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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:
$ `9 |- m0 j, m! Rto do-business
( p* N" x# N" K* x. N rt random 360
4 V- b: n: R: x. |$ d$ u fd 1
+ O3 l. D3 m1 L) Q6 [# A2 R ifelse(other turtles-here != nobody)[
/ Y6 V( ^# z2 C) W2 C- {   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.0 {& T1 c" x$ O' p# r0 K6 D
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 S# A1 z7 J7 C9 F' ^9 u8 h9 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# @0 ^2 H; D- i, I) |+ |1 F   set [trade-record-one-len] of self length [trade-record-one] of self9 F6 ?7 s& x, X: r5 b
   set trade-record-current( list (timer) (random money-upper-limit))$ p" m0 n6 n2 x, P0 E
% A) I: E4 d& O- X
问题的提示如下:
! \3 y  ]/ n  M
1 ~5 k# c1 F8 X5 p0 @7 I! \! f9 _# }error while turtle 50 running OF in procedure DO-BUSINESS" K& R! m' l' I" y; o
  called by procedure GO6 L$ s* M, n4 H0 F/ d  G
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 [2 |0 \0 Q$ ~* R6 K7 A
(halted running of go)- T/ M2 P1 p- t2 q0 `6 g

" h3 M! h9 G5 Z- }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, y0 C, X) B- H
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
- E  }0 `. |( u% `. @globals[
8 d/ z% A8 g* Q' B$ ?3 Gxmax
7 s, i6 p+ f: R1 z2 Iymax4 b0 j" j4 `2 u0 t7 [$ S, s! C" u2 _
global-reputation-list( N& @& J7 l+ K; P

3 M' l! T0 w! g! D& {& ?;;
每一个turtle的全局声誉都存在此LIST
) d* C1 Y3 g3 W, k( d6 n5 Pcredibility-list
% I% g+ ^) Z( r+ S" p* s;;
每一个turtle的评价可信度
* \  O" M6 o+ @, c( F5 n$ Yhonest-service8 ~2 _# _/ H) C  l! x  g9 B' R
unhonest-service
0 \3 [0 W8 {& D" U) n! l7 {oscillation
8 P# S+ l3 f/ p' l0 L) q8 |2 Xrand-dynamic
, I% G, @1 q: h0 k* v" I]( m6 v5 q  ?$ M0 a& q6 [4 c8 F

+ m9 n3 ^4 ?; ^% \4 tturtles-own[
; A+ ~/ ]  X, s- r8 p# xtrade-record-all
# A& a0 Q6 h' d; w$ D$ l;;a list of lists,
trade-record-one组成9 |, ]0 o6 C' U1 A- n4 M
trade-record-one8 L; F' {" z( d
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ Y* b$ h0 y# ?5 x6 ~  @' I; 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]]  v. ?* [$ u3 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]
0 M; B% N1 q7 ?# vcredibility-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, f; ~, s$ A* P& m( v. D1 K
neighbor-total
. k2 |$ B/ h3 W. }: Z2 N, O;;
记录该turtle的邻居节点的数目- w, h$ |( g' n. d; t, |
trade-time1 ]) W3 |5 i! x: @: a
;;
当前发生交易的turtle的交易时间, x- e8 x% Y3 a% u0 X2 d
appraise-give
, h9 h% o4 d# `;;
当前发生交易时给出的评价
4 F8 A# ~) Y* P. ~) |. s! dappraise-receive) k. x( Y+ ]! B: G' R
;;
当前发生交易时收到的评价
) @( ^  Y; [1 Z& _appraise-time
& K1 W+ o1 M" w;;
当前发生交易时的评价时间; z& {7 m7 d- f, }; M2 l% y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
% m$ Q- P  N  x) B/ Y9 o0 g  Gtrade-times-total
5 [- F( ?; G$ v( D/ n;;
与当前turtle的交易总次数/ l7 v1 o+ q& E. f5 w
trade-money-total! h; ^6 f$ g& r7 k8 v& s8 _
;;
与当前turtle的交易总金额
" m( o- A' b, r% \  N0 j: ^local-reputation
1 c7 a/ S0 f0 ?. r: Vglobal-reputation
) A4 b- a# h+ h% O7 Ccredibility
/ _5 `3 g# D; X: s8 z- `  q3 u0 B;;
评价可信度,每次交易后都需要更新
5 y/ m' @) A; o# Gcredibility-all
4 B( }7 d8 g9 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$ Z- a5 I: [1 b3 ^5 z

! B2 ^- \( I: v$ c0 c2 j; Z;;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
2 h4 Q3 t+ D  D, Dcredibility-one  f7 d- ?% O1 {3 G! b* f/ P: F
;;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
7 w0 p- Q0 O0 u1 y0 f% |# ], C# _# `global-proportion5 V2 _7 n" z  N* f; x
customer
/ m, a9 N' \; a% ccustomer-no, u! `' ]0 }6 D, l, d2 e" T1 ]
trust-ok
. c1 G+ c$ ^. |$ {trade-record-one-len;;trade-record-one的长度7 [+ T1 K  Z( |" q; Q7 U1 [5 q
]
- {! Z" f2 ?# q8 O, R: I1 l5 V: ~% V# U) V$ l0 n: J+ Z2 r
;;setup procedure
% t9 t9 e) o# h2 k
, D4 O( v. _/ t6 N, `* V5 Bto setup
1 E3 [8 O! a( F1 n5 V$ u9 c; Y1 C7 @) f/ H; J+ ^1 ~2 H
ca
5 m- v5 t. m! B& V" |8 s+ T

$ E) }3 X, h7 n1 p. f# }initialize-settings

+ C  k( ?. p! a! ?2 i- o
" n0 i! H. {* x* j1 j8 ~* ~+ p* Ccrt people [setup-turtles]
9 m0 W( P- W5 a$ O$ T2 r
- L1 e. Z. p3 L( K+ b
reset-timer
3 D; C. O$ r) @% H! ?' Q# j( U
3 V* i4 [0 p( i, p' B/ }5 I
poll-class
& v8 Z( g7 w  K$ e' f, ]- J
& F5 Y; k; m8 i* x$ D
setup-plots
, O2 O# G5 ~$ T/ Z! f4 o, p5 r  i" x. Q
7 V+ u' |3 P2 P" k
do-plots
/ I6 |# Z+ s. a1 S& D4 {
end) ^' g+ b) f$ r8 A% d) t# `! }

% f* r$ b% q7 }to initialize-settings
: ~1 E; ]3 a4 n. s
( j  t* v8 [( j, l3 q) Wset global-reputation-list []
4 t) w; B( f  w

& p. n2 n1 R* t- h; F( oset credibility-list n-values people [0.5]
5 a7 Z; `. p+ ^5 J% F- `7 A. ?

4 U& W3 B+ @1 z0 H7 ~* H3 Yset honest-service 0
  H* Y0 S/ p7 L' D0 L, p' n
0 O: B0 }' x! G" e9 j0 u3 a
set unhonest-service 0
3 G' x# V; }" w
6 ]$ ~1 e, F% P. t
set oscillation 0

+ C6 m3 _& u: D& T4 p
/ p/ t8 }, K# R; j, G- [: }" j; [* Uset rand-dynamic 0
' c/ m* n  p3 F' a3 q, z1 |5 ^
end: C" R4 W* O# F' f  S' r& L8 ]% f
5 t6 u) t$ A7 }$ c- Q
to setup-turtles
6 H# \! C% T5 A% c7 m6 L$ M( Jset shape "person"
0 b; |: Z4 l+ V# Hsetxy random-xcor random-ycor) R# Z3 o& K/ t& T2 z1 y2 H8 g
set trade-record-one []
( ~+ Y2 Q6 Y. G# Q4 R

& Q+ q! M/ `* \" ?' Z4 @/ ]4 m: v, Pset trade-record-all n-values people [(list (? + 1) 0 0)] : }" h: u: w- d6 E: J! @6 W. M+ @4 w
8 ^, J/ z1 b! |" x3 _
set trade-record-current []- P) ~) h" q# B. M% D6 @
set credibility-receive []
% b/ C! T$ I. S$ \3 J0 q9 rset local-reputation 0.50 V1 K1 d0 o9 b0 `
set neighbor-total 0
6 Q6 e8 y9 O: C& aset trade-times-total 0
! N, g3 _1 j2 O  G7 |" r! J% y% w, yset trade-money-total 0
7 P1 G/ M' t4 \) h& Pset customer nobody. h- Y+ I* W7 O# D
set credibility-all n-values people [creat-credibility]& H" v& w" C/ F$ G. Y6 h5 T( q
set credibility n-values people [-1]
3 i  Q$ R! {0 C6 _get-color
  x5 \' [, |5 {' q
- Y9 ]5 r" c! [6 J% o  o, g7 H
end. d  ^  {. b3 [' l. h  J3 I! ^7 L
6 a! B: _, Y5 N9 Y
to-report creat-credibility# r: ]6 e& {( h8 i8 ]
report n-values people [0.5]
1 L* n& G6 E/ G& s6 T" ]end
! i4 Q( {& l0 P% X
5 e4 S& S% `9 S) _# |to setup-plots
0 x* |" F+ q0 r: \  c. s) o# F8 S
3 p; Z( C! U; t# Vset xmax 30
5 y2 s2 u+ x; ~% d6 N' S
1 l; n. j# S& ~4 f, Z
set ymax 1.0
3 r- p! {( ~7 ^1 Z) [) P. h

' |' c1 v: I. V/ T8 P/ H. Vclear-all-plots
' V6 d* o+ W. U5 _1 l
* q. H" O7 _# e2 p( ]3 O1 f
setup-plot1
+ |) l* g# O) w/ X/ u! L
, T; n& S$ H3 Z" j2 @
setup-plot2

& E9 J& U9 p4 O0 }9 x
! |) Z' B: u# w) F$ c1 Vsetup-plot3
' V8 M7 b$ R4 k0 d- i# H' k
end
0 X3 X1 T% j4 r/ P/ M; n& F5 h7 I6 o
;;run time procedures
$ c, r- w2 y9 {2 w4 @6 }1 q5 G( ~) Z$ p, Y
to go
: s+ e+ N1 |7 c7 B5 M( A
1 R' [5 c  A, _4 M/ C" B* \# kask turtles [do-business]
$ K# }6 Y+ m( A  T8 ^3 x' q
end/ l# C* S5 j0 ^
/ T" n" c( f# t+ d
to do-business
8 N# E6 e7 o7 h; X; |; h
6 V' R1 N  l5 ?4 Q# _9 Z
% P: m5 Y2 o( @7 a& U) Y
rt random 360

2 s' r8 y+ O2 x) Y  A5 g7 ^* {& t. e0 _/ F, L
fd 1

2 T) b' w, Y0 |+ S3 W
: C' z# g% p% U/ x: P3 Lifelse(other turtles-here != nobody)[
& V4 L$ u$ S- a; @; Z) Y( q9 [7 @0 D

! D9 q' h. Z$ D: |$ t, xset customer one-of other turtles-here
9 [! ^4 Q( z9 d* ?: x

- h6 [8 f; X$ q;; set [customer] of customer myself
" F" w+ W& Y; z2 g# Y& [
- B: ]4 q2 [; @( {9 w: Q- ?
set [trade-record-one] of self item (([who] of customer) - 1); ^; C. u( \5 h" `
[trade-record-all]of self6 s8 j1 v5 p2 O4 i/ O# U0 O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  q4 B" ]4 V% R- [( j* T; [

* J" Z0 b, G6 T6 ^' j: w; Iset [trade-record-one] of customer item (([who] of self) - 1)- d! s3 k) f3 D2 j& x
[trade-record-all]of customer
: p; w* ?: S$ U3 M/ H1 d
) @# k( f0 x* m3 h
set [trade-record-one-len] of self length [trade-record-one] of self
: {3 E2 r* ?+ [' F1 m% `4 q
- i& o) X. C6 S4 o
set trade-record-current( list (timer) (random money-upper-limit))

) g2 ?6 s  w$ v  X3 I) R$ `/ X- q' C/ X1 k# K3 w$ h
ask self [do-trust]0 D/ P( Z' m2 x' o
;;
先求ij的信任度
9 f5 c0 \. b; t  Q1 f$ p8 p+ B9 {$ P& E$ K  F" ]+ l
if ([trust-ok] of self)
8 j$ d' W0 u& R;;
根据ij的信任度来决定是否与j进行交易[
" l* r: a; x$ K+ mask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  ^+ E; j. y0 j6 I
. W' n7 d. O; P0 m( F[

/ J& I# s* S& ?0 D2 r
7 {5 P! f3 {% ~$ B6 Hdo-trade
1 Z* f5 I* D$ s4 [9 S* G

+ ^/ H3 {4 X2 h7 ^3 e  eupdate-credibility-ijl
2 z3 `2 y+ J7 H$ r
3 F  g' ^. L# S
update-credibility-list
2 r! W4 u  W- Z/ n# r8 _
; ?( Y) ~9 d1 _6 C

( j& F5 x$ G9 H& T9 {update-global-reputation-list

! f2 h1 H$ I, l7 Z# o& O7 U$ m/ r- A* ?4 ]$ T1 y& S; Z- V" ]5 Z4 Z2 b
poll-class

# z. w, s+ U# D) o$ g- J/ ^$ Y
; `% T( E3 C  lget-color

( ?% n6 V: ^. [0 h
; e. j4 l  e! ?* z  o]]" m( t: n1 D) m9 W% `9 q$ j4 {" r

! k- O' V$ o. o8 p9 n6 x% l;;
如果所得的信任度满足条件,则进行交易
* I! x3 G; y! C/ B" i! X5 R: K9 ]/ e. E# ^! y
[
6 r8 R9 ~( L( Z) g9 `  V0 z' u1 B

- }# {# v3 c( N* H8 m7 q8 e7 \rt random 360
( m4 f+ d) Q: ?4 t* w6 C* z

- z( p! }) L* K) }/ C5 afd 1

4 c; Z! b  ^6 n* _: j
% h1 B  ^: n$ B$ _]

1 L. q1 P' Y/ V6 x' |
$ B8 o+ K7 L# C! Q( O! Cend
( T  @) ?# [8 V/ g1 ?6 ]" x
; w" `; E' Z1 c5 t  \
to do-trust
6 W5 S+ u' O$ tset trust-ok False
: p& C! O, A, Q7 d0 M2 n
) s1 k' ^6 O$ o) A" J+ K6 O" C* W

0 o4 W, c# k8 w' |7 tlet max-trade-times 0+ D" l* U2 h7 C; M; A* S; F& E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
8 i, a* E2 ~& {* x1 g% H+ B5 Klet max-trade-money 0
- R( G! k* ~; N. |/ Vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 a: J& n' ^1 s  o4 t4 nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. K; ]1 t2 a# M* V7 f
# ^2 ^8 d' d; y: ?! _

  h7 u" T! x2 ~# u' |; t4 Z; Z$ eget-global-proportion
1 I. E9 _1 e- G3 blet trust-value1 Y2 H4 e* u7 I$ q" J
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)
# b6 Z- o. ^0 Q  c
if(trust-value > trade-trust-value)! o' `4 X9 y* \! o
[set trust-ok true]
7 s. w/ a, S2 E& Oend
+ b$ r$ Y3 r/ S
/ t$ p, @* B' T- Zto get-global-proportion( n1 l; l9 U5 \& c" c' }1 W9 U& t
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" n+ s+ H4 F: T- O( o  v[set global-proportion 0]
0 L1 _. }7 A) P% z6 j2 v3 u[let i 0) c3 w; y+ l- Q* ]8 s2 W2 C
let sum-money 0
6 ^' d# e: ~* q  u% f2 r; ^while[ i < people]
$ G0 D- u0 ?, R! Z  b[- i# ~" l& A; A# H0 G" h
if( length (item i
" L) F" i4 d$ C, {4 A0 w$ X: f" E5 h$ Q[trade-record-all] of customer) > 3 )

* d9 A' [/ H$ O7 R% ]2 {* I[2 L7 u+ g& M# M4 b, f- C! J6 M3 h' Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) T) W. A2 [: a% k) s]
; z' [* C, d: d7 X]) L" y; s3 |9 N! ]2 o2 m# Q0 l
let j 0% P1 A/ ]* @) h7 E& `& M
let note 08 w2 Z1 c4 h7 U% |# V/ c
while[ j < people]
4 m5 Z! ^0 g) B' ^0 `[1 e" U" j# o- |( y
if( length (item i; A* @: B% I& s& R7 F6 ^: f6 m
[trade-record-all] of customer) > 3 )

4 w* H7 \# f* \0 @/ h! H[3 h1 e& S2 e+ G; h, @3 ^
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 \2 k' r  Y2 M* u, R/ W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( L8 u, C, K. G  L1 r) n
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 p) g& |! l. h  `& S' I, ^]
. s/ M7 t9 c" m, q  x( H$ J]2 L& U/ }( o0 r( W: d( A$ s
set global-proportion note6 z5 Y. U9 E6 q# X
]
- x) N1 }2 O# C) s& {8 xend+ j+ G+ ^) W2 ^
3 r' ?8 x/ a. ^: l% V' T5 r
to do-trade
: A3 P1 @8 A/ ]. a8 O4 d;;
这个过程实际上是给双方作出评价的过程- Y9 s7 F( c5 p1 d3 R1 H' N: k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) I& Z; o1 C5 p* y* qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 t3 ?! L* K" a+ T2 ?0 Q# }
set trade-record-current lput(timer) trade-record-current0 F: Y3 N" B8 d' B
;;
评价时间, A9 ?0 n: y2 H6 z, @
ask myself [7 q$ P" d, m) Y/ {, |: g
update-local-reputation8 v6 i% i$ |) |% J" }+ y+ Q
set trade-record-current lput([local-reputation] of myself) trade-record-current% }5 W1 s. E7 F" ^. Z
]  O- I' W; f) R! \
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 Y0 M' M+ h4 J7 _# W1 ]0 Z;;
将此次交易的记录加入到trade-record-one
9 v* b/ r" J$ w8 @2 F( Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- H; j8 w0 r+ U" w% I8 |/ _
let note (item 2 trade-record-current )
  P% S8 X. y1 ^& yset trade-record-current3 l8 {' x7 K/ m, E/ C
(replace-item 2 trade-record-current (item 3 trade-record-current))

* I7 ?# |8 H- [& M: W7 Vset trade-record-current
5 r( a  x1 n% I' t(replace-item 3 trade-record-current note)
: p0 l" H5 S9 A2 g2 O5 t2 V. D) i# p$ C. z% S: U

. A1 K4 k- m$ J6 Iask customer [
7 b" r4 i6 u% u/ }1 K1 j1 pupdate-local-reputation2 K6 i- Y# e+ r8 W
set trade-record-current; ]" r9 a+ b. v0 D, i
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ a, t) e2 k* X- y
]9 V/ u! v, K/ G+ N
4 c4 ^) {9 p8 j" }( {
$ m# X$ y& F+ C" Z7 K9 L
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 x/ \3 p2 K' u/ ?) u8 r

( R9 d% I  y) C! f( N) U8 k' H- B! wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* L/ L2 ~6 K! i. o7 D;;
将此次交易的记录加入到customertrade-record-all, G( p& ]" \  N4 q$ ~( t; N' u
end
& u, j/ m! P7 d- z, [7 c" o# y) x; ]  r9 H2 `* ?2 S/ H" H4 Z* K9 g0 d
to update-local-reputation
+ p0 x8 b, y' Nset [trade-record-one-len] of myself length [trade-record-one] of myself7 q: H2 x0 ]; l# ^" Y+ u; ]

/ p; Z. D$ _# A. k5 P1 c6 }: E) l1 u! o" h& q9 \
;;if [trade-record-one-len] of myself > 3
5 }+ L% M% j( c# F* Y. L) O
update-neighbor-total9 U" h; S. Z# I. \+ [6 R$ K
;;
更新邻居节点的数目,在此进行, q& |+ j  O7 D* u  M* M: j3 s6 S3 W! V
let i 36 N! i; Y4 I  s- F
let sum-time 0
9 h- g7 X7 X* k4 Z6 y* x- t7 Wwhile[i < [trade-record-one-len] of myself]
, S" N& Q+ I3 }$ `1 n[' k7 C2 X2 w: Y% r
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" K1 @, T3 P! {6 |* T8 ~' w# ]9 p
set i( y/ W' _+ ?4 K) f) r1 Q( b, l
( i + 1)
' x" J, B5 e( Q' ^( I! N
]
3 U& k, ~1 J% u& ~let j 3; ~/ [# z& R. ]
let sum-money 02 Z4 l& O. l! P, C/ t
while[j < [trade-record-one-len] of myself]
8 D) n5 \4 H. a7 Y) _6 Q1 _[
" H0 n# K" z/ @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)- E% C6 ~0 d5 x" {8 d
set j
1 J# s( z& `- h8 Q5 p; u( j + 1)
! B" `1 u, I+ i8 N& a
]
4 @  J5 l4 O0 u3 b0 U" Olet k 3
6 X' j, l' h3 ~  hlet power 0
- ^  R7 r5 {' u1 K# K# l4 \3 e5 ?let local 0) t1 B5 i4 N$ y7 N3 ~  P
while [k <[trade-record-one-len] of myself]
6 E+ [. E8 _, Y[3 ^1 L# T0 p0 L5 I* e
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
( |0 F. q% T& Mset k (k + 1)
* @, t: E& }, s) U# c9 E]
0 \/ o: {% d/ t. j* P; N+ x2 Fset [local-reputation] of myself (local)
8 a8 J6 q2 s9 O7 N4 dend+ h) v$ e6 P# p
5 `% ?. G  r  a' r9 S& o
to update-neighbor-total" E7 `3 W# g, E) v4 S7 h% T

8 K, }5 h# M2 Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 Q" w  h/ Q3 S4 H. W
' y; H% K3 G8 G1 l4 F

: t  b8 K1 J1 @/ `( S3 g6 c5 W) eend
5 j6 c" U  I, F# H7 S! E6 }8 b( B+ j9 V# }/ a) ?3 N8 U/ `, Z
to update-credibility-ijl * _  G+ r/ F) n3 e% P9 J

2 I9 \) Q& m* z& k;;
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。
0 a5 Y0 i- R* W% I; |let l 0
. K. {) g  c; ?3 q/ A3 p( twhile[ l < people ]
* K9 v/ I' B. J0 `$ k# K/ K7 g& 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
& h: @! b2 l% \0 ~[
7 h, d' d7 ?; Y" f4 a% \4 blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 S, G' V+ r+ s, u; J1 t, }" G+ `if (trade-record-one-j-l-len > 3)
+ b0 {, @5 u! u" s( C[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
/ {, O8 n0 k- R) X2 I+ z' J% jlet i 3
6 Y- {1 G" n9 t* W) T3 olet sum-time 02 u4 [3 b6 l5 h( v4 u. q* p1 H& ]
while[i < trade-record-one-len]
5 \2 [- t& h7 ^5 I4 M" Q[% Y4 N4 W/ v  R* x) @: u
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 q: `/ V; t1 [9 Y* Y
set i5 `; y( f- j$ y  _0 L3 T
( i + 1)

  E6 \' }6 R: X$ J0 ]* T]! ~6 E3 V* b( g1 o% {5 p' m5 `' X
let credibility-i-j-l 0
/ h1 U8 m; R; G: V& z;;i
评价(jjl的评价)
$ ?) i' [6 t' g! V' y$ Y% Ylet j 3( V; @2 W- F, W; T+ }
let k 4) T3 M! g6 j5 {8 f$ `8 B) L# c& H( e6 u
while[j < trade-record-one-len]
$ J' y3 A; M, R+ @& z. j' @[" b" `! O, j) x5 z0 p- v  F" [* U- _
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* B- M: n6 J5 |
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)% E, B5 z9 i4 D; @3 T; Z
set j
; [4 X2 h8 N5 Z$ G+ M) ^( j + 1)
; \- F# F( g2 }# d* V' {2 {7 }
]
2 n9 ], n' O% B! 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 ))) J( D8 q/ r& n
+ P( \) Z* V2 J* x+ f2 E& U

. ~, q2 M' s. F% Vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; m; l8 B# Y; u2 T3 N;;
及时更新il的评价质量的评价
! y, V9 n; d* Q2 |$ C" Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 n! u" W/ z$ ]2 ]3 a/ o9 jset l (l + 1): L0 s1 Q% v: z2 p8 W# U
]2 l& e" r2 x5 R6 ?/ e, ^! \1 @  [
end
" m" `. `8 A# v! X" W0 ?; k) G/ J' i. l" B7 o; |' F. g' b
to update-credibility-list" |: w1 S7 _5 J1 u+ q
let i 0
/ ^2 J6 O: e7 _, ~3 ~while[i < people]4 l5 T' L* {/ V  N1 f
[
% r4 x& h9 {: D6 T. t( l+ Glet j 0! Z+ b7 u! U% L: R, c/ B6 P( S
let note 05 i( ?5 P5 c+ k! ^+ j0 M
let k 0
& }# i: B" b% C4 R;;
计作出过评价的邻居节点的数目
, l( V; E6 e/ Y5 |. q/ mwhile[j < people]3 M4 |4 F1 E% d; w  U  p
[
' `; N' O9 b$ G2 i7 C# iif (item j( [credibility] of turtle (i + 1)) != -1)+ {9 K+ Y4 z. o" @8 f9 n/ G
;;
判断是否给本turtle的评价质量做出过评价的节点% \4 t8 h( i: l* S% R4 W
[set note (note + item j ([credibility]of turtle (i + 1)))
, e# C  x& Y3 ?2 P* v;;*(exp (-(people - 2)))/(people - 2))]
% ?3 t# a' J) b, p( T- K
set k (k + 1)
7 u- [2 V6 G' N, I], T$ x- _  N! M
set j (j + 1)
8 {; \2 r1 B6 {" M/ j* L]
( U0 ?9 m1 {$ Q4 {" bset note (note *(exp (- (1 / k)))/ k)5 C/ Z0 Q$ X  h2 Q, A
set credibility-list (replace-item i credibility-list note)3 b( x% h) G4 @8 n) M, H* |& S7 o$ @
set i (i + 1)! |' |, X; O9 S& T4 n, U' e) M. K
]
& v+ l4 m* S. u: y, kend% _4 G5 c$ a1 S- H7 ^. P& N+ b

4 o) N7 j! U+ G  J8 ~to update-global-reputation-list6 m5 F) `+ R+ Q" g8 u) W
let j 0! w$ R( e+ ~0 e* ^' U
while[j < people]
. u; F) f4 s' D1 E+ v; n8 `0 r[0 `* `' v1 F/ U, n$ {2 z
let new 0
  ^' _# L8 @5 F6 l. S;;
暂存新的一个全局声誉3 n5 R& J, D$ L
let i 0, T, _8 ^) ?. Z  k
let sum-money 0
4 [3 I# w8 v8 K* `let credibility-money 0/ W/ U: D" [# {! n
while [i < people]" Y3 Q) U0 p- W
[
  Q$ O% C! v* U$ Mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( E8 E- L6 F# O5 g8 Y; W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) Q- F4 c: t* {$ m( P. t
set i (i + 1)& U# Q' L3 d+ \; ?( X
]: u; [5 p  _( g  M2 w3 `9 k+ o; o- h+ I
let k 0, d$ X8 e0 g; ?
let new1 0) }. z) g+ H! X4 P7 e0 n1 f1 [
while [k < people]% R1 Q# m8 a) Y. t% Q. m6 `
[. c- Z4 A) Z& t% ~$ C
set 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); x- t( T* }' F6 {- T, C
set k (k + 1)" c$ F" p% c4 r2 N) a9 F
]
, V  ~# R! {8 F* A; r4 b) _. _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + \0 }+ f6 z) e
set global-reputation-list (replace-item j global-reputation-list new)
% X' b* \! J5 ?set j (j + 1)
* @1 X  K5 W0 \9 m' v% {  k]& H' H+ ~: h) ]! ^* D5 I/ x7 F
end* j5 y0 [8 B) e/ B
. x  I4 l! P1 ~+ S# U* D
0 n5 F$ C. H6 [# H! ]) T4 Y" ?

  [* D8 a# _; T( _  sto get-color
. I1 u4 m" V: T8 v. e1 n# {) M
% i( @1 F! p$ v- M: J  @6 x& K7 iset color blue
& Q. ~! ?/ z5 P8 J
end
$ k2 f# @: h1 V$ O8 v$ x% `9 g
- K( I& j6 h0 H9 Y! Rto poll-class
5 `; Q3 [# p, B/ Z; Y! hend
. p) D' F4 c) V. Z) J8 Z8 b# ?" }% L7 d$ B0 X* A
to setup-plot1
: n9 T) p: J0 ^' T0 s
: d1 ?9 M  `; e3 Jset-current-plot "Trends-of-Local-reputation"

/ O* @% ~9 l. m% {# k6 E
5 f7 `: t* P& V7 e% k9 v8 A1 {( eset-plot-x-range 0 xmax
4 T3 U1 f, v+ V, J! X
. J4 \. }1 n! r) G
set-plot-y-range 0.0 ymax
6 ?* v& i# f! T. Z8 L
end/ K3 e1 d: X% v% a4 @. m* G+ K
. m* h( f4 _/ {" y% u% Y; u0 y
to setup-plot2
( Y7 L7 [1 V& r$ b. E' n2 y9 a, i! R8 A# w# h8 I
set-current-plot "Trends-of-global-reputation"

0 ?  l! x) U* S4 c5 R) c: Q6 O# M6 e" j3 c$ s
set-plot-x-range 0 xmax

0 l! y' H% p0 C" _& y  w4 S4 s4 d* r" x5 o7 `
set-plot-y-range 0.0 ymax
! `2 G) X: \; z$ m1 ?1 _6 [) J
end
) F' Q9 G8 t$ \2 ?2 g8 I9 K, G2 ^/ Y6 \+ h) F4 M' A
to setup-plot3
- R# v$ j7 I& _) D+ R4 h' N& u3 p
6 O) ?+ X7 ^+ `: p8 \1 a- Gset-current-plot "Trends-of-credibility"

; G$ }- N; j% S' J  A* p" `1 R. \3 p5 p8 Z# E+ m. O
set-plot-x-range 0 xmax
0 ?* a6 Y- E- s. e" a/ E. V

; j- @( j- r% K- F* m* T- Vset-plot-y-range 0.0 ymax

5 H0 u! W1 S& nend
* N% a0 J! L( E" a+ j$ k1 z/ D: {+ g3 b4 A# r9 k$ t$ h
to do-plots
! a" `$ b- s1 b* s, pset-current-plot "Trends-of-Local-reputation"
/ d8 D: ?6 p+ r2 U! @, I8 ]set-current-plot-pen "Honest service"
* {. W. M9 Z3 H; [# Iend
0 w0 d1 J" n* Q  S
" D* j& ]0 o# J# r' {/ N[ 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.
! h! s8 R: t" I- X& d( @8 U- `
( C. j0 ]' S; R5 b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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