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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:/ D& r( f* u) R
to do-business
$ ]7 e5 ^6 z2 ?. S rt random 360
2 F0 S% I* ]+ ^8 Z fd 1
8 y* O8 Q. z& R6 N) [" b6 n0 B ifelse(other turtles-here != nobody)[
4 h* I& ?% ?0 j$ u4 @0 B   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.
2 x# O) m" I! K5 V4 ]$ i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 L# \  @/ B& a; n; d+ ?, T   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& j' S4 g0 ~% b: }4 \2 [, w   set [trade-record-one-len] of self length [trade-record-one] of self
7 a' E- e8 q0 i* H   set trade-record-current( list (timer) (random money-upper-limit))- O8 N+ Z  x- b7 F

1 \6 I: Q/ Y# p! g1 \5 r问题的提示如下:% s+ q0 h/ W4 N2 Y3 @" C

* f7 A; W; D: d* [, F" F; kerror while turtle 50 running OF in procedure DO-BUSINESS
2 G- V9 y0 d: ~  i# l9 v6 z  called by procedure GO
% ^+ O* [2 W4 t1 m! b0 m5 H; {OF expected input to be a turtle agentset or turtle but got NOBODY instead.! }& t! J1 a+ Q  y- r
(halted running of go)
( P  k4 Z8 z# ~$ J- A
# t! |$ N4 ^7 [1 ^) ?( Y" _4 Q, a2 G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~~
9 M. j( b! `5 u' U( `2 F3 g0 M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
+ _; X2 ?1 @( M4 W5 @1 sglobals[
" [" D3 J. _3 c- A& [7 @xmax
' R5 H: ~, u7 C  O* i* j: h; Q2 dymax
4 g% G1 }/ j, {( T- Bglobal-reputation-list
# R1 e- O/ s/ H  L; _. p1 n" d9 r: T7 v
;;
每一个turtle的全局声誉都存在此LIST
' w1 A4 ?5 {$ ccredibility-list  M2 w1 e. O* ~% q* @# A
;;
每一个turtle的评价可信度
+ h, A3 m/ N! f4 S' ?honest-service6 ^5 d( y, @$ s) G$ y, Q
unhonest-service
- u. B! W4 X7 p7 ^oscillation/ e. j9 g+ t( ]# n
rand-dynamic
" r. K) M9 [& L8 I( z( F]  i1 i9 S4 b8 l0 K% A2 _1 y

3 y8 S; m7 x- c) H# `' M/ N+ Lturtles-own[7 |) J. C( s' T  O6 S% y/ Q3 [
trade-record-all5 g# p# c' Y% |! I
;;a list of lists,
trade-record-one组成
/ k* W6 x5 f0 F( a1 R+ Z% W# H5 Itrade-record-one
2 x7 J6 E7 n9 [! m;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) a/ x8 ?% e( C7 |3 F
2 g3 B- |' c& r% r( G- 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]]; N* O  X: I; I8 J
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]
& \: H7 W1 u! J6 ycredibility-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
. u! D' l1 Q5 Q9 d7 K% [8 sneighbor-total7 R" N2 p6 d+ G3 l# s5 c2 m' |
;;
记录该turtle的邻居节点的数目( S4 t# G  e9 v, v# `# ^0 g6 m4 A
trade-time
8 `- P- [/ `$ r: c;;
当前发生交易的turtle的交易时间" ~% h, e& M8 C3 a" V5 L9 C
appraise-give
8 ]) a- w) f- Y/ p4 r;;
当前发生交易时给出的评价" ~; u& b0 k$ o4 a9 ^+ j  P
appraise-receive
/ c: T. k* P4 g/ H  C. x% g0 F;;
当前发生交易时收到的评价
% Q9 q, h/ B+ q  Y3 F8 mappraise-time) c! I3 M3 {' ]( g( ]
;;
当前发生交易时的评价时间
. V  C! N8 F1 S. ?3 m$ M1 ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 m. n$ d8 R2 J' [) Btrade-times-total: T' |4 |! w+ _/ K: ]* @) _
;;
与当前turtle的交易总次数
9 }2 }4 v  Z7 [$ x; etrade-money-total
. D' ]% J" ~, y; r$ g$ q;;
与当前turtle的交易总金额0 B4 i! K# L4 w) v9 Q1 L! N" I0 x9 b
local-reputation1 a+ x8 d. Z9 V/ ~
global-reputation
8 Q! u6 E7 n! T2 Y2 Ecredibility9 T0 H8 N& F4 B/ Z: c
;;
评价可信度,每次交易后都需要更新
( R3 ^) o$ |8 E1 E1 ccredibility-all
1 W3 e, R. G/ A;;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
) r" w1 @4 `6 V- W' a
- v5 T+ n2 S0 a+ @7 B5 X;;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
  h. G0 I( o2 M9 k' L7 Jcredibility-one4 c6 ?( E- K3 r, `' I1 a9 `$ w' T
;;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
" u3 P+ r9 W7 S. I$ {/ a! {& d2 aglobal-proportion0 X0 G5 u# |- {- G& q7 [$ d$ ]
customer, Z# k. L9 t' ^
customer-no8 y" ]9 D# X  r5 V" Y9 {7 C( g
trust-ok8 g8 g  N  J; ^
trade-record-one-len;;trade-record-one的长度
8 a2 t: m/ t0 S. y% Y]' Q: E' l9 C2 b0 ]
" r, b% c/ N& F3 J
;;setup procedure$ }& L* M8 L" w0 a
/ K; a8 u0 ~: y5 y- N5 E5 {0 w4 r
to setup" `& c" C1 `; T, h- `1 z2 U
$ ^  P# ?$ |+ f
ca
; `3 E+ M, o/ ?

9 m4 Z7 p* j- g7 q- A  D$ Ginitialize-settings
+ }& o7 g" s) S' z" ?+ _$ @

* f7 V" Z3 _$ |; Acrt people [setup-turtles]
: b* U: s9 {* L$ J% ]4 o

9 |8 W( D& h7 s: Breset-timer
! m' L% V5 V' _1 t5 H1 k) j

3 a- y- M7 u0 S" a& [1 [& V' @  ~poll-class

1 R; r4 h. f) ~6 g* e8 |
- X3 Y- ]7 E; K5 ~) Vsetup-plots

4 y  O0 ^2 O2 \* n3 {7 U
1 ^3 B' C: N0 odo-plots

/ b- R* p# L% a$ a# ^0 t3 a. _1 Yend
3 _4 C' L  M1 d( F5 U
+ h- Q7 `5 j. V- Sto initialize-settings: a" U; |& y+ T* X1 B2 j
2 P2 ?! l# I5 x- t5 `
set global-reputation-list []
2 M8 \& O4 Z7 R/ T

+ A7 J8 ~) U: i) E2 h; zset credibility-list n-values people [0.5]
2 D6 r* r0 P% Y+ j+ h% w# t

8 C* N* m; B& p" N+ ]% iset honest-service 0
6 H9 R& ?( x* f$ ?. Z/ |1 r" W
. v9 B4 k3 J, B/ a
set unhonest-service 0

1 c3 H1 r* z+ Y/ C" T5 z' Z4 z4 I$ ~1 K
set oscillation 0
% U6 e8 g* h+ T3 @1 S! r$ ~

$ ^  h9 u: |9 Lset rand-dynamic 0
2 h3 R, l0 k$ P+ \0 o9 G+ k% S. w) _
end7 @- O# U! u% C+ h. p
# `' |+ T8 z5 z5 w. M+ S' k
to setup-turtles ( K7 T) y# L9 j; U
set shape "person"5 q8 z4 N; _$ j# J  ]& {4 F
setxy random-xcor random-ycor- W/ v$ k0 O& c4 O4 f& x5 ^0 y
set trade-record-one []' D$ Z( Y! L2 C& F1 p

+ |* ?- {+ t& Qset trade-record-all n-values people [(list (? + 1) 0 0)]
3 q) Y4 z+ H3 a6 f, g; \

9 T1 |# d! P# e# U2 E& L; fset trade-record-current []
% M; k2 |$ P7 k' B" T+ \  _- y0 ^set credibility-receive []# d% G1 k# r- x/ g' p
set local-reputation 0.5
  }- `3 X& m& K6 s& S4 Eset neighbor-total 0( q8 K! Z4 D$ r' k
set trade-times-total 0% O  F( `" l; |' w+ d
set trade-money-total 0
. R6 f9 r9 |8 `4 I; Mset customer nobody& S# ^: E- W- E# g% Y% ~
set credibility-all n-values people [creat-credibility]
  ?) D' A5 o- W/ g' |set credibility n-values people [-1]
5 J, Z. J* V: j; h! Sget-color
/ [5 ^9 d$ w  w: A4 v  d
& M$ G, c+ T( {# Q/ }
end
3 U' ^& w) r; N9 h/ e
7 m2 r, ]' F3 D4 o' N% wto-report creat-credibility
0 f: p% n5 l: O! p1 _1 hreport n-values people [0.5]
' g3 r" w/ c; `1 S0 h% Wend
% Q$ X2 G1 ?/ g$ {
  H9 \. W, ^' a/ n# e, Ito setup-plots5 c) z8 ?, R7 x7 Y# K8 ]0 Q
( t& D8 U! E3 F1 k
set xmax 30
3 z3 ]. \1 t3 n& |8 o

# I& X2 z& V# P- l: e) bset ymax 1.0
: p0 K  ]" m' G$ j  E  q4 t) f) r
! P5 @5 m9 ~6 T
clear-all-plots

6 y3 m3 M$ L* W+ ]5 ?$ E
& C8 P, a6 U: B- o( O& Msetup-plot1

! X4 k( i" N! C
  T( L& Q! x" x) C/ usetup-plot2
/ Y, ]9 ?2 _/ z: g
3 o4 O; M; L9 a: k" L% L1 K
setup-plot3

  G5 A# y7 j+ C5 p% n& m; {end
/ F, ~; a) I: h7 z* F& K
" e0 w+ W; ]1 {4 r& w% h* C;;run time procedures
1 [, v7 ^: z4 E. D2 b$ Z& M' i$ Q/ L$ f9 k. V3 t
to go
% q4 x  n; I! ^6 {2 t9 q
7 q$ _4 g" E5 }( K, h; Zask turtles [do-business]
" T( T1 T9 F' B; D' t4 b
end
* V9 Z, Z) K. W" w7 Y, X+ u6 V9 h% ]7 H, I" c
to do-business . P6 d- X& N: U
- y) D. h1 M" s8 L/ |' E
9 y& E. q% [2 s/ z
rt random 360

: \! e. r( k4 f* Q( D# ~8 f3 q7 K' h6 m: ~1 {$ \
fd 1
. `" w# I- p* _( t% b2 q/ H

' W2 D3 n9 x9 h5 `* ?, u* Aifelse(other turtles-here != nobody)[

1 I0 p% U  a; D' r7 m  w6 z3 L( f. y0 K
set customer one-of other turtles-here
; C* S: h" d0 @% n: r# P

/ K4 ^& ]3 a, R4 n# g. b' v;; set [customer] of customer myself
0 {2 y' f! ~9 q/ ?5 t

+ M: b" X4 H* N* l; sset [trade-record-one] of self item (([who] of customer) - 1)( |$ @3 \: D( f- ~6 C
[trade-record-all]of self
5 d5 ]/ y, S( j5 `6 w;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 S% [' `: ?, e, {* H+ ]6 \9 D1 a3 e: U/ S+ D' F
set [trade-record-one] of customer item (([who] of self) - 1)
' Z0 Q* X3 X9 R' x* S# s[trade-record-all]of customer
& Q' @5 a+ [  {2 s. l# Z

+ L3 j( y2 l& ^set [trade-record-one-len] of self length [trade-record-one] of self

5 W1 ?+ u% B8 K8 Z( z5 ^: t/ ]# j- W, p. d( N! E6 ]' v
set trade-record-current( list (timer) (random money-upper-limit))

3 j- z' s4 O; C# C/ w% X* \5 v
ask self [do-trust]
! H( A0 i0 G; ^. K5 p4 b  Q3 q;;
先求ij的信任度
* _/ M6 \6 G2 H! C9 e3 Z2 A! W% E* f+ @/ w+ G
if ([trust-ok] of self)
9 I# G0 [/ K5 s5 v( Y;;
根据ij的信任度来决定是否与j进行交易[
6 h$ M. i! u0 _2 t8 K% task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ n+ T9 K2 J. H+ X$ A

0 a6 a/ ?/ j' S1 V: g9 r[
& h! m8 H0 g- W; _# m4 F

6 U. |4 b/ g" H% V0 _do-trade
  v0 }; o: v$ y9 F; _
, C2 E9 e. u1 V0 i: c
update-credibility-ijl

0 l2 R2 m$ v3 S2 q. N! s" w
' I) X7 B4 }) }" Fupdate-credibility-list+ V) x1 j; Q4 Z) W3 q( `
( q1 y2 G; y; \9 N

) v/ f5 T, e2 p9 E* vupdate-global-reputation-list

" N4 @/ y" D  n5 o  x
9 L. P( h* Y% c2 [poll-class

0 _. U$ n* ?* I7 t
6 N3 r$ m' @4 D4 x0 uget-color

& w6 G$ k  e* L. u: f) N# u# v
; P/ f9 d$ o1 H]]
9 ~; N- W- k6 C2 v. G& R
/ S5 `6 T% i3 r3 _& k$ O! D6 J;;
如果所得的信任度满足条件,则进行交易
- `. _0 I0 k7 O" ^; D
  S9 Z! ^' Q% C( g- v* z[

; Y. Q2 n0 e2 [4 m# c7 S% [& T& p4 P2 m3 M0 o' r/ d
rt random 360
8 `% N3 K& N4 f' c7 n
* v$ V* K5 }/ F" y
fd 1

8 _* ^# v/ S" V+ D4 X8 a$ S1 v. ~
]
" l( p4 x+ N) O/ B$ {

% @% m; x/ M- s& n9 Z6 t' Pend

( Y1 ^7 ?7 O! Z( t# d$ X
; X; w) b. S/ ^0 ?to do-trust
. l7 r) d" Z4 L8 R! X/ A' gset trust-ok False1 A; q; f6 g' H$ L, g) x( ]

, ^/ f6 @6 A4 D# g

7 v$ i! V- z% xlet max-trade-times 0- I- M( c  p- U+ g) G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 Z+ M% _/ u* D3 t; {* _' Mlet max-trade-money 0
# w8 S$ I& f2 e( d8 Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' E; C, o9 z' S; A5 blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 c3 w: M  K5 Y3 P, e# x
6 U' P6 i" _: M! z0 L

' {- b5 ^+ t0 x+ F5 w$ @/ j# z9 ~/ Xget-global-proportion' a' L0 J. P# Q2 a' n
let trust-value: M2 y; k/ c% Y8 O
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)
% t. \, N9 U/ u" g
if(trust-value > trade-trust-value)' {- ?. K* Q+ V( R' p& Q, i
[set trust-ok true]
. |0 K' i# w6 ?' B2 {+ Wend
' @) d1 R9 @# D3 ~9 t+ k. }
1 d$ z" D6 {% b; Yto get-global-proportion
2 @  n9 e2 p1 P/ W6 ]* kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' T! t% G2 k* ~[set global-proportion 0]) I* u7 h0 E5 ]5 M
[let i 0- F% N8 l  e/ T0 W) `
let sum-money 0! q1 G+ [( }! G# D0 n) X, Q
while[ i < people]
" U. T7 g+ t5 e3 V4 t: H3 g[
( }! P* }1 o- b& Jif( length (item i
5 o7 ^9 e2 E( u* Z% F' ~0 U% y+ L[trade-record-all] of customer) > 3 )
- ~# [; R+ B" ~' {7 R
[- ?& j5 F1 J% r" U; @
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" A3 D6 D, Q0 q) ^( W/ o  ]9 F]' Y" r) C8 A6 a& q$ z6 W- b! _6 \, t
]
: ]' |( p0 v7 U  B& o/ c% \. Slet j 08 Y$ W  o' C/ |6 O, s
let note 0* B7 }& T6 @0 L8 T. [& }) ]0 {
while[ j < people]
1 ]! T# Z- E( x$ _[5 Z5 D/ e( D) t7 r
if( length (item i& G# y* B  o+ o' t
[trade-record-all] of customer) > 3 )

5 h& x; H1 J4 u) @[$ p( f. b8 `2 j5 Z' S% h
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
* l. y' s5 T9 }$ K[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  a9 u6 a. T* J) E7 D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], f" ^& Q5 q; Q9 a. h$ U
]: z! ?7 ?: w% |3 r
]& a# F$ a$ |/ N( a
set global-proportion note
# n+ K1 k1 ~" }]. q& Z1 u8 b  y! F
end2 M/ z) P  B& \6 a- ]: E( j* P, q
4 S7 L: s# P& X
to do-trade
& ?" O. B# u" Q  [0 e* j;;
这个过程实际上是给双方作出评价的过程6 z- s  J" l; m$ v# k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ F! U/ h/ o/ ]5 s' X' m3 Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ n  G& {7 t2 ]# c! ~! A$ a
set trade-record-current lput(timer) trade-record-current2 Z1 M9 ?3 ~& F: A! Z
;;
评价时间
% y. R  W, ~8 g: |  U% i* F8 iask myself [  H  m6 F/ P- A# P0 H+ @
update-local-reputation
: x8 A2 Z3 l4 D' g: y+ Yset trade-record-current lput([local-reputation] of myself) trade-record-current
8 v  o' d- X; G& Z; p]
5 ~" W- _, W( a, D8 `8 p/ f# ?' kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself! F: F  g* U1 E* N4 G- L
;;
将此次交易的记录加入到trade-record-one% [/ X, r5 W6 [7 X0 o6 W: Y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& ~1 t8 ~6 P' F& H
let note (item 2 trade-record-current )( H- a, X) c8 q2 W5 i0 H/ c
set trade-record-current. ]1 q% l0 L# U. V; m; a) x/ [
(replace-item 2 trade-record-current (item 3 trade-record-current))

, Y; g& d- ?* C4 j# y) d$ }  t3 zset trade-record-current- i+ I) b# {3 o$ I' ~7 M; @
(replace-item 3 trade-record-current note)3 k+ j% g& X' ^, w4 q

1 ]! i, v; A  @& v& w' h6 p
1 R8 |& ^# F- v( v8 P0 R
ask customer [, R0 M& w" O( T$ C
update-local-reputation
5 }  A& K' h$ Vset trade-record-current
" \/ u& w" Z! j! e, _4 _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) M; h) U9 x+ r# ]. a4 U
]+ x( \* Y1 k! s& s

% j6 r# @! b3 @
: }3 G8 R5 K( X
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ x! \! `, w4 M  y* C6 C% i

! }! }$ n. \$ [( V0 hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 q6 \% k: ~+ h' E;;
将此次交易的记录加入到customertrade-record-all1 p# b- s( q. e. B/ Y
end/ C$ d+ m7 ~: o- _$ R

* f0 T4 `: v$ ~. K5 p( I& Q9 Ato update-local-reputation
+ n# M! D$ a3 L8 P/ ]: Tset [trade-record-one-len] of myself length [trade-record-one] of myself
3 s, I3 }1 Q% x! P' w# u6 |5 p# x( y) Q" i4 @

. O( w. H1 C5 j5 k" G% G1 };;if [trade-record-one-len] of myself > 3
" ]' ]* A: e( X6 t
update-neighbor-total8 s; p: G5 m/ {1 `* I
;;
更新邻居节点的数目,在此进行7 e% M% m4 Q1 V+ ~0 y
let i 33 ~$ \" Y8 v4 Q, K1 k, d
let sum-time 0
" y% |0 y) ]. X2 Owhile[i < [trade-record-one-len] of myself]
- F) j( ]4 {9 }: e5 ^& g* c2 E[3 B* n, \+ Y, f6 x3 k4 g3 Q0 Y
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), i+ N3 l! E5 M7 T
set i. G- d/ k( F3 H( r& e
( i + 1)
7 Z2 |9 t6 g% [6 g
]5 n5 q# h" _5 a, n. _
let j 3
" h( o: e5 N9 _- [let sum-money 0
( O( ~, p. }& F0 {5 U( @; x- `" E$ Kwhile[j < [trade-record-one-len] of myself]
8 y0 m3 H( d3 S[; L4 F* I# Y! n2 i2 G$ N4 Z
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)
% i, s4 V6 M# y. }8 C0 b1 Lset j$ K6 r8 e6 ~* r2 W( v0 ^
( j + 1)
) ^9 k$ E2 V( l* l9 {6 T
]& Q( q' q. ?7 P" D" l
let k 3) @4 R1 v. L9 A
let power 0
) @7 H7 |8 ~6 T$ S- k' O! Glet local 0
$ ~/ Z0 A+ ]$ ^8 Mwhile [k <[trade-record-one-len] of myself]8 l- X! F5 W# W# b
[
4 {7 S' M2 V4 yset 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 I7 U( y7 G9 S+ ~
set k (k + 1)
. U0 k5 D/ }3 k$ O6 U# ^, h+ z]4 N+ _7 R# [: w4 v, T3 \9 j
set [local-reputation] of myself (local)
" Z2 v! C  z' R# J( Z- Z9 Rend* {6 F3 ]3 k3 m( W8 o9 _
, s8 l% [' S/ j) R
to update-neighbor-total( z* L# V3 c- H, C/ U7 w9 S
4 l4 Z: X- h6 a. p% K3 k' Z1 W
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 I! h" @5 {2 V( D: j9 v8 l6 r/ T- J6 v# ~# k

/ K4 s8 R1 [1 Q* q. y; xend$ O' k+ ~6 j7 s+ Z5 m* N

8 J# Q0 H/ r( a, Q. s. `" ^to update-credibility-ijl - l" M  \" ]/ e1 }  @

) N  y+ D; z9 V5 h! J1 d2 n;;
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。
3 r) G% U9 f: G+ u& @: `let l 0
" v' A; d+ n% f( c& V' s8 Xwhile[ l < people ]2 q$ `( G. [1 K' s
;;
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
, v8 i/ M; E; O8 h. ~5 ^[
8 }8 z& D6 o; D# p! ]( \* Rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)# {9 ]+ u8 l" w! e/ @$ X$ }4 K6 k
if (trade-record-one-j-l-len > 3): C  q" I$ m5 j# q$ Z: ^
[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: N; F# @5 I/ S$ }
let i 3- Y! h4 s5 d& H1 N$ G
let sum-time 08 o6 P, {3 ?8 z* n  ~5 D$ i8 H
while[i < trade-record-one-len]
# U- L2 o0 ]2 |6 a[$ t- f5 p7 X9 d4 b9 k
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 h# C, x) L1 w1 N( t, e' ^6 t
set i
, E; [; B: N/ Q% I8 a8 h# Z( i + 1)
4 E4 a: u/ U: ?) ]1 J3 G/ U
]
# q# J& @; E$ z$ U& ^let credibility-i-j-l 0( r  E) W9 @* m0 l3 K0 p* R8 ?
;;i
评价(jjl的评价), I; Z+ J. U7 ^. o$ R
let j 3  B/ E% ~$ j! F! ~
let k 4
1 h6 k# e/ l& e# T4 G0 r& m7 ?while[j < trade-record-one-len]
  Q3 r: W. I9 H8 R, ~9 B4 D/ `[
  _# j; k0 L1 l6 ywhile [((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
* }  m, \8 b* 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)
/ Q( H5 ?& D8 @$ zset j
. }5 v" K2 {0 s7 C/ ~, ~: u( j + 1)
. @1 |5 q7 C; |. n
]% n, a6 O# [, ?+ g
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 ))
/ A5 U$ B! N2 {* h/ d& Y3 r: Z" `  u

. t& I  [9 e& c6 g/ V3 Flet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
& e6 c/ c3 x* R! `4 _6 T2 n% z" \;;
及时更新il的评价质量的评价+ y, ^- e/ ]' z6 a* f8 z: F& q$ B
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 ?& ~/ S7 L! M! sset l (l + 1)
0 R. {: L- c8 E) e$ V]
1 j+ u9 D# m- r6 @; yend/ J& K) F; l9 `7 Z& _% s
' A1 @" G4 s4 ]  ?
to update-credibility-list
/ l' X( K  K6 }( Xlet i 0# M( h' K+ u; [- T% N; l$ V
while[i < people]
% C' z2 P" @" W: S% L[
/ k" t- K& p1 h/ i& Nlet j 0
! N7 n) c+ s0 W- O5 vlet note 07 s: G7 W5 S' {+ M+ a  b
let k 0
+ R) J* O1 X0 u1 A8 I5 P0 K;;
计作出过评价的邻居节点的数目
1 D4 x$ j3 U! i8 d* owhile[j < people]
. X  I4 O3 }- r# }1 ~0 T[. E8 g" }/ `) N/ [
if (item j( [credibility] of turtle (i + 1)) != -1)$ A9 T4 B; g8 K7 S  u
;;
判断是否给本turtle的评价质量做出过评价的节点# h4 n6 I. X+ g, U2 h
[set note (note + item j ([credibility]of turtle (i + 1)))# C) k% A2 ^5 {
;;*(exp (-(people - 2)))/(people - 2))]

/ Z& ~' {. [' _7 ~( uset k (k + 1)
9 f& K# a, t6 \" h# V]
/ @* _9 G: U! |0 {2 wset j (j + 1)* l9 |1 j' ^0 s7 \+ }  Z
]9 w7 n6 J+ Z: E- K
set note (note *(exp (- (1 / k)))/ k)3 _& n9 |1 ]5 ]0 \/ X* M' p8 a
set credibility-list (replace-item i credibility-list note)$ J! J$ O( S. f: K6 T1 U
set i (i + 1)
# ~/ {' k4 t6 p( y]$ v9 r. }  @2 ]+ T+ d
end: T, ]* l4 H$ N/ f
) B9 V$ c5 H. w' R* e
to update-global-reputation-list/ `0 j& D' n7 W! v* U
let j 0. l( x% ]! F, F( F9 |
while[j < people]+ a& |! b  b1 I6 C
[6 x: I2 j5 T4 y; ~  G
let new 0# w& p% H: |3 ]+ w3 q/ Y7 ?2 m2 I+ W% h
;;
暂存新的一个全局声誉8 w' w( S# p9 O6 H1 l
let i 0/ o& W0 K/ m1 d) o& v
let sum-money 0
5 q* d7 M$ g& @4 D. P3 ~! ilet credibility-money 0: @2 T6 _" P" h, t
while [i < people]5 J0 W3 i" a" N9 }
[( m1 a+ M6 j% H# f+ _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! ]! I' j6 L. h' N) M+ B! S! Jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# ]- e& y9 U8 ]1 F1 T5 B3 X
set i (i + 1)9 \! t* H5 Z* m
]  O  b# W  c7 A6 }6 I( B3 P
let k 0
2 r8 N: ^, p" j3 {" ], j" Elet new1 0
: y) {! E$ v4 e& m5 o0 zwhile [k < people]' {8 e) z7 m( e3 j
[
$ a8 m$ T* {, @0 _6 B- ~, k4 |$ qset 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)0 o) `  a3 Z0 C' `- B4 p
set k (k + 1)
% g1 y% ]& E: ]2 ~4 g6 C]
: j% b1 k7 a, M: r% ]' {! ~2 w! Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" Z) K$ r3 ?6 m7 s+ O1 l1 C# B- kset global-reputation-list (replace-item j global-reputation-list new)
; S: F2 z, ^$ W; V& Wset j (j + 1)( o2 v* k  ?( t$ D
], p7 D- x( O, J/ B
end
, ^0 g) T9 n* i* h5 ?* c6 V, r# `4 {0 U
7 _3 O  L6 {* J+ B
( h4 R! i, x- {" C% w! w1 B
to get-color
6 j" @* r. a# _. K. u! p$ N* g
set color blue

9 L$ g. b5 d) F! Qend5 G+ b! L$ k0 o# U2 w8 k) c
3 A& X3 f5 R" V' h, t
to poll-class* G1 j' b9 C5 k% `- g
end
4 P' y' I- I  [3 u4 v
1 k, w, @1 p3 oto setup-plot1$ w5 z/ r) S0 U) F4 X
6 a/ h  Q# R' ?7 g0 H' H" r
set-current-plot "Trends-of-Local-reputation"

+ G6 S- L$ E/ Z+ W  r2 y6 r9 x1 V
set-plot-x-range 0 xmax

/ {8 `! u3 _" m7 p
+ V( n& `. G3 D3 z9 h6 ~set-plot-y-range 0.0 ymax
" c  R. F# D5 j
end
* V7 u# k! r# k; i+ Y% x2 _0 b# r; \
# Y, n2 m% R; f- E9 X4 n6 ato setup-plot2/ s7 H# G8 A. q

8 h; [' d& V$ m  l2 G  ?" }7 Xset-current-plot "Trends-of-global-reputation"
8 L/ B' `+ l6 d6 r8 f, ^% B
% ]( n7 Z3 u- ^6 y1 ~
set-plot-x-range 0 xmax

5 ?1 c" A4 S  V# J+ E* c6 `0 y$ t" ?6 r' P+ h
set-plot-y-range 0.0 ymax

5 s$ {$ S% U9 a9 ]) X% `% D" Y0 n# Q$ Send, y# x. J. p. B/ x; M2 K* M
" n- {. v6 V3 X
to setup-plot3
1 G, Q, ~7 h' O% {8 f7 G! X
0 o3 C* K; W5 `4 w; o% X2 @set-current-plot "Trends-of-credibility"

; {( I$ a" c6 s& R, u
* p/ y7 H) x2 O. G6 S: h7 h# l% ?set-plot-x-range 0 xmax

) h2 F3 G3 t" Q& W6 t( e% O
- J& i8 o2 L/ K5 J2 n2 uset-plot-y-range 0.0 ymax

" ~* I3 w; ?$ B5 {end
9 O- l# h3 \5 q' B% O( o
3 x/ i% D9 u" u, [to do-plots9 g( k4 G( Y' }
set-current-plot "Trends-of-Local-reputation"
% `! z* f" [  _* t( }6 jset-current-plot-pen "Honest service"
* B; ^/ ~; `) [& G* Dend0 Q1 ~- ]1 ^) d" Z
- O% ]3 ?' n5 t& e  E$ o4 b
[ 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.
; I: A# K1 |- B; {* w' e7 R  L* a2 P4 R1 _! M7 d
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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