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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:5 w/ q) s0 O( m# r9 z! ~+ A8 i
to do-business
9 O7 \1 k( H2 v/ d; K- C rt random 360: z. `, K9 k: z
fd 1
. |9 ]8 u+ a% J6 ? ifelse(other turtles-here != nobody)[& T4 e' x% F0 C
   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.% Q6 W- W4 q* K* z: L: n5 `
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ s4 X, @4 Q- a( g0 q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  F& y5 ~- s+ o" F6 ~! l/ Q! ^
   set [trade-record-one-len] of self length [trade-record-one] of self+ \0 y; M; ]' m9 ^" t% _
   set trade-record-current( list (timer) (random money-upper-limit)). V$ ?, h1 S& H; f

' I( u0 s, I+ h; H9 C9 @问题的提示如下:: X, ~: c+ T1 L/ v& [; ?
" ~5 [0 w- z. ]3 o: U- W" G! \% b
error while turtle 50 running OF in procedure DO-BUSINESS/ m" v+ B- T* F  a3 n+ T
  called by procedure GO
5 @' V: R7 O8 k& q: `+ HOF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ V: b1 }! {' N- [3 j
(halted running of go)' [# a7 W' Y7 A$ a; o

. v" `# Q( R& w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~~- h$ c' g: o0 _5 w5 i
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
) N, g2 j( G* H! W& b* y1 k8 uglobals[
* u5 N- b5 u2 r2 Zxmax
8 Y, ~( J8 l8 P0 v- H5 @" }ymax
: |) B& R) c$ Pglobal-reputation-list1 U5 ^( K9 u+ g) r) m7 p$ u
* y! f  D+ v1 L
;;
每一个turtle的全局声誉都存在此LIST- [' _+ t* \; ?  d! g
credibility-list
1 l, D* V; ^% T1 u& B. b;;
每一个turtle的评价可信度
# c8 j1 r8 f# Z( F1 k" A5 lhonest-service1 v. w, v! {4 n( p. j9 @
unhonest-service1 x% y* u  J7 k
oscillation: m8 m% S- d. }! W! `; z
rand-dynamic
2 k6 O2 w+ Z8 X! x5 Y$ x6 s# b]
/ s; B. `  o6 x
- R  {* M! d1 z. Q2 U/ i% Pturtles-own[5 ^: `- v, v0 c; N, g+ e( L
trade-record-all
% @+ m' n8 m% K# }+ L5 u( V; F" ^- |;;a list of lists,
trade-record-one组成7 y" S# h# {' P1 a) A  B  A( o
trade-record-one% @( Y1 R) W+ o9 W2 j
;;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 K( R2 @7 l% C1 W% x& L, u- M) S/ T0 I$ ?! J& a
;;[
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]]) e" O+ n: A2 R( T  c
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]
% y* A& n6 `. ?, I4 H. U+ jcredibility-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
+ C9 H7 D; f: q8 v- M" `! q3 c2 vneighbor-total
' b* W0 i2 O3 l- ?+ Q;;
记录该turtle的邻居节点的数目# H5 T% h) G) _8 Q8 {" T+ u
trade-time! ^- A0 S9 @! K. ?. `& U
;;
当前发生交易的turtle的交易时间
/ S$ O/ M' |3 w! Z! happraise-give
3 M& a" Z% r5 Y! t1 f$ p( `. E5 C;;
当前发生交易时给出的评价; H3 ~8 l" ^- Y* e4 j1 r' D
appraise-receive
2 \+ \: D% Y% M1 ?4 M;;
当前发生交易时收到的评价: j! s% C# z# {; A/ P) M- D. }: {
appraise-time
% L6 V* \2 a+ s/ g  N! t2 G;;
当前发生交易时的评价时间
% o9 H7 y/ U3 \. l7 y4 d% }local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" P  d2 ^1 p) ~; B; m3 ^: Itrade-times-total
5 ~9 a) O  I) j+ S+ h' m1 W;;
与当前turtle的交易总次数
4 j- X! U% Z6 f; ]0 ~trade-money-total
" w6 X. _) F7 O& c$ O- ?( S;;
与当前turtle的交易总金额
1 A& z+ B/ \+ w4 u7 a7 K; }3 Mlocal-reputation
* e- Z6 ?, X. Cglobal-reputation* k" b1 p# `( d: T
credibility
5 }- J& f+ g0 L3 l  W) X;;
评价可信度,每次交易后都需要更新/ i9 k+ e9 p8 H, B) E
credibility-all9 K/ A# K! L; L4 S1 V
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
/ i3 I8 i1 }* o* D- V
7 H: _# I6 |5 U5 |, p* S;;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
! i3 G2 d- F1 ]9 Scredibility-one
0 _% z0 q5 [- U! G1 c5 Q;;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
1 T# [0 r9 E, rglobal-proportion
  R( a/ m4 f) M% M- _customer
4 a+ v/ s/ o. lcustomer-no
/ l( t: u) z8 a- X3 W7 rtrust-ok
$ @2 h2 F. ~; p! b/ Ftrade-record-one-len;;trade-record-one的长度
" m# J; t( W) A" p/ C  l]! [& [/ V) r. x& o

7 x1 z1 e! W0 h5 s. d- g' |;;setup procedure
8 I0 u0 S0 `, g$ l  O8 c/ e. Q8 d* N0 r) k$ t1 F2 R
to setup5 K& i, ?; k& j) X; Y- Q

) m2 _  L# e( D3 ^4 Y+ U- `ca

% i. ~" K& N/ \3 W0 r/ [+ Q6 ^: X8 c
initialize-settings

8 E2 v4 b% |- s" t3 {2 U+ u
" [4 A6 h" `& t% o) z/ S7 `" ?$ x6 ecrt people [setup-turtles]
( J2 T# w- e& y% }6 _4 q( \

9 e+ q- A# m0 G1 ]6 O( N6 c; H( f& b2 Preset-timer

! O* X& m, W8 ~; b$ J7 Z1 e. H) F- c; G2 f  g# h& D# J% Q
poll-class

5 O" m5 m2 [( v0 W6 k+ N( \
' O& m& p9 V! d+ Vsetup-plots
7 r& q# y2 T9 N9 I5 P; p

; ?! [8 _0 r4 ^3 x# [* n- wdo-plots
0 f! `  \, L$ ]% Q/ L% l& Y, q* R# k  m
end
7 A: G5 ]# Z! I& M+ ^! r- C, H7 p+ T" b, A
to initialize-settings
% R! I" n4 Q% r7 V3 ^  B" |! L; @: I
set global-reputation-list []
+ X" _. X* J2 p3 d; r+ E

7 I. g$ }6 Q6 i7 rset credibility-list n-values people [0.5]
  c) a3 L( N' s  f" K5 m

+ B4 w4 D# P0 D# o, [set honest-service 0
( Q: p3 B9 u# d! N
9 h0 Z$ e' Z; w& w8 s- y
set unhonest-service 0
% |( L8 G% Y1 d0 S) o' C
8 O% g) w# Y7 Q% _5 E3 s
set oscillation 0

% N, {0 g; ], H% l: G: C
. G9 b2 h$ g+ P/ xset rand-dynamic 0

: ?6 \1 k" h/ A/ N( qend" P& x. {; Y3 \+ R% ], S2 w

% b( Q7 }( T$ ^6 w8 l( r6 Tto setup-turtles + o  O6 n% s8 h
set shape "person"/ R* \7 ~) A2 f6 W' g5 z% N
setxy random-xcor random-ycor
9 J4 k% G; S* Pset trade-record-one []
, {+ u0 U! `) Y
* K1 U  v+ o  u( U2 \9 J8 F
set trade-record-all n-values people [(list (? + 1) 0 0)]
  g2 x# c! D3 A. t

9 }9 K( @+ x% N  [& Zset trade-record-current []
) F8 h- R: o% ]# _set credibility-receive []8 i/ A+ w2 {  b0 E! x! `
set local-reputation 0.5' v' n. C4 c' A; m7 a5 ]
set neighbor-total 0
! f# g, c. s5 F3 Uset trade-times-total 0
; M6 U' c3 c) U3 n$ x" e* fset trade-money-total 0; m2 v' l$ N# h% S
set customer nobody
; |4 I% c9 y0 g) I3 d1 \set credibility-all n-values people [creat-credibility]
( G# @4 p1 V% Z  L- A1 Y/ Dset credibility n-values people [-1]" e. a1 C$ ^2 f9 r
get-color& o$ ]& e( j, ]5 W, z
, q! |: B' K5 w; i
end
7 `& E3 Y4 }( P5 _* i$ {6 H; _/ {5 X/ J+ d
to-report creat-credibility4 B! M. M' O. x% p, o
report n-values people [0.5]  q8 z- O& c) A# w) Q8 i
end
& ^9 g! U5 J2 R0 X0 R4 J, ?" P* D* q( w* N4 Z. \7 n( y: V$ a4 k; G4 G
to setup-plots
2 A% X6 a0 K9 O+ F4 f7 C# i% r& q4 U$ j; O
set xmax 30

, {; }4 ^3 |! j+ Q7 x
0 g% K, S1 \% {* vset ymax 1.0

6 [( w" {9 L9 _/ l1 z6 m5 [0 J' F3 Q5 P
clear-all-plots

6 m, |6 l4 m! q0 f9 s  F& l0 H  Z% ]2 v9 J6 u
setup-plot1

: y5 ~; p1 R0 {( u( k, L
, V) P; D# T  l0 r, D$ g% msetup-plot2

- J' U: T1 z9 }3 b& {3 ]
( G0 H9 ~% j! Nsetup-plot3

* }7 S  @% x/ [" o9 [4 Pend& y3 [% U0 J+ f4 r2 p
1 B; @0 T3 w  F3 F( E1 K
;;run time procedures
0 Z2 u* ]; j. \, S. [
  u2 P2 e) c! [9 q7 x$ G* d5 s' bto go
2 V, X2 Z6 r# k' J1 |6 m
, ]8 w7 H( u& d* @6 l! Hask turtles [do-business]

! O* G  G3 `9 s, qend- M  @, W/ ]7 F2 J/ ^& B

1 D8 m% H; w$ b: G4 z6 }to do-business
2 L3 f+ G, Y! j

* Z$ j' W2 u% T- O5 S1 V- v6 |: @
rt random 360

' I( r8 L- C9 \0 M+ R: l1 E
* v6 H% J$ z/ q, f6 r0 G, ]fd 1
9 X8 i. n5 t/ F
6 s5 @% t/ \; F5 }4 `
ifelse(other turtles-here != nobody)[
- P4 J9 k/ S# @4 `% ^' S
: Q( X* W. D& h# B% U
set customer one-of other turtles-here
9 A- `8 x( H2 `0 D' @. j
- E) K; F2 E. \: a2 ]
;; set [customer] of customer myself
$ x5 E! Y; w$ k4 D2 E

4 |/ G0 A+ x' |# c1 I9 Vset [trade-record-one] of self item (([who] of customer) - 1)
& i8 r# P4 b6 |" l/ l2 B5 v[trade-record-all]of self6 V# G' x6 u  S3 ^) Z" P4 h: Y6 f
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 d8 o- H7 _5 f% I3 u5 E2 m4 ]
5 v5 t' _+ L6 p8 V/ P* z) B' \- T3 Oset [trade-record-one] of customer item (([who] of self) - 1)/ ~: O  ?. R6 x8 w
[trade-record-all]of customer
+ O* T; G  n. m. p5 m: j

% _: ~  C8 o! }& }0 n, [set [trade-record-one-len] of self length [trade-record-one] of self

; E8 p, h% R/ U% u5 K
) l0 o8 k1 \6 @* ]  Q! t; G% dset trade-record-current( list (timer) (random money-upper-limit))
; Y* _3 w6 y/ G& B& Z) j* o
. A+ @' S- M! O6 q; i( P
ask self [do-trust]
5 H, D: Z3 X2 \' c0 i- m- b;;
先求ij的信任度
/ X* }; z" Y: l/ T) F% y! C  ~. U
/ F. m& t5 w" r0 ^( u2 Y9 q, Yif ([trust-ok] of self)* c% z0 x6 z" P+ r1 p0 v" T+ r" V, V
;;
根据ij的信任度来决定是否与j进行交易[
/ i) j" B5 j1 ?* q4 `2 L1 g7 pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 c- }4 ?" r7 `" R

& t! R% T% r$ F5 H# K) _; p6 V[
  x( o) x- s3 f+ V* K5 c1 A
  a0 x. }' ]( p
do-trade

4 s$ b3 G# J& _4 d: P7 e* n: K7 r2 Q) f& L& [
update-credibility-ijl

  a8 h) }* I$ x$ X& Z4 P* b+ T3 ~8 M7 b# k& t$ k( t  f3 z
update-credibility-list9 {; ]2 H: H: M

; i. x% Q0 V9 Y' }5 R7 e* T
. g/ n/ R, i3 r9 ^/ i) Fupdate-global-reputation-list
' R( n; F5 ?- {2 x) G/ ~+ ^0 Y. ~

! j% t/ u5 O1 ^; x+ v$ V! rpoll-class
7 s1 x4 W" G- f) C) B  O" H
2 o2 @7 H5 y  ~- K# ?
get-color

, F( X( d3 E& K; J1 B0 l. W6 N; B$ D
]]
0 |# b( U# B+ g4 P/ c0 h7 m$ e
- W+ r5 W- X1 g1 S1 R;;
如果所得的信任度满足条件,则进行交易# Z2 k" T1 o1 v& a" q4 @5 h
" n. S2 f, C' f! r
[
4 s% [' I: Q. \

, E3 L# C4 b% ]: B3 U& f# ]) Crt random 360

3 m. y$ D! e4 V2 ?7 T, H* _* [. S* p# r
fd 1
" `! I, ]; t  n+ r8 Z9 v

3 h) [7 k# {2 l) A; U]

8 r$ _. n) C/ {# c7 m1 k# q9 P2 R$ e' I5 ^, ^$ K  e0 k- V; |
end

' n# N, E1 a9 W# g- N+ E  T( r5 M- Z  b
to do-trust 2 J4 \# s6 T, k- ?
set trust-ok False+ J& ~  u5 q9 _+ r

# J& V% e$ R8 _, b. \/ ^5 m
' H" w2 U8 w, U2 W( u* Y( |5 z
let max-trade-times 0& T* d: W0 K: J+ T* J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 T  b7 G/ q* X0 e
let max-trade-money 0. \/ J- y) {3 t  N9 Q$ B# g4 P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
) Y/ x/ Z9 P7 ?* tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 Z+ N) i- d- R/ U

' R4 v  }& X9 X

4 u+ f1 `+ {( q( i4 bget-global-proportion
/ _: u6 b' m4 c. o8 H  [let trust-value
; v* {  k7 p! Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 r+ H5 y1 m' c0 K- K$ ^; iif(trust-value > trade-trust-value)
6 X. V* U; `4 o) P* C- a[set trust-ok true]
: S+ e% Y7 X% e1 t8 [8 z, yend
6 c, i% |( M( @' q3 h9 N4 J8 G7 y" i, G2 ]7 X. [
to get-global-proportion" W8 m2 l4 h$ f' X, x
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); e* q8 ~- V+ ]& B# k* J
[set global-proportion 0]
) u: x7 ?1 `1 T" h! V[let i 0
8 Y- V5 o, h+ q2 M- Elet sum-money 0
2 `' z0 \4 ~: Y/ Q8 ^while[ i < people]3 C' ^) V( k+ b/ c6 X, I5 m  i
[
% [3 Y% S! ]% |" aif( length (item i6 Q) `: c/ s& y( h  l' h; L, m% k
[trade-record-all] of customer) > 3 )
* \/ Z; Q& Q. n
[: Q( k. i0 Z8 @, ?+ {: o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)); b7 l* }0 Q- f& }! Y
]
' [1 y9 W. ]& f]9 [+ F& V+ L2 h. |& s* E' U
let j 0( }/ ?% U7 n9 i
let note 0
0 i% Q2 j5 h" m+ h# c7 |' X0 wwhile[ j < people]2 y6 Z5 m) U) L( B
[
2 U! w% Z$ Z, `) l$ m* sif( length (item i
: @! v" |! E1 }' ^3 t, f[trade-record-all] of customer) > 3 )
9 r) P( i  ?% V( s% E6 M
[
' a- ~# P9 t! e( h9 Y. B% }ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. @; W7 `3 e* M2 @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 i- l# o& {' u! n' g[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ \7 N) a3 ^7 _9 V5 |5 |# f
]
' U' V4 N- m( D8 c& S# T! G]  I/ t# I6 G7 ?9 v: n( w( @
set global-proportion note; d6 H/ [6 \6 ]( F& b, t
]' E: n3 u5 |& i6 ]# @8 i
end
/ V  e' \  J) n& m, y/ Z) ^, G$ }$ [+ M- S, Y
to do-trade
; ~7 P* P9 k* W" C  r9 Z4 K, W;;
这个过程实际上是给双方作出评价的过程
  \) I$ Y$ S7 a7 m* ]# cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! J. o: ~7 I( v2 T# _' W/ \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价4 f! S, G$ J) U
set trade-record-current lput(timer) trade-record-current5 i3 Q: g7 h6 ^( _) r6 G# V% j8 o6 h3 ^
;;
评价时间% h  F( x! @; f1 m2 H
ask myself [
1 C% |8 g% \) tupdate-local-reputation; w1 [9 ~- j( }! @: m
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 y  k6 q8 C. k]
7 ]+ V: K9 F3 G. b+ O8 c7 Y" v3 Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; j% ~% r7 k" U& ]3 h- ?; w3 W
;;
将此次交易的记录加入到trade-record-one7 Q* P0 b6 z# `( O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), m/ N4 P1 z' q$ x  O6 T
let note (item 2 trade-record-current )
8 L5 b2 _8 }" ?; N$ Dset trade-record-current) ?% ^3 G( ]( O
(replace-item 2 trade-record-current (item 3 trade-record-current))

. i+ c7 d+ Z- ^2 h6 A+ C+ `4 `set trade-record-current3 I# ]! ^# m* S9 v
(replace-item 3 trade-record-current note)
+ |9 a+ Z3 |1 Q; W) a+ B, O  k2 B' m3 c' A: J9 [* q
! N* A1 U8 \/ \+ x- q. s- S0 g
ask customer [' P% c0 C% I8 U0 `$ V  h8 T" ?5 U
update-local-reputation
4 m0 }4 [1 j$ Y% ^set trade-record-current. Q  C, Y0 F: H. l9 m3 p1 Q4 k. h
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, q* P* D, l7 ~0 [- o4 H]7 C4 _  H' r! D) {* }. N

/ A  ?% p* }8 W# V* q' v1 v) v

! j) S7 ]5 x, e" y# c0 H0 Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer, S( \/ T! G. ^/ T

+ [$ x9 ~) X8 ^0 pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
: @' p0 Z8 A( {( [. h, j9 J;;
将此次交易的记录加入到customertrade-record-all, K+ A  N1 B; @6 G+ l
end, `" f! s: l1 n" a- I& ?. f

/ }2 D5 T" L% b& Gto update-local-reputation
) R2 T( J" h& N# h$ B  Bset [trade-record-one-len] of myself length [trade-record-one] of myself2 i) N0 J7 Y/ S, Z! o

: Q! E% b+ ?+ Z% _* O8 c
; {6 U& j( h) i; h8 {3 E;;if [trade-record-one-len] of myself > 3

' ?# \# n  s( rupdate-neighbor-total
8 _  z: X& k: x4 B( T$ O% Y;;
更新邻居节点的数目,在此进行( j; Q1 r# y1 ^) n4 b% v5 [4 N: d+ E
let i 3
% X) r! J! Y; O4 k$ b6 Alet sum-time 0  L( G* a% @& |, u
while[i < [trade-record-one-len] of myself]) O: m' I, b+ \2 K- h- m' \4 d3 A
[
8 C/ p8 E* n' v* J1 _% A9 Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), f/ P/ H+ ]( t, i+ d
set i3 X( V6 C3 s6 c+ E
( i + 1)
& Q8 a( a! j* Q7 d# K* n7 T
]( P9 g; k2 V8 J: S
let j 3
' X  l- j! y7 slet sum-money 0- h/ C3 L' j. C' Z- w
while[j < [trade-record-one-len] of myself]
+ V3 L% d) V- t  _+ Z[9 Y9 l! \( v) I2 x) K6 n+ K6 f
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)- Y3 U" u& d- ~- N
set j2 E8 u4 |( P4 W6 ^- n/ b! P, }- h
( j + 1)
5 z3 K6 Q4 e5 r5 q8 ^( O* {
]* K1 d" C8 o. C1 T; H
let k 3
( c, a& I6 E: h& }let power 0
/ {5 X! S/ M5 N% _1 f7 B, Qlet local 0% E$ _# Z8 m3 N
while [k <[trade-record-one-len] of myself], t5 Z3 U- D! o
[
0 u6 C7 g  P1 r7 h) ]. v" I4 Hset 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)
( C" F5 i& [* T: L6 oset k (k + 1)6 o9 ~% S1 s7 `. |
]
4 L$ W% A0 B9 _! J5 Y4 ?set [local-reputation] of myself (local)
! V+ ?! Q9 H' G% c. h6 N5 v+ gend
% S( _% }: Z. b5 p# W$ \( V: z# c! _  T" g& P1 N$ T
to update-neighbor-total& T7 ^# c' e( B' E. h
, A% J$ K4 P  s7 h* ~6 d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 L; l4 i% s/ w' y3 W! _* J
6 n# D, s4 L# l

  t8 _. X# L& z5 Xend
8 z9 C4 G' o9 Z# K
% \# ]; ?- K3 S3 |  C& Z/ }7 M( T# {to update-credibility-ijl
6 S9 o- I$ y1 }" x; F; w" {2 c) C' F
;;
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。% J3 u- ?  c6 n5 Y6 z, F  s
let l 0
" W: S+ r) n" Q) i5 @while[ l < people ]
+ B% }9 X8 f  M1 Z5 };;
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
8 z9 s: `7 Q" j) `* _[( w! a: I. T, n* Y4 q, u' @0 ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% l9 r" z0 i& J' i2 v$ S  |
if (trade-record-one-j-l-len > 3)
- X/ J9 m4 T. h2 i4 o9 N2 [1 F[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
! Q1 b) A% p  E2 \0 b& K  Ulet i 34 d  |# A/ ?% a. H0 l
let sum-time 0) k+ G, x5 ?1 j- N+ I1 y
while[i < trade-record-one-len]% c7 T9 |0 R! p* _5 T
[
; i2 v8 O7 e; X& |( n0 Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- O5 w; W0 e9 z3 ~0 ]/ a
set i
- @; t% d& E3 T; w- b9 g, ~3 c/ h( i + 1)
+ W! F8 O5 U- `: Q2 I/ i
]$ E, n2 c: ~% m+ B
let credibility-i-j-l 0, g/ c6 c7 z1 E) |# @
;;i
评价(jjl的评价). L' b" X# d3 o5 F* y8 F
let j 3% ]$ M! c- o9 a* K/ b! F% T. E% I
let k 4
" z/ h  l$ r" u7 d( \while[j < trade-record-one-len]& H; `: k. A5 N  ]6 Y- c
[
* _. W$ s# {: t  i/ mwhile [((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 ]% N  L! F: w- t2 t( x+ h. Sset 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)0 P( m* {. e0 A2 U0 y3 i. S; ~  ^
set j# Z( b3 k4 v3 {- u& J
( j + 1)
3 a/ V2 U6 s3 T7 J/ A' _2 \. i
]- \1 @' H6 T4 W5 Q; ^
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
5 y$ r4 N9 l0 \  ]4 l. @) `3 d& Z8 M- e& u
, u& x8 k2 H, N+ z/ T, T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). }/ v1 K5 ~9 Z0 e2 b
;;
及时更新il的评价质量的评价
$ H- V% b+ M8 ~3 D; nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* {9 P% C0 |/ y  I& D4 Q6 Q4 z4 lset l (l + 1)+ f! C6 i. \. o1 Y; u
]+ P  b, z. U% B% W( I
end
! T4 A3 F( h$ b- \" l! e
3 F8 u0 l) b, A( ]to update-credibility-list9 o6 ~, z. h1 F  X! q
let i 0
! A5 e- T* U" ]2 Y/ r: d2 Wwhile[i < people]9 c7 x# Q% c/ ~# |+ m' Z" I
[8 v# m# h; H7 Q* z4 d2 p# a* n! S
let j 0
' l* \; e! y+ \/ Hlet note 0; ~) }8 C  r8 h1 [8 f* O4 n5 f9 s
let k 0, `- T( ?: K- _* ]0 Y% Y( u0 J
;;
计作出过评价的邻居节点的数目  E) U/ ^5 B1 L0 l' o; b, [
while[j < people]
7 S1 H! m$ t1 v% k[& y- ~$ B( m6 T0 E5 K2 M: ?. [
if (item j( [credibility] of turtle (i + 1)) != -1)
3 a. u  V* |. D% P! Y1 A, r;;
判断是否给本turtle的评价质量做出过评价的节点
1 b" |7 g" N" G, n% v[set note (note + item j ([credibility]of turtle (i + 1)))
7 T3 e1 V) g" Q;;*(exp (-(people - 2)))/(people - 2))]
! m0 i  ^' d2 t9 x+ S* L) p% r
set k (k + 1)
& z, H+ z- x, i2 j/ `" L/ j# z% A]. n6 i$ K' q/ O6 P
set j (j + 1)
. N+ ]) X. T6 U6 s, w) J]
3 C+ G$ r0 k8 s% \( [2 U4 Sset note (note *(exp (- (1 / k)))/ k)
  H( c2 [3 L6 V! S# b$ N4 c) Rset credibility-list (replace-item i credibility-list note)
+ l8 k3 C0 V# P$ D2 N% r& xset i (i + 1)5 o! _6 B: @6 G) w6 _* X) h% z
]
0 v4 O2 D7 @: \7 aend* B2 ^9 L3 L: D0 P0 {$ `/ D
8 I2 n2 B; `5 o& u% |6 C( s, Q
to update-global-reputation-list, R/ _: m' x& p# c- U# I
let j 0
0 r. B% \( M. F$ \while[j < people]8 x: z: Y2 b& i) ]( a! n( L' ]2 z1 n
[2 B- p' k: Y+ i
let new 08 \+ t9 {# e9 r6 Y& o) a: R
;;
暂存新的一个全局声誉
) D# i% ^! v, o: a" z  x8 nlet i 0
3 }  o% ~5 ]' A: g* Flet sum-money 0; l4 G4 K  G7 O% u* r" f
let credibility-money 0
" l0 R# g' n/ xwhile [i < people]
  z% D& E% L0 g- J" w[2 u1 D# P. t; `  R# y$ k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
& W2 q% K4 y4 Z! E7 |$ xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 j, Q5 l- n6 r% Z  b# ~
set i (i + 1)
3 p. T+ W5 T8 k! j( v. i+ O]
+ ?$ l6 O5 a2 K$ Y; dlet k 0  O. [! ~$ X2 \* {3 u* B  `
let new1 0
* u  K, N/ {+ o2 m; V( l3 B. xwhile [k < people]7 M( C- G1 P+ |. ?
[
" m9 Y& _) P; `0 Vset 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)" ]( r) c5 [- m# _: k, f7 M
set k (k + 1)
' G# E0 d( N5 D' |3 I3 u: }]
& h) d  P* O- N* x2 {set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # {4 d# L: f# f
set global-reputation-list (replace-item j global-reputation-list new)
+ C$ S0 r. v( W" b4 S$ k! W5 uset j (j + 1)
6 @4 r3 m/ {) P1 Q' D3 Z  m0 w]
2 b$ x( j/ }1 x( b7 u" Uend2 f/ l. r( v# O9 f
$ X6 {  i3 m& T: ]
( |5 \; ]: K7 G6 O8 G
: P5 @& l# x5 ]0 @  Q- M/ j
to get-color
. t/ Q" i! S, `5 E7 s  Q" j8 R% [1 k$ |& Z; H+ x5 }: ~/ R8 l# Y. e
set color blue
  N/ P# M' b: G' s& m
end
$ m& _! j& b$ q2 z9 ]2 o. ]$ o9 t# J( C" A# u0 p$ C
to poll-class
- Q9 c' m2 M% G, y0 Q3 v5 _8 v, hend8 g! d  h( U4 }

$ ]6 E- c& p# p+ M0 {& [to setup-plot1) P8 S% I5 Y# E7 K

) H: b+ B2 @! \( N# Fset-current-plot "Trends-of-Local-reputation"
2 q' z' e1 S6 T- y, ^/ T

$ h  o' x3 M/ M* x. sset-plot-x-range 0 xmax

. @( {; Q+ \2 U, \6 G
4 \( A; b+ P- B4 D& @. [set-plot-y-range 0.0 ymax

" z9 g6 d" E( c4 T$ {end
9 ?1 u( ?1 V2 b  l
, T! O4 W$ V! {8 Dto setup-plot25 ^; R- U/ n0 r* N- J$ l' e
  X9 m; u+ T3 t7 ]. }  A- N" h
set-current-plot "Trends-of-global-reputation"
3 v) T: q1 _( H5 D4 e+ }& J( O! e
" H$ K3 G$ `. `8 Y+ x
set-plot-x-range 0 xmax

6 D+ s$ _& C9 K1 J. ]5 B+ F7 N7 w
5 L7 B+ L$ `: \# L1 wset-plot-y-range 0.0 ymax
  I  P) t2 G. C1 r' N  a
end
  u7 w9 n$ O8 C( v- e
4 F. G0 [  h* V8 l! W& Y  Ato setup-plot3/ L# t6 i3 t5 j8 E$ `% {5 U. q* W6 M

1 v. O, @- ?) n8 b3 e2 {2 y/ _  ?% U" lset-current-plot "Trends-of-credibility"
6 c7 V$ K2 H8 F8 Z, O: `

, M3 x4 z* `- ^set-plot-x-range 0 xmax
' c3 A3 A/ T$ \7 J1 |

, M; o4 o# z. g+ }# mset-plot-y-range 0.0 ymax

7 b' D9 L0 u% V; f) B% fend; _; F6 A7 H+ |* w. {+ \& o: L
; l' s, `9 K) \% n% {8 U
to do-plots
1 h. J5 X- y. `% y# B" Sset-current-plot "Trends-of-Local-reputation"6 j2 n2 G( Z8 L8 R
set-current-plot-pen "Honest service"2 W0 _3 l% _9 i9 W% C. y5 b) f. W& a
end
& c, E9 d) a7 i& W# Z
; ^* F' M: [! B: ?# N1 `[ 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./ z( r8 a0 V. a7 W

5 z' Q+ P0 Y7 b( X5 g: h) m' ]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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