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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:
3 ?& ]2 N% w6 M8 F; cto do-business 0 F. y% O2 h1 U) ]7 ]/ g
rt random 360$ M* S( h1 e& c0 O% i
fd 15 w/ L1 |7 g3 p9 ^; \
ifelse(other turtles-here != nobody)[$ k1 k9 _" ]$ 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./ t; n3 b* t5 r; E6 p0 N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    + B1 Z! j- d' A3 w' e$ N
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ }7 G6 E6 S+ {, f   set [trade-record-one-len] of self length [trade-record-one] of self0 c/ p- ?# t: U+ g9 ?6 {5 G
   set trade-record-current( list (timer) (random money-upper-limit))" B3 g7 V% N/ N7 G2 ^
1 N- s% M5 b' L; m& `" y, g% I
问题的提示如下:0 i- ~+ p* a; n( [. d1 U
7 u) Q6 \) R! ?5 f7 ^
error while turtle 50 running OF in procedure DO-BUSINESS
$ R" B7 H0 ~% u4 Y  called by procedure GO. [1 D' t* i! M+ d! B; p; r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! }2 J. d8 C# k/ E
(halted running of go)
3 l- M1 b: w+ G  ]
7 [) Q9 S$ |1 Q( t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~~
: {" z- {4 d" Q  X, V: h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/ C' `+ B# N2 M, Q- E8 D( c9 ]  a) j
globals[0 L- D- |  R. T& W( Y" s; \
xmax
# J8 B0 w0 ^" e& _ymax
, ^7 F! k5 D4 p" p% q& C' w# |$ eglobal-reputation-list
) H2 N' `: x7 @6 Y
% P: S5 t4 N# \4 U;;
每一个turtle的全局声誉都存在此LIST6 |7 t+ `! m' k; M
credibility-list
" D" ~( e& o' K( W, v;;
每一个turtle的评价可信度/ T$ }7 J8 z, Y: t9 J
honest-service$ b+ f2 U# }7 L9 q" ?$ e  y" j
unhonest-service
1 b* J4 n- V4 voscillation- h- W5 C) b" N- [
rand-dynamic) o  v( u) @2 V; X- `- E
]1 e* F- Q& y8 r$ v9 _/ G& `. ^

: Q3 H$ Z6 I; O$ \' ^5 h/ Sturtles-own[6 g5 I& D% u+ F9 w; J  V
trade-record-all+ ]( y3 v7 N: I7 s
;;a list of lists,
trade-record-one组成: @( w) F5 n0 r: p+ u) j/ T
trade-record-one( p% G- n3 x- W% g  c) O3 o" v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
" x$ w2 w9 H) _) x6 ?( ?- K
/ w8 o6 Y6 S3 b. V/ k, B;;[
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]]
0 A. U9 F9 n7 k8 I) B  Z9 |7 [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]# [% T3 ?8 F: K$ O( |
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
3 p7 z. b: b' N' Jneighbor-total+ H9 P8 g& y  I7 `, _% a
;;
记录该turtle的邻居节点的数目1 P3 o7 n+ ]: f# |$ i. @
trade-time
, l& b% F* b7 m* d0 x; M( q7 N;;
当前发生交易的turtle的交易时间
0 o" P0 N2 i% ]" o  T  wappraise-give
2 f8 f0 h3 R5 b# S% s& x: V;;
当前发生交易时给出的评价
8 t, Y) e' x, B8 T7 w8 Uappraise-receive
: ^$ `1 `/ N8 ?, @;;
当前发生交易时收到的评价
: C2 j/ E* h1 W& L' Aappraise-time; X0 C; a! Y! Y) h  k. C
;;
当前发生交易时的评价时间2 ]3 T, t2 z( w) [% ^4 K* l+ d
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& m( F+ U+ o8 q" M
trade-times-total* g& v- Z- L& w: R9 I5 u, O8 G
;;
与当前turtle的交易总次数
6 B. i! r: ?! ~& H% U( r( C( {9 \) rtrade-money-total( J& f) c) _! y% S
;;
与当前turtle的交易总金额
1 _* o8 D$ ?8 w$ u' V2 j* Z, rlocal-reputation* w7 o4 |& P+ {
global-reputation
9 ]; O3 l$ O% F! x; t; k( Fcredibility
& d4 C/ o9 S) a0 f' q1 m8 D$ h3 C/ r;;
评价可信度,每次交易后都需要更新$ j# ^  X0 [" J+ ?; Y8 f; x$ J
credibility-all
8 c0 u! h3 w8 F) ?0 C* q;;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; z9 S" B; _3 ]6 F( f. w

1 @7 q' T) n$ |5 o3 ^;;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
4 y9 R  i4 Q" J/ E9 c* }7 ycredibility-one
3 [# N( C8 s9 j2 Q- v;;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people8 r# {2 [. k# z  L: a
global-proportion
0 {+ n+ L& t6 j! v. l5 W) G7 Scustomer
/ ~- l4 Q8 L7 l0 }customer-no! `; c/ X" _: G
trust-ok
/ ?+ \( I7 t( ~1 [1 l- Ytrade-record-one-len;;trade-record-one的长度7 W% t" |6 ~! |" M- ~* {- q
]
! [' e* b+ |3 W( Q0 |: L$ n
  x" a9 U% B* I: A3 I  Y3 g;;setup procedure
; Q" ~* b7 w* {, C# n! ?3 r- Q- p9 _7 K& V6 _3 [. i' _
to setup
! e5 u5 F- _7 i3 E9 q
5 ^& o2 I' Q, v3 eca

' p0 Q  j) G# o4 `
8 z, M7 g6 Q! o7 n0 Vinitialize-settings

4 H7 X5 R+ S. F3 d% ~& p
( ?# ?$ O+ @& e) ~0 V7 jcrt people [setup-turtles]
# o/ M$ g6 ^  n* |5 e$ N

- ~4 A9 X& f! K7 [# c6 S( Preset-timer

) j% E( K2 A, L- l. v% ]" T0 H7 l7 U: }) b5 |
poll-class
8 V; j5 G1 A3 h5 ~; n1 H1 X+ P

; |$ f. R6 N5 f& X4 D- Lsetup-plots

: v; F4 }/ G# l; h9 J
5 B. Z! V$ g2 kdo-plots
/ [$ r8 j4 c, a1 X
end
7 A9 v- A. q8 R" c2 F
  |* k, ]' N8 J2 K5 I6 Zto initialize-settings
1 z0 ]$ q& Q# V( n- U7 I/ U: r, {& s6 i
set global-reputation-list []
# q: Z3 ?' v. P/ I# Z2 _

3 t9 K; k7 T( b* u* Y7 W7 dset credibility-list n-values people [0.5]

. k: q% J. ^8 p, B( m
; i6 Y5 r6 q% ?5 G4 yset honest-service 0

6 _+ E0 s  X$ v3 M# U3 v1 s8 v6 u7 m" d7 e
set unhonest-service 0
, s) I# ^8 L9 q8 d8 R  V
$ D3 ~# B% s- j& |0 N$ @. n7 [. G
set oscillation 0
2 `. E) h  e0 s& z3 }% }

, N+ T* A- f4 Y% y4 s9 y, Z/ o. s  nset rand-dynamic 0

* }6 ]5 D6 m- n# _+ Z( i8 H& Vend
( [* V# f% c: b1 U
# g' ]% S, |) \7 ?: kto setup-turtles " b* S) x& S7 G% ~& r+ m. ?
set shape "person"' s2 u0 n0 T- Y4 ]' ^
setxy random-xcor random-ycor
5 a. ^- H1 W& e4 o4 hset trade-record-one []
, k1 k6 i' C' {8 s( r
, F2 v1 J- Z2 A- J$ L$ ]/ u
set trade-record-all n-values people [(list (? + 1) 0 0)] 3 w9 g! x4 _* s+ O8 O5 U% y

$ v  o2 S* h7 j( ]+ _6 G% Hset trade-record-current []% }( s5 g8 r1 |3 J; z4 x0 B' o
set credibility-receive []( X* ?2 u, ~  b  c' h- |3 j: y7 J
set local-reputation 0.5" r% j- C* u8 R9 @9 M2 ~7 z; V
set neighbor-total 0
% J! d7 P9 Z& Qset trade-times-total 0
8 G! z  ~  s0 ?4 }0 c( c6 G! dset trade-money-total 0+ V0 J- O: m" E0 O# F2 b
set customer nobody9 D1 [1 H# V) d* K
set credibility-all n-values people [creat-credibility]
5 i+ B9 C* V1 _2 t  g; @set credibility n-values people [-1]
: y% i: g; q4 D% \% {( U. f# mget-color) r  l; n7 u( f$ O6 b; Y9 }

1 A, Z7 N! Q* V& |1 Qend8 s5 [. ?! F9 Z  \' v# U

% i6 G: |) x" a( o8 bto-report creat-credibility7 T2 [1 @! U/ Z$ o3 m6 A" E
report n-values people [0.5]
' ~) w0 |$ a/ ?% Lend
$ ]* h8 ]' P/ l; ~: I6 e' V# X7 c" j" L0 m. l8 z( |3 z
to setup-plots& T/ }6 w% i9 l

' G; H$ }: |7 Q' r" R, w: Aset xmax 30
) j, `6 I* a8 ], f9 C7 _

4 `9 j3 o3 y) O) {, K, }set ymax 1.0

- H5 E5 w2 B3 K1 H+ H' N
! m' }& G, c- ?) @: ~& Jclear-all-plots

8 C1 @1 q. R% p" \0 Y4 t7 S4 l8 N: p0 B( u; p$ a
setup-plot1

/ n( e/ D3 c4 y% I4 T7 `! K3 M
9 k! V2 H# m3 ssetup-plot2
1 P+ ~7 k; R+ i2 Z# p8 X; F* N

; U. o7 I0 \4 ?1 J+ F4 W8 d# zsetup-plot3

1 r; ^" G$ ]- p. f& y& T4 |, T$ jend4 D+ m3 w8 D& m; N

4 _6 a4 e2 s. j2 ^* q5 X9 m5 u;;run time procedures
% j% O, p* G! ?% E
$ o9 B" `6 W4 ?) pto go* o) T1 y, O, v: Q
7 z) k* [$ C3 w
ask turtles [do-business]
0 w6 S+ L! d2 Y+ v8 Q$ \
end, E2 z0 u& O: m, n& w3 v+ F
3 T2 P/ J# b* _8 w; r- t! W
to do-business
( _/ |; D' N( ?2 g! }2 B
  R( Z7 z& ?! m# b8 v

" U0 l- J' u2 E) {5 T6 k1 v  Yrt random 360

  M! Y+ y* D8 @( T9 Y* L  D5 T5 b, i+ r. J
fd 1

( i5 i5 ]' A  v% ]8 [1 l* c# P# N; B0 q- |  W  x8 P5 F7 T' N
ifelse(other turtles-here != nobody)[
/ x! \& x6 j5 M% g% Y: }: Q
6 p: a; d/ X! k/ B: k
set customer one-of other turtles-here

0 B+ u0 I5 d( e2 y% ]
4 Q( b: F2 W: U$ d1 F  Z* `# C;; set [customer] of customer myself

: v3 \) i" L+ A5 f
# ?: |" C" v# ^& c+ o6 |4 v+ eset [trade-record-one] of self item (([who] of customer) - 1)9 F6 E" ]' a" s9 k0 A( A
[trade-record-all]of self
  Z8 d* L( Y& _;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; B6 u$ [& X/ v1 s+ {

  c7 [  b7 b& Z. {# k" Q& y- ~set [trade-record-one] of customer item (([who] of self) - 1)
( y7 g/ q$ g# R2 {[trade-record-all]of customer
9 z. E2 \( e1 X( v- k" m+ y. ^
; t3 _  X% T; Y$ P
set [trade-record-one-len] of self length [trade-record-one] of self

8 H- B$ j# Q. l- c) L; |% ~/ K, ?0 T2 k& `) `5 D& u
set trade-record-current( list (timer) (random money-upper-limit))
3 U$ B! w5 I% Y5 j. Z0 M. v
9 o. P, h2 v1 Q
ask self [do-trust]
3 P8 w) B7 s) J;;
先求ij的信任度$ p- z$ i( y: Z9 D

, t6 |' V& V" K" i* H& p5 z, o( k: Cif ([trust-ok] of self)
# r( H9 Q. i. m# P- i' m;;
根据ij的信任度来决定是否与j进行交易[
4 u+ v  T, @8 }7 y- Gask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, m. e0 S1 c: J4 g/ U2 g

6 ^2 a- t" a3 E6 G+ r[
1 o$ S+ d! P, I) n9 W3 ~  @/ j

  K4 e# i' J1 b: m$ hdo-trade

, ^8 m2 ]4 r' _+ I( @# S
2 p( v: x! v8 M. Q" dupdate-credibility-ijl
; T' |% f+ ]# I9 d; q

1 n6 J5 H; v  f0 d; X# [8 H1 Tupdate-credibility-list
" C2 Q. [/ r/ M/ r# F
" l# y. ^; p4 \4 G$ m3 J

# e2 W" N- T/ n% A/ @update-global-reputation-list
5 i! t. K+ Z8 M" y2 ^: a; \$ ^

$ V" }% j( R+ F+ Q/ g7 \3 ~- epoll-class
% M7 B; C  E$ A

! J# u; Q# S& l" W0 |' ]. h0 mget-color

2 u7 K7 _1 G: R4 d- K! @# T; S3 [. d0 _7 J+ l1 i6 f1 K# x
]]
% ~! u- D1 H8 e3 c/ D9 A/ {" G. y* J1 ]# |, Q* b+ Y0 W
;;
如果所得的信任度满足条件,则进行交易% T# ^1 r. |7 R4 n" m, v0 D
, Y# l* o8 T: N. Q" a6 h  B# ~; a
[

+ o* W$ U0 d( X2 W5 O& \7 x* G  x, M) O7 [$ }
rt random 360

: Y7 N! g, q- k- ]
4 m2 |( z8 j" R$ j3 m7 ^fd 1

% k8 i& I* X! O( f. P  x7 L! V/ r  o% l$ [
]

  y; o" y6 e% T; v
& R5 k2 U; T0 Z2 gend
8 y: M+ s+ M. m

6 J8 k9 x; y9 F2 T! w9 Zto do-trust 6 z8 W9 z5 _# D9 e" B+ X6 }0 `" |; Z
set trust-ok False
; k; I2 U6 l% t, Y3 c8 y$ f$ \' H! o. A1 M

! J. J6 i( T: e' w% N8 ulet max-trade-times 02 Z1 ^' |8 s; _4 i4 F9 V; A
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! p, ]* {  g" S( Q
let max-trade-money 0
# P9 N* O3 I5 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- a( x7 A7 L; Mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) t; @% ^" q/ p: w  t/ _  I5 D7 N% w: E5 R6 k

( ^, ], W4 _8 Y1 J; wget-global-proportion. p  q, ~7 L6 o: P6 ]" _+ e3 b
let trust-value+ {# l$ B* t* H8 Q8 ~" ~
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)
6 A" |$ P/ |9 J0 w: V
if(trust-value > trade-trust-value)
6 ^3 w% _# y9 L$ M5 X0 x( k[set trust-ok true]5 g  r, U, c7 u, z- [
end9 X. Z& w& u) _4 v
. D+ ~1 P% a/ J7 L$ u: \
to get-global-proportion4 \, e) E* M7 q  p4 u* ?/ n: _. D
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)3 G: K+ z7 w7 c7 l' ~- `% D
[set global-proportion 0]
& a& i9 z# C; L/ z[let i 0
0 d3 D7 |' W# u' M9 rlet sum-money 0# C# g! H( n' b
while[ i < people]- I) z! j0 R2 N- s! d9 n
[$ X) N5 C- u5 {; ~( J
if( length (item i9 h+ h9 s* S: w  ^+ F+ ?( Q
[trade-record-all] of customer) > 3 )
7 I0 q* ], R2 g; }
[/ x" B; Q/ j' ?3 _- n  M* L
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), k* p! D" ~% P4 B+ l6 h& H8 N% h
]8 c* N: E1 k$ e7 s
]5 y4 {$ N- `9 Y4 y% F/ {& R
let j 0: z( y9 M- o+ \& y
let note 0" Y0 P' C# c% _+ V. |4 s
while[ j < people]" Q  B- D( q3 N5 {# k
[) K$ t& Z/ _/ {- t0 Z3 U6 b
if( length (item i& X; ?2 C8 y& s1 G- _" D. O) g
[trade-record-all] of customer) > 3 )

8 J4 y2 D) r3 F5 @- j[
& [% a, X5 x% L% a1 Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- D5 o* t* [( N' v+ Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 {$ c" Y3 m/ n1 {( R- L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: `) `$ L8 K; N  M9 w! p/ x]
$ U& |9 E' X- j2 M3 c, o3 N5 []0 \( N8 j% S) K, T- y
set global-proportion note9 ^2 F# i0 `) E1 A1 B1 }6 G1 P
]; y: m3 X6 [# v/ G" R3 b8 v
end
2 ~  r  v4 ]5 A4 N3 y8 t- r* R: m% x- K" R4 Y
to do-trade5 S9 R$ M% `: r( S; N
;;
这个过程实际上是给双方作出评价的过程% T- N6 m, S- _" I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# s% v2 h: _  v+ y5 [set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: U+ S% ?1 z6 }" q
set trade-record-current lput(timer) trade-record-current: \5 ^& O# ?6 m2 G
;;
评价时间! v/ I( h  D$ s. @, N
ask myself [9 O" U# R. I4 M. ?7 i9 ^2 N6 a2 t
update-local-reputation
4 N6 x, @9 t) _* m1 G1 tset trade-record-current lput([local-reputation] of myself) trade-record-current
# L0 R2 U/ I, f/ O& N]
. k8 Q' M, h0 v: F4 i% T1 sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 N3 v7 T" l5 Q1 q;;
将此次交易的记录加入到trade-record-one3 o/ x+ f) s4 a7 G0 [$ R" _! ^
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 ^! a- [* ?, @8 B3 ^  ?let note (item 2 trade-record-current )
' `4 y$ W- m( d3 H& Fset trade-record-current
2 w3 V( C! {, Q. o3 m(replace-item 2 trade-record-current (item 3 trade-record-current))

2 x' m: G4 _; b$ Wset trade-record-current# Z1 H$ T, _  t  s2 ^
(replace-item 3 trade-record-current note)
# O: i- P3 N2 o4 |. j
, h$ ~! m3 M( D1 q

$ B; p, q# F. [2 P& k3 lask customer [4 `; n; V* l- Z; e6 Y
update-local-reputation2 Z. ^7 ^8 `3 e1 g) g$ r
set trade-record-current6 U* P+ E, k6 q' U0 M+ j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
; Q6 X- ^1 Q" z
]$ T% g" c0 [/ j  g* q( a; d
* _" ~6 Z, s& G' m
& Q  ]  }+ C$ J
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
: O! k% G' u( G3 _3 t
0 d: K& b8 ]& T1 `0 }( y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 i2 J& t8 E3 @, U" z2 }3 r9 u;;
将此次交易的记录加入到customertrade-record-all! H0 J) @  z4 Z8 u
end2 v% g6 S6 e: G. ^  {; r/ `3 V
9 x7 n9 ^  e; D' U5 C: r7 t
to update-local-reputation
7 `$ c6 Y$ q* h/ r: j. a, u7 oset [trade-record-one-len] of myself length [trade-record-one] of myself; N- Y- L- k4 N' f- q
/ ]4 {! s1 Y% L2 Y$ A; W
. i+ ?" g4 I5 p( I9 l9 ?. m
;;if [trade-record-one-len] of myself > 3
  n" a; \" A9 R5 z- }( T$ T' F9 _
update-neighbor-total: E+ ?6 ?/ q5 n7 J/ v
;;
更新邻居节点的数目,在此进行
0 _; y; t5 O( k3 E$ s/ M8 |let i 31 a3 n' n9 G+ Q4 B* L: G* u: ]9 K
let sum-time 0
* O1 u( L9 `) Jwhile[i < [trade-record-one-len] of myself]
$ J& S7 l# w. S: P3 {9 g/ D[+ m; ?! K+ c% s8 m' X3 u
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 N2 p8 i) O0 L  v7 N
set i/ I1 @0 o5 t0 v$ s
( i + 1)

+ I1 S& _- u. E' B* A" e]
3 Y! R& l: Y4 H! W+ \7 g5 xlet j 3% |: H9 r% f3 ?+ V9 I6 i- y0 ]
let sum-money 0
" u$ }6 r6 w8 T; kwhile[j < [trade-record-one-len] of myself]
4 G7 l! J( X4 K9 v[& f4 Q# c- N$ U' e7 t
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)
  Y% M3 B1 f; C1 J7 ~$ ?5 @set j
' ^3 O) J& V: O" J( f( j + 1)
2 A6 L! p: E' W/ S9 a! c2 n, X
]
" l' E% C! G$ F. W0 @let k 3: f* x$ |6 o: K# Z* _; n  G" @5 g
let power 0
* n1 A- Y, X" x& Blet local 04 _6 U& p0 H4 \. M6 I6 C' i
while [k <[trade-record-one-len] of myself]
$ F, w0 O& s! w4 ~7 Y4 i[
* l. z' G$ \! Z3 L) sset 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) $ d  [& f( n/ a; Z( k
set k (k + 1)
* k0 _' Y0 ?: v* t$ h0 e* b]3 F( Q$ E0 [2 q# w( t
set [local-reputation] of myself (local)" z; I% X5 M' n9 Q! ~- M
end2 M5 t* Q7 P4 E! b2 |

2 Z, D& O1 T6 b) bto update-neighbor-total2 q+ G7 S/ I5 a* f# c* {9 d3 @
" z+ M+ q6 W2 Q& t- _8 O
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! Y% U' x" j; G# Q4 `
+ J# a/ S' w7 ]

2 t2 ~. \6 z- ]' `# ~1 R6 Rend" ]3 m  U) R& P, e9 T7 @  r* {. |
4 k5 E6 a) p+ H1 J5 J6 ~
to update-credibility-ijl
( A6 r) ^9 g5 w; F' z8 c. f: C1 h  e' I9 X
;;
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。$ [  |+ S0 K$ f$ g2 ~
let l 0
- x0 @& g) l. U9 W0 m1 rwhile[ l < people ]: R% I3 q% M, }, T- R1 o: 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
4 V+ J  Y- {, _% D( x8 p[7 N3 {' z  n7 D" r) u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)5 m2 i2 r0 z6 R; Q- t8 ]
if (trade-record-one-j-l-len > 3)
$ I, ]- W- T. s5 R) B[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
  [% {* a/ \7 [8 U: {2 clet i 30 }$ Z: A1 r$ u+ M' j  v, |
let sum-time 06 W8 m* t: Z' X- ~, A! Y
while[i < trade-record-one-len]
1 \9 T5 {  c" U) x[
3 W/ x* S% V9 k; ^: Vset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 w$ Z: i* y& f1 L, G
set i& n+ G  n9 p- O. K
( i + 1)

% x* t: c( g$ w. f/ N% C]
( {5 l+ ], G3 Ylet credibility-i-j-l 0
4 n1 J) }$ v( s. l$ t& o;;i
评价(jjl的评价)# o& r" @9 o* ]  o
let j 31 C1 z  }8 K" ^0 h
let k 4
" L  Q, U2 I* W4 u9 G  Gwhile[j < trade-record-one-len]
$ e0 r9 b2 W3 @  Q/ N: _[
  n8 C( U- }$ e! 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
& p+ g$ x& z) Y- t& E+ T- v  Q0 ?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)
. i0 \& t* J2 c, g: a* {3 [set j
9 s+ ~* d' J3 r6 F2 ~2 A1 B( j + 1)
" w, ?6 Y2 w2 w/ M* |8 x) E8 D
]
, {8 X! y& _/ S2 Q( w4 Vset [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 ))) `, m6 H" U. O/ V3 h; C6 A/ n
$ c1 x. v# f: I8 u6 }
' x: T8 z5 M5 A  w/ N2 J- C
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# R5 E- w1 b3 P# g- e! h
;;
及时更新il的评价质量的评价
% k+ ^% k6 Q! a+ y! E. c! Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 \1 e4 [) ?- q; i+ Q# k
set l (l + 1)
) P  a* D4 f2 B]
' c* @3 Z% A% ?* [; h" eend; Y: J) I9 {, H

, G* M" e" w$ k3 r7 G7 Qto update-credibility-list) S' {; K5 R8 L
let i 0
2 f: O5 u/ S- Y6 I, P- fwhile[i < people]
  w1 B, x0 v& {6 ^: J[$ C6 y" }$ {; q. [5 A& M
let j 04 Z) {- S. h" m  D" g# j
let note 00 j" z" ^- q5 Z/ E, A. M9 k
let k 0
, I0 G- N( n& b9 H# j;;
计作出过评价的邻居节点的数目( x! ^8 Q, A9 o$ k' r# t
while[j < people]# L7 W- _7 t" `/ t# A" p
[. }9 Q0 Y2 r" j
if (item j( [credibility] of turtle (i + 1)) != -1)/ o+ W% [& s1 k1 X" F2 _6 d* K
;;
判断是否给本turtle的评价质量做出过评价的节点
5 ?" j9 w) ^1 `0 Y  |5 G[set note (note + item j ([credibility]of turtle (i + 1)))
0 i( o" `- h! s2 u1 ]! J8 J;;*(exp (-(people - 2)))/(people - 2))]

5 J, U  a. e1 N: j0 C, rset k (k + 1)- G& K1 f- o# V
]& d+ q. ?: }; s
set j (j + 1)" |/ B, V' n( J# _) V8 F) n
]5 m' G0 ^, F5 [" j1 z
set note (note *(exp (- (1 / k)))/ k)
3 x% n1 o" ^% ]0 `9 ^7 [7 n( [set credibility-list (replace-item i credibility-list note)
5 b, |& F" z7 j7 T3 q7 v: }set i (i + 1)
- j5 O& x6 L( ^2 O6 l0 d]' W6 B$ K& e& s7 Y8 z- z4 f( F
end$ e2 `  t% B) h3 i3 ?/ R  T. w3 W9 s
  K, I, {& s  u
to update-global-reputation-list4 G- F! \) s1 ~8 d) p
let j 0# ?3 H$ |6 M! e" v. v7 D7 l
while[j < people]+ w) t( w1 E: e: f
[: x+ W) w* C7 x# z# k
let new 0
& J' A" ?0 x; y& D3 g: L;;
暂存新的一个全局声誉
" D, x4 Z# k; [& O5 a" flet i 02 H9 J  K7 G7 N# [: I3 m' R
let sum-money 0
. h. P& v  [; @( ~let credibility-money 0
8 D3 i# @0 O/ [4 Bwhile [i < people]
0 T+ d/ N  ?. Q" z. T- e[
6 n* B! w% G& U* zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- m0 H: o$ z: H4 @8 k2 }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' N+ U9 V$ Q) q5 |  C+ L  ~2 _
set i (i + 1)2 W  e: S4 j3 w0 I1 @+ B
]
% K, U' Y6 m0 V2 J3 ulet k 0
, J7 D0 Y1 {' U: @let new1 09 |" v$ {. s  K# R& ]+ I
while [k < people]
8 E) C' R9 \8 {, T. R[
! ^/ ?! r% s: U1 Wset 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 ~1 _' t! n8 h, [$ H# @, A2 o
set k (k + 1): H7 D6 K6 w) N
]9 b; l# j: H6 W) x% g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, a" B  M; _3 U9 s" C( Vset global-reputation-list (replace-item j global-reputation-list new)% u7 \* ^1 O+ p: e: r, j
set j (j + 1)+ W: G! i& n# @5 x" R7 O- L) ?
]
+ c9 u2 p$ _" A  y' E8 send
2 y8 h% ^/ z8 G9 h2 S6 P0 b$ M& F2 [- L! Z1 K
8 a! @  ^$ N% I6 A6 G9 G
; \6 U0 S& h9 O) S0 u
to get-color
( p0 n! J' ^2 D" D) t& X8 x. R5 h- W/ j- y
set color blue

' w5 f( t8 }- F+ oend
6 O/ E: ?% N, `
* H( W6 E! m3 Fto poll-class+ r7 X( F( o% R2 V
end$ q% o) H' @7 ]9 |0 m; Z
) d4 w( m6 ^( Y, L9 t
to setup-plot1
, c7 j3 G) J7 Q4 U1 v0 w$ p/ k: C' ^8 c$ Z6 U1 K5 X
set-current-plot "Trends-of-Local-reputation"

5 L4 T( z+ C" |
3 ?/ p% v$ t! V4 g. t+ F1 u$ w- Tset-plot-x-range 0 xmax
6 B) O; M. b" F+ i

; }- b5 F2 w* W/ @7 tset-plot-y-range 0.0 ymax
7 h. D; G7 P7 V" j! Q
end' [! r; d. ?! f8 g* I: O, Q

9 f- T7 o! \0 P2 eto setup-plot2
: a& N' L% V  `; [3 f
$ _- Z/ v# u8 ?4 U* n! m  m6 ^set-current-plot "Trends-of-global-reputation"

: H7 q* ]5 l  m: M7 E6 J
7 h, h  H% b$ yset-plot-x-range 0 xmax
8 c: x0 w& y) `' _$ F7 u+ w- J" v
. M0 C9 {# F8 r9 U( c
set-plot-y-range 0.0 ymax

9 o  G/ S- k  r$ U' bend
$ G3 D: x# Q6 v* h+ I
( {  K& D. `, uto setup-plot30 w! o" ]- ]5 y) _. |( {" Q4 i
# S7 v" K- ?' h- V& m+ Y' C
set-current-plot "Trends-of-credibility"

8 d! M5 D9 o, h) B+ f0 F4 R5 ~5 t3 i1 e8 N9 Z
set-plot-x-range 0 xmax
7 M9 h# T" z- y8 R  t3 ]6 w
& m/ C# @+ [/ a! F5 T
set-plot-y-range 0.0 ymax
' e) v5 `) D. D9 t
end
) G) I7 T- W5 F3 _3 d. c! {# n0 \- i# A3 u" ?( w4 [
to do-plots
, \* T0 R1 f1 o( b+ H8 L2 Q. _6 \set-current-plot "Trends-of-Local-reputation"* {( @+ G0 C+ d5 E
set-current-plot-pen "Honest service"
/ Z, i2 A+ s* H: j, M5 ]end
, Q: n1 t, |& e; q
. b$ V7 d' M% E( p$ [/ q& K0 K9 H[ 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.
0 T8 z: S; Q# O# U7 g9 y  `+ S$ c( H. r& M$ W
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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