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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:6 `/ B5 C( q- s
to do-business
: T/ Q1 L, n' Q# n$ E$ l rt random 360, g; q' c; s- v: h8 [( ~8 y
fd 1
' M. r- W9 \+ a: t* Y8 E+ \ ifelse(other turtles-here != nobody)[$ t( P# j2 v. ~8 Q! a0 S3 w
   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.8 Y- H. p; H3 i! W8 [8 Z) {; Z7 r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % o5 c% J6 w) h# ~0 w( P) j
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer8 l2 M& @) \& U# H" P
   set [trade-record-one-len] of self length [trade-record-one] of self
" w0 O) [; w: P$ A2 h   set trade-record-current( list (timer) (random money-upper-limit))
* A5 w+ Z- d- Y$ {# B( g4 w$ x0 t% s
问题的提示如下:- u. \+ `7 w% ^/ z

8 ~5 t1 B4 V' Berror while turtle 50 running OF in procedure DO-BUSINESS
$ m2 M% U7 x3 u  called by procedure GO+ L$ i% |9 L) R" Z$ `
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. b( j1 o0 \2 ~9 \2 r. k( W9 F
(halted running of go)
3 j( J+ d, b3 u) h, g
+ L0 `( O5 P- w. R' l2 z) O* o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~~
: _6 A" t+ n7 ^3 u3 @$ h* Y3 [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
, K2 x% V. b$ ?" A; oglobals[, L) E4 w1 O+ e2 r
xmax0 v$ D, s; u# O4 G1 u# D
ymax, G8 ]' v2 c. f- d2 z
global-reputation-list
. G. ^& n' f9 ]- g
# {; H9 r* X4 d$ Y7 x;;
每一个turtle的全局声誉都存在此LIST
$ I) H) u3 m3 x. K$ @; ~7 `credibility-list1 L5 r! @  t' d6 H5 h7 G- ^
;;
每一个turtle的评价可信度' k4 j' s/ `3 r; F2 k1 |5 E
honest-service; w. K& b3 d+ c: j/ a: p* l% X
unhonest-service' l0 l! L2 Q6 m. r
oscillation
! {% h# @. H9 Prand-dynamic' ~& C" p# @8 @  x2 L# k4 e
]
6 ~: L& d* G) S5 b6 ]9 ]  r$ F7 Z8 p0 Y! |, I- O# ], R. I+ {7 c
turtles-own[
% h; K& s  S' ^1 J1 _8 W2 ttrade-record-all7 d4 m1 Q% W% e+ C; ?
;;a list of lists,
trade-record-one组成% l, V6 y( A) f% _+ H( T3 J
trade-record-one6 o. C4 f6 [9 v$ D- N
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 b9 f# `' I: O. @

* i) s0 K+ X3 @% X/ ];;[
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]]
2 w7 D$ t, Z. L, e* 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]& g) A4 p$ s+ `2 ?# 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list
0 W  _; O6 Q- |# c, z' L7 Sneighbor-total
. y0 b( ^8 P6 I  s) E;;
记录该turtle的邻居节点的数目2 |9 Z: {) f8 ?
trade-time* y. {, n$ P; t
;;
当前发生交易的turtle的交易时间
9 o: M4 P# f7 ~# M! ~appraise-give- q* m( q5 X: Q- k% z! g
;;
当前发生交易时给出的评价
3 Q  |3 h- f- B: b/ Z$ zappraise-receive3 M( l( I% n; a( I/ Q  x
;;
当前发生交易时收到的评价
5 {6 G& W; p6 Z2 d0 Lappraise-time
) J: J0 J$ C& X6 Q0 q& f+ Q1 H;;
当前发生交易时的评价时间
0 [5 O: J& ]4 _4 i9 f9 Zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* L$ C4 [, m6 H) X" Q, A! y! Atrade-times-total
6 \, I8 _& p3 [+ B% C;;
与当前turtle的交易总次数
9 o$ ~% L* P3 {+ |: j" r2 ]; b' ?trade-money-total
% _# {9 v, \" r6 s- l& D8 f1 O;;
与当前turtle的交易总金额% g- u8 L9 E) w! V* E: `+ v
local-reputation2 D# p% H" b; A; w, s
global-reputation
! o6 Y+ J; |0 C! }# i+ x7 r3 G, O6 L9 i5 ~credibility1 i4 k; n, W' x9 ~' Q6 A
;;
评价可信度,每次交易后都需要更新
/ h9 j9 _" }: v" Ucredibility-all6 M9 t9 q" e# k" T. P, y& p7 s
;;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4 N8 b" w9 a$ D' ~9 M

" o% F3 F! Z! a  [5 S  D7 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
( ?. n7 Q( d! a6 \credibility-one( m' M  b# h# d" p1 R" `  [8 n7 ~
;;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
; t+ k# U. H, e) k1 ~. fglobal-proportion4 s' ]1 F/ L+ |+ F
customer
! n8 @2 E8 g) r8 s7 mcustomer-no4 {" v7 ]% c8 F' y
trust-ok
: a- g3 z$ [6 etrade-record-one-len;;trade-record-one的长度
* f* g" O3 d  b( Z. {]
4 M! n; B3 G0 y: X3 K5 g9 u$ G2 N% ~: B3 K/ X
;;setup procedure. Q4 U+ h  i' G9 @# z

3 w( _6 M: @  [. `+ \2 Uto setup1 u; s0 C7 ?' f/ i' x' x( v

9 J, H  z% p6 i. R4 {ca
; q9 s  w9 G; Q5 h
; Q) @3 j! R, m  A7 _$ D
initialize-settings
' u% P0 s% o- D. G0 m, F5 M
" c! {/ N4 M' Z
crt people [setup-turtles]
  \5 C( B  Z4 T. m4 L& |
* T% R4 @) T4 W2 g; \
reset-timer

+ ?8 |+ b+ x' R; W8 A" J* ^6 u
; i6 @8 t" V! C4 s7 K( hpoll-class

0 J' O' a* e0 n) U7 B
6 X. @7 d/ s( V, U  L6 w0 ]+ X. b8 ^* ?8 ksetup-plots
5 j$ |+ R4 u; R$ g5 C8 X

+ G& |/ e5 C5 {' c$ `) kdo-plots

  ^, N; v+ \- U. c3 Cend
' b' B0 A7 s+ s) Q) ]
4 n7 k- A; t& ?to initialize-settings. V) \" Z4 g2 \# B0 ^# E

0 ^, Q' n+ ]0 S# }9 Wset global-reputation-list []
$ _  f2 U- i& |# n! h, U# t6 Z
) Y5 I- \4 v0 t' W/ C
set credibility-list n-values people [0.5]
1 i0 k) y$ ?; x! {, @5 G+ G

! P0 C7 Z! }3 o4 ^) O, w5 f+ gset honest-service 0
7 o+ O: ^/ b" P9 q

9 k0 y8 }( t# Qset unhonest-service 0

; r  o# K: u9 I, K
$ Z/ @2 N& w/ E6 k3 Nset oscillation 0

. E4 G4 P$ C2 ]  h4 K% ]& R" e* i+ a. j- ~
set rand-dynamic 0
" u- W0 G0 j2 Y; t7 \$ b
end
# Z" L4 D/ u) U
" |/ _! F4 x, }5 Uto setup-turtles
& W4 y/ l1 f! Q8 u: m+ k" yset shape "person"" h0 L! M7 p) R
setxy random-xcor random-ycor
) _( t/ h0 |0 n% J6 B, Mset trade-record-one []2 I  Y5 g' s  s
4 B2 e$ r2 T+ P: X5 }, Z
set trade-record-all n-values people [(list (? + 1) 0 0)] 1 d6 b4 ~, m5 b* K6 M( q2 `

/ @# H' A. ?( T. jset trade-record-current []
* L6 t4 s7 f7 V" Z1 Mset credibility-receive []1 p. t2 x* M, c6 o( p+ u
set local-reputation 0.5
8 G" o; k' m5 B; ?1 |" R! |set neighbor-total 05 E5 `& t) G- z8 b
set trade-times-total 0
( U$ D# T3 D' ]set trade-money-total 03 l) q! v) z4 ?* Y
set customer nobody" L* N, O+ S$ s3 S5 R& K
set credibility-all n-values people [creat-credibility]
2 x. r6 M* M4 d  ~* i& kset credibility n-values people [-1]3 O  U* ?6 @: ?- K2 ^' l7 U9 W
get-color7 i( L- C0 X8 z! {( [- ^0 s. E

0 |( o" F, J% j: F! w1 uend
' h" q/ n! P3 u! U+ L& }1 _1 b* y1 ]1 `: b! H  Z8 D& d0 b
to-report creat-credibility0 f# S5 \: o1 u/ _
report n-values people [0.5]! l6 r: M% _8 T! _
end; F8 A; w0 a. v4 H2 f2 Q8 ]

9 A% p9 ?7 ]$ D) v( C" Uto setup-plots8 K4 U( u1 O7 U& s6 h

% ~& D2 z4 N( A; d2 a  Aset xmax 30
+ ]2 D% {8 s  W. X( ~- c3 k

( h' a0 P7 x) @8 |$ Wset ymax 1.0

6 M$ j" d& @. n: ~  X  E7 s: Y* K( b% y; O! V: E* R
clear-all-plots

7 p: e: r# J; t$ v- a2 b
: y6 a& d) w. Z( c& D& U3 rsetup-plot1
& P3 w5 U9 j; j9 T0 a' T
0 y  T  i7 r5 r$ S, w# r6 L' Z
setup-plot2

" _6 r* c; h# b! c  U/ V
2 ~' {: G' N8 L# lsetup-plot3

) A" b& W& V" V  V8 G. Y  dend
7 E2 N2 |' t3 d9 c2 L; e0 B2 a9 g/ `, N6 Q5 U  ~2 |: q
;;run time procedures
5 P9 O. e% u: L  s" z2 X, Q) P" ^' d( a/ o# A4 q! K
to go
5 Z7 ^: X4 V0 {* `3 i9 `* g, \% K: S
ask turtles [do-business]
* u4 {& s4 H; H  u( }9 g1 x+ y; M6 V0 Q
end
8 i. a2 J0 c8 L; q$ ?2 D$ S0 o9 w( E1 d# o1 X+ W3 J' d8 j6 g
to do-business
& I" q9 P1 v; j1 M
$ L8 ?9 R  G$ G2 Z) D1 Y2 c# D
3 j" _* X- v: W
rt random 360

1 J" a( P- D( U  S& l3 j3 A/ R( |  a5 ~; v
fd 1
5 G% g+ L8 i& j. Z, Y

- I3 r) I3 I% s1 fifelse(other turtles-here != nobody)[
/ Z6 v2 P5 G; ]3 I
. r4 z+ q, T" K- G2 X
set customer one-of other turtles-here
: v+ O+ J' H% L- m) q9 s& n" f
1 M0 n& u5 e! b' d- A3 b
;; set [customer] of customer myself
8 n! G" i7 V! e$ d# D2 B

% g) H6 D! R' R9 C8 ]3 bset [trade-record-one] of self item (([who] of customer) - 1)
* t1 s9 e4 N9 [" Z: E+ T- o[trade-record-all]of self
. N7 Q& z% J" {2 @, U" e' a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
. J) d- |2 v' b, n

" ]; w) l: f/ W' }6 f# R, eset [trade-record-one] of customer item (([who] of self) - 1)7 F- R  r% l7 t* E
[trade-record-all]of customer

4 p  o2 h+ c; s8 S
6 r; {+ T1 s0 H" h  Y. V; N6 Vset [trade-record-one-len] of self length [trade-record-one] of self
7 }! B! X6 ]- r" `: d. c
* h& E: U0 o: h1 S( I
set trade-record-current( list (timer) (random money-upper-limit))
, P: S- i& U" W! G3 E8 P

  k& X3 L# f0 k7 Gask self [do-trust]
# j  s6 Y& [% V! j;;
先求ij的信任度
1 i, V$ S6 P9 B/ R* ~3 H6 u
/ U$ v9 R0 S8 ]7 ]6 Qif ([trust-ok] of self); T4 t; C+ }5 A4 K3 G7 e4 `4 X/ M- V
;;
根据ij的信任度来决定是否与j进行交易[
, }: N2 w; F4 N# P6 Kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 E7 v4 V: n$ d9 w: a4 v  m4 h$ a- U# Y8 ]
[
9 G+ ^. L9 |1 R  e. v5 X
" T* b: I4 u/ m. @& ^. Z
do-trade
! |  ^* d: X5 J" k! `/ c6 h4 f

/ o' ~" ~/ f5 p6 q) m3 T. }  Mupdate-credibility-ijl
) m9 U! N0 F3 }4 X

/ g* a% @( O# t. B1 Iupdate-credibility-list4 [5 l+ X: }; E! Q0 Y+ y
, H! ~  [# h3 l% y% {  l6 q

7 y& K; z1 f( C& jupdate-global-reputation-list

0 J  F0 o* x$ m9 C2 j9 a( a6 L
( ~' F! @0 s6 C5 i2 ~4 Rpoll-class

0 ^2 e  w& S0 M: ^: v/ d; G( x6 O: M- b' N4 F( v/ b2 ]
get-color

/ g2 ~5 j9 A3 ?* ?2 @
7 C* h+ {0 k$ w1 u0 V; x]]6 y# t8 l/ U: F/ C9 H  m2 A: J
0 x% Q7 ~+ E: X4 t7 m
;;
如果所得的信任度满足条件,则进行交易8 g7 y  K+ q* E) l( K
- `: ^. z. x" o- b$ {; Z. t
[
4 N( j) H1 Y" R
, I0 z) h& J0 b# P3 q5 i5 P: J, H9 z
rt random 360
4 |  ?- c6 d. ~& F, l
" t4 U' X5 ^" ]
fd 1
; v9 [/ o1 U; ?
  I7 j7 f4 S8 h; C  ]4 G
]

$ L0 q' g  [/ y5 B+ Q0 O! c
3 P  L9 ?- x; Nend

& P" f' `( r6 ~& D( R- J& b. {& v- o! _, C( g& ~2 ]" ?' h7 \; v: Y
to do-trust
/ n$ O( u2 M. L, M; nset trust-ok False
% s# b9 C- h- R' B5 H2 I& T$ @5 O- ?* h& r: I5 C7 \

& c; Y2 U- o7 O  llet max-trade-times 0( T  G( ~( Z* E  h
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- k# d" {, W: c* R, A; T0 O- b
let max-trade-money 0; h6 M: L! M4 j2 N" h  L5 S4 x
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], M4 i( X4 T% f6 [5 y4 K; d
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); H% m( ]! A+ J$ i5 e5 n
: R; s( c+ B; Q$ d( F% }0 ]

( [2 _* z: I; V7 s1 Hget-global-proportion
7 a/ `: B& G1 j- |let trust-value1 K4 _7 ]. Y7 t& Q3 }* Y0 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)

  U0 b( {; _+ x& h% Aif(trust-value > trade-trust-value)
) D8 C: _7 f1 |6 G; L, h! J4 w; y[set trust-ok true]
1 H" y4 a8 x" P* @7 Oend6 P/ N8 h5 R# z) U

" ]7 p. S# a, ?  T8 E$ L  bto get-global-proportion% f; ]6 A, v! l7 Y- M2 J. i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 T5 @/ Q; ~: v3 T- b+ x+ Y
[set global-proportion 0]
" f: [# i$ p# t! a[let i 0
. P1 S, h" C5 {' {$ ulet sum-money 0
8 x; y) Y8 p% ~( V. z& rwhile[ i < people]
3 u4 Z/ t( u+ {0 p+ l6 ^8 t6 s[' _6 V5 R2 m% m) ]6 K* D
if( length (item i
4 ~0 h  ]' D) C/ x[trade-record-all] of customer) > 3 )
3 t+ l! y8 A% f5 j; N3 v
[
, {. I! A) F! i# y+ Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ P% L+ u, b* O4 l9 S. I
]% d% @" r/ m: Z* X5 L! ?
]# v) Z7 \, S. |* {
let j 0! C1 z+ }: A) y/ }
let note 07 u# Q# U3 q  r, D* h! i% x
while[ j < people]' A+ }* b/ C# M! J; G- K1 z' `, @: B
[
' ]% r% N' H, t) F6 Z5 Mif( length (item i
1 T% ]* F" ?7 A2 S[trade-record-all] of customer) > 3 )
4 B' D8 E9 I- Y
[
" Y! q, @6 p5 R- n! Nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! I; S" H" X# Y  X! n6 j( _) C
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 `6 j0 J  c2 R0 j: L7 u. L& w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: |# o9 {" @+ _. X1 u4 g" [  g3 d
]
( v- E+ C9 p# T) x4 ]3 }) S( o]
9 h1 ?$ p/ H1 M% j; b3 v2 ~" A, n" Tset global-proportion note
4 p; _% t2 \: C. V7 i]
, \2 h& f( I& _end
$ D* W$ \  V) _4 U2 N/ W3 r( c
) l: g2 b+ {1 P3 qto do-trade/ E- I/ i) c9 S, D. D. g  t  R! o
;;
这个过程实际上是给双方作出评价的过程6 |' j) S- Q5 T& T6 ^
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  h% C/ w4 i: X, M8 f7 q: w* {; r* x: |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 k# |; W; F; v, A
set trade-record-current lput(timer) trade-record-current
* z& C1 n6 K" v* y8 u7 i;;
评价时间  n  Z9 u" I" j* l' P. v* q! e# n
ask myself [0 J( M) m6 `) _1 b  V
update-local-reputation
1 Y. `" L$ Y: Iset trade-record-current lput([local-reputation] of myself) trade-record-current7 O# B) X( ?: a* S
]: N" L# n( N6 B9 q: c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* r0 @; X' W0 V' ^, L8 v;;
将此次交易的记录加入到trade-record-one
% F$ c: \/ m+ }9 O  xset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& e/ {6 ?3 _# ^
let note (item 2 trade-record-current )
! Y2 {9 X+ d7 H# A, tset trade-record-current
# T% H) n8 G6 j* e& g  }' Z(replace-item 2 trade-record-current (item 3 trade-record-current))

% K# u6 |8 A7 l0 Q0 g; R2 Dset trade-record-current) t& r; m" N0 w. C! S
(replace-item 3 trade-record-current note)
# j# y; a& O1 X3 a
: Z4 A$ r! y$ T' N

& q+ H- t( x5 O$ C! ]ask customer [
/ j" y$ M! `) |- c8 S4 dupdate-local-reputation2 M% @  F7 W, S' m6 Y' D
set trade-record-current
7 B, p/ g5 T  U, D& e3 I) B# ]  c(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. S* D8 e+ T' j7 e. f7 F! i]
9 x3 D* p: ]- j5 z9 ^
+ N$ p2 O$ {( B( `

+ {' A: G, l& P3 `set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer8 x5 Q" u% J+ |7 @% r* C5 m& Q1 b) e7 x2 W$ @

: P3 X" g1 o2 b; h; B* Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 B4 [) x& y  s5 d6 ?" h6 V& ]; y;;
将此次交易的记录加入到customertrade-record-all
/ G2 D8 R3 |5 L$ m1 A2 O7 U' T% Vend
: W" o0 ^! g9 l* A# D0 B/ r1 R+ s) D
to update-local-reputation1 x. m* j5 K" a" P* C  J7 _
set [trade-record-one-len] of myself length [trade-record-one] of myself
* ]& d* n6 [8 z$ I. G: V5 n# |+ s7 c

" u0 K  ]0 g6 S;;if [trade-record-one-len] of myself > 3
  i0 x- V3 H$ x( C+ {& {' o5 ^
update-neighbor-total
1 u! ?* ~" z, C  {;;
更新邻居节点的数目,在此进行) `: [2 M4 k1 @6 M+ Z
let i 3
& W* Y) f: O$ M; A/ zlet sum-time 08 d* Y, V8 q3 N3 h
while[i < [trade-record-one-len] of myself]
* B, f. a/ ?2 h[( q( I1 s1 x; {4 ?8 z2 T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, h9 V* @& y3 ]set i
$ i/ R9 w% k9 h: Z( L, o( i + 1)

3 J9 d) x  a/ U# t# ^& p: j]
" k! l: G5 K! c7 L( p! llet j 3
4 _9 P. v4 Z/ Z0 }# Q1 wlet sum-money 0
, U3 X0 G% i) V2 b& n# Hwhile[j < [trade-record-one-len] of myself]
% ]# f# q0 u, u4 N* f9 w+ \4 ]( b; a[6 C8 \3 C/ ^" ]2 t6 S0 b" [0 N/ @9 i
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)% t# I& \3 A6 Z% I
set j* w! i0 z1 p! g5 m; n7 v. P5 g4 q
( j + 1)

6 `. c7 V; u4 U0 D, [5 C7 Q) A. x1 S]
0 u( q. C8 }, f5 Plet k 3
$ r% ~1 Q4 w4 llet power 0
; I7 E9 W$ J% m4 S  @let local 0
7 U: r+ q* x( p6 hwhile [k <[trade-record-one-len] of myself]
' H5 O4 y; p7 `# W. f. b; p/ S[: X3 w0 L$ R' n$ }
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)
# |; s' B4 I# {. Z2 N. Lset k (k + 1)
9 P& p8 Z  ?" i  {" O5 |1 f* z% A]9 R8 }7 [2 i' E8 a$ I& r+ [& a
set [local-reputation] of myself (local)+ r2 F- B6 N% [6 w' ]
end; x' T  R8 o; j6 ^. @7 M- b- Y

! u6 q# n8 A" y* g) z6 M$ mto update-neighbor-total8 b$ d9 l5 W( Z" L2 P+ c  j

1 y5 F1 X. X5 s* q# B, Hif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& b: l) Q; w! x/ {$ _6 F5 F0 l% ?  D, d0 l) ^6 ~7 i) o0 ]
3 J! F' N5 }1 \
end
1 E9 C# N# Q) L  D- Y  L! @; L* A5 r. G2 y/ D
to update-credibility-ijl ; Z- R, A) T. C

% x, H7 x: Z; v# j4 [5 x5 |* H;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。3 k( T0 T, O' P  Z" b8 @4 y
let l 0
% v. ^0 r% t7 B/ n0 Ywhile[ l < people ]& t" q7 a2 ]4 ?1 `2 i5 P  B
;;
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
7 I' v' ^4 j4 h' A[. G# g4 B/ }8 `8 h$ j3 V5 m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ a- l' i9 s5 e/ g$ }
if (trade-record-one-j-l-len > 3), ^$ i( n) r0 N
[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
. u# L; R. i- l+ d8 l& S/ Dlet i 3
& i8 }7 i, {* s! d& A% Nlet sum-time 0
& D7 d8 e9 |! Z. r, ]while[i < trade-record-one-len]* ^/ i1 B/ V' T0 Z2 [
[
; H8 k" E& d" J3 W8 m- wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 a- c9 L2 @7 @. F" J* m# N
set i3 O0 d- P+ R6 |- e! ^
( i + 1)
7 T6 D4 {6 E* Z/ r- T; r0 O
]
9 `9 ]3 u7 s  g* ?4 D/ ?4 jlet credibility-i-j-l 07 Z  x5 W1 O* i/ Z0 x. q8 h! R1 u
;;i
评价(jjl的评价)
( O0 U! I9 p/ }0 ulet j 3: k0 Z4 m2 z0 [* {2 C5 L
let k 4
9 H1 N$ C' a' mwhile[j < trade-record-one-len]
0 g* ~6 P  S3 D3 a) s[
/ {, a) D) o( m& Twhile [((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+ [+ v. ^- o. ?0 z8 B4 t
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)
' v4 p% \# q4 F: fset j
4 @* P# U& i+ a: T& V/ Q( j + 1)
+ [. Q( N% A4 |* e$ Q
]6 |4 j; a. L; M3 B' ?7 F; m
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 )); O! Q2 ]7 w* A: ^# J
2 u. z# w3 ]% \

6 Z# U2 l( W: [3 \8 Dlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): S% F2 f* }- U6 l
;;
及时更新il的评价质量的评价' j& W2 f+ b8 g/ T' H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
* X; L, P* `8 `; Hset l (l + 1)
: F& G+ \) G# M]# A' T1 S6 {; O* p) G& v/ A
end
- y1 [  r' R/ d; _: y! k6 Q1 Q3 G2 S7 ], t7 d
to update-credibility-list# V7 f, P7 f* \7 E  _5 X
let i 0/ Z8 A% X2 e: s% q
while[i < people]
; ~  x8 j( P+ e0 V- z[& E% b5 }5 W" J8 E* C* P9 x* C5 A
let j 0
6 }3 Y: o8 w* U( C. Y" P% jlet note 0
& K8 f6 y& t# w5 ^let k 0( E# m' ^2 W4 w" X
;;
计作出过评价的邻居节点的数目
: p+ F9 d- l  P" C! mwhile[j < people]% K+ F3 S' b+ V
[- p- P% G/ V) b* q, C
if (item j( [credibility] of turtle (i + 1)) != -1)" J; M0 j- c) j4 F2 S( [' E6 A
;;
判断是否给本turtle的评价质量做出过评价的节点
7 }( h$ u6 O# q7 M# \! ^: N+ Y[set note (note + item j ([credibility]of turtle (i + 1)))
1 {" p8 {6 \! T- V; Y+ X+ {8 o, v;;*(exp (-(people - 2)))/(people - 2))]
+ L: p# S; r7 ~" d- w' X8 h* R- K
set k (k + 1)# x  Y7 k3 {: _* }0 \* H% V
]
5 j* b5 j) g1 }7 ?, c& Y. c8 q9 lset j (j + 1)
. k0 S1 ]" h1 s! {3 d: Z]* f7 L( l+ \  m$ e, c/ q
set note (note *(exp (- (1 / k)))/ k)9 F2 z( b9 l) b
set credibility-list (replace-item i credibility-list note)" A: r2 f3 D& b) x$ M' ?% C
set i (i + 1)5 {9 |6 g6 H6 a6 _6 m
]& }8 c. T) z* v8 [# @& m  J; o
end
2 n6 \- p  S+ Y/ m& U
4 r8 e  t9 r4 c& u3 R$ {to update-global-reputation-list* F4 ^) a% I& {
let j 0! k0 a7 ]! X8 R* Z- f0 K" N: z
while[j < people]6 u8 [7 I, F0 U# l
[
( v+ z' `( ^0 U+ r/ J. [let new 0
/ G0 U% r5 ?3 u8 i: I) m9 X# O1 P;;
暂存新的一个全局声誉4 R' f  {+ m  z; ^6 Y  N5 t/ y
let i 08 r5 ~  o2 j% \3 }" [
let sum-money 08 Z5 {4 Y: T$ y
let credibility-money 0
) L; h' ?8 v3 ^while [i < people]
- l+ J& k( ~, Y[) d& G* p6 a2 a5 R8 U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! g7 E, w+ ^8 w; U4 v4 O
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  ^0 y. s: a+ B: }, wset i (i + 1)
" ?5 U0 _. E5 a* @$ z/ T9 f]% a+ K) B! T8 I- g; J; N& p4 \
let k 0
4 l; D2 w; Y  i$ g9 rlet new1 0
  e! l2 l; q* G1 r7 l  Uwhile [k < people]; d' c9 u; y* A" P4 `  u# R
[
+ ^. s$ i" a% B  x) g: x6 @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)
; I$ K9 z! `/ A& U; [, h% kset k (k + 1)/ _, C) w1 A  Y! }
]
  M4 h2 E, t( w7 a1 Z9 Z- Pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 8 @7 A* Z3 k, r  |/ Q4 y3 {- L3 u5 }
set global-reputation-list (replace-item j global-reputation-list new)
) v: F: m$ B, a0 a6 @7 r+ ]set j (j + 1)  }5 I' d6 @* K- h
]
7 O0 T2 f7 \: m: P: d/ {* Rend
6 P- D5 X$ f2 I; |
# r5 g/ ?$ _( W% ?8 r: E. S
/ i' r& }& X! J  s
  e7 T% N( S0 I( F$ dto get-color  A/ ?8 y( t& ?
6 A1 D4 @% f5 v9 D4 p+ \$ o9 O
set color blue

6 N+ X/ _& g# lend" g2 i7 ^6 H8 y0 W; e

) {+ Z  L7 Y) |) y/ M3 \) Fto poll-class  X, {6 `  N, O, S$ a) t) H
end
: B: E5 r2 S% k4 A' o  U3 i, L3 U: x$ |5 q
to setup-plot16 @( u8 ^6 u0 i, m5 n8 K
* [8 w- {! X( ?$ h' B0 V$ A
set-current-plot "Trends-of-Local-reputation"

* E5 V! |2 O6 m% `6 F# Z4 O, T# B0 p
set-plot-x-range 0 xmax

" x( I( C6 `# r
4 m3 A- m/ j, [( J0 y) xset-plot-y-range 0.0 ymax

! M) A! G; X8 m: I* e# Jend# ]0 m& T9 J. Z

( f* v: g3 m/ i* S# a( L3 wto setup-plot21 j0 F( ?9 m" i1 {' ^' W

7 D# ^5 Q* Z$ {: z+ `+ y6 Oset-current-plot "Trends-of-global-reputation"
" m8 ~7 r. a, J% ^
- E9 v( Q3 h; w6 d) F
set-plot-x-range 0 xmax

1 X0 B5 @' Y$ p" Z  F/ A3 C' r$ R8 h9 k' r: k
set-plot-y-range 0.0 ymax
* Z+ F( W0 f% C& f% D. _
end1 B  Q" q8 A* s9 W" D
) Q: `6 @2 H5 t' J) L
to setup-plot3
' N: m$ a" j9 C3 y9 {  I, u0 N! H+ i9 E8 }6 i& W$ C/ Y) P* u
set-current-plot "Trends-of-credibility"

" H4 ]  R1 _, ~$ z2 N% O
3 F( P# S% Z' j4 z# B. U; d/ Oset-plot-x-range 0 xmax
0 b' L7 O8 {9 V" ]
, f6 e" b: w' L! X. y/ k
set-plot-y-range 0.0 ymax
0 J) \! p3 t! k! W- o
end# }3 |4 n4 p" L9 e7 l: J
. d4 A* Y1 ]; j" N# |
to do-plots
% m( X  k! r; y" b) B# K: Oset-current-plot "Trends-of-Local-reputation"& f6 y: Y9 V  i' s8 Y" m
set-current-plot-pen "Honest service"0 P2 V& H; _. Z8 ^! K1 @2 X
end! Q5 T$ {9 B" e" v. Q+ G( ?, |
( h' x5 R5 m3 C  \9 z
[ 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 G$ }' k- P: T+ l1 R& V5 k
6 Z# @1 K1 d3 K* ?; \. d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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