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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:9 p# S( b4 S$ y6 D
to do-business , i5 S' b- f3 w
rt random 360
5 I" P* y; q' g- z0 x' H$ H0 M fd 1! V4 g1 `% V2 {( ^) y0 p2 w& I
ifelse(other turtles-here != nobody)[- _0 A4 y3 E2 }) `+ U5 g
   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./ ~4 z* P6 j0 J9 ?1 d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
! F! P: k' O$ s) O2 j2 ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ q& q# l: y' X. y
   set [trade-record-one-len] of self length [trade-record-one] of self
! P/ g( `7 M* L5 J& U3 O   set trade-record-current( list (timer) (random money-upper-limit))
3 S* N& s4 b, w8 n/ M; O
$ d6 W  j% E" V) F# g; {$ b问题的提示如下:- [) t$ e, g$ w

: t) N; w+ n! e4 kerror while turtle 50 running OF in procedure DO-BUSINESS2 E7 R2 I" ]& ^7 e$ T# r$ ^
  called by procedure GO7 N; F1 x* F* w! s) |% {+ C! l7 s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.* U  Y. c" R! H+ a7 N$ L0 Z
(halted running of go)* B( O* r$ W" P2 n8 l4 O  V5 V( {. n

2 U* N: T; j: H" V: z/ u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~~# U* r: n1 N" z# y
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
& C9 H" @0 e0 ^4 V9 \/ N9 F! ]globals[( t2 I: C7 {0 t6 B0 ?
xmax* |! Q3 M# R  v
ymax3 @7 }& z  L( j& S) d8 f
global-reputation-list* ]) G- d- A+ ?& x( V  G

9 {( O& v# y6 x;;
每一个turtle的全局声誉都存在此LIST/ p7 W; k9 g( x1 P8 g# F
credibility-list) L" E3 n& F) u% g& O' t
;;
每一个turtle的评价可信度
) g2 W' H* z6 Chonest-service
( n0 r6 A# }6 L/ u& b. Xunhonest-service: P' V, G. f1 s; D4 R5 W& v
oscillation- C. \7 t0 m4 m! @
rand-dynamic
9 O$ k5 }; {  d4 I) n]8 t* w& `/ j. W4 W

$ |2 r% i5 t& ]  H" H, }turtles-own[
! h7 g! w& _+ ]. B8 U. Ntrade-record-all! R  z1 H" z3 |  I- x/ D
;;a list of lists,
trade-record-one组成+ F% n4 k8 w7 Y
trade-record-one
% @9 `& P8 \: 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' m8 M6 D3 j- |3 e4 z% ?, j* m

8 t4 i. R) a: X" ^/ r/ N. E" g& Q% e;;[
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]]
# P! [+ M9 H3 t4 Jtrade-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]
5 X" w7 ]; t! X; Ccredibility-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
/ x& ~0 p; ]: t: B; `: `( \neighbor-total
% K0 T, P2 G0 X/ G0 s;;
记录该turtle的邻居节点的数目
7 k1 p* ^* o6 T# z2 X$ b' n1 z! ktrade-time
3 f6 y. Y- {5 X& B8 h" X9 f& C;;
当前发生交易的turtle的交易时间( b& e8 @8 X/ l5 p9 j  V3 w
appraise-give9 T0 a# Q# Y8 P+ }# D
;;
当前发生交易时给出的评价
# c- p7 }. d- |+ T' y/ bappraise-receive
, q$ [: V5 O! H# |/ r  K;;
当前发生交易时收到的评价
* B1 ^! Y9 u7 L$ g: ~! w, qappraise-time4 q2 {) x7 N2 B. H' J8 f
;;
当前发生交易时的评价时间
! N: ~9 H7 O9 w  d  Z& llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
, S. d# ?5 P9 t* Ttrade-times-total5 `- F4 c+ q/ r9 }5 G; m& Y
;;
与当前turtle的交易总次数5 e3 M  l0 ]. j( D; h; R. e
trade-money-total9 N. ]2 u1 b# D* i/ p
;;
与当前turtle的交易总金额
# k, ]0 E2 [- s7 b7 Elocal-reputation: n# N+ k6 M% R. u: N! I
global-reputation
% `% Y9 H6 u6 o( I4 t% }% ~. S9 ycredibility& S; u% [3 s# q) {" d8 ^0 y1 R
;;
评价可信度,每次交易后都需要更新
6 A/ j2 M/ O0 P% Qcredibility-all5 ?0 W( m0 ]+ C+ M2 z6 q" O
;;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7 v) G/ |6 t! k( A  {3 m

) z- T* z/ b+ O;;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
/ j5 H- h) P9 d* b! @credibility-one8 Y0 T# W% \1 a/ j
;;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
% ^) f- Y. v8 ]# l, m! T! Z% L. Uglobal-proportion
! z$ ^. f% a; Z/ f! G& qcustomer
! q9 W2 w% n  {8 ~7 Ecustomer-no
  f4 P) o. V+ C: z" u( B. E5 ztrust-ok
& m& P  Q  o* b& t+ u' g' Gtrade-record-one-len;;trade-record-one的长度
" f3 m% F/ K! _; r7 Z) {  i. }3 }]9 ~/ |. l  p$ O7 c) ^
. x, M& W5 z  ]( p, G% i
;;setup procedure- W; R+ G6 M! s7 J" m$ m; I

# L# q/ y, |* }9 {9 ?% E; I: D, bto setup
$ d6 `% ^+ ~4 @) ?; ^
, k, f; X* X9 {% Yca

+ Q0 P5 a4 v+ A0 L  S6 V, I0 z, y- q1 a% w( P% X3 X1 m: a. r
initialize-settings

- O  e/ P8 i, w) D' O& H
8 t$ D6 t) `9 J" \( Xcrt people [setup-turtles]

6 }- Y3 P# j3 F2 r- ~$ t  ~
* _3 o. {, q0 v  {$ }$ Creset-timer
# b6 d9 t8 i$ f* \
9 ~* X3 B9 \6 B; O
poll-class
& f3 m- n( e/ G
1 h! d1 t. x- N' U. J
setup-plots

, D" n, j4 k$ L/ o4 `1 L) V$ o& A" ~+ x  V; s. e" l% i8 s
do-plots

4 C' {* ^* b4 w' Bend: m4 c) ]0 ?7 f6 d- f9 O

2 I4 a; P& a+ x$ Y- ^to initialize-settings* K( E$ J# \! u

9 f& q( b+ e0 ]" c% Zset global-reputation-list []

% |/ q+ v; j7 ?2 Q7 j
2 D: M/ H, k( G# m* vset credibility-list n-values people [0.5]
% E5 p9 _1 n9 R  }# n1 T  @) o
( \4 K! N7 S6 f: T. F
set honest-service 0

- c" T* x# @0 n1 I0 U' P0 r8 T) |7 \  m9 ]8 F
set unhonest-service 0

, l) G4 i) i! |, F3 d: Y- c" Q8 X. L% t4 w
set oscillation 0

4 U" E9 \2 ]. O' K( c# u: j' t5 z* P/ a9 I4 s+ [5 q
set rand-dynamic 0

: e, z$ f: U$ F/ B1 M7 Xend
) G% a* W; h. U" F% m" m, S( O# [5 ~2 X$ w* t7 @" U
to setup-turtles
" y$ x5 a5 S9 o7 ^2 Fset shape "person"
" {! D# \' j  e, usetxy random-xcor random-ycor* G2 |& @, @) t
set trade-record-one []" ?  l. n' Z; c
9 X" Y5 B, x7 g5 A
set trade-record-all n-values people [(list (? + 1) 0 0)]
3 M$ q6 w7 t" R( d4 n8 O' A# j
3 u/ G8 s0 ?7 T3 S
set trade-record-current []9 y/ r( d2 Z8 ]! d9 F
set credibility-receive [], `( r3 C( X$ y. C8 L
set local-reputation 0.5" y+ M5 X9 K7 _+ R! P) J0 t1 A
set neighbor-total 0
* y, }8 ]+ }( hset trade-times-total 0# _0 L0 d5 y2 s1 M) c6 t: {& O
set trade-money-total 0
" m( T- z, w7 n: |set customer nobody9 ~% X" E! i2 H6 R- T/ s" D
set credibility-all n-values people [creat-credibility]3 X( X, y5 `. U& p
set credibility n-values people [-1]2 W0 H" e8 `. g8 y7 O- x( @
get-color6 V4 _& |4 `4 }& e. `2 Q

# L+ q! z' E+ Yend
7 d0 M8 }) Z; o8 M- h6 M% `6 a% c$ u# L9 A+ y- I1 o
to-report creat-credibility" w/ v& O( S9 f4 d( n* S9 X7 Q' S
report n-values people [0.5]& I% P- e/ s! p8 U8 C# d
end4 O! h) u8 E5 A8 n- Z3 u
3 J+ A. {; n, N; z* |7 r; ^: S) o- r
to setup-plots
6 U) P9 K* n' M3 t9 Y. G3 k6 J$ ?  f/ p7 A: p. K
set xmax 30

% X. M' U, ^  ^6 \* w4 ^; n  u" [# f+ S) x: `* c
set ymax 1.0

$ S* @8 y4 X0 T5 V: @
3 {  w' b9 t/ q8 Z* G* ]3 v3 g/ {clear-all-plots
- v3 u8 M6 u4 ^1 l0 K
% @/ g! p, }4 `  Y3 m1 w
setup-plot1

+ y0 b9 m% J: \' D: |5 s, ]/ i, u' ^4 a0 C' ~
setup-plot2
/ K6 M$ P2 |+ j5 L9 H8 p5 e

# l3 c0 |( j7 B2 I% D5 {setup-plot3
/ F0 c/ f2 _( _% Y. a( z" m
end$ O4 Y- v/ Y% s7 |9 Y

% p4 o3 T5 H+ K0 o9 W# `6 X" Z;;run time procedures
2 X" x  Q! m0 R) Y% ]; C$ K0 D& M/ q7 Q: o- V
to go& q4 r  f+ Y  B7 F
( O! F* ^% K3 M' B* I3 O2 M$ x
ask turtles [do-business]
% F$ z( b- `8 a/ Y
end, n! @1 h0 e# m/ [; C* s

3 D7 u# A( g# g9 }to do-business ) ?' p" Q. E& x

1 k! H% m9 m5 L  H4 I" M9 f
) f; u% ], r* _  a! M- Lrt random 360
9 [( ?) i! H% ^! }- j

/ a) P8 K( T& [. zfd 1
( c# h% L5 p! Q, ^8 L& k# C# n& r
0 l. P: h/ v2 u0 p0 y
ifelse(other turtles-here != nobody)[

) O& X* y! w; c; l: y
. b. L6 _# s6 O) T  M0 ~' k) H% zset customer one-of other turtles-here

6 ^8 @8 \% H; i2 t4 @2 Y0 g' s  U4 r) S2 ], t5 E6 ?
;; set [customer] of customer myself

9 ?: Z7 t4 z' W% g2 m; _) m
3 D' W9 }) m4 j9 bset [trade-record-one] of self item (([who] of customer) - 1)
7 ]# P8 s/ S$ A. a) I% _[trade-record-all]of self
! G+ ^9 H  u  p) w;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  {$ i8 t& i8 N; c, ^' m) e  I8 P) y5 j6 h: i: ^' @9 G/ M
set [trade-record-one] of customer item (([who] of self) - 1)- F" A& c# K6 p: d, b$ A4 h
[trade-record-all]of customer

* s8 j/ e6 O* s$ A  C0 Y. s+ N6 }
) O; Y0 _# S* W' k  t" hset [trade-record-one-len] of self length [trade-record-one] of self

* d' [$ F' j7 f+ o8 {4 O7 T
8 R  \9 C0 L$ Z! Qset trade-record-current( list (timer) (random money-upper-limit))

7 ?& b6 N# D0 W# n* |6 ]
$ g: n" \  ?/ w7 a- fask self [do-trust]
8 r5 T* X1 E# S& {! s* K;;
先求ij的信任度( z; {. [, {5 z- F

$ `9 G' j* O: Sif ([trust-ok] of self)
6 w, M+ _/ l. t4 V6 M, S+ S: l6 G;;
根据ij的信任度来决定是否与j进行交易[
) o  K2 ?& C! d5 I) \5 e) s: dask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 X; W( f/ s# r8 i( J; M5 E$ I. K3 J, j/ A
[
, |5 {8 x& j7 g
# |9 P, ~* s7 g
do-trade

4 F' y' D* L* I! N  W+ @
- W% g( {" \  l: i. \6 oupdate-credibility-ijl

% d! Z7 q: y7 a0 `
- A% S/ _5 B% J4 Qupdate-credibility-list* F! n6 v4 D, N9 D4 V5 }& r
" }( v+ b3 O& p; u

  Y& `6 ?( H2 g. l; n4 w5 r8 iupdate-global-reputation-list
! z# n. Z/ {) v/ D5 H: e& h
3 }+ L0 `+ T' z$ r* w
poll-class

; d) Q9 H, S! V: u- h6 x) H' V. @" y* r4 o& O4 ~: }
get-color

+ \: d; c/ a( L9 D# S/ r. L
2 \8 F6 [3 M$ k: ]& C5 d]]# G% [& c" s9 `. ^

# ~) J7 F7 o/ H: ]- R, ]! G;;
如果所得的信任度满足条件,则进行交易6 y7 F8 W( i8 l9 j2 d
# ]1 }& K, B, \4 X
[
/ y# R2 v( C- F) w  P0 M7 g8 T2 M4 b% E
- }# [5 _5 L6 j' B, Y' Q
rt random 360
8 k, F& ^+ E5 p2 [

: t4 r. m0 d) @' J$ L9 c& ^fd 1
4 v- s1 W" [$ ]6 P7 c; g

2 M3 ]0 x) h3 v4 f* h' X( O]
$ g$ G) J: b' p/ O# T( w7 k1 Y
& X' A9 c" S. b; F
end

! i# ]* k& ~" |8 c+ R3 X  l
3 N) v5 O, h- {! T, |* Jto do-trust 5 d/ F" R% k6 v0 I
set trust-ok False
; n* S! G7 ~" \2 _1 V; @" s4 l/ Y# e& k- d
. `& S% x( a5 {& X+ m1 ^" e
let max-trade-times 0
8 d- L* O. c/ I3 Hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 ~" J1 W3 P# F" o* tlet max-trade-money 0
, Z% Q& H( M$ Q7 d7 L4 Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 ^+ u3 v6 S& _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ p8 x6 h% ~% V2 `+ Y2 ~7 m
3 r! M. A# T) ^

# B8 `- l3 |- i! Cget-global-proportion# B( d, q& u% d
let trust-value2 C- {/ f) n; y
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)
, E6 [8 Q, `! W4 d7 V- F" l
if(trust-value > trade-trust-value)
' G+ E" J$ n% M  s6 m[set trust-ok true]
% g; P; a- Q3 _' i" {, h+ zend
+ E% b' U& K, m# u! A
- [6 a0 f% A( `8 n6 f2 fto get-global-proportion7 C" ^. l- A0 n1 ?0 }( _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ |: \: D$ h8 r. h2 p[set global-proportion 0]0 \, t3 _! ?1 l$ H$ q1 l% L
[let i 0( T8 @9 V' A2 `* ^3 [# w! S; X+ i
let sum-money 0! a0 s2 u& ?' t# v9 S- w* f8 k
while[ i < people]
5 u" B7 `- ^7 X/ G[1 J) X. C2 O. j/ e, K5 l
if( length (item i; n4 z7 Y9 M4 V; b& r
[trade-record-all] of customer) > 3 )

, E. K1 w4 _& W6 k* r[, B: z0 k% E3 d  r
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 V, d7 W0 I* F2 Y8 P
]
) n5 {0 U0 w; n. C6 C]
5 ?  S7 c6 T1 `; G; L/ F' ulet j 0
% G' w- }/ e+ C& }let note 0
8 W) W% L+ e+ J6 S6 ]while[ j < people]/ _( f8 H6 M( B; V
[
) e; \/ t9 c8 w7 t7 uif( length (item i. L3 G1 \; V/ m8 b
[trade-record-all] of customer) > 3 )

& m3 u: X5 j, h2 z: \4 ^. Y[1 x8 Q* G$ G7 e5 `+ g1 m3 o$ q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- a2 M" n& C( [[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& p: R# l# K! a- m/ u5 n5 s! F[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% i( i* k/ ^5 e, l4 \$ N]
- o. o" q1 L9 n( H* R]
8 H' a0 G+ l8 y; D/ t- hset global-proportion note9 U( m9 Y2 n; O4 K/ \% T
]
, X0 o- k7 g! @& R2 Vend
0 k, g; I% z( K9 p# E5 i# g3 P/ o" V9 N' z  B0 M' `
to do-trade; L7 ^0 o  p. T- Z' A2 B
;;
这个过程实际上是给双方作出评价的过程
/ L0 y/ Y2 H) c, l9 ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: x/ q! N0 z4 l( l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- a8 {/ y; K# v+ Q+ |
set trade-record-current lput(timer) trade-record-current8 Z4 t- j8 [& ]3 B& M6 z! l
;;
评价时间
4 v; M5 S) r% |$ F) _2 W6 [ask myself [7 q9 Y0 w' b' v
update-local-reputation1 Z$ `7 J! u. m! `" N+ B2 ?
set trade-record-current lput([local-reputation] of myself) trade-record-current; y3 i0 E' l! l5 _
]
  @( `# C' N2 A5 yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ V* w% ^# A. u7 X, C, f$ A;;
将此次交易的记录加入到trade-record-one
$ D( L3 ]* ]# D" r+ Pset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ N  M! U' r, q, _5 a1 P0 S
let note (item 2 trade-record-current )
6 d; }5 W, H( \# R7 l+ eset trade-record-current1 e# t! W( G; O; C" Y- M
(replace-item 2 trade-record-current (item 3 trade-record-current))
! u. J; z/ |3 @1 ~* e9 m3 x) k2 L
set trade-record-current* T% J  w9 y2 ~0 |: R, }; K( r
(replace-item 3 trade-record-current note)
' k/ z1 x+ J. v6 c
( g' V* k0 Q0 q, f

9 l) ~/ j& z1 h1 yask customer [3 o, F) C! ?2 {) r$ z) r8 K9 U
update-local-reputation. R& J. [) G7 P+ t$ M8 q' p7 j
set trade-record-current/ G/ [. ?1 d1 u& B
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 K' `7 {! m8 L9 V; i1 K
]: B8 v* U4 w  |, l! q& t) s% f. T

) C3 ~5 S; Y* d6 e: P

; q2 Q. a/ w' Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" P# v1 X$ t" a- t6 t
" Z+ \+ [& N6 e& b) ?+ }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 Q9 E* D1 I) j6 |5 X1 C; w3 |
;;
将此次交易的记录加入到customertrade-record-all- B7 y" z4 d/ q: F) ^$ p3 s/ T/ K3 ?
end+ }$ b5 W: h* A. x1 {. e
& {1 z7 K- h  |8 [4 ]  |$ @5 Y
to update-local-reputation
% A, o4 }; D' J5 q( X( K6 Cset [trade-record-one-len] of myself length [trade-record-one] of myself
, @4 E9 O' T& M4 y& w5 c+ x  T3 U! k$ d5 X6 z
6 |, G; h- g5 X
;;if [trade-record-one-len] of myself > 3

7 R/ Q+ R) v% O6 J4 r/ Uupdate-neighbor-total" B& p6 z4 _+ Y2 h" d
;;
更新邻居节点的数目,在此进行
" G$ {7 {" e; ?5 r) S  Nlet i 3
8 J1 [; b) A1 f1 M: j& blet sum-time 00 x7 H: }, [% l5 K
while[i < [trade-record-one-len] of myself]
9 f) N9 m3 K+ m- M[' L0 L& |7 U, q$ I
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- ?7 l' }# V, Y( o
set i
5 c5 M7 p0 ~+ i( \/ J1 n0 k( i + 1)
8 t% O% n6 O4 I8 y( ?3 l
]% }! I# T- ]# x1 Y7 a
let j 34 |+ o& {3 q* d  |, e+ t* U: g
let sum-money 0
) i( i, b7 }* C6 h1 [7 j. o; Kwhile[j < [trade-record-one-len] of myself]
  Q$ v- R& J$ o, n1 p; W: c4 l[
2 E8 H# U3 K$ ~& H- i% wset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
' h- D/ X2 G2 L6 Z* S  eset j, _. k- C3 Z' S1 S
( j + 1)

+ {, ^3 Q4 r4 u* G; L% h]; c# N' t$ P- V: A1 t8 T( M
let k 3
; B3 Y( [6 h! s% s/ X3 H; W9 tlet power 0
+ f3 ^6 K4 n/ f! S) _( B* N9 x) d8 Ylet local 03 l  f& \$ e6 r0 K# e6 P, r5 V
while [k <[trade-record-one-len] of myself]/ s/ O6 B; ]6 h" G* ]
[* [6 R; E$ @9 n# u3 r; _
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)
. z$ E/ e6 ^0 Z' Tset k (k + 1)
) x7 d% s# h* J]! x5 |  c, f; t6 m( T
set [local-reputation] of myself (local)# k+ G0 }# G, \  D& G
end
' C" w2 e. t1 ]8 \  R8 K/ ]% s! S, ~6 r2 }9 J+ |$ C! W* R
to update-neighbor-total
  s9 R" l4 H3 [+ W; I' E% [$ j, H* Z$ h
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: L0 `) g) E6 S& H3 h$ g4 w
6 I: N5 z" o5 w" I8 O
* _8 H% _% T) F! U4 H
end9 P3 M6 Q. F5 ^7 a
- A1 y+ G. ?/ G
to update-credibility-ijl
4 E9 _9 K) @: \* B6 M/ i- |0 R9 J/ H4 I3 j8 E6 Y8 _4 ^
;;
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。( M5 n, P" f2 d0 M
let l 0
2 K# r2 a$ }8 @0 T- }& Twhile[ l < people ]
% f; E5 S* s3 V) N8 u( p! B; 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. |- @' J( D( v1 E' w8 X% X
[/ ^% w1 Y* [) A" u! E4 C$ F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% c5 C3 e% w! Z( l* Dif (trade-record-one-j-l-len > 3): |+ H! c& a5 V$ [. H2 }
[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
( J! d1 y1 Z8 g/ Ylet i 3# P! t$ V- |# A/ z' M- R
let sum-time 0% z! M. g7 b7 f" Q' c" }
while[i < trade-record-one-len]3 L" B9 I- i5 o" b2 S  z
[) m" M! G4 O  K) H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ l' s$ b! B# t  `0 N, J* ], h% }
set i
8 S: r2 t$ O- f& B" `* K( i + 1)
& p9 g2 F1 j+ U
]
& L) }% z% y! \! _* n. i2 T. Mlet credibility-i-j-l 0
$ {& U& r( {, V;;i
评价(jjl的评价)
! h& ~# |; q) {/ Plet j 37 u0 x+ }  f' Y  C3 I6 j% ^7 [
let k 4
3 J4 c, j( }8 ?: M7 p4 T) U- Ewhile[j < trade-record-one-len]
- o; ~7 K7 }$ k[
+ v3 X, W1 N9 Y/ Nwhile [((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. q9 P0 G. w; w2 q% N' C
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)
/ H" E% Z+ W$ J! B5 e- tset j4 k  y3 I7 r- f$ {& M) X2 w2 P
( j + 1)

' p" p/ c* f! q. W- R3 o5 }  c]' I) H8 r" W" u
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 ))
- I9 l1 s2 Q7 x( L5 U9 h
# `: K& V5 ?9 W/ F# q) z4 ^
4 ], |' `# ]7 G- ^) c
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; u/ f' u( E' e  {- w;;
及时更新il的评价质量的评价
3 C# ^: s  H: ~' gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# y2 r1 I  X& Q7 a
set l (l + 1). M1 `" p# [+ ^4 l
]
: C" e) U( q+ D1 y: P* X5 Aend" r7 i1 Y" }- K' c; T
* ^9 |) q/ ?- S2 d) f7 F5 u
to update-credibility-list
0 R* l$ q; D4 u0 ]9 {% Clet i 0
+ o/ G; B0 D! z2 s8 o  }; }while[i < people]& w0 J# k% c0 F( Y2 S1 d* ^$ ^/ S
[
5 R5 N  H" X. c5 T( Mlet j 0/ {- N2 b. m" Z" {+ m# L
let note 0
$ {4 r; V, K2 k7 M' X( \! Glet k 0
3 Y, L4 o8 Y6 [/ I;;
计作出过评价的邻居节点的数目' K0 R3 X: c9 w3 @! d
while[j < people]0 u, ?* J" b, Z& u. ?. C
[
% i& h; E# w+ C" [if (item j( [credibility] of turtle (i + 1)) != -1)
4 X* k7 H. a9 `;;
判断是否给本turtle的评价质量做出过评价的节点# o6 n8 I4 ^* o7 p2 g& I- p: m
[set note (note + item j ([credibility]of turtle (i + 1)))8 Z* X4 J$ [  c' ^9 P# Z
;;*(exp (-(people - 2)))/(people - 2))]
" q" m6 Q; u8 S% w9 R! y" [
set k (k + 1)$ U- \( q! g9 _$ k
]7 }' H. }, q7 H- B- e
set j (j + 1)( l4 x, D3 {! Z- ~3 l& u$ N
]
9 K) d- }) I" l& K  Eset note (note *(exp (- (1 / k)))/ k): l5 l3 Z- f5 T3 |- i) J
set credibility-list (replace-item i credibility-list note)  m; N) j" {2 o0 [1 ^$ W
set i (i + 1)
; p# L+ p7 ~0 J! c]& \$ f) ?6 ~: Z" H0 o; Y
end
( A5 K6 L* F- y) t' I' P. n5 b2 |: \& }# f# s+ u% ^) B* A' [( i
to update-global-reputation-list, X5 ]# N+ Q  E9 X
let j 02 R: Z7 h1 C' w7 L
while[j < people]
0 g& E. z4 c8 w! b) E" u[
3 L0 ~5 F! P1 r! s' ~let new 0+ m$ Y- |& N6 D$ a, t. u
;;
暂存新的一个全局声誉
! ^9 i( x) q# ]1 G8 O- H8 a7 _let i 0
& }# {; i# [5 B; Q+ k& |3 Flet sum-money 06 J: E$ J/ {7 g5 Q8 ~" U
let credibility-money 0
8 @+ R2 B& z6 z5 s  a1 a' G& _while [i < people]4 _8 q* g- z8 E$ y) ~1 g$ ?
[
9 v# I2 S' ^8 ?( i4 E; c& I& U9 yset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 `7 D; W( C% `! A, f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 v$ o& c7 r  B% ^6 [set i (i + 1)
& F, \* S! Q% s0 Z% c  c  _  D& ^5 C* e]; f: T  d8 k' y( o% `' M5 G% w# O( i
let k 0$ ^1 n: k' H# b% _3 V
let new1 0: B* [- |0 F8 ?' R
while [k < people]; q0 G2 |) W9 I, y4 h
[
# t! D& K+ d1 n9 t( H% F) p, iset 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)
# F2 Q+ q5 a5 e) G& c: G8 i# Hset k (k + 1), I$ J' Z, p  ]/ J
]3 S5 \4 V# w4 _( J
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 z! E* }1 b- k! I5 E+ d; Q8 cset global-reputation-list (replace-item j global-reputation-list new)
! a8 |$ ]5 w9 ], qset j (j + 1)
" h! f3 y0 u; |( N* K( m- u- I]7 R9 l; N, ^7 O: L/ Q
end
) E. J. a0 r' j$ d! r+ V5 J0 S; _
8 P( s8 J  T5 [/ F6 O( d. F9 N+ X; i8 c7 J8 w
; V2 X5 N, X, F3 G9 Q
to get-color
2 i) s$ I( p1 O2 L6 _  P. g
- u1 Z0 C' C9 O  J" sset color blue

. T% E3 ^- @1 a" v! z& I" ~3 u/ \end
/ `' m# E* M; w1 R
8 s; k" c  Z* ?! L& Z* T' x6 Jto poll-class
# d+ j+ Y+ z( e" p; l9 m1 Cend. a$ a1 T4 x. y
8 |4 B! W' c2 U- y8 }
to setup-plot1
8 j$ P& A8 \* w0 G5 G) r9 A- N9 ~
0 l& I- V7 R4 j! f7 uset-current-plot "Trends-of-Local-reputation"
6 H, N2 J' S7 V% \% }' C- {' E

/ E) R7 z# V- l* e& @set-plot-x-range 0 xmax
9 B2 p/ j* z  \6 h6 ]

' r% |0 u0 E9 X# Zset-plot-y-range 0.0 ymax
" e0 {2 D% t6 x
end
4 l8 M" `. x: W5 P- |2 y. q$ r, p# Z! B8 w
to setup-plot2
0 z  C) ?* F3 y& e( k
; o* E* x/ u. _4 j' wset-current-plot "Trends-of-global-reputation"
: C8 ?! e* D7 H; d- H; S5 t5 I
% P- |- [+ y' h$ L
set-plot-x-range 0 xmax
* J% F$ A2 [& A

* Q) X. c2 v7 D7 Pset-plot-y-range 0.0 ymax

* }8 Z# K+ L* {- _$ Lend" K8 N3 }% O+ x* @+ Z# ~

% k0 S' j! i! t2 V; ~to setup-plot39 ?$ r, b6 C1 y! w7 _0 n0 ?6 K$ X# {6 I
9 p7 y+ i) g4 k! w* T
set-current-plot "Trends-of-credibility"

: I. x5 Q+ \% p$ Q' s0 y: o. h) }9 Q) m$ I5 X1 ]2 j
set-plot-x-range 0 xmax
6 x! W1 K3 @4 f6 D0 O
! r$ [# g% I' Q3 ~2 \6 f' R
set-plot-y-range 0.0 ymax
, w; {/ N4 d6 B$ z
end- f, j" s6 b' G8 S. ]6 r0 T$ m0 {
7 b1 }( V7 w7 G( |6 \3 W; s
to do-plots
/ [# {* {9 u+ P( r7 Qset-current-plot "Trends-of-Local-reputation"
3 }5 b! }. ~. R  P/ W. D1 D% L/ jset-current-plot-pen "Honest service"
: m9 J5 G1 u/ m. nend
/ p& P! X  ~! s) U# f! ?% y0 R& _' M) J/ [2 z) O4 _
[ 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.
. F6 @: C: X$ H7 K# B7 v5 c' k6 J) L$ _
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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