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: 12811|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:
, l' E3 t+ Z& {6 gto do-business
0 K$ M3 Y! {6 Y rt random 3609 P- y8 M' I$ W* b. V
fd 1  K4 }5 {* |! ?7 A
ifelse(other turtles-here != nobody)[
- q9 e( `1 d4 c% E( @  \   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 R5 s  C, e1 U. G. F) i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) K( W7 A% U  a- ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  h1 K0 ?% Z% j: A" U6 N   set [trade-record-one-len] of self length [trade-record-one] of self
2 T* }+ r3 R" s) S1 {9 ]. p/ g   set trade-record-current( list (timer) (random money-upper-limit))  M, K# E6 J- h1 `4 \
9 j4 P: g) I* |) w# r+ j1 Q
问题的提示如下:
' y7 g# S* {* `" N: B  Y+ w% k$ Y- {$ D. i( r! w
error while turtle 50 running OF in procedure DO-BUSINESS
/ M  }* p6 V- k, u' m  called by procedure GO
1 v4 D; Z3 R( w/ pOF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ i6 J: O8 Y% P7 I) \* M
(halted running of go)
& W/ J% ?2 B" i% T3 q1 t
5 b( M' v  R( n; s  q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~~/ _$ b3 z5 m  b' X+ C
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( r. o/ t7 V: u. m; }
globals[
( |8 \/ j. W  P8 zxmax: |) S& G. N; u, ?8 |6 k
ymax8 d" o  B! @  A5 `; T
global-reputation-list4 d& u; a( h& |9 X

; T* V" x' y# Z! {5 x/ z) K* h;;
每一个turtle的全局声誉都存在此LIST0 M3 [3 m: v0 e. `2 ^
credibility-list
. ~2 }4 i% k5 f* o( e;;
每一个turtle的评价可信度
/ N4 M" _0 G8 `: {( O, r2 H, ^honest-service
/ z6 m/ X8 b/ tunhonest-service
% k0 \3 [& u& H6 C4 F6 B5 p% L4 Q& ~oscillation( r; f" s" \! o$ d/ ^
rand-dynamic
% g" f# x9 f! r3 Q* V, U5 ~]  [, q$ ]* N9 U/ L; F

; o9 f6 ~( D  g1 u! O, v1 b5 }turtles-own[
7 a6 S# @3 s% y& U6 z$ Y0 V3 K' xtrade-record-all
* A: {% u: w# o;;a list of lists,
trade-record-one组成
- s/ h/ @" U% {" v5 Y# h, ^trade-record-one
! M6 e( G9 f+ [! H6 J" 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* i' \  n* ]8 }+ W) E, n2 l/ r
7 F8 B6 H3 B' H
;;[
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]]4 N- K9 m9 N( ]* D  P+ A: _
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]
- B! g  E5 y2 xcredibility-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: X1 Q, e, i' n) @/ d% a
neighbor-total
  K) u1 `; E. \;;
记录该turtle的邻居节点的数目6 c/ M" a( X; t
trade-time
) M6 q5 z/ O; E/ d& s;;
当前发生交易的turtle的交易时间
  n0 n# E/ D3 X! Iappraise-give
6 f9 a) D& o1 f;;
当前发生交易时给出的评价
" I8 d) F! |. ]4 e) V4 happraise-receive# R, c& o! s. ]. Y$ [
;;
当前发生交易时收到的评价
. j. [9 x+ Z8 f. ]/ S! dappraise-time9 X/ _' a; b' L' o- x/ H4 a( S
;;
当前发生交易时的评价时间( @# Y3 \* x5 F( K2 z8 U
local-reputation-now;;此次交易后相对于对方turtle的局部声誉9 F3 ]: t; C9 w5 J! _, W! W3 q& d
trade-times-total; k/ S( i6 \5 `$ b% o9 }: G, i
;;
与当前turtle的交易总次数
" P- [' ^( S7 ?0 y% ^1 g0 Qtrade-money-total
- Z9 C) ?1 B+ y. `. m# P# h;;
与当前turtle的交易总金额
+ }/ `3 `7 y: P* B* ^3 q, ?( Vlocal-reputation
2 ^6 O- V/ }2 U# _% T* I4 Z& ^6 ~( S) dglobal-reputation
( T" l5 {5 K. ]2 N. N  Ucredibility
+ J; z* h3 z, d/ h; A- L: c$ E& @;;
评价可信度,每次交易后都需要更新) f+ `: D* s) _* y5 r, P" s1 p0 {: a  }
credibility-all
# ^6 q1 z0 R2 a" w; }" G5 W6 l# B;;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" S. m) L# b0 R+ B
( H+ a2 d4 |/ V6 ^% C; t;;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
/ z: J" C2 ?+ N& Wcredibility-one, ~& w0 Y0 ?( S
;;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people8 t( k0 a6 h6 b/ T' Y
global-proportion
: a( T( m* r( I1 w- Y7 Ocustomer
4 P' c0 S( C# ]$ j. C- m+ `+ Ecustomer-no
/ ?6 a; r8 ]$ W4 D# btrust-ok
; k* r0 [; z5 B1 etrade-record-one-len;;trade-record-one的长度
5 c7 T1 O: \# b4 \]8 r1 O- ^. y' t

0 F1 X, L. f' A* n. w( g;;setup procedure% v8 A6 ]* o* V; s; [9 S3 x

' s  v& T1 _3 O/ F/ a: Dto setup
) |5 O9 B( f, ?& i+ Z; c# Z- p
0 o% J) B7 d* \: {$ u1 xca
  f2 d9 x# F# d6 C. j8 R$ U

/ |( {. i8 u4 A! e$ n) Xinitialize-settings
& j' o- x1 M& n! {9 l! L4 S2 Q. y
+ C* B0 }0 }  C, N
crt people [setup-turtles]
# Y- |8 \9 o! a; L$ e$ S+ f, s

5 l9 G* {" J$ G9 freset-timer

  J; `9 c$ P, W+ h( b! l! J, Q; K6 W) J. ~+ c
poll-class

* r9 C/ F  j+ O8 t' N. g& N
. [/ r! D& v, a% u2 s. jsetup-plots

6 G# o: d- M7 {. C" l* h+ o- ?
do-plots
1 p2 U6 S8 k5 ~. @
end; a5 g6 X* ~0 t% I- G

/ ^5 i8 |9 b0 |' Q4 L& \! Mto initialize-settings
/ v! N% l% z7 D  j5 z0 K8 [
) a) `8 G9 J% d5 kset global-reputation-list []
, ]* G1 Q$ J; O

# R# I5 f0 G; M0 i  I# j" r7 ]5 e" a+ eset credibility-list n-values people [0.5]
2 T" P& l2 Q7 z2 D) u

% s. i) U! p5 Q- R! U; o& n+ p6 uset honest-service 0
* i+ f' U+ m( P8 _' j
' }1 j% v6 G: w  }0 b* l) b/ I1 K
set unhonest-service 0
5 Z+ ]: n0 `; D  E1 D5 ~) }( g
+ _/ M- F0 E9 {1 v% [5 \, Y( R$ f% I
set oscillation 0

' M6 y4 d3 Z' P- Y- ?' N+ o
( L. ^* w. C+ x# @0 Cset rand-dynamic 0

) y0 ~3 k% Q+ z6 c( H9 Qend
1 h+ y: |5 I  m( m" A
/ v* Q4 O  r# T( F) y$ o9 jto setup-turtles
% Y2 [( w8 M( M  u; o6 p' ?' _set shape "person"' R. L/ v; j3 o5 Q* j$ m
setxy random-xcor random-ycor
0 x) T- a+ Z/ |: z9 \, E. dset trade-record-one [], z& ]6 C) b, |- a
1 _4 N# a! x4 [5 f/ M: q7 a
set trade-record-all n-values people [(list (? + 1) 0 0)]
( Q& I+ G3 }' q  x6 i

0 q% K2 l5 U9 Z; ~3 K- ]set trade-record-current []- R" Q7 M2 C  L: Q& G% |2 M: {
set credibility-receive []4 h& i% j8 U$ @3 m( L
set local-reputation 0.5. H, [7 z: N- _$ `  E# _; B% E
set neighbor-total 0
) o+ F' l2 |1 w! i0 [7 r7 Qset trade-times-total 0
4 R( s& ?3 S! m. {# }/ xset trade-money-total 0
0 [8 q$ F+ ]/ ?4 Pset customer nobody
1 ~. r7 p* G- F: K3 A' @) B/ sset credibility-all n-values people [creat-credibility]
0 `# {0 s* _5 Hset credibility n-values people [-1]
% X* I5 F6 s0 ^6 A- ?# g! aget-color5 E5 Y9 B) f$ L

3 U6 U' r* P. Q- H! Kend2 t  J, j3 M/ K: C/ i' L; S
; _0 J4 h7 b9 c5 Q3 e
to-report creat-credibility1 |  B, G' v  Q* z5 K
report n-values people [0.5]& F5 _# ~- j- J( ~; r
end
7 {; Y( ~, F) d' N
% N" S6 z0 }+ v+ Uto setup-plots# O9 J2 }: L% e

) P! Y0 p, h5 I8 l  [: E  H2 M8 Eset xmax 30

$ X0 }" a  l# @6 |" p! U9 H
2 V; Z- U0 N3 R/ F0 u2 P- f; ], `set ymax 1.0

! ]0 t, }# }) R* ?" o
# n, l7 ]4 L9 x) f- _clear-all-plots
+ w2 R9 g1 D: l: e- ~' s8 Y1 b
6 O2 m# Y8 B, l8 ]) b/ n
setup-plot1
0 y- g% l' n9 V& c# n. x& l

7 U8 p% r4 H$ _: usetup-plot2
0 C4 @# {: S* g
& _+ w2 ~3 N( U  l3 h3 Q5 h
setup-plot3
4 V3 M; H! }' T' K0 y
end' J# e/ f% G9 O! O
& X6 x# m1 P5 O% @8 k
;;run time procedures
  e& A1 [0 _( a) k$ u( Z: W' f$ H; S- o8 O5 H, m
to go* A" ^. ^! n/ \# \" T6 z% e
# c" w- g: ?& m7 u- Y8 t, u0 _2 Y
ask turtles [do-business]
4 ]5 Q7 [' h; d: E7 m9 v
end
6 \0 u% x: ~  T5 N* E  }+ j  T* E/ p6 Y. N
to do-business
; L' o* r. Q9 A8 R1 d
3 m8 p5 O* u4 j; l$ k

8 u$ C' A! I4 ?" d6 `rt random 360
7 q* E$ v! A' H; {
- M9 K) R% V/ p& [
fd 1
. E& l+ H' ]. G" N' A

- b" a+ @8 T7 \2 ?ifelse(other turtles-here != nobody)[

) }$ t0 A+ n4 K
4 Q- U8 U* e- p# Mset customer one-of other turtles-here

& P& Y: C0 I& `, e5 C7 m* R5 ^  X
. ^& N' M, G+ k1 e  O/ K;; set [customer] of customer myself

& t# }% Q; I. n) A9 Q$ W3 a4 R4 m. ?! v
set [trade-record-one] of self item (([who] of customer) - 1)! ~; `8 \( h7 L
[trade-record-all]of self% p% M7 Q$ R1 s& w; \2 C
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ A) @+ P3 _/ ~; d& ?: i! G9 g( A

; v  o2 [/ O; Yset [trade-record-one] of customer item (([who] of self) - 1)" Z$ t& h; P5 h7 l0 O) S
[trade-record-all]of customer
# D6 \' e8 Y. Q

2 j. C3 X  ^% R. u. Vset [trade-record-one-len] of self length [trade-record-one] of self

/ A6 N* D" O3 U- f0 E. D. a8 N0 v' i8 \$ C
set trade-record-current( list (timer) (random money-upper-limit))
2 b, ]5 I! n# B0 ?+ d& }

# }% Q1 s) K. G1 d# g% s4 |% Qask self [do-trust]
7 o6 p/ J) A* Z2 `+ v;;
先求ij的信任度
% v# {8 E5 B7 z7 |9 B. X) L1 k5 _% A8 g
if ([trust-ok] of self): @1 d5 L4 Z: |1 D3 g8 b1 f3 v- }
;;
根据ij的信任度来决定是否与j进行交易[
4 r, t: d' u4 B& Cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- U4 b; ?' c% l; v. x4 l% ~4 V3 @  s. t* U' [& T
[

( X# Z: c% E8 s. N) }5 T0 H: W( h  H# z8 M! x
do-trade
( T( b+ D- }7 Z9 V
- {% ~* y& F4 g: G7 U3 G/ W. e
update-credibility-ijl

6 x" z) y7 J3 `0 L
+ o8 W% W8 P2 t4 A# ^% ?& hupdate-credibility-list& d2 K  g& x. V3 N
( {( x% h! k( |9 h9 N, T- D! `
5 x% D! m7 }5 I  Z% P8 ^* z
update-global-reputation-list

& P" J# @- e1 d6 \5 a7 Y
$ g" e+ |# {  J" V( L' _poll-class
8 B$ R# j0 t: i2 e: E  p

7 i" J! o: Y, C2 l9 zget-color
9 J( R; P1 G6 l2 V

: G5 ]6 C  D" Q( i! c2 m/ ~9 R]]" ~8 y9 t( F$ b2 S' a, u4 o" @4 y* j

7 P: t& I& z  V! N;;
如果所得的信任度满足条件,则进行交易5 P3 L6 D/ Z+ P3 I. E8 a

( h4 V4 @3 w  n% {6 h' b7 u3 v* \[

" E# f  u9 c6 @: k) d0 E; i9 E& V5 _' f; g: F4 E
rt random 360

3 S) s7 @2 \% d1 ?3 `' z3 e/ v( n, R$ r) O% t0 p# g1 t
fd 1
! c( X" s" x( q; ^- l3 y1 {
; R: j- l+ N) a- V7 V
]

: H9 w+ @, v! ~' J) c% H
/ a' T: A; i/ j8 i" A9 {$ g; S6 nend
7 s/ ?% o, Q3 d# S; U

9 P' T# `3 }$ C$ bto do-trust
( ^9 W: c7 Z  F: D5 N6 p9 Rset trust-ok False
# ^  L7 d4 y' q& i$ {* u4 F# H' e4 u9 D9 c- f9 q) N( _

$ _+ k& p& V/ S2 t4 G( plet max-trade-times 0' q% z& B$ n5 G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 a1 o# Q" w( Z  ~! X( C" Y
let max-trade-money 0
( n. L, I$ F' Z! e: fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# x' {. x+ N3 m  }5 D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  ?1 `4 ]5 V6 v( O; l4 u7 z
% u' n! ?1 u, N( E
$ I; o. O8 I3 h
get-global-proportion4 l4 d5 M9 @$ X% @1 |. t5 @
let trust-value9 _' h9 A2 ^. Y, Q' i6 R
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)
" t# ~! ?" B% @% c* @& |$ w
if(trust-value > trade-trust-value)
) @$ ?. U* O! @# `) M[set trust-ok true]
/ R2 W4 ?, U& `end
) Y" U* q) ~& T" x! d4 B- _' c% J! g6 Y
to get-global-proportion* Q& w" o9 f0 K$ t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' |5 _. Q* w" u$ E  e' S7 `: x  Y[set global-proportion 0]; |, k% e: ^; z
[let i 0
5 B" i! N7 u, N8 {. d- m) w0 [let sum-money 05 C4 T6 i  F* H1 S: B3 e% u
while[ i < people]4 z5 y5 j( ^' z! x; W" s
[
+ a0 m" s# ~, h! b$ Wif( length (item i
, Q) C2 s! |- C[trade-record-all] of customer) > 3 )

( X* ?# R6 R: b[
7 L8 A  l" n3 U8 s& s2 }/ D4 ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 J0 y4 p: F; s& a) A]
. t& A4 v9 p! F0 p6 O* ]. g( |]
( H( m( l* v" f: [let j 0
$ R; ?1 ]; \' R) p2 F3 _let note 0
% L% {9 j. a2 H9 |; p$ E' Ywhile[ j < people]6 c# u& C! X4 h$ v
[
4 L* M4 V* v2 i( _  s  t6 r3 q' Gif( length (item i$ l5 u  B' s; s, j
[trade-record-all] of customer) > 3 )
8 {, j$ X5 B9 {( K/ d3 ~2 D6 q+ Z
[
) w' _# C! Q5 B! s) Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ _2 X) C! [0 Y- A! [( x+ Z[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- c6 u) u1 D$ k: D% ]/ y& i
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* ~- q7 ?6 _- c. s, ?" V]/ U! h$ G! O/ H$ p4 H% q" k
]' S$ T7 m" a5 V6 ^. ~; N6 M
set global-proportion note
# _5 E' e4 r* B6 k]( ]9 u+ q5 D6 W* S+ E4 P3 D
end
7 b* W: C6 F! j5 `" d; Q4 Q# w# I3 h; H( J( Y
! U- H: ?! K# Wto do-trade" R; x9 s( ]' [9 K" j
;;
这个过程实际上是给双方作出评价的过程: S4 @+ J, a/ p& B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 x" }% i* z6 V1 |& N' Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  @- n  v$ B, f  f# _9 J4 j& E$ g
set trade-record-current lput(timer) trade-record-current' g6 O% U  N# K9 c" X6 `6 n
;;
评价时间# C) y' s) i3 I* J: R& F! p
ask myself [
4 s! I* I+ W7 [+ o" Iupdate-local-reputation
  t: ^) P: |: b& xset trade-record-current lput([local-reputation] of myself) trade-record-current
- A7 N, c( K8 s, V/ ?7 k8 i]
1 Y1 D. N; }, M4 o: r8 uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" [  K# t! j% Z) S6 y
;;
将此次交易的记录加入到trade-record-one) y! L8 E9 L/ S& M; ~, P; I
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); Z+ X1 d+ v8 [, @* b) ]8 P9 b
let note (item 2 trade-record-current )
- J5 |! r& m0 k: h8 A; s' iset trade-record-current, ?" ^! ?4 a. ^; e! [, D
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 u) _3 C2 L* x- y! S6 _# y
set trade-record-current
" g3 m7 y, }" t2 x# a(replace-item 3 trade-record-current note)
. l  J; ]/ k/ z& a5 m$ b, t: {% }0 Y9 A1 ^2 @1 b: U; [) C
) B& S% L1 }  h7 g7 D
ask customer [$ n; K; @0 G, t/ J1 Z
update-local-reputation; W& W) n! }2 D6 o  }
set trade-record-current' E( N. W/ D7 H; g5 o/ G% c' h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ d, {3 T! C5 W% n6 b
]
; P5 N/ i5 R9 ^3 a+ D4 W. V- C( V0 O6 q5 K: @2 x! E4 T% A

* q2 @. _' A) @: ^1 g5 o  Jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ _7 m2 C+ t% W$ Y

/ l. t5 s1 c9 ^% F4 @$ @set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" q7 r$ v1 Q. b3 W
;;
将此次交易的记录加入到customertrade-record-all  H( ~! D2 s: g! ^2 i' o% Y- w
end
& K: }- g9 ^0 N  w- {; Z8 k7 w+ a, P6 e, k, M9 `
to update-local-reputation( t! a3 V' U3 q9 z
set [trade-record-one-len] of myself length [trade-record-one] of myself
. g" |# m* H) r: g9 P0 q* Y
4 P' X' A. z# n' x, C; C$ M7 T, }$ s+ A8 \6 {
;;if [trade-record-one-len] of myself > 3
! L" X: q3 O* E# c2 ?6 P9 Q
update-neighbor-total
# R- M6 y2 U* o2 x9 j' Q) d;;
更新邻居节点的数目,在此进行
" ?1 M8 i3 F6 `! z  w# j1 }let i 3( Y1 Q) i. q9 L+ `2 X- \: D
let sum-time 0/ F( H8 N) P3 j
while[i < [trade-record-one-len] of myself]7 X: m: W: m: E( z
[! v+ |' d& w' P/ P
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( w2 t% }; J# E8 v& s
set i
+ D5 Z+ `# S' _  Y, \( i + 1)
& T) L1 s1 i% j$ [/ ~9 m
]" m/ f7 \1 @2 D) a% K- `8 a
let j 3
' w% c' p, J4 t! F3 @8 Z0 Dlet sum-money 07 r: ?  u/ @2 t6 O* X
while[j < [trade-record-one-len] of myself]% ~. S7 }1 r" J& ?
[
( T0 n* j0 `* j3 |( |- _# Q  A& J1 Aset 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) v* |8 C' H7 h" qset j  R# U8 M4 S" D" p7 v
( j + 1)
( m1 ~0 @+ t. R
]
3 D4 d' k' g7 R7 c0 w9 `8 `; klet k 3# @6 e+ a4 _+ b1 Q7 u
let power 02 L# @3 u6 }/ I! [2 |) W3 m
let local 0
7 L% ~$ y" f( V. Hwhile [k <[trade-record-one-len] of myself]+ ^9 R- M8 Y8 \% Q3 K5 n
[4 X5 Z8 |1 V* R
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) & o7 x* R9 k/ @5 `6 r4 P
set k (k + 1), u: G# n* O: F/ j4 l8 }9 f
]1 Z* |* I6 W% B$ B
set [local-reputation] of myself (local)
% r  @8 Q# \! y' Q. rend
3 {% P$ I9 c1 C: T# O! h9 Q8 Y) ~6 H6 u6 J
to update-neighbor-total6 m! w: G4 d. @8 I& `" j0 L6 G2 t

% x# B' ^) z; \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: z  s* v1 H; d  h  f' [1 L$ N- C8 W- ^& E  F0 i% {/ X) G/ s5 _! T

7 Z! Y5 _% l! C  I9 tend) j4 R, v! ~4 O8 p

! {1 z; y: G/ x" Xto update-credibility-ijl
8 _! t, E7 j' i& D! O7 l7 ~0 x3 F8 w3 X9 Q: \: p/ 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。! b" A! T( {0 v4 |- x* ?
let l 0: n5 o! b/ Z5 `2 J8 o
while[ l < people ]$ f$ g: x' N6 b& |6 T
;;
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/ S* y2 Z; @5 P" L% u
[2 ]! k5 D/ H( g
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 S- L% S+ D1 j* _
if (trade-record-one-j-l-len > 3)$ G; I+ q1 a+ r$ U
[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" v  _  T( G# ]3 O( [8 L& l: x. K
let i 36 @* d  u3 V4 A/ ^5 ]/ P
let sum-time 07 x! Q3 R" P, H9 w# s& y9 C
while[i < trade-record-one-len]
4 |& `9 k8 F# _' l! q' v  c[% b% y% S) p! v  ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* Z( s8 k, h5 N, X0 S% c$ W
set i
0 P& h+ k: ?. e* `( i + 1)
4 ~2 e: C- v* P* @9 d) e
]9 V2 z; @1 b1 h# ^7 _$ r( f) ^
let credibility-i-j-l 0
8 n0 g3 z/ s" W( p  L;;i
评价(jjl的评价); ^3 `7 L( P9 E! b
let j 3
$ _5 |/ D9 l  R0 x- q- Z* hlet k 45 O7 p9 H$ w; _
while[j < trade-record-one-len]
' D. k4 U1 U& `; _[
/ o) W/ W  `5 Y* E' 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' ]" u8 s5 T  h( f* n+ V- V. I
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)/ A  v' `& g: n
set j3 H$ L* B; z' N! W* |! i9 `
( j + 1)
- t+ A, B8 S( t; a& g. P6 |
]$ E+ g8 q% M0 R$ V/ r
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 ))) w. t+ r3 @( c4 C& T

, g* Q1 z3 h. Z) a
& P! H) u8 F! D0 u0 ]: s, D5 P
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# u- }) H7 r3 {: D0 f5 g
;;
及时更新il的评价质量的评价) I6 @: C+ S* B( o( S% z5 L( W
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: D7 I- W; M( x% q( b
set l (l + 1)
2 N) X: N5 G2 O% @/ d- ?$ d2 G5 S]
  r$ J# \( D& }% E5 H9 i2 p3 x$ ~0 _7 eend; C' o4 l& F; |  n( l
, C4 a& ^( A4 M8 g2 J/ Q: e
to update-credibility-list
3 B9 K- q5 N, E2 p% @7 u0 nlet i 0
+ a, L2 ~0 y! l$ G0 p! ywhile[i < people]
) Z+ R2 c* G: `) T) C8 y3 b" p[
- e  T; X! v0 ]. I3 V+ Z( ?7 ?2 ulet j 0
+ ^1 m  q7 e: B- ]0 q' xlet note 0
$ C9 c1 s7 U0 Y) J- jlet k 0
0 F8 o" {& |" F. K;;
计作出过评价的邻居节点的数目
, {/ s& v' q+ z: A) H. e; |while[j < people]  |4 z% V" m5 e) q  q, b  s
[
* Z0 h$ Y; b! A2 U6 `if (item j( [credibility] of turtle (i + 1)) != -1)- P' c0 E6 T/ t& ]9 B# N! u
;;
判断是否给本turtle的评价质量做出过评价的节点5 b) ]8 K0 f# u* s+ I# X+ U
[set note (note + item j ([credibility]of turtle (i + 1)))
( U8 F% m2 |  x6 \+ s;;*(exp (-(people - 2)))/(people - 2))]
, g; c+ o2 c, l
set k (k + 1)2 }+ |2 f, R# Z+ D
]
! I# a7 Z9 N% dset j (j + 1)& a  f  r$ {+ D) j
]6 [# L$ u; I& q0 I8 n
set note (note *(exp (- (1 / k)))/ k)
- f  Y0 W) X- A; R$ h5 Dset credibility-list (replace-item i credibility-list note)
) U; ^) Y. _2 [: C, D/ Yset i (i + 1)( ~  U% m: m8 Z& V# O4 ]
], o9 t# j+ W8 ^2 A6 P
end
% F5 T! H9 I, `, S' M$ A
3 E3 [* W1 M, Y3 pto update-global-reputation-list
/ p: K; b+ w, Q- Vlet j 0, N5 Z. P6 m4 d1 G
while[j < people]& ^7 `) i7 a" J- d2 t
[
. i8 l. z" q4 \/ Q; P! `let new 0
. h6 f' i& Z/ }$ b/ ]0 c;;
暂存新的一个全局声誉
; N7 p( Z$ d* e2 ~  ilet i 0
1 x& g" p% _4 u2 u  plet sum-money 0' w' L8 ~/ ?1 `% @" \' l6 u
let credibility-money 0
$ A" w+ o+ c3 J* W6 f. d( N' L+ [while [i < people]% K5 g1 R6 g4 I# f4 v. J0 f
[
' s- n' C7 S$ j, \2 m9 Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 T4 w: C; x. w) ?; I" s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! t7 N6 ]" {) U  Iset i (i + 1)
5 J1 r; R/ N! D: N- @1 F) q9 ?1 @+ W]( L2 ^1 U3 S6 A, M8 ]2 L/ l9 f5 r# y
let k 0$ R  K% A$ n6 a
let new1 0% o- Y* b: h; b$ b
while [k < people]
4 w7 [; i* i! G# m% }[
  _2 b+ s; v( M( B# eset 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)% k! @9 s) W- n5 Q" G$ B+ c
set k (k + 1)
: \$ a2 U# g9 N+ p" H; o]
  E5 x: s1 P- Y/ D4 c. o8 R5 kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" X7 X7 T: t; `/ h. Tset global-reputation-list (replace-item j global-reputation-list new)
2 E' u, t, E# w$ n" Vset j (j + 1)8 r' W5 X9 L2 R3 U! r& \
]
$ q# z2 ?+ L  i! I1 z, `! Rend1 [& d# u6 p  R  W! u% s6 Z& g9 f

, k! ]2 ~, a; F0 m# s' l, q0 j: F! X0 d! M2 I
! A* @/ o5 h: z4 F$ L% ?
to get-color+ P2 U+ }- x: s1 E5 Z/ Z4 l$ o$ l
% r6 h' X( B( m4 z3 `1 x
set color blue
2 V% v/ y/ Z, `: Z9 @; j2 n
end5 E: f, {  `6 F+ B- S4 L. ]0 d

. q. V+ a1 u4 A7 s% Pto poll-class
! Y* a. J2 a( Kend6 r) _0 q3 I2 e4 z4 K

8 O$ b; T6 b4 }8 xto setup-plot1( Z) e9 m, S' r6 s( H; }

& z6 U1 |0 ~9 p( Eset-current-plot "Trends-of-Local-reputation"
  g9 u5 \% p' c# O( s/ M. n7 a

( K0 t+ j/ r% z6 {( t2 _( M4 Dset-plot-x-range 0 xmax
3 }( B0 T% E0 ^, g* H

# b8 _, l, g/ b1 o0 i4 Uset-plot-y-range 0.0 ymax

9 s: l% _0 \1 u. M, U4 x! Hend
. T5 c/ ]8 D& _' W7 B% a
* u# b  u+ j* M1 a8 c  oto setup-plot2
( {" X2 f9 g+ p' o5 E* q7 W/ C8 ^7 f( Z0 N1 o
set-current-plot "Trends-of-global-reputation"

( s/ f* d$ Z' _& l6 o. \$ z2 @
. L. }/ k! d2 v3 L" oset-plot-x-range 0 xmax

7 P, ~2 F2 W9 F7 t- s, u4 `. ?; l, B, l# c8 ^
set-plot-y-range 0.0 ymax

: C* I  Z" r  l( z% kend+ E2 ]$ ]8 J" q* h8 }% Y5 g0 I
/ \0 ~+ ^* e. l& v" T4 s# G3 N
to setup-plot3& t) O- _; @; r$ l
5 ~$ e; ~- w% B8 h5 O
set-current-plot "Trends-of-credibility"

. {! ]( F0 y* u' x. @) ?
. v+ i, x3 h" M3 T- i* A) \' d8 F. Rset-plot-x-range 0 xmax

( v2 G7 L3 s( J3 n
* i# n' Y2 Q/ h" e9 |& v; sset-plot-y-range 0.0 ymax

4 l' n  g, g7 v5 c7 J3 [- v2 I' {end
9 t1 [) o5 A+ w
, h/ Y# V) d% b% B% tto do-plots, i3 m3 o2 X/ P( k* [+ P$ k# J
set-current-plot "Trends-of-Local-reputation"1 b! @0 y' Q9 g. W, H; G7 x
set-current-plot-pen "Honest service"4 U5 Q; H4 d5 @
end
8 r  `! G& k" _& G5 R+ J, B
$ w, L' t$ }8 V9 i[ 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.7 O) W1 b% m) x! P/ X8 N
, u% w8 \, R4 v" S2 z
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, 2026-3-11 12:58 , Processed in 0.023429 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