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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:
! d8 Y1 o2 P0 \0 D6 gto do-business
# v  |/ c# [! ?2 z& J2 [" f1 p rt random 360
+ T- {2 e; M3 }$ b7 U9 I  b9 h$ M fd 1
2 l9 j8 O3 U, q+ S ifelse(other turtles-here != nobody)[
5 ?9 K8 N+ m/ T1 d! q+ Q   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.
/ m8 U+ a7 E% U; A! \& d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  U+ r$ ~: v; j" y/ v, j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
4 N" |/ p  d3 _& K& l) T6 u2 H: ]   set [trade-record-one-len] of self length [trade-record-one] of self
0 a3 Z* a0 f, k   set trade-record-current( list (timer) (random money-upper-limit))
9 [1 e+ \' _; v3 W
: b3 ~$ y! V8 G! b问题的提示如下:
# I3 ?0 J" l9 C4 N% i, a6 e: M
# h2 w4 Q0 W/ H9 F" x! kerror while turtle 50 running OF in procedure DO-BUSINESS
% @' {( l, _' ]6 T$ @1 n  called by procedure GO, ]7 c# y. o+ g! `& u) _$ h$ Q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) C" y' P6 ]1 h$ \
(halted running of go)7 K( }: w: p6 T- |( h8 B

: X/ ~! i  F# W2 \+ h/ |$ T# `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 J1 n+ @$ q- }8 h% b- O4 g5 N
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 V$ |8 o3 O, c5 ^8 p, h+ S6 K4 I
globals[
; M5 V/ v# l" Y( y# u5 ?1 uxmax
, B8 P( p9 S5 g' P3 gymax" x8 i2 F6 Z4 o& Y% F1 `9 u0 {
global-reputation-list
& _* E; k: v# X& z* N$ \) s! Y# T* K& X$ j: U' O8 T
;;
每一个turtle的全局声誉都存在此LIST" M0 B! l7 O$ e% F
credibility-list+ j! [) w4 i* i. ]: a
;;
每一个turtle的评价可信度$ C4 s7 e9 S7 l, `5 W
honest-service! G& g8 T" ~5 w% `1 I
unhonest-service
; e, ^+ v' A, `: `! Goscillation' D& ^0 f* }/ g8 V
rand-dynamic
- z0 v' Y4 S+ i0 D8 u]
: p. t4 B3 E0 q2 r! c; K5 p& \. _& E) G
turtles-own[5 u) h/ q8 r, {
trade-record-all6 U1 b) j4 {. B, X
;;a list of lists,
trade-record-one组成4 S- k' E8 ^" l6 V2 M+ v
trade-record-one
6 O3 B+ H7 J; I: X- o% [% _( w;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  X/ \7 ]% [: ], }/ B6 r( V$ W  B- a$ `# N' I1 a% W" V1 {. X) K9 C
;;[
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]]
0 {) K& q3 P% \( vtrade-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]9 o( }  ?, P, c. Q, ~
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list
2 q% Z. Q" Q$ P) t2 c( Aneighbor-total4 ^; ?/ H; _: r8 |" ~$ \
;;
记录该turtle的邻居节点的数目/ p" t3 ?- k$ F* e
trade-time
* B1 W: @& F  m; F* E4 L" \+ U;;
当前发生交易的turtle的交易时间% T8 s4 E" l2 M8 a
appraise-give
& \7 N& o; B/ V. g5 e+ m;;
当前发生交易时给出的评价6 b3 O& N2 N4 y
appraise-receive/ T& Y9 Q- E! W& K
;;
当前发生交易时收到的评价1 n7 U0 E- h. H" G
appraise-time
% ]: o: p& g9 Z6 _3 E;;
当前发生交易时的评价时间
2 K: H) B" u2 @: D# Mlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
& r; t* H! A% |) k* K8 V0 I4 }trade-times-total6 }# O% o) r; i- j8 w( ]: S
;;
与当前turtle的交易总次数' U. ^9 n3 {3 U; R: @
trade-money-total
9 R, Z3 a$ y, E6 Y3 \6 ]& n$ h;;
与当前turtle的交易总金额( K5 z! v5 M5 Q7 n+ e4 j# Q
local-reputation
  I1 {5 T) b0 {; tglobal-reputation& v, A* i  t9 Z9 @
credibility" y) R. a$ Y5 B2 I6 Z5 L7 N
;;
评价可信度,每次交易后都需要更新5 Q. Q7 c# c2 f) Y
credibility-all
3 L4 x& u$ w! g# o* y;;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2 l+ k+ e9 L, M! @: t; j7 ]/ v, u

  e$ Y; x4 E, U( }( z, 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
; R/ m; r. C1 A+ n  z" ~credibility-one
* T  l" F: v! M+ \' N0 m2 R;;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 d1 l  P  h. M. Fglobal-proportion
& t* h/ c# V; d7 }customer
3 X5 K2 X) O2 x& y# _customer-no2 g$ e) I) s# {! c, a( ?
trust-ok: {0 g' N( p2 M$ c+ e) a
trade-record-one-len;;trade-record-one的长度
# |6 S2 k# x3 x# m]+ l5 b, x1 `2 N/ X" n0 H3 [5 f

, A& K* c3 r3 [' Y" i+ C3 X;;setup procedure
& L5 \  d* ?; t; t+ \' E3 w+ A' }, }8 l* Y7 ?  J0 s" y
to setup
  z0 o6 c2 P4 }1 Q+ C4 S/ E% l8 k0 h5 q0 N! W4 o( D# K
ca
: f/ f+ b1 k7 Y# K. N0 ]
  t4 e1 y  \7 B0 T+ _& Z5 e* b1 w
initialize-settings

3 c6 j* r8 }9 ?) ]3 {8 x' d* r5 b* r: b. i# A* U, F6 L
crt people [setup-turtles]
5 N! k$ F: y9 e* ?! u) G0 C

& }: n6 y3 ~9 l" C" z/ {5 Q( C% wreset-timer

  V# z" g# p8 S+ ^4 I1 g. B
0 ~' z) v3 k+ ~poll-class
9 H( V- o" p, Q! r9 q  r
8 |: E$ j+ c6 V. ?( z  Q
setup-plots

! J* ]+ d  `5 {7 U' W& \0 W: P6 d$ p' M& H6 {# t6 g. |( U$ f2 q+ z1 |
do-plots
3 t; a4 l2 A0 L# }
end
2 B, j* O6 u+ f9 Z9 [, b/ |+ j4 U
/ }5 G  g. M3 P# k7 b" Qto initialize-settings
8 \# p( R; Q5 k9 |5 m( h
, y8 i' r( O  M3 o. C+ z% d& O. Lset global-reputation-list []

% v9 @( x) P: N: P+ }
9 a8 C$ R8 @, J% Yset credibility-list n-values people [0.5]

( l, H8 r5 w4 @" p/ }. L  U* }; {: k- U  X
set honest-service 0
( D; h3 j) u7 m' @0 g4 ]7 Q* o

7 `) R1 k% c7 u' y6 cset unhonest-service 0

7 x" K. N) k$ X3 I: k
9 C% d8 U; y" X# r7 F9 u3 r, t' Bset oscillation 0

; @) M" [/ m, i/ |. Y! ]2 ^+ R( v$ \# M& [
set rand-dynamic 0
6 Z$ q' A/ R# K' q6 T
end. j( U+ v  H2 V! \

: f7 X' @  ^1 J9 \to setup-turtles
; e  o, I4 R6 q' {% Oset shape "person"+ V8 e- t7 h4 C+ [/ R
setxy random-xcor random-ycor
+ m. W9 G& ?) q9 b1 aset trade-record-one []3 O% c  Y* D3 z( h1 b

  e; p2 T% I6 d0 Qset trade-record-all n-values people [(list (? + 1) 0 0)]
7 v3 M, b# X0 Y0 I" V

1 |* c8 D8 S2 h" hset trade-record-current []
9 [8 n# f2 q: E. J1 k2 r, a/ bset credibility-receive []
0 J0 O# C  J. l; P& ]* |' s$ Cset local-reputation 0.5
( E3 v8 n* Z) Yset neighbor-total 0
/ Y( m% C' {8 F2 k0 }$ d0 v+ {set trade-times-total 0( k* ?: H4 C7 P9 m1 f
set trade-money-total 0
( V9 t% T7 |& L  o3 Lset customer nobody
6 z% W8 v- I' h5 x  E+ I4 Rset credibility-all n-values people [creat-credibility]' M9 X- Y$ Z/ O4 ], _6 \0 G
set credibility n-values people [-1]
/ @+ Q# O) J2 D# u4 }+ E& X2 Qget-color- x) p  ]" x8 ?" ]) i0 _

$ n# T7 [0 y2 d5 S. r: E  ^* xend! K: t6 |, j" O' N7 r  j

7 P1 u" D1 Q2 y) j  H$ B, ~! o" [to-report creat-credibility
; k; A1 L' K5 j" ireport n-values people [0.5]0 w4 \3 P. }7 |! [7 A
end$ d& r: a+ [- I& U' X

( B) o8 }3 @. y' ]0 C7 E/ Nto setup-plots) S; |3 u0 {2 @" o3 @5 k( R: }: W7 i

6 U4 `& i6 M% U( M* Sset xmax 30

. N5 Y1 D) k; z5 s+ N- E3 {
4 F3 K, Q( Q5 [7 {$ [$ Pset ymax 1.0

& C1 L; B5 W& t2 b" a- J: M) G2 a! u8 k$ e7 |- e8 f: K% R8 O
clear-all-plots
- U' E7 S0 _* z

$ @9 N& Z% N& h# p: k7 v' wsetup-plot1
- {: }$ G9 b" p9 h* h5 x
5 B  S' k- v) Y( S9 M, Y
setup-plot2

$ w, E1 O5 v4 z+ Q* g" _6 J0 H8 M- y" S# {) t* ~
setup-plot3

" G& H* ^5 ?8 V  p! M. ?. P0 f) c# xend) u) x- R1 Q) N* [# h

! S+ h1 a# S* u4 s+ T$ [, W( z;;run time procedures$ V9 }' \- d+ |# f# G$ D5 G

2 E: o5 Y! p+ Vto go& m1 V* ^* k" \2 j+ p

: p; Y, s8 N- p9 E! ^ask turtles [do-business]
' @! M5 Q' i0 U8 ^# t
end/ K) x: T$ I1 r: N9 S8 m# O/ @

6 ?2 M" U, N! Y7 S/ h" J' U. Kto do-business
. L$ A3 i$ _" n

* Q! e' U8 Y- J* \: B8 x6 j% i1 @8 w$ W0 b8 o! l, u
rt random 360

+ t8 |5 R2 F. e# M: R# `
; ^' j1 N+ b% a0 J7 O  v0 \& Ffd 1

* N! ?% Y: G/ Z$ ]8 V* U/ w. ~; H3 z( [8 E) E6 _- m  i! q
ifelse(other turtles-here != nobody)[
1 y6 K$ ^1 H5 y4 ~* v% w

- X! M. w1 N3 t* V; B' ~1 Cset customer one-of other turtles-here

6 |4 p' ~9 n3 a6 `/ H4 Q+ H- T  S( L6 v3 F5 f0 Z9 u; c% I
;; set [customer] of customer myself

2 n1 T" d) Z2 d$ `+ N( _! {& o8 {0 j: r2 c
set [trade-record-one] of self item (([who] of customer) - 1)1 a+ Z  K4 r8 F" u7 C
[trade-record-all]of self
0 S5 f/ ?+ P( b' W8 k* M;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 ]8 V# D1 _. b8 y2 F9 h+ l; q2 g% O0 ^. n9 g: u! V8 |" R4 ?9 h- H
set [trade-record-one] of customer item (([who] of self) - 1)3 C% B( O  c5 e% J2 u
[trade-record-all]of customer
4 u; [" j% N) W9 i# B0 Q" d

, }3 h' z& t- A6 ]1 m9 z5 tset [trade-record-one-len] of self length [trade-record-one] of self
- h9 u; _/ c: u. e3 ~, P) c% E
5 N8 x# x* w( E9 H$ V5 e
set trade-record-current( list (timer) (random money-upper-limit))
+ v7 @; ~. \! w0 \+ M" s
& H% r. Z/ D9 x
ask self [do-trust]7 @# c1 w6 A# u0 n# |/ k
;;
先求ij的信任度
7 x: w( W' ], F' Y8 p# X# m7 R" A
$ }# ]1 M8 P2 m' F/ xif ([trust-ok] of self)5 k6 I( E. g$ e6 i, [
;;
根据ij的信任度来决定是否与j进行交易[
7 E$ s& V2 B5 K' Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 B. w3 `( f! B; U( A* N/ H6 |( G' {7 i  r2 e
[

: D" r8 u4 Z3 g
( _" L: W0 X; ]3 W! x3 }7 \, e# E4 Jdo-trade

  B; H5 h$ S0 R
; }) ~/ G; j% B+ v  U( d5 R0 Gupdate-credibility-ijl
4 U* |$ ?& P  b5 ~7 L

& s: x. A: U2 G$ ]update-credibility-list
) A6 d' ]! a1 `5 ~8 n

, L* i6 r$ p, f( T" v: C" W' @8 W) u2 a5 j# b: j; W" M) W0 e
update-global-reputation-list
0 r6 a/ A2 }5 X4 v9 M
& x, W8 d/ ?4 ?4 ^$ z
poll-class

9 W6 F; ~3 |6 b
( M* c: Q& W7 [- iget-color

2 |- O+ P6 S4 f% E
5 d3 \- y$ K2 G4 w9 r]]
2 J, ?4 G: n- Q
& s4 e0 S4 M* y  k0 U;;
如果所得的信任度满足条件,则进行交易" X0 H) R# K, Y2 G0 ]0 S

6 p: a) Y6 f( T2 `) W8 \/ @; U[

& D8 ]5 p1 \1 o! w  k
6 I1 S  z' P1 Crt random 360

& A$ t) ]3 |6 {, R) `% v( q
) y) U6 M5 Z# X$ x3 ]6 k# I, Pfd 1

: O/ H8 X, r4 ~: H7 ]
4 x- S3 y  q) [+ E]

; p6 v$ x7 }, |
0 r! s' @- w+ d. l* y1 V4 gend
4 A! \' ?3 x* P- u8 C

0 f$ p' H% ?: `# ~to do-trust 3 L/ \" T1 s, Z  ^  q
set trust-ok False9 }* B; {$ s: e. `
; `! ^' t( w, {
! g& o) ^9 E6 F' j
let max-trade-times 0
; x  K8 j9 w" R4 Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 ~$ z+ x. i& M0 |# glet max-trade-money 0
9 p1 C3 k+ k/ j% Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% M1 z0 q' q" i/ ^( `6 W( }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ H# Y! o9 w/ `% J% Y% M! P3 m6 [3 G% Y; W8 }- t) I# c3 ~

5 g3 I5 N4 o# H# e  eget-global-proportion
0 f/ o$ P* V* D6 N3 b+ tlet trust-value# {' ]# [9 I8 N% Q7 f8 H7 `
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)

# _" x' I8 N: d: C% w# qif(trust-value > trade-trust-value)
* e# r4 B1 G% g) E2 F[set trust-ok true]; J1 Q) I- h* \# ~$ A4 f' }2 G
end
- J7 ~" _+ X3 c' Y4 `# j+ R, E! O; q; y/ p5 l
to get-global-proportion
- X$ M) z' h& D. ^1 V: ~ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* n/ }. Q* G, G3 }[set global-proportion 0]( H( _: X% x" ^  b) P
[let i 0
1 X4 a0 f6 v8 N) ~3 L. l% {let sum-money 01 _1 W5 i. u5 l4 H/ P* q9 K8 I. K
while[ i < people]5 ?6 e* R1 q: ], i
[
% F; W- G+ v# I% n8 c) Pif( length (item i, l2 }+ ]* H" z) @+ d& K, H7 c
[trade-record-all] of customer) > 3 )
! B4 O4 ?) `" `0 o* O* \* s
[
* S% |5 [# I" l- ?7 h! [$ l3 aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))' T4 X# g# w+ |* u! ?; n
]
- ]9 C' b7 q- w$ Y& a9 E]
3 o6 ^5 E. I" m$ U/ _4 Zlet j 0- b* ^* c3 H1 ^
let note 0- ^* Q6 b0 C6 D8 X
while[ j < people]( E/ d( h' e9 S0 k* O- g
[, A7 ^0 B" ~0 {/ I
if( length (item i
8 \9 d0 x' S$ V6 Q% H1 M7 O[trade-record-all] of customer) > 3 )

5 ]" u' m3 R; }( ~" q! e[' l: F. b/ ?) y2 L5 b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ a8 m4 \4 Q3 ?' \  i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. V" P3 T; g) z2 u# F5 R[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 d* f# |+ G% C+ ~1 r! \
]
% P7 F6 y& O" k* ?3 }. o; q' B! z+ V]
* R9 Q( n! Q8 C6 D# T5 l' Y7 e$ T8 bset global-proportion note) s$ i- ?/ t. z0 y
]4 ~8 J1 I7 }# j% R' g  D4 \* X
end
8 r8 W6 d& o" r: ?' u+ F* T" ]  ~- h: w" |) k  F* ~5 Y9 |& ]. J
to do-trade+ ]/ }8 j- x9 ]0 C5 d
;;
这个过程实际上是给双方作出评价的过程
+ [  Q1 R* a4 F7 D/ v' V3 jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 `+ n) A  I* g& Z. x+ o( Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. ]+ U7 g. Z: b# ^! w9 K6 Eset trade-record-current lput(timer) trade-record-current
: N! `# n7 [8 |/ O3 ^;;
评价时间
5 `' J3 L9 G" @) lask myself [
- ~5 [8 i) O8 n5 Fupdate-local-reputation
0 i' M& N0 l8 ~& `# @set trade-record-current lput([local-reputation] of myself) trade-record-current
% A: u2 O7 G* ]" I, q  H7 L5 G+ j]
* e9 [' ]) k/ y4 r$ Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 i$ q7 g& |! [/ g# G% a;;
将此次交易的记录加入到trade-record-one6 K) b, E5 E) O- W: F- v5 y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) x7 Q' K% O+ B; d# K- r  I9 Rlet note (item 2 trade-record-current )
+ _7 \6 k) L/ }; Rset trade-record-current" m7 `5 g, U+ g' \5 v; A* S* I
(replace-item 2 trade-record-current (item 3 trade-record-current))

# |. f+ Z( q- I4 R+ n* I4 \set trade-record-current
% a, m9 n4 z" R' W. w(replace-item 3 trade-record-current note)
9 I" f# k2 m7 X2 |8 o  m& `. K' F

: N7 J: U7 K. qask customer [
7 P" S1 r8 D" Y9 c! T5 t: W  iupdate-local-reputation
, N- o! {$ m3 ?0 |/ \: \7 S* Hset trade-record-current
. }4 V8 E9 |5 u  k1 v* _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
: A. Z$ h' {3 R- {
]0 Y! {8 w4 y8 [0 k

& X  S- K+ @) C0 }0 d' [& v; I  i

* U3 A" ?4 G! l4 }; l9 l$ dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, A: j5 X9 S& J' b! A1 \$ M
7 b2 Z1 \( {  h% b9 c* G- J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) p' O/ s, n6 G. ^
;;
将此次交易的记录加入到customertrade-record-all
; a$ s- ^  N$ d& O7 ]' U: xend3 A; l" u1 n$ x6 ~+ P

. e1 D) ]: e( G# y, ?8 ?  W" j6 oto update-local-reputation
" j% j6 s  J# ?# Fset [trade-record-one-len] of myself length [trade-record-one] of myself
! e; N# g' s' @9 D: y9 X  L; _4 S8 s& S% y5 Y) G6 B& A
) ^: j# O" @, \, o# D  b( Z, Q
;;if [trade-record-one-len] of myself > 3

$ i9 _) Q- C- kupdate-neighbor-total  }# {$ k: D: d7 f  K3 \
;;
更新邻居节点的数目,在此进行
  L/ C* j0 B. H: Y2 Q1 q8 o0 y% L. _let i 3" W# f5 A$ l, D& k
let sum-time 0
3 T: x5 _# i* m( E% p# K0 e1 Iwhile[i < [trade-record-one-len] of myself]8 ?/ |; J3 @5 y# {* a2 F3 v$ E$ _
[
8 _# h$ M: }: K3 mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): u5 a' l- ^9 F0 ]& e, _
set i
  F" L# T$ a+ F. u( i + 1)
" ?3 T) ?% ?* I' o2 r. e) F
]7 Q9 \; }4 n3 v3 O4 Q
let j 3- v* i' Y: l* B1 W. ~. M2 b; I
let sum-money 0
! m) H! R2 j* K; t6 x* c" Vwhile[j < [trade-record-one-len] of myself]& f' G7 Z2 u  g& B% x
[
; s2 r0 v* B4 p- ^" x, K1 Mset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 k7 j. \# S5 V2 {( \
set j7 p! d! {  }# p2 t8 O$ s+ g
( j + 1)
$ n0 {% r4 `) D6 i( f* U/ Z
]7 m$ M* t/ ~- r4 h3 t
let k 34 g" Y& s9 K( T* E, K
let power 0
- h& M8 F% W& U% H8 g8 ~let local 0
8 d; B, D0 J1 u' owhile [k <[trade-record-one-len] of myself]
. G& Y1 d. {) U. K  f[, m  o/ V0 V2 o
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) 4 [7 R6 J$ O" z% n! ~. M4 e
set k (k + 1)  A1 m, \# l. T$ g# Y$ y5 }
]& r/ E( y/ C! K3 q* C
set [local-reputation] of myself (local)
! M7 P- g4 ?: j& u3 D: F6 {6 zend
4 a1 t( l2 K2 n
4 f5 M$ F6 ~9 I# W- Xto update-neighbor-total
3 T- N  w* W9 w# N. u
5 a% X) {8 s8 t# Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 W- q1 M8 Y3 D1 n+ u% F
7 i  k3 T% o. o. Z
( Z8 G, C* @& [, ~! b4 g1 ~
end
; g9 ?7 O$ Y5 s+ Y0 d% V2 b9 d. a5 f4 J. K! J2 c
to update-credibility-ijl
3 _* X$ K) U/ A. N4 q0 F2 h( S  A, T: `+ E) [
;;
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。
; H% t* K: J3 _! A, Zlet l 0* b7 ]: N0 j0 g5 @
while[ l < people ]
+ Q+ ^/ N2 Y+ O3 e3 A  i;;
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
, T) J4 E& l# W' H. Q[9 L8 t. O4 J  N" E
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 j( J( n6 V- V; d5 Iif (trade-record-one-j-l-len > 3)3 O' S$ {& W, x3 _5 E0 ?
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one
; q( @6 x, c4 k; _  V- c9 v' xlet i 3' x0 _- l* M5 ]! e  @1 \
let sum-time 07 z0 k2 q" Z$ b9 @( e3 X. Y# d% F2 j
while[i < trade-record-one-len]- j* d# e  W4 G' }. w% D
[
* }. X. F, Z9 t6 I$ O) u' Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 p5 T# X$ R; {# m  n* e+ Wset i
$ i# ~: _9 M4 D1 \( i + 1)
4 b* k% n8 J( j- Z- U- b
]
% C: T+ n$ {" m( @let credibility-i-j-l 0
( F; c/ l) x( i9 F;;i
评价(jjl的评价)) K' h4 O( ?* F4 ?5 g; S$ z
let j 3
  h$ }& W+ \: mlet k 41 m+ R* K+ z4 i  F1 R) F- J
while[j < trade-record-one-len]- E  a7 P- l: ]6 {
[
3 {# U3 j! v% y7 G* w+ v, Ewhile [((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
  W! g5 G& t3 {( Cset 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: f4 y, M, u& C& j% l3 `
set j& |( F/ V- Z" e& h, L/ y4 h' g
( j + 1)

4 H& S3 Q" Q% N, W7 d]
2 y" ]' D2 g$ A; Y- pset [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 )), v. [1 ~) y% D2 V& c
% B0 Q! x* c& ~, B, u: w

. X( D" u; a& d" qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 v* r8 I1 y1 `/ m" q: Z. e! W
;;
及时更新il的评价质量的评价
% f( u7 d' R: o) }0 [$ Hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; W" q9 A* A. H& [9 f9 j/ s3 G) r
set l (l + 1): a9 b, K9 g7 B; l% C" t- q
]' B) [5 S  u, o9 N
end
0 V' Z! b& q* }# }
* V$ q* y: h/ l& y7 I; W" z3 }to update-credibility-list3 }; D! l+ p- p, j$ i, ~# b; n
let i 02 I6 f1 d/ r& p* j& d& ^1 z
while[i < people]9 E  W5 o# V; f1 y3 E7 [
[
; b( A* `8 H) slet j 0
2 P' t! Q- s8 I* a. Jlet note 0
; ^2 V! W- M- t! l- wlet k 0; ~) t0 R' s$ a! o, @
;;
计作出过评价的邻居节点的数目. [4 U2 I& q7 |  z$ z: d
while[j < people]' O3 n- _6 U( k2 f
[
5 v9 r* A- ~3 f: Q& Bif (item j( [credibility] of turtle (i + 1)) != -1): Z4 p# ~1 L: |2 C7 ]* z% F: P
;;
判断是否给本turtle的评价质量做出过评价的节点: F' z, ^% U/ H: E
[set note (note + item j ([credibility]of turtle (i + 1)))- M6 [# L! z# F# C
;;*(exp (-(people - 2)))/(people - 2))]

0 X2 A9 o8 Z/ V  Z" C% cset k (k + 1)5 y& X9 K, k2 Y* V
]
9 Z; x# N" t9 ^8 aset j (j + 1). w( I; N; \- H& Z9 D' C5 q* `
]
8 I( b" p2 F* u4 H6 Uset note (note *(exp (- (1 / k)))/ k)+ A0 c, L1 E# C5 Z+ V! E& M$ k
set credibility-list (replace-item i credibility-list note)* \1 m% l6 ?7 ]' b" g$ ^. T: I  L
set i (i + 1)/ y3 N# g4 ~3 G2 Z5 l
]
/ f" I; }# m/ M6 B  ?+ r/ gend
; L* V* _! i3 {. G1 c, ^& F- ~6 F& h/ b, I& o9 p3 x
to update-global-reputation-list, \: A* v$ m1 `9 }. P" W) w: Q: L  Q' V1 ~
let j 0* B; C4 o, @1 o3 a4 P- A; h
while[j < people]2 d/ q  `/ _/ ?: g
[
  ]# Z( ^$ ?: k+ slet new 0
5 R  t4 A  B$ i! ^8 f;;
暂存新的一个全局声誉% M8 G) m- f0 o# S" O
let i 0
; L8 t4 w$ m4 K) `let sum-money 0  ]6 {& W, L" j% K
let credibility-money 01 C) T4 x& U/ d; ~. [
while [i < people]+ y! I: u" n( w+ h
[
$ {; Z# n% d6 @4 @set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))7 r) D1 }2 f: F& L% u
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( }# c7 i6 g% }" Vset i (i + 1)* K" _* Z5 Q2 {
]
$ R  O( C9 H, S! X! Z  _! [% glet k 0' G, i6 P4 E( `
let new1 0+ Q3 \  N; |- @5 e
while [k < people]+ [2 |! {# j! `6 X, k0 P$ S& E! ^
[. I9 w$ p8 r4 T* v: j: n0 Q) o- P
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)
  ?& f9 Q7 G' N! U% r# kset k (k + 1)
' r- Q! @' a4 r) n5 _+ J]
5 h* Y% l& Z+ S% _/ P" T6 Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , `3 Z+ r$ [" L7 @  ~
set global-reputation-list (replace-item j global-reputation-list new)& G9 ]& L7 z/ T3 i; H8 G3 U( C
set j (j + 1)* ^& H8 C8 [- B* T1 v
]5 Y0 B+ B; l! p) S" X3 a8 m
end3 t, d3 d1 b: `4 U# s; Z: r

; \% P% d' ]6 x/ Z/ j
$ D+ ^7 Q$ J& Z% v9 t9 f( F! G# D
4 W7 Z" z3 q7 J7 g+ Oto get-color2 Y  m2 o* c" Q# D( n) Q2 L
! D/ h& m  J' q; t1 o' i6 W( `& k
set color blue
( U) t1 l4 l2 f; S# q+ [! c1 D
end' ~" q9 r3 n! s% g1 l
- T& ]% A' u: w  k$ K+ q( z# ~8 a
to poll-class$ _0 ~( u3 f' W* {( _0 b
end# R! X5 X! H! Y6 `
) K! f! V2 v0 H
to setup-plot1, J, y: r* ?1 L: A7 z: i
0 d( M, [1 v, h. c  M/ D
set-current-plot "Trends-of-Local-reputation"
. K' {% p; {5 T9 \" _' @/ p
$ [2 w. C. V) d" j+ G: d3 e+ z
set-plot-x-range 0 xmax

  {+ Q# Z2 I: D9 l8 I/ r" v+ l
) w# q; W+ f- s* yset-plot-y-range 0.0 ymax
9 e4 \( w  A) E
end
4 m2 c8 a, D7 B3 I/ i" v1 C% V: O& v  \' A
to setup-plot2
( F1 k' e6 x6 W0 |: i6 E0 r4 c
/ n6 Y, R9 @) |1 w( j' k& ?set-current-plot "Trends-of-global-reputation"
1 V( l& {( g" l+ A% O9 J1 s
, N9 J* ^) ]# M! d3 P  q& e
set-plot-x-range 0 xmax
8 Y% j1 W! N& W9 ?8 F

6 l, i5 Y9 t& \- h) R' Y  p! Nset-plot-y-range 0.0 ymax
, V! }7 w* o. {7 l% f
end
$ W+ Y' s, [- o% x- o! \! {; ?& l6 ?: F8 H( q+ D
to setup-plot31 f/ F* H  s- z8 h& T- W

: N7 h: r; ~. E  vset-current-plot "Trends-of-credibility"

4 J5 P* X, [: j. j) a+ u  b! F( l- y! I5 h+ s
set-plot-x-range 0 xmax
/ q4 y7 e  {& U) b; ~5 V

* l& x5 Y8 M. \! C2 g! h. dset-plot-y-range 0.0 ymax

0 q9 c7 r. Q: E7 @  B0 @( a, aend
* y! q1 N3 Y/ e8 L  ]8 d. |& Z& p7 y2 S2 q5 E
to do-plots
" t7 r; Y" A. K# u4 lset-current-plot "Trends-of-Local-reputation"
0 o2 t) I7 B7 m+ h& u  [set-current-plot-pen "Honest service"
' x( C; Q  ^  U0 Fend
6 x/ ~+ s& Y) S5 g* L! c. F1 Z. _: s; r+ M- q) K  q
[ 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.9 S7 }! @  S$ B7 N8 [

' n; N# v6 Y3 v: W& c, i, v4 q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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