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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:& m" z1 K  H: b  e
to do-business
" e3 L# p( Z* {/ c2 p; u; d3 Q' m rt random 360
8 |" b9 ?: n& \$ L$ Y8 m& O fd 18 n) K1 Y$ i2 v. i
ifelse(other turtles-here != nobody)[" K# ^  z3 A# e" @" Q9 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.3 k1 {6 x3 Z6 r0 u5 M9 q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! P4 e: S) z! E8 B4 ^) I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ |: \! j) H# K% R4 G* c% v; H   set [trade-record-one-len] of self length [trade-record-one] of self
" E% ^6 \8 r" V1 S6 J   set trade-record-current( list (timer) (random money-upper-limit))& L0 t* N4 O7 x9 J; \+ t5 m

3 W% l+ U& q8 r( s% b8 q问题的提示如下:
8 U: s: V$ Q0 @/ W; r% A$ g8 Y
1 m/ ?& W' ^2 r  Kerror while turtle 50 running OF in procedure DO-BUSINESS
/ z) M7 x0 V; W& y2 C- q5 \  called by procedure GO
9 [/ Q6 Y  p/ X( B7 H" sOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 ~& W0 N: a- o
(halted running of go)
4 G% k3 {1 o5 U
& M& m. S. t9 h  l7 [' s6 `- |  ^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~~
, B( N" |6 J( B8 L+ S0 ?4 z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
  [; L3 m4 A8 Q* X4 y% B/ v3 ?# U( kglobals[+ V/ T% X& L2 v# T5 I3 o" f5 n
xmax
$ ~) o# g- [3 ^9 _' @7 F2 Hymax
+ c" e' k8 N7 W! I1 iglobal-reputation-list
4 i( v& N% Q; d+ K, @; L. O
4 {# B8 z2 m$ p2 q8 {, Y;;
每一个turtle的全局声誉都存在此LIST
: v2 R! ^6 n& K6 k' H2 r7 hcredibility-list
4 n4 ^9 J' n! z/ `* B5 Q1 b0 @;;
每一个turtle的评价可信度+ ]- \* ]! R- U8 R  V3 A% m
honest-service0 `  d# \) C8 l0 W  |; _( N
unhonest-service: k& t* Y. T( x% P6 u2 o% ]! G
oscillation
. F; S3 Z4 m6 r- g! O/ xrand-dynamic) h  a; h8 @: j( x
]
6 O0 U' W$ h; `. i4 U% T$ b7 }! P4 r+ }$ n4 w
turtles-own[
8 f* j6 `; X$ Ytrade-record-all/ W! f2 I3 d' y# S& S6 ~% v! F
;;a list of lists,
trade-record-one组成/ I8 U& f9 C6 x7 ~: f& u& q" {2 M: @3 x
trade-record-one6 g. E  Z: }3 }4 h2 O
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
7 Z' s; |% V. u; A1 q: C; a; ~+ [; H2 z: q! }7 U7 C6 _
;;[
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]]
6 U' G2 A+ ]; Rtrade-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]
: }1 z$ k& x1 C1 D3 `5 ecredibility-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
2 z6 }& f0 a# K  ~4 e1 Fneighbor-total
. P! S2 }( _* A; |/ W& T;;
记录该turtle的邻居节点的数目
% q7 B) V0 H" r+ ktrade-time
. R# ^; j2 C' f- K;;
当前发生交易的turtle的交易时间
  I/ H4 l  {8 L' z/ j1 g' Eappraise-give
% A) L, k0 @" D  _- j# k6 f( Z2 d;;
当前发生交易时给出的评价# q4 q  y5 [4 I  J* ~" x
appraise-receive
9 }, U% z$ s) u2 |;;
当前发生交易时收到的评价
" ~& V1 e% Y9 Cappraise-time
- L4 s# x* \9 @- \% f# c( |;;
当前发生交易时的评价时间
9 Z; H3 N0 f" E) l9 y0 h# @1 }# olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 G, }, X) a5 i% Ttrade-times-total  `% W8 s+ ~8 P
;;
与当前turtle的交易总次数
3 |5 s: n* ^4 c2 D! ^6 Strade-money-total. V2 S4 q: }& v7 r
;;
与当前turtle的交易总金额
3 }( U  b9 j  ^; |/ W  plocal-reputation
8 v7 y- M4 v6 m; u) E8 xglobal-reputation
0 f0 f! k# y7 M& t/ Y9 icredibility
6 W( L& t7 r4 S% G;;
评价可信度,每次交易后都需要更新
$ |* I4 V# E! E3 f) M+ F' ~credibility-all
2 ]- w, A3 [& k6 j0 u: N;;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
* p5 e. ^7 F) _5 t$ k
- \0 Z* N# o* T2 X: x; H$ `* k& [5 `;;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+ T. q8 R9 [. w
credibility-one
" `/ N) X' V/ B2 i! m+ ]( f;;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people0 \$ e7 ~, }% n) s; c
global-proportion
' g: |# {5 W4 a  Bcustomer1 d  W' u  J, t2 Z8 `
customer-no
1 M  n& m6 i# u8 [$ M  c* {4 ttrust-ok- h5 u" o6 x5 f1 ?0 Q6 ]! F/ Z
trade-record-one-len;;trade-record-one的长度$ U. Q- b* z- h& d
]
: ]1 g' S# F( k4 K8 D- m& A$ o5 N
7 |4 [* J+ _8 {( |" m/ [' c8 ];;setup procedure
- @! T6 b( q2 n/ [! @
: J* V5 I5 d- s7 P; qto setup
- V: V4 @# ]2 B( f0 @) h# i6 ^0 C2 K5 Z1 ?0 L4 w9 k7 C  i& v
ca
+ {) g' R$ d- S0 ~% O" m
3 P7 U- g9 p! T
initialize-settings

; c& i- ^9 f! \& [- ^, P: z* }2 o$ m+ I2 z; K! t- u- [
crt people [setup-turtles]
  [6 `0 t0 I3 K& e3 T- E

/ e: O9 c8 K6 f( a3 u' u, mreset-timer

: F  k/ P2 q0 D8 s* S( [
. v. D6 k/ o2 ?4 Q/ K" kpoll-class
' H- F8 V& e1 G" S. A% E# l

/ R- }0 J. \1 Y+ z0 Wsetup-plots
4 ?, Y1 e: r. b+ F% Z

! D* n) b. \$ S! p& gdo-plots

7 D8 i; D9 F& {5 X/ D* P  y& Iend7 `* b6 I* h7 c
3 {9 w; z0 x# y! e) E
to initialize-settings* n* s+ X8 f+ M' [: d
2 b0 H9 l) W# B' c7 u
set global-reputation-list []
$ s. }2 b5 S& q; W

0 H2 @0 o  o1 G+ U  M/ @set credibility-list n-values people [0.5]
; T& P+ s& T% V. j
! E- ~7 K5 a. x
set honest-service 0

, R2 S2 B& e, _4 _$ V7 q' q) W# b7 n( r3 ?& ?& K2 u
set unhonest-service 0

9 t. w' y7 ?4 S+ Y$ w/ @9 Q8 b3 s; B( c% ~5 }7 m
set oscillation 0

1 A3 E" o0 U: {
! ^$ i& ~: A) G% i3 x5 c$ Tset rand-dynamic 0

1 R) P- H7 D8 J6 ?! v8 \end( l5 ~6 B# ^: e4 r6 ?5 Q2 O8 [. O

5 p2 e$ b* ~1 X  g5 V9 }( f' ~to setup-turtles % l9 i( x; D" [; ~4 z4 Y6 J
set shape "person"
; b' f8 N2 [! G& I( Xsetxy random-xcor random-ycor
: F6 H$ q( U, J( X0 Oset trade-record-one []
; D+ a3 h' u0 W. ^, w

/ C. l7 `- F- t; Zset trade-record-all n-values people [(list (? + 1) 0 0)] # c, R! {7 k/ Y( k) {- |) V
* R$ E$ @3 h+ N2 y6 |# s
set trade-record-current []' m3 j' Y: G6 }" y# v7 k
set credibility-receive []
& k% B" _# q2 R9 _$ L6 iset local-reputation 0.5
- t3 A* z% ^+ Q6 Dset neighbor-total 0
0 l- ^/ w% N# q$ W, e$ Rset trade-times-total 0
" x( P$ \* a, j0 A3 j/ B6 cset trade-money-total 0
4 D) E: o3 S6 k- b1 ?! A% Nset customer nobody; K/ I1 N: O  B. b( ]4 f
set credibility-all n-values people [creat-credibility]
( l4 X+ c3 w$ j" T4 Aset credibility n-values people [-1]
5 G1 L# S  N  b9 Yget-color5 t$ b" u- i  w$ k( S% c! \

" F' W6 S$ i2 M8 jend# n9 L. x6 I( g& N# b& ]) V
1 [5 I% K# {8 [3 c
to-report creat-credibility
& r. I, O" g- D; e# a2 Rreport n-values people [0.5]9 a9 F8 r* t! g+ S
end4 n. j: W* I; M1 D4 w

4 O; z, r' \+ J8 u* ?to setup-plots
1 X1 o) V3 r2 j9 A$ ~
) `% [0 M5 L; Kset xmax 30

( t& j& Y+ U' B  C
* v! Y% e! e4 Y; p7 C6 Nset ymax 1.0
( ]& }0 z: a% K# b! N5 X  {

5 X  d9 k1 {* x- eclear-all-plots
7 k3 U  q6 Q; ^) L

6 t1 H( U) w/ P  o: D5 V6 r: jsetup-plot1

2 {' G) A' I" G% B4 x, g6 ~6 l
# L: _- l3 o- qsetup-plot2

3 q, _! Y1 }$ U) f: P
9 ^, }- j' i" S" u7 H- p5 v: }6 Tsetup-plot3

% @" n* R" l4 \7 s& `) ]: y" a1 cend9 F) Q' T5 V9 }$ D6 k4 W8 n) w

- p0 A' `5 E9 t2 M8 l6 {$ c  ?;;run time procedures
( s; M8 y( }" R
5 J2 T$ ~& I/ }  s7 R& S9 b1 V3 cto go
/ @! g) u; L" f$ J9 Y( T2 e# z
( h7 W- u9 Z# A6 i9 D$ u8 ?0 rask turtles [do-business]
; @" {8 W  S3 @0 a, n! S$ x
end
6 h6 a5 R. K1 Z2 i6 F5 `
5 y3 A8 [% x# U" E7 |) @. m0 mto do-business % C( C! b, c: J6 b; r9 G
# U/ @, i* ~! l
5 C: U3 }& s" n( p& e/ K7 t/ ?" s
rt random 360

4 q6 }8 @' z# W* ?  }' {/ J) t6 N5 G" N, y
fd 1
9 j/ x& h* \/ f5 T4 R' P) v  q. q
: C% R2 x9 s2 Z, Q& S6 I4 v# t+ k
ifelse(other turtles-here != nobody)[

3 h5 u! G8 b; R/ \/ m1 m4 G2 ]& |- w9 l
set customer one-of other turtles-here

' h7 v4 T/ Y; P  z: ^; ?* Q3 Y1 z# O+ v, ~4 l
;; set [customer] of customer myself

2 s2 {3 Y: U/ R1 ?$ _
  u9 I$ V0 o$ B' I( L" a" @8 rset [trade-record-one] of self item (([who] of customer) - 1)& c. c, u# ?2 H  n6 M4 p; }
[trade-record-all]of self
, c' p* e, F; N;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 P7 L9 E0 O' y" s- Z" P) M% U
: m9 i+ p9 Q$ i! _# h
set [trade-record-one] of customer item (([who] of self) - 1)
0 I, q  a9 @1 U+ n: X3 x[trade-record-all]of customer
9 Y8 T6 d: j; g5 n" K4 X  \

) G% X/ q- i, d  ]set [trade-record-one-len] of self length [trade-record-one] of self
6 v$ j9 A5 `4 C3 Z4 |2 R

3 A) O4 p2 s2 S" i) G/ r& xset trade-record-current( list (timer) (random money-upper-limit))
& L9 S& Q& R4 Z, d0 O% Y

+ t; E+ l' i. N- U; hask self [do-trust]
4 m* d) ]1 o* u! \" _;;
先求ij的信任度
4 B  ?5 C# i  z0 g) F
1 j9 t' ?, r( w6 Tif ([trust-ok] of self)6 B* C! Y' R7 m/ f8 {
;;
根据ij的信任度来决定是否与j进行交易[
+ N. g, Q: I8 Y& D) O7 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# z6 B2 @1 T/ S4 ?! A8 A

, s. c  a' b) E! ?$ {% }[

* L2 ?0 R' s  L; B+ _5 N- |* m* E5 l
0 q" Q0 \/ f% g) |9 ndo-trade

* @7 b: w# p: x
% y: p8 V8 I! a- H. b( Kupdate-credibility-ijl

' |7 G7 f/ D  f* v; ]
- X6 O) m* C! Y2 K  Rupdate-credibility-list; D1 _2 [3 l5 Y+ f- Q) u
, ^0 m6 K1 T: F6 K$ h

1 J$ T8 E: t* G; @+ Xupdate-global-reputation-list
/ N3 b( @; k- g6 R% o2 C2 P7 v
. }" z( ]4 V& ~7 u2 H, ?2 F$ n/ M: j. |
poll-class
0 ]% e1 p1 v5 Z2 L6 A

* v7 q3 S. F  F: w5 h7 mget-color

1 m, w* H7 l0 u4 K$ d5 f0 c# E+ G# v5 z
]]8 g) m9 R' S( f! z- B- t9 a5 {' v

5 \. i0 J0 N4 [; W) w2 V;;
如果所得的信任度满足条件,则进行交易, \/ V' R4 A, O- _+ r6 ?

. O! K, ^- K! V0 d" [[
6 J- _1 |: U, w: x

+ ?- n6 k# E) {' P7 {rt random 360
2 r# F  j) C+ Q6 e$ k4 ]

, a4 K% m9 f! ?3 y* gfd 1

' Y" d: [) C9 g6 U  I* I
9 @' j# [& x& A]
/ |1 q; y6 B& f
1 x0 J- g1 G7 I( ^* b9 [
end
1 e/ ]( P) I0 H+ p- ]6 C. j
- q& ^( W6 c. N) i
to do-trust
2 U5 H5 b3 c: aset trust-ok False+ L  h& v+ ^" v: Y

( ]- m: ^8 H3 M4 D, d

/ `: L0 p- S2 n4 @4 jlet max-trade-times 0
& ]6 G. K  N) L9 i, Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! m/ s. I2 G* `1 glet max-trade-money 0+ U9 c4 ~% I9 d, f
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 |7 R7 R0 l' l% c. K# h6 [let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 f! Q! F, B& s; q8 l
; c' o$ f" u7 C4 j% C
5 J& A6 E" _) z) @5 _
get-global-proportion
$ ^. h0 k9 c) w2 V6 i! blet trust-value
( O4 {* q) @0 y1 E7 u: ?# Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
; L2 @7 q$ y! b& ?. `1 K6 w
if(trust-value > trade-trust-value)/ E! g" k0 p$ y+ \& B, e
[set trust-ok true]
# o) `4 z; h4 O$ U5 L* Lend
9 }7 R* i1 {# x: g  ~% V& d0 X/ s
  K) m0 I3 L) f6 Eto get-global-proportion
' C% q5 g# R, z0 q8 eifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" y% a; g" B  C! q1 a& `6 D  `+ [
[set global-proportion 0]
0 _! Y# W( H; Z* j' a[let i 0
1 i! V! H9 s- h7 a, S/ nlet sum-money 0" I1 |( T4 F( a* k2 j
while[ i < people]  d1 B; A$ A7 ]! f6 ^) B& N
[
& ?( E) G) a8 Uif( length (item i4 H; j8 L! y, |2 A! l; ^
[trade-record-all] of customer) > 3 )

& b6 t# z) L* A4 m* K[/ T! n: n; P2 C( b, E+ a2 Q9 Y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) V9 `8 R2 K$ f]1 P: x2 r  b: p  t! n& C) K+ w
]
8 E  K) J) v# T8 K2 tlet j 04 D% ?' C2 ~  X" Q( [) A6 h  Y
let note 0. v$ j% S4 [; {" i  A0 @/ ]. X
while[ j < people]
, e, S1 O' u; [$ |[
- T; \% G8 z! R# Iif( length (item i4 A" x% P7 I0 P& a
[trade-record-all] of customer) > 3 )
& k+ w6 d5 [, Z5 s. B2 z1 u8 R. N
[
( F: g6 i9 L4 aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, R& h2 a6 b" u) D[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! a" c: k7 x6 e+ K8 c' o; k( t9 y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ B- _7 ~$ p( h3 o+ P' W# G
]. f5 p# Y, o; K9 Y1 `' I  z& j: U
]+ Z9 ?$ l: ^6 o! A
set global-proportion note
) s3 J; F5 J) ]6 Z. F]/ H7 n7 \& k; m& V
end  V& D) a# V( _% L: G* z! Y5 w0 j
* {! Z: c/ B* W- {' c( V
to do-trade3 ?- f$ B) x; Q% z# l/ I
;;
这个过程实际上是给双方作出评价的过程5 C6 W- v9 v2 c9 f; u8 D0 y4 i
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, [$ h8 e( F% V4 kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) V+ M  o. d# |
set trade-record-current lput(timer) trade-record-current0 [5 [+ t3 R' T, f- q( ]* j
;;
评价时间
; x* Y8 W. i' _$ }; l; mask myself [! q3 }. Q( p% {/ \( y
update-local-reputation2 ?; z- T, {3 Z* b$ a- L8 W
set trade-record-current lput([local-reputation] of myself) trade-record-current. o3 @5 a7 G' p: G$ c: B8 A, q
]
- w' [  d! ]% N8 G9 ?* jset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% B# f# S/ R$ j;;
将此次交易的记录加入到trade-record-one
1 g6 s7 ]' R8 s1 {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); i9 v+ B+ M) q% R$ e9 \& C7 |
let note (item 2 trade-record-current )
1 i( l8 ~' a  t& a! Nset trade-record-current
3 q7 r8 y( W9 X( D(replace-item 2 trade-record-current (item 3 trade-record-current))
5 N6 }$ P0 y5 `# h  a
set trade-record-current
: s' I0 n& L5 Z/ x1 x8 n(replace-item 3 trade-record-current note)
3 A; U. A; _' K
0 F& i4 ~* R. U: n
5 q, K- j1 g# f* @
ask customer [: G5 Y* c1 @/ g- J
update-local-reputation, E$ C/ _& O4 E3 ]
set trade-record-current* [$ r8 a$ a' r9 g7 K! q1 S1 ~  ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ v  w/ D' }8 G) @- F: H1 s, d1 _
]5 j+ I3 D- N( b
9 Z) T& |; s! c( W' T
0 c3 e# o+ m( ]4 Z/ I. b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer9 |8 \2 Z' N, q2 k7 U; Z( |
) _. X0 F& _5 ]  ^, G9 c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- K8 V* K  a" w$ z8 C% T# D
;;
将此次交易的记录加入到customertrade-record-all* Q1 H: A* U7 ~+ Q2 m0 r
end. l: {: ^* |. L; }! ]0 |2 h
+ ]( m4 `4 h. g! {- Z
to update-local-reputation
4 N) V- [* Q0 p2 p/ B- oset [trade-record-one-len] of myself length [trade-record-one] of myself+ S4 \1 E2 d& Y: Z

0 h7 y5 k$ [/ m( s9 L) _8 G: ]8 d7 G9 b  n2 ~" h
;;if [trade-record-one-len] of myself > 3

. N: B  A" [2 ^1 u! U5 i1 Bupdate-neighbor-total4 z7 o3 S& i: i. V) n$ `! p
;;
更新邻居节点的数目,在此进行
( J/ p* `5 a8 i* ulet i 3
& Q0 _8 x6 ?3 Ilet sum-time 0
. G6 B* I7 ^  s: R( E$ U$ bwhile[i < [trade-record-one-len] of myself]2 L: f' n$ [) u
[& f* j" L7 t- c
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
9 \2 G0 u5 Q; Dset i
" d# z: D6 p: l$ \5 _( i + 1)
8 X. I. [7 Y7 u2 S# _
]( g' }! L: P% M: n5 ]% D6 ]
let j 31 B' w3 _, o/ M, L' B# V
let sum-money 0
: S6 j  s: T/ P) z) w9 O$ ]while[j < [trade-record-one-len] of myself]( y! }/ J3 \) O3 N
[
4 h' ~0 y! ]/ C% |- @5 y  _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)3 X( ^3 ]1 i  v! B
set j5 t8 z, U4 _: L7 I& x
( j + 1)

" n% E( p( G: K3 C' s/ g% c]
! R) w0 y! U- t: n. k( Tlet k 3
; p8 `- @3 y- dlet power 0' e% Y  A& S+ n& h8 P5 z! l( p
let local 0
# F- }: D1 Q4 G9 k7 V# D9 J5 iwhile [k <[trade-record-one-len] of myself]
4 ]4 g$ P+ j, b4 ?' \[: O1 p3 ~4 @2 ?( H! U' x
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)   ^" j% C" T- a3 U: p2 p
set k (k + 1)
) @7 d3 x/ S3 D/ y]4 k4 i. |- Y& y
set [local-reputation] of myself (local)2 |  M/ N* e# h9 s7 p
end
3 O9 X3 @' ^$ j8 J7 ^0 m6 g) C' M4 o4 t
to update-neighbor-total0 }$ x8 q2 b1 b8 j2 l) _" c  ^
' a' X3 L9 N7 k* q5 ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
# I9 B# _3 c3 |1 h+ ~. O( v& s- X1 H- B
; i7 `( w' O" T) T1 T, V+ o
end
8 z+ A: y  k" S1 J
# h/ T, Y! _8 Z6 I" q! C8 rto update-credibility-ijl
- ?4 q6 l9 |4 N0 e! j4 V( J6 M5 N- n1 k2 m) l' S
;;
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。
* s+ n  Q. @6 N* Elet l 0
0 m# _# z& f, V2 lwhile[ l < people ]
  k9 P7 ]3 i, n$ d" v;;
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 r2 W$ {* O5 o
[
: H. S7 S, W+ s2 ^- }5 o" Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 q  v. S) A: ^  {! T! x
if (trade-record-one-j-l-len > 3)
4 o( y/ j9 w; `[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
9 u: ~- t! `2 t- x  p4 o. G: Klet i 3! R8 y( ~) D, U- p6 H7 y0 M; h
let sum-time 0
, i7 O  X) |& Ywhile[i < trade-record-one-len]
, c5 `# T' G/ S5 ~% T# s; S[
. V: a/ r" b0 h6 X! O. |5 ~9 vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' x% I% j8 O7 _9 [: u: z0 Oset i9 t0 B7 y1 U* E7 |
( i + 1)

& F% T. j0 |3 m7 N: a- `]! ~( Q8 V- E; ]/ G: f/ S" f
let credibility-i-j-l 0
7 A! }! R) ]: \  ?; D;;i
评价(jjl的评价)
1 x& m/ P+ ]% d) c  @, z$ i  g9 D0 r/ w+ Wlet j 3) U( V4 g5 X. d
let k 4
6 q7 g0 d# h) B) g/ pwhile[j < trade-record-one-len]
/ F7 m3 d. H* B5 C: @+ L& L: A[
+ @  U% ~" P) O  n& F  S. zwhile [((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 c3 m6 S; p% E0 Z2 bset 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)
6 ^; u' ]0 I' U/ \+ |  N' lset j
7 u$ n- t4 J/ J5 F$ y( j + 1)
2 u" f' G, h0 f. l+ O. @
]& W* ]9 A" H5 p1 x
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
1 R  d, u* T( Q' i8 i7 ^4 @- w! R( H/ ?# w$ u2 X8 T
) d, y; T7 T4 q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ G. ]) }9 s% P4 G9 H% g+ d;;
及时更新il的评价质量的评价" W5 n4 l! J# W% f- T& W
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' u+ ^4 ?( h0 {9 f/ P5 o
set l (l + 1)6 H  b7 d* ?5 y5 [% X0 U& ?. Z
]+ X& Z" i, N3 Q5 Z
end
: b  Y$ I& ~/ X) A: V" Y8 R" {! r0 R( L9 H
to update-credibility-list
# g7 H( `" Z+ D; i) alet i 0
' r- V5 f/ H( A  ewhile[i < people]
1 q3 }% T) e9 R4 }; B[; [# ^) G1 j' ]) _
let j 0" S  \7 M' V  C2 G; X# K
let note 0
/ k9 R' o& G6 e3 h+ olet k 07 d5 B/ [, z! l1 O1 T
;;
计作出过评价的邻居节点的数目0 |( m$ n9 d0 Y) d/ E
while[j < people]
' I5 W9 d& U) X, b5 x. F- \[
" g% P/ J& ~* q  gif (item j( [credibility] of turtle (i + 1)) != -1)
3 b1 M6 I; m$ v3 o;;
判断是否给本turtle的评价质量做出过评价的节点
7 |; s2 m5 |( T- G[set note (note + item j ([credibility]of turtle (i + 1)))2 y3 J) ~4 P7 N9 d
;;*(exp (-(people - 2)))/(people - 2))]
. R" s5 g' y# g* q* f4 N
set k (k + 1)- l. P$ {2 G& @
], w3 p- c/ F3 q% R7 [( u
set j (j + 1)
- B- `; L- A$ @7 d- H]8 `+ G! n/ _: j. z3 R
set note (note *(exp (- (1 / k)))/ k)2 ~* Y! K! l1 y# D6 F
set credibility-list (replace-item i credibility-list note)$ s6 Q9 q. q; j9 W9 v
set i (i + 1)
8 X7 W, U% A, [! [# g0 q]5 V  O. ~5 P2 ~+ Y4 x8 q
end1 S8 j  s2 Z/ [
" a5 r5 ^# z5 F5 q" k
to update-global-reputation-list$ e/ a8 ~2 U4 Z- x4 d
let j 0
; ~- R3 @/ h2 p2 M+ }6 x7 Z+ vwhile[j < people]. H8 U" p# ]& H) q4 \
[' M, w( J! A0 {/ i
let new 0
2 F3 Y1 e4 E# }  T' ~3 U;;
暂存新的一个全局声誉4 {  E/ Q$ @6 R' P
let i 0
9 a9 m9 o# ^1 y+ ~2 `( l  Alet sum-money 01 W) B/ B5 N4 b1 v+ H/ a
let credibility-money 0
3 x+ e1 T9 F* l- n8 H4 Kwhile [i < people]& ?$ @) l6 x' \  ]. V$ R* \
[
, K9 d8 _% y& J5 Yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ P3 a: F, g) z( w. `* _  D7 ^set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
. T3 e( J7 Z, C7 }set i (i + 1)2 Z; J% n& H1 L% q4 |5 j4 z4 S
]
3 Z! i/ a+ [  k& {3 x; |& A3 u  ]let k 0
; `$ |4 P# n1 P& q* f7 elet new1 0* j3 O& H1 j$ Q7 b
while [k < people]3 g) Z* N- `) v5 O+ O
[* n! [0 M: n5 d4 a% P
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)
# b8 Z! P  c- b2 n+ [) [set k (k + 1)
3 u. X' L. _  }1 H" W]0 G  }( J7 _! {" C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) p4 u" R( r- P4 e
set global-reputation-list (replace-item j global-reputation-list new)  b* f$ K+ p6 a) a! Z% M# m3 w
set j (j + 1)
0 b' i2 K4 Q0 y7 D/ v3 A]9 `3 n- a, w& j9 O9 ?, y+ ]
end
6 w$ I( e0 W5 \8 _1 G
# G3 r/ p4 w/ H, `* F! Q7 K9 q6 J4 p1 F

# m% N+ `7 ?, G9 y5 rto get-color- z& U. x3 U! [
1 f5 c; Q: H2 d. S5 @5 [7 Z
set color blue
  W9 R2 ~( B: w6 g, Y
end$ x8 L( v  b, K: @
8 E# Z2 h' V% p6 J, L+ ?3 Z
to poll-class
$ g) u' m. e4 N/ F; w7 tend5 p3 t5 m. d: ^  V0 _$ x
. F) [; L$ O- R8 {% Z/ S
to setup-plot1! N5 F  S: i* x; o

/ f& G% E$ s/ l8 U4 uset-current-plot "Trends-of-Local-reputation"

% w- i" \# {9 M( r6 U! A" _! I+ V: D# `; S$ t* P0 t) z$ \
set-plot-x-range 0 xmax
/ `8 P2 H$ Z; Q$ S/ q
2 N% g3 j. m& U# o8 n( A
set-plot-y-range 0.0 ymax

& l3 g* {  L3 b6 @end! _: h) S- ?6 l- J5 b8 G- S3 O# u6 i

7 O) X9 ~. M& P9 }$ V1 f  S! Wto setup-plot2
8 ~" \: y1 z3 l; T4 ~
  \! \# p2 C/ _& q, ^) hset-current-plot "Trends-of-global-reputation"
& ]8 m, m/ {6 Y5 [8 j0 A

0 O2 s4 k" {% Q  Z! bset-plot-x-range 0 xmax
* i, k! K- m. i3 K- [

% p) C) q0 m0 c7 U+ ]2 fset-plot-y-range 0.0 ymax
/ q2 f8 x& t: \3 F% V3 F5 h! G
end- V2 M' s2 t: n8 T3 e

0 W* d# X* q/ Z& m0 I. q8 g& w( bto setup-plot3
/ P0 m& Z. H5 c) w) C8 E$ u% F: A6 l& l$ a' O- Y
set-current-plot "Trends-of-credibility"

! E: y- Y- C. B  q3 b% f
+ g0 ~* a7 X+ p& ~) ], J0 V5 dset-plot-x-range 0 xmax
1 r2 K/ R8 w* s9 V! J
- S# V" m8 K8 \
set-plot-y-range 0.0 ymax

6 ]8 a. _1 M' ]2 t: y4 c- mend: L4 [; n3 n# `  K6 T" [, R

0 `# t" }+ o% ^* b1 ~7 Ito do-plots% x- H* u- Q2 S5 k, Z" A' L' C/ \
set-current-plot "Trends-of-Local-reputation"
5 e# N- I3 Q, T; K' J9 zset-current-plot-pen "Honest service"
2 N# k; o( S' o# r) w$ wend5 x( Y6 ~. J/ U( r. z6 c* W

5 `, U7 a# T5 E[ 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.! U  C; Q3 U5 F2 i2 p# i! K% }6 z
! L- r/ Y4 z6 h; z& K
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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