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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:
4 R% [6 s1 E* m# M% m3 Jto do-business
7 J, ?. N7 s% Y3 } rt random 3603 h# N+ b7 f4 t1 p" u* z* Q/ }
fd 1
7 V2 N7 x. z* Y, U$ v ifelse(other turtles-here != nobody)[9 j' j$ |) T( J0 w; D& o" v1 n
   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., i0 W: b* P+ S) {: [: D
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 S. a& p8 g* L& r  c
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& b1 m) [3 U( O1 s& |" C5 N2 M0 l   set [trade-record-one-len] of self length [trade-record-one] of self! i6 I/ h! K8 u8 {
   set trade-record-current( list (timer) (random money-upper-limit))! S  I4 S2 q1 m0 d+ k

) D2 J! a% G2 k1 E3 v. _问题的提示如下:
+ H9 A. y$ m* y
' [0 q* _0 P- _6 y1 ierror while turtle 50 running OF in procedure DO-BUSINESS0 D5 p2 W5 G: \- O3 r0 v1 q
  called by procedure GO# a/ Y( g4 _7 B# v5 t  S
OF expected input to be a turtle agentset or turtle but got NOBODY instead.$ e8 c1 D) H$ T  [8 v
(halted running of go)
6 {! V% D$ N" N/ z8 x) G  f! T% v8 M; b( S+ g& e  Z* b
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~~& E% @. x% n4 b6 z1 D
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- T8 G& J) ^; X6 s9 A1 Z$ r- f
globals[6 J5 R" e7 e+ `  k* o( T4 ]# Z3 J
xmax& b3 W3 V, A( p2 L
ymax
; a6 g; W( }! }/ jglobal-reputation-list3 f# {! f1 ?+ U' B$ O
+ e! [* d4 S2 W7 ]& L* m2 g0 j" w
;;
每一个turtle的全局声誉都存在此LIST
* y: E' B$ O% u8 W" Fcredibility-list
* o' ~  T( g8 X. K;;
每一个turtle的评价可信度  r8 Q3 P' v0 y+ }: v1 E2 u6 b
honest-service
1 B( V, @# g! d" P# F: s4 |unhonest-service
( q2 F$ u( W, i; f' Ioscillation$ {  P+ m6 c$ N2 F7 R
rand-dynamic- W( v' [- e2 L
]1 H1 c$ h# _# h' V6 X

# H; S: D- H; h: hturtles-own[* r: h& g0 D/ @9 T& D) C1 s2 @0 r
trade-record-all
' ~. D+ c2 S% N$ {0 r2 l5 @% I) E;;a list of lists,
trade-record-one组成
' D/ I: r" z3 t# ?3 S* wtrade-record-one0 ?' L) e( K. O( ]) W
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: B0 a; P+ I1 ]- ]4 u& b9 U9 u! I" Q3 x+ {' b0 z
;;[
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 S3 W3 n* B& b$ w+ [3 E7 T' ]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]
$ T2 c1 R8 d, m( |6 ]! V0 d* Zcredibility-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
) L: R" c3 h  Ineighbor-total' T2 R7 r: u8 m1 R7 {5 d" e
;;
记录该turtle的邻居节点的数目8 y% j; h% G- o0 k
trade-time% _6 ^& h! v) t  f* l1 y2 j. K, O
;;
当前发生交易的turtle的交易时间
; S# H' ]0 f$ e0 l0 I! Rappraise-give
; X/ ~: v- A: v- N( D  l;;
当前发生交易时给出的评价9 K8 G' O+ \6 g- O- A
appraise-receive: x5 x; Q4 s* D: [: A
;;
当前发生交易时收到的评价; z3 N) i; p5 v7 O0 }& t
appraise-time3 s! B: N7 t" I% G- b
;;
当前发生交易时的评价时间
9 H& q* x( y7 H9 o' u  Blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 I& e4 e: m3 p- ]
trade-times-total
$ c( G2 S8 j" X$ p$ K! c;;
与当前turtle的交易总次数# `* O' [9 _2 p# W
trade-money-total9 L1 G0 u+ `8 y' X+ y
;;
与当前turtle的交易总金额% b( b% K" Z$ l9 _! W
local-reputation
6 v0 @2 v6 a. C3 r+ e7 }global-reputation
1 t- C: P* R* H; w2 Xcredibility
- u; B% @# `  \7 w;;
评价可信度,每次交易后都需要更新# b+ w5 {! H- g2 i! ]% R, e
credibility-all
$ v; l$ z6 B0 N  B1 z( `;;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! D" u% N, |, Z+ B
5 g2 ^2 P8 [/ u1 X  M1 X, w6 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0.57 C  M7 K4 V1 B6 z
credibility-one$ ]* g0 u$ ^& {6 Q; N, f  p
;;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. F4 ~6 v4 b5 a' D4 y5 Q6 q
global-proportion" W- w! u* _, [: Y; `$ U8 O) s
customer5 |6 S2 }" m- L' E1 _3 i2 U
customer-no* c) ~# C3 Q: C5 e" t
trust-ok
4 J" d9 V, L/ O6 l" W5 w  Dtrade-record-one-len;;trade-record-one的长度5 I6 Q( o, Q  z" Z# f$ v9 g7 d5 U
]  Y- P: v3 |7 i+ K# u/ J! T
8 o0 ~1 j7 F; `. o
;;setup procedure  @, q# q+ ~% x+ I

, u- D/ T# n$ S/ ?to setup6 i  Q4 Q' v* @; `/ D5 ]+ C
# W& z! u+ `; M' F2 \5 A/ m/ J
ca
; l: v! x5 X8 s! L9 W+ Y% k
- q6 Z" d5 n- p4 M0 d* J
initialize-settings

! ~4 ~  W4 \& E! |4 b$ u  o1 k9 l" l# k' D
crt people [setup-turtles]

$ f& Y* a) c" t/ E7 S  x% Q5 q7 t& @2 T2 A) U6 M* r
reset-timer

3 J. X" S3 Z- z2 K6 {& T
% E5 `# L! X+ {+ T6 ^4 gpoll-class
( t( {# O' S; V( N0 r4 Q

4 Z# w9 D7 W- V  Ksetup-plots

! L4 \+ x4 R8 ?- s
4 ^  H$ z7 U+ ^' mdo-plots
3 k& l: E# `( r0 u# E* l
end
" J$ }) u1 Q0 t
4 p3 @" I$ ]# ?* m2 a4 @7 dto initialize-settings. Z* \) \2 @: @9 b

; x3 {4 I5 U% B* Qset global-reputation-list []
3 X0 @! U4 N$ ^

5 A6 I* {- J, i, }* `2 Jset credibility-list n-values people [0.5]

0 }, g5 o4 A- w# a# Z; S9 r9 U  i  B1 j: N: @
set honest-service 0

$ R  j! L) x% J/ S* B6 Q7 M3 {7 e  I+ B
set unhonest-service 0
) K* T4 F$ r0 C9 R
! Z4 J  `! s% Y6 D
set oscillation 0
* V0 B9 T: H) t. d" D' k

- C. N& B+ k1 {3 S5 b. ]+ S- bset rand-dynamic 0

' ?5 L7 ?+ d, `' o' T; \end
( R) i0 c6 _9 p4 B* [9 M6 `" R: D) ^! U# p1 s
to setup-turtles
& d4 l" |3 S4 ]  [9 pset shape "person"
' `( w& J: }0 csetxy random-xcor random-ycor6 v, R9 ]( o3 i1 j/ G" x; R
set trade-record-one []
9 s7 |+ D  I9 r* n" @
3 L$ v& S$ m# Y1 [: R
set trade-record-all n-values people [(list (? + 1) 0 0)]
: v5 R0 E5 ?; y' ~) L$ j

5 K9 |% O' i7 P: N; P2 R( G! Lset trade-record-current []
2 [0 w) r! r4 p8 Lset credibility-receive []& x0 a/ n0 L* }
set local-reputation 0.5' l! i, n' J- s. \- O7 o
set neighbor-total 0% e% v2 I1 L; _; _1 [/ J- [  T, C
set trade-times-total 0
3 N5 ?# r5 O0 V1 D7 Gset trade-money-total 0
# s9 K6 c0 C" b6 T# b+ sset customer nobody! F9 W6 ]  y. }, k1 H
set credibility-all n-values people [creat-credibility]
0 y% M( ^$ y3 F3 d5 h# l2 bset credibility n-values people [-1]+ a; P' O3 J0 f/ U; |
get-color
6 _8 M# C, V, @) l" k' O

3 n) d9 [) c* o7 c0 C. P7 uend- [1 j6 ?# s2 I( ~
  X2 m/ f1 S  ^
to-report creat-credibility
' l1 M% y2 y% v5 b8 [6 Xreport n-values people [0.5]
) l' f; P$ n: M+ N2 T  l( hend& s- v/ ~) Q( J  k% k7 c

  ]  |. Q$ s% r& h. n. Hto setup-plots; c+ Y  A1 b# j# R' A
) i! e! a) @9 n8 Y0 Z% i5 i
set xmax 30

/ n! K: M0 k) }$ \' D3 c: o3 Q% V0 Y* g# q. Y- `, ^- q4 o
set ymax 1.0

! K) H( S+ b5 c8 x0 G) B4 i
" H: b2 X4 e  c1 W1 Q: p/ m7 K2 Eclear-all-plots
4 X. I) d( n8 }) i3 Y' M6 g
* E, N% M8 E9 P* q* B2 H
setup-plot1
7 p8 c( y3 r9 ?4 q8 Z

5 e4 I7 y3 e' {- ?) ^+ W1 @" t4 Ksetup-plot2
; K# f1 a, S0 c  A' p
0 v4 y$ X/ h2 J5 T- t0 s
setup-plot3
) \  Z, g5 f* @, S
end+ a% D$ r. k8 B; u  b6 ]: p. L) f# Q
8 }4 V' V2 j3 _; F5 N
;;run time procedures
# m& X4 L/ Q" r  \2 m/ q9 Q( S8 H( s/ t' l8 Z# C! g. }& W5 Y* P
to go
$ V4 K1 B. ]. g2 g- P  U/ t: L* i/ v, o) y# B4 J
ask turtles [do-business]
! _% i5 X. B2 u9 k  L
end
4 S0 O; {+ [2 ~3 V8 c
# Q2 w% n, e3 J7 S) H$ M% _to do-business ) o$ x! [! @* V# |/ l
- }( ]8 Z  Z8 _+ Y+ b0 L( _  {# C# C
5 D% s7 X2 D1 D3 h3 R" k5 f
rt random 360
! R0 _, W7 J2 U) p' j7 M0 `& m& q; |1 G
  b# ^! a- X2 O" V+ y
fd 1

! [1 }) k, V+ Y3 z9 C7 L
4 t9 ^3 K/ x; O$ I; R+ j! @ifelse(other turtles-here != nobody)[
* _5 b' O& A2 U& N3 `# ~7 S( T' F
, O& P3 H" b$ @' ^- I+ L
set customer one-of other turtles-here
* ]! j1 t4 S$ \+ F/ _+ n8 D, m5 K
; p/ o6 K/ B6 s* k0 i, l- @8 b2 ?
;; set [customer] of customer myself
1 V0 ]' j; L- k

( d+ W. _2 l3 ~" }set [trade-record-one] of self item (([who] of customer) - 1)1 Y, ]& V; X2 Q- ^
[trade-record-all]of self
4 y. s9 R) ?) I# d  w* k& J7 j2 z;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, v, r8 d1 P: S' Y# q

- G  }' h. y- _set [trade-record-one] of customer item (([who] of self) - 1); l+ y2 G7 K2 l; I" D
[trade-record-all]of customer

0 y7 `: k9 ?* K8 ?9 q( p7 I& ~- N  D; b$ L* r" x5 d6 g: b6 G
set [trade-record-one-len] of self length [trade-record-one] of self
: ~. r: n4 j& R3 m
0 f8 V6 U& V6 K! G/ `6 S: u
set trade-record-current( list (timer) (random money-upper-limit))
* W  M5 ?& i! h7 C" |

  F% W7 d+ I; v  Rask self [do-trust]
0 L0 V+ H( c! G5 w  y* ];;
先求ij的信任度) w& Y5 {; C5 `) t
" ?9 t7 E  b. o5 r+ ]* x
if ([trust-ok] of self)  i$ m/ t) ?  p
;;
根据ij的信任度来决定是否与j进行交易[
, \+ X; T/ Z8 Z) v1 {9 b! R& Z4 task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- h% Z! ^9 c# [: ]& ]5 e. V0 e8 h" A# n+ V% J- Y
[

3 t+ |$ o) W6 w% [' x& U
* e: u2 J- {1 |: c3 d3 gdo-trade

, o. w! f) k$ O, f" C' W
, A3 f% }1 D' J$ E/ C" y/ W) Bupdate-credibility-ijl

. N: b2 B3 Z) t6 Q
7 w( x% m1 t! F1 c) Q( N0 p3 ^2 \update-credibility-list
5 Z! {6 ?1 u! t

- S4 w1 ^5 x' P) d3 l7 O, x% s: Z8 K' v/ w7 J) O
update-global-reputation-list

5 N" B8 k& P1 u# x+ S+ |8 h
+ y0 n0 t2 C' V- c7 \# E3 n: _& Npoll-class
: t9 z8 c/ G7 P
  \1 w+ J* U! ]9 U) M- B
get-color

; e+ o# U$ T2 }2 \, O/ u
$ a* t* x4 X! n8 Z( \$ y% F]]
- N/ w: y1 }2 \/ H3 i& z" y" O
" E* ^! v9 `+ J; v; H6 o8 A;;
如果所得的信任度满足条件,则进行交易
/ W) E& Y0 p3 v; @+ N& i, P/ X5 e; B7 n+ n9 V' I, N4 I
[

8 E& `* u! K( ^, d# B9 J  Y& d% c* b, r/ y4 Z; C
rt random 360
* j8 I: }9 }5 A7 f8 D& H3 z

. C7 L" F+ L% V6 ]fd 1

: t( @6 ^" \3 v- K& Z& w
0 j4 {% m, P/ J4 ~3 q+ U- S]

' o5 J4 s3 A- ~5 V
8 K4 K2 P8 k% m; N3 E* ]  c( l7 cend

( s8 k0 Q% E% v
$ |4 |/ T! e; t7 \- z0 H% Pto do-trust ! G8 u) {3 q. }
set trust-ok False
9 Y( V* ~* \: M' W" M$ t1 E. o( m
% p8 {3 P8 E8 d. y

- J' ]0 c5 g% B( D/ ]( w+ nlet max-trade-times 00 G6 J3 |9 [5 ^$ e  ]+ A% u, j
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]' b, F& O5 K6 f7 x2 i
let max-trade-money 0
' \" U1 W# d& D; oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* E8 i6 s1 q( J- t6 dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 s% {) y6 K  e1 i( q" u' N7 h
3 Q. c) |7 e- C0 |, b

. L0 j# p$ v9 x# {! c; p1 ?5 uget-global-proportion; c+ d3 C5 l* K) Y
let trust-value
- f  m, C8 I  Z7 ^* H3 ?% a0 wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
4 o6 b, c1 v: l+ d& Q9 @0 ?( T3 B6 t$ G
if(trust-value > trade-trust-value)% ]: @( E6 U! e9 S$ O
[set trust-ok true]
, u. N7 x$ a: R+ x" [- Oend1 P+ l" f* Q. Z) _
2 X( s9 f* y+ L" ^3 ^9 }- O7 F4 v9 p
to get-global-proportion
' G0 Z8 Q. ]9 q& N! l9 W6 _' T; Xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! Q1 y. t- g# W, g( F
[set global-proportion 0]
! N3 O- N8 d0 A5 |3 y0 T4 c[let i 0- L9 {/ h6 r/ v3 u" I& e6 M2 ~
let sum-money 0
( N' u1 X3 d+ l9 S* O1 h9 o) Owhile[ i < people]( ]5 X, _" ?3 E
[
. n! m: ^2 i+ t1 \* ^! Yif( length (item i
% R- q6 n- P/ A, [[trade-record-all] of customer) > 3 )
" Q% l% Q% a: t- |5 p2 V, W. V
[
  E+ a6 r, A! D) z! Q( a: j  sset sum-money (sum-money + item 2(item i [trade-record-all] of myself)): Z' D: M% A7 |7 k
]8 |9 `5 z, s/ S! ?9 F7 b* m
]
9 M$ q1 @" |' s( e7 ~let j 0
4 [# f* Q& F+ u$ j# l% t& x+ blet note 0% S0 ?* C0 F& s- C( k4 \! X
while[ j < people]3 T& k' U, K# {1 q
[
: |8 k% a  M( L, w0 ?) oif( length (item i
8 Q, {# e1 {: D[trade-record-all] of customer) > 3 )
" E) G4 T; @, @8 a$ T$ ^
[$ G$ ?) r, v3 L2 l0 s1 `
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ _, D! H2 R5 v) @" t+ n
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" u! F  i7 M' p8 d% u/ V1 z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 j6 l6 |& E. R% L]
5 {- G. t) _. g7 V, g6 V( U7 {]3 P- y$ j! V1 ^# \. W, s
set global-proportion note
2 E* I( d7 n: i]
3 Z4 l9 U& k/ T% I* s2 j6 n' P- H$ O# Gend
) {6 A. i! B, c
- V; a( v2 |. y/ V0 R/ x7 jto do-trade
2 F$ p: }1 A; K0 `+ ]2 {$ q7 E- Y: b;;
这个过程实际上是给双方作出评价的过程8 `' d7 ~; W! l; U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* V9 j3 A6 h/ ~/ D+ t4 C4 `set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* q# _- o* R8 ]. L' k" C& Zset trade-record-current lput(timer) trade-record-current
: n0 _& O- Z. N+ t0 u3 A;;
评价时间) n6 r* V/ ?/ D, c
ask myself [
, {6 E4 n: Y5 @: |" U  ?( eupdate-local-reputation; e% N! p! M# W( }
set trade-record-current lput([local-reputation] of myself) trade-record-current
- z! Y8 H3 j. i8 h6 a; n3 F6 P+ A]
% v# X  Z" G/ R/ @7 Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ [; i! J% ^# ^) T9 R( ^3 w& w;;
将此次交易的记录加入到trade-record-one
, _; X3 U+ Q( T6 T7 Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! ?. p" h+ X4 R% f: P+ s% F! ^let note (item 2 trade-record-current )
- R0 ]$ o) C1 l0 A: z+ uset trade-record-current0 q; X7 n# P- I! Y! \; X
(replace-item 2 trade-record-current (item 3 trade-record-current))
# g& ^' k- i4 C, P9 L' y
set trade-record-current4 R/ l  U7 O  M
(replace-item 3 trade-record-current note), t6 K6 N: T# m

8 v- m& s. d- U1 t' j8 g
/ ~# F9 `9 M$ p9 P2 b' j) _
ask customer [
/ G7 N) b; w0 L1 u9 t" z1 \2 fupdate-local-reputation
+ l  j6 p! l; J/ P0 }set trade-record-current
  e# y. n) V% A, Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

/ g+ n7 z) y0 e% W6 t' k]
- x* l+ M: [% @
, ]  t- o0 l0 I7 k) M' E

% y1 ]+ i; `; q3 U# k$ [- }4 x3 {. Eset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer1 `: ^( H' o' }( y
% r2 g7 v+ e* Y8 N8 s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
9 W' K. c. I$ u2 n( p) C, b8 h;;
将此次交易的记录加入到customertrade-record-all
) I' G0 [8 n5 T4 L  D  Yend
- j6 D& m& l, R$ J& E6 {6 @) q  v. m' j1 U. w
to update-local-reputation8 w8 e' o) }( H2 T+ s
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ `* H& e% d) [# v  {/ m8 m* _! M1 H* i
# t# c& B6 j! R+ l+ K$ {
;;if [trade-record-one-len] of myself > 3
) w$ _7 [& v% v, n+ ?
update-neighbor-total
8 Y6 R# k' i( A! ]( C8 X;;
更新邻居节点的数目,在此进行. s% `) ?' p4 r# [3 @
let i 39 _# V& x' }- B: [! G
let sum-time 0
( v* ^) `; ]+ t% ~while[i < [trade-record-one-len] of myself]
8 Q" p5 D$ q" e) V# b+ F( P[" H6 f8 v6 i( g6 X: z: |( g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )  L5 t& X7 K4 a& N
set i- ]! G' @, h; v7 X
( i + 1)

' q7 c& f! T8 e1 x]
% O( G# V) s0 h6 q/ [let j 3
8 M& E) I/ W) i$ z- x: I* Glet sum-money 0$ M9 S% H( e( Y# R
while[j < [trade-record-one-len] of myself]# J0 E. a# V1 C8 U9 z
[. x9 Y% x  Y) k7 e9 b8 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)" ?! Z, `! K' t" P. O5 I
set j2 `; x8 q8 M7 c, d
( j + 1)
. K) P0 n: G" p9 L4 H
]
* W6 m" t& F6 ?: Q0 W4 v, ^let k 34 H! J1 Y6 g& P2 A2 A5 @
let power 0
$ o3 M3 w# c$ _9 O7 Slet local 0
' i8 l% w2 {+ B- x! i: Vwhile [k <[trade-record-one-len] of myself]
1 c  H' T* |; r! i[" c! n4 E* @; _2 c, F- l3 g1 o! w
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) , b9 N3 S- q- K
set k (k + 1)8 C0 H) O: I* ~) E0 D0 P- l
]: ?% s; ^$ s% }  G
set [local-reputation] of myself (local)
3 A7 w: J0 r5 B6 }- Qend
% @7 I( Q8 Z. o' ]) k) v7 M" F" i$ l# X. i2 K: e  {/ c2 R
to update-neighbor-total
+ ^, A4 J# d& _8 e( p) j
" ~3 ?. e5 w& U) Zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
0 I4 J% L1 R# p% i7 r; O% ?
/ ?7 a# c; [; N2 g
! k- `6 P8 D5 Q9 r3 Z; ^  w; _3 f" a) @
end
! {  A! |" {" _, m& _
- e5 n2 L# x7 q* q. `to update-credibility-ijl
/ ?' ]; t' J. b! }% l& X" d! E1 o7 S# s9 m( `. z
;;
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 b7 V: B2 J" K: i! P" X
let l 08 q  q+ f2 L0 C' R! g
while[ l < people ]: j$ v9 ?7 D2 a) 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
8 w. O* c: |3 K' B: V3 \& C5 W[( c6 u% ?2 O/ F. E7 f  B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& j9 l3 [" n7 L2 Kif (trade-record-one-j-l-len > 3)
2 A- N. |) x  U[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; j6 y; Z( v$ |
let i 36 D! x3 u. m$ g, C
let sum-time 0
; L* k) i# _% I: R7 i' W6 v2 r$ Kwhile[i < trade-record-one-len]
. r4 E- h- G: S7 O, ][
, }- U9 I- G% q2 ^! p5 ~, U3 nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% O" L" ]) L5 m3 Sset i
6 c+ X3 W$ M7 r" O# G( i + 1)

# I9 l; u6 ]: z/ s]
/ q* D1 l' a- C0 y9 Blet credibility-i-j-l 08 a4 [1 ?, y; m( K  J* t. H' c- H
;;i
评价(jjl的评价)& D" o0 G* G* g8 ]' l
let j 3
. |7 f' }/ a7 c% Q5 llet k 41 r: {& ^- m/ E% C4 i$ a! k- q
while[j < trade-record-one-len]
+ T8 }& X2 ?; Q7 E[4 w6 K% d0 W) f! s
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$ O9 G$ Q. m& @0 q
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)
% \/ E3 {6 A. ?4 i* T  Eset j( ?$ o) f: h, c" m1 l# ^
( j + 1)

, W( n. U% \7 f) u/ R% E* w]
5 R' E" r8 K3 k) qset [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 ))
% r0 V, Q* |: Z+ ?7 r7 y1 f) g$ [# x" @/ K7 P
& G- F: i4 W8 O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( T7 L7 \; s& `' T& y;;
及时更新il的评价质量的评价* V0 f+ M$ y. g& _5 Y
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& F9 u8 `! l; B' C/ X! f
set l (l + 1)0 G, s$ V% @. Q" @
]
5 U/ x3 S$ c. q: k. zend# Y0 ~  p" [7 n

2 L  s. p3 p1 \to update-credibility-list% O3 I- ?. V; j) Z5 J+ t# c
let i 0
3 q% R% `# T2 R! [6 swhile[i < people]5 Z% H# p" Q* M1 X+ t
[1 K2 z9 [3 F) G6 S
let j 09 w$ n+ U9 q. [4 b3 B% d) |$ j
let note 0
  J3 w- p  P% M* mlet k 0% B6 r; D7 }# _5 R/ {. z
;;
计作出过评价的邻居节点的数目
* A4 {: M8 {  E  T! Qwhile[j < people]9 a7 B: @/ ~* i3 D1 \% g
[0 }; v$ H5 d+ F% P! @; l
if (item j( [credibility] of turtle (i + 1)) != -1)5 G' D+ J1 s" B# Q- _! _3 n5 Y% F- R
;;
判断是否给本turtle的评价质量做出过评价的节点* q# P9 |- w( l& b5 |' c" h" U9 M7 e
[set note (note + item j ([credibility]of turtle (i + 1)))
2 z3 V: U/ n: Q/ m;;*(exp (-(people - 2)))/(people - 2))]

8 B9 b( f# b* gset k (k + 1)
' {* W5 ]3 a' J8 S5 Q# y& x( m. i$ g]
1 S) Z& [2 t% F( d  b4 w- Wset j (j + 1)
7 ^- ]  n9 K- j7 c]) c7 r* }7 i9 K5 i& K/ O1 H/ f8 Y
set note (note *(exp (- (1 / k)))/ k)
% a$ E  s, ~$ G6 @set credibility-list (replace-item i credibility-list note)2 O2 x6 ?7 V/ h/ y; ]
set i (i + 1)1 n/ q# O/ H5 ?8 L+ u' o
]
  P. n. Y3 w: R! x/ `4 }8 V/ R* Fend4 e" j) Y$ G# e8 N

2 @, L( r- s" J, E& fto update-global-reputation-list
- e" E6 r- ?$ y% r; Zlet j 02 c( j( f; u* f$ L" O- W
while[j < people]$ w5 m1 l/ l- J) W) e- t: y
[6 w- B; _7 g4 f6 q
let new 0
1 V4 X1 V; G6 |;;
暂存新的一个全局声誉
2 d' [- ?1 e- d. @! Olet i 0' G6 H: j4 ?- Q9 I3 d" ^
let sum-money 07 B  t; N( x0 I% z
let credibility-money 0
1 A; O5 g, w' V. B( M/ e6 n- Rwhile [i < people]
( y1 q  Z' O0 p% o[
/ `( Q' f# s. C6 Jset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 U7 l4 u+ T, Q) g) h! J
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 ]3 p. p' Z* w6 {& U
set i (i + 1). j9 O0 D3 Y# {# N
]8 a5 @8 I6 x# {  S
let k 0# {3 h- Y$ E# M3 G
let new1 07 n. U- L2 Z  |! ^$ b) |
while [k < people]4 B2 Y- M# y3 h6 H% z- B
[
- |: d' Y5 I, N! Eset 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)
# N4 P, @! P4 O8 b% j1 }$ x& j. mset k (k + 1)
+ e  l; E. r  k]2 ]* @& @5 J! |  Y' d* X
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) - ~0 M# a& U7 n7 V; }
set global-reputation-list (replace-item j global-reputation-list new)" l/ l; i( {7 r. D2 H9 K
set j (j + 1)
# o( j7 k( i* f$ u% \  H]6 h0 c* `' Z& l
end
8 g/ `- A4 i* G9 b" R9 T; N& [
* F% y% K9 r; k* {& d3 ?: @  G5 w3 J5 R; i
/ }% l  }3 }. h& S" U1 ]
to get-color
: j. }* P) H/ W( v- E9 t( O' D- H* ^  _- S
set color blue

( Z4 V" C. T8 x; `3 Send
+ D- c& a6 b' {0 f3 _: i
8 r4 e, W2 B/ w& U% j  W  Eto poll-class6 f. x2 j1 c) W0 k( F9 a
end
% _! ]+ f/ [: u! Y' C8 P+ ?( p
; e# D) `# z6 c  @- y' K" \to setup-plot1% }% ]' n  V' D7 ?" x

) K7 ]1 l" q( N1 }set-current-plot "Trends-of-Local-reputation"

# Z& B; D2 l0 H9 U. G0 ]
* ~; V, e/ D  bset-plot-x-range 0 xmax

# L; v( x) c( ~  {! i" K# g- d( B; E% D" p. d6 n; Z1 b0 q
set-plot-y-range 0.0 ymax
' s$ Q0 H  e0 E9 o
end) v* i$ V# [& Z  g0 `) ?: m0 m

/ O& C0 |1 e$ b" e  ]" Y) Oto setup-plot2; S7 f: ^( C' h$ E1 {' s9 k. m* w7 B
4 N: d& R2 o- ^! y
set-current-plot "Trends-of-global-reputation"

4 S- v8 M6 a! h( B- ~( F: s$ ~" `$ t3 c2 j, k; t: L+ }
set-plot-x-range 0 xmax

2 }( g7 X4 ?6 ?. Z8 f5 j0 {8 L, A! Y. J# d. V
set-plot-y-range 0.0 ymax

' e# S* g1 R) Z4 k. e3 B: W' k7 Xend+ z7 m6 Y( s2 r( ]8 `

5 M  o  a& n0 S' I+ S) ~4 v' w# qto setup-plot37 Y7 L9 q3 m( ^0 L5 G% J" }
+ {: U& X4 @/ t4 b
set-current-plot "Trends-of-credibility"

5 \  P" b$ u2 v/ G  x; I
4 \! p& w& i( Yset-plot-x-range 0 xmax
% T# N0 \3 C" z" k7 r. X1 E

7 |# T) `6 ^& w2 J3 f% w  ^set-plot-y-range 0.0 ymax

- W- ]+ A9 e9 n6 }- g9 N. Eend9 X9 n% @' E) |: G

, H1 W5 H3 {# c3 \" dto do-plots
; L) V( m& a% {9 N; C6 s7 C, xset-current-plot "Trends-of-Local-reputation"9 k) ?' \8 _. I/ a! I
set-current-plot-pen "Honest service"% v3 w/ E2 ?3 s: T  p$ X0 g
end
) w7 W# h; [: }3 M6 a, d5 `: k$ k$ w3 M, a2 Y. y& h) K
[ 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.
3 R# M* k, y4 ?1 j+ a& X7 z$ K
0 ~' n* K% j" J4 n% O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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