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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
3 N3 H/ K* n4 A5 wto do-business   f- ^+ ?1 L/ G
rt random 360
. [1 U% U2 O" Z fd 1
; m' r; }9 [6 }7 w ifelse(other turtles-here != nobody)[
% Z' S0 Q. n  }( j" w   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.  L( P5 L' t" R2 b
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 D. }& M- C& v, m8 i8 ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  I% f) ]: @6 L, T5 H8 J$ N8 B# L
   set [trade-record-one-len] of self length [trade-record-one] of self
/ l& S- F" J7 @4 U8 |1 l. S   set trade-record-current( list (timer) (random money-upper-limit))
3 p/ D* r. S& ~) c% ^5 j0 o7 u2 i8 m  Q4 h- T( M3 I) c! o* {
问题的提示如下:; Y3 N2 ~3 l+ y, h3 _
% @5 b. b# q+ Q  @: Q+ v
error while turtle 50 running OF in procedure DO-BUSINESS
" o0 m* `0 D3 v. x  called by procedure GO
3 ^  d' s; |# ~; J, Q* u2 N: iOF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 B( X8 ~$ S. T" x: }! `$ f
(halted running of go)
- Z8 [; d& n4 O) H7 P, o9 d. l+ j8 n, u
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~~
) L2 D' y# U7 O- u. j9 J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. g! k# B4 H; I) b
globals[& l) ]5 w$ J1 O/ f: w# `. m& p
xmax
* u. {, \, V7 q, t# n$ N* i% \ymax
+ L4 O" c, u& A; eglobal-reputation-list# r# O5 k$ E6 u" O: G
: H4 D/ I) U! Z- B' R/ p
;;
每一个turtle的全局声誉都存在此LIST
1 r7 b3 D* S4 Ecredibility-list
1 ?3 O2 _) d( L, @, L6 e) P0 O;;
每一个turtle的评价可信度2 i$ G% J# i, Z. t9 o9 Y
honest-service2 ]% x3 x" O2 w; d! }& ^
unhonest-service
$ F/ z: j3 W  @- h& _7 Z! boscillation. n( }+ z- n9 c% w1 A- i# `% W: s% Q. r
rand-dynamic+ Y" Q# X! Z- X6 ~3 h- g' X+ J
]/ x8 e* T3 B( C4 j+ J& z. Z$ d$ V
+ A' J& ^6 B9 `1 o- V% ^- q
turtles-own[
7 U- g" D& x7 }# F; Ptrade-record-all- M( ]& W& C) E# M# e: B8 b  M5 F: a
;;a list of lists,
trade-record-one组成3 _" j: C* Y3 `: N* q  Y: K
trade-record-one
  d% V6 y# w, Z; L/ s' D;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  H+ ]" g1 p, y* z9 S1 T
; Q; J: w: R2 \, W;;[
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]]1 h, J2 a, |5 r4 n( v" X+ y& S
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]
( c8 g4 e* g* d0 T/ J' a  l7 jcredibility-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- `: e! l5 y" b- r$ v
neighbor-total
) |  @1 C! p2 a! X;;
记录该turtle的邻居节点的数目
9 D6 [/ I% P* Q& s- strade-time+ H2 T6 s; w8 |- w
;;
当前发生交易的turtle的交易时间! U- K! J( t+ j8 u/ B  x- Z. `% q' |
appraise-give, z- r5 n( v. f- N! f9 m, O
;;
当前发生交易时给出的评价
% U. Q: ^) ]" X% T( e- H( @appraise-receive
3 x+ n: F0 Z8 G7 P$ V;;
当前发生交易时收到的评价/ f' H0 |: d# H1 i0 W' y$ Q9 K2 |
appraise-time( L6 ^9 p7 ]3 c
;;
当前发生交易时的评价时间; M1 b. F6 M' G
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
; y# z) l8 r3 B/ p# p* T$ ltrade-times-total  q5 o$ H8 z' l! {$ V9 F
;;
与当前turtle的交易总次数
7 M$ Z& Q( I  x) D) [& jtrade-money-total3 ?. J! j; p! K" W1 D+ C
;;
与当前turtle的交易总金额8 k5 z  T4 L  D+ H" H; W, G7 X- ~
local-reputation
; }" }& p2 l- nglobal-reputation& y; u" |) s3 m/ X
credibility
  i8 A1 X" D: G  b;;
评价可信度,每次交易后都需要更新+ o3 s4 f' S9 k& e# a
credibility-all4 X2 T# j  {0 W4 t/ V5 }
;;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
* b* l. X( S, `; w+ \
6 Q4 C4 h, a. A, ]' x;;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/ h7 d4 x" t' n( w! E
credibility-one
& [7 z2 s! D; p. P;;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/ V- g9 t7 s* Z/ y$ k9 B7 R* s* n
global-proportion! s3 c7 h, T' g% R+ C
customer
$ v: J$ Z6 c* k$ R: w3 Ycustomer-no" b2 R; `- s9 ]1 w
trust-ok
, m9 y+ |) f2 |trade-record-one-len;;trade-record-one的长度
+ Q7 s5 P$ W2 W/ @; a]
( I9 B) k* A: h- }/ G$ J% D
: R& l# N: k1 B4 Y4 j/ E7 V;;setup procedure$ s8 ^% c1 w" X1 w, P& \8 O

; B4 h6 o: R& n' c4 d1 Z$ Vto setup( x. m" x. p8 l4 J3 a: W( D

. {' B6 q3 c, g9 j6 f$ M0 ica

" G% F# i6 z! N7 p" E7 g6 K1 S$ u( w2 t, Q3 P" T& ]3 W2 g
initialize-settings

8 W3 B# h; H6 J. v5 g. s( e0 q0 l0 o8 B& Q8 N1 |
crt people [setup-turtles]

5 A1 v' w  C# D& y2 |. f$ E8 ?" b$ T( m- Q4 [& V2 `! ?
reset-timer

' [8 m' H" u# l; V- Z6 \& r0 ~+ [' i* N6 K
6 E+ z2 C1 \4 \1 \: {: F. Zpoll-class

- l. T; {! M: u  ~1 g8 D5 F3 ~# z5 [$ f
setup-plots

5 N7 ^' ?( c, V2 @$ C
0 O/ R0 D- F# @& A& Cdo-plots
6 J- e! J4 s. A/ c( G6 J8 T
end4 h8 W9 _) A% k! ]

( a2 [2 w% u5 V4 Yto initialize-settings
) v5 m2 z( I# Y: Z, G* l9 Q) c  {( E8 `0 P0 Z
set global-reputation-list []

2 }2 z9 [4 i1 j& q8 v1 ~3 x
3 _+ c# Z, h; h6 e0 C) J7 Zset credibility-list n-values people [0.5]
% k7 y3 N& j6 A- y! k' ?

7 S5 q1 F/ F- `' Hset honest-service 0
+ ~, P* ]! U/ m3 |+ D1 p- s

$ h3 R7 M( W2 R5 x6 W: Iset unhonest-service 0
: U+ j; j* ^1 C
# k# }1 B! Z* `8 y" l; J' y, o9 @
set oscillation 0
0 V3 {6 O& b1 S

, c4 c; [; S: z( A! ~# k4 Lset rand-dynamic 0

6 n; n+ o9 v7 I) m( Oend% f% j- n1 x7 _9 v! P5 m0 M
% U$ ?8 @/ v4 [* `& P9 w) w
to setup-turtles : [' @8 h7 Z  N  P: ^
set shape "person"7 B( O* M" s, Q" J. a6 n
setxy random-xcor random-ycor
9 F2 R. v7 \$ Lset trade-record-one []/ ]5 x( V' ^1 r  H# k6 F1 \

! @  j5 S& i( K4 O4 P1 q, D/ k* iset trade-record-all n-values people [(list (? + 1) 0 0)]
# [1 [$ d; |& I9 ]! S

# }- h7 o" d6 F# T9 Eset trade-record-current []' w9 m' ]5 \: F# j
set credibility-receive []
# B. P8 z7 I4 P. Oset local-reputation 0.5' G, B) j1 Q9 L
set neighbor-total 0
8 X) f/ }2 ~+ g* B' b0 G( Aset trade-times-total 08 o3 a" ~/ A. H2 m
set trade-money-total 0
! a. L. ]+ ]4 x5 v' f& wset customer nobody
9 q) q8 l3 J# c0 H) [) ^8 dset credibility-all n-values people [creat-credibility]  s: f$ |. H) r) }5 Z0 t
set credibility n-values people [-1]$ ]8 D6 ^" Z4 C
get-color
6 |: x3 K7 o: r5 q, Q; J

) |% L* ]' _  N, _$ Aend
1 t% o- R0 f$ |& M3 l0 O
8 U# `5 R  j: h3 }to-report creat-credibility
" o, d' L- w* l8 {. Lreport n-values people [0.5]9 b7 b- w. }0 [. X
end; {8 Z* L; o# j7 W
, V: C) ]  C/ X
to setup-plots
7 n1 F+ _/ E" |0 C* B2 i9 g
% ^& w5 f/ a* n- c# \+ tset xmax 30
' k' E8 D1 i6 X9 h' e/ i7 I! t8 c
: e' G$ U1 y  x  m  g8 g
set ymax 1.0
2 [; Z' N& a, \5 ~9 P; N
& T3 k& O) M, Y) |* b
clear-all-plots

; ~( E" w* I( c) D& K# r1 X) |; R( G; y! F
setup-plot1
3 u0 J- Q- z; b  ^0 K7 R1 i
$ G- h8 w5 f: \. F
setup-plot2
# n9 ^  j7 Y5 n' j
: G- B4 g' W  w' ^; E3 N
setup-plot3

" q6 ^- x& P# B6 Q  g# Dend( Q9 Y. A6 g, k8 k, ^6 I

5 l* b6 ?# X# k; v5 R% w" c;;run time procedures
4 G% l9 C! O; {7 R7 k' u% g, G# V! L: b- |
to go
7 O: ~+ @* q; O8 c; {  K
: m  K( H" \6 P5 T& vask turtles [do-business]
% {! q! t4 V7 m8 l0 i( Y/ s
end, {1 d9 \, a/ X: d

' H% N4 r( G1 V6 r* Oto do-business : j: E0 [7 p/ r7 f
* O; _: t/ f% P" _( K# L

6 m# A. Q- R& n7 k4 Ert random 360

5 y. H5 f/ W  g5 w  Y- Y4 i+ A) E$ i+ I3 ~, D7 ?; k
fd 1

4 G9 u* D, V+ S0 f  d9 y3 Z/ B/ ?' i; B
ifelse(other turtles-here != nobody)[

  b' A% O& P; m  C! K8 i+ Z# F. Q3 J. P# l  D) A
set customer one-of other turtles-here

+ d$ n; Q) y  E9 w* q% L
4 \% C/ y* J% [7 p1 l+ ~;; set [customer] of customer myself

) H) F7 r# T  K/ E) W) D0 k. ~
  M- G/ G6 O+ l- M$ `/ Rset [trade-record-one] of self item (([who] of customer) - 1)2 a. I2 M: i- H0 r9 I) `6 i) ?
[trade-record-all]of self
5 K( x; X8 d  U- ^9 W) o$ m& ~;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" h0 Y# S7 C; e2 i& m6 U6 L/ c3 u: @9 j! b* l
set [trade-record-one] of customer item (([who] of self) - 1)4 j# i. P' e, F, ^
[trade-record-all]of customer

9 C5 S1 F1 G6 s$ j- a" P
' ]% @' P6 h5 Kset [trade-record-one-len] of self length [trade-record-one] of self

1 Z8 l6 {  G" b' X1 c$ G, D- _: i
, M# o5 Y9 L9 ~/ q, z2 rset trade-record-current( list (timer) (random money-upper-limit))

' G8 C# G2 ^* Q% m1 u, C0 A3 [+ Z7 _
ask self [do-trust]
9 j7 H3 S2 D& q7 [6 ^+ Q9 B;;
先求ij的信任度
4 h/ j* J8 ~; c2 g# k7 y* m' ]4 j9 @6 K# d5 H* w: F1 n) A
if ([trust-ok] of self)  ?2 Q; i, k7 q' d# m
;;
根据ij的信任度来决定是否与j进行交易[8 L! }8 I( J3 U6 q2 F& E) s. Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' S+ k; y5 K$ r3 m
+ H+ ~% M& ~, o! d[

8 ?- ~- D/ j3 J$ v! E: F9 L4 g% \- H8 e+ I2 L) F
do-trade
: d- I2 i/ m6 l- L

  ^" J, L- ?4 F* m1 F* }8 Dupdate-credibility-ijl
; s7 W7 b8 [, [7 \
* t! p: a& t+ g; n' H
update-credibility-list
- }9 B6 w3 b, `1 q  c! f
1 Q# C  J; |- B8 t1 H# C# {* S# B; {
$ L( Q) g/ s( T  n/ X0 z, ]
update-global-reputation-list
2 }2 }! l$ b; p. o3 m+ C3 I
8 W8 `: M. R) t+ s4 S* S: _
poll-class
( ~4 Y4 t1 r/ c6 B0 X

& v) [- y7 c8 O! x, yget-color
% u# C5 D8 e- P  Q: V

+ e( A4 O8 r/ a4 M8 ?]]: S$ ~  R2 F/ A
* ^  D: [$ Z3 e' E6 R5 p
;;
如果所得的信任度满足条件,则进行交易
/ H1 i- t) y6 o+ h' C2 V& ~) l4 C& k
0 v( o$ t" u: v5 |3 N[

' `$ S8 X9 T/ J, l8 }2 ^* {/ v+ K% L4 P. S  e  u
rt random 360

+ Y$ Y, Y5 W, B5 i0 t( ]7 s' a# o0 I! [+ P8 a
fd 1
$ y4 B* R# e# V3 {

0 B7 U, k" {1 A) |* C: ?: T: H; O]

5 ~# [. ]: ~/ o# i* X7 N& c& d/ B2 F0 E  m* M6 \. `
end
4 {% E, p0 R- E3 Q1 Z+ x4 n. a

9 F8 B# Q2 C$ N0 q) A! ^& w( kto do-trust , j1 e) T2 n8 U6 v
set trust-ok False+ h+ i3 C( S* {# [) {2 Y* r

. r- n2 }6 V) e+ w. I: [4 ~& b% G
: O* u6 |8 D% K/ N6 n& D! i! f& U
let max-trade-times 00 _2 o/ c- _! }7 @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 I5 G; H# K( f" A1 X* \' z) m
let max-trade-money 00 A, I: \; z6 A$ _' y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 Q/ ]$ j3 p7 V" W8 z# Q* `) z/ W, ^9 klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& m0 T0 J; j  N3 }! R7 ^
2 C- `; A# E  H' L: X8 g9 [

# _- V: [4 H0 d4 }9 Uget-global-proportion
" ~. D" u" e8 T- |% r8 Jlet trust-value
9 r/ a; x! R' }0 W- A  g/ 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)
" j7 L, f8 b$ Z
if(trust-value > trade-trust-value): |/ [; X! E; j& v
[set trust-ok true]
4 U" ]! n1 q8 Y+ J; T% N% `end4 g* ?  S& `0 V/ [6 g( ]# R
( x1 d/ z8 ^6 a
to get-global-proportion
: Q8 o8 G. j3 J3 Z$ e" Q2 ?. ^ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" l  L4 p: U& B0 W- N: w[set global-proportion 0]& d+ ]1 ^0 `$ [3 R
[let i 0
) M1 Z* }3 t) D/ M9 jlet sum-money 0( T: A' `5 ~2 {. I
while[ i < people]" g) A, v- \1 i6 ]' h1 t0 P6 t' Z4 ]
[5 a" Y: z/ R7 y3 K5 p' ?" `( \* o: x) y
if( length (item i' ?9 ?' i$ E& u5 }$ P; r, x4 _
[trade-record-all] of customer) > 3 )

) f6 l3 C$ [* q" I* G. K[4 `- T9 t( B. P. P# `" n
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, J  Y1 O$ n/ l5 d' [/ y; J: e2 B]
/ `  l* Y, d0 `8 D9 T0 A; k]3 f: j# z9 }- u& e+ s9 a& L8 L. u
let j 0$ O/ `* l( @7 a4 f& M' Q
let note 02 m) F2 Q7 i* d. I8 r
while[ j < people]4 {8 l# n* q( f
[% F% }9 s" N+ ^3 c( [
if( length (item i
$ ^0 @5 t2 T2 n6 b+ d& P[trade-record-all] of customer) > 3 )
% F$ K" ^$ c2 y; z
[( X" b2 Q- I5 W, H6 H; Y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" G* B3 ^# z7 n6 h  v: i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) w9 c4 ?( @$ A$ q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' H4 x/ Q- n0 l. O& C- Z0 F
]
- L# D* O8 |4 m5 \* _]+ R  n3 F6 s4 G* z. v! q* ^4 P9 ~
set global-proportion note4 t" f" j9 j5 \# ]' m( z, `+ ~& R
]
+ k5 m! _1 b# q; e2 |end! U! J& ?' f. B7 r- l

! |+ G+ D0 c' P- l: t# ?7 @( k% Oto do-trade
3 D' @7 Y# O' ];;
这个过程实际上是给双方作出评价的过程0 T: T% u1 ^( ]; \, W
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 W( o4 T, [$ l& Z/ Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- T  _( U$ f: ^0 d6 ~set trade-record-current lput(timer) trade-record-current' l$ M2 J! d0 A& E0 Z) l/ l2 B+ n
;;
评价时间9 S" ]4 D: d, W8 @4 x3 `# Q" L* ]
ask myself [
$ ]$ W" [0 Q7 _update-local-reputation
9 D7 F) [7 h$ i0 R3 zset trade-record-current lput([local-reputation] of myself) trade-record-current0 ^# R/ l" o& L
]
4 A6 g# t9 ^+ N; I, Yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 c. h0 ]; J* |( ]3 ]+ a9 C9 [- \, ]
;;
将此次交易的记录加入到trade-record-one7 _% x! l2 B3 F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! M0 \+ S0 H6 k& w% T
let note (item 2 trade-record-current ); k6 [5 {, ]# L% ?6 @3 t& f
set trade-record-current
* l$ J# O) U; m(replace-item 2 trade-record-current (item 3 trade-record-current))
* P' w; v5 [) C$ A: [/ s/ K/ `
set trade-record-current
5 N6 w( n) H$ T0 _(replace-item 3 trade-record-current note)
; ]! e9 {, N; y7 A( W$ |. f1 @8 [/ g! k& D6 Z0 C

) K; d' d9 J# M- Fask customer [
" Z6 P1 I( X% M6 B# Dupdate-local-reputation
1 {( {0 ?5 D+ w3 Gset trade-record-current. A) K9 t1 ]4 m6 {& I; C& o, p
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ r& z7 ~0 d* A2 X% p  f
]
2 s6 g# R7 F( y* U# b* _( _! s; Y6 P7 I2 D" ~% F% A

! i! X; a6 k2 o4 q& D! Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, E. V/ s) a' T% L

5 ~, l" A4 l! ~, {set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 X$ ]6 S, ~: K! a* c* S" ];;
将此次交易的记录加入到customertrade-record-all" o8 w2 g4 y+ g! e! K& y! M7 f' N
end& U6 j7 s  T% S  z. ~

3 f* l1 ^; ~5 T1 r8 Zto update-local-reputation4 A; V# P) G+ s& t( m6 {7 i
set [trade-record-one-len] of myself length [trade-record-one] of myself
  J$ N( \. J7 e$ j4 O; G4 l! n. K# C6 ^9 k0 G+ k  x
- A: M( T3 @) E* W9 C+ v  e
;;if [trade-record-one-len] of myself > 3
0 k" Z% _2 C+ k* a5 l6 L7 G( c# j
update-neighbor-total
& f/ m0 N4 a; p/ S, ?;;
更新邻居节点的数目,在此进行
- ~" {9 c3 T  ^9 P, _: l, b1 Y- ilet i 3/ K; x9 [* E7 m! I
let sum-time 0/ D* v5 `/ N( V4 L1 n7 W
while[i < [trade-record-one-len] of myself]2 A2 f. N; p$ m: Q( i0 `
[
+ d+ j" @" G% k0 F' z1 ^3 _" c2 Qset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 w7 G; K6 c4 ]: y9 d
set i
; A! f# P- n' `. T6 @( i + 1)
& `5 ~8 @0 Z) o( k& U# S, X9 X
]
. B1 N3 t4 y7 glet j 36 i0 I; ^0 C- h; ?
let sum-money 0
" r) e- ]! G4 t* y+ A! ~- y( Twhile[j < [trade-record-one-len] of myself]  c( o1 U) J4 e% ~- n
[
; G1 B2 J" i7 a# n- x( D7 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)9 ^4 u$ Y' o& d1 f$ K5 l! ^
set j
2 d. v. U1 i$ W- j( j + 1)
: H* |( ~+ i' p, }" v
]9 b# G7 S# h$ N/ z
let k 3
9 E: o$ u% O, [5 N9 llet power 0
5 D0 P. d+ R6 J8 p! \let local 0
- N% L6 a# \' s- \& C0 h  f+ mwhile [k <[trade-record-one-len] of myself]
0 _( g! t" h9 [[
/ t0 F' u6 O0 V3 i0 E; i& s# Nset 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)
+ X7 O  F  g; Sset k (k + 1)
' k$ [5 V$ Q( Y! \6 W& _]; y+ P0 a. b+ H) T* ]' q
set [local-reputation] of myself (local)' l9 q3 w& X5 r7 R7 g
end
9 i1 s% \. U# T. o8 j$ G
( u! y6 u$ S5 ^$ C! \to update-neighbor-total7 K% p$ t' v  A+ W: y

( s" Q6 \% V$ yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! [( i4 J6 L+ ^  f
, ]6 W0 A5 K; m/ v  b' ]" U, Q
0 y* B0 M' W# f
end
' r; \0 [* P- g0 f9 b  R; n# s% ~2 V% _) t
to update-credibility-ijl / V; f; C% j# r; u! x" v

3 D" ~0 }( O7 N1 |; }1 w5 {- N;;
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。( W8 }8 q5 N4 {- h0 o1 E1 N
let l 0
, |6 k$ d# t9 ^  S/ i; }while[ l < people ]
, x1 N- G( o/ q: r5 @; Y" b' O;;
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6 Q/ f' a6 P; Y4 q( d
[
" B% z1 u4 V3 `; `9 |! f' tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 q+ T( I5 s# G! S8 D( Wif (trade-record-one-j-l-len > 3)
% q( Z) M+ r% E7 H[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
$ P7 v) V. c4 W4 Ulet i 3  ]" p, {. G( I" X  ^9 ]( f5 x
let sum-time 0$ c5 ^8 b8 G, w  z
while[i < trade-record-one-len]
! k% r4 \5 K' k% L, E: G[6 z6 B) N8 m4 d1 n9 C% Y' C
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 y$ U" F! |# _2 V7 I) pset i. A- W9 \1 \- e" c3 U7 }$ c8 w6 h
( i + 1)

5 l4 d8 i6 u3 R]
1 `% I2 ]" \# J2 klet credibility-i-j-l 0
; f& R4 Y0 b( i% V9 p;;i
评价(jjl的评价)
) }1 B. l0 ?6 _+ N" ~, j$ ?. w- _* |let j 3
2 e, n3 A! Z! J/ T1 a  Y( I$ R9 Zlet k 4% s% f5 D- Y1 h1 @
while[j < trade-record-one-len]
( |" [1 y" Y6 a0 H1 E8 j, A[
0 Q# m" _( |" `- i/ u: E& c5 e' awhile [((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! K. F7 h, V6 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)
- M8 C# h; v% I, x8 t7 Zset j. X) a$ r6 K% H+ K9 @% Y! c
( j + 1)

: k8 T+ q- `+ {- S6 j- |]. l5 m: I  D% j
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 ))
/ j/ a8 a+ y, d: Z4 ?$ i* K# u- g; T

  R4 z2 j. v- D# ~  M3 vlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))! T) L( Z+ G7 n  F
;;
及时更新il的评价质量的评价& o; }) c) E  c* w: @; T( S# {9 j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 S! e: B( \0 |1 T0 p
set l (l + 1)
2 b& l1 X8 L. s0 P]
& t3 C* x4 u0 i4 Uend$ n8 o' a, a5 X8 \) w6 ?

2 s) ?, m( U9 g& jto update-credibility-list% g4 u; O1 l; A2 |/ E$ d& u
let i 0
* d  f9 L! L* Owhile[i < people]2 S( r8 Z1 M  }$ Z1 x( Z. q; H
[
) [: C+ X1 x( ^let j 0
! k) }5 K0 e6 P+ f( {8 f4 W' }9 ylet note 0) i7 B5 ^: U. g" R3 R2 ]9 J
let k 0' t* n! v, l" l  ]" D
;;
计作出过评价的邻居节点的数目
& J# ?2 R5 J7 c# d9 Y# z( `while[j < people]
' U: o1 h& [2 w0 W[7 O) ^1 Y& P% E( g6 q5 U- y
if (item j( [credibility] of turtle (i + 1)) != -1)$ K  [7 q! f6 E4 t% Z, `+ t
;;
判断是否给本turtle的评价质量做出过评价的节点
+ v- v  [) X) L7 n% p- l4 ?[set note (note + item j ([credibility]of turtle (i + 1))). q" ~- h. C6 |( Y0 ]( A
;;*(exp (-(people - 2)))/(people - 2))]

- U; H* T9 z8 M+ U: w5 t3 ^3 Tset k (k + 1)% k7 e; j6 q; S% r  L1 n* V1 T
]
. p; S( m- G8 d3 Z* c: yset j (j + 1)
; A8 O4 N7 l/ r. P, R7 k3 S]
6 l/ \6 x! S9 b+ J0 Gset note (note *(exp (- (1 / k)))/ k)( y; |. @1 }: N8 J5 x
set credibility-list (replace-item i credibility-list note)
( F  D- b% @% Zset i (i + 1), I) Z0 D7 i( G. x5 E' Q9 g* Z
]3 T- u7 I" u2 R7 D, G
end2 l' c, L' a" m5 x) Y

9 f. t& v, m5 m. W  N% sto update-global-reputation-list( ?! x( S2 e/ @+ Y
let j 03 e+ Z- K. q& R
while[j < people]
! s8 O) k, z' v$ F4 N  |; E) F[9 W& V; k0 n6 h& r' Y" Y
let new 0, z  L; i( J: S5 ?3 T- ~8 D
;;
暂存新的一个全局声誉
4 h, C) ]4 [/ c1 T8 w( S3 flet i 0
; F& r$ g3 i1 y5 P4 `8 hlet sum-money 0
. N" e( N. I4 H3 H; [' V$ \let credibility-money 0
1 X- p+ y5 q9 |while [i < people]
1 G" ~9 A+ d1 _5 [2 y[2 J* ~; x% R# n" K4 C* o  Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! P% N" b$ L. i2 i) Wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) |% _8 s0 n6 C; _( d
set i (i + 1)' c* F2 u( P9 K4 [# E3 W
]
6 a! E; Q* }8 T' ^1 ~let k 0
; L% q4 T- x* A& Klet new1 0# ^' O; w& k; t0 f
while [k < people]2 [) v- i8 c$ v( }2 ?- i
[
- y( j1 s8 h% T, N$ kset 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)
& w! o5 g. f% _. v/ H1 Gset k (k + 1)
5 ^# [$ s6 e1 b( w4 I, V]2 f: I7 M- W: i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: g5 O  A: Z% I! hset global-reputation-list (replace-item j global-reputation-list new)
0 l6 t6 Q( n' [2 V8 t- U4 w! Sset j (j + 1)
( S  g) N" f! T+ Z! e1 }; ^]
7 y3 K& t# n+ m' m2 j  G2 K5 Y2 I$ ~end/ s$ `; L  z4 v

# w7 X8 Z' l9 P: M4 g# k5 T0 [% e" ^" F2 n  t3 B
7 N4 L2 L6 K# M  i
to get-color) v7 ^7 z- ]3 }" B% V* V- ?
6 {' f( n4 K7 l6 O/ Y; [$ d
set color blue

0 [: l* z# h, [+ }end
# ]! N! z" C6 d5 A+ Z1 u( ~1 @: G& ^/ T; W
to poll-class! S* p  k3 Q( S! T
end- U9 w# d! a  Y2 Q' K

' y' o9 o* C) a0 pto setup-plot11 o" _7 |+ Q8 [0 i  h6 e: x( Z# J
& P$ v5 T, F0 j
set-current-plot "Trends-of-Local-reputation"
8 T: Z- }5 S+ i
+ f/ e6 }# g" b( C
set-plot-x-range 0 xmax
% y0 V+ c2 Q) q; A$ s; Y7 _
9 r7 m0 e& _' I/ A+ M
set-plot-y-range 0.0 ymax
- }! a! j6 u1 N7 q8 B) U& n9 ?- Y
end- P% l& ]9 S" I5 N* b

! A/ F8 k+ z9 M) A+ n/ {to setup-plot2/ t" }4 d$ i- M* j5 R
" s- H- B- d1 Q' f2 C
set-current-plot "Trends-of-global-reputation"

5 p9 d! T+ T3 z; s' S
; Z5 i* Y: X/ ]9 P& yset-plot-x-range 0 xmax

2 u/ I) ]0 X: E0 T1 I& F
5 Y9 P4 U8 s- k$ c3 Hset-plot-y-range 0.0 ymax

* w: y. Z% W; g3 \( zend
! U8 H# a  h$ Z6 i, C: t' C- k) A& \
to setup-plot3
( X$ i0 j, f' l' r8 f) s! N0 w5 |; R+ m% D/ g
set-current-plot "Trends-of-credibility"

  A6 Z. }2 j" S) ]  a6 U* O" s$ U8 k
set-plot-x-range 0 xmax
. X/ k$ v; A, v( a& d

9 P/ n" P2 B( U# O; {+ fset-plot-y-range 0.0 ymax

2 O  X2 ?& _6 Y' uend/ i$ @" c3 y2 V9 r, e

' n; v9 g- z4 S, [to do-plots- _3 I# b& i4 }( J& _+ w9 Q& y
set-current-plot "Trends-of-Local-reputation"3 u6 N7 y& W- I
set-current-plot-pen "Honest service"+ t4 p& E' v/ o( n
end0 y  @4 _* S7 {' ]/ }( ~' |2 C
5 ]# _" {$ `/ z2 D7 Z8 n7 {+ 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.
3 H+ ?8 c$ m: E. X3 r6 L" U9 L& y+ F4 P. V( C
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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