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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:
; V$ D( R+ f3 c" C8 Lto do-business ) {! [+ h3 G6 P/ }
rt random 360
, b0 t$ }6 Y1 q/ X! Y8 N fd 1
' Q& |: X; U+ y( h5 u$ o' }9 p1 | ifelse(other turtles-here != nobody)[: y* v. C, w8 M  [2 ?' z1 k3 d
   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.
% L2 _; P2 t& h2 {5 K  v   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 {6 m; c, |+ _- u" |; a7 O+ W7 E0 U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
" F; y# n, o0 k   set [trade-record-one-len] of self length [trade-record-one] of self
9 x: O, p1 Z' J! T, H" E/ F# }   set trade-record-current( list (timer) (random money-upper-limit))
( z' z5 `" n6 n
; ^1 z+ V; M+ q0 h( N问题的提示如下:  G0 F7 [* a2 z  N/ c

+ Q6 j6 `# Z& _+ x$ [" qerror while turtle 50 running OF in procedure DO-BUSINESS+ H2 a& Q7 x/ m3 N
  called by procedure GO7 Z- p. R- h* L1 D3 m: ~$ ?* s- {# G
OF expected input to be a turtle agentset or turtle but got NOBODY instead.3 Q- z& \- G4 p" l' t6 T2 K, V$ {
(halted running of go)
8 T- d# U) X( m: M: S7 Y. x
* O. U! _$ i, H6 f6 ~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~~* p# i4 F, Z' {$ a0 M" a+ 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2 s$ |2 u/ H0 ~& N8 S
globals[
' m1 i7 A+ s( B  g/ L& G$ kxmax
! i7 _$ a# A) H1 X- L: C- kymax2 j2 [9 l6 T' Q5 r* u6 r$ K% r
global-reputation-list
3 A3 S/ q( c3 |! C$ ~4 V  R- l! z: q3 ~6 s; z  s
;;
每一个turtle的全局声誉都存在此LIST1 ~; [; K1 d) V0 m2 |
credibility-list
7 v( N* k1 `' A: B- q4 k3 Y9 U;;
每一个turtle的评价可信度1 L( W  j0 |, Q" J/ X8 A
honest-service
, Q  _3 e0 E8 J2 Q; kunhonest-service# b2 `0 V9 M* `* S$ ^5 g
oscillation
& k2 N' A7 u6 Z5 Drand-dynamic
( V6 _1 M# A( c( \]
- h. G2 \; t9 l8 Y9 \
! Q% q) g9 `- k! S  S  I& mturtles-own[
: j' k9 r/ w+ Ktrade-record-all' y# w0 J) b  `$ y
;;a list of lists,
trade-record-one组成
$ l6 c3 f; A: r7 `; g- }- v' x, c6 e1 etrade-record-one3 Z* c' r) H) i3 M* [7 M& ^% ^
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ ?0 d" w; \$ b, Z8 b, S
$ N8 d# g8 P* U+ _;;[
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]]0 X0 F, H' _( M5 }; ~8 w
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]
0 I; f0 j" o+ g) ^4 J% E9 icredibility-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list3 k/ U5 H$ }, E' C2 P1 {
neighbor-total' b" t! K9 R6 h0 ^
;;
记录该turtle的邻居节点的数目2 A# q$ |# \! {1 [! ~: z' `# [
trade-time
: a9 H' }7 ~; s0 ?) ]0 d;;
当前发生交易的turtle的交易时间  w6 d3 w7 F0 \1 W+ n+ I4 R9 u
appraise-give, P: s+ F$ y. Y9 {: n0 |5 D, c3 n
;;
当前发生交易时给出的评价6 q7 L( K7 F8 z+ ~! c6 O' g
appraise-receive: g/ q8 r' |/ f+ R
;;
当前发生交易时收到的评价
! t- D6 {! i7 G8 S) iappraise-time1 c* s4 J  _3 V2 A& G2 b( g* m. c
;;
当前发生交易时的评价时间
4 M" ~" ^! P. t; ?- u0 Z/ Tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
( M. A' M: s8 b8 [trade-times-total. u, y: ~6 P9 G/ U' U5 ^) y: P1 A
;;
与当前turtle的交易总次数! t* |0 j& s  ~0 h& [! `
trade-money-total
, X* m8 X% q7 L; V+ k;;
与当前turtle的交易总金额
2 g& O- d* o) Nlocal-reputation
( {0 t* |, Q& Hglobal-reputation
4 c/ D  s- O  M( X5 X2 D5 }credibility
4 Z  Z3 |2 v* e0 _;;
评价可信度,每次交易后都需要更新/ C9 f, V* w4 K4 r" ~
credibility-all
; s' @6 w9 E2 U" f1 g, e;;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
) u5 R% X& O1 G- C& O6 _
& k/ Y& C7 ?6 O. w8 P" s$ ^1 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
( u! t+ c9 o- _+ `0 z0 a' {  xcredibility-one
* u) Z" q& L5 N  ?, \8 ?- J+ A8 _: Y  z;;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people3 J, _  \. O3 b# q; m: T
global-proportion
# d6 y( v; Y7 [' Fcustomer5 j- B$ P, }/ G, [% i
customer-no2 S" c# O  G: \8 k3 d! L. ?/ }' b
trust-ok
+ O- ~  F, G; B5 [trade-record-one-len;;trade-record-one的长度
" V& @& u9 {" l& m; N  {5 }7 f]$ Z9 ]5 \' N. ]' N1 p5 s# E
9 ~- @) P, H3 V% E
;;setup procedure+ ~; `. D' I1 \  j; s3 T& l& d* T
; E3 g+ V4 I5 [3 `. L
to setup+ o; }, S" A7 U# P1 H
( C/ C+ t; s% k; F; L* u
ca

6 v! O! q4 ?- X- X# T6 d  a/ Z; m% i4 b7 k% \
initialize-settings

/ e& n& B5 I& D% [7 Y1 i1 d- M+ a+ k' T3 w
crt people [setup-turtles]
: G6 ?" a; \0 I+ F5 _

) {/ }! }6 B2 B# c, treset-timer
, e/ C. B: o0 l( X; i

* Z  M, J: U( w$ dpoll-class
) B( F; u. K* K  I% h
  A2 Q8 }2 B  t2 y' X- k; i
setup-plots

& k7 H$ {  e* L
) p* D& y0 C6 {, hdo-plots
0 ?# w' r+ `+ r: j
end
' z  p$ R- I& A# E3 o) Y
" \9 a. O! H6 L& G# y; i, X' l4 Cto initialize-settings; T8 A  \5 G1 z- ?. y
1 K/ e/ `: w% D+ Q0 h. G3 o" _
set global-reputation-list []

  i% v. V6 j! p- Q7 O
: W. G/ |+ `5 `set credibility-list n-values people [0.5]

  m! \8 ~# C+ {% _5 L, ?& r; c7 ~  D5 }3 V. F4 k. F, r" Q
set honest-service 0

8 q7 |  c* O0 `8 Z  S6 P( T# p3 j* [
set unhonest-service 0

3 V3 G" N5 S, ~+ B3 r# p, B3 ~/ k# _4 f" \
set oscillation 0

; ]/ o. g2 ~  \" Z
7 E) }; x2 K9 D, o6 a) B5 [set rand-dynamic 0

5 M$ o7 F. u! ^2 }end8 I; }, {' l$ i

" V+ |8 i; U& D. l; ^" V. E/ k9 wto setup-turtles 6 Y" [- r# |7 b
set shape "person"
% d1 L, v9 Y- A* Esetxy random-xcor random-ycor  a, g2 l: l4 B. e' b8 p+ n* f
set trade-record-one []
+ ?9 j" ]  ~2 Y, F9 Y8 |
! n' j' b% `# X" O. ?6 q1 f8 }/ T
set trade-record-all n-values people [(list (? + 1) 0 0)] ' c& _9 R. m$ r; T! ^8 h
4 N) x+ V* ]5 b5 t, s
set trade-record-current []( i/ T% C$ l! n4 C
set credibility-receive []
: y' Q) u- i% ?$ Aset local-reputation 0.5
$ \) y9 u1 ~( Y) O5 {1 @2 O& H) Kset neighbor-total 04 K& W( A9 e2 ]4 Y+ @
set trade-times-total 0) ~& A6 B6 @- W7 U
set trade-money-total 01 x, I# I# c  B( K
set customer nobody
. v7 p8 g: ~+ e* g  Aset credibility-all n-values people [creat-credibility]
5 E* K- k; F7 Z* Sset credibility n-values people [-1]
% G! a  G# [. M7 q- G1 ?' e5 Xget-color
& d: Z: G3 f* F! y0 ?* B
" z! D/ t. d( M' l$ s
end$ s# m+ E! Z  \" X

8 d! Y$ o# X; e( d# ?to-report creat-credibility
; S+ X& n& v) L3 ]report n-values people [0.5]
8 b# M# }& I- }! d/ Wend
( V0 r2 ]3 o2 e& i* M" A/ G: Y% d5 L" z, @* ~9 }
to setup-plots% E# n1 f$ f1 `$ x" m. J

' W/ D4 [% y: _" w' @7 _set xmax 30
, h6 t1 o# T6 v" p) d

- k# g2 M! K) @9 V! N. E8 ^set ymax 1.0
" C8 d" f9 q6 M
- B) L3 H! t: v1 a, J
clear-all-plots

& z) e6 J8 h+ l" V6 J
5 Y/ }  v* x% ?( H  U3 o- `! Lsetup-plot1
$ g7 X! i# w* A6 V

4 C5 R) o$ r2 p  a1 n5 w9 E) esetup-plot2

& [$ H# @! `% G6 G  _" k, B
- i/ N. ^; r& Rsetup-plot3
! u: I* q. U; V8 w, h
end% L( S+ l' N/ w9 e% f

0 S9 _( O; m9 s0 N;;run time procedures/ W: i3 U8 Q1 j1 r, E

- @* G0 x/ i4 s! k! x" d1 {/ Xto go
/ x* z. _3 U" Z) r4 `
" v+ [* [0 \2 @8 L$ \6 b; W4 ?8 Bask turtles [do-business]
. ~$ u% g- h1 l& N. U6 Y3 z2 n: b- d
end
7 z* d2 v+ j* r8 ~6 U, R
2 S) F1 D7 e5 I9 t" Y; [to do-business
. T& I5 g0 `6 P1 [9 J5 d  q' f) A

" F0 V% p4 ~$ A+ f+ U  e8 f* I4 p9 I4 |6 ^7 R9 @0 O1 r' p5 S
rt random 360

( c2 o+ M& U1 i7 B
; k! j/ \  i6 `% Ifd 1
3 K2 J2 X' m/ P6 q5 l

" J  T7 p& P( @$ j8 X* S. p9 gifelse(other turtles-here != nobody)[
" q4 W% m/ a7 \9 ^- m) @
. w4 w% E" s) R: `) G/ z
set customer one-of other turtles-here

7 n) q$ f: z* y
( K7 P3 ]) h: d8 q/ \2 U/ _& V% @;; set [customer] of customer myself

: h; _% J, ^1 a6 K$ f3 V. v
0 v& Y- h" j- K7 L0 x- _set [trade-record-one] of self item (([who] of customer) - 1)% a/ L+ @- q, A
[trade-record-all]of self
3 h" @: |  k& R" z/ z4 O/ k1 x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 i6 _) H: X1 p& R7 |+ k) a
5 [& I* ^5 W5 a/ b2 a" d" c* Oset [trade-record-one] of customer item (([who] of self) - 1)
& F& V/ ?$ {3 z, p" |3 V% Z[trade-record-all]of customer
3 O( O/ p2 ^$ ?; A) M1 r& k3 I
$ R8 a' t# J. k( G0 F
set [trade-record-one-len] of self length [trade-record-one] of self
$ {- E& h$ {+ @
) X$ f+ M" {9 Z+ r
set trade-record-current( list (timer) (random money-upper-limit))

3 d. y' m8 Y6 l1 |0 O5 I' z
' O* f& c6 C! d  w7 P( ^/ z  S" sask self [do-trust]& H! Z) S4 y7 H8 a; k$ l6 Y/ z
;;
先求ij的信任度
+ t5 r( _1 ]3 ~0 Z% [7 H) z" _
if ([trust-ok] of self)( X+ |  [8 E* L9 H7 K: m  h1 o
;;
根据ij的信任度来决定是否与j进行交易[
% D3 ^# d9 J) _ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 O& W1 j3 z6 J4 \. G- H
" n0 I, E3 l0 y! f& E8 [
[
& b) E7 a# v  ~3 C! d
/ n) j* S0 @7 ?4 Z
do-trade

/ P! I( O( U/ a0 f( v! H4 U$ K$ v7 o) o% g; a
update-credibility-ijl
5 w* f3 a% n! ]9 c& e" C
) a' {" K' ]. s' u
update-credibility-list
- m+ N( o" g& r3 e' J. w/ R* S0 g
" ?; i1 r0 U. k. ?$ B0 c# Z. ]

9 L* T; S. L5 z) c$ e; ?5 Mupdate-global-reputation-list

/ e2 d* y; o7 F7 A! _+ p2 u3 Z' h3 j; r% n& m
poll-class
- K; S3 Z7 r7 e. e

8 w) p+ _, g6 i2 M/ }2 Z9 Aget-color

" f0 T& o# Y0 O: s" u# h. K8 c
- j% F  [3 ^+ F) A3 g0 u; Q( a]]" C8 a; B4 R7 f

5 C9 x$ J1 x& R" C3 W) `9 A;;
如果所得的信任度满足条件,则进行交易. p% c% j& u$ d( L1 f& R

# I- k+ W! a) f: Y[

1 L6 p/ W; I! G& S5 M$ `9 I# ?5 i2 x- F
rt random 360
5 s- W' O( b, j
! [) i1 g* q; u' e2 F: Y5 |
fd 1
% `& P4 ^5 V9 M4 M0 A, E
# B( M  I- U. k% g6 e% ]; U. G
]

+ k1 y. B2 \* S/ `8 \5 g+ C9 W+ `4 [4 e: t) y5 [/ ?5 `
end
4 J9 Z- m6 B1 P

8 S# l* T, }0 T8 ]to do-trust
- f4 `5 H* _9 ~5 `- P/ uset trust-ok False9 V; O7 Z4 ~2 {
+ z( q2 v& l  ]  `
% T2 H& K$ X- S, ~+ L7 `
let max-trade-times 0
; {  ]$ G2 [% j" [8 Y, @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* x* _/ j/ I/ k+ h$ p0 Ylet max-trade-money 0" f6 L* }; B+ R' M
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% E1 F, `) ]3 B* F0 Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 v4 T0 |6 n" U% w+ L) B, e

2 B: x: v5 L  s6 ?. d) D
1 E; _7 {4 B  U2 O7 v, h; s
get-global-proportion& D; v7 Z8 A$ G8 N
let trust-value
7 t' U8 y5 D4 t" |" {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)

, _2 D+ I$ S0 L* k3 P( Lif(trust-value > trade-trust-value)
# u1 w% ]& M' K[set trust-ok true]
5 G2 O4 i, I0 g$ H, D7 nend  ]: O) H# g! e- a  U" s/ \
. R/ i1 H) h: T# m
to get-global-proportion% k1 C" w0 E; m4 B
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. d0 y  E+ ]" M[set global-proportion 0]+ I" H2 P  j* X+ d2 M: y7 y
[let i 0  K5 i, g- J6 g9 }" j
let sum-money 0/ A+ r& p4 A/ N$ b3 V
while[ i < people]
1 B% \6 D2 B% [[
4 |% @7 z$ |. l% zif( length (item i
9 l! `- F: f  f[trade-record-all] of customer) > 3 )

& I- f$ d' g& c: w[
6 O' M  g- C9 f% d3 vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% Z4 g7 l! ~* l
]
# A. n: `- e) O]8 h: Q2 c& p. `: T9 ~' S
let j 0
) I3 J$ H% u% Q1 N0 Flet note 0: F5 x  I6 Q' X+ m& ^( v6 c. [0 d  J; x
while[ j < people]
" D, ]! `& v" G* N9 ^% S* d[( m2 u# u2 c# k  u; w
if( length (item i
4 ~2 h' C: r$ M1 V[trade-record-all] of customer) > 3 )
3 w, v$ W, ]: N# t
[+ G; V, b  \, n
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- r6 c0 W- q( k3 ][set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% K! t# B$ u9 L8 _[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ }+ f% Z  s4 w8 G0 o  J' S! n5 P
]
. m4 l' }* k# s# ]. _]
( [" f6 u2 s0 h& D2 z: ~set global-proportion note
) V7 k* a$ ?+ O  r. G/ X7 X4 D]
  s( F3 ]4 y5 D2 Xend) Z' P, g0 ]' o, ^
! I5 h& U9 d% R, F  ~' [8 v
to do-trade
7 O5 y% V/ @! |: M0 {;;
这个过程实际上是给双方作出评价的过程% W! y0 i( w. b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  R1 m* a$ t) f8 ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 z+ ?& q/ j. X% _
set trade-record-current lput(timer) trade-record-current# _2 |( \/ ~& h: k/ L$ Q
;;
评价时间
" @/ C: F3 T. G1 B% b+ j2 t. ^& Zask myself [
- G9 D; ~; s9 `' `/ B3 Jupdate-local-reputation
) \' R( X/ F: i$ |% \' f* Fset trade-record-current lput([local-reputation] of myself) trade-record-current  ^4 p/ e( [) w. ]: A0 B
]
! s$ o& r( N: C+ Tset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
+ F$ @( f" n9 q6 H;;
将此次交易的记录加入到trade-record-one; R6 c# g+ a, a7 M+ _7 Y  k
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); x1 m$ L. j- k; S6 W* X9 v
let note (item 2 trade-record-current )
3 |- @, {  u1 a9 Fset trade-record-current1 j; g! U( g% I8 W
(replace-item 2 trade-record-current (item 3 trade-record-current))

  C$ u, u) Z+ zset trade-record-current
8 D3 k; x# B/ V% X6 w+ K; ?(replace-item 3 trade-record-current note)% G* e! A' J- Z
8 j* e: L3 F- S  Q0 t

' k  V) T* {' ]  P! Y; j6 Uask customer [
0 J; @% S5 B( vupdate-local-reputation
% f1 J% w/ d2 X" Fset trade-record-current
8 H. _" g! \0 n# W(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: E  I1 C- a6 f]
! |8 }2 i2 h4 r# c$ g6 N# W5 w, V( `/ I* M* \; q
3 D  k- h/ Y8 b5 g, x2 c
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% Y: x0 U& a- }8 X# L) I

3 Y% U* S9 J; W5 l: Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! ]5 ^4 D) p# `9 I& [. E" j
;;
将此次交易的记录加入到customertrade-record-all7 p) c) M; Y/ [# F5 _
end: E; @7 j8 ?1 V- s5 I2 X
0 W& X* t8 k3 s$ K3 w5 [+ M
to update-local-reputation, l! G# C8 V: L4 U% B- E; y
set [trade-record-one-len] of myself length [trade-record-one] of myself
% \( Y: E: H$ c6 \4 U4 i) Q. |# q$ ?( a  X4 w& M$ C( ]
( g  T6 q6 }, v0 p8 r3 ~8 f
;;if [trade-record-one-len] of myself > 3

  J# e! ]% z. l, J- P5 p2 r8 Lupdate-neighbor-total/ X4 j& e2 {; B. x  u
;;
更新邻居节点的数目,在此进行
1 t1 @7 G. P3 v- `let i 37 u4 p9 ^0 x9 s
let sum-time 0) h( y- C: _+ J2 i) h
while[i < [trade-record-one-len] of myself]( U% V/ B0 q( T" F
[
  z! ?$ V2 m7 I; `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& y9 [9 Q: C4 b4 ^set i% B2 a! W" W/ g0 Y/ @( G4 K: L
( i + 1)

$ `) \- q. H% {( P2 t]
3 T& ?7 G; }% w9 S( ?5 llet j 3
* ?2 u+ E9 H$ C4 _let sum-money 0$ E& a' d+ W; p! h) s1 {
while[j < [trade-record-one-len] of myself]
  c, e0 y, P+ \% u+ M[
: k; ]$ X2 C+ A+ Vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. V" E; k$ ~) a$ Z/ y  C3 b' Nset j4 h2 U/ B* t2 Y. [
( j + 1)
- I/ S. Z! Y! D: y1 n5 L
]3 {/ b6 M( r" @; V  v' J- b
let k 38 k% |# r9 v" g& |, }7 A8 u! W4 H
let power 08 ?6 X) x; {8 R) S1 ?/ x0 l
let local 00 x1 N& M4 N1 V6 v  Q+ M+ n6 b3 a
while [k <[trade-record-one-len] of myself]
. @2 I( j; I7 N: b: k[. C& L7 Y+ Y8 l8 ?, H. A
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) 2 y7 `6 |; w6 \$ n5 {3 K# _; h0 H
set k (k + 1)& G, j; j) z" o$ n* Q
]  B# `1 b' q/ G1 n  I' D
set [local-reputation] of myself (local)8 o3 Z9 \8 [4 a; s* V* a/ V! l; p
end
" Z7 p9 G. A9 X! X1 q6 ]" h
' ~- I; _2 \; B% H5 d3 lto update-neighbor-total
4 Q, |( {5 ~% r
# H% \, z! T5 ^' R2 s' q! Uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 R5 N+ }) G# V" s8 V3 K4 w, e
* f9 m% o; H$ n9 v, I5 w) U
7 Z* M; a0 M: A
end! k/ ^: L3 U$ c; E8 j3 U0 V. C

2 M* J* F, ?4 I0 @& j  Bto update-credibility-ijl
  X" n+ N- K! C  E& p! M* o, u$ V
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
% ]3 h6 M1 M7 j9 X+ s8 H! ~. Klet l 0
1 |% Z5 K1 Q9 o0 J, dwhile[ l < people ]1 U* H) Z" C1 H1 D9 U2 V: m) f
;;
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# a# @' n& [- ?4 c' k3 C
[
9 u$ ^2 z- i) }- c9 |) t7 [1 |let trade-record-one-j-l-len length item l ([trade-record-all] of customer). ~% x) U3 D* i9 W8 I5 L
if (trade-record-one-j-l-len > 3)* v# K5 X  M  @% w
[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
' `" O) B& ^! ^) L* w; V. N9 v1 Elet i 3
: {* A, E; S  H0 E) n! y) ?( W) vlet sum-time 0
: S0 z* K) S2 @9 \  P! q" ?while[i < trade-record-one-len]
9 K$ O& n" h; b5 j' v. o5 R+ ][
0 t/ k4 |# G6 z, f6 o! Oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 k( p" q3 ^9 C/ Z! I4 ?' C" G
set i& f6 ]2 X! y+ A6 w' ?
( i + 1)
: D4 j& t! p" o  P! ]8 }
]8 I) y- g2 v8 L
let credibility-i-j-l 0
% s. l" `* m$ h4 k" w;;i
评价(jjl的评价)
# E5 S, c8 d$ N' b2 r/ Rlet j 3! h' M' R1 X( p
let k 42 F" U. b& S1 u
while[j < trade-record-one-len]) p# e8 N. g7 A; H; ]* t' R3 m& ^9 F
[3 H# t# |" ^9 M5 B- a. R
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  J; b$ O7 R( x7 V+ Z& e
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)( j% c6 j* O, Y* O! F/ K( p7 V
set j
4 r6 }# X" {$ c( j + 1)
, j8 h1 o* `# x+ M" R  M
]% X7 o: E& e) B! {8 }, z
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 )); i* O* L0 S0 c0 j# r8 ?) }
9 T+ h' d. D4 e, A/ r, b$ V

* L- m7 |9 S3 [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: b+ n0 b9 x: G; d$ W4 Q/ s* x;;
及时更新il的评价质量的评价
4 Y. |+ s( c6 h, |) kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' G. D3 ^. E- Yset l (l + 1)
! f/ \4 c5 b; R4 J3 Z0 A7 M]1 a" H4 A& s; }/ v
end- `' w( j( R) W; r( X

* C+ S% Y+ R; i- _5 Jto update-credibility-list7 }0 A1 u7 J# q% _' [$ r' l
let i 0
2 i/ Z7 Z. K! P# W: N, fwhile[i < people]
4 J: r+ V  e. F0 F[
! v. ?/ \: M; plet j 0( [4 p# X' \- H& i" _, c- d: Y7 y
let note 0
" u& g( p% }  s8 wlet k 0
- G1 A0 l& W& y;;
计作出过评价的邻居节点的数目
* G6 Q! ~& @9 s3 B# N# Z* \8 swhile[j < people]
1 r# ^- V* m; Z$ O% Q[6 i% c8 `. f8 y8 r3 J
if (item j( [credibility] of turtle (i + 1)) != -1)% O7 A) H3 R: k- }% ]# P
;;
判断是否给本turtle的评价质量做出过评价的节点
( T  g( a# G9 w- V; R- F$ N[set note (note + item j ([credibility]of turtle (i + 1)))! U+ Z" M$ t9 t' k
;;*(exp (-(people - 2)))/(people - 2))]

5 B" H* a9 N( tset k (k + 1)
9 n: N( q" W$ ?) ~8 H" i]
( }( n: I/ T0 m3 j( Aset j (j + 1), @& n+ h" B/ E/ _+ X# g
]) y8 Y, `. t+ ~* b; \! v  r4 \
set note (note *(exp (- (1 / k)))/ k)
" _% |0 W1 [5 u& }1 X- @! Jset credibility-list (replace-item i credibility-list note); X5 e, _$ K' v6 }
set i (i + 1)* P+ o$ v7 g* ?# t
]
# b% x0 w) `: I2 send
* u0 T" y, d3 _. i9 r% J; `# p9 D( y, I# o: G3 H& E7 g9 z
to update-global-reputation-list! [0 y6 D$ H6 T9 b
let j 0- r8 \. q' Q; u$ ?
while[j < people]! T4 k! Y  E) |' J+ M" i
[+ e3 |8 [) L$ n
let new 0
, E. P* m5 c. k+ s;;
暂存新的一个全局声誉
. j! d- F; Q  R2 Dlet i 0
9 h  O* g5 L1 _1 _4 z( Wlet sum-money 0( y: l! p, a" [8 ^1 g! X8 J4 q
let credibility-money 0
' B5 L: |3 a! F, |0 x: gwhile [i < people]4 i+ K+ n9 D# ]9 ^/ _9 @* d
[
6 x* c; x" O/ P) Q) ^/ Xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! f* c3 j- M% w; g: \% _, E& `. e  wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# L; f" R6 x7 X1 }set i (i + 1)
8 i) y$ R# w6 B( h+ o% l]
: v: F* V' R) z! Blet k 0# a6 T% [6 i: M: ^& M/ w4 i, C6 ]% i
let new1 0
4 o5 l% x/ L. x: [" d/ s& Gwhile [k < people]
+ E$ l! q, M4 V5 n: h; ^8 b[
4 j9 o  l  Y8 b$ i  ~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)
# E" s9 F1 B  C$ `6 Lset k (k + 1)
9 Z9 d1 q+ y& U7 u6 w( q/ R]
- K" G* p8 l0 ?1 _# T% n3 mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " B8 X8 B6 |1 H( y' _
set global-reputation-list (replace-item j global-reputation-list new)! C% [" U5 I' d
set j (j + 1)
. z0 f9 M2 Z+ B1 ^2 V]6 U3 E# n9 j+ t5 z* ]" X, B
end
# T3 C% ~3 c8 B1 N/ H
% l# ^+ {  N- r% A: E7 v
+ i4 O5 G) L& Y# M8 r4 x( @
. J$ @, E) R6 f) y+ }to get-color# I1 P4 f- C+ K; |+ k. |

4 Y: }( O0 r- eset color blue
) ]3 B* Y$ g3 ]$ e0 T* l
end
3 Q* G. s; ]" m/ i+ |2 n3 Y9 g/ x, x3 ]
to poll-class" q" p( ^0 `9 u' u( G: H
end
- g. I. D; K3 x2 d2 p
7 O" K- n" g$ p9 uto setup-plot1
  w" q# n- X, K; X& z4 _0 K2 G3 o7 S! F& H& [( h6 T* g# U, i3 m
set-current-plot "Trends-of-Local-reputation"

. a5 [" I2 [+ g  Q: h3 N4 ^, Z- R
& h5 q* _) W( e5 |) Xset-plot-x-range 0 xmax
# N& m1 \2 h+ T" ?. \

4 [# E3 K7 R% s9 N; }set-plot-y-range 0.0 ymax
+ Z( ~' @. |9 l5 Y: D& R  E
end
8 d+ z, g, q0 P; d! F. n  j/ `" c
) B$ q. k# H+ t( I3 i1 xto setup-plot2
' l; I2 a* ~7 }2 V6 W
5 ~* G  y. M/ }0 ^set-current-plot "Trends-of-global-reputation"
' w! H% z4 k5 g: g" k
( E3 g8 w6 Q2 M: i
set-plot-x-range 0 xmax
5 a, [8 P; \3 p& Q  [: ~  T
4 z+ l7 E- @$ X5 N. f
set-plot-y-range 0.0 ymax

( r* V* X* m1 b. V' xend
/ g% ~* G' ~" W% T) A' W9 b. Q3 J# u
to setup-plot3
5 A' k- a% S* H7 g) H8 X
) u* C3 D$ o) Q/ z1 |7 f$ E; ?set-current-plot "Trends-of-credibility"

% d) ^# U+ q- k$ A5 p9 X6 [8 U+ [4 ~! W. M" W7 y2 W
set-plot-x-range 0 xmax

3 d' y! W) T$ g/ D0 j! S" C& u( F& E: q7 C
set-plot-y-range 0.0 ymax

# X( k% H9 ]) g0 x; I4 _+ }4 qend" M' T$ k# J  S

: j2 U# n/ N0 S% O. R$ rto do-plots
  \1 B* f+ f# z$ ?! z8 G7 G) nset-current-plot "Trends-of-Local-reputation"( r, ^# D* r& w
set-current-plot-pen "Honest service"7 ?% O7 Q5 K3 C* U0 S" }/ T
end
, \) p4 N3 ], N# P2 X+ G) ?
/ W7 \7 a# V! {0 P, M, i1 w! D0 Y[ 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.
* A2 U1 H# c- x9 R1 J+ Q+ Z2 ~+ V9 _6 O" {8 i' q. x
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

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

运行不了

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