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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:- O. k+ d& O5 i  z
to do-business
, \# m3 ]2 ]. F- ~' u rt random 360+ A$ J/ C: E; X* J3 F# l- ^
fd 1) ~( D: D* w7 k5 ~! ]
ifelse(other turtles-here != nobody)[
& s6 x4 r* z( r- a! _* X   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.) |( s) v# I. Z" X& O! J
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  |* u* \3 t/ Q& @0 w- `/ M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' g8 Z5 x0 M+ _5 d
   set [trade-record-one-len] of self length [trade-record-one] of self
/ C; k' K$ h8 c2 @1 J& U/ H7 n   set trade-record-current( list (timer) (random money-upper-limit))- k6 x2 U: c' G8 d. d. H

  p6 y3 r: Y# v0 F; J3 |3 w问题的提示如下:2 ^3 k0 I9 y- O1 n' ^

3 y% K3 [4 @4 J6 @1 Kerror while turtle 50 running OF in procedure DO-BUSINESS2 M: Q  z2 K) R- D
  called by procedure GO( n$ A+ X0 [1 e& s, w* D: d
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 m% O# h6 M1 u* ]: a2 g
(halted running of go)3 b4 b1 [5 q6 j' I
7 @' w, Y" o5 _: C" b6 e0 ?' ?# w
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~~* j. E4 r7 `) {
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
* R  {* q" ?, q: B+ V2 _- Oglobals[
7 S/ C3 \) L6 s' r$ b$ }" b: zxmax
) O' z& X' f2 F5 P4 r) w3 t2 Oymax1 }7 a' b/ C/ I
global-reputation-list4 A4 U9 v5 y" C# t" Y
& j8 |& N* v; Y
;;
每一个turtle的全局声誉都存在此LIST. F5 k: \4 _  G- w  i8 F  v' S
credibility-list
$ y! E  L- }& B( v;;
每一个turtle的评价可信度$ s% G* P; a: j4 r& f/ T: V, G( [1 I  J
honest-service
, G2 W' X# \& K& f5 [- a9 v: Qunhonest-service
1 \0 O+ K# `1 I8 a( r5 uoscillation" O- w7 w3 |; s8 _8 _  q
rand-dynamic
5 p0 E6 b+ C7 j* Q/ _]1 \' D6 m( g1 h( ?, N

# E% T* ?" O# ]* Nturtles-own[& I" t) o+ B2 y
trade-record-all/ n3 d& b( H( q. @4 v9 J
;;a list of lists,
trade-record-one组成
# J8 ~* i: A) @trade-record-one+ }; H* W' [. r6 q) }$ J0 X
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) r' w. l: u+ O: x  Q* g& I
, n( l9 M+ B4 @# K9 e+ ?9 q3 ?
;;[
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+ |$ k+ u: V; R1 A. k: Btrade-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 K& Q  |2 e; {/ C5 r! C% 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
3 t- `0 j; N+ n8 v  M' y  w$ dneighbor-total! `3 n9 C. v; V6 L. A5 c
;;
记录该turtle的邻居节点的数目
( _9 _+ H( p# r) S2 ]trade-time
7 i0 v% r& {" i3 J& Z6 k5 O;;
当前发生交易的turtle的交易时间! ]# I! X$ _/ N( L5 j# V
appraise-give
) O9 p3 Z6 h" r  [4 p! X4 E' w4 P;;
当前发生交易时给出的评价
4 D# U/ u4 b5 P. j7 H% Q2 eappraise-receive
$ R/ d8 w6 H9 E; X9 T, e) ^;;
当前发生交易时收到的评价# S" h3 J+ Q  T! {+ W' j
appraise-time
, m+ f& D  e  y& I$ }8 `;;
当前发生交易时的评价时间
+ F' A. Y& W" w, i8 @  U3 Vlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( i7 o) |( B9 _  jtrade-times-total
- v0 e+ W' |4 B) z: M7 o& q;;
与当前turtle的交易总次数3 {3 e$ b& R0 x$ }& W8 K( C
trade-money-total
1 x4 H( s( v! K+ J* I" ~7 M4 L;;
与当前turtle的交易总金额
+ y/ ~! T( Z! xlocal-reputation
( s7 O9 E; a" F! p6 wglobal-reputation
3 J' c0 N, O2 Rcredibility" c* @- I  {: U
;;
评价可信度,每次交易后都需要更新
" P* e7 d7 E/ K. Gcredibility-all8 M9 I' S9 F' A! m+ W4 u
;;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
. G8 Y, l/ R. Z7 Y- F1 R. x- t
8 g! Y3 j! [5 l2 H2 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) W  N2 [' E4 d
credibility-one
& {$ w7 R" Q; d. e$ h$ g;;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. x9 `  D8 v; w; [( u" D
global-proportion
0 W! Z. [, R; z# Bcustomer  e* p; t' u! D1 n
customer-no
& z8 P; U- a3 m* E' `trust-ok! w, f4 b3 p. p* y1 a, A
trade-record-one-len;;trade-record-one的长度7 j; ]# F7 l+ `  C0 h
]
) h7 y2 L5 n) A  L& s2 v
6 U3 N- C+ W) {! z. s& m;;setup procedure
' U+ ]9 x. j2 ~6 I
5 D, e' T$ `5 K. Oto setup7 _( _+ k. _% h$ \& R$ C: z
$ N! Z; Y& _" e( ^5 x) g9 O
ca
" M1 t" Y( Z5 u  u
$ r; }$ e- T1 _) @1 y$ H+ o- R
initialize-settings
- k6 ~+ x& V2 I1 O- S) t' ]& t
1 V1 c8 s7 O( ~4 E) _
crt people [setup-turtles]

5 I* x7 F' O; k3 V( n( ]8 e. E4 o
; q/ W1 Y8 B  Z- A6 c8 U7 Ereset-timer
  l* |3 b5 ?9 j% @. y) l# a0 ?

% f6 u4 e) i; U) @0 L3 ~" cpoll-class
2 T: p; \; F7 v; |8 |3 z

- g! ~  u( N; Y4 Z; w5 p6 ysetup-plots
/ y6 o. l$ N4 w! N' C
# S( K  h: m5 b3 q
do-plots
, n9 n2 r$ C! X6 i
end! l( R# C* F5 y: m+ Q2 Z

) W2 D, R, @' q, ito initialize-settings
% I- i: z% ^6 C- O1 z' d& l# N4 n5 [" \/ F* L
set global-reputation-list []
  u8 r8 o0 S& X: z/ T* n% S

) ]/ a4 t+ Y2 d' J8 Yset credibility-list n-values people [0.5]

9 u: n0 S" v/ ~2 ]
% v+ B7 u$ G0 F. S9 }# aset honest-service 0

; ?; K  }; b& K  D0 }, H) H/ ^+ R2 z
3 u$ `' n- z! m6 Q& ]  u1 |/ Q. sset unhonest-service 0

+ K) C4 R$ x2 S8 X3 l' i3 {: W) Z! _4 H
set oscillation 0
6 x0 o) V( ~" Z1 S. U4 f! D

9 t1 k' j. H; |) Sset rand-dynamic 0
8 R, f+ \6 v7 [3 s
end
3 O0 P9 g  t/ l8 N- ~* x" }- ?4 D0 o& `+ m3 \
to setup-turtles ' r# Y$ L4 J! V
set shape "person"+ I$ {$ p, L! K/ r$ y4 A
setxy random-xcor random-ycor6 z( m' Z2 s, Z8 \& e4 i/ m
set trade-record-one []" F( g+ |; ?+ E- y

" T: M, @# `" [* b% kset trade-record-all n-values people [(list (? + 1) 0 0)]
1 [2 F2 o1 Q5 n% }# `
$ }! f6 s' U# J
set trade-record-current []# o2 h" ~& |# ]7 d  \/ q
set credibility-receive []; V% \5 x: ^! k" r' l- K
set local-reputation 0.5
, m7 G3 s0 R* f9 |/ |* ^set neighbor-total 09 w6 ]& P! e# g# l6 A
set trade-times-total 02 y0 W$ j, M; |* Z5 _+ ?- R
set trade-money-total 0+ U! F2 b( u- x, A7 E1 \. D; L
set customer nobody
% N7 V  H# w8 B3 t* h  Uset credibility-all n-values people [creat-credibility]6 ~. |( y3 M% @# [8 K- v3 j/ b
set credibility n-values people [-1]5 M( f" ^7 C. A% i6 Q  x9 H; B# ^* L
get-color
5 G; k. Z/ Y) V0 `

: @9 T6 Z0 _( V, w5 D0 tend, P7 n" D% B. @$ _$ V: b
/ k% \% ^6 v3 _  `
to-report creat-credibility4 A- C  \/ q" h5 M) I* j( O) S& m
report n-values people [0.5]5 p: Z% e2 `, `
end7 L% {% V7 ]; v" p2 [( ~) o' |; n1 \' ~

: L4 x: \3 W) K# Vto setup-plots
/ x0 B7 r1 D+ J+ g1 |3 E2 P
: a0 ]: U$ D, D% ^# Mset xmax 30
0 d- H) w% C% k& h2 `

  a2 s! Z. L# [! Wset ymax 1.0

3 S8 \: G* F7 t' p, Q6 Q2 P7 T& ?. l  U9 O3 C3 O9 r
clear-all-plots
1 W1 }, b4 T' S" N+ g* o

6 n4 Q: W, s  B8 j* Bsetup-plot1
& T% O) M" n5 V. f( o

; q& i  H; S2 E+ qsetup-plot2

  z$ L# Q: G. Y5 p8 U. X
8 r  u* _2 `7 q& b  w  Wsetup-plot3

. ]+ R# Q( J0 qend
9 h4 A) \5 E3 F! E. g& a' ~* r. ?1 Z+ _: d* y" w4 R
;;run time procedures
& x, F  M  i7 a2 L
- {1 K# A1 F8 G+ s6 c( ~to go
' Y9 b6 `) }/ V* a1 F& ~0 P- {  s4 t4 K6 n
ask turtles [do-business]

# \3 f8 X( K5 R8 l( Z4 o8 J0 Hend
6 C, z- ~+ I! M* v" I5 S8 S8 ~! M- }
: W9 p4 _- v8 Ato do-business
6 z$ _9 }3 ~4 p$ v6 h$ f, ^

' N5 R' @+ h* l. X$ S$ E( |
  W) C. m; X) B$ P1 Ort random 360
- f# `: Y  K+ \* b, s, q$ i

$ F, {$ H) R% ?* Q$ X3 l5 Ifd 1

! u9 ^, t! z- Y& W. o& V5 z7 J( ^  d7 i# ^( q7 A0 N4 q
ifelse(other turtles-here != nobody)[

) @4 ^' w* N- C. Y" e4 s' r& c! D) P+ R
set customer one-of other turtles-here

9 j. K9 g2 z! r5 @, k6 J' z2 y' H: [$ |* W" s7 J
;; set [customer] of customer myself

# `* j6 j5 e' F( \+ w9 X/ x1 _6 J, g% q0 [& x4 l6 X
set [trade-record-one] of self item (([who] of customer) - 1)3 j; O. q' X8 n& L$ m; q+ ?
[trade-record-all]of self
% N$ W$ B2 {+ x8 E) {8 Z  `& i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) u5 Y1 E% w' i) i) g# f# g3 E3 b; ~$ t
set [trade-record-one] of customer item (([who] of self) - 1): z; q! b. B- q: [' l
[trade-record-all]of customer
$ ^  ?" ], t. z3 j8 E" F3 l/ P

3 Q" E& {! J; xset [trade-record-one-len] of self length [trade-record-one] of self
9 k) ^; |4 G- r0 x, B
! [( N: ?. `- K4 `# U" d) g; F' t
set trade-record-current( list (timer) (random money-upper-limit))

( \. G" O9 N1 r4 B( e0 H& ?* V* T3 ]- _' R
ask self [do-trust]- z1 K% Y9 C, V) a
;;
先求ij的信任度
. b$ \3 H8 E# h& I. L/ h3 Q) k- }6 u0 _
if ([trust-ok] of self)
% K$ r8 @7 ]4 q/ D7 G;;
根据ij的信任度来决定是否与j进行交易[- l6 J; O3 R5 ~& `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ g! @- c  K" q. ]

# i: l0 G$ O0 P; F& j[
5 k5 J$ u; l+ L
2 x: y! @+ S5 Z
do-trade

$ Z4 {1 E# I" b8 c6 H9 J- o+ c7 g' c$ B' \: u
update-credibility-ijl

' Z  b$ F6 g; g, m2 j% f8 ]
; c6 a' o. k& w0 d- O( J% Rupdate-credibility-list
! c  n% J! r4 d

# X/ m! N( H' s4 N
% \2 m0 {1 E/ P% a5 |$ Z  K  cupdate-global-reputation-list
- K" f( N7 K2 I) F. h6 Z
2 }# ~3 g1 g: P2 s+ \& T4 t& m3 D
poll-class
* R: ]% H" L1 L! _( ~
( ?3 m; W8 d) A$ r
get-color

" L1 j% Q$ e! ~4 r" c& s7 m! Q( a: e8 h2 R. |. R; p
]]; I% T* N# `5 z# J+ a0 d, b/ I
: e$ y- [4 X5 k5 S3 F7 c5 I
;;
如果所得的信任度满足条件,则进行交易) c) T0 ], [% s2 Q: |

% w) A" {, R6 A% d[
( ~2 G' I( R7 L: [
* s7 G% z: B/ u' c( O6 V$ W7 z
rt random 360

( s* C, ~; ^$ h; r  e5 x% U5 e8 k8 V3 `" F) d! E' M$ c
fd 1

' [5 K0 v& ]" ~( L1 b1 X0 C3 G7 |; e; ^6 c' V2 [) u+ Z, ?7 j
]

) Y# l, d3 E3 f, k* i0 I. \+ m) N* V, ?$ G) i
end

- L$ V$ e9 o6 g& I2 h
9 [- Y: ^: y. x" cto do-trust ' R% a; a' k2 ~% H8 P: V+ |; Y( a2 D
set trust-ok False
- h2 z: S, }0 E7 A1 z+ w2 N2 `( N1 {( S3 m7 l
3 T1 f# A* A  M( t
let max-trade-times 0# Y! N' Q: M, N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 E8 L/ a9 r! f) olet max-trade-money 0+ N7 t7 \3 E6 F9 t# `, ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 [  t8 [( V0 X0 Dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)), o5 _6 m' W/ k# T( H

7 _( l! G  k) ?, _: q/ ]7 P

- ?! W1 p/ u  R5 q+ E4 ]get-global-proportion5 D9 D# N% v6 a0 X7 B2 @* J! B
let trust-value
& K  w; y6 |$ p: g" 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)

8 j% s5 J8 g' D8 Gif(trust-value > trade-trust-value); q& @. d( c7 _5 L) {! B$ F3 u
[set trust-ok true]
& M. n2 \( C# _2 |end
' l2 u5 C+ \( e% J$ t2 U: c
# P8 P8 G( b7 Z% L8 J" U2 x7 @to get-global-proportion. G% m6 m/ [. ]" [# q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
! |) i5 O, x: }, d7 V[set global-proportion 0]
/ t$ T. O, m' B[let i 04 H% x1 c0 O8 z5 V' N4 E' Q
let sum-money 0
5 L, I' z1 H' l+ Y/ \4 \while[ i < people]0 E- P, u. b. J" Y; s
[
: x3 q) b: o3 _9 Q1 n- k0 ^if( length (item i
" V1 Q  `4 T+ P[trade-record-all] of customer) > 3 )
$ o9 H9 w: S5 W# J3 D/ ^
[
: C' k2 Y, f; w- Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
3 Y+ ^4 r2 P+ \" M, H% U% p" W1 b$ ]]7 o. h9 `. n& I* F3 x1 y
]( I' `; F- ^6 L
let j 03 p- W& U  F4 v( x, I
let note 0
6 E7 R7 H9 v9 l8 |  [' p. r8 M& wwhile[ j < people]
1 V/ F( T# A) C1 Y4 H0 k4 A; Y8 D[. G. X& ?# r2 Z0 A& U. H0 r
if( length (item i
4 R$ ^6 c, O  `0 _0 s[trade-record-all] of customer) > 3 )

: R1 l& [9 E8 w8 s0 p$ `2 ~3 @[* Z; H1 O8 s  U- z, s0 M/ N! ^
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- e) P' Y. {8 y[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 Y# L9 _; \6 g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. Y% M( b+ G% U' c! ~2 n: T7 M
]& j) T- Y: D) A& R8 g; r
]0 U; K4 S2 o' V* D
set global-proportion note( i6 j6 ~6 y+ \) [! B- d* R- `
]0 \/ R7 {5 f; B/ Q7 N2 c) J6 K
end0 i! I; \6 i4 p
# j2 P/ E9 H( _5 F
to do-trade
* a2 N3 S8 ^$ ]$ f;;
这个过程实际上是给双方作出评价的过程
4 M1 }: t# N; [9 h% _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 b3 x( {$ H; L& h5 Q6 ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& G1 _6 e- \( L: t
set trade-record-current lput(timer) trade-record-current& ^1 R- I0 d3 L* I$ H9 p1 L3 y3 H
;;
评价时间4 f4 m+ S; r4 S8 A: o" u3 j9 g; G* ?
ask myself [% }. ^, ?* o- P  Y" N" j
update-local-reputation
+ r4 x. C+ f5 G# oset trade-record-current lput([local-reputation] of myself) trade-record-current
. t# }6 e) x6 {: }* B1 t$ A' d* h( Q& j]
: s. O5 i! v9 N2 d0 X0 Vset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 l3 d% `4 V0 W/ ^# T# w6 W;;
将此次交易的记录加入到trade-record-one+ {* n5 Q0 T. n$ F+ ^. V. k6 r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- c9 c8 X7 o5 M$ I
let note (item 2 trade-record-current )+ I, n# l% Z+ t9 D) _
set trade-record-current9 b1 Q+ }( i+ \6 l! @! s0 X( M
(replace-item 2 trade-record-current (item 3 trade-record-current))

: T) Q- C5 s& V9 T% w- Kset trade-record-current1 j1 W9 g+ i3 u" d( [) [
(replace-item 3 trade-record-current note)& y3 C; _$ N% q8 z$ o& ~1 ~! h* o( m

7 Q, B/ b( U6 A3 L, ^) c% X
& |2 k  c" [7 ]
ask customer [2 j" H" |" P: z: ^5 Y1 |
update-local-reputation7 j" J: O" W- U
set trade-record-current. ~7 i% W1 @8 J) L2 D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

# I+ W2 i. {; u+ [  Q], X  V/ }9 I3 }) K

  e% c3 Z- P  Q  h3 |
  v; ~8 }$ Y5 e% d
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! t- E, @: J+ A  i5 t% T3 E
. H* H+ l1 o7 \' e% @+ u; h8 n& V3 d- n
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! [/ k. f$ ?7 f. B' ^# G6 O
;;
将此次交易的记录加入到customertrade-record-all
0 [& h" n8 v0 {$ y' c) Send1 B& X$ X6 _* w3 Z

  f. I- S& Y2 `5 g4 {9 v& ^9 s! Qto update-local-reputation
7 Y0 u5 e" H) R; N. A* aset [trade-record-one-len] of myself length [trade-record-one] of myself
" q8 y( F' f1 V. d4 B: V. U/ k7 d& b4 |- W+ R2 C
$ c: A8 T/ X- ]
;;if [trade-record-one-len] of myself > 3

$ n7 X2 x) v! ^5 X: l1 S" Zupdate-neighbor-total
- ^& x3 ^9 ~3 F4 r; C+ V& V& |; [;;
更新邻居节点的数目,在此进行
$ y* d6 T5 w5 d6 A5 ^, H8 p8 vlet i 39 ]' d- e4 j' E3 g2 Z( m
let sum-time 0* n% ^$ S% n5 R8 M2 Q
while[i < [trade-record-one-len] of myself]
2 \4 A5 U5 ]4 j% X[: ^5 T  \4 C. A( F! m- G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ g% G# t( D* c  h* F+ t- W/ ?
set i
; n  V& U3 G2 R1 a( i + 1)
& q# K3 N3 o4 |
]% F5 f. F% W; b% m5 T
let j 3( M1 T, w# q( R- ^# P# t
let sum-money 0
& z5 N+ s8 S; r& [4 C8 k' L0 Q$ [/ vwhile[j < [trade-record-one-len] of myself]
0 J/ K/ ^% w0 ?2 K# I# U( ]2 Q[  ?2 ?) s2 E6 I' D+ A! `
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 |8 E% g: Yset j4 f) G1 c  F) T3 S
( j + 1)
! a) ~6 x7 v/ @+ K7 h0 v; O
]4 K% ~: D/ U  O1 z, ?8 ?/ ?
let k 3
2 L, p- _  R) P! d( K4 f% i9 slet power 0
; t8 [9 d% Y+ h/ R" R* glet local 0
" z, ~- X! A) K6 r5 w& ^while [k <[trade-record-one-len] of myself]
0 T8 |, ]: I, }9 u' J9 F( i8 q; \[
8 T3 T  G' |2 _+ h: p: eset 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)
* A( J- n; `, }0 W' {! q  T; |set k (k + 1)( s: H9 w& D! }" a  u" L% n
]4 y& a- k! Q& z, B8 t% n
set [local-reputation] of myself (local)6 \' a1 B0 ?* Y# B: z9 M1 c, D0 o7 V
end0 n. ^2 t6 w+ {, I2 V( {) N8 r2 C

1 p1 @/ E0 a5 uto update-neighbor-total
9 v/ K# \3 ?, r7 K3 x
: A2 u% h% D* L. f# n/ z: Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ k( L) g+ Q7 I( O/ H  m3 U3 N& `! E) P8 }8 i7 K! p

* j4 q7 T* O" e+ C* b, `end
5 p$ r% i( h4 K* {8 a6 J8 y9 U' F& y8 J1 a7 W; I
to update-credibility-ijl 6 i3 W+ g2 g( O. Q7 i2 F) E( V8 F

6 V6 h( Z& {$ F# q! l;;
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。2 n  r  U) p; E: e3 k, d- }4 o6 T
let l 0+ H6 o& p9 P6 K8 a7 o! C
while[ l < people ]3 K; d8 s9 J" S2 W) 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5 v" t2 t# P7 S, p8 l- i& t, I5 G
[$ H( m" I( c  i: s5 F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)( C' m  i0 v8 q  L" H3 g+ b4 y  j
if (trade-record-one-j-l-len > 3)
0 t! n' 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-one0 |* c: E3 t- i  g- t4 k4 R: Y
let i 3
2 w4 i  e) L! l5 b4 d% Y5 m5 J8 \; Ylet sum-time 0, @; a! |' U5 F9 W% M* l+ ?
while[i < trade-record-one-len]" f" j( b7 ]/ y9 w4 b' {2 p
[
1 |- ]2 y8 x# x8 Tset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" I* Q; l- l1 C7 @set i2 O$ b1 U+ c" o+ [- |/ u3 h# p$ R
( i + 1)

) d. U$ x' N  ~2 m7 i]
0 B2 T' c% ?0 i. c- v! Z7 ]let credibility-i-j-l 0
6 q4 |  Y& ~# S  K;;i
评价(jjl的评价)3 |0 K/ L' r5 D9 E
let j 3
8 h3 c+ z- O1 z7 `4 `2 xlet k 4# B: j- R* b! e% |0 ^
while[j < trade-record-one-len]7 c- h- @- g  i6 c9 _% s/ Y0 F/ [
[
9 }4 u9 _  a0 S* {) b! Ywhile [((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7 v- Y+ r3 @3 R+ R7 _' A& y: @. i
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)  J3 b$ k6 L% S1 D- s' D. _& ]) T
set j. S2 J0 q2 x  h: P: I
( j + 1)

) L3 G2 c8 w/ T. P1 r0 C]1 y2 N) w) y& N0 K. v
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 )), N! [' v0 ]. J& x2 {8 Y

# x+ ?- }1 A$ t; ^4 U
2 C* C# o& m3 U. k* M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# F5 ], A+ Y/ T  b$ o' V;;
及时更新il的评价质量的评价0 C3 G9 E; ]' Q) X6 o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
; {; S$ _% K: S2 I# l3 uset l (l + 1), v" N+ X0 F- T# X$ [
]+ x, `& ^& w# Y- h- R: y4 q
end% k9 v# \6 d6 |4 ^

! y; c3 O0 B4 x, Nto update-credibility-list
9 [2 _+ Y: J, i  Z( I) Elet i 0# `. o- l! G2 Z9 w8 n
while[i < people]
; j( ~- L+ D" J2 N[7 U0 n$ N+ Y6 P7 F% p
let j 0
! B( Z/ C' {' a* {& H6 I0 D+ e8 Dlet note 0' P( V8 \: `2 q
let k 0
# T% z) y2 O; J;;
计作出过评价的邻居节点的数目6 [6 ?! d& v/ ^2 A
while[j < people], I- I! s5 b2 w1 V  @7 J
[
7 B1 {: o) b0 T% C! K' qif (item j( [credibility] of turtle (i + 1)) != -1)5 c& r+ G/ h( g+ Y0 u9 d
;;
判断是否给本turtle的评价质量做出过评价的节点
& x; @( h8 Z0 L! S) l* L[set note (note + item j ([credibility]of turtle (i + 1))); z9 K* i3 p5 ?* |7 w6 H
;;*(exp (-(people - 2)))/(people - 2))]
$ X/ K- p0 R; e' b! B
set k (k + 1)+ N+ v6 g) \, I* Y+ o# s
]6 t; U# `) U6 f
set j (j + 1)
2 a- g5 }! \$ w" A]: x% h* h5 O7 z5 q) W/ W2 q& k
set note (note *(exp (- (1 / k)))/ k)3 O: V4 a9 g% v( N
set credibility-list (replace-item i credibility-list note)& g7 U; n& X; A7 @8 L! i8 B' c8 a
set i (i + 1)
0 t6 i0 {2 R( \* G2 e]$ B& _/ I2 W. a* c5 A/ ~  K/ i
end; {4 e2 R( F  y3 K1 `  `

7 Q* ]' g  _: i  D: H3 wto update-global-reputation-list) X; n! V! s: p8 j, M
let j 0
/ f2 F' t" f2 h/ J1 jwhile[j < people]% C( v/ s1 J; a0 U& V" z" B
[
6 s+ g* c6 q0 slet new 04 k8 ?7 X$ ?5 c5 F
;;
暂存新的一个全局声誉/ ~" ~/ v4 V# \/ A9 D. K; I; J
let i 0
- u# P5 [- G9 l6 c8 O7 olet sum-money 02 x3 Q. J) Q" j# n0 v
let credibility-money 0; [" }6 s& u+ [8 \( [
while [i < people]7 J* F& C# d( k- q" `9 I
[& F* T0 c- i# l' ?  ^, {6 S8 h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' R  V* v6 ^: {- j  @2 |+ Aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
) {* P+ p, g3 L- q! [0 m/ ]2 Z0 Dset i (i + 1)
) e) p" [+ p- ~; v* |6 ]# n]' x  x6 M/ \. N& t. [
let k 0
6 j9 \! L# E4 }let new1 02 G9 v" R$ x% \3 p7 g- h# @2 O' w
while [k < people]
$ ~- q( e# w- F/ q4 u[3 x* G* a( Z0 l# o
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)
) ~( ~2 Q$ m5 O5 d9 jset k (k + 1)
- k/ c# R8 \8 i]* V' z* \$ ^5 W# [: e  t$ [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * @& }5 a% b. m7 s8 V+ N9 U
set global-reputation-list (replace-item j global-reputation-list new)
: f" u; n! D$ `& Y( J6 |$ vset j (j + 1)! B: v) a- k0 ^* Q* ^  j9 A6 W
]# ^' Q# e4 Q- D* c) K  l
end
# @" L4 m& [0 m( l; m1 O' B9 J2 d- n; [

" C, b0 J; `% \0 O5 t: d2 s/ k
- v9 k+ J' W* |! w' ?& Z; B! gto get-color
1 ~/ C9 B9 I+ `' C3 _0 [. |0 c! l
set color blue
: ]3 H# i- m. l. D5 I1 o; w
end
  E7 q0 y: f/ T9 }/ p# R
4 o6 J; u6 `/ b- Q3 Z+ |% I4 ?, ^to poll-class  C# O" _$ R8 v6 f  X' [& N. O6 q$ Z
end
% h( W* a3 w; G/ D- J& F1 B
: w! e3 f5 J8 h  I! n$ c" a- F+ rto setup-plot1) {' s( N2 c' i6 A( u

3 m- \6 H, Y7 s$ D' c, fset-current-plot "Trends-of-Local-reputation"

! p  o7 u+ o( N' z/ @8 _7 D# [; r; g+ _/ C9 ]
set-plot-x-range 0 xmax

. y  Z; i. ~) P" A7 N# C3 c7 p# M) d2 l- Y& z; U+ K4 u6 N
set-plot-y-range 0.0 ymax

7 Z" J' F: r3 L. D- H0 j; `6 }end, H, b- @! R. w: f) I- m1 J
& j/ e  j: z) y1 m% f8 C
to setup-plot22 g) O4 `3 ^, ]/ h

% a; `: V% c& G4 k2 vset-current-plot "Trends-of-global-reputation"
$ o; `' [$ y/ G9 y6 F

4 G0 U) X& K6 O9 f  F; ~set-plot-x-range 0 xmax

: o- D. M9 E& C* ]+ l- {- F
" _$ q# T2 e/ vset-plot-y-range 0.0 ymax
8 \& @" b. j! k, w! m  @) w  G; L8 _
end
5 C1 S0 W+ K: x( z
1 G" H( o( @# eto setup-plot3; X# l/ ]$ G  Y; K) {

- ~0 O" S% v- E, J3 |set-current-plot "Trends-of-credibility"
# x5 y5 ?0 F/ t" x4 q
8 T% I5 B/ x9 p2 X5 {, o6 s
set-plot-x-range 0 xmax
$ J) C* M# O) k' t8 k8 u
& D; ?1 W/ d( c+ h  |1 R" x  y
set-plot-y-range 0.0 ymax

. d& {8 e# ~" w" w/ Tend
% g2 E) I: f$ J% L
- {1 t+ @% P  ]to do-plots
3 m6 z9 d) z: d" l9 ?3 p9 [set-current-plot "Trends-of-Local-reputation"& T. L0 K3 f, {- t! n* W
set-current-plot-pen "Honest service") q6 [9 l% y* N4 N1 h
end" Z1 U8 {6 c$ E3 T" E6 g
$ G, M( z0 u* k
[ 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.
/ a* Y/ O4 y7 N+ e1 j& k5 R5 l) Q- W  u8 K6 ~
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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