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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:; R4 \" D& `; p* m& X8 F8 E
to do-business
5 {" D% W& x; M rt random 3603 r! w$ S* z7 p
fd 1
3 S$ v: @! P/ E  K ifelse(other turtles-here != nobody)[1 Z( Q% s% L6 U
   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." A# T! x6 N; ?! ^% o1 A
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 x7 U8 M1 W; b0 l8 h0 B1 {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 R+ X* j! q4 H3 s4 [' m
   set [trade-record-one-len] of self length [trade-record-one] of self! |& c, t6 Y4 E2 w- f
   set trade-record-current( list (timer) (random money-upper-limit))( O' U; b  P7 q1 G& v' y
* _) x6 d. q; B0 ]
问题的提示如下:2 r9 x; [2 L! B) E6 _$ L
# T8 n0 o6 h/ @. s
error while turtle 50 running OF in procedure DO-BUSINESS5 \  |. O& u  f; o% U! g7 p
  called by procedure GO8 O. b5 b3 o7 @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: {% v; w/ S) Z$ p
(halted running of go)
1 V  w% r$ e% @6 l+ Z4 e9 j0 V* w& |, E/ @5 K, 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~~
# U* r! _, r; u3 G) X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
/ H+ h7 b( V" m( Dglobals[' }0 f+ \: i$ g/ o; ?
xmax
1 z; d7 u6 E5 `* _2 }/ B, Y+ mymax. w$ _. U& W  r- ^# v0 p
global-reputation-list
1 h3 [. ]! ~9 W& ]- ^- ~) a) O$ J5 d3 C. D
;;
每一个turtle的全局声誉都存在此LIST- y; g; x7 B( i3 v- h
credibility-list: P$ G6 P" o  J& w; [
;;
每一个turtle的评价可信度. X9 v8 Z, K: f- d& d# {
honest-service
% F$ d9 `( M( i( b8 A+ P6 uunhonest-service
" L( J6 K4 X: ^$ D" a/ hoscillation
! O4 [# ]' Y# x7 }! jrand-dynamic
% U/ f  Z/ R6 U2 z6 e; v]) `" L$ L+ v1 u* H
, F3 o9 X# x( \* T- Q
turtles-own[$ ^  V0 O1 v  O- O, i7 r
trade-record-all
3 L6 F, J' |3 d' X) k$ B( };;a list of lists,
trade-record-one组成
" M! Q: l4 p, rtrade-record-one
8 G& F" b8 p8 [( X" 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. Q8 o& d! \- X" t3 t2 ]

2 T5 g/ w* R+ i& o7 e/ M0 n, s;;[
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]]6 N9 [" @: Z2 N" {0 K9 x# T" W
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]
% z( a# M) _. @' P  C" ^  t# S' D# k/ Tcredibility-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list6 t% \* l5 F9 m' e& V5 b+ B! b" W
neighbor-total( P0 A3 l- [3 x% k+ K9 W: s
;;
记录该turtle的邻居节点的数目3 l; n0 v! ?6 z' ?3 d2 B' t- V* ?
trade-time2 @; i( q  o2 b5 z+ X2 e# F! h( |
;;
当前发生交易的turtle的交易时间
- W) G! Y) ^1 i7 b; x$ yappraise-give
1 q; u- B! ]5 a2 ~: f;;
当前发生交易时给出的评价& I* R' K/ D* m4 V/ E5 ~( r" P
appraise-receive" G! x' J# r0 U, Y8 a2 Q
;;
当前发生交易时收到的评价/ w5 |4 r+ U9 ]( S$ w4 L
appraise-time8 x9 W  \; D  _6 N
;;
当前发生交易时的评价时间1 J2 z/ v" H3 S( \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  W6 ?% Q9 `/ Y- e: X6 S# T. ]
trade-times-total) c& m. C" C" ]5 E  }8 d4 U( e
;;
与当前turtle的交易总次数
' [$ ]# s4 E! J, E8 e7 rtrade-money-total
4 r. z" ]3 b9 k% Q  ~4 {0 a/ `;;
与当前turtle的交易总金额
# v  C- ^* H1 Z7 n, clocal-reputation
- s$ E: b7 i( @3 Yglobal-reputation
- `& o; n0 ~6 w# F' jcredibility$ R6 s- I  Z9 A+ V- F: _
;;
评价可信度,每次交易后都需要更新% g2 H0 R8 |: F. J) d& J4 r
credibility-all
4 x/ O+ k! D, B' \7 m# L;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据: N! P* ^/ P$ k5 f9 n; k. p. C2 _3 t

$ \+ O6 X/ m! E;;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0.57 Y  E# |; f+ _* c: I9 R* }( s
credibility-one$ Q8 {) ^7 q9 C/ I- @& L% D
;;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: ~5 J& T( \' W# ^" M, L8 i
global-proportion+ z2 _0 k% K! W/ S$ s2 L! W6 `) O; Y
customer
2 w- Z- l' P/ R6 U8 w6 b) }customer-no
% ?! H# O0 V8 `) ctrust-ok0 I8 z# y* ~; T/ R  u
trade-record-one-len;;trade-record-one的长度/ K6 M; x5 [0 X) v' k0 b2 l
]
. ?8 @( e) t$ a2 F4 m0 y( N7 i7 L: F# b
;;setup procedure
" [: }: }" C  R; w, d' |% z+ s# J2 g9 x1 y
to setup$ b* z+ C) h8 J6 t$ S- U" W
3 ]( k3 O% |- E1 j9 v
ca
2 K: O9 T% `1 S  V

  h' X8 q6 S8 B1 T# p6 I; u4 Ninitialize-settings
- @2 p. [7 i" Y- t
' U" M2 V* _( S* F. g
crt people [setup-turtles]
% Q1 n* q1 o) s; l, |7 T2 d

4 \  V8 P% s9 T8 w" J) G% ireset-timer

% x1 M5 l! Q0 |4 S
& h( k" [( |/ ?6 Cpoll-class
* K! }4 V5 w" F. C
; F8 E+ ]# F8 V* O; s
setup-plots

( q9 b; P; A5 F$ N3 k3 C9 V
2 M/ R' Y) }7 G2 l, Z5 ?do-plots
6 h1 |7 n% R+ P7 q; _# t) v
end, S" I+ b/ u; V1 s  J7 I

% a* ?2 t9 N) n. ?- Zto initialize-settings
% J3 g1 k, G/ H# u' `% C% N  b- W. p" M( J0 V3 j
set global-reputation-list []
, `; A! l. e5 L7 z+ O* k9 a# H
( L$ H- l4 a5 d; @8 k/ R
set credibility-list n-values people [0.5]

8 f+ g* f+ ?; E( i" `" P; `3 Z4 {+ b# @' v: E( e
set honest-service 0

6 p7 l, d; b8 R* o. L, b3 `
- o( L6 j0 w8 [/ B* q8 Xset unhonest-service 0

4 G7 K" n5 V: T* V! g
) o3 p1 Z) _. u, g( cset oscillation 0
3 s! H/ {) z% }. s
2 u. `  s! J! [$ V+ O
set rand-dynamic 0
9 q5 l7 N5 f. i  p. F& X* w3 F2 N
end
  F6 c: v/ s$ {# u; {& Y( {
5 M7 W4 a! ^: P" `$ |# M4 Xto setup-turtles
% p- ^0 C3 i8 j( Pset shape "person"
: f0 A" J" f' A5 K" W( fsetxy random-xcor random-ycor
9 _4 i+ x9 b7 g: oset trade-record-one []
7 H, ?! d5 _. B. W1 K
7 j$ I$ f* U4 G' J5 e
set trade-record-all n-values people [(list (? + 1) 0 0)]
* g# v- T* w6 @, U5 z# u) Z
0 x; m. A# L' G
set trade-record-current []0 o' f. }6 _$ S  {1 U+ a& |8 V: O
set credibility-receive []) S+ G/ C- [" ?
set local-reputation 0.5
$ ~; K+ b" A8 Eset neighbor-total 0
6 S" }9 j2 [5 Oset trade-times-total 0
+ S1 R3 ]1 b3 G6 x: @set trade-money-total 0
. R) \% P5 ]5 l7 s8 n: }: N) vset customer nobody
$ h7 J  e# E( Gset credibility-all n-values people [creat-credibility]; q9 i6 C% x9 C: r& z
set credibility n-values people [-1]
* j" `2 ^5 X8 N% ~0 Aget-color
$ [) J, O( J: r" @# G/ o0 |! ~. t7 x
& B. h+ a: `0 m! Z
end
& }+ A7 ]: e5 B1 H% T# ~% S7 z. a: N8 w/ j
to-report creat-credibility
1 J. P7 I2 X4 ~4 R; O3 H3 vreport n-values people [0.5]
( a* ]- N# n+ e0 iend
% c$ s. A8 q$ K# P  J+ Q
. U& Q3 t" Z$ \6 U: H$ S, ^/ ato setup-plots
6 ]' W) O8 j( h. u! ~8 X3 l7 y) Y; P; d
+ A1 }1 L6 {4 |+ wset xmax 30
# D6 |- c; {6 s  C8 G3 X
0 o# b' k* b8 f+ r4 A! U& T) u
set ymax 1.0

- D; }* Q1 f& c, U" J' i6 o% k0 A! h0 z/ M
clear-all-plots
1 D- h! ^5 M% X* T

% X1 k# d- W6 @; K- ]5 D0 csetup-plot1

0 P' v! p$ l: }0 Z
* L, F" v8 c. Y1 I' \& M. J3 ]) Tsetup-plot2

# b* P% V. C$ P
, [( G9 d  q! L/ t& W0 `, ?: Fsetup-plot3
4 Q* T* ~) q! ?, I
end
, b$ U% V7 r7 q
" S" R# A- ^" N- J* E;;run time procedures
& N* K. @  n8 z% u5 `4 a* _/ w0 |4 S& c
7 z) ^, `$ E/ S. fto go
) j% n2 b2 G2 S, p& G  l  {
; M8 f  p. I/ c" |4 h% oask turtles [do-business]
: A7 e( P) X! X
end
8 o$ y' Q7 k( c: U0 f* k+ Z  j+ r0 |
to do-business - B0 n% }: u5 l1 \6 m
' P1 M  ~, v2 S% S
- v2 `3 z- y/ q! K7 ]2 c2 q
rt random 360

+ [4 X1 {" x8 T$ }9 I) J" ^- f* X4 Q& q* w) p
fd 1

& h) _2 V3 Y) |* G8 Q, J( i. U& I) C# I
ifelse(other turtles-here != nobody)[

/ o; }/ J7 o% J- V, F- g
0 [1 V) q; M1 Y9 jset customer one-of other turtles-here
& n; O9 W, {/ h0 p9 ~7 B: l) _5 w# w

( x% A! W5 P6 T8 X3 B( `;; set [customer] of customer myself
. l+ P: r! M/ \9 J2 P' i! q

' v; x9 x) u  @8 Hset [trade-record-one] of self item (([who] of customer) - 1)
8 g5 x- R6 B* x8 [6 ^. V[trade-record-all]of self
* f# K! p. R$ @, p$ A7 c0 R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" S' L5 |) V8 L$ k: \0 q' P+ h

( @! J# w& w+ V* I& j' mset [trade-record-one] of customer item (([who] of self) - 1)0 F/ o# A! }1 e
[trade-record-all]of customer

( c% ^) x& c6 i. J/ r! |- l; u
" E/ F# G; X. A5 a$ Aset [trade-record-one-len] of self length [trade-record-one] of self

; x  e9 v; a. ?+ P, f  V+ m9 R# }% I- v& H/ B6 \' K4 W
set trade-record-current( list (timer) (random money-upper-limit))
' x) p' P2 ]6 E! K( D

* @* n* @5 x' _% T* ^ask self [do-trust], T, N) b5 {* I# e
;;
先求ij的信任度8 l& @  t- V0 V) S+ U1 f# v9 ]

& f9 v0 j8 F/ Mif ([trust-ok] of self)( C$ Z" s/ N; C
;;
根据ij的信任度来决定是否与j进行交易[
/ k$ n* K* z) }# pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 p7 d) e$ i+ ]  J' W6 j& T

- O3 v( [5 d8 h8 X3 a6 d1 r8 z  {% O[
& o4 e/ d5 m. U/ k) \0 }
2 }# F& _( g: t' P3 j3 I+ ?6 D
do-trade
  C- {, o; g* _( G# a! \
+ o, c) N0 |5 b
update-credibility-ijl

+ s* {; C5 H3 h3 x) L. ~
0 u( z  _7 y) _3 d$ o9 wupdate-credibility-list
- O; N  a( \( P' P

7 L& R. N3 e5 N+ U, N, o; x9 z9 g& h- n& D% z. j, S
update-global-reputation-list

3 J8 N# |2 H. Y
  a& |& L+ T+ K  y5 u" g: f) M- Hpoll-class

8 u5 s: p3 ~9 E2 n' k/ X
0 D' {( q! E( o: O6 G$ }8 ]get-color
% X% |# O9 x' i+ }) H5 ]0 ~

+ @( q# |2 ^$ F0 m9 m( a9 E( Z]]1 j! }. b7 R5 W. b

* j- C- @* X+ i/ ^# I( I;;
如果所得的信任度满足条件,则进行交易' r0 X  {# L# I  M

9 Q- ~3 ~& O, ][

# a: W4 o* l4 x
* V. O; M  Y, m9 G1 F$ j* Srt random 360
( V+ a( V, ~& t' V, ^+ R' ?: W  s

/ T: q2 ?' ~6 H+ ufd 1
/ N5 i" n. K# J& t, _; m, G2 s/ |

- ^9 i) b' O' ?: m$ ~8 `]
# Z/ ?* R  ]0 N) k& U0 R
: z# y0 Q. Q# Y# y
end

: x5 h8 q$ X. B0 Y, p$ ^' I9 v9 C+ S
to do-trust
6 ~) O- f% M$ L" [& Z- v5 [set trust-ok False8 o) G. Y1 C& g0 ~$ a/ k% u2 e; ]

  W/ }0 [5 p# I/ d) j

) ]5 m$ q, g9 V: N1 Alet max-trade-times 0
4 _( U  ^: X  S% wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: A7 u2 k  F; v( Q. s: {" Xlet max-trade-money 03 [# z' a" q6 s
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( W2 F% a7 S2 ?/ x
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 G9 w$ k* L; o/ J* d

% c; e; c" E, ?8 [

5 m3 P9 W% B2 j$ Kget-global-proportion
& D0 O( J. R  B& ylet trust-value. w. F' h, Y, L% x" j$ G' c- J) T5 r
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)
- }8 u# R3 l9 Y/ l8 g2 q
if(trust-value > trade-trust-value)
* p" m9 @5 W& _5 M[set trust-ok true]
! d. R4 d8 U" i2 ^% l3 \end
0 k4 J. X% X( [( }1 L8 C( m7 C( s2 L
to get-global-proportion
9 S! |+ r& X8 y) S& P0 }ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 e" K+ u1 s: o7 m
[set global-proportion 0]
  b1 a: ]+ _0 c/ X: G[let i 0
" N' F( I4 s' {, w6 tlet sum-money 0
: n. F; o; X( m# s7 hwhile[ i < people]
8 ]% c+ y) C4 x+ F5 B' Z) K[3 |- j8 V# F  R, ]. o% O* S
if( length (item i3 Y* p' V0 d9 P% V: ~
[trade-record-all] of customer) > 3 )
& O5 t( m( c$ u5 ^) F* k7 u" G4 A
[, R& H/ P$ c2 n2 n) u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& ~% l( n4 X# L* V( }
]
8 \; H. ~: p! o4 f: T9 P% \: Z]
) v+ i* I2 d! P' g$ q. qlet j 0+ j4 ^& i0 r/ x3 q7 w5 v
let note 0
; o! x! {- X& K4 o3 W3 swhile[ j < people]& J6 J* N8 A5 u9 s& w! L  @
[$ U  a4 L1 W  n, l
if( length (item i
6 l7 h5 a+ y7 C[trade-record-all] of customer) > 3 )

0 G$ A& U! h; J, \5 ^# N: A[
0 @! S0 u) g3 U- K' i0 Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 ]+ F! F$ T+ A: W4 u- k* U- b1 t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 J8 x6 Q: ]$ j* f. g. ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 K( @* [/ \! d& X
]
" J, N$ ?' ^# u]
- s- ~8 P/ k; w) Xset global-proportion note% j" d6 m+ K* i2 Q( B% b/ o
]
3 s' a$ D* Y$ W% ?' D- E# X, uend- z! t. m% u/ H( T1 B' U' o

% m+ K; [6 k. n9 sto do-trade
% u" o0 i& ^! R+ X) |1 P" a+ R, u;;
这个过程实际上是给双方作出评价的过程
3 C. \! b. e# Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, M) Q0 }1 O$ Y: Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 K! w6 S( z8 o1 P/ c
set trade-record-current lput(timer) trade-record-current* v) Q6 r6 W' J9 ]
;;
评价时间
; O% @. K) u5 t- U" s! f; {; W- lask myself [6 @+ M0 E  m( F/ H( u* O  S, E
update-local-reputation$ o. g  J5 }" P9 K, }% b
set trade-record-current lput([local-reputation] of myself) trade-record-current& a5 t3 v$ Z8 g
]8 M- U, f* v& S. z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ Y9 y' ~6 N5 x
;;
将此次交易的记录加入到trade-record-one9 B. J  E7 ?/ z: k& X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 h5 n1 E$ @' d' b* j  i  x% I- I5 l8 flet note (item 2 trade-record-current )9 ?1 P% F) i/ J
set trade-record-current
- U" U' s3 Z+ t6 x' a! N( }0 m(replace-item 2 trade-record-current (item 3 trade-record-current))
* ]! n. a3 V# a, \, @, I
set trade-record-current
( b" p; @) L, F$ S0 T/ |6 e4 f, q(replace-item 3 trade-record-current note)) C7 C9 {% O  B9 _  i
, l. `7 U: d9 a

  ^" S) i  @) e$ s$ e& Pask customer [
! ]* B9 M0 G6 `8 Y, M& k2 Tupdate-local-reputation- G6 X1 f, p) E' W+ n
set trade-record-current
# U' Z% W" i4 x(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 m' A7 N3 k% J' B# |" ~]
6 e/ s! U5 d6 s' K# u) [' }; `4 _3 j3 e/ K
; Z) _4 ?* u. t7 J) Q5 M
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 O- `6 U! c4 G& t& K
2 Q; b7 b# }4 C) c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- f# k* m. L: Z;;
将此次交易的记录加入到customertrade-record-all
% r8 |7 M% l2 Y$ I: t" v; G- D) C/ F+ gend7 i  F6 z# |, a4 D# h1 T
- U+ L, j7 n: j; ]2 o
to update-local-reputation% J6 B3 w* Q( w. E0 J* t0 d- h
set [trade-record-one-len] of myself length [trade-record-one] of myself/ x5 x  Y6 \0 W4 _" N- D3 B* A
2 w9 L9 c0 q8 h  Y8 w# }9 _; e

- t' J- ~& f( w0 _9 n;;if [trade-record-one-len] of myself > 3
% N2 S* `: d* k+ S: \! N
update-neighbor-total, e  F6 T$ Q* R, [  y3 X
;;
更新邻居节点的数目,在此进行0 Z9 u) V- t/ s  N* ?
let i 3
; Z# |7 Z5 E4 |6 U( y  c- flet sum-time 0
% P6 }4 i' g, f& Xwhile[i < [trade-record-one-len] of myself]
7 P: L6 @* ]" c9 _[
; H  J3 X1 i$ uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* @6 q9 H; O, Q" d: `set i5 ]" a4 i" S) s2 ^. a
( i + 1)
% n8 A1 @( L4 G( i' K7 [
]
  b* i% f8 t1 |let j 3$ L6 W5 t7 E+ G" R
let sum-money 0! S5 ~& V1 r% {- C9 @" o5 z# v6 F
while[j < [trade-record-one-len] of myself]2 |3 t6 d" k: E" I
[( K4 V" G' h+ U
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)- @8 |3 C  j) j$ e, [# r) m- }% t
set j
( h  V5 u- \* z/ w( j + 1)

) ?3 U3 P7 H- [4 j]
. l6 [, p6 z7 o/ elet k 35 X) ~' v9 w6 u, ]+ g
let power 0$ k, A) ^' z, `5 |
let local 0
% ^' F0 R; l7 O  ewhile [k <[trade-record-one-len] of myself]
* s$ C5 b1 Y5 p8 r% c4 r, [[' ?, y7 y' t; E1 U
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)
& O) S  U3 P4 J3 T( _9 L- m  J- Jset k (k + 1)
$ m) V" W" F1 R6 _9 L3 O  e]
8 p7 ]  V( W& Oset [local-reputation] of myself (local)
$ R& V% V3 H5 `6 `2 y" Gend
# |& o1 z. [  A  T5 r- R* `; S0 M# y- L; G
to update-neighbor-total
5 C8 d- p) N" f* a2 j& ?
5 m  b/ y6 T7 L0 s% Oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& e$ Z% {, ~* K7 D  q
; w6 y( U4 t% `, \( [& j* `
# g- Q; [- G! [0 l- T. {( J- b6 w' s4 `
end6 G8 j3 ^1 r) i+ |
8 t9 i/ q( P& [2 h1 C4 |( O- r: l
to update-credibility-ijl
$ N1 E% U/ A7 P9 F0 i2 _$ p. T( Z6 z  e* m$ N% U- C! \
;;
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。
" X. [5 Z+ |) T) D/ alet l 03 _; b3 o4 q) W' g. [- h/ }
while[ l < people ]5 K! O3 A7 P/ B: i; T5 O# A. }  E
;;
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% [+ g/ Y# s( O9 Z4 k
[) ~+ x: G4 W' T7 f* }( V* a( E! ^9 F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ e& m0 L4 f' D, x% N! G3 ^
if (trade-record-one-j-l-len > 3)
" i% q- K8 @9 ^. x" H* ^1 z[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
; }8 ]2 w. m' O/ wlet i 3  p; v& L% g. p0 x
let sum-time 0
& }% k; e# m: X' k2 s, O( Fwhile[i < trade-record-one-len]
- x5 ~  m9 c( p) y2 G+ S* A[
- w5 z0 G; S% sset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" E: ?4 b7 X; L' H: F# Q
set i% o8 W. J6 P. {
( i + 1)

4 @; K+ S; e' \* D2 F/ U: i]
' l8 }* ?7 L* |( r$ \% Hlet credibility-i-j-l 0
+ B& C+ V# M) S3 f+ H4 A;;i
评价(jjl的评价); Y, W# A& m6 X# z, E$ s4 @
let j 3
5 n& {; `" n+ ~& v! A7 Tlet k 4% V; N" `2 l2 N5 ~
while[j < trade-record-one-len]! U! V5 z6 a6 r) w* `+ Z4 M
[, f1 r4 v+ G; T1 g( l
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1 }8 ?) S% G* W4 O4 p; O9 o; C$ L1 ~
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)! g* _' @# ^" E$ r% S: c  A
set j
% l" Q' x9 M1 r2 w% I$ X1 ~1 S( j + 1)

) V' f8 U6 G" x- ?$ V2 g  z0 @]
$ r+ v( s( _% ]* {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 ))
0 L+ a" c! \/ m9 q: D) ]  k0 Z/ X1 q! |- L9 ]$ {

& N, W% W; P3 U3 _; Tlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 O+ {. P: a& ^# K' _" N% Q3 y
;;
及时更新il的评价质量的评价
: u) P) _4 ?: \& b3 hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  f3 ^5 C2 S# Q$ @) ~- |0 o6 t0 S
set l (l + 1); p* |' u8 m$ b- {  S
]
2 ~2 X2 P1 s! Aend
% m  c, e& I7 E! E
; S% {- S4 e8 s9 O1 X. X# Yto update-credibility-list
! ?. o7 w, U4 ?2 }let i 06 U$ F* }1 J1 g: R" u
while[i < people]% g8 |3 l; I' h8 p3 U" d. M
[+ V6 \' `4 |! Y" W8 I1 h! v
let j 0& j' b# [7 Y- }) x; O( H+ w
let note 0
; G' B, \; l5 t" |7 Nlet k 0- V/ @+ _: G7 i) W
;;
计作出过评价的邻居节点的数目6 ^) W8 |9 ~( O1 [$ ?1 @
while[j < people]
6 |2 u* f# |5 u+ i9 `. u[
* k" J0 r1 f+ u! S: |if (item j( [credibility] of turtle (i + 1)) != -1)
! ]% ~3 @' ?2 [  N! F* Z/ R6 G2 j;;
判断是否给本turtle的评价质量做出过评价的节点
4 M% K0 g" I1 D& Z7 A. H6 z$ n[set note (note + item j ([credibility]of turtle (i + 1)))% m% k; I* |9 ?) m1 t; w  f2 \
;;*(exp (-(people - 2)))/(people - 2))]

0 J% A+ F# i4 L* n, G9 w% C5 b( Tset k (k + 1)
1 L/ w" ]7 \1 q+ T]0 V" W# |9 J. J3 O6 p
set j (j + 1)* z7 T7 x" o( j. Y& S: {: o
]* D# {# P& I- d$ r. [6 a; j+ N
set note (note *(exp (- (1 / k)))/ k)0 v: x5 [: k7 n" }' \/ p
set credibility-list (replace-item i credibility-list note)  N4 _! q% z5 N! d4 z9 C( j
set i (i + 1)
, a0 I; l7 R% N+ R3 i8 l+ k]
6 T: o0 J/ T5 ^end! a3 g/ F$ ~  r: o3 W+ d$ ^( H

' K) t8 b5 ~5 Fto update-global-reputation-list
9 p. ]9 p' b! glet j 0$ S8 H" F& f# w* C/ ?
while[j < people]
. B* ~) ?) M2 M7 L[
! |2 B' O- t' S$ s: ?. Q( \- Y+ Plet new 0
  l  q& U( h0 a) D% h# T  [;;
暂存新的一个全局声誉+ A8 H" o- N# D$ E6 l& d+ j
let i 0& b: ?, m: x0 J% `4 F
let sum-money 02 X7 V/ ^" S) D- r& h
let credibility-money 0* |6 a0 Z! ], c1 N& Q
while [i < people]/ v- I% o: Q, y1 B' ]0 @* }1 l1 f7 m# j
[
1 D! A) R; Y- _, ^# vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 U5 y# G; V. O+ F) ^% d; B' e& T
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 V5 y( L' o+ U: D  {$ Qset i (i + 1)
0 q8 K: \# T" V- A3 J]4 B! ?: M& M# |5 n8 v$ c
let k 0% Z; \7 l( g! T9 \
let new1 0
6 b+ }% z+ p/ v) Y6 [3 qwhile [k < people]) v: {' J8 s3 P! W$ e
[- H3 A8 v: @+ d3 v. m8 \
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), M! ?0 A6 X% d3 S* H2 q
set k (k + 1)  \! y. Z: ~: a& q4 P9 P
]) h# j4 Q9 U4 k6 A: ^1 Z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & f' K2 |- J' q6 C
set global-reputation-list (replace-item j global-reputation-list new)
% F* x" C' S2 x8 mset j (j + 1)% e. ~2 c3 u% n& h, E4 t
]
. Z1 ^9 d$ W7 {% ^) M( Send; I# u; {  n# f" G4 B- L" q
/ s" i- @* I: A" n
1 c# P+ a- |  @* R* E- I

: X! _5 f; B; _  U8 p4 `& Uto get-color8 Y8 B. E0 ?( r6 ^

2 s# ^% B6 B5 p: s& aset color blue

" s. x  Q( B* \) m: B- mend  ~7 k0 m4 r! ^

& l) b9 A3 `: u9 dto poll-class
, n; p, p0 i7 W6 B& |end
# m/ c$ a' A+ [4 _5 _+ t% a  ]
0 Q( _+ m5 \. {. _4 Kto setup-plot1
. m3 I3 V' P7 f3 d8 L
1 g+ j' }& F9 yset-current-plot "Trends-of-Local-reputation"

/ b4 w6 n; P- ~" p) S3 a% _. d
. m9 c0 l- m7 G4 J7 ?set-plot-x-range 0 xmax
- j& L* t( [3 c1 p6 p- z

2 K3 Z, y; p1 O8 vset-plot-y-range 0.0 ymax

0 N: `, A7 \4 @' [, J7 f7 M0 i0 V. lend
% {8 A( E. C# b& R) M
$ A; o+ p. j4 v! Q1 k1 Uto setup-plot2- a* s6 [. |7 z( U; m
7 j3 D! }4 k" e1 i
set-current-plot "Trends-of-global-reputation"

$ d3 U. m6 q& Y$ w1 k8 L" i( {
' }+ n0 `7 R1 r9 `" Fset-plot-x-range 0 xmax

% {+ C- g: A# v; ]3 O& w3 J1 Q4 m9 ]" \
- R. b/ _9 ^9 H4 I, Lset-plot-y-range 0.0 ymax
0 j) \% A- \3 i8 s( B+ V
end# C3 q" x3 P* u
  J1 J/ _3 V: S5 y9 W: H! |" V8 m
to setup-plot3
, J$ ]4 I2 R- I# x% L
2 t, o! z& s& N2 t: ]0 oset-current-plot "Trends-of-credibility"

8 A" m. M. E% `$ g. T# M
. A1 n+ C4 z- i! {" j' Iset-plot-x-range 0 xmax
8 n" v% s9 U" p/ M( y* Y/ {2 e

6 `+ G6 ~3 P7 Y/ f9 [* [set-plot-y-range 0.0 ymax
5 C( m% c$ W9 f4 m. q
end: Z" ^2 i% B* B$ b( d8 l
; t) J; P2 \+ s/ {
to do-plots" s2 n6 c/ ]2 j9 I& n
set-current-plot "Trends-of-Local-reputation"
+ y7 S9 h. c2 K7 M8 w# \set-current-plot-pen "Honest service"  ^; l% V* t! o8 Z! T
end
" [0 {. v5 F8 M: z" F& a: g8 B1 X, P. s# c0 O; d
[ 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.4 L, f' U: W; C/ t+ R
& v, {* ~/ m5 ^/ U
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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