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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:' D3 h$ Y6 }/ A9 m% S/ b; }( K
to do-business
" ^+ C+ G* \& [9 g rt random 360" z; ]6 A2 O6 k' a2 k5 r
fd 1
+ D/ V- n+ x8 c, l7 f ifelse(other turtles-here != nobody)[* q6 c3 B8 U2 R/ G
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.# U9 Y. T& u" ]5 k' E3 _- u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 K8 I) K! d7 I2 Z- v8 A
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
' S+ ^/ F. x5 t  a9 |   set [trade-record-one-len] of self length [trade-record-one] of self  n  d  m+ [* Z( ]# N; n, w
   set trade-record-current( list (timer) (random money-upper-limit))
' K+ z! O+ V2 q1 {/ _6 w( i, R! U! J$ i5 y% `. v! j* I: V
问题的提示如下:1 F5 A# o' h' H- S

6 ?. N1 T% U, o5 I* R+ Verror while turtle 50 running OF in procedure DO-BUSINESS
' f! b6 b$ p( P5 y; p  called by procedure GO
0 j4 j% G; A+ R( |. F3 a7 rOF expected input to be a turtle agentset or turtle but got NOBODY instead.8 ]5 ], w: G. f$ r9 F
(halted running of go): E0 f& T; _: E0 \% K5 m

* b% `) p2 x/ b- T9 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~~  e5 D4 m' i- C/ \6 }- ^! R
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  f" e! B$ f8 i+ }2 d. n0 W1 D3 c
globals[  c5 k% X# a: @1 ]
xmax9 ?6 x+ ]. ?4 H
ymax
. N" _' b/ K, t' L. gglobal-reputation-list, p5 q) X/ t0 s4 |3 {' f# l
8 s- H7 t( C/ ~" _- b1 @3 q4 U
;;
每一个turtle的全局声誉都存在此LIST7 P7 ^4 `# ^9 ?9 Q4 \
credibility-list6 V/ ^9 @4 D% E$ j/ r" Z
;;
每一个turtle的评价可信度" k8 c  C2 {; B7 g
honest-service& w: \& J- z+ V, E
unhonest-service& [# g! S5 E) d1 _/ ~. X5 k; }
oscillation
) A, W$ }! V" Arand-dynamic! C9 H2 \4 I2 e% D; O$ u: w
]
% U/ M8 _+ }, }4 Z, Y0 o, t9 ~- t( I8 b( r) O* J
turtles-own[
- A1 V# D6 i$ Z0 K) j- |2 [/ ltrade-record-all5 k8 O0 c0 k- T* {$ k3 _. c7 Z
;;a list of lists,
trade-record-one组成% @, c" ~4 D  m, P7 y/ Y
trade-record-one
8 F. w1 z3 N, H# y  B9 @. X% a$ P;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. u4 Z& Z, s7 l" Z$ N' F
) Q1 k$ b( {; ]: V$ E2 d- J9 W
;;[
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]]
& K# Y: ?0 L6 N1 {8 ^. 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]3 g9 M+ W" D$ e0 D
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
& X) W0 |& K) o6 Q9 `, k' Dneighbor-total
- n/ f8 b" ?9 B6 f" z0 e7 x;;
记录该turtle的邻居节点的数目
- }9 c2 S  }! Q( a: R( f- ctrade-time# t8 P4 [" Z% j; h) t  d
;;
当前发生交易的turtle的交易时间
6 `; t) J$ n" \, S/ t; wappraise-give
; x/ ~1 @3 F3 J; O9 I7 X;;
当前发生交易时给出的评价
- g6 }. F7 H0 L- c( [appraise-receive
% U& R% V1 R% b+ Y;;
当前发生交易时收到的评价1 j/ o5 Y) I3 m9 C. U3 b3 a" x
appraise-time$ j0 B0 p8 Q- Z: K" z
;;
当前发生交易时的评价时间
! E4 B1 p: S' z# t  U$ tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉- }% T) T3 c/ S$ }3 ~9 F
trade-times-total
1 O, D- H; Q* p. ]# ?6 j* x1 _;;
与当前turtle的交易总次数- A" c0 m; o6 \% {3 h
trade-money-total
0 I, ]: V8 @5 ^, g;;
与当前turtle的交易总金额, M0 R' Q6 T+ l% {1 a/ o
local-reputation$ t9 e8 j* D$ F% P
global-reputation
( t8 _6 s. a+ B& |/ |credibility' j' W% U: i$ w: a
;;
评价可信度,每次交易后都需要更新
" ?1 O4 b( i% d: J! T: I/ Z7 Ycredibility-all
$ [3 L- e- }. Y, Z1 l" J8 W: n;;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
% \, \- Z9 U( v. m, E# t- X" I0 Q2 @
;;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
: R. r# X6 X8 ccredibility-one
8 [/ B, a4 a, \* }2 R, M* j8 p;;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people1 ?# ]# ~  a0 ~
global-proportion" H; r; h( b* Y9 A- Y9 m
customer
( M0 E* e. G! ecustomer-no
  T, J% R( J& B/ ^trust-ok
" g+ Y. f! d1 @- K6 Ztrade-record-one-len;;trade-record-one的长度
, S8 B8 M+ \- L7 k: c2 Q! ?; ]]
, h- Z; \  l+ R# e( T) }  X0 D! ^- t  H5 \9 ~
;;setup procedure
3 o9 z. k4 X* Q  b
! b# F2 ?! A' S0 L: Kto setup! [4 ]* n+ i( a% Z4 a
/ k( |+ u- O5 d' [4 t; S
ca

2 y3 {  x- s; c% p" |6 b" D, r) y9 j0 h4 x- F/ L
initialize-settings
! r7 M/ b4 ?" d! T; U) ^

& q: m  Y9 y3 Z3 v- @crt people [setup-turtles]

2 p  p' |, S! b2 A. i2 P
: e0 ~! B: V" |& @6 zreset-timer

$ U" m3 G2 U  f4 o1 I0 P
# ?7 F* p2 {! }; Wpoll-class

: ^. S5 N8 w' @/ Z- o; t. R. g, Q) i# z8 |* E% l# W
setup-plots
, V5 O; k3 M$ X3 x* i" L

  ?3 B, K- ]8 @- Pdo-plots

  E+ ~  F2 G) }" \end
$ S/ W1 j6 T' y2 z. \: @5 u% f. ~  U. }, y+ O! I( _( J7 I! u
to initialize-settings
& i1 e/ c/ _  W0 e* e$ b3 D( c; i) K, I6 `
set global-reputation-list []
4 O6 I3 ~: M! W+ ]7 S
0 o4 J* U* N% Z) q( B3 P
set credibility-list n-values people [0.5]

% I4 G8 s5 H( |1 X, M- `% g; c9 Q0 L! P. J, x/ E$ p
set honest-service 0
6 q2 F: P8 Q$ A% f- g+ r

! ^9 {) e, @5 J% J$ [. Pset unhonest-service 0
- T; Y( V' M) l3 W' }( a& l

" T2 |2 W: j" ]" xset oscillation 0
+ s) z4 R: |- }
9 J9 r; X% }* y: f2 d6 P
set rand-dynamic 0

* B9 C$ t# [% G  Q/ v/ A! U) Eend: D# ^0 V9 ^. N* Z( [4 n

3 q; J3 K$ G( ^0 Mto setup-turtles 2 n. N. |5 `# ^. C: `; [8 ]
set shape "person"
- S, k( A2 w6 ~* o4 Q3 \/ Msetxy random-xcor random-ycor
( y  g* f: }; i( yset trade-record-one []6 q# @3 y6 m' e/ }

# H3 H! J3 f1 ]0 A) \; Mset trade-record-all n-values people [(list (? + 1) 0 0)]
: l( @1 P) y( L  y

9 v7 L# b3 y$ c% h! eset trade-record-current []9 q4 N3 F3 ]8 m* L+ h8 T6 R( ~7 M" \
set credibility-receive []2 T8 F) b8 p2 [
set local-reputation 0.54 x4 z' j. _0 h2 z1 H! }) `3 \
set neighbor-total 0% h4 P* ?- z# I% K
set trade-times-total 06 V! ?( X3 W9 Y& [1 y  y
set trade-money-total 0! F/ t0 u# l1 Y" ~" ^- a& I
set customer nobody
5 H4 R$ u9 _; I  M) L+ dset credibility-all n-values people [creat-credibility]
# @' c. t% {8 Y1 P6 Eset credibility n-values people [-1]6 g+ v( j$ Q4 M+ T
get-color
5 b" u, t  t: B) B
5 E! y9 }/ H  r; ~4 c
end
/ S# p6 F' h* B) v# ^' [
9 r: K; ?, M. K& o0 C. vto-report creat-credibility
+ x. q9 |. D* U, Z- l0 H7 kreport n-values people [0.5]- D! P  M4 a0 o5 [0 Q/ x
end
, k- t$ _2 @$ l& u0 c/ ~+ S$ ?& x. L  ]* P# Y
to setup-plots
9 N8 G% V4 d8 |3 G5 D/ D/ P
9 f' E; M1 |: x4 p2 K4 jset xmax 30

% A0 V2 R! Z9 a! j" [% _. ?' r; Q8 Y/ `9 [" j5 Q$ H: R3 f/ w$ v
set ymax 1.0
( h6 X; ^& F* n) ^

; @, M" b1 a) tclear-all-plots

' B% B! E% C2 b' `; V7 P7 n% L: W  c/ B$ P, L/ A" X
setup-plot1
5 Y' Q/ J) b0 X7 ~7 e% [7 w, E
- X% T3 T; x3 b* J. f+ d) ^
setup-plot2

- v( {: j& Q/ J9 _
5 P2 f: Q9 `! J/ W; d1 i' _setup-plot3
! T0 w# z, D& y# L- _/ B! W" X& E# O0 O
end
1 I- }/ L$ e# h, B& E; y! C8 @5 W; v6 E
;;run time procedures
5 i7 {- S1 L5 V0 a" {! B: M, Y( ?; E, F/ _& X2 I+ O+ S  S" U$ ^3 c
to go+ h9 E2 y- J$ w) S
5 @* G) s! ^1 O  @
ask turtles [do-business]
- s& x8 _8 d. a, P6 L
end* j; g  q4 c8 ]8 M8 _8 _
' m0 M) |! _: R# d7 Z8 J
to do-business
& b5 l) [& i9 q' R- T  p
0 u# f4 D. F& L3 J' q, n, Y- w$ l

  m2 Y. s: ^9 v* S; Ort random 360
4 L# T% A, e6 \2 y. ]$ T' U
& t9 g# O$ k* x6 q5 A* K
fd 1
7 d. }+ E. w: o' k  G
0 Z# H7 K8 m' m  B
ifelse(other turtles-here != nobody)[

! z1 \/ ?8 M/ N
$ U& }; ~. L4 c" N% v& uset customer one-of other turtles-here

* Z) t  b8 m( v$ R. T8 s6 k3 {0 `, X, r+ H2 e" |2 z
;; set [customer] of customer myself

" N, H9 S' j6 y3 L+ t; E1 j
1 [/ E: C0 q+ P: _- xset [trade-record-one] of self item (([who] of customer) - 1)
) B# C, c+ r/ ~% u( X$ y5 V" y1 {" c[trade-record-all]of self
  c9 L* |+ g3 G( ]# O& h3 y;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 I% f! U& |0 F
; w8 |" o6 f+ y4 V
set [trade-record-one] of customer item (([who] of self) - 1)0 |1 H% s, k2 l1 n4 P
[trade-record-all]of customer
8 P1 \- U6 z1 \
) c9 l7 i* ~# w; D2 i
set [trade-record-one-len] of self length [trade-record-one] of self

& T5 F0 T) M7 G4 o
% t( v! t% ~3 g+ {  xset trade-record-current( list (timer) (random money-upper-limit))
6 Z+ }& V7 J8 E! z6 `" O

" C; J/ ]+ o" U. D( m2 kask self [do-trust]! S* M! m- q7 H8 h) s, B9 n
;;
先求ij的信任度6 S0 |+ y  B4 v8 D! d& A( C2 i

1 h2 G- B5 u# E4 I7 tif ([trust-ok] of self)
; l: z. v$ \) a7 `;;
根据ij的信任度来决定是否与j进行交易[- `: Y/ Q/ `, S# y5 E3 i6 i) `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 ~  G3 z2 Y: S4 F+ E, I6 s5 A  ^+ b) Z
[
1 G. B: M( m3 l

+ J4 M, [) p" j4 u2 pdo-trade
) I9 U, w+ }6 ?( x3 \
1 R$ C1 w" W# V+ p' {
update-credibility-ijl
6 ]3 e/ C, n; K1 M6 Z& V
% ~" ?5 x, r0 X! s. D
update-credibility-list
' N9 q1 t* M) q! L% F2 r

" X3 }% C2 _3 G% `( I) y; C  ]  U9 G+ k# t/ b$ ?5 l8 O
update-global-reputation-list
7 @8 ]' f' V- ?% w

, f  o* @3 ^6 h3 Hpoll-class

8 h8 P" I; Z( \- ?- _
6 l. l5 @: \8 B- k+ d2 ^get-color

/ T# V( f1 s4 K7 A9 S, {. E* v; m/ }- N2 j. d5 ], e) V' y+ i
]]' s4 R2 F* r0 Q( I! L8 i6 l

$ }2 d% @" j* C1 |! H;;
如果所得的信任度满足条件,则进行交易; I- w& K% V& M4 P) I
5 S$ }: n: ~3 h
[
  I) H# S7 I1 j( N3 K
6 G% z4 B0 J: \) J, S
rt random 360
2 [/ \/ S4 I, }& {' n! m
5 Z/ ]6 r/ `! {/ c3 l9 y5 i5 G
fd 1
4 n: i3 {6 D; _: }! R0 d) ?

! D$ ^. o4 e( E4 r, Z' t]

. [- v, T9 a/ b: n3 P$ g
+ L$ p4 t. L; Send
. j( ^: w6 B2 X

9 s5 g! _& @/ Ito do-trust ( Y1 u' A. o& l5 b0 C; n" h
set trust-ok False
/ c/ Z( H/ M$ L& o6 b* q. B+ f2 F9 h0 e+ Z# v" G( N0 V

9 ]  \  `/ N. W% d, b8 t9 _let max-trade-times 06 ~+ h& _) h; o+ ~+ F6 q5 x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], l: Y* v( {% t. m; h
let max-trade-money 0
; s  L6 v+ ]- r0 D( t) Hforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 H7 H  z; g6 a) jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& `2 D& R7 [2 h8 ?3 [) m6 f( P4 e2 o: k

0 y: k/ `) Q& Q) e( ^- b- Fget-global-proportion5 V1 O/ k1 T. ]9 ]- F
let trust-value
! t2 u* r9 ]6 x& f/ `# @9 Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! M9 o3 P4 e' [: F" `  g
if(trust-value > trade-trust-value)
1 s; x- f$ U5 o# J! n[set trust-ok true]
1 p+ Y2 e# V3 B: Xend
1 L- B: _# N: h& M
% x* d9 l0 J7 R3 \) Ito get-global-proportion2 l) W) ^# T$ f/ R% q1 f9 V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% Z6 s: f9 H4 g- U/ O) c3 D
[set global-proportion 0]& \6 L) |1 |1 o% E
[let i 0
4 G0 ?+ H0 M% L/ {# w3 flet sum-money 0' ]+ T! V8 H* m: d
while[ i < people]8 R5 H1 n. q& R5 n
[. ^; P8 T9 y( r( D8 V0 |
if( length (item i
: p' a) }! r+ V3 S4 a9 M* W2 h[trade-record-all] of customer) > 3 )

  [: s) U. U% P7 S" M) i[! d- m9 b% e7 G2 ~' m. Q( L# P$ O; X4 z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: n  m1 ?* ^9 q8 t9 G]* b, V" m2 v1 D! m( ~# d
]$ O+ f3 [- w/ y7 P9 a. C1 V$ G
let j 03 R8 L7 l: y5 y$ ?# Y6 m5 B
let note 0
% `, k0 j& D/ j) x/ y! mwhile[ j < people], n1 N& g* \  p; C) G3 }
[: q6 Z! ?* ~" h: l# x$ N1 ~1 Y
if( length (item i# N2 ]! R& J3 E  L+ _
[trade-record-all] of customer) > 3 )

' E$ k! y8 V' i[0 c  U0 V+ o, l# d% B) M  g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 j1 e  ^6 n7 Q5 Q' i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ {: D- V4 r& k& {9 j& Y" c. ?$ m[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]8 z3 k) r6 D" J/ r
]
3 \7 |* l1 r6 b: L2 _& z9 t" c]
# m" S% n8 x: N. mset global-proportion note
. W1 G& o7 i. U; f% C5 L) u1 q]* O, k0 [' m, f. s6 d
end
+ V5 k  s, y: u4 S& W2 K3 j, ~3 o. I0 T, O
to do-trade# b1 u/ O! m7 |  C+ D8 e) J; X
;;
这个过程实际上是给双方作出评价的过程( W. R0 z) a1 E# u3 i4 j+ [* h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, p% P! l$ {7 ?& x: I- `  V# P* v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) |0 x. A" y  |  _, t  w" l+ o1 t  s
set trade-record-current lput(timer) trade-record-current
& H! V8 X/ ?5 o8 x$ [8 q;;
评价时间
/ q6 z" n5 q" @ask myself [( ?' u& c9 t, n9 m8 T/ [$ }% K
update-local-reputation# S' p* W# x/ D- E8 [7 i  A' ^
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 |# u7 m6 w* n7 n  b]
2 m7 a  }6 g& `3 U; R1 aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ U7 B! w' j( L" U
;;
将此次交易的记录加入到trade-record-one
  K+ V% e/ g0 ~0 @8 nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 Z! H0 Q1 }) ~5 B- nlet note (item 2 trade-record-current )7 |" e$ A5 l+ P2 j' `3 i
set trade-record-current: |! z8 k# m0 t1 d
(replace-item 2 trade-record-current (item 3 trade-record-current))
; {; `  K* a# O$ b7 g7 K+ `
set trade-record-current
2 L8 G5 ~- g: G) q/ [, I5 P(replace-item 3 trade-record-current note)6 T3 r, N9 @( I
7 k! W, ]( n4 l

2 y9 d+ c7 k) }ask customer [
; A4 o" Y& ]& U) U$ D! Z" `update-local-reputation
/ p$ e/ P" U/ W; jset trade-record-current! p* H# \: T5 N7 I
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 J3 t" ~# z3 x1 t
]
, H; ^7 }/ a; K: Y4 k0 ~( m" @4 I$ y' a* f/ t
/ ]7 L' j+ Y; V* `( `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. i# b0 P1 J$ X4 R( J
  A( v. u$ J' p% {1 B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); }8 d$ ^; f' w# A
;;
将此次交易的记录加入到customertrade-record-all
5 a* j9 G% f( e3 _' ?  Y' X* i/ }end$ N) @& ?) x) T4 M' z

! o0 N3 J# E! G$ Hto update-local-reputation
5 m: j9 F; k! ?set [trade-record-one-len] of myself length [trade-record-one] of myself9 L, y9 x) f# E9 j1 G6 j# ~! j

6 ~5 v$ c  f& F$ D. U& u2 I( ~0 e4 S
;;if [trade-record-one-len] of myself > 3

, D% B) T/ K( u) Xupdate-neighbor-total
  O( n4 Y4 D6 _& S6 d7 J;;
更新邻居节点的数目,在此进行0 v2 l8 Z0 z# \7 K6 I1 d5 B
let i 35 B5 W, p* T( r
let sum-time 04 m) @, S3 |) Y6 c
while[i < [trade-record-one-len] of myself]; [$ }& \) h& `% b
[
* V. ^9 O7 k2 `, G9 s9 Cset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )+ m2 j5 [9 h! P' S; r. I* k
set i9 p! e, ^3 U1 R: j+ c$ x, o
( i + 1)

1 d( V$ ~0 \5 c: J5 a]
$ @4 G- f0 f* `let j 3
1 n& ?' P" G1 ?. J4 `% l! V% {let sum-money 0
5 c; x( y2 \5 ^9 @7 @. M$ w' X/ ?) Bwhile[j < [trade-record-one-len] of myself]
8 I! `  K/ d. k2 l[6 _8 s5 s7 ^% K" i
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)9 u8 V0 w( A0 R! y- u7 w+ r: o8 ?% y' F
set j9 `, Y. m' L  w4 G3 c
( j + 1)
9 V% v4 N) Q4 @. |. i4 p
]
* ?) G5 d6 }. r9 m' y2 plet k 3
8 h' u( Z* Q) s' p5 f+ klet power 0
9 s- m0 P, V  s0 H8 ]! s9 O4 }" tlet local 0
3 f9 H2 T: r, r. nwhile [k <[trade-record-one-len] of myself]0 j# B1 P9 L7 j
[
0 h0 M( y, S. ~7 H9 gset 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)
0 [5 L3 P# X; V/ V& }set k (k + 1)+ s0 @  T4 m5 |
]
8 w/ L) _8 R% E) cset [local-reputation] of myself (local)
+ g4 _% p9 w7 G* Z) n6 ], V" E; wend
! Z' {$ X  Q2 B, ^- t2 F, j8 D2 y/ P7 x+ W1 Q( y9 _
to update-neighbor-total
+ C- D5 l* y; r9 Z) A1 D0 D6 S, S, U. m7 u* B1 ?" d# J
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  X2 ?* X, k; v8 Z2 H( g1 s7 W5 ]1 n; g% x2 U5 k1 k' n1 n; E
" u+ H/ D5 S/ d( n; _, X3 E
end3 e, T7 U( U5 G5 Z5 Q  V

. F! b; Z% }9 `" N1 A2 Hto update-credibility-ijl ' |! j2 I% ^! Q- v. ~' a7 |0 m0 G
' f6 Z/ c  N# j0 }9 I. A( Z
;;
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 R6 }& d! r5 k! j6 u$ \& P; u* f
let l 0
3 d( J% O" u3 [! D. zwhile[ l < people ]( U& ^: n- R& o" b& l- 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9 a: r. T! U, E1 W5 g/ q
[
: o' {1 b% I+ elet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% |! R; n& d3 q: T( J6 O; R
if (trade-record-one-j-l-len > 3)' o( @. L( X8 ?, J1 g# s4 _1 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
" B' X% N* d/ L* Clet i 3
9 n1 e+ h4 i6 R$ @2 X, Alet sum-time 0
! ^7 S; t8 _* W+ ^while[i < trade-record-one-len]* z, H+ P( `/ \$ e( G2 w7 K
[6 }2 `0 U0 S" W- z7 K
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 \4 C, u: Z0 m3 F
set i
5 _7 H, y1 a- I$ y( Z. X0 X( i + 1)

$ q% W' B5 i8 F  ]# N1 o( I9 X]9 x6 b; z" b' p# S
let credibility-i-j-l 0  N0 s1 ?: c0 t4 ]
;;i
评价(jjl的评价): g2 k# S7 I# m) n" F
let j 3
0 n+ X/ g7 a, B( e, D# t: X: rlet k 4
4 f. L: }9 I) L+ gwhile[j < trade-record-one-len]
. o4 F; N$ J# j[0 Z, b: g" P8 b, v- U( D" O
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
0 K8 H$ s* N6 p. b7 mset 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)
- z: v, N( ?$ q% x$ gset j0 T0 k$ h4 @7 r4 ^" y2 s
( j + 1)
6 v! u" y) o, g# C
]/ [( I& d" }% a0 j4 x# `$ s: O
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 ))9 |4 Q8 R1 x( B0 o8 v
1 q, R( T: R% S" I
; h& f8 x7 f) O' ~
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))5 P6 E4 v2 B7 B, a- V
;;
及时更新il的评价质量的评价
+ l9 U% w6 Y9 _" j$ Yset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& F: @1 p- m8 U4 L0 ^" d
set l (l + 1)
$ o" x, ^6 N5 H0 u- ^]
: u+ }4 t) J1 k1 _- t# Y6 Hend# ]6 `% h. {' G; c

& J- C% U9 Z! z- Z( U. dto update-credibility-list
* p$ J* p: ^: E  h$ Y" Glet i 0
' s  p( s5 W9 U- H2 M5 e, h( k& I; _while[i < people]
2 U# K* b2 T: `. x/ M8 {% d8 M[- n9 w, E0 j) Y
let j 0( ^5 C/ b# i0 n$ m' y" T! h% |4 w
let note 0
( r; C8 b5 w, y3 l# slet k 0
( [$ x5 u. `# Q# S1 d;;
计作出过评价的邻居节点的数目
) R& X% T- Y  G2 e- qwhile[j < people]% y. s6 F7 Q' |& W  @
[: ]7 U3 n* F$ D) O9 i/ h9 O
if (item j( [credibility] of turtle (i + 1)) != -1)
' y2 Q6 s  J5 T;;
判断是否给本turtle的评价质量做出过评价的节点! I3 Z$ S: l: c4 n; a6 I" T
[set note (note + item j ([credibility]of turtle (i + 1)))4 Q0 o% s+ D7 r' w
;;*(exp (-(people - 2)))/(people - 2))]

  Y5 v6 D) v# P, x. E* Kset k (k + 1)
  ?4 D& l6 [9 n' V( D2 \) t0 E7 m]3 `8 W; {* }0 [4 @, t5 ^
set j (j + 1)4 G  ]7 R& U% {& N
]1 W7 L1 `0 b6 R; [( Q2 t5 I
set note (note *(exp (- (1 / k)))/ k)
2 [8 G' v) Y/ jset credibility-list (replace-item i credibility-list note)+ \9 f. H5 M3 ?# R' t& K0 \; N8 p4 p3 n
set i (i + 1)8 |2 W1 b4 L3 Y; I% |
]  e7 X+ |  y2 _+ W4 Y/ a+ V
end, @# P2 q$ W- t( a( u
  G2 _' W: G7 {7 }# m7 d# e$ W8 y! c
to update-global-reputation-list
& `5 I% G9 l$ O( L* p7 E) j! Z6 Elet j 0
  R  @4 {" X+ J: y: t, r  a' l$ J( |while[j < people]+ H2 q2 U9 U, L1 C
[; w4 k/ l+ U. u* a
let new 00 K6 }' v; _& Z, U: n
;;
暂存新的一个全局声誉
) y& l' c& f) K2 l2 d1 ylet i 0
" `( z! Q5 t1 M: p6 ?let sum-money 0  ]: E# M, R, U; `. q4 f. E; B
let credibility-money 0. N* j' m! C. i/ c* H
while [i < people]
+ s  @9 G8 @9 `0 Q* U[7 s6 u1 Q% D# U3 |5 \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  F' P4 }- p# O$ l7 u/ i
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! g0 N4 V% t" O7 W, Q
set i (i + 1)
, e; V' K2 I% a$ |; M# f# {  G' f]5 F( ?3 V) @8 z1 i
let k 0
) ^# U) v# l# jlet new1 01 V' N: z8 N) w2 M3 q2 N
while [k < people]
2 E# Y# X/ U6 A[
( K. {0 f! u2 Yset 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 a0 ?# V- o2 r* C4 B
set k (k + 1)5 h! |& `1 j/ z/ a* U2 ~- k
]
* X" E# y. V6 r$ i3 Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   G& P- n3 I' c* v! a' s- @: S  \* e
set global-reputation-list (replace-item j global-reputation-list new)
0 M+ k) R' G  rset j (j + 1)
6 I/ T- R& `7 x  X. C* z+ A]: P$ A. O; A; z, Y" c' ?' O, H
end
  `9 u+ r! X/ S4 C; [" I8 j/ k% ?2 Z: u. t, N, G
# J5 Z" d* F3 D, A$ q
1 V! }6 p5 d1 N) @
to get-color
2 V* S- H# i) N3 k' O# A5 A, K# a/ N
1 l' f; n- d* d- l8 E( f- nset color blue
$ S9 d6 D$ y. r$ @6 Y0 b
end% d# ?$ @  W! w5 I" H

  o* R" ]" f0 dto poll-class
& k# g& `: F3 ~9 r, Q) Rend
1 F. B5 u( @, Y* s8 ]9 Y
3 m6 `* j/ a# k  ?to setup-plot1
8 k' a5 W# d8 m' W: r# u/ X/ H, E* Z" \+ y* a/ }) \
set-current-plot "Trends-of-Local-reputation"

% h5 \* a: z$ i- S8 s) R3 i- K$ I. O+ @. N" J- o$ l- Q) m5 H- B
set-plot-x-range 0 xmax

3 s  X/ m- [) N7 D4 x2 O
; Z, P% h% N4 r( Nset-plot-y-range 0.0 ymax

6 Y8 X) i. K% Y4 {end! [+ {" s0 A& E. z' j( W5 }5 S6 w

( E  D8 L+ D$ p2 v, @( X! Kto setup-plot28 Y- C+ I# [- a. _, T9 o

- s4 z8 M2 o; i7 n* A# Pset-current-plot "Trends-of-global-reputation"
4 e5 M9 @: n: U: x; h" y. V* i
9 e* L% h% K$ N4 @& X( c; h
set-plot-x-range 0 xmax

, S- M1 H- T+ X1 M6 m: t/ k. @# o$ K* [' X) }
set-plot-y-range 0.0 ymax
3 l! }; R" w% u& v: ~& H
end
' t. t* Q4 o/ q! d$ ^3 _0 v9 \+ O9 X& i( z  u; ^+ @: x& c
to setup-plot3* i7 |, R: u$ {, c

, l, w$ ~( _8 N$ G- K! h+ `; @/ Kset-current-plot "Trends-of-credibility"

4 `4 d8 Y3 @# a" i2 A  A1 w  O+ W3 }! C5 B5 K4 _/ u
set-plot-x-range 0 xmax

5 Y: _" C2 L. k2 o
! u% o: J/ M8 [" _2 R8 Tset-plot-y-range 0.0 ymax

4 \! L6 {/ g/ ^end
0 @0 @; A( Q3 m! n
( e! P+ Y  d. ]9 e* pto do-plots& d3 n$ Z& t& \% i- D) R
set-current-plot "Trends-of-Local-reputation"; ~! ^' _' ^1 S3 w& k5 {7 R+ V
set-current-plot-pen "Honest service"9 p6 K' Q, X- l' I
end
& C' `0 h, v  M/ G/ q& a" P7 t
8 r) _9 G9 t" z7 h5 t- Z[ 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 b, {: b; _5 y: S* C1 m( D' c

2 @) r. s5 ?; T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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