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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:
1 Q- ^4 @. J# g; @to do-business
& h( e+ w; F% h( l6 g0 q rt random 360- p  K: t+ E- U$ D
fd 1( G  s$ y/ D8 X# B. Y6 Q1 B/ T8 J
ifelse(other turtles-here != nobody)[& N7 Z! v' j+ [. K) b$ R% e% @
   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.
+ L0 F2 r  \, B# F+ b8 o' h; t8 a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% Y1 b- D/ O. n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 X( @, A1 ]6 |! j
   set [trade-record-one-len] of self length [trade-record-one] of self* }7 A1 ]) \. @# b
   set trade-record-current( list (timer) (random money-upper-limit))
) t3 g- C( [* ]/ Y, u4 s
) [! K7 Q/ p% p, q% i问题的提示如下:
/ w7 X5 ^* q2 e7 [  w3 K: {0 G1 U. d
- c1 }4 h3 P/ S; v7 `- xerror while turtle 50 running OF in procedure DO-BUSINESS
& ]2 n& P6 B* ]7 }0 f4 P3 h  called by procedure GO
4 x/ J* ?: d: h( [5 J" R. j6 t) COF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 d1 u( `2 [6 l/ C3 G: w
(halted running of go)0 _% [2 v# |9 @7 X
, L6 z, \7 P8 L6 a: q6 v" Z
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~~
; z  R2 n5 e6 `" m" C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" \/ J  c+ g( a) w1 G, L
globals[2 t7 @9 o: A  S; t- v3 b0 u
xmax
3 q2 m4 r3 L3 g" \) v! U8 Q# dymax5 U! }6 }1 T+ Z
global-reputation-list; x  X7 J( ^2 n

) L2 ~" j' i. O: t2 C; D8 |' t;;
每一个turtle的全局声誉都存在此LIST) }  t2 N/ m* Z, b7 t2 `
credibility-list# p6 L0 ^' G& W  _' [" J
;;
每一个turtle的评价可信度
6 S( U+ V3 S' T1 Fhonest-service% l5 s% y- b8 X9 C0 B8 R
unhonest-service/ k# [! Q4 F* [$ w# \! A9 M
oscillation
* x8 e; L5 o  z+ prand-dynamic
) n1 u0 T7 F: ?$ x- s, w& L; U; J]
4 h, I% j8 Z  @3 l+ }% [2 E( V% T# L, ~% [# ]* z
turtles-own[4 l  A: x! R6 Z5 T0 d- ^, Z; ~
trade-record-all
$ [+ q' {8 c; F7 m9 @+ n6 ];;a list of lists,
trade-record-one组成$ ]- n$ J$ C, u7 {( e; Q
trade-record-one- U$ t! m2 l- [1 I; c/ c, 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5 p7 R( R% X7 o! o
& l5 |' p: P. x
;;[
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]]
3 L0 }5 E- _& e; S, ytrade-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]; V: e7 w. L- i  |4 j2 M
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
, y5 y# }+ r+ `+ S# M9 u; kneighbor-total& q( z/ W, V. W8 I  w
;;
记录该turtle的邻居节点的数目( U4 o  ^* h- f/ g" O* V
trade-time
1 T5 s" Y. n. v4 L;;
当前发生交易的turtle的交易时间
+ _. k9 i' R+ I8 F1 Jappraise-give# p9 \" ^. V: c+ B6 |
;;
当前发生交易时给出的评价$ [# q0 e( X/ O% R
appraise-receive
2 f4 A6 s8 l- @* T3 k& j;;
当前发生交易时收到的评价9 l( |* L2 }3 _7 ~0 ]3 K3 Q4 m9 T3 y# X
appraise-time
, N3 w: U' v2 }& a7 R9 o;;
当前发生交易时的评价时间
( @  V) A4 o/ p) n6 q9 p: vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 k+ I$ X  M8 l' ^  Y% Rtrade-times-total
. m0 m4 g2 ]4 D4 O4 Q! m+ {;;
与当前turtle的交易总次数
. \3 _# D4 D, o) d% v, j  p1 ]trade-money-total; ^- I. O& j, G. `% Z$ r
;;
与当前turtle的交易总金额2 g. y; z0 u; }3 o9 i1 I
local-reputation( `7 {6 _& X$ D; S5 e3 {
global-reputation
1 Q! R3 Z5 X% ycredibility
8 @1 Y% U" W* V  H0 T) Y( G9 a;;
评价可信度,每次交易后都需要更新$ H, z4 I! x5 J/ k$ z1 n* g
credibility-all
' u: h/ l0 D3 A, ]! f7 e5 \, ~% ^;;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( ?0 y- a8 U( L$ {
8 K: F: Q/ b1 o/ t
;;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: J! b2 f+ \4 \1 ?6 I  i9 Y
credibility-one
5 W: H: ?* x; i" l; m' F: e;;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people8 S: G, \7 V& C9 ]
global-proportion: q2 a) K2 b2 W6 l8 L
customer- H5 d# G0 n+ n
customer-no
2 d+ s8 g: ^. Utrust-ok
+ A9 n2 F( H. i+ T( R" }trade-record-one-len;;trade-record-one的长度, D; ~5 N, B+ D5 {/ j
]
/ c# S* }0 z1 e
( U/ w, M9 D& z/ G7 K4 `;;setup procedure
# K, G* F" Y. L4 Z. ^6 k& `' W5 ?# Y
% [4 P; G9 ]* n! Tto setup* F" A/ W- h' H. R& p; p' O
: ?  P) I& r0 S0 M, B1 _; G
ca
4 X. B8 i! N! j
4 \5 v8 W, s0 ~1 C
initialize-settings

: t9 z/ {, B' ]
5 b5 w/ m7 c( ^' l! Z5 f7 \: fcrt people [setup-turtles]
' ~$ I( B# z" U0 F: a8 C0 J
  a* b3 J& K- g& I- H3 n/ d6 d' }
reset-timer

8 R( \3 X4 ~0 f9 s8 \$ k" z( v& P  {0 R, u* v! R4 P
poll-class
0 k5 H! Q  H  ]7 b( D

; S/ X" l# s2 psetup-plots
8 n) Z- s! l1 d  h

" h2 S) T- p' S6 _+ s2 bdo-plots

3 r7 \9 i- z5 Aend1 G+ T: ?: V) t" y1 ?; k

/ k. x1 G1 _' [& d# xto initialize-settings' c' ?  P9 k: W7 C* E

! }9 Y9 F  E# X& T5 cset global-reputation-list []

5 F# s2 t- G9 N9 u* D
% T! W6 j1 R. P+ y& I, p  Uset credibility-list n-values people [0.5]

: X/ p; b8 b: \+ Q9 O7 E* s2 u- ]* Q6 V$ F8 e  H: R/ C! e
set honest-service 0

/ y8 q7 ?* \* ]$ S# ~5 U5 A- [7 U' T$ I' ^! V2 z( b: N
set unhonest-service 0
7 Z5 I$ r/ d/ Z
* S3 }) e7 o+ J, j- n
set oscillation 0

! H: F& ^% i5 [1 S( _' ?
5 p5 T+ N* @; U% @( Yset rand-dynamic 0
2 y" i5 h6 q) k3 O
end
, u# @9 [, Z2 z  w( t- R' I: W
/ Q) h2 d( Y% u. W6 ?/ Jto setup-turtles
% b0 E1 r8 s+ E4 ?set shape "person"( j6 R2 r5 r* Q$ a, P; [
setxy random-xcor random-ycor
/ e* h8 F( K7 o) j4 L8 R* O' O% k$ _' zset trade-record-one []
5 Q3 Q) [# K/ Y0 |6 {2 Z/ H; ~

8 P/ e4 R  J, f9 {! M; c5 Qset trade-record-all n-values people [(list (? + 1) 0 0)] * p" Z4 {4 W$ c: j$ j. C
8 S9 I4 e$ B* @3 G' |! N  z- j
set trade-record-current []
& ?! J* D" g6 i# N/ Cset credibility-receive []8 E+ u( g4 [0 t: K! V2 F
set local-reputation 0.5
3 r  V5 K7 e. {1 f5 V! zset neighbor-total 0: c! L8 ]- b% @+ D
set trade-times-total 0
* \1 g" J. F( x+ D5 q" L$ sset trade-money-total 0
( t1 a! ~* ?$ l% k" Z, a0 p: ?1 a7 ?$ Zset customer nobody/ e! y8 y) V9 B/ m* m
set credibility-all n-values people [creat-credibility], L/ V4 \' y% ?" C
set credibility n-values people [-1]1 m+ q) s# \9 _- G. L
get-color; o4 ]1 Y2 S  B3 f3 E6 ^
( W( n: q$ X' ]) m% u3 l
end
; T# l2 }8 T) e7 \7 Y! b7 s# T( H' x3 y8 R
to-report creat-credibility6 M. P. A6 ^4 g  b# a; ?
report n-values people [0.5]2 j: b+ A. a2 q5 R: E% x
end
1 Q5 z- M( G& e' g+ N2 R5 O5 H3 g5 _8 g/ K! ?
to setup-plots$ D7 n! l7 \* n

) T% L0 I, K3 ~* tset xmax 30
) _# D0 ?0 A7 J3 z0 E
  P% D. r" \4 P# D! T. i
set ymax 1.0
# [) d! U1 q. R$ H- ]
/ `' f3 t6 M$ B
clear-all-plots
" B3 {! C. f2 n5 b+ ?! }

$ Z: G& W- r: G0 J/ asetup-plot1

4 {! T3 p9 h, M" p+ a) t
0 H9 e0 \( @1 @4 r! L0 Fsetup-plot2

' V3 ?/ g1 F. w( G
3 w6 S* l. d$ e3 i0 M3 g! esetup-plot3

2 a, \% Q8 Z1 G1 i! pend) W0 C8 p  `0 M" P0 |0 {' |
/ a% I9 m; V" e
;;run time procedures3 ~: C  L6 n8 b. o# `* |- ^
6 W! P3 O8 |0 |, L
to go7 M5 W$ a5 c& H) N3 ]9 n2 J
4 C' h; u& Z) ^: C8 C
ask turtles [do-business]
! {  B; y& {0 K7 s2 }% n: z
end$ [9 O! z4 Z7 ?4 b  |
& L) x  [0 @- I+ Y
to do-business 6 |! N* L! t/ b& X2 J- n

$ \7 u8 D/ a) R, A8 v( G6 f: x! r4 z+ X/ ]
rt random 360
$ U: U" s# l; _6 p; m8 ~
- j# ~1 O8 Y9 A, V& F: }8 L9 P
fd 1
' v# o% V4 K/ m- M
7 C* v% l5 L1 K) [# r7 G8 ^3 H+ |
ifelse(other turtles-here != nobody)[
# h7 x1 F  v; N

+ _. e$ I; V: z) j0 ?4 uset customer one-of other turtles-here
$ m4 ^. A& n% e  r
9 F6 F& u. o2 K( y, T! v( n' _
;; set [customer] of customer myself

# t  ^. E, i1 D% i6 i) t
& S5 J6 Q% P( x9 V. s% pset [trade-record-one] of self item (([who] of customer) - 1)) G# G! @" b6 C1 _
[trade-record-all]of self
9 y4 ^1 W% M: `* ^( `8 G9 U) c;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; E5 ~6 R; Q. b7 M- o7 t- l. U4 i4 F  `  n+ @) _2 I5 \6 ?
set [trade-record-one] of customer item (([who] of self) - 1)
, ~: q1 p' f" ~4 f) Y& C4 v( D8 i$ m[trade-record-all]of customer
: z8 \0 H0 m5 X6 A( y

! D. }* c% r. R4 i. k; K& Q* bset [trade-record-one-len] of self length [trade-record-one] of self
9 l* |: q- Z' u) n' Z( J
+ ~- @0 m! X/ i8 h- a
set trade-record-current( list (timer) (random money-upper-limit))

( }- ?' K8 h" k$ V; d/ F
$ v1 u8 Y& V) [6 M. hask self [do-trust]+ t$ f( w8 t9 S5 q0 S& C
;;
先求ij的信任度) H" a& Y. d- i  z5 P' X
& z" Q, a8 G9 C+ M0 a4 s% ~
if ([trust-ok] of self)
. x) u. s  M: R8 m;;
根据ij的信任度来决定是否与j进行交易[
: _; q9 c% C, F+ Pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( b2 k, a: c; s1 H- O* m4 \# ]

, l4 ^7 n+ G$ ^% p( q[

% a. g' v( @: F) R3 d7 }' b5 t1 D( w$ A$ S7 U# P
do-trade

' {# H0 T1 p% o; |( G7 V' d3 W/ x9 V* l' ^5 P) m3 w( Z9 ?
update-credibility-ijl

, d* ]+ F! }5 y) j2 H& H/ k# \% a  I) i% a1 V# b9 P
update-credibility-list
1 E+ v$ O0 [! u/ V4 u: t
$ k! }1 Z" L( ?4 ?, J" p% i0 c

% \. H" [2 ~" }$ mupdate-global-reputation-list
% U% s% S) o6 J$ T

& M; U9 v0 Z! Y) d" B0 e! l! epoll-class

( B7 ?! m0 U( W: F' e/ \) w9 v
2 C8 z3 f- P* v" R; T. q! I/ gget-color
, ]$ u. W  s- `; M3 K# p+ N& S
1 C% a: L% }8 a. ?
]]' @' E( Y: Q& L! W
! n9 k2 c! v% S: ]8 x' Y
;;
如果所得的信任度满足条件,则进行交易
9 r7 I0 ~# e; S' h) j8 m; n- f' B- f* b! I* W% h" n5 h% x# v
[
! p) P0 D. A2 f+ \9 D
9 j. Y3 `, `. Y
rt random 360

. t; |- _" A2 f, i8 k9 l6 k5 J3 B3 r+ a; |7 x4 ~8 o! h- }# ]
fd 1

& ?3 `& v* ~+ h% C5 l, J) a7 ]
9 T3 \6 |6 E$ G" P]

1 y  o! f% q: L6 Z! X/ S" P9 X1 R3 l; a$ i6 B) ?% M# D
end
/ g; \. d# O2 {: N1 _9 A# ~
; K/ Y7 y8 S$ }1 X. s
to do-trust . Y% ]& ]/ B% R1 P, [$ Z. Y, v
set trust-ok False: P7 E9 |! o  s) H2 v+ c: o

$ Y7 O  u0 E: b0 ^4 R
) \/ V4 w2 ]' U* N) |
let max-trade-times 0
! |: y+ x( A# V# l8 t  e# {# Vforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
( A: L9 O% }8 B/ W/ U+ Clet max-trade-money 0
% j: ]2 I: ]0 G8 j+ P5 sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 c! C* ^  V2 n6 W3 }let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* z& Z/ X  s( U
! R- d. l- @2 L/ n% b
3 d& ]; m- ?& P( P
get-global-proportion/ T2 f6 ]- `9 m8 i6 O
let trust-value
5 q# S" M2 J+ T+ k/ hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 H1 E& q/ `7 _4 O. uif(trust-value > trade-trust-value)7 Y) d$ ?1 z' h6 i: k+ X& ?
[set trust-ok true]3 ^1 e8 H7 J; x  o- m  u
end
% T! ~% r2 j2 Q/ w' g0 N9 c4 Q- g/ l# ?9 S: w# E3 E: y! R# K- J
to get-global-proportion7 H7 v/ z( J, [; n8 i) b1 w3 B, w
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. Y/ Z) [* Y8 \2 y; {& N" o8 e[set global-proportion 0]
; O0 t  ]$ n( v' X  i[let i 0& {: B- T1 ^& m4 @' C5 J
let sum-money 0! P% q# S- O5 }
while[ i < people]
0 ^. W: N( c$ P[8 V1 F7 Z/ M3 v2 F
if( length (item i; z, q0 F% b8 Z2 g, D
[trade-record-all] of customer) > 3 )

5 l% d+ T. o3 J[) z0 ]* ?. U% R# q: a5 p5 x9 o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, Q' k3 Z" E& G% U% z5 K]* c" U# k- R8 Z7 |+ I
]
6 w& g. t: q% W7 a% tlet j 0  x/ d- c/ `& U3 _% O9 Q
let note 0
3 H( p2 ]. \4 N2 Ewhile[ j < people]0 O9 ~6 b7 j1 R5 ?0 l0 [+ m
[6 r9 w1 @- y* e
if( length (item i
8 `3 J- K; b  M7 X[trade-record-all] of customer) > 3 )

* b: Z! Y8 G" T( Y[$ y3 j- {! X2 e% T! ^7 I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 s; C; s( Y1 e) |& b; I
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 I5 l2 u7 T" a5 V, t: a' L9 O
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  n& L% Y. m3 I* |$ x% a- W2 Y
]! j4 X4 l3 S" U3 P& r$ ?  L
]. i) G# F9 ?  E/ w7 g. w" I
set global-proportion note
0 d7 S1 N/ h) F: V. M* B]
& {1 u1 T7 i) N% E/ d# t5 Oend6 e7 o& Q) b( w8 O( v- w+ L
5 ~; y6 j$ N, M1 n5 G0 U) t" E
to do-trade" G; ^, V9 H- l0 i+ ]( ^
;;
这个过程实际上是给双方作出评价的过程
% C( ?, ^4 \, l+ i1 W& ], Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, B$ l" ~) r! }7 d8 U. v. W; Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ L+ t8 g9 N# b* ^6 @
set trade-record-current lput(timer) trade-record-current' U8 f# ~; X5 ~8 ?0 {
;;
评价时间
9 l1 G& d% F* `, R7 ~ask myself [$ T+ \! h7 ~( M, W2 W( @& @; T
update-local-reputation
+ u# e9 d& L3 W( a- E7 b) iset trade-record-current lput([local-reputation] of myself) trade-record-current
; \4 {# P  B! o( A+ k; e/ }7 U]
1 `, W4 h+ E  ?3 D" sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 A" Z' o. B1 V( H2 b
;;
将此次交易的记录加入到trade-record-one) t  z9 s+ T0 n) G% N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); i4 z( y6 i# p. ]
let note (item 2 trade-record-current ): v3 {! M0 E" h# O. h7 P* X: e; ?; x
set trade-record-current
4 ^# n, Z/ y. O- r" `(replace-item 2 trade-record-current (item 3 trade-record-current))

* a- _; t4 q2 |4 T/ |set trade-record-current
" x9 N3 I7 w& r' I(replace-item 3 trade-record-current note)
' ]2 |5 J! Y% n2 X! x0 V' [; r  L  C* R# l- N6 u" Z

* ?/ q; j9 I6 [- w# W2 u4 kask customer [
! b. F6 F  k  o! W3 \update-local-reputation
9 K0 h% p6 v: Bset trade-record-current5 ~( p% `& e: R. R1 b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( m; [1 v; L9 K- J' P$ l]# y: E1 q" w- K7 w3 L1 U
$ S3 C5 L! e* {) v+ k0 T) |

( d6 E2 A0 G4 Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 R2 M2 M  o. h9 E4 q$ X$ f6 p

8 ~6 j+ N" Y7 y# T  uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
7 }5 J% h* q  r* Z' c7 x;;
将此次交易的记录加入到customertrade-record-all& _+ H5 w$ i1 P8 P/ T/ R, r
end
/ `" D& G' G! N5 r$ i+ C, p! U9 R0 t6 b3 M- p' P0 I  I/ f1 w8 w
to update-local-reputation
# ]# _& {7 V: E, p3 \' zset [trade-record-one-len] of myself length [trade-record-one] of myself
1 C$ X- V( B+ V* Z8 S. I, U/ \4 l' S! x8 e" M2 R8 A- G7 S2 i+ t
+ S) H* D4 ^, Q7 b5 f! l; S
;;if [trade-record-one-len] of myself > 3
3 v9 r3 v% a+ v* A& V4 y; @' y
update-neighbor-total
& M! v) V8 o+ O% L( ^% B3 p;;
更新邻居节点的数目,在此进行
' a& P* b9 Q9 `. N0 a( Y$ j$ Wlet i 3& z5 D) u' E: N) B  ?% [9 a
let sum-time 0
& n- e+ p8 @  @* K' pwhile[i < [trade-record-one-len] of myself]
7 D) [" }" X- T: z[
0 e! j+ V. y3 K1 s  k% xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 ^+ i- [1 }) k- V6 a1 o' Y$ Mset i- w+ L; J) N4 @+ ], U( l) \
( i + 1)

0 ~8 r3 w( N4 P9 `]
1 B7 r/ \" o4 K! V! tlet j 3" G- H  {' u8 c" L
let sum-money 0
" ]6 R2 q3 Y: T/ \6 bwhile[j < [trade-record-one-len] of myself]
8 V9 ~: l% C$ g, }8 |[; Y1 O& @  P2 F0 k# h1 N, ?
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)
# B2 Y! s% x8 d7 u; Q0 _set j. a6 W) e. U" F; |* B; w
( j + 1)
0 w8 V% O# m% e% |: H
]
% L8 |9 G7 ~) e2 g0 ~let k 3* c) ]6 E: ^  ]  G- T/ e# o: Z# L
let power 0
; [  w  \' R$ N+ R. q! }* ]) o# ~+ V4 hlet local 0" y8 _6 S* |( e2 u" W! `- N+ V
while [k <[trade-record-one-len] of myself]8 R9 _, o( M, m7 v6 p; Y7 c9 F
[6 x; U7 K) o. z. T9 G, \. S5 b
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) % S8 e9 e7 i9 u9 `: O8 v
set k (k + 1)
$ O+ d1 c4 t! l]: u7 j2 r& Y$ N
set [local-reputation] of myself (local)
; B+ e( ]. t: ~end
+ u9 ]% ^; q' c. B/ H
- j5 h' c! V3 H3 o9 G1 {  Tto update-neighbor-total
* W5 ]& P$ P/ r& _  T4 {: M* R8 O. `( ?1 R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 h/ `0 M9 ^8 L6 m: K

9 L! b3 ?( m9 R  x; B

" q& |, ^. j$ O: t$ Send: e4 P, K! x4 p

! o1 A) H# [5 K0 d+ E1 K7 d2 }  Bto update-credibility-ijl / D5 W1 k' q. H, n/ Q; e

3 z& y% @8 |3 [- A- i$ H6 q1 }, S" f;;
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。0 _/ j# `) S+ O# J+ p! ^( I
let l 0! e% ^3 j6 B& y1 E8 \2 `) w
while[ l < people ]
+ F4 r2 d  H2 l;;
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8 y: }! {. P. V' x. V
[$ v6 r  i! M. i1 X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- k' f! g1 V7 O/ ^
if (trade-record-one-j-l-len > 3)
) a# Q; }+ H1 q3 z[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one8 h) X- z0 E  R) m5 G1 a
let i 3% B; W$ w- B9 B; y3 g
let sum-time 0
3 y* @# f2 g9 I! c7 K0 Qwhile[i < trade-record-one-len]
0 A0 x' g) l, A[! ^% p( }2 \+ y' E% b
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 R' a- R% ?3 y7 d: ]( lset i0 [5 H9 b) I& e( C1 x
( i + 1)

- A" L9 V! W" H]
% P( P8 ~" C# W" i: mlet credibility-i-j-l 0
5 ]1 Y* c# D- K( }7 t1 c& G;;i
评价(jjl的评价)
' R/ `! M/ \+ p/ `1 ?. P, nlet j 33 ?7 o8 {! @0 A6 J
let k 4- s+ U4 S( ~+ s4 s; C
while[j < trade-record-one-len]
  h2 q" V! O+ w* a1 X* l6 {. b( r[; {7 u, d  Q0 }+ t9 N
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
; C$ c" n- i( s5 I+ c% n2 ~$ q) L# Gset 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)
' D$ t* k+ M* @2 C5 p, `! B; |( Lset j
2 L0 p) u  p9 \; Z9 a( v( j + 1)
2 ?) e1 z/ h' ~+ d7 z; f* p" H
]) D6 j2 Y6 ^% U$ S* R' p8 G" k/ 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 )): d. r2 \. M+ W; h$ Z$ l

! O: J* U) j' Y4 r$ x

2 T7 N& {2 v9 \6 T; Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ S2 i% V7 R1 c- q
;;
及时更新il的评价质量的评价
# _: G' |  t. ]4 t) T6 Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 O9 @! i( N' {1 p3 [$ i# `
set l (l + 1)
) I$ v, B1 A$ E, Z. O( c7 i% a9 a]3 z+ a8 J+ }: e& B
end
6 {" ^& b4 H9 i& C
/ s8 P( {7 k  U4 z  f- Qto update-credibility-list3 l+ e# v+ J* g( E7 Z, k
let i 0
2 y) x" b) \2 D* \while[i < people]$ J! o* n" L0 B1 s
[8 a$ w8 O2 c. ]$ b0 V' c1 _! {; f  a$ G
let j 0
2 y& F( R* O, A/ h7 q9 `, Ulet note 01 n( V2 g4 U& K
let k 0
/ c' j! F/ Y; u- j2 f% [9 N;;
计作出过评价的邻居节点的数目. V( o' W. I5 E4 f( g) t3 ?
while[j < people]) d9 Z, z1 j* ^: a% N- R( L
[6 P& L; ^3 L) V0 j) H; z
if (item j( [credibility] of turtle (i + 1)) != -1)
: N5 x8 }6 w9 |: g;;
判断是否给本turtle的评价质量做出过评价的节点
8 S! f, t3 l' t# Y[set note (note + item j ([credibility]of turtle (i + 1)))
, |* i+ B( S; A4 U, f;;*(exp (-(people - 2)))/(people - 2))]
: x  x! ~8 e, \+ K8 K: [3 q6 Y
set k (k + 1)
, p; S4 f5 p3 E  }- @]
. t8 W- |# M; Bset j (j + 1)) Z. X# M0 C2 W7 I& y$ G$ I
]
# k# I* _+ O; s* sset note (note *(exp (- (1 / k)))/ k): v% [- p  |' V% _
set credibility-list (replace-item i credibility-list note)
1 X# p- ]# D, i8 M+ W( Rset i (i + 1)
( l& [5 e6 J$ s$ f6 L& @9 Z. W]. F2 l% Z. i9 |; ~+ `
end: p& g. O* W2 z( Y
  n$ B2 ?' F7 b$ B" R8 b/ K  Y5 Z" G
to update-global-reputation-list
# r3 {0 K: J, [$ X. y" e" elet j 0, P2 I. J: c; F$ U$ o3 z9 L
while[j < people]
# L" x8 h2 s5 g- O; L[) L+ [! X) U7 s5 e
let new 06 C+ k/ a' _, l: X5 T2 K* S: W
;;
暂存新的一个全局声誉5 G$ l' N) B$ J7 q" e" \4 \" t
let i 0! L6 y* w/ I: j. }% C) N
let sum-money 05 U8 \  S. O2 A, j
let credibility-money 0* Q5 A* g/ E$ q3 G
while [i < people]
( s1 x; p% z! R5 `2 I[
0 a) D+ R! z; q& H% R$ a) Sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 `  D8 U2 R# ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  M( z4 v9 }) J, }! B( Oset i (i + 1)
/ ^$ Y; Y% J8 x* b* O$ g3 R0 b3 U]
2 }  D2 u1 y7 ?' p( m& Qlet k 0, c* V# D+ _' U( `" ?. `' o+ A& r
let new1 06 F# `; \  o' M* Z5 I
while [k < people]
& A3 I# U/ }2 T( F3 _# g/ c[( w' B, h+ b. [0 m/ P
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)8 I3 \# Z0 r: J
set k (k + 1)
% K! o5 ]2 Y: Y0 A]
4 M( g( M- J; \+ X$ Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" v- E$ n: i( F! N  c' wset global-reputation-list (replace-item j global-reputation-list new)
8 s; V4 X" j. p! v( h+ Aset j (j + 1)5 Q$ d, W  w4 x% i) e, L2 z
]) S/ |* H( w. w
end1 h' x  S( D* w& g+ y3 ~
, v/ o" }5 P% i: x+ H$ o
8 t5 O8 r4 a( L3 d
+ P% u, {/ y( X6 `; `
to get-color
; w: @8 u0 p# F, P, E, E% F2 q1 E
( A, i$ z2 W' Q( E' `: r! R" cset color blue

+ R9 a; ?% N9 s) Hend8 R- M2 t' u+ D8 ^' `
0 K. |. W" ?5 D% |. _4 d$ r# P
to poll-class5 Q* G) f- T  r# {8 J# S+ b
end& X; Q2 ?: ~1 ~$ T7 f3 |
% p9 q! V" ]: k# c7 v# V
to setup-plot1
# `  Q3 Q0 |4 l" h# c
/ n5 {% w& q/ C0 K5 qset-current-plot "Trends-of-Local-reputation"

: _' L8 n! R! n2 \% s
+ A, W8 I, X% ^. b) O# G' e! @set-plot-x-range 0 xmax

- k1 O$ J- B3 a$ A3 e
; q% d% `7 x4 h! x, @( y7 q! yset-plot-y-range 0.0 ymax

$ t% j3 w- Q3 H) ?- B% }# Uend
# \: n1 Y6 `- P, F
7 g+ s8 y/ `7 M  D8 {to setup-plot2
; R. [7 b" _+ }. M6 ]* w6 u  A6 C& @
set-current-plot "Trends-of-global-reputation"

$ D! \% i/ P, K3 s( F
+ W! ^: ?- k/ v6 eset-plot-x-range 0 xmax

$ E( T% `: x3 n
* O$ d" k& S5 Z9 O7 I5 ^set-plot-y-range 0.0 ymax
7 u& h* v6 w# s/ {, W" T
end
! v% x; y8 z+ F# F0 y- L2 L, o
% w+ j/ d3 z, j7 v* w. G. s0 [8 Jto setup-plot30 n+ Q/ J: Z# H7 ^

& M+ S2 h, h. g/ D$ e1 K6 z. tset-current-plot "Trends-of-credibility"

8 H9 p6 w' h7 @6 A, s) F' K1 k+ `( }* C& H- G" `
set-plot-x-range 0 xmax

( y5 l, m" J# z. ^3 e
2 T  T) E& g* W+ M/ Xset-plot-y-range 0.0 ymax
( l" J" u2 f4 @$ s3 K
end
/ b4 ^  ?* \3 ?, Z  O/ V( ?. ^# O+ W, C, X  }1 s  T& M
to do-plots" s+ H5 G) n3 L1 l# s& l9 k
set-current-plot "Trends-of-Local-reputation"
- ^5 @& Q4 `# S) {set-current-plot-pen "Honest service"
; s  \; u  R3 s; @7 R; hend* r- l  i& ~- Z! p
* A4 U. _6 E9 X# x/ ]7 `5 N2 L  o
[ 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.  h& s, I& [: Z3 J5 n
) y: Y$ Y* H6 u, Y6 p" C* J
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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