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: 18135|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:
; [1 z% Z$ I7 O9 w' _2 w' Lto do-business : c0 j. E/ X3 ^2 M2 q
rt random 360
: ^: v- g* T6 ]  k fd 1
; N: ?, ^0 Q6 R3 Z* U6 B  D) h* Y ifelse(other turtles-here != nobody)[
# s; _/ g9 Z. j7 k# B: h! l; P$ A   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.# m8 P' K" e6 _, x( z3 {; w- v, I! l
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ v  g" N( W7 w$ \# n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer! x5 T6 B7 C. B8 y* m0 ~
   set [trade-record-one-len] of self length [trade-record-one] of self6 o; a# M) c. C- H7 A* R
   set trade-record-current( list (timer) (random money-upper-limit))
" s3 f# _6 A- I: C& v5 D& s. w3 j* h. u* D4 z0 e7 @
问题的提示如下:
; [& y, @3 |" x  c* |- c
+ I( v4 [# a% Q% t4 W7 y3 Yerror while turtle 50 running OF in procedure DO-BUSINESS5 t5 e. X1 h( Z" x  o
  called by procedure GO
, C$ \+ Q7 l9 ?- U; m8 j% yOF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ G! ^9 F4 A: H* i! c3 x! d
(halted running of go)0 P3 Z- k$ e# I2 L% V6 {
* }5 p3 z- F: ^9 U; }% r
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~~
) k3 X3 [: K$ Z$ M: N% N: y, D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) J: F$ b: A5 r$ B) K# Q
globals[
7 B1 D9 E7 i: u3 X, `6 Axmax4 c/ }8 _8 R9 M
ymax
0 p6 [7 ]4 A! o! ]! n( fglobal-reputation-list
9 x# n" E4 n& \
  [. a. m2 y0 D- G# e1 u5 V" S  d;;
每一个turtle的全局声誉都存在此LIST0 w. ^% v4 A* a1 \6 f
credibility-list
% ]! n9 c. `  `  j& z2 S;;
每一个turtle的评价可信度6 @/ j6 u2 n1 F6 ~5 c
honest-service% J: H9 }2 D) h# ~6 l* I) b) a
unhonest-service
9 \( L" W; x5 }! eoscillation
' N1 e; M& e. W+ Q! Q: U, L* Mrand-dynamic
% I& b) Q0 \% m: h% w, L]
5 T  L, Y* ~/ a/ y/ o7 q, x5 n: u$ p0 A+ [
turtles-own[, K1 c" r/ n0 ~, D6 y
trade-record-all% V% v- R" J5 x2 W: r# w# l
;;a list of lists,
trade-record-one组成1 i5 b5 n# z" u: t1 `# j) O
trade-record-one
7 `+ f0 Q4 d: M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 O0 {' X5 _$ a0 g! a$ P9 b

4 g6 u$ n6 F4 `;;[
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]]
  o" m# k1 x3 b1 y4 w: _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]
$ P7 A1 q9 k0 `- a' jcredibility-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
* W% C& ~& F" {1 y8 X1 \7 Eneighbor-total1 K- [7 q' {5 r$ h+ \; _' ~) s9 r
;;
记录该turtle的邻居节点的数目
1 \" R6 e; J5 Xtrade-time
) n; X5 K+ N! S4 ]8 T9 t* H;;
当前发生交易的turtle的交易时间
  V1 |; D: w' `* B+ Q( gappraise-give
) g) B) P7 A% W7 u0 U" r% T;;
当前发生交易时给出的评价
' s: ]8 `3 p6 u& A) tappraise-receive- C8 r& T$ b5 p1 w
;;
当前发生交易时收到的评价0 L( p% _1 {$ R& o1 t  S* j8 s9 i
appraise-time: Q! h9 N6 Z+ J4 s5 g
;;
当前发生交易时的评价时间
* l  E1 P9 J* d  T) X% Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉' a4 }. E( h9 @- Q
trade-times-total4 Y: X. v7 {6 r) G& O! Q
;;
与当前turtle的交易总次数9 |) l( l7 y, W( Q8 g
trade-money-total
2 g+ n  e  k* B& S, Y;;
与当前turtle的交易总金额
1 c% ?8 {9 ]& ^( d* j) X  Wlocal-reputation
' |7 z! [$ ^( K3 u" a+ j& iglobal-reputation
; O+ Y  W% x/ Xcredibility
  J' }, t6 m/ N: N+ J;;
评价可信度,每次交易后都需要更新6 d! `* C: D  B0 W
credibility-all- L  f( i; [; v8 `8 r% M3 ^
;;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, M5 T2 B- K$ Z" g3 R  Z5 L! g

* T3 P5 t4 D, d8 d; r) F( G;;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0.56 L7 P& V, [- f1 h2 ^( I, R. u$ T
credibility-one( |- W; Y' S3 h5 a- `  S3 R+ b
;;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: ^# Y% g& t3 q* _% ^$ o
global-proportion' r- s  `/ [6 A* ~" z/ Y( E
customer
* C1 L2 b2 e: Z' n0 c- O! rcustomer-no
) x. x: \6 @$ o* I% u7 Ntrust-ok
: y% Z9 z) S! c2 P( |. C7 A) ytrade-record-one-len;;trade-record-one的长度
* e7 T( W9 ]/ x1 x8 c3 Y]
$ x1 e6 w- z4 n0 I  o5 t. w" T& i3 k/ y) b
;;setup procedure
7 _) N' N1 C6 d% p4 ?
, U; U& @( P, }" m0 v. o' Dto setup
, p) t9 Y; r/ t! i3 e) |
% W: K6 @% Z- l1 J! U/ Pca

% x6 `" j2 b7 t" g  e5 x
$ e: d4 J! w8 J8 k0 V* tinitialize-settings

5 X+ L: A1 C& `" x" E' _3 y5 \5 O) Q9 G. a$ n- e; s
crt people [setup-turtles]

4 S9 D  L$ t4 @* h" T% E3 w! H, w: k' ?2 E4 k
reset-timer
8 n8 g) F4 ~% }
, Q; @0 _0 J9 n& ~
poll-class

( X6 x0 J3 T$ s' q( h
# ?9 ?( S" N. m  l2 vsetup-plots
& X- i: N2 m: [* p2 v. N/ ~/ \

8 H1 u6 F; A/ |  I; C1 L: Q, ~do-plots

; m4 O! o: I" W2 o$ F( N! Q6 mend4 I1 N* L- ]( ?
+ I1 ]- F" d/ v5 o0 ~2 v& R
to initialize-settings
. U8 v1 d5 ?! H- E5 o/ T, J
& M/ Y9 h/ o5 @set global-reputation-list []

& O6 m6 k& f7 u9 L) g; ]! s" R3 N, P( F- X# [7 I* r2 h( N
set credibility-list n-values people [0.5]
4 }5 ^; P7 j# D

4 S3 q& C/ P4 L! X9 ?2 |3 i- m6 K9 vset honest-service 0
+ s2 d; s3 x5 u; \6 O

/ ]$ e* b* a4 @1 G! r% Hset unhonest-service 0
  y0 O$ `2 ?9 d8 @. c9 [
/ n/ W, k. c8 r. I) R
set oscillation 0

/ z5 Q) L9 Y& p! i
: q3 f6 g$ F; e$ [- ^/ M2 \set rand-dynamic 0

$ A/ U( j0 b1 M% Aend/ _% r. A3 ~4 x: E, g5 D8 |  C

. r2 Z# a( n8 x1 W: l2 B8 Q* lto setup-turtles 0 g1 z" x/ y% _4 j" s# C' r
set shape "person"
' e, _3 B% F" Rsetxy random-xcor random-ycor
4 R, M' s6 V' V) q8 y/ K3 \set trade-record-one []
) V- i* j6 v7 a, M
, u0 u* s% }  e1 X" P7 a
set trade-record-all n-values people [(list (? + 1) 0 0)]
$ B# F7 q- B. |4 A8 A1 F5 m! Q

3 Y( n& x) e6 k5 ?  g8 oset trade-record-current []2 _% l( `& L* L. o
set credibility-receive []
. o* k' Y) U5 s; M+ d$ M" iset local-reputation 0.5  j) ]/ p/ @4 i- ?: Y0 O
set neighbor-total 0
' j! ]/ |5 e3 X% oset trade-times-total 0
& I! C; N, ^4 T0 ~& K( }6 Qset trade-money-total 0
* g; T. l5 T1 H, y- K" s" yset customer nobody
; W5 g, U, v4 M; b# J" @set credibility-all n-values people [creat-credibility]
  x7 Z" V# K- a; s, [; h9 [5 S9 wset credibility n-values people [-1]
1 s. s6 H9 ?& a/ ]$ W0 [get-color  D. \$ [+ V& A0 d2 }; F$ q% U

  x% k( }0 F+ o; l: e* y0 C; Bend
4 i2 D" O/ u& m- [( X2 Z" X
  t8 A2 e. _8 F1 Y$ M0 d) [to-report creat-credibility2 F7 R8 P: M/ J& ^: w$ ]
report n-values people [0.5]
* z. E4 k. p/ `! Wend
1 n; N+ }5 N% r) q5 D* M; H5 n3 l8 }& O
to setup-plots
8 [; \: o' t* `( `
  J3 y; m& z; e2 s1 _; J) _set xmax 30

( B% u& M# R1 J1 @/ Z% P% t' ]. ]( Y% O
set ymax 1.0

" E) d1 O' I! z# z1 b) ?2 ~9 L/ D9 u9 l0 ~$ ~
clear-all-plots
8 I4 ^/ ^' M1 a& V

1 ?5 Z2 T9 _/ {# Nsetup-plot1

! r/ c% W# R1 j* i3 T7 G$ ~) n+ Z+ J2 M  ?% u$ m1 G
setup-plot2
" q5 y5 v' b# I" R% d& a4 S

3 S5 A% c  O" H4 p" h7 {setup-plot3

/ K# l5 {. ~3 S, Jend
! o& N9 B2 D% z9 |+ }& G4 V* x& b* a5 E! t0 t9 G5 C5 h0 G
;;run time procedures
4 E( o7 ^5 ?* h7 Q5 b5 D
7 g: Z6 z5 l; k% V+ b& Q7 v5 @2 Hto go
( _! M7 Z. _' E5 V% x; Z
8 b" H3 R9 ?) {5 H3 C& H1 p: Nask turtles [do-business]

( ?1 Z/ i. |6 N. n/ ?+ Rend% W" ^1 d1 N# _/ D) o

9 d! ]0 O( z# P: V% cto do-business
& n7 T  ?  A! u' C9 ^

1 Y/ a5 ~1 t# B5 ~3 @$ E# F. m4 I) ^! W4 {. ~. Z. W
rt random 360

2 D. G$ u) m& \* G7 ~
) D6 K, [! ?, z% jfd 1

7 g' M3 E) ^, i2 M. V# f
9 R. [9 \5 p8 pifelse(other turtles-here != nobody)[

# U" W. R1 B; b9 t) {  |( G
9 C3 o- N! i3 t6 {5 t" b. dset customer one-of other turtles-here

) s2 K$ f) E8 G- b9 _
- W7 }% R/ N, l- z;; set [customer] of customer myself
# `0 X  ?. l5 `9 Y: `0 W

7 P2 x8 E6 V& E% eset [trade-record-one] of self item (([who] of customer) - 1)4 N8 p& p6 K8 S3 {# B
[trade-record-all]of self
' l% q1 \6 ~$ x7 B$ Q7 j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- `( c; ^8 s- Y- x( F' X
8 ^8 d& ?# P( Rset [trade-record-one] of customer item (([who] of self) - 1)
8 ~# v2 R  `) t( x: P' N1 y9 v[trade-record-all]of customer
3 T+ U: @* O' E- Z5 B# S$ B3 C
4 e) n" c  `5 |8 K& Q$ W
set [trade-record-one-len] of self length [trade-record-one] of self

  f; w" |0 ], @! Q" \+ R
- n: c. d8 V) s' f! B+ @" I  `set trade-record-current( list (timer) (random money-upper-limit))

7 C( h0 U6 ]6 h1 p+ ~' @
5 @# @0 j3 D( j0 |, ]ask self [do-trust]
" e" S6 ~! @1 |; [3 d4 R* C' `;;
先求ij的信任度4 B8 ]/ }. Y, U, u

0 G( Z$ ?9 d$ s9 I; Sif ([trust-ok] of self)& O8 Z- y+ ^3 D; d7 J8 B
;;
根据ij的信任度来决定是否与j进行交易[7 G/ m$ s8 V( K4 j. M3 d) e6 S8 m
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- t% p  C# ?, o

$ Q) M3 d8 N% g[
/ `  Q- X( `0 {3 G5 v+ @; |- S+ a

* h8 k0 m! b7 Ado-trade
7 ]/ ^$ Y, m+ V1 B' i2 V

& }4 `7 g( ~/ C/ {1 Dupdate-credibility-ijl

# N8 g# i+ M0 u2 g% m( C" `( y5 F" r$ i' Q
update-credibility-list& C2 z8 n% d: D" f
" g8 R+ p; j2 p% o9 [) Y
' S8 }7 C7 s& k6 Q# s" C
update-global-reputation-list

& O2 B: ~. ^3 w2 O1 ^7 i' t3 {( q/ l2 ~3 G8 B) a
poll-class

5 O2 L5 R' K9 W7 u4 W5 ~7 Y3 _0 @* Q2 |. ?
get-color
* l3 A1 K0 ^  `: E* H

$ x0 V' c( [4 A0 l]]. T2 D+ k5 |. x% j$ F% C
  C: R0 g+ a# p* ?  [
;;
如果所得的信任度满足条件,则进行交易; k8 S6 E/ W& I  K( g

8 A! f% i- g* ?$ U% J. x[

$ ~& ~8 @$ g6 q- t$ m; y$ }
' G7 ^( L( d; d# L7 R5 A8 B; Crt random 360

3 w# h# S! i5 _' d" r8 z4 k* |  O5 Q7 K6 ]! |
fd 1

  ]& B* R  Q6 f' H: q
- Y2 v: z. ~  U]

9 j; I2 e! [. m* Q  D. `
! H- K" A# s! ]9 M8 m" I5 \end
( u- L, H/ _5 `0 h$ S

  ~1 ]% ~7 C" L: T- g: ~: L* Pto do-trust
6 \; Y9 \$ q  ~1 f  Hset trust-ok False
+ s4 L0 V4 s7 i5 u7 ~/ O, x/ Z; p1 l( J! e7 j- e/ G

; ~2 R9 b. x- Hlet max-trade-times 0
0 L7 q' J& n! r% R7 w, S5 Uforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ P7 g# \6 \% b7 E  nlet max-trade-money 0
* r- n. h4 B0 w$ Aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* E) }3 Q* q: [; }2 `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 j  f- C7 u; ^3 ]1 S- C8 r
6 l* s+ x; _- i. ^

5 |' S5 Y' r; yget-global-proportion' k/ _( ?5 o0 [. s; ?0 W- _
let trust-value
' L, P$ \' Z: Ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, m7 B; Q# n; T9 P
if(trust-value > trade-trust-value)
4 X6 S$ i. c/ ~" S' ^$ r/ _[set trust-ok true]2 i9 V# T5 F6 k3 G% V! C9 X
end* Z" W( D5 H) w5 Q' Z
: m6 V% f, i3 X* y. N: A$ o  d
to get-global-proportion/ a/ g* O! ?) `  [
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, S% O5 f4 R6 ?/ C( N9 J0 [; W[set global-proportion 0]! B- p0 O4 @' ^' G' v) }1 o' Q- F* `
[let i 0
* k# O) S, }( B4 zlet sum-money 0
0 y( x0 r( s3 r  U/ W  mwhile[ i < people]- I* Z+ \; H) e- q7 A. F
[( i! `. Y: @% i: {+ E
if( length (item i" x4 f9 m% M5 G* ?. S3 @# \$ l
[trade-record-all] of customer) > 3 )
" T# S7 M% W" `/ u1 n1 o' g8 A
[5 L; I" E: m( e0 i9 ^) d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 Y9 n2 r/ P# g7 L9 f. M]0 O9 z: k, [1 Z# m; o
]
0 e$ M  U7 J1 Z/ \# q; Glet j 01 a4 A7 r& p( d. g" q7 f; N
let note 0
2 I% R9 E! a4 t; o& `' U: hwhile[ j < people]9 _& u0 i5 {6 K/ {
[
9 y5 e/ m) Z2 X( Z: |7 K7 w! _- y& xif( length (item i4 B4 j# Y3 B2 m9 ^3 O& d
[trade-record-all] of customer) > 3 )

' z- _2 z% ^! n4 s- O6 j[
% @8 {3 ?( O3 E+ z* X) y% iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 ^! P; v# K+ z' X" {. w/ D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 o" W) N+ |3 n4 n7 n' U4 t% l
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! K6 J, O4 v0 Y% [# v]
6 d( l: Y: h$ `3 m  S]
5 r! g+ ^' c  }' iset global-proportion note7 U. v4 `# a& K& }
]7 K( M$ n  b, G6 D
end
3 A/ o: d$ X% m* G& P% t+ c% }8 x9 z8 r2 I# F
to do-trade
9 o, q: R9 j, S6 d) U' o;;
这个过程实际上是给双方作出评价的过程. R* L. j, n( q5 @- m+ a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. F* k' D- t$ t' Z. c1 x4 kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 u* p, q" s- k: _% I" E# k# oset trade-record-current lput(timer) trade-record-current/ V) }1 H/ H; I$ _& ^7 s- a/ d
;;
评价时间/ H" D# n% Y+ o6 J) E
ask myself [& a6 U2 F, `" M" C- h( R" C
update-local-reputation
  ^" q2 {7 y; k  r" Uset trade-record-current lput([local-reputation] of myself) trade-record-current
$ [& S% r2 w0 t( ]  C, c]3 V; g+ a1 ~$ {3 x
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" V3 ~, M$ R& o% V) z; A;;
将此次交易的记录加入到trade-record-one
' J0 L& Y" l+ qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 J& T* `7 u- Nlet note (item 2 trade-record-current )4 i5 M9 q5 v1 G- o, R
set trade-record-current: u& i2 v( }; s: _8 h
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 _: h) X& P0 c* _( W6 i6 Vset trade-record-current4 I- I6 s2 t4 w3 d: ~
(replace-item 3 trade-record-current note)
0 Z+ p2 H1 j7 a; l/ G: H- _, a2 h- z/ z1 s% G

3 ^2 Z# V1 N4 Z' C- q# nask customer [
8 G/ ]0 [1 W+ E3 pupdate-local-reputation0 g" |6 S; s. {( c' l9 W/ Z
set trade-record-current9 V0 ^3 V- y; ~, N( ]
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
, k/ e( G! n5 G' @' ~3 W, ~# ?. e
]+ p- h2 g) s7 L0 s: `

3 h. x/ z) D& g/ u6 w& z8 @

$ ?- s% F: w' L6 b9 ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: N4 y9 b% H; O/ K  a+ A8 I) h. w

) ~& x- X1 q) pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 u- x) I3 v$ ~- {. g0 K
;;
将此次交易的记录加入到customertrade-record-all5 k7 N3 w- [1 v9 c8 E# D$ L; I
end
  d/ E" h2 `- j/ M( v
, u& t! S  H5 Ito update-local-reputation  T/ T3 M+ \3 K$ U9 l9 z9 p
set [trade-record-one-len] of myself length [trade-record-one] of myself6 i6 ^: h8 s3 l; U

7 |; s4 j" e# Q$ ?7 J! _9 u' L! X8 j3 L+ |/ h( f  t- S5 |1 V- |
;;if [trade-record-one-len] of myself > 3

; Q& T5 a& L! H" ~update-neighbor-total3 [8 s2 e7 _( C0 J; H( ~2 V5 B
;;
更新邻居节点的数目,在此进行0 a2 z1 `6 D& ]/ a9 B$ x
let i 3
, t) C* N4 S% {9 xlet sum-time 04 `3 r8 K5 T3 o, u6 z
while[i < [trade-record-one-len] of myself]
/ r" C  v; y) ]9 g: g+ I7 y[1 q' i  T: c. w3 r' T% ]/ w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) Y/ I% L3 k/ b6 r$ Z# Lset i
. ?, E3 S& w9 g: a! B' f( i + 1)
5 u/ e+ K! r  T3 J5 q% n  j4 t; P
]% l) k" y* e1 ~8 F' ?6 [3 w" G, z  L
let j 3
8 E3 z5 b/ a2 j0 p, U/ H7 z- G# z9 Ulet sum-money 0
! o# |/ V6 [/ W0 J8 ]) ewhile[j < [trade-record-one-len] of myself]  d0 P& T+ ]1 r6 n+ M# ~2 x" G
[
; }; h3 W8 x% Z" }! `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)- E" G; i* b- S: }1 l. G4 M
set j
, Q6 d/ t# b0 F2 D3 h6 C7 E0 {( j + 1)
" \$ j6 G# m! d3 E
]
  ^! p3 d% |8 ]& n/ Q# q1 @5 Blet k 3
' S- J: X# V% J9 b" g) `" o7 [. N- @let power 08 @" c3 N! b5 {
let local 0' R0 H0 O. w9 B. ~0 ?1 J+ Z
while [k <[trade-record-one-len] of myself]
; k+ |+ D& D# H+ \0 Q# d; d- z[8 e5 h6 z0 W, x# {% U" k
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) 1 s! z4 E' G" l/ m# I4 R/ y. G$ |
set k (k + 1)' ?! X. g/ x7 O( \
]
3 A# _/ ]0 ~: Eset [local-reputation] of myself (local)
- U- s! y6 ]$ P: Qend: y& O4 A, ?" Z. }& K: M

, u, e: ]6 A2 a6 Z; Wto update-neighbor-total
# d2 Z& q. w/ ]* W+ C$ w
4 I& r5 m/ o8 z4 uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  h* K9 d( G& N3 L

. R" U  L- s0 s: j9 P7 G" [
( [2 ~0 H4 J3 Q9 ^/ [# I7 y
end8 ~& Z( R( g7 f9 l2 E. k; J

0 d) _! n. Q6 B4 E) z' s4 sto update-credibility-ijl
' H! U9 Y1 O  @( ?* [; N3 E6 |
: J; Y6 W5 E: H: ~3 y6 B4 _% d;;
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。
0 t8 e/ q5 R( A' M! l& Dlet l 0& a0 @4 h& a' }& `* d8 X7 R! y& P( ]
while[ l < people ]# \3 {3 x6 _8 Y5 s4 \  S; N
;;
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
: O3 C, `1 c7 d' g6 a  M% z[
) o" [4 e# T1 Q: Y- zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" b; u# ?1 k( P2 u* u2 j% w* iif (trade-record-one-j-l-len > 3)  ?4 @9 f' |2 x/ U& [! b$ Y* b
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one5 \2 ?3 w2 V$ h$ a$ i7 l
let i 3  C" y# [$ B, _( Q, o8 `/ s
let sum-time 0
; Z2 R8 }" F) D( `. P9 F2 Gwhile[i < trade-record-one-len]2 v/ j2 G# C, J4 k' n7 R
[
: Q( r8 K9 Z- B. C9 gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ l: q+ q" o) L9 yset i* W9 u2 W7 [# l& l
( i + 1)

6 J' d0 c% Z& E6 ?; R]0 C# T' Z6 p5 T
let credibility-i-j-l 0
$ C8 Y2 L8 W: l;;i
评价(jjl的评价)
' V( `' T8 [3 M3 ?& v* dlet j 3
1 F9 L* p9 r: K  E; Ylet k 4
6 o& Z- x+ _2 Awhile[j < trade-record-one-len]
7 N# D, v' f2 b$ G0 f- o2 Z3 D' \[: h: l. `7 ~3 N% x
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* q. |! G; p1 e7 vset 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 H6 x6 D7 y3 A& z; m, e5 @set j
$ _" E, H' i! E( j + 1)
" n9 _# ^* D: y' N
]
' D3 f' s5 l8 d+ w" [7 _0 l! b/ Zset [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 )); \. \- V$ u; T3 S6 Y, ?
# o, W1 a/ V1 w+ v  s# b

- R: J: d9 s" }! N8 Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))+ O1 h% w$ R9 y1 v4 x
;;
及时更新il的评价质量的评价( p' Q3 s! {7 V9 x- X/ b" C! ?5 T
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  v4 {) Q$ V) m% L  @! `7 hset l (l + 1)
# N6 f2 _9 C1 N3 v]6 L4 s/ y. _) b# o* b: f. |
end) _% t, r" @% \- @. a: ~

7 l4 d5 c/ `* X3 b7 q7 O( E: Eto update-credibility-list
) V1 b: i$ W- J  wlet i 03 z# m. w. P1 s" F' j4 V/ ^: r
while[i < people]
  Z7 o! A8 X7 C. ^! @[
" y2 i, W7 T2 P) B1 D2 \let j 0
- E$ B3 W) ]% Y  P$ t4 Ilet note 0( m; f6 v- u1 Q" M- {
let k 01 ?) N) U/ v, A6 T# O
;;
计作出过评价的邻居节点的数目0 F' @, [" s" o) G5 z0 B3 Z
while[j < people]
( d( I% A% Z. u( S: d) J7 |[0 o1 E6 o% A3 T3 n% p
if (item j( [credibility] of turtle (i + 1)) != -1)! s# Z$ ]1 W  T  }5 u  w/ F5 _
;;
判断是否给本turtle的评价质量做出过评价的节点: I9 F, \( {8 m+ T+ A+ b0 |& H
[set note (note + item j ([credibility]of turtle (i + 1))): i; x" @- M1 u" y
;;*(exp (-(people - 2)))/(people - 2))]
" ~+ a! O1 a+ l: |
set k (k + 1)* ^; d$ A7 L/ C( z0 P  ~0 [9 F* G
]
- J( Y- }' W, y8 B: e! pset j (j + 1)  u  U" Q5 H$ S. \* d
]
+ m' h; C4 q2 T& b, Y0 J' aset note (note *(exp (- (1 / k)))/ k): y; f5 N3 i) Q. k) ~
set credibility-list (replace-item i credibility-list note)
5 {! Z5 _' a' g7 C! g4 M8 u' B7 Cset i (i + 1)
4 S" x$ ^- p6 }1 _7 H]' b% Q" a5 j8 C* n, |" z
end1 h0 T: N: |" I6 Y8 M5 M" [: Y6 p

, S  u9 _2 [, c3 X4 @- r6 _to update-global-reputation-list
+ w+ p8 L, ~; ^2 i) H7 \: x* K" nlet j 0) e+ ]2 h# G3 ^
while[j < people]
6 G$ n0 i( e: @9 U/ u$ w, j% {[
5 `  y; T7 B7 u+ C) @( e& plet new 09 Y- |+ ^2 q/ Y+ `4 j
;;
暂存新的一个全局声誉
$ F3 U$ Y& \8 Z3 C! m- ^let i 0
+ _3 _* ^" g0 e' o/ }! n! |; ^% ^1 Rlet sum-money 0
  S) ]$ Z, p) C! ]( Glet credibility-money 0
- \* F+ O5 G# p1 Wwhile [i < people]
" g8 C, `: r* K- o, x$ G" v. s! T[% Y5 Z3 H7 d6 a7 ^2 |
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  N4 }! q) |9 A- j$ ]set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* h0 t# A% r: H3 [, M
set i (i + 1)
1 C4 i, e$ O2 z! y6 g8 x]" F7 }8 X0 B  W7 o9 X
let k 0$ |$ X. h3 K( q
let new1 0
! ~# L% M' q9 Y0 V% Pwhile [k < people]2 R/ Q) \2 {5 M% ^( _3 W
[" B9 a  d! S8 t; `
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)1 [7 C' O2 M; H* S1 G
set k (k + 1)
2 e3 ?8 |$ c; u  a; q; P, K]
: y! k2 P6 @2 w. Bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . ^$ O7 c+ i1 o& ~& {
set global-reputation-list (replace-item j global-reputation-list new)
$ m1 P- T. G6 k  x- Oset j (j + 1)
( H* l; O6 l$ e, L# N: z9 b) a]& {' @2 n$ T% |5 y3 o/ `
end
$ e/ X4 k+ |) l1 ?9 U/ |! r$ o2 o9 [/ ~' }0 w# C$ _

6 c. f  i; [6 H! I/ H4 L  [( @( j  c- a) S8 V5 V
to get-color6 n$ M2 f; E0 I  e" F% d2 p( H

& n5 m1 ?5 B7 pset color blue

  j- R0 U: ?- d2 U3 H, D# B( @1 wend
, i4 N) m+ Z4 W
' M, W' q( X7 n) X4 _: T4 Nto poll-class1 F5 W8 e$ z; E* f
end
) s+ B8 x! s1 ^: V% W5 }& z
7 f$ e# ], s' o! o; F. V- @to setup-plot1+ ^  d+ A, p* H2 n" t3 |$ h& |& m

; O9 e; O6 Z8 hset-current-plot "Trends-of-Local-reputation"

' p* F" d$ R5 K2 h+ n4 F& H, {+ f
/ T& B$ Z4 g, d7 C" }/ Q, D: X" Oset-plot-x-range 0 xmax

0 B% }+ |0 i+ B2 y* f% i6 `5 P9 \# F# T; v2 Z/ k5 |$ b3 Q5 H
set-plot-y-range 0.0 ymax

* u, u# W. e! W! Dend
+ S5 O7 E: P+ S, r6 I6 l; q
- |  @8 Z, I( Z( Pto setup-plot29 E$ ?) I9 @9 V$ @/ `" y
& T( S3 |: B( c* k  l" c/ ^
set-current-plot "Trends-of-global-reputation"

& f4 Q. A2 r' k) L+ |* P- f
: q* w3 g5 F9 u% S* u/ f- e, jset-plot-x-range 0 xmax

3 h1 R) n. Z2 }2 H
; f" ^0 r8 o1 y7 n! {5 iset-plot-y-range 0.0 ymax

3 y+ t9 ?6 w. A$ `end
. t9 v% t3 T' @5 c- C" A
" F: _) A4 b1 @8 d( @$ ato setup-plot3# X( O  Y& U" v! l8 f
. T  I* ]$ O; K$ P. F  |6 D5 g* {
set-current-plot "Trends-of-credibility"

$ q& K8 ?5 n( ~% X5 x5 c8 e. ~9 T& Q% f" Z
set-plot-x-range 0 xmax
+ R- [& W8 p6 n1 }' ^! Q

" a" F- i1 `! }set-plot-y-range 0.0 ymax
$ k# g9 z! e  E5 X0 m5 P
end1 r8 |! W# C& B
+ `& F0 _, m, q
to do-plots
  z8 q  r# [7 C) jset-current-plot "Trends-of-Local-reputation"! D. P* F8 ^6 ?" |2 g7 X- P8 Y
set-current-plot-pen "Honest service"
: v" C- m" r2 U# K' pend
- n$ O- X: r6 d4 H. G) R9 M( n% }
2 y+ u' z: `2 s& G8 u8 j$ E[ 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.
" M: V) w* E# X+ I! f& |7 z/ b' i/ R, V- c; ]9 u& @  m
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, 2026-9-4 05:07 , Processed in 0.024168 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