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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:! R$ b. V% e# o5 ]8 J3 A) A, e7 K
to do-business
: ?. t6 |/ r6 {0 h0 } rt random 3603 \# O* \# l- k& p! J
fd 1
+ O9 n" E" p3 J+ `4 k: R8 l ifelse(other turtles-here != nobody)[4 G- C* p, b' l5 {3 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.# I, m9 Q  h1 `, X* i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! k; |5 M( E# m, v6 F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- S7 R' \! z+ T% M2 k9 l, R
   set [trade-record-one-len] of self length [trade-record-one] of self
$ L; t& ~8 l" X% \3 F9 |0 X   set trade-record-current( list (timer) (random money-upper-limit))
* l- V/ F) e2 S' k, q. _0 ]/ ~7 J2 P! g7 B. V
问题的提示如下:
0 W+ {& O+ Y+ S; B
* o0 @  z& {/ {' K  _+ Merror while turtle 50 running OF in procedure DO-BUSINESS" }# M( i- t; R8 Y3 P
  called by procedure GO
6 l( D. H! Z9 e! T/ N% P5 VOF expected input to be a turtle agentset or turtle but got NOBODY instead.
0 \* J, c0 O0 j. X1 ?7 z9 ^
(halted running of go)& ~  z/ B% F$ Z4 }& Z
  `5 y  {- ^( v9 _* J
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~~
7 `$ L! x" D- p& Y, f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; d: a0 @" {9 ^2 e; n4 Q
globals[
% d8 u6 o3 o4 yxmax
# ~  F1 \6 ], ]/ @2 {3 `1 Gymax
: q8 k: v/ [5 L8 I7 f0 c: L6 fglobal-reputation-list; {- s% `' D, `% n1 A& j( N
* S! W: A0 e  Z% `
;;
每一个turtle的全局声誉都存在此LIST1 q! ]- @* t* _# [3 E0 f. q) |, P
credibility-list
+ z& |+ q8 H9 B6 O- r;;
每一个turtle的评价可信度
# ~$ U; N5 [( C. j. D7 Uhonest-service: a! e# M+ K6 |. G' @( R. [" ^
unhonest-service
3 l! u! [+ _- i9 Y5 woscillation
6 Y5 M4 }1 {+ J, [rand-dynamic1 S* V0 c! W: P! d- x
]
; S& b$ B. E( w4 D
; ~+ d3 F" Y6 V9 E7 D8 ]% tturtles-own[% @1 z+ j% P2 @* O5 E; }* d' ]1 s
trade-record-all
4 `9 |# b. d/ P$ z9 O8 s& T9 D3 V5 T;;a list of lists,
trade-record-one组成: J$ p0 a, ]) c8 q& z8 F' ^
trade-record-one
2 b' x) V7 Y! B- C/ P9 z4 y6 };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& G" b& E3 c+ q* M9 |+ b( d* U2 n4 x
;;[
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]]
8 w3 b3 r8 j1 itrade-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]6 C! X1 D/ v) p0 w* j* J  f: C
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# [6 p. L, x1 G8 X  p
neighbor-total3 ^( L5 |/ ?5 Z8 M+ G* [
;;
记录该turtle的邻居节点的数目
( k7 K' b) m' w' etrade-time: }- B# {2 e+ h8 y. B) r
;;
当前发生交易的turtle的交易时间9 [: V" ?$ M0 `: e1 j1 ]' \6 r
appraise-give0 K4 l# G4 s5 a& `$ }
;;
当前发生交易时给出的评价4 R8 n$ {7 }) p$ p5 k6 n
appraise-receive5 y2 }* m% _$ c4 A% c
;;
当前发生交易时收到的评价
( O2 L1 j% N, O9 q6 Kappraise-time
" O3 Q3 H5 Y/ z- }8 r6 b( m;;
当前发生交易时的评价时间) H7 B: k% r) r) S
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' ]  ^/ G/ T& F/ }$ c: Ftrade-times-total
7 ^8 v8 Z( A9 J3 b( e' Q;;
与当前turtle的交易总次数8 x( K- }: G; Q2 o) C
trade-money-total
! C3 ?. c9 n6 t- H0 L. y& I3 o;;
与当前turtle的交易总金额# b* u9 |1 X* k  L) c3 t
local-reputation
0 G( [8 H. q# `0 l# lglobal-reputation  q0 S3 T' y! l( S! ~5 R
credibility. F' w, _; N. Z% [5 `
;;
评价可信度,每次交易后都需要更新# H" Y" o" J" e2 w' O
credibility-all( F6 N% b; U5 u: |
;;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9 X6 e) S  t: H
/ c( J9 [6 R8 G0 `6 I. h+ u  G1 t; k
;;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
5 L/ f* v  r: E3 L2 f3 K; bcredibility-one: Q+ w4 L( X3 l$ q. n6 O) I% n1 f" q! _
;;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# O) Z9 w! y% N" t/ \9 d  D
global-proportion
3 K2 r6 w$ M5 `. l, [customer' E+ B$ z. `5 |1 J( ]
customer-no# o$ ^' Q- W6 K6 U5 v- W4 r
trust-ok
, ^5 n* o1 b3 c* |2 x! Y) Btrade-record-one-len;;trade-record-one的长度
9 a- v# Y# w) p8 x, w]8 z! e  |  G) F
0 M8 H( y9 y) s# I) e  v
;;setup procedure; b3 y, R/ x3 s; W
2 H& P7 e% \6 j4 j
to setup4 s' |& O: e, @
7 _& y7 U  m' z
ca

& Q5 q% G8 `5 D+ j  V0 D
' O$ x- k) D% @* i  }& t( E5 ?" zinitialize-settings
& [& E5 y- {4 m! d) [/ C/ V# j+ j
1 }1 m1 x0 z5 V: H4 i
crt people [setup-turtles]

! W7 c% p4 ?4 T9 G2 u# }' w4 K/ b7 }8 B: v/ U9 X8 [. a) {1 F2 j2 v
reset-timer

: s. |3 Z1 k* r# \3 A) w$ C% M* z+ z, O2 y
poll-class

  a% j8 c* d3 j$ Y& g- s0 `6 B% O$ }" M! O* k$ M/ K) w5 ?" _
setup-plots
: _' ?, [! \3 S) I/ o$ w
+ o7 A& x7 p- h$ `, h; I- N
do-plots
4 @- o  S/ M* J. E7 R
end
9 C$ g8 Z; A" [7 F' J! }( }0 U/ ^5 b8 N
to initialize-settings, O* S1 `/ V+ I& I( R+ O  o8 E
  T1 e5 G: D4 V
set global-reputation-list []
5 V9 E" `. ?/ t0 g9 g$ l

1 {/ p$ G4 ^: A' x' Qset credibility-list n-values people [0.5]

# S0 q7 O% j* k0 m/ [: h1 }6 j! @# l# u- F% v5 [% W
set honest-service 0

7 |- z9 O/ M0 @0 T8 V+ f# L4 [! |* B) V" m1 A
set unhonest-service 0

7 u; I/ N$ m% r' A
$ k. n( \1 v; ^% S4 l) |  cset oscillation 0

+ W4 b/ Y% M/ m
& M. n9 @. B6 ~# j/ v& o2 cset rand-dynamic 0

$ \  M6 P( b3 x% W, ], ?  E: {. nend" D. p2 K0 o( u6 r" B/ u- a! W+ f
- P! C! S7 e+ _9 a8 T
to setup-turtles
5 i+ O+ ~' p$ c) E5 Z- P: w# dset shape "person"# e( a$ L. |6 ?# _; k1 O
setxy random-xcor random-ycor
* q3 m4 h6 @+ Y, A6 V' ]set trade-record-one []
8 \" n6 P" u  x: ]( g9 {8 I" C
4 K3 H& i' I) x' M/ u* C5 _
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 x- u9 W" D) ~( F

' Q9 A) F& B6 ~7 Y2 h  F) \set trade-record-current []
% G7 E/ l( D9 r1 X$ K" x- \4 T( nset credibility-receive []
3 T3 e" K* Q. jset local-reputation 0.5
0 Q6 _/ w: w3 H5 d9 Xset neighbor-total 0" H' p+ ]& [4 z9 R" V+ B
set trade-times-total 0
6 r% x6 X" y& _; h: ?/ y+ o9 Q. Pset trade-money-total 0
5 O9 E; t9 L/ V+ d2 jset customer nobody
! I8 M: T1 |/ F& ~set credibility-all n-values people [creat-credibility]
, {: t% j5 q* z; [2 s/ pset credibility n-values people [-1]
9 v, T/ Q& g/ L6 p3 u+ u7 Q! Cget-color, S" O9 e, X1 H7 S- w
6 S. z4 x/ W; v: O
end6 t% C: {0 X5 `/ Q6 H' s

3 F: S8 g: g; O, s* x6 c* l) w4 s  rto-report creat-credibility
( ^2 v+ J& X7 @: s" ~report n-values people [0.5]% {+ V* O6 l" ?& ]' I. T% J
end
5 X' n/ F4 b( y; f, h5 o8 |& ?1 S% W. U; f! ~
to setup-plots! s  t  a: r# p" e
2 b* Y$ d: w/ I9 p
set xmax 30

# i- [2 t3 {2 W2 n3 R" L) k3 [  @- ]* a3 e
set ymax 1.0
6 O# I- y" P5 M  F- x" i9 {

5 |3 F* k& u& kclear-all-plots

4 N4 b' O6 c3 T: [# g3 q3 L
; v8 a' }/ ]! v: esetup-plot1

6 x7 D0 r6 s' T9 S) _; J# n4 T' s
setup-plot2

: j* m3 u' m( n+ \% r2 i7 @" \  x5 J9 s
setup-plot3
0 j4 E0 G) O2 z" P; @" i" Q3 I: R
end# o3 w2 ^, G9 ^2 T, v; q* t7 n

# M: ?6 y1 @% n7 L;;run time procedures7 d5 r/ K. z* G/ Z
9 S' i& j; {+ e. D$ j  v! }6 ~; t! q
to go4 Z" ^3 H9 \/ i2 Z5 l- d

5 ~$ E( k5 ]: F3 u- u) L9 Mask turtles [do-business]

+ X0 G0 I# c& W( l  Vend: e+ _- H: D- p

5 A" z% @1 I$ l* n# ~. x" P5 Pto do-business
; A. x: V% j, A* X+ u: {
2 b' Q. H) R  E  W" F% X/ _
% S" W2 l* f$ s( H0 G
rt random 360

! m2 }3 C) b# d7 Q2 v: z+ z% V9 E/ ]
fd 1

8 F4 q' c! h1 Z+ o- `. L' K* e+ A+ d7 W! d! `7 h: _
ifelse(other turtles-here != nobody)[
: z0 f3 ^% s9 ?$ B
: _* A: z9 J" A3 M
set customer one-of other turtles-here

# T4 d& q% s+ r3 g
8 Y" e0 a0 j9 ~; G;; set [customer] of customer myself

9 {9 n: t: y1 ~, u( {. M
$ a# x. Y" ^! l7 eset [trade-record-one] of self item (([who] of customer) - 1)% t# \& y* Q4 F9 Z6 L9 q
[trade-record-all]of self
& v. Z/ D/ N! [2 @; |% q;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" z% s4 B- ^# |7 f1 @% z8 G7 W% N
% G7 S( J! A8 A3 F+ U4 P5 K# k8 j# N; {  |
set [trade-record-one] of customer item (([who] of self) - 1)
0 L: t; R7 V, [- n0 W8 T+ p[trade-record-all]of customer
: @8 a  }. M0 E0 T$ `
+ H. ]7 n. ?+ k
set [trade-record-one-len] of self length [trade-record-one] of self

! R* L5 r& _$ D: w5 Y0 W0 ^) G% h% X  [9 |, M& |2 D1 `+ K
set trade-record-current( list (timer) (random money-upper-limit))

$ r" P4 R6 z4 ]+ O/ j6 o  J: H2 H2 m  C% z  Z
ask self [do-trust]. I1 P& Y# E% `4 e" l
;;
先求ij的信任度
+ [. `- t8 T7 d6 A9 p* B: }" Z) ?& F7 p0 [) R% y' k
if ([trust-ok] of self)
& Q1 W, U1 g+ v! _: r: x+ P;;
根据ij的信任度来决定是否与j进行交易[
. M5 b. O  O0 _ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 ]! ~) j  s/ J  i
/ ~& I% P6 r( e# e% A* p# A
[

: m2 G' }3 `  ^% \  O9 u
1 w; V8 `/ N, R. {$ b) P4 \! Zdo-trade

/ V% x1 x  J, `9 e. h8 I5 S0 x
4 J* c( f$ ?! Cupdate-credibility-ijl
! E* h/ I6 t2 N
# i2 O" N# x6 E0 X) x. P
update-credibility-list' k6 m/ k( @, ]# T7 X* N

& B9 D8 ~6 l- v4 H% y8 f% S7 ^) x6 a2 \  D
update-global-reputation-list
0 r% W4 R! {4 A
" w0 B0 v5 A8 c3 ~9 O
poll-class
$ [5 g* {* A9 p$ Y' H* d' ?9 |
2 x6 f  Y6 @* a+ t
get-color
$ L8 i6 |3 ~+ W  g$ @% j. h2 K1 A$ a

9 D; e) P2 R/ j1 F0 h  Q" E' v]]; k6 K2 |( k* C, e1 e( P
8 l9 Y5 P) [8 ?% V, m0 s  _$ v
;;
如果所得的信任度满足条件,则进行交易' W5 ~5 H0 k0 L3 J
! M8 y) O" p/ c" Z2 }: {. c! G
[
4 B# P9 O. |" Q/ }8 G4 ~. Z3 q
$ Y  W3 ?% `& Y( V2 Y0 M
rt random 360
% |+ K) e! s7 k# D/ f% ?2 N# v
3 ?. y* R; }+ |  H
fd 1

2 @$ i7 X+ x/ M# Y8 C5 D+ B* C  Y$ s# P' z+ Z) i7 t1 A1 E3 V
]

4 n6 z. Y) p" R6 f' o; n8 w
* G) V* A* t* W6 c+ w4 _4 M% f- Nend
4 f  r4 F5 \+ I9 o! @/ L
6 s* U+ [$ y3 A
to do-trust : F- f8 M5 l3 J; e
set trust-ok False
! e4 U4 R; t6 o  R- ~# y% v) ]/ e2 ]9 x; P

1 Y; c3 P# \/ i6 A1 Y: x: Xlet max-trade-times 0" U0 d% H& N+ D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! I. k, Q" p, e* H+ X0 d0 i
let max-trade-money 0
9 \, R( H% M5 Xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" [" S* V8 _8 @2 h+ }: H
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))& b6 L/ H* M$ i0 O
7 x0 @$ i9 s/ X; e: O
+ e% c/ k& c5 x- Y
get-global-proportion
5 r3 @0 q3 i3 d5 ^2 _let trust-value
- k& H( Q0 n' |1 U% @& H. B, dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
$ D; [9 h, u! k  N
if(trust-value > trade-trust-value)
1 {' p7 |3 B* ~% [" e$ l9 B[set trust-ok true]
. k* T7 b2 u0 T* zend
1 e8 E5 @- U5 r- f% l
! b. C& J+ }) h& vto get-global-proportion0 c- q" F$ \/ e9 ?. _0 O% d' p
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ D% ~9 ~$ s3 C' J, d
[set global-proportion 0]
2 i& P% s4 v3 L* l/ X5 y1 q8 ~3 J7 V* z[let i 0: l+ H$ i2 l( L1 h
let sum-money 0
1 e) J& B; E0 i% ^2 s  Hwhile[ i < people]
9 M4 T. z2 S& E8 {& J; ?[
# k. R1 q( t3 x* ?1 A1 j% J8 n& ?if( length (item i
7 E: d! Y/ L) i, j[trade-record-all] of customer) > 3 )

! \. S5 Z$ p9 ^3 i  p[2 }% }8 @* \: z: l; Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 g& F+ q1 G( {4 ?- ]2 X' Y]/ O( |; ?! j' f% a
]0 V9 p8 j8 c, A% g
let j 0
2 n; r) E2 _  F5 blet note 0
" P$ U6 a+ W2 l+ \9 ^while[ j < people]2 {6 k5 \3 ~2 z% J- q# L
[
3 v" C) H8 x& \if( length (item i" ?2 W* L7 s5 E* c1 V  G, T$ q# @% a
[trade-record-all] of customer) > 3 )

9 V) T! A( Z. _" {[6 ?  {5 ?% m- a! _* G4 r# p
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 w3 W) \& J; z  `3 z( k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], R+ }- q% w6 N' z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 W8 ^# g: Z% m5 G: c0 a8 v5 K]) I1 o; C' @, j  D
]
; j% i  i0 D' }/ c2 E0 zset global-proportion note" w6 Z* K3 L) e% H3 ]! {
]
8 Q& D' i( {4 r  i5 B7 I2 Y: H' i& Mend
+ l& n4 [, p3 S( S$ a0 _4 W1 @1 C
: D3 b' J. }3 X. q& `to do-trade) H/ s: W1 B% c
;;
这个过程实际上是给双方作出评价的过程
" \: u7 J9 b9 Y* J# R8 Sset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! h7 r1 Q4 ^/ a2 q! W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% b; k: V8 n) `5 Aset trade-record-current lput(timer) trade-record-current% S. V  s6 V& s  V$ }3 _
;;
评价时间: R  d, u8 m# D3 b4 v
ask myself [2 }' l/ ~/ f8 v, e8 E
update-local-reputation
7 `3 s7 r$ ]# q& K* c) C' p6 mset trade-record-current lput([local-reputation] of myself) trade-record-current
8 U) A0 f: j4 E]
8 L5 H6 D& n9 @( e9 A' D% Q+ Lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 o2 s. j* D% D4 ?: b1 r2 A;;
将此次交易的记录加入到trade-record-one' ]9 z" z' i, t. \$ s! O" i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
+ _. W0 r. s5 D: M6 zlet note (item 2 trade-record-current )) U0 L3 d$ N( _: W: g* `
set trade-record-current/ Q" A% W: B/ H* j+ e$ C
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 |" O" F7 s; ^2 j7 o
set trade-record-current
/ w! a8 A5 m/ s' |(replace-item 3 trade-record-current note)
' O& ]! z% {4 O
! H# [0 r( ^9 y% H, i) F

8 p( H4 c1 ^& w4 }+ S# qask customer [
; w2 g0 {; S5 `$ _/ l7 r) M% v$ Vupdate-local-reputation
# P2 w! N+ f0 ?; ^0 D& eset trade-record-current
" X2 r$ `) P/ V/ x+ g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; p0 X" Q* T9 k. o, O
]
5 {5 T& |1 T* D$ f2 A* }8 g
+ F8 {7 z2 n' Y9 _% c; A: i
7 P% H; ?: M- f5 Y2 X  c/ o6 F* C
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! z+ d" x* L( d  P( n

0 i. M( p6 k2 Z' e1 A; a$ [set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 |; D3 a+ F& A
;;
将此次交易的记录加入到customertrade-record-all
! ^. w0 J1 [7 Y/ r! @9 zend
# Q3 }& |8 ?0 D3 p
  P4 Z# @* ]& i7 E$ `( ]/ {to update-local-reputation
! T  o- Q- L, h# \* g& {set [trade-record-one-len] of myself length [trade-record-one] of myself
8 l- ]( z) [  ]9 H. j# d# z
# z) R$ P( |2 ]8 F* `5 w3 m* n' V  y7 @6 V3 s0 ]0 n
;;if [trade-record-one-len] of myself > 3
1 `3 A% J5 r" t( H1 c; Y
update-neighbor-total' j2 E; i/ y' b* C) F9 _2 f+ p
;;
更新邻居节点的数目,在此进行
) T& @7 M# U# g8 m8 alet i 34 w" p- y; Y+ ^9 E! ]7 m
let sum-time 0
, T( b5 w6 D7 F2 Z. jwhile[i < [trade-record-one-len] of myself]* u) p/ @/ }9 ]! z/ M/ l
[
* {3 t: [# I- aset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 P( b% J% G( Sset i
5 i2 q5 D# }( f3 O) b5 P( i + 1)
# v$ s$ d: R; K$ o/ {
]: b! [& J$ V1 s: C* L
let j 3# H' X& q+ P1 T+ [3 C
let sum-money 0
: U- w8 d' H" X9 Kwhile[j < [trade-record-one-len] of myself]
3 H0 }7 P5 x0 P( l[
" q$ e" L2 A7 ?, a. N5 {' y( O4 M  Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 \  {3 Z, g% r- Bset j
) d1 R: U( v7 b( j + 1)
1 D% ^! \. V) ~5 A3 ~
]
; x7 A) l% m# V9 O& ~& Flet k 3
. d8 J6 ?8 B, T$ t; ]. J  ~1 ?! M: Tlet power 0) d3 I- v, l. j, S8 I
let local 0
( m$ a% Z6 B2 n; S. M% awhile [k <[trade-record-one-len] of myself]
2 ?) `# N- N. I+ X9 ]# {[/ N8 d( z. Z5 n' `5 z2 f5 f
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) & b( O' f, P- x( `, X
set k (k + 1)
  p# Z; G" J3 M  O]& k, o( p$ m, H: G/ N% O
set [local-reputation] of myself (local)
  ]1 M* M% f# q3 `end
! y! y% n7 b; D5 k5 P. r
" ~/ u" I; I  U! J+ m, a7 vto update-neighbor-total$ |1 @' c# c9 e6 y, B

. d( a7 v$ o- }+ c5 iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ B; Y' [( F% y3 a! E* J& k* ?& T5 w) d: \
& A! \& D% j3 r+ U- f! y5 m9 w9 D
end
& N$ v9 h% P+ @0 g
" \/ a. d: O8 I  cto update-credibility-ijl
2 F, P8 Z$ |. o' c
" w; n* `: b, `8 |7 {;;
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。
+ h3 Q. B% H" h3 U  C" P" y# i3 ilet l 07 [5 }' J/ U+ o' R: A; F# _4 ?# n
while[ l < people ]
7 k: V: W# q2 D+ r8 c8 Z3 A* };;
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8 N- l8 ~$ D- i
[
/ p: s( d2 i' W. S& o: P3 ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- a. C4 ^. E& Z/ m; Dif (trade-record-one-j-l-len > 3)" F' Y% D6 j, K) s. ~' l
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one3 c& c3 c' K: A1 ~( k# t
let i 34 t- g8 b! b% Z- y- `6 N$ B3 {
let sum-time 0
6 n2 A% w$ d* u' g9 e( Xwhile[i < trade-record-one-len]
4 D8 i2 l/ c% H! g) y7 _[. w/ b( D  v( [" R4 y) M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) \3 x1 J" }: ^7 [# @. G
set i8 S/ y/ {6 c; F
( i + 1)
0 y* J. ?4 r. E( Z  u. ?) K
]
) H/ X# c% p) O( p9 S& Glet credibility-i-j-l 0
4 T, l! |; F! h  f2 n: i& Y;;i
评价(jjl的评价)! r3 K$ \7 Q1 k
let j 3
7 g8 ~( J# Z6 ^  \3 ]! |8 Hlet k 4
4 ]) [9 S" l, s7 d4 ]# d. D2 G2 s4 Ywhile[j < trade-record-one-len]* P8 @" T# ^, }; U& c3 E: R
[
6 i* o1 C- ?+ P& L1 Q; U) Pwhile [((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
" a- g2 q" E, z6 n  Iset 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)
& S/ g- C5 e. `  H7 @3 ^5 @set j0 [4 m) D/ ?' ^/ r/ V
( j + 1)

  F" r+ M6 o  t  {! r9 [7 j]) r; F5 i3 ~0 H& |- v
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 ))# ~6 n  a0 J6 o3 j8 @5 d0 C

0 ~8 o( m% [1 e, g2 o* P9 z! D8 S

. @6 O+ M: ~- E' u* }5 vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 I+ n+ ]( n6 l8 R! {;;
及时更新il的评价质量的评价' x+ I5 r6 D" D. ]( v! n
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 v% r! l' E) ?
set l (l + 1)
8 P( |$ M& t: K# B  O: ?: T]
& L( o; `( X7 bend6 R0 d+ ?3 i$ Y# Z/ K$ N
2 F" z6 f; U7 @; v* ?
to update-credibility-list
& `/ o" p0 D) y: Q% r5 x# Ulet i 0
, R9 k; E' A; l6 x, j' Vwhile[i < people]
) G; T9 l9 X% Q# f& X. j7 P[
  _3 c% @  U- f4 [8 D, Jlet j 0* U% R& `  Z  }6 e# J
let note 0! ?, \+ N& d! b3 J; C
let k 0
1 A: K- m. o/ S3 a$ C;;
计作出过评价的邻居节点的数目
' e. R8 q: Z. D# c9 \while[j < people]9 I  O) U7 b+ F& E# e5 M. T
[' `7 m0 p( j4 u9 f
if (item j( [credibility] of turtle (i + 1)) != -1)- n4 N9 x9 ~/ m
;;
判断是否给本turtle的评价质量做出过评价的节点) @( S' v/ O. D* J/ a& o+ ?
[set note (note + item j ([credibility]of turtle (i + 1)))
7 I3 V3 t; n2 U7 T;;*(exp (-(people - 2)))/(people - 2))]

7 C  {1 [4 X9 `# Y6 gset k (k + 1)6 Y8 E0 ^3 R5 {3 {) _
]5 F, ~2 p, e6 |
set j (j + 1). A6 m: d+ ~8 ?) S0 Z
]
' T3 Q9 J$ `- u& D, o1 ^2 [  jset note (note *(exp (- (1 / k)))/ k)
* J$ Y9 R, d' g2 f1 i; Kset credibility-list (replace-item i credibility-list note)
3 p* s1 F- R1 N! T/ I9 [set i (i + 1)
( a% G* \9 D: Y7 |- }]
# T, L! s. Q) O, d) z8 Mend! Q' @' L* f* r+ k

# K3 i9 i4 B4 v+ kto update-global-reputation-list
0 S" N, j4 Z6 dlet j 0
9 A3 g& G# I- b* W# dwhile[j < people]
" U& A* j9 B$ N[3 d. k, g: B2 W5 {. r' p$ x0 C9 i- p
let new 0
" ~, U1 D! j0 t/ O0 f, E6 X& f* z5 E;;
暂存新的一个全局声誉
# t) h+ f, ?& M  G' e2 Tlet i 04 T; a3 m# |$ l" H
let sum-money 00 E* a2 d/ O7 z) s
let credibility-money 0
2 T. @0 E$ T+ O. b4 S8 vwhile [i < people]- Q0 g% e+ W* I# F5 y3 B, ]5 O
[) x+ g# r0 o) x$ R
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 n' o7 K" c) l( A' y- H, v
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ F+ E0 b8 T8 U0 I2 _
set i (i + 1). @2 u  |% P" O
]+ Y) h! s, Q  l* C
let k 0& x" M$ C* ^5 u' Y8 ?7 Q/ T7 G: H
let new1 0
* H* l( U. K; T  `* |) Cwhile [k < people]! {3 c- c& Y2 x# v7 p. S
[6 A! _' y9 o( u+ I. L' x
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)& F4 h2 i- d# X! p) |% @
set k (k + 1)) g/ S4 F+ m, ]3 J- v& c: N2 l
]$ o$ [- V' J! e. A) _8 k
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  k. Q' ^; _  U, Q+ fset global-reputation-list (replace-item j global-reputation-list new)
4 W2 C0 y4 H, u0 mset j (j + 1)& R: h$ x! P# \* O8 d6 U) |
]
. y2 U) T% l% ]( }5 V1 i: fend
) g+ e$ ^, m3 q
% ?* [& s, A9 f$ x2 A2 F; U
  F- P7 k' E7 N: M( v. `
8 a$ B+ P8 R, F' K" X" kto get-color
2 n4 [8 D, T4 V4 _. ^; Q: Z9 P3 D1 c- f7 L) E. Y
set color blue
/ C1 ~* [6 `+ J$ _! f" Z# h0 V' P
end
& r" H' X+ Y1 f  W1 y6 _7 F& H3 V1 A0 _2 v! `- {
to poll-class
0 q, t6 e5 C' k/ `end% \3 A+ `2 u- X7 r
+ _5 l' T0 `& b" f' @
to setup-plot1
/ `& ]# V+ D6 {3 m! U$ a, h: R
. r4 _) Y# g7 E- ?, Jset-current-plot "Trends-of-Local-reputation"

' d; e9 }5 W  d- c' `; c- C
9 `+ F+ B4 t) C* ?$ gset-plot-x-range 0 xmax
- o% ]& _9 }# V/ Q' b* \; E
  s$ J! J; k" Z
set-plot-y-range 0.0 ymax

* t$ F- r' e3 M2 M& R1 Gend
1 M, |9 X4 R1 d
  [: K) i9 q: D' I3 C, ^9 tto setup-plot2
. i8 X. _3 u# U6 I
1 z% t% Q- e/ `2 d7 q& x& Hset-current-plot "Trends-of-global-reputation"

% f/ {' e2 I+ S+ H( d1 e4 Q  i' t) y; ?5 V0 Y9 v& X
set-plot-x-range 0 xmax
& W: y( J2 V' s. z. n0 g! @& ~; c
- U+ i( ^6 z2 ^! y/ b: ^: r
set-plot-y-range 0.0 ymax
" {9 z4 d: g: k) [4 q+ F$ i
end. G0 U. W4 z4 z! }, ^; t

" m8 x( ]1 l( I" B* s1 ]2 _to setup-plot31 l$ b; M$ `) N4 z1 s
# k9 m: I2 ?* p; i. p) ^
set-current-plot "Trends-of-credibility"

! D0 u+ q: h' N6 H9 S; K/ L; d7 _( O9 h  [2 i
set-plot-x-range 0 xmax

* M- e& C7 ?7 F7 S1 _& W( K3 }- m; A; p
set-plot-y-range 0.0 ymax
, X9 d* N; A9 q) f1 T  t4 q1 N/ g
end% [  G8 G- p) k" E) r5 S
, ?; P) g( s1 j& p2 W& W
to do-plots) Q4 o6 e& G; r) [( R/ Z3 [
set-current-plot "Trends-of-Local-reputation"
) M  C% P, v* E7 k& jset-current-plot-pen "Honest service"
- T; |( }( N8 i) d, zend
, w# r4 L8 T9 W7 Z- m8 D3 n  r, R% H* t1 Q' M
[ 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.
. T9 I3 b/ U# j3 ~  [: z% J- s8 i! r/ N- ]
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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