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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:, x0 X) e' G5 F" A
to do-business
7 x$ V# O# M7 [& S) ?& M rt random 360
5 W7 z+ u" e" Z. M7 y fd 12 I6 T6 H; K% W
ifelse(other turtles-here != nobody)[6 q) G% t4 O  I" L
   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.
. A4 P7 f; c9 m8 {9 h1 P, S; @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# X+ R  B$ V* s& x6 Y: I% z" j6 X  c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. v( v- d/ e) E, G! M( X' ~2 U
   set [trade-record-one-len] of self length [trade-record-one] of self; O( u- G& }+ \: }8 E6 X1 E1 ?7 s1 D
   set trade-record-current( list (timer) (random money-upper-limit))# o* x; d- O( z$ d; R9 T

* p$ M; s" k; b. c/ U" k$ e$ C7 G问题的提示如下:
' T) i* k4 R; |. ?  K0 w1 W0 J) z% b5 _7 r- D1 X
error while turtle 50 running OF in procedure DO-BUSINESS
  j6 c) v7 e  ]% L+ L  called by procedure GO& `4 I- f, S& [& n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) B1 B1 j$ T$ d1 G0 ^9 ?) r# k
(halted running of go)# f. ?; ]: z8 A- X; ~7 A
2 F3 _2 Q' G- o: s/ ~/ H- p
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~~
  [7 G0 `3 x9 ^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8 e5 L( O3 Y- \8 Z3 n
globals[
0 g+ l  r; a/ w  G3 ?- rxmax. m+ L3 i8 D% V3 w
ymax+ j% k& ~/ k0 P; W) E- {2 Q3 g" ]2 r- g
global-reputation-list; m& F9 n7 {9 G# V+ P" _/ b
) n4 n" N5 Q9 x5 c% B
;;
每一个turtle的全局声誉都存在此LIST1 m& ?' A+ a# u# a# v& \% i
credibility-list* Z: F; u' _" O5 {1 E
;;
每一个turtle的评价可信度
7 f4 v2 \6 p9 E* M9 C6 \. dhonest-service
/ ~6 v8 |5 z/ w1 o: aunhonest-service
' C& O3 U) j. X) W9 i$ T$ N9 ?3 Roscillation( y; u' }" I. R# M8 y$ l) q4 b- ]
rand-dynamic% T6 G: ]2 q! }3 J
]- k+ R1 g2 A$ |+ }- i" Y- X" @& W
7 g4 V" |, m* n/ ]1 O+ e! U6 b! D
turtles-own[  W6 m, B  M3 a2 q/ a  F  A" y: w9 }
trade-record-all
# Z8 I& k/ Y% P) I* T  ];;a list of lists,
trade-record-one组成, s. x; z. W4 }
trade-record-one" f! K6 J0 b/ r8 o
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 q6 j0 T- ~8 z& C7 Z) z
" K( F# c7 ]/ Q9 K7 z0 m5 y;;[
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]]% A# G8 i) ^" T; p9 y( a
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]& R$ `/ M' p1 e9 p: ^) o) X0 V6 i
credibility-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
9 P" e) Y+ u% H: K! ~2 @/ ?neighbor-total
5 l- ~, A" {/ d. f) g, g8 d% R;;
记录该turtle的邻居节点的数目
9 ~9 ^! Y& _. Ctrade-time# H/ C# W$ Q; o7 I. p! W3 c+ X
;;
当前发生交易的turtle的交易时间! b% ?  t1 Z5 R/ b: ]
appraise-give
7 u% C- f7 n6 U;;
当前发生交易时给出的评价9 A6 E" h+ s/ t- H* S) Z
appraise-receive7 u8 R% V  Y" d  D3 F. c
;;
当前发生交易时收到的评价
! n, a7 r: l1 \& dappraise-time
( {& K. K. b$ O;;
当前发生交易时的评价时间  e: p, ~/ ]' W5 e0 @
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 l) x7 H6 K0 c( s
trade-times-total$ [2 g: }6 H) j2 q% {9 Y$ ^
;;
与当前turtle的交易总次数3 ]' n1 l$ A2 r# W  \$ T6 i$ |
trade-money-total: `2 S# w" `7 @5 Q8 f+ ]
;;
与当前turtle的交易总金额
' }, ?. s) n( c- Tlocal-reputation/ f! f- Q0 C# R! X. m) j
global-reputation+ ]* P( E  C3 `0 T
credibility6 b" C6 o. Y. v! h; g9 \
;;
评价可信度,每次交易后都需要更新% [4 \0 W7 t& N5 {# A8 M/ Z: Q
credibility-all
/ ]  d! l; {" |2 f& c6 b4 l0 o; @  B;;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( A* D* j0 r4 A% v! P$ ^

3 n8 |2 I, m' n9 ~/ S6 h;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
  _+ T' L6 O) g. ^4 @credibility-one0 P1 V7 Q: @) g1 w: a, X
;;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
% z3 Q9 g+ W0 q6 y4 i8 T1 T1 e3 l! sglobal-proportion
) P) }' h0 M; B' icustomer
2 G  Z+ L; \8 }% g( @! }- j) ycustomer-no  ?3 a) x2 d, Y
trust-ok
5 ^2 T9 h5 K+ T/ e. [trade-record-one-len;;trade-record-one的长度  _7 ?) e! w1 y- E. t
]; Z" r$ v* X4 v; M
3 Z4 A. y* [- ~
;;setup procedure$ v9 a/ A- p- c, v; T* r0 M# u# g

% t: r8 i0 |  }1 ~# ]to setup) O" K' |% s" ~1 U* j% c
: N2 Y+ y0 ?5 q. H
ca
) `  U, m% }! Y% V3 L# M7 {
+ @& y  ^7 I. y. w( _" }
initialize-settings

) b5 O4 U. o6 u6 ]5 d
7 \% P( ~4 C- m* d# O9 j3 tcrt people [setup-turtles]
. E. c8 T- r5 s
3 r3 M7 s5 X" U$ Z
reset-timer

0 G! G. C$ L" o0 F( I4 g0 e( j$ |( F0 @  D5 u- l
poll-class
1 n5 g- J) `5 ]5 ^: r

; I9 L6 b0 Z" s+ {) o( qsetup-plots

8 v3 ~# _( r& V
" u/ w; \4 E' m, T+ t9 i4 `do-plots
& }8 [! Z+ `1 }7 s# t
end
! @6 w( w) d  L# [  R# Q9 Q- f; {9 F! h7 E7 L, f4 B
to initialize-settings' S; L7 M1 l& |% V
* L( ^% Y5 K( M  Z# u
set global-reputation-list []

$ ~. \) _+ W7 U$ X. Z" o
/ Z8 c* }- K' w1 Yset credibility-list n-values people [0.5]

7 E1 K: B) j, f; S( x! i. G# F4 W! D. @2 O7 d
set honest-service 0
8 Q& d4 N1 [4 ?* _
! ?% T2 m/ N) B. j- l! D9 }- B! B
set unhonest-service 0

0 q6 q- j4 e! k$ X, C" u& U6 a# r& p
set oscillation 0
' G9 f, \; o. ^) r/ F  ^5 B

% i$ Q# e8 p4 N/ z8 t# x. s7 }set rand-dynamic 0
6 p$ e0 z$ s  S4 i
end! L  a. g) Q7 {0 Q% A! z
: r* f8 F* {0 J# m5 e* I
to setup-turtles
' M. @% D- W' S! q2 Lset shape "person"; }- c  W8 ~( \. P* H( w
setxy random-xcor random-ycor8 g5 \7 Q8 d: r( w- z
set trade-record-one []
6 ]8 V1 S% q. Q. f9 [

' T1 f# U2 z9 l( Y* \, [set trade-record-all n-values people [(list (? + 1) 0 0)]
# ^7 T6 v" H. L4 o: C6 ?

+ x: C2 W8 j- _1 s  j1 J8 \) cset trade-record-current []
1 Q3 k" S( X+ ?  w3 a9 {2 Zset credibility-receive []
) L' g4 @. d: b) j) ]6 t! [set local-reputation 0.5
$ E( S3 r6 ]5 E+ x& F2 eset neighbor-total 0
4 I0 `$ K: ]6 v; Hset trade-times-total 0
$ j, A, P8 o$ k0 ~& S5 ~1 yset trade-money-total 0
) w; @: ]# ~: Q, K0 iset customer nobody
6 v' V  y: ?- {& P% ~4 Bset credibility-all n-values people [creat-credibility]
! E* I' V0 U6 `6 Qset credibility n-values people [-1]
- c" t. N8 ]) h% oget-color0 _0 V" L7 Y- B& B* N& C
" g+ q' s/ z3 y
end
. F9 N' \5 g  l8 {$ O( a3 V: `" ~8 I8 A4 X) r
to-report creat-credibility, @) B# I# E, ]  ]. `
report n-values people [0.5]3 P, B7 `2 Y: {0 d' w
end1 N) b" O9 C/ h$ Z) y, i! m
- l, a; o3 k0 Q% k- z5 q' O
to setup-plots+ n$ @# x9 d' u' r) u9 Z- |* s" U

/ j6 I5 o# q1 |9 y3 V- L+ W) O  Hset xmax 30

: r2 V) L8 y$ N+ |/ y7 i) I4 r
1 Y6 e( F  }2 l% B7 rset ymax 1.0
; q8 c; W: c5 O' \! v; p
2 l; T4 k. |  b1 c% n$ ^4 K
clear-all-plots
$ V7 r& E; t1 g
6 v' K. Y- z! W- B  h
setup-plot1
3 C( a. o- H7 b
3 `0 S) l$ H( J3 ]1 n
setup-plot2
2 r' `- \) Y: C& w, I6 z
+ K( r  b: ]: L, _
setup-plot3

2 X. R7 Y2 }9 [- V( `4 r+ Send) F& M5 C* N: R; T! @1 K( H
9 E- T+ j" v2 ]- \2 p  U
;;run time procedures' Z; N( S  i, G

$ Y  C6 m2 k4 |2 F& m+ tto go& `; c- J1 z/ N1 W( b
$ t  z% i9 ?2 r# f. t
ask turtles [do-business]

) N+ P( r' y. f6 aend0 Q+ H  d2 n4 r6 K: A* F& m
; W( B) ]1 y2 s/ A
to do-business
  R+ @- Q/ T7 h$ x1 r' ?  y
, p6 q# S! v+ J( o6 K/ a* j1 ^3 Q

1 ]& d$ k1 c( D' i6 srt random 360

7 N5 F+ t9 C. ~0 Q0 S$ ?; u8 a( P/ F8 k# U# ?$ |5 H
fd 1
6 d( z: A. }% X, I4 S0 L+ r4 d

4 m5 H0 x0 d2 \7 h- O5 U1 |ifelse(other turtles-here != nobody)[

' s, }9 N  Z& ^+ D6 S+ [' }6 ]- J  B/ q+ j. t3 E% L
set customer one-of other turtles-here
; z, N+ T' b1 r+ t% ?- e+ `: n
/ ^  }  a# ^$ y
;; set [customer] of customer myself

( \. Y% X1 `+ g9 B$ S2 I8 ~. |0 ~( N: O; ~$ G
set [trade-record-one] of self item (([who] of customer) - 1)
) B: f" |) k* ?9 L) k3 B0 |5 K[trade-record-all]of self, C  M4 [1 X% r  G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, v+ `3 K  b% U' p/ P& k. v
$ q! b5 [  W4 o& [1 L& I+ s2 K$ d. ~
set [trade-record-one] of customer item (([who] of self) - 1)
5 \+ u* C5 I3 N[trade-record-all]of customer
0 l; `3 W4 V/ U
! I4 ~! X1 a' e9 o4 m, \* i% R* o4 N
set [trade-record-one-len] of self length [trade-record-one] of self

$ o. I3 S* `- v
+ {2 U9 H$ Y9 ?4 d) G" {set trade-record-current( list (timer) (random money-upper-limit))

1 J, i. k. G+ f5 [6 M$ a: y
- t! g, @8 K/ _1 R. _2 @ask self [do-trust]
, s6 @5 {8 f: m( O9 F! S;;
先求ij的信任度
* O& d% E9 B4 D8 V" |9 ~+ A% B2 f, O' O' |, Q5 A5 L% @
if ([trust-ok] of self)4 E" ^6 T" m# y# N+ j0 \
;;
根据ij的信任度来决定是否与j进行交易[
& K8 L- g8 O' N' u& I& a# i- G6 Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 M  `( [# p; w* T( g1 d/ ~- Y8 u& ^2 |
[

. n6 r3 r: o. P$ q- d2 H9 n
) Q2 A7 H7 @. r2 `; v* O9 k* e' }do-trade
% |8 |7 A# x, G
8 f. K5 F( |! c
update-credibility-ijl

  O2 `/ ^* g; H  @5 n4 W# i9 {& R" R( P; A2 f
update-credibility-list
- F$ ~1 j$ h$ ^4 K9 }
9 C2 p  G9 x& Y! _. n7 z+ m4 _" w
. s1 o1 k1 H7 A. D9 p7 e2 P
update-global-reputation-list

- L" l6 I, b1 j& l0 z* e  J' ]% b/ @6 z
poll-class
* v  ]8 m/ q. a4 p4 w
9 N1 ^) b5 `' v0 G& P
get-color

: }% \4 @! s7 A0 O0 h9 T; g6 {, R$ W
]]& C1 R3 c! z& r1 v# J
4 J6 ]) H% L; `  V  u
;;
如果所得的信任度满足条件,则进行交易
* C4 K5 \: n1 e  N/ o5 \2 ^+ y1 a: P0 L* @* C7 W0 L" V
[

% X- L" B& \( x3 f2 I% J
/ D* c8 Y/ G5 ?+ mrt random 360
1 R, a1 Z1 T& y% g
& o% u2 Z, p1 R0 i' U
fd 1

5 c8 f# F2 z: \" r: h' J4 L% Y& X. ]# O; L" w) q4 ?# o/ j' U4 [" W) K/ S
]

& z, y% j7 Y# A/ p' v  r
) [+ M' H6 I; C% yend

3 d3 E" a. D$ p: d% i. K, e2 H8 I# b& @
to do-trust
! p% m8 I! H  ]( x% f5 {set trust-ok False: o5 ^# ^* A, P0 q

1 o7 F, P' x8 j0 |! E6 [$ `
- C) x* _" V" f% g) L4 t) ?. I, Q' f
let max-trade-times 0
* T& e3 k1 S8 Dforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 F  j! Y  f- L1 v% xlet max-trade-money 0
5 ~  E/ k) _$ p' D8 K* v* b& [8 H* [foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) C% E, U. i8 L5 `- a' e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* r. e8 k/ }' |6 Y% \
7 |* t& b/ u$ q# n# ~5 V( v
/ b& Z2 l- S2 C* E2 ~  c
get-global-proportion
1 s* |2 x, q3 ]; n: p; j+ m2 E& xlet trust-value
0 [+ L. i0 I# R  rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 a4 x1 G. \: F# o# V
if(trust-value > trade-trust-value)
1 q7 k: @2 U; m) _5 [& u: }0 F/ O: ~[set trust-ok true]! k9 J" b! W3 J- p7 z5 i& `
end
: l0 D: W( u% [" N4 \  k2 s( x" N: Q; C, w
to get-global-proportion+ q( l% O2 G& R$ w+ {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ q8 h" @  |/ h! N& Z6 [
[set global-proportion 0]; W# M$ P+ p: a: f; ?/ }
[let i 0
" b0 {4 q. J. T  ^let sum-money 0
9 v% e4 }$ P% N! }& [while[ i < people]# L/ {6 K) c, k+ g' S. c
[  q0 \+ }3 i+ E# |2 K
if( length (item i
8 \+ m* ]1 O" k8 z[trade-record-all] of customer) > 3 )
' I* o  H" X! g; I) i- Y) m
[
/ A4 _+ h; @/ U& L5 ?. hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
0 Q% y; `' `; v0 J, ?" f" O+ B]
, K! F% {4 _" `% l6 W" R]
; P9 V, j/ t; [/ H( F% ilet j 0/ O3 G; _6 I+ ^5 J) ?
let note 0
! D$ j& I4 {9 B! S' ~$ n4 Wwhile[ j < people]
7 ]4 B3 V: x% s3 |  {[; l8 Y# _& |' F' T% F
if( length (item i
9 J5 `, N: Q) Q% R' ][trade-record-all] of customer) > 3 )
8 A% v, ^7 b$ e
[
1 o$ p% I) f( A& Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% j$ b3 `( Y) U# g
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 Z: c2 n2 l, |# m8 n& C! u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. {! q' n; d$ x! `5 c0 f/ y
]
6 @. P2 m1 S! {8 g]
- n' K5 d4 G: [4 l+ @# U8 Bset global-proportion note
6 _2 y7 K: T8 ^6 Z& Y  f]! ?% [( _. X, y4 A- q8 D
end, V# v4 s, i: `$ I3 |1 W# Z' o

, a# _( t/ F) @  h" @$ mto do-trade
5 P  B) G, t: T8 ?8 B' O4 V% U;;
这个过程实际上是给双方作出评价的过程+ A. _, u6 V4 v3 }- P' ~! ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( \. Y) ]& ^* c/ ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' T8 p9 a4 S( x/ h& e8 Kset trade-record-current lput(timer) trade-record-current7 h( n, p2 T4 \* v
;;
评价时间4 m! i) T. D% Y% k
ask myself [
% u) }) K% Y1 W! p) q: M, vupdate-local-reputation0 h* {4 P  J0 Q0 m% b
set trade-record-current lput([local-reputation] of myself) trade-record-current% X: O# d' p) a# Q; p1 O/ y) K" @- \6 s
]
4 `1 H# q5 ?' R/ }+ iset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# w9 E; a6 o4 }# I; {2 X;;
将此次交易的记录加入到trade-record-one5 T1 s8 L2 @/ r& B  s! m/ ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 M' z1 k5 l: S( l; D9 M
let note (item 2 trade-record-current )) }1 L8 L& p" X5 g7 P
set trade-record-current% X. a7 J; [% r/ [: A, U5 b
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 E' w: W+ ~, n! L7 `; tset trade-record-current; X9 ^/ y" L: ]4 o: @( y
(replace-item 3 trade-record-current note)
+ }5 Y" T  J  x4 y5 |1 n1 G0 \0 E" Q5 i& T
2 C9 \9 k1 W* W7 Q1 N1 n
ask customer [
# k# Y5 i- U6 E2 c7 D0 w( fupdate-local-reputation
+ X5 x8 l1 o4 {/ ^& Z. \9 r. C" Wset trade-record-current
+ A+ _" J+ V9 _( ^8 |(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; p: B6 }( h$ U& j: Q5 j( q]% _$ T  i1 v8 E: `. x5 }8 f
  [! E; W" |9 e9 X
$ n9 x+ J7 Z/ D+ _+ o
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" T* y" B5 \: |8 G
) m! }3 O1 c. a! }2 e  a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# d. z% m( `3 \6 `4 B
;;
将此次交易的记录加入到customertrade-record-all2 l+ K8 e, i& E1 I4 V4 t" X
end# C) S8 @: B7 O, G( W/ Y
* G, w7 m! g1 A3 B1 Y
to update-local-reputation
4 i8 v' o4 ^3 ]+ p: D/ H% pset [trade-record-one-len] of myself length [trade-record-one] of myself
( X. e/ p5 k: T# Z; h' ]: L' @, H7 l+ Z5 H
) t" W$ K! l; o$ _
;;if [trade-record-one-len] of myself > 3
9 M! O  B% Z4 g8 ]1 y& }$ n
update-neighbor-total8 X7 `7 `3 U' g* k4 ~
;;
更新邻居节点的数目,在此进行& L( l: {: j) Q5 E4 H
let i 3
/ y( \  @& Y4 B. wlet sum-time 0- }1 k/ x* Z# O8 t1 B2 D1 Y+ v
while[i < [trade-record-one-len] of myself]
0 e; e2 I# W; \! d# Z[
1 G* Q3 O8 N- B& O0 Eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ ~. B; t: A& Dset i: R2 v$ l" J+ c& k2 D$ w
( i + 1)

8 |" E: g4 N& k9 ]9 V; l]
5 |% f4 n# Q& L; |let j 3
! D! o! e. ~3 K: U% L7 d" Nlet sum-money 0
; Y, ~  X& o' J% g1 iwhile[j < [trade-record-one-len] of myself]
# a7 H" `* }  N& y, F9 {* c9 m' A[
2 U  Y9 O# g0 t8 @3 `- Q# h" iset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
6 W. ?+ }% g) `" r0 H# O# sset j/ c1 ?8 r% d& ?6 M
( j + 1)

0 b: l/ w5 K6 j3 f/ |1 M; Y# r]
' s# o0 M1 r0 Nlet k 3
" `% N; Y$ k2 }. \0 e" U4 ~let power 0
5 h* x* v9 y2 d$ a) f9 d2 @let local 0
7 k6 K, O2 w/ R- ^while [k <[trade-record-one-len] of myself]9 z# U+ i& o6 P5 C7 ]
[
9 `) J6 Q. J/ m) B. r: @. v* zset 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)
4 k& `8 Z  U: r' uset k (k + 1)+ @3 E! r4 U& A
]- v, }; A% h4 E  U
set [local-reputation] of myself (local)
, Z4 B, T! u. S/ z& z+ c8 Cend) t% ^0 [; ?7 f+ h

; Z6 G9 H* W; b; y; t' wto update-neighbor-total
' q3 o: H; o. x  l  R
1 K( |  v  Y/ Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- i5 U! T# J# |  g. l2 _. M- a2 D) P0 I* `7 Y

: `9 k3 O! i7 P3 Zend
5 |. j4 I3 T' X1 ~" y' ~! |% R9 R5 v- Z8 r$ a4 n7 D3 s
to update-credibility-ijl
/ |# C3 H' b" Z/ {/ j& F* @: J8 w: S0 U) ^5 Y2 R5 Q7 j: w
;;
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。
) B7 S. U+ X8 w$ tlet l 09 {/ s" S( `, y2 \% j
while[ l < people ]
  h9 T% I1 \+ J' L% x, Z1 D;;
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 p5 y  W+ I# z7 `, |  r" m[+ g! R) ?% j7 b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
1 R1 [8 z7 B$ |' |$ o. Nif (trade-record-one-j-l-len > 3)( o1 Y; y# S! d+ }+ R
[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
2 ]+ W: ?5 ^' N* e0 z# Ilet i 3& v$ X! T0 [4 C
let sum-time 0
) U: O' `' E* ?4 S6 V) r7 Gwhile[i < trade-record-one-len]
$ q8 H' D) k6 U. u" f$ X* O) M[& t- p. a. I* J: @6 _$ J4 ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% u; b4 v/ d/ Z5 \3 P/ }" S) e* M
set i0 C5 H" T6 @: k7 w6 l8 R
( i + 1)

; F! B- c, M8 s; K8 h5 X]
; ]  I: L& U1 S, j- p, Z3 alet credibility-i-j-l 0, v3 |9 ?6 f+ I  q& G% K
;;i
评价(jjl的评价)
# M% Z3 F' ^4 `  X  W. llet j 3$ W; H: W8 l' z9 v. M# K1 W+ q
let k 4& X( l, `7 {4 n, s; C6 z
while[j < trade-record-one-len]& Y7 x5 ^& S# F5 n+ {2 p
[  D; \$ [; Q+ h  P' f* V
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; n6 S" v& @& H
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)
8 b: r+ ?; E+ b# f% |# mset j# j! p, @% x" c$ r- y9 F
( j + 1)

4 x0 p6 N- |; S4 X. H. H$ ]6 h  u]
6 v) P1 O8 z6 b" Q# x1 ?* rset [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 ))+ x9 A6 F, a9 N4 w8 n6 \2 W, z
1 a; q2 `: N* v
6 q% G' w: T2 B- H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( c9 a% ]$ R, d0 _- d0 \; b4 g1 U4 a;;
及时更新il的评价质量的评价  R/ ]- W! k7 b: H* @) y9 X2 ]! A$ r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 ~" S. m) t+ Q. X8 `7 S
set l (l + 1)
9 m& s+ Q- [" j* T]* N0 U& j" P% D+ Q* _" {2 l
end
& @' x# _3 J; q+ j- T  o* v" r9 w
% @8 L) Z; n& Z1 U7 Tto update-credibility-list
) H$ R  n7 y8 R" z- Xlet i 0
) b' h; A* b/ K1 w4 ~- j& ]while[i < people]
0 ~  H! O( k' ~! y3 S" @* @+ L% m[+ s& M! l& J+ n0 i
let j 0: D% K; x, ?8 I7 }* V% C
let note 0
- m/ }* a9 D6 L0 X# F' B; _( }( |let k 0
! q. Q) ]# y' F;;
计作出过评价的邻居节点的数目3 c1 t. _9 o3 u# N
while[j < people]( E) ]1 `* z% r8 N% H, N
[
! T: e( k( }' D8 l) t4 Bif (item j( [credibility] of turtle (i + 1)) != -1)
  Y7 N* Y4 |6 g* K;;
判断是否给本turtle的评价质量做出过评价的节点8 x& i$ ]! h6 Z  ~- d
[set note (note + item j ([credibility]of turtle (i + 1)))
/ r6 f# u9 T1 B0 r" N5 I3 F;;*(exp (-(people - 2)))/(people - 2))]

' c# K- b. Z; U1 Dset k (k + 1); c/ w3 n. N+ v4 m+ W
]% Z& L2 I; \. A* i2 v( i3 a
set j (j + 1)% S! m9 I$ s5 H1 v
]
7 V; J7 b/ g: |set note (note *(exp (- (1 / k)))/ k)
; N" V7 ^' k+ e; I1 Nset credibility-list (replace-item i credibility-list note)5 B' L$ G. H& t) i6 e
set i (i + 1)
) j, m% Z! ?5 V' y* @]2 f  ^1 N( D( d; {8 r
end# a+ |! S$ |( f# h! _4 ]# h. g
" I' L" Q" `& r0 ~
to update-global-reputation-list/ N! \$ N3 d; B4 \
let j 05 L. [; d6 u, i+ s: x
while[j < people]
  y0 L% T6 A, e' V. [[
* o5 K, F( }  Jlet new 0; e& f* n$ I" f% t8 x7 H: M
;;
暂存新的一个全局声誉# L+ x& T4 K2 i2 y- j1 g( }: I
let i 06 v: S" p3 h1 N6 _; r2 P, p' e
let sum-money 0
9 I- w4 z4 A. u2 T1 {" ?" mlet credibility-money 0
4 g; K" I5 A  P) O+ r  F8 |while [i < people]
  M! h0 w8 D0 O# V) b7 h( n2 J[
2 v4 C% g1 ~$ J! e  W; P7 D% Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
/ {% I+ B6 x6 Kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% V% N* u$ a: r* v8 v/ Oset i (i + 1)
6 ]. C' j' A1 u]
: ]# k1 ~, j4 H9 \* Vlet k 0
8 d. o4 p/ r. @6 j: J5 l+ plet new1 0
$ R) A+ U- y+ z1 Lwhile [k < people]
) [$ X8 O) k- C  L& _1 S[
' s0 M0 z1 I! Yset 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)
' I' A+ Q+ S; q4 kset k (k + 1)1 i, o+ c: C$ s/ w' n7 X; ?
]9 X, d: S& O. W, C- I- g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 |* C- Z. T5 T+ Y( ^0 Lset global-reputation-list (replace-item j global-reputation-list new). ^# t. v  k. ^
set j (j + 1)
, m" M  \4 L( C, r/ t& Y]: r* K6 R) w0 F4 R, j
end
9 e& l5 N2 ?# ?6 _/ K+ A$ d% p$ w# @
/ ~/ r/ m9 p9 w* m  f$ U
( X3 O( g# p) t) o6 T0 I7 g
to get-color
2 @+ U% [4 F, N" t/ t# J+ h$ _+ h, y% z- V3 e! j
set color blue
  T/ P9 @3 G6 u, q
end# T1 P$ j" c2 G3 J: |7 F9 E6 b

8 ?1 I) p  k1 W: N4 ]! G) Qto poll-class
4 k  p/ D8 t7 G9 j$ E, r' @end
- l# A, L. }" S* _) j
9 v1 R9 _# I4 U7 ^7 tto setup-plot1# A; ]. m$ |; c& d! s
: ^. p" m1 l9 U: ?& b: {+ X
set-current-plot "Trends-of-Local-reputation"
3 R: h2 V& f% O- _  e
- ^( i9 {( O1 ]; c. s5 t! w9 w
set-plot-x-range 0 xmax

# }; v% Y  \2 {7 `, [  N2 `  Q& J$ s$ ^6 g  K- `
set-plot-y-range 0.0 ymax

& j& {; l7 |3 dend$ W/ m; k! W7 x9 R* |/ ?

2 H. g' m/ Y' B. d3 Y! gto setup-plot29 w+ u2 k$ _# `- |' F% Q/ z

9 U3 t6 e' I. s* M2 t: uset-current-plot "Trends-of-global-reputation"
5 C& {  G! B2 v( U1 ?
" M  d. ?, d% O& ^% k0 w7 v
set-plot-x-range 0 xmax
4 h( r3 n3 R4 w  C9 l9 U+ o

/ ^' h/ ]- p6 _set-plot-y-range 0.0 ymax
3 g8 b  f  n% \: N" B
end
1 _/ ^4 n0 y; e1 H8 h: r) ]! d0 ]  y. h* H
to setup-plot3
0 H# `1 f9 t! }. A; v: d  ]! |0 V8 C  h8 Q9 I: ~6 o6 i+ p
set-current-plot "Trends-of-credibility"

* P- b& o% U8 `) O* s4 R" \& M
+ M% p( o3 `+ w5 J9 j' n# e, Rset-plot-x-range 0 xmax
, k8 s' W* M, _( N! o7 R$ Q! I
/ x1 ]9 p) U: ?3 n) y$ L) R3 ?7 R) R
set-plot-y-range 0.0 ymax

7 Z0 k7 x" R! Eend3 k* n& U9 ^4 E. b1 p+ S. c

& }" a/ h! [' {; x: _3 bto do-plots
- N4 E& I. d! C5 V9 ~set-current-plot "Trends-of-Local-reputation"% J4 ]; W% ?6 G. c! t! L
set-current-plot-pen "Honest service"1 F. {1 x( i7 b) N$ O
end
( ?( J+ d* r& f3 g/ N
. v! V9 I% a# F6 z" Z9 t[ 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.2 V) R" `' Z# l( A) E
0 x' q8 P8 p( ]2 V
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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