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: 10433|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:
/ g7 j2 p  L5 H. }8 Ato do-business
, ~3 \9 T# l2 c4 d3 n! d' p! ~. c rt random 360
/ F/ \1 ~* {3 u$ ?2 N9 v$ T fd 1
. x) T. H. `4 P9 W. A. k% O ifelse(other turtles-here != nobody)[8 A, `! m; |. \2 o% X. D
   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.
% }3 v3 w. F3 h& B( _" X- a" s* |3 i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " k( o8 d5 i& n
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. ^) c( `( M: }8 U
   set [trade-record-one-len] of self length [trade-record-one] of self
+ K5 X2 u$ a+ Z; k% o   set trade-record-current( list (timer) (random money-upper-limit))2 g5 K# n7 y9 R. a5 W

' B; d+ \  K( r5 U问题的提示如下:7 B$ ~* T+ \# c7 {

6 p4 X+ N/ u: R, {9 M9 w+ serror while turtle 50 running OF in procedure DO-BUSINESS% {( A- H% K" d: i
  called by procedure GO
" w5 \5 D: E. P' v0 f; rOF expected input to be a turtle agentset or turtle but got NOBODY instead.* f. q9 j: V% V$ B5 z8 x$ m
(halted running of go)6 \/ U9 Z0 k5 d/ F: H' F3 ^& ]1 H
$ m3 K5 W1 ?3 m3 {
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~~
, t3 G. o6 P0 X5 }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6 f7 J4 E  ?; a* n: i) s8 e
globals[
, t4 ]. e( ]7 L2 Q- Uxmax4 L% J. Q1 v0 _) L; u
ymax
- W/ p7 Y, C$ c1 T4 s* M. Lglobal-reputation-list3 `- k( i. c$ j8 y! {) \
! d1 j- b9 t* ~
;;
每一个turtle的全局声誉都存在此LIST
) W- N, j- R% Z. n/ ^$ M5 E1 Dcredibility-list* t% V' B# t' v: T) @
;;
每一个turtle的评价可信度
$ h0 R$ H" u. V$ o  ihonest-service
5 X! e: ?6 p; o6 a( Yunhonest-service5 m' h4 O& S- P$ B  G
oscillation7 f! k' E6 p8 s- Q
rand-dynamic2 J) U9 N4 Y& Q) u
]
2 A' C* I7 J0 h  l) K- M3 @" l- N4 W2 D& A8 j! Q
turtles-own[/ }+ B' h+ F/ q6 ~& q( L" B
trade-record-all
& o  p- b/ e2 y9 t! G, f# I- v;;a list of lists,
trade-record-one组成* z7 b0 J: `0 {2 w/ J6 F3 P
trade-record-one% t" a0 \9 P4 f0 Z3 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0 ~+ J/ ^! b) d6 ]2 A% l; w
! D- ~& i) O+ o7 U8 F
;;[
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]]! i9 Z0 R' B8 R( B* \8 G* U1 T" ]
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]
, Q5 Q) W8 ^% x. A0 B5 c5 ncredibility-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
4 k( w8 z/ h- V* @neighbor-total
% K3 u/ R0 B8 z1 j; V;;
记录该turtle的邻居节点的数目
0 [: A" c, Z! T4 ztrade-time$ U# D, a' G; _
;;
当前发生交易的turtle的交易时间
( ?- i3 Q$ G3 ?  I5 X# Z! T# m! _appraise-give
& U0 m* r# V& n) M$ c5 X0 w3 |3 }" u;;
当前发生交易时给出的评价
- S$ M( I( I0 X' P% u" E. Jappraise-receive
* C) j  b) H$ B/ F& j4 u;;
当前发生交易时收到的评价
2 e8 U0 K& J* j$ q+ U; cappraise-time9 f1 ~" g/ ^% n) w1 N7 z; Y
;;
当前发生交易时的评价时间! I3 n6 ?5 n$ s* @( [$ s) _
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- [3 H. F% ^3 X" Ktrade-times-total
: e  G$ v# o' `/ X' N;;
与当前turtle的交易总次数
7 l8 J/ }5 q* s" C4 h! z$ Gtrade-money-total
( j, }. o7 w3 f5 ~  N;;
与当前turtle的交易总金额
6 s* R, K. f; g; R( _. X3 Dlocal-reputation
7 n( Z4 i+ d( }7 e2 E) ^4 s$ ]global-reputation& {+ G& T7 ?) I! a2 d' i
credibility
0 X  O4 ~/ c5 P* G- Z  Y) |. L;;
评价可信度,每次交易后都需要更新
& r: w2 p( z' l* U8 ?credibility-all- v' w( b- q1 Q  H% j( b
;;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0 Z* D6 e5 e$ i. e' G

! w* x( b: Z% ]. n4 G- b+ R;;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$ r! N, Q; e" c9 N
credibility-one
8 B3 M! ^% M2 a2 U' n  A;;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, Q" f1 C$ Q1 M2 z: G' u+ r  |
global-proportion0 b' Z2 h* z& ~
customer* e8 y! \0 e8 N
customer-no$ o  N9 e% O' R* P2 g: {# v
trust-ok
9 a& G4 Y! Q4 k* b$ c+ itrade-record-one-len;;trade-record-one的长度
5 t: u4 B) L- O]
5 E* Q/ y+ ]- E! u, `2 k2 k$ Q$ j: P% V% \1 |
;;setup procedure4 v; `! J0 {# x2 z* y( e3 w
2 Y0 J8 n3 h0 x% R
to setup" w/ F9 x- j$ P. h0 e  ^3 T

$ J1 r' e) A: s7 i& O" S" k' Hca
; G7 I& v( [! c0 ]; u8 |
5 d  Q- _# Q% A: m
initialize-settings

% s/ M4 b0 ~. z' [  ^* q/ d8 }% c1 i: [9 P0 u/ Q3 R1 p
crt people [setup-turtles]
. W' O( e5 h9 e

/ l' L" z2 @8 R- P0 Ereset-timer
' a5 _# j: w  R

0 ?; K  l' f' W& L! f& Apoll-class

" }0 J! l) j% E9 u# O
  y* C3 u% Q* Z! q. f2 P! t: T$ K$ Hsetup-plots
1 r0 o/ q9 p/ R: j) R! Z/ M1 J2 K
' ?8 q+ X. \' C6 g; F4 \- i5 x
do-plots
0 e' b  y! W9 f9 m
end/ c( O2 ]4 V/ l; ^: K

# |5 O, Y( H3 V9 D8 ]to initialize-settings
) c, n9 f! F% W& o# k" N1 k* M: v( I( d( I! l: {
set global-reputation-list []

4 Y4 a9 D! b# J* E5 X9 J3 p; J& F
3 @8 o' r' d9 uset credibility-list n-values people [0.5]
3 j% W( k1 [7 v

" S" Y; q3 a* n' l  @& r/ p( L( bset honest-service 0
: @0 h! V8 \. o/ N4 N; G) p) K$ G  O

. E7 ~, ^  M, X$ L( M8 Mset unhonest-service 0
: l9 M7 H) ]$ w& L3 w( c5 a

; C4 @1 ]9 C# a/ `set oscillation 0

" h% H' Y% Q) {* L4 Z# ~+ F9 ^3 v# e- S3 Z  P
set rand-dynamic 0

- }/ s+ @! e% C3 g1 Send+ i7 K+ z# r4 x3 @
9 \" ~5 n, N% R
to setup-turtles ! Y, @" _$ R) f  J
set shape "person"& v. ]" r2 b& r3 K6 N0 o' Y: r
setxy random-xcor random-ycor# W3 M- I4 R0 h3 @1 }/ Z
set trade-record-one []4 H" ?% @/ F3 v6 Q" g, j8 }

5 g/ i; {: i3 o. j2 @9 H) k6 j+ qset trade-record-all n-values people [(list (? + 1) 0 0)]
' S* b8 o( L" W% A$ ]$ n! D: w1 @
. _6 A; T' v6 K) b
set trade-record-current []
  a( J6 D; {+ @* Uset credibility-receive []
: x, a8 J  b: `4 h  ]set local-reputation 0.5
  s, z+ c! m( `2 O. I; B6 eset neighbor-total 0
% }& f5 t9 _& L9 N$ nset trade-times-total 00 T! `. b6 `7 G
set trade-money-total 0
9 r! N5 }; j4 |( y) d* R3 Qset customer nobody
) l1 @+ @) ^5 P9 _% j) G0 x- G7 Zset credibility-all n-values people [creat-credibility]
- Y* {+ S9 j5 w# eset credibility n-values people [-1]) i! k9 g+ F5 j& I  P% Y9 h
get-color/ D# l* ?- Y# _; X) b& a
& D' K2 `2 ?7 a8 Y4 @: |' z
end
: M0 A, x6 X* L/ j
) v1 F6 Z! l7 u' _% q% k1 P3 pto-report creat-credibility6 j1 H/ {/ E4 M( F7 z) R
report n-values people [0.5]$ o" q' ?9 w$ ?
end
! ]4 q) ^* h) v4 h
0 v) N* I1 i9 L8 `& a$ Y1 |to setup-plots
# H" ]: A2 h( r! y8 J0 w; }" a* {
set xmax 30
8 M, C0 Q* G4 s' ?- P
, X8 f0 G: E0 _6 Y, w+ h
set ymax 1.0
# ~7 Y- j: T9 x: l% o

% T9 t) H" T- V5 @$ P$ a. @9 Bclear-all-plots

/ i, S# x& j2 \2 f
: X5 _0 _( D& M  zsetup-plot1
; @0 S/ ~2 `# x9 L! }- z
. @1 C& A' V, V( t# B8 ^) n
setup-plot2

$ _; B  ^! ]+ A2 B1 w2 B9 E
+ o3 p+ t; e* C% c5 Xsetup-plot3
$ c) Q% V9 c- O# g9 |# ]
end  m1 k2 e0 R/ G( R! n' {

! y5 G. ?( l! O;;run time procedures. F0 j5 g: W( I
4 W6 a3 @) @4 u/ ^2 y( j
to go
8 s+ e) z2 V# E2 a
! q" |( F# B2 E" Z8 o  |ask turtles [do-business]
0 v) H, U. Z/ g4 x  P
end4 s) V5 u  P# F" @" @1 P
, h$ k! _. _6 @! V6 H
to do-business 2 q5 n% A, S) {7 B& T

* s' n# m- T. f; w' I" Q0 \- v/ m  O/ m4 p* L' p) `# ~
rt random 360
& T6 R8 o$ R  N5 ]2 {

& Z) ^/ Q8 G) i: f8 c- R/ Hfd 1

% `- [+ w, d7 N0 k, j% `
+ p  m1 S. F) N' e9 h; Z. |ifelse(other turtles-here != nobody)[
4 J$ i+ T/ Z. j( d
4 e" C/ Y% E/ b  v
set customer one-of other turtles-here
5 h3 b1 G2 ^+ X* P/ z! ?6 _
9 f0 D1 @) ?3 J1 \
;; set [customer] of customer myself
2 `" s9 E8 m  e0 L" J

# f' i9 Q0 Q6 cset [trade-record-one] of self item (([who] of customer) - 1)" x; @, ^0 u- V. J. F1 D0 {7 ]
[trade-record-all]of self
/ M  c  k7 R* ]+ p! P;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 n8 T0 E$ q4 u- U+ J" h% ^. j: y7 h4 E; d
set [trade-record-one] of customer item (([who] of self) - 1)
% I9 j- V' o  Y: K+ F, I[trade-record-all]of customer
# Q& a' D: y3 N: o* e
  d+ E+ ~: \) a) E# w0 B# A# Q
set [trade-record-one-len] of self length [trade-record-one] of self

3 T9 f! l% s- K# d. ]
& r4 G& n2 z0 D1 X' vset trade-record-current( list (timer) (random money-upper-limit))
- i7 T6 N7 v( h! X

4 u, @2 y4 c. y9 R# E1 Vask self [do-trust]
! u/ `& J: _' _7 O;;
先求ij的信任度  F' a8 x% |* a' _- T

# Q* @  o8 C1 q) O6 G9 _& v- bif ([trust-ok] of self)
" O, m  T6 s) b, G! E;;
根据ij的信任度来决定是否与j进行交易[
* o: I0 h7 \9 y% y: Y- W$ Vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# ~7 ^- h% M7 P; r2 y9 |$ j' u3 `0 N0 q0 q/ R+ a
[
) {+ l4 m+ V/ P

: @& f6 k( b% k( [& h% ~do-trade
- x& a3 P; i% }( M( k7 B
3 n) A& E3 p1 {" j3 w- Y" E
update-credibility-ijl

0 z! O, @) W1 j
$ ]; D1 s' |2 c; Eupdate-credibility-list1 M$ J. Z% o. ]
6 y- O( W! q& P# }) [# I' T

- W$ w7 B) Y% U6 ^9 A% X$ H+ rupdate-global-reputation-list
% e; L* i) j. D& R, X+ b' F$ b

2 c+ \0 Q0 ^1 mpoll-class

! o+ s# c: \/ g# [2 ], m  @% d# R: H0 s. Q
get-color

( ^: y+ C' Q% A# W. b; ]: ^. n' f# `6 `# I+ N9 L
]]
# a2 L& d. d$ Z& m  n
0 }; T% N+ M# R% `;;
如果所得的信任度满足条件,则进行交易
9 z) j: O+ R& G) Z( a' g. {. W! k( E$ b9 I- U& N
[
3 d$ q7 v9 X/ E, |2 {) K# J

8 R! n  q7 a2 p# W& |8 X2 Ert random 360
5 p, m7 Y+ E6 F/ q" F- _2 \
. N6 u6 o$ n% F* S. z
fd 1
3 ?3 ]% R$ y4 G# R3 r' w

: t$ q$ A+ ^$ K8 l; ~* P+ Q/ x+ H]

1 F, d- S6 ]) |5 @8 Z0 b& V0 \2 E& C& L" R' m8 }
end
) q, V9 }7 F8 Z3 x, K: x# g" Y8 v2 I
3 W% R$ U9 m/ h* ~' j7 D" S0 C
to do-trust
2 o9 s4 H* _1 F* d. A; sset trust-ok False9 M+ F' V: k& T7 p/ K- k  ^

9 i, L  F- q$ h
% g9 f9 R0 }* v" g& a. w- ^
let max-trade-times 0
/ t& U# R3 Q. t, u- X2 r1 Mforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 Q/ j( L" o5 Wlet max-trade-money 0. r' _  Y6 D5 t* c3 J3 s
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# L; I% g( L6 N" alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) K. s) n5 Y6 |, }

$ n4 J$ |7 E1 m; H$ h# R
) Z; J7 s# J9 O6 t0 {( R
get-global-proportion3 d' G5 Z' r: {% G; l
let trust-value- K  E: A6 t' {& 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)
4 i9 f" }% k4 n; E
if(trust-value > trade-trust-value)  n1 @, K- D6 {! O8 x( s
[set trust-ok true]
2 a( Q+ N  G- j0 X4 Kend/ T: }; r7 y" g! H

: {6 B* B1 [9 ]0 y, dto get-global-proportion( H1 Q) u7 y" v) r; D3 M" ]: |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 G5 I" \! W6 A% g& P! {. g& r
[set global-proportion 0]1 R* @. G# Q7 b# X: }8 k2 x% ]1 f! _. |
[let i 0
6 Z) G  m3 e( @8 dlet sum-money 0$ E2 `7 Q4 {1 U: I. |/ v- X( K
while[ i < people]3 G$ q2 {% G% k" L
[
8 g+ z1 {! f, l5 h: {& Z: Tif( length (item i  a" C' ?: T8 ^6 j+ P
[trade-record-all] of customer) > 3 )

* l7 G0 M4 j! q2 }) ?, @[
/ Q  ~6 X  w  G9 e8 m0 @: `  @set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), j, z' |  J0 _% I( n, r
]
, h8 `8 ]3 D% c& `5 s( C]
- G  E* \1 t1 s8 ilet j 0% h2 p6 t$ {: Z# {
let note 0& B- h) R7 P0 R: l: ^) D2 x/ \
while[ j < people]. C! H9 \+ Z2 J7 L2 h% a& K
[
, f! Y6 B$ ?" j- a4 c8 uif( length (item i. D; p% [3 H# R' S: z2 @
[trade-record-all] of customer) > 3 )
1 Y/ O2 R" `0 s$ B2 O! }1 H
[
/ {: n3 ^( l5 Q; M( ~. d2 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  [4 c4 o; u' ^9 Q1 G, J) j
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! G1 x1 y; k( u3 u! Y& o. z2 N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ X% K& R, o* ?* a
]  `8 u- y* n0 Z" j! b& n( @, Q, H
]4 J2 r, R# R) E
set global-proportion note% U" W. O1 z8 _/ @/ A% t6 C+ A- B2 A
]
* k' s4 V; s; T. [: x5 vend/ o- |5 t7 G/ X! ~: x; r/ M* S
, k4 q3 g" J. j6 e- H# E1 e
to do-trade: j6 W- ^. B! V
;;
这个过程实际上是给双方作出评价的过程
: ~0 v) C9 g0 W& Fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 G, w, D. H9 u6 w( j2 H
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- M" x- M* }$ g9 q9 {9 F
set trade-record-current lput(timer) trade-record-current5 z7 S! p# `/ k: N' [; m; C
;;
评价时间
) d2 L# r) z8 task myself [( X) k4 x! t: W* S
update-local-reputation- t$ J8 {% Y3 r
set trade-record-current lput([local-reputation] of myself) trade-record-current8 J6 a" S: ?3 }, [) X# H% x
]' K+ J3 `4 Z% F8 L* U& w( L1 l3 d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) W2 a6 R1 ?: P;;
将此次交易的记录加入到trade-record-one
. r% s6 s( i& h9 p5 i: _  Vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  h' w% {# F' b4 t
let note (item 2 trade-record-current )+ i5 m* T  V- V2 F+ R' d4 U0 i* t7 Q
set trade-record-current
, l- u% |( @7 Z  _3 {3 u0 l(replace-item 2 trade-record-current (item 3 trade-record-current))

2 Y; I) V3 {  B% R: }! Eset trade-record-current8 L, @. {/ e: F. B7 V# z$ V: o4 b
(replace-item 3 trade-record-current note)% O6 @2 j* C( d8 v. K! `0 T

) ?' Y0 i2 p! k% G

2 U* _2 m$ Q9 {/ wask customer [
& d  a) b6 o! c% `update-local-reputation
$ Q4 c- W/ `# J! d7 T+ C6 {; zset trade-record-current! S6 w: {) Z! ]) P5 R
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 Z& e! d: A7 [
]
8 X6 J  z# c4 ^
* f, \$ E- ?3 r
( ^( k6 I: v* s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 a5 F, }) i0 j8 ], Q( E* T9 m% z
1 A: N$ i1 }9 p) r( s' H+ C6 v
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& W9 k4 }- D9 e) g( s$ ?/ d
;;
将此次交易的记录加入到customertrade-record-all
/ Q( o" [" N# i2 A& q' p+ y( Vend
6 y7 G4 Q. E" P. f- s6 u3 R$ J% x) p+ m
to update-local-reputation; H$ k+ t1 ]2 s. c, g0 {" [( R& q
set [trade-record-one-len] of myself length [trade-record-one] of myself3 u7 U. Y3 c, i: |
" a# T% A% `- n1 b0 ^' t$ c

  u8 F3 d0 }$ V/ X;;if [trade-record-one-len] of myself > 3
. ~& I# E% \, y* v9 o' _
update-neighbor-total
6 p: f1 E) _9 L" D4 z;;
更新邻居节点的数目,在此进行
6 y/ `/ V' j7 M+ n- s. }# X, plet i 3
% p3 m9 i5 b# u& X% x- U6 G8 Alet sum-time 0
0 {0 U% ~; X) z* H- Iwhile[i < [trade-record-one-len] of myself]
0 ~1 w1 [# I: G. X[! C6 p  n9 k8 _; h9 e9 v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" S) e2 d& @2 U! s
set i
+ U+ L  p* P# e; B( i + 1)

9 c0 J/ z" W5 y4 W, M8 G]2 M6 R, y: v) U
let j 30 k2 @2 L" F1 S, H- h$ s) T
let sum-money 0
0 [! Y8 b( M9 Q2 Qwhile[j < [trade-record-one-len] of myself]* u# C3 G* C% X1 [! R, w% x
[
  }7 x& `; @/ o, a% Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time), M" G* M  @* r$ w. h3 d
set j
" D, ^3 h! ^, f: }4 J( j + 1)
5 W/ X  d7 L0 D5 j( g; P& M
]
; C6 h7 {# t4 O. _+ Dlet k 30 W4 f, h: Y/ p- C- N1 O  [" ^
let power 0
% _; V4 @9 E9 E& Y% p. T; }let local 0  e8 @4 z. ?  @8 t& o* b; J2 E
while [k <[trade-record-one-len] of myself]# p: |* Z! d! ^3 z* q( j9 ^
[5 S% J- J# {' F; P
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) . I- `! n. x  U- C
set k (k + 1)
  B; ]3 v/ l! q  @' G9 S) B$ s]. c9 W- C! F+ e& G( r
set [local-reputation] of myself (local)
; C) o4 r( p) z( Xend
: S. U& t  R0 `# A6 ]3 {" }" t' W* [9 u1 N. ]( U
to update-neighbor-total3 H/ _  @7 j6 }! O5 J+ _+ ]/ r. ?

, z6 Y% s% D! M7 ~& P: }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 L) e7 b) j2 L- h4 p
4 Z2 B* `9 V' J4 E4 e: t
2 w- D5 ?7 t6 N
end
+ l; R" R9 I1 Z5 Z2 z; d/ A
$ h- @$ N! Q. n+ o* p5 ]: mto update-credibility-ijl , i+ e7 P% S" _6 k
0 E/ {0 z2 ?0 z5 A& `
;;
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。' }' s0 ]9 q" H
let l 0
6 N2 R% d0 p: c& o* h; C/ swhile[ l < people ]' e, l' B5 v- ]/ T; U& X! o+ 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  g& o5 p! `9 z7 T# a- @. m' V- _: U
[" p% S5 J6 [7 f/ |2 x8 c& a& Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 `2 H3 ^- y/ b) u
if (trade-record-one-j-l-len > 3)( {; w2 \, X8 q) {+ d5 F1 N
[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
$ j( L7 q( d) q1 g- P7 Llet i 37 \  }+ l$ _, `+ h+ P" Z& H9 B
let sum-time 0
* O$ e( h' I& Q+ [1 Swhile[i < trade-record-one-len]
) M' @/ F0 {9 ^! @8 L6 K[( d5 c/ v  T' q: t) m- N  R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! Y4 H0 @9 ~' C9 p2 S
set i( X6 V; u- O; O' W
( i + 1)

  k4 G# Q3 t2 P4 J" M3 Y0 }]
0 u( V' Z, @  ilet credibility-i-j-l 0. n" ~* P4 Y% p' I- z/ z# ^1 N' h9 I
;;i
评价(jjl的评价)
/ G4 A0 ?  S) mlet j 3/ k! K* T2 D% F0 G, I; f& _* u4 m) r  C; D
let k 4
* n* j# }2 ~7 y) Y* I0 v! l; rwhile[j < trade-record-one-len]) A4 b* w$ t+ ]' r- J4 \: d! s
[
. ]( Y- l' k1 L$ Q; }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' J  f8 q) D- T1 D9 \5 x
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)
; ]8 `. z5 d; \2 [set j  R& `! {/ v; {4 Q
( j + 1)

: v8 |8 N/ A) [6 F1 H]" ]5 |8 ]. r; g0 H
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 ))
( {* ]7 s  E$ Q: p( i# V6 O& ?7 |4 V; F1 U% ~% ~2 @

) R, \) Q: k$ d# I% k. ^% ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& h  l1 I- c$ H0 s;;
及时更新il的评价质量的评价
, ~( w1 C0 G) Zset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ M$ n4 J1 V; e4 A  T% Sset l (l + 1)
9 `6 B! u. A0 v7 []3 C- t8 z. L0 G) x0 P: B( [8 @
end; \- N; p- u$ H3 ^2 C2 p, ^1 p. v& ~0 m$ P
) u0 F2 E% m6 R- |: y
to update-credibility-list3 z! o  `4 P3 u6 o" e( C1 E
let i 0
6 z& c- W, e- d6 i1 Ewhile[i < people]/ z- o: t. A0 S8 k8 M8 W: a7 Q
[
& V0 c' }- {( k# A  xlet j 0  H3 ~9 L9 Q1 l/ x2 c" z
let note 0
1 o  Q" `' d- d' Z! Ylet k 03 _0 W' x7 A4 J1 [3 Y( E* H7 u' C
;;
计作出过评价的邻居节点的数目# g$ }4 g* D+ _: l1 o. e! Z
while[j < people]1 P& s, |; T  n/ g! w
[
) Z# Z# Z4 H! h( Z0 ~if (item j( [credibility] of turtle (i + 1)) != -1)  L1 ~8 F: v! G! p4 E- v8 U/ d
;;
判断是否给本turtle的评价质量做出过评价的节点
  \  x8 D# O$ U( y( k# _% O0 z4 e[set note (note + item j ([credibility]of turtle (i + 1)))
/ r$ e2 s. ~$ I# o' G;;*(exp (-(people - 2)))/(people - 2))]
# k# u3 p; n" t3 I  @" w* ]/ d, }
set k (k + 1)3 [+ U3 {3 d- ^' X) f
], P8 i9 G7 d! W5 q7 I, u
set j (j + 1)0 [2 A4 r% B+ N( L- a
]
, {6 Q6 A% {3 qset note (note *(exp (- (1 / k)))/ k)
# Y6 }6 x  p( x8 R/ G" m$ |set credibility-list (replace-item i credibility-list note)$ i, C  g4 e! m; O5 s: C3 l
set i (i + 1)
0 a- @5 e- K% q8 z2 u1 t( D]+ `0 J6 \8 `# o# P. f; m  A
end: q! _* R, d% c3 r

0 t" ^0 q* F4 r2 c1 L) F& S2 `  Bto update-global-reputation-list
$ r9 r) L( ]+ \. i6 h: Mlet j 01 {' j$ |2 D) L  q- [0 r
while[j < people]
  u7 y2 ~6 C. z$ h[
0 X! i; K& `8 I9 o4 V5 |let new 04 |% Z4 e* n# I$ P5 c2 h
;;
暂存新的一个全局声誉
8 R1 }0 |, n  Hlet i 0  m1 Q3 r3 Q0 u5 z
let sum-money 0
( t4 g9 r* K  y. klet credibility-money 0
7 G2 J# ]8 }/ F) c  l/ Dwhile [i < people]
; {0 ^) {! k; {- r; d! M2 N[0 F1 h+ K" w$ `: }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 e2 P7 H  v7 K9 n: z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( e: F% |9 p6 i. e% lset i (i + 1)
' _; _9 z7 b( ^5 d& |, ]]1 b$ ~; a! j- V' m
let k 0
4 z5 b# |) P  N% N1 |8 s" Nlet new1 0
+ h1 _0 q& M1 X  B+ A4 Mwhile [k < people]9 c# I; r# I# j9 h1 S7 @
[
+ O" g/ f# Y9 H3 e, |$ d0 @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)! Q' y/ c# L" {5 }
set k (k + 1)
, C' V9 R5 F& L$ q! t) G]' w$ a4 M4 ^0 @) e; g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: ^, t( q4 `) g* O: G% F% ~5 zset global-reputation-list (replace-item j global-reputation-list new)
9 U6 h. }- r5 e7 n! Bset j (j + 1)
# |0 v* _/ q# P: J, P]3 V# z/ m) b1 u% w  y8 ]
end
- g$ q& N* `/ Z3 Q3 Q/ V3 `3 L9 k/ O  W8 g( g9 `! m7 N5 _

- ]# e4 ~) p0 {: u) Z# j. m5 K0 e
to get-color9 l  q$ V( R1 X) b$ K3 O7 |
3 q. s4 u1 r$ _4 v' F' D6 T
set color blue
$ V9 }) S4 R% T" r- s. d, x8 H6 q9 b
end
; p7 u0 L6 I8 Z, n8 g( i% A. Q
3 {& Z; @" N6 r! ]' i. f$ X* @+ Ato poll-class
4 x! T; H" D, nend4 ?% `% v  k$ A4 ~

. a; u& S4 _2 Z; P: g8 Y; B1 s) wto setup-plot1
: G! G! r: B+ A9 n
9 `6 K  G7 z1 r. j. rset-current-plot "Trends-of-Local-reputation"
- i5 w# |2 O$ Z* l/ m! J

2 ?+ o7 o% P% X6 S1 I' {5 x4 Cset-plot-x-range 0 xmax

; s. T% r. }7 S
4 @* t' j8 s5 T! b: Bset-plot-y-range 0.0 ymax
( D" S  g1 p2 q! B9 J& }
end
5 \, n4 v: N+ A- m# k; U
$ q) O8 G9 B% C! L5 e! P; Zto setup-plot2/ O0 @8 c" |+ [+ s" G1 l3 h4 x

. n- ~( |0 c2 ]set-current-plot "Trends-of-global-reputation"
% R+ J( W! p+ P/ C; |
0 d; y' P6 g5 W# D0 Z
set-plot-x-range 0 xmax

3 X4 `! V4 @% Y0 p/ _3 u7 `& `8 O
" Q, o# Z5 s% Xset-plot-y-range 0.0 ymax

9 M0 l6 p7 @( O0 W8 iend
4 ]/ W# X2 f# G$ ^7 N% {3 t' C9 X- h5 M! K
to setup-plot3
* U- r1 F6 ^# K- M
3 \5 f. P/ S: q' l  sset-current-plot "Trends-of-credibility"
0 A+ x. s7 k5 y

9 P. M/ S  g0 m% n2 wset-plot-x-range 0 xmax
- |( ]5 J* q/ p! [

2 \" [# I" N8 d* h- Qset-plot-y-range 0.0 ymax
/ ~0 j1 |6 L0 V2 I/ ?
end5 U; H2 h( y/ f: I3 Z

- t9 w1 V; \5 p# ?$ bto do-plots% ?  B6 U8 n+ [' v9 s+ a$ b9 n
set-current-plot "Trends-of-Local-reputation"3 A( I" Y3 l! ~% \; o3 w
set-current-plot-pen "Honest service"
! ]* L! s* a! R( {- ?0 O+ Oend# u+ n, m) G2 z# c9 A
% H" q% z# |. w7 }& A6 _+ n5 P8 n
[ 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.% l+ j" d4 C# L

4 v5 I6 q7 M2 r3 }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, 2025-11-21 00:10 , Processed in 0.032597 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