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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 D: Y" L5 C8 a+ Y. B0 \
to do-business
' X/ }! [1 B+ T4 h$ [ rt random 360
7 x0 G. m2 h9 t. Y fd 1& o/ M' L" X) \" P* e: ^7 u; f
ifelse(other turtles-here != nobody)[! r7 R) p- G* A( P5 s8 c
   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., u) C& Y) L0 L( t8 G' I
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 F2 z" ]8 q) u0 u7 I. N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! Q1 s- b/ t3 ^7 S& x" w  n  r0 l! p   set [trade-record-one-len] of self length [trade-record-one] of self  J2 H/ i: G( i2 S- d6 @( p4 Q
   set trade-record-current( list (timer) (random money-upper-limit))
7 B& j1 v$ K* [$ n1 k2 c. O0 z
0 ~) _% H9 _% ^问题的提示如下:( @) r, B& A) s: p$ O: O8 q

& y; e5 z1 X+ e+ t* ?8 berror while turtle 50 running OF in procedure DO-BUSINESS/ H2 @) O' ]/ D, X8 T# _
  called by procedure GO& }3 e0 D$ t( U/ @
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 L7 w/ g3 y' G
(halted running of go)
  J9 g. q2 K6 J3 ?) I' Z7 |3 k0 p- m, l7 N7 V: I  Y0 s6 p2 Y9 C
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~2 ~/ `9 Z) I% _$ C* X9 Z7 L6 F9 A; Z
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
, j+ K7 c, H. K1 ?& {globals[, ~+ X  \/ i/ O1 f6 d3 j9 ]
xmax, L! R5 w3 I0 V1 g: p# j) N! O+ w0 u
ymax
$ w9 [8 u# q$ ]4 kglobal-reputation-list* O/ C; S% p9 F7 x% W6 R: \

' `, }& d: p. I4 |1 I8 b: `;;
每一个turtle的全局声誉都存在此LIST$ c) {& Y  [) Q' L
credibility-list
9 ~! W5 d( t- [  a2 };;
每一个turtle的评价可信度. d) x8 q+ O. A$ X% u
honest-service8 m$ |* C) h( x5 o  ~7 L! S
unhonest-service
5 m5 I' C4 Z: g$ S; Hoscillation
. F( `# }1 z2 M8 [& r; I! Prand-dynamic( l1 a9 a0 v+ G( Z6 d
]
4 k' D, `( ~& o' O" p% P) V! r# h; a/ [8 q
turtles-own[4 A& V" `7 B9 x
trade-record-all
1 M/ E: ~- ^( M1 l1 s; @- T;;a list of lists,
trade-record-one组成
5 i, k) e$ F: m* W9 C  F4 ntrade-record-one
6 ~1 U- S" o& A% };;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ o  g& m2 v  x& D2 g: L
4 G6 F! B6 y' a: ]# m& u( U3 V
;;[
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]]
3 p- Q% B0 g# b3 n* ~  e( w+ V$ I+ 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]* {8 h! j. c% |$ Z' G1 P1 U4 O
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
$ v; ]' A: B9 |" Hneighbor-total
* B) L7 K. x3 p) S, B1 @;;
记录该turtle的邻居节点的数目
( n  p1 Z0 M0 m- R* l, Gtrade-time
2 h( y) v' e6 R3 K;;
当前发生交易的turtle的交易时间& l" A+ N- m( O. P
appraise-give
; S5 v; d) S* p;;
当前发生交易时给出的评价
( {, g3 Z8 n+ P& f( lappraise-receive$ Z1 {# U# n* M& |; ^5 q
;;
当前发生交易时收到的评价
6 ^0 L* T  |9 ?  p: z$ p0 Pappraise-time
8 s. M. E4 b2 W: c7 G;;
当前发生交易时的评价时间
9 w: i* `: t3 z6 @8 tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
  D0 }; X: t" q( V( L1 T+ Dtrade-times-total% u" e" y# [, U. q
;;
与当前turtle的交易总次数
) {" U- `/ v8 _; {7 t- Ptrade-money-total. N( M9 v3 ~! R' |; c+ V  k
;;
与当前turtle的交易总金额: _9 |0 m( }% B. R
local-reputation
9 N. y& V2 }9 i, [% }9 H4 mglobal-reputation8 X9 y6 A7 X: r: l" c' n8 u2 e* b' k
credibility
1 p, B2 \$ a5 O; l;;
评价可信度,每次交易后都需要更新
$ x' O5 V# X) Q( q$ c. Kcredibility-all
! N+ |& v5 r* |: H;;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& x8 M3 |4 }8 L/ ^' L2 r; n4 q2 h

4 _9 ]1 A# v2 ]/ R) E;;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. b& h' w" P1 B- S
credibility-one5 @$ k. K$ C% L" y: [% E8 ^7 N4 y
;;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people7 Z) S( O" `" p1 V4 `& [
global-proportion
7 g6 L( i5 l% |, X% Y+ E# t+ Z4 S5 Vcustomer
" \3 @8 M1 ^  c: f" v. icustomer-no
. f- y# `( p3 ]! o# l( K5 Ctrust-ok+ e& K' l1 o' Z8 Q! Q+ `. @
trade-record-one-len;;trade-record-one的长度
* H6 `4 r- Z' [/ s; r' Z, X]
- Q9 T, e) u: h6 J- U- W$ v2 ^
1 ~# k+ d' s/ q( }2 z  i% H;;setup procedure
0 ?/ k/ s5 N5 G  ]' v! ?- Q* b
* X7 f: [5 S1 c4 ]" E6 O4 gto setup  g2 j% x6 p3 l! k' `' B, r. L' v0 Y
& `( B3 I* h9 V/ D
ca

& G! m. N& _/ r4 ^) w, v) R) Y
+ Q4 m$ q8 C+ d$ ]; S6 |& q; e, Finitialize-settings

, m$ l/ c! d- ]- i8 |' D9 q/ _3 [0 E3 G3 E/ {* N
crt people [setup-turtles]

0 g4 B5 N" n4 Z
* Z9 ~7 M8 E5 _# l/ b! }$ Y- X& qreset-timer
; _8 W& l1 u6 R4 @. J

; P% T6 k7 p$ S! e/ ?poll-class

2 d- T& b! T* G; U
, |$ z7 O! Y; }4 Usetup-plots
) N+ u  h' R  Y6 @

& W% ]5 V+ B' @+ d' l( ?: @do-plots

5 h' k' ~5 f& B  |. O) |  Gend
" p$ h8 P, y  v6 {
' b) L  [/ m4 K; u& b+ B( A0 Vto initialize-settings; {6 Y9 o4 @7 E* i7 V. m" V! P

, b$ Z! b1 L" Bset global-reputation-list []
0 |0 ^; h/ G, t* H# s; Q6 Z3 o

9 a. L" H+ S; uset credibility-list n-values people [0.5]

( f2 M& z9 X- A1 d0 g/ e1 F( {; T$ G7 n+ ~+ D) a5 d/ Z5 t* F" F; R
set honest-service 0

( }- H5 m8 i: L) D  F; s* u
! ^# I3 z  V* Kset unhonest-service 0

9 l$ }  {0 ]5 k) o* N. |: Y3 z5 Z) g. s5 l! ^) T2 g' ~1 ]& Z* `
set oscillation 0
- Z0 A+ W! \6 v9 {" j$ @: v6 N0 H" m
4 L+ s7 S% @2 x8 y
set rand-dynamic 0

$ F( g) R" D6 e; y1 }* g0 kend
' g$ c0 P* S; \6 ~/ i9 a; h5 I" L0 K1 A# p$ o& \# D3 X& D/ w
to setup-turtles . J' C' N' J* t, c- Z! O
set shape "person"2 ~0 j3 ~7 m2 ]. h3 u6 H0 i
setxy random-xcor random-ycor
7 S, T( e+ y& W' v0 m% c+ Iset trade-record-one []8 Q" I. W+ x" \( [( e
6 W# m. h* S: f7 f+ a& ^
set trade-record-all n-values people [(list (? + 1) 0 0)]
, S7 V$ W* R. b- `( z& \
  U! P+ b# o8 A( s* [* N
set trade-record-current []
" w3 C  u1 u9 f$ l5 Gset credibility-receive []
; d2 c2 P! b5 A8 W) \& Y; iset local-reputation 0.5
+ d" ~( j: R, Y7 M' [set neighbor-total 0- P( P8 U4 d+ }6 x
set trade-times-total 0
# n8 F5 j9 M2 j/ e! Xset trade-money-total 0
$ j+ W( Z, t& z- {) R2 `: s1 Jset customer nobody$ _( F$ Z8 m  X- h0 U9 {5 W
set credibility-all n-values people [creat-credibility]
. B) }/ U( n- V" A2 V! `3 U/ iset credibility n-values people [-1]
0 _7 X3 Q' v; k) P8 O0 M8 Yget-color
1 ~  E/ m6 [2 [1 `. F

  G. ?1 G# P  g" D2 q8 ?end
  x3 P; R3 j  I2 d8 A
( i9 o) K. x% \+ k2 dto-report creat-credibility
/ `( l; H* u0 @/ U% x& e1 \, Zreport n-values people [0.5]; j* e  n2 q! x3 Y
end
) }/ n9 l' u0 M* K( S% y1 k  n% y1 b0 l5 H
to setup-plots
5 M6 y+ \6 ]1 @1 o  `( r
  P& f+ X% y! ~7 Y4 c8 Iset xmax 30

* ~+ L6 C( H. i& h3 F: O; e( e' |; S1 v- J
set ymax 1.0
; d* i: b* y6 U( \* X9 D, S
7 D7 e3 v4 X( w' W& X$ v7 G2 m! v
clear-all-plots

( i+ y9 }8 Z2 D  K6 d! q5 J# U6 @5 ^; X, y2 |$ k) B
setup-plot1
% W! @5 T4 J$ s; I4 `( J

7 S- v7 R) C% G& {2 A$ R# Dsetup-plot2

! `# D3 o2 E2 d8 O3 }
; I3 p. t* b9 P. G& ^, n+ Isetup-plot3
! J/ v  _7 }& \: \! ~4 B+ H
end8 e) x: n2 {" h- g  {8 ~& v( u! V
# {" f% A5 F2 x2 |
;;run time procedures- R( `/ g* [: `- _
" |% k  q# N7 u+ _
to go3 f; J' d) u0 e& Q) U
% F+ n$ m& ]* k5 j; V
ask turtles [do-business]

, P0 I; x, M5 P  oend) J7 r* A7 G3 {+ S4 \+ S2 V$ q% v

0 X8 A) s# Q- }" Q4 \+ _: Kto do-business
3 Q4 X  z& V6 ~
3 |" L; m* J$ m3 ?

9 f, H* H  F6 [* Srt random 360
7 T. z- f' t( n' D6 C+ Y' X& H

- t% h, g' G' _) {% Xfd 1
3 p) V' q$ r  j7 t2 M
7 p6 ?/ r4 m9 L
ifelse(other turtles-here != nobody)[

) X+ J9 k' T( D5 ]% a. i3 |7 U. S
* C6 l4 A$ g) a- }/ Qset customer one-of other turtles-here

7 w8 {2 c0 C3 f& ^  ]9 E! N, h' Y. a# G. ?% e1 ^" u
;; set [customer] of customer myself

( E( c6 ~9 [3 x' ?) E% @5 p6 A/ S: C0 x" Y" B0 M; I, j5 `0 g
set [trade-record-one] of self item (([who] of customer) - 1)! o7 _; m. G$ @
[trade-record-all]of self
- m. S0 g5 M* f8 i2 r8 R;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

9 x& U* Y8 \- Q( [; _/ f
- T8 g* q2 W1 g$ w+ Qset [trade-record-one] of customer item (([who] of self) - 1)
* v5 v% M0 Z: E7 f4 i[trade-record-all]of customer

% I. f* J7 J+ v! X1 ~
# O$ n1 W: f* y( N6 y4 cset [trade-record-one-len] of self length [trade-record-one] of self
8 s6 r6 @  }+ N% r2 A8 h; \
- P# i1 b3 \( R+ N7 V
set trade-record-current( list (timer) (random money-upper-limit))
( X: U; i4 F- ?9 N8 N0 O, N% r4 k- B
2 n) K! ]5 q* S6 g
ask self [do-trust]
3 r6 |; x* e* y" S- b9 U% L- Z5 K) w;;
先求ij的信任度) V: _% M1 \6 X0 S0 a

" ~& f0 R  {, Y, G" {if ([trust-ok] of self)
) A: n# Q9 n3 \;;
根据ij的信任度来决定是否与j进行交易[
" x* {5 u) ^! a! m  K5 M: n. E% wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; h9 ^+ o. L0 k  l' X$ ?

/ a1 F; k+ K" [: q7 G[

3 E8 W5 P4 Y; G( R4 ?: @' D. E# m7 h' ]
do-trade

& l1 U  P& q& @* y; D; l/ G" [4 Y2 w- C) `9 A
update-credibility-ijl
4 C; f" t. M5 B/ D9 W

1 s( B+ l0 i: S/ U2 Iupdate-credibility-list
8 ?9 ^! r' ~3 h# r" J, d  S& k

' K" R  ?% t( P" [. j  J0 O1 ^7 c9 z: s
update-global-reputation-list
: b0 k& _" F1 q
0 S! Q5 U& J. A  s
poll-class

4 }, e8 T' y" I5 n, V
/ a7 t( n% y2 X$ B% H+ q, }' mget-color
/ e. H/ l/ |1 h$ G; \

7 r4 k/ F2 [; A+ Q]]" t7 ^/ ]# ^$ l6 b
! [, p* l7 ?+ v( b' Z
;;
如果所得的信任度满足条件,则进行交易
5 `$ H% j" [# o0 A: |
! S! I# M) k. b! D7 j% _8 u% Y% X[

4 R. O1 h/ L" E' _" U# Z3 W2 Q9 G1 d  J1 ~9 S- b4 p
rt random 360
* q$ d; U. |0 s( P2 a+ M

2 ^' T9 V! p3 i) Rfd 1

+ Y( n. ~8 e: U+ P% r+ F- H* ?; R" h
]

* q6 h' F+ e4 E: S- O8 s- e, M: T9 t! \! N6 }- a
end
; Z  U8 A. a; r; ~+ ]

4 c0 f* n5 n; N9 ~. a  e  I' F! l/ ]to do-trust - K4 n: M* h3 ^/ x8 [8 o
set trust-ok False
) i/ ?% m5 V) ?8 B- N$ {7 C; |& o2 }0 N/ Z- u- e9 g/ C( C# ?! i

$ c+ a  @# `0 z. }5 g4 f, ]let max-trade-times 0) B' A; s/ ?' m& M( i4 X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
: {0 N+ G4 C5 H8 x# _1 llet max-trade-money 0  q$ V4 d# o; ]( s
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% W" q- `7 a5 z& plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
$ z$ l6 _1 K$ n; I: Q+ T8 l5 c( r3 g/ N% r. w( B$ h1 n

; ^2 U+ n! Z* M& c# ?6 Xget-global-proportion) N( e- ?, w8 a: G" A) _
let trust-value4 R, m5 V; N+ H" F
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)
% d7 m  r. ?) m, B  o
if(trust-value > trade-trust-value)
2 H3 V2 G1 S+ ?$ G+ W. Z[set trust-ok true]
2 R& V& D9 e. R: f# f4 Kend
8 y) q' A( c) q( z1 i9 P) j3 j: @  C# X9 M6 k
to get-global-proportion
" \8 p6 z0 b8 ~! l# z8 cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 B! c8 t% J( [[set global-proportion 0]0 b  M3 s! X/ s# g, r; r/ c
[let i 0, N/ T' h' z4 H( W$ M2 Y5 A& R. n; B
let sum-money 09 n$ z4 j7 O# k: V& D6 U+ h
while[ i < people]
0 g$ j. u. p6 d5 D* X- N8 W% n[
3 L* U2 H3 a/ t5 f6 @6 E+ ~if( length (item i
$ j# O* E- `- e- E! t& i! [[trade-record-all] of customer) > 3 )
& }3 q/ A, b: @+ J4 \; {
[) O* ]9 W3 {# q) U* U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ j' g. C  _. S8 T]
/ i) c4 L) b0 D4 Y]% J, S- X* J4 l0 n7 I8 n" J3 s
let j 0, }8 W7 D& M% t
let note 0: p: E- _3 }& V8 m- f6 s; M
while[ j < people]
1 n/ o  z6 x' E# l1 C5 w" T' n[* y  q5 ~, {+ L* h* {/ j
if( length (item i
) _" g9 j& ]! I* q[trade-record-all] of customer) > 3 )

: |* t% }& D3 W$ n' F[4 ^! d; `6 v# h/ ]$ ?
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)0 V1 ?6 e1 x; P, B: `6 S5 t- D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) q( D0 J2 b" W" h
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 A: ]) D2 H; [! f/ U' _]
5 U3 U. ^2 n# z6 p]2 C6 u9 C) C2 R+ j( y4 T& I7 E, E
set global-proportion note
; N6 W9 B5 v: u0 s]
3 I; d2 J  f# _" |! P9 \end1 J, ]) s4 O' \& F; _2 M% w

" v$ v& V, Q$ s; F- Mto do-trade
' A: x4 V& O5 ?6 i. O1 f# b' T;;
这个过程实际上是给双方作出评价的过程) x4 }2 t% i% x& w# y4 @' _+ b( H# `' S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 e2 F; m$ Z3 y' @) ?  t5 ]1 E9 eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ |; U" y: n! [4 T9 p
set trade-record-current lput(timer) trade-record-current9 u0 E0 c) I7 _! e
;;
评价时间; z+ [' g; j! S9 \5 F" P0 a: @
ask myself [
, I* ~( g0 n9 {+ m' Nupdate-local-reputation
2 \/ R& W- F3 v9 I1 t" Yset trade-record-current lput([local-reputation] of myself) trade-record-current
6 l/ r% ?% `( h8 b- N  E2 c' T- E* \]
" `% \) S; W3 {1 T9 Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( R* a& E1 U; U
;;
将此次交易的记录加入到trade-record-one1 ]5 T6 `, m4 p5 ~  k
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! [& y# @3 f2 mlet note (item 2 trade-record-current )- n3 N$ b' Y1 ~* Q
set trade-record-current" d7 o! p  c( b! U7 R3 X
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 ?9 d7 K- u& {2 H. X
set trade-record-current
( t  `- _! j2 D  S4 R* w/ b(replace-item 3 trade-record-current note)
0 O8 D2 R1 h2 D5 R& @
6 ?% a2 Y5 c) N; R

5 w7 ^3 Y  |) N2 C  T/ l. b/ Mask customer [
" A/ L* e+ u" a* {, `7 k9 jupdate-local-reputation/ C  W% T4 g% B3 y
set trade-record-current
& F: t" n  z3 B% P" V% {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 G+ i: y# a" v9 ~9 w
]
3 ~: F, ]# L9 g/ O0 G" ]
9 ]% C0 d" Y/ F4 B

% j' ~# t5 l" A6 n0 _" ~9 }set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 e5 I9 @. B( A/ A6 \" S8 a4 a

) o9 A' d: Z2 G% E! u1 K* Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))- ^0 Y# F+ h/ B6 }
;;
将此次交易的记录加入到customertrade-record-all
5 ?. N6 J' T) r" U& kend2 t. U+ Q/ M& @" a( ]

7 _, Y/ Z! B, r- C9 hto update-local-reputation' H' V8 ?  k. Z' s/ a: O% w
set [trade-record-one-len] of myself length [trade-record-one] of myself: Z; W# Z1 P$ k' `3 \% z; M
; J2 u, v  [. }* ?/ a

. {2 w6 J. L( M" B$ \5 q+ P;;if [trade-record-one-len] of myself > 3

+ q& X  B. M3 F/ |" K- Supdate-neighbor-total
" }' Y& C! h1 K- n- F; c  [+ C;;
更新邻居节点的数目,在此进行9 x( }  v) ?4 o' C' u8 S
let i 3
3 m; G+ \4 i3 E  ~1 Q8 d: ^! Llet sum-time 0
0 D: f, C+ T% t1 Zwhile[i < [trade-record-one-len] of myself]
7 f  R) j1 g; B) V+ h9 @[
6 O0 `% s, |0 Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# A. c9 u- U" |3 l, Z* I" w$ L0 L- Eset i9 V; Y+ ]( e- t: I- R
( i + 1)
% X* d' `6 h/ u1 |
]/ X: e! Q+ ?! O
let j 3
/ W; I1 z+ t# b- K( Nlet sum-money 0
5 J& W! {1 j9 k$ p" x9 v0 hwhile[j < [trade-record-one-len] of myself]3 u1 L- q4 }0 P# h
[  c) b7 o/ O6 j1 Y
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 I1 {3 v6 a; t- B% S' F/ D7 j
set j7 @: S  }$ z1 u0 ]3 Y
( j + 1)
, }' Q4 s0 M! m/ m' u
]
' ]' u# l% P/ T, U7 u2 ?let k 3& X4 _3 {1 w" Z  t
let power 0
7 w& P' q7 M+ hlet local 0
. [1 }( ?3 w- s2 R- ]+ Nwhile [k <[trade-record-one-len] of myself]: t: n* G8 w4 j  ]2 E; k! n6 T
[! V" O: G5 y9 I9 U5 n
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)
0 I) [7 }' x8 J/ }* f' N3 J! [" jset k (k + 1)0 O) G- I3 G- b& ]! {* f
]! r9 h9 C; A! g$ w! q; v* k8 M% Q
set [local-reputation] of myself (local)
& N5 [6 q& A" L+ ]" Wend! w* W  s1 ^/ S" W/ Y5 n0 j) o5 G+ m

" ]; ?; ]  D2 K. j+ Hto update-neighbor-total
% y: O% q6 `+ K  @# W( \( s
# W/ h) S+ ?) m4 M4 p3 x$ Q; \if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 ?2 K# F: c- k0 c9 A

+ \- f  `: I* D7 h8 }& X* [

+ g2 s( i, C# s) _$ Y6 `8 J$ Fend
& d" [1 c/ Q6 q+ X. w6 w  d) z4 @( A+ Y- S
to update-credibility-ijl
) `: X. e2 ^* f* u4 ?# U5 Y* Q. J- ], F8 W
;;
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. h1 h( V( O0 H& X* m( C* _
let l 0" L' ]; C3 B2 A% W+ y
while[ l < people ]
5 t3 a4 ^# R. T+ l0 d8 |! 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
* S/ q! ^/ s' V& x  Z8 V: ]' n. H[
  I+ A  c% b) Y( N+ D0 P9 D0 Vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" `! T$ [4 |6 y1 A$ D
if (trade-record-one-j-l-len > 3)5 r1 E  g, |- E3 Y& D
[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* g( z" `3 n: X
let i 37 S# C6 _% S$ }& X9 ]+ M7 i
let sum-time 0" Z2 {' x/ F5 d! ], I
while[i < trade-record-one-len]
, p3 S# G1 O" H5 t1 }; K[8 l5 ?3 p& \' z: T
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# ?; h" h, t, o- W) e7 ^set i$ ~* H, Y! C( R# {0 i& T( W
( i + 1)
# |0 |6 E$ J8 N; r+ ?( m1 V
]
8 S% q! F3 V  C9 H3 H" b' W, Flet credibility-i-j-l 0" b; M6 ^3 h( N8 ]) }6 I: Q
;;i
评价(jjl的评价)% S9 k1 G- t7 D9 R6 d
let j 3
& E4 x( `" M8 Y# vlet k 4
4 k3 b8 y; I6 S/ Swhile[j < trade-record-one-len]6 W' ~/ }2 ?5 @5 j) v0 X7 X! j$ r
[
% _+ N' B6 ?: r  Q" q$ Zwhile [((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: o9 d: S4 X( n. T& ?( d& q
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)2 e: h; h! }' U0 k+ M
set j
9 }6 {/ k7 z/ }% F, A7 W( j + 1)

+ }0 `' W* a1 N4 B]5 O" \% g/ f* |# T9 X. Y
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 L) V( ~# h! q- L2 J& |6 j7 |
' [+ d- d- _" I1 H8 {/ M: H

! ?% R& {& U% a7 C9 w9 R3 Olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 Z( S- c; C: \' _$ G2 };;
及时更新il的评价质量的评价
( P# ?6 k: {# m, Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# Z" u+ t, Q, j! s, t
set l (l + 1)
( w, ^6 J3 Z. c4 a( }]. ~8 Z( @7 [% y3 N. h& \
end; Y3 _* O) U  T+ V

: q9 c) f6 W8 p7 hto update-credibility-list2 y& h& @' m. @3 w5 j
let i 0
- ]( w4 q5 |/ o& i# W9 Pwhile[i < people]+ o+ e& M, w* n3 B: ]
[
7 \2 r- @$ ^0 \. ?2 ~. vlet j 05 J& a4 ?1 Q8 h
let note 0
* n+ ?1 m/ }( U5 K, P. llet k 0
* v9 L+ n/ f$ p8 u/ s! |! M;;
计作出过评价的邻居节点的数目+ b3 _8 X1 i3 h- k7 d- i5 {
while[j < people]
) [  u! o7 u8 E/ J( p* `[
- R/ G; @# z- C0 q: ^4 n) \7 ^if (item j( [credibility] of turtle (i + 1)) != -1)( I0 t5 [+ X% B3 \) ]; G0 ~
;;
判断是否给本turtle的评价质量做出过评价的节点% J! M* y6 \4 Y* `. g
[set note (note + item j ([credibility]of turtle (i + 1)))
) [7 ?) g/ K1 f9 L7 Z1 r;;*(exp (-(people - 2)))/(people - 2))]

5 x0 n( A; g+ h, [* Q1 Hset k (k + 1)
6 c$ v% ~# }: d, e]
1 m. {( s& i" a! Q0 ?1 wset j (j + 1), |) Q$ O& v- P  J' v
]
7 p4 {  F; \5 O+ B  h8 }+ o# Uset note (note *(exp (- (1 / k)))/ k)( H1 e% Y: G, O6 T
set credibility-list (replace-item i credibility-list note)! U9 v% B( Q; E9 [
set i (i + 1)+ I  y/ K4 y+ e. N- E. }: P
]
: `5 d+ N& b. M0 ^% Gend
' T- `7 R# C- j, P- G8 G! D. S2 ~
to update-global-reputation-list3 v, w. Z) @4 j1 _
let j 0: z1 j8 f0 g# E% d. U* W/ D
while[j < people]$ \$ D! k$ ]* ~4 A) p4 J
[
) k; x- F$ J. d- mlet new 0
% f+ C# o0 \+ [3 t;;
暂存新的一个全局声誉
+ l; D  t% Z) m8 `" S& r; blet i 0
1 g) R  L  x( w+ H6 B* p  Jlet sum-money 0# c% J# z( D3 B7 @( S% n; C
let credibility-money 0( @* \) {# Y: H5 q! s8 T8 z
while [i < people]" }! o/ C3 k$ f+ \
[2 y1 U4 f( b% i9 b+ S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* A% e4 U# ]* a5 B7 {  R# D4 Eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" p$ C. o4 r" V( a1 O/ ~set i (i + 1)6 ]+ G+ J2 O- A$ O- _: P- n- [; h
]
7 U5 g$ r( n- k8 X5 C1 o- Mlet k 02 U& f1 H" O3 w2 c9 q7 h
let new1 0
9 r' j0 z  F+ E: _while [k < people]
0 x5 W. `, Y8 _, L' T1 r% }/ |" F[
/ c2 J4 w( t; Aset 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)
8 u- |1 d& C, `set k (k + 1)! B/ \; e! J9 c
]
0 c9 x4 O+ S5 l6 J; _! m" Jset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
8 a! D: _- X& W& Wset global-reputation-list (replace-item j global-reputation-list new)
9 V7 ^2 y9 k0 F; vset j (j + 1)2 ?0 L# A1 A1 B
]
. g. g1 f" d) b( bend
+ k5 \, R; z  O" V! Q
( |5 u0 C+ G; D  m
6 r+ a( L5 m; _5 c: d2 M' x* @8 h+ d8 |5 q* h  G. V. J& u( ?" e
to get-color1 C8 R  N) t- y/ q  w% Y! @( Z

' J/ M% X9 A8 K7 z- |2 K6 \set color blue
* r+ g- m. Z; s% u- D+ H
end! ?$ ?& H% y- V, {
0 G4 o; n5 m1 J" E
to poll-class2 _( H0 m" ]1 S+ a2 _
end
2 ]  M1 N# L1 b2 C2 J# g- r/ U: G" K5 E( ]3 ~3 H8 \( x- ]
to setup-plot1
* W3 @5 M: p+ Q' Y
! E. p5 L; e# O$ f, p( aset-current-plot "Trends-of-Local-reputation"

  B/ \* G% O- e; [4 ]5 a, C& K2 \$ @. n# b' p2 r* H
set-plot-x-range 0 xmax
( t+ h, ]% X1 |( I6 I6 e
3 V% t) y& D6 k0 p0 J$ ]& ]( D6 x
set-plot-y-range 0.0 ymax
# m1 h# m) G6 \! U
end
5 H: {( X+ s% O/ q3 d7 @# o2 d0 f& a. C# J/ q
to setup-plot2
! l1 X$ e' V: D9 S
7 ~9 O$ t8 a' Q8 eset-current-plot "Trends-of-global-reputation"
  S/ V8 k+ K- b9 ?& l

! S& n- t( D& u) ]+ Jset-plot-x-range 0 xmax

# k# w* ]9 u' z) _/ U5 Z' S" ?* a5 a$ J
set-plot-y-range 0.0 ymax
8 m# J5 I/ E9 F5 i
end
2 _- x2 Q3 ]% X2 c  y! _7 ]0 e! A5 u; k! i) z/ w4 s" Y3 g+ I
to setup-plot3
: y+ C: j! M; L* V1 h6 x2 o5 l- a' t/ S
5 A- o( E& M! A3 ^6 ^( T3 T4 G3 ?set-current-plot "Trends-of-credibility"
) J. H+ z4 c, }+ ?# o" _

0 f0 a" }! i7 z2 S3 Q5 `set-plot-x-range 0 xmax

2 g* g( I" Q0 ]6 u8 [! \6 ?4 h4 T% N) A; L! B4 i% D
set-plot-y-range 0.0 ymax

& M. y3 c% Y9 s+ |+ e( b7 Wend  }; G$ x1 I2 r% [0 I

1 z8 }9 Z% X, R) k0 Qto do-plots
; A1 Z  {9 M! `1 h" N, [set-current-plot "Trends-of-Local-reputation"2 B9 }7 S' I6 y( T4 s  c. Y7 T
set-current-plot-pen "Honest service". r# T+ w7 l# W$ `
end
. N7 v. l5 E/ c
+ w) Z4 b+ |- w/ J: O[ 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.- S. {7 J; q+ z4 U0 f/ x$ \( s+ N

4 [  d5 j' q& z/ z( J9 I7 J1 V% B7 J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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