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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:
/ X8 [4 J) f5 m$ b: Z4 zto do-business 9 H( m! _( h  `$ K
rt random 360
1 Y: G! ~* l# E! m# B7 T2 Z( J3 P fd 1
9 u, D6 ?3 L% \5 E  e% E. ]' ^ ifelse(other turtles-here != nobody)[
  |! c# V6 r. f) |& Z+ 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.- q( ?! u' e" |" n  e2 L2 f9 O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * B+ h5 n, ~5 r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: x* c& e9 ~9 W6 c2 Z
   set [trade-record-one-len] of self length [trade-record-one] of self
2 t" y3 X' j% m/ v/ G: m; c+ V. u   set trade-record-current( list (timer) (random money-upper-limit))
: C( u( C4 Z( l! Q; j# g. z( t- Z7 ]& `5 r* P2 P
问题的提示如下:
( z0 `, S* c2 d2 e0 Y/ ~5 J
" S! l% W" O  W% _# l0 x& I0 aerror while turtle 50 running OF in procedure DO-BUSINESS! M* C# N# ~) r5 c" A
  called by procedure GO
( ^( I8 x4 T- T! p/ |+ H( T9 qOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 t" k( J: D' t6 G' D! U
(halted running of go)
' g7 ~4 {$ G! W8 A: H5 k' A: [, X: j2 H- B& t, w7 |! o! S
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~~. w8 ^% b- D) A$ \  Z
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  t# P4 y. n8 k' A. E
globals[5 [7 G, j6 ?% p) N7 s& |
xmax2 {, d( U) g# E; k+ N* m" r' g0 x
ymax  U( D* U9 w  S5 Q" O0 m
global-reputation-list( k2 y3 ~0 @. ~# i' ]) @" ?2 n6 j8 u

6 V5 @! l* v. y7 `" w4 ];;
每一个turtle的全局声誉都存在此LIST/ Y) z- o& O6 o  o3 r
credibility-list
/ a; |" P8 N3 U. Q;;
每一个turtle的评价可信度
" f7 e6 [$ z$ H& |/ shonest-service. M; W3 c' e: o0 {
unhonest-service' i7 _* M' A! V- n
oscillation
" U  i# {! m/ W9 R% |rand-dynamic
' o, w2 d# K9 ?$ |  J, o]# X2 @/ K+ S% ^! }1 p

- x# u/ T0 N6 x! B4 ^9 Lturtles-own[- b' X* m$ t  Q$ y6 i4 L2 v9 V
trade-record-all
0 }9 R9 A+ Z$ V3 j;;a list of lists,
trade-record-one组成8 O% b& M1 q, p+ L: B: u
trade-record-one+ u$ L5 P$ K/ I9 d! A
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  v- i; Y" ]# d9 ]) ]( c9 j, J( w
5 L- K+ z7 Y4 `;;[
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]]* L2 H3 ?6 k  i1 \+ K9 q; ?5 M
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]
, m1 C3 g  q6 O- H3 j5 `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
: v5 J9 z' C% W# b( Kneighbor-total
- d8 r  k$ F! @;;
记录该turtle的邻居节点的数目3 n5 b9 g3 D' z) a* ]% z$ m  t: _7 O
trade-time
! z1 W; a$ s* N;;
当前发生交易的turtle的交易时间4 T3 l# V7 S( z: ^& V* v
appraise-give
0 E8 ], X0 V- H0 _( R1 M0 I;;
当前发生交易时给出的评价
! @% k- m% |# q' Uappraise-receive; T1 F6 I2 F" L. b) g8 ~
;;
当前发生交易时收到的评价
2 n# T2 \) r2 t" h! y! ?appraise-time, T! ^% n+ ^( s# S" v
;;
当前发生交易时的评价时间* u: N! E& ]9 j) C+ i8 ^+ x8 R1 D" T5 D
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ x$ U) t0 n8 W
trade-times-total; L1 D2 B. ^9 ?. @* B( |$ d
;;
与当前turtle的交易总次数
8 {2 l7 F  o& D& F8 Mtrade-money-total& C1 c2 ~, X: Z7 R
;;
与当前turtle的交易总金额
  S( p6 ]; ~4 Ilocal-reputation
( f* [7 a* F1 O7 Yglobal-reputation& k. s' s9 m4 I- R8 B9 u6 t
credibility
: P% d( w- B5 `0 U4 H;;
评价可信度,每次交易后都需要更新4 r* Z) S4 U6 a8 S
credibility-all3 M1 _% h2 y, c0 E8 w$ W" D
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据3 Y4 B9 h4 J. ]2 I! @; P! c5 k

) W7 Z0 c  Z4 L" ~( Q2 \3 w;;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
! K1 Q) e2 H! ?; ncredibility-one
8 k6 p2 o9 A9 w/ m;;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+ Q5 ]+ Z* q+ D; B: g
global-proportion
1 E2 [7 F! ?; Q0 Q0 F% xcustomer
) j2 ^- i& e; I: T2 N, z8 Q4 Acustomer-no" {* m2 j( O% D1 I- {' Z
trust-ok+ x7 [. C+ b9 i6 ?3 j
trade-record-one-len;;trade-record-one的长度
+ f" E% [  T7 }3 _' T7 l/ e]
1 l9 W, i( r) y( {: ]% P5 {2 d3 Z. t1 E: U" y6 F
;;setup procedure
, F7 f. x* C9 ?- t3 @. u% s* h
1 m# l+ u. t9 k8 R3 ?, g0 O- @- yto setup% a0 ?4 I5 {0 Y
7 F! J7 w; c2 u3 h* I
ca
2 P  x1 D5 ?6 X' V6 X7 {% C
1 M0 r( W: u3 C. W! J; M
initialize-settings
$ F# u" p# _$ [7 k" @
4 e% W) [* \% M  k
crt people [setup-turtles]
, t3 V6 [: Y  E& d8 G
2 g" D1 w' `6 B/ F1 z( c- j1 a/ t
reset-timer

7 X+ h" ?. {( L7 A/ L( D5 P  H- r1 R
poll-class
% R/ D: L4 k+ g6 T( b2 P6 c
4 ^, ~/ H5 y' f. a- }" U0 m! p
setup-plots

2 A+ ]3 o% k% h% }; j/ S- R6 P& i: r: K9 D; i
do-plots

4 s4 d' H% c# K4 b- \. bend
3 [5 Q. a8 y- p, E: H4 S$ T2 j) |6 N# x, V# C
to initialize-settings
" ]3 c& ^+ a! K0 F0 p* D  I: F2 i
/ w& Y8 T: @1 a5 H" hset global-reputation-list []
0 d+ p/ t& i$ Q1 J2 c( \
  ~& F4 Y  G$ _
set credibility-list n-values people [0.5]
4 u4 g' @- s: h# y
3 @7 Q! x  u% J  l% H9 D
set honest-service 0
. B) Y  i. c2 @  K! X1 w

) Q) N& [1 s4 w4 R  qset unhonest-service 0

2 H, a# ]9 G4 D/ |
( N* s# l2 r) c% M# ?0 tset oscillation 0

* ^% q( {; a0 u! x" R- M
8 Y; P6 U0 I+ ]  h: g5 hset rand-dynamic 0

6 d: N1 _8 [" c) h* Pend
/ ~/ L9 z% P; h$ ?1 b6 Y% H  H" |
to setup-turtles 0 u& c/ Z5 D" t' U( n; |
set shape "person"
; R3 m4 W$ @; U0 rsetxy random-xcor random-ycor
. e; [8 E6 G0 k6 }' Hset trade-record-one []% ^2 F/ O0 u$ U" H5 n! u" X& O
- U* F1 G  ?- S1 f3 w6 J& M
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 g6 l3 O$ @' y* Y/ e9 g. C
& y9 K* o; S( I8 V
set trade-record-current []
) [( e% l$ P! Oset credibility-receive []
; }! D, H' V. z+ ^& W4 ~( Rset local-reputation 0.5
. i0 e* }6 N) b) Eset neighbor-total 0
& `; h2 Z; z" d; f: _+ zset trade-times-total 0
3 r; W& W; z3 x1 q, D% {  Xset trade-money-total 0
$ ^, b4 l& [; M* H* y- @set customer nobody
5 m, |2 U; ]( ?( O5 Q8 I" \set credibility-all n-values people [creat-credibility]4 J9 G- D/ J+ |2 r0 G
set credibility n-values people [-1]
& U  r- T, N. T1 a4 aget-color) n: R2 {& ^) L; }3 B
) o% B2 N1 Y, q# J( V
end
7 _% ~4 k2 {& m+ y. P2 J8 K6 C3 }
! ?; B+ t! @& J6 S& A# E! uto-report creat-credibility% a. X7 @0 _4 r$ o' {# g
report n-values people [0.5]: ^' p5 f. ]  ?' n0 k4 p# d
end
) d' W+ i( B# I& e- ~% Y+ R$ ~
to setup-plots  y9 V+ H3 P* r# z! A6 R
3 h+ Q9 V* T! Y6 \1 t7 j3 A
set xmax 30
4 X. O5 w. y. \4 E7 N) u
8 V9 _/ W( P, y
set ymax 1.0
. ^/ j1 Z: Z& o# x+ {+ A" }) h0 P' Y$ V
  q# ~0 H2 }# N
clear-all-plots

# r$ r/ b& R, @, }, F' r
. G& U/ N6 s. v  B7 s* u2 lsetup-plot1
# U1 A; i; T/ X1 T& ~# T

: l) y& k( e+ z/ V. i% zsetup-plot2

$ l" p7 S! b" T# o' A5 r* o" @4 ^0 ~/ D1 n, Q& @! _
setup-plot3

& a5 F( W1 {  g, o9 xend
3 c% p/ U% O; Q, B8 A5 p4 s: x/ I, P' h* }5 t
;;run time procedures% L8 _  C1 T+ ^, @3 N
1 E  I; P/ |8 K- Z
to go
- K- b# ^3 J0 x" m! M; W
) R1 Z2 S/ j: Uask turtles [do-business]

  O* F2 t* N, ~. f" d4 N: rend0 o" {; g/ w: j, g& v. o
9 m- C; R8 D8 F5 ~4 Y
to do-business 5 Q  m9 f6 z5 `5 u: ]6 c

: T) m7 R3 o- R. m
3 k* ]! z& U0 G$ o0 a' ~8 g$ art random 360
* K5 G9 }( @$ @5 i$ P: Q
+ C) V, D+ ^+ C1 h+ Z6 _8 m1 H
fd 1

7 Y- q& o" M/ ]; s# d8 q% I8 b5 V+ B. C: L& n+ A  e
ifelse(other turtles-here != nobody)[
% {' K  a9 k. u( z6 w0 w; Y& q
& ]% H% h1 O& d& ]+ A$ x3 q
set customer one-of other turtles-here
3 a* x# P  L' T9 ], T* S8 \1 @9 m0 J

3 Z, S( v# F6 g% ^;; set [customer] of customer myself

% U% Q* a9 R* E8 h8 w
  H! p3 o  T  V; |: L& xset [trade-record-one] of self item (([who] of customer) - 1)( s! s6 K0 ?" Z3 E- _- k; E
[trade-record-all]of self
6 G, i! \/ d+ k3 r6 y' L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% t8 O$ w/ G- f$ H

7 [: E' T% g6 }' h0 ?/ C8 oset [trade-record-one] of customer item (([who] of self) - 1)
- @- k9 i+ H8 o( X[trade-record-all]of customer
& |2 d) K! S! p3 |: a3 ~7 L

% ^  }6 P3 d0 vset [trade-record-one-len] of self length [trade-record-one] of self

0 r2 \# P6 ]  s; C
# M! j9 l% G. i1 y' q& Nset trade-record-current( list (timer) (random money-upper-limit))

/ c9 x5 ]4 V3 `- f
5 {' C1 k4 d) h  ~, j( a! rask self [do-trust]8 K  M+ O" }" S8 n# I* b
;;
先求ij的信任度) r/ e  `* C7 P- L
: l# `+ j/ W, t$ A3 K1 j# z
if ([trust-ok] of self)
( ?( z* Y2 p) V;;
根据ij的信任度来决定是否与j进行交易[
6 e# B. t; K& e. Y# B' Y5 {% nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself7 Y5 I" k5 m, ~3 L8 W* v/ Y

. r- A1 D( y; o[
. n& b3 X6 q7 P; k# e( Y2 b
: t& P& B3 g2 Z+ U
do-trade
+ q( O* c5 A7 ]6 R+ D9 i
- b( C' r: v3 ~5 U5 K) {" S
update-credibility-ijl

; E" y9 |! Y, q9 d% Z  k; ^) w0 g& Y5 Z0 \
update-credibility-list; X' {" r- ?$ Y
' [, i& ^' l- Y$ H2 J2 w
2 L/ J  j$ A' |1 S' e5 C3 K
update-global-reputation-list

% @, o) Y2 t' B, a1 H. f+ P# v! m0 q, T4 G
poll-class
8 J4 W4 Q( }2 `: Z: z' |

% q5 G9 N8 `4 O: G. [get-color

" g- G' T* n" P$ L6 ]/ ?+ q; ]# x1 A8 P0 n6 F( f$ I2 R2 ~2 ^  P& a  z
]]* ]3 [$ ^2 X1 j% y# z9 O( o

( y, I/ @( B2 Z; t/ s* T6 A; s; S2 z;;
如果所得的信任度满足条件,则进行交易
6 @% s& P* c4 S8 S" A4 N0 y
; p  x/ E* D  K[
0 f: A& {, l( n: V( a" j6 a. `

* m, X: w" V6 m( F5 _* `rt random 360
- S0 N+ R. C' ^( H/ C

4 h  ^5 N  a6 V: R6 N  Qfd 1

! s( t6 S/ k$ d, a: H0 I  `, G& E+ x, a
]
$ r, s* Y3 t3 D
8 P8 {3 y: k& R; [" @9 F
end
. u; t7 u9 |3 Y% A
. \; [4 D* j: ?3 i4 \$ `
to do-trust " r# i6 h4 a4 K6 k# H( I
set trust-ok False
' Z% N5 M+ C1 j) j( u; |; C, Y2 D: @5 d

* h0 |/ [! K4 U0 Blet max-trade-times 0$ `$ U6 g2 ^* k. m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! I( W. P$ u( m
let max-trade-money 02 }9 X4 K1 p+ m" t
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], g0 F4 Y6 i4 e9 [, d# I
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ d+ q" \7 }$ j9 d4 `* ]
) B" t$ Z7 d2 f7 |1 J- q5 f* T4 k

9 b+ }* K% x# h0 p  X! f2 `get-global-proportion9 X' Q! q. K/ Q6 p7 C: |
let trust-value* B+ G* n6 N" ^3 N1 x
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)
! R4 s* S+ C5 s$ b% Q
if(trust-value > trade-trust-value)
- s4 b# p& d) k* O  w[set trust-ok true]
, C0 {7 ]0 T: P6 Z/ j0 cend5 W) d5 C+ j# _
0 x$ B" a% \/ g- w
to get-global-proportion
, u1 w" C9 Q4 z$ ?% K( Lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 g: r  ]# O' M% ?2 [[set global-proportion 0]8 w+ g1 w4 h" u* {" P1 u
[let i 0
. m% e% i6 |& E5 \% D( o6 mlet sum-money 0( T2 ]$ J7 [/ J4 W8 j
while[ i < people]
! F/ o2 h1 A& w[
) a4 Y3 K5 i9 zif( length (item i
; d: E. k5 ]! K" G[trade-record-all] of customer) > 3 )
8 V4 G9 _. T9 F- x3 g9 |
[/ z/ m( ^1 T0 Q, ~+ S! T1 ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 W* c7 F) R9 q' u
]2 Q- N% t3 {% [% ]
]
+ Y, E% Q, U2 Flet j 0
3 E) J% a+ \, I- m1 X4 Wlet note 0
/ b  F0 p& U& `, d" k" n! ^while[ j < people]- q% a5 ^! B/ v6 n% Y: P
[: F. Y; w2 S; a5 Y1 U. g$ a
if( length (item i
) G  }1 C! n6 ]/ N[trade-record-all] of customer) > 3 )

0 n) t  Y1 W. N+ @. u[
: W3 A; @  Q* x0 q6 a" sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
8 N5 @, e6 g3 y: N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ p" j/ c! S5 r  ]( F: ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 E- l+ H4 N6 c]
2 F: [9 o4 S0 j! []  w8 r9 p3 q, k* @) r
set global-proportion note
" `, q4 j3 G8 P, G8 r]
( ]1 S7 p8 P8 iend( `) I2 U! e- M4 _7 [) a$ l
: Z0 |, q3 \7 [# A6 t
to do-trade5 e2 p9 o* q5 @$ x. N+ u
;;
这个过程实际上是给双方作出评价的过程
# v- U" e, g; u$ w  S# Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& F5 n1 _5 h, \- t  M" V! Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
, e9 v' ?. m% m( J, ~' _+ Aset trade-record-current lput(timer) trade-record-current, S0 |$ B! W6 A3 _/ ]! P5 R
;;
评价时间0 E' k) W! `3 U
ask myself [$ T7 i% {5 U- k! T, T2 h
update-local-reputation& [  T" \! A5 n9 a$ |/ |
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 L' m/ }' T# ~5 e9 G" ~]) n$ |4 \  C1 t+ M! N% K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 [6 X0 f% j& W; G% X' V5 W;;
将此次交易的记录加入到trade-record-one0 I% U7 X4 p1 t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: C$ |7 W; a+ W" N& b+ Llet note (item 2 trade-record-current )2 t' F. P0 P; ^+ z. g4 ^0 c  ?0 D  Y
set trade-record-current  C" L% I) t+ u* b) j, b
(replace-item 2 trade-record-current (item 3 trade-record-current))

  D/ a" P% U; vset trade-record-current/ X( \* P5 F% e! `
(replace-item 3 trade-record-current note)  f0 U' T3 e' j( R

% _3 t' \; v( K/ U0 d
5 F3 E/ ?! o: K+ [. [& ^$ e
ask customer [
0 }- G; N% `+ b4 E, Cupdate-local-reputation) }+ }& n  g. _4 w$ @6 i
set trade-record-current% H- d3 z# M  a& a# w2 ?
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% `( M, X& u7 f% F]' o& [/ B" R9 ?2 D* _

1 T) R2 i) c9 B" e
* a6 n' d$ C0 e( W" t! h1 F6 a
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) M+ g/ p  Y1 v% e

8 {3 c; G! Z. [- z+ {/ h2 iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ r1 X" K" {+ W. B. k! Z# j
;;
将此次交易的记录加入到customertrade-record-all, w7 s3 E$ @- C9 u$ u
end% Z' Q0 ]2 i& N8 L% |; D& \% f- q' N
5 r2 y$ o- d4 X- K& w9 n$ |  [
to update-local-reputation
" i; k. m& c- J3 \set [trade-record-one-len] of myself length [trade-record-one] of myself
7 Z! k2 A# I2 l: H
5 Q6 I* Z4 Y1 A$ F& x
1 c# Q+ P" U5 p& F9 K;;if [trade-record-one-len] of myself > 3

0 p* t* o3 F# N) Iupdate-neighbor-total
2 Z- d" {5 j5 z5 p. Z" Q) `;;
更新邻居节点的数目,在此进行
: _8 \& j- E/ a( }, r( O+ S# elet i 3
/ n: @" B1 d0 |/ R# Alet sum-time 0" ^+ U( B: D+ @9 O8 C
while[i < [trade-record-one-len] of myself]
" e8 f' C  d; t1 W3 x: C[
, ~) Z$ i" \6 w0 Vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; T6 C" y0 L, j3 J; z  ?  ?: xset i
: }$ R3 K9 l0 k' @8 K  A3 \( Y( i + 1)
9 ^- w. F; ^2 A3 \+ B; O
]
5 U3 b& m2 w& z' }let j 3
( Y6 q2 j, t: W8 O4 j4 ?let sum-money 0
: Q; H! T) {' u- I2 s' i, I% jwhile[j < [trade-record-one-len] of myself]
9 N4 Z! J6 e: S7 l8 ~/ c# e& i[
0 [9 P5 h8 @; b' }1 }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)
% @" `" m6 O2 ~7 Eset j3 B6 d6 S2 c2 s5 q
( j + 1)
4 @% M9 G* k& p
]
* D$ L3 J7 s0 n7 W6 @0 D/ tlet k 3. f) Q( E1 b: t
let power 0# G3 o. {, ?* r4 h
let local 0
# u; G  @- w( i* s2 @4 Lwhile [k <[trade-record-one-len] of myself]
0 B! L- R2 b" `9 B! S[  p' y" ~2 R1 m! |4 Z/ A
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) / H2 u* i" [$ W: t
set k (k + 1)
* [5 d  w* v5 P# D- I5 f2 y! L]" W7 h, c4 r1 u! K. d7 U
set [local-reputation] of myself (local)
8 n2 q) q2 a: i) Hend+ i7 w. d7 _$ b  k' H( O" r% Y$ ^

- Q  @: U- q# {( O6 A4 [. Cto update-neighbor-total
  w0 @2 T' H1 P. E5 R* J$ I; X" V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# O% T' A5 \* n/ w+ f
5 G: a1 J4 h) M' p
  l+ h1 k) I3 O2 f* k! ^2 i
end
) ?/ n' J+ E+ G' [" o+ U+ I. J4 Y: h+ n$ V. u% R0 q$ l5 x
to update-credibility-ijl
9 Q9 g, R$ q4 ]7 \7 s' m
: V1 m2 O. y7 C7 g" E4 B;;
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。1 z! S& Z; j, m- ^! F+ e
let l 0, X, s+ [  X" Y! g
while[ l < people ]
! m1 z. o' \' y7 {;;
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/ u, u; A+ r7 K5 a2 ~; S
[# ^9 N4 q( W9 ~' `4 A! \3 \, ]' a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  U& G6 f% d- ^& B. z# D1 Wif (trade-record-one-j-l-len > 3)
9 ~2 k; [, u" C4 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-one0 p/ U/ j2 G" k4 b  W  K0 }
let i 3* `; e. Z2 g8 j: q3 g
let sum-time 0! V; H- B; u* p& h' T
while[i < trade-record-one-len]
0 P7 X1 K  [! z: _, c0 [% D6 u[& Q5 O3 V, ^" @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 ^6 _% {& l1 _8 u; ?' U9 I' yset i
$ R% d/ d* j. ]' W) q5 ]  O+ y( i + 1)
: `# _) y$ [( {- K; ?0 q2 f$ S
]
# y/ b9 _9 I* M) P& Nlet credibility-i-j-l 0
6 a: T, j8 q& h$ @% H& a0 d) w;;i
评价(jjl的评价)
% T! F. q; ~6 x- I8 `0 Dlet j 3
! W/ S6 I& n1 r+ ?: }' zlet k 4
. q2 z$ h" J+ ~0 x1 Cwhile[j < trade-record-one-len]. D" U0 N9 [, P2 g% D* y
[5 l4 B' W: x( L# r* a! 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" i% W4 C! o* ~
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)/ R5 D! d5 Z4 F6 z" V/ i0 k, D0 e
set j
7 M6 j4 F& H; v9 W7 r; b. |( j + 1)
$ t8 ?, {# [. M5 ?0 g+ L. j( E
]0 m; @! v4 J  q8 Q: R
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 )): q4 _9 y# G4 I6 A# w# K, W

* @, p. g5 [% u$ X. i
5 b7 s  N  c6 A
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 L  \  N+ }+ V2 I: S;;
及时更新il的评价质量的评价' Y  b# }  g+ U& D
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! ~, C0 [* a/ d9 W4 f7 A9 R
set l (l + 1)( Q( g4 a) m' L1 G6 [" d
], }( J! k7 C7 i5 x! d
end2 |: I; v" e9 [5 n
0 Z" j, x9 c# g1 s) E5 T3 ]' L. R' D
to update-credibility-list. F5 V9 {* M7 t5 o8 L
let i 0
2 `) l; V8 h# M/ Pwhile[i < people]* a# {& n: h3 ]) Z& |7 x+ P
[
  i! i' S' C, h- O& flet j 0
6 k; ^: F  [& elet note 0! W( X" n3 Q0 [. V
let k 0, n, `7 _0 N' _
;;
计作出过评价的邻居节点的数目; c- @+ ^& l5 _( g* g7 y
while[j < people]4 g6 @& X5 G7 V+ S6 q3 d
[
+ S( ^) U  \0 d' d, e2 zif (item j( [credibility] of turtle (i + 1)) != -1)6 u% l. B9 Q& O/ @# B) E
;;
判断是否给本turtle的评价质量做出过评价的节点5 q5 V3 }9 X1 n$ m, v3 r1 _7 g: n
[set note (note + item j ([credibility]of turtle (i + 1)))
( l* m. u  }1 Y0 ?' S: a;;*(exp (-(people - 2)))/(people - 2))]
" e$ ?5 s  I/ m  c5 C
set k (k + 1)
$ @  q" t& z' S) |]4 W5 p$ s+ F/ V
set j (j + 1)* \* M# H' P0 A# [& O
]
' A) Y$ m: t# O0 l. Qset note (note *(exp (- (1 / k)))/ k)
0 e  Q: B5 ^, ~$ m& eset credibility-list (replace-item i credibility-list note)- z( |2 C$ ]9 m% p' d) G/ D
set i (i + 1)
/ S$ M; y# {3 G( [5 [0 x; k+ s]- g6 f. w6 Q: d0 ~
end% v1 j0 c, s) t' h5 L* F

( K3 j0 k. z) I: e, h& X( ito update-global-reputation-list  _4 j  c1 M1 `
let j 0
/ a* u" q" U% f; G& h! uwhile[j < people]1 x! F- U" ^3 C
[! G1 ~: v; x1 |7 a
let new 02 h# C& I7 B  O: v. s5 O
;;
暂存新的一个全局声誉5 u' u, K! ?1 H5 M+ s, |& M+ e7 H" J
let i 0
% b- j$ z* x( V* clet sum-money 09 M: s  z+ b) v2 A: c9 W
let credibility-money 0
( c0 X6 Q% y2 J+ W( G. f& a. n- W) ewhile [i < people]
. a2 s: ^% l4 N+ k2 I[
7 S6 s! ~- [' S! l2 s# Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( ]: |; F6 p4 }: Nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' U. X  M  \7 ?. a5 @1 V  c
set i (i + 1)8 Y5 I5 Y1 M0 a5 T
]
$ i6 I0 G- W8 B2 D  y) zlet k 0
9 D% M3 V; I0 alet new1 0# g8 Q4 u, k4 e6 \  W, s
while [k < people]
  c. [% O6 l& X  g[
$ V0 z7 Z, q. ]# Uset 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)
4 _% F; q- V3 T; ]! [- Vset k (k + 1)+ g! h7 r; W/ Q# N5 Z
]
' K; V0 ^7 d$ S8 V) \7 |9 z$ Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  V0 h  r. i* [4 A" o+ Iset global-reputation-list (replace-item j global-reputation-list new)( Y# b4 F/ U$ s# h* k1 m% w
set j (j + 1)
; T  e/ j1 l5 A/ b/ r0 S]
/ N1 ]( Z4 [2 s; Gend
2 Q9 z/ t6 q" r) J9 l  `$ j; I+ n/ [" q* }

! L7 J' {+ q6 k! ~) O/ L/ y: j( [
. W, J8 l2 F, n/ [- ]" Wto get-color+ ]9 s1 ]8 w/ H% W

2 @- L, }5 u8 F: L" b/ K9 @set color blue
5 B# Q7 H  X: ^3 p7 _
end
: h1 Y. P+ K) B+ H. Q7 w5 K2 j! M+ A7 S) p$ N7 [  K
to poll-class" D+ k) I1 K; W, k7 `# [
end
9 _( [/ P" g* j% H' R# j! |! W" P# Z
to setup-plot1
$ W. j$ m- E3 c) I
* r3 h0 U  z4 \, P, [3 uset-current-plot "Trends-of-Local-reputation"
! M7 Z4 O, k8 T: @$ Q
. J8 V: [1 @8 Z) H( I
set-plot-x-range 0 xmax
$ r3 L+ l6 _# ]) x& z4 a* j

2 `7 S  |; y6 p2 Y1 Yset-plot-y-range 0.0 ymax

7 w6 B9 \, _- f# s5 send
) ]. x. {- H. u3 Q) W' |' O$ C7 _/ V- p8 r; o+ g1 e. e5 l$ g
to setup-plot2
* T! e$ Z; |# }* ]. B1 E4 _- |/ F3 n1 ?% ~
set-current-plot "Trends-of-global-reputation"
/ R8 n' P/ W5 R7 m7 w
) Q8 x1 L4 B$ U0 I2 p3 J
set-plot-x-range 0 xmax
5 e+ s: ~7 q; @
4 d5 l) L( A& r6 H% a
set-plot-y-range 0.0 ymax

( h# u/ S" h0 O- ~end
3 @' q) D, {) s3 ?1 ~+ G' `6 U. v  ~) Y# E) ]
to setup-plot3' {; _5 }! C" G) n1 N
* ], K& q0 d/ c% ^% j
set-current-plot "Trends-of-credibility"

# y6 ]; K) O& Q* X: E$ b- V8 h* O2 W3 R0 _
set-plot-x-range 0 xmax
. h/ I7 A  y+ q$ U( ?. u, G6 m2 d
2 y7 E, O" B( f/ ~7 e3 r
set-plot-y-range 0.0 ymax

: [( a( H) s1 z) K3 p) f4 tend. I4 |) I$ n4 @+ ^3 s

. L3 \0 P" n- ]9 E4 q5 sto do-plots
, ~; u: u0 x$ h1 F% Q9 J* s0 |set-current-plot "Trends-of-Local-reputation"
7 l; s/ \3 |) H$ jset-current-plot-pen "Honest service"
* [( h: Y. I2 R- yend
, c- l' T+ I5 Z& d, c, y% h! L3 O% _7 q, N5 D8 |
[ 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.
; U) v4 k/ X5 N* p
' o$ G# ^1 v& Q& S5 m1 U& y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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