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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:" ^- Y$ J7 {5 B! E' [: f
to do-business
6 H* `% ~. l0 q5 e0 r" \1 |" T rt random 360
- u1 o8 k0 j# L4 M9 U8 v fd 1
! z9 j: O. F  p- y5 w- M+ ^' s ifelse(other turtles-here != nobody)[
; n: k+ y- l& Z   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& D  w; p$ Y3 j' T, r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ o5 N( q0 x/ o% `% }8 C" l   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( j* c6 c$ ~; `  B. ?( M& h
   set [trade-record-one-len] of self length [trade-record-one] of self( N9 Y* E9 R7 \2 p9 S/ V, k. `- R( l
   set trade-record-current( list (timer) (random money-upper-limit))
9 o" T2 i! i; s: J* S
) E" a$ ?  a0 p% u# ~* T问题的提示如下:
  \5 m" O. B2 {9 ]+ [/ @. h6 g
: T' I( L; P2 o/ n* w' {6 zerror while turtle 50 running OF in procedure DO-BUSINESS
. R5 c3 f: I, J. i& X  called by procedure GO5 p2 w" x5 Y, S: @9 R  p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
% A1 r! B8 r; q" s* D& h
(halted running of go)
6 i: w3 p0 Z0 b- c" L, c" E" v4 B; n/ D8 ?9 \4 d% u+ x; o
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~4 h8 L/ {& t4 G0 X: R
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- ~; l, j9 U& b/ C! i; F7 r- J0 g
globals[0 o) L% K" g/ F9 u" A
xmax: Y* o' i- Y! d3 O+ {8 d
ymax
2 b; d! k# b+ \9 A' a+ vglobal-reputation-list$ \# p1 r  ]$ `$ H. k5 D7 \9 ^3 s7 _
) t5 V# J& v$ c  E! H9 i* `
;;
每一个turtle的全局声誉都存在此LIST5 F# F- m: _& B  [  b) l6 u2 s
credibility-list
8 Q, J3 {1 m1 u+ F+ G# [" T) U;;
每一个turtle的评价可信度
" S& `0 d9 t" I' X5 X! P% Shonest-service
2 v# A- J4 ^) v  Xunhonest-service+ G2 J, c- i, w! y# @% \. G
oscillation5 ~3 o" X7 |* A# b0 y
rand-dynamic, A0 u2 a4 N4 `% A" F, k
]# L+ Z* o9 v: M2 _8 c

$ C3 X( T: O4 r; j) v! rturtles-own[
; J1 i2 @" ^, j* Ktrade-record-all
, Z' i7 w. C' r6 c* C8 n% X6 x5 K! |;;a list of lists,
trade-record-one组成
2 B1 x$ m. [" ?6 ^- D# l5 htrade-record-one
1 ]! J$ `5 g( p; @% ?1 U0 l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, y4 O% B7 V  E: _  [5 W8 ~& J
  }$ j, A+ i7 y* i/ A# f) J
;;[
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]]
9 a. y9 h% V. D! c) n2 A' \% xtrade-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]
% B0 I) f4 x; |8 Wcredibility-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, E5 V2 e" Q1 [3 ?6 K
neighbor-total
) w+ i4 r# G5 K# `3 i3 C2 n% |;;
记录该turtle的邻居节点的数目
, e  v0 Q9 ?) T7 y/ X" ntrade-time
- h  e4 z  }! y0 m+ `9 F;;
当前发生交易的turtle的交易时间
: f' m$ w7 r; U, v/ Y0 vappraise-give1 ~' m, J. P! ]8 h8 B
;;
当前发生交易时给出的评价4 V3 N3 Z, _4 v* s. D+ f9 K4 J
appraise-receive9 r7 H7 b/ g* h! e2 H8 d
;;
当前发生交易时收到的评价! i; ]; d7 Z1 F7 H
appraise-time$ n; ]2 n5 Y1 W9 M6 k
;;
当前发生交易时的评价时间0 W4 N% V  k% b4 W; M9 }1 r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( x& D8 P' }9 w. n3 Z
trade-times-total
, e; Z/ t+ j" _9 y6 d;;
与当前turtle的交易总次数
; |: W8 p' k5 ^trade-money-total# I6 b$ x8 f- h9 h
;;
与当前turtle的交易总金额5 _+ C) {  V7 r# T5 n7 l
local-reputation9 u5 d  n5 o( P
global-reputation7 i0 ^1 g1 v: f4 ^
credibility' [' j1 s* y: s5 c( u9 C, K
;;
评价可信度,每次交易后都需要更新1 B% y6 ?0 K! h+ I
credibility-all
- H% J& ^7 i  t2 A3 s7 N+ a: b;;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 |) T* `( p, v, W* \2 G6 p
* r9 @; D$ Y& N( `+ H" U
;;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
  x/ t( t5 C' k+ icredibility-one
$ \6 e1 K7 ~+ J5 P2 W) G$ E" a;;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
; I9 o/ |9 d8 q! j% M1 ~& wglobal-proportion' _7 l$ y' p: H2 Y! y) W" |! E
customer
' a1 u" H$ O2 s& v- n! w( ccustomer-no
# a' y: c8 i- c! E! ntrust-ok
: a: j; m' B! ]9 ttrade-record-one-len;;trade-record-one的长度; V' u9 _9 K# {$ H
]! L8 }& u, E& A0 a: m* O  |# R

# g6 j4 `3 c  ~4 Z3 ~;;setup procedure
9 d: {7 S9 _7 J
8 z" I1 d; p1 x) Wto setup
" ~4 E; h$ }4 u. V2 p& t0 M- d' b
, w1 Z+ ~% ?# F. T: B5 T, ~9 L2 R+ [ca

! @1 O4 V& ~! v. k8 l) Y/ K. k' D; R; q, Y6 I
initialize-settings

5 |' p& C' K1 M* I* `3 H0 O6 p" o% R
3 R' R2 I7 K0 C: C+ ^# ?crt people [setup-turtles]

' q0 n" ]6 y1 n& m! j. }+ G8 p4 Z6 U* L5 y
reset-timer
4 I! u2 p7 {- w. A; d* j; Y6 y$ B) Q% s

9 ]- P0 J3 T6 j: J% H1 ^: C" cpoll-class

$ I; D  ?" D9 _  ~; m% ?- f! G  A
, Y# |9 O- t3 v* j8 F. vsetup-plots
: Y1 }. ]6 M  E0 K0 P
: @1 \2 A/ m9 i% H% r
do-plots
. l7 j8 D' |3 ^$ Q3 B, S" l
end# y- W# n  g9 g, y$ n- U% `6 I
- q$ g8 }8 q  u! s( I
to initialize-settings- i, {" s. j+ v4 L1 K

8 e, c8 r  M" k8 V# O  Vset global-reputation-list []

/ n. a% k  X7 \
5 w! V8 T1 o% e! t) e  t: {set credibility-list n-values people [0.5]
  H) m! u( d0 F7 Q

6 T( U4 h  b6 g- @# X2 ~, ~set honest-service 0
9 {4 i. _( ?# [
, Y7 Q8 I4 i/ O2 q0 ?2 ?: l, L
set unhonest-service 0

" N# Y9 q4 w: X9 z0 V9 c
9 c4 P! q( N6 k. K1 ~set oscillation 0

9 m! |9 N+ a) N6 Z& X
8 d4 \3 g2 e9 h/ {+ Sset rand-dynamic 0

; @, S( q- K$ e9 E: t' S/ Jend
% i3 ^( b( r( B; r% ~& A
5 w7 S) }$ h: Oto setup-turtles # U: i1 U) |; s2 e6 Q6 L
set shape "person"
1 V1 e5 E# ?2 J, W$ ksetxy random-xcor random-ycor
4 N4 k) Y2 V% l1 Y* P6 }set trade-record-one []
5 j  _8 g! j7 m/ T! h
" r6 X+ E9 ]2 Y7 [# \! k, _
set trade-record-all n-values people [(list (? + 1) 0 0)]
( x, n2 y% S; W0 l/ C: D# w

+ M: k* f" N7 e3 j  F4 \set trade-record-current []! t0 J, Q# T& a( L
set credibility-receive []
* R  n. n0 h, X, vset local-reputation 0.5
1 R% ^3 }( K; X" |% M0 Tset neighbor-total 0
7 V; z- a+ h, M) i2 E, h* ?2 rset trade-times-total 0  b  ^  V" A5 m+ I) j. ^
set trade-money-total 0
; G8 v, g( C+ {- y* wset customer nobody4 W+ J( l; ]) _" R, q
set credibility-all n-values people [creat-credibility]; ~. p+ X) ]- W
set credibility n-values people [-1], E; X" p7 v3 Z% l; M
get-color
' x% [/ m$ F" L- B/ x
/ M# Q/ A8 x3 ~
end
3 k( r# e: z& l0 k8 A* j* S1 y
; P, r  w, l' D! X3 T/ {to-report creat-credibility$ y, o0 G* l. X" x
report n-values people [0.5]
/ d/ q' ?4 w+ ^  n1 I$ E0 |end8 e; J$ Z; n3 d- i6 Y7 b
  d5 W1 Y. t5 D
to setup-plots
# X8 I+ ^; `" X3 A6 H: d/ k, h
set xmax 30
, f7 U# t0 R3 l  m+ t# i5 \5 H% c
- c- _) z8 @7 u- M" j$ A
set ymax 1.0

  M) N2 z3 j8 J2 Q: S7 D( Z6 s$ J4 Y1 \) D
clear-all-plots
. [8 T: q3 `& S

- Y5 O4 d9 t: u3 K& J2 vsetup-plot1

) E9 G8 H4 U9 x# @0 p4 E; {6 |8 w' [, m3 G
setup-plot2

9 H0 r$ f, j* p( @9 |8 E  u( E7 Y4 k4 i
setup-plot3

" u( u0 Y( ~7 C! C, nend; I2 R2 K9 M/ S8 D

: r& Y- n1 l/ @: f  i;;run time procedures6 v# p; q% z5 e5 p# J# y$ g, U1 }" G
# N4 A- B. v# \3 W( J/ A
to go
1 ~0 j# e& I' h3 |+ T4 u( _! m2 T0 s8 W, f5 R4 ^7 k
ask turtles [do-business]

; D. k  p! _* E# _end% a/ X& A- W6 z" j
2 _( o7 X! u# Y! X% P/ F
to do-business
, f) R2 _: O9 S* Z
% g  J; c# Y! w
/ u5 |% H  b+ a! x8 A& ]1 |
rt random 360
5 o1 I/ ?5 Y/ t) ^7 X; B
5 |. p9 q& K& {$ y
fd 1

) K& r6 m' P$ h
2 u; Y; }% f/ y( Difelse(other turtles-here != nobody)[

7 \9 H: `" P. l; e4 f9 S  ?3 ~# a: M' H
set customer one-of other turtles-here
7 r9 H% f) k& w0 h% @9 B
' A2 L3 r! R5 J9 q, s
;; set [customer] of customer myself
2 |  Y( C/ n: ^2 o' x5 X

+ g1 `) C& y% Pset [trade-record-one] of self item (([who] of customer) - 1)
9 e; T" O2 D5 R3 \$ c3 _( i[trade-record-all]of self- x$ \5 G! \/ |, ^, x
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! m* g! |& a% S8 `  y6 O  P7 ~
* J5 W7 m0 I: H! hset [trade-record-one] of customer item (([who] of self) - 1)# N) ~" V2 p! f  ^% p
[trade-record-all]of customer
- [& k* w* @( Q! f. T
+ l7 I: ~' R6 [' R$ h
set [trade-record-one-len] of self length [trade-record-one] of self

) _* {# |& k3 u2 O; M$ r4 K/ c4 t- F" m5 {4 R
set trade-record-current( list (timer) (random money-upper-limit))

: O( D. z! x- G1 d- ^+ H' _% S
& e* u, `  t7 o8 ?" n3 ]1 Qask self [do-trust]7 M( E- W; ^7 e+ F; Q, W
;;
先求ij的信任度
; v5 \3 c! l8 T7 Z$ F: `
, w4 @5 O( b" z& G) Q: n- |' ~! f8 w) Oif ([trust-ok] of self)8 Y  @9 w8 P. Z  ?9 k1 t8 N, A
;;
根据ij的信任度来决定是否与j进行交易[5 x/ B" }' K- F% o& `0 [
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ k, U/ l: h8 h. Y  T1 k" o( o+ i: c/ D" w# O: [, x/ W" p
[

4 d: F7 t2 c: }, F+ ?$ \5 l8 J( u& r7 D( [6 i$ C6 m6 t
do-trade
. T8 c1 b3 b3 H2 }9 T# s9 U
$ j6 u/ s0 z' ]4 \  P! |
update-credibility-ijl
$ E$ D: I3 t; o# V/ \- S: ?
: M; _9 U  F6 h
update-credibility-list
( v" W# N1 r" ^) P* w9 C5 J3 K  f

* {8 W& w0 r. [! g8 z4 @) O- [
! A+ _4 }& `! x! eupdate-global-reputation-list
0 L. w# {& R1 O! \" m

! n; w! _! v! l8 Q- M; N+ f% mpoll-class
2 {7 w+ y4 G( z' H: V" V7 B8 s" u
+ \& }3 L+ M3 u% l% J
get-color
# P  Z! L2 x* B7 R9 O; i

# q$ C& b* O- Z: @$ p]]! \7 a' t5 f4 F" Z' K

: }7 S' [* ^7 S, O;;
如果所得的信任度满足条件,则进行交易
0 g& E5 ~% Y. V# ?
; q  h6 o# S' \5 O* B[

, ^! K, N7 }% B: \$ t  C" J6 K% x& W% J/ ?/ h
rt random 360

8 y' V' |; f! N$ Y& J/ i, _) E3 l7 _' D
fd 1
. Z; t, }7 s) n4 K% D

' @& O1 x3 _$ h; E, Z]
* `+ B  m7 T. j: w) a$ ^" q
4 k' _, B$ E, y$ F, v/ Z
end
+ \6 Z2 Z/ B# U, `8 h

% H" k$ ?5 U# i3 h8 h  x! \/ [to do-trust
8 p, n- V/ g& `5 Y! Gset trust-ok False# ^: T* h5 S# I- }' q5 ?$ v

' i& l# p. Y/ Z. G5 D0 H

* j5 v: f- I$ t/ u9 Rlet max-trade-times 0
0 ~& n$ M2 W/ N* ?0 h* d+ xforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]5 m) X9 i3 _% D( F0 \+ }
let max-trade-money 0
+ a2 a3 B# f* Z- b' ^/ \0 j' aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: E  x! w+ N4 ]& x4 klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  ~3 G6 t% u  U; {$ G
3 m) V! ^; y3 |
* D2 }  o( T7 I5 c. V
get-global-proportion
+ z! v8 v" W+ x. F. P) K, k4 Llet trust-value
/ p5 N- C* `" r# y# B# d7 Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ B4 r* y6 ?! D0 b. u+ n6 v) r
if(trust-value > trade-trust-value)
1 h" j& n$ Q) n[set trust-ok true]
$ P: o  v( m0 [. ]9 P( m# O2 i" pend0 H7 q9 f) X" K2 H8 h* P) [
' `: f3 x  f" M7 M
to get-global-proportion- v2 v# s$ ^& ]) w/ E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
9 Z5 ^7 O% W1 V: @[set global-proportion 0]8 d0 c9 M6 ~. p; K
[let i 0
, |# E( x6 p6 `/ tlet sum-money 08 d' O4 L+ d7 U9 s
while[ i < people]
' |% J8 @9 I2 i6 Q* q8 p6 c[9 p4 s: ^/ S  r: s' B; S2 E. L: O7 x
if( length (item i
# u' x. A) Y/ l[trade-record-all] of customer) > 3 )
9 S6 Z2 i1 u$ d8 q( ]3 ^
[
! @% u5 j4 b% t8 qset sum-money (sum-money + item 2(item i [trade-record-all] of myself))# {  y/ s+ E) N+ k8 T
]% ]  O/ e5 V4 X' J" d0 j' l2 ]5 o9 W
]
2 z$ r* F) ?, t8 p- jlet j 04 w' ]+ c/ Y5 e3 ^6 u8 M$ `8 }
let note 0
& o& Y5 k0 Y5 ]. k4 |while[ j < people]( S, ?; l) z0 ]: T! y  \' d
[# V1 f: ?8 S! L4 A/ M& S( ~
if( length (item i
4 G3 [2 |! x0 V1 P4 x+ J/ ~[trade-record-all] of customer) > 3 )

+ Z9 _  D/ T2 y# [0 @# [[
% ]* e6 J  ^( nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# l( }& t& c' \4 t2 [9 r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 i; U" V: ]9 G8 t, l9 G9 [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
- f. P! j" Z7 c/ s) r9 W]
) A0 S9 K7 m6 H  R6 N]" ~! Q- t, K" \/ d# a
set global-proportion note
; `8 O8 \4 j/ T1 r. A]
1 O1 L# C, M  iend; o  Q* F, a8 b# R
' L# \. |, ^( f6 }; x# V- ^
to do-trade% F, i% V4 u. m  G" p" V) O
;;
这个过程实际上是给双方作出评价的过程
8 m5 D; x9 @7 w, J! x  i* wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, M* H6 R, W$ k' {  p0 a8 D  B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 u# Y! h) u- |9 W7 h/ _set trade-record-current lput(timer) trade-record-current1 J. N: B) z' u6 z  S# m5 d
;;
评价时间
8 l" x  N4 G  i1 ]ask myself [
& k) K/ u/ s2 ?8 U( n* Zupdate-local-reputation
3 b0 k6 J; P0 }* M9 Wset trade-record-current lput([local-reputation] of myself) trade-record-current  p9 ~3 ~8 `1 V7 P, U: ]
]
: @9 N# ]! {' M/ N5 `% ~% P# yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 @+ S) T, R8 M' }' r;;
将此次交易的记录加入到trade-record-one4 X1 o( I/ W, {9 e: I! `2 u" X
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 j# V& S# k4 T, U
let note (item 2 trade-record-current )5 N4 h. e, _( i- |
set trade-record-current4 B+ F  z7 ]  g7 k8 {) j
(replace-item 2 trade-record-current (item 3 trade-record-current))

# W9 E6 P  Q- j$ pset trade-record-current
5 a) h. S8 u. t% u1 a1 R- w(replace-item 3 trade-record-current note)
1 c" U0 W; M, _- B, b3 n+ }& }* c- y6 N6 I" U
7 \! T5 f% l: J8 t5 _- Z9 F# f% b
ask customer [" ?9 M( n3 `. s3 V" r5 e4 W
update-local-reputation
" z) y) M2 \8 |0 o3 [% d( C' k5 xset trade-record-current
. Y' |- u, {* [* M& O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- I$ p6 V3 O3 F1 h" t
]
& j1 \# a& x7 j$ C- N
* b! k6 |) H" D
+ t& q4 j  B* i- q6 {5 x
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. M" t! y1 t* x8 a/ p

( Z  z2 q! S. `: Rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), y8 l- `% R4 ?( P
;;
将此次交易的记录加入到customertrade-record-all
9 f2 |# u% ?! }% b: r4 V$ P7 O4 N/ |. Nend5 i  h4 `5 w! Y8 j$ p- Q2 D
3 {1 K! i4 N# f# X
to update-local-reputation# a9 v/ n9 V2 ?6 S. I. h
set [trade-record-one-len] of myself length [trade-record-one] of myself
& t! P' P9 S& E7 g: B( s' M
. p: l3 }: |" Q" h7 _# d. D  k
; w/ g0 ?4 N: X' R' c3 G  _: u;;if [trade-record-one-len] of myself > 3
6 F4 O. R9 ^. k) S' Q
update-neighbor-total9 \% Y+ I9 P& U+ f
;;
更新邻居节点的数目,在此进行- ~& Q8 p" I) w- `4 J/ @6 k" d
let i 39 e% ^4 q" u5 C6 i) N$ a: r
let sum-time 0
' Y! B/ S, g. m3 c: Kwhile[i < [trade-record-one-len] of myself]
1 x; W3 j/ q: x[! Z7 m8 C9 [$ M1 B3 o' S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) ^9 x9 _9 |( v& b
set i+ N" t0 m* U: M% P
( i + 1)
0 o! S9 ?1 Y; e' M3 A
]$ a& v2 P- q/ T* i) J0 ~  e) o
let j 3
: ]2 t2 |; t+ @# N- y$ Blet sum-money 0
$ e9 }; J( K; I. ^5 rwhile[j < [trade-record-one-len] of myself]/ i9 ^5 E2 V. k
[
  x/ r! W, |: h2 I8 ?: _. cset 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 ^4 }8 b" A& N5 s
set j% I0 F2 H/ d6 O) h1 A1 i
( j + 1)

* {* w$ |1 ]) z]
9 a1 _5 u( v) m1 s  H7 \$ K+ alet k 3- d, o; P4 n, {" @
let power 0
  {# G0 @6 x/ j& t2 g  d) N5 k. Clet local 0/ U  m: e3 `8 t5 {
while [k <[trade-record-one-len] of myself]- W6 Z0 H" F9 F
[
# _3 \* [- ^" _+ [" i+ D' X9 P2 @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)
" ^! r/ r; f0 Uset k (k + 1)$ {  Z! k! S6 e' \+ @# k
]
; Y, F8 l& S  I/ n0 Uset [local-reputation] of myself (local)
. n3 f  p/ e! vend
5 c) R9 Y* \  O( ~( t0 ?+ E8 L$ t9 R' Y$ @+ j! M4 j9 m
to update-neighbor-total  E  ]: `, F) ]+ n1 v

$ V) R$ n- }' I  p& n. o& Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 @$ N: A& o) B4 c; I

5 f+ N1 k+ `0 K7 y! |; Y; U
) C; O( B# b5 }" W  G; P% J% U
end
+ O2 L2 F+ Z5 |
8 \  R5 p/ L3 `5 zto update-credibility-ijl
/ d. `6 S- U5 l; j
8 [) j/ N9 W7 q;;
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。
2 C! n4 N8 e6 M6 S) ?6 ~let l 0
2 p* x* @/ `4 S! H7 u- }1 |; Gwhile[ l < people ]6 }3 _' X  x$ |* N, ^
;;
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8 @: y4 [3 S& O: {$ u$ g
[
0 t6 L% N: d2 y" m+ I) ?6 mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 T. A7 W/ x4 h- eif (trade-record-one-j-l-len > 3)! b5 r: Z: n( O0 O
[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
1 J3 P0 a6 |+ ?, Nlet i 3
3 y2 E& I/ C3 x& x2 U& n/ }let sum-time 0$ O- ~8 a+ q/ v  r& w1 A
while[i < trade-record-one-len]- [* [) ^% j9 q7 X# f& Y6 x# N- |' D
[& h0 t( O1 r0 e& {" V$ \4 \8 i6 \  s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ x7 F9 N: r% l) h
set i! s/ Q+ {+ r! v5 u+ x* l
( i + 1)

" X  U* r+ {* B]  M/ N# Z0 Q3 e( ]3 @9 Z' ^
let credibility-i-j-l 0
$ c# O$ x! p, z& v" M;;i
评价(jjl的评价)
1 U: q! T5 f9 g5 \' [. }let j 3
( M  n& ^$ k# g& A) `8 alet k 4
3 D( ^4 ^6 M; c1 ewhile[j < trade-record-one-len]
" Z. X' k7 P9 ^1 k+ h' L% q[2 V" Q  k' _5 b6 ?9 |
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1 X/ d) }8 f: U3 w( P( T5 v2 V* @1 t
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time). ~) Z# X& c# D  D9 w
set j8 Z/ P( u# |+ j
( j + 1)
& G6 h3 X1 D) o' Y/ @; |
]3 g" G) _0 p- f2 _
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))8 e6 _4 }+ Y) B' _) p1 M9 M) B7 h

0 |; S& F. Z2 h" w
6 B# g2 \# R6 U6 r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# Z' d7 m+ v; g) ]' C
;;
及时更新il的评价质量的评价) R, ]% ~* @* q6 t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, z/ j; V! r7 K( Uset l (l + 1)
5 Q# I* w4 X( K) G; q3 {0 @]
- ]! ]9 Q9 u' G+ Zend  j+ y9 p. o2 R/ I1 K
- {. ]3 h: [" e! {
to update-credibility-list: s8 J% U9 |9 }( w: Z# {
let i 0& `; R1 w- v' E$ b
while[i < people]/ Z8 h5 A9 I5 ~/ [3 h  B
[4 n5 l  x$ q* Z4 n' y$ A
let j 0
% x! a+ x3 t! B4 rlet note 0
" F( y, M  u$ t9 C4 llet k 0: ]! k) {& H6 L' S" m  v
;;
计作出过评价的邻居节点的数目
9 F9 ]$ U& t% o7 z. e3 N4 Ewhile[j < people]/ t& L4 M  @0 |2 _
[
; A/ m4 w4 d$ xif (item j( [credibility] of turtle (i + 1)) != -1)
, \- U! m) i3 @$ P: X3 Q;;
判断是否给本turtle的评价质量做出过评价的节点" y/ R% F! g# m$ o! n% Q( S, K
[set note (note + item j ([credibility]of turtle (i + 1)))
# [. A% F# k4 J7 z% `;;*(exp (-(people - 2)))/(people - 2))]
$ @# U8 X2 y* {: {5 E& A
set k (k + 1)* d3 q7 g/ Z8 k* l) P% }1 N
]
; h+ f- ]! v1 e2 r1 u' `/ j4 Eset j (j + 1)" L# O7 ?3 b+ H: b6 B
]
& {% o) d3 B# z& v  j4 E) b+ d. O3 uset note (note *(exp (- (1 / k)))/ k)
! v' I2 u3 z, B- G/ B  nset credibility-list (replace-item i credibility-list note)
4 y& a2 A$ O1 S* Dset i (i + 1)2 z( |8 ]0 R, [* i2 J5 [6 C( N  b
]$ B, k' k$ z( V7 \# K9 \% \
end, D+ S! A7 d+ j
% R/ q1 C! i1 a7 l, p" d, Q- Q
to update-global-reputation-list5 L/ @9 H, ^# n. f
let j 0
- S, {+ S4 Z& R2 bwhile[j < people]
4 _; T, m1 m. f8 v% b[" x4 t6 p0 x! H1 l1 `  y
let new 0
7 Y4 u& \  n  c& b;;
暂存新的一个全局声誉
1 J" }: a) N, X6 glet i 0
% B; u. [# V* Llet sum-money 08 d. q! b$ U. Q* d3 ^% k) v4 k$ {
let credibility-money 0# }! |3 d5 @' X. q9 G
while [i < people]8 ~/ G4 i; s3 d# ]
[" w! Q1 G6 |2 J2 E, K
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  e$ V/ B4 c1 b8 \4 `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) R! R; i" h4 s0 ^8 G( I* \3 S/ v
set i (i + 1)
  o' {7 y# t9 I  i2 f6 k; U" Q]- X9 t' I& p5 h/ W* ^
let k 0" }. v8 e. P  G! V$ V& y2 v( x* h
let new1 0
, c) P& e5 F9 [* }while [k < people]
3 Z0 y9 n* V2 ]! `& r) W! W, e4 A[
" x1 s2 j6 |' p& vset 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)3 s( S) M, z: k) A8 j
set k (k + 1)- E: `: _; T" U: d! l- c
]7 A  W& k4 W" ?1 w: Y: u6 d
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- m( p, L9 E1 U: [; y6 Tset global-reputation-list (replace-item j global-reputation-list new)- s, Q* [9 l1 Y1 L
set j (j + 1)  f  M* _, k2 k& c. f! C$ H# x
]
, g' p' ~. L: c- z, T7 Tend
* b0 d$ f8 J1 Q9 k+ y" s, H9 Q' s! j$ f! s9 T3 `

0 w0 e. j% Y, I) C7 ]8 f8 @; @" F0 g/ N8 L/ y+ t2 L  h
to get-color2 m7 G& ]6 Z8 H8 k7 z! x( O7 i

/ r' c1 I( C6 `7 w# hset color blue

  H) ~. O7 r8 S0 ^end
9 u) R; o6 |$ I+ Q$ r2 N% a
: v% A& C( [; S( sto poll-class! _* V9 J$ i* k
end
+ {  ]* ^. J' f/ b6 H
% m: B# Y( W# y* z6 ]7 Hto setup-plot1$ ^1 X/ ^5 W+ Q/ I6 z8 H1 s
# p+ h4 d$ M5 B" D# p, ]' U# c
set-current-plot "Trends-of-Local-reputation"
6 g5 \' d* I4 l2 ?4 l2 V: @
1 T4 b3 o' g2 j; X( Z' [0 h
set-plot-x-range 0 xmax

7 T7 B/ K; N) l
" l4 ^0 w" o4 b8 }4 D( T- A3 [6 Sset-plot-y-range 0.0 ymax
! t: f( h/ c: C% a: _2 _* Z
end
2 _4 d7 {+ `, J' g: W/ j
6 \# a9 z. @4 Pto setup-plot2
6 e4 D( O* g- u5 ^
/ b; F* j5 G' q/ Uset-current-plot "Trends-of-global-reputation"

7 y( F' Q6 ^% D: |
7 F. ^. _  q6 V) ^' ~* I& \* i/ Qset-plot-x-range 0 xmax

: t* f  @3 k' n; Y' g0 J, t
2 Q4 i! o" t: Q! r/ A3 T) Hset-plot-y-range 0.0 ymax

% x- K" m: E# G# F* _end4 t+ M1 O0 a% m6 C( _, Y" s
5 X8 Z3 C) ^" W. w9 @5 _, m
to setup-plot3; z6 B# Z6 Z$ n6 n  b2 N5 b
5 T5 k+ k$ \4 T' i/ t" j  Q
set-current-plot "Trends-of-credibility"

2 u$ g( {: I  V
) F: N, y- C1 p+ Hset-plot-x-range 0 xmax
" t( }* C3 J' \  G* @5 g- e
5 c- d* Q: _" Z& h' n6 U0 f. S5 U
set-plot-y-range 0.0 ymax
" J3 `% }, D, w* v, y3 ]$ Y1 B
end
  O" J& C: z: l8 Z9 d3 Y' [
. j4 H& Z! _$ c; {8 yto do-plots# U6 {! ?5 V. l" y. J6 O3 d
set-current-plot "Trends-of-Local-reputation"
. \5 ?0 |6 @/ z0 r- q) oset-current-plot-pen "Honest service"
8 a( D8 {+ X; y' xend% i% F" w, B- N# E
0 R3 q& z: h% V+ Q1 b: L8 D+ M
[ 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.8 A: r/ m& @- G4 f2 g

( l& E: w- Q; K2 H9 U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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