更新il的评价质量的评价" P7 q( O1 g- b! T* N2 c6 R: h) i) Y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% D# t' i5 s! r' @
set l (l + 1)/ w: h! c! }7 F( R4 \) l4 V' o
]
( z( A; C% q) L1 N7 [. zend
7 ]& b* g$ p/ {8 g0 E, l# s, W0 B$ W+ f' m
to update-credibility-list
3 H1 S; }& d1 r$ ylet i 0
" g# o: U& }% I# Twhile[i < people]6 a8 r' F1 w5 J8 S
[( |6 v; z) _. O" J% ?
let j 0+ Z7 j/ r/ t- S  b$ @
let note 0
. V% i% U+ ?8 r* Plet k 0% @  a0 T+ H, T8 V9 b
;;
计作出过评价的邻居节点的数目. O( z1 }# X7 u' Q9 p+ Y8 |
while[j < people]
* F" V: T5 w( Y[
5 m* }# q" ]. p( _if (item j( [credibility] of turtle (i + 1)) != -1)7 M( I) c. ]; H/ x) _6 K
;;
判断是否给本turtle的评价质量做出过评价的节点
7 T! O* w! z! b[set note (note + item j ([credibility]of turtle (i + 1)))
7 `2 V/ v+ g+ Z;;*(exp (-(people - 2)))/(people - 2))]
& b0 H/ T0 i4 M
set k (k + 1)1 W. B# m; W# G9 H) c
]
6 V* p/ b2 o5 \set j (j + 1)
3 @  \7 G/ c% w# r]! u5 G- ]2 Q0 \( _: K& o' Q
set note (note *(exp (- (1 / k)))/ k)+ y3 S+ X; o& }- z$ b% X
set credibility-list (replace-item i credibility-list note)
) g$ A9 r9 h1 u. r6 P3 p3 kset i (i + 1)
3 s. T1 O6 W+ l5 z$ H]
/ I" T, o) @8 P, Wend
3 d6 Z: o9 k- i0 W0 ]: k3 o! f3 M$ M3 ^# d& [
to update-global-reputation-list
# N/ `* I4 l7 |  o# }$ b2 H0 zlet j 0
, A6 \# k) I' X: `4 T( @( c* |. Awhile[j < people]4 `7 L* F" d; L* t# d
[
5 N% H9 }4 h6 [3 J) T! f' Olet new 0
2 ~5 H# r) R1 \7 c$ n;;
暂存新的一个全局声誉
/ F4 }9 d9 b7 E4 hlet i 0
: @- a* |; N) u: w2 A9 t  Jlet sum-money 0# k2 e: x9 h% n0 ^8 N1 H% f9 W
let credibility-money 0
- t: d- V- |& u3 O9 P7 `) s* ywhile [i < people]
* V1 r% A/ Q* z! F( O# X[& m6 n. w, @5 P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" x* s) \( M( R; C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ v4 a' o1 I6 ^, z! ]8 E$ K
set i (i + 1)2 I' G0 L: v! J0 }, r+ q
]
8 R1 y' o9 J- }" B2 S; llet k 0
! p2 b3 e% Z/ @+ t% s- B; Wlet new1 07 ]2 z! P6 t0 k/ P% U5 X% e- M
while [k < people]
. a' ]5 T, P; s; _: j[; r0 C/ W2 ~& g4 r
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)
& x9 G0 o! b& R  G$ B  x: z" iset k (k + 1)
$ w) L+ e7 W* \* R0 l/ Q8 J]
; w* P5 e6 X: V" k7 J  Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 B' [- k6 ~& o) }
set global-reputation-list (replace-item j global-reputation-list new)1 n# E) v" Q1 L$ g6 J, M
set j (j + 1)7 |! g9 z/ H7 u0 w/ W1 j6 S
]
& L. }; m1 @2 o5 X. g, q- hend
5 C. l3 B5 Q$ |4 m- C; {6 L7 H- d- @' [7 [) o+ c
  M0 f! }- J) m# R

. ~. o, u; ^/ [; \' Ito get-color' C1 w8 c4 y) d9 \( F
, V( L$ H8 O$ c
set color blue
1 W$ U0 H1 m+ n5 P
end0 F% ^4 w" \0 l" `$ R: N

, j8 _$ W! X+ \, Y4 }to poll-class. f+ Y+ _! A* _7 u0 g& T
end
9 G+ D( m, h: k5 }8 s. a1 C
/ I  O6 y. {. N: w! E% H. ito setup-plot19 v+ H' Y/ [) Q( z

3 j8 }$ E' q  B( a+ ^' m4 b- z; ~set-current-plot "Trends-of-Local-reputation"
- C( ~  K# y; z  J3 C) ?

) V: U( ^8 Y6 Z' _; ~6 E$ F8 F' @set-plot-x-range 0 xmax

+ ^2 [) E4 n) B2 V* U! k
" n. U; P0 x4 S  cset-plot-y-range 0.0 ymax
- e9 `9 N1 b/ w
end
  C! Z% B7 |1 M. w. K8 s
! b5 l1 m# D' k7 U2 I( xto setup-plot2
9 c# K; ~  H) O
7 L( V9 `5 ?$ ^7 b) T7 G0 r( P: K3 @set-current-plot "Trends-of-global-reputation"
& L9 e# O2 z# s0 T. ~0 c
* I8 O+ u6 v9 F9 Z: ~4 e' C
set-plot-x-range 0 xmax

6 F9 _- K5 C/ k& b  W& i2 S5 Q3 l/ n% z
set-plot-y-range 0.0 ymax

. T& D$ ?6 E+ q9 jend
* Z* G. J* g. d# B
3 o! `0 Z# B3 R5 Rto setup-plot3* ?8 e+ h' F* i3 K; h

" l( F7 O0 S, r& a( Tset-current-plot "Trends-of-credibility"

2 ~3 V# ^$ a& Y. {- O. v' n) R  y4 _3 s
set-plot-x-range 0 xmax

  C& a" Q' u3 w+ S* s3 E
) u2 q$ A1 h7 J- \set-plot-y-range 0.0 ymax

$ e' T: C3 A. o2 I6 Vend
3 [  u( i5 J2 J; @+ {! f$ P* `/ j% t8 J; u$ W& b! s/ K: v
to do-plots4 U; z, q8 G) T
set-current-plot "Trends-of-Local-reputation", a4 j& W8 J& h7 ^- e2 [/ v
set-current-plot-pen "Honest service"
6 s& i& N8 j; Uend
& |5 s; z) f& T$ w* o3 h( K  r( `. _# p( m, S( L- W
[ 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.
+ D$ u4 d, m4 ~
! f  h5 z2 ]2 v6 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, 2026-9-11 18:33 , Processed in 0.018082 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