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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:( N8 O; ]- m+ J/ x: W
to do-business
0 t, P$ U: N) k rt random 360
$ \' }# v. U* L. P8 d: i fd 13 j/ L! o. z2 b' z- p
ifelse(other turtles-here != nobody)[1 V2 {0 H% {* W+ t! w- G
   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 D; X- z/ s- t. b# N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; F& d0 c/ K1 w3 b1 t( p# _6 w   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ n/ O( j& y& J
   set [trade-record-one-len] of self length [trade-record-one] of self
- g' W: f# Y8 V' ?( N   set trade-record-current( list (timer) (random money-upper-limit))- m0 ^( I: [* |7 J2 B4 C  V/ D5 k
3 Q1 \  z" L- e: {8 l. F! w  R8 U
问题的提示如下:
0 }$ T' v/ `& O; l' F5 J( Z; u1 X" i( b$ G$ e
error while turtle 50 running OF in procedure DO-BUSINESS
" j  B7 K" A; f. E  called by procedure GO. T2 N1 S5 @* d; q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.# u% j! Z0 |+ N
(halted running of go)
$ Y) A# E( U' Z! H; G7 e. s# l$ K5 C0 O( ?9 i- S- I. x& p
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~~) e, A3 L& R  n2 h3 c5 ^
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
6 I/ h# c7 [. [7 |globals[
* G4 \  _& j* w# r4 T9 ]xmax0 \/ ]" C4 a5 H# F1 F3 ]1 p
ymax
/ l& |. s. \1 ^1 Y# S  ^& }+ Zglobal-reputation-list) G) K0 S' [1 Y: @
% A5 a4 Z9 X! H: \! l0 J
;;
每一个turtle的全局声誉都存在此LIST, C& G' F. M& |1 e
credibility-list1 ~, I5 B) B" _6 V/ Z
;;
每一个turtle的评价可信度, g. P8 f5 o. x3 K8 N
honest-service
- X# m- ~* h( _8 ~% E& Cunhonest-service
: D- h9 a9 f6 c% V! Ooscillation$ y$ Y8 Q$ x8 p! T, A* V( ]
rand-dynamic
6 t0 |$ J" z4 F]: ]+ q5 }5 u8 I

2 P) T% O2 f; ^9 sturtles-own[
2 u! i2 K4 A7 e3 Gtrade-record-all3 D* {; Z8 @3 W# Q8 _
;;a list of lists,
trade-record-one组成" g3 T! G% j* F2 j7 @, U4 |
trade-record-one
+ Y' Q! K1 t6 F# Y( Q% [;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 M4 t) m- Z; o- T. ^
: y% x) O6 x6 F4 G% F
;;[
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]]
" v! [6 v' z  x6 e$ ?( Ltrade-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]/ O* }7 U- W. f+ @/ H
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list2 L( P: J# {. U- U0 ~
neighbor-total( x+ ]) G- h6 l- M
;;
记录该turtle的邻居节点的数目
' b0 v& [0 @5 ~! ^. X7 f- X% Rtrade-time
5 X. C; ?& R/ c& H7 a. z0 @;;
当前发生交易的turtle的交易时间
% C. W/ J% n! A4 _' `  e. zappraise-give% M$ ^* l! D6 d: {; r
;;
当前发生交易时给出的评价) Z: j0 l8 c( Z0 n( f  u; ?
appraise-receive
6 ^; C! r, [4 z% L) e; f+ H/ V7 l;;
当前发生交易时收到的评价' d# a, q. G( O- ]$ a
appraise-time
3 N" C* Q" h" ?( o9 K" f2 r;;
当前发生交易时的评价时间/ q/ V' o! D1 q0 G4 t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉5 B9 i$ p3 V- J& f! `
trade-times-total
% l4 k, J7 p& r5 \;;
与当前turtle的交易总次数4 O) f+ k9 r3 u, Z: L. ~$ x0 E
trade-money-total+ |& g% L6 m" L# l* o
;;
与当前turtle的交易总金额! K: K' F+ O8 |
local-reputation
1 n* K( ^9 s+ m6 m* sglobal-reputation! p: u- D% v& ]2 f
credibility/ R7 ~( O1 s! l1 H" c$ J- A+ L
;;
评价可信度,每次交易后都需要更新4 M% m# {. Y: Z* i5 Y0 ^/ W
credibility-all
$ k1 {/ K, e: _8 K- b;;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
% {' A, ]/ B2 x# E" M) W7 e7 @' C- Z3 Z' g  ~
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5( m  X% H1 A" ~
credibility-one( k& e( Y* ^* A3 M* t# G% M& y
;;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- `# k5 C+ q: s* _3 e
global-proportion
  M- p5 Q1 d1 ]1 l5 m  D* M5 Pcustomer
+ v7 l& h  G4 H2 ]6 lcustomer-no
: E0 j, V7 C' ^. h" Btrust-ok
* S7 Q- q, b( z5 B3 W+ vtrade-record-one-len;;trade-record-one的长度3 z8 V( w% r  D1 {% \
]
( p  S) L4 |" \! |+ {, ?( k* K
, u: Y& ]" N' F6 w- K+ A: p# `;;setup procedure6 x! e6 ^+ ]+ W' v4 e$ L  r" p
3 \$ c3 x( J# e. O  ]& c8 Y! B0 f. `
to setup: _* ~: h+ a& ?4 K5 r

! T1 |* K+ Z* w8 w% u, yca
+ u2 n3 m8 _  x+ u

0 F. H3 Z# B8 `: ]6 ^6 L3 R/ k2 `' ^initialize-settings

* j3 y* K+ T4 g0 I9 _% |" {! y3 ]; m5 H. L  `2 y
crt people [setup-turtles]
+ D9 q# Z% X, V9 B

! Q7 Y: W# t& g0 yreset-timer
% t7 b. o' u& E; H- {
" `, B. Q# E/ P3 e% a# B
poll-class
+ |7 N: h5 H, H. E2 ?- w/ |4 D6 F3 Z- R  [
1 n: O* v$ f: J% P1 f' w
setup-plots
# A; ^3 P1 e: {6 [! U3 o- K7 x
! E: s1 \! n+ ?+ ?* {) Y  Q
do-plots
9 h9 o/ u$ t: x/ C
end
0 @; ~; [+ |3 q4 ^" n# j8 m' d. [' U" H: H' u1 K5 I7 B6 I
to initialize-settings4 ^( |# p7 y5 U- M

5 r8 w: R" a& Jset global-reputation-list []

4 }( ?3 E% I/ q( u! F4 A5 F- P1 n% i
set credibility-list n-values people [0.5]

0 i" c, ]' [/ J4 z- F3 ^1 T) N* Y
set honest-service 0

( f# o, q6 u* ?2 X5 V
6 `3 h+ ^, u( O) Fset unhonest-service 0
4 R6 V! Q/ z, N. G/ s' |. ]( ^
4 `% Z5 n7 `* n/ V2 c( m
set oscillation 0

0 j- B5 k! B) o( M  D% O2 r3 O7 A9 y7 M
set rand-dynamic 0
7 v9 E1 a. ?9 o0 L- K( A
end8 f' i1 E/ Q+ l. u
. K' f/ k  ?; M) I* K
to setup-turtles
3 I+ _: J1 E: J# q0 gset shape "person"
7 j% \5 I% y- Csetxy random-xcor random-ycor8 Y" j& n, b; N. }+ `2 V7 n$ z
set trade-record-one []1 f7 N$ K0 W% y; ^
0 l( E5 K/ Y4 @
set trade-record-all n-values people [(list (? + 1) 0 0)]
0 v( T1 u; s- d' ?0 {0 j
: h# X( F. X& b1 z. w- d6 c
set trade-record-current []& O  @; y" x6 J; C% C
set credibility-receive []$ c" P9 Y& q$ @! G' Y
set local-reputation 0.5
) C: k! R. t, {0 |8 ^% I% D7 pset neighbor-total 0! w0 a) ~  h+ J
set trade-times-total 0
" j, h" e6 L" y' s) S$ ?0 hset trade-money-total 02 ^) J% i! s( Y$ s4 Y0 v! M; z
set customer nobody
/ R( R" ?/ P* N1 X( ~3 q2 kset credibility-all n-values people [creat-credibility]
9 _& M/ E0 u2 \2 ]/ Y  m4 c: W( jset credibility n-values people [-1]
" U' }# o% w/ F( c/ mget-color: M/ d3 W1 `) Q; k! S

. W, M; }# _( g5 Mend* }. @* a, _" m# Y3 }* [

- v; E; j4 z8 M  ato-report creat-credibility8 b7 I* H4 O  l2 n" q
report n-values people [0.5]
2 U6 `5 s  a' G  _1 m  iend; W: q. ~, w$ X$ q- O3 J; d

" t# n9 _7 h7 _& ^1 g9 V1 ~to setup-plots
* F9 L" ^' o0 b, _1 |6 g6 q$ M
: d1 ^$ f. V5 w+ L0 f! t6 m" kset xmax 30
; n  e0 v: c, y* \
$ G7 q; H1 ^6 Z/ ]; U$ a
set ymax 1.0
" J0 u( U) N% ~% O& x

- j6 ~2 s; P' `1 x7 g% Aclear-all-plots

/ s) C% w( p# m% W1 X* O5 y& q2 S& H* A! [& S# w
setup-plot1

, W: i! N6 W  F* a4 S$ }: _% g% U9 K0 G9 X, U3 T
setup-plot2

" {4 {- K0 k; [+ R; S' n7 E
7 X4 X7 @; p0 w/ L: K+ xsetup-plot3

* W+ t& A( o5 I8 Uend% R6 q; D& Y8 C8 d9 ?8 Q) Z

3 b  _& X3 U- X' D9 m: C" M;;run time procedures! Y7 R9 E/ ^! o$ p
2 u' D' x. D! l& e* L
to go
* x: S5 p7 Z5 D' }, R2 ~, [
$ N( h7 t1 b( Q* G: gask turtles [do-business]
2 {& e5 j7 }8 x  H
end$ R' d+ O: h, C

6 _& Q; K4 p" @! bto do-business
  R0 {' Q+ P+ g$ I5 {( e( ?( [! E

8 v% A/ p& Q0 n( |( A, d! k! @+ c& V# {/ z: Q' R
rt random 360
& b5 Z5 ]+ F( [( U& ?1 v6 Q3 H  l

+ B3 O: p; w. Y0 x5 W% }( _0 Ufd 1
4 a0 q5 t( }* ?% P
* S. Z  h. a, ^9 F; ]) W; \2 M4 C2 ~
ifelse(other turtles-here != nobody)[

4 w5 Z; H" c9 `1 P3 H' z0 r+ j& |( h
set customer one-of other turtles-here

7 d' z' O$ t! w% n3 }% U; h. }& |/ H/ C- I6 u% S7 L9 m
;; set [customer] of customer myself
1 ], G: u6 h4 T

0 Y  i* Q/ G6 z# l( Z( U# Sset [trade-record-one] of self item (([who] of customer) - 1)
, x' z" y  k6 o" F" D[trade-record-all]of self
; E0 J2 f  N9 E) g4 }$ O! g* _;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 B. _7 T# p* W: p. G. }7 D2 P7 A' ]- n: n% X. a+ N
set [trade-record-one] of customer item (([who] of self) - 1)
0 @/ d) y8 s) K2 i4 z[trade-record-all]of customer

+ W/ H# S' R# n0 {2 x6 ~& v- G/ H# W- e1 U/ C
set [trade-record-one-len] of self length [trade-record-one] of self
. u! A$ n# ], P2 ?/ V
8 k* Z4 D4 B6 V' c
set trade-record-current( list (timer) (random money-upper-limit))
9 J" U$ d( S/ j8 _+ {
$ q' U# k6 B% ?0 d
ask self [do-trust]4 Y# Z: P% r7 @0 a+ f
;;
先求ij的信任度4 F! W& z$ [: H7 ~$ \2 y

+ X- {7 u' V# q; D/ D: I1 Kif ([trust-ok] of self)' v2 n9 j; i* s$ a
;;
根据ij的信任度来决定是否与j进行交易[8 ]4 N) ?2 ?8 ?: L3 R# ^% ], Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 \  Z" A% \: f  }3 N
: F* q3 J; j& `) G0 J[
2 B- g2 x/ u! b+ r: u; l
+ I6 c. t7 G+ I) L" a* E
do-trade
4 C4 E1 A4 s8 V. ]1 Y7 L5 Y  H
3 S8 |% P: Z; H9 j  Z, @
update-credibility-ijl

  }6 _: g$ ~$ U7 R1 k' J* _* j" I  \. M
update-credibility-list
. f/ w/ D& O  L2 _# P+ v/ ^% `
* Y7 ?  k$ g4 h
$ `' y0 y9 \: @! i% r- U% @) s
update-global-reputation-list
  T# a. y& C) l7 C( H8 ~
3 r  ?& n; {6 Y9 f7 c+ Q; F& V& n
poll-class

! ~3 e; \  k' {1 \2 }* [- p/ ~: u4 }2 Z: I$ E' s+ m
get-color

  B- V/ j: Q7 b/ t. |: C9 n6 R6 |  O
]]4 ^; P' D: R: B5 j) ]

' J" M' x; u) S: G% }' ~0 _;;
如果所得的信任度满足条件,则进行交易' P0 |- Y& \+ w- F  O/ |1 A* u* O0 P
4 @: T% a% \( h9 k$ c0 g% s
[

( Q/ ]: U1 O7 Y5 Y3 y, D% l2 H9 S8 A& A$ o7 H7 a: d
rt random 360

; r1 l" Z# T# M) _7 J7 {  f$ A3 J$ J2 X) n
fd 1

* L  d, K0 H0 a- v9 ?% _
  Q, ?  z9 v. a0 {]
& u- o) @3 T8 P6 ^! P+ _

/ k7 K$ o- E' G9 ?* J0 Q# L* @3 @end
5 N7 d8 \5 ^- a
3 b. ~* ]# E' z1 R7 U) y
to do-trust
7 T. L3 t! P, yset trust-ok False
* [8 O' Z" {$ u& ]* @
) @0 _6 F2 D% u4 e
/ y1 u: v4 l/ Y  V. k3 p; H
let max-trade-times 06 G- q  }* X7 y1 J4 D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( g6 m: R5 R& V% n' O9 Ylet max-trade-money 0
' t* C+ }4 A' [! h# a0 y5 vforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' Z: I' V" v- R% \" K, {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# i3 k* r6 f5 j" l, o" y0 A$ w% s; O$ `" Y
$ t$ c5 b5 O3 a
get-global-proportion
5 P7 {, H1 R) }; T; W" ylet trust-value
; N) S  Y; D9 V: n: Q& @: Qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 w- Q- q5 m0 O6 ?/ O" wif(trust-value > trade-trust-value)8 A% }3 m4 D5 ~: v4 y- e: V
[set trust-ok true]0 q# A. Q* t) f. L- U# D
end  }& u! B* ~6 ~7 v2 J" u" r

( v% K3 E( h% c5 G2 N9 B$ B! ?6 J- Nto get-global-proportion$ p- B, P; Z) Q" v* D; W7 ?
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 C5 r5 C. L9 k: F0 w' {/ R  i[set global-proportion 0]: c7 @. U) k1 Z+ K6 F* I
[let i 0
& Y5 w: y. J" K% z8 ?! k8 ]let sum-money 0
, Q2 r. U! @' R4 }, owhile[ i < people]" ?5 l' S2 T% c
[+ N3 t7 J- F+ B$ z* T9 h
if( length (item i
7 g9 Y+ C. ?( D: N. |- u[trade-record-all] of customer) > 3 )
: c: j8 M! G& I5 L5 @$ B
[7 ~5 J& C/ i, S1 f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 h0 l. w5 N" z# d. Y" c9 S1 d+ c
]
* ?; n( S! m0 ~) s+ ?" s- Y]1 Y" K# n  r4 t5 r  ^( P
let j 0" `9 F3 A, X- T/ H( A9 R
let note 0
+ u  K0 Y( U3 Z9 Lwhile[ j < people]
' b# n) m  D  q% s[
0 a$ ]  u9 S  d- G& Lif( length (item i
0 j7 L8 O7 g5 j[trade-record-all] of customer) > 3 )

( U  @3 t. _. v$ }. H- F[
/ d. i0 s! l- Y+ m* l6 q4 gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 W' {) i1 F  I5 v5 i4 r: S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]3 F- Q4 n0 N1 {1 o3 B" P& K+ E  ?
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 G+ L  ]' D2 K/ a8 g5 l]
% o; i- i( `- x' {1 s& A' f]( b+ R: R- z( q6 r% u! ]9 c( g/ j: H2 ]5 J
set global-proportion note2 F* x6 E, i7 a6 l. j
]$ ]+ k5 {% g4 F1 F# k' a6 j
end
% r4 I$ c' A5 P0 D6 L# ~  v/ h
6 s# c2 E# e2 [8 a: j1 dto do-trade
/ I; H  X) S2 ^) o;;
这个过程实际上是给双方作出评价的过程
3 S  w9 W9 x/ J& I( @set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; A( H  F8 e( W3 @  ^4 O$ oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- K  t" e: X! H1 o2 a
set trade-record-current lput(timer) trade-record-current5 B1 d5 D. p' Q. A- g' _
;;
评价时间
: K  N" U- |! Pask myself [
% L' m" s* i+ \* P" Q7 supdate-local-reputation
' k4 p/ @5 d$ J' M: k9 ]+ cset trade-record-current lput([local-reputation] of myself) trade-record-current
! T  a. N( p& t( p5 s7 d  M! p% G]
- M8 h; U, E  P1 x2 R. rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 {; L2 l4 }  e2 Q$ q;;
将此次交易的记录加入到trade-record-one$ n4 J3 V% F1 T
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 P3 _0 \8 C5 b  ^* ulet note (item 2 trade-record-current )9 {) m7 B9 t! B0 m. c
set trade-record-current9 ^3 E# a. H* }$ v" g7 H* U9 F
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 q; p0 K. H% O0 c  M
set trade-record-current
1 [1 y% u/ v# R# q(replace-item 3 trade-record-current note)2 `- s/ n: G' ]5 n

& s* V0 i) L+ A- p& P
! J/ @0 k8 l1 g* x. v
ask customer [: w$ S6 C" Q$ L# ?- d$ s
update-local-reputation6 |. O, b* ~# ]
set trade-record-current
6 h' d( h% i6 M4 c6 |& |, M% R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 e9 K' k. {+ z# [  a]7 N3 s0 p- _  N% v; Q8 W! F& \3 M

% n+ m9 w- w# J  ~( P

7 W1 j) }, K- E/ j9 N% u0 Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ D8 F: o6 s8 q9 B2 M
& R/ g* J- n* D% s( z/ F6 E9 f2 n
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 u0 Z) B/ J1 o: b
;;
将此次交易的记录加入到customertrade-record-all
: x: T0 t3 ~7 j' @9 L; \end. T# [- y, C) B8 N0 r; H
- v! q1 f0 s7 H- M- F
to update-local-reputation9 K* H" n9 Z1 Y! K4 j4 a
set [trade-record-one-len] of myself length [trade-record-one] of myself
2 L, t  p! G* ?* x* M, \/ t5 ~+ u  E' M

% }# k3 L  n+ g. d;;if [trade-record-one-len] of myself > 3
/ G+ M( M+ _) J+ Y* u8 o
update-neighbor-total
! v% K- R  h$ q" J$ V' O$ {) [;;
更新邻居节点的数目,在此进行7 g9 @: @/ E, E: ]
let i 32 @" E* {! Y, R' j/ r4 c
let sum-time 0
5 z1 \# h4 E# o6 j) ?. fwhile[i < [trade-record-one-len] of myself]4 q( e3 R! I7 h/ @/ e' F; z; |
[
4 n- m  \: J, X2 L$ R6 L- z( @9 f4 n/ R& [set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! t5 k1 p3 q, }  J4 aset i3 o8 J' V4 S$ k
( i + 1)

  T' b/ w+ c/ M- l( @]5 P6 ?: g! c9 R" ~
let j 3% Q* d6 l* w! M
let sum-money 0
- o7 Q# ~6 [* Rwhile[j < [trade-record-one-len] of myself]3 B+ j! s7 Z( ^; W0 C8 H
[% r  `1 q6 ]# ~) e6 W/ o: g
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)
4 `1 ~) \$ q4 y5 ^( x) ]6 kset j
% x: I7 z0 k$ P4 u( j + 1)

5 ~* X% I/ z$ @# ?2 b: d, }$ L6 []
# o: P( u2 @( c# ]let k 3) \: k( b% |2 c6 Z
let power 0+ i& |: y/ n$ L: u! o
let local 0
" o, p( p1 ]9 ]7 qwhile [k <[trade-record-one-len] of myself]
$ Y1 g5 I, E; {" m2 J" q[/ n% P, M8 ^9 ~: a1 S
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)
; U7 {. v; M* B. f* l/ w9 ~- Y: |set k (k + 1)
; g3 w; v- d# d0 R. Z8 z]: c( y" e% B$ T3 ?  _
set [local-reputation] of myself (local)
  E9 Z; P- q* send
$ ^$ d' O4 q$ h, s& ]4 q+ q6 R& w% B  w! S6 c7 M* a4 [
to update-neighbor-total
6 |5 ?6 n' {$ {- p6 l' H+ Z; |7 E: r, [3 n( z, G  e" I& u+ a+ Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. c- N4 a3 J0 q# W1 R  t4 W! d/ x

4 J7 W& `. J' O
- r: E3 j8 Y' E: q
end  D/ s' f3 o- E! p9 Y( H- W4 z

* i- ?3 m! _+ B. n# [  g+ cto update-credibility-ijl
" ^; p4 _" M5 Y, n" D9 l& K9 n! k$ {  x# G
;;
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。
$ _( O" _8 D7 }2 v% v# flet l 0* D8 l6 J* K( R) g% ^7 Z: \. f+ w( j
while[ l < people ]; K8 ]- f1 \7 `6 a7 g
;;
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% m& z4 k8 ]  q7 F5 e( W
[- A5 `  y) ?1 P% ]  R
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% ~1 E* g4 m  Mif (trade-record-one-j-l-len > 3)
' O8 k4 D: Z0 R0 a$ ^' U. Z0 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-one3 f* G9 x; `' i+ g! K. U: A
let i 3
) Z4 j9 B: ?0 p" vlet sum-time 0- Q* Y# ?  c* U' z2 U2 v
while[i < trade-record-one-len]% u  M( p4 Y; z: [& c! {
[
( U" o4 Q# V3 W% R2 tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 R1 V; D% e- a; Gset i
* }8 x/ l2 C  \+ k5 F+ R( i + 1)
. b6 g0 h+ k% j8 n# g1 [  p
]# U6 n; }9 D# h' o
let credibility-i-j-l 0
* J# y( G- N7 R* W+ ];;i
评价(jjl的评价)
  l3 M7 {" p* P0 K5 Hlet j 3
7 K& W4 |5 P1 U1 ^( N7 Qlet k 4
3 w, U7 y1 X/ T% n( ^0 Ewhile[j < trade-record-one-len]! Y$ ?% O1 }$ m
[
7 k# s6 \9 N: owhile [((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
. M) |- h7 T! h: V  t! w0 Fset 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)
; ^) ^0 f% |# f9 }5 e$ C3 T3 Mset j6 E0 D3 `' c" B3 @
( j + 1)

& r' b9 E: m7 g+ Q) H; I]* `1 u5 |6 @- ]
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 ))
" d5 c: ]+ o4 A( ?  r! ?; Y% J/ R9 J5 c& _$ d

7 l; c4 D: l9 J6 v5 qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 |5 e. A' p+ I  X6 V. M
;;
及时更新il的评价质量的评价7 g6 o2 r9 E0 M0 m7 D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ |7 x' Z' p9 d4 `) Q5 {. [
set l (l + 1)/ S; B- Z3 A# S# z
]
0 f; o# T2 I6 q) yend
) C2 {3 o* B+ D# z/ `" Q
' q' Z. P2 O2 p( K- T+ u- A; q+ {to update-credibility-list
' s9 j4 F8 l" X5 klet i 0) s3 X: M8 O% d0 [. ?1 P5 P- [
while[i < people]
) i- p; O+ W8 x/ U$ a7 ~% Z[
  q! {4 B- C# Z1 Mlet j 0( O. i' w* w! O) _
let note 0
" `: C$ I; F& ^9 Y+ }let k 05 L4 m; p3 V  ?9 e" g0 ]! K, w
;;
计作出过评价的邻居节点的数目
% N; L; h* X* k' [6 a4 Ewhile[j < people]( m6 y8 ?2 d- u+ U- z* F4 d
[
" J, ^2 \. q9 N, Yif (item j( [credibility] of turtle (i + 1)) != -1)
5 C% o: o5 e, F: N' a" ?: I;;
判断是否给本turtle的评价质量做出过评价的节点) z& Q4 k( s: ~8 [
[set note (note + item j ([credibility]of turtle (i + 1)))
( F! q5 h8 o' ^2 U+ r& _7 X+ b;;*(exp (-(people - 2)))/(people - 2))]
% y$ a. N  R+ N9 B2 n3 Q. r
set k (k + 1)* Q5 ]0 B* U5 ^. G' Q3 Y
]& L0 ]" R! d* }( a& Z3 {. S
set j (j + 1)
! Q' f& w( x( y& ]1 |& R]
9 o3 ~  x' `1 i) N9 u( cset note (note *(exp (- (1 / k)))/ k)5 c5 l+ L9 ~, U
set credibility-list (replace-item i credibility-list note)# N0 @! r/ ?3 m3 q) @) f
set i (i + 1)
2 j& g1 T: ]; d$ |3 H* Z7 i]8 N( e, }9 m: [4 L  N/ ~
end
. B- R! y! d3 [) s; Q/ ^4 X5 z5 v$ F, ~& }) a  E0 ~$ r+ P
to update-global-reputation-list. }0 ^: b* r; H8 t& q
let j 08 A( y8 T/ X$ ^" Z6 @; u
while[j < people]: g0 m4 l( @1 G1 d: u1 f/ q- d0 c
[6 s, f& r0 S4 ~/ [$ X/ h
let new 0! u9 M+ ?- K8 F& X
;;
暂存新的一个全局声誉
1 d  v( Y) r" alet i 0' R! o- l+ R" V/ \
let sum-money 0
) o1 V5 w  v7 j7 @( |* O5 C* T. Glet credibility-money 0
, q. r! [6 C0 G/ b5 F# _. Mwhile [i < people]! t7 w# D; K' q8 a
[1 R6 u9 N0 |; c, {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% v; @  s& S+ G9 H' }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" S  D4 t, v% X, Q; v+ L
set i (i + 1)
7 v9 T" l" n6 I6 e6 x7 m]7 ~! ~2 x5 d5 p8 T1 M
let k 0
7 j, m% N0 E' n" {, f9 }5 Klet new1 06 R3 [0 Y( {! i  `: n7 P* j# f
while [k < people]: `/ U: X) Z' E+ U0 B% d& B
[
/ G. H7 q1 a" e  h/ S3 Qset 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)
: S+ Z/ H1 c/ Zset k (k + 1)
- _3 z" |+ z. K8 p]
6 A7 m* H& T! ?0 M5 h( W& A- Y6 eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 {. @: C! a: L) x' @set global-reputation-list (replace-item j global-reputation-list new); N& I" ^/ a) M$ r2 k
set j (j + 1)
6 p' ~& V8 L+ a+ E]+ V* P1 j; W8 o8 |) Q; A
end  z( m. |. Q' d0 ~1 [2 x
9 g' b4 z! ^6 s# a& A# [/ B8 _

2 Z# O# @% u7 }8 D
! I; A4 l, a2 ]9 A# ~# @/ hto get-color* U8 s: u3 A: N5 U3 m

. i# F. O; k  B* y+ h* Eset color blue

, A# K: z. C& c6 Iend
. I" c7 V& U1 z3 S- e
! f: w: s) P8 j- Z! vto poll-class# l. M. L2 b) H5 F% F( R1 l
end7 P, G# k% T1 _5 @! `$ @
' d9 ~" |4 L" Q$ C! m
to setup-plot1. z0 p9 \4 h1 j0 J. P4 f" W: W* C
" e" U" I$ \7 @. j3 z/ t2 G3 x
set-current-plot "Trends-of-Local-reputation"
* j/ k, w! r' ^' q0 L6 f

  X! e8 z- ?9 {& n; [set-plot-x-range 0 xmax
- X" ~: f. G# B8 Z' R( p

( d, V2 h) _$ V9 a) U0 bset-plot-y-range 0.0 ymax

  U5 n! S: g: n- `- K5 lend
# {- |1 }3 j9 R; P9 \2 L- c# |: ]1 b9 x
to setup-plot2! }" g, K) B7 `# Q

8 W+ E, O. r, T% ~2 V7 p) W) Eset-current-plot "Trends-of-global-reputation"

2 P5 F) U1 U" X5 E1 b
9 v" |, L) f& u1 h: Q: Z  Gset-plot-x-range 0 xmax

5 [) Y) E7 h9 S" ~. L5 ?: i- S, {) e. V1 z% V; B+ ~
set-plot-y-range 0.0 ymax
% p# @% a- \. a+ M0 k7 h8 q
end, a# P+ `- p) Y: J: l" w6 c* I

! i, @2 z# u6 g7 N% E! P& D) Bto setup-plot3
* y4 r2 k% L6 J- ^" t4 {
3 y. {8 C4 a7 T6 }set-current-plot "Trends-of-credibility"
; W6 C( d* G1 T6 ?/ N: c. b
  O2 m8 d5 G$ Q  i7 b8 e! T
set-plot-x-range 0 xmax

/ |3 |+ D" [* U0 o, b2 b" @* d  j
set-plot-y-range 0.0 ymax
: S$ |- E* I$ F/ W* B
end
% v6 j# P/ H; j2 S" m, I
# T- _7 S5 k; h9 H: V" W- A3 k) ]to do-plots
) u* I4 \9 n% Y* F8 R+ w) o9 [set-current-plot "Trends-of-Local-reputation"5 C$ U" [1 P/ }' Q' K% p: r3 }/ R
set-current-plot-pen "Honest service"
3 n( T6 e4 [8 s7 ~! R# zend* ?9 F: m  d5 H; ]! r% r  t
& T% L8 i( |0 O' F( S
[ 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.0 a/ T1 H, u' c7 l
0 p! s0 z  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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