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: 11621|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:
3 c$ Y8 M# X- xto do-business 1 `* W! X! I7 ?9 C  j2 e9 x
rt random 360: {3 u- l; Q. r. G
fd 1
( Q5 H% a) T) j; z* i6 D' x, m ifelse(other turtles-here != nobody)[
$ C) G& o" u/ E! c   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.
9 ?2 {3 A. J0 Z: O' X; {   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% X2 ?0 h# J7 ]+ q9 r   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
2 Z& p' }1 t( @3 C. I   set [trade-record-one-len] of self length [trade-record-one] of self% @( B9 |6 {5 b  j
   set trade-record-current( list (timer) (random money-upper-limit))
, L) a( Z8 r; N# n1 Q  K
6 N* b4 x$ |5 \问题的提示如下:
* f" @$ c9 M. O! x( u( D9 H
- G: }9 J2 u& k. R6 Kerror while turtle 50 running OF in procedure DO-BUSINESS
0 ]. d4 t2 {3 Q( w. _& @! E  called by procedure GO) \6 h, y& c# \' n, E3 l7 h# t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 h! o/ a( Z- ^7 r( t) j
(halted running of go)4 z1 |# C+ C0 K- N

% f0 t$ f' \; n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~~
# t% A/ `6 [. g2 W) s0 ^/ o' L  Y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
9 j% [7 v0 v. A2 T# k4 Zglobals[  D: a4 N; L, B( n
xmax
! X) ~6 d+ W" \% T3 p; I% S  `ymax4 N2 k3 H' Y3 `0 g
global-reputation-list% W& ~" ^2 u- [
; v  [9 N' ?3 x
;;
每一个turtle的全局声誉都存在此LIST
/ R9 m& `' m0 P( H. Ocredibility-list
' I9 ^3 u' t. i;;
每一个turtle的评价可信度
( l" I7 F$ H! ~; J' o4 chonest-service
; z3 F! B5 r, L7 U! X$ Q  J; Runhonest-service/ @) ?! [. n" l- N' H
oscillation9 E- P1 ]0 R4 ]3 U) o7 ]
rand-dynamic" x* Y+ L! U' ?1 R
]
6 W; f& N5 C  h* s! j) K; ~) J+ H( |
turtles-own[& F' U. Y! r- t
trade-record-all: Y/ A" }$ G2 N, [  M# w
;;a list of lists,
trade-record-one组成+ m, s; M6 r- H" d
trade-record-one
# a6 }6 I. u$ m# T9 r' ^$ o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 V" }. ~( {% u' K
1 g7 o: @! v% L;;[
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]]' h+ P, c7 ]/ D
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
9 S0 B4 m( s% wcredibility-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 l+ g: D( b* _+ K
neighbor-total5 U1 x8 X2 h7 r0 q, k
;;
记录该turtle的邻居节点的数目
! N8 D2 a8 J% R; Ztrade-time
* ?  U6 c* x( z. s" p. T. H;;
当前发生交易的turtle的交易时间- f' [1 i) I9 c
appraise-give
9 Q' e$ `5 G+ j;;
当前发生交易时给出的评价/ P! B$ Z' S  G5 ~' g8 c& s
appraise-receive
6 j, T; U+ W% Y4 B2 k6 E8 N;;
当前发生交易时收到的评价! G2 U$ B6 P0 |+ O
appraise-time
8 ^5 Q5 x" N! i' p3 J# V6 D* P;;
当前发生交易时的评价时间
" W- ]- \( ]8 j/ j2 Alocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 d+ R, {: _) P2 D, \$ ytrade-times-total! P% P# V. _9 e
;;
与当前turtle的交易总次数
% Z' c+ u( l+ J; O7 ktrade-money-total# i4 t( o$ G8 |5 I! v8 D
;;
与当前turtle的交易总金额
- l* U; z& W: P+ T3 B& \2 S& Jlocal-reputation. g9 L& K) D+ r; J: A
global-reputation
8 \* J8 B+ B* [! Tcredibility7 o) Q1 F. I) T, g- H- J
;;
评价可信度,每次交易后都需要更新+ U$ L8 L# P, [) c6 ?
credibility-all; ~# V- H; R9 D
;;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  M- r2 _4 f  }) w
6 o& U, q) Z' p8 k& _6 H
;;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* G' o% x5 Q4 P) h
credibility-one
  f. F$ }; U( M2 W% D. };;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people5 l5 D$ x3 e- q& ~* a9 }9 C
global-proportion* V5 p# H5 r1 m( ?. g
customer
+ ?) {, P. W: F0 R$ H+ F# S9 gcustomer-no
( k  f& k- z, {trust-ok9 d. B& T, m7 |) [  a( L( X
trade-record-one-len;;trade-record-one的长度5 W& _, P  ]8 Y
]
( L& v0 N$ C9 l$ z0 G, ]9 e( n; b5 i; l7 c! c! A
;;setup procedure
6 F- k+ R; n3 u& a. K: x7 Q
) Q: m$ m+ \. z+ \. I7 k& v3 Dto setup
, h, F! @  T0 Q& @1 `4 [/ X
- u+ w: s5 ^  J7 H; Y" hca
1 B3 G9 T2 z% A. y2 p, {( C
7 M* u' V1 K# Z7 ?1 w
initialize-settings

2 ^/ @9 t! n0 h
# N9 p: V  T) ~; _* \# |. s! T  lcrt people [setup-turtles]

9 R) P* l# B& t6 `" W/ n/ T' k: J5 D- L! J  s3 M8 Y% H
reset-timer

. C$ J0 x% I5 P! U' n6 h0 `4 V/ U0 ~3 k
poll-class

3 z4 p+ l% `* `. S. _: P3 l9 e$ a- g. _& H) j
setup-plots
' w7 W, m3 J" S$ x) `" R
, G3 k4 }! w2 x
do-plots
/ R. [" h& v! j" [0 |: l4 J! y& N, Q* ?
end5 j8 J( s6 u9 g* P3 d

+ H. r' k5 W3 Q4 R+ A$ Xto initialize-settings
% o5 H/ b: S2 i5 `- p3 f1 f' W: J8 t* [+ c' C
set global-reputation-list []

/ R' K4 G/ O- i( d0 M* o0 c6 A* j
6 g5 w3 y  i3 u1 r. U, t- Vset credibility-list n-values people [0.5]

6 C" w# t. x$ ~1 W$ u
' I8 m( z  U% v: s4 Sset honest-service 0
) m6 \7 u+ d' O, J* X6 s0 C# n% Y" o

9 C. u1 ]8 O! Fset unhonest-service 0

! }) _9 O+ Z. I
- }' w3 U- R5 k. k( r" |) Mset oscillation 0

% H% s8 B1 l' b9 v) _. q% i4 F7 _( _/ [6 w# B
set rand-dynamic 0

! e: }" M( A5 L& zend! \* r. P# H- @, v/ R9 o/ |

8 \$ ^# t  T; ~$ Gto setup-turtles
$ V( T, o7 k9 f! ^  _, G! i* Yset shape "person"
- p+ n% N0 V: s, {setxy random-xcor random-ycor% p/ H! p$ q; i! }  E5 `6 A$ m' F5 Q
set trade-record-one []
+ q, ?- t) u' s1 r7 d- k* k9 G" M- [

, w; ^  N" m( O$ X% bset trade-record-all n-values people [(list (? + 1) 0 0)]
4 V/ p2 t1 Q# p& [1 h
& e! y) k0 x; k5 b
set trade-record-current []% R( G2 M- _0 g9 i; G7 _$ l( S7 ~
set credibility-receive []+ y1 r9 s' |# q+ ]1 T
set local-reputation 0.5  Q& a, {: N! J& M
set neighbor-total 0) N5 X7 l3 Y- l2 \' j; C' `
set trade-times-total 0
: A4 x; ]8 I+ o6 \$ nset trade-money-total 0( I( u' P7 I% }* ~, M! J
set customer nobody
# K# C: m0 O5 D2 gset credibility-all n-values people [creat-credibility]
  _! x4 D& r& g$ J: m* Sset credibility n-values people [-1]9 O: M* n9 u; t: h) Z0 \
get-color
: J2 g. b% p- R% J( c
# |' p" R- Q  B: W+ v5 F! Y
end2 f' F" A3 l) O- ]- a
  _/ Q* ]' R: R4 [& C
to-report creat-credibility* D8 L/ z; C4 M! j6 ~( H
report n-values people [0.5]. x/ y8 l& i  [$ R( q  N$ n
end6 i' [# [: i. t
5 E/ |! P- e# L2 _3 Q' p6 E
to setup-plots
1 y8 b8 c3 `, @) {
5 Q. z" ]; o' O2 K7 p- vset xmax 30

( e; v1 x' _$ p8 m) Y/ x1 Q# r; S
" `2 E5 V2 s( A& ]  _9 G6 [set ymax 1.0

6 r: `, n" \: Z% a: p$ ~
0 v( h$ R' C9 G% _* R5 J9 m8 F+ l2 Nclear-all-plots
# B, ~: N! g* T; t% q/ ~* {, ?
' e3 y% X  u" Y3 [; i- b9 h
setup-plot1
- S0 F& l- F& w# S3 g

  P' p5 L- y" ?: H1 Asetup-plot2
) O/ Q+ U3 k. C

4 Z* G. D9 H& o( p* A5 ksetup-plot3
7 W/ T# D, M1 E+ V
end( P9 d0 }1 E. H: Z  n3 v

. h7 Z1 H, x% l( @;;run time procedures' e8 ?: l4 e) x- J* c8 u
* _" p2 ]- M1 V: A- v
to go
2 P- X. U! Y: I5 e: _0 e
+ ]+ ]4 y5 d4 \2 Pask turtles [do-business]

3 l9 d5 ]6 @7 X! Q7 ]end( R5 v; b# i' E2 L% V7 I

& H$ k( t+ b- Y+ T- A/ c' Vto do-business
0 O  h) [# S( q9 R' n( ^/ ]
# h4 y) J; ~: |; w& Z' I
. ]" w9 H, j* W6 z
rt random 360

! ^: w  E% o) ~! \9 a
0 f# d4 v5 \8 @fd 1
4 L7 c: ^# j1 m3 B/ ^
3 I1 e: X/ W* j3 t' p3 B
ifelse(other turtles-here != nobody)[

. @0 y3 g" F' y% D$ D7 E
' J6 b: m0 {7 g$ Z: N! rset customer one-of other turtles-here

' T. d+ n0 t. P, }" ?  a4 Y9 f- Y5 F+ S" X' p7 O. b
;; set [customer] of customer myself
4 [/ A+ |3 o. s- E2 N  Z3 I
) W* v2 I* `1 |+ S
set [trade-record-one] of self item (([who] of customer) - 1)0 @' T: y# L$ I( d; |2 F
[trade-record-all]of self
9 {; V. W; k# U;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: U& N8 ^' U3 j+ _, d
% J- H5 Z; @4 B( N; [8 ]7 A  i
set [trade-record-one] of customer item (([who] of self) - 1)
$ m0 g, P+ ?- ]# u' n- F[trade-record-all]of customer

# }, d' W; V$ e( h( T0 K) f1 W' ^# P7 g7 b: Q
set [trade-record-one-len] of self length [trade-record-one] of self

- k2 ]0 A$ G8 l1 s
. a; W2 A1 B+ n# ?1 A# }set trade-record-current( list (timer) (random money-upper-limit))
, R# r% ?. U! w# _
! f2 C4 X% G$ C. `( @) v, [: S1 |
ask self [do-trust]3 u0 K7 O- s( n! ]* k* o- Z
;;
先求ij的信任度
7 y* `8 }- P& c0 `6 @+ y' J6 P, o( f4 W) s7 o: N5 v& g/ P
if ([trust-ok] of self)* i: S9 m7 H" ~; B* f
;;
根据ij的信任度来决定是否与j进行交易[
. M0 a% T" t: G; Yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* w( ]' B" y1 t! O! b

. z; }; E0 z9 x9 x( D, P, x; u2 z! Y[
& _0 N  A" P0 Y/ g

: m9 g. N$ g1 U" d) m, {: Tdo-trade

  d5 h' B: p! D2 [, w$ o8 r/ s1 U4 J( A4 x- b2 W6 K/ Z1 u
update-credibility-ijl

8 L8 E$ p$ `% {% `+ `/ b0 k; Y: G/ G/ _" K/ W3 ?$ V+ E
update-credibility-list
: @0 ?' z& P2 ^+ k3 A- D. l

$ L3 n0 o4 @- a: H5 Z2 ?8 p0 d, E3 c
update-global-reputation-list
, [$ V6 d) x& u: O2 [
% `4 N( s, o+ m5 b" C1 I4 X
poll-class

( o* ]! H) i3 u8 ~% G) T
4 U6 Z: Y" c" Z# d6 i2 S/ Sget-color
& X  @& B1 ]: [' e2 ^+ ]9 D# V
9 F9 X* l2 j! q% \9 I. n
]]
6 j: O! ]; Y, b) I- t
# e# M! G" Y% s6 [- g;;
如果所得的信任度满足条件,则进行交易+ D4 [) w& i" [6 ~. Y6 I2 W

( J3 a: C( Q$ T/ O1 F) Q[
6 h! O2 ?) M* T
4 `" Y' S5 N4 a$ U2 Z. p
rt random 360
% K& F5 f" c5 N4 w1 X

$ ~. P" I: E. |% |  s: `5 @, p9 pfd 1
! i. D: i9 H2 m  ^! S( d
6 c/ H$ A8 N8 f; b+ I: q5 G
]

8 d# u5 u( p  H4 v. r. n, [- I* W. R) x
end
" C: @: C7 ~7 M% l3 W
( g5 z1 ]& R* J8 V8 [
to do-trust % `" S* f- Q) h2 y$ {# j: y( b
set trust-ok False- g1 I0 u+ C" m. `5 |9 N
; a  K1 _% n: x5 ~' c
7 K3 a7 F# ]) S. }4 x
let max-trade-times 0
" f* r3 C* v$ M) k5 F+ `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 G1 u/ u6 x4 a# W
let max-trade-money 0
2 t% n" F- `8 u( v4 T8 {9 }9 _% ]foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 T) D. N8 _% S& i: p( ?( Ilet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ s% W  @) f6 }) I0 z! j
3 C3 Q5 t; ?  _: T3 K+ X  B

. a( q+ b) o* q* E6 Eget-global-proportion1 M; u, Y" R1 c. O- I4 q- A% a0 f
let trust-value
3 A/ U* s8 K" l! alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

+ D( H+ _2 x" M' |( M# r4 Lif(trust-value > trade-trust-value)/ U) w1 U0 h7 C, C, W& O
[set trust-ok true]
$ Z& @5 W* s0 h& @3 a2 Lend! ~2 ^% A- f$ `/ f# z; n! E. N
* E* `+ _9 c3 u' Z+ U6 [; b
to get-global-proportion
: \6 y/ n) |  m! i6 J6 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% l6 k2 ?+ o/ I2 ]8 s! Z: u[set global-proportion 0]. g4 @/ k5 V" T) d7 O+ h
[let i 0
& J9 @: q4 V1 i; q8 klet sum-money 0+ w9 q/ E! C, l4 }+ V* u
while[ i < people]
3 y% ~: }8 e0 U: u  P[. L* ?( o- E* u& w
if( length (item i
. J+ y2 e- @% H$ M* g[trade-record-all] of customer) > 3 )

: i& d" ?/ C  o[
8 e1 }. {) L" O8 Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( V7 a( k4 Q7 w1 {8 Q! U6 Z7 o]
6 l. s; a: Y( m6 ^: L]* a# r2 Y: Y( {2 w  y
let j 0
$ g$ R' K* |3 `( t; Blet note 0$ H* A& b. z- a& i0 g7 G7 o+ D& m
while[ j < people]5 N  `8 S/ ]% y# Q  Y1 |
[! t( ^( b  \6 F4 n) Z. e
if( length (item i" o7 m1 t# m# B8 K6 ]/ ^" T
[trade-record-all] of customer) > 3 )

2 f8 z/ V* {5 Q& l2 Q[4 H0 d0 m1 R9 `
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ K- r  m: f0 D- p; K! N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ k4 o9 v* P4 m; K+ t9 F0 p9 t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
4 x2 Z9 c# ^, v]2 m  B+ ^0 K% B( i- q, h
]
: s& [% U+ J* \% @" B# Uset global-proportion note* [# V: _! F6 t( C$ E
]
5 F& i. R# J$ M6 Y' fend$ p6 f+ U3 ]5 s- k5 l1 |+ o8 b7 i
4 r$ V: B. O% |$ u, ^
to do-trade' {2 R, j& ?( y7 B: p' N4 I
;;
这个过程实际上是给双方作出评价的过程" Z2 G9 [. b+ u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 e/ {9 g+ Q2 e2 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价+ u. f8 l: k, g+ S/ {
set trade-record-current lput(timer) trade-record-current/ Q! {! _5 o. O* c2 `
;;
评价时间
, ^3 k! e; E; b3 iask myself [
+ g* `! j* D) uupdate-local-reputation$ H  ~( e- M/ K. M  s4 k9 B. ?
set trade-record-current lput([local-reputation] of myself) trade-record-current* T: u, P6 _% _1 o* ?1 ]8 N9 U8 l9 w
]
. V8 O" \; B" x* h  f5 k; Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 k9 y' G9 s0 h9 r# [9 i, o
;;
将此次交易的记录加入到trade-record-one
4 S' b2 U: n6 o5 N1 i. Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 R, L) U& ~, b9 w% q
let note (item 2 trade-record-current )$ ^  Y7 l0 b( O6 t+ _( k0 w; o
set trade-record-current
' B) _+ @. x/ O5 g(replace-item 2 trade-record-current (item 3 trade-record-current))

; z; [- p) n7 oset trade-record-current/ S% n8 p4 P' \# A
(replace-item 3 trade-record-current note)5 |+ E7 O, h; e' n+ I' m
6 k/ D  P# P$ V% K# T8 r
$ F& T6 j! N- r& D( O. B7 g
ask customer [7 f+ n- G& Y* B  b  \; r
update-local-reputation, d; J/ K7 @7 z  l  f5 T
set trade-record-current
  r3 `7 ~" o) P, P8 B6 b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 ~: G( b& o) T% J$ P& y; s$ H]4 ?. Z  _1 [* j# I6 |3 T  R) Y. K
( y, R( A8 u; d# Y, L% H
. c# I+ \; Q; X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# ]1 A' Y, i) L% |0 u/ J! _( ?

: a! S( R1 G8 o; s% s. d6 o9 o1 Zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& M  M8 K4 e- `7 j: `# F
;;
将此次交易的记录加入到customertrade-record-all
* T/ S% O5 N" C! l* J. bend# U$ x8 k% Z- P; V

: A' y& B$ H$ V4 h! V! k8 n; t$ ato update-local-reputation; j  |0 t" a2 G: [
set [trade-record-one-len] of myself length [trade-record-one] of myself' w1 x: B8 F5 P* ]
& X6 [- b0 }/ I- `0 m0 Q+ [  l

/ m; j: E% C# a;;if [trade-record-one-len] of myself > 3
5 @' j  a' \7 \" N9 s8 i4 a- z
update-neighbor-total2 ^/ t. ]5 W3 P1 ~( n
;;
更新邻居节点的数目,在此进行
" z1 a/ Z$ s5 J4 F& P0 T3 K% ]let i 3
: o$ W& N3 ^. U# tlet sum-time 0
$ F9 P+ N' a  x" ]+ l# C( Twhile[i < [trade-record-one-len] of myself]
$ X* i1 G' N7 ^7 [2 N[
1 b6 @& Y3 A, B! }) H. i. Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- V+ X  Q7 {/ j7 H4 O7 n* o  H0 ?: c
set i! p7 t& U& r2 D9 T4 U9 k
( i + 1)
; K" n0 d$ d$ |7 \/ b
]
6 P. M2 Q  y' {" |( o# ?7 }let j 31 o% f  Q  T, H  K0 p
let sum-money 0/ d" M$ `. y% l2 ]; V0 X  I
while[j < [trade-record-one-len] of myself]; ~/ B) V" _( f9 Q; B/ b& c/ _
[9 X% y' ^$ r, D# ~1 v8 h
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)' j! @3 ~2 x% U% C& K
set j
/ R. z% M. ~" W! A" j/ b4 x( j + 1)

, L; z# m* `) x2 d5 U  M2 ~]
4 o9 V" Z# n& P9 I% m3 Wlet k 3
* b" R7 u0 U6 _0 J7 n: zlet power 0
- P& V: o* E$ ]! f. Xlet local 0/ w  e6 K9 I9 y: `" l- W4 n
while [k <[trade-record-one-len] of myself]
5 G, K) T7 V9 }6 z[
6 D5 ^+ V" x+ Y* Q$ E1 xset 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)
* j; O' y  ^( g% r9 Rset k (k + 1)
" q9 ?# D' s$ A]2 u# Y" ~2 F0 o# t4 M
set [local-reputation] of myself (local); M; j# J$ u% [  C8 |- [- Y
end
: s7 {; _2 ~2 j4 G. X9 W
2 ^' j# |, J3 K/ c7 e7 Pto update-neighbor-total
" c" R, Y- U4 E( Z4 a' ?7 X. x9 y& X3 Y, B& h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# z2 S+ T! w  t2 I" A9 `6 R! C* \" J8 R, W; n7 m) V

; w. I. ]4 t; g' ?end
5 d- X: V; v. _9 [& K8 z# O' H( ^0 a3 @) K7 ^
to update-credibility-ijl
3 C  |9 [9 n9 f4 A! a
) p0 O& A; l5 F6 h& Q; {1 Q7 E;;
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。, w9 M1 u) p( J7 J. i- M
let l 0! d6 w2 ?' I1 [, d, v8 x
while[ l < people ]: Y/ @6 i) j1 X1 g9 G! i3 ~
;;
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$ L9 N  M/ P$ G4 f" \' R
[: e0 h( F$ a, x" I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 o) O' j, A% m; T5 |6 w1 _3 K) fif (trade-record-one-j-l-len > 3)
, t9 Y  k6 n9 y6 E[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 ~+ k  d& B5 }, a
let i 3
3 x) x) ^+ \, ]- J% Y8 u& J) ?let sum-time 0
; ?/ }/ t% e# Fwhile[i < trade-record-one-len]+ p" K# H/ O  ~8 P) ]# \
[
( a2 k4 [8 h  Z6 @. j1 E! O- Mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ l% r8 o1 j2 k; s
set i1 G4 y1 ~2 \$ I3 s- i
( i + 1)

" e' y1 |9 G) c+ o  [" y% r3 D0 D]
+ a: K$ K+ G; e- Q8 h3 `let credibility-i-j-l 0
0 b* e/ e( C3 b' A; n;;i
评价(jjl的评价); j9 e& a6 B) ^9 [; e( F0 W
let j 3* f+ M3 n) U) x: t* b! N, C
let k 4- o5 n% l; e* n( Y- `2 I- `! }
while[j < trade-record-one-len]
/ B( P# L% S* o2 `4 O[" {+ |- ^" s7 c' o4 U
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
$ x. O! m2 [& P: cset 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)3 g* D: l/ W3 J# T
set j$ p- r) ~, A9 i
( j + 1)
4 D, B( L; n  }2 M% V0 a# a
]! M* \9 ~; K. w1 Y" |: j/ 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 ))
$ J4 K" a% K. e7 f, y2 b# q
' _/ M/ A8 j0 L: c
! d. a# p. l4 J9 H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 @9 w! j  {9 @. @/ _' c8 [6 Y;;
及时更新il的评价质量的评价
3 a2 w- `2 k9 O. Aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& o7 J% \/ Q+ Y  T0 a6 G6 R9 X9 W
set l (l + 1)
4 v  U. h& l, K2 @+ ?* j$ |# s]/ y$ z7 G& o% k# n# ~* a
end
, I# v5 n+ x& |& P
$ f" C' k8 M5 Uto update-credibility-list
+ I5 V' t" g9 z% B1 Xlet i 0. C: }+ p9 j8 x
while[i < people]
+ }& K% o; ]4 J% D- o. X[
4 N+ J' J" l! N& b% |4 P0 G* Tlet j 0' ?! a+ P1 T3 {+ C; X# n' F0 `2 W/ _
let note 0
# c! X- C8 S9 b2 slet k 0* D5 b6 X* a9 [3 S
;;
计作出过评价的邻居节点的数目  Q0 V: Q- i0 z, c4 j8 T% J8 K
while[j < people]* F2 f& p  f  s/ O$ C: B( N* x
[
$ j0 J2 Y; c2 ^0 ^/ ~5 |7 m' jif (item j( [credibility] of turtle (i + 1)) != -1)
: N: `; o9 ]! Q7 D;;
判断是否给本turtle的评价质量做出过评价的节点
( [- o3 F1 M0 K% I[set note (note + item j ([credibility]of turtle (i + 1)))
0 w* q& z# ?  C( f4 q2 _0 d;;*(exp (-(people - 2)))/(people - 2))]

! I, q- _) E; F. t/ Mset k (k + 1)
/ l3 U1 Y# j' V/ l]; K' Z4 j  {3 N8 w- F
set j (j + 1)
8 I  d/ |+ x! u) H3 S0 Y8 S]
) \: r7 R) J4 k" w7 W! L% Cset note (note *(exp (- (1 / k)))/ k)
. M8 f( H4 }  J1 f: Uset credibility-list (replace-item i credibility-list note)9 I+ F9 s9 z# V# }
set i (i + 1)6 f& t0 \% g1 N! x2 B$ ^
]) |, p9 S% t1 l* j# }
end
# v: r# D( J1 U& S5 k$ M4 K" ]" i/ X0 M+ ]: g# X
to update-global-reputation-list
8 f+ n! z2 z, l  T, }* u4 P8 Elet j 05 I8 G# [* C) l
while[j < people]9 o& v) a  E' F+ z- o8 @9 v1 v
[
, M8 [. V2 k4 \& D  o3 \! [) K7 Slet new 0- [4 S0 k$ O7 x- H
;;
暂存新的一个全局声誉8 M# q5 @( L3 A" @$ |; J
let i 0
, k+ Y* J9 S* ]; R; ulet sum-money 03 k8 ^4 ^4 U, n* e
let credibility-money 0, Z/ U# P" E) w4 B, H& T
while [i < people]
) U$ R% h" h% O/ D" M[" b# r8 z$ B, z, z$ `7 f% Y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 s+ t+ I! u- p! z: vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ F* u" V) l& _8 ^# K
set i (i + 1)
9 ]& T' K4 ~' ]7 C]8 l- X6 x  Q8 _, O: r9 t
let k 0' z" n  Z1 m6 z6 t0 F' I  s4 j
let new1 0
& Z) I5 z# l# B+ kwhile [k < people]
7 S; C. a& L0 B9 J" G0 g[2 L! R* Q/ z; x5 J
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)! E7 L1 _8 J+ [, H
set k (k + 1)" Z3 |5 ?2 e6 L- g) q
]+ V0 L/ Q4 H( g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / Z2 h5 g7 {" |3 y9 A
set global-reputation-list (replace-item j global-reputation-list new)
$ F/ H0 v, I/ z0 \9 D6 H; Vset j (j + 1)+ ~/ N5 ?: r' d( D5 e; p' D( U- {
]
& F) L5 u8 `' h+ aend
+ I3 E1 }2 Q+ T9 z
  h* J9 y% b7 A* n: \
. g6 C0 ~, F" A; g
" q- O/ n( T/ Hto get-color$ `5 q# b" j7 l1 f. E/ J

' ]" F8 U! G7 f: j. G3 U5 |+ Wset color blue
1 n4 {9 g; _' T. W
end
! V. a- \  B; A$ ~6 W1 G6 Z" G. Q8 w. j
to poll-class
2 Q+ a/ J, c) x5 y- oend
5 c- {7 Z- e  R% N! {) [
( L  _% ^6 h# y, ?8 _9 t0 Xto setup-plot1
6 A8 o1 n3 z4 g4 o! X, s8 g# z7 d, s8 z% i
set-current-plot "Trends-of-Local-reputation"
. B6 w8 ?& V, s: V$ t9 W! s  h
% J7 L. v# t$ ~3 F! @. d' X( N$ q
set-plot-x-range 0 xmax
. M1 C5 m- J! t
+ d3 E3 T, T' |7 b4 W* S
set-plot-y-range 0.0 ymax
* c/ I4 D- L1 p' X
end& Q9 B4 @7 l% `9 ]" B

" d, Z: i# [/ T) E- E' Yto setup-plot26 c- m0 L! ]0 q! k

; }7 G; K9 @' y4 |9 J3 o: qset-current-plot "Trends-of-global-reputation"

0 N5 h6 f7 ~/ D! U6 J0 T" }, t1 m% L* \
set-plot-x-range 0 xmax

3 ~( V* L$ A" w' d% g+ D& E8 K) H' ]8 I* o" }9 F  A) K6 b
set-plot-y-range 0.0 ymax

2 X' m3 U9 t6 v) M6 v# Tend& D" ?" B) P- g
  \1 O# q9 U3 @5 e
to setup-plot3, v! S5 v; s8 Q: }# h8 x5 C! w
! A1 B& Y3 p3 ~$ \1 w
set-current-plot "Trends-of-credibility"
  Z% O: ~  \7 [) k0 a% W) z" {) g0 z

; Y" T# A# v( _- h3 dset-plot-x-range 0 xmax

3 D  ^6 M- C& ~" p0 t
+ y: v5 e. ^; H+ [! o5 ]& u& Dset-plot-y-range 0.0 ymax
- W. P5 T. G5 z9 j
end
  ^. v5 Q: B! ~+ H9 [5 D
2 }1 b- K0 W& yto do-plots: u, U6 L: q3 h, l8 x0 {" \. J
set-current-plot "Trends-of-Local-reputation"4 G4 u. Z. r) Y$ U' c" }, ]
set-current-plot-pen "Honest service"6 R7 u! n. g& c* E" p3 I
end
5 @1 d; z, w" o2 d( g' x8 Q3 y, n6 u; @6 Y
[ 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.
8 `/ p" b' Y8 }* ~
' c( m0 U) e4 X' P/ |; e这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

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

运行不了

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

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-1-25 23:50 , Processed in 0.020155 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