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: 18290|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:) v/ l+ I8 `  T( c/ c, D+ O. i
to do-business
7 h# b# P3 H3 r2 o2 n rt random 3603 v, N& T3 V6 V' u# ~/ O
fd 1
+ b) ~& d  a) e7 K% [' Q! c, _ ifelse(other turtles-here != nobody)[7 K% C. m9 s; g
   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.
8 @  B/ r! V" n! Z6 ~9 Y, W+ k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( g* E+ y. v! I1 `2 ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 o8 f+ X' i' F
   set [trade-record-one-len] of self length [trade-record-one] of self
; S3 @% R2 i  K8 @5 J   set trade-record-current( list (timer) (random money-upper-limit))
0 ^* J, v" c7 ~' j$ x# Z
4 n! d# _, y! @; @3 n  `问题的提示如下:
+ U0 d! m2 w& ?3 G$ `* r6 G( N0 {# [" H5 g; B; J: a0 G
error while turtle 50 running OF in procedure DO-BUSINESS
$ g& Z; U$ X5 J' M2 O' g  called by procedure GO
# ?7 \0 {7 I) X6 P, kOF expected input to be a turtle agentset or turtle but got NOBODY instead.) U; C0 [0 i4 I1 A9 w+ `% C
(halted running of go); q0 Y: w; W  ^  K# k
) j5 k  G' o( S: B0 \, 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~~4 K) V+ L: Y/ N7 v; q8 N6 m
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
, E0 X1 f3 g: Y/ R' n& ]8 v# cglobals[( s3 [& ]9 L& h: o& I- B
xmax
! y- `  }2 M+ w* u# H( p5 [ymax# h# s$ U( X& ~
global-reputation-list2 f' E. c7 p$ @$ g$ v' b
6 y* o7 b1 T5 r0 Q. v( r7 `3 }
;;
每一个turtle的全局声誉都存在此LIST
7 K) ^7 F1 b$ p4 {credibility-list$ B' X: @% z: {6 Q6 r
;;
每一个turtle的评价可信度: Q8 X7 F- X, w, {
honest-service
$ O1 @! R  g! f3 E2 x% Vunhonest-service3 a) L$ K2 N& A4 }% I: `% Q2 ^
oscillation% O# H. O2 l# T! B( G7 l8 S$ C
rand-dynamic
6 M9 l) @3 N; ]]) V7 U9 p! M) J% y# g0 n
7 P9 E* U  K0 P3 n" c
turtles-own[
6 R6 e( ~1 r( ~9 ytrade-record-all
9 T" V8 i( U4 _2 R* m% g' N;;a list of lists,
trade-record-one组成
) j& ^* f. z! r$ L1 y/ Btrade-record-one8 `$ E' T' x# u  f( \0 B+ L
;;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 p& k+ K- X" W+ S; `6 D+ A( B$ E! l3 v/ c$ @
;;[
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]]
2 {) t4 A! c( R& L0 Utrade-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]
2 m( I" t* |# S% l5 d2 U) pcredibility-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list0 t2 G, t% H  v: p* C; t
neighbor-total& {5 K7 b( `* q6 h
;;
记录该turtle的邻居节点的数目: p$ t/ A, G" n* {. L
trade-time
/ n+ A% i8 ^& V# U/ F- O;;
当前发生交易的turtle的交易时间( S  E0 v' d. V* |' ~! I1 V- h
appraise-give- d$ q5 t* Y% y
;;
当前发生交易时给出的评价' m# d/ B( D# x' B1 S
appraise-receive& g% g! T  t6 Z- }
;;
当前发生交易时收到的评价
/ E/ ~1 ]# t9 T# Tappraise-time' g9 L1 ?: p7 M7 k
;;
当前发生交易时的评价时间: ~/ b  V. S! [9 c3 |: l
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 V+ N( n' w( I# F  X: z9 P* Wtrade-times-total4 x1 g. e) Z4 l/ o# C
;;
与当前turtle的交易总次数* C4 f, f9 v& B4 M4 I- z
trade-money-total+ A/ G( c; B3 G- x5 b% ]1 t; D- z; v
;;
与当前turtle的交易总金额) T: b1 S$ P: m. T
local-reputation
" X" ?' s' r" s: oglobal-reputation3 {! ?: c5 v3 t* b
credibility
" X, V. I) B: i" O;;
评价可信度,每次交易后都需要更新
& j. n) [" X" G( Z  k5 Tcredibility-all$ @2 q5 w$ E) M, q' X. \5 \
;;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
8 r8 J9 E  p9 i) h/ P& @$ m$ w# J% O2 H+ p' w
;;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
# B" J9 f5 a( Fcredibility-one
) @$ _/ l# H* Z8 K5 o+ u;;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
2 X  L) @' I5 `% k$ ^global-proportion+ ~( K0 v7 }$ k1 \$ H, O& E) g
customer
; {' M" ?/ N' ]3 H- fcustomer-no/ D0 K8 Q3 Z# \
trust-ok
$ H+ X3 O# t) L, D- Ctrade-record-one-len;;trade-record-one的长度0 M" J& Z8 I- X" G  i* e0 L1 p
]1 Z& ^  r5 Q# Z5 ?) e

: n+ q6 H3 `* k- G;;setup procedure
( K4 K/ @, `5 D2 ]" @  K
$ L7 X$ K" q$ w0 ~$ C3 b; c/ {to setup7 X6 \! p' n. Q

, ^! |' Y$ X- P5 s0 w. Kca

$ [; J, l; I- f1 s
1 I9 n  y; P8 c5 F' c/ x2 {) h* Oinitialize-settings

: D0 n6 d& t* |  v) b
3 i# r' M' B7 mcrt people [setup-turtles]

7 s4 Z5 @" j+ K* v7 }& N- a5 _2 W9 S- L6 r9 g
reset-timer
% l. S+ [! g7 j  N5 F( i
$ L  J, f) ]8 o& ?
poll-class

* Z, G/ `/ h/ a/ d* J' k' P' }" ^+ U
setup-plots

6 u  u! ?6 J1 K0 ]! ?& U8 s! y$ q% ?! r
do-plots
. B3 U" Y8 g) D( W1 G9 P
end
. Y3 ^3 e! T3 }. _: O7 e7 e) p  N2 w7 V+ M
to initialize-settings
+ _" q, d% t; T1 }4 s
! p/ \6 T- u, Q+ Z' j4 Rset global-reputation-list []
( o1 X, Y9 q" Z3 A* @3 t
; N8 E8 i7 ]7 j! a
set credibility-list n-values people [0.5]

# y2 f6 ?0 z$ z8 A3 _; m3 B7 `5 Q! {
1 p2 v7 \/ C5 E% j# Tset honest-service 0
/ h5 E3 {3 @1 C0 {4 r
2 K$ D" Q8 S7 S
set unhonest-service 0

9 T* X% i; ~9 n# X( X% M0 s* O) r/ R9 P
set oscillation 0
* N" o# P/ z$ D9 z2 V
; _( ]5 G6 A4 D+ g+ E
set rand-dynamic 0
% n1 I, K# l- r' b- h! o; |* H& A
end
1 o& J% S9 U1 @1 H& r$ }% [
! Z3 L, r9 c( Y2 Eto setup-turtles
$ {$ F4 Z' j( e! y* Q1 wset shape "person", [" V0 _9 ]9 {6 x. I8 P3 L- a' L- s
setxy random-xcor random-ycor' V. }8 ?7 @  R  X
set trade-record-one []& e$ h0 H0 d+ }; Z

% @5 z1 }. k6 B% Kset trade-record-all n-values people [(list (? + 1) 0 0)]
) I; @4 d# N: u, x9 x

5 v& T1 e- D% \3 b2 cset trade-record-current []0 \2 ?$ J7 `+ c* q$ A1 Q
set credibility-receive []
6 V# c9 l$ a; c, bset local-reputation 0.5+ e8 G5 x& e: o" @
set neighbor-total 0& i' u+ U# K$ v2 S0 S+ I, C1 D/ \
set trade-times-total 0/ {9 C3 M7 u* w. |0 N0 U$ T
set trade-money-total 0
  F& i0 K5 z4 U4 S/ vset customer nobody9 U# Z, l- T, A) T2 d  n
set credibility-all n-values people [creat-credibility]0 K( j" M7 ^2 W( z9 @# B7 P5 n) J
set credibility n-values people [-1]
( ]' ]& D1 @' ]6 o5 }get-color, D. {, d( Y2 F2 ?, b( X; W) O2 k
3 h( U" \! `- [) K9 x
end
1 W9 i' X) n( t$ w9 e4 U7 h" P* r) Y) Z8 q3 ~- ]  s
to-report creat-credibility
( _& B" v; u: X/ F2 D5 K8 }report n-values people [0.5]
7 I2 ?" C4 [) {. V9 Y2 hend2 P* I0 }1 r6 ?! O! u( Y

4 W% M3 I# |/ X* G2 U$ @to setup-plots, Z7 s2 L: |0 |1 F/ b7 Y! _
1 Z  A9 \: E, l" l. g7 F
set xmax 30

" o  L8 A. t% K4 C+ ]$ K) A2 ^" B+ n% ^7 z8 r
set ymax 1.0
, |9 w, D+ H( {3 s) _9 J' `
1 ^0 f' S2 z' J1 K
clear-all-plots

+ o; J9 p% W1 J  W4 K
. G. f  e5 {+ {( W1 W" e- v3 p4 b0 osetup-plot1
) D5 _/ g4 f; H% {: R
- {! i) X9 {$ l4 ^) X9 Y
setup-plot2

) z- y7 M- g# W* l- R( ~8 E7 y0 L$ v; a4 q/ }  ^
setup-plot3

# R& i" a; i* \end
5 J1 N5 Z2 M4 \& b& j& F1 U
4 l  J5 b) O: p( Y;;run time procedures  ^9 p1 |9 M4 z( `' G. J
1 p4 z; }! n  e3 w% p
to go4 L5 V- W) [, ]/ C$ m- e

! V0 _8 f# c8 S" Gask turtles [do-business]

7 _  g/ ~6 ~3 c( J" O) Uend
5 L+ @1 f- g3 R# d3 U5 [
* S) X6 G& _& H: x. d$ fto do-business
, `3 L5 W9 @: x$ n) x8 [
( G# {% C" p& P% l$ Q7 c- n  O

: z$ }$ }5 V1 o. S& @+ Q- J+ C* y4 F3 brt random 360
5 S3 d% N6 S, }6 e

0 K2 u; `& q; y+ ffd 1
7 `0 F+ A1 y5 B0 Y, E4 Y( m* X
- V9 Q) t2 U: w
ifelse(other turtles-here != nobody)[

. Y0 ?7 L$ y6 W( `$ E" W6 X
' {9 O* j4 |9 l" |. V; mset customer one-of other turtles-here

# `. u' e1 c5 V/ ~, W4 x
9 G. ?4 w$ R! V' {2 l% T" a;; set [customer] of customer myself

8 @% H* b7 C. I& B9 C  z/ E! q
0 F1 V' F2 R' K+ C+ t9 S( Z) w' s! hset [trade-record-one] of self item (([who] of customer) - 1)
2 X% D0 T4 U4 ~$ C) O[trade-record-all]of self
9 m7 f% W1 {' p/ [1 J- F* `5 G" X;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. f# h) N% o5 e( ^5 v
; F  i3 v0 c' q. K* E/ ^
set [trade-record-one] of customer item (([who] of self) - 1)" @3 w1 v0 m+ U3 Q% p6 U
[trade-record-all]of customer
, {. e& k, x7 i5 M

/ |$ G3 ^8 E" P! u9 qset [trade-record-one-len] of self length [trade-record-one] of self
6 H' i5 S: B0 ^* `8 t* b* `
. P3 {0 L. v! I" m1 J9 \0 U) m& B
set trade-record-current( list (timer) (random money-upper-limit))
9 [" q% I6 _; U3 E' z4 ]- q, q, a
! {' T& [9 X1 Y) a% L! i" k7 }% @" I
ask self [do-trust]
7 t  N8 h5 m; Q/ p$ W3 c; D; f;;
先求ij的信任度
4 {# K6 z! Y+ [- }* V$ s) z; e
! X% K4 T8 e- y7 P2 ~' s9 n1 Bif ([trust-ok] of self)9 z& X1 `) z: s2 s8 i
;;
根据ij的信任度来决定是否与j进行交易[- [7 p: [9 y1 X( i( g! h5 C
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ n' W& ]4 w/ U! z4 r! c. O  G0 c% z0 J' N$ g
[

2 h& z, L( r0 E$ L& ?; g: ]  s" {. |* y2 y
do-trade
, y  y( t  P$ O' ^+ F  b

! U; y- Z3 y/ A- `; Tupdate-credibility-ijl

0 X  v% T" Z9 r
( V7 B' H$ }( f8 zupdate-credibility-list  r- y7 l) l/ _" e0 Z
2 Y; p" `. g8 T( J& M; ~

! {* d! M. w0 M; c5 ?4 Yupdate-global-reputation-list

: t# L# y3 O5 y' k$ D
' |6 A; h* e6 x$ S$ c; A  epoll-class

* `  l$ j: t1 o% a0 j4 J
( x" G& y+ r; l6 \* w) Bget-color
" X* \  H1 [8 [6 F( u8 h+ b
5 d& d6 y- n; V: J: A, J  x
]]
8 N$ P9 R0 e# W
7 P" k3 ^' D/ e7 X/ v2 V/ @5 z* ]" n) A;;
如果所得的信任度满足条件,则进行交易
! n0 D$ B2 o1 I% M3 |2 i& u3 ]: B8 y- s
, Y2 u1 g8 a* N1 O, ^2 s[
1 }( X% J6 Z0 P1 |

; W, ^3 r& Z# a+ ]: S5 g6 |rt random 360
3 e  H2 C7 P' {! ?$ C. e
& e- x1 N. J- J! l' Q
fd 1

$ v" U3 [' P4 W; Q. m; X; A/ E/ w7 Z5 M3 h
]
0 f2 Y* X% T7 {: T

# m1 N1 T3 z3 i# hend

  n/ n9 Y  }) M# E. l* G
, T: R$ b/ ^/ Ato do-trust
7 g  l2 w1 l) c  K) z% b- H' \0 [2 eset trust-ok False+ M/ L( m! [8 a5 ~2 v7 i1 c" S

2 M) L" d- f- d( l2 Z% N

- _% b0 M1 t6 B" ~- T: c% `7 Llet max-trade-times 09 a8 c" |: B7 r
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]0 {  `0 g4 d9 K! W8 l5 T5 j( m
let max-trade-money 05 z' L8 t6 b8 R/ E
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% m) b* |! U) Wlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 d$ j- t- [8 A/ O: x2 _% m" g8 C
1 R9 y: v9 \$ f
* x4 C' ^( k" N! Q3 }3 i! k
get-global-proportion* q+ O6 s. _9 {- Z
let trust-value
# O9 t3 i  s! olocal-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 V7 z5 z# t" p$ L0 A0 q( cif(trust-value > trade-trust-value)
1 ~& Z& y, [6 h0 |  ]' ?0 [[set trust-ok true]
0 M( o0 S( v$ K6 Nend+ o! |0 C6 K/ ]" i& p
7 ]/ J& T2 I7 ^: r  t, A* e
to get-global-proportion$ D! M& {0 I9 n8 N2 N3 w5 I1 C& L/ `6 H
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 X+ V: h8 q  z# J! ?[set global-proportion 0]& o( ~" W1 l/ ?) m+ x' Q0 B
[let i 0: y3 x) j: e- {: y) V
let sum-money 0) Z) d/ _$ P7 f& Q5 x  U% _1 N8 @$ h
while[ i < people]' C: G' T9 S; _' z' ~
[4 c3 E% j" [0 X- }
if( length (item i
' c$ j8 F4 Y9 Q& v- z$ t[trade-record-all] of customer) > 3 )
' o& J- d% T+ m0 _: k6 D$ _5 F. b
[
' r' c. u3 s& ]( y( W. r! _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))9 U9 O. r! u+ }( d1 H3 P" O
]
' c( C6 d* J# {$ H) N- m5 x; z3 z]6 a3 {8 `9 Q; B& }6 c+ k3 D' s
let j 0# t) K+ p; H+ s/ b( c
let note 0
  o/ x8 w) @% c( \6 I: s) nwhile[ j < people]6 N. ^/ W- @; q* _/ u; {
[2 v8 g0 w; i- k1 J& Q
if( length (item i
6 M( D: s8 V4 f. P# `[trade-record-all] of customer) > 3 )

8 q  w+ T0 M: W; r" B2 f* u[
4 D' d) S9 T! ]/ b! |ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% \7 t+ U8 \' O' S6 {[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% X3 \# b$ L5 L4 `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. m6 I- x9 U+ a$ f
]
( a& O3 j8 R6 K3 B( u" T+ r- B" u# f]1 \% K2 q* l9 G, T0 o
set global-proportion note
1 v: T* _! H0 z% p]
+ X0 Q* Y3 n/ Aend* J! t  `. F! L' R( w% u

: n( `. j2 D3 C- zto do-trade* R; z! b1 v$ G( z* d$ M9 H/ r
;;
这个过程实际上是给双方作出评价的过程& {9 z4 Y& h3 d- z/ d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 _1 u* `3 R+ `" a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  U; Z' O1 @% J0 W" x. j- i1 Vset trade-record-current lput(timer) trade-record-current
, V# f, y( P- r/ X% o6 r;;
评价时间
2 o( v6 |8 n: Z/ @! o& rask myself [! f8 t) ^/ Z9 S. E/ U" s
update-local-reputation
7 K( l' d, g8 s0 r. E: w3 R$ Zset trade-record-current lput([local-reputation] of myself) trade-record-current4 ^' r  T; |' M# p" W2 H8 [
]( [& a5 T  e: F4 y' l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  P9 d. h5 H* \; r  F  c;;
将此次交易的记录加入到trade-record-one
# a- b. M2 u2 Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); H/ H3 A, O4 c2 e6 U
let note (item 2 trade-record-current ); T/ \  w' w2 K+ J
set trade-record-current9 M' X9 ?% x  N5 F5 @
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 h. [6 u) i* F: Z1 `4 y2 |set trade-record-current
  @0 L1 Y9 |& L+ C1 h0 ?(replace-item 3 trade-record-current note)  u! L- o1 {& I% q
: d( _1 p6 o6 H! L! }7 T
% R' l5 B# v" a6 }  M# ]
ask customer [
3 Q  z3 h% w$ R! t# y8 A) t0 fupdate-local-reputation' c3 y' @& z; O
set trade-record-current& Q' @  P- \9 _# x6 m$ j" c
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 z3 Q* b( ?( W/ {% U& d]
) K" ]; Z' G! W1 w! B$ w- F6 N( z1 E- M8 F4 I
' H, l. r: O. U$ `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* k( x3 v/ j3 [: B, ]1 ~4 P. A; ^
3 k8 `8 g) {9 X" \2 w: h, ?- k
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
. G9 x" k# C' b1 Q;;
将此次交易的记录加入到customertrade-record-all
6 d& U2 X& C6 l+ {7 v" xend8 n4 K" a8 B( M: S, `# P% h) G
& l! ]# V& R* z) ]6 k- a6 U
to update-local-reputation
$ E( G* E8 H5 t* D$ ~set [trade-record-one-len] of myself length [trade-record-one] of myself
$ ]0 n6 q, s0 f# N: O2 \
7 E) _2 r0 b2 k) U" P# @8 [) @8 |0 a6 L, x% p
;;if [trade-record-one-len] of myself > 3
' X- x% U+ t: m6 U* V% Z/ J7 W8 I
update-neighbor-total5 @* p0 v( s0 \. ]+ ^( |
;;
更新邻居节点的数目,在此进行
3 n$ E' l% e7 O4 ?let i 3
+ d, ~' X+ {* p+ F' k9 tlet sum-time 0
! L- [6 k; e9 h' ~while[i < [trade-record-one-len] of myself]2 ?9 K; d- F4 C  u! N
[' S7 k0 N4 L- L% m9 R- T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. G( W( ^$ S7 \+ Mset i
2 L/ y% f5 R* k. F( i + 1)

5 L' q$ j, ]' x9 ]1 U$ q! i]" w; o# z+ V6 U  t% ]* ^: N7 t
let j 3
8 w. v/ z2 E' r% q4 @  V, ilet sum-money 0% e' S$ I  n9 D0 g
while[j < [trade-record-one-len] of myself]
5 D% m) m, [  G& B[1 d0 _6 ]$ V" 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)6 V' W5 h5 l1 U1 `3 A; @
set j  G4 ]4 D/ i9 h5 u3 h& m5 l2 F0 ]
( j + 1)
% G" @. ]5 G; P
]
4 C- D% z8 @% K! R" `* c7 Jlet k 3
7 D4 T. B+ ?  j5 n9 plet power 0  \* l" N# }% r" [3 p1 C' U5 g
let local 0
2 o  g9 p8 v' m6 |4 Y, Awhile [k <[trade-record-one-len] of myself]8 w" o" |( i2 s/ r+ f, d5 e
[; X) U& w, P* ]; o  A  y
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)
- Q2 w# y( c9 t8 I7 pset k (k + 1)& z( ~" E, T% \, E) X
]3 G" P- ^# M) `& {+ _
set [local-reputation] of myself (local)
( a, x7 ?! G& T0 Q0 Z7 v& eend% ^0 [! z/ p7 K/ x
" p+ c$ N3 x" G3 K6 V: X. |- c
to update-neighbor-total
4 H  P. W+ E) a/ G  V& C
' d+ {! l  {& H( M3 F5 ^  [if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; [: b& [7 g! t0 W$ s" g8 Z6 f! D( j& p3 ?, S

- v' c! v3 j9 S' {- O3 A( W4 qend
' w7 l) g% Y1 [- c& y% v/ @" \+ I) `1 w
to update-credibility-ijl % i  O+ C1 M1 u6 X

4 V6 ]' N3 ?* `! p;;
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。
1 M  V( h0 e# Wlet l 0
8 G1 T7 t6 J7 U6 mwhile[ l < people ]
, g+ q) `1 G9 z- F/ |, E;;
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
4 O$ Q6 H$ D7 a1 S; d/ Y) H[
. ^( u7 O# ?. R& t! m- wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 T: j; [  B) |$ @0 K$ T4 L, K
if (trade-record-one-j-l-len > 3)5 {( t5 K. i" o( g6 q
[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
( W' }' X: Y2 o8 r3 d  d/ y6 alet i 3
. R& B! J& x/ s* jlet sum-time 01 m4 h7 @+ G, N( T: [
while[i < trade-record-one-len]$ s& |: x+ Z, C/ X# _9 N
[. `3 G* Q$ t  q. C) r9 M) c
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 `, M9 {: l& r0 G8 O$ W$ Y& ^$ sset i5 y, q8 ]) W/ |) e: w4 @8 {) v
( i + 1)

% M) V6 R1 e: g. \/ N]
$ ]; G% g( e) ]. j( f9 W$ qlet credibility-i-j-l 0
& F4 y& w3 J! ~; p1 l" Q;;i
评价(jjl的评价)
& H6 G% T. S+ j" q9 u$ t; Mlet j 3
  F0 K* t% |/ x+ plet k 4
$ @( \& y$ }5 h$ ~( y3 m, u  p: f; Fwhile[j < trade-record-one-len]
) q8 ]& {) w8 H[- ~$ {# W" V$ f8 s
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
) m5 B- [' [2 T: H9 |' 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)8 }' i  O1 ]/ s: X
set j# u2 C0 Z2 L& d0 b: c* r8 n
( j + 1)

* p9 C5 a# ?6 l. x]
* I7 }6 s8 y8 h8 q! d2 Uset [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 ))
$ o& _2 s4 d- `4 o4 s% j  R0 H" C1 b8 u9 g, X7 K
: b3 {: w' M$ P; }+ f& T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. k, j3 O3 N0 d+ M5 {' C5 p  @;;
及时更新il的评价质量的评价
4 f! H9 _1 D3 M/ F0 A" wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( H" ^$ z; G6 g" ^( s( nset l (l + 1)
( m& [4 S5 b6 s+ l]
. [8 [  ?0 ]% u4 |6 g. ~; [end, [8 {. H- L+ Q

  w' B1 a7 P: h7 E2 `" ?: d% hto update-credibility-list! O+ @( ^) P7 n' E
let i 0% S* }) I3 M) x1 S) n0 c
while[i < people]
4 F5 w6 G  B3 R- K* g$ J  L( H7 E. L[
3 @$ x% \8 g. q- H! X- clet j 0
" t  K# }# q8 b0 D: \4 [7 Rlet note 01 m. y! q5 H: ]5 t1 I' h' c
let k 0
" E% f6 q# K+ u# [# S% };;
计作出过评价的邻居节点的数目, e! x- B7 Z2 V$ u( E# f& W
while[j < people]
- x7 ~/ y( ^+ h[
, K: I% T, @  b" ~# M. iif (item j( [credibility] of turtle (i + 1)) != -1)# m% O+ c6 `; [% B- N
;;
判断是否给本turtle的评价质量做出过评价的节点' |: E4 a3 b) B7 r) c! L! _& L
[set note (note + item j ([credibility]of turtle (i + 1)))
! X4 r( D- ]! H. u4 G;;*(exp (-(people - 2)))/(people - 2))]

  G2 ?/ h) h& _% \) Bset k (k + 1)3 ^( l. X! y7 e5 {
]
- u' |1 \* F+ j; v: Hset j (j + 1)" c% x: B- A6 Y' I/ Q% l
]
# _; r/ E0 v, o( v. s7 Dset note (note *(exp (- (1 / k)))/ k)4 Q5 P# V" m4 V! O
set credibility-list (replace-item i credibility-list note); {" a+ O) I: ~5 H( H
set i (i + 1)/ X/ }9 j: [3 o3 q
]0 k8 p9 b2 ]8 K4 B/ l) B  v
end
$ L, L0 Z! r& V6 j2 x: Y3 Y
  ~: L) b5 u4 {& F5 L& U# ato update-global-reputation-list8 c, m; L9 R# ^+ ]
let j 0
- W& P8 o! h2 a, d* K: hwhile[j < people]$ n# O% Z. M3 w1 \: o
[; z9 J2 W1 E! [! N  S5 `6 S
let new 01 J3 v4 H! i6 E& B% U
;;
暂存新的一个全局声誉
% V/ R7 V$ c" W1 P! _let i 07 l1 Q. f3 y$ ^# v: ]0 v( A- M/ r
let sum-money 06 p6 k! `: W0 M- Q4 w
let credibility-money 0
" K, B9 R4 y# `) \while [i < people]
4 z: T- n6 F3 }3 q* o[
# T! p- I" q" m6 q4 u5 |3 R% Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' q! O, c0 K; H# J7 mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). U' s  X% B8 I  K2 Y
set i (i + 1)9 H- v2 `. Q9 z! v' x. \
]
6 o1 p* K' M+ i! W/ ylet k 0
+ R$ w) G4 q4 Flet new1 0$ ]6 J3 \. {; b8 A, D; ^$ h6 \
while [k < people]
6 z. K" Z; P" q; E4 \* @[: }; w- S1 M! a) ?' c
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)
: j2 H3 n$ E  l$ aset k (k + 1)) j: S- X( r6 t* X
]  y6 b: W- U8 B- U
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 f) ]$ o# s% o2 N/ [& gset global-reputation-list (replace-item j global-reputation-list new): C( h4 T& E4 l- w
set j (j + 1)8 U7 ^/ E8 v, Y, U  C: U
]
) D. n0 T9 I  M9 K* l4 O+ yend9 F2 j+ O" ]* `1 T' E
# Z+ _0 j. E* u3 R
& B* k8 L! ^( M8 n' C$ g# U, F2 C0 f

  B6 n0 ~- I6 N) z% k) D4 y* sto get-color* j4 J1 D5 q; U6 |

% R  F% _3 D: ?: I' A7 a# qset color blue

* ~% V4 f& X5 ]4 Oend; Q3 G* u4 G! ?3 L

( i$ @' q! p  g$ N" gto poll-class
$ Q1 h* i/ t% E+ e# H4 e7 wend8 {6 W8 i! M; {2 a$ o2 y4 Z

& `, i% |# _* m, g! l% ~3 U# Xto setup-plot1
- B: B$ t- p( e! H
4 q1 m( }% q8 y0 j8 I, oset-current-plot "Trends-of-Local-reputation"
5 |2 i* u4 H2 y/ h' ]
) E3 r& Q6 B7 l+ S4 {% i# ^/ o: W
set-plot-x-range 0 xmax
3 Q6 y/ P' D- r! @1 Z% T
+ ^5 |8 m" g" F9 H1 ]+ k
set-plot-y-range 0.0 ymax
" x: L- U  L9 O
end
' o8 k, a2 M4 O9 ?  F
6 w; h+ L0 u9 U' r9 C. b$ P( [. Ato setup-plot2% q; P( N7 T) f9 E* T

/ D% V/ y$ _, o( ^" @- w. \set-current-plot "Trends-of-global-reputation"
. v( V% @/ Q( g% f3 |! O3 g3 b8 k

; L4 O$ M( n# |0 ]- J2 cset-plot-x-range 0 xmax

0 {" |$ S: s" I& l* H- _! _
8 d) q! Z, {. @# aset-plot-y-range 0.0 ymax
1 |, n8 L; l) P% J4 l* \
end
$ A' _$ ?$ F: [/ d3 _
6 h: b: `2 u; o9 J. N! qto setup-plot3! E* A  q  G. p: h8 S" h
* V: H3 T" \. G6 E; a, k$ \
set-current-plot "Trends-of-credibility"
2 [. @7 ?$ W# a  q) }4 v% o

5 s: m" e/ R* Z  vset-plot-x-range 0 xmax

3 E1 v3 J( e5 V) w, O3 j
: N+ J9 t( B. X% `9 F) ?& ]# e6 hset-plot-y-range 0.0 ymax

* f+ B3 z$ `2 P# a) Dend
$ |. [: O% D. \5 L* C) l& I( \$ ^3 u" x3 `0 ~4 h6 u8 T
to do-plots7 [5 e4 Z* ]7 `; G
set-current-plot "Trends-of-Local-reputation"0 C8 k" v. E2 d8 f. [' e7 A
set-current-plot-pen "Honest service"
! v9 Q8 o+ V7 V1 c8 [) J; L" qend( j$ @5 v% f4 H* G8 L- s

8 ~! i. ]& m- H* 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., k' [+ @. ~7 O  _' a( i: F

" U! }  Y+ [) \5 \4 s6 p, d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, 2026-9-9 05:24 , Processed in 0.026879 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