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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:' g. B7 k2 J5 ~% F- ?, x9 ~- a
to do-business
" j* i3 @* E$ Y0 P* B9 G rt random 360
; }# P- B) h+ \+ R' S+ v5 j7 q. n fd 1
, U. w* D  [( z4 ^ ifelse(other turtles-here != nobody)[
/ Q2 G' w( Z0 v5 T- c1 Y   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.
) j, ~; `# t4 y! }  {8 o   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 D$ M/ I* j; o9 N: t; a, Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 m' c3 P, B! S* b& r/ Q( x
   set [trade-record-one-len] of self length [trade-record-one] of self
) c' P9 i* n' Y' m7 \   set trade-record-current( list (timer) (random money-upper-limit))
$ Q6 ~" Q2 Q& Y. H
: c' J  P0 Y- O. d问题的提示如下:/ O" o3 p4 x: i% U( w" |
" H! i8 h# M$ s0 a; r$ H8 ]# l
error while turtle 50 running OF in procedure DO-BUSINESS
; l* X4 Z) t% I, p) K  f+ ~" s  called by procedure GO4 C' G( R( |7 V) E
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, N3 E# r& o  V/ i* _
(halted running of go)5 S3 A, j$ F. F- ^: J' |

& f8 ?1 p# _/ E4 J  @4 s" Q2 L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~~% y! m) ]" [+ \4 g! }( u0 r/ Q8 k6 O
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
! `; X( Z# b, E! R: ^* F" b9 F/ Yglobals[9 x0 F- r; {5 w3 |% X8 U
xmax% g9 _+ Z  m: i
ymax, k4 W6 L; @* y: z
global-reputation-list0 y5 M1 i& |) I# g4 u, [
0 V: R6 X* V& ?2 F2 h
;;
每一个turtle的全局声誉都存在此LIST
' n$ P. T( L2 S2 p! e0 Y4 a+ xcredibility-list( _1 i7 }6 |6 w: c. O6 D2 y
;;
每一个turtle的评价可信度6 `' N* x8 |! S# C  n0 u- Y) |
honest-service% }1 E7 U- h4 z9 Q/ G4 w
unhonest-service
. ]* |, |' m& t  h8 Woscillation' ^# O6 @. E6 {: P: a
rand-dynamic" a7 I9 ^: S+ g: Y! W4 u
]; G1 y0 {. C6 b1 z; G

: |' F8 H/ |' |. Tturtles-own[5 V& _* ?* G( \; u  ]
trade-record-all. w4 }# v+ W1 G
;;a list of lists,
trade-record-one组成& ]$ t* Y6 M" N9 H' ?$ s
trade-record-one! o8 ?  Z+ D( h1 s9 G; k6 f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
' N( N# v4 S* t' u
0 ^& }( S2 u3 R1 A) J* Y. B1 K3 Y;;[
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]]
$ H- D. i0 T+ J0 m* ftrade-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]
) \4 D# o' @; l3 x) \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
  i8 \2 |( w9 [2 p7 xneighbor-total9 W1 x( ?/ a3 p' a( O
;;
记录该turtle的邻居节点的数目
: x- Q1 j1 G5 ~8 ktrade-time
* j% W% B% ]( O! C  X' x, z;;
当前发生交易的turtle的交易时间
, y" S+ r& h- J+ Q9 fappraise-give
  T0 ]( N$ G+ J2 ~  m;;
当前发生交易时给出的评价: Y  q& `* H2 S5 |
appraise-receive
- N; J+ I) d8 a. u7 P- d& P+ a;;
当前发生交易时收到的评价- w; j9 L7 v/ b
appraise-time
# J& C/ B! c( p8 P: b: A;;
当前发生交易时的评价时间
( t; l5 d) z) }6 w+ K$ K& c6 Rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
: K+ K, {, B& [, ~trade-times-total  O: |% K/ y+ \- g& _8 C
;;
与当前turtle的交易总次数
4 x  h' J, M' _6 \trade-money-total
# D5 s, X/ n# m8 |" E;;
与当前turtle的交易总金额
4 F7 e# V) O" v2 e8 Llocal-reputation
5 l9 j) k0 _% iglobal-reputation6 b# O, i4 e& M: W( w
credibility
" U" ?. ?6 y: I1 S3 z;;
评价可信度,每次交易后都需要更新
3 a8 ~! G0 x, Z6 s% \  S) Fcredibility-all
/ F9 v3 G. k$ u* x& g! v;;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' W* b5 R6 U! m0 W4 O
$ \3 K0 `! E; F! ]1 l+ {
;;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
8 B2 }$ u! d- g; Q" a8 H6 O& \6 hcredibility-one7 W- E; s( D! F" B" i5 }7 a
;;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! |/ U) k" B' l; ?- C4 d
global-proportion
( V, n5 t: M7 O& R  D5 M$ Ucustomer
7 ?% t: {3 x8 Q. u9 ?" w; Z  g4 Jcustomer-no7 d4 E( w3 \0 l. b* q0 Y' t- a* p* K
trust-ok
6 C# M% [' O  P' Jtrade-record-one-len;;trade-record-one的长度
+ `4 N7 q$ q0 y* P( A]% F$ @1 m) J! m" Y4 U
( _" e. L5 R) y4 p
;;setup procedure
8 x6 w/ @3 X+ \/ b- M# f( V, M2 H. ~& E  k& n
to setup
! X: j! j3 p" j$ _* ^& z: g' J4 I
ca

) G/ a7 X+ k6 Z+ y! x. v0 d, g- O8 h8 l. \
initialize-settings
- C4 l- m, C, u$ T  q! C

( |: k5 |) l0 A  vcrt people [setup-turtles]
  r6 ?$ Z# L0 q# N2 y( [

' u. d, q2 K: n5 }3 Nreset-timer
0 a" t# n* K& |) c

" ~; Z+ ?& r7 ?! H2 Cpoll-class

, _5 u7 e4 T, v2 G, O2 B1 v2 u. p
/ |( D: s# w: ?; G6 ]setup-plots

: E+ |7 J+ X- B0 A6 [' a
5 u% ]+ A2 q" ]7 Cdo-plots
' N. n4 l. ]; s0 D5 E/ m0 U
end3 }' _  @! s6 N$ D7 r# g/ j
% M# u+ ~9 k0 |' N" V
to initialize-settings) e( [" A2 L5 W& b- Z6 K2 `

5 r. }1 C1 ^6 \1 hset global-reputation-list []

0 y# b) d6 N+ F$ l. H( A- \9 m, Z+ U, [* g1 e
set credibility-list n-values people [0.5]
9 j1 P0 O1 P8 f3 Q8 t9 s& I: v

- `/ {* h8 {: u- S' Cset honest-service 0

- l. v7 {: I+ U9 ]- J
5 F8 b4 u, U! C/ |: ^set unhonest-service 0

5 Y8 K, u8 _! \4 C$ \% C9 c5 o: V9 H
. ?8 X: X' g% r/ w" C/ Vset oscillation 0
9 W; n8 ~. X, X7 f- S

& |4 J7 [" X2 ^set rand-dynamic 0
6 K) t& x' C( u  Q. i) D1 A
end: g/ y1 N" I0 s9 b% H
2 ?- N: [# P$ C! X; l
to setup-turtles - E; _4 r2 v' Z. g- k% \& u0 N; h
set shape "person"
2 h7 G, l7 T3 s/ N/ Ksetxy random-xcor random-ycor
. c9 p( M/ x! r5 K1 o5 T( K# [set trade-record-one []3 Q* E! I. r, t
3 V& s" `. V3 b
set trade-record-all n-values people [(list (? + 1) 0 0)]
; q* }3 m+ }1 V" g( j/ Z

/ x: Q+ c' V) E& s+ Jset trade-record-current []5 p% P$ b! ^7 K4 j! S. `7 z
set credibility-receive []
4 @( T& j" `- X, V* ~set local-reputation 0.5
9 T5 L- S4 j0 T# k& `set neighbor-total 0
/ h( v# M8 ^; Z3 g7 Eset trade-times-total 0
5 w! a1 K/ W/ B. F9 rset trade-money-total 0
2 E1 h2 G) O- n# xset customer nobody3 u  G0 d% l, S# C6 t" }
set credibility-all n-values people [creat-credibility]
4 B2 ?5 B0 O8 z4 A) lset credibility n-values people [-1]" G" D, y) E; Y, B, p" [6 V
get-color' w7 M1 b2 f. n# y4 k+ h* n

0 F, `: P8 t$ a- G; |$ rend9 Z4 _: K3 l) G0 x8 y8 ]

) Z% g1 c/ ^5 c- h) R5 A/ mto-report creat-credibility) s) n% P* q& G+ F+ K0 y
report n-values people [0.5]
" N  t( u/ f/ E. h& s0 Eend
7 }6 h/ T! H+ b9 c& e- j; h5 m, N2 w+ i5 W3 D, e
to setup-plots
$ e, J& S- m  l/ w# z, U
- m6 j8 f6 q3 h) _. Vset xmax 30

& V9 r* A; p/ p% l
) X, K) H( q$ d& s3 }' H2 Wset ymax 1.0

) O( |. @+ ~8 @3 {9 i% ]% v4 g0 \
2 D- i' P, T% o3 i- B5 |0 hclear-all-plots

' [' m* X' e7 X) u* N' I" X& m; ?6 Y6 p0 i+ O) z
setup-plot1

! k/ z2 h0 P# G6 ?. |2 E
; V+ y  [/ z5 I5 u, y/ _( s+ Dsetup-plot2
5 w% F& v- A: R9 y! M
2 H. L. E! f5 Y! Y) \
setup-plot3

3 ^1 q: Q+ H. e$ z, Lend
' C1 C! [, c& A6 X. u$ b& a" r- g+ h8 D7 p
;;run time procedures
- Z9 ]8 ?" y1 h9 X0 W/ w5 _
8 i1 U5 w( b  }1 v8 d' ~4 \to go& N5 B5 C& a% X3 }3 v2 J% y' N
$ L6 ^9 Y6 }% Q( ~2 I* V
ask turtles [do-business]

# u" K5 G! ^3 Bend
! C: P$ M% k$ T1 d- z$ A* h3 E' w, {- b2 u3 Q. R; H
to do-business
# M! W. P7 d; G" w& G

1 w# b$ O7 W( s4 C' b& ^- v# Y# c1 Q) d- O3 A* ?
rt random 360
7 Y. S! h& C7 n% N# H( t2 f
) R5 P! A# u9 l2 ?$ C2 A" U
fd 1

4 N3 U* `8 R9 t! j( o. ?8 A
& J- k; r$ M* E5 Rifelse(other turtles-here != nobody)[
9 E& ^9 s: n: C! h* k/ e0 I
/ t! ~& g" }) h( l9 B6 V9 B
set customer one-of other turtles-here

" P" b: c: J  z# k- y9 W( Z3 k+ |% Q8 K
;; set [customer] of customer myself
" T- m1 C/ D; K+ t, w2 P. Q

* u( `, N6 V: _9 g/ }3 B1 [set [trade-record-one] of self item (([who] of customer) - 1)4 _; |: W- K# j$ E& J5 S6 g9 l; f
[trade-record-all]of self+ U( y: q. z4 _9 j  t
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  L+ N! n& J$ X4 S# E9 n
# I4 m$ U4 w2 V& T- S. A" hset [trade-record-one] of customer item (([who] of self) - 1)
4 `/ c% t& h& E; O( u4 C, H4 w[trade-record-all]of customer
: f: g; I$ }9 l. B+ S

6 ^$ M5 V! E9 b* t, B; Dset [trade-record-one-len] of self length [trade-record-one] of self
0 y6 t2 |# c. y3 U+ P1 D

* H9 ^0 r: o5 z& {6 Q; ~set trade-record-current( list (timer) (random money-upper-limit))
( H7 w) W& W# _2 ^. W
8 o6 ?4 r4 y+ G  U% I, Y# S
ask self [do-trust]
4 h. E2 h+ Z. v" Z, x% a;;
先求ij的信任度6 J! r9 k" X9 E  i5 p

* E% y" K1 {) R4 S/ A2 P1 Qif ([trust-ok] of self)3 c! x/ x$ g( @6 u
;;
根据ij的信任度来决定是否与j进行交易[% ?( |9 s0 f: M% l) W* ~
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- Y+ c  h* V4 B& x% P# h; k

- G1 q, f% Y' f* a/ Y) _[

$ P3 {5 I/ i4 @8 n; \7 R
2 E* `* u& C' U  \2 y: s3 e2 G! Ydo-trade
2 c0 j; [6 H: v( r5 O$ z

# x- E& W9 s0 o; q! Cupdate-credibility-ijl
; M! l- L5 J( D3 b5 T7 ~5 o% u  i
% A6 z/ N! A9 e$ X- W$ I
update-credibility-list- ]! @" t7 l) e6 @* o

& i) H. c7 ^* L9 R$ j/ x9 M. k2 g% c1 ]3 `2 W( X
update-global-reputation-list

& z$ G) v  s; b& t
( T- k' j* e, P: |, Kpoll-class
3 Y) }  |! [  ]- W

: S( }  s- I5 l; b8 k% mget-color

2 `4 U& p) k9 R# M
1 ]5 W" x% X! E* ~]]
/ d2 z, L$ r7 G( J0 `+ W* F& I& Z( A  X+ M: d
;;
如果所得的信任度满足条件,则进行交易
* d, z0 v2 ?. a- {
9 p7 \: p- |- x& F$ {/ Q[
; k% N+ O5 K. c  G- i8 c2 y) e

8 u5 X; r+ |' b6 c- y- rrt random 360
7 n% \, ~! s$ u1 G& K. _# U

! c+ ]+ Z# o7 o# v8 qfd 1

" V. U1 \% d$ q- S' _7 g* b* V, s* j6 F" k. |- \9 U& l
]

2 u( i6 \" Y) b+ a% Y4 z3 K+ ?9 [: X
end
' [  H9 ]9 a  P" m" U
: S3 x$ d" K0 a, X- O' q& w: U: w
to do-trust 0 a7 a" ^; k2 \! U+ g7 z
set trust-ok False* N" R. L. u' S$ P9 l$ _( ~0 a

/ J9 m. O- s4 H9 L' x  o* A

* H! }' D: I/ v6 D2 Glet max-trade-times 07 w- X: Q7 `' T& `) c) _$ H
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 L9 K( H2 }! k4 I
let max-trade-money 0
  p0 ?: E0 A8 ?: Cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: h3 F' w/ r. i5 w9 z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 ~4 Z3 h# e. S- b1 q
9 O' P/ q2 g2 C5 O
' u9 H: i3 [2 p6 L0 f) o
get-global-proportion# H3 V+ o4 i) J4 w7 \# C0 G1 B* }; b2 d$ A
let trust-value) H' L/ H8 r# H& z6 P8 H4 w
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
4 b% p+ J' W$ s3 N4 Z) R  b
if(trust-value > trade-trust-value)
2 Q9 @1 |3 P2 b0 `[set trust-ok true]' O+ ]6 X8 P% L9 }( l3 s
end
3 i+ h8 U$ {/ |! A+ [6 t; ~% e4 L) `6 h" S+ g# K7 g
to get-global-proportion  y* [2 F) W' d' E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: }( |: p+ l' V% s5 r7 z% L[set global-proportion 0]
: Z5 k* H, g# o* @. A% |% m6 w[let i 0( X( I7 f/ v: U9 d
let sum-money 0  w- W% B" n# i$ w
while[ i < people]% G: \% w4 t& n, |) W* E
[
: w" b2 [* |0 @  f6 U# [$ s( rif( length (item i# N) h( Y2 x, N" |( \
[trade-record-all] of customer) > 3 )

, q$ I7 c5 I! N# {7 i9 T3 F: h[
6 u! l2 ?. Y& x3 k0 Q8 u0 {set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ O: y! X4 T$ X]
/ i0 [" M* r) M# w6 `0 l]
8 S- p2 Z6 V9 H5 tlet j 0
, m& y) k9 }0 z# q/ ulet note 08 k/ W" H% G4 {
while[ j < people]' Q9 r! V% W& B1 N
[
7 n3 `! ?! p; f! j+ M* eif( length (item i
& }3 P* d4 O2 |5 D/ E3 g; y( P0 O& M[trade-record-all] of customer) > 3 )
, A* J* h1 ]% s# m3 v
[
$ R) _7 B: a0 |" F5 ]1 S0 ]9 Zifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) k6 s9 U* n% U$ \[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
+ E. y/ y8 x" Y* G$ D; Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 r1 v, V- y3 h- r# ~# @' ^, G! {]5 w$ Y: [- ~- ]4 z* }, z
]
# `! Q2 I/ f  T( g" I5 I" M8 _set global-proportion note
$ ~' Q) ?& \9 t0 u$ S]3 j! m% q* a2 r
end' ?4 R2 M* Y6 I
2 ~8 I5 }3 F' A8 [
to do-trade/ R. `0 I: I: N$ ]; Q3 W
;;
这个过程实际上是给双方作出评价的过程& U5 U/ h2 Y+ _" m' G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 l2 S: }. @$ D( ?( a4 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% B/ O; y+ D8 w* ~- l4 Z1 f3 O
set trade-record-current lput(timer) trade-record-current
6 |5 i0 `. s3 d;;
评价时间
! L1 k0 b) q: o& [! Z4 s; ?ask myself [8 I) t. ]& [9 P
update-local-reputation
+ t7 ~- ~* ~- M7 i/ F6 {set trade-record-current lput([local-reputation] of myself) trade-record-current. V! x" p+ D8 g3 L
]7 P+ S% {4 P( \+ i$ G# \
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* m8 W* L0 u7 r# D: o
;;
将此次交易的记录加入到trade-record-one
; V# `# Y& o/ W+ L" Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* r+ I, @! X- a; u( f3 H
let note (item 2 trade-record-current )
- A8 _4 C4 Y8 d( a; {set trade-record-current9 T( ^& X5 B% f
(replace-item 2 trade-record-current (item 3 trade-record-current))

' U/ t# {. [# s2 kset trade-record-current3 N* I3 l8 v4 I- ?/ M. o$ c, [
(replace-item 3 trade-record-current note)
* W6 N4 g5 J7 K9 c$ Q. M8 s2 |& {' g& p  ^
$ K0 U, m8 a4 Y; K
ask customer [$ y1 e( ?: f  c- o3 T0 k
update-local-reputation
. F, g( _7 M& P' bset trade-record-current! Y% O  L5 B0 Q0 }/ |+ J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 Z: q+ K( e& U, j& L4 W
]
3 I# G% S# m& l* q2 c
; Z$ c4 r, f2 g- b1 s. p

7 T1 x3 F/ A2 q# d, @+ ?' [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 C! E8 g9 v' k/ u( `1 y, {' Y* j3 P
8 W) c9 z8 K6 p6 y& Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  c1 m; t+ \, L- ^7 E
;;
将此次交易的记录加入到customertrade-record-all
  O8 \* |* t1 L; T' B2 s6 bend: j+ [! |- h. q8 x: d4 i
0 v7 A2 [" x' |5 j) I
to update-local-reputation: ~  ?8 r- V5 |$ g9 Q. {
set [trade-record-one-len] of myself length [trade-record-one] of myself+ n, {5 e$ E: q/ y/ `% _
+ ?, c+ k* b, z  a2 i. K
( C+ E- r6 c# P* G9 E- J
;;if [trade-record-one-len] of myself > 3
$ ^# C/ V9 h1 z/ E" z1 p; L
update-neighbor-total
- [% S) U9 f$ w4 j( Y, p7 j;;
更新邻居节点的数目,在此进行: U) X$ n6 @9 E% h0 }
let i 3" h# y  S  T, F* w' h* {" n
let sum-time 07 w' f% v8 ~0 y+ p# s
while[i < [trade-record-one-len] of myself]3 s  p% |3 F( h0 T$ @
[( a: K6 b/ Y/ N$ ?) Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
: [1 [/ N' m3 n- P- Aset i, z2 p. p( K3 T, Y$ K/ Q1 k
( i + 1)

: x+ a0 W% L; I/ f$ {3 f]/ T& m7 T# F) k  l& f
let j 3
( G' s4 V4 K% y. G5 j' Hlet sum-money 06 }1 i$ s* r; p; t+ o7 r
while[j < [trade-record-one-len] of myself]
: \/ q0 d% H: l' _. T, o# i[9 }2 p+ b6 M1 f7 E! ~0 ~
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)4 T* X4 [' f- Q
set j( K" N( L  A5 @3 w3 ?. F- p! U
( j + 1)
8 A  [+ _& ~) o0 I' e0 |$ }
]  j$ X' n$ v' i! P* f
let k 3$ C# |' k4 K0 o" M! c
let power 0" e3 Y3 @$ t4 C5 y
let local 0
& i" u& J8 J# {while [k <[trade-record-one-len] of myself]
$ U$ ~* Z' J8 k% l6 }[
3 h, e; _& ?7 n, w3 V& ^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) , l: F$ o& H0 r% ]3 s3 M4 g
set k (k + 1)
; z9 q6 T; D6 U5 J]6 [" M* q* i6 f* X- |$ I! s8 f
set [local-reputation] of myself (local)
5 \3 b' U" M9 xend
$ _# ]7 V+ `9 L5 [1 s& |+ V8 N3 v; |1 x( ~
to update-neighbor-total
2 `$ S* g3 y" e+ w. x' h" a/ Y! x: e$ _  S7 l1 k% X
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# O" n+ j) W: ~' A" S& Z7 g& K
9 U5 n& e5 f1 G/ P7 M% x  W

& |0 ^! N. J# S# {end
2 U; I5 W3 Y9 j! l& A( D) F& R( S2 U/ P8 V! \' O
to update-credibility-ijl
7 }, H, z7 u! ]* c8 Z4 c& X
' h$ H2 A1 j7 d. s;;
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。
; ]# Q/ o/ q' y" C5 Rlet l 0
: E: O/ b6 Z& lwhile[ l < people ]  i4 R! i. X- x- l: i0 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: f& L) K$ x! q, X: B
[
- B; a, c& a0 o+ P: V9 |9 p2 i3 M  c/ ]2 _let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
7 |" ~4 I+ _& [$ z( Iif (trade-record-one-j-l-len > 3)
2 W5 e4 E$ [0 @6 D% I0 e7 ~, 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-one" X0 B; y6 T4 s- U+ Z
let i 3
( |' i2 Q2 d+ B: _5 ]( ilet sum-time 0% p& g* o9 j' q1 P' l
while[i < trade-record-one-len]
( H: r/ w8 F& Q  b1 d+ k[* g, j1 k% H# U% e% A& a
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- J' ^/ A+ t' I5 m, }$ [
set i
2 E7 z: @6 Q1 [: n, q/ P# Q( i + 1)
6 n+ V9 A' C- h) M
]6 b' P$ R7 a! E1 |$ s' T  z& {" ?- q
let credibility-i-j-l 0
$ }% n' ^. H# t1 p& L3 _;;i
评价(jjl的评价)
4 V: J; @* [& Y+ ~3 b: zlet j 3
2 d8 x- ]" {7 L) [; s6 wlet k 4$ S: d  X8 n+ s% z' M
while[j < trade-record-one-len]" B5 X% [8 e2 }
[2 R  z& y9 X2 ?7 b' s  v# u
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
7 n$ T8 |& r3 q; k: ^' lset 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/ y7 q5 u; O" o1 e( i! s& |) i( V# e
set j6 _" K$ Q% M- p3 H# Q1 }  b
( j + 1)
+ \1 J* ^1 y8 H$ y" ]: y6 |
]% H5 ?6 [! ~( w  `7 d1 F5 Q
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 ))& K+ O4 x1 E% g9 U

4 {' }5 A3 \0 u  v: ^9 U) Z
# V, ]5 L+ K0 |' {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: d: D4 @; H5 M$ T8 t  y9 \;;
及时更新il的评价质量的评价
) Y6 I/ f3 ?, u4 v$ W+ rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% w( H( d3 P! \8 D" P* x' n* m4 J
set l (l + 1)4 n! T9 S( s" }. E* V7 S/ ?* N
]& k8 x; o4 d) D: w& I
end5 f7 K3 `. T" O, D. @$ y
- P. r  w1 @9 _3 l: P* Q
to update-credibility-list  E+ l" q. g1 ~" @$ r
let i 05 T; m( y& ~7 n' C: V9 _$ S
while[i < people]
' B/ x2 d  y* c[
# g" b3 \0 I+ k5 k8 z" `let j 08 i3 g& X! a% v  V; a
let note 03 u7 ^. h5 w: S! U5 a
let k 0
6 o& I1 F1 Z, I* F% y;;
计作出过评价的邻居节点的数目
/ }# t2 f0 f0 G7 ?while[j < people]" y  e/ ?7 M( i
[. G& Q" Y' D0 N9 \* Y+ s  e
if (item j( [credibility] of turtle (i + 1)) != -1)
' X% {9 H. e* T+ W( p6 T" a8 ^9 d+ l;;
判断是否给本turtle的评价质量做出过评价的节点% \! B& }/ ^" [: R! w. J( j
[set note (note + item j ([credibility]of turtle (i + 1)))
$ s7 \' C/ X* d3 q# {1 `" L, O4 p;;*(exp (-(people - 2)))/(people - 2))]
5 Q8 V8 J+ }& D; ?" m
set k (k + 1)
# u8 n+ l& m/ u( T' _5 A' ^: Z]0 w) _, {- f+ k+ P
set j (j + 1)
, m& ?& Y5 o, m4 \. l& s  v  }; X]: O  _8 n; f  U' P# u" y
set note (note *(exp (- (1 / k)))/ k), g0 @, p# c, d+ s" `
set credibility-list (replace-item i credibility-list note)
' H% ]6 ~& y3 t4 @7 rset i (i + 1)' @( V  v; M  ~; I. F
]
) l) k' H+ X' i3 M. Cend9 O" R2 V4 T" x5 B5 D
6 r1 B8 X, z% q$ N- k% G3 y
to update-global-reputation-list
. y  a3 h4 o/ v( w9 @. {let j 0
+ x5 Q/ E* W! {% B. Jwhile[j < people]
3 j: e( V. ~, {  y0 Y  D' {[
2 ]& x; |5 B8 ^& i' b- Ilet new 0
! F$ O/ G8 q$ \5 Y;;
暂存新的一个全局声誉
2 B) n* w4 M  @. H2 Y: A) f8 Ilet i 02 v: s: B1 V( f
let sum-money 0+ H1 K4 f) ?  C2 t5 ~* r
let credibility-money 0
5 A* o* O4 q5 {1 C( iwhile [i < people]
% P- Q+ Z; Y+ d" M; V1 x- Q( ][
/ m% h) S$ s' c2 I7 h4 O/ {# O$ nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, G4 @4 m8 _. N/ Cset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 n. x" d. }! X  Z" j# V
set i (i + 1)4 r$ _% y5 W. ~& h# g' X* T
]" c' |% a- s* P
let k 01 u' q% T+ `) E; [* Q+ b0 U8 Q
let new1 0' o8 r5 e; O! G7 q8 r" x$ d, b
while [k < people]& \6 a& b; o+ e( s3 Q* `
[
. [, |7 X, f* B! M/ U& ^set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money), ]7 ^6 B+ A9 S
set k (k + 1)1 s7 h7 j# j  \4 W$ v; v' i3 t
]; y5 K; L' k. k/ e
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . S9 i; m) o+ R2 G3 f: v# ^% `
set global-reputation-list (replace-item j global-reputation-list new)! W( c, o/ O2 h' m" g
set j (j + 1)
. Y  R( A$ H' g. N$ S! h2 w]
4 E5 u: D9 x0 Qend
" [: T2 G1 ]' x( u- j5 T
' k& x. }1 n9 p$ |4 Z( V9 e, o1 ~+ W" L$ U7 I$ y% D- u6 V. H' a# F* k

2 H8 T. o$ c$ n8 X+ Rto get-color
# ?5 i8 ^6 @- e/ b7 [: ^4 c+ W# I9 C2 }* U
set color blue
# I7 c7 }; I0 \( h6 G* S
end. s& I' Z; o2 F/ l$ \- B
2 A, K. m- n/ O' t- o+ B5 X, C
to poll-class
. o6 S1 H. L1 [5 E& ]. D2 L* G3 `0 Fend
2 o; r& W4 i* J4 A" ]. G2 \0 P- r" W  @7 Z
to setup-plot19 q/ O& a# C( v1 S( v4 m
& K+ Z( D; o7 p! T$ M, w, f
set-current-plot "Trends-of-Local-reputation"

) t; a" _7 u; V. c, R+ s4 x- J5 ]- m+ h! ]+ A8 S
set-plot-x-range 0 xmax
; {8 k( G: D1 {$ Y

" m: u/ t( z9 E# q) b5 V; Aset-plot-y-range 0.0 ymax

8 \0 p- a- r7 k0 z+ s0 `( \3 B5 mend" @6 \4 N1 K, w1 n* [
9 u/ H) ?" K9 ], ~9 x2 A- R4 g4 V
to setup-plot24 {) O6 m9 Z+ u* B

# k% N* K9 f+ S4 Uset-current-plot "Trends-of-global-reputation"
& ^1 W2 e$ x" s* `8 ?/ z  I, p# @
. D' @* K$ v  d& h* y
set-plot-x-range 0 xmax
4 U. M% D3 X7 R& ]) L' l
( [9 `+ T9 c1 P% f3 j$ Q* {; l+ r
set-plot-y-range 0.0 ymax

/ I. L% r" P8 Mend
0 d) R) M3 I1 h* f% ?# U4 ~8 ~
" e# h, E9 h% Gto setup-plot3& j$ a( O+ ?& a+ Q1 A' |

0 i2 v( W1 V0 x/ U" gset-current-plot "Trends-of-credibility"
' u; c9 \6 n! h4 N' H
& \, W5 P" ^& @2 G
set-plot-x-range 0 xmax
$ O0 J& {, U, S4 V* P/ W7 z

% |' k! E1 w1 u: V) M& Tset-plot-y-range 0.0 ymax

) S3 Q/ A! [- H; @1 nend; O0 _/ f4 A' f' l+ _  N% ~" E

, p7 z. y" C' g. a4 L3 Bto do-plots
" Q3 [6 y" Y4 B" A( [set-current-plot "Trends-of-Local-reputation"
0 }' a4 }& k$ Rset-current-plot-pen "Honest service"
, G8 T- k3 m% s$ R' F* E3 bend
3 J1 M5 ?4 T# G
" h  g% [" F) f0 N! i0 _[ 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.
- r  c' t, v& B) a) B! l6 K( h
: Q+ S" i& |  g) S# K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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