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: 12017|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:5 W0 E# O% G4 i/ M
to do-business
; x! n9 G( P" }4 V rt random 360
' |3 B7 B2 h& e1 d# A& n6 } fd 1
+ H0 [& w" j- F3 w/ P" U ifelse(other turtles-here != nobody)[
- d; M/ w$ P& T8 d! J: `7 z. [   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.- C" \1 f$ i" ~: d+ I- X8 V
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- G5 H# m$ m( D1 s: b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 E5 X+ R% c$ a4 {$ D   set [trade-record-one-len] of self length [trade-record-one] of self: f/ V$ g- o% x8 P* ^3 H
   set trade-record-current( list (timer) (random money-upper-limit))
, o/ k8 _2 O. R8 B  `% q0 P$ a) f4 m- N/ ?/ c: f; o
问题的提示如下:  \5 C) M2 l! i" Y: g+ g

6 q+ m7 s, h- X6 g3 verror while turtle 50 running OF in procedure DO-BUSINESS
& Q) e: z( S. o. B  called by procedure GO
9 }5 Q; k( {# X2 j. ]# C! wOF expected input to be a turtle agentset or turtle but got NOBODY instead.. e$ B5 x  Y% X' x
(halted running of go)
' \5 X6 P5 K2 }% F% [/ O8 k* B" E  y6 f; g0 I9 d0 b" N# o
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~~# p6 T- L/ v. u3 t7 Z5 g! g
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; V9 e" M5 m6 S9 @/ t8 q
globals[9 r+ p4 t9 C& {9 @% V1 h
xmax$ \' K+ |$ M8 q$ R
ymax7 ^5 n7 B- k3 |" V- o$ q
global-reputation-list
9 n, k4 |$ A2 u
, U8 T' S  P2 a  R' V4 s. v7 ^;;
每一个turtle的全局声誉都存在此LIST
1 p* I7 X& F# b9 O0 A4 q& @credibility-list
- a1 u( [' [. d* C;;
每一个turtle的评价可信度6 z; ]6 v  U2 C9 F( v3 p# Q3 D
honest-service0 F/ }$ O0 m7 H8 R8 }* x1 X* o6 r
unhonest-service
9 S; a' s, f2 @oscillation0 ^# Q% }% g, R; z8 Y% u
rand-dynamic; g9 C5 V  {. B6 o% H9 H
]: c5 N" H. S& w3 f% c5 a. [; G
- H( {' n! J9 R6 `
turtles-own[
5 A3 @8 H  Z/ }/ P* Atrade-record-all
. ^9 Z* p3 G4 w, h# e6 u- F$ U) O& r;;a list of lists,
trade-record-one组成
7 v. `1 s: a9 w# w" K+ y5 x5 ktrade-record-one
4 n% c5 g! T5 |5 F;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" T# J: K/ o! E) M2 f5 A. |4 V! j' f3 I  z
;;[
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]]
$ G9 t  B! @! b6 L7 M* ltrade-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]
+ V+ t1 K' y: kcredibility-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
2 C# f* Z& |- p; t8 Eneighbor-total9 \$ z" L' h# {7 ^
;;
记录该turtle的邻居节点的数目
; Z$ m2 w9 F$ s& O6 q/ j! I1 U1 Htrade-time
6 v/ F/ X. c9 `;;
当前发生交易的turtle的交易时间
; H2 J; ?4 |- {appraise-give
# }% G' C* \' q. S4 {1 f: I;;
当前发生交易时给出的评价5 _( Y* U4 N  x- c3 ~
appraise-receive( i7 R. b3 P0 q; z! s
;;
当前发生交易时收到的评价
& x4 v& G5 r9 N' b0 @6 W+ jappraise-time! n3 a4 E6 ?! P9 a3 H
;;
当前发生交易时的评价时间
" _8 V. ?4 s2 J0 L. Q) m( w: Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉- M$ D+ ?2 ^) T
trade-times-total8 O1 }. l! E3 G- m0 v$ s& ?
;;
与当前turtle的交易总次数
0 _: ~4 R7 N& D+ o4 \$ }& f0 htrade-money-total
# R5 X3 `* T+ R' n, _7 `7 b' h;;
与当前turtle的交易总金额7 O( p# [6 _: ^
local-reputation" O3 C: f+ X0 r1 \
global-reputation
  ?' Z8 K- f. @2 d- E+ v* vcredibility$ F4 y- `3 W( n/ x3 r. {
;;
评价可信度,每次交易后都需要更新! w. a# e5 ]! X7 c& F. K' o+ c
credibility-all
. c9 P$ d8 r% v, i- P, e8 t5 J; i" F;;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( B, {2 e9 V1 S$ W) S% r/ r
- B/ O2 B- I. Q" O- k( m7 Q" e
;;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- h% y0 r7 \5 K+ X. g2 R* r
credibility-one9 U$ Y( B2 z6 Y$ O7 a( n
;;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
1 T5 D9 W: K' d/ ]) U; Vglobal-proportion  {) k8 }' ]6 g  v6 f( {
customer
" R- I' ]/ v$ x" G7 Ncustomer-no# y; x0 Q/ C. p
trust-ok/ v2 P  [; `! ^) W8 T' k6 p
trade-record-one-len;;trade-record-one的长度% c4 g( N$ m; H6 t
]
9 l+ k8 L% I' J# T, t+ u) z& C
6 A) E1 m& v2 P4 ]8 d+ n) S2 n8 [;;setup procedure6 L% A" a1 [( X4 [) H
, S' j9 l! E& @! a
to setup
! C' [' V& G& f2 V
/ Q& s+ R1 o6 G  `2 h+ q: @$ Sca
% j8 l; I, r/ t9 w
# u2 G% u' {, t) l  O+ @& T
initialize-settings
- ]4 J! n4 V7 C3 {) {

7 s5 g4 ]- G0 Tcrt people [setup-turtles]
+ X& q- j8 o1 T

- {3 P, R& c8 X6 ?( f# }' Zreset-timer

- Z8 I5 G, D& \9 G) ^. s# s) n4 g- j" a( _6 I/ V
poll-class

- b" p+ Z& l& W
) U' I3 o% x5 o% h3 `setup-plots

, \6 t- B6 Z" C1 v' r+ O# A5 r7 }# m5 M9 F
do-plots
5 o2 r4 w+ `" Y3 ?4 h8 q
end* A, B0 R1 \# T, S
- e! _4 ~. s( }8 P# v
to initialize-settings  N7 E* m4 g$ ^$ m3 ?+ E1 @

8 a* p. X1 l- m0 O" Oset global-reputation-list []

; {# m" T0 {7 L' w& n7 r3 U& |. j$ X
set credibility-list n-values people [0.5]

1 I) T9 T; ]  c% Y  A2 b# s1 }; N6 s2 Z+ ?7 Q) {/ y
set honest-service 0
' R- h- g) z+ ^
9 ]: Z- v5 _9 v8 x6 _
set unhonest-service 0

# Q/ }3 m8 }4 ]9 i
0 X* w1 r4 O  f+ O3 Nset oscillation 0

$ P6 ^7 f; H- i, H
" p' D6 q: w6 K" F3 Jset rand-dynamic 0

/ F2 e$ C% \7 I0 i: L: Z% P+ B" tend4 A& @( L* p; V5 K0 d" j

2 R( x( W' k8 t1 L" Rto setup-turtles
7 ~/ T0 Q; P% `$ S3 v8 _set shape "person"$ V& j7 }% z/ }) f- F
setxy random-xcor random-ycor6 M5 s% W8 @; d, p" s
set trade-record-one []* z  d; K! X* \+ K0 [2 d* q. L* Y9 n
4 N' W, h2 s, ^4 _" e. E1 W/ z7 U
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 J7 c' Z  n9 {8 N3 U
9 B0 T% K; j1 A0 p, R0 a5 t% n
set trade-record-current []
& J$ c1 g" H9 j$ L; x5 sset credibility-receive []% Q3 o) u2 J3 s" R' [. R
set local-reputation 0.56 l2 F8 v8 x6 ?
set neighbor-total 0" j8 c- U6 ]7 |6 R  f
set trade-times-total 0
8 w  ]9 \+ x6 O$ p7 G! Z) `  N" h0 Rset trade-money-total 0
+ K" \/ l. G' r$ U8 S) |( _set customer nobody
! T9 E  X6 m) T$ H) Zset credibility-all n-values people [creat-credibility]4 C2 O; y: W& b7 e7 S
set credibility n-values people [-1]# J7 g4 J5 Z; }0 h. @
get-color  y% u6 L6 [- r9 T) @. H

% o7 F) Y% H* kend
6 k9 D  W; u2 x, n+ X% Y( c
4 _' [7 T$ q( x1 _to-report creat-credibility
& I: Q3 T6 d: M$ {report n-values people [0.5]
7 O1 I6 x0 F7 b+ N5 Hend6 ^9 [6 g" P3 a. R
& Z4 E' G& ]8 D6 O9 T, \# b
to setup-plots8 z- s2 t( N$ R( F% J# |# ~
0 k& K9 d  ^/ i# L
set xmax 30
& H  i4 F1 V8 l4 u2 t. r3 B

# p3 M0 k# m+ o4 `/ g4 w* Oset ymax 1.0

1 A' [) U/ ?" m1 g
$ W3 X8 W/ L1 j" h3 O4 A* lclear-all-plots
' E; _6 Y( R" R' c2 C
+ X- m7 a: r$ r' z2 J
setup-plot1
6 v) E; k! r" e9 T
4 u* g; O- U2 z, K+ @2 K
setup-plot2
' j/ D4 Y! U0 f
  K6 I2 @: o+ c" g8 T+ T7 J/ e
setup-plot3
3 Z7 p5 r6 ^- ]
end
6 I# t. Y+ y" z; {0 o, [' x/ u; |! ~; i# L* N* R9 Y& }; X
;;run time procedures
2 O* Z0 {2 }. |
: ], Y! F/ ~! \7 |# sto go
& t7 M0 l1 e" C8 r3 g+ m  X" z' m  c! ~0 i3 @' ~" ]
ask turtles [do-business]
% T# B: t# t0 X* [
end
$ C( {9 t3 c& D1 w& L
5 J2 l, i4 Z3 O- {! qto do-business 7 e/ v+ l4 \9 ~) H6 c
- S( _' }% W  ?7 K* W& z0 _

; j1 `+ a, w; A4 Irt random 360

6 s0 N2 P& T8 s2 A! t3 c& _. ?  D7 P8 Q; ^4 e
fd 1
9 H2 k& r- ?% V% Z* z6 R
9 t+ I  k! S. V8 v) ]# S& o
ifelse(other turtles-here != nobody)[

& O5 r1 K1 C" T( I" Q. t7 n; m: R& B. x4 G) ~: y% ^; n) M
set customer one-of other turtles-here
3 \  A8 S3 M- v
6 a& T( M/ i& {1 v/ q' t, B3 j
;; set [customer] of customer myself
" S# S+ i% C' w5 E
' Z, ^" b5 i! X. g/ V& q! A2 p
set [trade-record-one] of self item (([who] of customer) - 1)
2 j( c4 o- i3 d: u( d' J[trade-record-all]of self
( V% T, m) y( k& I( z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ o! R- S/ f% U  q5 q) j0 V$ F- A8 u4 A
set [trade-record-one] of customer item (([who] of self) - 1)
6 D" n: A, ^# W# d: [& J[trade-record-all]of customer
( m; X7 i/ u% @" A( D" o' @
# h& E* s( o9 L5 I* ^) L
set [trade-record-one-len] of self length [trade-record-one] of self

. o3 l1 i1 z) _2 f6 f, N* r2 U: d* G+ ]
set trade-record-current( list (timer) (random money-upper-limit))
6 A* V$ M% _! `7 \3 n
# N7 {+ V  t. y! `2 V
ask self [do-trust]
/ o3 ~$ f: A& W. k;;
先求ij的信任度+ n9 G6 @; p! X. T

6 j" I' f" B. @if ([trust-ok] of self)* {& E- {+ i  x
;;
根据ij的信任度来决定是否与j进行交易[1 t6 \( K6 O$ D* r/ e
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 p: H3 b2 ?7 Q6 X( q  m/ _! v7 T
6 x: s' v' J6 L; z+ V[

: ~6 A6 e! B/ P5 O
4 K3 {. R/ X4 _/ M' s3 D  j! wdo-trade
- h4 e3 W. G" f" F4 Y7 x+ S

" J% d6 S: B* i; C8 g0 lupdate-credibility-ijl

8 F$ }6 `2 F8 u" f/ [
- m8 b9 J7 z' |/ z: nupdate-credibility-list( J' r  x0 F2 g8 ]6 I# s

% p, Y$ M* Z* R; ]1 W& g8 s2 `( {# h2 e9 l0 |, s2 J
update-global-reputation-list
$ `3 J# c' i; O; V2 V

* v- l/ \) o* S/ Q' }poll-class

: S% M# u2 W7 l$ C" J; a/ T2 [3 E9 X- \0 {8 y
get-color

# t- Q! h( b% Q# q+ j/ a/ z0 I) a0 p
]]
' m; \4 ]4 F2 J, R9 T/ R. R; ?6 [8 _$ J8 a% @0 J0 j1 G! H3 V, M
;;
如果所得的信任度满足条件,则进行交易
, c1 {- E: B& a7 [  h5 M7 R  e5 T3 F4 N& B5 Z0 ?
[
9 v0 N4 L. ^9 K5 w/ Z- g3 [) G7 C

: _! i) K, i# D$ n, grt random 360
. |+ s6 Y+ i( O: _( L3 z1 Z
$ X' c2 u* a$ a+ j2 w2 V
fd 1

5 t. S6 \' d7 i& ?- `' [% ]* L# p( `8 z% o8 [1 H% H
]

; |4 `& A! ^! {; p' [# P
, r8 L5 s3 c6 \# q  N5 fend

0 @' u. {: c( p. c% N/ T( A' d% I; u* Q
to do-trust
% z% F0 n2 \. K2 b" l6 Vset trust-ok False
& U7 I; \/ _, M
$ C8 m2 w, X& I" |# ^. R' U; {
  w, P$ F8 l: y" f+ l5 b. @
let max-trade-times 0
% f- K6 p0 F1 J' R! H, [: iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 X" p' ?! |& Z7 Z: P$ tlet max-trade-money 0
/ ?( y, K  G1 L* Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 d# p7 m4 b) l& t- clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 O- e5 a, {, X4 N# i- F- e+ P9 m7 p* o  H/ U- B0 m5 ]2 [
1 F1 {3 l: J8 {) q: ^
get-global-proportion
$ V" u- o  r& O" M* ^9 E; _6 Flet trust-value3 m5 N7 q/ n! e: \- T, }
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)
& J2 d, B4 i, g2 g2 z- S
if(trust-value > trade-trust-value)
* `1 ~; i6 h7 M. ~, v, i[set trust-ok true]
; [1 B$ y7 T) H( y# R  @7 ~end2 x" ^; _2 P4 s; D, n! A

) S. Z2 }* O. F1 M# i% Q0 ^, Eto get-global-proportion! [9 |. t" j$ X
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! n- r8 e+ `/ e
[set global-proportion 0]
' j/ P. }1 ^' `- R$ g2 F[let i 0. m4 M; N8 _0 l
let sum-money 0
# j" i% r; D. v5 ^while[ i < people]" u# e4 g4 p- K  B
[
& {; ?/ O9 t! Z2 x9 {if( length (item i
3 J# Y7 S) \) x; d7 `[trade-record-all] of customer) > 3 )

% o; n. B. n) Z2 J4 L[6 {" ^4 ]; }: e3 j* Z4 T/ t" I0 d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))6 S2 j  `( v7 H1 ~/ x
]
) a" L% k+ G: e7 C- ^7 Q- t$ B]7 |* O* T8 e2 A2 `
let j 02 Q; x0 V0 |' z! f, h, p3 q9 {8 O
let note 06 T" R( b3 U1 B  F; ~4 N6 h
while[ j < people]
: h" L2 `  t5 ?[! X7 v1 o/ Q0 L( o
if( length (item i
+ c6 x! C, K, C1 [2 V2 B- x! A[trade-record-all] of customer) > 3 )

$ _  n/ A: Y6 u* [* b0 f[: [3 {0 G( H/ r0 q. Y) x
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 I0 Q$ k# l3 a0 q: w8 z  n* E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- ~0 H6 B" M  P! S2 i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& J5 z8 c  b3 u2 e]
2 w; F( w/ T3 C* a) G]
0 }$ U7 m) S) M# U2 X) Z" Bset global-proportion note
0 x# T  s2 Y$ ?9 V5 I) K' K]
( d& y# ^7 v7 G  e; Z# w1 Xend
" Z# e, _% @8 a! P3 T
6 O' L# B5 f/ l% cto do-trade
/ H& G) A& g" X0 u;;
这个过程实际上是给双方作出评价的过程
" o, b; T$ I) U% ]$ s; h* P" xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; r8 p  c; |1 N' W( [& z0 [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ }) F  Y' Y! d7 A- Rset trade-record-current lput(timer) trade-record-current- G, {; g: G. [  G8 L( h  c8 v% X: q. J
;;
评价时间
6 U; p3 J7 W9 D+ jask myself [
7 H, p# Z6 h1 I* Aupdate-local-reputation7 i9 `3 l7 C2 J+ d& a
set trade-record-current lput([local-reputation] of myself) trade-record-current
) h+ w  v! S7 A' v: U5 I]) Z' }3 Q( {, f  N# R4 ^1 w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 o% z' C5 r$ z& c;;
将此次交易的记录加入到trade-record-one$ Q8 V8 X# S( c# {! j4 O/ C
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)4 B* [2 Q# h/ u/ I; b; ?
let note (item 2 trade-record-current )9 K8 |# y7 n( z5 n( J( N1 u  n7 p
set trade-record-current* g# E; x$ C- A+ h# |& g5 N
(replace-item 2 trade-record-current (item 3 trade-record-current))
. H  ^# A4 B; F
set trade-record-current) Q! }9 ~; a6 s% ^5 y8 d7 j1 q
(replace-item 3 trade-record-current note)& I' X' h5 ~+ c' @" V- K- p8 g' W
- @9 u/ B3 h" {+ F
- F8 u9 f* Y5 L& {
ask customer [4 D( t1 C0 X- {" B
update-local-reputation0 O; g- l; d: T$ |4 B
set trade-record-current/ X, `+ s2 q8 W+ G  O1 j- a) I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 z) N& I$ O1 h% ^: z]
5 O" {9 L" G/ G
, r8 q+ }5 G0 ]( R, I6 j

5 X# a# m0 E$ }set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 J. M: b3 B3 s9 K( j) ^9 u9 @

$ P  P% Y: Z' Z; L6 S( _9 }4 Xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% ^! n  h: ~* t6 N9 M
;;
将此次交易的记录加入到customertrade-record-all) `; L& }3 o" r' v, X
end( A# \: @+ g# f$ ~/ ^
0 b$ O. K; k3 o7 f4 F0 m+ {& Y
to update-local-reputation
) q- L# n2 z! d! X  E" {+ p% Xset [trade-record-one-len] of myself length [trade-record-one] of myself3 D( `  S4 W. u
, F. G% I+ z  W, E& g
& E1 |+ w9 {% S" t; N
;;if [trade-record-one-len] of myself > 3
: B8 ]! i! J/ I* _# i+ g* @4 _4 U
update-neighbor-total
7 W9 C* q+ U! X6 q5 F/ ?;;
更新邻居节点的数目,在此进行
' A. t( A- N6 N: }  [let i 3
- n: F3 r4 Q6 X! P9 Olet sum-time 0
) q% K# t# u( N- C6 Z0 C% c8 e" Twhile[i < [trade-record-one-len] of myself]3 L5 b* n7 S# }& _
[
/ K; j. [3 E  G1 cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 X- e2 H) {: M
set i2 j7 Z7 r6 T  e* y& J- o6 O
( i + 1)

% C$ w" H. P* o) {0 T5 P]
8 a1 X7 s, v$ U; S3 jlet j 3
  Q: b/ M) a- plet sum-money 02 `* Y" y" w" U' O
while[j < [trade-record-one-len] of myself], L0 o0 p; G- P& B6 j. p0 Z/ y
[3 C+ f. F/ ^. s& ^) _+ d
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)
  [9 t. {  X2 Q4 U0 b( v3 p9 g" R  zset j
6 s+ J. l+ E/ q3 j. Y" W0 W- _( j + 1)
7 e2 {7 u5 e/ j
]
  f0 Q6 P+ t9 ~let k 3$ B/ m' m0 D6 {: G0 j% p3 C
let power 0
& g8 e5 f4 V: v/ @6 Ilet local 0
" e& t) n# k/ |/ G  |while [k <[trade-record-one-len] of myself]
# O" P+ |* {6 v- B+ p[
" {6 d2 J! }* ^8 O' u3 Cset 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)
# `- l& J& i/ |" O* U1 hset k (k + 1)
  I+ V( B/ x1 w) T1 x]
* J* X. I1 N" F+ \# `* {/ u5 @set [local-reputation] of myself (local)7 y# f, E" J7 U8 q. u% F
end
! g- R! J! ~# u  a! I# N$ A" v1 D, d
to update-neighbor-total, K# @5 j0 }% H" e/ [; `6 _
& `3 o$ {! q* G9 P: W5 n/ S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: I5 C/ S% O! K4 P% o7 U' J$ |7 t" X0 }# v+ I+ [

% }4 b# p0 g4 e! Qend
1 h- c( i, _6 [  ?
6 E1 ]! }: w$ I. U, d7 y  Fto update-credibility-ijl 4 y# \" g: X5 V2 X/ K6 N
# }  q4 ?( D9 k2 G7 h
;;
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。' \  U4 |8 S  ]" C
let l 0
  V0 G5 m9 R( g; B& A) Cwhile[ l < people ]
# a$ P& Z2 [% e9 b; ^- c  X;;
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: F1 D# t) A8 R# `" `
[2 C) n! Y& u5 F$ ]  ^( u- y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( K7 m5 s" z( b+ k" u1 Y( r, t
if (trade-record-one-j-l-len > 3)
3 ?1 ~4 X& K9 i[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/ q+ P% o" v) J! _, s
let i 3. i, D( F+ Z" e8 F' E6 f: w
let sum-time 0
; C0 d7 L, O4 twhile[i < trade-record-one-len]
* q# |/ X2 L+ w# R[6 r3 l/ y7 k; l+ V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 ~. U# K- z5 Z6 c( K
set i
2 ?7 B/ H  u& g( i + 1)

4 Y4 h2 \5 U) k9 T9 V* t  f], }9 D1 p' x& }) s% v4 N, n
let credibility-i-j-l 0
/ Q% \, f  @$ `) q$ a; r4 O;;i
评价(jjl的评价)% F4 h. Y' H  t# K
let j 3% `; ^/ P+ o5 }% u
let k 48 `) ^% I; W0 U/ y/ a
while[j < trade-record-one-len]
4 a$ A; W: P( ^' v; {[
& O3 ?6 j" x/ Z' q5 |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
6 ~7 ]( x% w2 V0 u6 Hset 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)7 x9 s4 A* A% F1 V5 k
set j, p% t5 X; f6 K/ z9 {
( j + 1)
, Z) a/ ~' H+ \3 V8 g
]$ R' [: ~& ^4 f( e/ i$ b. C
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 ))" D8 w! H* ?* ~0 i3 o9 |5 l

0 a$ Q5 |! x& x* d/ _3 }, J5 v2 t

6 b4 }" a8 P1 d) Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& \( U; }' n( K& ~  v: s4 @) o;;
及时更新il的评价质量的评价
" G5 Z( x( C0 a+ ^set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 m, p7 I  }8 V0 c2 H
set l (l + 1)
, Q& R& ], N. c( D: i" O3 H8 L]( F0 R2 {9 }4 ^, F. N
end. u) ^. i1 f+ F9 }( {) y1 }0 W4 A
. K- E$ g& g3 t! e9 H
to update-credibility-list
) Z0 U' c/ _9 Z( r* d% Ylet i 0
$ v+ \3 Y# p  f9 |; uwhile[i < people]
2 n$ @% X- B/ k3 M9 {% D9 _, Y! }[* _# @! z9 ^( f( I' E
let j 0! C5 S/ _- J, ?
let note 0
% t. S4 T" X$ U0 Slet k 0* {4 U% j8 d; f* a, v
;;
计作出过评价的邻居节点的数目
3 I  T: P5 n. q) [2 }" \% qwhile[j < people]/ f6 }- v8 q5 e! }* a& [
[
4 Y# L9 r8 n5 M6 L/ k, pif (item j( [credibility] of turtle (i + 1)) != -1)
4 B: k( O  ^  z9 H, @;;
判断是否给本turtle的评价质量做出过评价的节点
! ~8 Z9 t( f$ p& b+ Z[set note (note + item j ([credibility]of turtle (i + 1)))
' k- Y8 r9 x& ^$ J6 S" s/ K;;*(exp (-(people - 2)))/(people - 2))]
& J5 C$ U& |- w5 ]1 n
set k (k + 1)
( S' h/ x6 l, n  Y) f- B]
3 ]* ?1 a) d9 cset j (j + 1)" M% x& U/ s% M/ S9 K& ?
]
, i) Y# ]7 Z/ Q: C( Qset note (note *(exp (- (1 / k)))/ k)
( l: a7 R/ a' pset credibility-list (replace-item i credibility-list note)
; a2 `( a5 T. p" y' o3 D) Fset i (i + 1)
* C  s1 k; ]8 Q]
9 t6 C# g+ ?% b7 a* wend" M4 ?4 z0 ~6 J( p2 b" \
& \, `3 _# `+ u" n* w6 X* [- m& S
to update-global-reputation-list( T1 u- ~" o: G) `7 o2 f
let j 0( s9 K4 _6 F  S) b) ]
while[j < people]3 Z1 w; `* j+ j0 U. ^
[
; @4 c: m% S0 f# ulet new 0
& k( X# u' b# F# z* R. `;;
暂存新的一个全局声誉
0 R  t9 I) C  N; V" u# R. j7 W9 dlet i 0& r; U1 L9 P! E& Y8 n+ H
let sum-money 0
$ U. K. w$ O: x! x8 d1 Llet credibility-money 0" i) d/ Z& F. _4 \! Q; A
while [i < people]
, W, \5 R# S" i4 V" D[
+ r5 s6 j" c* I. S* o6 L/ Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 W! d% u  r! |6 U+ k7 tset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 N% t/ b4 C- E( A) v. k% D. Tset i (i + 1)5 r8 A5 c& n2 U9 k' J9 v1 h0 h2 F
]: c3 J9 o' \) n  h9 C; ]
let k 0. }: }) Y1 D3 v3 J0 k- I
let new1 0
  v4 k! Y. b5 I* c* Wwhile [k < people]
1 T- g* W2 y$ L/ @) W[
$ Z7 n: m4 G4 y  }- `% Zset 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)
$ I9 P% C+ T3 Lset k (k + 1)
' m) L5 ?/ [5 R2 Z]4 U9 O( t5 F* A8 \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! i: Q3 x) b% V/ q9 a8 O2 o
set global-reputation-list (replace-item j global-reputation-list new)
9 M8 U7 _5 M( O8 G4 T+ B- jset j (j + 1)9 H. R) V! q3 m
]: f# [$ f% w- x' i
end
- j. P# Q" Q  \, ^7 j% p2 O1 i6 d& u0 V! f% E
! o; Y! f& o4 Z! s) }+ x+ f$ e- g
) D% N; G+ B  \% v- d) u! Q
to get-color
/ C0 ~0 \) f) J4 ]4 g
# W, W( B9 X2 m5 s* @2 [& Hset color blue

8 M0 l6 {- g# s: H5 g8 Y0 p, Jend4 x* H6 q& `7 ^, G6 w* V. a2 h

5 }, ]' I# G1 N+ Ito poll-class7 k# J6 C; X$ w- q. n4 ]' i, y) [
end
( S% x, V# w' y# N6 ^8 e5 q- J* X2 \! D
to setup-plot1
# O0 m: V, E  U: S) Q9 X/ ]8 v8 e0 B1 x* R5 A, y6 u
set-current-plot "Trends-of-Local-reputation"
+ X+ h. M6 K% k" }: L8 T- }
2 \0 B9 {6 u8 k; v" ?0 D8 o% Z( B
set-plot-x-range 0 xmax
; G) D  W: ^1 p' G

  a1 d$ m' i% sset-plot-y-range 0.0 ymax

6 H5 D" ?$ f# B+ o; x+ K1 Dend
2 t7 n* Z) _5 v* K
$ n( Z8 A1 P2 J4 m& ^4 Z0 Kto setup-plot2$ p/ d$ R2 u$ h$ i" m% R, \

* I8 z/ w( G) i9 `8 ~3 ?/ Jset-current-plot "Trends-of-global-reputation"

2 A+ n9 x7 T5 e9 O( O6 J* L8 Z8 \! U/ F3 a3 ^( m6 \9 t3 x
set-plot-x-range 0 xmax
1 m& j! e6 a7 q, J' }/ Y6 r

' Q9 Z, R0 I+ V. jset-plot-y-range 0.0 ymax

& X; q1 ]+ Q1 B8 k# ?: U$ S( pend6 ~5 a) }, G% K2 s
8 m1 r! H6 r8 G$ u
to setup-plot3
" b# D( F7 O: Q9 v+ }) [8 c  ], V! V6 {- _) b
set-current-plot "Trends-of-credibility"

$ g/ w+ Z" y* N5 e# x
3 V' |" k$ H* h$ |: m% v& Qset-plot-x-range 0 xmax

& e+ G! R8 m; U6 |9 n1 a1 L5 D
+ p4 `) L. t' K% b! f$ x: qset-plot-y-range 0.0 ymax

7 i* B0 F9 |6 {end8 ?3 H+ S2 J1 S5 A
) ]2 w/ D2 B/ z' Q3 {
to do-plots
! t" c/ Z; S6 U$ `6 D: |* i3 Fset-current-plot "Trends-of-Local-reputation"
! `1 k$ `4 H9 v8 \6 mset-current-plot-pen "Honest service"% H8 [( Y+ I% `: z& F
end9 E8 v5 h; t# i; G' T  z
1 W& P  U* O3 P- ]* I9 z
[ 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.( c& W: _+ ^; N1 x

  z3 Q* n4 U( L. G: ^# g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, 2026-2-9 19:11 , Processed in 0.018183 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