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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:
: P& `& E3 z- C- L# Bto do-business + t* E4 Z8 i. m! n( h  o) `- r
rt random 360! x9 F/ E! W8 j/ `( m
fd 1
# @# x$ M/ A8 r& _' C ifelse(other turtles-here != nobody)[
0 d8 M; k/ S' A. K9 H8 ], U" N9 U   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.
" e6 M# A8 I  N   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    : i, x1 ^9 k/ s/ i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( ~1 P% w# G! F1 l0 U0 a- B* |   set [trade-record-one-len] of self length [trade-record-one] of self
/ m! d6 v" s0 O' d   set trade-record-current( list (timer) (random money-upper-limit)); ^6 S/ w- @8 k4 X

- L4 \$ m7 j4 e+ I, x问题的提示如下:
& z- O: k5 N5 e
1 K% P2 M; a$ w$ J% L. }error while turtle 50 running OF in procedure DO-BUSINESS
) T6 k( S1 p! T; e1 Q  called by procedure GO+ r0 t  U5 J9 N) q/ S; v$ _! B* t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 P# t" h% W" ^  U: @8 s, J+ t0 F
(halted running of go)4 J+ [# N' U) L

5 y6 \2 o6 G& R' \这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
8 d. Y* o; V& C3 D5 T9 L; e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& v; X- R3 ?5 L5 J& i$ d, V
globals[  r/ P7 Y1 V8 m1 H  y0 O; E
xmax
3 s1 k  T5 L4 X, X$ hymax3 |( h8 |5 @0 Q, m+ k: F0 n$ ]
global-reputation-list
. S. @; @+ y- d( @8 ^6 h. |  H
" u! M" }6 i8 |2 ~1 T' g: R) @$ g;;
每一个turtle的全局声誉都存在此LIST- g6 B* G- X) T+ D/ e! {
credibility-list
+ l# F: H! A4 q( Y9 D5 Z5 P;;
每一个turtle的评价可信度
+ }6 G' W+ A8 s  {9 `honest-service0 S6 Y5 ~9 E: R, s+ s
unhonest-service
- H9 y  ]9 P1 r$ h  moscillation0 S6 ]3 o9 G( ]* ~* A7 C% L/ z  G5 U% \8 _
rand-dynamic# u4 ]- J/ }) [# X7 [1 [3 P& o
]! I0 b, x' k& F7 J; K
/ g( t9 F% r; O2 x0 k5 u+ o3 a
turtles-own[+ j+ g1 u3 Z& l; x/ L' t! J
trade-record-all5 G# m( t% g$ B; {+ T3 R$ n1 b
;;a list of lists,
trade-record-one组成2 b3 E" d$ S) c. ], @$ o8 v9 M
trade-record-one4 G& \  \4 n, O/ n! f! V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ e9 I: D; w) {. @9 f! t) x, Q6 M# X3 r% d2 i' ]. ^& H
;;[
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]]# A/ n2 n7 _# a5 r1 z% N, 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]
6 {7 _/ E6 T) w0 q" Lcredibility-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. W0 B' i/ c3 e0 i5 i8 K
neighbor-total
, [7 E9 K+ k! ]. Y;;
记录该turtle的邻居节点的数目
/ ?9 Y' f+ I  `2 m% Etrade-time
7 B; D2 m+ a% D8 C5 C$ X;;
当前发生交易的turtle的交易时间
0 ^& M/ B! ~5 M7 s  j; R6 v6 Vappraise-give3 f- r; R  B6 e
;;
当前发生交易时给出的评价
* m& e6 U" q/ o4 h: z# Qappraise-receive
* Y; h7 a# ?, ]" U9 s6 g;;
当前发生交易时收到的评价
  [/ w) p, I3 I, Q5 t. H& Lappraise-time+ w" V5 t# L' x* ]6 ~3 p- o
;;
当前发生交易时的评价时间
, S; F% H6 h& T4 t/ r( G, W5 Llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
0 T; y& s) K! v1 I. q' gtrade-times-total5 b" I! ^4 z9 d; Z9 S' o
;;
与当前turtle的交易总次数
0 N  ~( K6 S% c8 ^* }, strade-money-total5 f, F. d- a0 J- a7 W, j4 W3 q- b
;;
与当前turtle的交易总金额; R/ G$ j/ w; t! U/ I) |
local-reputation
' _  t9 m! z1 _6 M# `: T$ e4 sglobal-reputation5 B* h4 F! ]1 i" l. ?8 ]
credibility5 K2 [( `* z& ^; `$ [9 y6 C- C5 B  p
;;
评价可信度,每次交易后都需要更新
$ [8 ]6 v* P+ `- T  C; l9 @credibility-all
4 Q2 Q+ P) M# K/ B, O2 v- q4 R/ k6 c;;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
' Z$ p, N8 B) q6 n+ v+ `. y! S$ ], l/ i$ F3 [8 P6 J5 Y* q
;;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
4 x# v4 I* K: p6 P  Rcredibility-one
$ V4 X1 F" ]& _" K" H, ^7 [: n;;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! ^; G9 O' ~% Q2 N, E6 T0 Z
global-proportion
# `5 s1 H' v" @customer
8 u; G  F# _' b. M) _/ y- _7 i+ Pcustomer-no
0 p: i$ U7 c( |9 X: o) T) Atrust-ok
9 |0 N+ t5 a$ I# Ctrade-record-one-len;;trade-record-one的长度
8 @6 E' m; N8 b+ }]( ~9 ?, P7 m4 D" x

# B" |2 F' w/ `: g;;setup procedure1 g& b( X. _3 M* T

1 u3 W  o% U9 K1 _$ N! s7 Gto setup$ q- t9 s- [; l& ~/ @! K. ?
3 s8 W1 I7 k  }  L8 t% O
ca

) n4 [$ W& Q, Y4 N$ L
( [' E, H/ [0 n; B0 t. binitialize-settings

! G& r, S3 q9 ^- [+ _, _3 H
+ v% g. ]  N3 Z! o6 P9 Mcrt people [setup-turtles]
, X  O6 I: Q0 q; Q8 C, h  G2 z. Z
; u( e& S' {  D7 l& v4 A
reset-timer

9 ]; L) c" D6 g) S* c
  Q1 z' q1 W  s2 C- F# Lpoll-class
% L% o' |0 K  _: J; e- g2 b# A$ r+ D
( C0 z2 \, L& a" |# \5 K
setup-plots

+ W2 w" x5 {: l% A+ _0 x% C$ H, s7 v7 X
do-plots
: s! o6 d+ r5 }2 u& s( g  [
end
7 P% U6 P$ Z$ K7 g. m" V2 j. f/ D/ i7 q6 u
to initialize-settings+ D% u  E5 g$ |2 f: K5 L: P

9 ?( a# u3 g7 Cset global-reputation-list []
8 h  H4 I& D- v

4 g$ u3 N$ V  r) [set credibility-list n-values people [0.5]
2 H6 }' P+ T. c8 B, J1 C3 \* L
9 Q! y# e" v- T  c4 J: X7 F! d
set honest-service 0
8 Z4 R& e; ~8 j" Q, }. \1 ]

/ |: O1 H3 ]3 v. xset unhonest-service 0

7 j7 t# L& |. A0 U% o
$ k4 c' ]% d% o% z2 B4 f' {9 ~set oscillation 0

7 p' t' O2 K3 U' N$ G; |( |% c
, u4 L  x3 \7 nset rand-dynamic 0

8 U, j& m2 \% }( q8 Nend
2 A0 h6 J8 O$ ]# J2 u  n
( h6 H6 U. ]/ F: Bto setup-turtles 4 d8 E2 m8 b1 a' ?; H; d' m. S
set shape "person": M$ S  X$ `9 H0 D
setxy random-xcor random-ycor4 ^# @5 l; F+ X& ]6 s6 t( [9 G( X2 B
set trade-record-one []
7 n% e8 o( _) R% Y9 ~8 T
) f9 V( o9 k- @) e6 ^
set trade-record-all n-values people [(list (? + 1) 0 0)] % H* _5 ~+ F2 x2 [' N2 V

1 f# ?( R. j$ h' n/ C/ k  gset trade-record-current []
4 n0 q1 o" q. g0 e: \# uset credibility-receive []
+ W" _+ d2 d, n, f$ sset local-reputation 0.5/ p5 I" n; i1 L/ o" Z
set neighbor-total 0
' a* C  M" H& {: d/ z) w9 P$ v4 q$ N7 n2 Mset trade-times-total 06 \( y' Y. @0 z  Q+ t+ c' ~2 f. V2 U; K
set trade-money-total 0
& [/ H7 l' G+ v. ?; D& yset customer nobody# ]" I% ]9 L+ f% r
set credibility-all n-values people [creat-credibility]2 E$ R3 M+ b9 T' _' X' o
set credibility n-values people [-1]0 ?- Y/ k2 g! ^1 o: d* \; E
get-color
, m+ ~# ~# q  S! ~% G# Q8 K; N- v' H! |/ L
/ z; R5 m( s0 L3 Q7 E
end
/ s! g% F) L, x% T! g
4 e3 K; C: ]" S: X, k: I0 j4 Vto-report creat-credibility  b$ B2 _1 @0 S! i9 H! U
report n-values people [0.5]# w  R0 |4 `% h$ z* t# A8 S! |8 g1 \  p- w
end
! g& T9 h% ?; X  ~/ ~
5 |' G2 R8 d- Bto setup-plots# i+ k- R( l$ n

  a, ?! Q9 [$ U8 g- X2 Dset xmax 30

  o' U1 M- Z, H' @9 v. ?( Q
. y+ H3 f5 U& ^+ d& j4 Rset ymax 1.0
( X$ `! Y9 M9 x: }! |. Y- ~
. ]$ L6 [6 U& [" p: W
clear-all-plots

- _, ^. e$ ^# D$ j- W
2 O" b! A3 |) D5 R- m% T& T2 ^setup-plot1

) K! U5 b% A' \! Z" N1 p0 c1 W- q2 k! Z
setup-plot2

( y$ B0 u8 \" k/ z+ b$ i% W- ~1 c/ q, ^' H9 ]
setup-plot3

( o- U0 X2 z5 Q# B/ B( r" r5 hend
/ }- d# Z+ `, l4 r) W: S; l3 G
0 m9 ]) ?5 p6 d: M# D" P2 ^7 t. U& ~+ u;;run time procedures" I" N  ]9 s7 y; y# r* |3 f

. K& Y7 ^+ M4 Q* b! d( X8 Oto go
7 M& Z% l) J* e* P( |% R3 s( ]5 X: k1 e" S) E. a" m  l% h
ask turtles [do-business]

9 u: m# B3 j3 Y* h5 i0 |end  S' @9 J6 i6 \+ N! `) a

# t2 q, {# [8 ato do-business
) L1 ^, A/ C! B+ ]; N3 e$ P9 t0 b
: H' ~- P- y" T+ y! j

) z0 q$ c6 A0 _9 o9 A/ zrt random 360

4 f* G5 D5 S3 Z
  K' z9 x* r+ q, ^fd 1
; ~1 Z$ `5 c# \' Z1 e
( h1 ?9 p! ?" O: }+ Z; Y
ifelse(other turtles-here != nobody)[

( e1 d5 @& L! ^+ a( S: D, S+ G, c, r8 a( s1 B
set customer one-of other turtles-here
) h$ M7 ?1 X* r/ o1 k- I

0 h& M- C5 w6 z;; set [customer] of customer myself

7 J. e% Z0 F& m- @8 P% b0 y& K) J9 Z9 M7 T6 a8 t
set [trade-record-one] of self item (([who] of customer) - 1)
9 s% l6 _9 E$ Z; w0 @& b" Z# @[trade-record-all]of self9 O( i. ]. g+ p4 S" v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! P* {* {7 Y+ x! Y; }  W0 ]$ U
+ W6 _! }8 I$ T/ W) x/ B
set [trade-record-one] of customer item (([who] of self) - 1)$ |# i: Z, q$ J! ~. o& D) K! m
[trade-record-all]of customer

5 P0 ?- w  o7 j$ y$ {8 G# ^; V$ h2 |6 T- R: G' X9 k
set [trade-record-one-len] of self length [trade-record-one] of self
* j. y. `: v7 U$ A. m$ F, V1 Q
/ }8 D7 r& u0 w' ?
set trade-record-current( list (timer) (random money-upper-limit))

: ^( D0 ^4 t# [% Y& B9 d* D; \% w7 G* B. s+ y. Y' ?6 ]
ask self [do-trust]' t* c: t& o0 ?
;;
先求ij的信任度/ ]# |6 Z. r  x6 ~: y1 z1 N$ y

% o$ _% [8 |$ w+ ]3 e4 t2 ~4 b  Nif ([trust-ok] of self)/ u3 k+ K: k( @' H4 O
;;
根据ij的信任度来决定是否与j进行交易[
: N& d9 q- B* P" c" s5 f3 Vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  n' Y: `1 r; D3 r0 O- o4 U! b; [6 l! c% d) H* i6 K
[
' u0 o: c5 t9 l; l2 S6 v
6 v  V) P& [$ Y' \
do-trade
$ x7 `  \. j4 U  `' t& ^( e) m
2 o6 H2 Q9 w) r
update-credibility-ijl
, C% P: P: ~" J# _
# G1 V- r+ T; B; I. B2 R! L, u
update-credibility-list: K: i9 U1 I% U$ q
. n. w, r0 ]- k' b
* F- Z& u& L: B: q
update-global-reputation-list
* A9 P+ D1 U5 U+ n- Z

9 V- K6 T! W  qpoll-class
9 K0 v5 ^6 P& o4 |# p, O

. f6 K. R5 l9 r+ X  b. U$ ?0 E5 }0 Z2 i% Aget-color

8 V, T3 w3 f! I4 c2 a' V' m
+ n# f& v9 c/ O- X# o$ c! g: T]]" a9 d; f0 P0 ^4 Q# E& g
% j: G. o+ E: L2 B& R7 j& `
;;
如果所得的信任度满足条件,则进行交易. ~( r( D) N' V; m* {

6 V- U) b. w& b& X[

: n7 h- y$ }- u$ S2 I- ^
7 {+ ?0 l$ ~+ a7 w6 ert random 360

' c" M- J1 l4 l0 @# E5 z3 J/ g
9 I' {% q+ b4 V& k7 _" nfd 1

0 B, V. S2 \1 [8 M9 v7 z# @
0 R+ k& i4 R6 S0 d" I4 e]
# G) l, y: o6 A% N
$ ^& D$ c) u! ?" Y( u+ T1 o
end
9 c# X# M- O- s
* F9 @; m8 Q: q& u$ }/ |/ _1 I
to do-trust
  s5 x1 H9 Y) G9 x3 Yset trust-ok False0 y) x, b- n4 g* P7 x2 ~

+ L2 D& N9 [2 P; s+ @
+ H/ Z/ m* u) T" y8 Q
let max-trade-times 0
4 T5 x# D) a. x3 r/ M0 nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* K. C( U7 F7 m8 f- nlet max-trade-money 0+ J! F6 Q" A  v: d0 A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& M" ^4 w  G1 x% U  \. P
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 W- g, H/ o, J$ u
: L$ I8 I5 f: T1 M) N. w0 F
3 x. i9 B; A0 g. T1 x" L: q/ N
get-global-proportion
( p+ i1 C' |; S, V1 C8 slet trust-value+ f- I5 G5 ^7 K% X1 Q& Y9 ]' x2 _* d
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)
) r: K; A( D, C) \0 Z; f/ ]
if(trust-value > trade-trust-value)
5 ^5 n: I& P5 t$ @2 c[set trust-ok true]- T$ Z7 y: i- @. U9 I
end
3 X$ G5 n0 I4 L
9 ]) u/ u1 x6 t& dto get-global-proportion2 ~4 r3 K' P! I' u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" D0 i% h' h' H  u3 K5 r' P
[set global-proportion 0]9 K( F. K! x2 O) T/ W$ u
[let i 00 \- t+ F( q, {/ q+ t( U
let sum-money 0% Q. i/ F: B/ S
while[ i < people]6 P7 J! H& r" U+ Q! ~2 c+ E) e- B
[
: |7 ?5 {$ z* J( n) {; `3 Q, I$ ^if( length (item i
- b3 Y. ?6 \  X0 P( a; o2 O[trade-record-all] of customer) > 3 )
, N7 A3 C# B3 ^8 t) G" x5 B
[  f0 d9 K6 f7 J- G' t& s
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: H  i; \: L& A, }]4 t7 S5 d: {5 ~8 {, }
]
& ?" r; u' q( e+ Y$ ~let j 03 ~8 N% U; B0 Y4 S# J4 s4 n8 x0 O
let note 0( H, t7 ^& X0 t* |" s6 Q
while[ j < people]
0 M/ m$ |: ~5 q6 a. Y/ c) @. S[
! Q( p, R; u4 v( t" x4 b% T: xif( length (item i
* y: w* u$ \" c3 ?+ |+ f. r6 U+ j[trade-record-all] of customer) > 3 )

5 ^- \/ P, v1 e! w[
& @. F/ ^, F5 c# T, H# P% a4 bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 Y8 x! J" h0 ]5 f$ C. V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. C( r. v$ k( ?" b0 F0 @* N
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& C* ]6 f7 h# B' {  \]
" p5 k8 [, z  @! d5 X, G]
* E2 N+ N! L( |% y7 r9 o2 lset global-proportion note6 G4 n3 t1 A5 `% m6 \6 r! ^
]
2 A, x% R8 h- J7 ^end
% j+ \4 X2 e! q- L9 k" C% N( P9 [# l; T; u: u) @
to do-trade
$ _8 N0 v2 Z/ S' ~, r1 j" R/ m) g;;
这个过程实际上是给双方作出评价的过程
& _. R* o( N& V1 }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* u+ [/ F  w. L; Q8 h& R# uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# g" b& h! n: @  Jset trade-record-current lput(timer) trade-record-current
: E) o4 g" C, E;;
评价时间
) l" x4 c, J+ u% C8 lask myself [
! L; q8 [4 v: {" G1 Iupdate-local-reputation1 r) q8 N, T4 d9 x' i' M* o! c; l* A
set trade-record-current lput([local-reputation] of myself) trade-record-current
4 Q* x9 B9 R! G& H1 a; J' G]1 A0 a( n0 o* X. E8 w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 p- V) J4 S# @, R, K2 [
;;
将此次交易的记录加入到trade-record-one
9 M9 [2 o5 E8 X$ _& hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 G/ S, S7 R( a* ulet note (item 2 trade-record-current )
0 N3 w9 `+ M4 g8 m; o* H) h1 rset trade-record-current
- B5 B4 @1 v( i8 w(replace-item 2 trade-record-current (item 3 trade-record-current))

4 u% k! Q  y# z7 ]5 zset trade-record-current
% I1 d4 f  ~$ W6 ?2 S8 v, v(replace-item 3 trade-record-current note)7 n: P# C3 I6 F

6 W' `1 J3 s2 I7 a. E& Y  b4 J

6 d% M7 @) Y, \' T; [; j: ?ask customer [
) S" R! z- [1 E) zupdate-local-reputation
/ L+ @3 H' p+ {8 X" iset trade-record-current4 Z/ {& V+ g: b. O6 r
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- K/ M7 i$ v6 j/ I3 k# b4 x9 U3 T
]( d' [% J9 x- j) ?. _5 V. H

, `) q& N& j5 e1 z

8 I& A3 b6 G8 P. P4 n8 P( ]" @set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 Q: ~. h$ u# Y. }8 v# n5 G7 |
: l$ G( k0 l1 ^; Z* P, K$ c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! I& M# S  k4 T9 x# X& h, B
;;
将此次交易的记录加入到customertrade-record-all# ^7 W# m; O  \
end  J3 F( L+ q9 h( ?3 ?/ _) r2 g, S6 g
" m3 L2 b; ^# d. L+ [8 @* [
to update-local-reputation) {: Z* [% U$ R: L- ]
set [trade-record-one-len] of myself length [trade-record-one] of myself& ~) f- N! L# o9 @

( X  F* e* W$ ~8 R8 M; O/ [( v7 u' l6 Z0 L, o2 y2 U. t
;;if [trade-record-one-len] of myself > 3
+ D; F9 J3 c$ ^9 i4 w& V
update-neighbor-total
& U, {5 D  }) R+ n! r6 n3 T# j;;
更新邻居节点的数目,在此进行
0 I% \0 S) H1 u+ d, ~let i 36 C' |* y, m6 \/ K: \* O* w
let sum-time 0- O& j7 |& n" `9 P2 Z/ V
while[i < [trade-record-one-len] of myself], U0 Z0 Z- p, @. R
[
5 a/ |3 i6 L9 ~- dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  _  v4 ~& X# b4 [( S5 Tset i
/ h2 V) L% l1 b3 c. {' V  l5 H( i + 1)
  \5 g. v4 C  l( E
]
: s- q  t) K, e2 M4 k8 Alet j 3
2 r. A6 A4 w4 [9 j6 ~) Hlet sum-money 0
; m5 V4 g; W3 d1 k$ _1 [2 swhile[j < [trade-record-one-len] of myself]
3 H4 q! r! H: O8 `( K; x' t[
6 n7 T, @$ W: Sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)3 O; p, V. F$ F$ C8 l9 t2 K$ T
set j
5 h4 K1 g9 ^1 g( \8 D. v1 `( j + 1)
6 Y! v1 o! N& X- e+ p
]
1 }2 z0 _& {* Qlet k 3; e8 Q3 i$ C& v7 o5 s$ L* d2 \
let power 0+ s7 S' L! x8 f# J6 K
let local 0/ K3 j& S& q4 {9 E  ]  K# R0 K
while [k <[trade-record-one-len] of myself]
2 E- x* n+ X" X9 I* m! |[
5 g5 y- g' l9 K& cset 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) ' r  |4 F. M/ f8 q
set k (k + 1). T% L& @% p7 H; Z$ u
]0 h# m/ z, b/ E. q. Z9 C* k
set [local-reputation] of myself (local)
/ ]9 X" T. S# Kend
/ q9 @" V" P# {9 d* V; `/ M- W
2 [: j* w+ K; {$ Lto update-neighbor-total
1 _: V, m  N. O4 I1 s6 J0 J  J; m" e, N1 k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 I* Z7 W& l9 G1 l- a1 m; O6 F" c! d

+ [+ S2 H! a% R
  [. G" q- T9 ~
end
  ^6 N$ P1 S; T5 }' j9 l
" b. e2 F0 @& [" A# j. Y3 dto update-credibility-ijl - `7 p' P8 v' R3 ?% R, @9 g

/ U9 q, N) c4 V2 I' |3 K;;
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。5 |6 h5 v; c- Y: _" a4 S9 d; O
let l 0
- S# v9 P& V7 w! |, A" @9 z9 Z2 Y9 Kwhile[ l < people ]  d6 J% h6 P: C7 F
;;
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
6 a4 C7 ^2 e  |' M* P) e1 ^[3 Z0 p, W, d! L+ t' h2 J* w% v* m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ d; v8 m' }0 U. ~if (trade-record-one-j-l-len > 3)
" o1 ^6 a: l, ^[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
1 n+ }  F2 R9 l3 I$ u+ \% flet i 3
9 {4 j2 `% `4 f* {4 Q4 Ulet sum-time 0
5 a& T( |* C  ^while[i < trade-record-one-len]
& {3 G7 J  p: S& f* l) m. |1 C[# @, a6 p# @2 Z; [. k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )* f( [9 Y1 `2 d; p7 S7 ]7 o# j* ~
set i
% l1 d% }% z- O% W1 j( i + 1)
" C* l, |* f" S3 R5 p
]4 T0 B7 w$ A9 s* G1 ^
let credibility-i-j-l 0
$ Q# S, {0 P" N0 L2 t5 k7 a; O- i;;i
评价(jjl的评价): i0 C4 O- `* Q# B! c5 @
let j 3
$ l& ^% C# u) _" r6 elet k 4. D9 |7 r, H; k# t, q
while[j < trade-record-one-len]3 r5 h! b0 r+ ?. L/ x& \
[
' _1 |  k* o" V3 d2 W: Uwhile [((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" C' ?- m& x! h$ B6 l  L
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)- T. @' j% ]2 D0 X- i
set j. S6 c$ o  Q8 x0 e* |" M0 v
( j + 1)
$ `2 t# c5 y& T1 w  h
]
2 d0 D/ Z8 V+ P' |1 D& m* xset [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 ))
! {2 {9 e8 q2 {  W0 [8 `, }
" A4 M: C' J' R* d

" f1 |5 ?; R2 _$ ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 l% K5 X- l. }/ O8 I) D4 v7 l+ `
;;
及时更新il的评价质量的评价+ v  m5 R9 g* k2 T0 `( M
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
6 o0 Z4 @9 [. [! q; rset l (l + 1)
: S! I. X0 d  _+ B# z5 N- `) F]
4 H6 }6 Y" X! o( `; Wend
4 n3 h1 L7 r7 z* a1 |  s& Z3 i
% C3 i1 O" y+ x2 c2 o+ m- Y0 Qto update-credibility-list
  I. Y9 Q0 g- ^  Q0 t( hlet i 08 Y1 l2 M7 g* t) l3 M; H
while[i < people]8 z8 H8 W) m0 Z! t1 J& c3 i
[
* f. Z9 ]. d& t: X5 J$ [& Blet j 08 b1 H8 K* Q5 Y+ z$ [/ E5 h1 O  R- Y3 K
let note 0
) R4 B' q; l& [6 W" vlet k 0' l1 S( }% S0 A" X
;;
计作出过评价的邻居节点的数目' t2 R, S# S" Q8 y4 ]- _2 f
while[j < people]! t+ z2 m; c6 u& V
[2 r# V+ O6 F( I  K0 h
if (item j( [credibility] of turtle (i + 1)) != -1)
5 u+ c: b7 P, Y7 l$ ];;
判断是否给本turtle的评价质量做出过评价的节点; f! Z# h' _( d  p4 F( Q, G' p
[set note (note + item j ([credibility]of turtle (i + 1)))/ m# a4 {$ u3 h: X" c- d
;;*(exp (-(people - 2)))/(people - 2))]
& t8 h! h1 Y, N9 D
set k (k + 1)
7 w  `/ `) L3 A# P  O' ^]
7 I  W2 D! N# g! \set j (j + 1)) ?  j7 h4 E; O$ P4 J% k
]
4 T% {" H- M3 R- `2 zset note (note *(exp (- (1 / k)))/ k)( X, v( Y8 q0 ^1 }
set credibility-list (replace-item i credibility-list note)
. o9 K0 _& G0 |; N2 j. Gset i (i + 1)+ `, ^. M% r! \) o+ t+ R. J# i
]
; v9 h$ `/ V8 Y& u$ D2 Jend
+ S8 Y" W. x' A; P
1 Z, ^$ D4 H" z" h0 _to update-global-reputation-list* S; b0 W1 u) @. K
let j 0
! ]2 v8 ]- u6 G) s* V/ k( `/ pwhile[j < people]. g. N- o6 O- O; q/ B2 ~2 w" c
[# _, A' v0 }% |; K) n8 i, X
let new 08 }% J: }# P# t, \: b) c7 q
;;
暂存新的一个全局声誉' c, |2 L& N2 l- q
let i 02 X( D7 p; I2 u4 f: S+ {
let sum-money 0
! m% s# z) }. F% p4 j0 ?2 K/ _let credibility-money 03 H8 h2 c6 f) G  d# g5 p/ V. Y
while [i < people]
7 K3 z- T! G7 m# v[7 E- B5 Z/ Q* n8 F0 p, [7 k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 N4 d) Z% N$ B$ f) N* c5 L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
/ `2 }: q4 }4 Sset i (i + 1)+ i3 n. B  w$ ]& n7 v* \8 o' P+ s
]8 i& ^2 P% m) \% S1 R
let k 0
4 h6 d$ l+ F5 J" b5 Qlet new1 05 }/ ?2 ^* O/ F. e: ]  o2 \
while [k < people]6 a. T" H6 A; ~1 Y; `) `
[, P+ x2 x1 f% j
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)2 {% N  t3 o2 h8 P& [
set k (k + 1)
9 R7 j3 f: C! t" B]' z1 i1 U9 ?9 T
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- K9 j" |  @" O7 O3 mset global-reputation-list (replace-item j global-reputation-list new)# H- M9 H! F# J2 Y
set j (j + 1)
# ?" d2 T9 c% y1 g& L* M]* Z1 c5 n& Z; y) F& G
end5 \- S* i* c* C) w  j
; r! Q7 A, H- D" Y
5 Q, [& }' l! E4 ~& L% U
7 {. j6 H3 i8 ^9 d* z7 D
to get-color) o8 k! C2 n, ?& B
8 {' S- X% b+ X
set color blue
  o9 y8 v% Z* K5 Q0 p1 P
end
+ K' V9 l+ F7 z3 u7 |- H- s* }  h. p
to poll-class
1 q1 \  i0 L2 ]3 Q4 k( }) qend& o6 q3 B7 `4 @1 a1 i7 w

* y) A, R6 h. jto setup-plot17 {; r# c0 y- `

9 w) ~8 ~" j4 W' K/ ^/ j# fset-current-plot "Trends-of-Local-reputation"

4 Q9 {) ^/ {4 y* j, A6 P
2 l' Q/ p, \" {: J) s" f5 w& n5 Uset-plot-x-range 0 xmax

8 T: o& U% S4 m$ C8 a4 `' f9 [, {2 i
! X/ w) t% ^1 P& a3 Pset-plot-y-range 0.0 ymax

+ O$ E* A4 j2 e# O1 k* Xend7 m) q# m" h; Z7 ^& z

# i1 @) Q( I3 b% }to setup-plot2; A  a8 A; s; V3 u4 D1 Q, _$ C
+ }8 \/ x% F( X  S2 I; u
set-current-plot "Trends-of-global-reputation"

2 s; D1 ^' g$ I$ Z8 s
: S4 S/ s- c* S, i8 _! s8 P  Qset-plot-x-range 0 xmax

: Z1 g2 \; M$ c) J
( B* \0 t, w3 y& T3 h& D( rset-plot-y-range 0.0 ymax
7 I- T. Q) j; q0 m  d3 l
end4 A6 `! [& C- _4 N/ g
4 T2 Q$ t6 N( m4 K% {  [
to setup-plot35 [0 A+ D$ @$ f. b' L  `# d1 [3 \4 k
7 l5 N- ^* ?/ @! F( }
set-current-plot "Trends-of-credibility"
  B& Q% k; J; O8 C2 C- y
! X1 `) W, v4 S! X1 y
set-plot-x-range 0 xmax
8 i2 G; U0 B& {1 ]& z1 C' J

$ ]' @8 H) L  i" N- Rset-plot-y-range 0.0 ymax

2 E) }; }* s" t6 Z- v  zend
% ~% M+ O1 {0 d, F; z
  X& y% Y  {" x; g/ A2 nto do-plots
- ]* F, l' ~$ `% v. r- fset-current-plot "Trends-of-Local-reputation"
: x( s: N6 n8 S  i) c, yset-current-plot-pen "Honest service"( ], L, r& A0 w  O  v) E
end
/ b8 S0 t. Y. w" q8 k* l7 I
) j, `$ p+ T- d/ D+ [: L[ 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.
/ V0 k  W2 ^$ L- c' V4 n& ]; A
8 f4 k* z( `% b$ B# g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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