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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:5 C& i- c& _  R: Z  U5 Y( a
to do-business
) A0 _/ Y7 z0 m* Z& H  b0 | rt random 3605 _; h, N. W3 L2 x0 }) J7 Q2 Y+ Y
fd 1% F" r# k/ r3 k" g4 v
ifelse(other turtles-here != nobody)[( L9 x; H4 Y/ r6 ]. g. S1 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.6 V$ S7 U/ v! r( d& N$ q
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    6 l+ v- O" b3 n: G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ e& c- n& M. M  O+ D   set [trade-record-one-len] of self length [trade-record-one] of self$ b( k9 m  l- ~
   set trade-record-current( list (timer) (random money-upper-limit))
: q9 I8 Z5 l/ @0 ]5 t% y9 Z" `
问题的提示如下:
0 R+ i: I) I$ N% J* {" x5 E& ]5 O; ]! \* w
error while turtle 50 running OF in procedure DO-BUSINESS
/ `+ G5 E" c( r. L  called by procedure GO
+ b" X: h0 O1 c! C& d5 w$ |OF expected input to be a turtle agentset or turtle but got NOBODY instead.
: g/ u5 o+ d! k7 Y6 Z0 x6 h" a
(halted running of go)7 c* N+ w& f6 X5 U! ^! O

/ o* ^) _+ p/ v+ C# i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~~* @2 E' i$ ~: r4 A6 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
6 r" D0 g. f# P" J4 ^globals[
8 N1 Z9 X. e9 q! a6 x' d* gxmax6 z; o* j+ T2 A& j' @
ymax( G' F5 v9 Z$ u/ X$ @* O$ k. ]
global-reputation-list& K7 r1 |/ ^# d( F
8 L, q9 e& [' Y$ r" k9 x
;;
每一个turtle的全局声誉都存在此LIST
1 |- a+ k2 i) Ycredibility-list8 r1 |$ o7 }$ Q* G* P
;;
每一个turtle的评价可信度9 R, y; l- x- W% O4 s" i
honest-service  D( }0 s; ~* g" R, W
unhonest-service+ p7 j  g7 S" B/ k
oscillation
' x6 o4 y' k( ?3 p4 Zrand-dynamic
9 K0 P% V8 w0 k: b) I6 T& O]. U8 g  _+ i3 A- t! b+ `8 }1 |! h2 G
1 S. [5 P/ P1 ]+ @5 Y
turtles-own[
& t0 Y: E- k7 `; w7 Ftrade-record-all
- _) ~( Z2 e& n+ A- E$ N;;a list of lists,
trade-record-one组成( H: \7 P8 `( ]+ P* S
trade-record-one6 Z7 F/ x" g7 R0 e/ p& n; W
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 a, x$ N$ B) D- F. ?2 K

& R0 k% r5 U' [8 E: y, o  A( _;;[
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]]4 b/ _; b' \3 U) z. E
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]$ h$ ]. A  ]' R8 J$ m( E
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
2 B8 U1 R: c5 P6 s9 Oneighbor-total
. z- R- K. U* N; f8 ?;;
记录该turtle的邻居节点的数目. d0 v( z" m5 b/ b; W  r9 c
trade-time% V8 h+ S/ x% i9 }: h6 n
;;
当前发生交易的turtle的交易时间
# B% Y$ D: |4 I4 E# p5 Aappraise-give4 `5 X( \( }* l+ o" Y. v
;;
当前发生交易时给出的评价
4 h+ a. I! N; _appraise-receive
0 ]. c, ?) x7 K;;
当前发生交易时收到的评价2 Y. x7 y* f+ }4 n
appraise-time, r- I5 O+ e% ^" L+ }' S
;;
当前发生交易时的评价时间2 ~& b' d6 M" j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ b: u9 N; |* \6 Y  i2 v! [7 S4 w
trade-times-total
/ s) L+ m; N7 ]% q) l% d;;
与当前turtle的交易总次数
8 H. e% O4 O) k- P2 Ztrade-money-total5 A0 ^& F9 `) _& J
;;
与当前turtle的交易总金额
& S% i% n. i% Q2 D% ^local-reputation! Z3 L! D  Q" }" n& r5 ?
global-reputation
. @1 i7 `; B- Y. _" Z# jcredibility
9 B# W8 m4 X+ J9 \; Y;;
评价可信度,每次交易后都需要更新4 S% ^  H! ^4 k- z2 a
credibility-all
8 O0 `9 S8 U9 O: r9 f;;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9 Z! n7 U4 I- O6 c6 K$ Q

( j: T7 S: j+ U  O2 q' O;;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 {7 Z2 _  M5 z3 xcredibility-one
0 s$ J9 X, q5 q, b- W;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people0 S$ Q! |' T) t; c
global-proportion
5 ~0 L$ x0 o2 B7 acustomer/ K1 ?: B$ I, o
customer-no0 o4 j; H( c8 |4 t( `1 r! r8 H8 @
trust-ok& b$ Y4 b5 Y9 S% k7 P( \2 u
trade-record-one-len;;trade-record-one的长度
1 E( G% \4 N& [  Q7 ]]
& l1 p3 k* B6 P: F) C' D8 t; a+ a+ Z  I8 V
;;setup procedure( q5 M/ y' ]) P# x
1 _' P# s9 u6 u* K
to setup
: h8 M/ o# R0 `8 k1 c8 X. e8 M
$ ?* E/ q, _% n0 P; lca
* F/ K+ C4 T, q3 T, ]) u# @
$ N& B( j  |: o
initialize-settings
( u; u/ @! a+ \0 N: e
- h6 I3 j# Y2 E* t" r' q
crt people [setup-turtles]

( m, }+ H* ]' n5 r- w( C9 |" V% {" F1 r1 W- G- ^  {8 k
reset-timer
4 x+ ^+ Y2 r( y: }' o- K

& P3 W7 G7 A( ?  M1 Ppoll-class

1 {* h, w9 G" X8 R  v1 V! s% o1 M$ W: E
setup-plots

% O* p  N; [& o9 I5 X( D  ?2 C: y' H- R, j; P
do-plots
9 U. t3 c9 H, T0 N7 F7 h
end" z# c' U6 j9 L; D2 Q+ a2 E
5 _0 X9 u# I+ g% F. g/ x/ U
to initialize-settings5 r6 A: F. t& K+ e7 e+ q% A2 S7 S
  }5 {; g2 X/ f* M/ e7 H1 T8 C
set global-reputation-list []
8 h6 ?7 ]  Z. L  t

6 A/ G, f& _7 q" d, Jset credibility-list n-values people [0.5]

. e# r6 Y. C$ Y) N/ I, S
# m/ J+ P, s7 D. Y7 I+ B1 c4 }4 `set honest-service 0
' O5 u$ p, G+ P; a, a: y; K

7 j7 x& ^- i8 F* D2 W" zset unhonest-service 0

0 c6 i1 c- d- d) [! W1 v& Q# Z1 C3 n, j7 S2 e5 b
set oscillation 0
/ g  L! E* G- q" M* T& h- |2 |" Z
' U1 k4 m8 ~( V" Z. c% r
set rand-dynamic 0

: }0 U5 W/ ]$ Y  C6 cend
& z9 E8 l# N1 v9 I: |' @4 \
6 e0 \( _) p% `  y) r9 H4 N! [2 Lto setup-turtles
0 A' x& j. m, M4 wset shape "person"
9 h& J+ i$ p8 `, d* C. Vsetxy random-xcor random-ycor0 ~. u! _& E4 u2 B. F, y* n: M
set trade-record-one []
) L9 o8 X6 P4 n# y$ e: X, x
  F7 [) Z: s0 i: l" m) l) f- S  ]
set trade-record-all n-values people [(list (? + 1) 0 0)] / ~' l8 a3 ]; H9 T0 i# [

: r: u  t4 ~* Oset trade-record-current []7 u/ |! |* I$ h; k8 \) O+ o
set credibility-receive []
5 d  w9 r) ~$ `" \7 {' C5 _" Y) Tset local-reputation 0.5
2 e- v; I. c: Hset neighbor-total 0* j5 n: K9 E7 B  T& m, n
set trade-times-total 0
  |! U* G2 ]' }( g# vset trade-money-total 0
9 }: l+ }2 G# rset customer nobody* c" t) I( j+ ?
set credibility-all n-values people [creat-credibility]) ~) p4 V! I8 L2 x
set credibility n-values people [-1]
: O1 F% N, j/ U: g" R7 Uget-color
8 X4 ?  p/ W2 b$ f" w( t$ K
: K, }, M- O7 C! L, M: i4 \9 W+ l
end
: {5 W% c/ M; D5 ~9 u, J: s. {5 O) `4 N, }: H: ^; k
to-report creat-credibility
0 R6 n7 o" N" S+ a% ~, preport n-values people [0.5]* f+ K! I- C1 U+ _" K4 ]/ b' c. g
end' Y  }7 L! D. _, P6 x! n7 a( N
1 {0 Q) m4 S0 M7 K
to setup-plots
8 J' F" _8 j/ V5 n9 T. D1 B8 C! z4 Q7 M6 g; r6 ^( P# w
set xmax 30
: g9 h6 ~4 y0 P7 T" e0 S9 d* G% S

8 \' Z  I0 }8 L" [0 o- E) i" cset ymax 1.0

* z% l0 \0 P  ]) `3 y. {  V+ m% n$ t% ?" E7 b
clear-all-plots

8 r: T! P6 P$ T# X1 h; l+ d% W9 |3 y0 Q$ ]6 v, K5 F* n; K
setup-plot1
) L4 u8 B' D+ J0 B' Z. N8 x1 t; F
  ^2 ]# c. S8 G7 e. K6 f
setup-plot2

! i- g7 J, H( I5 S1 m$ E
4 n" _' _1 u' i8 G' H5 b4 E1 a- b, hsetup-plot3

3 B; _8 C+ Q1 I5 T4 k. aend
  S" V  F5 _5 [3 _7 _  }# w, c2 l6 {" c, ?2 i$ }; B% {, E
;;run time procedures
9 a6 [* \9 F- `+ ?; x+ c7 x# i( z
6 O, e, L, _) U/ }) Cto go
& _' v" D: _+ u+ [0 U, I6 F3 S0 E8 A- T
ask turtles [do-business]
# _- Y* R" G1 R
end
6 n. U/ A0 d6 A  a; B$ g) R; g  E8 p. o9 n
to do-business 7 p# Y. B' O7 C# v+ P

% j& _# w2 T) t$ W
6 D$ f& j- w7 |: F8 j/ @rt random 360
! k8 Y8 @7 d$ X6 n- ]/ o

2 [. V/ a  \9 l, vfd 1
  T0 `& L8 n1 o1 V4 D
" J- V4 q  `9 T/ \7 t3 O
ifelse(other turtles-here != nobody)[

$ g3 ?8 X$ S( a4 ?: D3 i7 m8 D- ]; {) R$ O  f6 \/ Y5 Y) l0 U' B+ R& u
set customer one-of other turtles-here
8 |; n3 ^# N( G

' d; v3 H# A5 [5 e# I1 G+ g;; set [customer] of customer myself

( Q* e8 }- c' a
: U& q5 v$ w( dset [trade-record-one] of self item (([who] of customer) - 1)7 l+ N, r' n8 z6 H9 x
[trade-record-all]of self
+ n- U+ L$ f% H;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 J3 r& X3 h# z+ s# Z
: a2 k  L" W. F+ c5 b7 }) jset [trade-record-one] of customer item (([who] of self) - 1), c* `2 W  k: ]/ H$ c8 G
[trade-record-all]of customer
3 o1 d5 T! r7 Q1 c6 o
4 Y, d% U, t. E/ c8 r
set [trade-record-one-len] of self length [trade-record-one] of self

& P& P) q4 H, P0 z( I6 v3 h. ]9 |% y7 x6 T$ }! a5 P
set trade-record-current( list (timer) (random money-upper-limit))

, J% L9 b& Z* n7 o' M# @
8 \( x( x$ V2 w2 h) |# Wask self [do-trust]
/ n% F/ y8 W/ O, U;;
先求ij的信任度
, w# [% c& m+ m1 {' T' u( t2 P; M6 X+ Z5 I9 X  k1 U; Y# ^' h+ U: ]$ @
if ([trust-ok] of self)# |- [+ i8 {" T, W& Q# c+ r
;;
根据ij的信任度来决定是否与j进行交易[" d& d  D$ ?! k. S7 M
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 j9 Q! Q5 {' B2 b9 l: E! x- H* f) |* N1 s7 U9 G
[
/ v5 b' F2 g- f7 f/ ?- K; H' s
; J3 |& c/ t! m- @2 J- J/ h
do-trade
: y$ U( `& F( M& W

5 B9 r3 O7 B- ]5 u6 {2 uupdate-credibility-ijl

8 O5 m- M4 k8 ^0 t+ h% s/ O$ C) N, M1 d- ?: e, N& i8 ]
update-credibility-list
8 d) p4 c! @- d& c
3 g- T) y/ U' @3 b+ i( N

- T8 o7 `7 {; [0 ?. \update-global-reputation-list
- u# s6 `, J; R

9 q0 L# P- S' |poll-class

' F1 J' C5 z" |. M5 y) E
/ M$ _8 {1 j) M, ?2 uget-color
6 G5 I' y/ n/ P$ E
1 h+ x  @. s8 V  l9 p! r
]]
9 ?$ v" s. P3 _0 s& d( O
& r4 R, {( @2 N2 a) W; Y6 @% q;;
如果所得的信任度满足条件,则进行交易
$ Y+ z7 o" X. H- V7 j
+ Z* N+ Y5 \# L3 ~$ |$ }/ }' F) o[
1 ^+ z  I: c% m% n
( k  R+ I# y8 L  g$ ]
rt random 360
/ W, G7 H  _0 t* O2 [& ^

  H" P7 C7 B; ?! o; Wfd 1
. f' G5 [! Z: ]

- x1 r3 J7 _+ a) N9 a]

$ C- s0 [+ Z! u1 I: u- y7 g% H( M) y  i& Q# x
end

* d+ e8 s3 h1 M+ d! S9 G- B
+ q' ]8 K4 u, n' \3 i2 v! Zto do-trust / F* B0 q9 W6 H% S# T  X) |; H6 W
set trust-ok False3 c6 G( p' H+ e
) X& N. O5 {; F- @# x5 w3 @
+ d6 ^3 j, h+ V7 K# w' Y
let max-trade-times 02 c, H- P& f5 m" U
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]/ v; C) f9 v( p  V6 n
let max-trade-money 0
* _, t* B* a, ]% L# d2 o1 z" Sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  C$ U% p  ~: D$ tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). D1 ?" t9 a$ m$ T0 h4 M& ?
8 v3 P$ L+ m* ^! W+ I+ d7 A  ?- b8 e* h
4 ~/ T5 S. U0 g' u6 @
get-global-proportion8 ~! |4 J) G5 N+ e- b, K
let trust-value
% _$ T- ]& S4 d/ ^7 U5 O) ]; ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

  @' X+ V) O/ S, G+ Zif(trust-value > trade-trust-value)
! V" y# V+ v% Q$ p/ H[set trust-ok true]
$ x" Z" l/ N% Y1 T0 `end
2 i! `/ j, D/ J$ K* v! V8 `% a+ H* r7 b
to get-global-proportion
0 H1 J) ~7 {  l# k2 _( U9 H# qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)# t- f9 W! l+ ?  O( I; P2 L1 c4 _
[set global-proportion 0]: a0 \4 E+ {7 ^+ c; t. v" Q
[let i 0- c. K3 b; _/ G/ t) i
let sum-money 0. ?' z0 r. ]/ D! x
while[ i < people]6 Z* ^6 l, Z2 s+ A
[; h9 I8 F0 ?  S* d: K" D1 n
if( length (item i
$ @2 I$ l! N! Y" r' o2 X$ n[trade-record-all] of customer) > 3 )
7 \+ o0 \* V7 m$ }4 V
[5 m9 y6 e8 p3 B) p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( o8 H" T2 o, O# ~* |( j]& y! a1 `& @" P! U2 E
]
1 J/ B5 C/ O" e# flet j 0  K% ]4 f# u. y. @$ Q
let note 0
# G, o+ A; L, bwhile[ j < people]3 r8 A/ @  Q: P) W3 r" F# v
[
4 A9 B( \3 c" P9 Wif( length (item i* Q- ^1 s- L  }( D0 k* _
[trade-record-all] of customer) > 3 )

6 @. e# e% l0 g0 @[
' w% C. ^. X3 Q! q4 X8 Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 D8 R, N5 n$ N; @
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 ], z& M+ ?3 J8 N[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% }: _7 M5 C, j: {' H& K6 ~]! ]% L* ]0 n5 e
]
8 s% p0 [9 y' s& Sset global-proportion note
  M  d: x4 B0 v4 T]. U6 }. h" M3 }! Y
end
2 ?* p- S! V7 E4 G0 a4 S8 I* D2 Q( }; v) m2 t9 I: j, _
to do-trade
# f" m0 q3 M9 z; Z: E;;
这个过程实际上是给双方作出评价的过程6 p1 h0 A4 q& t) I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 i/ f: b! D( d4 }5 c; o9 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
+ G$ q& A7 ?4 m* kset trade-record-current lput(timer) trade-record-current
& I2 Y) W" J+ w5 x;;
评价时间
) c- H7 l& ~% Q: v& Y8 n0 V1 A" Aask myself [
4 d9 y' N2 z6 S" Eupdate-local-reputation7 ]  p+ Q, P: O% J  @
set trade-record-current lput([local-reputation] of myself) trade-record-current% e& w" r# f1 K. ?' R
]
8 w4 Z) g/ h. Zset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" g& }9 Z$ Q) q( [8 j) L3 y
;;
将此次交易的记录加入到trade-record-one
$ p& P: e! D- M" Q! Z5 c3 u% m3 {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 G- V. o: B+ |" N& x2 _6 b- j
let note (item 2 trade-record-current )( w* j  g1 J- x+ Q
set trade-record-current- j6 j% x2 _; ~! ~4 o4 W
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ ~' ^: u8 W+ ~; }5 P, J5 x
set trade-record-current
) H( a1 ?* q7 F(replace-item 3 trade-record-current note)
1 B, p7 R8 ]# {! ^7 p
" L  S% l2 f5 y2 A/ w5 p0 f; r# E) J

' c; |( C+ v2 d" V. E5 S5 Aask customer [
% D8 J1 T4 M4 w0 e9 m% cupdate-local-reputation$ P3 a- Z8 A7 M  L: o9 x) r/ N
set trade-record-current
% z. W' e5 p4 h( o5 S* e(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 {& f# z+ g! C
]8 W" `2 t, \& I+ S4 R* r2 N

, H5 t% a& v. ^6 {/ h* G  j7 A: r
" |  k6 z" ]& `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" Q& l! [' T; H4 G( g% ~: ?
/ K' V# Z! R5 |
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- @; ^: D0 a- z( n+ \;;
将此次交易的记录加入到customertrade-record-all
5 ]0 E4 A, R) J. f, w$ e3 K2 p- aend  k0 U3 z  s+ O. k

& b5 D: m2 w4 |0 Sto update-local-reputation9 {$ E( T5 M9 L. d7 u
set [trade-record-one-len] of myself length [trade-record-one] of myself
) t9 c7 s0 G, ?  o. Z6 s/ y+ \( W$ @7 s3 [+ v
7 G: G( g6 f3 _0 e" O: m: {. T
;;if [trade-record-one-len] of myself > 3
2 d3 Y" a/ @) [8 M- M& j
update-neighbor-total& w# [% B4 k, G* a* H- d5 y
;;
更新邻居节点的数目,在此进行1 w7 P. u6 {7 [  q2 O3 N
let i 3
) o# a5 ~4 W8 i( V' P: m; Ilet sum-time 0; {" L6 F4 p  f+ ], |
while[i < [trade-record-one-len] of myself]  t  a& m7 v5 [8 l
[
* [; V' E6 S  E2 Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 i* \& K; \, i0 C# vset i
& t) Y% K, _3 Q4 ]$ _4 d0 w( i + 1)

- D: t- u! K7 v( ~  S  W]
+ o) ^9 k- V" {3 z1 i1 [* B3 vlet j 3
3 q/ |  K6 S: U; Qlet sum-money 0% L+ e, m# a  g
while[j < [trade-record-one-len] of myself]/ s/ s* D) d2 O4 }/ r$ H
[
' W0 \: b5 A+ ^/ m% a6 I+ zset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! `! w& H: D( Q
set j
' b" B6 X" T' ]9 Z: H6 l9 |* }( j + 1)
8 _2 d% F2 M6 `) m
]
/ x1 ]1 y5 C$ c  }! h' F6 Tlet k 3
$ e. R( ^/ J' ~- Flet power 01 [  K$ Q1 O9 @6 V$ g- ]( U% l$ a
let local 0
) P/ d  G$ \8 U% Ywhile [k <[trade-record-one-len] of myself]
. h% u3 p( U9 c) B& E$ ?; R[, z' K' e8 B2 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) 5 Y: H5 _5 x6 @  W
set k (k + 1)
' T2 t( X. P; M3 ?) h0 z. R, i]8 z* t& z# B+ C
set [local-reputation] of myself (local)$ l0 T# X- X/ E$ f! k0 q- a
end9 x! e; a3 z" j

" D. ^) v* d: u9 I) s  xto update-neighbor-total, t# I+ K; h; C* o; t- [# N6 w! ?

6 ]+ Y5 g6 |* O' x7 T9 ?4 Qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! ~& s: u9 I' q( j
, e, O$ v; I; p4 ?3 [: l# J8 l3 h
0 @, N; S8 a6 U" a- g4 f0 l( Z! d8 P3 V
end
0 _. b4 k, R- }8 r# d
$ h* c- h7 Q1 [6 O9 Cto update-credibility-ijl ; \% f4 }% W, H  R, q: Q& x

* f5 X1 w6 \4 e/ X! b$ Z2 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。
/ S, \7 B5 I6 h. z/ q$ ?0 Q( H# H7 ilet l 0
' R9 r1 K$ |( Z; C2 Mwhile[ l < people ]
+ K# o4 [0 y7 r;;
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* ?$ N( ~$ A; N% r& ?# |/ A; e. K
[' n, F- R; `6 Y/ C+ p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& S# C9 T3 {1 p9 \3 @8 Sif (trade-record-one-j-l-len > 3)
0 Q5 n4 [- g* r3 a5 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/ q% |, f$ x" e3 `9 h
let i 3
; o. r( t  \' `9 J2 klet sum-time 0; P5 i# J6 |; E$ E/ Y
while[i < trade-record-one-len]" W, K, V; r6 f+ V1 R# c/ [7 x8 L
[: P" {) u$ H& y/ }/ `7 N9 |& n' F6 ]
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( q) j; M, h! U; Y) C
set i* F7 J2 {+ C: H* J/ f: f* t
( i + 1)

9 n: t2 @% [* h2 d: E]7 l6 V$ n9 |* h0 X" y
let credibility-i-j-l 0
, g+ J% m# v/ L) }# y3 C. E;;i
评价(jjl的评价)& o: G% M4 g( e9 Y. `% Z8 E
let j 3
6 ^" Q0 N  _, L2 F/ U$ E4 T" rlet k 4
& p1 @0 u8 d* q( t2 q: H  T& dwhile[j < trade-record-one-len]
0 f( y- ]( |4 z& B: E# q$ n. z9 S, c  P[
7 ?% }2 l0 X7 k7 A3 k6 L5 Jwhile [((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1 D) P4 I3 T) r0 H
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)
9 `; C; y' n' C. ~$ Q) Iset j
' Z) \/ o6 E0 V& s* }( j + 1)
7 C$ s, E- N6 Y- o. n4 d, U
]
. k( n- Z; E' e( _* f( wset [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 ))0 d" N7 y5 t/ J& o5 f7 n* ?* i

2 k( i! U1 v# t2 g' N6 Q
3 H1 Y0 k4 V) r3 q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) x# ~) M: W- J+ V; L: T6 O
;;
及时更新il的评价质量的评价) [. S5 }6 m! X* J
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& \9 v9 P3 @( u4 X# H, X
set l (l + 1)
! [. z3 {4 H/ [6 i]
' g. z+ ?$ Q7 J9 send+ L7 {' H' u& A7 Q; Z: G

2 l5 g. N' @" u" f, |+ |+ R6 x% ^3 }to update-credibility-list6 F- [$ x/ L9 B+ B5 ~" B
let i 0
" Q( s/ ^) D7 ^9 [: J& T8 J0 awhile[i < people]* t# j" q; k" q5 Z3 f
[3 g5 K. I0 B. J1 v
let j 0) \. W6 Q" g! L0 }* ^" [6 p
let note 0
8 p  g) R( j/ r% q4 Qlet k 0
! g8 T- H* Z, k;;
计作出过评价的邻居节点的数目
# [! S. b. m- |' x7 w8 \2 nwhile[j < people]0 `' G. x- h2 @1 J2 ]& h
[
5 E6 Y0 e% T# I* kif (item j( [credibility] of turtle (i + 1)) != -1)) x8 G2 U. V) q1 L& v( E
;;
判断是否给本turtle的评价质量做出过评价的节点
1 T/ e( M, v5 C3 `# ]. r[set note (note + item j ([credibility]of turtle (i + 1)))
7 w) _8 b" J8 T( m% l! `;;*(exp (-(people - 2)))/(people - 2))]

+ w8 U4 w0 K- R# F3 Rset k (k + 1)' ^+ {: S4 |/ q' M0 D
], L4 a4 g/ h, I4 _/ A9 L4 A
set j (j + 1)
0 n* j; m# r4 _6 [0 w]
' Y# L+ `) k4 Rset note (note *(exp (- (1 / k)))/ k)6 x8 _# z; r9 u) N6 U
set credibility-list (replace-item i credibility-list note)3 Z: O9 ^# x# g6 }- M! R# F
set i (i + 1)/ S% U  o9 s) F  x8 X- C8 g
]
4 t  ^: D7 ^' a' |: S  bend
, O+ n* U* b8 u3 M1 y
' i2 B9 j! E, O9 S% A% Nto update-global-reputation-list1 x' h2 n3 E7 j( r/ |" W, b
let j 0
2 w/ h. U* n( N  v( Kwhile[j < people]
" s7 N% }$ ~- x& ~[# b% S& T% b1 ^* g9 M
let new 0
9 U: l" g4 M  @2 B;;
暂存新的一个全局声誉- P- h6 h5 R) N
let i 0  R: R8 n8 ?/ f9 ~6 T! q
let sum-money 0* ~$ E9 O' o$ {+ g. G& k
let credibility-money 0/ v- T7 N& ~. r
while [i < people]/ o3 O6 \9 g9 I9 `% I
[
$ \+ l5 w9 t, pset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) _% }. i$ H) r3 v( Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" d: {+ c; b2 ?set i (i + 1)
! D6 w9 D- `* \$ b: ?$ G* h]
7 ~& P) S# H$ q; G8 Qlet k 0  ?. C/ V' Q. `5 m6 C- v; H5 C0 N
let new1 06 Q4 W- \& O( ]- p- O7 O- C
while [k < people]* A5 A! D$ a2 L5 @
[% J" ]5 h* I  Q% j4 M& ]
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)
' ?6 x" |# T- N, fset k (k + 1)
8 E: q; ?! Q# I/ g]
9 I. r6 j. N- k# V" `, tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) . Y( ~7 F/ F* Z# P
set global-reputation-list (replace-item j global-reputation-list new); U' |8 {/ c$ D) i: D! E+ o* L( A
set j (j + 1)* V; r1 T0 s3 [( [
]3 d$ d3 X$ ]8 s3 e, p
end
7 r% ]( i  Y: b' \2 w/ N
; W6 k4 Y1 l& d" e3 z8 t* ^' o# @. U7 k& l* f7 A$ z' r
7 u2 M6 B* \& m7 j0 h
to get-color
  ^( @6 |. z  q# `& O# ]; E$ A! I8 k# G8 ?
set color blue

8 \  h5 ^3 |$ ]; Tend1 u( w! w: m# D( o  `0 u! i4 _

/ Z" K# L- y$ ?: \& C3 {to poll-class) I: L% |) B5 T$ Q
end' ~( U7 s# |) m2 D. O, n& N
  J4 @8 O8 Q0 m% z$ d8 g
to setup-plot10 g. E2 X! L9 q' Y

) c3 W# X& e8 D$ w/ W6 ]  g5 ]set-current-plot "Trends-of-Local-reputation"
) O: X* `0 ]5 |1 G8 H4 [% p

2 n; I+ A* c7 D5 A) sset-plot-x-range 0 xmax

8 X, A: I+ W) g) y$ S% W  ^/ D* B, ~7 z/ ]( k( f7 K/ t
set-plot-y-range 0.0 ymax

+ G3 b8 n9 _7 Jend1 b3 S0 R6 \# j6 l+ h. J. ^

9 K' d! R5 I+ l$ Fto setup-plot2$ @; K& S9 h; Q) v+ l1 A
0 @# X7 s* V% `* r
set-current-plot "Trends-of-global-reputation"
' m3 a: n2 ^# j8 x& g$ {7 i
) K! ?, u  k& A/ b; D
set-plot-x-range 0 xmax

- N7 _" h7 d1 Z; O) _: V: `0 I* Y9 J: J- @7 j3 v
set-plot-y-range 0.0 ymax
- U1 x( D4 @* n6 {: g0 \
end
0 T* ~/ s8 Z6 S7 u* x1 j
+ u; w  T; @5 j4 M' m* xto setup-plot3, b$ C1 {7 l- D0 ~8 o, Q) Y1 k/ A4 y* P
+ E& c  ~' A, D8 c# s
set-current-plot "Trends-of-credibility"

& N" w: ]. R$ H7 j
& J0 s2 a& B1 p0 iset-plot-x-range 0 xmax

% K3 W8 s" ]- G3 m0 A5 O; ?
7 W3 Q8 y& o' |7 h- cset-plot-y-range 0.0 ymax

2 ?, n, u. a$ }7 l2 M/ Z& _% cend
3 X! b7 Q# L. [. @$ H
$ x0 r4 ~: R! J% R5 A- xto do-plots2 z0 Z: [0 ^4 A' i3 C( |6 E2 M
set-current-plot "Trends-of-Local-reputation"
9 G  @) O) L$ X# ~" b9 c& X9 a! aset-current-plot-pen "Honest service"- H+ J) p$ S" t8 t+ h2 l" V- k
end
4 X& u. _  E  U8 O* I
5 N  H- f5 q5 u% b[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
% F7 r/ _$ D7 e% w
, q- q2 f3 z! I& F: s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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