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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:) C% j; w0 X( k2 V' [- ~) }
to do-business $ u* m3 y# y9 Q+ t* \. R. O
rt random 3603 ?5 c" f' p+ h: H+ B# [3 P
fd 19 ~' O  K) ~  h! M0 O$ F
ifelse(other turtles-here != nobody)[; d8 {5 r  S# N* s3 ~# I5 ]
   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.
, ^2 z' {' o+ g% r( |& q   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 \, ~' X6 t4 ~+ k/ R, \. B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( U8 T1 y# [& D$ f) p# S8 s( j
   set [trade-record-one-len] of self length [trade-record-one] of self
$ y7 G6 u8 n; Z# p; ?   set trade-record-current( list (timer) (random money-upper-limit))
% q5 ~9 e/ J6 J1 U, M; H
4 d' j; z. {; L3 V$ k" r' X* J问题的提示如下:: }% Z4 f+ }$ `! j# L
3 O% o' o* f3 M. u, t8 O
error while turtle 50 running OF in procedure DO-BUSINESS4 P  H: e& P1 M1 a1 ^
  called by procedure GO
+ k9 d- x+ g5 |& G+ B( GOF expected input to be a turtle agentset or turtle but got NOBODY instead.* N/ S9 ?& ?* ?, F
(halted running of go)# m) J* o6 _# a/ Q
% s; n, c% x, i
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~~  p) H$ _& o' J1 f. `
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
- g' Q' _9 x& ]2 R0 Q3 K3 G4 yglobals[
, ^  g+ k/ l  _( }- {3 G) g! Ixmax
6 h5 w- }, C( L7 ^0 Xymax
& I, P4 w. r/ g: kglobal-reputation-list
0 T& M0 `* I' G6 Q
6 `  x1 h8 q" t" c$ w& f;;
每一个turtle的全局声誉都存在此LIST6 l8 Z0 V6 n# X& h
credibility-list
4 G- f  R/ I9 r6 A5 @( I;;
每一个turtle的评价可信度
+ t( e' p5 w, l! A  f/ k2 Mhonest-service& w" o# J" B; N# ^
unhonest-service
, H) d3 G: J4 t, X9 Y. }oscillation
$ `6 {2 x, ~; A* q0 i0 q, f3 hrand-dynamic+ N  f. g5 g: ^# D, W0 p, }
]
' Z5 v# @7 K  V5 K* D/ F8 D5 E1 }* q4 n" A& L: t" j
turtles-own[
, P/ [2 F* ~$ N+ Otrade-record-all( r: O' s! s& u
;;a list of lists,
trade-record-one组成
5 p! V( m# T( [7 k4 W/ Ytrade-record-one0 l9 F+ H0 c- [; K% h( U1 V, e, V+ m
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 N: Y/ j  Y$ I+ j6 v

! C% h5 {/ V  r6 m# E/ u* a* a6 q;;[
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]]
; i: n1 B8 P+ T0 _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], b# {' w( M% {, J- @* o- Z
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
5 M$ b) v8 z3 M! ^neighbor-total8 N0 [7 ~' x9 @+ z6 k- ^1 X% X
;;
记录该turtle的邻居节点的数目8 [/ H& ~. L  X3 v0 n5 C" I! E
trade-time
3 U' L# ~, L" R4 z. j) B;;
当前发生交易的turtle的交易时间+ \( @6 ~8 l) J/ m8 h) f2 ~
appraise-give& m9 M/ H3 k7 f' f. Q2 w2 V
;;
当前发生交易时给出的评价4 I2 F7 `7 D$ B; Z4 X9 m
appraise-receive
6 _+ J5 i1 Z6 ~% M- h" r. w; ^- w;;
当前发生交易时收到的评价* G! E- F4 M4 [$ ]9 K
appraise-time* N* J" x- v! R% ?' c/ k" f
;;
当前发生交易时的评价时间% y/ b0 z& J# b4 p; N9 _
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
  @0 F# \; L0 ^trade-times-total
" [( M3 P7 J" A6 n2 C;;
与当前turtle的交易总次数
5 C" K, ~1 b" strade-money-total: d1 R' K6 }; q; w
;;
与当前turtle的交易总金额) E; q5 I; }3 ?, c0 d
local-reputation* N4 x9 W. U# q- ~* f+ E6 o
global-reputation7 m; c- b5 L  d0 L
credibility) p7 J0 g% A  A
;;
评价可信度,每次交易后都需要更新
$ N4 k/ S2 \( ^) _credibility-all
+ U2 q) j1 B0 _% s) C  F; ~;;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1 e# y! c& c! i6 S' P5 g
+ M3 K& C  B  ~6 u  V
;;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
& c5 Y: h$ |( ^, W& Ocredibility-one
! D# \7 ]0 M1 m1 D+ K;;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- \: P. Q0 A/ X- O
global-proportion
+ A) C$ |: B' d8 z5 fcustomer; p6 y2 n& m7 h7 H; b  {2 S
customer-no
" D0 D0 q  O" {4 \trust-ok
2 N! l' s0 X4 v% g; }trade-record-one-len;;trade-record-one的长度
, J! N$ o* {4 S8 u' r7 ^: ~]+ I. v3 t0 ?3 N+ h
" Q" E; C' |8 O& g* T  W1 z
;;setup procedure
0 n. L; m2 d1 P
* I( b& ^4 ?3 b' gto setup
6 {/ S  m6 ^+ t1 Z4 T" ~) ]9 I7 ~0 k8 h1 X3 e* p) ]
ca
; O6 z, Z1 ^/ s+ b) c! y* f( ]

; ]8 a6 u: {3 K0 H5 A9 `initialize-settings
) U6 z$ }7 f$ K

( l6 a/ Y6 h* }crt people [setup-turtles]
. u* n/ ^# Q7 I% K. v
" q( A- P. T8 _
reset-timer
1 A8 }2 l- c3 K" E# x: R1 e
; s+ G4 l/ s9 L/ x& h" R
poll-class

, L+ a: o9 r9 g8 `4 S# y$ t9 g! ~$ n3 N; `9 S. @+ r, V
setup-plots

+ K! |' Q' O1 E6 n# e, j5 P! E- u* W% Z& p
do-plots
; L- x  Q! K  Z2 w; v
end
  M0 A. ^& A% P& q
/ Y# N7 k5 n3 D. g8 L; X/ eto initialize-settings
9 [/ m4 I. k+ H) h: ^" I+ u( W, V% j& y  H# W
set global-reputation-list []
, N5 G  @$ E# Q8 C
3 W( P$ E) g% L
set credibility-list n-values people [0.5]

' Z& C2 G% b5 N! n
9 p; @  J# v0 t+ ^8 Hset honest-service 0
$ d8 K: c' X% J6 C/ U1 O
, J( t2 f6 z* p" v- Q" k
set unhonest-service 0
: ]. k5 y- v+ D+ `3 O" y
/ V! @; H1 s, p0 y2 O5 J
set oscillation 0

9 c& |+ ]. n" f
) Z8 l: I- J3 vset rand-dynamic 0
/ O9 h, [1 A% |& F# v
end9 P* s$ h, x6 ]" x8 w4 G
! }! Z1 w* B) W& b1 z. T
to setup-turtles
8 n( D) ?6 \3 C- ?& Tset shape "person"
% [0 m, C% Y1 M/ n) Nsetxy random-xcor random-ycor
7 ?0 x' Z4 b  x' ^set trade-record-one []
. f0 Z$ ~6 a! F+ e/ u1 C# }
& j$ f# W4 z, J# L( O5 Q% N* @
set trade-record-all n-values people [(list (? + 1) 0 0)]
, Z$ H( e" a2 r0 q  e  K

% _/ w8 i: L: R" ?& @+ tset trade-record-current []
9 `4 }) m$ v! J' Zset credibility-receive []& g% q0 n* ]# J
set local-reputation 0.5# E4 s6 P6 F. Q* `3 U: W0 ]$ c
set neighbor-total 0
7 U% x  l0 a# p, P# Bset trade-times-total 01 q7 S( G, e: O& X) k) o
set trade-money-total 0
/ j0 G! }6 B3 kset customer nobody
+ e0 W  h% M! F" }* e' hset credibility-all n-values people [creat-credibility]
; x- R/ k. T, s- i) mset credibility n-values people [-1]4 m$ ]5 T4 M/ \* W5 G: L
get-color
) ?  Q: q; n/ C; c
8 i$ K5 m3 k5 ?0 o! W( p; C
end
3 l  t' J# R! D, Y4 m+ N2 d2 k* U5 {* k2 C  Q! {. A
to-report creat-credibility
8 u  S4 _' |( v: E8 n7 k$ H/ ^report n-values people [0.5]
- j' u3 n6 h; Uend. Z# S* Z5 a8 L. T; u. C) J( F
) H2 r8 @% f' _$ Y+ \* b
to setup-plots
7 Y. S7 u, l  E. k0 B! T3 w: v; k6 {7 O3 ], L! g
set xmax 30
2 |& R2 ^+ [0 X4 f7 K6 ?
$ Z6 A* O4 E  \
set ymax 1.0

- B! W1 `; Y0 Y5 b2 M% j' H, d, X2 M4 _5 \5 j& Z% m& q
clear-all-plots

. f5 ?8 L: q  \5 W' Q1 t! R# g6 y* y0 k3 J
setup-plot1
1 Q. G- j7 S7 q% G( \4 e# L) ~3 s

( g$ O; I! o* h; j* d( r1 W. dsetup-plot2
# b; F" R# T, t. Q

! \/ R+ v. H, }" @7 _  Tsetup-plot3
$ f; K1 F2 d  v3 T; C' N
end
7 `, v* C% ]1 M' s) r) i; N8 i# k8 m4 K9 L: v6 t
;;run time procedures) Z$ n) U: O# f( |3 h- f
! z, q9 l" |! h+ ^
to go$ a  A8 ^% Q7 z6 I0 \* F
1 o8 n; f/ ?' H  {
ask turtles [do-business]
4 I. \5 B% u! d& U6 O/ s
end
* a' a+ c) T+ w9 `; m/ |5 X5 N  l7 p! P  l: ^
to do-business 0 x  z& M0 w% j% D3 L1 R/ w9 j
8 `$ H" e2 D7 t7 o
* \: G4 F% E. i4 F% E% w" J# Z0 Y
rt random 360
8 `5 g. B0 h/ y; m% H
4 x2 a" F' J! \+ b4 M+ B
fd 1

5 q4 e; X. u0 o" m0 l0 q( Y' y9 }. ^9 Q; \2 h
ifelse(other turtles-here != nobody)[

" d5 `  o+ D8 h. e# l; ^
) j1 O6 v0 d4 m5 y2 P( iset customer one-of other turtles-here
8 M( A2 B' R  D4 W; u) Q+ a
  v  O* u3 J# G5 i* m, c
;; set [customer] of customer myself
, y/ C& @! k( L0 e% x
" W9 w, b9 g1 Y# N+ O1 ~. ^
set [trade-record-one] of self item (([who] of customer) - 1)
+ H+ y1 i. |7 r. M[trade-record-all]of self
! Y/ q$ i" C! d0 {- m1 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 t& `. l5 I' I$ o
: M; t. U9 M2 R5 T9 Lset [trade-record-one] of customer item (([who] of self) - 1)( W# p( z! w" D, i
[trade-record-all]of customer

1 U5 e1 O( P, x' @
4 T) ?& b4 M/ U. f6 c. V% G# _1 j0 cset [trade-record-one-len] of self length [trade-record-one] of self
6 y( v3 Z5 O) y0 [' O% _' d
( Y, @" z+ z0 p5 L* }* k5 Z' c- F
set trade-record-current( list (timer) (random money-upper-limit))
- M8 @5 O& J$ S6 q
9 S8 J6 U& p+ Q6 K/ a, Z
ask self [do-trust]
- ~4 _! P) s) Y* O4 M) l;;
先求ij的信任度9 n% j+ i' S/ f, }1 |& o9 D4 i5 q' B

# F# h0 b3 y2 f3 \. aif ([trust-ok] of self)6 }$ H  `. Y( j2 }; N
;;
根据ij的信任度来决定是否与j进行交易[
6 N/ g+ F: _8 X6 T1 ^0 V! Uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, k8 o) G2 q- U& T

0 o2 y# D" d) G% U6 U& D3 S( A[
, f4 U0 x) `, X: `

0 ?! y% H( t" w6 m2 b5 g% @do-trade
1 K% |% _8 o( M
; p( X7 r9 c3 N6 b6 }1 p* I
update-credibility-ijl

& K5 I1 L; R1 Q8 ^1 J3 C; P0 A  ~) u, G1 V1 {
update-credibility-list9 o3 I: L7 i) }: \

. b/ t6 L  C% I5 B
( b! R% K5 E6 o9 k; V3 x) Lupdate-global-reputation-list

" p$ I! `4 ~& y' g6 L, o) X' l' ~: h5 Y- n
poll-class
/ Q, M/ Q& X) ]' o7 T

  {$ T8 V. o5 n* [; z+ ]8 c. h! Fget-color
, W' V& d( n3 _$ e5 W

- y* e5 s8 g! r# v- h5 a]]
8 g& `, j& w6 p3 r2 ~  y* `5 s8 B/ O& U# J& S. i
;;
如果所得的信任度满足条件,则进行交易% m% N1 n3 Z6 w! b4 y

! y; ^% h, w# @4 R0 ?[
* D& M5 ~0 T; s( ]- t/ V1 k, P

- t1 E& H% J6 D6 J$ l5 O7 |rt random 360
" @. z& ^$ e0 ]$ _& [$ l7 y

. @* V$ a% o) `7 F0 k8 Nfd 1
% f6 ^# H) W! B7 T
' R3 E6 O7 x/ r5 w8 W, |
]

+ Q/ y9 q# h  }. o! _
/ @. F0 F$ K( z* Y; Xend

3 Y, @: M/ Y( Q. X, U
4 o- S: k% @; Y' n. Mto do-trust
0 j7 ~9 I) `5 T1 e4 ~set trust-ok False
+ L7 [* e) P& B3 p  ?' m" q* F4 W9 r1 C( J0 ~0 ~2 @0 p2 y, N

8 u! ~8 s% Q% ~- f* D( n8 I% P. l( dlet max-trade-times 0
  I3 w$ K1 j3 bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& _- @: M3 i6 I+ \: U$ dlet max-trade-money 00 x% f/ B: x) `% _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 I1 j3 s1 M; ?) v5 @) O, Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 p. E9 N2 U# V5 l
1 M% y' l( h# ~0 R2 r; J6 j) }. x5 E
' N' o4 s5 l  G
get-global-proportion1 P# _9 s3 M- b! p6 w
let trust-value( n, b; t( ^  Y8 L4 i
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)
& t' J3 V# b1 z9 j3 a
if(trust-value > trade-trust-value)
$ N4 t, |* u& I/ p* M8 l' H[set trust-ok true]2 t( X6 ]  u$ c3 R. u; n
end& x; g! P+ t; X2 V
6 |6 s+ ]- T8 z1 X/ z, j2 _: W' i
to get-global-proportion
5 b% b$ c5 T0 l0 d/ G0 Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& D! v$ e( ^1 B& m[set global-proportion 0]$ I" e1 B' V- i' X
[let i 0: s0 K- u5 O5 \7 f
let sum-money 0
* U; |5 E% a$ I% Q3 V3 t4 M' Dwhile[ i < people]
4 I6 B" f8 n4 C, U# i1 R4 S* ][
  D7 u4 ]% @. i0 v: rif( length (item i
* c& k$ U/ u/ Y1 ]( l[trade-record-all] of customer) > 3 )
/ b" F9 ^1 t% ~5 K% a
[
6 t* N: m1 r" Q! H; H& Jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))! v# p$ u. V  T1 h/ Y
]
0 B) W& |% L) v  `! Q# l]5 _& D" B- h& N/ n! `% X. e
let j 0
& D/ r, D. \# H" E" `9 N' I1 Olet note 00 M; G! D! {* R1 p+ K
while[ j < people]
% E3 b9 T4 T" M[' [3 |$ ^' _% j9 t3 P/ W9 Q  I- n9 O
if( length (item i' Z8 }; `: @$ c- c1 }
[trade-record-all] of customer) > 3 )
$ p& Y0 I* }( v9 h/ [! m8 a
[9 ~- k: Y( V  o6 k
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 `$ C4 l7 b/ p# ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 W! d8 R1 _, t7 G& e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 l. Q7 h) C* N) V1 B3 M) _
]
% _% I: s* r1 n* a' g]
8 q9 L: l9 e, M5 T4 w4 gset global-proportion note
& D0 [  l- P* G9 {, N+ |( Q# A]
8 ~$ l) R' {# }# k  ^end1 j) F  ]% P4 s! R

& n$ l6 N, ]+ Y( S1 X0 ^to do-trade# O( L1 b$ M9 a4 ?1 |0 k# \8 B+ {
;;
这个过程实际上是给双方作出评价的过程! c: q" c& x$ S) W  H7 [( G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 `% P6 C/ Y: e4 Q) `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& F: @" U# }* lset trade-record-current lput(timer) trade-record-current$ n4 w& O" S( i% w
;;
评价时间
# ^9 }. ~6 M$ _* q4 cask myself [; s8 V* r! Q5 H7 H3 |- M8 b
update-local-reputation
+ i! s" E9 J( E& d$ W3 a; }set trade-record-current lput([local-reputation] of myself) trade-record-current
* }/ u6 M& G+ J, j3 A# B+ h]
( }8 \4 S( ~; w& bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 z- G# b( k3 X5 R;;
将此次交易的记录加入到trade-record-one
8 C- V' R0 n6 s1 E, y" Y6 w1 ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! |! s8 ]0 @$ }0 J) Z3 A
let note (item 2 trade-record-current )7 e1 Z* n/ }1 r- W' `* T
set trade-record-current
- X& {- b7 J' D! m(replace-item 2 trade-record-current (item 3 trade-record-current))

' l& C1 g5 a% c* K3 u& ?& [% Nset trade-record-current* k' i1 N9 F' }: p
(replace-item 3 trade-record-current note)
8 j$ [  |, a  f* V5 i8 M# E3 S( e" O" \; X, V* |" z
4 u) V# Y5 d  F, K, {4 x6 K
ask customer [
/ H( {1 O, Y5 J: j/ m3 |* y' {2 jupdate-local-reputation
) U  h+ B9 w  n4 _* Q9 iset trade-record-current/ I7 D3 Y7 @( z/ i3 |* V  q
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ a3 F2 ]' A" V& z4 R8 J
]
% S6 G9 l* u3 ^- `- B- d5 `: ]. H! y; U
$ W! U, H' \/ `

" D& a, d4 [4 X7 g( I3 G( [9 M- Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 E9 l0 ?' R6 O* |3 h+ T
7 u$ h: d* p9 \) |: _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); K4 \. j0 x8 \1 ]  y$ I
;;
将此次交易的记录加入到customertrade-record-all
3 N+ i8 Q. n" e9 R! dend' v3 j, o$ \  q. N( k$ {$ V

; [6 W. P8 J$ n& U6 nto update-local-reputation
9 |  w" A  s4 M8 Y4 y6 ^% lset [trade-record-one-len] of myself length [trade-record-one] of myself
0 l3 `( K! [+ A
+ ]1 c9 P$ c  v& U2 ^( r
- q1 H9 {+ L6 g1 L;;if [trade-record-one-len] of myself > 3

  u' k2 }& C9 k4 q3 y1 N! Dupdate-neighbor-total" l1 d3 Z! t  W. a. j- k. M' ?; Z
;;
更新邻居节点的数目,在此进行' [! ~& o" K1 L$ z( {1 g- g
let i 3% ?8 `1 z/ ]/ M' h  K- b2 O
let sum-time 0
' c2 ]: ^2 Q9 Q/ g: U* U1 R/ b, `' p+ uwhile[i < [trade-record-one-len] of myself]; G9 m' X4 ?2 E! W2 @
[: o+ @6 w& L+ S) T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) d) m2 E: t2 h; F! P6 E; eset i
5 c0 y5 k) D0 m4 y' d/ S( i + 1)
7 w+ |  w9 }4 d. y9 W: o0 O
]
2 R/ |& q! `, ?0 s* b& Vlet j 38 r& {( I# F& A. t
let sum-money 0
5 T+ Y3 G: b$ p$ G# ewhile[j < [trade-record-one-len] of myself]
# v& x$ ~2 o; b& x% k[
3 K+ b- \9 R) G2 Jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)% O' C4 g' m9 X4 g( Q
set j
/ i# q, M$ G/ U' @1 `, k5 X( j + 1)
/ K6 I( i) }4 w8 j; e! n
]7 H; h+ a2 A' m1 G* T4 \
let k 3
" H. N/ Z% E. ?; clet power 0- d- p# f3 O+ A3 }2 T
let local 0
1 S9 V: L9 m  o! k, ]1 g0 Gwhile [k <[trade-record-one-len] of myself]
% e* ~" ?/ r% i$ i  n; m[
& o1 E- F& P4 i  @' i) aset 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)   ?" l8 U+ X# q4 s% V4 k
set k (k + 1)
  E% }- e' \& o- R]
2 \4 Y/ h# I" Wset [local-reputation] of myself (local)( h1 I) P/ q" O) a0 x
end
% F9 D- S3 R7 U! Z# S8 x: K0 {2 J; @" b( h( D  h
to update-neighbor-total
' {$ x$ W5 o) F; m0 Y# r" K0 l. ~* v% b' t1 q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( x+ |/ ~$ R* P' _# z  F' Y+ w& W6 ~
) T3 N0 O$ L& ]# v' H% r
end# l- h- x; A" @  G, _

0 M3 P( u6 Z( q: Ato update-credibility-ijl & j4 w& I/ J% \  b7 \) g# e
/ t: X5 p) }" P
;;
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。
) {( z, g& ]7 U7 {let l 0
* |% E; Y' L* Q" M) d: Uwhile[ l < people ]$ ?1 R* X8 e0 v5 W  [
;;
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
% t2 ~, L# j  Z; h" ?" f2 `[
7 Z% v3 |+ R4 _0 t6 U3 q1 ?let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ E8 h0 n. }" I5 }if (trade-record-one-j-l-len > 3)
  A* F" F) V  F8 R  x[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
. q' T1 L0 C0 V, i/ plet i 3
* I! j3 v9 H, Mlet sum-time 0$ P% \, L* U" n' E* K. P, i& ^5 W
while[i < trade-record-one-len]
7 Q( m- {9 E) H) H8 r) `[
/ p: W0 e5 v" n% n$ I4 z  S4 t; A4 `  [set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): ?- H2 g% P4 O- T# a3 P
set i6 |% Q( ?: A: o4 @
( i + 1)
2 e! O# }3 x; w) q  p
]
. J- _) Q/ @$ a( Clet credibility-i-j-l 0% f- N5 t* n" q
;;i
评价(jjl的评价)+ x1 X/ t7 L& E' b) z
let j 36 R* L9 [% s: w# w8 a9 f
let k 42 F$ M( L/ {, w
while[j < trade-record-one-len]. `/ E/ Z0 l0 Z  `7 P6 B
[1 B. g- r' c* b( [
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
8 c" f' T" u# R1 y  sset 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)& q- ^/ o% |) x0 h( Y! [
set j
( {/ F$ `+ c* d* M6 L: U( j + 1)
+ R( O0 K. ?/ a. q
]
# ]6 X) z. a8 N' Qset [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 ))
- `9 h( @* P1 q4 S1 K0 `
8 N( E& D$ N3 Q& G: n
( n7 I$ b9 f( x/ t! k& |) M' c* I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& y- Y. u9 X9 O: Q0 f! |
;;
及时更新il的评价质量的评价
" y1 K6 H( `1 m- M2 eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% ~3 s: Z8 Z0 n! J! s, H; ^0 N% `
set l (l + 1)$ q9 c7 {2 ?0 C. I# i( h
]
1 ^; o4 C. K7 Q* T5 B' N( d4 Dend
! V9 H! p) U- M, }
7 K0 D* U) P" O! g( e5 d' Uto update-credibility-list
7 ]  X1 v1 H9 `, D5 ilet i 0* R' e9 ]9 T4 E
while[i < people]9 G3 j0 b, e$ o# c
[8 K% E( f; Y& c. Z
let j 0' p! b% _" Y) b; k
let note 0
' Y' P4 B& M* t* R5 ?' ylet k 0& F+ h4 g7 V2 U8 [
;;
计作出过评价的邻居节点的数目: k$ s2 d) q' }8 Y; w2 X
while[j < people]& e4 H( ?% I4 C1 h
[
8 v9 {/ D9 j' j% Yif (item j( [credibility] of turtle (i + 1)) != -1)
4 _5 S2 P7 e6 D  [; d! a( `;;
判断是否给本turtle的评价质量做出过评价的节点
6 e  S* f0 _; l[set note (note + item j ([credibility]of turtle (i + 1)))
! I! ?4 s0 S9 r. v, g$ y$ k;;*(exp (-(people - 2)))/(people - 2))]
$ _1 p* J  P1 _% c
set k (k + 1); j, c5 \# A& w2 S+ x" l4 Q
]0 F4 J" w) A* [
set j (j + 1)6 I& |- v* R+ N$ r" L
]$ c- j3 [+ a$ h7 q! B" z3 B9 ?4 P
set note (note *(exp (- (1 / k)))/ k)/ ]5 f7 T" l; x5 R8 \8 r
set credibility-list (replace-item i credibility-list note)
2 L8 }6 @, [1 f0 |3 tset i (i + 1)2 A9 N" ?$ ~. s4 m
]* c$ @+ N' r$ d, @5 `
end
& o/ R5 I0 _8 Q
; x5 [+ n( p# `: `to update-global-reputation-list+ B5 k# z. f# w5 H8 _7 y2 b
let j 0
% F; E- e4 r+ Z/ Iwhile[j < people]  u- [8 |' ^' Q8 O+ L
[
% E& C- Q  z6 J: p- _1 xlet new 0& S% z& E# Z) }% W9 N6 g1 ^& t. V
;;
暂存新的一个全局声誉3 M# w- I4 d0 P+ l8 g
let i 06 v5 E: W' X; z3 {
let sum-money 0( i( c4 |* l: E5 S
let credibility-money 0
4 S$ f% @! o8 W3 \$ ]+ Dwhile [i < people]
0 `3 |+ P3 s: k* \, n3 p: h- O' V[
! ]% _7 j/ E2 a' [8 ^set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* f. o0 E6 U* {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 Q% a* z% ^; ^
set i (i + 1)
& L$ H8 H2 ~* {3 J) y9 @/ y' b]
  G0 _$ Q0 h1 p( T! h+ ^let k 05 D7 e7 v. D& h( z# H
let new1 0, R, ?2 m0 T8 }! k9 M7 l
while [k < people]4 q8 R: G  y+ p8 k8 Q- {' ?3 {
[
! j, L9 s* Z/ ?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)7 w  X$ L7 ~2 H" O6 h
set k (k + 1)7 R, ^6 a, v2 \# K( \
]6 X0 G& X# K) ^' c1 C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) ], `4 U- _" X7 Y3 yset global-reputation-list (replace-item j global-reputation-list new)
! V( W, ~: U1 m" O; G0 rset j (j + 1)5 Z' i/ t$ a( V% s
]
+ e0 O! n: B1 Wend
8 O2 {3 \4 {  ?/ ]; Y+ ~5 K' r0 }4 Z0 J* E* f9 z; r

; N; r- [$ V6 s+ N. H
: y" a5 E" m" c3 k6 Zto get-color
8 n) |$ y. {# {* ]8 j
* W; V( S" F1 ~set color blue
" x  f( ]& I" Z. _2 Q$ A  h
end
5 Q- b) q2 l. w2 n' j% X8 J- K3 D5 R3 B6 J$ v5 x8 |
to poll-class, y3 }1 p" S9 g0 k9 y
end+ u( ^  ], E. z
9 N6 A1 I  B8 @4 h# P) H7 k
to setup-plot1) s, S/ `' J1 D! D# M) ^& `. \" A

# Y  `9 B6 ^2 ]% [set-current-plot "Trends-of-Local-reputation"
4 h! M8 k& x+ A1 b/ p, u$ j3 p9 g2 X
, S% T- g& Q- e/ k1 p8 Z2 }
set-plot-x-range 0 xmax
) X+ w2 \) |2 O

3 w" H/ b  W$ iset-plot-y-range 0.0 ymax

/ h% l& S! j8 v, |: p: y" Hend" r9 C! J! C( n: P* u9 L
+ O5 _- l8 e% k* `& j% v) H: g- s
to setup-plot2& Q" U; b! V! b+ R
% q4 _: z3 Y" j0 S  X1 u
set-current-plot "Trends-of-global-reputation"

' H- B" P& d# V/ ?/ ]4 p
+ v3 d3 E8 E) `; _9 _( y3 Pset-plot-x-range 0 xmax
- [) c- L$ q" f8 h% b

9 f* R, y& _- [3 N$ Kset-plot-y-range 0.0 ymax

, N9 Q* h: c. V) i) I" I) ]end
( Y$ j* I3 |( d6 A+ F( B% V# d) l" |+ b  B* N8 f* b" i1 C
to setup-plot3
( }$ ?* O* u  I6 k# a$ s2 |+ f4 ~" E+ S
set-current-plot "Trends-of-credibility"
% N7 b! U$ Q6 e3 T
( D* x' U: Q6 {2 M$ x
set-plot-x-range 0 xmax

# R6 v  I* _& T1 T
6 w5 h4 u# g3 qset-plot-y-range 0.0 ymax
4 J/ d8 w" O9 m6 F- @1 u# L- [
end
# G7 N7 l" Z/ R5 B8 I7 c+ b/ @7 b, t9 u, y& @, L1 R1 P
to do-plots6 d5 G. {4 Z, @$ Q! M) `, K1 K
set-current-plot "Trends-of-Local-reputation"
' r' F, E1 s9 z% p$ Gset-current-plot-pen "Honest service"; j( R9 Y4 X' C4 P: ^+ ]9 c9 T" A
end
* ^8 c: M7 ^4 N9 H# H/ u- N) j4 i, O4 R  I& D# F
[ 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., ]1 r  x% O; T3 p% |# i* `8 h8 J6 N7 h- e) V
0 E; O3 ]- l, s; P* f
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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