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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:% J  i! E) U- K# g5 c
to do-business 9 S# D4 y/ u1 v3 F4 _
rt random 3604 A2 Q0 J$ }; n) i; C, T
fd 1- H' z+ f. `* f8 D  T8 o: x2 p$ I( g
ifelse(other turtles-here != nobody)[
1 e) i) \% i- d1 k! H9 Z   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.
- w6 {! P& b- ]2 p: x+ j7 @$ M   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / f) s' Z; q9 ^+ c8 r; V5 k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( `# c- G( d1 N6 c1 D' |5 A5 V
   set [trade-record-one-len] of self length [trade-record-one] of self
" @$ l5 P7 \4 K' q3 Z   set trade-record-current( list (timer) (random money-upper-limit))
# {  a/ r$ ], W/ h* ^' E" m7 v0 d9 o& y1 a; {2 L
问题的提示如下:
3 @6 b) I+ u' `, `* Z$ \
" Y$ c; i8 A0 D9 \( W0 q8 aerror while turtle 50 running OF in procedure DO-BUSINESS
) ]. p; [4 _9 }7 _/ J5 S& g  called by procedure GO
1 Q/ S& _4 v2 f1 P! vOF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 X. O4 p$ i) B5 B7 |  O
(halted running of go)
3 z+ X2 ^2 U* f' O, _0 m
+ d. L  X# b! V9 w2 g- E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~~* [$ q8 ?8 K+ A
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
3 }7 b1 w1 h5 \# h: f1 Pglobals[2 T9 S. v$ _3 o# y! `! s4 ]* M5 f
xmax" D. A4 P. U% K2 l" w' n, \+ i  a) M
ymax+ n$ ^( f9 u4 ]9 u! Q; ~! c
global-reputation-list
! G: f5 D# z) y6 y( O0 y7 T3 g! ?) U. Z8 D; l8 ~
;;
每一个turtle的全局声誉都存在此LIST
. X" \# Y& g. t+ o! C: ]9 \) Lcredibility-list0 ?' d0 p+ ^  {* n
;;
每一个turtle的评价可信度6 K" b4 M5 D" }6 m( }4 ]
honest-service8 t3 T- O2 }, ?( p
unhonest-service( z5 R! W9 B! Y5 P- _
oscillation& p- ^( c4 V- G, _7 g" ~: k2 B
rand-dynamic
* ?; W- _% u5 G]: r# @+ b& U+ e5 ^) q
+ r+ H) N' v& v! M% p$ s! U
turtles-own[
, P# D4 X/ `1 g8 J& gtrade-record-all
7 T8 j5 d. @* K/ z7 Z! u;;a list of lists,
trade-record-one组成
: C0 g( A' C! B. \  J+ U! Q9 r! T! a, P9 btrade-record-one! I# `7 B* g3 g& ]2 }" U- c2 g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录* }* t" `4 }& t- X3 k8 y) P" r3 j) a$ a

4 V- [3 m2 v/ 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]]& ^# J1 K2 ~+ Q2 [' P! T
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]
( x) K: L" z  U) x! u% [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' Y0 Q" J9 Q" q8 x
neighbor-total, i7 P: f# X0 M: L
;;
记录该turtle的邻居节点的数目
  ^# s( E3 Z% J" otrade-time
/ V  l. ^% X. v& q* D& I& g;;
当前发生交易的turtle的交易时间
, Y2 l4 }. P( kappraise-give; S( t9 d- N  v- F$ ~5 D3 W
;;
当前发生交易时给出的评价
" ]" z9 C% g8 b) jappraise-receive: m# u" n: T: S% q$ X+ c& o
;;
当前发生交易时收到的评价
; \" `3 d5 d! ?- s0 H3 P; ]& q+ L9 Happraise-time
$ j1 {4 j9 R3 O; H# e1 R/ K;;
当前发生交易时的评价时间
8 M) e) G* @$ Q7 U1 D( n. ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& h8 F3 D# W- L. z2 a
trade-times-total
$ @! a! F8 k- h- c5 p;;
与当前turtle的交易总次数/ @* e4 F& v3 @) X$ x+ T
trade-money-total
6 A& Q: r; S( X" J5 b5 i9 O;;
与当前turtle的交易总金额# M6 C) p$ g- w4 O- r4 a
local-reputation8 S$ [& \1 K, i; A2 u6 p
global-reputation
* h2 d$ ^. D; t) M# b, N3 ^$ Ecredibility! V; T" N& `1 F5 u( _2 A
;;
评价可信度,每次交易后都需要更新
; @: S1 Q' {7 ^8 k2 ccredibility-all
' |6 l' {+ j  f9 ~;;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* q8 }6 A6 P0 v

3 R# m1 B' y+ J  L& V. L;;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
6 R+ P0 s. j4 O- v4 d0 ncredibility-one2 N  C" M' j6 Q2 x: a( `8 @
;;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people4 h2 \% z% G4 L8 z/ @: G6 `7 {
global-proportion
! o2 F5 n7 m6 b1 y1 u. vcustomer/ j( f% z% t+ ?7 v' b3 e* m8 R
customer-no. k( v2 q7 y( {6 m8 }1 s5 H5 O
trust-ok
0 r. Y5 i9 K: D& C# `9 V, t2 itrade-record-one-len;;trade-record-one的长度
% K$ a! b4 E* [! V]( G! D1 r2 w" k. m* Q7 I

4 x* q( f8 f4 H% [( E;;setup procedure
3 A. _0 w# @& h* ]! h
$ m0 a! [8 a4 D" K) {to setup# D1 }! u9 \3 N8 N9 s) o

+ ?+ R9 ^% C  k5 P, ~" aca
( l9 y7 U9 m- f6 z
2 w1 T0 X4 J" u% v3 v
initialize-settings
* n5 b& B; u9 J5 l" k6 l
: y7 U/ r6 H* t( p9 n+ j
crt people [setup-turtles]
1 G) V! O; B& D0 J0 j& x! ]

. Z! s( w6 }+ k! {5 I) F# a8 Vreset-timer

& N- Z- _! V9 ]8 {$ d% W; f) a# c( Z+ T0 R: t
poll-class
. E( c/ Z1 m; P) s: q

" K- ]: S% y0 i0 K* O9 bsetup-plots
( _8 W* n) y9 v9 H& L9 }1 O
+ `. r. z/ V* A1 r* ]
do-plots

) B& Y, b5 g! [1 Fend
  X7 ]6 R" E/ W4 f- F+ P
" i% J$ n  `- u+ yto initialize-settings% v$ k3 L3 j7 z, I& ~  ]
  N; R2 Y- `& f
set global-reputation-list []
8 I) t& G. M) l* \- y$ x' q% b

# w, S) G9 ^3 X/ d; {- Kset credibility-list n-values people [0.5]

  c; x6 \, ]7 A  K
- V* w$ B7 Y0 Z! ?  rset honest-service 0
( _7 `! s; ^2 F- Z5 Z

! U% [7 V6 p" w1 @, cset unhonest-service 0
' C  t3 k4 e0 c, }# s+ t
4 V- l& b1 u6 Q+ T1 z
set oscillation 0

- Y. f/ d8 D+ G7 H+ P% T. H7 R0 A9 W! d
set rand-dynamic 0
/ W) d8 n6 ~3 g6 \; s3 q1 [6 N
end8 p: y0 j. I1 s9 }
3 v& G- O8 T5 w. K/ a: O; n( D
to setup-turtles 0 P  Z, H; ^/ s; Z
set shape "person"
3 @/ b* e3 b7 Isetxy random-xcor random-ycor# F0 b  r: N2 x! @% r6 K
set trade-record-one []% W9 b0 G3 B  @; x) f- D/ G8 s
$ }6 R5 p4 @' c& C; y5 ^2 L
set trade-record-all n-values people [(list (? + 1) 0 0)]
: R, ]1 n- z2 X- T
  D5 \7 P8 j- X3 n: W6 `$ C" o
set trade-record-current []* ~, ~/ _8 N) {, o: w( r/ e* ^
set credibility-receive []
1 l$ u6 j7 \" _set local-reputation 0.5
1 a# I( q( L! H) }. \set neighbor-total 0
+ Q" z( X% V; q" d* k' o3 iset trade-times-total 0
& _% X3 p8 Z: @' o" Aset trade-money-total 0
" I# V" a6 _; S; }: u7 T; @& Rset customer nobody
( x: N: b8 N5 B; e$ z! W5 e2 zset credibility-all n-values people [creat-credibility]
7 a% Y! A' @5 z4 rset credibility n-values people [-1]
1 y4 C% T2 S) w* U7 Zget-color
* V! e+ h8 E7 I

+ E% a2 s5 N) zend
6 P* S0 u$ f3 m+ {8 D" Z. V* ]$ v9 P" |* [; ?# U0 y0 X" \% d7 P1 U
to-report creat-credibility0 W/ o" t8 n% A9 S
report n-values people [0.5]
( J: j3 S/ A9 k& hend5 m9 \9 e; b% A4 x  [% f

( N$ u7 \6 K+ f( a! a9 _2 zto setup-plots
5 R$ @2 D, w# i# s  N% j" I3 {) X' i. d5 x- A
set xmax 30

+ s8 }; p. U2 e! E5 H
/ p" y! o; C2 h: w( D* rset ymax 1.0
( y) E( ?. M+ l* J
* E9 p( x& K/ O5 q
clear-all-plots
/ ?4 f0 B* r" N( m* B

9 d) N% \# n% bsetup-plot1

4 ]5 Z" [) Z3 Z" }* C7 {/ m: j, x* v  |* C
setup-plot2

$ L/ ?: _4 W) y9 @0 m8 Z, {, O4 r% d1 v1 n  }3 v
setup-plot3
* u, ?2 y" D; J; z+ d& n. n
end
( a$ j) j8 \2 I) ~( L3 n/ q1 G" N9 p# m9 Z" x
;;run time procedures
+ X; h: m) c5 g: c8 }' b
' H, l3 B1 B7 V. [7 b9 Xto go
2 s" s3 t( l' l# N: X* B: u5 ^( E$ _8 r- J& E) S$ I
ask turtles [do-business]

) P4 e& O/ w, l* X) jend
+ g: _3 S0 h9 n
/ z( a9 j( u- j, @7 Xto do-business
$ Y; u& J3 D9 o( J3 \" P

! u. W+ E" l" d* Z6 u/ i/ k
# _+ D9 B7 q6 P5 X2 @' u% _rt random 360

% |; m3 O/ j7 b7 L7 d- G' Q, [- t# `$ h: x7 G6 ?, ?9 F. U
fd 1
- `5 `8 A# O- J5 V; B, ?/ I

- c% S$ O6 z" O( e) [2 Lifelse(other turtles-here != nobody)[
# S0 B# Q/ I* K0 h+ ^! x6 L

" m2 z; g5 P& V/ o" {: nset customer one-of other turtles-here
! y7 a& Q% \* v
% w7 D- |2 l! t
;; set [customer] of customer myself

# ~0 l+ a4 N# {/ s2 e. d3 s
+ S& c" E3 C; H/ T+ [set [trade-record-one] of self item (([who] of customer) - 1)3 ^3 P8 P3 |# D$ |3 {( p
[trade-record-all]of self
: |1 @: t" H- _7 G' @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; O6 L9 H3 ~  p

) S. m' M- i0 zset [trade-record-one] of customer item (([who] of self) - 1)
! C' m( }( p/ Z; M/ i2 J& R4 Z[trade-record-all]of customer

! Z1 f  k8 [/ k8 i2 V
, d# K. f* Y& x  V1 u0 W6 l& l) Jset [trade-record-one-len] of self length [trade-record-one] of self

, `! x8 [( d# R' \2 W% f- E) n2 r
6 o! A( O, M# ~1 u1 b' jset trade-record-current( list (timer) (random money-upper-limit))
. ?; r" |: Y4 w, M) |+ [) u
0 w8 t; L* e  z/ {; E) `
ask self [do-trust]
( r' n  N/ F7 o;;
先求ij的信任度3 B) `8 w+ e1 ]
5 p/ j7 U8 b0 u9 U: G0 H: \3 m
if ([trust-ok] of self)
# x& L- k6 D' L  v+ H1 q3 ^;;
根据ij的信任度来决定是否与j进行交易[/ d2 Q. [% d: H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 z' B) O% N# |6 D! V/ u% N

! v0 A: ?: A1 B& _+ b' Q+ H[

! G  L1 K8 R8 A6 Y" c% i3 ~( U5 f. `& y! S
do-trade

8 `- L, K3 w# z( ?: O
$ `% a; M: x# D6 Cupdate-credibility-ijl

2 s8 e9 n9 m0 t" d( K! ~7 {7 d6 |, Q" o  m: `
update-credibility-list
' v; u7 U* x; P. r8 o3 ~

4 q8 C4 t* ~6 A" x. I2 c0 F9 b% r  r
update-global-reputation-list

- g2 g% C0 ?) S+ C0 |0 V8 T) x
. @' }3 l' `& p. Hpoll-class
0 C8 T' r* H2 h, }: r( v
7 E) S3 t- {% V) x$ k$ ~2 ]
get-color

% j3 h3 r. _- G3 [) l" B; s' J" [; u3 {
]]. q& d: {7 C4 `4 W+ }+ ]  N

8 A* j7 V) F7 o4 D9 s;;
如果所得的信任度满足条件,则进行交易
7 \% E" {' i& o& ~/ m) N) ]2 d3 u9 u2 m
[
9 a* K8 n8 o- D/ W! ?

# J3 F; j! Z; m5 g9 art random 360

1 d+ z5 n4 ], l* ~& u4 o% h- X- l; V% }" F. v" _8 }
fd 1
$ `) H, W* }  S& s9 @
4 J; B* W6 i) K4 c+ v( D
]

2 F0 T( S% e5 T* v1 A8 @# d& g& C% x, L, J( I
end
, q: Q) c& I+ Y

0 I3 s5 T: P  wto do-trust
7 y0 Z$ K* H' ^# aset trust-ok False
! `" @# O: b& W: U/ c8 e
/ m* }1 \* K# D. ^

0 ?) O! R- u& G: K  Klet max-trade-times 0
& e9 ]# S  Q3 i+ r4 ^. I4 c" |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 o) q5 x  T; }. d- Glet max-trade-money 0
9 i0 v, e! K5 b3 n9 ]! Z, [: @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' ~" `. u$ d- `4 w5 w; C9 f% t4 c2 B2 zlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), Z0 Q( @) T0 ~% r5 M
+ h5 m! a+ p4 o5 v
8 j- @/ ]; T) R% v' r" }4 Q
get-global-proportion% a" s4 d. |8 W$ x" E9 m
let trust-value9 E" U% Q1 h. m3 `3 H+ l
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)
2 s* Z8 u6 y$ c' M! n" e
if(trust-value > trade-trust-value)
& `4 ^! T" H  S5 M" c[set trust-ok true]+ ]+ `! Y) {6 v' q+ b1 R/ l$ L
end
1 i( o  ^1 ]9 w- x  x# \0 p' I" G# k) s; a- Z5 E  L
to get-global-proportion
# `+ p7 g, f; n, o+ T, qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 y& z. A6 P' T) i
[set global-proportion 0]
2 F* y/ i7 _& `4 A1 q[let i 0) j! [+ e( z( q6 q7 {+ N3 A9 y
let sum-money 0  m7 D9 v* f6 `
while[ i < people]
/ N: B* E4 i, `' ~5 R; q9 ?/ ?/ z[0 D+ Y9 W; W; M- m0 n( z
if( length (item i( L) a7 @* I7 S3 T! j
[trade-record-all] of customer) > 3 )

! `2 I! `6 j! t' b& T) n, M1 z5 i  m) g[
+ Z# V% ~" u' Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 @5 N8 Z$ ]; P
]3 F, Z2 y; S$ A+ ]0 S( U
]/ q- {" A( a/ v4 D, @) `
let j 0
# y1 q* ~' E. H7 o; f( Hlet note 0
3 @0 ]. g; F/ Q' P# d; S  Nwhile[ j < people]7 R" O2 q/ ^! E
[
' W9 v% @' O5 }( K: V( O! Sif( length (item i$ I3 i' p$ r  P" Y
[trade-record-all] of customer) > 3 )

' l+ G( b* g: S3 _) X  P[
, Z4 A# `+ ~1 Y/ U2 ?ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 |, f1 _1 v' O* w; f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# r! a4 h, g5 b7 v[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 w0 k; d$ u2 \! }9 Z  k' s9 A; k]
9 t# S+ e7 p9 Q& F: |  O4 S8 h]9 s  S  k- X: d  P  k7 n
set global-proportion note7 d# X1 ^$ r+ b' ^0 J; X
]$ `4 B: M1 \( S2 s& W8 K: @* i, y
end
+ ~; T2 g" e/ P* C9 C& U2 v, C& f/ r4 @( E3 Z
to do-trade
( ^+ m! t. F+ H$ k) A5 |# Y2 H;;
这个过程实际上是给双方作出评价的过程
2 |8 o/ g4 J" S- J6 g( x' R, |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 w0 i: Q4 @1 e& ^" O7 D$ ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. e: F  m+ H. L
set trade-record-current lput(timer) trade-record-current2 x7 c! v7 J$ j1 _5 q
;;
评价时间& v3 P! {5 \6 o2 W
ask myself [, j" g! O+ n- }7 H5 o
update-local-reputation
+ R; P% y8 f7 Jset trade-record-current lput([local-reputation] of myself) trade-record-current
# I( Z  I* {5 I' v% P8 ]]0 j# ?% R& F5 V8 i) ^
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 s2 q0 p: p) h( M3 K. @
;;
将此次交易的记录加入到trade-record-one
, k% s; p& I3 D6 `/ j9 O2 \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); T; \2 S% j2 l2 C* ?
let note (item 2 trade-record-current )' M3 d% {1 ]. [3 t1 y, H5 C) O
set trade-record-current# O) J) g( `& b' C8 F5 p( _+ d
(replace-item 2 trade-record-current (item 3 trade-record-current))

4 K, R' p7 t% Y! Q2 J1 c! ^set trade-record-current, {" f3 V- F8 \1 \/ }+ p* B  F: j9 R
(replace-item 3 trade-record-current note)
. R% J2 K' ^$ q/ H1 h: @) c* N% ]: R  L- c! ~

5 @+ f# h* B6 L, {ask customer [
' U6 z/ m! r  |0 jupdate-local-reputation: M9 A! _; d# |$ I
set trade-record-current$ u5 P6 i( ]0 X- M+ I, _5 L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

1 s$ ?) f1 V! q2 s3 B& Q]
/ f% g5 `( {( ]  Y! P) ?* n9 R  R" G8 `/ u! V' J, w8 y2 w: D: M1 F* L
+ W8 V6 N" a$ S; ?/ x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
( [( U. M- B9 Q8 W- Z7 H' f& Z
' k2 P( X" H. J, I9 M* \3 R
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 N. u1 L9 m; X+ [. i( B( {
;;
将此次交易的记录加入到customertrade-record-all5 K$ x4 z. I# b4 d, `/ E% p4 Y# B( M
end/ Y! a/ ]! e! g$ o+ ~8 N3 P; ^+ G

1 H" H# @4 f* kto update-local-reputation
- a1 ^! W* @3 G  v, @4 Xset [trade-record-one-len] of myself length [trade-record-one] of myself
/ }% U* G: i6 Q5 i- E# h
: x( T! b6 S! L! B5 r+ D' P1 z1 ?1 \9 J1 {
;;if [trade-record-one-len] of myself > 3
) m- B0 s8 I' V: w  f; ~, E3 R; a) i9 I# u
update-neighbor-total
5 @. L6 i  J& ]& K9 N;;
更新邻居节点的数目,在此进行' U4 y) r2 Q( _. Q
let i 3
. c, O4 q- z3 Y: h" ^) V8 qlet sum-time 0/ S/ e% [, M& `6 J) F! t  d
while[i < [trade-record-one-len] of myself]: u5 ]2 t! v* v. u$ ?( Q
[) r$ k& t, R: l: I% @" l% E; F; N
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 J$ M) f  L) T+ [1 x* Kset i
5 ~% |1 R5 x" A' g: R1 o* A4 N3 n( i + 1)
( b& E/ K$ x' T. r. Q+ q' [
]+ y2 L% f7 |" Z" r* F
let j 3% e" J/ F: H: O* X6 [* m2 l5 @
let sum-money 0* j+ ]6 I* W( l; Q: r
while[j < [trade-record-one-len] of myself]/ `! s; s6 ?; ^
[
! ^7 u$ v: J8 M. p1 }% d) h/ Qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time). M% d/ _$ r  f! @
set j
! R4 W/ q6 x1 O" o/ Z! n( j + 1)
0 e, X% K) a9 f2 D, t5 F  e
]
. o# V" _; u5 q+ }& Zlet k 3* Y) K- s  |2 c2 H8 j
let power 0
( E5 E3 H, Y, I0 \let local 0& G( w2 _3 d/ w7 ^
while [k <[trade-record-one-len] of myself]3 M% W' i$ |& x  ?# H
[
. r, _- I8 P9 i% k/ _5 Oset 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)
! h1 ~5 |6 i. x4 uset k (k + 1)* F, f7 Q1 j1 H$ t3 ]7 E
]
' K# q+ \9 ~. ?" xset [local-reputation] of myself (local)
& j  k% r7 e2 g) I. c6 n7 J1 W& uend3 Z& q  L  a6 i% X

. {7 B" E1 Z# }0 z8 i% cto update-neighbor-total  Y# I0 Z* i# `$ E0 v7 E1 A
! n! @0 X* W- e( O: q! P6 @
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 |' a7 v/ ^: I' ~2 c2 t/ x2 `  j$ F! T4 y. v

0 f9 K, b% E) n, C/ Tend
; m7 U( a3 B6 k$ f) h
+ L7 T% y# {% f" z, eto update-credibility-ijl " h# b6 T- R; D9 q7 s( d, d

3 h& M/ B7 e8 F1 ]& U; h;;
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。
" Z6 v& t- h# Clet l 0' e" A, @5 Z4 [- y! q; B/ L
while[ l < people ]! I' b( b6 ]( S& W# p
;;
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; N; ^* L6 z0 h% {! i
[! C9 p/ U: s$ h( z, ~
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* r9 q. h( f3 K) e, s. jif (trade-record-one-j-l-len > 3)' u- X8 |+ s6 Q
[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$ ]3 F3 Z) Y) i) x0 Z
let i 3
( O# `, H% c4 k( c0 qlet sum-time 0
+ ]/ o+ |9 w0 E" v- w7 Rwhile[i < trade-record-one-len]/ r0 d! Z4 q& t* _9 c# c: V6 M
[
3 _2 g8 T' \& d; O' Kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 h2 T. S: F2 ]5 Q8 G& o
set i
5 y2 b: A! w" P+ X( i + 1)

8 J/ F8 i! ^2 j# H# h) ?]( U, U8 @( `# T( U: [5 _
let credibility-i-j-l 0- B/ [1 V9 r4 w) R
;;i
评价(jjl的评价)
4 K2 `" d0 f# t) _7 R6 u6 j3 Hlet j 3
( x2 L2 U. o) N$ ?3 b; h0 llet k 4
. X; j8 k7 O2 P+ K* K1 \6 `$ Qwhile[j < trade-record-one-len]
( d4 ^* D$ U2 t& U5 a[& F8 u' b4 y4 m- j& G" G3 y; r
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉9 T0 d- r& L6 t* ~5 A( a9 R9 w
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)' X7 ], Y2 D% c+ \& ]* \; [
set j* }# o& w2 J' m4 j6 E! e1 @" U
( j + 1)
' T- A! l) d! n- l* r) f  `
]' @- j$ N7 P. T. z8 I. n' Z4 E
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))% ]1 |7 T3 @8 o

# C& @+ \9 }% K
& _( Q, I8 X5 c2 Y2 ]  S' t1 [
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# S& W- N+ u5 m; D- a
;;
及时更新il的评价质量的评价
& \- H) P- N$ d5 Z+ Rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' {; r8 M2 \/ T# I/ [) Xset l (l + 1)
/ G2 f7 f1 z/ o9 Z# Y]
& Q7 }$ j( E& @) {! cend
$ Y2 b8 p8 j7 o% o6 n7 o
3 d) O5 A5 g2 b" `$ v1 [, D  T( Vto update-credibility-list+ v5 Y) H  N' f
let i 0% Z6 Q5 U# q, q. _
while[i < people]
& U. u6 ]) h( N3 x0 r[
0 i4 y" G$ ^) O% L- w5 Olet j 07 g8 h6 X; p* ?. S; V# C
let note 00 r0 J: Y( w2 `& T* p
let k 02 r  Z/ ]* K" `- U$ ~- Y
;;
计作出过评价的邻居节点的数目: n2 D0 ?0 ~9 `' a
while[j < people]/ v6 e# ?, H# \3 k' m& |
[0 `7 u5 K3 j* z( g
if (item j( [credibility] of turtle (i + 1)) != -1)
/ p/ c! S; _" H/ ]0 j;;
判断是否给本turtle的评价质量做出过评价的节点
5 L1 Q3 v+ q- U5 {- i" r* N2 o[set note (note + item j ([credibility]of turtle (i + 1)))
+ b$ t9 D% i+ P! G) H' T) \) h;;*(exp (-(people - 2)))/(people - 2))]

' u- B4 n0 W4 jset k (k + 1). }  @: V- }2 L5 l, d6 N; d, v% a. X
]
  T3 l' y; E8 g+ p' ~set j (j + 1)
- ]: K) A! e5 s/ i- h]
, q/ X/ i! C" X, a1 Cset note (note *(exp (- (1 / k)))/ k)
7 J% A/ w) ]3 [3 O5 Z+ vset credibility-list (replace-item i credibility-list note)
6 C5 w. }; ?% \  Q* Jset i (i + 1)
) H1 a' ?6 b. L3 O, z( e& D]1 Q7 q) d: k7 f' b8 v  d
end
1 K* j3 f! ^1 e" s1 w) ^  }! m; P. V$ r  N- k" B6 @1 f
to update-global-reputation-list
. d! o' W' f! klet j 0! O2 D/ ~9 g& C8 j
while[j < people]
0 e! M8 u/ Q- y' f[
( d6 P  P* k" ^( o9 \  J  b: Tlet new 0
  u* Z( g) U# b0 L- r7 q, l/ A  u) o;;
暂存新的一个全局声誉
: |& T; M# V( c/ A( r! Alet i 0
9 x$ C0 L0 q" J) O8 U2 A, G9 [9 clet sum-money 0
& q6 {' N! b: f+ q5 Dlet credibility-money 0. ^* `1 l6 K7 ~# m9 a5 o
while [i < people]
2 f% v2 r" _6 B, s2 \" s[
* [+ _( N( l1 x  B( o0 lset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* S% V2 B. {# Qset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
4 V9 k' _* @/ b- E. |5 w1 W, sset i (i + 1)
. H4 p5 |4 ?% Y# a9 L0 u4 R]+ O+ Q+ ^. {$ R) D% z& O
let k 04 \0 W. b/ m7 [8 E4 n# S
let new1 0. Q( x8 B2 g) U; D% L8 i$ z, K
while [k < people]4 C. t: `: C6 c1 x. I# M. r- m5 m) b
[
! _2 I( k( O  G$ |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)' V& U% |8 D5 ~* G( D8 o0 {
set k (k + 1)
+ F# R8 j$ X% X" o]/ Q9 O; ]- y- j8 X* c' C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : g: ]; a/ a- _- m+ D- l$ v$ \
set global-reputation-list (replace-item j global-reputation-list new)
9 K7 X% ?  S0 m' x% d% bset j (j + 1)  c; L4 G3 i+ k" q4 M
]
  _  ^, j, O) w1 h8 Nend, u4 i) \6 c4 [3 @9 n; B
8 `! q6 t  q' D
! E. I# I1 s# ~. ~

' ?) w. c8 q/ z+ N! ~to get-color
( {* L5 c  Q+ d/ c
/ s' Z: R, x# p" [3 _+ `set color blue

. u& g, Z7 n- L$ y  O4 J+ \end2 Z* t* V) U4 f) x( V* ?6 I

" I( M  t- `! R( e( n2 B/ bto poll-class& L( X& ^/ v8 Z0 w  U
end
, Z' _0 K: B3 N- e
/ V$ v" L: X; a8 W3 |8 e3 Nto setup-plot14 u- w! k0 N& u' I7 Z( j
0 S' Z4 R& L9 A7 P
set-current-plot "Trends-of-Local-reputation"

) \# e, U5 N4 \
7 s" u9 z" G/ q/ \$ Aset-plot-x-range 0 xmax
5 ~( {, R. q4 Y; G
9 V, \, @; I1 j4 |( U8 c
set-plot-y-range 0.0 ymax

2 q/ n' x' p4 G) a8 uend
$ E' \3 ^, e; U
* Z! Q1 P4 `$ Sto setup-plot2
) W' s: f9 [  C' w1 O/ j. C* ^+ z
! O% s/ L; Y9 c2 `1 Hset-current-plot "Trends-of-global-reputation"

% V3 S) _$ G' A* |8 I6 v! x
& T  K+ D% L3 Sset-plot-x-range 0 xmax

! `+ O1 s5 }1 F. @- ^( U
7 A- h5 J" o) b* k, k: E/ t4 ]- ^4 }set-plot-y-range 0.0 ymax
; W. y* q. S3 C! q& {2 [/ ]+ m
end
8 j2 n9 }7 [% y, @
# q3 d1 ^8 {1 T* v+ Q- s* g) sto setup-plot3
7 p# s2 \2 d1 X/ {
; O" e# ?1 C# q3 j: _+ g3 dset-current-plot "Trends-of-credibility"
" l; X: i$ w) C! W- A+ U) M
" f( D0 P' Y/ T0 x2 K/ Z, n) T
set-plot-x-range 0 xmax
  g8 _  ~) g/ v9 \6 ], K% U

+ G$ I4 y- ~6 q6 e9 u& Y: O8 Kset-plot-y-range 0.0 ymax

" d: ?$ E# T6 z3 \8 J5 r" Lend
1 Z& l( _4 ~+ W# G. {2 Q# \$ O4 |  u1 \3 W# A4 v1 L
to do-plots0 p1 \  f$ v4 q" _  L
set-current-plot "Trends-of-Local-reputation". h0 T  H3 {' v
set-current-plot-pen "Honest service"
* I% U4 x5 P# V: |9 Cend
1 Y; d5 @( w2 Q6 W/ I$ u2 K5 Y& Q% b* @+ H
[ 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.' I+ v5 L) Y0 b5 c

! `' p0 q+ K5 K0 ]. J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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