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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:
" A( C2 M+ l! L& }to do-business " `) [% ~! i1 F+ p
rt random 360
8 f. ?' z- e; B! g0 e' o fd 1
; f. F4 L2 x' P3 Q' L1 Y ifelse(other turtles-here != nobody)[
) W1 R$ G* }/ ^7 y   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.  Q9 B) p! i# D
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * k* E; ^) N, `5 t4 g8 p' m$ f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# V9 }7 A/ u$ U/ b/ Y
   set [trade-record-one-len] of self length [trade-record-one] of self5 W- k+ y* x, z
   set trade-record-current( list (timer) (random money-upper-limit))
5 b9 H0 n) S2 S% n# b! D  z# `6 a
6 `& a+ V  @) s1 S1 z/ `6 R+ B. Z9 b问题的提示如下:
. Z; T3 O6 f. o/ c, ?
- O1 H7 G5 L; k; m+ r- W) G  C, Uerror while turtle 50 running OF in procedure DO-BUSINESS; G- Y3 ?) w1 {0 s( {
  called by procedure GO
* H- ], e+ k# i* n' `& aOF expected input to be a turtle agentset or turtle but got NOBODY instead.- ?! G% F3 u" d8 T
(halted running of go)
. y9 K( w5 s- n) k% q; r
' }- b- Z3 O$ Y5 S+ \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~~" v2 w: ?2 n1 p- |% 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# K: i; W- o/ v& w( P. t; c
globals[, U7 w$ l! f, t0 G: [% O
xmax& C+ H0 C# B8 X6 z2 |
ymax
* p) ?; [" N/ x/ A- W9 Qglobal-reputation-list
2 p5 b& [' ^* U9 }
$ a/ [; Q% R7 m5 y4 I- c;;
每一个turtle的全局声誉都存在此LIST
# h2 I/ i. C4 k8 p6 ucredibility-list5 C+ }: H. T9 `* c$ H$ t
;;
每一个turtle的评价可信度# t$ W+ l# ]# ?4 `, e7 w
honest-service* n$ B1 p8 ]# c& K2 P7 L+ [
unhonest-service! _& i: p% Q3 D
oscillation
) I  R3 n: [3 o% Grand-dynamic# b& [9 \2 ?4 r& Q& L) _
]
( k3 Z5 m0 t% z4 l: R( Z% e( W* U3 v  @  v: B& q, H6 L
turtles-own[
% f9 J! l. t8 \4 ^5 _3 \trade-record-all
, e  J" L- z" J" R;;a list of lists,
trade-record-one组成
/ u, x- R( Y" S( X, H5 A! k4 ktrade-record-one& a  t  W( k! h% g1 y5 V" J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, }( P  [( P& z9 y" J8 `) s
4 ]# f( U  l/ _
;;[
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]]
' N. T4 o* D% p* g: Etrade-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]' K7 k8 t* I. z+ f
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list9 w3 l8 K) h/ |4 i* O; v" f+ d
neighbor-total
  D+ d: r) r+ x- C4 _& \% d  A;;
记录该turtle的邻居节点的数目4 X1 z" C7 K4 @) E( q
trade-time1 k4 G4 P) f! L* j7 Q; g( [2 z
;;
当前发生交易的turtle的交易时间
; V0 b0 J( k" Q+ r6 ~; @appraise-give/ s0 W2 b" B6 C
;;
当前发生交易时给出的评价3 E: P2 c" a( ]
appraise-receive
2 K$ G4 n7 m# S6 L8 W2 b! B;;
当前发生交易时收到的评价8 M. x5 C' J' d5 S- i
appraise-time& j5 u8 n0 J' I: G' f4 d
;;
当前发生交易时的评价时间, N" u" Y1 J/ W" i* x
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" ?( n  b5 b' Utrade-times-total7 n' I6 L: T& p9 Q6 m
;;
与当前turtle的交易总次数+ e! j2 B% X1 h# g
trade-money-total( O& X+ x8 {( a2 {8 B
;;
与当前turtle的交易总金额
7 f+ Z5 a8 B5 {, qlocal-reputation
% ~+ ^  B$ N4 b0 O! iglobal-reputation, P7 s% v- B* p5 i# J, X
credibility% C" I9 D2 w2 A, o+ n4 f
;;
评价可信度,每次交易后都需要更新
* j& I5 R( M8 t+ s; \& Ecredibility-all$ c/ [% r6 i  R( e
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据% O1 ~% ^% ~* W5 [! k

- g$ D" G7 L4 T& d;;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- T3 k  A3 e6 ^$ c) z9 }* i
credibility-one
) H. S9 ^6 n7 M  V" M;;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people4 F/ Y+ J1 {3 x8 B6 b3 L
global-proportion& T) b2 F3 f* i' ~# R
customer$ ~! B. Q( o% ^5 v5 d
customer-no
& k7 W3 \0 H- D3 p6 E" ctrust-ok$ u+ i$ ~% M  q9 u
trade-record-one-len;;trade-record-one的长度7 _( q2 v; p; j" W' |
]& `6 H/ M& v: E$ @* k5 v( ~
# x+ E. I3 i* e& N# e, W
;;setup procedure
( z3 d3 `8 }+ B* x( v7 a5 ?7 w" h  Y% k+ {0 a# s4 }7 Y. `; f
to setup
0 [! K' V% t/ F: [  l  I# n8 j0 r6 l! d- E. E' F
ca

* [& @; u6 Q- k7 V! S, G9 }7 m& g( u6 O# P
initialize-settings
% x( g* ~& T+ I+ C+ k
* X7 r1 Q" ]8 A
crt people [setup-turtles]

* x+ T3 Q7 B  y  O! q" V" q% c& V3 t$ E+ v9 e% H
reset-timer
4 w- b2 U0 Z$ f7 O- v) u: A

9 H/ \' Q9 z* M1 U& rpoll-class

( ^- n- g2 b& c* b8 F  r& M4 f$ {- F1 t0 \
setup-plots

4 R  X8 T4 Z* p" `4 O8 P, ?# m% w: {  k* v  G! ]: ?
do-plots

9 r0 j$ x, g0 v; S+ wend
: c( v0 V, Q4 M- T2 y
4 g0 ~5 v  x% w$ J: nto initialize-settings
- e5 ^. q( U! r6 Q" v2 }( H! k2 r$ a+ Z" |8 _
set global-reputation-list []
, e5 \) L/ r) Z
, u4 p6 v7 q: @" w$ q
set credibility-list n-values people [0.5]
& O6 v$ p! J" c# S, ]& P

  \4 _' C$ P0 r! y' H: bset honest-service 0

) r1 |  \6 h) [7 W9 H% ~5 |( g+ d3 v" i& X
set unhonest-service 0

2 w, e9 O7 m; B1 u( ~4 ]. A* |% t  C6 g2 P
set oscillation 0

/ X, v2 \) u5 q; x$ k
1 R) O6 v* Q5 U7 v2 y! j% nset rand-dynamic 0
( ~9 ^6 r( a; X) M
end, ]% A* G! M" ]
1 J: j0 T5 F$ t) B% E& }
to setup-turtles
: [0 J5 c* I0 yset shape "person"3 z) u) a/ c, J, b8 c5 h
setxy random-xcor random-ycor+ J3 C( G  p7 D1 x7 \
set trade-record-one []
) J7 X: P- d, S0 M) B

3 c2 K6 l4 x7 ?8 t3 P/ nset trade-record-all n-values people [(list (? + 1) 0 0)] , {4 A0 d; O- O' `7 V
* k7 O6 p$ Q& d* v9 n9 C# Y  O
set trade-record-current []& ]# T. O2 H  U, K
set credibility-receive []
; a* y! z) K: s3 L  ~" Jset local-reputation 0.5
+ x* t. ^4 n& q5 B$ b( qset neighbor-total 0/ h# h% i' w$ k7 a! d6 ?
set trade-times-total 0
# i) U  F1 Y: T. M# y( {set trade-money-total 0
9 l$ _& o9 ?) b( T: ?2 S/ m/ @set customer nobody6 T- c9 _8 K! D: O3 M
set credibility-all n-values people [creat-credibility]2 |6 }0 f# Q$ j" Z
set credibility n-values people [-1]8 k$ a7 I/ V; ^9 E% \4 `
get-color3 C3 ?. L: N' G4 ]' ~
0 T7 K' L* \3 n) T$ u+ f5 k) h
end
; f5 u# @. z" p4 d) x. _6 F. B- J& l) Y0 S1 P
to-report creat-credibility
: x! B& ?8 k7 ~4 @9 ^# d/ Y* c) e' ?report n-values people [0.5]
) ?, P% U' a! _+ g+ send3 E: y" H* E4 L9 ?

& l. Z& x3 d* [3 q: d9 ]- m: Fto setup-plots
/ C* e: T" z: ?; v. L. @( `/ c% f, Y# Q- d  I' P; y3 q
set xmax 30
8 J$ g0 f2 X( i( `( h1 P
  p4 R* D, o) G6 d' w: u
set ymax 1.0
# |6 }8 |. R0 s* J0 V0 U/ t

2 p0 i5 J8 o8 P# y! \8 U, Rclear-all-plots
5 T" @7 J5 U7 K5 U8 x/ r4 ?

0 r" v+ q  ~! v" ]! H. @setup-plot1
6 G! H& b# s* u, `. K

% v$ j) n5 N5 ?- v+ A0 d5 D4 Ksetup-plot2

0 a) [2 D# n3 u8 w6 Z! W8 n3 ~# z. B2 l& d/ E6 ~( g1 k* L. J# ~
setup-plot3

! i9 E$ I5 l8 a9 f. |! W' S  q2 v3 cend
+ y  B9 ?9 \2 B9 s# h, d  _; s! O1 e* P/ ~" _* P& |/ ]% {
;;run time procedures
/ W7 h5 a* R3 ]' j" Q! u$ B, z( x
to go
, c0 d5 Q3 X" B+ L, t# b8 M: [8 Q0 M4 y# E, @, k3 m6 X
ask turtles [do-business]
4 c3 X/ l& E3 _& t
end
9 q& B- B* U! I1 t0 V' k- E
; p2 V7 N) v) i3 E# z7 qto do-business
# T! i* g- q6 A( p0 i# [
" h0 Y1 ^( B/ q1 K, E7 b
/ D, [# s( X4 e/ g* V4 z
rt random 360

) ~& |! r: J) A/ }# x6 j9 F% v
9 W1 j* @  ^' lfd 1

& ~- q% D2 ]6 g! t4 H, A" i" D* u- [
; ^$ R, b$ N2 M) V- ?ifelse(other turtles-here != nobody)[
$ b/ r# g+ E! h) _+ b& l# q

) b9 b' x, C  T  Gset customer one-of other turtles-here
; Z* f6 M2 ~+ L4 ?

8 z+ u" j$ F% @7 l;; set [customer] of customer myself
# _' X$ k  s6 C1 }" S) l- h: B
( Q) v0 f2 r7 y( {# r
set [trade-record-one] of self item (([who] of customer) - 1)- y' c  A" m- C( J* P) d
[trade-record-all]of self
0 |( _* j' l+ c# h; n, d) C0 L;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' ]0 R& N. A, N/ i2 x- n
9 C# H. B( \+ I; \
set [trade-record-one] of customer item (([who] of self) - 1)9 i, ^/ J% q9 J( B; o2 _" x% h( U
[trade-record-all]of customer

/ i7 Y( K+ E9 z" C5 }+ k# @* Y% [, |5 u2 d2 J, q% ^
set [trade-record-one-len] of self length [trade-record-one] of self
. j' H  a# P/ z' }3 k

. ]9 q5 g: G9 m  V& Rset trade-record-current( list (timer) (random money-upper-limit))

) J7 t, D: _. k6 s7 ?: r* D7 b" Z0 |+ u+ w
ask self [do-trust]
5 U) R( n7 N$ R3 m8 a' p& y;;
先求ij的信任度
) y! {$ p0 a- {/ v. M
" d) F' Z. e$ H  Dif ([trust-ok] of self)3 K, t- c, n9 v  j. Y) t0 w' v
;;
根据ij的信任度来决定是否与j进行交易[8 U5 n) j) y9 W( \
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ ^# T$ U8 g! [. ^3 n. h% _3 z9 [: J' J% X4 Z+ q* w3 Q
[

* G+ ^. }4 A9 Z4 b7 q$ u+ y& O' @9 h8 e4 d7 e. |
do-trade

8 |3 b" \! K5 ]+ Z6 @. f
% j/ D# V' J$ Y! w6 _* H6 kupdate-credibility-ijl

; u/ b+ `6 {& i9 n& w% X& W6 t
. S8 N3 X, @+ Fupdate-credibility-list
( ]' n1 t# w. r; I( \* r1 r

1 S2 m; V$ J' e! c/ B$ z5 }7 Q- j1 G: z: L. \
update-global-reputation-list
! t  F. b2 ]5 ]. l
# Y4 g* R# d. b) B" S
poll-class

8 n0 @5 i# s, c- |9 r: M9 |( x" V) |" X% |' V$ Z" d  M" {
get-color

3 k9 i' J1 N$ r$ n- E3 Y& R; y- H: Y5 H, l
]]
6 S( Y  j: U! m5 r0 x9 y4 d! U  u# I% g
;;
如果所得的信任度满足条件,则进行交易
- G- q5 t; M' d* m/ J
% O  }+ U& A. S( S[

6 u$ J" p0 b4 g, ~% Z& b* e
7 a& x9 R* p. ~0 g% Vrt random 360
' X4 D- K* I2 f& t
$ @* I! b% w) Y
fd 1

9 x1 U$ }) N" D  i3 b6 s0 l. d9 v% \; s1 u9 g; {
]

+ V4 `' ~6 o  c7 X' E2 z3 P0 ?' S7 Z+ T0 l2 Y5 Q
end
, `" @9 F! v) M" I
% Y% g+ F. ?! z8 m8 y/ `
to do-trust ( k3 z/ B% S0 w/ {' A4 ^6 a8 H
set trust-ok False$ O2 q* ~: b+ @9 ^  j% c
5 w6 ]6 b4 I; Y% F6 ]% G

4 V( T+ P; M/ t5 |, v$ M4 i' b5 b. zlet max-trade-times 0
9 c% H: d% `- \' O# O, x8 ]+ \8 R; @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], I3 ?) ~: [7 n$ V4 A) V( {& ~
let max-trade-money 0
' D  Y1 r" k5 G8 v4 N/ C* l( uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. e. v1 ~5 y5 @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) q: `) G, q: y, i" I8 n+ |# A+ q8 |; ]% _9 N1 V
1 T9 H& M: P$ e5 G: b
get-global-proportion
$ y8 V# m3 Q9 Z" Q* q5 r% O/ y  Vlet trust-value0 W, G8 _7 H5 [; s# l" Z0 T
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)

# a/ U! O; v) r9 Qif(trust-value > trade-trust-value)
, n; z3 W- g0 b2 ~& `. Q% V8 k  x[set trust-ok true]% q3 O6 ~# j0 C* u: J1 y- Q
end; G8 s! c+ f% c: ?2 K7 {
2 E4 k. L0 c, ]4 o
to get-global-proportion
9 [; f- a+ h1 Y% ]ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. h9 Z7 ~4 i2 A+ h  E  l; M4 u[set global-proportion 0]
% R; D) `7 B* \, H9 L$ K[let i 0. o& W+ w% Q% [3 I. \
let sum-money 0* X  I; {  F% B; M% o6 k
while[ i < people]4 |9 s' n8 T: F5 s, k8 W+ J
[
, o( w& ~7 {# U* m6 bif( length (item i9 \" v7 _( g/ \; E/ ~1 q& g! f
[trade-record-all] of customer) > 3 )
/ k7 g# U. l" Y$ L: V
[
3 U; T* J1 h1 Z- e) P' [set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  C" D6 f% J( i6 v+ t: E]; G0 r- ?! L/ r) f
]
! X$ ~: g+ q% n. j- l2 olet j 0: i2 q1 D3 {! F
let note 01 j( j% I8 H) m1 N( n! S5 N' r
while[ j < people]
# J& G4 W' X% `) h# W$ Q4 E9 X[' x% m! {/ a( T' F+ F
if( length (item i
. y6 ~! r- w. r. s0 n$ S4 M[trade-record-all] of customer) > 3 )
0 W3 e" b8 L. A7 G7 \/ F
[
1 t2 |+ t) c2 A  Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, ~* s. p- _, m% F* J) b1 d. }[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% S- \( E3 z  n: u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 H6 p" _) S6 \# {, |- s
]
1 O  }$ k, Y3 I]% B3 t/ Q: q4 G) Q
set global-proportion note: y. q2 f1 I  q/ E
]
9 o& p. S' w& Jend
$ ], p& {  H' I0 Y
  P0 q- S1 R9 ~to do-trade8 f; \. n! Z% z: T
;;
这个过程实际上是给双方作出评价的过程- S: n% y1 e* M9 r* |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ j( F* ~: P! n: S; xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- O6 [  t# _! e, Q) d. X
set trade-record-current lput(timer) trade-record-current
; ?9 `* _& ^: g( l;;
评价时间) A; n7 ]7 k) y, i; Y5 \+ j
ask myself [
3 z. M1 e" _$ L, vupdate-local-reputation
7 U: l; V! y: T+ {& {set trade-record-current lput([local-reputation] of myself) trade-record-current% d9 t# N+ q; {1 w
]; F% z" @/ U  o, P+ z9 i7 L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" D4 L7 o) ]9 X- x: L! _* b;;
将此次交易的记录加入到trade-record-one/ x% d1 T' ^5 \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) b: l4 M+ Z: [5 V
let note (item 2 trade-record-current )
7 A4 R( }) Z" Fset trade-record-current
) v3 p, W; u9 G1 R(replace-item 2 trade-record-current (item 3 trade-record-current))
& h5 G- ^& p3 }9 Y
set trade-record-current
) i+ n, S3 B4 J% u5 A- i- p(replace-item 3 trade-record-current note)
( X# I- B1 A1 [) W2 |# X8 W
% ~+ _) o$ N& d) ~! ]# W
+ x' M# H, E' r. S
ask customer [- B" O2 w9 q  C8 y( Y
update-local-reputation; r  F8 y' W  p2 y
set trade-record-current
' B( u- e; b) |, O/ S9 U(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. g# R1 j# R9 G  s6 P0 Q]
: m% [; @6 N4 `+ U! \" y7 d; V3 f2 A$ q0 w, ~
( C' Y) H) s3 X0 t
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 `* Q6 F% x0 a) O) r8 W

. ^, T9 L8 ^% Tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
( y, @. [9 y) W;;
将此次交易的记录加入到customertrade-record-all4 w2 J& U* @4 D" P* O
end8 j% o" ^6 S( ~( ~

$ F3 ^# q0 i+ E6 F& Vto update-local-reputation
" z1 \' f& E1 c9 L4 Yset [trade-record-one-len] of myself length [trade-record-one] of myself
" w/ r2 \% r' n( x* |- c9 e# N+ U# L8 j8 ^, m4 Q. u, X) I8 A
3 y0 a. F* N: x$ E
;;if [trade-record-one-len] of myself > 3
- k7 b+ J" z( m, D
update-neighbor-total
$ K3 {, o* F1 `: Y) g  i;;
更新邻居节点的数目,在此进行
7 E: d# S1 L: |1 j# i% s7 _let i 3
1 e0 p$ p3 M9 T! h- M3 mlet sum-time 0: h% H9 V6 R0 y- r, F/ W
while[i < [trade-record-one-len] of myself]3 @( f+ K& O/ W7 q. _- L
[
* a: Z& t( G: F- Z' u( fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
' s4 D+ s5 M. f8 Kset i; Z1 Y6 `1 {3 {) O4 |. L7 |: [+ K: Z
( i + 1)

: Q# W- W. |8 T& x/ w& K0 m]
$ E  r# F* f. P7 t$ n/ f; Glet j 3
+ i% u+ x+ A( u4 a2 f' Plet sum-money 0
6 X. l: L8 i, k( `+ M5 a6 Qwhile[j < [trade-record-one-len] of myself]# ^1 n% ]6 q+ @( H+ I
[3 W" V& \/ D. r! [% j
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)) E: J5 l% i& b( q
set j$ T, Q5 D* A1 |' W. e- X
( j + 1)

8 ]" `9 b7 F, ]/ c% x; P* z]
; z8 V% w: Q6 ~* _5 f7 alet k 31 Q. Z+ I! X6 S) M/ S
let power 08 W- E( w& T$ C$ ]* k1 H
let local 0% m1 ^$ n6 i8 X) v
while [k <[trade-record-one-len] of myself]
- l$ D6 x1 J8 F! u1 ^, W[2 y! g3 w; j7 N' P! J5 v
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)
$ ~+ k+ t/ _9 [0 k- A! E9 sset k (k + 1)
% _- @3 M8 p7 j, p5 ?]4 k! z9 U5 u& x* Z' Q( P, R9 V
set [local-reputation] of myself (local)! V! i% U2 D, C& K
end# O) A7 Z: ~1 k4 u" A/ i5 d. O$ E, u

3 E9 r& u) H7 p  n5 P9 L" mto update-neighbor-total5 g5 ]/ h. x* Y! b0 X' ~) B

" s6 I2 E2 Q& r  O7 p1 _if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" S* ?8 `' [7 i- b$ b. \

  P$ S- s/ P* Z

7 n2 }3 G; O2 }+ Mend
) |9 u; b$ B( Y3 e& B. U" d( K, {
to update-credibility-ijl " I7 \4 ]: a6 `  _8 I, V$ G

3 H2 L2 \/ e3 f;;
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。  C6 a$ E' l- E, T$ x
let l 05 \2 Y' n5 `% l: ]$ q5 K  C+ E; f
while[ l < people ]9 i9 i- A' q9 `& U+ ~! L; e
;;
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
  M4 k) K. P/ J6 C' U& n& l. C1 b7 H' R[5 m$ {( [! Y* H. H
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 F; H/ Y# P0 M# xif (trade-record-one-j-l-len > 3)+ P6 W5 f! O: p* ~
[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
; Y7 M- e& d+ N  {let i 3
8 a) F5 G# k3 m9 z2 h7 T7 s9 u' Qlet sum-time 0" Q9 O; p, t- P! R9 r
while[i < trade-record-one-len]+ ?! n6 N* G3 v* _8 v: T
[
& c  t5 C4 @/ Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' O, h4 y8 Y/ n
set i
* C  Q* I* y/ G9 a  a+ {9 V1 c( i + 1)
1 m3 Q7 I+ n! v3 o* A; N
]! ?0 q3 p& L- V' Y
let credibility-i-j-l 0
- ~  \/ I4 @) `/ I: k- b;;i
评价(jjl的评价)# \  D# K# H" Y
let j 3' k: ?2 N: t" o8 V+ Y8 A# y4 y7 w
let k 4
% v# N( O* f: U; v% h0 twhile[j < trade-record-one-len]
& @8 ]6 t5 K. X! u4 `% V[
7 `2 e' T1 L2 |, n& Kwhile [((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
4 k$ r) S" l9 m0 {$ r3 a% oset 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" [5 N# j  }; _* x  qset j" N! p* q/ X2 d0 @2 C
( j + 1)

* }1 E# Z3 B$ ]/ q  R]3 x7 c' H$ ^* R: t2 \6 Q
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 ))4 v2 O1 G! b# M0 G( a* t
! n. Q3 H$ ^4 `. H( h

# A/ k% j3 e( U  u$ Y* }) _% Vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). r6 ]8 `5 P  c  Q3 M# s7 f1 ^
;;
及时更新il的评价质量的评价
; e& {$ O4 D: B3 E- Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- l: `- B( y8 E( ]
set l (l + 1)% ~* A3 ]8 G2 N5 P4 K
]5 b6 i  i9 }8 C; B3 I2 R
end, L& r8 O/ ^  E) W
' Q* t/ L5 \& K; @4 @
to update-credibility-list9 {/ g5 f, W" Q8 F, g
let i 0
/ v  H" ^- Y: \! b# Mwhile[i < people]
# u; p2 E% v5 c5 h# A/ s( ]+ P[
' V+ e) D* o! a3 }1 A4 d4 x, ~; rlet j 0, `9 q3 ~( V1 T& X4 e7 R
let note 0. Q: |, U7 q  \- s5 [( V
let k 09 h% F2 B) v# A- {
;;
计作出过评价的邻居节点的数目% G* j3 |8 o% k" Y! v- L1 x4 B
while[j < people]
% v" ?; p7 e$ @[
9 i3 ~6 f( q; F! L9 xif (item j( [credibility] of turtle (i + 1)) != -1)# L, i* X" G: L: \  e1 b$ V. g
;;
判断是否给本turtle的评价质量做出过评价的节点
% v) D' O) Q; p; E% ?[set note (note + item j ([credibility]of turtle (i + 1)))
0 `$ u8 N+ Q, @9 f;;*(exp (-(people - 2)))/(people - 2))]
, i) ^+ {/ |- U$ R! e
set k (k + 1)
, n9 T. H; ]5 }7 A# W+ R. r4 Q]
& d( V% \& z; N+ k& q& zset j (j + 1)
& Y! `6 d$ G+ A]7 a4 N+ L& Z/ w- \6 W: ^7 E
set note (note *(exp (- (1 / k)))/ k)$ K* F; j5 I# }3 `8 C7 B* }6 _
set credibility-list (replace-item i credibility-list note)8 G: P% i' R/ S4 e+ S
set i (i + 1)
( ~/ w) g. G- {' U]% P! p; x- G$ o3 R$ J/ @9 I5 P
end
5 i, h0 g* ]. h2 c4 J1 T  m& ~  u9 {6 P5 F/ h6 C
to update-global-reputation-list3 Z9 r+ t! J) N  S+ Y
let j 0
) y* d! W" q# Y4 f" v( Swhile[j < people]
! T( j- w  S# b' g' w[( v* e8 N. Z5 j0 ]
let new 0. A6 h9 Q% W$ D8 b
;;
暂存新的一个全局声誉
( R0 b& S/ c9 }# X. C% O  Blet i 0
, G/ Z) P2 f- t* L" a* f! Q" Plet sum-money 0
4 P0 W. N* K! G+ o, O7 a1 m( Q/ Rlet credibility-money 0
, ~* i6 j/ ?$ cwhile [i < people]
$ i( V' `! B* G+ `* E; v% c[9 k7 G$ {' Z% x; {
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 x+ i7 U  A) o: M
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). b+ m9 v8 r' e+ V. i
set i (i + 1)9 b# Y* N) m/ [1 c- s
]- i. r9 L" u3 x1 z+ a
let k 0
3 r! m2 A. o' c( `3 n7 ilet new1 0& C# _/ Y, }9 Q; a$ {3 k8 s8 y6 C& F
while [k < people], J' v, v5 d) M9 g$ \% `, o4 Y
[
0 ^! a' [& W% r$ J+ j0 Fset 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)
; s. A( r0 o! i$ a# iset k (k + 1)
+ p; o  _. X2 D]
) Z3 D) z, [7 u7 V- n% Sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* S" B- t* N( k4 Z1 kset global-reputation-list (replace-item j global-reputation-list new)
! f5 R- {  P7 T3 e- v) d  wset j (j + 1)
& h" N. D6 W( A4 r: ^% P1 O]: Q) `( ?3 N6 v' ^0 O
end
: _! l# W9 l2 U4 c# \# l9 `' Y
+ _+ R) t0 T7 u$ u4 \$ m( W3 L( A( S3 q7 }2 ~

% B3 C2 H# d6 S$ ~4 s5 dto get-color; T5 r! [% \, r
* q/ {3 F: T. C; D& d" v6 D
set color blue
' _2 l: @4 Y1 a  D, r- n& t( A
end
6 Y' S5 |1 ^1 ^7 [# E
1 n' d# Z& ?( ]3 l2 n# vto poll-class; c3 @3 j) {% f) x1 U, M8 H
end- J# R% G7 v( \& s5 ^, }+ q
. ~4 L& [) D0 {4 `
to setup-plot12 |" ~1 S  @0 |/ v! D+ Y
% u* F* g8 \. B% g. Y
set-current-plot "Trends-of-Local-reputation"

6 I  x5 ^  Y# T- P$ |2 P2 c6 Y2 N( l5 q2 H$ D3 g
set-plot-x-range 0 xmax
# s+ n" r- l# J8 T& C' i

7 t% O& F* e: N& k! b0 J5 [. vset-plot-y-range 0.0 ymax

( g1 Y- ?: u: j  ~# w# K, S  Hend
% {$ U" C# ]6 A7 ^$ P* J0 r' `! x' H
1 z6 G5 H1 O- l. rto setup-plot2
& u/ |6 v% z& `3 k0 |
7 K+ a% G- j3 T  _2 Z0 Gset-current-plot "Trends-of-global-reputation"

0 ^6 ]3 M/ d  j; g0 f; ?  g: R0 {" N; a! K; L7 U5 j
set-plot-x-range 0 xmax
& y+ l& q& r& o

; ^5 }& X$ Z/ e, gset-plot-y-range 0.0 ymax

8 a% G/ O; I2 b( r' @end
% b4 Q8 B- c1 L* _* a
' ?1 S+ A! t& A9 dto setup-plot3
. E' A7 G0 i; B$ Z  n3 j* R* \
- q. y) w8 N7 A7 I$ O, xset-current-plot "Trends-of-credibility"
" p: [: Q$ g5 |5 H6 L0 x
+ Z" O+ C+ S. N+ k; }* {
set-plot-x-range 0 xmax
1 F  M% k7 [) E, A
. Q6 P0 Y% ?0 h
set-plot-y-range 0.0 ymax

+ y2 @; C1 g2 m0 u  O( N5 w0 kend
$ k6 m' a" {+ C8 A/ Q
, H, Z& X* }4 U" p% o, [( M3 h  w9 vto do-plots
6 A4 \0 w% |, m" i" Lset-current-plot "Trends-of-Local-reputation"2 R2 v9 j& b6 B1 Q; x
set-current-plot-pen "Honest service": {6 e2 d: s  h' B5 u
end. O1 \7 j  c! L7 e0 S1 j. N
" o% f) W$ n; w& X
[ 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.
& h8 T/ [$ e; z, X  _# {8 \4 M. T$ K6 P7 w% Q
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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