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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:. C* E# t7 f- u; c& t0 c! [
to do-business
7 Q# L! N( p' O( m# h0 j rt random 3609 T0 h' Y8 _0 ?
fd 14 K4 P9 W* G8 w$ J: g$ k) }- G
ifelse(other turtles-here != nobody)[: m8 e. o1 r+ J2 z% i  m
   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.7 c9 J1 \7 f6 I2 P0 \2 Y; t+ N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 q2 \4 f" O% `  R   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 b! @) i& ^' @/ a/ R7 l   set [trade-record-one-len] of self length [trade-record-one] of self
- _3 Q9 T. Z, \4 v2 o   set trade-record-current( list (timer) (random money-upper-limit)): p" ?  s0 Y' X

) {* [+ B  L/ m9 ^5 D7 K问题的提示如下:
7 t" l) P/ a& R5 C6 F, X! u; u; h3 z2 A2 o( @( D( R3 y- F
error while turtle 50 running OF in procedure DO-BUSINESS
3 I+ _8 u: v/ K6 Q( @  called by procedure GO
! T- y* O' `! W& H+ WOF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ R8 |* o3 b* H" l$ ~5 u
(halted running of go), h' y3 I- E) F/ ?+ n, m
9 D6 Z4 v* A7 _6 ]4 Y) 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~~3 E3 P6 L0 r: n/ y( I
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2 M& ?  X% f6 G$ k% p
globals[# q! r: u3 s7 D9 @% N
xmax4 v: P" b3 B1 H6 g0 b: P; d: C# p7 _
ymax
- ^* G# B3 O# u6 X# k5 V0 `3 jglobal-reputation-list  ?# h3 F' o& H' X

- _4 ?9 B/ v) \* H6 |;;
每一个turtle的全局声誉都存在此LIST: ^  }. }# |5 w
credibility-list2 G& ~4 j2 l* H0 C$ @
;;
每一个turtle的评价可信度0 d$ n6 l- g5 G3 X
honest-service* C) |0 c" e, I8 u4 {0 c, R
unhonest-service/ O$ i3 x8 D+ @  ]7 Z5 \
oscillation
/ p. {( C; {3 ]* _/ M5 n4 [+ ?rand-dynamic6 I. }) r% W' Y) R
]
- v: U5 \- P; b# Y0 H, e; ?
4 j4 H9 V; [+ v/ _- \turtles-own[& l4 Q" N1 F3 O3 }; J
trade-record-all
7 s/ E0 r6 e% D! S  [;;a list of lists,
trade-record-one组成1 I5 E/ o# G: X2 P% `% B5 L
trade-record-one/ r* x; Y' T8 H! R% R7 K. 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7 Z2 P3 H: m. _& R

/ ]2 |9 N3 m7 i4 J6 t) g: q" y5 o;;[
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]]" n" u# R& c* g1 J' u/ o
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]7 d0 a8 j1 b1 @* `+ j& B
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" k. j5 V; h7 n
neighbor-total
" o! g( W; I: E# O7 |+ m;;
记录该turtle的邻居节点的数目
' d! Z) B2 I4 b4 L% t5 I+ _) Vtrade-time  G4 e' r/ a5 \) c, k6 O; k
;;
当前发生交易的turtle的交易时间4 w" i/ w: c4 e) x, w4 q, L2 K
appraise-give
4 k5 w7 {% ~$ \& k' L$ }: ^( q0 d;;
当前发生交易时给出的评价
/ g3 E0 h, z6 Gappraise-receive
0 C7 ]& F$ R' j8 K: t;;
当前发生交易时收到的评价) Q5 n& n1 u- a0 F
appraise-time
# c" P* }- z8 M2 N; {+ I9 E;;
当前发生交易时的评价时间
/ i' K( J4 ]4 Q9 y$ A. ^local-reputation-now;;此次交易后相对于对方turtle的局部声誉1 Q! v6 E0 @' ]0 v
trade-times-total4 W3 ~$ G0 `1 v* e
;;
与当前turtle的交易总次数' u2 d  W% h; W0 R$ c' ]2 p( m
trade-money-total2 Z- y5 c* [* B" U# W1 {! N( ~$ m
;;
与当前turtle的交易总金额/ p8 r& C# r/ Z) X- V
local-reputation
4 j3 j0 E6 Q- c7 w0 j  }1 ]4 Nglobal-reputation
3 L/ J! g% t4 xcredibility; C) E) x% F, E; j
;;
评价可信度,每次交易后都需要更新
2 j; ]' c. s3 B6 l' I6 ?) A# jcredibility-all
7 {* g2 F1 a/ h9 F6 U! q& i2 N5 `2 D;;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- m' v* x: u  Z8 F# h
$ U8 O0 z& S* q4 a9 O% @1 f# ]
;;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
( M1 v) U( O0 n* T  [7 Pcredibility-one0 X5 U, _. S- r3 U5 t  _8 k1 L
;;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+ p+ p- i. v, g% i; K5 M" F
global-proportion" O2 Q8 G# e9 J, o# l& g( N
customer8 t6 {( l0 w& |+ @% _8 ?" ?, E
customer-no
" I$ t2 \5 T" V: `& U5 Strust-ok
: `# v8 P" L: strade-record-one-len;;trade-record-one的长度
: O0 c+ p% S  v- ^]
% k" @6 P0 L4 V
4 H+ c5 I! }" d;;setup procedure5 f  k' y; g; d9 K
. }* k9 u1 C1 }  W- Q
to setup
2 }/ O% x5 ]& w/ L) v8 N: c1 |, M1 g) t' s
ca

) I# j# Z2 e- N5 w5 j* {- s
6 `2 X# p' q: k2 Iinitialize-settings

' t6 t; F- D0 R5 N$ ~+ A
% M4 {$ o0 |( Scrt people [setup-turtles]

! K3 m5 Q$ C2 p/ [6 @1 Y# I5 q' u: O0 ~1 |; X- t
reset-timer
- }+ g. q7 B' ~3 ]
: V. _' N( [0 F; O
poll-class

/ f2 u% x1 P7 ?% K
% R+ ~; e; P' k, A% J; lsetup-plots

$ K/ Q' \5 F5 I+ k& G& `0 a
1 p) j6 H$ s" f: e' {do-plots

5 [4 v, x4 `7 \end5 T9 P9 k) L- p3 @  O: F

6 u# B. @8 p+ Q% b' Yto initialize-settings+ c3 B/ n) L6 }8 R  e, I3 k7 l

. ~. D- S6 {0 h" }. g0 T& Oset global-reputation-list []
- X1 ^1 d# t3 A

% w( e5 U8 U+ \set credibility-list n-values people [0.5]

# C; Y7 ^2 Y' @0 Z, r0 c! ?8 J8 A3 x1 V. E9 a: U6 L) y9 i
set honest-service 0

: o+ ^! ^: |# ^4 R/ j% G7 {& |/ s* ?, w8 J9 n
set unhonest-service 0
6 ?4 p' X9 J' V) G2 n8 p; ^/ T
6 n1 A* m$ R# i' U2 }: t# @  L3 ?$ J
set oscillation 0
, v7 \: h" y( ]+ F

& R3 W+ L$ {0 A* b- Jset rand-dynamic 0

* m  r8 E1 O- x2 Aend
4 y% A  w# z# {, `$ h1 y* f7 H0 Z3 [: V4 l1 A7 Y( W: Q  a, N
to setup-turtles + W0 c7 N& m4 S* C/ v
set shape "person"
/ c. o7 y8 {7 S/ o# ?setxy random-xcor random-ycor  O' Q5 y6 Y4 y# v3 [* K4 P
set trade-record-one []
4 ~' L& a0 N  w

* x: I5 S# P4 V0 x) f" @set trade-record-all n-values people [(list (? + 1) 0 0)] ' `6 A4 F) Z# [$ \

4 ?0 A: N3 g# R  |1 Dset trade-record-current []
% S" i* f7 G( t+ h) d+ Vset credibility-receive []
3 H  N9 i1 O; `1 wset local-reputation 0.5; d9 Y$ |( t" [7 p( W; N
set neighbor-total 0) N' |7 F' Z: g$ l5 E6 ^$ a/ X
set trade-times-total 0
- ?$ h- A5 o$ d, @: }  v/ S. ~set trade-money-total 0
0 s" k' Z! Z/ y% _$ n5 w  V1 @set customer nobody; y- ^; Y# Z$ {% f/ }% o! o9 ^
set credibility-all n-values people [creat-credibility]
; U6 V( y- E9 T# Y$ rset credibility n-values people [-1]
0 B2 |2 X0 n7 h1 Z* x* ~get-color
; P; x- Q7 m" Z2 ?3 h
% `+ O4 f& ]+ H5 ~: K
end. l8 v: b5 l0 g$ v$ o4 w

3 e' ^. K; {' f0 l( M" lto-report creat-credibility8 A! G$ E* u1 s6 ]+ T9 t
report n-values people [0.5]
# y) i9 P% f0 a  ^) ]end' z8 e* ]0 f8 D& B
/ ?- v" b7 Q/ D3 v3 i8 ^0 G( m, X
to setup-plots
( B# b; _! U, H
9 Q* b; I# u$ c. g! q) p$ x! lset xmax 30
  H% j7 u4 M! A# l+ K
2 W; b! L3 L+ r# Z9 O' O: J2 t
set ymax 1.0

1 w6 H& _/ Q3 X& _
) ]2 ~2 z9 x; k" nclear-all-plots

# o! f& W3 L& Q: k. y9 Z& q) }2 p$ L; K7 C  b+ [, ]
setup-plot1
4 M. h5 i, G1 M8 C% K$ n: t
! b" o7 T7 ]: i+ b9 j$ g6 l
setup-plot2

3 r% H/ h; ?$ r/ |' k9 k& K: D
, t  M& `+ H2 I: jsetup-plot3

+ V7 u! a8 F$ S8 h4 w( Nend
: U% n# g7 I; E) S, j$ \7 t
! ?8 h6 _. ?3 k' q;;run time procedures; O7 x! w2 D+ q) K% j; s2 d
7 d  z9 D1 ?5 T: E% Y1 U, Y4 J8 S
to go
" ^& \/ y" {; C6 l. v( G, e- n1 c: x, Z# [7 d  M* V- H
ask turtles [do-business]

+ b: c+ b" l3 a+ Bend, u3 [4 ]' T- W+ K& J7 J
! v$ w( @/ K. o3 b
to do-business . @6 |6 `* B0 t* n# \* X

: X% @0 B8 g$ c# I& W2 l7 x6 ]% V
* q. Y: e8 ~; `" Nrt random 360

( p  Z3 Q$ A% S- _1 j% ?5 z' k; _. ]7 D
fd 1

5 e$ G7 B* `0 p7 M
( P, ]. y: c2 D. T/ _+ X* oifelse(other turtles-here != nobody)[

4 F7 \8 y& @: M6 L4 I1 e9 q! P  f% ~4 N( k
set customer one-of other turtles-here

& q7 k+ W( A6 l) E/ \: u: D7 N- s/ j- s1 w, K& R
;; set [customer] of customer myself

: L. d' U+ P# V6 w9 H; X/ s# p& K( x1 q& l  Q
set [trade-record-one] of self item (([who] of customer) - 1)
' m' K  N/ V7 s[trade-record-all]of self) p* A! n0 ~/ l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ f: S' }1 x: r0 j+ C% T. U' A( G% K
set [trade-record-one] of customer item (([who] of self) - 1)
0 h% a2 U  a% c[trade-record-all]of customer
- `* T; E; J) I* B- b4 h6 H

# w% p  O' k9 F. Z6 W7 eset [trade-record-one-len] of self length [trade-record-one] of self

. @, w" z; O6 I8 B  R8 v4 B: ?4 b- a' Z1 o6 Z
set trade-record-current( list (timer) (random money-upper-limit))

$ u6 D- |7 _8 l
( y" e3 K% k' d, j  |8 |& Gask self [do-trust]# l8 W) r* e, Q! S4 \+ v
;;
先求ij的信任度
) k3 E5 F& v9 S% ^  _/ ~5 \$ h4 S& M4 l- g( U8 |
if ([trust-ok] of self)2 R' t- W" ?7 h+ b
;;
根据ij的信任度来决定是否与j进行交易[
3 y  d" G# d- g1 wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ I: k6 r$ o6 `: v- C
( M1 B3 q6 T( `/ B7 C- w- k1 N! a
[

1 F- v/ C% c* J) t. Y
% e8 Z9 _; ^4 [4 B5 F1 B1 Odo-trade

/ J6 l2 H1 }* A+ A5 Q! c5 p1 G# w
update-credibility-ijl

% g6 g6 r3 [4 }6 |. g& i
' ]( D/ R* U8 m) q+ {update-credibility-list
5 h! M2 v9 E! ^+ i# t- q# \& o( J
( u; U- _& U; \) M- `8 j  l

5 n9 t$ ~7 Y: W& d/ N4 }) zupdate-global-reputation-list
8 [5 M$ a! P5 E

. D0 P& g* U: V3 {+ ppoll-class
& A. D! g& g/ L7 [. O

$ ]& i) g/ b( fget-color
. \( c& D+ N  g2 A. E
' i. A2 d4 \# B
]]
6 Z- l+ c$ e) G4 i8 U
7 Q# j8 i% Y# b4 u4 a: d+ F;;
如果所得的信任度满足条件,则进行交易# x& X1 K; B7 c. v8 d" Y+ B

- j5 l! Z% k8 n$ `9 C/ m[

$ ]! g  W  q; v% @5 U: m0 l! _* k( m. }, L: P& r
rt random 360

' x* g9 ~+ c9 \) _6 _( d" d8 D# R: ~. d+ i1 ?! H) k6 l
fd 1

2 a  I, P' b  U6 [+ n" c" i7 x9 ?. K% M0 b  k  G/ z* R
]

) h  w- x6 r6 W& ^# r, }' t# ~! F# c0 a# A9 R
end

# X% e/ f  I; i# F; d3 H3 w$ w6 _2 E( s  U2 ?4 y
to do-trust 6 T5 {$ \# Y+ d$ {
set trust-ok False! i; Y( q: V4 }# I9 p* ]8 Z

1 p* d% d8 T( |% ^
2 x0 _. H# I5 ^5 R' e
let max-trade-times 0
) W8 j4 j: z  [2 g; a# wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- p3 X# p2 o  J2 mlet max-trade-money 0+ d1 N4 K; j7 V! V, o
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  t8 f7 S9 |: ~7 Q8 O
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 z7 @4 t) z) k  W& F( A% l
, Z: O+ H! Y" \8 o$ N, x

. U, e6 m4 y2 @/ \- wget-global-proportion
" p# f0 ?" e9 l* I% S. g7 Elet trust-value2 k( p$ c$ r' K
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)
9 N  c" [3 `% b" k# c
if(trust-value > trade-trust-value)  E5 t2 z& ^6 P& X3 V: K
[set trust-ok true]
" ^' K  @2 J; t9 u  send/ t- _$ O/ m* ^6 o

+ q; L. c: W$ I% k& u5 r5 @2 v, }: p6 W, v+ Zto get-global-proportion
$ b9 h' E( O8 S$ ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 b* y7 \3 T# E3 a[set global-proportion 0]  B8 Q+ n8 n2 [2 e3 v# t& g
[let i 0
* P( C4 v4 D+ K' i! `+ ?1 xlet sum-money 0
8 ^/ }& {' Z/ _while[ i < people]
: @1 N4 B- s" G2 {& `[
/ V+ x* J( k, l# W& e. K# Jif( length (item i1 K/ @1 A1 j' C+ n: _1 g
[trade-record-all] of customer) > 3 )
! D# c. B# S7 h' P+ n$ ~
[
8 x  x* j7 l+ R: D  g4 ]) [* dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  o2 ]! T+ A. i* m: s" n0 U3 l]
* Y6 t, S" h6 Z]
: C. p  G! _5 S6 Plet j 0% ?  v6 r7 c# P5 m7 l
let note 0+ t& k2 |; _4 T! j  S4 J
while[ j < people]/ g# ~8 F5 f6 \' a/ v; c8 R+ }
[
  v- k+ E! T$ @' Qif( length (item i# u$ N7 ~5 U' D& e4 x4 r" b
[trade-record-all] of customer) > 3 )
" {. Y3 O3 s4 ^1 I: d" a7 y6 b
[
4 p3 G5 N8 C& y% wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 f7 ?& _( A  B" B/ J$ b6 P
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# }: ]7 n1 N6 ?+ c& E8 g: z' ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ ?! L3 m1 R4 j# m# [1 Y]
6 E& o" {1 i& z4 m. d* W]. P! m7 t8 d3 c2 m* [( }0 V0 l7 S
set global-proportion note5 d2 u7 [! z% r. k$ p+ C
]" Q, o- C  }+ q1 B' [
end) L% J! k& B* T0 k- K  a8 s. t5 ^0 M8 X

9 \! D: h. ^7 W" a: ?- g6 m6 n, C/ Gto do-trade( k. D- O2 d, _( d1 h
;;
这个过程实际上是给双方作出评价的过程5 X; G2 Y0 v! O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 L5 M5 e5 ~. ~5 H5 K
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ R5 Z+ l( {: F4 Cset trade-record-current lput(timer) trade-record-current- b" `- P( D3 `$ Q+ [# b  ^, X
;;
评价时间" l2 s) d* S, `* p4 n6 X2 H" P; \
ask myself [
- S! \  e* }! U: T1 ?) h0 gupdate-local-reputation4 E* R7 ]& U! B6 l9 O6 R6 F7 z
set trade-record-current lput([local-reputation] of myself) trade-record-current
( M" I# m; d: x( K/ w( }]
0 _1 m% h( X# o0 Y- Y- ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 N: q- Z( y# |7 ~$ O4 O( L6 T( \;;
将此次交易的记录加入到trade-record-one
8 {7 I$ i+ h* ]set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 k! J4 o: v* H  @0 L0 s% ylet note (item 2 trade-record-current )
/ I" ?0 @8 s/ C: A* L8 M3 m8 T2 sset trade-record-current
% z7 G  C' i5 Q5 f7 s(replace-item 2 trade-record-current (item 3 trade-record-current))
& @  P, z# {4 g" I6 ~/ ~
set trade-record-current" L1 k) u1 ]2 \, D  e' \6 q, N. K# u  K
(replace-item 3 trade-record-current note)
& W6 [4 X" V' h& J- K% V
/ R8 M( x  C5 X! x8 S1 u- N
& Z* g7 y, Z, G3 x1 \3 I9 ]- L
ask customer [- F% T1 _8 K, S0 p! B
update-local-reputation
6 N! T8 ^2 s* }8 K, f# o* }  ~3 bset trade-record-current, v. }* s" m" d
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 I+ e) A  O$ J8 N+ o- V
]2 U( g* m% s8 L( @5 o

* ]& F4 |1 K( N4 K9 u- a
% x3 U. N& U0 v+ q) b: f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ H9 i7 A( y! W7 Y4 P3 {! m
3 L; E" }7 T. _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 i8 }# T: k. p;;
将此次交易的记录加入到customertrade-record-all' i1 O& L. o* A6 a5 l
end
, v; T! U8 i" }2 w2 o+ _% b: R0 {5 I; {+ U! f  w6 L
to update-local-reputation: }  y2 a1 I. v, e) k7 v
set [trade-record-one-len] of myself length [trade-record-one] of myself& Y1 a2 @# i$ L! U+ J

; a6 E& t. d" P) N5 w0 m* ?# f7 @! s% E3 p, c6 X8 m
;;if [trade-record-one-len] of myself > 3
3 n+ q$ Y7 W1 ]0 Z7 V% G
update-neighbor-total* O$ k1 U9 U5 l) M. R/ h
;;
更新邻居节点的数目,在此进行
2 C) P' y2 `) h( Z! `let i 3% D; x/ v3 W1 [  v
let sum-time 08 E- m& i2 [+ y& @: R/ J! H
while[i < [trade-record-one-len] of myself]6 Z( u* P* G/ t# N: q* z7 A7 H
[1 K+ U/ t( h$ y5 D- J
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ C+ K8 N  k' D2 U. T! y
set i
( t1 s3 J2 U3 J% R( i + 1)
7 F+ u- C8 h8 s0 J
]0 D% r3 ]- U0 D
let j 3- r! I- f4 j8 _2 |% y1 g7 V* p6 y/ [
let sum-money 0
% X, Z% L/ I0 u2 Ewhile[j < [trade-record-one-len] of myself]
: s, t6 M4 y5 t: S. q0 t1 k[
% r& Y. \3 U) Wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)# ~  a3 w) ^( X' A* k
set j/ p4 r6 M, ]1 j. q! S; a$ f/ ?
( j + 1)

! y2 \# K- V+ h4 Q5 n6 d, m1 W]8 g6 I, ?0 m. M
let k 3( @% Z  G. f% p
let power 0+ O% D5 J5 S9 [% I8 F
let local 0- `1 C/ B# M+ Q. Q( E
while [k <[trade-record-one-len] of myself]
* N. e  N& I. }. `[
' c4 A% @, `% v3 ]6 U; }: 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)
6 |+ N/ @/ T# p) j' _$ eset k (k + 1)
& L; O% }# }$ ]  j0 @; _]$ @  v# u% _/ g3 e2 h% l3 O
set [local-reputation] of myself (local)
! R, U+ [1 Q" E+ ?+ X! ~end
; k% C% k# O& B  e: r
9 n) @8 [0 n2 C" Y& X- }5 Z* @5 Oto update-neighbor-total
4 y3 K& F! L6 |! G5 y  k2 l$ c6 C- q" N* {: Q% n5 c) a+ `+ b5 L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% X2 r8 {( _) ^
9 Y! L( G: g+ f& G; i3 b0 a

  o* f' o9 k: j' L2 ], send
" }7 w- B5 n' S1 Q2 r3 \
0 i3 s; f* T' ?to update-credibility-ijl
" S8 ?( Z2 k' m) C4 \3 q2 ?7 d( r% y: t" Y) m  F
;;
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。4 V' D# e+ C9 u' a0 t1 i4 i
let l 0* a. r/ J( H2 i8 f$ }3 v
while[ l < people ]
- }; [: }! J7 G" [4 f5 w  ]& 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
/ {4 b- ~' T9 v, A) U[
2 X! X  T) ^7 {- E7 }: Q: Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)) |/ Z4 P7 u+ H2 o. ~
if (trade-record-one-j-l-len > 3)
, \# ]5 k2 j3 Y9 B" I$ e. b[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; `' O6 h! ?1 U
let i 3
7 q% p, G, z' slet sum-time 0
0 s3 W( c/ ^9 @8 K- A* Awhile[i < trade-record-one-len]
4 a% i+ F0 q: }% t1 ^. J[$ E2 R0 t/ ]% b* ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), }) j% T0 }# s1 F
set i
4 X) f5 K& F% o( i + 1)
6 u1 |9 {0 g; A) f4 m
]
/ Z% n) A$ ]8 nlet credibility-i-j-l 0+ J# ]7 z& d0 P, q/ a
;;i
评价(jjl的评价), H; d& O8 h3 h- K" {# j  w& ~9 h
let j 3
8 Z# Y. s% m9 q5 Q8 e6 qlet k 4
, }* i9 k! F  F2 O9 s# T: ^while[j < trade-record-one-len]
# g0 _4 Z* u5 }2 |0 @[- R. M0 {; m' }! x1 w0 j) B7 Y
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
/ N. F0 h0 g: ^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)' ~7 X9 D3 e( Y3 }; |' l" [
set j
- M  c+ ~% a$ p2 c7 f# V( j + 1)
: I0 q  ^$ h$ M( ~0 C  w
]
4 }6 Q1 m( B# C% q+ kset [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 ))
0 k; M' Z7 v2 T/ N- u+ E
5 Q+ [# u0 b' e. M; w4 T
$ l7 E, c& G5 o
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; u# d2 q- w* ?;;
及时更新il的评价质量的评价4 G9 f: z9 w6 B. {1 l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ X: H+ ]1 O( t* _3 q, e
set l (l + 1)
6 T7 y  @5 Q# R: O]  x  Q! M" c9 J+ e0 G" Z! f4 y0 P
end
# d* g; q, j' m; ]2 U
6 r( j' q% m5 B1 ]" Oto update-credibility-list
7 T, p) K# Z) _. u- ^* S! nlet i 0
) G; Y7 {5 B5 x. q% [; _! _while[i < people]
$ Y* B5 c2 A6 V[+ T. M! M8 Q" i) W5 Q! g
let j 02 G* T' w$ u: N7 @. j# T
let note 02 K$ ^6 `  \2 Z) a& P$ d
let k 0! f+ x& w, @, J& D( l
;;
计作出过评价的邻居节点的数目
- L, k# u' T, y9 p3 k" Qwhile[j < people]
2 k+ k. q  Q" L4 v5 w3 P[1 t% I, i1 _* [9 G  j
if (item j( [credibility] of turtle (i + 1)) != -1)
8 {  z) N- O& X# u! o2 b" J;;
判断是否给本turtle的评价质量做出过评价的节点5 u; N0 t' W0 b! a. T# X
[set note (note + item j ([credibility]of turtle (i + 1)))5 g1 E. q  {& H- ~' T; x7 E
;;*(exp (-(people - 2)))/(people - 2))]

: t+ v" Y) d4 z# _. d/ p, F7 Fset k (k + 1)
5 M2 z0 D* [5 @# b; C$ p3 Z]  W8 E, z+ H) [* C" O
set j (j + 1)
+ t! k- \& Q- P3 }8 ^: o/ D$ e]+ F; d1 y( V4 a; j1 z) C
set note (note *(exp (- (1 / k)))/ k)
( g0 i6 I1 I6 _0 M! L! [set credibility-list (replace-item i credibility-list note)
* R  M- j# ~! T* C& C  q. M* Fset i (i + 1)
) g. [  `) c) y: U) C]
- p7 {6 @, |9 L9 |5 f# jend; O6 h! I" y" v+ X

" f6 w( C" I& }' d" M  o  Fto update-global-reputation-list) M" ^: \& g  t4 Q! h; ^
let j 0
4 C! @2 I% r2 rwhile[j < people]
5 t& Y* q- Q$ s% F: p, {[/ H3 Z; F1 S' A2 [$ B8 ~
let new 0  D& n/ F: b1 o, h* o! c
;;
暂存新的一个全局声誉; ]) ^# \: N. t& O) z8 h
let i 0
: {/ `2 s% x$ h7 ?" d8 |; nlet sum-money 0
( G# l2 g) j. k- k2 e+ r2 ~5 ylet credibility-money 0* a: c) Q7 U2 I+ U& b% ^0 L* P
while [i < people]+ U6 B8 S. o7 y
[. G& t% L+ w, K1 k! q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 B# n2 B5 Y5 G) H+ q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( E& d8 V5 B& Z7 G. g
set i (i + 1)# I) j$ L6 a4 {7 i6 T. v7 q3 S
]7 W: q6 x0 b, t- ]
let k 0
, q5 t" X) R8 J6 |+ Mlet new1 0* ?/ Z- i4 c/ }! B
while [k < people]
6 Z. ?) P; k( }! f1 m: r7 C+ r( K: p[( J+ N( D& o( j( M0 \8 q
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! z2 v" z6 ^: s3 Bset k (k + 1)) @; ~4 ?! Q9 b! u) d
]
( ?$ F" z! R2 S* e- U; F' ]set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * Y" v  a! _* o# b4 e. I
set global-reputation-list (replace-item j global-reputation-list new)
8 w9 t# q1 K2 ~5 Lset j (j + 1)
" I" k8 e+ b5 p$ ]]
. i8 f) u4 ~7 Iend) c; |1 R6 {/ E) V: U

) p5 {' S, l0 i& |4 i/ l/ F
7 s) d8 H6 q' H8 V, x* `4 P9 o6 I$ l( `) n: x
to get-color
0 @3 D6 b' Q1 }  C9 H7 U
/ i/ S7 [% P) k2 I$ Y8 lset color blue
2 Z9 Z% @4 M# T' G0 y
end
( d5 ]5 n) B8 w) [  T$ g
5 _! p* L" b6 [1 t1 ~# Ato poll-class
8 V1 V. o  o8 ^- H* Wend" n/ M' {0 j( }; e* t
  j- X+ ^- h8 c3 f
to setup-plot1
1 v5 H: W& ?$ c7 n) e( |& G( g3 g- K/ u% I# l2 @
set-current-plot "Trends-of-Local-reputation"

+ o3 h% n) T6 K# Z  B: R0 _3 [3 z
set-plot-x-range 0 xmax

# m; e5 C  R2 S4 n, m" }
5 }' d$ }6 k, H8 {set-plot-y-range 0.0 ymax

7 J1 D: t5 s% C$ Lend$ v" B. e! G! e5 K
; }) Z$ N% J/ j' V, [8 S7 c
to setup-plot2
+ a# A+ `5 P. ~( t. k7 @2 l6 m
# H+ ~% w& L4 B- Eset-current-plot "Trends-of-global-reputation"

" l! }" q: D7 _: {, T* ^; {2 {! s% V+ O* s
set-plot-x-range 0 xmax
0 |. I6 ^( T9 D
) O5 N2 {4 Q  V& m1 h
set-plot-y-range 0.0 ymax

. A: q9 k4 `% \/ R3 [end& C2 o- G1 r2 y+ J7 f* @9 D: ?

  p8 }& o0 W- D( @to setup-plot3+ _: J' g6 g5 \" N

& v$ e2 C$ \# |set-current-plot "Trends-of-credibility"
! P! v' E/ d* k
( S, ^( Q) B! ?/ S
set-plot-x-range 0 xmax
7 _6 O" d- {% Z. Y+ m& g6 M5 z' l

$ m8 r, k, `' L1 A: e. `set-plot-y-range 0.0 ymax

" {5 \0 S9 F% m" p( Iend5 r; d: h6 O& K6 Q0 \  g4 g* C

3 Y  g8 C# r! |; a5 }4 Ato do-plots& c, B4 `! t+ Y, f
set-current-plot "Trends-of-Local-reputation"& d5 h0 @5 p# v) h- Z
set-current-plot-pen "Honest service"
1 y8 u1 r& ~' G/ n( \end
2 Z/ I! _& C8 [6 W$ T
9 J, m# Y+ `3 z3 x6 ]# b. f[ 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.. c5 o7 ?1 c4 E0 G% h2 n

" g9 H" ]1 k* D% t1 j/ L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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