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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:
! |0 Z$ {; y8 _( r0 K  ato do-business
8 N( p- ~" I6 o; |" y1 C: e rt random 360- `2 L0 s3 M6 ]5 t3 D  e  k
fd 1( I/ L! n- _4 s$ Q
ifelse(other turtles-here != nobody)[+ `% _% ?: s7 s/ a$ i. P- A, v
   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.
6 C0 I; ]) e/ o9 L. I" c! O   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ [6 O" j) p1 d# e. j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. R- U) b" K( P. S4 H& ~1 v
   set [trade-record-one-len] of self length [trade-record-one] of self
6 g' w+ o% x7 R" q0 G   set trade-record-current( list (timer) (random money-upper-limit))! u3 w$ C4 S2 p/ v
9 x, D- F- `( k& Q4 o
问题的提示如下:
7 u; K( o3 O( x& i! M# N
& n. e. V( @5 r% yerror while turtle 50 running OF in procedure DO-BUSINESS; m4 |4 e3 E3 `$ m) G
  called by procedure GO
6 k' Q- p+ `2 w- y/ t2 dOF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ w; f" ?- Q% b, D; ?
(halted running of go)4 p4 K( k9 ~+ X

) l* U/ w+ r/ {: }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~~" a4 `2 x; 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
; O+ n5 C7 m! E8 a8 [7 \$ _globals[
3 D9 @$ B2 a, T' A% Uxmax4 D. y, ~2 R! \+ B+ {( a  D9 ?
ymax, m! x/ f. N& }* i+ h- b* x! K1 I/ J; H
global-reputation-list6 \9 j' }# ]& X5 z) N; X# u

& D3 I2 ~$ M+ p' o$ D5 t/ r5 c: C- @;;
每一个turtle的全局声誉都存在此LIST
- _! |% {# Q/ q3 P: q1 @4 Pcredibility-list! S1 o7 S1 y* d6 t; N: \
;;
每一个turtle的评价可信度
+ r" e/ P& p$ J. l  \honest-service
" i$ j6 A1 q* _8 D; E5 D* h$ nunhonest-service
5 d" Z) G6 ~0 X6 y8 eoscillation
' X8 s) y7 p7 v  c" Srand-dynamic
0 k) ^. m& N( {2 g- U]) X& n& I( h7 P& Y7 x. e8 e

. Y* T( N& r: x% I$ O" s0 C7 Xturtles-own[; P' n# w+ T1 E
trade-record-all$ T0 C7 }4 F! R. G
;;a list of lists,
trade-record-one组成7 d( }+ D$ K# d1 G2 I+ |" t; J
trade-record-one
! v7 q( c4 b$ P. N- 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
$ w/ Q3 m# O/ h+ J' z# F# r: B& v! B  E1 J% y3 `
;;[
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]]+ |. S% f1 z* `, S6 z( C! f5 W7 R: x
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]
- E" y& r0 p. l8 j+ kcredibility-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
& B+ ^( k' ]# J1 d+ {/ M3 Y$ Sneighbor-total
( p0 @- i' n5 O2 d;;
记录该turtle的邻居节点的数目
$ e' z, o/ q! w( m" G- J8 G$ atrade-time
% b) e8 ^# _& P  P;;
当前发生交易的turtle的交易时间
6 q& I! P: {3 J$ L8 i! `- Z3 M. E7 kappraise-give4 \8 J" B/ E1 `& G
;;
当前发生交易时给出的评价5 r/ q7 J8 L" r; Z! n
appraise-receive1 M- K. @0 }" |% L
;;
当前发生交易时收到的评价
# z: U$ H* G9 t% \% U5 lappraise-time
* y1 X9 F# c% v3 l" s;;
当前发生交易时的评价时间
$ {5 z, @! E5 W9 T& ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ y8 b/ u5 p9 S0 W7 `trade-times-total
& `9 \, g9 ~6 j! d1 t8 _( Z2 J;;
与当前turtle的交易总次数# n! z" k) L5 S; S' C
trade-money-total
7 @7 ~& k) n6 n3 d7 a5 z/ d0 f' F;;
与当前turtle的交易总金额
" l  Z, @. `4 a* \. U- Flocal-reputation
' w) v+ j. n  J' Iglobal-reputation  z1 B) c! K1 u0 V" F% C
credibility
% I& m% X. t+ f: H' p;;
评价可信度,每次交易后都需要更新
" H) p8 b3 \# Y+ Ucredibility-all3 D% \# k; h$ n7 L- ?, m* 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
' B+ P0 k+ b7 h! U9 Y, q
( {1 d  s& ?  y! w- N5 J;;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
6 g. E) y- v& h! g9 F: t+ [4 zcredibility-one' U# U; t$ f2 Y. n  S$ r, R( d
;;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
. R% W  G, y  e- ?0 x- A5 oglobal-proportion
; t; q' X1 K$ D( t* X/ M( G* e5 Gcustomer
# X* ]4 z1 Z7 T2 V  H% j3 r. }customer-no
% {9 ~" R- Q! ^' Atrust-ok  Y1 C' Y. N8 u% \# ~: P3 \# w! c& `
trade-record-one-len;;trade-record-one的长度9 x  H; E; P* d, U9 |4 Q0 O2 Q2 c
]
4 r% a' X3 S2 w: p) {1 \' I, b4 o1 V2 H1 {3 w# f
;;setup procedure3 M$ }: N* ?# Q$ y; w# ^4 d& D
: K) G% Z: G  d" r2 k& G
to setup
" R( j4 I& H" J8 K' t' e5 o8 d" J: y. v  Z) Z, ^% i0 Y! {. L
ca
  o4 p+ {! m  `/ Q: o, P

* }! o; W4 {# T% d( H, S6 P2 t; Sinitialize-settings
; E! c0 r2 M4 g' u
6 d0 ~7 T1 w3 c$ r
crt people [setup-turtles]
0 L% I* O. X+ T0 y) N; {/ C# [

  S6 [5 Y/ g5 m! Vreset-timer
# r% D8 T. }6 U; ]+ I$ o& t

" a3 I# f2 g8 |% \0 Hpoll-class

, r. Y" s; Z7 g/ o; _2 ]1 K5 _) L' P8 i% S: I" {8 q8 ^
setup-plots
, q4 }' ^! |2 t: B& w; T. j  U
. P& ~- @7 ~: X, T& A
do-plots
) B' c- a( J. J# S
end
$ L% f& g! I  a" M1 {+ @* a
. D8 {* o8 u# j  H6 d- lto initialize-settings) u2 w- [" [, G: n& ]

7 h" j; L' @. y. @9 ]( Zset global-reputation-list []
) B( v2 O8 @; g3 |+ }
' J& N5 \4 g, P) t: P0 e! i
set credibility-list n-values people [0.5]
! H) w7 d; ~6 }# F$ T! N  S

- z; ~% _6 G1 E; Z" l+ qset honest-service 0
! K1 V( i" @; b! g3 J

0 `( A, `! U  ?) J3 q5 Pset unhonest-service 0

) d/ U; G3 D) ^7 W5 i! }
4 q5 a8 y/ i6 o) _6 h$ }* uset oscillation 0
) ^# _$ F* |$ _' _4 b( w' |/ h

+ ~  [+ Y7 F4 u" eset rand-dynamic 0
3 P8 _7 d  C( Z- ?; O" K8 f. O- S5 C
end( [0 A$ ]% ]4 ]/ n  e
# W8 L9 p/ J$ e2 o) i8 o
to setup-turtles
( ~1 K' C# }7 o3 Y* L2 J3 rset shape "person"6 i0 r4 u  e0 j! @( j& U
setxy random-xcor random-ycor
4 j- _" v4 B  \, N/ P1 s) _' m6 }9 Nset trade-record-one []5 l- \8 k7 q& _
  N- i+ J" Y  h  b
set trade-record-all n-values people [(list (? + 1) 0 0)] , o2 ]7 a, K$ d
) a2 X6 p# R1 F1 R4 k# Q
set trade-record-current []8 @# `/ s  _" c" e8 K
set credibility-receive []  W6 F1 T/ G# }& _
set local-reputation 0.5
, _- n) i' A* Q. E# h8 Hset neighbor-total 0& Y( F. b- O5 A. U" N3 }" c3 w: N+ B9 i
set trade-times-total 0$ M7 U2 X8 S2 k' E7 X3 _. t) k) O
set trade-money-total 0
( ]1 r, h4 y8 |9 N& Y) s* Aset customer nobody
% {" V( Y- s# w( J) E# e) iset credibility-all n-values people [creat-credibility]( G9 F) X0 G& i% b
set credibility n-values people [-1]
9 k: a2 ^3 @) o& Pget-color
! r$ @" n" @5 N! ^1 m# y' M
, ^% s+ I. `$ z
end
# h0 f5 ~/ S! Y1 m: |
  \2 j" y  v6 i! Tto-report creat-credibility8 D# O+ Q8 c& f, r  p7 n
report n-values people [0.5]
1 Y# L8 T, H# `# P  g4 lend0 a3 n9 b# i1 I9 O$ ?( U
, E" s/ i2 m: x7 E9 l* b- c
to setup-plots
  a1 p- d/ ]* D3 z& {' k9 G' W! n! j- B/ ~  K7 w
set xmax 30
* T; [2 y! m8 ]4 a
5 ]7 T: e* `4 V9 c9 c7 k
set ymax 1.0
9 k- |0 w) Z4 P! q! V! ]

( Q& ?# k, H6 D$ g) t, uclear-all-plots

" U& J& F! ]8 }+ B; ~! l, U3 E% X- S$ O# o" \8 {( a( s; w
setup-plot1

6 |' ]" y: \) w' M& P9 s! Q7 J, m3 C$ C6 I, s0 d( E( k
setup-plot2

" @: a' A7 f. X( N- y3 A
% Q: k1 b4 `7 x9 ?* Jsetup-plot3

& {# F% C& E- i! X& m( Eend
! _  u. X, a- e  N% S: a0 [# S) ?# s, }3 i0 y  w# ?$ _6 G
;;run time procedures) [! w; U! L% S
* I7 ^+ e: ~5 q  M
to go
% s! i$ e+ @3 E+ e; i% r3 X8 E9 `4 r3 b" ~4 x, H
ask turtles [do-business]
: G( x, b& J2 w5 t& X( l# L, K
end5 Y) q0 G$ e, L$ a& c- @& ~) H
: D6 z. K9 {& g
to do-business   i! u. R8 V5 u

6 ~$ a9 Y' ~+ |: |
% o" K  c. n" U  ?4 L, Krt random 360

8 Q, v, n* s* y; T3 X' S/ \, o# \
  ]* \. `0 n. C6 r5 V0 o+ {* @* Dfd 1
! ]) P8 W! v. e; R

8 |0 @4 o. u' h! b/ H5 Tifelse(other turtles-here != nobody)[

7 ^3 ?' q5 c  g/ ?9 P
2 y. j% w& g0 i0 c' r% Q& U$ Lset customer one-of other turtles-here

2 N. p8 I  j  d; C  u" N- J' b' S, v4 ~7 m! r5 @/ U, P# _" x
;; set [customer] of customer myself

3 S0 p9 m/ u+ M4 u! q8 V" m) U* O7 s* `9 n8 U
set [trade-record-one] of self item (([who] of customer) - 1)5 ]6 q- p5 E9 l: A" c
[trade-record-all]of self
% Y3 _, V9 ~5 _" C( j! U- \4 f" D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 \- c* h4 L' @& t8 g2 h
) M1 F! r3 m% @
set [trade-record-one] of customer item (([who] of self) - 1), K  w6 a, }$ C1 P0 {: o
[trade-record-all]of customer

# \7 [  K* ~0 o' E* |, n0 ?
! c! D0 d" |4 Sset [trade-record-one-len] of self length [trade-record-one] of self
4 A1 R" l! O% U: N

9 M0 a' W6 i2 Z! ~set trade-record-current( list (timer) (random money-upper-limit))
; J- b7 m1 a6 o' W
% ~# z) N7 ?5 t0 v
ask self [do-trust]
. J: M: u! X% T, [& b, j# ];;
先求ij的信任度
+ D" [; j, y  U3 l1 C9 h  T2 _( W& x, v# d0 ?
if ([trust-ok] of self)
6 ]$ [' Y( _: I9 U3 {5 H;;
根据ij的信任度来决定是否与j进行交易[$ q9 O  b, p- ]8 m- I; c" V
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself' A# ^6 J( t, `4 p. w
( n" H- t' K; q+ F' V4 s' \: R
[

: z9 b. [+ E% g' k+ S" L" R
4 Y" G9 M- t3 I* ~- ?1 D, udo-trade
2 e7 o4 `: b8 H3 J) k8 E- {

0 U0 u) h: u" x6 l( E* C* Dupdate-credibility-ijl

0 \- w+ T8 p% Q$ t
, e* q. t. R7 j$ n; Lupdate-credibility-list, K. t  m7 @* d6 _  l5 @" Z) j

- A) c* O, T5 O+ t: Z  T4 p. c+ X" o9 x! l* L" I1 y; y# }
update-global-reputation-list
2 X. z( r' i; F0 W
3 ]# B1 L# X# }( f  ]7 R* O% e
poll-class

4 }3 O2 V, J# Q9 N+ s7 F0 k" w# {
get-color

, e. k4 L  Y, I$ B  j. S3 Q" W8 O5 R# g" R0 C  ^
]]
+ \# [: C3 I# q/ C; v5 k# ~& I3 [& C5 c# M
;;
如果所得的信任度满足条件,则进行交易
, ^: j6 Z! ]$ G. P( I# }- A4 u5 P. M' Q$ T0 R
[
: T. O1 T# u" J
; a) a% L! k' s
rt random 360

4 g. N0 R. O3 l* b' \; ^
: p7 {7 Z  z  g5 U& w6 [fd 1
" l. E3 Y. x4 I! I& p. E! d$ v
. K& \( O* G, J8 t1 G2 M
]
/ ]1 b3 P3 J% l. J# e, o( f- E

; [4 F2 Y* q* d; F" T3 i# V% jend
$ p$ O( J$ J5 |$ z' U9 \! O
5 y7 p1 K' X1 r4 w& s5 f: B! }
to do-trust
7 Z5 G; ]% W6 {8 W* m$ s3 f; dset trust-ok False; x/ P; l! g8 U

) O$ t8 C+ l! x& L2 |$ ?

- h2 }( J! h/ m% alet max-trade-times 0. A7 T# ^7 ]& b
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]2 _6 N) n: S6 r. j
let max-trade-money 0
1 m8 W/ r. b( M! m8 c" Zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 _+ p( n4 x. A* G) G1 o
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  }$ H. q2 i" s8 P; r
& Q: U3 [5 h- ], V4 c  @6 h
: D3 n/ @1 _2 ]; H
get-global-proportion
2 h# M' T" A) Llet trust-value
4 y4 `9 H- [! S) I, i% o8 nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

3 Y1 ^% Q4 W4 U$ ~  y6 J( S( Eif(trust-value > trade-trust-value)2 `/ P+ G  M6 o
[set trust-ok true]2 b2 o. i/ L2 e% {
end
" v3 i; T/ Z% b) r# H4 C$ {- U* `2 t$ |
to get-global-proportion: V2 c6 [0 Z0 M5 ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" A% [) B, j* m" ?. `/ j
[set global-proportion 0]6 R% D# X# |, @/ l! s- [: c
[let i 0; d3 y/ a. }; a7 Q
let sum-money 0
4 z7 V) {6 l' H+ q, iwhile[ i < people]  x5 P8 |# S  n2 I5 h5 S: Y; T
[% w2 ~) }( [: I
if( length (item i
) J9 `$ u  f: s' ^/ F[trade-record-all] of customer) > 3 )

$ d4 n, W9 \1 O3 |! U: \1 j[
1 X9 u7 o. }* D5 m6 v, aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))* ^1 I3 }5 N3 ~4 s
]4 d4 [6 r4 H  a8 I8 Z2 p/ C8 P8 b( R
]
  v5 x. k8 x+ L) j- Klet j 0
% J9 c9 B; `% O( m0 ]' t. x# Qlet note 08 y. D: @2 A% A' b9 \
while[ j < people]
7 ^* r/ [" I, Z[+ f+ f, z" P( V( @3 f
if( length (item i
9 T, u* \% ~1 w( X; o, V. o' d[trade-record-all] of customer) > 3 )
7 g7 f  ]; R1 s
[' m/ N' {& r5 o' B4 b
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% A, S$ S# k) q[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]# l, b" x& M+ g+ e, p
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 {3 W9 K2 ]; r0 P
]
3 i7 h# q% }# \, U; K2 C5 B]
% w6 ~, f9 T: B, V0 W8 W, xset global-proportion note
" h/ ]6 W- S0 `9 j+ z]
) E1 t- `* n1 k, I) kend
0 G% ^  W  {% u: ?0 R1 z% c) c# `) T1 z% o# N
to do-trade
) K6 V. l2 U. ^( _. Q* B;;
这个过程实际上是给双方作出评价的过程
$ @9 ?3 x) ^: Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 ?; z  r! M) |5 h8 I8 Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- V; F4 ?6 A6 i# n3 Pset trade-record-current lput(timer) trade-record-current
% h( m. H& [2 ~. V# g$ x;;
评价时间
  S4 h+ u- X3 Dask myself [
& _" C, G, e' f  hupdate-local-reputation
) x7 x" W5 @" n2 j! a$ O; }set trade-record-current lput([local-reputation] of myself) trade-record-current
* ^  m# ]+ r6 z) X3 V& K]
+ _' `. G% l# ]) z* @2 |, Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 s2 w$ o7 F! f7 q, j;;
将此次交易的记录加入到trade-record-one
1 Q; c' o7 w3 p& I- Y; X: `0 rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 \$ m. z4 o6 t. E( }% zlet note (item 2 trade-record-current )( R9 {7 A/ D0 c/ e, b5 r
set trade-record-current
' a7 R1 {# c4 B& K: \$ [(replace-item 2 trade-record-current (item 3 trade-record-current))

: B) s" m' B( F7 a% m; ^set trade-record-current
3 i2 `+ [1 N5 W* x3 e4 D) L9 q(replace-item 3 trade-record-current note)6 u) @- F9 v( Q/ ^
6 n- m7 ^3 S  a" c9 N: m+ y6 Y
* O. F2 }- e0 D# D% Y0 z7 s2 @
ask customer [/ e( [9 e: c, n2 q3 r9 L
update-local-reputation
; g- ^/ f. F- h8 x$ k9 W+ z0 b* Mset trade-record-current6 j4 F& M, q, g0 B/ b4 l+ y
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 r# D4 P! r6 J5 J6 ^% m2 k]5 O7 \/ B3 [) J' R- }, k8 m0 \
( \8 Y. Q4 Z) T, W9 m3 S) s
8 G) S5 {" }3 o6 T- U
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 c1 \& w6 D  V0 t: g( O

0 o+ j, H3 e) T4 R9 f' rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ _3 K0 g# G7 g; o
;;
将此次交易的记录加入到customertrade-record-all6 h5 L/ q4 t* H! q( f) _' ]* u" s) W
end
4 h6 J+ O9 M/ R* X8 u+ g
/ E- }* c& S% @to update-local-reputation
) O" Z  u  \# ~4 bset [trade-record-one-len] of myself length [trade-record-one] of myself
/ c7 M, d5 Z6 D5 F8 m0 [7 H
! w$ m3 g/ L, d$ p/ L
8 _9 I0 P# B5 v8 p;;if [trade-record-one-len] of myself > 3
2 `! v' ~3 N' }6 Y4 A2 j
update-neighbor-total
# ^' @5 b! t( s* }  h/ c8 j;;
更新邻居节点的数目,在此进行
( f; e  B) b% k9 O; }let i 3
  _% I1 L5 x! j% O- x& Alet sum-time 0
! z; X0 [0 ^8 B) O/ cwhile[i < [trade-record-one-len] of myself]
- a* w) S7 q/ j+ W3 P[& p* l3 H- b6 \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" Y7 D, ?6 M0 C7 k* L# c
set i
/ t' W- Q4 Z; O( i + 1)
" @/ {; i' R) ]0 [2 k# A2 m
]( L) H/ w, K. l7 D; Z8 V
let j 3
2 I; }7 J. E+ a% v9 s& xlet sum-money 0% u: b  C5 J+ x4 }! G
while[j < [trade-record-one-len] of myself]' }. q  F0 V+ @3 o+ i5 H0 @
[2 j( i1 F& n5 S: |( q
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), Y* t) F1 ^! H) R. r$ J
set j
7 d/ H. Q% t! E+ G( j + 1)
1 `6 R! i# ?7 c7 A3 f6 q
]
$ T1 t$ M$ w: _! U1 {let k 32 [/ f! d, v/ ~
let power 0
% w" a5 @7 ]$ P( U6 h' }let local 0( ~% n+ P8 l  u1 ?( z' h: w
while [k <[trade-record-one-len] of myself]# d  f) H# l$ x5 J
[
2 e: N% ~: E! K0 lset 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)
# [2 H* l& ]7 e3 P2 rset k (k + 1)9 i( p, c: U8 ^
]9 Z7 G( H9 W, L4 _' i
set [local-reputation] of myself (local)
3 h% M  D7 c2 U& Rend
/ u- V7 F' F9 i2 F% K" A- j7 [' s  Y% Y- u+ D. C& t2 B# C( q
to update-neighbor-total
: J' v( ~9 J: ?' _- \5 Q' w
' v$ _+ a: F# @( D+ T' C% H. nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]& R! a4 ~) O) G3 Y$ o( W6 |: T
* L0 S5 T+ \9 w3 T' f/ X0 |$ u

9 ?7 [$ h3 x2 z6 K) c( T6 Uend3 p2 U& S5 U6 j% w1 L+ H

) |' D8 ^" ^7 A8 W8 f5 W2 Hto update-credibility-ijl ; M7 G/ \% u6 x! Z  Y5 j5 W: d

' @' X8 Z3 t' c, @;;
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。4 U3 o) k: i+ `, i
let l 0- e9 j2 Z) m/ o/ U; u3 ~1 S
while[ l < people ]
5 L( e+ ?: b! A;;
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
) V6 }# Y" s8 F4 ]$ O5 W[% v0 ~! B3 j% _' q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) V2 t; ^" U! U+ X/ B8 ~5 Lif (trade-record-one-j-l-len > 3)4 m" {' @# U3 x0 w! F
[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
3 M3 k3 Y3 S  R: o9 Wlet i 3, `( B( R6 l4 R0 ]
let sum-time 0+ `0 s; x0 B! y8 n* W
while[i < trade-record-one-len]
& T8 M" j. w+ t9 g. B- t0 g  z' s5 d[
% o8 q2 W$ ]3 n4 Q3 k. Lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 F/ x2 O5 G  w4 c: Gset i! ^) h9 J1 X' Z
( i + 1)

, O% q' F% T2 j7 `! y  {8 R! M# N]" w+ z1 V: O' i# V0 A# _% W( y
let credibility-i-j-l 0. z: H/ n- c4 @2 r1 r+ `# Z
;;i
评价(jjl的评价)+ X* m9 j, o0 K: f& l8 D
let j 3
& t2 f; b% N7 xlet k 4
' X' s# r0 X/ v- ]4 q9 \/ Pwhile[j < trade-record-one-len]0 @+ @1 k" \. P& h" W
[
# |( Z1 j8 D" l. C. v& x+ x1 F% Pwhile [((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. Q0 [8 I( l8 D' [! ?
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)
+ N- x( ?- x1 s- F/ Dset j& w2 M/ }* }& S0 t
( j + 1)

" m, k5 d9 o# ?% \  v9 []
" L/ s- O1 R9 `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 ))( e" P0 L8 T6 q3 i

6 S: N' Q, N7 }7 a% |; \  @6 {

2 S6 J2 B1 b- V- r# flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, q+ H$ P) Q2 N;;
及时更新il的评价质量的评价- \2 y- I3 I: ]* M! `# M0 S4 j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- U; t, I2 ?( S
set l (l + 1)
8 }6 j' J5 B9 F+ y# D& N1 M]
! k% C4 a, Q4 s: Zend
0 L/ K- |& t) ^' W9 ?, t
6 B8 B9 p7 K2 N7 ~, P9 Oto update-credibility-list
1 [9 `" T% r+ K' a7 F% K6 Glet i 0
# Y# p. Y& e; z/ Z5 Mwhile[i < people]$ U& ^5 H2 ^" h4 a
[
4 E0 f' |4 P/ k% W2 B0 y0 I- xlet j 0
! G/ E0 s) ~( U4 G' N# flet note 0: g: b+ o  I& G5 ]9 T
let k 07 {5 n2 i+ t5 |: G% i9 p3 q. K
;;
计作出过评价的邻居节点的数目1 h7 e& R6 X8 o# {
while[j < people]1 `$ Z+ S4 G0 M7 T# F- v* T
[1 m6 r+ Z1 p7 s# A
if (item j( [credibility] of turtle (i + 1)) != -1)
6 q4 u' k2 q  m3 ?;;
判断是否给本turtle的评价质量做出过评价的节点
2 K; n+ g/ J9 X9 L[set note (note + item j ([credibility]of turtle (i + 1)))
3 {- d  n8 Z5 o) w1 d4 v;;*(exp (-(people - 2)))/(people - 2))]
+ j5 f9 {' D/ w7 n8 c1 }
set k (k + 1)0 Y; @+ ^  ]* p. |  m
]; k8 @6 a  @7 c
set j (j + 1)
* [: [5 h' E1 U]
2 C0 i6 @. w% d* |set note (note *(exp (- (1 / k)))/ k)
5 L: L% E# A* l& X6 Q/ w- J8 {3 Gset credibility-list (replace-item i credibility-list note)
  }9 F' c! @; e% pset i (i + 1)
# l% O: K% B. y]; m8 k' a% W! z  J0 A
end
, x) c) T; P8 @8 S/ x& T
# Q  w; S/ f! ~' P3 oto update-global-reputation-list
! @  y  \2 w; d# k) e7 Alet j 0
  x* l. \: p7 D" wwhile[j < people]# p8 N. H+ [& v: j3 j- \
[
6 ?* q  p) i5 ]1 H8 a9 A* P+ llet new 0
" `8 U' y5 N- k- D! ^;;
暂存新的一个全局声誉
  y6 b8 f: b' _6 ?% qlet i 0( q) G! `9 j0 M: a% p& w* c0 {
let sum-money 0
3 C, a0 B' B9 zlet credibility-money 0
* [! w, o% E. m2 Nwhile [i < people]6 H) u: I- I4 K" g' I
[% m' l- \3 |7 C- V3 j; S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 c3 Z! ~# F# J% {0 o/ ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 G- X$ V7 G! m$ I5 s
set i (i + 1)
4 E2 ~; d' ~/ ]4 |0 O( P; D], }* S' {  q. U. O1 ]3 G' F2 M
let k 07 G5 H& A6 d5 s4 @0 K5 m. n
let new1 0) t* t8 U0 _3 Q
while [k < people]; i& a& U: }9 P( K1 `$ ^7 K
[. ]- ]0 E- X' M! G, @# B( {5 n0 ^
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)0 z% j' b+ `# s
set k (k + 1)
; a8 S( X3 z. N5 L# f$ s7 `3 C]1 a4 X. w% j$ v2 _& I- `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 R) z1 n* I; @
set global-reputation-list (replace-item j global-reputation-list new)1 B7 K' D, q- f8 D# j
set j (j + 1)
' k. m5 q; u3 Z- z3 y]9 ?  N' |2 M: F  F
end
  U  r7 a2 A" T* D
2 j1 R; X' k  ], Q6 O
5 L* V. t8 X& R4 P7 w( g1 n( B% r9 L$ N
to get-color3 A6 P! I  v' K& p- z# o

* k$ P; |7 i6 n, ?, t! U$ zset color blue
: D  j+ D' t( L" T2 ]: P, [
end2 j" \5 o( f9 u) m3 n% S) }1 m

4 W( U- \7 t; C  s& oto poll-class8 P" v/ K. r  x# _+ u
end
+ ]  M; |; U" W. ]: V
7 P0 O$ d4 F; w% ?to setup-plot1
1 h8 \, h" F2 v
! ^  |/ j" p3 H) l- v$ E: Nset-current-plot "Trends-of-Local-reputation"

: x, B+ W5 z- B% i* q+ v9 u# p& U4 w
set-plot-x-range 0 xmax
% G+ {8 U7 H+ D5 J. S

% }4 |7 T* _* B& v' p3 qset-plot-y-range 0.0 ymax
4 ]4 ]! {# `2 k9 U) d" q
end
" q8 X* A$ Z) J  {' D
1 W; ?5 G2 }& U9 i$ V# S( ]to setup-plot2
  {$ R, f( }4 i) q# \% ?( p3 z: G9 L4 V
set-current-plot "Trends-of-global-reputation"

& z: R, }3 B7 [- {) O! T& Y5 A$ f& i  A, [. A
set-plot-x-range 0 xmax

" `) O" W; e) p
; w( q& B) p4 G/ c- Lset-plot-y-range 0.0 ymax

5 f) @; O& @2 D  n9 [# uend
- h' X/ Y" D: S; n+ h1 |0 f+ d  B% p8 z6 c" c; F
to setup-plot39 v- e+ _' d" ^7 L/ @

3 i7 ~# _& V4 |3 Hset-current-plot "Trends-of-credibility"

0 \0 q; D0 M* r+ n  N9 D9 ^- j+ O4 u: S& P1 I" j0 m
set-plot-x-range 0 xmax

7 a+ `4 I$ Y' {7 v$ z
2 Y- V' l/ F! P; Q/ `/ ^set-plot-y-range 0.0 ymax
6 B1 U+ \3 R  \  n$ l
end; w& p; O2 C4 x# h

) ?# I2 v9 q/ K& ]to do-plots6 N/ g9 d6 d! E+ L; m
set-current-plot "Trends-of-Local-reputation"
9 X$ E( W8 P, N& e* H# R6 }( Cset-current-plot-pen "Honest service"' p8 L) |/ G8 G9 V" ?
end( c+ O% r9 m/ C* L) [! Y
4 I  M5 a, h0 |/ t2 w6 M1 x9 H
[ 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." s6 y1 A6 v9 w: ~# N4 b

; c3 }  D( p/ v# j" X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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