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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:
- m6 M8 G# E6 W  V& G1 l5 v0 Cto do-business
+ W: s! s# G0 G rt random 360
9 ]3 o8 p" T8 q8 q! E& h* F. |- H fd 1; u; i+ r2 S3 {; K7 f
ifelse(other turtles-here != nobody)[* A& g: {$ ^* Y: L9 N- Q
   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.) T9 [) M* u# V; A* |7 @9 e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! q! C8 m3 s: j# l! x& A* J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ O% Q/ n+ z5 W2 Y1 n6 |' f
   set [trade-record-one-len] of self length [trade-record-one] of self
% k% V7 r  \9 G' |: n, m3 c- [   set trade-record-current( list (timer) (random money-upper-limit))5 [5 Y. Q! s. \, t/ \' p

% z1 T5 K  h0 L9 H$ w! F问题的提示如下:
( _  p# ^/ d/ S! u! S
. S0 z2 D/ J+ Q% E' \$ Eerror while turtle 50 running OF in procedure DO-BUSINESS
0 u1 o) R8 R0 H/ [/ r  called by procedure GO
" N9 l% }; w# S: W! h4 a+ M3 C& Z- ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.) n' t. x: F& B* x7 @
(halted running of go)% A& J' y9 u/ b4 o! M
# {* Y1 a8 o2 a! [) v
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~~
$ @! v& i- R' W1 t' R2 r, s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
7 Q) b- B3 q0 g' I6 wglobals[1 {9 V% H# P" Y. w  U
xmax
$ e" h7 x! l. @9 k$ @/ }ymax
: I' @8 x/ K( X; U* X% Zglobal-reputation-list- d; W5 R/ K4 {8 T9 H, i) n

  ?' O* z' b, M3 j;;
每一个turtle的全局声誉都存在此LIST5 ^4 u+ b% s( S0 l
credibility-list
. Y3 [6 `7 A- |. X+ [: D9 w7 y;;
每一个turtle的评价可信度: Q' P5 J) f6 q% v7 `7 ?
honest-service
. Q$ c, E* _. E4 p) T/ O& C4 S3 ~8 C7 _unhonest-service
  J( N) c0 y- r7 Eoscillation2 E$ K2 n  \+ T/ [
rand-dynamic1 @; l  M8 c! F; X& r, ^8 H
]( b, [+ [0 U2 b
5 U( g; j2 V. N
turtles-own[
% `! P0 _* W6 A/ {4 w# s5 \trade-record-all; M; B5 ?+ A8 S+ U- s3 {& e/ _* l+ Z* X
;;a list of lists,
trade-record-one组成
  l5 ?+ x) }5 [: q! K: h8 D8 ?trade-record-one/ u% N; Y+ M! d6 t% ]1 l
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 K5 J# _1 j" i8 z  {
1 M* H3 m+ D$ C: `/ t; I  H
;;[
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]]' M+ n, B; ]# X3 x: [# W2 U2 G
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]# k. _/ a2 y5 m; G
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list6 f9 s; c4 n; @1 ?# X  g( g* t
neighbor-total
1 |- B/ D, A( F4 s: `;;
记录该turtle的邻居节点的数目
1 F  \) x9 \0 D1 Jtrade-time
3 Y5 y2 Z( ^$ m0 w5 V;;
当前发生交易的turtle的交易时间
, S4 c% A, g7 u6 }% pappraise-give- [$ F5 T4 l6 Z; i
;;
当前发生交易时给出的评价
: E9 o4 l, J2 H$ Z! B- E  y+ Wappraise-receive+ ]: L* G( F0 k# m7 c; r4 I
;;
当前发生交易时收到的评价+ k& i5 ~2 v: f. B
appraise-time1 S' q$ q3 p* [! Z! J( g
;;
当前发生交易时的评价时间
! o6 O  |& m- t9 `& M) P- hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉$ I& w' t  J! T+ V0 n" {
trade-times-total
3 X) K2 w+ ?9 G4 I% y  @3 h8 e/ K;;
与当前turtle的交易总次数7 \$ b$ m9 R* M; \0 c
trade-money-total1 Q# ]. E; o: h9 G2 g
;;
与当前turtle的交易总金额
( m! s4 `# y3 S8 Q3 }9 @+ Ulocal-reputation
& e3 T$ h, d9 H1 hglobal-reputation
, y5 Z* L% f% v* P1 }credibility
5 ^  g8 h) N: `6 L3 Q, O;;
评价可信度,每次交易后都需要更新/ G; o# b5 W! p; l" Y
credibility-all" x" i* N& N% g* H% ]+ R  k
;;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
# D! a, W0 ]5 L( w7 |* ?: O# z* y) a' }  }  Z. I9 T! ?& L
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
. r8 f$ p9 Y) p/ U) ycredibility-one
- u6 t! x- Z# M9 n; l;;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# a. s# }  L+ K% b& c
global-proportion& V; G3 T) m- b+ y3 K
customer
; e$ G- H  D9 @2 b  Ycustomer-no7 b: [2 e: r- h2 c6 t
trust-ok$ T7 V: W5 H/ }5 g/ F% w. }: |
trade-record-one-len;;trade-record-one的长度
+ T, C- {( u( K, g]
5 m, P& S4 k+ U$ i& T. S
* D% Y+ `  p* c+ J) z) k;;setup procedure
' M1 K" C( t! V3 A  F8 r5 ~! a/ N" F3 I- I# l0 |( J0 j
to setup% a" u! ]6 ^. g4 M* M( R. y

* m; O% R. X, x; L) j. C6 Uca
9 B+ P- d8 m( o: A; L$ f+ Z, v/ z% H
0 Z9 r7 Z0 v! ?7 _# q5 x
initialize-settings
5 E. S& w0 K% ?" e$ V3 R
- Y- j/ Z/ i& [
crt people [setup-turtles]
( v9 ^4 s) U8 S: _

3 d( K9 {+ T4 m, x( k7 v# C7 creset-timer
% D/ E( \4 u4 k. [2 ^- ~5 H: D6 ^
2 s4 C3 u2 R. u% u6 p) v$ A
poll-class

7 I% s$ C) Q$ R! c4 G- O  M
+ r/ x$ ^" Q. ?! [0 q% F1 fsetup-plots

: A, w5 @" r, A# p  A' e+ U1 A0 h# q3 g7 ~% h
do-plots

, x$ i! f3 ~; S6 K6 i" s, Z7 ~end) }* m2 I, J' S" P
/ |8 l( Y) g2 r; k! ]
to initialize-settings; G( h% y  e  t# c& l4 F5 H4 ]8 O7 r! _

7 K- j( h" e( ^3 {! u7 zset global-reputation-list []

/ Z2 i' P( f: C" Y* r$ V5 |( I/ R( H9 b, |- Z$ \7 a& O" S
set credibility-list n-values people [0.5]
& z/ ]: o0 h4 v0 }

2 }6 c. d1 B7 iset honest-service 0
) G0 w: [' K! q( q9 w
) }0 d; g2 Q% j* Y% T1 X
set unhonest-service 0

  o  `3 i+ D7 t6 R; H% ?0 ?
8 o- {( b" {& ^, Z& H$ Rset oscillation 0

! Z3 t0 F" o, I# O1 {  X; Z
+ T3 [( U, _" a  {/ [& _9 Y9 F/ i$ cset rand-dynamic 0

6 U& a+ |2 [1 F8 e* nend
4 e5 s! ~, x( p* o! k) e7 e
' Z8 ^3 ?: i/ }+ t9 g( o* g) dto setup-turtles
  e% \. |7 b5 m2 Z1 K, s$ @set shape "person"* e+ A' X' Y( U5 ]6 r% e& \
setxy random-xcor random-ycor# h3 H2 h/ Y, f( \! n, d
set trade-record-one []4 f! W9 |; ~' u  Y' p" N
1 {* b3 z! C+ k- Q9 o  ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
  R. k% k- Z: ^+ c
4 R- S% Q4 u/ u# u5 Y4 R$ y
set trade-record-current []
2 G  k% I! Y& R/ }5 M$ U: Jset credibility-receive []
$ ^) L& h. D+ c9 ]2 `2 Z' Fset local-reputation 0.5
  k# N  Y" `$ M' |5 kset neighbor-total 0& q8 f. y& p- S1 \+ M0 U, i
set trade-times-total 0
" I7 ~! Q. j! H3 F8 L/ nset trade-money-total 0) [# `3 K& O: V
set customer nobody
8 R( B- ~# v, [5 Q6 h5 zset credibility-all n-values people [creat-credibility]
' U( @: \- _- w) `% ^% x6 o) gset credibility n-values people [-1]7 k- V! g; m2 B
get-color
- F" f2 P# o" }. J8 b  p) v9 }3 `
: z$ F2 o% H2 ]3 w5 h, ^, H
end
0 [$ e/ T0 q+ Y. X! }# ~( |! w0 }4 _7 r
to-report creat-credibility
  ]9 j5 s" F& x# d- j( J% ^report n-values people [0.5]
- ^6 H9 Q: `* ^: N4 {/ F$ G8 send
" d& l  P9 [0 V) N5 V! S, M! h* o  I& }5 e# S9 |7 N' Z. D
to setup-plots
  ?8 N. o  p& X# ?9 v- `
! L0 q; p# X- R4 w$ Y3 Z2 e2 [' Z( d4 Zset xmax 30

( ?- v+ P, c2 ]" r
7 [' p6 e. g# O$ o5 Eset ymax 1.0

( S4 T5 P+ Q7 p8 a5 [+ @: Y/ H
6 d8 B. f6 `' D4 T8 Q+ O* \: t* {clear-all-plots

' F! Y' e3 C2 Z) e& d6 Q5 Y
- }  c: T% s# o: msetup-plot1
$ x2 c& F" i2 E3 ~+ [
% v9 V% u5 Y! h$ J) w
setup-plot2
0 _- _( C' U4 ]( i8 @: x- v
- Q2 m( ~9 ^  G0 V
setup-plot3

1 M$ e' r- Z/ f, R1 X- pend
3 v6 Z6 Y' t) q; w9 F2 r
) I' @& m9 {! n2 p;;run time procedures
; P% I4 O" g6 q) S( X6 m
' t* e" w& Y0 u& Nto go. w) N" `$ j+ v. C
( u5 l+ k# Y( D. D# z8 Z$ }1 c
ask turtles [do-business]
( F0 r5 x+ M  y, X# T
end
; c- B0 X1 M2 @" m6 _* _# O$ d* f, F* P  N; F& _
to do-business
' R. ]+ A7 l, g
+ S  M' Y. Y  K" I0 o3 r
# P: T6 @2 e' m- a$ V9 K' ?
rt random 360

/ i# p; b9 N; @/ X$ N9 X* z4 [6 G/ h; Z
  B# }; ~( }" q  H. o. x. o" mfd 1

6 L3 K6 k3 f) U9 C
  z# Z1 Y1 _6 P4 v8 q# c2 @ifelse(other turtles-here != nobody)[
3 ]2 a! i: \0 y  i0 j9 j4 I

2 {' R' x- k9 i6 n+ wset customer one-of other turtles-here
$ v' t/ v$ D# g9 d& D  L

8 t! N; B% F; K;; set [customer] of customer myself
( p# F+ T$ H# `) F- Y
) R1 z3 q1 k& M
set [trade-record-one] of self item (([who] of customer) - 1)1 a7 ^3 v* Y! J9 L. Y( a% d& t
[trade-record-all]of self7 n  U" ]4 Q" z8 Y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

0 O( A3 W- A# K+ x' ^
2 s+ M2 |7 O7 p" A) ~set [trade-record-one] of customer item (([who] of self) - 1)
! L3 Q7 a: W+ L4 c[trade-record-all]of customer
! i8 ]: v: s# C7 L2 B1 q* b1 Z

: V  V+ G$ \/ u( ]- d, B6 l, }set [trade-record-one-len] of self length [trade-record-one] of self

& e! r. Z- d- I3 w. x( @5 v. U# j. h+ a( L- }
set trade-record-current( list (timer) (random money-upper-limit))

7 X5 `; u' r9 o/ g- v
4 a' x2 i/ X) Eask self [do-trust]( i) y! L- q" F9 z) C0 _$ k3 g
;;
先求ij的信任度  |( P) ^0 p, f$ H  |8 u* M

  C' k6 m: k) Zif ([trust-ok] of self): g( m# A% b: c
;;
根据ij的信任度来决定是否与j进行交易[! j6 D2 ~- B& U' Q; _
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! T+ ^0 h, t$ n* p2 G5 ]
, I* M- ?, d+ f; }[
% H: C0 o( K- i; q

) P  J5 n8 \1 Q! Udo-trade
% a* |) n3 X! J9 ^. X
3 `  T( ^: B* r
update-credibility-ijl

+ I& j( x* M' x; @6 ]/ r" A, y; Y% n3 F; S5 c# W' ]
update-credibility-list
3 }9 N5 |* I8 Q5 p

- G9 M% D% R9 |, p6 ]
, |( `2 ~( N& d6 q4 Lupdate-global-reputation-list

* z5 j! ^# G# B& V
1 ?; k- N, L  S* npoll-class
" Z& g! q0 d; ~* W# ~9 d0 I& q
2 k4 D$ S1 M( d& c/ l! G) x
get-color
: v! X& s. x* w$ F% G  r) c# z) b

2 Q4 Y) L" h" n4 ^' S4 n. {0 o1 W7 q]]( l# n" [3 _# A0 K; ?6 F$ A

- ^9 ?9 v9 O5 i. X/ M;;
如果所得的信任度满足条件,则进行交易
  Q' }) c  J9 v1 |
- Y+ T; R* |3 ^3 @* {) E# k/ g) h[

- i2 @$ X: I7 q( d
) S1 {; i# k0 ^/ b0 Y! i; Yrt random 360
; h& P2 p, L& m6 ^4 A

4 J# W9 H3 t  W; z" g& Wfd 1
2 l) K! A# r: {) w* J
3 }5 D' X" j, ?6 P& U
]
. }* f$ D  ]* b+ `1 N' A$ K+ j9 m/ a2 h( N
- u1 ?3 j( ?6 k! F+ C- ~% m2 S  {0 \
end

, D& Z$ M- p! E1 r& ~3 e$ s
- R  [- T7 i: j& _to do-trust 7 d: a8 w" u0 Z
set trust-ok False5 c3 ~( j0 _- {& I1 ^, i! ?! b$ k
6 ~/ L  \/ m' A# V. F" B0 _0 d* ]# }

, m1 F5 f( Y$ U3 y  nlet max-trade-times 0
9 j) q8 Y) I7 a6 @7 ~# yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ R( d1 U, G# A1 N5 u" Rlet max-trade-money 0
" J2 a! \( b; T0 U( rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]- B" W9 k* G3 w- N' Q6 r2 q  R) n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 b4 q6 X8 v+ t; V& w: b' A
. h: ~6 }  V6 i' E6 y
' F9 R. F! T$ s
get-global-proportion
% T: ?- d6 o  Y7 ulet trust-value
8 M" Z- P( k. w4 ]. Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( q: w  a1 ?" h3 L0 ?3 o; o9 q
if(trust-value > trade-trust-value)
9 n( Z/ M" X0 E3 M* Y[set trust-ok true]
; M5 Q' F9 I5 K0 Tend
% T7 U4 h6 K4 L( d* q  H" X. \& f% F4 f" o
to get-global-proportion) b4 f/ s7 v5 P  V  b2 @
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! _7 j) @  g, O  R8 C! B8 g
[set global-proportion 0]
5 A' h5 F( {, r& u0 E* [[let i 0
: R1 h% E/ r. @+ P) rlet sum-money 0
+ D1 h+ A# ^( lwhile[ i < people]
* b2 W/ a3 Z4 M  y; ^) Q- U$ Y[" `4 R1 H/ G, H% J. u2 n, T) ?+ `8 d
if( length (item i  E. u! c! v- q- V
[trade-record-all] of customer) > 3 )

3 N' K8 U& b% V9 ?% |8 ~$ H1 Y[
8 K. T( m/ t, G" j) n9 m' Uset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 z9 D( [' _; V& b$ t* d0 R, J]' E# n% a3 L  l8 ^9 l
]
0 E4 k/ U8 [& A! R2 Hlet j 0  [7 Q3 r. J; O$ w" _0 K+ K. p7 J
let note 01 Y4 Y8 L  [7 V# [8 j8 W5 u
while[ j < people]# f2 C0 h$ R* ~8 d
[
& F: p5 I9 k& a, O; Y! @if( length (item i7 s, U/ I& x4 B5 ^1 v  T
[trade-record-all] of customer) > 3 )
9 N4 k6 K, Z3 U5 @, q
[0 `2 d5 N5 m& [8 f- k! R; L' C+ m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 _3 t/ I6 u  g) }7 D2 T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 v; }. O4 H- \) }0 t[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' \& M& s1 D  d; H" I1 a
]
$ g4 v# ^- [# ]8 P$ l7 v) n0 I]
$ n- I+ I, O5 P: ]$ oset global-proportion note/ Y3 E' B( @% c
]4 W6 u* e# c6 y& E  T( s, a
end4 R$ a6 u( O7 g3 q  L% D
& W0 ^- B. R7 Z9 q" H
to do-trade; Y1 a" u8 ?- v' k5 \5 t! Y. B
;;
这个过程实际上是给双方作出评价的过程% r% B' J% n2 M) T! A3 r' p, D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* t( r; K: i! [/ d, Y4 ^! a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- J/ n6 ], p1 O4 P7 [/ G* s: Zset trade-record-current lput(timer) trade-record-current, v$ J9 J$ ^8 G9 L% y
;;
评价时间
4 `, r1 L, c, G7 v, Lask myself [$ {! s. _8 D: u1 g* ?8 i
update-local-reputation
( _6 Z: r) L* _5 P% O, Y# p7 Kset trade-record-current lput([local-reputation] of myself) trade-record-current
# O" t: C+ L6 y& b  @  u]2 T) P1 ]; K# n) g& ?2 E: O2 B/ N
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself0 _0 c4 D* k& P! ]: ^. I9 T' ^
;;
将此次交易的记录加入到trade-record-one
3 @) n$ ~' H( t/ g$ c. zset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  c0 T/ _7 v* Rlet note (item 2 trade-record-current )
6 M2 {* d+ X$ _+ V  O& p% dset trade-record-current
9 G; ]( i8 e. H2 D; F: B% ^(replace-item 2 trade-record-current (item 3 trade-record-current))

( |8 M! p: Y$ `- y+ J; u& Xset trade-record-current
; i& a( L9 m3 y: n8 |(replace-item 3 trade-record-current note)7 M0 d, b( V/ K$ S! ^3 p/ ]
% q3 l8 X' f* O3 P& s" {& R
) X6 z; o# s: ]% G. ?1 R
ask customer [: y, x4 ~. }% _
update-local-reputation
' m5 o/ h+ R3 f, ~( P$ \: b- vset trade-record-current8 Y0 J+ p" {0 m/ {2 [
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; d+ d  X' k5 H* c]
9 F7 Q8 B/ K* _4 b" K: {* M& W* D
+ z3 d8 R* {4 `+ C, u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, w5 O, B5 |/ }1 v1 w

. t* u+ d; u, h/ pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), |6 K# z0 H6 i. T& c7 ?# V
;;
将此次交易的记录加入到customertrade-record-all3 w4 F& \8 r& d5 M  f9 f2 u
end- A( {- s4 L+ N; \" t

4 z, \0 a/ v( T4 zto update-local-reputation
& A( f# D! h" d7 mset [trade-record-one-len] of myself length [trade-record-one] of myself
  h3 K0 T/ s! G6 O8 [. W2 {5 Y& R* n, M) r0 G+ D6 B# w* y
5 [5 b9 m6 d0 l0 w/ K& ?% @
;;if [trade-record-one-len] of myself > 3

) j5 \# p' W& V3 V* P0 jupdate-neighbor-total
/ K5 a! v2 Y6 d;;
更新邻居节点的数目,在此进行
4 \; r5 I) \3 X) {- l+ a+ }* tlet i 3  p( j9 a8 n+ A8 M
let sum-time 0* f1 z+ y, E+ j+ G6 |6 b! X/ ~  Y+ x
while[i < [trade-record-one-len] of myself]
: L; a# I& Y- M: K6 v, y2 Q3 o[, h! m" x1 J4 f$ t0 F# P7 I6 T0 Z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )% x1 [/ u; r, {0 J: F/ @" l- J
set i* s6 T. r- d+ n
( i + 1)
& P3 D+ Z" e6 `0 L6 N( {0 ^2 [+ L
]
2 D3 n: C9 d) k; i4 x5 J: Klet j 3
5 V( m* I( _' R: llet sum-money 0, v# ?- P; D5 @$ Z4 h( v6 r- @& g
while[j < [trade-record-one-len] of myself]
& z. m2 Z* t9 y; l+ ^[
2 b- @1 b3 i% Lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 X8 x* r1 }; |
set j# E; r) o% m8 r) [# |7 l; c
( j + 1)
, n& {7 z0 O" [/ ]+ n0 |# C
]6 t: \& \5 p' a
let k 3
/ k. B4 T. w; o# x* n8 glet power 0: d4 X5 \3 S8 f) L
let local 0, K. x3 \* [  x2 j3 Z5 C, S. ~: l
while [k <[trade-record-one-len] of myself]
0 q2 ~$ T. c( p* {9 x# a! C- M[" ?; `6 M! `; r2 j
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)
# N3 A+ f/ a0 O1 }7 u) Y! oset k (k + 1)6 i* h/ f' K4 d8 z, a9 ]1 d
]& m7 L7 s- D- f8 i8 r2 i
set [local-reputation] of myself (local)
; h# ]& s6 H( ^1 d4 E2 Yend( C8 V# Y* r4 y+ [0 c  O- `
% W2 {# ^! N. t; K
to update-neighbor-total
! Z, F" a2 y: h) T; ^) f
) s8 |2 n7 o8 m! E0 ~, |if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& C% a+ f- R% I: p

2 W. \6 x! l7 l9 d2 T
# k( e1 W& Q7 }
end  W3 z4 f( b# Y. }! H  o
$ w3 y$ O3 P& Q4 u. x
to update-credibility-ijl
$ r; ?$ h, Q+ _! ?; j/ j9 \( i
1 e9 s) ~* a+ u# \. t, P) v;;
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 |* u! Q- F& H0 P1 v3 qlet l 09 |8 x6 l1 |. A' ~
while[ l < people ], C: P; Q1 G5 D
;;
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
; ^" w3 k% m' j+ k% ^) [( X[! @/ z+ g7 z" {, p6 Q' U
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 n5 a# f) r3 l* v* ^if (trade-record-one-j-l-len > 3)9 I3 I0 _  P4 L- ?- z# v* J
[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 n. n8 a& U. Mlet i 3
, {$ J& c( Z3 Q! A& ^: X$ blet sum-time 0/ I! W2 z8 H  S! i- N* a4 x
while[i < trade-record-one-len]
1 G) k% ]7 r% g# U[1 t$ H  O5 E; e  h$ [. C$ e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 d. x# z6 f- f) w& M/ r" m
set i& a4 G% e% `  F4 _
( i + 1)

1 P0 V' J6 L4 o5 L- V  u$ z]) j3 k; a' O' E% h- k
let credibility-i-j-l 07 S' R" W) h  d& X  }  ]
;;i
评价(jjl的评价)+ ?3 m; b# }% A. W& u& q, |: l
let j 3
$ {$ Z2 j( O+ V& nlet k 4- J( z. f; g' O! f" o  i1 T1 n" y
while[j < trade-record-one-len]0 N( \: |4 V, n" q8 x
[
4 r+ Y6 U, n4 C3 C2 o4 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
( T% m' x5 T' q0 ~/ tset 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# {, @. K
set j7 [7 C- }6 t& f+ d
( j + 1)

: @$ Z. A& A* X8 ~0 j]
2 z6 t3 {1 E. Nset [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 ))
' q" V& c* I3 J' O6 |* a# T: l  U. Z# _# t! b. M

' M3 v: L* A: x& Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# h2 r- i; e0 k( z+ ~0 t4 |- m, u. B
;;
及时更新il的评价质量的评价
' ~+ s* Y  I, M6 U2 h4 O& Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ C( E4 c& d* x. E  I
set l (l + 1)3 [( r) W2 d; Q
]0 J+ {/ N: }7 c
end
9 O/ C9 o; _" n) \6 e) E( Y" M. L: v; |( f$ }6 p3 e
to update-credibility-list$ s2 C; ]/ T% P0 N7 Y* Z! ?
let i 04 B8 F& M% v# \
while[i < people]4 ?' p9 a. b) c7 ~1 f4 S
[. }% g: }! W6 J6 Y
let j 0
$ I# Q4 s9 l/ G: Q, slet note 0! R4 x) W0 T, g  X0 N* m, C* s
let k 07 t, w- ?* i6 N* ^
;;
计作出过评价的邻居节点的数目
. b! B; m, A! ?0 ywhile[j < people]
+ I( e7 G& |: U" U[
- A+ m* X2 p6 I: Y  R2 h' P8 t6 Pif (item j( [credibility] of turtle (i + 1)) != -1)
; ], U8 J. P; |4 U4 O6 g;;
判断是否给本turtle的评价质量做出过评价的节点: V4 r# i5 k0 g
[set note (note + item j ([credibility]of turtle (i + 1)))! t, D2 U, v7 r9 K2 Z
;;*(exp (-(people - 2)))/(people - 2))]
, P, m- A+ Q1 z% d- E0 i. K
set k (k + 1)
, W/ i' b7 U' _5 v" `+ [& G]1 E. o1 B- |. D5 r
set j (j + 1)' h, [' Z/ o9 l0 G
]  q" j0 Q8 C% N3 E8 _# O* T
set note (note *(exp (- (1 / k)))/ k)
4 G9 {  N6 ?5 M! b( |, U- Z- Hset credibility-list (replace-item i credibility-list note)
% C4 \% e- ~! k! [8 v* Dset i (i + 1)  K% A% X. e, D
]9 ^+ t$ S% p/ Q+ ~" Z
end
- g" k7 _1 x& _# X! _5 Q  w8 H: f4 \
to update-global-reputation-list
; M: J0 J* X& Y" @% Tlet j 0
6 t) ]5 c, V5 c5 I2 ^while[j < people]
0 {6 O+ L) b0 o# R0 x[9 C8 {; L+ O6 a* W* C2 T0 x- ~
let new 0
8 l+ U, ~, K; Q4 Q;;
暂存新的一个全局声誉' t5 @$ Q. f2 N6 B" w# `9 c
let i 06 w. N7 K5 t! w) H3 A5 D2 N$ D
let sum-money 0' d, j6 y+ S3 V
let credibility-money 0: p, f$ B$ q0 H' S' P
while [i < people]
' e% Q4 H# {, Q' s; @) I6 {/ c! p+ y4 C[( ]9 w5 ]8 x6 z" g4 e3 x
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 x( n! y) W% q- ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 l4 Z: R; @# Gset i (i + 1)9 x$ i+ {# V9 W. T4 c$ [
]' ^8 F! h/ b  k1 R4 U% M/ c
let k 0
& f) m. O0 Q% U1 S* X$ |- rlet new1 04 z4 `3 m/ Z. `1 E+ [* D: e
while [k < people]4 X3 m) b" a$ {* D# z& @
[. k! A( j# l2 Q7 r6 o1 C+ [/ W+ Y2 g
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
* x1 `3 [0 s- X% y1 |/ Wset k (k + 1)
( `* }" [$ l/ W# ]" n% a9 X, W]4 g2 _  u% R0 M/ |  R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 r0 \# g4 |, m4 m
set global-reputation-list (replace-item j global-reputation-list new)
  i$ Y- t3 L2 Y3 d6 t6 iset j (j + 1)
+ m2 E% S+ K+ q! p]
! W# g" f5 q& ?% K, aend! F4 p$ e* W: s/ i, M+ n
9 X+ @! N& F' T1 T/ ^
2 H) ~7 v8 V4 x; C

( K/ r# R( _$ e0 Z9 Hto get-color' [, r1 b: ]( a
' J% E8 F- p& G' z1 e3 h0 {: q
set color blue
. o  g5 \2 p1 [
end* u- F# C5 C0 D' K
' W( ^9 Y: x& A9 p" c
to poll-class
' p3 u9 @$ g8 W/ B: k. ^end0 @1 S( G2 `; b0 d% l$ C+ A( }
0 F; v- A2 H: h$ L  t) c' g
to setup-plot1
, e* i- j2 P  R* e& ~0 a3 q; g: V; X; B( F6 t" u
set-current-plot "Trends-of-Local-reputation"

* w9 W! u+ x( m- Z! B9 x/ f( G- Y6 M
2 x& J  S" f* |; x$ r) @: wset-plot-x-range 0 xmax

9 u/ {# Q5 d- ~& U& k/ V5 |3 k9 a/ n) ~" p2 s
set-plot-y-range 0.0 ymax

7 @: [* z) [4 I9 {5 cend
' ~1 W6 z; H' r4 H  t8 p& R' H9 i. K& a1 ~
to setup-plot2
& L1 q1 Q; }( k/ @5 z- `
+ e0 T" @" f# Lset-current-plot "Trends-of-global-reputation"

) V9 t. d% {! o
2 g' ~; S. ?4 ~  yset-plot-x-range 0 xmax
7 y! u9 y7 b; o& @" H

6 H4 g( g5 Q1 }$ h8 I& Tset-plot-y-range 0.0 ymax

2 X* Y5 C% X) R: ^end9 f# j( o3 y  |0 }# _2 b3 R
# `9 _$ y* E; s  s& T) \
to setup-plot3, a1 t# ?$ U& o0 h; x% ^" n' Y) Y
) S& I" L5 B! w( s0 W5 @! P
set-current-plot "Trends-of-credibility"

/ A# s5 M! M& P$ I; r
: A% Z( H- E/ |: [3 T- rset-plot-x-range 0 xmax
6 p  |: s  \. y) |( ]

) O" q. b1 q( yset-plot-y-range 0.0 ymax
5 T. [% e. p0 d6 T' n! i
end
7 S- G4 p& o; l, i. C$ l1 }3 t8 l5 q" u2 I3 V
to do-plots
$ d& z3 c0 ~5 g- t2 fset-current-plot "Trends-of-Local-reputation"8 N3 T0 C$ {0 I; W( ^% h0 t. r# h& t
set-current-plot-pen "Honest service"
; _2 A7 u  B: r/ ^9 t% b* Iend
2 I8 ]9 b1 t1 q4 V8 j) u0 _& k5 ^) @/ Z- n
[ 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.
7 U/ \  b5 n- w0 j  Q
2 f+ N6 E1 I' b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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