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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:
1 o% r: R& {; |# r' T7 G0 o4 ~- k' Cto do-business
: S; }) k! t' A# l4 W rt random 360
& ~! X! V! a3 Z0 t0 s& n fd 1
( `* _  f) F- U4 Y) v+ b* m1 I ifelse(other turtles-here != nobody)[% C3 Q+ H' O  h. z% H5 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.% t* a/ ]  `" T
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( u- j% f7 I7 R" B
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 a% v) r& l' o( m
   set [trade-record-one-len] of self length [trade-record-one] of self, l/ B, k0 A! |$ p& {& Y# w
   set trade-record-current( list (timer) (random money-upper-limit))1 a/ r2 c" v3 T* H! t  d9 X) Q
* O3 U& O: \  }& Y$ s9 ]. Z  p2 k
问题的提示如下:) z4 v/ C8 g% W5 |
+ @; O5 B4 Q" d- c+ q: n
error while turtle 50 running OF in procedure DO-BUSINESS6 y, s* Y5 s4 I( w" ]; _
  called by procedure GO
% c9 a4 _! \, v2 v. IOF expected input to be a turtle agentset or turtle but got NOBODY instead.
* |) Y, z$ J  Y' ]0 v) \
(halted running of go)
# h/ N: Y  N& z% Y/ `# w9 d. _/ @2 n, Z+ y5 N$ V
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 b4 {% g& r2 R6 {4 ]
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) k, G3 E0 \8 G3 k! J
globals[6 A+ i/ g3 g3 `- J( Y( S- w
xmax2 k% @  u! _# N2 `7 N1 Z5 c
ymax
2 x: W; G$ ]4 x! h5 M5 l% Sglobal-reputation-list
: c" q* f8 F6 \( z( [% M- r  O/ ]; ^' y5 C
;;
每一个turtle的全局声誉都存在此LIST$ L# v+ D7 w6 p4 v% @/ {0 f- y
credibility-list
! ?5 z4 P! u! ]" _% W;;
每一个turtle的评价可信度% x* \1 v$ w- B9 r( I
honest-service5 R& o3 I1 Y3 f- G
unhonest-service9 j% }# Q% V, j( w
oscillation
* Q6 E3 G/ d) ?# u' Prand-dynamic
2 n; {7 Y& P' }6 P. H]( X" N( P) `; P6 |1 k

. R9 D8 _( [; {, }, u1 T+ a' qturtles-own[
% y/ V2 J  x/ }# ktrade-record-all4 g4 G5 k% \" @4 F; Y" Q' W
;;a list of lists,
trade-record-one组成: T0 _6 |- X. x* s) |1 s
trade-record-one7 Y9 l6 b  Z! I1 C8 g8 c
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. t8 u5 ?% }" p9 a. Z. b' f, r0 Y% H3 w$ X* C+ m
;;[
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]]
, a0 U: F+ K1 _4 _7 K7 E. Otrade-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]
9 O% n3 @! Y% E( q6 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list2 H% q' i' a) P6 s; ]
neighbor-total
) B5 m% X; f. y$ P0 W;;
记录该turtle的邻居节点的数目
6 o* \0 t  |. ?% jtrade-time1 h4 i' ^/ @, }
;;
当前发生交易的turtle的交易时间, d$ H- R6 B6 A- [. T; l. z& O. n
appraise-give2 q) @" ?  F2 E5 {3 m
;;
当前发生交易时给出的评价
8 `8 c) ]; s# R4 dappraise-receive1 h6 [# B& `/ t4 |( S
;;
当前发生交易时收到的评价
* `1 w1 U0 n& i4 V1 \4 h1 w0 y3 ?appraise-time5 T- O2 }( A9 p7 l! F4 q" w
;;
当前发生交易时的评价时间& O/ h; [$ h% l) `, I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' G6 x9 B$ o1 y6 p( ]trade-times-total0 Y3 E) e0 l" r" U. p5 b/ j- Q* [
;;
与当前turtle的交易总次数
/ T. i0 ^: {( p6 ztrade-money-total
8 I1 v" G) [: x/ e7 I7 ?;;
与当前turtle的交易总金额+ V3 w5 {  A) f( T
local-reputation
5 c- q$ E& L5 Z/ a7 t  v- Oglobal-reputation" P# h: _0 C/ X1 F! P, ^& M- Q
credibility4 s6 V* o* G: y6 N- a1 _
;;
评价可信度,每次交易后都需要更新
( y! t& F9 P& A. v" }$ ~, Z' acredibility-all
; r: h& f7 f( K% Y0 g' l7 I6 E;;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( t/ z+ k5 T( a. Q$ p. P
! h* x  i- m  F3 q& l2 b$ P6 n;;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0.54 {- H4 j7 z# j! p0 `
credibility-one
& K$ n: u' t9 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people
& f0 Q& X1 D# Nglobal-proportion
7 o' z, Y7 [1 Z. S. Bcustomer6 o& s3 E1 M; F: P" j
customer-no
3 R0 E) T$ \/ htrust-ok* P% z3 F! ^+ `
trade-record-one-len;;trade-record-one的长度6 `( Z, A, U, o9 U
]
: B+ E; n5 k; U6 S5 r( M  J* n( f8 K7 o0 }  o) Q
;;setup procedure1 s0 `* m; A* u$ J9 u
1 ~# l4 x8 O" k) z- S9 R
to setup/ F! d1 |3 D6 `" M) {
( h, \: |9 d+ a" o8 J
ca

- y& o% R7 Z5 L; N. W" r4 Z6 j9 N# \6 z" U$ N# Q; M$ H; @) w
initialize-settings

& M/ i& I% O$ U" y2 e, z' J' i4 U( G( _+ U
crt people [setup-turtles]
3 ~. ]1 Z; w# N/ D, m
0 ~4 B0 i& X; |" M- U
reset-timer

5 j" m0 w% M: r$ L' |) l. B$ k- l( {" T
poll-class
  u( z) Y$ n7 h% r

" R, l. V. P3 k9 D. H7 gsetup-plots
' [8 E3 @* U& A$ \% [5 |

4 C3 k, `4 L$ vdo-plots
" E  {6 E2 Y4 P) a5 A1 r# G( S
end
4 Y' s: y3 a& j; X- q1 H8 k$ o4 X& w
to initialize-settings; F& I* v/ D9 K; Y3 M  R4 f
% M, X. h* p6 b2 k
set global-reputation-list []

& {2 ?) Z8 z9 J9 R! J- ~5 `; R/ m
8 l. N  l/ X1 y- V! e' Nset credibility-list n-values people [0.5]

' N$ a$ ?& ?; a: B: m! u  k2 N4 w& Y. ^- Y5 f
set honest-service 0

+ z1 x% g' e4 l& E+ d# \  \
1 I7 w  F" L* C6 G; x2 u6 Aset unhonest-service 0

& Q6 u3 w( w! b# h; ?; o- s1 ?! ]5 ~
! }1 Y/ q% P9 L% R/ C9 ^0 |set oscillation 0

# n' J1 Z5 j- N7 Z$ B& w! x# ]8 q8 k8 r3 u  g! t- `1 I
set rand-dynamic 0

5 [1 y+ c( }# K7 e3 W* \3 H6 zend
; _% Y: S1 [- S' ~2 B# m
( }  a5 G4 U. Pto setup-turtles $ a+ q1 w3 O' ~' T$ z
set shape "person"
6 A4 O: W$ z. s& H+ dsetxy random-xcor random-ycor
+ t, B; F- m/ |4 N) [set trade-record-one []! ~5 i: [. _! b5 K+ H

$ c& b# _" {; X% Oset trade-record-all n-values people [(list (? + 1) 0 0)] ) ~& j3 V" X3 ^2 u2 b
& |1 i% \1 X$ `( L- n7 M; h
set trade-record-current []
2 u, Y8 t3 M9 [6 A  ]' aset credibility-receive []
- @/ u& A: |4 mset local-reputation 0.5/ D( t6 m1 N$ W% }
set neighbor-total 0
# m( q3 ~7 ?# N+ o7 f7 Z' u0 kset trade-times-total 0
, Z; y4 `0 @+ m! A! Hset trade-money-total 0
& q2 j  x6 k2 V5 u- A+ Wset customer nobody
7 }4 j" B6 l& A* w" uset credibility-all n-values people [creat-credibility]
$ F$ j4 l+ }7 M) Y9 J9 Fset credibility n-values people [-1]
3 V8 \. L% Q8 wget-color
" t" K! P4 O1 ?$ x( U, ?3 v
( i4 ^6 U& W  L
end
9 f6 C0 q7 n8 O* [" ?; D5 N* N3 ]3 ]! T0 J( ?2 n% ]* T! P! Q
to-report creat-credibility( r3 ^2 b' ^) t9 S1 t5 w
report n-values people [0.5]/ `' e+ u9 K% D$ h0 K4 C
end
2 R7 w2 X' j* ], g2 B
! ]! z( r. P* Y1 B) gto setup-plots
' |  B& I- u+ ^$ @; k3 H+ K: }( O& n& a- W' `8 p& I
set xmax 30

. C% @& H+ `- |) F. m! V4 e) ?* C7 Q  e9 g
set ymax 1.0

' d! @; o8 x0 o  }
7 d; Y( r  X/ e* b. ]! p% Bclear-all-plots

% V/ M5 }5 a' g! s4 [1 j* y8 T+ u/ M
$ Z8 h1 s5 b- C8 f; r( T2 R% V% ~- tsetup-plot1

4 d" |) [% Z2 t5 [+ h* S: O: r
. J( S% v& W9 _# R" |; M% a9 Nsetup-plot2

- P3 W$ ]' R" F$ Q9 f1 C- h! O/ T% o: [7 N* l. O  F% ]
setup-plot3

! l4 A7 u+ F2 k1 d4 a# k& eend& q, w& h% \5 t; B3 Z
6 o* l0 ]" a8 g) \4 {& ^
;;run time procedures
0 G' S7 x! Y. t; z7 ^) b' b/ ^, M- [8 x7 E) w2 k8 J
to go9 F3 N/ h3 |0 b' ^; k! k2 ^

4 z6 S6 U8 G* Q& M+ U* ]( Bask turtles [do-business]
7 d5 ~0 c' H7 h0 C0 {
end
% `% n( ]8 A% B2 B, {" x, A
) q6 G6 n- W: Wto do-business
! f; d1 y: `* M2 R$ x5 E

' C% r* z! Y# F/ x  i  a# r: u( P0 N" Q. w# m: T2 |7 [. S$ C
rt random 360

( n2 K( Z) D( |: r8 S  s& r+ T: f- {6 t& B& z1 y
fd 1

- I* u% R, D: ~5 P8 R: C/ N& K
2 e2 ?# `# ?1 ~ifelse(other turtles-here != nobody)[
3 v) k/ z; H  [+ v3 n8 ?. }

  p4 b+ @! y$ t8 }set customer one-of other turtles-here

9 Q+ K2 m# z! P. i, P  j9 Q1 T4 d1 h- W5 k$ z9 H
;; set [customer] of customer myself
7 a& U' D! c( B: R) T2 c

) ^! q0 C' W8 C* N9 hset [trade-record-one] of self item (([who] of customer) - 1)! g6 d8 o; i0 `; t
[trade-record-all]of self
3 r8 B- ?: N' [$ K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 D/ v  s. P  I

& U  m: h" U+ M) |. L& jset [trade-record-one] of customer item (([who] of self) - 1)4 l) n" D* E2 z
[trade-record-all]of customer

8 F, F) P- t' _$ V9 D) y; Y$ v5 d) C0 T/ h6 K) p
set [trade-record-one-len] of self length [trade-record-one] of self

3 W( c: J: m9 y! u5 s" B& h" A- H2 a- s: g2 e; p6 a
set trade-record-current( list (timer) (random money-upper-limit))

1 P5 f6 n0 ]( O; t3 z
1 @0 w; S% A, kask self [do-trust]
; z/ c1 Q+ E) ?; H* r) D* p;;
先求ij的信任度9 l, {! C6 f( W
& N9 W/ g) {. t0 C* e8 K8 f
if ([trust-ok] of self)
+ j3 ]9 x) |" z* u; P7 H  G;;
根据ij的信任度来决定是否与j进行交易[9 s4 |/ L5 N% V8 a+ k
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
: P0 Z! F. F/ T( w2 @/ }+ n3 Q1 A$ `, |; c4 U3 @8 t* h
[

( l% _9 `: z& u8 @+ ~0 W- j# T9 P# t8 W- a8 ^
do-trade

" |* A- y' j& y
% t& \  W; F, D, m  bupdate-credibility-ijl

( r* \! m: N. Y$ [1 L
' C4 u, S6 P' b0 W! b8 ]' Qupdate-credibility-list
% c# W( \1 I/ V0 p( f' D

5 n5 P6 K# J, g6 h* e% d% b' J5 d. _0 C4 C
update-global-reputation-list
2 D6 k" }+ a; `8 o" ^1 W  ^! I$ j" Y

$ x' s/ d, S# J4 r) c" upoll-class

  L% R4 d/ j6 V  G+ D. m5 y: n& L4 T* S- H( {
get-color
7 Y7 _1 {: j! a- }: [0 H

) R! Z- y$ h9 I0 l/ m1 `& j. H]]5 x) ~: t6 j7 O
" a7 [% g& L  H% Z# x
;;
如果所得的信任度满足条件,则进行交易
; O% X/ v4 U6 B: W) |- s1 X3 {
. r% L5 B! U; a( t% k" b, ][

( L) Z$ t, u! i; O1 v1 l) S! @
" C6 ]: E* Y: U' m, ^2 Yrt random 360

6 u4 F( j: A0 h# h( F6 e- ^3 G& j8 I% \& u- ?) R9 t0 f, _
fd 1

1 m* w! l/ y( |
# `+ |" M  p6 d]
4 k& t7 R2 u5 j/ \% t

: W6 v" E4 A3 v7 ~$ o* Z9 Pend
3 O; {; J! Z7 H
' ~4 V2 p9 s) y: _
to do-trust
* M- L7 y) y' N6 {0 vset trust-ok False, a( p* K" K1 ^9 v
2 x' B- r$ j3 M! p6 Y
1 X4 L! [$ h, Z- H9 _7 i' D
let max-trade-times 0
% z* S  F# r6 `foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( W) H$ N7 F, ^1 w
let max-trade-money 0% a/ s3 B0 R: J. \/ s" b1 w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" u% b$ I$ S, m9 d' Dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 S0 {5 ]  H; Y7 {' T! T
( S0 Y; b, h# _4 T) P5 X
/ Z! l9 \) Z" t4 m$ W
get-global-proportion: x1 J, H4 v) ^5 x) x2 r" t
let trust-value) ?* v* Z0 O+ y9 k
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)
. a2 W$ F. y2 x; p* |7 Z6 s( n
if(trust-value > trade-trust-value)
& F+ w& ]) M% n$ \% S[set trust-ok true]8 x4 X" T0 Y! o4 ]
end7 s& |  t, O* D$ n2 k

" M9 {# ], O7 K" G: z2 W' Yto get-global-proportion
. K, o) s3 Y; n" Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' u5 r" X& k2 i3 X
[set global-proportion 0]$ v! U, B$ n3 n' S
[let i 0
; r, z; K5 n, t- qlet sum-money 0" b% v; m1 d7 G' N4 {. R
while[ i < people]
- u* E! s6 p* S7 L9 C5 @# W6 P[9 x4 c( b. h: s5 N, Z2 |
if( length (item i4 ^" y; C, s! g4 N
[trade-record-all] of customer) > 3 )

9 d5 ~$ s# r0 }8 x" V* Z9 `- C[3 U- ~* ]- v5 V
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& L2 W  i2 d: l/ G8 g
]
! [1 Z+ E0 m& V]! x( z3 K; l6 r$ Z
let j 0
% |. A% a( q% c: Olet note 0
  D6 D" l2 F8 j0 uwhile[ j < people]/ V2 t, k1 \0 f% N: `
[7 g! p$ j1 w6 m
if( length (item i1 Q6 ?. \% }# U3 X( i) h0 L
[trade-record-all] of customer) > 3 )
& l1 K0 C0 F! J. H& y& G( U
[
4 j5 g  w' C/ b  Y4 y; V) Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# B$ q" C+ ]8 O[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 j' K4 q' i) Y; ~. E# F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 \& s9 W4 N) U3 V]8 i( O$ {( x7 ~5 G3 u! C2 M' w  J2 a
]
6 r, U0 k% q1 K/ j1 P; vset global-proportion note: P. u0 u' c( u0 X
]
- e$ {* k+ W- aend
" M" j' Q7 c6 S- G! Q+ S: v9 t. l. H- n; N" ^0 M
to do-trade
& `. |* ^* S. m0 t5 h; v;;
这个过程实际上是给双方作出评价的过程
: M# K- i$ H$ G5 qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) K$ o+ Y/ B1 n+ Y6 O
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 m1 [' [( _5 l8 C& r3 e" |
set trade-record-current lput(timer) trade-record-current5 J/ |- O6 f  X8 r% H
;;
评价时间9 k. S* C7 V- S1 I; p% b
ask myself [
6 c$ h$ u& B1 Z) {- y& d! J8 j/ A3 ?7 Wupdate-local-reputation
9 _+ x+ m- S: Bset trade-record-current lput([local-reputation] of myself) trade-record-current6 p7 [$ Z2 {" `& Z! s" V
]
6 ]- D. k) z; ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
9 `4 C7 ^/ V! Y! I3 I& i5 O;;
将此次交易的记录加入到trade-record-one
; |3 \  N" f6 {+ Qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)9 g. h% t* X  Z) \0 Y% C
let note (item 2 trade-record-current )
* L2 M+ @  [: V- S1 S( Yset trade-record-current5 R" M1 v$ l$ W4 S
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ m8 e, ^$ q- t$ g) P$ f6 C( o/ S
set trade-record-current
2 a9 P/ \; i8 u- W$ p2 N(replace-item 3 trade-record-current note)
4 o5 @  s& ^' y6 I) i4 `5 f7 d# ~) U! N4 x1 c
! N% K1 x9 ~. l, _1 x- _7 U. @
ask customer [
& s" z7 n  k2 X3 A% A, Q2 a& bupdate-local-reputation3 t* A. P: [3 ~* o
set trade-record-current% z+ c" x9 q2 C5 Q3 P" S) m2 Z
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; h# t- S) m8 S3 l
]
1 r7 J; {( y) S, A8 V
2 n" a$ w% b. Z7 m; T' c  S

2 I1 v6 |* S; W7 E: V# Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ t9 Y! ]8 y6 ^
) {, p1 z/ Y# B7 o& L) k6 D( k& V3 \
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  I4 u' r  H1 \2 M+ ]. O* f/ E# Z;;
将此次交易的记录加入到customertrade-record-all
' P& H2 }' G5 X. Uend
$ m, l8 p" f: ^0 x  {, [4 m% h; Y# W9 s6 `, U9 u1 I
to update-local-reputation
- Y1 ?4 j' N% O9 l, X, T, y# Nset [trade-record-one-len] of myself length [trade-record-one] of myself
9 Z8 q; ]* x$ l4 {" K2 v. L  K/ R
2 Q4 }% ~$ q: p, F1 d" s) q5 p' v" v
;;if [trade-record-one-len] of myself > 3

/ Y" U/ E0 T8 zupdate-neighbor-total
: B8 f; k  L3 }+ s$ J) S$ q' n0 V7 G8 Q;;
更新邻居节点的数目,在此进行
' D6 q2 \) o* mlet i 34 t6 k0 [- \9 o
let sum-time 0
: p+ T( l+ l- t& F1 Gwhile[i < [trade-record-one-len] of myself]2 D1 x) P( ~  ]) H, B8 h6 B# h# ~
[
0 x. B/ M2 t7 e9 Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! i8 s2 ?8 M! Z2 Q, X' ~  c& R
set i, d: Q8 K- F9 ~) t) `. Q- k
( i + 1)
9 S1 V5 `; C# E* u
]
2 d+ ^5 h4 |- ?3 Hlet j 3
+ w) s$ r1 Q% r7 Slet sum-money 0
9 P3 Y4 C, A# h5 Kwhile[j < [trade-record-one-len] of myself]& d1 @, Q' _  L
[7 J% V; n( x( a
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)2 i) T" e# m7 h' {# P6 g! I
set j
  S; k1 r2 O. q7 w( j + 1)
; j. r% f$ K& z7 C1 F8 p3 _( c
]3 x$ q: C) g9 F& r% S+ f/ K% B
let k 36 b+ J6 f4 P% I5 U
let power 09 Y+ _7 y5 G3 U- ~& o/ p
let local 07 q* b2 G' O, D" X6 Q0 V) k. O7 G
while [k <[trade-record-one-len] of myself]9 t, i  R3 K7 R# t! _2 ~6 U
[
6 g! o# g; N' P' V$ ?- 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)
7 C* p: l. N$ a' o( Uset k (k + 1)0 Y) E! S$ p4 T: p9 |6 A6 X
]
1 Q9 Y; `9 G" C2 }) wset [local-reputation] of myself (local)3 K. e( W, N0 j
end
/ j% O9 D: j1 V/ c4 Q( q$ S
8 g3 S! A) `" Q- y3 C( g& ^to update-neighbor-total: U; ?5 G7 x- w8 S6 C

5 J( {$ u& r) v  M- P* h2 ^  mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 i7 u0 g% U( H( I% X+ R3 q" x
' j" j' P- h+ M. v; C

; h1 T2 b+ u/ [end6 d7 W/ @8 I+ n

% T* [1 m3 w2 c' K# O8 d  u% Fto update-credibility-ijl
/ G( m  A6 A5 G8 P# v+ M7 d3 e. S* u+ X* |* U
;;
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。
" j1 e% e. |7 t  {5 Y* W4 tlet l 0
) _/ {$ j- J9 v) Mwhile[ l < people ]
9 @5 t# P  N4 V2 J" q;;
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
3 a' f! Q- l$ l[$ w0 h1 U7 v. T! H2 i
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 R* K) w- H& ~, M( X0 Zif (trade-record-one-j-l-len > 3)6 U8 W& D3 [5 q" n  d+ G$ `  Y
[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
- C: l! ~( }9 [5 rlet i 37 t% a% D; |$ m! i( z" ^
let sum-time 0
) u2 g+ y. t4 s; ^" Q( I6 D) ~# _while[i < trade-record-one-len]7 D, n$ o7 V6 k  Z3 K6 f
[/ \4 q# x2 m* d) w$ Z
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% K2 A( F5 p* n! ?
set i
" d, g5 ~; E% y8 _/ x. D1 Z$ a( i + 1)
+ J8 x8 _! f9 O! |; w( k# b
]; Q$ f" y: {+ f+ @3 G: l  l
let credibility-i-j-l 0* G8 o# |4 o( K* c& M
;;i
评价(jjl的评价)( a( ]$ n( G1 d8 T0 p! f7 n6 @2 s
let j 3
8 ?& v* P- j! H* X0 q* u! Alet k 4( m0 _& t' [- R9 d) d7 g0 P; ~! O
while[j < trade-record-one-len]
1 o) L- t3 v( q' L[! q4 X5 t) O  K; n7 F# y
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
8 D. M' `2 Y- X8 z3 }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)
0 B& Z& W/ I3 |8 t/ }set j
9 e. e2 F8 Z- d8 I! J, |) [; I( j + 1)
- s! h" Y( I' g& V& K9 T
]
; L* A( f- x+ A% H( \& z  e7 Cset [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 ))( k# {2 b7 }( `9 T2 X

- D  `  y, |8 B% V

; q9 N! G. V" C2 u. c2 `0 Xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): y! u& Q# X$ v: w- p$ t4 f
;;
及时更新il的评价质量的评价0 V) {, j1 |/ M  O
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]4 F1 |: l0 @$ U, h9 t& w
set l (l + 1)
) n! H% Q/ A: u: T]' J/ V- `7 p3 H% n8 t9 H' S
end
  A+ u* W. d, U3 G4 Z4 w% X9 r8 @5 I0 r5 G4 O, R) F/ ]: |
to update-credibility-list
5 P6 g/ B' {5 ]& b5 ~let i 0
) w. A9 V5 j6 Y- H' l/ [+ l# Fwhile[i < people]( K/ P0 \1 _) r" A" V
[+ O6 E" u2 M! w  P2 I9 i
let j 0* G0 [5 P9 b  u$ S6 h# v. h
let note 0- @6 @# T) l. r; Z
let k 0
" c( w' V  m. p, W7 D+ n7 e( };;
计作出过评价的邻居节点的数目
* r5 g: [! l) }- p- [; Jwhile[j < people]* z' L/ I' B2 |7 T. ^  }- h% c
[
4 J3 w' z! H+ E- |' G* j. H& S& x2 }if (item j( [credibility] of turtle (i + 1)) != -1)8 h( s# ?: a$ [  s5 m7 s7 s
;;
判断是否给本turtle的评价质量做出过评价的节点
0 M% y( n" j/ @6 f7 B[set note (note + item j ([credibility]of turtle (i + 1)))
7 X! T  i8 B: H% p5 N1 w;;*(exp (-(people - 2)))/(people - 2))]
' L2 q! I: ~, S& i, X, f" M; a
set k (k + 1)
: ]2 K  }6 _: x$ q- c9 U  t, W* g]
( f  ^7 E+ x7 Nset j (j + 1)" h5 M; w" t3 V; t
]* o( K% W# ^. P! _
set note (note *(exp (- (1 / k)))/ k)$ B. H( ^: T, f7 N) q
set credibility-list (replace-item i credibility-list note)
1 a/ E( u/ e2 r9 d) W9 X. \4 zset i (i + 1)" A3 r0 x8 X% k* L) u% s8 {
]- h$ @2 V; e$ k' D% y
end/ J& t9 `) `2 k7 `2 _, q/ A/ w
% P& q2 i9 V( G9 N( x
to update-global-reputation-list8 V6 Q9 Q) `# X2 L* [
let j 0
+ b% n! ?, [' O2 Mwhile[j < people], W7 J4 x. w5 \
[/ `- O, O: o% `; c3 c
let new 0
! J9 _* s0 w, @1 f1 F1 \;;
暂存新的一个全局声誉! U  g, ]! D1 ?5 ^  _
let i 0
5 s3 e, V' d9 W* Dlet sum-money 0
$ j# ?7 Q' A& k4 f, m: H( @let credibility-money 05 t$ \3 @/ O- b7 s0 m; I1 }; d
while [i < people]1 m. R/ G7 S* D2 b. N6 w
[2 y$ n( \% }4 |& v/ h8 ~
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  F# ^: j  i4 G& ^5 L5 f3 ^; ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  S' p" [" ^' I, l! i; kset i (i + 1)7 \; P2 B  j& B5 [7 y
]
2 W" D$ R; Y; L! \: m- U9 dlet k 0
  o5 S4 X3 S: Ulet new1 0
' K) K! F1 N0 i4 Q1 Rwhile [k < people]
3 v) `4 D4 O% |, Z7 J[
- c8 d9 {. Q- z4 x/ ?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)( G. P' T! ~+ F/ W9 k
set k (k + 1)
. N1 x' H  x2 K; P" q]
5 Z5 e8 {$ a- C' W" w2 @* H. qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* p3 S/ n7 u8 [% Z. k9 Bset global-reputation-list (replace-item j global-reputation-list new)
$ m" Q. n7 H6 a0 k2 |set j (j + 1); x$ F& u/ a6 U" r
]
4 @9 F9 r/ q/ s0 \& ?/ nend
7 a% u8 Z1 v, m9 t- C( a- F% b% y! M5 p' Y- W6 L, d; Z6 Z

2 y5 W. u# t' v. t5 [3 ]* M; _1 z9 [# H+ ]& Z5 |! x
to get-color
# K) _- Q. y9 }! u4 L
: `! f/ D3 x% c( P" l+ }! c+ cset color blue

% m8 ~" T  J: Iend
  l/ @6 A- M- W& E% G) I6 f, P7 ]8 E' _
to poll-class
6 U$ L0 B3 p( V8 W# w3 Xend' L- X; H; o9 I. i  u" W, s$ A; v

9 g: E3 }  g7 [$ Y3 ^to setup-plot1
0 K* s% L" I1 S/ B. L% d( o' C5 c4 w5 M: y; F6 v( Y0 [
set-current-plot "Trends-of-Local-reputation"

4 ?) N( R" p8 E& K. a! H  ~  Q) k/ U1 P% G
set-plot-x-range 0 xmax

# ]  J0 [+ T( ]$ N- M* F/ M' w( p, l& x7 k+ A. h1 l9 {* O
set-plot-y-range 0.0 ymax
# v, {. w/ M1 Z* w1 d; A# B/ u
end% C" X/ _& k) T: Z8 c

  A% @' G( S$ D4 l% Ato setup-plot2
7 C8 W; S4 V& D2 B, E, T: V7 J$ u( D5 F+ J  g
set-current-plot "Trends-of-global-reputation"
: }2 y+ ~* V8 G' h4 v) u
# u( y" m2 F# m3 |
set-plot-x-range 0 xmax
" n, u2 T3 J; V# i
) _" X9 Z8 |* F1 _3 \7 p- n
set-plot-y-range 0.0 ymax

2 f0 W4 ]' G. ^$ f- }) Y& Uend
: T% [- D( {/ X) K, r$ P  a  k! h  G* J$ Q. t+ E3 `
to setup-plot3
' [3 d  ^* v" k) P1 `; G" f+ Q) e. g; T$ z1 e" s, U+ b% U
set-current-plot "Trends-of-credibility"

+ }& o0 {7 y( L' S" d- I/ B$ U0 H  M3 F4 Q
set-plot-x-range 0 xmax

0 l' g9 g% S. u7 L+ ]* a. e
7 o: B/ F. L* S8 m/ a6 sset-plot-y-range 0.0 ymax
$ m: b0 ?% E: B) C
end/ k. ]- e6 @4 x# _  k% ~
5 Z* j/ T. Z. g& w3 T
to do-plots
6 i7 J& W  X1 S& [% p1 Oset-current-plot "Trends-of-Local-reputation"" m) I0 s/ h$ L
set-current-plot-pen "Honest service", O; b; _' e7 L% T8 ]) q
end
' }8 F. h; _' p
3 V3 }* x: P* m/ B: r[ 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.8 `/ n( I3 Z5 Y5 V2 b6 w5 w3 n

' ~6 C$ p$ a/ s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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