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: 15165|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:
( z4 [% ]7 C: P: z! gto do-business
: p; b+ L' z2 @3 u8 n rt random 3608 V( Y& z, k* O4 {5 f1 M7 l+ P5 R
fd 1
/ s) V4 ]4 \$ ]) A8 Y" T/ ^: X ifelse(other turtles-here != nobody)[
/ i! N" W$ T6 c% }4 w; j4 p5 K   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 U5 f$ D/ ?0 x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 i# L% [3 i) Y6 @+ m; `0 s: u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, ^" G# D! W% m- `9 x   set [trade-record-one-len] of self length [trade-record-one] of self; W+ r( S" I1 V! F, l8 @
   set trade-record-current( list (timer) (random money-upper-limit))6 P( c+ X# D  P' n; O

! ~& ^. L8 @) P问题的提示如下:
4 X  l  m1 R' \8 I" e9 I( c4 l" [; ~: ?: ?# ?: V
error while turtle 50 running OF in procedure DO-BUSINESS
& Y1 n# I% _) D& y/ k5 b  called by procedure GO
- Z4 j4 M! V# ^6 x9 v: W2 L' OOF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ t0 E& f2 `! h# E
(halted running of go)
% O1 V0 ^0 Q% ]6 r! m
) J/ u# ~" L# J% Z4 ?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~~
# {' j. e( Q$ i9 P+ P& P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2 E( A/ D+ X9 U7 U/ c+ S) ?  C
globals[
' ^- R4 ^7 |" Vxmax8 f2 x3 h4 P/ |
ymax
6 d' q( V# c5 O, v8 _! v! f6 w+ Q4 @$ wglobal-reputation-list
& X) A% v. |$ T' n0 B" P$ S# s. q) N
;;
每一个turtle的全局声誉都存在此LIST* @$ i& y: b2 y+ p. ]0 ^
credibility-list
3 t" f, o% I( Y! F;;
每一个turtle的评价可信度
7 x+ I/ |( x) n2 Xhonest-service
% E1 s2 g" a8 E# ^unhonest-service/ G& ^; G3 M5 n  i
oscillation) `* \1 a" y0 M  r9 k. i
rand-dynamic
2 P1 \! |$ |: j]
; S0 t- S0 }- H# h1 I6 k6 u; {& b" c; t  g
turtles-own[" f: {% F! j+ b5 b% @+ A! o
trade-record-all
  ~# J0 r4 {) q( E& v7 B;;a list of lists,
trade-record-one组成+ J$ I2 t* y, G$ Z( e& w
trade-record-one! Q* m* k8 y" B: A1 ?
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 r2 ?4 U5 q- f  s8 H6 K8 t3 M7 b# S* I4 c5 J
;;[
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]]! f9 I! n# E/ Y$ h" j/ `- M
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]
+ L  f" z. a: \" Ocredibility-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 Y0 Y! x( x8 d6 ^: e5 W
neighbor-total/ R9 Z5 y& s( p
;;
记录该turtle的邻居节点的数目
4 b5 S3 `& J: h/ Ptrade-time
- C; \' s# k# S0 n7 z;;
当前发生交易的turtle的交易时间
# b2 x: e" G; w, E+ B) vappraise-give& _0 [3 K/ {6 k% f" k# f& ~
;;
当前发生交易时给出的评价9 W; Z$ L4 S4 p# T& M
appraise-receive
9 b& e& q& n8 h7 y; u$ H;;
当前发生交易时收到的评价
8 }3 Z/ y% w4 Mappraise-time
  H$ @+ Y! S4 B4 v/ @0 `;;
当前发生交易时的评价时间& Y- Y8 {) \' R" Y; W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 c- V: f4 ~  Y$ ~# @* H  Mtrade-times-total
; I8 R- a0 h' |& z/ w$ i/ r% p;;
与当前turtle的交易总次数
- L" w) \; Y( \* w2 Q, S+ ctrade-money-total! H" S0 v. ~  a% C2 S5 C
;;
与当前turtle的交易总金额4 M" o3 E5 d3 @8 [1 ^- _2 x- |
local-reputation
7 M! H0 O5 K* Q8 N5 ]global-reputation
4 i9 S! @" U, m9 A2 Ocredibility
* x" C' H) [8 e;;
评价可信度,每次交易后都需要更新: f+ |( ]& Y1 \' g
credibility-all
$ W% Q4 T* W" r;;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5 @4 ]- h  h  h  c" ]& |' U$ \

( Q" \7 i  T- ^4 y" o3 N! |;;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. q- B# d+ R2 X4 _; [% u$ r. ~
credibility-one# e) z: h( V' G9 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
$ H1 t# f" C! ~/ _1 b5 Q7 @global-proportion2 X5 S" p; Y+ A$ C5 @. N: L, X6 k( c
customer
0 e" d3 l' [/ G! ^4 Scustomer-no6 y# a# M5 \, ], {3 r! Z: o
trust-ok4 G  T: N  D' t- l8 v2 ~% F
trade-record-one-len;;trade-record-one的长度
- P6 Z' A' m: {]. w$ W5 s4 v$ V: e9 ?) V* o4 N) x0 {
  K+ R6 j2 N' H( Y: O
;;setup procedure
# R4 ^/ ]6 y( M- v
: H) |( W& z- d7 m  U* Z  zto setup2 Q9 U# `5 m9 k+ R: f2 c

  e. ^, N& H/ dca

1 h' z1 @7 \) T6 j9 |7 Z* ^( I) k9 `. y& E- J& Q
initialize-settings

& n7 Z1 A- m; l' N# L+ e) [' ]% w! a  W
crt people [setup-turtles]

+ t. T0 G1 v% r# E  ]/ P( J$ T4 U& ^$ @1 S9 k7 f7 D
reset-timer

4 x$ Y5 }2 @" s3 ~8 c, ?% W* r
' g6 g+ Q3 d4 `6 ?poll-class
1 |1 h- h& K8 N: M: I* e, o; c

! {4 ^% e, ?8 ?% M. X( fsetup-plots
' B1 l* U7 k6 a' ^& E! f! }2 H

, D: S8 q9 J$ ~9 hdo-plots
0 l5 \" `( F8 T  a3 A. i8 f
end
2 C6 g' [) i8 C# d- O3 U/ U& V, m5 M; Y+ F8 Q
to initialize-settings
7 t+ Z- q0 l2 o2 n3 i) V0 _3 g2 \4 p' b* w" o# `7 `
set global-reputation-list []
& H1 |- C+ v5 T" |* ?3 [

- ]7 u7 E% \# D8 q& V$ T, d/ Zset credibility-list n-values people [0.5]

. c& l% G8 K# U  E0 Y2 Y$ ?! V8 N
set honest-service 0

  Z) K- m; {$ k0 b0 N7 Q
4 L0 v- y4 @3 Jset unhonest-service 0
: U0 J! G% I: |; `1 B' z9 C+ x: @4 v

$ v% E; U+ L/ [; y) H1 Qset oscillation 0

0 s& ?; G, O  Z
: Y1 ~" R- A, z2 v+ uset rand-dynamic 0
, b. m' q' Q. \
end; }& r1 j* O8 Z" w/ E6 K  s
* e  `. B  ^1 K' @/ _* _
to setup-turtles
2 }7 [6 j' Q/ w6 S. xset shape "person"7 L2 r% E  g* h+ I( b
setxy random-xcor random-ycor
3 j0 D$ ^1 r6 ?3 k3 uset trade-record-one []( e5 `! J2 W+ j% Z+ f
  Z( q+ c5 T6 P# s. X. {9 S$ t
set trade-record-all n-values people [(list (? + 1) 0 0)] # r" Y1 s. E+ v. d# T  v2 s* k2 v

0 X$ Y2 x$ b% q3 q: r% {/ P8 lset trade-record-current []
. p( c; i7 v# Tset credibility-receive []
; p% k+ N9 \5 q5 Rset local-reputation 0.56 {1 A9 y6 o9 O3 n6 `( q
set neighbor-total 0) Z2 j. Y6 K/ S; _* e
set trade-times-total 00 Y5 [0 x9 o& t; q
set trade-money-total 0# K) k6 X: x9 t( p: ]
set customer nobody' s( u5 Z0 p. x1 e8 X. u
set credibility-all n-values people [creat-credibility]2 G5 U  l* C. ]- r2 q
set credibility n-values people [-1]/ X/ ]+ R. n7 ^
get-color. e7 l. t& D4 m9 M; ~  c+ ]0 V9 }

- J6 t4 c$ Y3 Gend
' ?' [0 ^5 s: h3 a
/ j. y4 A' q5 nto-report creat-credibility2 B7 D3 Z0 z+ d, J( I. b& h
report n-values people [0.5]2 ^+ q/ O8 d. W5 i$ x! }9 m4 Y/ \
end$ S' e1 z' b" M3 R2 s/ W! a
/ B) U0 |7 e8 z% f
to setup-plots0 T% J$ ]) ]. w2 ?/ p7 j
: [  a. f( q4 ^: \. n, b0 L
set xmax 30
8 `: R+ W2 V$ x* ?

% d1 @! l5 A% x- `set ymax 1.0

7 J. K, Y2 I/ w1 y
1 Z( I' v' z3 @  d) y" \clear-all-plots

$ R) v8 {3 n$ ~  _+ ~9 k# m% V* J: R# L' B$ ~0 ?+ f
setup-plot1
# e" Y; x4 W+ W, P5 D6 F
9 `1 z0 c& b1 n* D6 E
setup-plot2

( }8 v4 y6 L5 g' Y/ S( j$ W6 c0 \& b
0 i2 y* X" a1 w; r& nsetup-plot3

, x9 A' o# @" Z* ~1 ?; a2 L) Pend
  [  B3 ?  p2 z: ]  K8 f) N, c" [1 a" E/ E6 s
;;run time procedures
$ H* Y2 l9 Q+ Z1 L, [" E- C" T; t: T) d9 v. a# m& x) K5 b, _
to go
+ y0 Q' v3 W1 L  [( K; t5 D1 e$ \' \
6 E" Z( E& g7 H: n0 u  Kask turtles [do-business]

: s3 l& c" z, D1 c- S( Fend
- y6 g$ b1 s3 X( h9 s% E; E1 P* w8 G
to do-business ; X2 a+ S, ~% j: j) }: }  p. [# D

1 c- S/ {* d, r6 j9 ?+ `1 _% j6 X6 Z: s3 {
rt random 360
8 i! S1 q' \: H' ^+ r! b3 s

! K. g8 L# W9 Z& N  Qfd 1

: l9 I. _/ Z% X# g+ L8 K5 t
# N4 F" M2 S3 n7 ]# U& G& u+ jifelse(other turtles-here != nobody)[
+ ]! H& R! n" ]  B6 O. V7 V
2 u+ ~7 l8 A8 W9 s6 g. D% E
set customer one-of other turtles-here
! s2 |  f8 E$ w* g5 r

& N# O( J: {! Y: L8 D2 S/ ~;; set [customer] of customer myself
" u2 A# O0 P  V
2 A3 Q9 l- S5 @/ T4 U7 w& \
set [trade-record-one] of self item (([who] of customer) - 1)
% L9 R/ |- V4 |7 l7 h7 F( ~[trade-record-all]of self
* j' |$ b6 F7 C6 H$ T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# ]# B) y% T9 ]' K

" W* Y" `8 b0 Z$ Sset [trade-record-one] of customer item (([who] of self) - 1)
! I3 v: ^( F4 |: s+ Q) E: c[trade-record-all]of customer
( M9 h/ ~) o& m$ U" R
( Q9 E4 ^  M3 Z2 f; G8 V% m
set [trade-record-one-len] of self length [trade-record-one] of self

+ |1 |# S  {7 \) s8 r# M! J
; M' B: |) L& i$ \" p+ q/ @set trade-record-current( list (timer) (random money-upper-limit))

' Y6 z" \4 {7 H2 W. H
' e% a0 [7 T2 C/ Oask self [do-trust]
2 g1 o- u# B' Q2 x;;
先求ij的信任度/ I8 x' C$ Z& P8 a$ j

, f3 s1 }5 B2 v8 \if ([trust-ok] of self)
9 A  ]: R9 G' V+ V0 l;;
根据ij的信任度来决定是否与j进行交易[9 N+ n3 |0 G1 {2 ?4 G: X+ T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 z6 [! y6 K% u) \! G/ P  f
" R6 ~5 a  `* ]; V8 O1 J
[

. H1 u7 N$ o& W8 r( m; b  _# w: J8 z9 ]
do-trade
# N6 f7 I! A1 i! k3 C0 N
$ i7 `* J7 P+ b+ _, T: D% @' {
update-credibility-ijl
/ U0 X& M6 d3 N) W1 h

5 }" f7 }+ {/ j5 d( M4 B: @update-credibility-list6 P; ~" _0 X% f, {+ p7 v+ V8 p0 C& u
% P" P5 X; M9 [5 `5 b
1 z' }! C2 q0 A0 ]4 |( U, |; D
update-global-reputation-list
, t0 ^& S! V6 O  T0 ^

4 Y. K8 s. [" P3 Tpoll-class

/ A, n0 E8 B3 ~  h" v! b$ r* G+ U* D* r6 }1 P9 \. q6 _5 A5 d
get-color
0 O: r) M( {3 C/ k" J( s5 w

; t9 C! S6 j8 T, b9 I9 m5 N- s8 ?]]
" r, r: r: P2 N3 B1 w2 W
, B! R& @* X, W& t. N$ g;;
如果所得的信任度满足条件,则进行交易; l6 g) P* w% D# @
1 {5 p, K6 O% k% Z( i3 C
[

3 L8 }& y& j2 r) p% C8 ?' ?% R7 K8 g6 p9 i- U
rt random 360

$ {- x/ q4 K6 J+ E5 I% I& P* a1 ]7 N% L7 {7 i0 ^
fd 1

+ j6 l1 _6 \" M/ O# M- \# r5 m7 P( A! Y% X9 l8 d! c$ y& Z
]
) m# b" G0 Q7 {3 u7 l9 E

' p9 W  l5 @$ |: Oend

6 i- [9 [* z. d' r
+ [+ V6 U4 t/ N! o: y# D/ lto do-trust 2 O  o' |. j# z
set trust-ok False
5 S+ L! {& N2 M: {% l; s
6 s! X+ Y8 d( E% z

3 v. I& G  }) @1 l* v" k6 A8 V% Klet max-trade-times 0
; n) q- r  a& z7 e4 g; o# Y% ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; I0 O4 [) @8 A
let max-trade-money 0
' i/ O: f" B5 `6 w* M3 Yforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' C4 m" l& Z. Q! B4 klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 t% |! d% ?- S) u- ^4 \; M
6 x  o- i) t2 [% I( I
; U% Q1 z% k" F' U6 m% a
get-global-proportion
8 I' l* y* |/ y# K* _6 _  ~/ ?let trust-value! y& G) W+ }6 u  F/ i$ v! [6 ~0 p
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)

" S8 ^8 t: l  x3 `5 q5 h: T+ Z" pif(trust-value > trade-trust-value)$ }! r2 [0 ]. O9 X5 D
[set trust-ok true]
9 n/ @* O4 I& i4 n+ M. m* A, tend
6 x% r3 l7 |) f# y. V5 Y- x* I5 L3 [
to get-global-proportion
% K6 L, D' ~. q) D+ ^4 eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ M- V, p; U4 J4 g% F; @5 X  J9 }
[set global-proportion 0]
# O1 w# O+ _; v8 l" l, I8 h[let i 0
7 o9 y' G1 F) ~! O2 tlet sum-money 0. m% _7 j9 B, W7 r6 Y
while[ i < people]% \; v6 T% R* G" @  l, Y
[
7 \* b4 O" F* ~5 Gif( length (item i
8 S6 `# z  F0 v5 L9 b0 G( `[trade-record-all] of customer) > 3 )

4 D; x$ V* D$ K5 s% Q" F. N[; R5 Q; P7 l# h: m7 j0 t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' z; e! a" I8 M1 B]0 {9 ~1 \1 {; K, S  p. T4 T
]# s8 N# D( `3 R9 e% e5 a' {
let j 0! M, A; B* c* r$ u
let note 0  p/ f( B) {9 m/ l1 f3 M
while[ j < people]& A" K3 b& J4 Q2 `/ g, t9 y1 U2 Q
[& {7 S! F$ L0 T, [0 [
if( length (item i4 L8 j$ k- M( E' y6 p
[trade-record-all] of customer) > 3 )

2 ?  N0 E4 B  z1 n6 b2 b5 J[$ S& K& }& u; g% U) W+ h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ p; @8 k0 |: E* [  @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]" ]7 _' S6 L" G6 g8 G) ]. j
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 H' m9 I( N1 m* `0 o* e9 V]' N) B' f  e* k3 B8 {; j
]
) D% B7 E: }0 o2 Uset global-proportion note
& D2 w& s3 k0 W  C2 W! ^9 _: f/ @2 {! r0 @]+ o: l- u; j7 ?0 O- ?
end  h0 ]6 O: P$ t/ R2 w2 S9 l

( J- W8 i7 v' h1 Eto do-trade+ m% _$ p+ q: b) X2 `" t" o7 k
;;
这个过程实际上是给双方作出评价的过程
' f$ `6 k3 ?5 ]5 ^9 j2 nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. F9 i" C9 H  Q6 [  q4 v/ {& kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 [+ ]3 K5 b+ f
set trade-record-current lput(timer) trade-record-current3 W% G/ P8 W8 [' t6 q
;;
评价时间. v: n, ^0 ~/ d/ m/ E
ask myself [
- v' r: g" z6 Z( B9 @2 h+ e6 ]update-local-reputation
' M+ c% G7 }# }7 P& V/ x. o; ]set trade-record-current lput([local-reputation] of myself) trade-record-current
4 \- p/ [4 ^0 V/ i0 W6 o]
- d, a4 `1 n( j9 f9 I3 n8 N; y0 Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 ^6 L9 s% N' c# M1 {6 B& _
;;
将此次交易的记录加入到trade-record-one
, N" Y; _/ A; K, z- d" \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 W, l+ O% p4 h7 V
let note (item 2 trade-record-current )2 R* w6 r) u: U( n3 Y
set trade-record-current4 r7 D6 r) E7 O5 v5 U% u4 r
(replace-item 2 trade-record-current (item 3 trade-record-current))

: }+ |& J% x# bset trade-record-current6 ?5 w! G  f- w
(replace-item 3 trade-record-current note)
. `9 w4 @, `/ ~; Q3 [3 x' C  `/ ~$ n- j2 |' a) c
0 ^1 T  j0 D, o& J8 ~# m
ask customer [% @2 V/ \0 S0 a+ b6 N
update-local-reputation$ j; _% a$ l% h% A) m; @
set trade-record-current+ {. Z- @# }# \. E" `
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 k. F3 h! Q. Q. |0 p]& @6 x$ ]( R% `+ x4 J' O6 M. A# o: }
; |- m  |. V3 j4 v7 M$ z* [

% V1 _) S2 Z& ^) p3 z& o( C  Mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ R# E1 S% k5 n8 F
/ L. y: Y; w5 q0 ]6 M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' G$ \( r: b! B% p3 o1 H, p$ m
;;
将此次交易的记录加入到customertrade-record-all0 D6 }0 M2 n$ u/ T( G: q
end
! U. B, Y% ~" q" g. X+ q8 v/ c0 l9 R# H0 i; b) [5 _
to update-local-reputation
% ~" i$ H" n" o4 L9 k. k" ~set [trade-record-one-len] of myself length [trade-record-one] of myself
6 j' B: C* E: p! ~( G/ R0 Q+ q8 F3 f, Q% {0 Y, e  |  Z
3 J8 i, `4 L3 A2 A) r
;;if [trade-record-one-len] of myself > 3

: C& S6 E( I; }2 D8 r# V( a: Nupdate-neighbor-total
2 Y& O' \1 V1 E;;
更新邻居节点的数目,在此进行
8 b- K. n  M& I* `3 P7 y7 J) l. hlet i 30 D+ v' U+ A- _) [6 t# @
let sum-time 08 i+ g, A6 N" Z7 @- l* q
while[i < [trade-record-one-len] of myself]) D0 W* P) z) p$ i# \
[9 Y. w, T1 g1 D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! M: J0 o6 P, v6 `' u" j4 ?4 r
set i
. l) v6 f6 Q* Q. S. `( i + 1)
. |/ E; S  e1 S0 |- [6 `
]+ o9 O/ {" m7 h' A
let j 3
5 u. g; E/ o' }; N7 {) C0 olet sum-money 0) R# o7 |- e: T
while[j < [trade-record-one-len] of myself]% U1 |* [/ M3 X  S8 C& g) ~  s2 M
[4 Y7 n; t- L' p+ I
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)/ U1 K- i" _3 P
set j
' f: r. k# W9 h9 V( j + 1)

' A) f9 k' M" p4 ?]" H& `; y' ~& g2 _' T
let k 3
0 o+ X' O" B4 K* W- ]4 N' glet power 0$ Y: h0 C6 \' }
let local 0
1 {5 i7 J9 J6 ?7 J) Qwhile [k <[trade-record-one-len] of myself]
8 ]; J7 {7 L% e% W  @" I[" J& T4 e- i% |8 H* a  x8 W: E
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) 0 n, t2 [+ y5 t2 g; S/ P
set k (k + 1)
2 e, @/ y1 b; W* A) B]# d& \5 p+ Y$ ~. }" [( o
set [local-reputation] of myself (local)3 S& p; s! U' @5 `9 A/ K
end0 Q' V; `3 g# e% m9 p# |4 m
" a2 x0 c" B; t
to update-neighbor-total
" A: U& p% N0 [3 h) t4 E4 }$ L! {$ T
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: F5 V( Q9 V1 m2 B- A/ l' M5 j% W

0 a, [8 g$ N, {5 H2 \) \  o1 l6 [

# \- {9 `! k, g2 g9 qend
0 T: J% s  d- \+ n8 D( w* r- D; X7 M6 B9 l; s  ]  g5 d
to update-credibility-ijl 6 {% I  q; A% B
  V' K0 S: G) W. i; e. l
;;
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。* {5 ]& Z, B3 r0 t! M0 q) F
let l 0
  {% d5 S4 Q; X; |while[ l < people ]
7 E; o. l4 D* R;;
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
/ O& _/ B- y; ~) {- q% x! T0 Y[4 C& i8 \  M4 x
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( M! ~" Y: d0 o; v1 r
if (trade-record-one-j-l-len > 3)
. l# a# ?2 r2 f# g8 {[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-one4 v- \/ ~6 i* o' q* s
let i 31 c4 U6 M  V7 o+ o
let sum-time 00 X4 Z$ Q+ b- i3 R
while[i < trade-record-one-len]# ]- e- o+ W8 K4 j9 T  j) V
[
9 A' q/ @, c& v, N  wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; v) Q0 r4 E, T% {& x. Dset i# e' A% {+ J& z+ B( |  h
( i + 1)
/ r* x+ G1 V" F* E/ V& a3 h
]
% c) b( m; B% R) p  Nlet credibility-i-j-l 0) o1 X* y, h3 r
;;i
评价(jjl的评价)9 U- m4 E- c2 X2 H+ u
let j 3& T- T! v+ B8 I0 S0 I$ g& b0 J0 t
let k 46 n9 y) M6 N; b7 U
while[j < trade-record-one-len]
2 o4 U& s! H4 ^[
# P- C2 I7 `4 g' i% Cwhile [((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
4 R. q% i7 d+ Q/ }! ?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)
. [* U6 D) l1 I1 C5 o5 n; M7 Zset j+ ^, p. T- j8 P% N, K8 r- C0 g/ _: R
( j + 1)

' ~# T: M6 O8 h]
6 U" x& t3 t" D6 B  G' xset [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 ))
6 B% E7 p2 V! G  }% s
; i: E9 x2 f! S' c, t! g
( h1 y  T0 ^; T4 P4 n. }7 L& N3 K/ a
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). o: J4 n7 A8 e& J- e
;;
及时更新il的评价质量的评价
  U/ P4 \# k' oset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) {+ H3 t$ k4 U
set l (l + 1)" Z/ S+ a- m9 d. k& w
]0 m* ~6 o0 d% m6 X
end; u! u8 Q7 \9 O- V: o4 B
6 V5 |0 X2 D5 y- O& N2 f
to update-credibility-list
$ H; l- n* i) ylet i 0/ v% c4 B. X& t3 Y5 y0 T2 q& V
while[i < people]
6 L! F0 j9 G6 W[9 ]; y" f! z5 e+ Z* u! _# L. S
let j 06 O' F) i8 Y* }
let note 0
" z+ \- T1 {$ ]1 m& ]6 Nlet k 0
0 e3 }3 }% |+ b9 [;;
计作出过评价的邻居节点的数目3 M8 V0 c9 q+ f/ ]; y- S, h- l0 q
while[j < people]
; b+ ?; y0 y7 B/ w[
  `& c3 B- T1 A2 u% gif (item j( [credibility] of turtle (i + 1)) != -1)
/ V, K. c9 ^, W( \+ g( i;;
判断是否给本turtle的评价质量做出过评价的节点7 \3 m) E- g3 m8 o& a- Y' K
[set note (note + item j ([credibility]of turtle (i + 1)))
& Z" B2 }+ d1 p3 p! u;;*(exp (-(people - 2)))/(people - 2))]
9 b( w$ b: T. Y7 r) W( n# P
set k (k + 1), K& W; N1 {+ d" {0 j3 y7 b
]
3 e7 G- i" }6 L0 N9 a1 U9 A; w9 pset j (j + 1)
0 h- _  u) w' J2 `0 |]& P- ]7 X* Z- ~- F
set note (note *(exp (- (1 / k)))/ k)
% \: w/ `. J/ j; Y$ mset credibility-list (replace-item i credibility-list note)
. I7 S( j2 V4 Y- |* ]set i (i + 1)
2 F- r. Z6 X$ _9 W0 b; P6 b]
0 w/ ?. K; s. B: O. R7 Qend
* K+ [2 S4 z1 N
& [' t3 N7 d' f2 w  j3 a% Zto update-global-reputation-list
- \; c( l/ d; q) f7 Z+ G: ?0 qlet j 0: P1 _" k: @# X2 E
while[j < people]0 N! a5 G. ^% [$ ~- e
[
) C- ]* M# `: `! U. ^let new 0
4 ^3 N, e5 N: K% L; P7 [& x;;
暂存新的一个全局声誉
+ ]7 H7 H6 }6 v+ b- [; a4 mlet i 0; P* t1 |/ |" M& j" K
let sum-money 0% L( P; e7 h, t. i; h+ q" s/ j
let credibility-money 0
5 ?( o1 p' i0 r7 Q8 Iwhile [i < people]2 L/ ?% w2 J/ A3 \0 N  u6 x9 H
[3 G( e5 R9 I  [* n6 G. }. N- c
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))), }: O1 e' ^" e( R
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 `" L6 w. Z1 g1 T, |
set i (i + 1); ?3 p; X2 g' }  t- o5 G
]
4 ?6 a0 ~" Q- a& z  S: h+ k! W# Flet k 05 @  R, S. `; H9 n/ b  L- o
let new1 0
$ I3 X+ H: \3 x+ fwhile [k < people]
$ ~" e3 Z6 Y2 K[
$ q& K) B; r9 F, O; Dset 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)
6 ~: W" W) Z( {4 N7 d: I1 c- Xset k (k + 1)
8 c* \* W) X# H* ?/ z% Q& ~( ?]
7 s, m% D) [- u) k1 d3 Q7 pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / m& ]7 u2 P5 [
set global-reputation-list (replace-item j global-reputation-list new)- Z4 [6 x1 N4 J8 B
set j (j + 1)
( q) e6 }  F+ a3 M- b]! ]2 X; D9 f0 J; E. J) W, |
end5 @' }- p2 i+ _9 g) b4 b+ s

" F% @1 u# }6 F7 |- [
/ S* \" ^! [0 v: x& I& P" x
# `3 q4 h" J9 i- K/ Cto get-color6 ?& D% v. J% b) W
# l" b4 B' ]& c4 B) B) l
set color blue

4 i. ]8 `% d6 {, J- N* @end
5 ~. K) }) C4 H0 p/ o, f" C+ {+ F" X/ t1 K) H
to poll-class
2 C4 s! M, m. P' Nend
2 w1 I6 [0 B# y2 i: e# l+ u0 ]+ b- j1 Y
to setup-plot1; I  ?# i- l2 H$ S- s* @
" r1 I3 {/ N) T3 a$ h3 g7 @
set-current-plot "Trends-of-Local-reputation"

" M' P; q- l5 l; t& Y3 g3 r1 o2 n
set-plot-x-range 0 xmax
( l1 T  [/ S6 @  ~, v) L3 l

: F  U' d- T' o( `/ U3 a% O0 cset-plot-y-range 0.0 ymax
; c& D- ?3 N: _6 ~
end
! z/ }" C' D; K+ \4 R' w( o
* x! ?7 W5 w: @to setup-plot2
8 b+ k0 w, g( O' c& Z, Q/ w  T! f) k+ b% u+ ]. K- K5 x
set-current-plot "Trends-of-global-reputation"
& k4 \) U6 W% L# g1 D
3 v7 m& p0 P/ i4 k
set-plot-x-range 0 xmax

# h) e. m! I7 M/ s! r: x6 c' t$ @: s0 v$ d9 \2 R+ n' t3 A4 x5 _7 O
set-plot-y-range 0.0 ymax

6 b# s5 ~5 |# @% [' F& Iend
6 h- X) m% X+ h' k& }% Q( r
2 {# p# @2 e+ o6 W' Jto setup-plot3. i) V$ F9 a' [
6 o% d$ \  c; X% e- Y8 u
set-current-plot "Trends-of-credibility"
4 z( E, R, z9 G- O! j
4 `- d4 v' a8 G0 I3 k5 d6 ^
set-plot-x-range 0 xmax
1 ?7 g# _, E) f0 l

' g' J- q" ^7 Vset-plot-y-range 0.0 ymax

" Y6 |0 n4 S: l2 x) H& Rend; ~5 [5 R4 u. w# W, c
6 `; Z% ]/ T- z. O. p
to do-plots
0 s8 L, }" M" o- \' h: aset-current-plot "Trends-of-Local-reputation"
3 y" w; u" K. {: J& nset-current-plot-pen "Honest service"9 a, p: V* ]8 D7 t
end3 N: t  r( |5 n8 [$ F1 }
( q/ N0 h" ?7 O' `# i0 B5 s
[ 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.' ]2 Q$ a" S3 [1 Y9 y; L$ |9 V

# z% n# K  F3 D0 [: O# {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, 2026-6-4 12:44 , Processed in 0.018071 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