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[交流] 关于turtle的使用问题

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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:
4 `  b1 R* R* c7 A6 t3 Dto do-business 9 B& t* c2 J6 |4 X) @; n7 s
rt random 360
9 j( u  |+ A; m' _; @9 k fd 17 O( d6 R8 O% r6 \6 p
ifelse(other turtles-here != nobody)[
9 F( \& P0 s3 ^; s: X   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.) T" v2 C/ b) [+ w1 A: c
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * P; _" {- ]% u. |3 G' _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: L* ?% i3 t( N+ v; v* k
   set [trade-record-one-len] of self length [trade-record-one] of self
9 F" k% O7 f0 a3 ]+ h! J; y9 `! K   set trade-record-current( list (timer) (random money-upper-limit))
! @/ s$ w  k% d4 C+ H6 ^7 b
9 |$ j3 U+ H% a) f8 J* T) ]问题的提示如下:
) @0 `! G. O- C: H7 x# @0 x* H
( y+ A  m# @# d9 y: v- I: E. Xerror while turtle 50 running OF in procedure DO-BUSINESS9 {4 q0 \  M- b$ A
  called by procedure GO
! ~, Q6 G' z& Y# a) Y6 @) F5 bOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( x7 d; V% j9 n8 S8 \* M
(halted running of go); X& I$ C  Y6 C9 n+ t# L5 D
# n5 }& ?$ J( V$ a/ @/ l
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~~
" z( G  }! W0 [3 S" Q  v" W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.

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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1 n3 y* C) N: K7 l8 X
globals[
3 y* f3 _- F( Mxmax
7 n; X. U3 d# g0 U, Y% J6 a6 bymax: G1 D0 d# j& u
global-reputation-list7 ]% a& }/ Q9 |& J; K' a( s

% v9 p* f0 G5 a: d% c( e;;
每一个turtle的全局声誉都存在此LIST
8 S+ [% T* x5 V6 T. q, H3 {credibility-list
6 X9 k$ W: f* p( G0 o8 q5 L) e;;
每一个turtle的评价可信度
5 v% `7 l0 @( G( whonest-service/ T% s& {" e5 T- E- x
unhonest-service  E7 ~  I. |  j
oscillation
# N$ D' W6 J2 r3 V$ grand-dynamic. Y% r5 X  O7 I# @$ k
]% C6 Z& B0 P9 e. C
& C' ~, X  A- ]4 S' @. l5 f
turtles-own[
' i% a& a, m6 v9 t$ q# v6 Xtrade-record-all
3 U; q" H$ I9 y/ ]$ n  z;;a list of lists,
trade-record-one组成
( E) x# I) I5 A0 Ctrade-record-one* v4 U9 c# g3 v. C" r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 G1 A+ y5 ~* c8 R" v9 @, x

) R9 E$ H. y0 f. v4 C, D5 V: K;;[
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]]: D* f$ a# p+ ~) Y
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]
' t+ z! w. X- 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list& z4 j" e6 J7 U/ h+ J  i
neighbor-total7 W3 W( m) Y8 Q% U- n/ Z+ h
;;
记录该turtle的邻居节点的数目
% W" F* n) L- b# L6 ftrade-time
, o% y, f# P$ F# h0 r! y;;
当前发生交易的turtle的交易时间
% E- l6 j# Z0 W" t* Vappraise-give
! c/ B" {( R! z: x7 h& {0 ^;;
当前发生交易时给出的评价
& q- l+ @( l* ~+ Qappraise-receive
/ z0 ^2 c" z: N" W;;
当前发生交易时收到的评价
! |5 e7 A, \4 ^' zappraise-time
2 x% g5 R8 e+ K+ G6 E1 G- m  `;;
当前发生交易时的评价时间7 `1 `% [& l2 X7 w7 l: w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
. I* ?8 ?; ~8 K, }trade-times-total
8 J' I' i" O/ \- ]! W* h, ^;;
与当前turtle的交易总次数
" `3 \4 y5 A. ]9 {# C: Q1 C0 x! ftrade-money-total( T7 k4 p  ]5 {* c# h  B
;;
与当前turtle的交易总金额) E- L2 G7 b5 t3 @0 C
local-reputation
! R* o% h5 t. N2 Dglobal-reputation% e6 b: H! j( d
credibility! ]* U9 w- U; ^1 h& Z0 _1 _
;;
评价可信度,每次交易后都需要更新; R' Y; s% n( F& m8 v  s7 L4 C" E
credibility-all( \. g9 P4 [: B; a
;;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% V# p6 ?9 O- [4 K  ^3 k& i) @' j$ a
6 o( V% C/ O: m3 H2 g
;;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
0 V0 @2 B% {+ h9 ycredibility-one% z" D2 Q0 C+ l; x' B  W& |
;;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
4 |" R  f* F% e$ Y& Q' a5 _" I$ Tglobal-proportion5 `! {) z8 L0 ^( x6 C
customer
4 w; R% ~  }3 |( ucustomer-no
9 g' I) n: Q) Ftrust-ok  N/ }# t/ [- `. U+ G
trade-record-one-len;;trade-record-one的长度
6 z. c) n* x4 x, S! n) D]
4 u2 p! Q* V/ f8 f  P8 z0 N
, n% G' G- W' R* Z  A6 T;;setup procedure* i* ?8 A* I5 w3 A

! C) W. D3 L$ ?% X$ ^* bto setup
- ?& J7 V3 o6 W7 L* R0 s3 W; b+ M$ O4 o2 J
ca

; m2 _, a. {8 u3 d! j& N' q0 O% O1 {, O; v1 @1 ?' x( U
initialize-settings

+ S; n# }/ a) S( G  ~5 \  }; e7 [1 k4 ^7 A; K5 ~
crt people [setup-turtles]

+ O$ }/ t2 a" d" k2 e8 @% N  ~: ]0 ]' @
reset-timer
- S/ x$ O$ d- q$ g1 k) \. p0 N! Y$ C

6 v& ]) v; |% v% _5 t4 N7 B' hpoll-class

# _) U8 n$ r6 B( s' ^! c. \1 ?9 i$ \
setup-plots

* d2 e! H$ g# a% S9 P" M3 Q& u  ~
+ [. ~& r. r; Zdo-plots
  P# w+ C0 Z/ Q+ H
end
& u, r9 S* H6 d2 p4 b! g
! S! t, W" h& ~1 N, Y: fto initialize-settings! l+ [. f/ Z* t- [: w* L& x

- M0 y3 j3 i" i& d  D# i' {* fset global-reputation-list []

- M% k$ G- |3 i0 L+ ^% M4 y
3 ^) a3 j; P4 t$ M6 o! c; j5 d* _set credibility-list n-values people [0.5]
' U8 f) L; }9 z. t

' e% e- s, l/ P7 [/ n) N/ Pset honest-service 0

& V) t' j$ J4 u: q2 m
% A3 @- ^/ B/ e2 ?, ]6 ^set unhonest-service 0

" M' y6 d* k% \' q& A
6 _2 M; k$ c! A. u  Iset oscillation 0

8 ?: b. L5 H' P
: N( l+ v/ ]% R) W- [8 uset rand-dynamic 0
( ^* C6 o! \& ~, \
end/ Q6 A* S# l5 [& z' H# Q; F# [

# k- s& |- n! F" P3 @& @4 v2 Y* ?to setup-turtles ; V0 |& e$ [/ h" [/ V. z$ ~
set shape "person"( g, F, H6 I# N; T' j1 A" u
setxy random-xcor random-ycor6 m! c- D& s" [' l
set trade-record-one []
) m% w* j  c" Q

7 c( K( \8 X$ G2 D! pset trade-record-all n-values people [(list (? + 1) 0 0)] . I: O. m2 M3 b, U; \0 u% N$ B& V

  @7 ^' d4 Q+ y& K) f* b8 Mset trade-record-current []6 P% R- a5 Y# ?2 M7 }1 _
set credibility-receive []
" @; D# X$ x( |, p  y4 L9 \% X/ sset local-reputation 0.5
7 ~1 V& J: b/ a4 Wset neighbor-total 0( J( @# I/ n% F7 Y& h
set trade-times-total 06 H- _# Y) l' A  F/ A
set trade-money-total 0% |7 ]# T& z( o8 P
set customer nobody
- H: t7 j" o" kset credibility-all n-values people [creat-credibility]  I0 f# P( Y4 T
set credibility n-values people [-1]
) @* o$ ?. }7 |get-color
+ i& j: r8 C1 u& w* o+ e5 C

' n! E: M4 q$ y: m. h7 \7 C# |end
3 T" {) x% m' R% e" S( T$ f0 m, r4 m5 z
to-report creat-credibility
/ ~4 x) e& H: r0 T) @! {3 M4 u( |: {report n-values people [0.5]6 O, C$ D4 }* s8 V
end
$ W/ i* F2 V' ?4 ~9 }# w6 k) i2 s9 D
to setup-plots
# ?, c) b# M& G$ q1 S$ h8 K$ Q5 w" m2 ~0 }, _: Q6 v7 M
set xmax 30

6 R5 M5 ?4 J- W* d" |0 |7 p# `0 [6 D7 f) p
set ymax 1.0

! W! W7 m: Y9 ^! H
6 i7 D/ x+ E3 t' ^' _clear-all-plots
- c5 O; T7 F! M# J' J

# w+ P+ Z5 J* asetup-plot1
4 f8 v" ]+ h8 D
: d, D) Z6 ^6 R* p" e3 T/ `& I8 w
setup-plot2

$ s3 H2 u: e; E1 K+ D% t1 A- L) o' q9 e$ m
setup-plot3
- m2 C, t* c  m
end% |; `7 o; k# g% s3 p& v

" g$ U2 T) y! v, A8 r3 {4 c2 F7 U;;run time procedures$ _5 Z0 X" R9 h5 Q9 f

) T2 f, n, e8 Z6 B  \" q- S4 sto go
% u- A! ?5 j7 ]+ {& _4 q
. h) s. p- K  v  |) o2 A9 Dask turtles [do-business]

. s2 v% ?; }) T  m' ?  Fend* p3 \) k* _; k0 w, a0 |  e
% Q7 N6 J. F2 g
to do-business * \% e0 w' n# @, l/ B" v/ w

8 i' J; O2 n" W* |/ n, J7 w! X; O% [& x7 `
rt random 360

. R* b# [3 W: f( A1 O6 G* N5 l/ W: C* d- X- r# o  k4 ^
fd 1

& @- v5 z& M% `' Q3 r! D. p5 }5 B2 t9 R
ifelse(other turtles-here != nobody)[

. L/ h4 n! Q2 ~' H# h# S! \8 i0 u. W, k3 @& ~! W/ K
set customer one-of other turtles-here

' H0 F% m9 [  G! M+ f0 u" o
% @) o7 N3 h3 _3 W& K+ \4 n;; set [customer] of customer myself
5 ]7 o" `& T0 ]) Q1 i
( n) P$ W8 H  I2 `: B
set [trade-record-one] of self item (([who] of customer) - 1)5 ?7 ^8 ], Q3 {; I" w4 v
[trade-record-all]of self
- t* D# W# v( F& z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 I2 j. S- n& _
8 e! f0 W; p5 I" ?0 xset [trade-record-one] of customer item (([who] of self) - 1)
+ L+ _5 Y4 Y" ~. g4 T+ f[trade-record-all]of customer
0 e0 u1 E; @) v9 ~# s0 _9 s% Y
$ V4 m9 Y3 l, d
set [trade-record-one-len] of self length [trade-record-one] of self

3 O8 j& G9 T( o" `
( i- g. D' @- z9 Uset trade-record-current( list (timer) (random money-upper-limit))

% i# ]- _1 _9 j. a6 {3 ^7 M" ]1 x3 T, {* P7 E. {
ask self [do-trust]  M( I4 S4 n$ W0 _9 B( m
;;
先求ij的信任度
0 a; L6 ]8 N1 y* R/ i
( O+ R8 i1 G3 f* _$ v& dif ([trust-ok] of self)
0 M' L2 y, a, {0 `' a0 N3 U;;
根据ij的信任度来决定是否与j进行交易[7 T! W4 G3 @& Y! ~" E. M5 p& d# Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ F" _- {: z+ S7 m) u

/ U6 m8 P4 D) ^2 `& u; d[

& i% i  Q( D! P9 s( H4 l2 w" O" w$ x8 t. `$ |& F7 M' y1 Z: d+ i9 i
do-trade
  e3 [+ D5 P) m7 U. ^

9 ^, V2 o2 X* W/ K- p  D2 Y( l* zupdate-credibility-ijl

3 h4 Q( g) V% m% q" ?8 x9 _8 d1 \! ^! j
update-credibility-list
" F; C9 p' g; l9 K9 M
9 O0 C' h1 ^" w

; g& ~: X" r+ j( Q$ L" gupdate-global-reputation-list
. Y, m; v+ r: j  D% V/ [& z' a

6 K) E* ^  y+ npoll-class
% ~2 P' }0 s+ E2 q2 |" a5 q

! n! o. k1 R; W4 o3 ]get-color

/ i# ?  m  K' G  z# b+ G
' c2 ^* `, X/ S7 X# V]]" a: u# d, T0 n' q8 Z
* ?0 m4 p; D9 c6 {. Q
;;
如果所得的信任度满足条件,则进行交易
6 H5 p, J% u! k+ w  C& _
9 P% F7 A9 c8 |/ [2 ][

2 F/ z8 B9 S8 S% O6 b  ?7 U9 l  I2 r- b2 B6 V3 e+ T
rt random 360
9 x( b  _0 M! B2 x$ ?
8 `. v( C, S. X, Z
fd 1
) Q# @4 h$ @" w5 C. S! y( [" U

! a. E  h) }% m# }" S& [' E]

$ N; X8 t+ ?9 L+ {/ s$ ~, }8 G2 x; E
end

( b+ e/ B+ C5 x4 o4 z  K+ S  {/ L5 r' p& T: S
to do-trust - p# \; |, u& R" B) r
set trust-ok False
% j; e9 d/ `: N: j' O/ ^
+ H- |0 f5 ~' w6 I

/ B# C" N0 ~& }& Y' ilet max-trade-times 0
* U1 H* t- D, l& w! Dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 A4 M7 G+ }. t4 m
let max-trade-money 08 z- y: q8 f. w2 l) X! B( V
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 J$ Z# N; V/ p  s; p6 j5 ~
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- U2 k; D; V! F2 \2 }; p
2 h3 o3 ^/ ?8 f( Y, O* N, S+ {

6 u- d$ l! N+ {' Dget-global-proportion8 N& A. L) l2 ^$ I
let trust-value
2 s8 w% d3 h% G( Ylocal-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 Y- B8 ], a6 _; M" Y0 _
if(trust-value > trade-trust-value)7 m/ e; L- t/ E
[set trust-ok true]+ C/ H/ G4 [( D9 l% o
end4 U& p- [- P0 y& Z1 O7 W8 h% c% W  H- R0 [
. N& @$ d3 b& a% ?2 T) Y
to get-global-proportion2 J5 ?% B7 q1 M# x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 D3 P- e/ \% M0 Q( Y" b) w
[set global-proportion 0]
$ g$ m( u/ u( a' o[let i 0) N( g+ |* D" a/ e/ t( U+ E
let sum-money 0
6 q5 r- B) X2 _! c/ j6 Twhile[ i < people]& U; q0 \. i/ O9 i6 d2 i6 |; P7 Y
[
" q* t+ ]; @% p& |0 c2 A+ X' E" m! aif( length (item i
8 @( Q6 z5 D, z& ~/ |. n: T5 Q! X[trade-record-all] of customer) > 3 )

9 ~  X9 l/ n! e) w& I[/ h) X  s" r) P* j
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 L" N) ~+ I# p) D! d: ?
]( h) K) v) R  [7 J
]( u0 h* e' B& q" A0 F8 D
let j 0
# B! X$ S+ \7 j+ E7 }3 a; _let note 0- ~8 V' `; n% U0 A9 ~1 q8 y4 c
while[ j < people]
: _5 `& g% U1 D[
( z; C/ w; f  c5 T4 [if( length (item i- H& C" I2 ]1 U/ g
[trade-record-all] of customer) > 3 )

8 P6 H" O0 f1 r3 l, [[2 `; X. Q, Z) m2 y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, e, ?3 a/ M. E$ c" V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 N7 T8 F: h1 W4 ?: P0 C# E0 S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ e2 z' z* r' I3 l) }]  x2 c3 r2 N4 V5 F6 ^' v
]
4 B: \0 H5 ?) l5 a2 Z, h2 Tset global-proportion note( V: O, f$ Z' q* E$ K1 R
]: t* [9 M: I# G  f
end
+ f& x6 P) w2 A/ P0 K5 \$ A; V2 y$ ~9 H
to do-trade2 w. S# O9 F; b& _
;;
这个过程实际上是给双方作出评价的过程3 {+ {! r) b  i- g1 B4 B4 Q8 j
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
" r* e  V  S5 R& _, i, a0 v4 \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 C% _. c/ u& f4 E
set trade-record-current lput(timer) trade-record-current5 `/ x- `# o0 c& W/ m
;;
评价时间8 P7 |; f* k0 c2 X' Y7 E! r+ c
ask myself [
# j& i3 ~* X) [update-local-reputation! S- r3 e* v: S% c8 R
set trade-record-current lput([local-reputation] of myself) trade-record-current
: [' z  M3 {5 G* P% J3 x# `]4 Y' f  J% [9 z$ e& {0 j
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# a! }( M8 s. p  I* l6 Y
;;
将此次交易的记录加入到trade-record-one2 \! \% h) |* O0 t. G, y8 g
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 U' K6 N! z- v6 K, F6 S
let note (item 2 trade-record-current )9 t5 n! \9 Y# s: N7 ~  E* I: _; R
set trade-record-current& G0 H5 s0 Q$ K8 k1 B: a
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ Z$ H/ b3 s' {7 s/ A$ y
set trade-record-current
. ?4 R( k) A, x* U0 l(replace-item 3 trade-record-current note)3 y" Q- E& F: C
: {, E4 r9 ?7 S5 |4 B

+ w! L, F# v, `; [6 B9 X# y+ xask customer [$ a; R# H7 E/ p  d
update-local-reputation9 f3 f( ^4 q7 [5 @! j% u1 I
set trade-record-current
+ {/ j. }# T9 }  N- {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. Z- y- f; x1 N8 Y) T& }4 v: }
]3 d2 C  u3 k# f% @
' R! E: u+ D# d% |& t  q! r

$ U8 E/ h' }0 |, R1 Q: E+ w/ Nset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# o  W: g1 l4 U) x3 e

3 l8 X$ c: \, p& v7 [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 R# D5 @, `* }1 ?% O  m+ K1 |) {;;
将此次交易的记录加入到customertrade-record-all9 o6 r/ Q0 D- ^) d' `: o2 n
end
8 z) ?) P' v; t# `$ G
* l9 u: d3 e! f: D; W5 V+ vto update-local-reputation
, ]) U/ ^0 B- s+ q: g) Vset [trade-record-one-len] of myself length [trade-record-one] of myself/ d8 K. S0 O7 {$ z2 k; m! E4 `& Z! e
: i# r6 W5 l$ g
5 x1 Z$ n$ g6 ~; E# ?5 e5 s7 \
;;if [trade-record-one-len] of myself > 3
+ ]& q& |4 C5 t( L' X
update-neighbor-total
; n! J0 D, U/ W;;
更新邻居节点的数目,在此进行
8 x' r' c1 `' |& m/ l5 d! Klet i 3
" m! G/ H3 S: w3 E: \9 L8 ^: clet sum-time 0
' h5 {% D: D  k0 J7 B$ {while[i < [trade-record-one-len] of myself], S, O0 J! J! H. g1 e4 p5 }
[
- P% J  ^$ l; G8 ^set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )( q, ]  K- |) R) N8 @
set i
  W! p/ q' g7 J) _( c( i + 1)

1 k1 g0 |% U+ l: u& g% t* O]9 k+ n) f; A& E! d) ^+ t1 o& s
let j 3! H3 |9 e" \, U7 l# p
let sum-money 0
2 d1 J0 _! y0 E) {7 Lwhile[j < [trade-record-one-len] of myself]
: Z; P# T( z$ c9 Q. {5 S, W# |9 O[# `! o- w. l7 A
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)
0 w; s0 ~* ?9 Mset j
" y6 s; x- a8 y+ [7 `# }. Z# D( j + 1)
, [, B8 k" w# {5 b
]
" H+ v5 v$ `# w$ Y5 D' c$ I" Jlet k 3. C/ P5 |; }% b1 o! h) O8 O
let power 07 c! z" x2 `( f8 u/ k) R
let local 0
$ p% k. T& G" `while [k <[trade-record-one-len] of myself]
7 t6 ~: W8 _+ k6 a/ ^4 u[
6 g! U9 v* s& \: Lset 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) ! Z, E! H- `/ M0 w: L
set k (k + 1)
( s8 w+ P$ F0 I1 V3 c2 G0 _2 []
6 t1 m4 i9 \' j5 m( c" Uset [local-reputation] of myself (local). A; e- R* ~6 D0 u) U. `  e' `' l
end
9 C8 ?3 L% g( C) K
1 M. `6 J+ C& Y5 R+ cto update-neighbor-total8 b2 c: @% R1 K' u2 P( v

. r! \6 N. A1 ?+ M- \+ Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], \+ u. x9 A* g( B& A

3 {; B( U  H# \0 y% H
2 p& N7 Y0 k/ X' }4 n/ ]/ Y
end, X# [- i4 ^6 a9 E/ Y6 j

2 x4 ~( a& |! a' nto update-credibility-ijl , A, i& S; {) v/ R3 x/ a. \5 O

# P+ n) N; u& M# ]7 V3 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。% u) o$ M( L. N  V, z$ b# D
let l 0. T5 b, m: x0 f4 m: L$ _
while[ l < people ]7 o8 i$ V/ J0 p+ S+ Q
;;
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 p4 v; E3 t- n4 _" e
[
2 M9 t% G: |) y& K* zlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
4 t( A  p$ y( a9 `9 |if (trade-record-one-j-l-len > 3)
1 q+ E3 O7 }4 A( J. g/ p" Z[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$ a7 Q' L1 Z; x
let i 3
" o: }) l. e) S, _& W1 S: Tlet sum-time 0
% t3 ], P) F; ^/ X# `8 m* q! dwhile[i < trade-record-one-len]8 o. N) |5 e/ e$ Q; s9 _" E- }
[
8 a) j. a6 V! c9 \$ Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 z& I  B( H0 l2 X) }
set i6 i) p! f4 o" O# G9 \- h9 O
( i + 1)
$ E1 `6 s) A% P0 Y
]7 v" b$ A; ^& o8 Y. w6 A! r# L& v
let credibility-i-j-l 0  N, h" p$ g' [8 R3 ]; w
;;i
评价(jjl的评价)
6 @  J( W7 [2 j; B2 q% l/ r' D: flet j 3/ v' C2 f& |" h( v. n& b; N8 y
let k 4
8 N' f9 r' ]0 ~9 nwhile[j < trade-record-one-len]
) g- w" K+ o3 ]3 f% [[. W1 q/ r# l' |8 r
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+ A4 ^) h( B4 G' m+ N& l
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)' U, P: h0 \2 _4 ^1 g
set j/ Z# Z$ H6 g: G2 X# H
( j + 1)

1 }6 g4 p6 ^& P) r1 I( t]9 H$ w) A# f2 l! v% F
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 ))
4 ~- S9 z- i7 a  [
7 m$ [5 A/ u5 N2 S; Y6 K; F; O

  q0 @+ v1 R% ~. [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- ~  v3 h3 O8 o7 }8 y/ m* w' E5 h;;
及时更新il的评价质量的评价
8 w: C- }8 x2 I; N. B9 dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% \% c2 D5 u. P2 o) O0 D
set l (l + 1)
: ?0 O) s2 X+ p+ s9 r9 e]
# {2 \! N9 z- ]) V6 ?end
* s) }5 H$ j5 b3 p& K) D
" h* q$ T* [& t6 o( z% F0 `# |5 V8 j5 Ato update-credibility-list
, X' B) v( g, xlet i 0
+ E, H9 e/ b+ C0 Swhile[i < people]
, ^, c4 D( N/ s& Z2 u' x[7 j% o- p* U4 ~1 U/ ^
let j 0
% a. A0 z- x7 \, e' O, `9 t# O/ |let note 0# x. t5 j( ?; g. e0 [3 B( X2 @
let k 0
) m: B% H8 e% `  h* N;;
计作出过评价的邻居节点的数目
% ?- S0 f+ W: M# c/ [3 j, x! Pwhile[j < people]% I7 F, f& u4 C) w
[
* s# M4 u( `# s: k( Q. h6 Pif (item j( [credibility] of turtle (i + 1)) != -1)
+ p2 a) ^3 p3 w8 G;;
判断是否给本turtle的评价质量做出过评价的节点
1 r8 g8 u1 W* B: b7 E, s% V[set note (note + item j ([credibility]of turtle (i + 1)))
( T5 t' y% J" p* N3 s% \6 u;;*(exp (-(people - 2)))/(people - 2))]
" p5 _: J/ F  S* T4 P
set k (k + 1)
6 z. N- h8 s4 M8 I) p; \! G: s7 T]" C: m  S1 E( [6 z$ K( {
set j (j + 1)
! [% ^" i$ _2 g5 w% ^]
: @; Z' W# e( v# S0 v/ uset note (note *(exp (- (1 / k)))/ k)
4 V, q5 @9 M. Q1 T1 oset credibility-list (replace-item i credibility-list note)7 \0 ?6 [9 a$ x9 k
set i (i + 1)& X+ g' `& s3 U; B' q1 S: n
]
  K2 T# v  |; j# r3 D! Eend
4 d7 I. z. G; M
$ y' v; s) C1 Q" n! m" C2 sto update-global-reputation-list
' Q  X/ H7 G/ S5 J0 elet j 0
: S" i# t& h8 y5 P" Q9 M/ Pwhile[j < people]9 F- x& [( j; A0 H
[6 e' T3 v3 E9 `+ N5 t$ P* k0 j/ P
let new 0
, X, M2 @& A# N& r% k6 a5 k" L;;
暂存新的一个全局声誉
3 ]0 ~+ q8 X+ R/ a, @let i 08 c- y# f* ^4 g# d: Q6 X
let sum-money 0( Q; o$ n  J, ?: N
let credibility-money 0( W, z, Z: `: T3 W* y( z
while [i < people]
  U: e7 W' h0 s1 n/ K[  |/ |" [! n/ l: g* Q( [! i7 g1 }
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))); |" [* s4 ~/ ^! n. c6 p- C
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))% k1 B5 W' t- @+ |% G6 C' w" x5 R& d9 O
set i (i + 1)( C6 Q) l5 D) G: J$ j: w1 \0 [
]
/ x' p/ t: T8 p. y/ |let k 03 `. Q/ x7 u' f/ J: {0 S0 S, A
let new1 04 w  s" y8 l1 Y# }4 C2 Q: i" a2 {/ _# S
while [k < people]
  P, a& T& p# p5 K[
! E9 C0 G# o' {. o6 G* n; Gset 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 a0 h: T* U! r+ I
set k (k + 1)
; p& G& G; m* Y7 R. C3 I3 t0 W], a' E( G. V9 v2 m9 @
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / I( A, G8 `9 A4 ^& n
set global-reputation-list (replace-item j global-reputation-list new)8 L% e% l; m/ m0 S
set j (j + 1)& _$ N, v& X) x/ E4 x. n" @0 K
]
9 a/ s' ^3 l) G& Q" zend, l" x& t( d% L8 b, p

* I  t( M4 ]2 {; C$ K( K5 Y; f4 }. {
) |. F1 |: r4 {7 L! P( k4 L
to get-color& p1 A( l. {+ W# h5 x
: A( Q4 z' ^7 p0 S- x$ X7 W
set color blue

$ V0 C% C/ Z& V4 nend
( K6 Y* w' K; [( V- d% Q! ^* ]& _: W# C3 w) m0 l" K" ]  T$ f" ^# l% w
to poll-class& E, G9 Z9 @  V# p+ F* w- i
end
% [8 ^: H- r: {) }6 e! Q
$ u! U7 b3 N) gto setup-plot1
  c+ q3 y! v* H' g, g  t6 C7 p( A
5 N0 ^: a8 B9 \# J; m5 Aset-current-plot "Trends-of-Local-reputation"

" u5 f! K+ }/ v- H% E8 Q# x
0 z7 ]; t, ?0 A0 b) c. Aset-plot-x-range 0 xmax
7 A; |6 T+ W0 {& P
& U6 Z5 W& R( L; d. u' c
set-plot-y-range 0.0 ymax

% |- Q" H. `4 c# F( o' Gend. ^& c8 O1 W" y+ a

% \- J% f8 O; G# zto setup-plot21 R& a/ v0 N& P8 a4 R  K

- H3 o6 Q! y3 g5 E. G2 z0 Tset-current-plot "Trends-of-global-reputation"

/ n& {9 }8 U' B. C& K+ R) n- B7 k' S0 H  n
set-plot-x-range 0 xmax

1 U9 B: y- a9 `0 Z8 n. P$ {2 X3 Q# c* }6 Z) e
set-plot-y-range 0.0 ymax

4 C+ q1 @- {, x3 V0 U9 fend* B* z/ p( M! e& @$ L  I; W

3 Y! j3 v; U+ ?) \- B/ ?to setup-plot3
: V8 p& k! }2 w3 C2 u) T
) S) \0 f! e1 l" k) d1 wset-current-plot "Trends-of-credibility"
* E# C. w2 \) _0 C( l9 x

% q: @5 ]/ g; l9 W( r2 E8 @# L$ Hset-plot-x-range 0 xmax
% V1 n. I; ^9 b  L" {/ ~

: e/ K7 D7 Y1 g, iset-plot-y-range 0.0 ymax
- a3 F  H  c# i- |4 R
end
! x: `3 V# r( V3 R/ y, Q* ^. R" c4 {% A# l$ l* O( v9 E
to do-plots
2 U  M$ ^! ^% ^$ zset-current-plot "Trends-of-Local-reputation"
0 E8 o$ T: `: T% N- [( eset-current-plot-pen "Honest service"4 z+ G- r* b& z2 a4 [
end- B/ U* V4 w, A* Q  S$ ?3 q

0 H0 }- \; E% K! X[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.8 @# |% b. ?/ e/ |2 H+ P
2 U: G& Q* r1 `5 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?
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