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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 I+ w: x! G) W  k' Xto do-business
% Y: v4 z& Y" r$ T rt random 3603 i+ {, U$ b! w& A% S3 `
fd 10 V- M. G. ~, E) x" e) n; }
ifelse(other turtles-here != nobody)[/ C4 s* A" d! z# B7 H4 ?! b
   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.3 Z& F" S6 {8 ^4 \  r- X4 B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 f! P. S; g5 {5 e) Y4 n3 U/ d
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 ~6 o* L- o2 ?0 V' O
   set [trade-record-one-len] of self length [trade-record-one] of self
# H0 U9 X! w. V/ N   set trade-record-current( list (timer) (random money-upper-limit)); L5 D" _) y7 U# C* d% A
6 m: C. Q9 _: Y& U8 S
问题的提示如下:
0 W. h! g7 {) F4 G; R  j( _, [
& h# p. i+ M* Lerror while turtle 50 running OF in procedure DO-BUSINESS
( q' t; l9 P1 G* s* [! o  called by procedure GO
" i+ U, N8 R! U3 `) BOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( E" n) |$ N! o; z: ^
(halted running of go)
9 T% Y9 x( h& w% e( R& ~
" G( E  ~7 V  {: G- y2 A1 T9 b& 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~~
2 P( B! X# i6 M. s& {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& c5 f8 V( K5 C: _1 s
globals[
: A. B4 J; b! T- A7 Cxmax( d; b- `0 @+ D
ymax
! _) s6 L1 t( W3 L: l. |8 Zglobal-reputation-list
0 q# J* o; P" u. x: L5 B+ K6 Z4 u- C& o' I6 z
;;
每一个turtle的全局声誉都存在此LIST
8 q8 U3 m  M0 A1 ]  Y, k0 w& ocredibility-list
0 j% U5 i0 P& @- w- Y;;
每一个turtle的评价可信度
  d$ k9 {& H" K8 \6 q9 R. V( Mhonest-service/ v  W8 n" @7 T( m2 c2 h' F
unhonest-service: n, ?5 H5 t% U
oscillation
1 O: o/ Y4 I- L, S3 nrand-dynamic( E, t2 o2 S) \3 F! U: t
]8 \" T8 r) }9 d0 {1 K+ \9 F$ _

9 ?  Q4 f; ~7 L& A5 B$ [0 ~0 cturtles-own[3 C9 y( D) S' a+ a6 D  h1 o" W
trade-record-all$ O; x6 Z- ?9 s: q9 l5 u% Z# C% |
;;a list of lists,
trade-record-one组成
8 K9 S* P- L: Q; }4 r2 X5 htrade-record-one! g8 a9 U. }3 A; O& 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; B$ z; s* ]! Z' Y6 N5 R, i

; Z: X. X! `; {6 n8 b' ^;;[
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]]! ]' C2 a5 U' E, z+ G2 j
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]
& W; R0 A2 u: }' n! y3 x5 z$ vcredibility-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
  p  f5 V" f7 I( |+ n$ ineighbor-total
. y& }5 c# ]( L, q. ]9 F;;
记录该turtle的邻居节点的数目4 [1 r3 l' G% `5 E8 J8 n
trade-time( X. ^; r  C4 D
;;
当前发生交易的turtle的交易时间
" O, Q% i  q3 t4 v  X4 uappraise-give, s' ~( M5 `7 X! l5 n' y
;;
当前发生交易时给出的评价
* t" o; D& N$ v( A' Cappraise-receive
, a$ X. R1 B4 \;;
当前发生交易时收到的评价) J- Z# T8 b& l" _5 L
appraise-time: m# ?7 ?4 e2 }/ N
;;
当前发生交易时的评价时间# c8 C1 h. o6 c) _4 C4 n- H
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 s/ P& v, t' F: M2 Ftrade-times-total
7 I' {* [) W# ^: X2 c$ b- x+ J;;
与当前turtle的交易总次数( a! w! h" d) `. i0 e
trade-money-total9 q2 s8 B' F. t( s9 b- H4 ~
;;
与当前turtle的交易总金额* _$ g- ^0 Z0 p$ O3 b
local-reputation. c3 N% |+ M/ j2 w' v
global-reputation/ ^8 [- V* H! J- _" Y
credibility
. d( f9 B" B5 a8 O! k) h;;
评价可信度,每次交易后都需要更新4 r2 }$ X' l9 l8 h- N3 U9 m- I8 C/ T
credibility-all- @( E0 Q0 o$ ^! }9 [5 M9 g5 D
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据0 `5 j5 M( O) `- W: r; K" T7 t8 c+ P7 \
1 G! t0 F4 y( D
;;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0.55 l  A% b' R: S& ?7 J3 c! S
credibility-one
1 L2 N7 R2 r; U$ C7 P, o0 L;;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
5 i: l. N8 v7 ]& hglobal-proportion
$ n. a# p- y1 U; i4 icustomer
$ F7 A! r# \' w0 tcustomer-no
/ v, W4 h5 R/ g$ |0 M( Y1 N! Qtrust-ok) s/ L, `. T& ~  Y
trade-record-one-len;;trade-record-one的长度
2 y; z2 d( Q0 I/ s( b]
; t0 o; c7 P! O& N3 z4 P' H7 M% _: c1 q$ c8 Q! v
;;setup procedure  L5 u0 S8 }; A% ]1 Q$ u

1 t$ Q* |8 L. S9 O! n- [6 u2 c; Wto setup! a( p* z8 ^2 i
  j, x- b3 o) o( K4 M. {  m+ V6 }
ca
" Q: D/ |! S5 U

& \# v( k! x2 X$ I5 pinitialize-settings

) c$ I* o: n+ P: @) F; P5 A( C2 A. i5 P7 y9 X% }7 W
crt people [setup-turtles]
; R7 D' }* X+ A- }" W9 K

% W4 I4 s) k' E0 n  breset-timer

2 K8 t/ {% P7 J7 Z0 f6 P- E2 O9 `4 `; N  l) z8 Q1 J
poll-class

7 U- S0 W2 ^/ ~- V5 a, w! W6 i, m+ k( R- Q
setup-plots
! [3 O% z6 m- J% K  q3 d1 ^
+ ~, o0 i* c- g8 |$ V0 Z
do-plots

) `7 h2 v; ^5 Pend5 D$ H: S& l  n1 m3 I% a2 |3 M0 W3 |3 N
4 I; N2 D" z- i6 R% I+ k; I6 X
to initialize-settings! X/ {. [! t1 p; {7 t

1 i4 ^- R# M2 N5 D  ]% ^set global-reputation-list []

& M+ x" a: m. ~( p( F# J1 u+ Z6 Y4 u) N+ {0 E
set credibility-list n-values people [0.5]

6 u: B( x; Y5 `$ E" r" `! z3 m: M9 t9 U7 P0 R% k- }: C' E  i
set honest-service 0

8 p# g0 @2 m6 t3 |( e, R1 G0 }( V
5 e0 p5 t2 \$ z6 Wset unhonest-service 0
; _4 V; R$ [. d/ n& K% y7 G
! G6 L' h9 Y/ \( A
set oscillation 0

* t+ |# U( g3 U3 l: O
* g+ l& J% v8 X/ T" Wset rand-dynamic 0
& z( u" F6 h7 S: Y! ?0 ~
end
2 ?' B3 p' n* X! V# x* l6 e' K+ Z. M/ T9 x9 E
to setup-turtles
3 B) k* x2 `! a1 n& `! Eset shape "person"$ W4 z; C1 x  K5 [5 b3 d! G1 |
setxy random-xcor random-ycor4 J2 @8 s* V" ^- f3 i2 r! ^  [
set trade-record-one []; s# @7 `" m/ B2 X: K; o& b8 v
- r2 s  y3 A0 c# X- }6 T* @
set trade-record-all n-values people [(list (? + 1) 0 0)]
$ A! y. q  u! d
3 v0 H8 V8 m+ [7 A
set trade-record-current []+ `! P  R* K, W1 C0 {# O& A3 |7 T
set credibility-receive []
8 X$ j. @, x$ M+ t# \, q& nset local-reputation 0.5
$ v! _4 E" h% C+ G" [9 Bset neighbor-total 0- q# u. `' O9 w( M- M
set trade-times-total 0
  t  ]5 B1 ~8 h( ]4 t% x% I! k, D! [set trade-money-total 08 f9 o" ~5 j! m. G4 H% q0 j
set customer nobody7 S' O9 D8 k" M1 ]
set credibility-all n-values people [creat-credibility]
; s  j) w2 m2 n% {# jset credibility n-values people [-1], \# B; H  b' L/ Z! W
get-color
- q3 M& r+ z' b8 _9 z- M9 l

5 ?3 h0 [& f  Y+ _9 uend1 y1 N* @$ K" _/ J

  @6 m0 f& Q" u. `to-report creat-credibility( a! h, k5 y1 ?9 u
report n-values people [0.5]
# S( D* l$ w- x! I! h1 u0 i+ c* tend5 I! y, P5 v) d! ~0 c

& X. |# ]* F( D  ^( p' Zto setup-plots
  ^* O8 O! ]/ w4 u' W8 G4 K
4 S4 u& D: P( H( Tset xmax 30

- @2 r! X9 T: v8 g2 n6 t7 C0 R& Q  Q0 w1 E4 Y: _+ m, d
set ymax 1.0
$ X9 s. r5 v" ~/ J# L0 `
( O7 v, w' H; [. z; {/ V: o
clear-all-plots

/ z5 I8 s4 c9 x5 u2 P6 h! f' ]3 |) G# s. n1 x3 [
setup-plot1

3 Q( S- `2 s3 h5 A' ~- f
' P7 i' o# }0 y: x6 t5 i6 \setup-plot2

/ k: b9 ?6 a+ r7 P- J9 U! z
6 L2 D  J1 I/ W7 P$ U, Q/ _8 Dsetup-plot3

) a. J4 b- J; {' v9 b- Y# ~' S6 cend
) O7 T) f2 c) c
; O' F2 u$ l, w8 b6 y; S3 i;;run time procedures: [3 e. I5 V; N6 J

- f2 ?- |- q  ~5 E; Y5 A# wto go
6 k, d; Z, O" A
( k/ A) k( {: d' \! [& [0 i1 |, O3 Q; hask turtles [do-business]
9 ~/ ~( i2 N/ N
end0 ^2 y, H# ?( v; t. z

6 ?4 d+ i1 e6 T7 I1 s+ ~/ ~to do-business
; M  F: R( V! f
5 @, J; y& h/ A  c

) u  V" ^5 {# f" ]8 zrt random 360
  M. z% t, n; M# M! A. e
% X( F! I3 H( ~% z& i+ |) ^2 A$ h
fd 1
6 ?9 `# V; G: A7 ^' N# X( o& y% f4 a

9 \, G: a% o+ m7 q. eifelse(other turtles-here != nobody)[

- W) {' r9 l6 I- A! R5 q  m% n. M. S- y/ k) D
set customer one-of other turtles-here
9 S: \7 f" p& \1 |6 u% T$ |' c- V
* N! N. w# s3 c/ H* y5 ?
;; set [customer] of customer myself

* b% m  I$ T2 \* ~) ]+ w; `% `" r" O8 V: R( ^- E) {2 r4 m3 x0 F
set [trade-record-one] of self item (([who] of customer) - 1)
! z) d8 ^$ v! n3 T/ e+ r[trade-record-all]of self
1 l7 n; Z* V% P( r;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( s7 _* p3 p: [0 `4 {$ F. _( F
6 m& `! L3 P' @! e7 I$ kset [trade-record-one] of customer item (([who] of self) - 1). x5 V8 S8 |* n# H
[trade-record-all]of customer
6 T+ E) q, |: X

# h1 J( Z0 P" K4 tset [trade-record-one-len] of self length [trade-record-one] of self
5 S) _( y5 s- g7 O# @5 i$ S  j
7 P  o( g/ Q( o, H
set trade-record-current( list (timer) (random money-upper-limit))
$ o. @0 e6 D1 Y5 q& R- {) G

0 O+ T! t  l; ^9 }# q* {ask self [do-trust]
/ w' c, X5 F! C; r% T;;
先求ij的信任度
0 Y) s6 m  a  ~/ g4 V; ~
0 Y4 h( v: B2 i( dif ([trust-ok] of self)
3 d& B- d) s0 b4 w;;
根据ij的信任度来决定是否与j进行交易[" _6 j1 j) D9 n1 n
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* I  t0 o* r5 s: j" T. q5 y

  R/ s+ Z9 H$ _2 ?[
1 N  p; E% Q2 G

( _3 _! O0 ]4 s% o6 Vdo-trade

6 O0 V0 E( @. m$ \: X- l0 |: [; N2 W- ~7 {1 S2 M
update-credibility-ijl

7 f) v. X" L# [) Z. l8 r* ]  n8 D. n' f' ]+ _+ C9 {
update-credibility-list8 p) r) x' t* f( t3 B" e

# u/ J% a, _2 x4 \  Q* {
% d2 ]! n2 j" h8 j0 V/ Vupdate-global-reputation-list

9 w. o: e4 e' e7 }* ]  e, y# _" b' `' J
poll-class

2 L% K; z1 i. b" Q# k( h% u
( g) s* O" }( e0 [0 }: [) Iget-color

1 ~6 h4 p4 _' h( K
6 F# x1 c" p# ~( ~]]- ^- e. G8 U- }$ v' e+ E
6 I* o, Z4 K. Q# l( x; e
;;
如果所得的信任度满足条件,则进行交易
( w& J) u9 b7 }6 ]
# E. I) N* y7 I0 C1 t; j[
3 R3 R! H- Q; ?1 W5 h
$ ^+ z9 r( R5 Z
rt random 360
& Y6 b* V! R- v8 y$ q7 }
* U. w  P8 ]8 {/ i% q
fd 1

3 X3 D4 T! ]$ n3 b+ g) m$ T4 Y) b7 \3 @( }
]

; [& W/ @) Y. C5 [6 L8 f" S; b3 I6 \# E9 w. H  u$ O
end
% E" F, O+ _: r0 i4 V) b! c

' @$ ]' d; f/ Q7 [to do-trust ' e# j" S4 @6 T, h
set trust-ok False  i  r8 a3 u5 L" a3 L
2 r4 q" [+ q! Q3 l( B

. f% j' V4 h6 ~0 ^let max-trade-times 0! G- i9 R- O6 k9 ^) F/ N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 a# ?4 L# Q0 N
let max-trade-money 0  @5 w2 n5 Z' d3 ]9 X% C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. e2 c5 }! S2 C% x% g' ]
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  @) c+ R% C# J6 a9 y
- L* j2 C/ g, S' V. L5 e: |: m
# P5 J$ H4 J/ N1 u1 U" h- H
get-global-proportion/ ]7 [; k: T+ ^# Y' C
let trust-value
9 o- h+ z# i3 b4 k1 Llocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" H/ x" r# P# _. W+ q7 A' k
if(trust-value > trade-trust-value)
) C% _+ J4 _0 _: e[set trust-ok true]: X2 i2 y& y/ ?
end9 n7 p# p% _: b
. j' t4 P* E. ~$ b, h! u
to get-global-proportion) H1 n1 O( F6 l- R4 F4 F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! a4 N+ [/ c4 n! M( y- |
[set global-proportion 0]
( }3 ^" N, I( @2 D' t, g' B: R[let i 0; _6 G. [& g; v! M( T
let sum-money 0
) F/ D$ U; l1 v2 Qwhile[ i < people]% i' k& N# N# ?6 @
[
5 }  A+ s# U! m, r5 D- \, Mif( length (item i- X- o7 H% F' ]" i
[trade-record-all] of customer) > 3 )

0 ?' ?- r3 V0 ?8 p7 P0 H[2 s! v4 a4 J% h; o( x) w, M* z7 ~, F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! I$ T( s/ j5 ~. f]
! d$ i, ?7 y  B- p# M]6 O3 i1 }8 u& _8 N
let j 0
" m  J6 w/ G% z9 olet note 0
. A) m) v9 s& g/ |7 Q8 y- G) xwhile[ j < people]1 ]* |, D8 L9 Q; g( c% H7 |
[8 D& `7 P7 ], n6 J9 q3 ]
if( length (item i
3 A' z* {$ T  q& }" }8 v% a[trade-record-all] of customer) > 3 )
6 |& R* X' d6 R* D$ R
[( h; ~: a/ [  I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" T8 m1 ]( R" w- w! y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  K4 {8 ]2 m( L0 n# R  ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 N3 C; D) }$ t0 a8 H8 P
]( U/ Q7 L. }, a3 }
]
/ l1 C3 z- E! _) Q6 s( eset global-proportion note
# N$ B) a/ }# M, p3 i$ c9 x]/ I& V2 u4 M3 K* Q. z
end+ _# L* b% f/ I* ^7 A

7 L4 V1 n% l4 Xto do-trade# v/ g& }: L3 k. Z! A$ N0 H
;;
这个过程实际上是给双方作出评价的过程& j  M- d% H$ ^9 I8 {$ L1 {) J; x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% B3 O- S# r" V, n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 s& _$ ^* l4 N6 }1 _set trade-record-current lput(timer) trade-record-current
' K  q0 F1 m9 G3 ~* @. e2 _" A* e;;
评价时间
/ G3 `! V" ~4 w# Z$ h, Cask myself [! Z4 M/ s" g( j
update-local-reputation/ y8 H; O7 o: ?/ F
set trade-record-current lput([local-reputation] of myself) trade-record-current# B2 m' r" d) K1 ?+ y
]$ Z7 D9 @$ Q" J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! ?1 M& C4 j3 S6 Y1 p7 e' W;;
将此次交易的记录加入到trade-record-one- H2 \% k/ T9 A! n& `- J" t
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  N# }4 k; F* Q9 Z" R; {4 Q/ y2 ]# P0 {
let note (item 2 trade-record-current )6 r( b! u' Y# t$ U- ~2 V
set trade-record-current* h4 P. C- m- T0 v3 b
(replace-item 2 trade-record-current (item 3 trade-record-current))
( D2 J6 x% p& m9 D! y
set trade-record-current
" h0 D  X6 u- `" I9 U) T(replace-item 3 trade-record-current note)
+ ?4 s) @; m$ L, q) M% i# t  N, V, C. s, c8 f+ T, |
" o* t5 d! z1 d  K& s. ~! X
ask customer [; C" ?8 G  a6 X+ b' C9 _
update-local-reputation. w6 a/ L+ B* @: ^4 _
set trade-record-current
/ W* ^5 M  K: D0 b! ]8 P# R(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( Q6 E! M- I9 k5 [. e9 [9 D
]3 _9 j' ~2 i0 B$ v. C

7 ^2 k* k0 X5 X3 v% E) x: R' l
$ ?4 M2 `2 @1 w# ]# @, Z3 r
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* G' s  s3 g) ]1 r! q
  m! v7 `5 B# M0 ~
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  n8 g* i: k. I;;
将此次交易的记录加入到customertrade-record-all" q$ `4 ]4 w( a7 t( D4 q
end9 J. i- R4 K9 E+ \/ V! I+ x2 p
8 {# O5 ^& L# _" s
to update-local-reputation
( A( f. N% [* {9 p9 W3 c$ }" Gset [trade-record-one-len] of myself length [trade-record-one] of myself
! x' l6 [; S6 L) g% Y7 r) d
( {1 w2 v. Y) G# o3 O9 L; `. z- {6 a7 Q! V8 L. V
;;if [trade-record-one-len] of myself > 3

+ t6 }5 m4 ?+ h  ^  H5 L; |  [- x) bupdate-neighbor-total- }5 q% J( v: V
;;
更新邻居节点的数目,在此进行( I! B8 j' H% t$ z( j! K
let i 3
6 E! }; Y1 p* J% Klet sum-time 02 u! c3 U' o2 N
while[i < [trade-record-one-len] of myself]
: h3 j6 b& G+ T. t[& q6 y( D) {0 I2 ]) Z# G( N6 w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 K/ n3 q9 ^, `& x& J$ p2 vset i
* x5 W! p( ]2 C( i + 1)

& i0 a: X# y% h' U8 c5 g]( t9 p/ G9 O. F8 F
let j 39 D& a3 i2 U: p  I; m8 c
let sum-money 0
# P3 b" [2 m6 B: [while[j < [trade-record-one-len] of myself]9 H4 v1 L& N3 ~, A& G3 p9 u2 e3 Q
[$ H5 G" |- L+ @: u6 v5 r
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)
2 x( A/ ^* k; o) h1 Hset j
; J2 A) z; r# B( j + 1)

6 v6 [" _: ^* M. q) R8 E]/ n! E- g0 m+ J# m% X" ^
let k 3
8 A, {- |- t1 y5 p5 Wlet power 04 p" [3 B, S7 S7 N
let local 03 W# G. P& ^- r) ^9 Y8 @
while [k <[trade-record-one-len] of myself]* a9 L: G6 v# g
[# \' P" f0 r1 {/ n6 U& f. k
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)
* K0 Z7 l- P1 h9 O) P9 kset k (k + 1)& n$ M/ l& R# T5 L! u3 o  X7 x
]4 ]  c- A& D% c  w. M9 \% T
set [local-reputation] of myself (local)( A! W- |+ L' N
end" w) f2 ~# p* ]( U: ]- [
& d/ k" ?; f3 c4 p( A' J& t
to update-neighbor-total# Z& ^9 K. ~9 P3 G3 p9 _

6 M7 q2 w) ]* L  a9 j' |1 L' {/ K$ t) rif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. ^/ A7 |, ^! p: S# z) ]( `7 D+ J+ T. o9 @) ^( C

, I0 O8 [1 G  T  z( {2 i! C  @end
% g/ k/ [9 @. S- e" A+ }6 M/ u3 G) a% f: A; k5 G- H
to update-credibility-ijl , X) g& _. b7 [
3 b. |9 @0 [9 s, m/ |
;;
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。! r3 ]5 B, v3 E" E3 O
let l 0
8 Y% {3 i1 G; ^+ {4 Cwhile[ l < people ]. D$ n3 \) 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
- l* R& D. A8 h( g[
, w% ^7 H. ^0 h* Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 c9 N( N  ~$ l1 `. N
if (trade-record-one-j-l-len > 3)& {; p5 U3 @1 A0 ?
[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- N* n3 P5 m! x0 X. u
let i 3
3 r3 |/ [6 f6 i0 H' b9 T4 }let sum-time 0
9 S, Q0 f, Y( cwhile[i < trade-record-one-len]
0 m8 {6 d0 a4 k7 s1 I[
3 ^# \$ Q( E! O4 mset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 |" ], O% u2 N0 Q" eset i8 D# H" y2 x% g' w8 @3 t5 d
( i + 1)
: y4 f# ~0 i: Z. F
]/ w: ?, @  a/ \
let credibility-i-j-l 0% f- v* T8 s6 T; i( o4 `
;;i
评价(jjl的评价)
* L9 r0 j# ^% J0 q9 p, g7 Dlet j 3/ |$ [- J' k( L/ }7 X
let k 4
1 w9 [& c  S9 U, L, R6 qwhile[j < trade-record-one-len]4 `3 E  x9 S0 w0 `
[
. W; W- ?$ B( _& Dwhile [((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
1 P: B) k. ^' A& A# b; Zset 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)
5 @- F  h7 P* o3 M; V  D6 eset j
& V6 N- j' M' j* H4 ?( j + 1)
4 C9 D5 u( K* K( n; u* m
]3 w( O1 l& d. W* T3 f- U% _5 x
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 ))
  K9 U7 ]7 L+ r" y! N! v( W$ v0 ~! f2 p
: ]; M& p& o: Z
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 G2 h4 s5 W2 @" @
;;
及时更新il的评价质量的评价: H8 \0 c8 P3 l. }% D+ b3 a
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& t- v$ ^& G7 M$ [% ^( w
set l (l + 1)5 [4 I" Q# x9 f! j- a& R% W
]
: G7 [- g9 b; l- Uend/ t- x* r6 c' h/ U$ {7 h

( l7 n$ F5 X  z9 R' J1 Lto update-credibility-list
. x8 o, P3 H( V, J0 \* Zlet i 0
; N/ |8 d+ l5 g8 Fwhile[i < people]
( R) u& g6 g4 Z; M/ W[  ^" K$ }: h7 p1 K
let j 05 y6 ]# m* e. {# f: S
let note 0
1 ?" h/ h% J& ?$ X3 Tlet k 0
/ [0 f1 M5 i! e* a;;
计作出过评价的邻居节点的数目* S8 {; F8 \( P8 i$ v4 Y  o+ p
while[j < people]9 t9 q" R  X6 u0 s) U, Q5 I
[$ q5 l" D+ `9 e0 V) x5 b# P& V# x
if (item j( [credibility] of turtle (i + 1)) != -1)3 S3 k/ q/ A/ L8 H: v
;;
判断是否给本turtle的评价质量做出过评价的节点/ T2 u2 C" _3 W" k0 ]
[set note (note + item j ([credibility]of turtle (i + 1)))
8 }& U8 l7 V4 q4 f! r/ _  j;;*(exp (-(people - 2)))/(people - 2))]
* x. a& D8 o+ A$ E
set k (k + 1)
6 ?; @3 @1 N7 o2 I" ]+ @]3 J% X! e! R8 e
set j (j + 1)9 h" l9 |. P. t: O
]; X8 B- T& e8 T' P# m8 J" _
set note (note *(exp (- (1 / k)))/ k)+ i7 b3 l* k9 l9 d# X# I1 Z
set credibility-list (replace-item i credibility-list note)
/ w) _3 Z' d. w1 Fset i (i + 1)! T- P) V. c+ A) K7 ?. z5 ~' ^4 X
]; v8 y3 a) K: Z8 A% j! V2 t
end
8 V% o. K" n6 M$ q/ J3 ]
1 y% B0 F5 |( u. y& t4 p9 L6 xto update-global-reputation-list
% e4 ?' y. n  K! t8 Xlet j 06 V6 B, B, K" y; [8 g
while[j < people], c( w" I8 H. n: R+ N8 g& B& ]
[
& A4 b* G6 C. l! a8 ylet new 0
; W% ?; S$ ^8 l# Q;;
暂存新的一个全局声誉& b5 L& v6 b& i
let i 0
6 _% K. T; `- Q- F; ]* nlet sum-money 0) q8 \% p& S7 d, ~  \
let credibility-money 0% a1 R$ q7 S3 t+ D' f. o
while [i < people]
+ j' ?- f8 @' U2 M0 I7 L) m[9 ]* y  u1 v' C, f$ E4 i9 w
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- i7 d: C& U' M0 ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& ~# k9 @+ K- t" p* sset i (i + 1)& ?; r% }0 g0 r
]* d: g% C8 _/ k3 l( {
let k 04 |; V8 e8 L9 ^7 P" i: D
let new1 07 ?6 U( L; H) p; h0 ^
while [k < people]' Q7 T; t& H9 _2 D
[
- K7 M1 R) D1 t  y, Mset 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 d7 s7 s6 {( c# x7 x2 Uset k (k + 1)* L9 Y1 Z' @* v) b* Q( I+ y
]7 E+ ~. v- x4 V4 ~0 R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( c! I& y3 a1 s- X# J
set global-reputation-list (replace-item j global-reputation-list new); Q" ~; ?) k; _  T2 D
set j (j + 1)& B  c3 C8 _6 Z5 `/ Y2 B
]
+ o% v* ~+ f; {* _  V: [! b3 \' {end
6 a, B8 K2 p7 d$ K2 Z0 x1 s( z' V7 ^  k: _9 b) Q

. q8 Z/ ?5 X0 m- j  z
- t$ g8 }) K6 h( H- tto get-color9 {0 B0 R) g" |+ ]9 L2 D  E7 J

; O) g' ?6 l. ?  H/ Y+ O, |7 h) s  |set color blue
- ~+ M, F9 V& ~8 j+ G
end. n/ B4 N7 p& [8 z! J+ [
( l: d+ b2 F; |) V; u6 A6 ~1 w
to poll-class
. P6 [  j4 {" y" f0 R# qend
! J+ t% v. \$ {( j! v, _
$ E; Q3 S0 L2 a: u3 u3 Tto setup-plot1
' m  U3 k+ O* r8 M# z( W
- r4 D* U# m: U: H7 |set-current-plot "Trends-of-Local-reputation"

* t  H+ k7 W, l- d+ ^
3 \; r! `6 I* v$ @# w, d2 Cset-plot-x-range 0 xmax
) Y# C  h9 n* q  |' S# M, }

9 a& b7 k1 G# e0 ^5 ~set-plot-y-range 0.0 ymax

* G5 z) J* h3 O! Jend- R# [; M' m) |, w

; v  |' R; w* L$ A' w+ rto setup-plot2; v+ m- }: r. T. J9 F, _) W

% p/ Q# X% q8 A! r. c# aset-current-plot "Trends-of-global-reputation"

% b% [; O' @# K# A. g: W8 n' y) J
' I/ M" S* O: h- Bset-plot-x-range 0 xmax
7 z& E, h. d8 C

- Y" P8 m9 R1 C9 y( E2 f/ aset-plot-y-range 0.0 ymax
) i- ~- C( L7 I
end
8 S0 A# e3 n9 t- l$ A1 V$ {1 j
- \8 x; |2 C( E3 hto setup-plot3
8 {7 [* L7 D; D; [- W
' |- w5 d# V8 bset-current-plot "Trends-of-credibility"

; h; T7 h' n0 D! L6 V6 E1 K0 v9 @! A3 u) V7 m
set-plot-x-range 0 xmax

% g& n9 ^( Y- J. W3 ^5 Z
' F( v2 U' }& M; |set-plot-y-range 0.0 ymax
) f# W, B# [: ~; x  G" A
end
! R' G3 v, p* Q5 p- T! d2 Y" G/ n7 e
to do-plots
" f8 r; R+ O8 x5 F8 xset-current-plot "Trends-of-Local-reputation"
0 C  L2 y2 s* [2 S; N* `5 l' uset-current-plot-pen "Honest service") d2 E, o7 L8 E. `) ~
end
* b/ [, b! Q1 p& _/ q+ h3 {  `2 {
6 }! `$ H" a1 N7 ]" k# r3 g[ 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.
3 E' }$ Y0 O% j( t/ V0 V: D
( j4 P* A( S& t! x8 \1 f3 p) [5 r+ L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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