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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:% c2 T8 z4 X; Z. x9 B" u
to do-business * x5 Z5 k5 s+ a* m- I! Z" S
rt random 360
' ~" U6 R7 R; z, p& K5 F* }1 S fd 11 w/ k5 {+ }& X8 N% U
ifelse(other turtles-here != nobody)[6 @8 g9 e! y  N
   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.! H, }5 y6 F& B' I3 P
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ F9 Q2 V  o! P5 `# z6 ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% Y, K7 r. j( L3 G   set [trade-record-one-len] of self length [trade-record-one] of self
/ v9 @' f' `/ k# e5 T4 Y1 k0 K   set trade-record-current( list (timer) (random money-upper-limit))
* [" i/ |, X  g% U4 v# Y7 q9 Y0 U) D' [
问题的提示如下:2 s+ m& m6 p& j1 Z2 C9 e

# @' n" b3 c% j; u$ S4 c( c+ _$ aerror while turtle 50 running OF in procedure DO-BUSINESS
9 h) H0 g3 h: R8 p* J) G4 h7 H. e  called by procedure GO
% U  u  F* I2 i2 s# n! q6 pOF expected input to be a turtle agentset or turtle but got NOBODY instead.
* H; J* H$ H- W
(halted running of go)$ N6 I- }6 b- O3 Q. Y6 M' A

+ P& w6 t: x( }3 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~~
0 k& `/ A  m! o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6 A8 P0 `' C) e9 w7 c  g
globals[
; W% d# o6 ~4 _! sxmax/ a$ r3 S8 @# `5 I# N, ]
ymax2 O& Q8 t( h4 D+ G
global-reputation-list
7 s2 F5 V( b0 Z# h* o; e- }2 P
' k- \6 U+ ^) ]1 X3 R2 j2 r' i: q: I;;
每一个turtle的全局声誉都存在此LIST
4 F, o. N3 e( w6 O" Qcredibility-list
* T/ n9 h1 q6 S3 {;;
每一个turtle的评价可信度
6 U2 B6 p! Q* E0 Xhonest-service! i# J; j. y* B6 J0 r4 z2 [
unhonest-service' g( g  ^* Q, u+ u+ ^2 y0 b
oscillation
! O2 [8 R  ^9 S* c( z% z; j/ Hrand-dynamic
" U# i4 ~3 l/ Z7 |]
4 A% N" t4 {) \6 J; I% N; d1 D# K2 J2 c) S+ z( @
turtles-own[
9 G+ V% N, ~/ V: |8 M. W3 W" Ltrade-record-all/ S4 d3 b6 {& o4 _9 J
;;a list of lists,
trade-record-one组成& O9 x! ]$ I/ o" S& J9 [- G
trade-record-one' K. h' h, \- ]1 `' J6 L
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 d% a4 T3 u% O' t
+ _' _  Q5 |9 v% w* s2 q: y;;[
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]]
6 E/ P3 k+ ^- u: Dtrade-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]
3 i+ c: P6 X8 n; ]credibility-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 t) t; ]0 m' L$ b  O! l+ W
neighbor-total
! l" Q! K1 _3 ~/ o0 ~9 W;;
记录该turtle的邻居节点的数目/ U1 L- e, l* j3 Y) m
trade-time
* m9 @' D2 l# }2 H9 _$ ?;;
当前发生交易的turtle的交易时间
3 }; p) B/ v+ r+ t# Xappraise-give
& j4 J2 s: K1 [% Q9 X1 G2 t# q;;
当前发生交易时给出的评价3 [; G. l+ a. k$ F4 C
appraise-receive
& S& N6 c- v; X% q. z3 M2 w( R;;
当前发生交易时收到的评价( j& q! f' f% c) |- V. R9 u$ h
appraise-time8 A2 k3 j2 `. i3 f8 P" g: r
;;
当前发生交易时的评价时间( R0 O. m1 k" v$ r$ o
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ U- }: c5 }9 X
trade-times-total
/ N4 b3 g3 E& s) _/ v$ y" v& u6 g3 w;;
与当前turtle的交易总次数
' J) z+ |) U+ n0 Itrade-money-total, E: W2 Q. d1 D4 D- U
;;
与当前turtle的交易总金额
1 X& G) E2 }$ H) \+ E3 J5 x# Wlocal-reputation
$ g/ x: y7 d" rglobal-reputation0 {' F2 {: n+ ~7 t
credibility/ S( f, i  U0 Z1 I! }5 \
;;
评价可信度,每次交易后都需要更新* w" A" m# I& q7 Q1 w7 {
credibility-all" b  S4 f! a9 X' x% T/ L
;;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
& u0 b$ w/ h! l0 f/ ^/ e5 s: y; w6 A  ^4 B" I* 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
  j( k- ^' K& u8 lcredibility-one
5 S" l# |5 V# p;;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people5 B  R# t* d. |1 X2 r3 s2 t  ^
global-proportion
$ L, _0 t) _1 s3 U/ f1 K" hcustomer
  z0 H+ a+ \$ C$ U5 C$ L6 kcustomer-no
! J# p% O# U' y7 z% [+ P$ Utrust-ok
- \" `8 W/ D) }" N% b  F6 y) }trade-record-one-len;;trade-record-one的长度
- O% z7 E1 L  d5 |]; b7 m, j2 r+ w! v' n  H
7 G9 o0 w. D( p( s% k% ]2 R/ e
;;setup procedure
; Q! E; A2 @4 U( i( P* t3 [
) b4 z5 ~; ]) h0 x! ~to setup- u7 P7 Z! t6 |% P* D1 A0 E
4 w" B1 y7 E: u! T! K: Q
ca

+ {* n6 w7 d# Y) c! Y2 r
' K3 r: T- W6 Tinitialize-settings
# t$ J7 c+ M7 O: [1 [6 S" v- ^

8 F* U1 E/ \" f" ?' V, ^crt people [setup-turtles]
4 f7 Q0 Q4 ^# e
( I" l# N6 [% U# Z
reset-timer

# F7 J9 x! K5 J* }/ w; u. |& ?  ?. h. n" |/ D  c8 [( t
poll-class

5 W  Q8 t8 \1 e8 }
0 S$ a9 I, d  T) \" J0 fsetup-plots

, A! s% s9 t1 }  Y, M( i+ A6 T
) U4 V! z) G, K) ndo-plots
( |1 V! F( @; v
end4 u9 e$ L/ q3 D1 k
( p- s: ^! o+ C  _1 l; R9 F/ c* D
to initialize-settings; ^2 h6 R. ~" F( m

0 Q) m) [$ o' P* ?3 Dset global-reputation-list []

  j" D# {" ]) K4 g7 s4 D8 U+ T, |1 h" ~* L
set credibility-list n-values people [0.5]
0 S! W7 \5 k# U. ]1 F: r! o

& L2 v1 P2 x% ?, Y6 H9 jset honest-service 0

( L# [5 Q# Q( S! ?% n9 E' ?$ j- ?$ J2 H6 k* W
set unhonest-service 0
5 }4 _2 Q" e" ^# I( V0 b

9 m& u2 ]" P9 {) N& f7 O: ?3 kset oscillation 0
4 C* z( P2 w/ O5 B2 F8 x/ {1 t* C

% h" n. _' l+ [- m* U. d0 bset rand-dynamic 0
8 L: E8 U1 Q+ D) {2 p7 g
end
' D, F  o: g6 b) Z2 z* ?3 [
; \$ x9 h" }$ Xto setup-turtles 9 @& f* X  _0 `
set shape "person", m5 b2 x- ^- I7 p, d& w% k- V
setxy random-xcor random-ycor
. N0 ~. d4 h* U7 K7 \2 bset trade-record-one []
; x0 W0 a# Y9 I3 b4 B' w9 `( ?
' x  D8 X* _$ z: D9 c# c
set trade-record-all n-values people [(list (? + 1) 0 0)] ' r/ V2 _5 B7 r& c1 \

: L) m% _( F4 S- _set trade-record-current []* l' _) f0 I% Z" @$ T
set credibility-receive []
8 q8 S6 {, i6 G( n! C# O$ K* a3 iset local-reputation 0.53 m2 L& }# ^0 n
set neighbor-total 0
& {9 x: R8 o/ G3 n8 k+ jset trade-times-total 0
) a0 a) ~) l5 p; `3 n1 H1 }set trade-money-total 0) l7 L! \& F1 k* l- m
set customer nobody
% G' i3 W4 D- e! j4 tset credibility-all n-values people [creat-credibility]
7 }1 }  W/ J  Y3 }- o1 E; Rset credibility n-values people [-1]
7 g' z3 k6 J1 d% W# Z8 [# Uget-color" ^0 I* D9 r. F+ s
0 u3 v. C- `, v
end
; ~. D3 Q8 O+ }7 M& e( A, T% ?
to-report creat-credibility
5 B- s. Q/ r2 preport n-values people [0.5]3 V4 g. Q# R! K+ Q) v4 I5 F0 c
end/ f, S( w  j( ?7 R; c+ d0 ]0 B

5 U8 v+ d( a7 h" b' Wto setup-plots
* }. l: W" A5 p: D) G! l, B2 ]
! A$ ~% F" W) ?: o" j$ r/ P8 Tset xmax 30

8 R) c# r# i4 i' m7 J& ?' l, r- }/ F( }7 B" t7 C& K+ J
set ymax 1.0

  G4 Z2 S" P  t& V( a
* g0 C: M; n1 D$ kclear-all-plots
& D2 P+ l7 P3 x" r9 [1 M6 N$ u3 E

2 {; H3 i( |4 z+ \setup-plot1

1 R8 y* W# Z; [% n5 }- P
7 c4 V' W' {7 H  d# esetup-plot2

2 K8 o& g2 y% X% n1 p* R) i
2 W7 u0 V; ~/ ~: D, q# |1 {9 O. Isetup-plot3

; f% P0 _! y5 p1 ]end
  h# A3 }6 f  Z5 ~# l( E- d/ g! J  m, p! H6 }! m
;;run time procedures
& P! x; b1 m1 K7 r3 [
* F) _- F$ |+ n3 n. vto go
0 C' A! }/ Y; F2 M" Y8 l' Q  q: Z+ V5 }5 K2 l9 y
ask turtles [do-business]
5 V8 g8 l3 ?- m. h* I, r& f; b
end, e5 M; K6 S6 `4 ^. o, _9 G

9 D2 Y. e* r7 n) R0 nto do-business
- L: `' Z8 }$ M, F/ Q3 ^: I

- {7 \$ ~/ g: E3 m  m! Z% P
/ |" t4 l: z( I  Frt random 360
4 n1 b# ~3 v+ [

% D; r% A8 [# B: q. J. Tfd 1

+ [1 d7 }9 L( m2 Q: f* t
& w5 @$ ]+ S8 nifelse(other turtles-here != nobody)[

. ]5 w* E8 r: |  i  i7 q% U5 _. U: i$ i- q2 R: q: w
set customer one-of other turtles-here
/ y8 d& b' Y  I
) k" ]! G& g" g; I  `6 J
;; set [customer] of customer myself
. X$ f9 _+ U$ e; G  `
; t  S; d% {/ X" x0 ~; M
set [trade-record-one] of self item (([who] of customer) - 1)# y" a; R- a* `; q; B% T
[trade-record-all]of self
1 @0 x( U- ?# _" ]; `0 b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) [  K; Y) D; t8 B" n+ ^
9 c/ C# L/ E" s  Q+ B# }
set [trade-record-one] of customer item (([who] of self) - 1)
0 {4 q* T! Z! x/ [[trade-record-all]of customer

1 {. E- z# v% C0 y% T- E3 G* [. M1 O- r0 e8 p3 g; U5 _
set [trade-record-one-len] of self length [trade-record-one] of self
$ U& v, B1 y6 I7 {8 `8 G* E: n
% @0 `+ l, T8 o9 A( r' W
set trade-record-current( list (timer) (random money-upper-limit))
; [3 I2 f7 l+ \1 L) T
/ ^. T; W8 a! o
ask self [do-trust]* t  m' v. U$ y
;;
先求ij的信任度) @$ P9 h5 p: q* a4 n9 S6 |) s- w
  K8 K) D# S* z# e  G
if ([trust-ok] of self)
$ I, b: g# v! x- U;;
根据ij的信任度来决定是否与j进行交易[
6 ^5 V: c* J7 Z* H! h& cask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 P# {8 U. E/ a& F3 Q

, T# ~6 G6 p9 B, L( |- p( c4 B[

5 k) R9 e) _! o! v& G* ~5 I% b0 {2 z& [  ~# L
do-trade

; ^: U9 i* t2 i$ E  A: b
( K  L. p$ m) g; l9 k- c* z, Dupdate-credibility-ijl
" [: H; i* J8 z& g

' O; g. x  w- Oupdate-credibility-list
1 [. F- n- y& h% o# V, G1 O
  z7 J2 J+ F" n- b0 k
  }2 L- c  i7 X# \9 W; b
update-global-reputation-list
  f: D0 Z; W  L; Y6 C$ H5 w
( ~2 s" f( ?& `4 h
poll-class

' S4 c& g  c1 t
  [: @' o' U4 [, Lget-color

2 d/ y, r, U) n2 H! {1 e- z! q2 Y) M* g! h& Q+ W
]]
, l; |% Y# T! R% M" Q- u% ^; h! P$ Q# |) {" c0 X' s
;;
如果所得的信任度满足条件,则进行交易
, g. B1 v+ b* {! e$ |! W
" C1 [. d$ N8 A. l- D9 J[

3 G# _" h! R( u! I
' b3 z/ B6 u. y  |rt random 360

' E1 ?. i) ?/ Z
. M" }* i5 B( j( y% n( ]fd 1
0 W1 K3 V, `& h' F: g3 k

9 q8 c; s) Q) S5 h. H3 h9 `]
3 q8 E2 N5 k. ?7 Z) b" ~
) i6 I: a( R, r/ n4 c" [( k* F2 [
end

' v; J$ T; R. _/ n) e) L: W
/ N9 K% h! ~+ N9 C, t9 n7 A/ dto do-trust
- U0 @( z3 N$ L! h; n" Fset trust-ok False5 Y" `8 w% f# [
6 w9 @: N; J1 m; f) }$ P. O

- w* h. s- U9 Vlet max-trade-times 0
3 H& C. g( D5 ~. s2 Wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 a% P! s7 q" Slet max-trade-money 0
. ^3 F3 r3 v$ X8 ]2 b) Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 n- m" T9 P4 F4 g/ t: j3 J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 a% S8 {2 s: s' S
* k( \9 V5 Q/ F1 w0 \
, z6 g- F5 V/ o) |! l8 z
get-global-proportion
; \' M+ J% G2 i# D+ s! clet trust-value, t; [* Q, k; V9 D1 I
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- H9 f1 Z& i1 z+ w
if(trust-value > trade-trust-value)
8 h; [: M/ f4 ], S4 K8 j[set trust-ok true]) y' v& s  _' i5 [
end
- c; n: i, o& D( T# ~! {  m( k0 M& `
to get-global-proportion
( S! a* F. E* r2 F3 e1 @: \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* H, J2 `- j- a( X( Z8 D  ~
[set global-proportion 0]5 |" d* `  }" @( s
[let i 09 r5 A# @9 \) t" R" T3 J
let sum-money 0
% q- g* h. u+ R, j: ?0 _: G' Awhile[ i < people]
% u: B- L* o2 q2 v[; n$ T0 H4 b3 p
if( length (item i
' D8 K5 x: \" c0 Y' c# m[trade-record-all] of customer) > 3 )
. M5 K) m+ b2 v$ s; A+ t3 `
[3 _) V5 g6 j8 t# _* \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 w1 U3 w* y1 k' J' s1 [, \( W]
  [3 t& Q; W/ v7 r) d]$ B4 f+ h4 k- q$ a/ B  u
let j 0
( G% F; `5 u% J6 f( |, q# ]let note 0% @4 U4 u3 t) d* A2 O$ n3 @
while[ j < people], R2 g- F/ s) k$ e" G; b. Y
[
# B) e+ ^! ^( b) f3 r8 [% C% cif( length (item i- d! W2 \2 A1 P8 v% X4 c
[trade-record-all] of customer) > 3 )
6 D4 q2 C, ^  G* d: {
[- C3 i& {. r! P" Z: A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 T/ i- R: k: }7 S4 \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]$ g8 _, P3 F/ w! c
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% D3 B4 {: N9 j' A! o/ `$ h* Q
]# V& o0 U& F. H/ @% \, B6 K
]' f( o) g1 m* s' d9 k
set global-proportion note7 N* Z8 E) ^( s
]
* J8 B- w% a) t" Q  u& U" Tend
2 U( K5 ?0 w9 u7 s  [7 |+ H1 M# K
to do-trade
  u0 A& x) ^) K, o;;
这个过程实际上是给双方作出评价的过程* ?1 }5 z7 K  t7 c: n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& {- m( b/ n! U( j# z8 |% Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  M9 A5 m( z7 q% a$ B: D) Q2 s" Pset trade-record-current lput(timer) trade-record-current
( |/ D0 ~8 Z( {* k6 b- I! n;;
评价时间
6 g2 n6 a( c7 s0 Aask myself [
, q! b* y  g6 o8 Q. k# nupdate-local-reputation
6 x4 u% B! N- H% z3 F( Z: zset trade-record-current lput([local-reputation] of myself) trade-record-current
! x( j2 l# ^; T+ n% c$ T]
; {5 n3 j$ i2 @9 C) w) g9 ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 B$ _) a; n8 N5 k;;
将此次交易的记录加入到trade-record-one
; Y9 {+ u. l/ ?5 i/ v. tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ s% u% n: A4 P8 Y2 v
let note (item 2 trade-record-current )5 L& h2 @1 z6 |" S5 P8 R4 n
set trade-record-current
' W9 R' N+ R3 P, j1 M+ x6 J7 ?(replace-item 2 trade-record-current (item 3 trade-record-current))

5 d+ o7 I# _- j: c1 A1 Gset trade-record-current
/ o) Q3 K9 R1 J4 h9 I(replace-item 3 trade-record-current note)
1 q8 b9 y6 C: ?) p, X9 f0 E
5 _+ _! A5 V2 h/ L8 e% E
' g) n9 r1 W$ U. I' p8 v
ask customer [! N9 s7 e, ~: n: S
update-local-reputation
. @; P/ p0 B% l. `set trade-record-current% }6 H& ^& g" Z0 d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( r7 U. Y! }& r: C5 F3 Y
]4 o+ w6 X3 e* q# e9 E8 `8 V' K

6 u* ~1 Q6 G7 |9 E  {" t# s- l. K

/ n: \& }( Q/ x! b+ g. pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* E$ @) @7 C; K6 i8 @
" a  T; P. G% C# S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 F7 h( d3 A& q6 C) ]0 |' }& z
;;
将此次交易的记录加入到customertrade-record-all+ ~. I2 i+ n' ^, C
end; s+ }, Q5 q$ c: f+ V

& X% J: K; d( A2 R3 n- Fto update-local-reputation# t% Z7 M. D4 ?. C8 a( _8 A' s3 n& R
set [trade-record-one-len] of myself length [trade-record-one] of myself# y( k# r0 H4 r- R' S7 M) s" d
0 }7 ^% ?; C" @  M, K
) u; q9 B( p- l, J
;;if [trade-record-one-len] of myself > 3

, {0 ]: h: N- G* oupdate-neighbor-total
# _( {1 [. \; ^- l; J;;
更新邻居节点的数目,在此进行
. A' e) E2 b6 [& T9 c6 p  mlet i 3: j" B+ B9 o- E. S
let sum-time 08 O4 S2 r6 I  e  r  ?6 I
while[i < [trade-record-one-len] of myself]
4 q1 l- f5 }0 \4 F4 r, i[8 D# [8 X! e2 i. x- k: _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* r! \1 G$ B) U. s  |
set i
6 d- J% A8 A. D! t" A' O; x( i + 1)

2 _$ o: F" o) W]
' W% f9 _7 j: V5 A1 N( z8 d2 olet j 3$ z6 X8 {& ?' Y$ W# U3 w6 s
let sum-money 0
, ]2 R# E. K4 U4 }8 E3 z$ {" vwhile[j < [trade-record-one-len] of myself]
! \% t. p/ @$ Y3 d# o3 j[/ h) `( M# i3 a9 Z3 u
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 o( E8 C! T% k4 _
set j
/ p- X5 P6 {; w  Y1 Y* u0 C( j + 1)

; C% K/ W* P8 V8 n0 N4 v]
6 q: @5 P$ A: }% m3 I: d& v' ~) j7 Rlet k 3
( A6 O& W* B; c" \4 L$ Ulet power 0
& |, T6 d) U* @' u. e7 Klet local 0( @$ Y) U0 [0 {' h; Q5 T
while [k <[trade-record-one-len] of myself]
: d6 }" o) Q) L: s" i4 o- i[
6 A6 p+ q! i( \( u) fset 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 J1 o# ]6 k; J
set k (k + 1)
0 Y  _5 E% d- @! h]" O( F" q1 B( w* G# \
set [local-reputation] of myself (local)3 V' m( a0 N# |8 `! z$ T
end
9 x* b8 e% B& \% a. w" L& C  F
to update-neighbor-total5 o, R  q. F5 \" d, I
* `4 y, O: L- |" x' ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: ?( b5 X6 U6 C" W1 W
: B: C& a2 j1 N+ r# g* T8 W
& X  \# l8 \: v# Q2 Y6 h
end
2 w9 j4 B9 j1 c, H4 X$ K# _, y# g$ d+ g
to update-credibility-ijl & E; }  Y+ X1 N  `# K, ]+ I) E( E
5 U0 c$ ?8 C* V$ [% j
;;
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。6 R  A' p! J, z; I
let l 03 u4 [8 v$ V) x( v' R
while[ l < people ]
: b; ]! `1 Y9 w2 y;;
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- P0 s+ ^, l1 ]" W
[
) L/ R8 \" H7 @0 jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& j+ M4 g7 b( U0 I- Wif (trade-record-one-j-l-len > 3)
$ p7 l: u4 {" H) v[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-one3 H. Y) [: A  t: B) n. z2 ~# g
let i 3: z3 r0 R+ R; N( p
let sum-time 0
& J! i- C1 I3 cwhile[i < trade-record-one-len]$ Z% m3 H0 O4 l6 c! k
[! X2 W* w- }- n. [$ s# [
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! X8 }4 w% r! e3 J
set i. F. z% H8 h7 ?$ b2 G
( i + 1)

: e# |! c/ G4 h3 u7 x1 W: U! q]
# ]: P$ b0 j  U* S8 R# n& Qlet credibility-i-j-l 08 P, R8 f! |$ M$ S1 t0 J1 E
;;i
评价(jjl的评价): K8 O# G8 [- x& G6 s
let j 38 ]  @1 S0 G; P& A
let k 4
  R0 E& M$ U6 j; `& m: q7 Cwhile[j < trade-record-one-len], ?4 x1 z. M* ], \
[  _  }! x+ l1 K7 K4 D8 V
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8 N& j2 T9 p9 ^! V  ?7 y; n
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)
9 I' w, |; Q$ @" z1 Z: S5 ?# Dset j
" M7 J9 z* c5 H! `" v# h( j + 1)
, h6 e# m) g0 a% z0 |( x. X0 l
]
$ {/ q% D8 Z: T; Oset [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 ))5 e2 f- F+ M3 D! A0 n! j. R, k8 ]
1 ~7 W& Z. G! Z

% K" S7 \$ g# F$ R6 x5 Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 T' r, Z( i$ l% [0 h: b. C+ }6 {;;
及时更新il的评价质量的评价% a5 m% k( m( T" ^. |
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  z( s7 p! d# g3 Oset l (l + 1)
, H0 G. h) {) k8 |2 {]! M- H) H1 a, `6 ^) t
end
& ~. \* {& a* y, e0 u) b. C; R0 _% ?6 y
to update-credibility-list
% s$ _" o  Z9 B9 {! E0 V, {/ ylet i 0  t, C: m1 w/ d1 F
while[i < people]
0 }1 H% J) Z1 I- E! w/ ?[6 _! H5 ~- N( r
let j 0
. Z! v; }: S6 P3 O5 \let note 07 e4 M# x  r$ X" P3 L+ L, V, E9 a
let k 02 O9 l/ X0 s' y; M4 {; s
;;
计作出过评价的邻居节点的数目( X% \9 p5 u0 Z7 r" x
while[j < people]
& X5 ^( Y# }3 E6 Q& j  z* R[, \. d5 W' g1 I& f6 q; l
if (item j( [credibility] of turtle (i + 1)) != -1)
6 s& j+ k. B1 a;;
判断是否给本turtle的评价质量做出过评价的节点! ?, d, W( d: |, ^' @; O( N
[set note (note + item j ([credibility]of turtle (i + 1)))" {4 ]. e: i) U) o% K/ j* u9 |
;;*(exp (-(people - 2)))/(people - 2))]
3 x" A- j2 _. r: [
set k (k + 1)
+ R4 n& l9 U# u4 V]  H  I) f0 ^0 v/ d2 ^
set j (j + 1), e/ Y9 e2 W- w) S/ z( H
]
5 N0 w3 _$ T$ eset note (note *(exp (- (1 / k)))/ k)
4 P) T+ @0 G. X6 E5 w# }6 mset credibility-list (replace-item i credibility-list note)) T/ I) X9 R8 F, q: I) e
set i (i + 1)# W1 g( s! u) P
]9 n/ h; C8 i9 V6 s+ w& k
end- P+ G0 [6 t: Y. n) ^
+ c, ]( i7 a! M9 C9 e2 V$ D
to update-global-reputation-list
" ~/ P7 \& e+ r/ Q/ Klet j 0
: j" y: l  z+ Qwhile[j < people]
% G0 n5 `7 z8 `- e8 X[. S% R1 C5 u4 G
let new 0: x% l2 R+ {9 |" z7 f
;;
暂存新的一个全局声誉
$ g: o3 t2 `% u/ y- Ilet i 02 r4 h0 I5 T+ @5 l; P" ^2 K
let sum-money 04 Y& c* k$ k0 H, j3 Z
let credibility-money 0  v% K7 |6 Y& Q  P+ U
while [i < people]* Y: a% E9 Q* a- F# x8 y
[
. D. c: l9 }. Gset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 e+ @4 _2 n) y5 A' U2 Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
2 {/ z0 D8 N2 A9 \/ \  C8 `set i (i + 1)
1 y# T/ {: m& t4 X( J# S( I]$ m) t  o, ~: [7 H
let k 0
2 e5 E) C) B' w- S% plet new1 0( y8 f  i& h" w7 }- f2 E
while [k < people]
8 q; x7 h) P" f0 V[
3 g& C/ M: r& {' iset 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)
0 K$ f  }# E: U: T& Y9 Kset k (k + 1)
: w' e* B$ q2 q0 @]
! ~( Z' X; ~/ b$ L/ Yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! ?/ j8 X0 f: M* `/ O) v) N1 A
set global-reputation-list (replace-item j global-reputation-list new)8 R& J6 Q6 v% M! p
set j (j + 1)* j2 U& o' p5 _$ N8 G/ t* n5 q. B
]  b  E( r: B6 {
end5 i7 Z# E8 U1 F" W" o0 w; `
& A+ J  g4 O/ |) {
2 M' V: |4 E% U, c) J- M+ R: C/ @

$ B( q! s1 Z; S: c6 I4 ^7 J) T- K1 f- Pto get-color
5 _' d# P1 m3 Y  {+ y) W/ W4 A  \' y& y. w
set color blue
( }2 k- r; i7 \5 }/ p0 T
end
; _0 k1 C( q# ^( _: w3 g% ~8 C8 |6 W( ^, I' U
to poll-class
5 D& M7 D2 }$ S9 A+ Tend
# w* f0 P8 o5 `8 ]% ]
( m# h) d1 L  J) U  A. u( `to setup-plot1
1 j7 J0 J. w! ~4 o& e& ~% Q+ z4 o) O; e; a1 z7 ^
set-current-plot "Trends-of-Local-reputation"

: [- E5 H. M- r
7 l8 Q1 J% I* H7 |set-plot-x-range 0 xmax
2 a' a( G+ Z' a: J' K5 O
4 J0 c/ r' m( o/ R# }
set-plot-y-range 0.0 ymax
  l- H0 Q( O& z" y% M# J
end  i4 ?* K- I2 p* c

  E$ k+ I$ c9 `1 P4 y5 D- Q. _to setup-plot2( m, m) }  b! v% \5 ^9 m
3 W; `; H( x) y# S! h
set-current-plot "Trends-of-global-reputation"

; ^  t6 C9 b0 a% n8 D9 I  b1 D, S; J6 ?! i* k' a2 Z* w; ^, g
set-plot-x-range 0 xmax

+ ?5 a, k; Z) u' z. O/ d# Z, S0 |, l8 U- p* M9 s/ D/ J
set-plot-y-range 0.0 ymax

; n0 A3 J' q- k7 H% H! eend6 b* E" ?7 b+ k/ M4 y: w$ n
& t/ h; g$ g  I0 P  o! _  b
to setup-plot30 ^  n; M1 F1 D9 y# i+ S/ x" G
9 ]( r/ V; G# ^5 k4 u: |
set-current-plot "Trends-of-credibility"

' f: U! B. Z' C+ d0 b0 {
2 R& X  E5 N; m+ g  d* T, _set-plot-x-range 0 xmax
4 |3 A+ A; Q7 I: c% b& S

2 k, V, p% Z) `set-plot-y-range 0.0 ymax
. B1 {7 m0 L3 P. L# X  @% T
end3 \- u  B( F7 B( Y0 B4 r% c( s

' v8 T! G1 Y9 O; |9 P  zto do-plots
# c- v- h8 p/ j1 Y6 r  \, Rset-current-plot "Trends-of-Local-reputation"  \4 S; s% j9 ?
set-current-plot-pen "Honest service"1 ^0 ]1 ]- U8 S% r! G
end
* m7 V: A7 O( d- r1 c3 Z
" f4 X  }) s' `; A[ 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.- E  S6 v9 {+ Y5 q' \( y" Z

4 q4 d, [) ]2 F0 W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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