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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
  }! O. O. @# l9 sto do-business
4 R/ S3 }8 B: N- _& s' x$ y/ I rt random 360
7 w/ H. ]+ w) M! d+ S+ } fd 1, y: L/ T0 a% g+ p% `
ifelse(other turtles-here != nobody)[) T. ~" A# K1 l! \  w% e1 s
   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.
8 N6 t- g% `1 N   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 u. j* s' _7 h$ K' `. y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 z* }/ j- \2 J+ a   set [trade-record-one-len] of self length [trade-record-one] of self
2 c5 ^; q2 L2 G- w8 I2 P# P; u3 q   set trade-record-current( list (timer) (random money-upper-limit))
  m7 S2 y  w6 o  Z  H8 a1 M1 N' O2 s& u, e
问题的提示如下:( x, }; Z, N/ s0 Y
, k+ w- }" |" V+ x4 _! ^
error while turtle 50 running OF in procedure DO-BUSINESS& F7 v0 R4 K- J9 r
  called by procedure GO  r2 E1 |6 J8 B% j5 d9 s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.' I& T! g$ w$ t# F2 T0 l; g
(halted running of go)
" ^% A4 A: U' q9 G+ Y1 V/ r# I; x3 L! L) ?6 k  k9 y) J
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~~
" {. ~/ t! a$ W. }: M! U% Y% G% }" `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9 ]: j9 B0 G+ I( M$ G
globals[
- s5 F# _) ?& [2 q, W( k3 s$ Sxmax
4 |" \: W9 s1 X( lymax
/ ]9 e( N# O! N' t/ x" dglobal-reputation-list2 }, @2 e& p' D8 M0 ?. N0 n

- X3 I# Y& v; }* x  K; d;;
每一个turtle的全局声誉都存在此LIST. ?* d$ Q& {0 \1 y/ m
credibility-list3 I$ `- D+ \" r* H6 q5 W" `
;;
每一个turtle的评价可信度) I$ L+ J% O- ~" Y# ^, J& b
honest-service- w- P3 A& Y9 k* s$ _
unhonest-service, @  [, f& z, \+ \2 k3 j8 i/ Y
oscillation
, W* p5 Q6 K0 Wrand-dynamic
- J( a8 d; ]+ L! j, q% ]8 q4 A]6 Q& ^& t2 P3 S

& Y) D$ Q; P2 e" e, G+ Gturtles-own[
/ E: b" D% U# C9 P" l. ]trade-record-all1 k4 ^* V9 C! ?% e% @  T
;;a list of lists,
trade-record-one组成& ^: B1 q# j# O- o$ T4 g$ R! X
trade-record-one
' R( O0 |2 A3 a1 c;;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- E* b+ w! f( Q9 L9 u6 a
: d& b) j6 R; f  w;;[
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]]  o- S; B- l& s' ]$ [. i+ S
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]! ~% t7 g8 P( H" ~5 a+ }
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
" ]5 M7 ?  J1 Gneighbor-total
8 m8 Y; v1 a) R1 C;;
记录该turtle的邻居节点的数目. e0 {; y  _" j4 H
trade-time
! F3 s# A+ y6 u8 Y5 g# c;;
当前发生交易的turtle的交易时间. E4 s$ d% `6 ~1 @6 Q5 z7 n9 M' Q
appraise-give' E+ F" b3 B6 c$ k0 P
;;
当前发生交易时给出的评价
5 x' D% i: P+ F7 `# H  Mappraise-receive
- T% x: i+ \& z4 T: @;;
当前发生交易时收到的评价& e6 Z. V  Z8 n% N! T8 q) x# `
appraise-time/ m6 K& D$ z$ b' G' V1 w
;;
当前发生交易时的评价时间1 E1 |2 o. j! g# N! e1 W8 p* v5 R
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, b1 g* S( E% K: u: s3 t1 Q1 r' [trade-times-total! f* ?0 U" C7 ~5 t/ }2 z# p
;;
与当前turtle的交易总次数
$ _. m( D! `5 q, \  Otrade-money-total
. w8 M0 F3 t/ Q3 |: K! ?: C+ W;;
与当前turtle的交易总金额- o% ], Z+ ^8 O0 ]; e
local-reputation
5 s; s/ H2 Q! ^& r& G* D' Fglobal-reputation
- Y! Z( c% t- c# ~8 G% pcredibility: `- g% E, G! l
;;
评价可信度,每次交易后都需要更新0 X6 A% v, V" L6 Z
credibility-all
* `" K, ^  \7 I; W" h6 Z2 F  j;;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
. e7 L5 i- O9 U6 D) z7 ?6 L' h) @7 C4 t3 a/ t$ 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) j1 S, d# i) P& V% b
credibility-one
$ P' {; [' C& j8 ?6 T  I: o& V5 F5 e;;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people5 U6 V; O: ^' r; z5 e) q0 R
global-proportion
) b4 |; I2 t7 C" P# \# Jcustomer
" u1 H% D& n  H, v+ M) _9 Ocustomer-no
$ v: a9 U0 B. G% \( z- v: Utrust-ok& A* R6 O( Q& h$ K# u, R2 I, H
trade-record-one-len;;trade-record-one的长度
" {: R$ h* ?* A3 @7 M]
, N# I5 k/ O. o! b/ t7 R
# `& }" M4 f( ];;setup procedure
0 Z" {7 i* c6 t5 q2 d
2 s( B5 e% \/ G* Q# ?to setup$ \) M! ?9 V* b! A4 f9 Y6 F6 o
$ M+ D1 T* k3 B7 C! w
ca

% u3 N( y( o# ^+ U. z
% h, M/ }* n! \# I& winitialize-settings
5 D+ q5 b8 ]+ Y, n$ _; T
4 H2 h  e3 C6 y+ Z$ @8 H8 E" t5 [9 {- W
crt people [setup-turtles]

) j- s. z+ }2 R# [" k' p
! r; l- J) g' C, ?0 mreset-timer

/ s' L; f% G) g# w7 h5 P4 N6 i; S& O$ `% p7 K' O* B# T# y' F
poll-class
; H1 h2 G, g. `+ l' P  D* S
6 o+ V/ Q$ _) F) q. N: |! x- F
setup-plots

2 O5 Z1 i1 v' [6 `5 s( N) A' E9 h& ^- b5 z% `9 W5 X3 ^& `
do-plots

) U+ ]0 p4 a% \2 h* w# Gend) a, H" a* k# Y/ H9 }
. B+ Z" V# y1 q: Z( j0 M. `) v
to initialize-settings1 w2 f$ T1 t% J/ \, l/ p
5 V# y9 Z  p. z3 P" Z" ]. d
set global-reputation-list []

1 p: E) A4 F% P1 s5 U1 ^  Q/ ~! j  A- y( y% F1 w
set credibility-list n-values people [0.5]

& p* [" v9 g3 {" g7 v
1 z2 E) n  f8 T: @set honest-service 0
  n8 Y+ g4 S1 \0 y6 k- B5 O! P9 t+ ^

) q  _3 Q3 p9 f% y) L% u$ I  W; aset unhonest-service 0
0 w3 a( \2 F. r4 B8 A! n

( I+ ^" C5 \, D! uset oscillation 0
  n) l. F: j6 d( `: X
  H' E' S0 D( M. d7 ~
set rand-dynamic 0
/ v! l# q! i+ h
end
6 d, ~1 X; X) m! Z1 s: d6 {! f# l+ l8 B1 W  I/ W; Z- Q: x' x* _
to setup-turtles
  x' ?1 S+ e6 Bset shape "person", F+ \' \' z% |) O
setxy random-xcor random-ycor) z, E; Z& j7 N: v/ o
set trade-record-one []! @! S$ W! c  J& U& ]
" m  _5 @5 ?7 S
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 `) n6 e5 Z+ l5 K- q8 V/ B3 [

0 P2 \) b, _0 B1 \- [3 zset trade-record-current [], |. }9 w. @/ M8 A3 W  y( g! A
set credibility-receive []# K/ N. |- y) K+ H# d- P% z
set local-reputation 0.5
7 j& i, h4 p* wset neighbor-total 0
1 w2 P* Y9 `: P6 ]" h3 zset trade-times-total 0; n- n# f( {; `
set trade-money-total 0& r- o& S5 R+ Z* D( P8 L* }$ w
set customer nobody! x1 T5 n  i8 e& \6 T
set credibility-all n-values people [creat-credibility]
, D7 B; ]& I( r; u9 Hset credibility n-values people [-1]8 f" P2 S4 {  {: R2 x: I* L
get-color3 B$ `. w/ W: i9 l6 }, t! N7 T4 O

+ S( v. X, g! ?; s. i" a; Mend: e5 b5 Q, }4 ~0 f* l; k+ v3 S
/ H/ T' j: W, Z$ N
to-report creat-credibility
9 Q# H- ?5 b. u1 l$ D' vreport n-values people [0.5]' ?4 ~) Y5 S; u0 M8 V! O  j' ]
end+ S+ O. O$ z( P7 D1 K/ J

! T. U- I* K. J1 S8 A  W: Ato setup-plots( l. n& l/ d! z8 g1 e

" c/ Q8 K# n& [set xmax 30

' y% M; k1 x1 w7 H, F
9 e' |: ^1 T) }( i8 qset ymax 1.0

, \5 X5 Y' o  @. d) d) M' ]
6 e. {+ L' ]& F8 L2 cclear-all-plots

  w, Z3 J' k; _3 R- F# c$ E7 h
' C9 T8 g( e# }4 ?* j. Nsetup-plot1
( X2 I' ^, Z4 F( o' c% G5 L
* T0 c9 ~" R) O  g" v3 U  v
setup-plot2
+ v0 V5 n0 r" |+ t

; }# q0 @, V  `$ K9 ?setup-plot3

6 x6 q8 z8 U2 q9 p8 Z) R; Iend
! r( F" v& D7 o" n$ B+ f9 z! w: P, s! M  ]
;;run time procedures1 |; Q+ K# z' d) ]" j( O3 h
% X6 ^* E" j6 x6 y
to go
4 J5 T* f  u5 z8 p0 u3 M
/ N  y3 \6 N/ w5 q# U2 ?ask turtles [do-business]
! r: i0 |2 H$ A4 Y& k
end+ }8 y. m; K6 X3 f% q

9 F7 |% S  s( a, u7 hto do-business
# J/ M& X$ e: }, l  D& G2 D
4 [/ n1 l6 J5 P! L* x

% p( Z! B1 B" _6 N0 Ert random 360

" j* N: x: L0 t' C! g/ F2 A# N# u( H) k* a9 q  W
fd 1
  x( D' m( y- d; O: j/ b+ Y
# t* g' @+ t. }
ifelse(other turtles-here != nobody)[
( E2 j8 v5 G9 I8 T% ~
  M; T0 e4 c; J! g* V: D1 n1 u( f: ^
set customer one-of other turtles-here
0 j+ i. e: R& d7 @8 [

. t$ ~# U& n* [* i% N$ C7 f+ f;; set [customer] of customer myself

- R- r; s- p4 ?% p
9 r# P  ?# D! o8 m" mset [trade-record-one] of self item (([who] of customer) - 1)6 L$ J) j* v" `9 k
[trade-record-all]of self
+ L0 _5 N" b3 H0 X% \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, r1 Y! L, e2 z9 @: E

' l8 |5 O8 `4 hset [trade-record-one] of customer item (([who] of self) - 1)* o$ A7 n& j! A
[trade-record-all]of customer

+ V' I7 y- n( ^% h2 O4 ]; N$ {3 f$ S* M2 a
set [trade-record-one-len] of self length [trade-record-one] of self
$ O+ V8 W. k; P- \/ S
8 t# \7 Y  I( i, n9 o9 |# u
set trade-record-current( list (timer) (random money-upper-limit))
# `  [: ~  w4 E0 R7 L

& g$ I! k7 s+ J7 P$ qask self [do-trust]
3 E$ s; Z0 e. e* a% |;;
先求ij的信任度
3 \- i# M& [: k8 N
3 d- E% R2 v; A# ^6 p: F! ?if ([trust-ok] of self)
6 L+ B$ K5 h$ y, y- O9 q6 r;;
根据ij的信任度来决定是否与j进行交易[
, i- o+ N6 G4 b. d2 fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- f, u! g4 x9 e+ P

$ x- W" W, O! s4 O; A: k[
- R8 o/ J' I- q1 I% A0 M( `
: e- o5 Z4 A5 w# Q. I: G) n
do-trade
' L- y# l1 P, B

- v: H3 ]3 O0 q$ tupdate-credibility-ijl
# \0 m0 V! h# s# P

9 W$ |$ ]2 X& e! B8 @+ Cupdate-credibility-list3 L/ h8 z+ ]1 ?- C

8 `. M. K/ T/ O* D6 Z& {6 p
* c$ T, n) z# Z* Z+ M9 s7 }( tupdate-global-reputation-list

7 b1 F' a2 A$ A' A8 Z5 [
4 p$ {8 w  n4 P3 w: C* u, F% Ipoll-class
. j" ?! ~! \+ e0 t
! \' D/ k- t" C
get-color

* L+ r1 b8 s$ b- m0 Y- w1 g# V: u2 C6 |
]]
/ z* n1 M/ w( C- \8 U6 `0 y0 ~; w. ?( n& y" `0 g
;;
如果所得的信任度满足条件,则进行交易
4 d! j, b5 Q1 v+ W/ @5 M/ A: S: T2 A
[

) w# X9 E' f( C, S- e. U! A& G1 k0 L! l2 p/ l0 ~8 ?- j
rt random 360
) ^' C- F" y4 t4 J. G* G$ |/ V
, o' J/ j7 W7 F+ ~0 [  b- N
fd 1

* o# w6 [  t1 Y/ _
- j* J8 q8 j/ f9 |8 K]

% E, S+ J; O% j4 t/ E* [( _+ x: s+ u  d$ O) c8 ~; R
end
) ]4 k1 i# b: G3 O" W* t
; J5 H/ @' l1 o) C0 H
to do-trust 7 [7 u  z$ Y! J/ M2 ~" g' o1 \
set trust-ok False
1 Y# h" Z' d8 L2 o
0 |$ a( o* i) N& m! X0 u

+ }; q- [2 F  D# zlet max-trade-times 0
2 _: w/ L: J( M4 ]# g, C- fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% k/ H2 W4 P$ Flet max-trade-money 05 g. `1 t; S1 H! Y* x) u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
9 t" u' _! d+ f2 k* P7 f3 q, ]# d$ mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 B- n9 Q# g" J3 f* n5 S9 B7 A3 a. k7 B9 m  G

' ]- ]' ~$ U8 t0 N% e  [1 b  Yget-global-proportion% n, Y3 o# l/ ?; J. Q3 s6 z
let trust-value! ]4 h- g. C. p4 v+ [( @# i2 n* U" J
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)

7 i- u# {# Y; h4 R& e; d4 j+ }if(trust-value > trade-trust-value)
% Z. e5 E. M2 _; Z- B[set trust-ok true]  h% O3 q5 ^& Z" ~8 S3 K! O: x+ S
end: s3 A+ G7 I# l  Y7 f
! F$ r( D. _. S1 c
to get-global-proportion
- P+ ]- m: \9 @, yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. h- z$ A& T3 m6 A$ ?* K[set global-proportion 0]
2 X/ t& T) b6 n7 s- F[let i 0
) ~' g1 ^/ x4 Qlet sum-money 0* \) U0 i4 i. }5 c7 F
while[ i < people]
+ Q" q  [! V( S( f0 O[/ z$ J: S6 E5 _# e
if( length (item i" C, S) B5 |0 r; k
[trade-record-all] of customer) > 3 )

0 X2 l/ B5 W9 A$ g1 d[& w0 Z0 u' I5 i2 W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
5 ~" l: }: R, X4 a]
9 S% Q5 w2 Q' E1 V4 k4 }! @, a8 @]6 w* a1 y1 X3 N( {' K. V9 j
let j 0; Y5 C. u8 t, k# ^9 r
let note 0
( B! r4 C5 A" }2 y! B( ^while[ j < people]1 @% O8 F% y, i! m7 N
[; F4 [7 a" c# h1 U
if( length (item i
% N. R; G# P- U[trade-record-all] of customer) > 3 )
2 d% |) w6 t/ @0 K1 w
[
% R! d! C' ?, w' K" V6 {ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)9 H3 H# \9 f/ U  W
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
2 N* L  D. p+ {6 |0 y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ C) G: _- I! l5 G]
( [5 [" R$ o1 V* ?2 f2 q) i  W]- Z  f! w. O- _8 e( A2 V8 w
set global-proportion note2 _2 ]7 I/ F9 m3 L$ L) U$ u
]. s) `, G7 {; u; I- b  c
end
  c/ i  U+ Q5 a: V% a( H5 l4 d" i8 H4 s: a" `6 H
to do-trade
( Y) y1 R2 s9 Q/ X8 ^;;
这个过程实际上是给双方作出评价的过程
" [# \& e8 l# K% L8 n0 V. w4 x7 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
7 _2 G# T- o2 Rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 A; y4 T3 B8 z$ [& t% Y
set trade-record-current lput(timer) trade-record-current% ]. V5 U, x% k) n( E
;;
评价时间
0 z/ P5 v* Z# E0 C* b, cask myself [" ?, s& I; J7 u3 Z
update-local-reputation# u: o  {1 A8 \* K2 K
set trade-record-current lput([local-reputation] of myself) trade-record-current* f5 f& v5 t3 g$ f/ N  Y
]) a9 R" l/ G3 w; M% |) k0 ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 U6 y; D3 D/ X- \5 c+ l
;;
将此次交易的记录加入到trade-record-one3 p; Q7 U. \8 r9 K3 ^7 t& l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ v# ]1 o& y9 A0 e6 j( K) A
let note (item 2 trade-record-current )
& S2 z" y* t9 `* Mset trade-record-current) Y$ t& x8 }' _
(replace-item 2 trade-record-current (item 3 trade-record-current))
  E' l/ }8 r' c* K' {$ M
set trade-record-current
1 s4 q7 o) j7 V, |( D! i(replace-item 3 trade-record-current note)3 m0 a9 h' _% v$ n

. T4 ]# ^) l7 S# A7 Q

" J1 C9 K+ O8 d8 Pask customer [
4 R7 @4 s) @/ {6 D, \update-local-reputation
8 ]* |% B' ^" K3 J7 C7 m/ Eset trade-record-current& v. l; S3 N- B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ l/ N! W! k) |6 z2 K
]
$ y+ J8 m: S# Z4 `
: y2 y6 \' t/ f/ }$ C6 Z5 n+ V
! E" _3 J0 R# O+ h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 j0 ~1 e7 G/ s) S, M

1 O8 V- d1 d$ o$ Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! m/ c1 F7 f7 Q! Z! \6 [  v( ]4 ^
;;
将此次交易的记录加入到customertrade-record-all
/ Q8 A+ h! w& q) r/ O4 h4 e  k1 Vend& o& ~1 J  K0 B# }3 C6 y

* Q! s: l; c  |; m' A4 I. Gto update-local-reputation
$ o) A/ {# S3 lset [trade-record-one-len] of myself length [trade-record-one] of myself$ r. q1 c7 q. x1 N9 p0 y

( W  k! M. \) w" A8 r1 c1 v( C5 b# S" H% S
;;if [trade-record-one-len] of myself > 3
; @8 |' y6 P- {3 P
update-neighbor-total
$ o2 i% O+ w4 x* F# f;;
更新邻居节点的数目,在此进行
, v; a7 N: h, E. e9 D' e" s1 Glet i 3
/ Z0 l6 k8 E7 }3 [let sum-time 0+ f8 |% {" V$ G5 {, M% z9 R
while[i < [trade-record-one-len] of myself]& b0 v9 V2 K3 M  f0 b' J
[5 Q5 s( P8 V0 V. J" [( d
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
. |2 Q! h: `. |* ?( c3 j2 Iset i' R" }% f7 k& L/ s+ c; d3 }# _
( i + 1)
$ G+ F. I  a5 |- |( Y
]
* z2 O9 G1 Q  i# r9 Llet j 3
. r- n' j! l' G, olet sum-money 08 a+ }3 o6 ]$ ?1 m$ @
while[j < [trade-record-one-len] of myself]5 J' i0 A) j1 m1 t7 Q0 v" L
[, w8 r1 H9 O4 f( L
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)) \8 Z4 e; o9 a" z& ^$ B9 s
set j& J: q0 h! H6 v
( j + 1)

# b+ }7 _* m& Y: I2 n5 J* \]
' q/ ]" ?( Y! I& ^. c5 E1 Y5 Qlet k 39 ^$ l1 X0 v, k7 _. t
let power 0! u- Z4 w3 R& y- s0 ]3 h
let local 0
5 R6 L9 I9 G6 Cwhile [k <[trade-record-one-len] of myself]9 u- {5 B8 K/ ^8 Y0 Z+ w
[# T4 M5 D5 n) Q# G& j
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) 6 m7 {0 N" Q. ?
set k (k + 1)! J  N2 G) f! @  [% o% c4 o- N# j
]
+ P. q0 F) n: y. g# {7 vset [local-reputation] of myself (local)
. p3 H8 L5 s- ^end' W: O9 X5 P3 E! K
) c% P1 `, V/ d. [! U1 @) m
to update-neighbor-total8 A& |0 Y6 R6 O- W3 e* L

! V- b2 Y0 \. }! m' H: Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
3 }8 b6 u. _+ I' b3 W( K
6 k2 }5 _% J* w% w) P
& y- W, h' N- I: p
end
: I- f; V# _: ^, u5 S+ d" O% o( y8 |; \- u9 ?" I
to update-credibility-ijl ! K! l* l1 S  S+ @  X6 ~

. n; ?7 B1 A8 X4 q  R' u. Q; ?;;
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。
: p7 s5 i( n; G1 ~9 s5 v" U" Olet l 0- @4 U/ e. Z. d- c4 f
while[ l < people ]
* t; {" G3 ~1 K$ ]* b$ r( o;;
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
: @0 l( u, S1 n% x) N! E[
1 h# _+ t( t9 N) b+ U! Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& t$ f# P5 s% D8 l7 W4 m1 sif (trade-record-one-j-l-len > 3)
+ y8 B  G8 @$ p2 y6 {9 K( L. a[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
4 J* a4 l: y0 n; Qlet i 3  c9 n  u( q. P( `; J
let sum-time 0
* ]# ^$ \2 }8 Twhile[i < trade-record-one-len]# f% |1 }2 W' Q  y
[& d# V: s: A: Q4 R
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 G2 J1 o1 p4 z8 z' }9 pset i
1 H  B) i. z  h& e( o9 x( i + 1)
* `' w2 i+ T7 j& A$ }% J# X6 `
]) x& r  [2 y4 [
let credibility-i-j-l 0! _. R, J) P; l
;;i
评价(jjl的评价)( d7 ~1 ~2 u& [0 s1 v: u
let j 3
. W: g+ g! o0 r5 g6 X" V8 j1 i4 [let k 4
  M* @9 k5 d7 `1 w. dwhile[j < trade-record-one-len]: Y7 N) O5 q, b' [1 m
[4 {, ^9 V: {& i5 U$ n' S
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
; b3 K( a2 g% V# Z5 I0 c5 Uset 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% W  z3 p; K/ Z' Qset j
% A7 t0 |2 o- a6 b+ c! G8 d( j + 1)
# V+ N" W: _' v* Z; }
]
. p9 T9 a4 C0 F( f1 q7 U0 I" x- Yset [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 ))% r. }7 n% G  _, o

. x0 ^& u, ^9 u0 w1 w5 d! V
& k, w. R: b: y
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 ~/ ~9 J. v5 k! s0 e% D;;
及时更新il的评价质量的评价
$ `" v, v, W  G* Q. N- sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]  k7 x# [) ?" W" _
set l (l + 1)
# A# D. Q  E- o1 b]
" {7 |: \! f; Q% q) V+ |4 Q. W) D: Oend7 E8 o1 j  B0 N& n
5 Z/ v) m; N" ^
to update-credibility-list9 m% B7 u. Y' t. x' R; S3 b* c
let i 0! g- M) l, F1 u4 _, @; P" d* S
while[i < people]9 i- l# c. F; M+ h
[
2 D1 S% [; K# Mlet j 0# D8 b7 K# l' O8 T; T% B
let note 0
9 i) f2 y# Y+ |% j8 Nlet k 0
( d* i8 P' M$ X' {, u" V$ z. V;;
计作出过评价的邻居节点的数目
- k( z) v: i( nwhile[j < people]/ S  R9 c6 F# X& I  F0 t
[
, h4 s7 {. Z- g/ E3 ]if (item j( [credibility] of turtle (i + 1)) != -1)8 }5 D3 B5 ~8 H
;;
判断是否给本turtle的评价质量做出过评价的节点; {* I" d7 D5 u, i6 ]
[set note (note + item j ([credibility]of turtle (i + 1)))4 A1 M( E  L. w$ }- T8 P3 k
;;*(exp (-(people - 2)))/(people - 2))]

7 n' H6 ?. h. Tset k (k + 1)
; x  E: q& w6 y3 w1 ]  c]; U1 e2 P* s) |2 p& k$ x" i( r4 q  U0 q
set j (j + 1)6 p+ @6 G& h# y, E  [  r
]( _; }  Q( V$ ^4 G4 J$ {
set note (note *(exp (- (1 / k)))/ k)( V8 K) D. Q% m0 Y8 T3 [
set credibility-list (replace-item i credibility-list note)* p" D- _" H( @1 Z
set i (i + 1): o; ]8 H: P2 n( o$ m, o
]
3 h" n2 ]$ o( V7 P- e; qend- Y/ F3 I1 Q. q( ]1 A

& d- A  E  V  h" w6 P5 Kto update-global-reputation-list
6 ~, o1 O( d, P8 z5 t" E' Alet j 0$ x4 W2 }% g* h0 [6 m
while[j < people]- L6 O; C4 }7 T% o: \
[- S+ w! p+ l6 v! {* n
let new 0
7 [+ o. r; G: n0 x;;
暂存新的一个全局声誉5 q7 C0 B# h9 w2 A% m
let i 0
! c! D- _" W( o2 j# C6 Alet sum-money 0* V+ y, t4 y% K4 S- H, ?
let credibility-money 0
3 t& [5 X7 b) r( ~while [i < people], d" i# @1 q" @* A6 V
[
' W/ _: k& o+ u  c/ N/ E  C% G& Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- h* }% e; i( c, j. a4 p" oset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 O( _: c( u7 o+ }: ?( Q$ C
set i (i + 1)2 F0 p+ d7 v  E" s* o3 p
]
! N7 Q9 a! {+ qlet k 01 c4 X6 t7 V' L4 X* W
let new1 0
9 g: F! u, p$ G+ {6 l. Fwhile [k < people]
% @9 U. n8 x, ]2 d: T3 o: `3 I[
  {0 H. K% |; s0 i% y* D- q8 \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)
$ t1 g( j" t- R% {set k (k + 1)+ B+ n9 f3 u+ l/ L! d
]' c7 g$ Q2 Y9 ^7 C; f. x5 R) s5 b
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; o0 _1 r8 P  ^9 f2 s6 p
set global-reputation-list (replace-item j global-reputation-list new)
' A' Q9 b3 @# G# h$ L  jset j (j + 1). j  k; L, b. R/ c8 @4 g* V
]7 w; v% d& j! M- D! p
end
$ z* C9 n$ b( y  }
6 E# J6 l0 Y0 U9 m0 L: n; @* ^6 {8 W
2 @4 W# u9 |: ?
to get-color
" s4 |( {0 d. E
8 N$ z0 P  _5 G  T* P3 e" ^! jset color blue

0 r- g4 I( j2 H2 Bend
$ s( ^# e& N& ]3 L" W; [! C3 S. ]  E. Z
( v. V1 P, x1 ~/ \to poll-class
$ j$ P- f2 [9 b- u8 ~3 p, d- Q) j0 Kend
, J0 Z, X, m' [2 r& b1 D- }
; O$ y( T: ^* q0 }- Z  Q3 v- Nto setup-plot14 K& _* M6 U4 v

0 P4 T; g4 _2 Sset-current-plot "Trends-of-Local-reputation"
8 Z9 ?) z( k$ I! h
6 E! U+ @9 B% `2 h4 i
set-plot-x-range 0 xmax

  F! _! S% K, C  Y, L& B  z
& c: P* D2 w; m4 qset-plot-y-range 0.0 ymax
1 }+ p3 G; e" l" g) m9 p3 c9 ~
end
3 L+ Y  q6 g  ?2 }& A/ F. M7 m
! G1 S) v* U$ X! Hto setup-plot2
" [# o! G9 @2 J% u4 o, U/ [+ ~7 K3 _  H3 [8 f- {; v
set-current-plot "Trends-of-global-reputation"

& M! J- g$ u, E. K, h+ U9 S: Z, g3 |( s& X, J' j$ l
set-plot-x-range 0 xmax

# z: }$ x8 ^/ R/ {% b9 p
. X& y: Z; v  F9 y3 C1 ]# f& ]set-plot-y-range 0.0 ymax
* v; D3 c8 b( F5 K% p0 r
end, N  I0 \$ Z( c8 I* |& e
1 L( v( i' N- a! }) M3 v3 J
to setup-plot3
& ^; Z) P9 `+ m6 K1 O' ^9 x& o) Q4 F, l; p
set-current-plot "Trends-of-credibility"
5 i; t# t& w& B( Q3 x

% H% Q  F* m( ^8 v- l+ t8 oset-plot-x-range 0 xmax
  o! e+ c6 u5 r; ?, x/ @
$ T, y7 ]( h2 Y$ G4 `
set-plot-y-range 0.0 ymax
$ b" d, P4 y0 z% R; S$ W. Z! |
end5 R, b: @/ E3 g

- e: X7 B5 [& D) i2 |- yto do-plots
5 s; B# R2 Z. E0 C1 k9 Yset-current-plot "Trends-of-Local-reputation"
: C, I  ^" S. P! c2 k+ L0 Cset-current-plot-pen "Honest service"% U1 o$ T0 b: A
end; \  ]5 g5 p' ?
0 s4 H2 p4 J* t- d* }1 S, I
[ 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.' j2 ], \2 O5 y7 h
2 x3 s  Q3 ^3 d) B# o, V
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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