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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:7 {3 h$ T" g1 i
to do-business
# W3 V0 i8 O, z6 O' s5 m1 n! h: s) k rt random 360
" n: M1 w0 @5 I: M fd 1( `$ j7 m/ u! J" _! |
ifelse(other turtles-here != nobody)[# C2 S6 j0 Y/ G) h
   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.; B- g& x  S. Q1 I3 z0 O3 J% C
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * I' v4 ]$ m& x. f
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  R! G* J0 D( S" ]' v. `/ S. G   set [trade-record-one-len] of self length [trade-record-one] of self
7 p  n4 ^, K: T( g   set trade-record-current( list (timer) (random money-upper-limit))
2 b9 ?: l4 }, C: K1 c* a' u# U: a% i
问题的提示如下:, U. A9 z1 G0 @' s
. V  E: M7 ~) k# h1 L$ X  _
error while turtle 50 running OF in procedure DO-BUSINESS; {. F4 a/ V4 f$ s
  called by procedure GO
9 q3 B" X. \+ U: A. bOF expected input to be a turtle agentset or turtle but got NOBODY instead.) p8 t. ]3 ]: N) W
(halted running of go)$ N+ f! d4 [5 Q" `/ Y+ X

  b. t$ O: G- L3 C% V1 S5 L1 A8 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~~
) k9 M1 R: i. w) V: u! `$ A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" E" c# K6 d2 e) g
globals[
" x7 o& a8 J3 B! m8 {' C; N7 }1 Fxmax
4 p$ d; a$ O# \3 S! qymax
+ l9 t% Q0 F0 C$ w9 Gglobal-reputation-list
6 x! a8 B* p' L/ r* t9 u4 @
6 Z6 @9 l- F% w# H! ?0 F;;
每一个turtle的全局声誉都存在此LIST' I9 Z! C2 d  ?7 R- s# q
credibility-list; G# d; ?. S4 g( Q5 }
;;
每一个turtle的评价可信度
: W+ z' g" S: _+ B/ t, l% C: s9 Bhonest-service* I( W; o% H5 h' |# i; Z8 K3 H, F* E4 A
unhonest-service9 w+ f4 y" e1 m9 ^" x  m3 z! V
oscillation
7 c0 S8 x0 s& n+ [- f5 t4 qrand-dynamic
5 g4 L1 I! r. R% R]6 `" Y: M7 b+ X# l( |5 g

9 `+ m4 H! ]$ M2 n3 O% C2 F# oturtles-own[7 Y2 ~# g8 r+ O8 Q6 l
trade-record-all# n3 A3 {6 i7 z: ~' w
;;a list of lists,
trade-record-one组成
  [$ L. n9 C  j4 Ntrade-record-one
2 k  D, \: H2 h  f' g4 y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ ]! J# k2 m+ F% a

: f: h/ k9 J; j9 I; x;;[
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 k# S8 i* d# W2 t/ d% e
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 K6 t) Q, \1 ?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) g4 [& [6 Z1 ]; N( `( W) K
neighbor-total
5 @& g4 s% Y& X; O;;
记录该turtle的邻居节点的数目
, e9 c3 H, m3 R9 s7 Htrade-time
  u# c: Q4 m5 U- `( a0 @;;
当前发生交易的turtle的交易时间
7 E6 N3 Z8 B8 |9 S% j# ^' Pappraise-give
- U4 b. M8 |3 E1 ?% x7 H;;
当前发生交易时给出的评价, R- t: T* K. L/ N2 E7 r0 ]
appraise-receive
. }4 w8 h' I, B! {' ]5 G' K;;
当前发生交易时收到的评价
/ N. N% a/ J3 p# @' @- Cappraise-time) s5 v& u' w  Q5 Z  n1 j
;;
当前发生交易时的评价时间
( V. o( x) `2 `- u# U; |! Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) C- P6 k$ M& N$ d/ O* ktrade-times-total
  P) }; ?1 E0 \% Y;;
与当前turtle的交易总次数
4 N" |: E* \9 R9 J# F+ R; wtrade-money-total1 B9 B. ?, ~7 K; R
;;
与当前turtle的交易总金额/ n. }5 s+ Y' H" [" r) B9 c8 n1 F
local-reputation
% m4 @: x* f1 e  g- l1 c; Bglobal-reputation$ X, O. Y( @5 {  q- I
credibility
( j3 r& G- i( j4 ?: c; R0 W;;
评价可信度,每次交易后都需要更新
! q/ j' e0 |, r3 z+ n" W: ^credibility-all
6 D2 a4 S: u/ w; n) N;;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
9 `3 [* W6 S# F& k+ b6 c+ ~/ H4 }7 ]
;;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
3 p! j% T2 L  ~/ g. Zcredibility-one
6 H+ V* |% ^* S% v;;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
4 ^! r) d" d7 ]& X" Dglobal-proportion7 g. t- V" [. L
customer4 b& v; f1 X* v: `6 `8 U# O
customer-no4 k4 R2 P$ K! E+ E' I+ j& x
trust-ok
( t. P" ?" B3 ]3 y, t: U5 g- Dtrade-record-one-len;;trade-record-one的长度# [8 k3 W4 m5 z- I
]  g/ D: U: |" }  l( `$ ]' o

( U+ K5 N: V; [, O8 W;;setup procedure+ `  ~6 b' L* z% P" Q
) g# Q0 j' a7 @. `( o: f+ I
to setup
8 {" f. q  R/ B& L& b! M& P4 ~6 I, G
ca
! c) W; r! m" Q/ ?# V

% G8 O  l" t2 t3 V$ l: Linitialize-settings
& j$ e& U; l1 O1 z8 `8 t

* A" U# K  V6 u, k+ U# ~crt people [setup-turtles]
1 d& `& S8 I- K6 L" t5 F

+ u% y2 Z8 \/ }) p: ?$ n/ Ereset-timer

- o/ R0 d- q  d: R" ?$ z
3 ]6 s% ]- @# ~' P! ]4 {  y; Y+ _' rpoll-class
4 x$ d# X# F: l2 w( P
; ]7 F9 L3 K6 f/ Q
setup-plots
: j7 J6 e' r9 A, [+ |# l7 H
; k* @& d. X2 f% O( x, Y0 m" L% X. k4 c
do-plots
( f6 \3 J! _6 G1 g( J, ~* G5 p
end* p$ [- ~2 p0 ?& E) ?

, j/ ^. R8 I. [to initialize-settings
8 O& g) i- z3 b! t: I. A/ J/ C
; P9 _: S2 V/ Y5 Iset global-reputation-list []

% F3 o% m8 Y$ m! [; b! k* H) Y# j  m: b! B% I
set credibility-list n-values people [0.5]

4 a; K3 F5 l& M, u. g$ }  R! i- X& @# t  `% M" v* T( K
set honest-service 0
* Q1 F0 `* ?, r6 J9 g3 h9 }' V$ k# p9 z
9 B- t: g0 m+ m
set unhonest-service 0

. F$ R- a- L% E9 g9 [; ^3 I. @) @: U4 P0 E
set oscillation 0

' K$ p( I6 m3 C" u$ Q' Y4 r! i( @4 z7 `$ {( Z9 j; w: d, f
set rand-dynamic 0
6 F4 z5 x3 V( u* g
end5 E! `( K5 b& |6 G6 q/ s' @" E

$ }, v1 ?3 n, @6 Dto setup-turtles , p: h( p! w. o7 Z
set shape "person"
9 Y1 J8 ~" D0 zsetxy random-xcor random-ycor
9 t( i) J' u1 t" r  sset trade-record-one []% l& _' a$ m$ [. `( Y( {, f  k2 V' R) v

# Z7 {! ?( q! r* s3 t( yset trade-record-all n-values people [(list (? + 1) 0 0)] % F* |' {, w$ }  _) x
. H1 }( d/ Z& k* W/ r; q
set trade-record-current []! b  E9 v2 U% s& b, Y. v
set credibility-receive []
# ^+ z; ^5 i6 ]; c/ E, R$ ~set local-reputation 0.5" e9 ~% Y, K% ~8 Q  D
set neighbor-total 0
* Z. W5 a0 t+ R& K4 u1 dset trade-times-total 00 {3 r3 Y" D7 P- A9 U$ i' \- o
set trade-money-total 0
# g' O' B9 W% y1 N/ D4 Cset customer nobody
  Z$ y# @9 f+ M0 M5 [. rset credibility-all n-values people [creat-credibility]
3 i2 Q( P% D, b4 e/ Pset credibility n-values people [-1]1 @  P8 K3 f) V* v  N
get-color
  P8 S: I  j$ L# H

6 _" p- g8 S; ^% c: a9 T& kend0 \' S6 S3 Z) A- N' Y

2 `# ]2 ?6 E5 ato-report creat-credibility
0 L0 }. n- K5 M( }$ d" {8 sreport n-values people [0.5]% R, A! x: J  t: m0 `6 D6 N
end1 u. i: l2 O7 e2 o6 H/ @0 h, P" a& e

: A+ w8 z5 @, a7 r% M" hto setup-plots
; f( D* g: n; j0 W4 O, o
# h/ t6 l; ~' {, Qset xmax 30
7 O. F+ w/ n( C

7 H/ K% x8 d/ qset ymax 1.0

% L+ `* y5 U- Q* P6 l5 v2 A- Q& H/ z& I
clear-all-plots

3 U" P2 o) a; U8 ]% V$ U: P6 Y# T$ Y/ b
' V# h, M+ u& K9 n2 j0 fsetup-plot1
6 ?) ^6 i. o0 d; K4 q. m# [

0 v* i8 g# F2 t" e  esetup-plot2
& n& v' l: R1 ~) R
: q  y- h5 ~; b( [7 ]" n
setup-plot3

3 n; W4 C; d: J7 t0 o# _( z; N; Vend: @7 B9 Y7 |2 F* m$ c: B' O

6 T( J) A$ k& Z; J1 ?;;run time procedures
0 j5 [  ]8 g( R9 U- q# y& @0 x! E3 g* E/ X& S$ g0 M6 K; n0 I! ?5 z
to go1 }, p# B$ e$ H8 G' Z( G3 l+ a

4 y4 i' H  O- Hask turtles [do-business]
% a7 f3 G& w( B1 n& I1 j
end
4 b  g4 C  P4 l0 l8 g
3 x! r, y; K$ [2 [6 Nto do-business
, Y: s- Q: X- H( V* y" S& \2 z2 ?! Y

0 L. W  C+ Y! y% Q4 K$ D! d: @" y+ w
rt random 360

0 w; o6 G- C" y! B0 ~/ ]  Y+ \
$ G' ~7 Q: G3 O# j+ n7 l" b0 L/ _fd 1
) q( ~5 S4 W. n' M1 a" K

, p1 k. F, @8 p3 N. \ifelse(other turtles-here != nobody)[

) V+ ]  \: m: |! ~0 F) Z. Z- ?% O6 L7 T$ L/ y* w
set customer one-of other turtles-here

' O$ d+ {" F3 V" j7 z7 Q$ Q: j9 r& X. `5 k+ ~# _: R
;; set [customer] of customer myself

; D8 J% `7 \- y; R) i$ j# |! Z$ o# k( x2 ^  y
set [trade-record-one] of self item (([who] of customer) - 1)/ v- q# `7 p( ^. J4 t+ ^7 ?
[trade-record-all]of self
. S+ s2 b) M0 J. x/ ^, d;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' F. U5 X5 C& ?, k2 K5 A

# T2 m7 _2 |6 Zset [trade-record-one] of customer item (([who] of self) - 1)3 Y7 @* E$ I) a  L) m5 ]
[trade-record-all]of customer
/ F$ N0 w) O6 o2 n0 l% N
' X$ q% u2 j7 P3 ^- Z
set [trade-record-one-len] of self length [trade-record-one] of self

# `2 ]* |. g0 \2 t3 o' ^
! @- J# {/ A( W+ J4 Q. i7 tset trade-record-current( list (timer) (random money-upper-limit))
4 J/ \- L( b1 u) M
1 v& m% {' d0 d: a6 O2 g
ask self [do-trust]0 W4 ]0 s8 x% R
;;
先求ij的信任度
" L, |8 B  k' q1 l) {8 r. W6 ~  C/ h. F. b9 v0 e" m
if ([trust-ok] of self)
3 h; }+ ]& p; p5 w;;
根据ij的信任度来决定是否与j进行交易[
. o4 w( F4 [: ^4 Wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ p) o, s4 ~8 d) D
+ r" @, A1 v. R) \% P0 Q# z: b
[

. w& ?( _0 W& f- D: M
6 [8 D/ w2 m" |# W; gdo-trade

. T2 A- @& F; _! O  c
- x( @/ j7 R1 iupdate-credibility-ijl

! p  @# |* A  e: y" g& o; X
4 ?: P$ {, d; @update-credibility-list1 i! l9 I8 k$ [3 w
) G9 @8 {7 U3 u2 \: o9 l
9 B% M: w: Z' a6 C$ \& L
update-global-reputation-list

6 k6 z# A$ c3 U( H1 l: f
1 {# ^  a  \0 B9 }/ J# ppoll-class
3 t- Y# [9 E" v+ w
8 V' d* H# l, L0 Z% m  {7 r
get-color
" F/ {2 r5 i/ \/ I& \( s

! b5 i+ @6 r$ E]]
+ B, f9 Z7 F, p: i
; @% ], P$ E: w9 T;;
如果所得的信任度满足条件,则进行交易& x" V/ T' M" y# @4 n. y
1 y2 Q  y( C; N5 w" ?( w
[

) [, p1 E6 W4 P7 w2 k9 M3 G4 b1 y) ]- z/ U' u1 m  a0 q
rt random 360

$ D1 a! j) ]! O! T& q7 N: t7 B; H9 b1 k2 ]. `( B7 h1 D& U- h! V
fd 1

% C+ W8 A' K4 I6 b9 t( z# {! K
1 z. Z( {8 B0 [4 j4 k) u" n]

2 x  p& t9 W# H' `8 X( Y* a& r5 A0 t* ^4 z
end

3 ], _6 k' W" G) S+ V; q3 M1 ]9 N
- u9 |/ t% {# @1 G7 }8 mto do-trust
  t/ c. Y% N/ _, i/ h0 `set trust-ok False
$ L4 ^+ g& u% G3 i0 ?2 S4 e0 u
" U1 {( c# [5 L, O& \) W

5 ?7 m7 F% D. ~: o% R6 olet max-trade-times 0
9 A9 ^6 y$ X7 I+ R" Sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" N; g0 v! \: W/ ~
let max-trade-money 0/ q# C! x' i6 i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" o- N* t5 U7 n% k" b; O* s
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# |8 J& m; t$ n; v9 O2 ?& P
5 d, h1 Y, N1 {6 s1 f8 A3 ^% J

  E, j+ X2 z& v4 Hget-global-proportion5 u, n2 E7 @1 V5 x, C+ A
let trust-value6 w4 K# b) o* d1 G% o
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)

( y- p0 p3 [6 a  g1 bif(trust-value > trade-trust-value)0 h! b& E6 G1 x. q2 U) p. z/ {) j5 ~
[set trust-ok true]* v) u' M0 [8 o* Q
end
( e( x2 P+ t/ y' N* k8 X1 y7 y8 d
, ?' M6 \) `# ]0 ^2 C+ Jto get-global-proportion" p8 r+ I% ?" E* G+ |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" K; `  y0 L* Z: h7 o" i) w[set global-proportion 0]
" t8 n, l1 G. W  I[let i 07 W5 O  X9 b$ U5 w
let sum-money 0
/ z) e2 f! q% v/ B2 y; c/ ?while[ i < people]' z6 t1 m! I& _9 U! d
[
4 ]4 t2 C4 e5 b1 U* D2 B! hif( length (item i' W3 M: [! p9 q3 N4 c
[trade-record-all] of customer) > 3 )

7 k) g* R3 n" {6 Y[) k7 v, M9 x7 {* L" V9 {
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ H2 g/ V" n$ C]
3 t& n) K$ A2 q% e]+ K, t/ g5 X. A2 F# B8 u
let j 05 @/ D5 C% R7 }) b/ l; R
let note 0
8 V, k( Z: F" fwhile[ j < people]) b% P1 U# M; f* i1 I6 f0 p2 f
[
& }, [% O; K9 B+ D2 _* Jif( length (item i
% e( b" S9 j7 p/ i  F: }5 Y5 M[trade-record-all] of customer) > 3 )

* J5 A+ `3 \( i& A[
# [  O& N4 B1 E* Y0 |$ mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) u+ o4 E2 ^/ ]" K2 S/ i! f9 J[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; x8 g! a0 B" L- P% r
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; I# x. z2 ~% t8 \0 H
]: Z4 a- l  `+ L
]# e3 S6 z& ^) S8 u( \+ U! b
set global-proportion note( ~. u" b' k1 S* n
]
$ D- p$ Z$ T) |/ rend, x; S* h# R/ F

0 \! ~9 ?* ?' W0 l+ ]& dto do-trade, D# X* F% c4 m, i0 J) H
;;
这个过程实际上是给双方作出评价的过程
) Q- P" c( F) T2 |% S- yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
$ Z$ X0 I9 e5 w$ p3 ?$ xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( [0 A7 V4 \% t  U) Yset trade-record-current lput(timer) trade-record-current
3 g1 t5 L$ ^9 y0 n( X6 w% h+ w4 U;;
评价时间/ m; V$ y& B9 P. A; c+ J
ask myself [
! x/ b/ O0 g, D4 @% Kupdate-local-reputation, H. P* y4 ]7 z2 v/ u2 y# j9 N% C
set trade-record-current lput([local-reputation] of myself) trade-record-current+ U4 Z% M- L. M& a& J6 f# {8 O
]
% A9 y; ?; D4 z& l- ^% a, {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# |  Z' {9 `6 [1 R
;;
将此次交易的记录加入到trade-record-one& }- }! A, @. f2 r
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ ~9 o2 ^: c7 ]' k
let note (item 2 trade-record-current )
% G4 o' B4 l2 E. [; t: G9 dset trade-record-current
/ h. O% C& O5 K9 y$ S(replace-item 2 trade-record-current (item 3 trade-record-current))

( T6 ]5 m, r7 r& o+ `set trade-record-current# `8 ?, x2 @) x
(replace-item 3 trade-record-current note)7 s+ B! A" e7 U
$ e0 R) ^. x0 r% m' R, |

5 }" A- V: d4 I- {5 d! Qask customer [- g6 g6 N# k# y3 q) v2 Y
update-local-reputation
3 X+ R5 {1 m+ s  ^. G2 Gset trade-record-current
" P4 y' ~8 e3 P, b* l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

  L8 {; j1 n; y/ z. ~% p: C  g: n]; K- I0 Y7 ?* }# L' p1 o$ X  o
! t0 ]# Y* W) Q! Z$ W

  B/ f1 `9 r) @% Hset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
  P3 j2 P  r  O' ~1 ~6 z

8 r) {# p+ H! m# F/ G+ vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ G0 p# O) w- @) r5 B; y  K1 Q5 _! y
;;
将此次交易的记录加入到customertrade-record-all
! E& t7 _' L% Q- Y5 Gend
6 M8 D) x* L* K* c# S+ p+ U& z/ H+ t6 p/ Y; w
to update-local-reputation
: T- O0 K$ p( W" @$ F# U) ?/ U6 z2 Zset [trade-record-one-len] of myself length [trade-record-one] of myself" ?+ Y/ k  F5 e2 d( s6 B
& h9 Y4 b' v9 \* w! O4 d

, o5 T$ Q* }% d1 g1 b+ |;;if [trade-record-one-len] of myself > 3
6 B/ b/ r+ u' a9 U& j8 I
update-neighbor-total) j# ?! R- c- S
;;
更新邻居节点的数目,在此进行
+ r, \7 M2 v. v  Q; N7 b$ `! ~let i 32 z8 p9 `- A" @/ O3 `+ I0 t
let sum-time 0- U/ S- k  e: V% J
while[i < [trade-record-one-len] of myself]6 Q: [$ V- V' X4 W9 f: t- E
[
! b2 C4 O) W. kset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' W- F: t0 ]% {# S  m
set i3 ]: y8 Y0 j* `/ x, n$ [2 t9 _
( i + 1)
: |" |7 Q% V+ Z. H
]1 Z- _( F3 P5 T7 \. _7 y
let j 3. t! z: e, ^9 ~8 {  R% ~
let sum-money 0
- |) R. l6 u& W9 w& ^: Q1 u, }while[j < [trade-record-one-len] of myself]% l6 e, e. S: f. E1 T6 g% }
[
( G# w$ ]/ r# gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
# T1 g0 u: }% Oset j
! a$ B& V* j4 s7 b( j + 1)
4 ~% D/ n# z. \
]
9 g* @3 B0 [) Y* j) g# Klet k 3- v: J7 k* c2 \0 M" v! f
let power 0
5 e* o2 f/ p/ W7 Q8 z( m. K6 blet local 0' m) y& X* z# w$ ]
while [k <[trade-record-one-len] of myself]1 R. ?7 J/ ~% d: U9 P6 p# J
[
7 O. O( v, n$ U- n6 @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)
9 J# U) C/ q( Oset k (k + 1)
- _$ `1 q  m$ x  @( Y]! g1 a& }" y2 E  p7 R
set [local-reputation] of myself (local)  |1 d" U/ }2 J4 [- A
end
+ d8 V+ N. `1 q$ M3 ^! P( R
+ J3 b( q6 A$ Sto update-neighbor-total
: N) t1 A1 \+ T
' v2 n- d6 V* e1 w% u3 t) Q+ Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ N& r, c9 k. D% W1 {, ~0 Q: Z8 i7 n! N& D+ B8 g
2 v: n8 u& H% Y: ]7 y2 |( E. n
end, C3 P! T: B" D- l* G5 e
$ P; v( X! e# N; p7 ^
to update-credibility-ijl
7 @, |3 e5 L4 k1 P7 Q  W
8 b" |0 ?' a* i0 d) I+ w6 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。2 L6 m+ C. d' V  B
let l 0
. F( j  D3 c4 J4 @while[ l < people ]
9 e5 [: X: ?% _+ [, i4 o1 q;;
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, I0 s! ~( l# k1 A+ d
[
5 m  q9 Y& x; ^3 P  B0 Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)/ y/ p- G- V' `7 Q( N; d# l5 c
if (trade-record-one-j-l-len > 3)
* ?" z! Y  @. p( k[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# P8 e# u& E6 \$ X- h
let i 3
# U+ O6 F4 m& k4 I/ ?9 i; k8 Clet sum-time 0
: j# k, y" y# ^3 Ewhile[i < trade-record-one-len]
- y. U" P7 B; Y: E" f[
& b8 L3 p7 g7 o1 x2 Hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" t% S0 r* z8 i% uset i
9 s' W& P9 W' f1 e% ~( i + 1)

% c9 x0 |, i5 p8 T/ o]
# a! w7 j& h5 O7 ]4 v7 j' mlet credibility-i-j-l 0$ o+ \) c) ~/ w/ B( E
;;i
评价(jjl的评价)
$ Y  i: i# z: z4 }1 i* Plet j 3$ O2 t, V8 U+ O  t& ^
let k 46 b2 H# C2 g" r
while[j < trade-record-one-len]# U/ F, a. R! Y- S& s
[
0 u# {- w5 [3 m* W( L" X& i* Swhile [((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. L% P. W  C6 U% S2 q+ w2 W/ t- I
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)
& L  n  c. [& Qset j% G7 Y9 a+ ?/ D- Y; m5 a+ O
( j + 1)

# }9 P' p8 `& J- f+ ~. X) m]
, ?. {( u; ?5 [& Q! Z* q: r* nset [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 ))
; K) B& m' n0 n% t! u. H1 T- B' C+ J( B

  m' k7 S8 q2 M  y. o( U3 N: blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' c1 K- R& P/ O0 V( [% \
;;
及时更新il的评价质量的评价
( P2 E" V5 M( x4 q! g) Xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) X5 J# V5 n) U1 n3 S6 H7 zset l (l + 1)  H! g% e2 H- _0 F1 b- g
]; N, c2 S- f/ o: ^$ y2 M' G7 X
end
1 t* q( M% e9 k" `4 r
" ?6 C7 g  K$ l5 ?# D& vto update-credibility-list5 o9 d3 u! K  h1 s3 Q$ K. }
let i 0  q+ M7 a& s; U# [3 @1 o, @) Y$ J
while[i < people]4 u* P* b+ _9 c1 x0 }$ u8 n: L
[
# r5 s8 O$ B1 }. y6 Llet j 0
. D8 H* ?! m* G) `- }4 P% f6 q- Alet note 03 b" F. s8 U  }# d3 g! }
let k 0& y7 N. X  n$ ~7 g; {2 d
;;
计作出过评价的邻居节点的数目
4 Y: Q) r* c/ A# Y- L# nwhile[j < people]
3 C! s/ {  E- ?6 e/ y[
1 H% s" e% j1 @- C3 O9 oif (item j( [credibility] of turtle (i + 1)) != -1)6 B' J* Z1 S3 ]
;;
判断是否给本turtle的评价质量做出过评价的节点# M0 x( P, a$ N( O. ?1 B
[set note (note + item j ([credibility]of turtle (i + 1)))* J( k& e! s* r5 m. v* p$ `
;;*(exp (-(people - 2)))/(people - 2))]

9 c! {' w8 l0 y3 D; Oset k (k + 1); e# ], e: b1 K
]0 a& M% z5 s. T
set j (j + 1); }3 f' o! f# N5 S; K- i4 ?* A' ~3 i
]
) x- D: g1 g" a) ?3 k. J; ^set note (note *(exp (- (1 / k)))/ k)
9 U* b  F* b. H0 Nset credibility-list (replace-item i credibility-list note)( z# d% T& {4 p; W1 B; i" b
set i (i + 1)% [; i3 X! o' I  d
]! P  ?- y% x2 z; w, ~
end" g; S- k6 ]+ j/ \4 c$ O: S& ~$ c
5 r+ y  J* n5 \; Y5 R
to update-global-reputation-list
6 L; R& t% J1 _6 J+ M  p% |( k; Zlet j 0
9 L7 ?1 S5 p: Bwhile[j < people]; J* {: g: o5 I4 l4 S
[
  j! r4 u3 X" ]; blet new 0! J: R$ ^& W9 M! ~  u
;;
暂存新的一个全局声誉
4 T' e! i0 i; ]: Plet i 0) z# A( Z- C0 L' S
let sum-money 0
3 G$ t4 `! M  V! Q0 mlet credibility-money 0. v. L! S& Y! N2 }$ E9 n# s+ M
while [i < people]2 U+ d! a; m& j: f
[) y# \. C/ ~" ?# `
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
- o' A4 ?, f3 j' S4 y; U) Pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 u1 X% A. r' w/ qset i (i + 1); \1 M* L  a5 I7 f. d7 g7 z0 F+ f
]
" H0 r( x2 M! c: |let k 0
% ]! J1 g* k& V6 _+ u. x% E9 olet new1 09 m: I+ O+ g# d, @; Z. f
while [k < people]. B( r3 [/ \3 D) M4 h
[
4 W. N* F6 A. J% U' Z( fset 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)
' b" E4 _$ ?0 U; Pset k (k + 1)8 y8 k( C: |2 ^
]- f" t% C7 I* q# ^. G7 Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , d% |2 X: v$ S2 K( ?8 I
set global-reputation-list (replace-item j global-reputation-list new)6 Y' g/ s0 n# y$ |: z6 {4 L" ?
set j (j + 1)! L( h7 N+ g8 k  y
]
* r8 O9 Y% ~3 w2 c# u+ G, {- l. Aend9 q2 ], r4 D+ w7 e9 U8 c
6 c- s( B; b5 h  C, x

6 i( w' x8 P& I- i# U( B
& |4 V0 f: Z8 Qto get-color* ?) [% D, ~) N" v3 p

* D  B6 I+ v+ h! @' u9 Kset color blue
3 S/ j7 ?' @/ v. F7 q) j7 j) h
end* M3 s9 I. C  m) L3 q, C1 U# a

1 Y& L. p  F$ J- V" k1 jto poll-class/ H4 B3 F0 Q& d% o. s
end
. j6 _& j( V- K$ I. j6 ~$ }) D9 s/ i4 T( L. k& _
to setup-plot1% Z' ]! ~9 n. `- z" v8 m
$ F1 d3 X4 ?" \4 K. K: t
set-current-plot "Trends-of-Local-reputation"
# t$ [8 G. r( Z8 I+ K0 U2 }
) `1 F- j% @# ~. ]' F9 |) ~
set-plot-x-range 0 xmax
9 E8 [+ J7 w: u

$ m0 t* f) w6 E% |9 Z0 i1 `set-plot-y-range 0.0 ymax

7 t: ?7 N$ r0 o2 |9 F1 qend% G4 o) A/ k+ b9 G, K+ t* k0 N' d3 D

8 I$ ]7 _1 G7 c/ J' q6 m! kto setup-plot2/ k+ `7 T' U: f
) U( ?& n9 _6 V3 s4 p9 a( n) L
set-current-plot "Trends-of-global-reputation"

. W) b. r# Y( {9 w
6 p+ u1 e, v+ H" {set-plot-x-range 0 xmax

- [6 h7 A3 e) s3 V
' B- w0 f" o5 O& B& Sset-plot-y-range 0.0 ymax
2 C0 B6 _  p$ y1 ^. A* b! i
end3 G. X' o( r, D& F

  p# u4 @/ X2 T) ^6 Qto setup-plot3
7 z; |* I0 g% f8 Z" D  a0 d/ D( p! l, D5 w* m
set-current-plot "Trends-of-credibility"
' k3 m$ A2 ~. M% U  `

/ T' V% O/ ?- o' i, Dset-plot-x-range 0 xmax
* j: L3 f: f% R  G
3 e) |6 F# a3 Q3 q, K# v
set-plot-y-range 0.0 ymax
9 Q3 x  s2 S( u2 Q& c4 s; p1 J* V
end+ Z2 p6 T  ^7 ]% a" R( C( G

9 I3 l2 z* H1 o% m4 w' rto do-plots) V% t( Y6 p6 o; e5 F/ M
set-current-plot "Trends-of-Local-reputation"- e! t! b8 U, {$ x5 e6 X5 [
set-current-plot-pen "Honest service"
# W5 g$ q7 ?7 s# iend
, L6 K  W5 q% {0 n
9 N* _: P9 J/ `) X1 s3 c[ 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.( ^, l6 j  X. f# n8 E
7 u9 O4 k3 N$ V( @  w
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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