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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:
" ?+ X1 D  z* k& O% zto do-business
" U: ^* U+ a# K# B3 Z rt random 360( U6 o5 @) R9 G! D" K! ]4 N
fd 1
* |3 C' K0 t( U( Y$ v ifelse(other turtles-here != nobody)[% C- b: d; T& _. @; j! R
   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.5 P: ]! M: O; {  }* n  N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # W& k+ a4 }# @* Y
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 h/ C2 N1 G2 b6 o
   set [trade-record-one-len] of self length [trade-record-one] of self; Z. ~" l7 C; l# a6 U5 o% O
   set trade-record-current( list (timer) (random money-upper-limit))8 ], D) u; V" L+ S( A
$ Y3 h0 s5 L! s, Y! R; j. ?! j4 L
问题的提示如下:
% {' ]  F3 h* Z# g" {% \4 T9 u3 `0 H0 y) O
error while turtle 50 running OF in procedure DO-BUSINESS$ C8 l' E, O) D8 ^6 [
  called by procedure GO
& u* X1 Y8 U4 l* S( _OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' h' N1 u; M, Z+ s2 S7 [, U
(halted running of go)
* O$ P2 S* V2 g) k% i! j: W, o7 S( [- P5 x
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~~
' v! l5 s7 U! i/ I& ]+ {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' H& d* y( s) S6 l4 B
globals[$ i4 l4 ?! D7 t+ o" L' L
xmax
. `5 N$ a! e7 [0 wymax
$ j% U" A! I% W6 p5 w+ W; D& bglobal-reputation-list( t( g+ X# _/ h  l2 C; L: V
4 e# u7 h' x1 D9 F
;;
每一个turtle的全局声誉都存在此LIST! K( U4 G3 R" |; z+ i) [9 v! Q
credibility-list
! X$ b( Z+ a, k# _; ?" \% g;;
每一个turtle的评价可信度
6 }' w, B% k' L" \honest-service
$ }5 ?8 U+ A* M/ y  xunhonest-service: U. M3 k& k" _" g- J* _
oscillation- U7 I: w# w, K7 B
rand-dynamic
; M! x: M4 w& b8 V/ u]
* a% ~+ H$ F3 \+ I% v; O4 S8 G8 h
turtles-own[
5 X$ I  q& H, h& wtrade-record-all
' F# `2 V- a8 a  j7 n5 [  Z9 B9 A;;a list of lists,
trade-record-one组成
0 B, d7 Y; }( F# {) e4 @8 i* Otrade-record-one6 _1 m2 j( [5 i* b, B0 f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: g1 ^( r& A  P! x

6 l$ G# ]& ~. h5 I! F8 _- x4 ];;[
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]]
- }' F$ U( u) ~& M' Ctrade-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]+ w3 J9 ~  l" U, p- H7 L. V/ \2 a
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 o0 G; u4 L3 y: b/ Y6 nneighbor-total
/ a" L$ p- h3 e4 @4 @4 g;;
记录该turtle的邻居节点的数目+ z4 \) I9 S6 w& q1 o
trade-time
9 t8 C' }" h; S, e' C/ S;;
当前发生交易的turtle的交易时间
, E7 I/ b" }, B, i0 happraise-give. ^  U$ x' n5 E8 Y: `; [* y& w
;;
当前发生交易时给出的评价
$ f  E% E3 _. [$ k  R/ ^8 I, _appraise-receive% o" X' \+ w; {+ P% J& Y' ]8 [
;;
当前发生交易时收到的评价
/ D- [& m; q( J4 y  O  _appraise-time9 }* b6 F+ b+ U" _
;;
当前发生交易时的评价时间+ ], ?: O" ^* r2 N0 `! Q- h/ Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉& C2 w% E! I6 r' @0 ]% b
trade-times-total* k! F, `6 |* K
;;
与当前turtle的交易总次数
+ t5 y" z1 n% y0 ]* Ltrade-money-total: T* y/ [3 q$ S
;;
与当前turtle的交易总金额
* l2 S: |& [; l0 ]7 j2 ~( Plocal-reputation
/ ~1 k4 @: T- h9 ?global-reputation
+ a) u- ^2 |" M. `4 A/ P, gcredibility
  u; U4 e6 j2 B' _) f1 N;;
评价可信度,每次交易后都需要更新
) B  }3 _# X# P% a0 A8 J0 bcredibility-all* z, l. o8 @7 h: _9 n" A
;;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 z4 H0 D# C. c. p( _! w$ H; @' i/ E& `1 N0 H
;;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
, o4 z; G) U2 @0 Y- J8 Ecredibility-one/ }$ \4 E4 R; R! U: ?% j2 q! M
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
; K. c) {% b, o  P# Aglobal-proportion! h$ ?+ p; K7 \0 x
customer
" J* t2 G- L7 b3 ^) c$ q: b% I4 fcustomer-no
0 r* W) f, D& L9 `" etrust-ok7 o$ X+ m3 |* J6 j% y
trade-record-one-len;;trade-record-one的长度
/ M4 M4 l/ ]. ]9 P$ u0 D* k]4 B% h. j! r- q+ Y/ o: l* ~2 p

; k1 X9 e! T* E; _3 j/ ^6 o;;setup procedure
$ H; B- t$ D2 B2 S8 s8 b3 p
3 u% N$ o% i* ]& X4 Ato setup: R5 i7 P7 {9 b; N* B
* s7 m! @% v5 X' ~5 [8 r
ca

9 ?9 c3 h0 r+ O& O) Y) v! Z* t0 u+ x0 i+ ]4 g$ `" r6 @7 \
initialize-settings
# ~# h# ?3 |9 z0 S7 ~

9 B' T# P- H* }2 H8 g$ U6 acrt people [setup-turtles]

7 A; y0 K4 l) r+ n$ S: ?" ^, `4 Q0 A  ]% H
reset-timer

1 c! O& i/ a1 N/ F" M
. l. Y  w" y) j# Xpoll-class

7 m/ Y; _# L% d& S; r! q/ E2 f1 o3 w
setup-plots
' ^0 R8 ]0 I$ J( U5 C

: b; l1 e: o/ P+ b# [do-plots
( X6 s! Q. l! m+ j" x
end" o4 H( O% g% ?# O1 p( ]. a* g

: `, {7 g' l0 C+ n1 Wto initialize-settings
+ P0 o# I& i' n, X
& [$ ~' d4 X1 E# k/ C. F; Jset global-reputation-list []

2 Y& I# g/ V* A; ]8 L9 y# x+ A$ }
9 M8 I# N, R, g* ?! hset credibility-list n-values people [0.5]
2 o3 c' c6 R4 Z* s  M# v

* w0 P" r+ O1 [# i- vset honest-service 0

$ {# s. O- G8 z# P4 Y) F. m! k) B7 q
set unhonest-service 0
$ K* V  l5 E& n. C! f3 q8 n
4 G1 M. ]5 P! m1 k' K
set oscillation 0
# l* }3 ]" v. r+ {' I

3 w) j/ r' L4 r4 j! }set rand-dynamic 0
# m, a8 d5 e* v3 X3 a% W9 {/ }, h
end3 o0 z/ H% {7 P+ X0 ?: q
; `1 m7 L; Q6 O9 k* h+ G" }
to setup-turtles
' o. x' \' m. C" Mset shape "person"6 c3 e: @0 G5 M, G9 E# G7 ~7 u- a3 g5 @
setxy random-xcor random-ycor
9 |5 J/ W( B  |3 |* v* Aset trade-record-one []
) E. [  E: Y0 \: w0 A+ `2 a
5 c& v$ z, U! s  ]8 Q& ~% R. |
set trade-record-all n-values people [(list (? + 1) 0 0)]
5 _0 Q4 F" I. w1 q6 g- U

: a/ F* v( K$ e2 K; U5 {) Xset trade-record-current []* ]# i( C2 `' D6 o0 t3 h
set credibility-receive []
( a3 J9 O( a4 M! Iset local-reputation 0.5
  U4 m+ Z% _* a7 I2 X$ zset neighbor-total 06 W7 d( ~1 L: b$ H) }* @! C; }
set trade-times-total 0  m1 Z% A: N2 w/ }% L0 e# n( i
set trade-money-total 0
% j# @/ L- F; p# `1 Rset customer nobody0 @0 R* M* i' [, y  O
set credibility-all n-values people [creat-credibility]
& y: g0 O5 R; y; i! {9 Aset credibility n-values people [-1]
7 O. @1 E, s4 i' V, Gget-color
5 W+ J( T( X/ B( o
" s. k, H' ^2 [& b' s- x0 _
end
% Z& o* w$ c: Z) }; H8 H3 y5 Z) p6 x5 j6 w& m$ G* e* x
to-report creat-credibility
  {( W+ T% S6 H' H9 q# freport n-values people [0.5]4 y' j, E; Q9 m# H
end
8 `# e: P( J. N
9 f; [: ]$ |. u& ]5 q- M% Lto setup-plots; N9 H: w, j& c, D" D

1 i! C  ?9 B% g9 h' Iset xmax 30

' W5 s. k9 c2 }3 s$ x
7 o" x: i, R/ B: b% f/ E4 pset ymax 1.0

) A' B% W- H  G. ~& k( u) Y1 F( S  p9 ~  g/ @& n4 ^0 h
clear-all-plots
" O8 W2 \2 i% Y5 z" R! b5 ?6 d4 B

& B) O4 G* ^, s8 Zsetup-plot1
& M1 u2 V) z5 O# r
6 N! A# D5 R2 \: ?
setup-plot2

# q+ G8 O& r) g) L# f
1 q5 i- ^! A. m, W- {- ^setup-plot3
( Y: d1 x. G1 P! T7 x0 J; j  ~+ o
end
3 U0 {: `% h% r) N. I# O
; l% [& @. A3 B$ ]; d;;run time procedures$ J/ t: z' I* d! R0 U
' x/ z5 A) L9 `0 E7 A- y5 K
to go+ Z, T. q, g4 I2 G  H
2 [( \/ L" s& H* Z) I) h5 |+ D
ask turtles [do-business]
% {4 `9 y0 R' d1 b# d1 s
end1 ?! {# S& ?. u7 T1 {4 ~

9 N, n7 Y+ [, bto do-business
% J7 M7 ], g% q: u: e

' ^, |1 Q  |- Y% R. C9 k
. C. T% I$ o. Z6 art random 360

/ {; ~3 k- z  N* I  T, U5 z/ O3 f  a% G& o
fd 1
8 S/ p. \: R/ K- K9 u
, @  S- ^4 Q. P, x: r* M1 O6 Q9 K- f
ifelse(other turtles-here != nobody)[
. F' T2 ?7 M: ~: l" U9 b: y! U
: S$ L, E  X# e+ s9 f0 w
set customer one-of other turtles-here

2 f, d( W4 `' ]( f4 `
/ h. C. c# ^( Q* j' j# @;; set [customer] of customer myself
% n9 u/ ]" w. ^! z8 n4 Y
, Q/ x0 ?7 d& A) V
set [trade-record-one] of self item (([who] of customer) - 1)4 d6 c8 n. u- ?; h. [  q1 D' _) r
[trade-record-all]of self
! @3 W4 M7 T$ U$ C7 T* A; w' [;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 i$ L8 z7 x( k' p8 H

; ^; f5 q# x3 Nset [trade-record-one] of customer item (([who] of self) - 1)
, ^# u) l+ F1 }9 ]$ ~  ]2 N% s[trade-record-all]of customer
2 Z) b9 K, C7 ^( @

  k5 }) b; w: X+ {set [trade-record-one-len] of self length [trade-record-one] of self
  O$ {& Y7 a* X

# Q& z' N7 k9 m) \, B5 _/ yset trade-record-current( list (timer) (random money-upper-limit))
7 x/ A; r9 i% d2 s
# u$ H. O9 Z/ C: F
ask self [do-trust], ]6 ^1 I& d( w& M" e" j" i
;;
先求ij的信任度- t3 m, g- z5 {& e6 p% p+ i

0 n9 x  I6 ?4 P( M( Fif ([trust-ok] of self)& V" E) B$ V+ w0 S
;;
根据ij的信任度来决定是否与j进行交易[5 N% C+ `" i# A( u2 e# {" ^4 Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 n  H3 p; V2 D* o/ D# u8 y
% E, k* r+ q# V. L! s3 b
[

$ V1 t! ~, @" a* ]% [9 @" q, o9 @) B8 }
do-trade

1 y. b: g/ q2 ~* R& v* P
0 o  o  w' I* cupdate-credibility-ijl
0 c, D; K, q! O6 `: Z9 E

0 E% U) J# s2 \# }update-credibility-list
& T) k" q6 b  \
% l2 K8 J% I" q# N2 [- _9 @4 j
; G9 z# }& w  s/ G2 o
update-global-reputation-list

/ F0 N5 f$ o* }" C. a/ X- R  d" u' k- c; Z. `
poll-class

' N9 Y( W( ]3 ^/ X+ X1 M
/ P; o8 r% J1 {8 dget-color

1 r2 T( Z8 j2 O: Y+ x) Z$ a
' Q, V+ L# T1 N( T! P]]
& c3 k1 e9 b1 N* R9 a9 Q$ A3 o& t8 `' ?$ F) I
;;
如果所得的信任度满足条件,则进行交易
' g$ l5 T* }& @' a' K4 O- a1 p! g: @) x$ L2 l0 l  \! u: ]
[

  Y1 z3 U% ^3 M0 R% j" u) O
1 V3 F2 k' B  W# Y0 art random 360
  p4 S: s- [2 U+ o, A
( {) q) U. g- Y( t, g0 Y  T
fd 1

" I7 E3 _* B$ ~0 ~
# p$ e- M. |8 S7 I: l  P3 s]
3 K- q' x% }' l
: _. Y4 a9 J& \% Q* ]
end
8 I1 G0 [) P4 Z6 ^1 g1 j' W: E
- y" K. s" Y! V2 r$ {
to do-trust / p1 _) t7 q) q: y& Y
set trust-ok False# m# U9 l: I+ k6 S; Z: {

( O  b2 ^& w5 {% E# \

) R0 t- B6 W& z: x+ zlet max-trade-times 0! H& c* Z. Y0 D, H
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) p- E5 p' @% e5 r1 l, _% E' Y
let max-trade-money 0
% K8 ~4 B) v  j, l, sforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
! d' Q+ d+ T! g0 X+ h8 slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 C$ v, Q- d* U) q0 \

3 F$ ^# v* l/ _: T) U

; p" A* {) I. y8 M* Dget-global-proportion. K: x7 A* `* L8 D. x
let trust-value" t+ ?$ ^" }, V
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)

+ T3 l9 Y0 f; @- i. i2 H% w; oif(trust-value > trade-trust-value)3 `1 v' j' O; d! I1 S
[set trust-ok true]: @7 ~6 r1 K5 @' ^$ C% L" m
end
0 [, x' ~6 V7 ]' Y: \
# y$ R; |3 n! r9 Kto get-global-proportion3 x' Y0 d. y1 u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 P& Y! b5 o  S, f7 ?- i
[set global-proportion 0]/ `- m5 q& G, w# e
[let i 0, x$ ^- N* E  D
let sum-money 09 F& y) ]3 T. J* @
while[ i < people]
( Z1 K$ {" _- P. g; d; o[
: @- I7 }# ?4 w6 p# z2 Kif( length (item i3 h% `: E/ j. Y/ s" O5 v! b
[trade-record-all] of customer) > 3 )
+ f, J: T9 N( s3 j( F
[! r& w% |* U% b" Q( s& s. ]4 d
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 H' t7 H% `8 R8 c+ O1 {# @0 m* l5 d]
# x+ `" I0 C8 f& z! J]
% _! d( s) }1 _8 Vlet j 00 e% \* x; x3 z5 l
let note 0
  j# q; M6 |' @1 owhile[ j < people]0 @  T1 S& O6 H# Z! g: z
[
' z  K* L' o+ tif( length (item i
. O% x. Q" ^7 H  M[trade-record-all] of customer) > 3 )

# S' X' }+ k& E6 A' g5 X4 b1 Y) s[
! \9 t* n2 n0 n5 W& H5 ~' H- L8 m- Wifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& i/ W3 B* ~8 A  l& ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ ]3 c' L. C5 c1 `" A) ^" ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 C0 ~9 a( F% {5 l], J" |8 A- y7 e$ ~  Q5 `
]
% \% X' I6 V9 }set global-proportion note) f3 e1 \" {4 `  _2 t# J( Y! X  P
]
! T0 X5 P0 M" ?7 Q( f# d7 Q& Vend3 L2 P; P) T3 |  O. \: a
% Y. w! }* ?) k  E7 u0 i5 W5 {0 a( _
to do-trade
% B6 r7 c4 i1 O( P;;
这个过程实际上是给双方作出评价的过程
; O0 L/ Y; {' q0 f/ Z+ G, X* j! iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  U9 O, d% \# Z3 C7 H& R$ O9 @. W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ w* O/ s5 D% |5 A$ b4 b1 _) yset trade-record-current lput(timer) trade-record-current- B+ l# v8 G* L* F( n% t
;;
评价时间# r  N& q7 j1 k4 |& h! [
ask myself [  Y) e0 p; W4 |9 n. Q0 V' ]" j
update-local-reputation
4 I8 F# s# ]4 U0 [  bset trade-record-current lput([local-reputation] of myself) trade-record-current
" ~# r3 u5 y: l5 m]$ r4 g; Q/ `4 x% E; }& K
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! h$ m, V; O5 O  s;;
将此次交易的记录加入到trade-record-one/ h$ y( y# p0 [1 F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 V  L5 s, B7 i9 ~% V5 ]6 olet note (item 2 trade-record-current )
! C0 u- W8 }9 u$ I$ dset trade-record-current1 X; [& p! \' q7 K' W1 n* v' L2 I% u
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 h4 M# I5 }: f0 z8 S, q
set trade-record-current
/ e+ ~7 K* B) N2 e: z9 `(replace-item 3 trade-record-current note), \& Y% n4 O2 v/ z1 f' n
1 Q# d' |' y5 n8 ^" U. D8 l
, s5 H& P  `% {1 a: Y* k
ask customer [5 d0 Z) \1 l' r
update-local-reputation1 l( h& Z3 e+ y. ?, S( k
set trade-record-current5 A' \. t* q6 a# Z) I, z  y6 E
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& `' y. Q5 M4 G2 U  X' o. `6 y- O4 \]2 T3 v) q9 I. i3 [+ Q
9 l9 _0 w0 r; |

  O9 Y( O9 }9 K# a1 D) J+ R7 M7 bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- ?! m0 H( s# M6 {8 O

1 I4 l7 s1 I' f5 m0 ~- Fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! x7 B: l$ }8 w5 ~# [; T
;;
将此次交易的记录加入到customertrade-record-all
5 L. M9 ?2 E2 S4 I* o! l1 K! zend
' {3 h1 e; K1 x& U
8 O# B7 S% A+ Dto update-local-reputation) f0 ]# O# G6 N: o0 W. {
set [trade-record-one-len] of myself length [trade-record-one] of myself
) W, T( R9 S. ~4 D# Q- [
5 Q. U# X9 m4 ]* L- k% l& @$ ~" x" w) ]" U
;;if [trade-record-one-len] of myself > 3
0 {- N, E0 D3 l* z% E% ]: E
update-neighbor-total# s7 F6 p& b" @6 B3 J8 U! |
;;
更新邻居节点的数目,在此进行9 I0 ~9 _0 H  b2 }
let i 3
' z$ _9 X) H5 ]6 X& d) b4 rlet sum-time 04 t0 m) o6 j2 ~' n* H5 _  k
while[i < [trade-record-one-len] of myself]- _; t# ^! h: ~- }* k+ z& d( n
[
" S$ S0 W9 G% A. n* {/ E4 oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* T. x+ @) L2 Lset i4 `- ?8 v9 d$ c5 ]- w) j- B
( i + 1)

+ R, F; [) O6 s3 H7 L7 O0 b]% f* d, k2 m8 s% R
let j 3
  f: z0 Q7 P7 [" A, w2 H6 Z' klet sum-money 0% W; }! \1 Q8 r$ r/ c) P' l! N" I
while[j < [trade-record-one-len] of myself]
6 K3 _" X, S; f" ]9 y[
- \( H1 v5 a7 n& Q" r# z9 X4 P" Hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
, {; q# }; Y+ ?" ~- nset j$ d- B* D) ~1 V  z
( j + 1)

9 _, a8 g2 I: k# H" y9 o]
0 M0 F; k( Y" T; Rlet k 3
; R- u0 f- X) O9 Rlet power 0
# i' ?$ `8 _* z* F) F4 \- a5 qlet local 0
$ S/ o3 `# w  }" q; Uwhile [k <[trade-record-one-len] of myself]
- {3 Z1 t1 i! V% C[3 @3 N8 S7 V3 C) N. i1 |% ?
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) 1 q( Z2 N  N* k, L, z( S
set k (k + 1)
& R3 Y1 N4 K4 O1 c1 }6 U: k4 [% b]& _& e7 t! z, n8 G; s) ^
set [local-reputation] of myself (local)) ^- O: g* z, `- K2 o" S; f4 X
end
+ s) d8 O7 E( w" R3 Q- b1 n  V% R5 I# F! u3 x* }6 B- k. @
to update-neighbor-total& z, H% L: T8 {2 }6 G3 P! H
6 n7 A* @8 A, q( L! |  @+ O( A
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' S: r3 p! Y4 o  V1 n9 y

( J7 C6 S9 }, @# w3 s! W
9 b5 T1 ?; T/ k+ g4 {' [5 f
end
' Q3 p$ n" U& b0 d+ B2 _, }% G- x  b( t3 z7 L7 i
to update-credibility-ijl & E: Y+ F- X$ O( J$ s

8 B9 p, O9 V; i& 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。
! A  C5 k' O0 J! O$ _7 H% ~let l 0  [* Q* `* ]& D3 O8 a( w2 n
while[ l < people ]
1 B' W/ T6 k# R6 z5 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; w" L$ x+ R( g  v* E* S' x" d
[+ q7 H: e$ L8 a
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* {8 Y* e& S; f+ kif (trade-record-one-j-l-len > 3)
2 z7 n  I1 ?% x" D6 `' f  c5 I[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
3 n: u1 C: E& P+ K) T) _9 P  Llet i 3
  e' \- K. [4 F: S& ]2 m1 ], Nlet sum-time 0' P7 Z/ i' d1 d1 j7 |7 _
while[i < trade-record-one-len]
/ M) w; R1 L' O# Q7 D[! x5 R* X  |: ]! ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ s4 w- Y/ C8 [1 y; z8 i3 ]+ M" R
set i7 n3 ^$ {1 I0 l  I8 L1 B! ^% K
( i + 1)
* V/ O7 |0 A0 I% t: s+ g
]
8 x5 N6 A, I, e2 alet credibility-i-j-l 0
, m9 `) P0 `$ x;;i
评价(jjl的评价)
" ]2 E) L: c: i& M  Y$ P5 e5 D) `let j 3
4 y& e( X* p  p, l' q7 O" }* elet k 4
7 E6 A3 U6 ?! f, p8 X& uwhile[j < trade-record-one-len]
$ X( A) e" o8 b# a[
% @7 G$ D3 }8 Q# K: j4 Gwhile [((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6 P# q9 ~1 w1 ~
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)
6 }+ q6 ?. k9 M* R6 ^. y2 d! kset j
6 Z. }: i, l, d" z( T( j + 1)
6 A& d& V% G2 n% o; W
]
1 L  q1 F: B4 A5 D/ 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 ))
( A* Y: f0 M) u
' R- c- D3 Y# b9 ]6 e

. W% a: ]! }% a2 N% @0 @let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& h4 @! x+ f. j, [
;;
及时更新il的评价质量的评价* x# @& l1 }$ C7 I6 k; C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% G( [+ w3 ^) w* [% W( X0 Yset l (l + 1)
: Q) `9 @9 Y" Z4 I( }! e& M]
7 [# ]$ k* }/ \7 `9 T% K0 |& Z1 Kend; w1 x' u# D1 n

& n! A! b$ |' N9 ]* s, p2 R5 oto update-credibility-list
8 N  A1 m, v/ h$ b8 Q6 Alet i 0$ D/ o0 z/ }0 d6 y
while[i < people]/ Z& v9 Y& \* R( l
[3 o- p! S) u0 k: q' G: L' W  d
let j 0
' ]+ w* I" C4 z. P0 u, Elet note 06 o; a. L' b0 h" d
let k 04 z  f# ]7 i0 X# f+ {# g
;;
计作出过评价的邻居节点的数目
9 P! c  p0 [2 _: L* o+ \while[j < people]. u8 x) h# ^3 L8 F
[2 D, w1 z5 H) e5 p* ?
if (item j( [credibility] of turtle (i + 1)) != -1)) f9 K2 P  L* {% L
;;
判断是否给本turtle的评价质量做出过评价的节点! ?7 ^+ f# b! S$ U) L. e% H
[set note (note + item j ([credibility]of turtle (i + 1)))
& w) s' v& i5 b5 Z" T8 s7 v;;*(exp (-(people - 2)))/(people - 2))]
- h; x1 Z/ W- w
set k (k + 1)- B' O9 ^3 m  ?5 D
]
- T+ g. s* d3 {% M- g& _+ qset j (j + 1)8 ]5 V2 k9 m' u- G% E) u" _
]
4 H: r- L( ^$ I! m5 Mset note (note *(exp (- (1 / k)))/ k)7 M9 i7 @% b* N  S! H
set credibility-list (replace-item i credibility-list note)  w; A( D7 \: k2 f
set i (i + 1)% m* e( P( ]6 e1 |
]/ F* u7 F  t6 M2 f8 }( `
end0 }  g; Z# d. n3 N0 J6 q

8 v- r# G6 Q" t; S' f+ F! s( dto update-global-reputation-list( N( a" l' H& k, K/ a
let j 0
& F* d+ R. k$ V+ N% k* G) hwhile[j < people]
2 j$ I( ]4 q% y" M$ m" n[
. K* J- |! S$ ~: Ulet new 04 H" e; H. s4 n* L$ h
;;
暂存新的一个全局声誉
, ^" f; v3 Z% F$ E0 W, }! [3 {let i 0" a3 \0 U& A: u0 z: A6 z
let sum-money 07 A. W( [( I9 t
let credibility-money 0
: N! q  j: |! _. mwhile [i < people]3 S7 ]# C" B% v' j
[9 w5 D. y9 x; J
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 o+ D& ]% w( |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( j: a1 N8 S( \4 E/ \9 d; K% E2 wset i (i + 1)- Z  \6 g: n( Z4 G
]( B- ?! D' ?' W. h1 e6 f6 t1 W* N
let k 0
5 Z+ [: J; @7 ]1 `1 Z& R6 z6 Ylet new1 0
( C/ b# A3 q/ o: ?2 o( xwhile [k < people]1 Z4 @# B7 Z: v3 n
[" n9 L: P+ @2 v8 H, ^
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)& }1 a, J7 ^! Q9 @' P
set k (k + 1), P( F7 [- E, Y8 o9 [! R
]
( W7 o$ k' Y3 ]* ^9 [* Q& sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% U% K7 Q, _  Gset global-reputation-list (replace-item j global-reputation-list new)" v  p- O; S& N& J: n
set j (j + 1)+ N" w* W" n* n! }# g5 l% u2 `
]" y! d& w, c/ D) a9 Z# h
end
6 C  `( `% G: X6 B  P
' Q" ?" ~$ [. _' m0 g+ \5 R  K2 \: O; k

/ Q; m4 v  K# u3 _: \to get-color, ]# A1 l+ B7 o% e3 l1 b" |
$ f" f* G$ ?+ w0 K: x5 P2 h
set color blue
# f2 L. [2 F& A) e
end# V7 @0 ^( }( ?

, H& n. C: s% d% W. T, r3 Cto poll-class
! d' {# ]3 Z5 |7 ~1 Oend8 @. \& E* J! c! |

  J" q8 |) x, p- f* y( ]9 sto setup-plot1
8 R; u5 z+ R6 {% A# Q4 P% w3 u8 q  g. Z4 [( D+ q) f3 k
set-current-plot "Trends-of-Local-reputation"
5 ]0 @3 @) l7 L8 L
- m1 E$ [% c+ S) A
set-plot-x-range 0 xmax

. `% r, ?, k9 F3 {4 N3 O
$ p! R, `8 e8 c. s. v3 c( Dset-plot-y-range 0.0 ymax
! p1 F3 Y+ y1 H* e
end
7 b3 R- u2 E1 `; X! N9 j
3 ?/ e  K- i( t7 R" _+ f4 H- vto setup-plot2
( t+ m  H: J; B0 Y& l( S4 g! N
# P! ?# x- T2 o! o2 lset-current-plot "Trends-of-global-reputation"

, T& A: X1 P+ i; I# s4 b- v+ B, b# g$ u( Y" Z
set-plot-x-range 0 xmax
' e$ w. b. L3 Y6 Y" t6 L* z9 Q

1 q( |3 o; z+ o+ aset-plot-y-range 0.0 ymax

, Y( I; H0 @0 w! V+ G' ], Gend
: r0 q  c' c& z" b
& d- I+ H5 H9 d/ s: A( l5 \to setup-plot3
% C+ w  `/ }# J5 c) _
. ^6 [- T# x! ~9 z. ^, R/ _set-current-plot "Trends-of-credibility"
- H1 s4 y0 w. v( z4 s

$ a% m4 O. n7 H3 Iset-plot-x-range 0 xmax
* @( u2 u; T% E
$ b5 h( i) s2 m# |8 ?* u! O
set-plot-y-range 0.0 ymax
% H6 Q2 ?* X7 A. r5 N
end
* R3 ?+ `2 B3 Y  s
- q! Q, h% [7 O9 r7 u7 {to do-plots
* V5 i9 W' _. f9 n* c( E. V, Rset-current-plot "Trends-of-Local-reputation"
, V8 J$ P, R  H+ Q8 A! F$ I) Vset-current-plot-pen "Honest service"4 U  q5 ?/ t1 K! |
end: Y4 c( z: J; }4 E! R7 u
$ k& i9 ?: K3 p4 Y! G+ @4 ]
[ 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.
4 Y, M2 `2 w* L3 c  q$ B0 m' \! ?* i( Q
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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