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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:! x8 C5 h+ Q# {( V
to do-business 6 x0 y+ ?; A! U+ ]& t
rt random 360
2 C# C" |8 j0 } fd 1- c- Y5 T. D; M7 V
ifelse(other turtles-here != nobody)[+ m" g, Q' X" d0 {. f! r$ [
   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.
" h$ u4 o% Z) s* [. Q! C   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 B6 i7 x2 l  \+ w& i' G7 U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) G/ L1 W1 Q: ?' ~$ l   set [trade-record-one-len] of self length [trade-record-one] of self# A8 k( ]# o, ?, G
   set trade-record-current( list (timer) (random money-upper-limit))
" W. w- C8 N0 P0 L! `& A2 C) T. E
$ z2 G. {1 w+ ^问题的提示如下:0 ^( F7 P! n% _4 g! k. r3 p

3 v6 T' c3 n( W5 N" I: {+ werror while turtle 50 running OF in procedure DO-BUSINESS& o- I- s: [% |: ?2 P- j8 t
  called by procedure GO  I# Y2 E( w# o- Z6 Y2 p+ f
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, C1 M5 b" f4 J3 z2 b+ d' m- @
(halted running of go)0 j' X8 n" F; @  R+ c- w$ S
/ L9 i+ K$ G/ v0 L: k( L8 @7 l+ ?
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~~
- L+ x; R8 W; k. k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2 S( }9 c" _. a8 [
globals[
- S8 {  t4 |$ N. Yxmax. o# n- `( n, B; H1 V7 k7 [9 |
ymax' ~$ U" Y# t- ~9 X$ T
global-reputation-list
( u6 B2 m6 s5 Q& _3 a# f$ k: x
: x! l8 w" C" ~0 d- n% };;
每一个turtle的全局声誉都存在此LIST  h9 B8 L5 n. s# e% _
credibility-list
& Z  ?6 t( v1 e; Y- o. U;;
每一个turtle的评价可信度
1 g( B$ _& d$ B  B8 s4 ahonest-service8 f$ O# }. K. `) z( x
unhonest-service& v: I  r) v3 {: T: T
oscillation0 W  D5 Y/ I. U5 x: P/ T+ s
rand-dynamic1 K3 o' n/ n/ r: V: q  f; u- Y! o
]  l$ G. V4 B7 {6 o$ f* x; D
  X, O7 U  Z$ b3 i6 L0 X" f
turtles-own[6 g# K0 a. v( X' p: I
trade-record-all6 N5 Q7 J( d' I0 l: g
;;a list of lists,
trade-record-one组成
( Y* j; v4 R+ Q6 e$ W; {; i0 strade-record-one
3 ?0 a/ y! g* x3 B7 B; v, v. d/ M;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 ?7 w2 A7 Y: Q5 W0 B% ]+ m+ `' g0 g- O0 ]% K, d! K  [$ 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]]
. a% W9 r& G. Y+ T9 ptrade-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]
2 r/ f. I9 v/ |7 q2 M7 b2 vcredibility-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 t- a$ r; L9 S: Z/ z
neighbor-total- h" {1 j7 k3 x
;;
记录该turtle的邻居节点的数目5 a: G' _+ T/ Z
trade-time$ f6 h6 x$ J" E5 ?7 i
;;
当前发生交易的turtle的交易时间
5 q: {' ]3 t& G. e/ b2 f# jappraise-give
4 x( `  Z, I" |( |;;
当前发生交易时给出的评价
* V" b; r9 g% T) nappraise-receive7 g; v5 R8 n$ R
;;
当前发生交易时收到的评价" e# s  |( L! D/ V% x% b
appraise-time* `8 Y$ o$ f' K& f3 u
;;
当前发生交易时的评价时间) n% `, I, W1 ]$ g( F; u
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( e! R& U# u( itrade-times-total8 w2 y; s% A* W! ]7 N
;;
与当前turtle的交易总次数0 Y. t# M' e- z& m  P0 G  w; Z
trade-money-total% ^% d2 l$ a& {+ b& ?+ }# |
;;
与当前turtle的交易总金额
' I$ e3 L6 D" h+ Wlocal-reputation
6 ^- {9 f4 Z6 F0 j/ X9 lglobal-reputation* C6 _; q. ?/ |/ g
credibility
9 r3 H1 O! b  }$ E; y$ Y# H3 @;;
评价可信度,每次交易后都需要更新: ^5 h: {7 o3 ^' D. T
credibility-all
: d5 @2 m9 U7 z5 G;;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+ _& S5 V# B  n. E- I

; S  y5 x0 {& w. G( T) u' \;;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* k; c0 f" P  }/ U! d" V7 z3 G, L6 W
credibility-one% l% c( L9 |5 Z0 X5 i7 ~3 r
;;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people0 X3 x  J( a. A6 ~7 i3 Y- q
global-proportion+ {# j2 L" q% }1 O4 {5 h6 z
customer7 j# f  ]0 F+ \. s% J
customer-no
8 p% ]" t9 t5 a. d$ M. _trust-ok, ?9 U  m: F. B* [8 ]6 }7 ]) i
trade-record-one-len;;trade-record-one的长度
6 P! S; o/ n  y$ E  N- O]+ t5 i) ]& f) C# W: v% y

' W, m* {6 y' ~2 z" y' g1 n;;setup procedure7 _* a% c7 x) M& a
7 \* t$ L$ H5 t$ d+ `  ^( ?
to setup
) m2 ~5 g% T: m( w. k% N5 G, E0 H6 O0 Y9 Z1 J0 m
ca

) P6 j7 m- r* j  B
3 e& d3 Z$ Y, s! d  F( sinitialize-settings
2 I" \1 f' [' u

7 Z; Q+ a9 o7 p7 a7 Fcrt people [setup-turtles]
9 U. n9 E" Z( V0 c
! H5 _5 V6 R6 ^  }) N+ U1 G( d* p
reset-timer
% T$ k/ F% o5 j. [! n5 i5 _9 i
& O# f0 P# k. c: A/ w5 A! K; j
poll-class

- D# c; U; Q2 p7 l5 I
& g3 ]( a3 ~. O5 P, k3 gsetup-plots
, Z- E; o6 S# [
- @9 {, k! ^+ K2 v; e2 I2 [8 d2 ~, b
do-plots
% g5 s' z& J. `' g! z
end
6 I* V6 \- K6 H+ e
6 O- [0 F8 ]2 \# |7 b& o9 Ito initialize-settings# Q* H5 O% }* K% R2 r
. o3 Z% ?8 A, R3 A! ~
set global-reputation-list []

. X. l6 z" P- ~$ C8 ^" K) y
9 _+ x: b1 ?0 a* l2 I9 rset credibility-list n-values people [0.5]
/ y" q7 P7 N. Y( v& \2 j% B

5 C: \9 {% A+ V( S8 E) qset honest-service 0
8 y7 Y: b2 v0 Y; o4 K7 m
5 o  B; M. T4 [$ U( x' z) n9 m
set unhonest-service 0

  P. X7 E* |: `+ j5 D+ X1 H  _
( i" z+ n$ L0 C2 }3 M1 ?9 @) B6 kset oscillation 0
! l1 i* e+ b- G7 y2 X# X! G/ Z
0 @0 d. r6 m% `! C$ @
set rand-dynamic 0

- o0 t1 B. ^* e6 ]. a0 Uend
; j2 V7 \) Y! t( A3 g' s, t% Q- d6 J- {7 U8 Q6 ?
to setup-turtles
* D+ {# l, V8 P  P: Yset shape "person"
" W* b: D. ^7 I! }setxy random-xcor random-ycor# X3 Q: R* `) ~, L2 _2 [' Z2 N' B
set trade-record-one []; `0 \. j1 W: i" E
3 s6 s- x" p. G& m5 X+ `& l! q, ?
set trade-record-all n-values people [(list (? + 1) 0 0)]
. L6 }. B9 Z; d

6 k. p' K+ h( _6 y$ Aset trade-record-current []
+ Y! q. p; r- [* a& A9 f2 @# w4 \set credibility-receive []
8 k) a0 M3 T- uset local-reputation 0.5
/ Q2 e0 i" s) Yset neighbor-total 0
6 {( o  v! v6 K) e% N4 `3 g2 H# gset trade-times-total 0( D: h+ a! H3 i* y' s) U
set trade-money-total 0
0 G  }7 P2 b  _+ p( xset customer nobody
) x# L5 y- j! }0 L& b6 }set credibility-all n-values people [creat-credibility]
! P5 _* U6 i9 p: I1 s) iset credibility n-values people [-1]1 h& f5 Q# R1 q$ k5 u
get-color
. ?0 Q, ~) @, i" @
( B4 ]- n+ B+ S" X+ F
end
5 [- u! {8 p; b0 Z6 o, ~7 t* u1 d7 P0 T% ^0 U" q
to-report creat-credibility
! n: m4 c$ h) n3 [/ B1 [, }report n-values people [0.5]5 c/ S+ J5 l% a
end4 z# s* {! a# r$ C  W

5 @: o7 F! e5 i1 o: p: J& N* m& ito setup-plots
/ u' s; ^+ \! D5 K0 B' U0 F# m6 x! A( v8 u6 N$ e
set xmax 30

* R) |! Z, C/ ^# p' ?" A- |" A8 w$ d- [5 E* r2 [
set ymax 1.0
5 |2 U. t2 S) T* _1 ~

- ], Y) g5 R  p# g* Vclear-all-plots
$ [: y7 h1 w+ ~  z* }4 `+ a1 j5 @
. N4 Z: d$ g* V
setup-plot1

8 V' h: E, ^* Z/ {; W. f: i7 K% u% n
setup-plot2

9 u- l* G4 p( L+ [$ n0 A% r8 Y! ~, w6 h+ m' i3 W
setup-plot3
0 c0 M% w& t1 C+ F- m
end7 q, {1 s! m/ V5 O
% |# e4 f7 W  ?  `, ~* J  _* \
;;run time procedures0 ~/ }2 ^6 Y. Z8 t6 o1 T1 H4 Q% N

1 R" n* z. N! Mto go) p7 N8 F6 x3 t9 O

+ r) T/ e: ]) F( @) u7 K5 mask turtles [do-business]
" l* f- _& v2 i* ]
end; H. K  I0 [2 R1 @
7 m& C! L/ w0 Z& Q6 J
to do-business
+ [1 L5 S0 W3 t
. O  G# ~. n; q. [& ^. K+ }
: q8 r6 O- M, T! I( {/ k% T
rt random 360
8 i. L- P% ~9 D. u9 o/ i( i/ o) b/ Z
" ~+ ~( y- {; ]  I; F
fd 1

; v7 L* d0 I8 ~7 i7 `8 |0 l
- Y4 R: u% u" [# Eifelse(other turtles-here != nobody)[

1 X/ \) y* c/ ^8 b2 k
/ G4 ~. _& _! n0 }3 zset customer one-of other turtles-here
* R0 {# S; \/ {  @

4 p# _- z3 a$ @, e9 u- z, {;; set [customer] of customer myself
5 ^; t( s8 q; Q; c. [" }; a
, y0 z9 ~- P7 c. ?; M$ [
set [trade-record-one] of self item (([who] of customer) - 1)! F" I/ p( l8 L! @" l9 A5 i5 x3 y
[trade-record-all]of self# G* X6 Q! ~( R& {! O/ G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ S# R7 ^* H* X0 v9 }
& L: A2 X+ m6 d8 t9 H  r$ n
set [trade-record-one] of customer item (([who] of self) - 1)
' c" H6 R6 U0 D0 G* F+ k" A[trade-record-all]of customer
3 L8 y: g& @# R3 O  Q9 }: x& F& V3 g

; @) R3 R# k1 y) _# D8 ]set [trade-record-one-len] of self length [trade-record-one] of self

# h2 {& i' B; }! ?* R+ G9 @
: ~$ C+ a3 ?, k1 Q: B" ~set trade-record-current( list (timer) (random money-upper-limit))

+ m. E9 ~8 C  m7 S, r5 X. u% V2 k" t
% C5 v( h" N$ e, ]$ K$ Xask self [do-trust]! t! O0 g$ e+ l" W5 `# k& A; I
;;
先求ij的信任度" M3 W1 Q0 ^4 u6 P8 d1 Y
, a0 ]8 ^) }0 y/ H* T/ D+ `# B- Q" u- C
if ([trust-ok] of self)8 |: A- m1 X" V) f& q  w/ U, `( {% k
;;
根据ij的信任度来决定是否与j进行交易[4 Q8 a0 n2 J6 g5 j" K
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself* x8 O& J. q7 S0 E: u

8 h, F, h4 a( E' V4 \! S% W[

1 }/ b. l6 q3 E- ?+ F& W. ]& r
' [4 h/ @. W3 c9 Qdo-trade
' N: m) b; z5 y+ @! G8 i

6 X5 H1 Q  O; [: [update-credibility-ijl

: S1 n! H% h8 L6 w# V7 b2 a! L* J* t$ |
update-credibility-list
# C, A$ s5 `0 G

! d3 M; }  R1 D2 |6 Y
/ c$ f) `) H" E" M' Aupdate-global-reputation-list
' \' {# x3 M7 H) u& }
7 ^) n6 j  e7 s& K, c
poll-class
9 `) W# `3 Q  i9 E

3 K! O6 {( T3 c( Y& d( m4 x, Cget-color

$ Y& H% L% @. i) V3 W4 _' @& D
" D7 j/ K. H! P5 ^* J' V- W]]$ Q1 a, _+ T/ M' K4 H
! j2 i  h) v" Q  g7 }3 X
;;
如果所得的信任度满足条件,则进行交易
- s" e: A* A4 @2 `: p0 h! o) h
% T3 I) Z! A& D/ O2 l[
) X4 L- B; U* _1 |( y- [- _
4 |8 p  q( ?, ]- g2 t# W7 t  O
rt random 360

2 Y* e0 o0 n+ B3 c* v& c$ y- y- z$ Y0 n6 \$ t" ~) D
fd 1
7 n+ J9 L& G% B$ s( h2 X
) i: y0 g! F5 M$ q" P/ I% M
]
. ~9 E( N5 P6 v2 q3 v% d( B  H' f
9 z2 R& [, K! P( n( \+ z4 @. m
end
- _+ T' K5 H3 C# a5 Q7 s! K# G

5 P/ `% p$ H/ V; Y& \& Cto do-trust : E& f: k  y! l6 ^7 |. Y; p
set trust-ok False6 `2 X: ]' _: ?& }+ B

6 y5 T6 p, g; D% ^; B8 {6 r
2 O8 Y) j% {8 z- Q
let max-trade-times 0
) V3 y- i1 `; |% i# Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. P) [& r3 A7 ~* S
let max-trade-money 0
' P: o+ k0 O8 C5 xforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  q& M" g* @& R: Q
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 L1 m1 i7 P& s# n' Q

  S" M: y+ t) v: L8 C
. ^) ]; P$ J+ l& ]% P' D/ t
get-global-proportion
) K; W- U! O- D  M0 N! a$ N& E' plet trust-value
" [5 A7 j! x3 g7 a- ~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)

$ Q1 x% q1 r" J& Y* S* u$ N1 rif(trust-value > trade-trust-value)
0 z' A& ^1 u4 C6 w5 V[set trust-ok true]
5 [; ]( B1 l3 h! |5 F$ j4 Jend
, ]3 g) _  @' r8 k0 k" P% T4 F- z: u, |# y% t1 ^$ U( {
to get-global-proportion2 h2 ~' _; t1 m
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
: w3 y2 r6 E* E  ~7 |; v: ]2 M0 T[set global-proportion 0]
; L* I  n4 F! N, h8 T7 ^[let i 0( w( J, f& i0 |% P9 j
let sum-money 0
- F  K# {: t7 Q, t$ vwhile[ i < people]
8 T$ P, z* z8 m) h. Z3 D: ^2 A[6 d$ O8 ?  L9 u9 H5 V( W1 i8 X
if( length (item i- b+ z9 U  v' F* I! }
[trade-record-all] of customer) > 3 )
9 m0 I  d5 k# W) r
[7 R% _& G# ?/ }: v
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  h% X( W0 r8 R  \]0 R3 L$ e! `! g  y$ `! A
]
  Z/ q, Y' K# D7 }# s9 Vlet j 0' o+ {  L" u& _9 ^+ o. }2 n: y4 B# w
let note 0
" E, ?5 T  V2 C% kwhile[ j < people]
/ s2 e3 e. }& o8 ~3 c, _/ D[. h5 w' [0 l. A% }% Y' |0 i2 [* a
if( length (item i  b6 U/ V) ]) T+ M% P' A/ w
[trade-record-all] of customer) > 3 )
3 t( O( m) s: d" t- L3 C! T
[+ H( X# G! b9 S& Q: m; D. v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ K4 ~) m$ D7 }% y) r4 E! e3 M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 \3 u+ a! K' W+ V, T" O: W. v7 ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]. [6 M# H  R4 |* V7 D4 w& F
]1 y( D# X) c7 p: J
]
, r9 \" l( y8 a( V& a* Gset global-proportion note2 ?1 n% X3 b7 ~* V) g) Z
]
* M9 r1 N$ o: B" L( |end
2 D; N) i4 M0 C! f0 E2 K
7 |2 M* \+ C  Yto do-trade
- t% b" H) j2 [" i! I8 f;;
这个过程实际上是给双方作出评价的过程
& X3 V3 e0 i( E7 B9 o/ bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 S- h: G! Y9 }. A9 M2 t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* d: r. z0 F7 p% g: `, _% L3 s
set trade-record-current lput(timer) trade-record-current
9 R/ c# F/ d1 R& H: S6 ?  n8 A( M;;
评价时间
& z! y1 l. ?7 z7 B* kask myself [* z. E) s( Q% S: ?- O4 z: @
update-local-reputation
8 ~4 }- U' F$ Eset trade-record-current lput([local-reputation] of myself) trade-record-current
. s% y& G. J6 X  T7 K5 [6 E]
. ^$ t9 n1 F3 x7 W8 Q$ t1 tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 B; e/ ]9 Y3 V4 r) G
;;
将此次交易的记录加入到trade-record-one* k! F/ a9 m5 G& R2 U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 I  D/ \2 w  e! g% p) X
let note (item 2 trade-record-current )
; h! E, b2 u+ Q) Q2 y+ \set trade-record-current3 A9 O5 l% k+ G
(replace-item 2 trade-record-current (item 3 trade-record-current))

) b0 x. A* F" g9 `' nset trade-record-current
7 V% w6 g9 j! v: l! v1 h8 X$ G* w(replace-item 3 trade-record-current note)* O1 R% u# S! v' Q
2 C& \# [9 T2 }) B5 g, X

% G" ~7 v& m# y0 m1 p1 zask customer [! W+ G6 W( V- V2 d
update-local-reputation
# o8 }) x  Q0 K5 k' Eset trade-record-current
1 M( F$ O" t% x3 q8 K6 f4 S/ b(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. B5 s1 x+ f  @1 h1 t
]; o4 i, c1 M8 Y7 h& ~5 \

! ]5 Z8 v. d2 }6 u! @- Q, _

& a: ]+ |" A" l% n& \2 Y- Aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 I" J5 @/ h, F3 o
  \: T9 X$ C" E$ c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  |8 ]/ i  N" q
;;
将此次交易的记录加入到customertrade-record-all
- y2 C  F4 n$ u. T3 N% tend9 a/ U" D- \! u5 H. q+ L

4 ~* y8 z6 w& C+ v6 `) @. wto update-local-reputation: g+ X; |, C' R( g9 O
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 a4 T9 A/ Z  z- Y- v6 Z: J# {: O( C4 o2 ~8 A' F: g1 K
6 n5 d- ^; e  t. q' l5 U
;;if [trade-record-one-len] of myself > 3
% p# r3 C  m5 V' b
update-neighbor-total" o2 d$ ~2 v! P0 S: d  x
;;
更新邻居节点的数目,在此进行
+ b( z% {+ y# J$ Ulet i 3* g7 i, }4 R  v8 T! o
let sum-time 0
- ^" }! F$ l7 Y- A$ S6 Jwhile[i < [trade-record-one-len] of myself]
- t# v2 W! O5 J[
' ?, @& F& w9 e4 zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ W! {. `" P0 F% M. q1 m2 s- p
set i
; C% A- ]8 ?! W- s( i + 1)

9 K9 o2 j; L* Y( L; t]- o: {! P' [7 s7 ?, ?
let j 3- G5 T( ?2 h$ i$ z) H/ `
let sum-money 0
+ q2 A+ d% B) E5 j% [while[j < [trade-record-one-len] of myself]
1 C7 E% H! h8 b" b/ D3 D8 s[. h: U/ f0 o" ~
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)7 E/ a1 ?5 a9 O# b  u# {/ s7 Q
set j5 ^( e- R7 H/ G# u, M
( j + 1)
0 q+ n, q8 e" `
]4 w3 Q9 e; c5 u
let k 3# K) c  @3 F! d( C) H) W/ q
let power 0
2 z& u$ G$ B" ^! F6 U6 @/ o0 Plet local 0; q9 X* g9 L8 q. D9 g3 Y7 K
while [k <[trade-record-one-len] of myself]" E- R9 ?1 n. o. C1 O$ q7 f4 v
[
" d" ^$ c( s5 Q; Aset 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) ' n- [" l7 K* e+ j) f- U4 e* m
set k (k + 1)
# k3 F/ f. i* ^, u% q]
+ [% q5 G" B& z# v; Pset [local-reputation] of myself (local)
0 p4 E( V. a" v6 R% @5 mend7 R5 Z% p9 I# ~0 n
5 c: I" G1 V* o. o
to update-neighbor-total
/ J2 G( P2 o* {6 ?3 I' A; e7 M3 G% v. ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
/ J) l3 M0 h& C# N7 b! @9 S" i# |6 {- B4 U- H, F
; A/ R- x% `2 B0 v9 s! J! |+ X
end
. u/ \( {% ?9 d- e5 ]" N" D+ i
2 ]- M' e' e# Q, fto update-credibility-ijl / j2 l$ Q$ [' [( g

9 x& M( X$ Y8 ?) 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。  X7 s/ l4 d( Z5 L  `
let l 0) e0 G( u1 g+ w+ ]9 m
while[ l < people ]
" |! N/ E8 e* Z% D2 N9 @  |# x;;
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
6 R  P" Q  j  I, ^& G[$ J, L3 B: h6 N3 q4 A% ]6 g( _. C
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ M$ g3 [/ c, m
if (trade-record-one-j-l-len > 3)
) N& W/ l$ o, o- I1 \/ z$ l+ d[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% N7 G$ ]" l; ~9 |  c
let i 3
2 N7 U4 ^# y% c3 ^$ Rlet sum-time 0
9 k7 j4 M- D3 {: |6 Mwhile[i < trade-record-one-len]
0 v( }0 x3 F& z0 k) M( \/ i[  C- `% \( ~. Y8 @
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! g! c' L& X  x) H2 m% b
set i
2 ?4 a1 B" B% x9 K* d9 g1 o6 D$ v( i + 1)
2 J+ @1 t2 i9 X( h3 v  W
]7 |) X4 z0 B. I+ z# V1 s
let credibility-i-j-l 0' V/ P) V0 i) I& }
;;i
评价(jjl的评价)4 @  u- W9 T# |9 X/ X: h+ s
let j 3
) G7 }, ]" v9 B# h9 I; f; |let k 4
1 ^8 O2 T( @3 R) |4 Q2 bwhile[j < trade-record-one-len]+ I' s" h; d3 ^* x" Q
[1 d- _: T+ P7 g0 f# j
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+ q: g# j6 r  e
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)# c2 \  X% W( l9 C" Y0 p
set j: [# m0 H4 b" O7 \$ q; _
( j + 1)

1 i0 \) Q' x: C1 s]
( ~; g! ~( c5 {/ @; q9 u% yset [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 ))
, L9 M# i1 ^7 u$ a3 E9 n! M4 S7 t$ h; I8 ?: Y7 G  E9 B

$ |' C: i2 g+ }" dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ k9 L1 Y- J0 ^: T- Y1 i
;;
及时更新il的评价质量的评价
9 E6 ?, z# z% gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: L0 L& O+ L+ Z* Oset l (l + 1), q' Q2 K; \: g1 d0 S6 b
]
( r: Q+ A% e0 t7 Zend( w0 W  @' b0 B. `& r

' Z" s, U3 o7 R' W: P4 mto update-credibility-list( @6 W3 H8 m  \8 E3 o* E, @
let i 0$ u2 M5 r7 ]# p6 D, K
while[i < people]
0 y; p2 o6 J4 B# _+ g( @% u* `[
7 _. Q! _' B: H0 b  i1 flet j 0$ ^3 v1 W( b. U6 F$ B4 C- H- z
let note 0$ @- a  P$ R5 {, y8 S1 x
let k 0
6 e' ~7 N* L! a6 Y2 R, r. [! Y;;
计作出过评价的邻居节点的数目4 q2 x4 M# y* Q( ]9 V( ]$ R* Q; w
while[j < people]
0 T6 _) ~7 x* K6 U[# I, }  \$ h, M" h" \
if (item j( [credibility] of turtle (i + 1)) != -1)
+ [) n# Z6 ^4 ^;;
判断是否给本turtle的评价质量做出过评价的节点
: d8 J5 K1 a; R6 J* |5 r8 \; ][set note (note + item j ([credibility]of turtle (i + 1)))
2 }0 O  e# h0 r8 |$ N: b$ h;;*(exp (-(people - 2)))/(people - 2))]
9 u  [/ l  _, J  R6 W' r
set k (k + 1)
/ a) j2 ~( ?" `3 B# ?! ^9 J' p) X]" q3 R+ h- n" |3 n2 A4 q: D
set j (j + 1)
" V+ X8 U9 @  X& W0 v5 X- v]% w- f# M% S* P2 M
set note (note *(exp (- (1 / k)))/ k)
" R  ?8 J" {, |# |4 N! Xset credibility-list (replace-item i credibility-list note)5 ~/ q& a5 r- ^, `7 K
set i (i + 1)# g6 a. T* [! }# H- ?/ r' C# E
]
' i4 `' q" `) b" qend
& w6 s, t: D. t4 P) X6 ?
* [: j3 N  L2 U- ?5 i; B' yto update-global-reputation-list
& e) E; R% o# vlet j 0" F9 e2 |" o- x3 b8 f' U% ]/ k
while[j < people]
# G" P8 _6 {) V% E& R[7 X" G! {; c$ U  [- S9 A
let new 0
) u/ ~( e7 f1 _3 ^4 q2 K4 d;;
暂存新的一个全局声誉
8 q  {+ L  d* q! G$ w3 i( A3 I; ilet i 0
5 [/ g- \3 g2 Olet sum-money 0* B* b5 _% b4 ?' F( M
let credibility-money 02 N% {$ _7 n4 M
while [i < people]
5 T5 x& `7 t9 E  |[
) K8 J4 M, m* ?9 vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 M5 R, {8 `0 ?6 d. _  Y6 G) }5 v7 h
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)); K' P* g- v8 A# f/ ]+ h& o) _- j" _
set i (i + 1)1 k4 c  n  r2 R  }$ r0 t0 Q! M( ?7 ~) @
]
) ~$ X+ i  J! E2 p4 k8 a- [let k 0
8 B6 ]4 U% Z& y5 _, _) t' clet new1 0! t7 k3 i' ]) D0 i9 @
while [k < people]
+ i* u5 }+ U5 {: b/ k8 v* C[$ N7 l# f# ]: d8 F: G7 Y/ i$ S% M4 z% U
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)
2 Q2 R6 P; e, Q$ H7 G4 \4 b+ Lset k (k + 1). {3 A: z: n2 |# g
]
0 O5 f& x" `8 a7 W1 Uset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 \& m3 U. c! X4 V
set global-reputation-list (replace-item j global-reputation-list new)
% x4 y- Q4 Z( f% q, y3 }set j (j + 1)& S# c" Z  N# E% f  I8 p
]9 P7 |' p. R# r4 q
end, J* w7 ^1 ^7 j3 z% C
- u* b1 [. Q! L  V$ ~( S

5 a. E/ W! F" D0 M7 T9 S' k6 l! \4 }" [7 k  q* R# R1 r" U
to get-color, u$ i" t! n' }; S& ]. t4 K

8 r) m+ Y0 s2 R  y, Rset color blue
& Y6 f9 L8 ^3 N$ m8 [
end
  E0 o( I& l$ m3 v5 U. [% @% Z2 U0 I
to poll-class1 c: f& Z- |7 ?7 k- ?, o+ C* g& V
end
5 f' L" x, X5 [5 O1 r. w( h% U2 H, O+ V3 V! `$ A
to setup-plot1
0 |% o# {+ x2 o; `) D) K' M! R: N5 t9 V, C
set-current-plot "Trends-of-Local-reputation"
8 I9 H! O& ?1 z3 C+ z) t6 p' e% A- p

, B" \# J" S. u1 t: Mset-plot-x-range 0 xmax

! ~0 c5 A) m6 X( I) q" z. d
5 z9 C8 {( p6 }4 t' Yset-plot-y-range 0.0 ymax
7 q( p, C% Q  N2 c1 n* T: Y
end
( u$ E5 R; g( Y1 o2 s5 f& X9 K9 e# i- s3 L; _9 D8 N, X
to setup-plot2
9 X* v: k( T: l& C# {# d4 Y& R* b/ R0 i' O0 i5 _+ t
set-current-plot "Trends-of-global-reputation"
3 C! d' ?8 Q1 |4 \2 o4 [

/ [; h" c! M0 Pset-plot-x-range 0 xmax

% x# j+ x* U, @( f! w' n3 A2 n+ o
( }8 {" |0 `8 |& Y+ n8 _set-plot-y-range 0.0 ymax

& F1 b* ^; X5 A# f5 d/ d  J5 Qend+ Z2 a  U4 ^3 l- a$ E" A5 k

  a+ l7 S4 I( ato setup-plot3
- s1 B: B% E- V" w8 Z: Z9 s: [
% P1 O4 _# _& p" \set-current-plot "Trends-of-credibility"
2 _/ T% M1 h8 [: Q& S1 x0 D3 @% d
9 X, ~9 Z. U8 }; a. c8 ~8 o  A: b
set-plot-x-range 0 xmax

( F8 X( f' @+ s. U9 z. h, @6 n4 a4 p; e$ c; h9 d0 H
set-plot-y-range 0.0 ymax
% K$ D$ i. x2 T' f  @
end# C; F9 M6 W8 W  h; b7 j0 x
- _; S3 O& c+ ^. O- o: h& W1 g
to do-plots1 ]1 U4 I; q9 u( X% v
set-current-plot "Trends-of-Local-reputation"
+ J* U5 @! A$ O' Q, g, @5 c, Aset-current-plot-pen "Honest service"
/ C+ M6 Z' {( T; Hend
1 R0 y7 ?' @! Y2 }$ [7 s  \5 B3 q- r! M; b# @
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.3 }$ A5 C$ _5 F( i$ i: y& V

$ T/ u6 r' Q7 \* y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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