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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:* p- ^- G( x$ Y( j4 _4 F# U5 C
to do-business
3 U; M# O9 J2 g: E, T rt random 360
$ j! L+ D! O& i; R! I fd 1
! ], ^3 P% a* I4 f0 u# ~ ifelse(other turtles-here != nobody)[! @& v. \* j7 f6 b
   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.% K! Y% h' S1 e3 d" o/ f, q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( d% m. p" F/ @  ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& ~6 ?% P, n8 k9 I+ y   set [trade-record-one-len] of self length [trade-record-one] of self
6 g5 b* x" V: [$ ^1 S" g   set trade-record-current( list (timer) (random money-upper-limit))
6 @& r. }' o' |
/ |2 C/ R4 ^: U5 C' r问题的提示如下:
9 X- [" _9 c( ^$ Z0 N  m: ?
, `5 H0 _8 m8 c% P) f) Eerror while turtle 50 running OF in procedure DO-BUSINESS
, O: Y: X/ W" w, }" d. e  called by procedure GO
' \5 A/ q4 n. ]6 c7 y2 X: b4 ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.' d. h5 }& r/ E# k* X
(halted running of go)
7 k5 n1 h/ x; m+ q# ~  R* T, P' j% y6 l- ]3 ~
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~~
% M9 ?/ H" t2 K- ?& S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+ j( m: x2 [0 J6 L$ U
globals[! D4 U" ]2 P" [3 T% X. p& f
xmax. o8 B- z% o. @$ G7 N& s9 z
ymax) N9 v# x+ i3 ]7 k
global-reputation-list
+ `: h' l1 V3 _) m* o& A+ m7 u
5 f+ c- a! \2 N! _4 T' n# [  m;;
每一个turtle的全局声誉都存在此LIST
2 X( c$ Y, o4 e9 \1 U$ f! f8 Ycredibility-list: _" C  G" [2 P& H% H
;;
每一个turtle的评价可信度
* x; S. ]* x- }honest-service
4 K7 _$ Y: j9 F0 Ounhonest-service( Z" W' R7 Q0 ^' q! N
oscillation) c0 m, |1 q8 K9 k$ x; R" g4 p
rand-dynamic
3 T' t$ t; X. ?$ d, \: d6 P]
2 V' D) n. k) S7 Y0 Q# L- T4 g- ]4 r4 s( D: r8 _
turtles-own[5 P3 S! E& I' t3 Z
trade-record-all3 c6 u/ S; j, Z) ]
;;a list of lists,
trade-record-one组成$ F8 K& p, a* k# p$ O* l* n. Z
trade-record-one
. E+ V5 v& v. @5 z! f- J2 `;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ a: E6 g5 h2 x. E+ \

. y* C7 ~# m# y4 ~$ E;;[
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]]
5 N; Q) [  ~& R8 G, Q& Y5 mtrade-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]- A7 v, J* @$ b) }1 ]0 z4 R
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list5 R; A4 q: ]7 s: p0 l! C
neighbor-total
- Q& T# X. K% V1 l;;
记录该turtle的邻居节点的数目
) k  p1 S+ y( Strade-time) Q, e" K  _5 Z( C# \
;;
当前发生交易的turtle的交易时间+ o# B! D! F' ]( |  U6 d
appraise-give; @; Z: }1 x  M) c6 D  f
;;
当前发生交易时给出的评价
  Z8 S: i/ G% H1 T  U* Y; a/ [8 g1 j" rappraise-receive  c' q, D. i8 m0 X% @* s5 }) I
;;
当前发生交易时收到的评价! T- j( R1 T$ Q" p/ c
appraise-time% y; U0 L1 W5 A% B. r6 V. q# q
;;
当前发生交易时的评价时间" X- {0 w" b* b. w# ?3 _6 r( O
local-reputation-now;;此次交易后相对于对方turtle的局部声誉: |% L# N" {0 b
trade-times-total) m3 ^$ o) q% ]/ W5 l, {* _. ?
;;
与当前turtle的交易总次数  H. \5 H6 i, W+ f! x
trade-money-total
8 i+ M$ s5 O. ~( V0 M: Z;;
与当前turtle的交易总金额
$ I5 {# s8 \" l! M. Clocal-reputation+ U0 t+ m6 X% @# @! G
global-reputation9 M0 S" k, `. C* B0 Z% ^
credibility
4 Y, P3 I/ f7 h2 t7 f1 L1 ~;;
评价可信度,每次交易后都需要更新
$ _0 B! V+ z! R2 g, ycredibility-all; ?# ?! e  ?6 @+ _" K  j
;;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2 e6 \1 V. G7 L% r' Q

$ E- Q& O1 i* ]. m( e;;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
; m) p9 D7 O1 y" Z9 n' u5 [5 B1 v: ycredibility-one
* G7 S! V" r8 t4 j+ ];;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
' k& Y  T: q; c1 y& I$ u' v9 eglobal-proportion
; d  K% C1 F* vcustomer
* [7 x! m0 Z6 e0 c# v0 r7 X3 ~customer-no
; B$ \0 ~  v. P/ s/ B3 ptrust-ok
8 ~, o4 ~! o  [% vtrade-record-one-len;;trade-record-one的长度* x  D, `# F& p! w5 O7 \; c
]. J: G" ^: w3 I" u7 O
; T/ K. d9 {3 M( @( @1 J6 T
;;setup procedure# t/ c- w+ z: D( ?' [! R

6 R/ q* L3 c! R5 g" T1 E0 l2 yto setup
& |5 C5 `1 v+ ~$ _9 K/ @( N( e; C* K) n& A$ \
ca
7 e4 G7 W; T1 I# n7 D5 X1 J

) Y/ N  F- J. Winitialize-settings

5 M# l. ~6 {1 Y+ o
8 v% G9 m. e" J8 Xcrt people [setup-turtles]

& j# F5 X6 L! I6 Z* b1 g: _  T; k% K' H9 c4 S! R  ]
reset-timer

- h! Y$ [+ M% i; O
6 V0 N  L% g2 U7 E. Spoll-class

& \" H' K2 c  W) T1 Q6 p4 h3 w9 h3 K5 X: A! F, U+ w5 o8 E
setup-plots

8 t$ R+ v  v9 G/ \- t. y0 V( K* b
4 `! {0 h: c% Q, {# M( Edo-plots
+ w- o" {! ?8 C* s6 [
end
' F: L2 E# J3 n$ v, h& g; S' P$ B% e% \
to initialize-settings
1 V) r0 h* q" z; D6 ]& C! x- S+ L7 T8 F
set global-reputation-list []
6 @  P) ~. H, \" |/ o

$ {' \2 H# e' _% f2 ?4 Z( Xset credibility-list n-values people [0.5]

0 G) u5 j- A% o
5 o( _4 }5 g  i+ b6 Eset honest-service 0
$ T/ u9 M& {% K
1 V* z4 m/ l/ `7 d. r5 U( j
set unhonest-service 0
3 b2 P1 d0 y+ k* g* {
% x1 Q/ F" O- l; S8 f
set oscillation 0
. O) D8 @" {0 l% a

7 G* s  @( R' i2 e2 t7 m/ mset rand-dynamic 0

+ e+ C0 n0 D. g" x. f' cend, P' ]+ c7 u" @6 ^9 [6 e
% p* {6 j5 j" i' o# S0 q0 D: I' S; B
to setup-turtles
1 _; i/ S. T- Tset shape "person"/ y. F! y3 ]7 k
setxy random-xcor random-ycor5 a: x9 }% g' Q: |% x& _
set trade-record-one []2 m; p0 J0 _# N" {: S

. e3 x) Y# P; l- Vset trade-record-all n-values people [(list (? + 1) 0 0)] 0 ]' A: e' R+ p

0 a# O5 M9 G6 N5 m; Qset trade-record-current []0 w) t' ]+ h1 K$ ^7 g- Z
set credibility-receive []* c% n$ e6 w5 l$ m8 d3 J
set local-reputation 0.5
3 [( f8 o. @% N8 T7 }4 |. Iset neighbor-total 01 _2 E4 V/ L9 B0 p- O# W8 `
set trade-times-total 0
& N+ k" ]1 L$ t1 a# u9 iset trade-money-total 04 V5 c+ k  Y9 M
set customer nobody% o1 N- h& x5 i4 B2 `
set credibility-all n-values people [creat-credibility]
! ?  R& t! {7 ]  E8 a! x8 Q8 Nset credibility n-values people [-1]# S; e/ j; j5 R& \2 v/ @
get-color3 }9 V1 f5 L$ I6 w* |0 b5 m2 A. J

+ t/ L) n8 A  J' j) E/ cend2 m$ r% b6 a0 `' v# S& p3 u0 ?

. h* T$ j% h* C8 j# z- f: ]) O$ xto-report creat-credibility  r  J  O( M: Z8 b! W8 \
report n-values people [0.5]
  w/ [, ~7 D( M0 Q( u0 }4 eend
0 M) q' z3 x: [$ y2 y0 s
4 X4 m5 k- T' r/ A  ?2 Sto setup-plots
  i) X3 }- R/ j
1 S, C* e" T% k+ Qset xmax 30

2 m/ I1 v, m; R4 ?) J
/ N; z# X9 ^5 H' m+ Z$ a; y% K  rset ymax 1.0

+ ^0 N- ~$ o8 Q! J/ r0 w3 y5 l* a5 r7 \
clear-all-plots

* l: _8 q, d& {  n! ?# n/ y. Z$ C0 R: k( Q' K8 B( L
setup-plot1

* n8 X! B  d2 V$ @, f7 B
* ~& M/ |0 T. r1 u' nsetup-plot2

, {- d$ n1 @# X7 {" L. J+ y
+ X; _' n: Z0 f" j# H; ?" D4 @setup-plot3
* F# _* [$ U% n* w( D
end4 |% T1 E# ?" h! c4 x
. a& w# |9 w2 ^& x: _: ^; y
;;run time procedures  |4 _% H6 f' D9 N# F9 s
. s0 {0 L/ u8 O1 `$ Y/ f% c
to go
! n/ E* J0 C% \- o* Q' a
! m1 `  ^% U1 W. `$ qask turtles [do-business]

/ Z# ?6 v! ~9 F# h, t7 p! Send
, Q1 z6 P4 S- B: V+ L, n* `! z( Z) x* n$ W  S( U
to do-business 1 y1 A$ M3 ~- q  y9 b, C+ M$ S. L
; A! G8 k; W8 I1 `

9 z# K$ X; Q8 {* D! S, `4 V( vrt random 360
" q& l$ g: W! f8 ], R; ^6 M& z& \
+ Q# s5 O# t2 m+ c
fd 1
' v+ I1 U1 `) c& _1 l( I, c" V

: {' y8 Z9 E3 l1 p# N1 E- {: wifelse(other turtles-here != nobody)[
: t8 K- v. n' k6 M9 T2 @

4 N: p$ g# J/ Z9 h' l/ D. Iset customer one-of other turtles-here

% T7 ]. k) D! k1 I$ T* M
* F1 n" b- M( m2 J& a! E' K;; set [customer] of customer myself

6 H( s4 O, m" y, w- M/ U/ u1 W: j- ?8 l6 O
set [trade-record-one] of self item (([who] of customer) - 1)
% O9 E0 {3 K2 a[trade-record-all]of self
4 a3 ^! ], f1 X# T) U9 I, s4 ^;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, L0 @( g; c; k0 ^. r- o
, j& L) H7 e8 F7 `
set [trade-record-one] of customer item (([who] of self) - 1)
1 }, }. N2 J8 t8 D1 _, k7 m  ?[trade-record-all]of customer
) W- S( g& Q. h: ?) ]
( O' w/ C' d8 i0 ~. T! S0 C' G; p
set [trade-record-one-len] of self length [trade-record-one] of self

& j3 }* S6 w3 N
9 X9 H" O! W0 p9 I, [% ]9 I8 ]0 wset trade-record-current( list (timer) (random money-upper-limit))

7 ~& ?2 j( f  `1 Q1 {7 J7 f
9 P/ L% g3 B3 \# N4 x  X+ Rask self [do-trust]4 I5 A8 X- t% i! ]
;;
先求ij的信任度/ d0 {' j4 Z. m; |0 X7 j& N

$ W* @/ t) x# Qif ([trust-ok] of self)& ]+ {! s, \* _1 _3 N
;;
根据ij的信任度来决定是否与j进行交易[1 z# n8 W1 n9 m5 K3 s7 `2 R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself! W* ?) I2 l8 @* L! B1 ?6 a

6 X7 y2 k4 w9 Q0 U' u+ ]2 a$ x[
  J4 C0 @" o1 D  f) U/ y  w# t9 x6 O
+ A5 J: g/ z( l3 J
do-trade

7 ]1 @2 l) i2 ^
% p* [$ z) S4 D& A: k  [7 p; Bupdate-credibility-ijl
" _, _1 J) t' m. V+ K) F, q: ^

9 n+ s: t& s3 U4 `' ~1 [update-credibility-list
0 c, J# z9 `. G1 f

4 T' Z, m! Y  R, Z- a7 G% C% m. X. }' G7 `
update-global-reputation-list

! p( C! F- t! m7 {. B" D
3 K' r/ {7 L1 x2 ypoll-class
: }2 L+ n  g+ p1 s) ^( m5 o

: ^, Z' Z/ [  s0 X7 Y9 l& Fget-color
8 F+ E& w" x( Z+ r4 ]

: x6 h! ^8 l3 f8 j4 Y7 S6 k* f]]
6 f: g. ^# m! F: `* @5 V2 w
0 {6 V) j7 D  M' N# ?$ q& B% U' ]3 s;;
如果所得的信任度满足条件,则进行交易
; ]& v3 I4 w5 f
$ ^) d5 J! Z' t3 s3 O5 x[
$ ~. L+ O$ y' S2 o
  Q; r! W6 W( P! k, F5 ~* |
rt random 360
$ F" L$ n  G- a6 g
) U' a( p+ d) [5 ?8 l* K
fd 1

! B, g! i5 w- r3 Q! N8 v- B6 }) h6 k" l2 ]& w7 }0 N& X1 E
]

. k; t1 t. Z9 x+ M& l& e
- w% l0 a9 X3 [8 ]- W7 L; d' tend

4 }+ e6 J7 {" F5 r# V
) [  V3 G" s1 n7 Y4 @, ~to do-trust
8 I7 k1 n% s7 N' Cset trust-ok False) h9 S) L3 O2 a

. B; i8 \3 I+ J5 f# T: y

# p* K. i3 G3 S0 R! z4 ?+ o3 j2 L7 Slet max-trade-times 0+ T; l1 S- G/ t- h# c7 x
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 m0 v' p/ ~' }( Ilet max-trade-money 0
+ ?# v( T7 X; x- ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% A' k- e- ^' h* D( S3 p' ]
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
5 u  [3 I# L! i8 e$ \1 T
; Z! B$ w* K: N& W

6 E. n) Q! P9 a+ e1 Z; Q2 Aget-global-proportion
) Y9 {& N8 T* i# d) i! n' Olet trust-value
+ h# T0 z1 ]# u* K, D7 m0 Plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' E. U/ Z4 P; X' |
if(trust-value > trade-trust-value)
* `+ B( c5 g- ?& K( w' W0 @[set trust-ok true]1 N6 P7 a' m  O0 j- G
end9 I  b5 w5 v% w8 N) S

8 @& L8 Z5 }2 C. o" S1 i- zto get-global-proportion6 b% o6 ?7 \2 s+ p
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' _2 N; s5 R  ~[set global-proportion 0]
4 V# V/ l2 Z( V- i) Z$ n/ e[let i 0
, H3 j- ^; E* j- }  H$ z/ F( c* B4 ilet sum-money 0% @( d2 M0 c% m- D
while[ i < people]1 D. F2 D# U( k* x- w8 w, j
[
5 X; ^( H3 j0 o5 _) Jif( length (item i5 r9 E/ G! u+ m/ K& d. o6 @8 Q
[trade-record-all] of customer) > 3 )

2 \/ T3 N$ w5 F$ t[. q( C7 x( T& i; T
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  F* H% O8 I8 Z% B8 Y" Q. S7 W
]( k! {" I4 p& P, E+ X3 U8 a
]  e8 O7 j! v1 U
let j 0
+ n5 ^/ u- N7 g% X. \' ilet note 06 l2 ^) |8 S, ]2 T' ?6 m
while[ j < people]
3 e8 m( g4 d4 N4 e( a[
% q/ }) Z0 {/ \. ]8 P4 V* N3 e/ Rif( length (item i
" ~# S$ f; e# T  {: f[trade-record-all] of customer) > 3 )
3 c; d' M  R" t( ^$ C" K# l: L
[
2 u% V/ ]3 L$ sifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! Y) j+ y; A- ]/ 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)]5 v5 X. e: h% U4 T, A) X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 O% G0 }; v4 G3 b- e
]! {! J0 p8 k% ~' I4 u& ~- \
]3 m5 a0 ?( O3 R
set global-proportion note' E) D5 ~: @* g, V' @( K$ f
]5 c5 u6 A% Y( \, D+ Q4 j
end# L3 T+ v. @/ S8 b; g' x1 w

* w: e& ~/ \* K, zto do-trade9 Y1 w6 A& m) N+ n2 q- g- p* @; V
;;
这个过程实际上是给双方作出评价的过程  l+ U7 X% ?/ P4 E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 |0 K  p1 q% x. y* m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价# N3 j* b" L) s% t4 D
set trade-record-current lput(timer) trade-record-current
5 B$ Y5 B( H; ^1 [$ `;;
评价时间
/ H0 D/ N* D; b) L, o) bask myself [
3 d# U3 W3 [. g) H( m7 ]$ G7 vupdate-local-reputation6 S9 ^3 B  B+ I3 c1 W
set trade-record-current lput([local-reputation] of myself) trade-record-current
. g$ k( c4 D, F5 n/ H6 M]
8 b, j6 B: v/ X) |# `set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' f/ z5 x" J( u! G0 m;;
将此次交易的记录加入到trade-record-one* s3 Z. u! ~5 E6 P
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( R6 a1 p/ d9 k, y' j% I5 s
let note (item 2 trade-record-current )
$ C) j  o, m) B* x6 r& Cset trade-record-current
: M0 p% T) z; c4 _, }' G( m0 d" U(replace-item 2 trade-record-current (item 3 trade-record-current))
$ K" x" I/ }/ y2 S4 k
set trade-record-current
0 m1 _8 E# l; C+ ?(replace-item 3 trade-record-current note)
) R( ?" k4 c# G0 x4 s% |  k& w' m: @3 R0 O% t1 ^* U, H

& W$ y  d! l4 v% L/ qask customer [6 o9 h: S1 L# I1 Z! c3 Y: t2 y5 \
update-local-reputation
- h: w5 Y0 v: P6 u5 ~  Gset trade-record-current
4 p& g! S& p/ \1 f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( j  f# a% R' g0 v
]
( z5 a" u! y2 f% s9 X" z, K' u' O- C+ a
# h1 ?7 Q: ]+ W& N& G! u/ t! m
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% [3 }7 i, L$ k6 ~; i7 r
2 V3 z9 f6 x  k. O( M2 r
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% B: Z% \( `* F;;
将此次交易的记录加入到customertrade-record-all8 f- A# R& ]4 l  m: {* }
end
7 R1 X4 U" r: |, a
$ }- p- T) `8 e4 ?) xto update-local-reputation# u6 `# y0 w  m  P
set [trade-record-one-len] of myself length [trade-record-one] of myself$ A6 ]& d6 w- y6 C7 y

$ O0 a4 v8 y6 E8 \* ?) [) v5 A- i! B; W4 A; B
;;if [trade-record-one-len] of myself > 3

7 f( d/ K1 X8 L0 }  gupdate-neighbor-total2 T' Q# w% t# T' D) L+ }8 x
;;
更新邻居节点的数目,在此进行
% E) W4 V* t* Mlet i 3
) n0 }7 {: q& S' o5 M( E9 olet sum-time 02 T9 B9 m0 j! l+ Q& e0 m. z3 ]; {" ^
while[i < [trade-record-one-len] of myself]( ?' L+ [3 g' w6 Y
[
! B4 P  e7 @4 g8 P7 kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" K, K% G0 G( G$ iset i
  }0 Q6 s1 x% s; l( i + 1)
* \, v: T& u6 ^* Y) E( P
]* d* f# a. P5 q9 {* S
let j 3
: y7 u! }8 J8 j2 v2 K# _# W. clet sum-money 0" [/ e- ]* }" Z5 \& |& z
while[j < [trade-record-one-len] of myself]; S7 s& F9 C0 ^( S: P8 _7 V; u
[, a$ u2 N9 ~) c0 _
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)3 h; ?! T$ S7 p( v7 `8 h2 q
set j
2 \: ]0 @1 g. p+ y$ e$ B" i( j + 1)

+ A6 D* S% S% L) j. j]
$ ^0 S( f! j: ?0 Jlet k 3
" j8 \+ K  W' s) g' Zlet power 03 D1 S) ?" g- \0 b3 M
let local 07 p; C$ b# x. ?- @
while [k <[trade-record-one-len] of myself]
& @8 p% h: n7 c* c( ][' w6 t5 b! E1 d% W6 J
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)
" m! v+ D% J7 V9 B' _  O8 uset k (k + 1)
- Y- o, u- c1 ^]
( M. s+ b0 ]( i1 Q; p- Fset [local-reputation] of myself (local)+ N/ n* {; n. z# G8 ?9 P) C
end
% Z( f9 x, G9 ], M; C$ T
  `% \% h; M0 k! [, Tto update-neighbor-total
' _/ ^2 e" B* j% n5 E
* M2 v) {$ T' R, d' p: v. tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- ]- N5 ~  f8 G# h7 V( b' \' L  B( f5 @1 n+ M: `$ R6 W

& u1 T/ L8 E) ]' K& n* ?0 Aend
5 E& e9 k) y" h5 f; |
% `" X- F. i  s& D) q- ~to update-credibility-ijl
) j, Z5 i$ L1 `: p1 u! y' x
+ F: l2 V; I6 Q! V;;
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。
* n" L. ?, n$ ?1 |; mlet l 0( q3 [! ]$ V% k9 u; V2 Z7 j9 {
while[ l < people ]
! R' x% I' \7 F3 t! I% C4 N/ Y;;
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
- b; J/ [: O; j( W[+ |+ E( K; K6 M6 _$ B+ k/ K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" G" I" I2 N5 N8 d% y6 {0 B# c' {if (trade-record-one-j-l-len > 3)7 P* w" v$ x0 a, H& S6 T
[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
5 S1 n3 E7 M/ a2 F* V. a$ [2 D+ blet i 3
9 x: c/ r% Q/ L* R7 x$ tlet sum-time 0
; B0 h, h0 r: t/ y/ j" n6 K$ j* E6 Hwhile[i < trade-record-one-len]1 {' d5 G/ d' D  _+ p
[
6 ^7 ~- H) H/ }8 L* `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- B" F2 b0 v7 {2 |6 Bset i
" P+ j, Y. H# j" f! N( i + 1)

4 x' V& W! H) u" u; U4 S]! M) i; y0 t: f5 l1 r
let credibility-i-j-l 0( O* l- D- C/ v. Y! C7 S8 g
;;i
评价(jjl的评价)
4 q( F" K5 R; \4 K, \let j 3
" M" J$ [9 U. h, p0 Ulet k 4
) R# E& _" K, @+ _% uwhile[j < trade-record-one-len]1 D# h3 S' n% n( [9 y0 C! U
[. q* G8 t* L; y3 I4 f. U# u$ x" M
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  r1 Z) D: D. O0 {/ {* L
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)
3 N$ L2 s1 ]2 Y2 d$ \set j
1 k! p& i) F. s* F" y7 m+ Y( j + 1)

* p; c. D+ I3 S, R/ \]
: t1 r# H; }1 ?4 E  E3 lset [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 ))
/ ?% a! F" O1 T( ?% K. ~. g' R/ w2 _- J$ o+ [. e% d

* d# \, p) [6 N4 _5 ~0 E; g8 \/ {+ @2 Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, h. k; }1 X1 V; f' Z;;
及时更新il的评价质量的评价
! x6 o- N+ ~- C# qset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 {) t! S$ H/ p
set l (l + 1)
0 J  X, O6 O5 Q. y4 j- x/ E]' Q" y$ G; o, V! H6 I, L# z2 i
end
/ ^, M# O: i- f' M) \1 X
' ]- [! X" @% E3 @* E' G% z4 F' i: Xto update-credibility-list8 g1 K# l( T4 v2 F0 w# e
let i 0: K& c$ F9 ]; E
while[i < people]2 B* u+ |; p, z
[9 ]7 `) A6 G; m$ T- g" S8 t0 K
let j 0
6 E" X  t0 y) z! g: d/ i7 ulet note 0: e$ o' s7 X2 q" h6 ~9 l. f
let k 0
+ \' g+ N  [+ H7 D) B;;
计作出过评价的邻居节点的数目
0 A3 d1 f3 ^8 Z$ U, Lwhile[j < people]
+ o5 w, e% L. m/ {' N8 I3 K4 ][
: M* k; R2 W. B# g0 |  _if (item j( [credibility] of turtle (i + 1)) != -1)
1 `! p& i* U: Q! h  W;;
判断是否给本turtle的评价质量做出过评价的节点
# N. G' ]4 b' O: L[set note (note + item j ([credibility]of turtle (i + 1)))8 n  _/ p$ l% v) S* L) k9 f
;;*(exp (-(people - 2)))/(people - 2))]

1 a  ~/ B" o9 W+ w" O! }! ?1 Gset k (k + 1)
: G& C7 A# i; {5 x0 j* _% c]3 e1 r5 E. |( t9 G. ]+ ~- U
set j (j + 1)( {/ j* V4 f5 v6 c
]- W. u- F. s! E3 H
set note (note *(exp (- (1 / k)))/ k)
8 w$ D6 Q, X9 i/ \9 xset credibility-list (replace-item i credibility-list note)
+ U! E( k' e" }$ ~0 j5 L& H3 Eset i (i + 1)
( \2 A' Y0 U- A+ x3 A$ E' {]
; m$ u  U9 E3 c/ \2 Eend" ~) B( d0 w8 X: d; b  Q
/ Y& G8 M# R) r- s8 t
to update-global-reputation-list
1 D5 V6 l9 D. V- T5 jlet j 05 c# E$ C  K0 L: z2 d/ b, b
while[j < people]' g: M) Q+ J, Q! n
[
* u+ G' |2 t* [  X' Y$ olet new 0
2 J1 u) T2 e; O2 L  ~* A" u/ z, s8 g- |;;
暂存新的一个全局声誉
) d3 `+ I; C8 S6 ~let i 0
6 ?, K; |- j/ N9 Y- Rlet sum-money 0
7 L3 E1 o; }) S1 ilet credibility-money 0+ e) \& a8 o/ H2 c) m2 V6 }
while [i < people]
1 S& k! y8 @) q1 a[: n  b4 W, E' v! F; Y- |1 O/ u: Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- Z6 p7 H6 E& S6 a# J- @' r& i  Vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  g# K  b" Q! k1 Z2 c4 x
set i (i + 1)
3 [: z: L1 N, j]0 s( H" q; ]" Z; P0 r
let k 0% [! C- h" t2 D; ?: J1 T+ W
let new1 0
! I7 V' Z1 i. m. n5 Dwhile [k < people]2 @/ K/ ?3 F$ H$ B7 U9 j4 I+ R
[( E) K! I. B( T5 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 r+ S8 O3 {7 Q& ]' Zset k (k + 1)
% U; ]$ D  l* Z! W, N- d]
1 S2 l4 M7 y  u6 U5 Yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : {' k' A9 z# }9 Q0 k6 Z2 y
set global-reputation-list (replace-item j global-reputation-list new)
. {% \, A( ]5 f. w( S2 F: dset j (j + 1)
  q# P. q0 S/ [  K) I2 V% b" `]2 _- E3 C1 N# `' C$ Y5 O4 g
end8 W3 P$ n" ?4 w$ ]4 v

. k+ T: N) E/ Q6 K
4 `# o( |* U+ o, R7 |2 r3 m+ p# N# k; ^7 n3 _0 {
to get-color
0 h! g9 W: Y1 b& O% t( k  N
  Y( Y$ M. b+ \% Eset color blue

8 R4 J) d2 S; X9 l6 V% Uend; T) x* c% ]  ^& i6 `$ R3 B: K

( c4 {* k0 S' yto poll-class
- E1 U, t8 J( u  ?+ Z( r/ Aend: F& ]7 |" B) x) X% J7 h+ t) E

! L) P9 J& a/ a4 \+ x" Dto setup-plot1
% o1 ^+ K7 n/ B; v/ X! X5 g$ p# x
set-current-plot "Trends-of-Local-reputation"
: T5 {+ q. U1 x! v0 M+ ]/ J: u+ R
3 R" [' C9 P( o0 r- B
set-plot-x-range 0 xmax

' M- n5 U, P/ B' [- }7 b' i0 O' w
set-plot-y-range 0.0 ymax

! q0 C4 T" a) \/ S! Iend' C, [2 @/ v3 }2 c
! [4 E$ ]5 N; G0 j, @4 p+ g
to setup-plot2
, x% i* K( x5 \) y& w$ H
6 A& R* y: h% H5 \set-current-plot "Trends-of-global-reputation"
' M  E+ Y7 f" ?
, K. H, I6 m8 |
set-plot-x-range 0 xmax

% b$ h% H0 b0 }6 E
0 f& P! D5 r) ?5 [" kset-plot-y-range 0.0 ymax

# N+ n$ o8 `! fend/ V% {' ~. ]$ D( n, \9 n$ e
! R. {! V) u2 f( H6 D
to setup-plot3
* }9 |. J, h1 J- q# F4 _
  p( M* U; j  A9 q+ E8 W6 H% \& k' ^set-current-plot "Trends-of-credibility"
( y4 `2 Y' [3 {3 X5 N+ {1 d% p+ ^/ N
; ?% t& `8 w' \: p& E- E* j
set-plot-x-range 0 xmax
+ l2 k- [6 X+ ^

+ P* T" \) G7 z7 m0 _! z  c5 O& I4 e: bset-plot-y-range 0.0 ymax
6 L2 \) y' n# e, d
end. o: j5 ^' U" [: `

7 ^: d& E# P" x5 z# Pto do-plots2 }# H+ |7 _1 o% Y
set-current-plot "Trends-of-Local-reputation"- l# I# _; J- }
set-current-plot-pen "Honest service"
! H0 K" {* y* Z, e3 n! v% A2 gend! ?- [0 x/ ^) N& T
6 ~- `5 K$ L% s# d3 y, M6 d( Q
[ 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.
/ k8 R8 X, D' K" i& x; e8 d% ~# X( S$ I4 I& U. m2 x
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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