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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:1 N" J) {, ~, d% H0 x* V
to do-business
6 w# S6 Z% e5 M. Y) S. a" p rt random 360
2 J5 V7 D0 G, O& k8 f, {* Y fd 1
* o8 ^) q9 q' q; F$ Q ifelse(other turtles-here != nobody)[1 a( b) f8 o6 ?* `  T% R0 h
   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.
* I9 c7 w7 P& W. e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# Z+ y2 M% I. c$ b& d4 ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer/ w* u% Q0 f. O7 B- n4 O
   set [trade-record-one-len] of self length [trade-record-one] of self
  e+ i9 Y$ l( F" Y9 w2 }8 U/ T7 q, P   set trade-record-current( list (timer) (random money-upper-limit))% c: ~- W7 q' T- r' U$ N

5 U  B9 @5 S. I; z; A问题的提示如下:
' r% f" J2 {+ N$ B) w, {$ l/ J/ |  c( y6 n: D
error while turtle 50 running OF in procedure DO-BUSINESS
7 _6 W7 ]. @* f. Z1 X5 ?6 ^  called by procedure GO
# \. L, o, ]2 v/ jOF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 y- w% s4 \; A2 p, H/ _
(halted running of go)
& ^; p* w3 w' v' u: z$ X
) h3 [$ [2 N' R" z5 h0 o5 `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~~
  A1 g4 M# _' }6 \/ E( B# U1 C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# }  V5 B( X' g; f* a! t
globals[; _4 s. k3 ]9 W  b
xmax: l7 h. U! i# e; ~2 O  l0 v; v3 t( C
ymax
: G% n9 i+ x9 e) j7 C, ^) r+ k: Lglobal-reputation-list
/ O( u# E1 n& ?1 j- r' r; T3 P; o0 k3 x, |+ i
;;
每一个turtle的全局声誉都存在此LIST8 s8 k3 R  v6 o% E6 @" B; m
credibility-list* I# H) @1 S9 Z6 ^, g( P
;;
每一个turtle的评价可信度
0 u5 m- Z- [$ X7 a9 Ehonest-service
/ X- f4 o+ ^' C# _9 y" Vunhonest-service' o" g- J2 E: p  O1 X% ^8 {
oscillation$ L0 n- R  z) u7 E: s' r
rand-dynamic0 X! R' a% i! {2 k4 O
]
! t! @0 D" u8 g
* I1 u/ [# v0 k$ Rturtles-own[
- J! V+ H# k/ m5 U7 I) ?% k2 U0 W' @trade-record-all6 X$ e  Z! S( P6 S; ?
;;a list of lists,
trade-record-one组成
0 c: a' v7 L7 b, K# {. Q1 j1 btrade-record-one
5 X! ]* R7 L$ f/ R6 O1 q$ X$ k;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 `' u$ v) V, Q; {& B" x( S) N- B- D! ?3 ]( I) i& Y' D0 C
;;[
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]]
7 n5 |) Z" p! [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]
5 W, W7 a4 V3 [7 rcredibility-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list2 K& L, e9 \0 U8 G9 J; J  R
neighbor-total$ {+ w" s3 l  \. Z2 t$ i
;;
记录该turtle的邻居节点的数目$ ]- y8 |$ k5 e" u4 L* o! I/ J; ^" H
trade-time
# b8 f& D7 P/ ]3 t;;
当前发生交易的turtle的交易时间' y9 a& R* Y  J5 f' s
appraise-give
9 R4 `0 m/ _3 _0 o( c;;
当前发生交易时给出的评价
- n" ]0 h4 @2 |/ |# Q* Tappraise-receive7 W& R  W% U. R
;;
当前发生交易时收到的评价
' k/ \% P% m( y2 Kappraise-time
& Q8 h9 @! R/ I( w;;
当前发生交易时的评价时间) n; [/ I% R# z6 J2 Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉  y( x0 w/ _9 C; x
trade-times-total- e8 N! D% j) l) c& b
;;
与当前turtle的交易总次数
8 v' k3 K: G& w# A9 Ktrade-money-total
  N& U1 Q$ P; ]4 r3 F;;
与当前turtle的交易总金额6 Y+ B* w+ A. A! Z# ~% R
local-reputation
: b% K5 i/ H' @3 W4 `  aglobal-reputation, d% s  `9 N" r0 n3 N- W
credibility" w$ ^! H. v* e9 n
;;
评价可信度,每次交易后都需要更新
7 q# m7 ~/ S; |+ }" _credibility-all
( o) _8 C5 j( b;;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: i0 @* p/ D4 y, X

( d- h5 Q8 B8 |3 G8 g;;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
1 I6 N. N* S' W- l' kcredibility-one
" i/ o5 P/ f" u  I5 K# m;;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
: Z% w7 f3 T& |8 E9 y0 [+ wglobal-proportion$ v  [: c* R; U1 z, A5 K- w5 b
customer; b& {5 V; O6 r* Y5 ~$ x% s6 j
customer-no
  \4 {: P) a. vtrust-ok2 z2 v# _" d+ z/ C
trade-record-one-len;;trade-record-one的长度
7 q7 x* c3 b. s1 U3 P9 ^]6 W/ G: Z2 N4 j' u6 l

7 M. x: `- ?; O3 L) b;;setup procedure0 D. P5 R$ u2 N1 X. X
4 E' s' s* Z) O/ n0 V! k# m
to setup
. `3 r# N- b7 z5 l; F& Y6 s  @
+ N/ }. X3 E3 o  ?" Y6 nca

4 l  V: c7 a, q! G5 d
5 @; X( i0 L& r  zinitialize-settings

4 v: X" i7 x! K3 f
7 \$ @: c# l$ V8 {: ycrt people [setup-turtles]

; e+ X) V6 {% D3 g! U" u5 w, Z$ o( r, G4 M. y2 Y$ F  L: ~2 [
reset-timer
% h2 N  s4 C2 @/ G: S" X0 y

  u* H  q" N- gpoll-class

# A1 X' a- d* Y8 I" S, @& q. f
- ?+ N& Y4 H" E. }% U0 p7 zsetup-plots

, t* R$ ~& z2 e7 r3 `2 j$ A
$ l8 e5 |% L& v' c4 Hdo-plots
3 @* v8 k+ a. y+ d- f6 \
end8 p3 ~/ I: s/ u$ e& y
& G3 x+ Q$ N5 H' g. r$ z. v4 w* S
to initialize-settings
) Z$ Y, C/ D9 }5 O, o5 X# k" |* b% Q: \
set global-reputation-list []

* ?* O2 L% j' z9 Q3 o- k+ L/ a6 N# M0 [+ \9 C6 w/ E
set credibility-list n-values people [0.5]

# p/ X$ V, j3 j" G' x% o+ i$ L
# k& q* S1 S; g1 R" R2 s# G, S4 ]set honest-service 0

) @* }9 ?. b- c3 b1 [' V" R5 L% q2 d3 \9 Y' x+ m5 z, |: L
set unhonest-service 0
( V' l* e# P0 Z  s: ^

1 A( v' C  j0 W* ]5 I/ u9 n1 R/ jset oscillation 0
/ X( o8 |, B# r2 Z2 O9 c, y, r; b' y& g
5 E, L3 o# s1 r4 f6 V
set rand-dynamic 0

) F0 h7 j$ {% W; O' |* iend
5 M1 {2 G' d( L9 @9 T" N. k, \3 G0 q6 e. P8 f
to setup-turtles * j( w) d+ v/ s. Y7 p5 B
set shape "person"
8 n) |& K  |9 q: ~1 E& i* wsetxy random-xcor random-ycor
0 ?, Y6 i' Y2 s% p8 B& e! rset trade-record-one []- M; x# k6 Q( U9 W$ {

0 f8 N$ R8 ?; E4 U, N' j* U9 d4 gset trade-record-all n-values people [(list (? + 1) 0 0)]
7 k; U# T9 a7 q( X
- j3 v% |- N1 U7 z2 M7 R4 B# E$ G
set trade-record-current []
4 h6 w. s5 S% R. p  Wset credibility-receive []3 {+ R8 h% S! t4 c6 h
set local-reputation 0.5
: U4 ^' K6 o$ R5 K6 p7 @) Iset neighbor-total 0
" a+ Y( j0 ^( l& a4 i$ q% G7 I' Wset trade-times-total 00 ]$ @, z( U+ Y. j. h- N
set trade-money-total 0
. V- {4 B( _. I  Bset customer nobody
& N6 c3 q% B6 }6 b. oset credibility-all n-values people [creat-credibility]/ N" L& p% {8 j' [
set credibility n-values people [-1]1 a' A. S/ Q9 }- J" ^
get-color
/ Q/ d4 R# G# p! a
4 Z/ W2 r$ X0 G$ F
end
: K7 h; l% r2 W2 H% y+ y& `! s: A; i! w$ I- p. n
to-report creat-credibility
3 }5 ~; D2 D' h9 sreport n-values people [0.5]
8 T9 w8 ?2 |1 V& A0 dend/ v9 r, {, o; m4 w' }5 a
* ^5 o3 `1 U4 E
to setup-plots* T3 J5 Z- R) I
' L* H9 t: r6 F( N/ e, f- I
set xmax 30
0 |; ?0 v( J2 M+ [  U
6 j$ W+ W7 _# m7 q, e
set ymax 1.0

2 Q( ], h* r8 d' y4 t6 u" i6 m
/ n  Z, Y, l5 _7 P' ~clear-all-plots
) u6 n  A  S; B/ T6 P- g+ O

/ H' d+ g" T- x: Hsetup-plot1
" A  h% Q( _4 N8 L
; U; ?0 S4 d1 @
setup-plot2

. ?, g( [" P8 G' ]0 X& I7 c4 [8 o, E2 I: k, z
setup-plot3

$ H$ j3 }3 M7 ?1 e) P9 B/ ?end7 W0 Y) a* v3 M6 G; j/ Z

" i8 _7 }' X( e  _;;run time procedures
2 b' x' Y- `8 c
- C* M4 x9 `, N- A( Q8 O( Tto go' @0 i6 c. c& T( W- q

& O9 ]+ q" @0 s$ `% p' r9 Hask turtles [do-business]
/ p; r; L, }$ s# o
end3 X% L6 `1 N* [: z
: o0 i* _3 ~% O. t) o
to do-business * W3 I) M  Q% S: L3 r

# T5 o; E. c$ R5 U# ~# ?# x% v
rt random 360
/ c# O6 t6 G% U  E# G

- t% {  D* _5 s/ C  e; o5 L2 Gfd 1
6 i- |* @! ]& b5 V! a/ x
, _% i) F  n+ D6 x0 v0 W
ifelse(other turtles-here != nobody)[
0 ?0 I$ {4 k- h. N

2 a, y" A* J6 r& r' |+ Dset customer one-of other turtles-here
6 @1 q* ]2 ?+ t4 W, x5 n8 _9 e

$ h, t2 o3 C- E) ?* l;; set [customer] of customer myself

$ _! l0 \7 T% `& c
+ S: u8 J  ?. m9 ^3 T' Iset [trade-record-one] of self item (([who] of customer) - 1)$ \, |- P4 j/ x
[trade-record-all]of self5 P  \* G0 t7 l
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ K. r8 J2 L/ t: W9 a* A& T) ^  A/ ~# R
set [trade-record-one] of customer item (([who] of self) - 1)
) z& o8 \) k( U/ O& Y4 E[trade-record-all]of customer
/ i! F+ }' r1 a) h& T( O! a& i

- s, e' s7 z# J" ]6 vset [trade-record-one-len] of self length [trade-record-one] of self

! y/ Q$ R, f2 n$ s6 t( G; k8 b
- h+ X$ E" h- z+ m, x( ]* aset trade-record-current( list (timer) (random money-upper-limit))
4 u4 `( W/ f, t. @2 \; i
# f2 x2 E$ d5 \2 i% q
ask self [do-trust]& g- V( i( X+ w, [3 b
;;
先求ij的信任度
: B8 N) i6 w! `. q* W) l0 R+ S! O. [; ?
if ([trust-ok] of self)9 i% j( E3 K4 _0 R" W! t
;;
根据ij的信任度来决定是否与j进行交易[$ T- y' m5 @1 }' F/ U# p
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. j" c" [. I: S+ J

  `+ s4 d: r6 J! Y  X[
& o$ d1 f% Y0 L7 ~

8 q% q5 @) @# j. p6 l. Gdo-trade

7 j  k  W* H$ n
) c( t* ^" c! |7 n1 u; I4 nupdate-credibility-ijl
9 S" j  m4 c% P1 I4 A* {
" }2 z$ B/ }1 v" x1 J
update-credibility-list( [% I4 g4 G, A. d" I; d( B' ?
  f# w9 c6 [; V

2 `+ D( S. H! {% y! tupdate-global-reputation-list

' }$ Y1 X+ Q5 F) ~& G/ s" Z$ W5 r; z; ]0 G% J# A" }
poll-class
+ c" u% |* K6 J

, X' I( u4 C; S: t& A8 Zget-color

+ `2 i, |: \; v# U5 ?$ m, W0 ~3 {. O$ b! y* q$ h4 W
]]' o$ i/ c& ^3 c- O& G) l* B& W( A) x

3 l( D4 V- q3 N  L;;
如果所得的信任度满足条件,则进行交易
  ?8 A  j- k, h! p% ^3 f; a+ \, g2 N7 X4 V% \
[

' u# k" `" W& v4 N
$ j! W% _; U4 A6 [. O) ?rt random 360

, W( A& u& p" ?8 T: x: y5 V8 A2 \
fd 1

* [( @' c; D  `3 }$ E) Y; A$ m0 [% D
]

& U! t, J  e0 p- C. b
# _6 k& t( M7 `5 R8 k: M- }end

# K4 m3 ]* q' ~- n+ B4 y( k6 m4 B: [% Q5 \# E1 |
to do-trust % ?# u2 G8 u$ Z6 f# R
set trust-ok False
$ T# D8 x7 r7 U$ ~- d: Q6 V! h9 i; v1 w8 k" D' N
" A; g. K  }' ~6 \) O4 q
let max-trade-times 0/ u8 T; l' R: z6 e5 d4 |9 o
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# [: \4 Y/ |' Hlet max-trade-money 0
* I; J/ y6 {" R6 U+ V$ T" w' pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& g; z7 f& J* M$ [4 h. y* W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& d3 L: _+ P. u4 h* ^+ Q* h) d+ n( M/ G  |) l, v7 H

4 V# x& g2 B% a- i2 Eget-global-proportion
( i9 i6 C7 [/ o) Z7 I! u2 hlet trust-value
6 g5 p  L# ^- ?  ?& 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)
, o+ F0 a2 c* C: E) a* F
if(trust-value > trade-trust-value)) T( y( M& D+ S  L. h" ?
[set trust-ok true]
: h1 {: {7 r8 `6 n0 p  }7 C6 Pend
' W: M& Z) ?9 f3 C1 c9 e7 @, y2 ^% t) I! s" Y8 i  d/ x( l
to get-global-proportion
, j  w& k. `) d8 Q' S2 }ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 c+ N0 Q) K  X
[set global-proportion 0]
, n3 Q1 I- c" T! d' r' y[let i 0+ i; T: q5 Z# i- D9 X# h
let sum-money 0
; |- h! f" `3 T' o3 P+ uwhile[ i < people]
- O0 O& Z: m0 t' z[
  K' ]% I9 v; i6 E5 F* T) hif( length (item i' v1 @; v+ s# h2 O2 n% c. M2 j7 Y# g
[trade-record-all] of customer) > 3 )
* y# N# y% G4 [" \
[
7 ~" z- U6 j) N& Fset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# i8 _7 e' l' b1 s0 n]
2 `* J8 ?- M* F. ^]: O# x- w; i+ k' _' G6 d
let j 0! ~: Y( Y% T+ d$ Q2 ]  J: l! I9 I
let note 0# J  M1 c* R. `; `  o9 w9 M
while[ j < people]
$ D( N. _' i4 [[4 k4 o# }$ k/ r: y" N3 V% W& }+ [
if( length (item i( m7 P9 R3 e+ q  H
[trade-record-all] of customer) > 3 )
- r. A) w( m$ f; Z# c: }
[
% j! Q  s3 l& q& Q" ]; aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( R* `. \- J- n- U1 u3 l[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( \" |7 A8 q: I9 d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 K' e+ a) t& q0 W" l( L
]( V* @2 Q+ k0 ~3 L/ r" t$ H
]; w& g+ `4 z. W4 w2 U6 S& k
set global-proportion note
7 _& A# p( K3 R  q5 M3 \: _]
4 V  V# w* c% `( Kend* T  o8 E- b8 C  Q+ d6 p, c
" n6 x% ?0 F  Z" [  a5 S' q  P
to do-trade
, v  o+ c3 J* x& A3 u# D;;
这个过程实际上是给双方作出评价的过程
, [1 y1 \8 \7 q2 G2 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 p& g+ z3 E8 \/ j  L9 ?
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: j& a, q$ ]. O% [9 S
set trade-record-current lput(timer) trade-record-current
/ o& R; Z3 Z) z5 S. u  c4 r;;
评价时间( c: r# @0 E4 G! j2 }7 J% s4 j4 w
ask myself [
% G2 u$ Y+ d7 a! q. ]4 lupdate-local-reputation+ ]. U1 \4 |( ]! A
set trade-record-current lput([local-reputation] of myself) trade-record-current; q) s' `; |0 [3 r) f
]/ r0 l9 [3 {" h& {8 g& Y/ b- B
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 D. p4 G% y, u* M;;
将此次交易的记录加入到trade-record-one
' ~: E( R& n- c* `  a3 J2 q! vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) b7 C, {# N( Z  T9 d8 D$ [2 p+ x% W
let note (item 2 trade-record-current )
& n& @' }0 j8 B/ F1 f* Y, rset trade-record-current) G2 _8 F, K- `. g7 u
(replace-item 2 trade-record-current (item 3 trade-record-current))
, z% G* ^, M' y. K; ~/ e
set trade-record-current
4 {: G5 V2 t! |5 S8 o(replace-item 3 trade-record-current note)
9 P( ~) ?- X/ n6 j' ]
7 q2 B) V. t/ z5 n) V
: P& _4 L3 D8 m
ask customer [. m5 v$ b0 }% C
update-local-reputation5 U! }. W' A1 e! m8 t
set trade-record-current0 G* o- u/ Y1 x6 k
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 W; i# Y) ~' X7 T5 [  Z]
4 S8 L  z7 X  i5 q0 N: U" c, P# I: T
; I4 K) _: h8 }, p" [& V
" K/ G: I  W- H1 v
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 N+ n3 x! X, T8 A' |; o( {

' _7 D" R' A' v/ H" A6 q/ }set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  K" h* Z* Q5 n. U1 J
;;
将此次交易的记录加入到customertrade-record-all
6 ?7 p0 H* D- O/ |end1 ]( h/ s+ Q. E5 G* T

& S" x- D( V! `! Nto update-local-reputation2 k& Z/ Y) y# Y3 \- y5 H6 W2 k
set [trade-record-one-len] of myself length [trade-record-one] of myself
, N3 O3 [3 R  @2 s) v7 m$ X$ L5 m/ h) w2 S, y* Q3 l( @! l
" l* S/ l% X- b
;;if [trade-record-one-len] of myself > 3
. ^" i) H! D$ K1 E* s( P$ R6 g
update-neighbor-total/ e6 S! W7 _/ c
;;
更新邻居节点的数目,在此进行
, b; D' a0 }$ U% dlet i 3
# i) G! i- M- N4 a* Alet sum-time 0+ E, |' z4 l& E! E) x1 o
while[i < [trade-record-one-len] of myself]
! ?% W! l: Q5 y  E/ Y[
: n, i% w4 l: ?* O. p  C  B! W) }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 Y0 q) ?: _. o& Pset i) B' j! m( h# J/ k1 L5 U
( i + 1)
$ _) K, ?+ J7 v6 ]
]- ?2 [3 P) u  C  x& I
let j 3
' G1 T" Y' p9 ~( ?* v6 v- _let sum-money 0* }8 R: o- J! u0 y6 z
while[j < [trade-record-one-len] of myself]  j% U3 H. a  G; R0 M
[
, n8 E/ n" h; P! S7 w9 E" `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)) O9 k' I6 T: w
set j2 @% v' `! j# B$ y4 [7 ~+ i
( j + 1)

, w+ U" ?# j  c0 ~% ~/ O]
" A, p$ q3 L- ^" S0 Dlet k 3
- w0 X# K6 [0 J: M! \: r; mlet power 0
9 p, a3 a& M7 h6 N0 R% Z6 Jlet local 0% c7 c+ o7 s0 P/ a; h; V- Q& m
while [k <[trade-record-one-len] of myself]
/ N7 O+ N. ^. w- s0 l) @: }; B. N. V[
, Z; v/ M, d* T. \( _0 o# z/ Jset 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)
# W5 r* L9 i  Q4 fset k (k + 1)
! e* c, w. ]3 [; t]7 R- K4 u" B" f  r- j8 u
set [local-reputation] of myself (local)2 i% G1 v; i3 i3 \; t) B) N$ N4 l
end* x+ X$ v5 }! u* x

* H* u' l( P  K5 qto update-neighbor-total: B, s# t! |. t, O4 W+ P/ d
! P" V6 h* {' Q4 w; {
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) o" K& O7 v. R
8 U0 V% X) R# K9 E2 ]$ s, K

9 ~% T$ ~" G1 ^5 C7 lend' S. @' `1 _$ Z. m& V6 R( L

2 u. |0 W) }$ p. \  V) Mto update-credibility-ijl
4 `, y+ P( L* d* _# x
; I$ n  M- d/ z9 T  p% M& b, Q6 [/ R;;
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。# k& C3 Z& X0 ^# J
let l 0: n9 @0 ~; p$ O" n& N
while[ l < people ]( E# _% f0 X$ ]
;;
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% `" [  b* K! X& _& p+ W) |
[
" `# n; j; E; g; ?9 x' f: R0 `let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' k* V- o' {* Z% ?# x+ P
if (trade-record-one-j-l-len > 3)5 ]; ]7 B7 ^7 v' b! a* U1 E& V5 B
[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-one9 f0 h- X+ D1 J# p4 W8 F  `! D7 i
let i 3/ s7 J' s5 T8 J! M
let sum-time 0+ p$ B$ u9 C# q2 Y- e
while[i < trade-record-one-len]; D# B- m/ U8 I; y- F  b
[
6 o! T% g4 p- k5 W: eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 I0 ]  y4 j! i/ k) q0 D6 A" qset i
& A3 l/ _3 b: _( i + 1)
( c. c0 |' e* q0 ~6 O: x- ^
]3 d$ c2 a+ J3 F& q! ]0 Y& m9 |+ S
let credibility-i-j-l 0
' l, ^9 |  J6 F% E4 r;;i
评价(jjl的评价)5 t" V7 |/ Y  q4 T/ O( H
let j 3
, E) v- f8 P& E) U$ Elet k 4  T9 F% C( G4 `, `+ R
while[j < trade-record-one-len]
, L" h  S3 g1 s% r# J2 p[8 ~5 F1 C: U% ^* e  b  ?" `
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
3 _2 O3 f+ K4 h* W. [. {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)
& m; b, s1 N$ Wset j' }) z/ d( p. }, F: k' t1 I
( j + 1)
+ I. l- ]- G- a& N, V6 W
]( g* i: l, R5 A4 Z
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 )): r5 l: A8 d8 Y6 p+ A) N* Q
7 J) j) A/ o8 G# Y6 j7 R. E" m
% Q7 R- {* M! g/ ?
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), H) j" l5 g, |) o, b# W; k# \
;;
及时更新il的评价质量的评价4 W2 j; z4 X. p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 P1 g6 ]% l) x" P+ g+ @; W% ~) hset l (l + 1)
9 R7 f1 N* j9 T' t2 n]
1 K* S( k! W5 b4 z/ Eend2 j; X+ y7 J% M0 k0 V
* v8 c2 K, ^$ R% R9 \* D
to update-credibility-list' m6 ^2 G- i5 ]; v; A2 ?, [# ~
let i 0
- d$ X  u& C4 j2 X  Swhile[i < people]
% o' S5 v) d% z  ~' O0 R" v! P1 ?[
  w1 ?7 z; g% _# R" B. l5 |7 M, `let j 0
0 q' Z3 k1 `! V4 r7 blet note 0
: ~4 B2 _! c% J) _, Alet k 0
' T" E$ R  Y3 o0 g: T0 Z;;
计作出过评价的邻居节点的数目
0 a% m! ]. X, g1 Qwhile[j < people]
; c2 c) i- G& W0 I; y4 j[
5 s3 {) E6 h6 gif (item j( [credibility] of turtle (i + 1)) != -1)% O" ?6 T! m# q- G* E
;;
判断是否给本turtle的评价质量做出过评价的节点' H8 c: b' S  z" l1 O  t
[set note (note + item j ([credibility]of turtle (i + 1)))
4 g0 ?/ [3 i4 u0 q, u/ C9 o;;*(exp (-(people - 2)))/(people - 2))]
/ y) K7 V; r# _8 X5 m
set k (k + 1)
# e$ S' }' Y5 \2 j! T+ r]
( E0 L+ j/ h' |% V% j6 Jset j (j + 1)
3 t  Z; U% v' j# ?: F" \) U) U! ]6 X]
' U3 k/ `: `4 F! H6 Q5 tset note (note *(exp (- (1 / k)))/ k)- }8 U& N: P# q
set credibility-list (replace-item i credibility-list note)
5 O# R' W( ?( |& P. I' tset i (i + 1), R' L( @4 s6 K# w$ y7 f! K# v
]: T( f! R% j% z( }' |% h6 Q0 B& a
end
2 l- H; t) i/ s- }1 `% n1 h% T6 h$ s5 E+ M* g! e
to update-global-reputation-list
' o( m; z( B) y/ \5 q. alet j 06 e  q! d* X" X9 M$ X: y( C
while[j < people]( o$ N2 e7 \4 y
[
2 e, C9 r/ {5 V1 M1 x1 v( j1 nlet new 01 Z# l/ k2 q6 X
;;
暂存新的一个全局声誉
4 \. K9 U. Q, K  T2 nlet i 0
* R$ v2 f* v& @1 plet sum-money 0: G( v8 U! o. ?6 H, b
let credibility-money 0
  n$ W7 m9 z, w8 f: G' K, Twhile [i < people]6 E! L5 n& j- h' e9 Y) C
[
* k$ F1 s( d9 _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ @3 k2 X/ W. Sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" D  |, a6 y/ D% n& a# Z" M& p
set i (i + 1)
" x& m0 t6 [: T6 ~5 d1 Y" P. T]
. L/ f* M7 e2 H! zlet k 0
. E5 j: Q* w9 g; T6 m0 i1 Zlet new1 0
4 ?, D; b' j2 ewhile [k < people]- ^0 i3 }8 w. f( G; i
[7 C. }+ c& Y7 X- \+ B' ?) K! d
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)1 f. r  p2 A$ e: j
set k (k + 1)* T* b2 S8 C' m7 Z( S5 m/ ^2 F. R
]7 I+ k7 }) r! |, M  \
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & |4 ~2 l& o3 {( @
set global-reputation-list (replace-item j global-reputation-list new)
" i, i/ \5 B4 K* `set j (j + 1)
, Z7 T$ C3 B: L]8 o: P) z0 T( s6 l/ \/ A+ V
end5 Y# D9 h& }( P  O+ Q7 L# e# |

4 D. _9 Q+ r2 M" E3 Q5 {" V# Y  O7 P; G0 C

% j+ L7 N& T: Y. i% E1 kto get-color; ?4 }! g. u& l* C; f; P) a. v

8 L7 \9 `; }0 L$ d' D" [set color blue

0 y8 `. q" s/ P  H2 `& q( ^; Jend
* J, c7 s/ M4 @$ ~* {% {8 u% u( Z4 g- U0 O
to poll-class
' i' s- ^5 [  Q' C( \) r* rend- D7 V! x+ P* j' o! n8 @& C8 }

& n& Q1 \4 u! X- {/ y% _; L' ]to setup-plot1
! y7 b; s* d$ K- F% N# z- S1 H
* m; T5 j; ]$ N; V1 k) `+ n5 L9 Nset-current-plot "Trends-of-Local-reputation"

' E  `( Z3 F, D' p0 Z  G' ?
" a( M( I. w" C7 I! Jset-plot-x-range 0 xmax

' x) K4 i/ H. G4 a9 U" d# n; k" U7 U0 ]# v& r% z; ^1 B  h; a
set-plot-y-range 0.0 ymax
# e8 V* q$ D( ^
end9 r$ d3 r+ L; m7 [( V/ W% s
) J3 ]* j7 a6 {6 ~# l5 k+ [( h
to setup-plot23 X. G2 s' d+ S; C7 M5 Y) D8 c
% X& q+ f, |& J, J
set-current-plot "Trends-of-global-reputation"
4 \% x. |, J+ y1 u" O( p8 e3 ?

; l6 s- k9 \: p; aset-plot-x-range 0 xmax
" D. a; }0 F( Y- t9 i/ ?

0 p2 @+ q, d: Uset-plot-y-range 0.0 ymax

& j0 e0 L! n' b; M2 n( c, kend
) T/ I7 z5 S9 C1 j: d% X! S% B, p% w+ e) b* x6 ~
to setup-plot3
) C7 Z$ Y3 w; H/ t0 c7 S# a8 q3 V3 F1 o
set-current-plot "Trends-of-credibility"
9 z( s1 g8 s# m3 D
( F2 ]% m7 W0 U, v
set-plot-x-range 0 xmax

& A' P' v2 [. w# a- d
6 l. M' \$ T( N3 d4 [set-plot-y-range 0.0 ymax
2 z/ N# j$ A) ~9 G/ \3 R
end
0 V4 @' T* n, d3 o5 O) w9 G8 M2 B" y# ]0 ~- l
to do-plots0 d' p5 c7 B. Y( U! \+ L5 W
set-current-plot "Trends-of-Local-reputation"
0 K2 X- r7 L7 B# P: o/ gset-current-plot-pen "Honest service"* o& I0 t9 Z, A& E+ z5 z+ J. Z
end
# R; H- {4 E# q2 A5 \: }
  A1 k# a+ r% |0 R5 U, q+ Y[ 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$ J7 V8 I6 M. ?3 y) ]- ^& y
; L2 U7 Z7 M2 J5 q8 z) \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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