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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:( j) I9 ^5 {% h/ z9 q$ ~4 }) E" q
to do-business ' l- \4 z' u$ A! @  C! k
rt random 360/ \3 E3 A; ^9 P% l1 n5 U- p+ o
fd 1
3 W- S% b1 n1 |4 L3 b9 ^ ifelse(other turtles-here != nobody)[
1 W- z+ `( {+ {. ?% n0 Z" a$ G   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.
9 _8 `8 O, W( Q( ^8 O: y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 x( ]" J1 D0 f; s9 ?; A. r   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: v( H7 Y- I- t# R0 g   set [trade-record-one-len] of self length [trade-record-one] of self
. A' I2 i+ j$ I. ~   set trade-record-current( list (timer) (random money-upper-limit))5 }6 \3 E+ N% A, W) d) o

  R8 B, |0 S0 p' n- |; I" f9 c问题的提示如下:
5 \5 @' L, q4 z4 S0 Z( Q
3 h$ p! S) l) u- W9 yerror while turtle 50 running OF in procedure DO-BUSINESS
3 w# h# D  H1 a. n  called by procedure GO% N( `+ L" F1 x6 e, W
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
, u( R7 i) I+ V
(halted running of go)
7 ?# v+ h! w% x" ~, x  L4 }& e7 l: d3 h2 z3 S: B. S/ r0 K
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& h0 g* N' F9 c6 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' d; P0 i2 u1 ~) S- Z
globals[
$ G$ G  S& \8 y) x! Txmax% C% D1 C0 x/ ^  ~. a( j
ymax
$ }9 w  _, X% O$ Zglobal-reputation-list/ O4 `: m6 R' ^( ~5 m
* f9 k. |- v6 p
;;
每一个turtle的全局声誉都存在此LIST  P1 R' T- M# k" ^, v7 F7 L
credibility-list* g$ _8 b( _4 |& m- f
;;
每一个turtle的评价可信度8 y7 k' Y! F- F8 N2 {2 Q
honest-service/ L- [& a: L7 ^: L) |/ @
unhonest-service( ]. U- O! }, F# o
oscillation
! Q& K! ?4 T5 l- N. i* |rand-dynamic6 e+ c' q9 [9 }  R& M
]( _. d* N- I4 Q  k# M. m$ }6 {/ L
. O) o% A' S( O0 H
turtles-own[
* B' s/ K$ L1 s$ p9 ?trade-record-all  n/ C5 }4 x  r, |- D7 z$ ~$ G
;;a list of lists,
trade-record-one组成
& r/ W( q3 ]9 o8 a0 K& Ztrade-record-one
' l8 ~+ V/ m( h) v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& r4 v' q' A- C4 b6 c3 g
$ i4 m; S. w9 O+ }- z2 w6 c6 G0 a# J;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
/ g" C& s" w6 c0 \0 _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]7 Z& y0 z. I& N# R/ d( D
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
7 t) b; N8 _8 {  k' j, kneighbor-total' Q" V7 I1 j9 O
;;
记录该turtle的邻居节点的数目2 j. p) U: N8 I8 M8 A. K9 C; i) L
trade-time. \" ]$ h! q9 q6 O
;;
当前发生交易的turtle的交易时间
$ ]3 {" \% \$ T3 E2 M5 uappraise-give/ h/ |( v1 `( V. s
;;
当前发生交易时给出的评价. J$ z$ B' q# _; E0 M
appraise-receive
- H* ]% b5 p6 x$ i4 }, d;;
当前发生交易时收到的评价
; }3 b5 S. \8 u5 \# g3 Q2 Qappraise-time3 I& C0 J; {/ W8 O" ]2 Y
;;
当前发生交易时的评价时间' ^  _8 P! g# z6 x, T/ t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉. r( A) ^" n, J
trade-times-total' X8 T# V0 R1 v
;;
与当前turtle的交易总次数
, `8 r, R8 Z# M3 h& b2 Ltrade-money-total
" G9 i6 N' E' J: y- {;;
与当前turtle的交易总金额: A% o/ c- C4 I! p. c' i1 v8 D
local-reputation" |% g/ j% L2 J  B0 r' D4 C* a9 N
global-reputation# F8 `8 C8 ^% w; y+ q+ n$ J
credibility
) c* T) S: _" h' V5 }8 p+ o;;
评价可信度,每次交易后都需要更新& ]. ^3 B, S# h" c; y' Z
credibility-all
; K' W0 |. |* j' [+ q+ i;;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 p1 m: ]9 {. _# b8 F- U$ t; Q
3 `: a% ^6 f& _1 J$ A( ^;;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! w0 E9 B3 z' C, c- d# b/ X& I, }
credibility-one# R- q/ B1 ~1 T, u( X6 E
;;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
6 ]$ X7 j: @% ^  cglobal-proportion
" v6 n, I  f% t% i! `customer3 O0 j$ E" i6 q5 l, }. O; ]* c
customer-no
4 Q# P1 E; \# r5 Z8 {; j: o  I! Xtrust-ok
% r, _2 U3 q7 F2 itrade-record-one-len;;trade-record-one的长度( \! o/ }  h; ^7 s% s3 S4 ^+ e: ]% ~
]! l7 q9 f+ R/ Z4 b$ y

" z- t' ?( b2 \! h, h% ?;;setup procedure
, n. \5 r6 K3 ~: N7 T
+ l1 q" H0 d: yto setup
$ U3 `" c- M$ n
' c7 ?" g9 T5 tca

: n: A2 L- D! A) L% t* Z5 {) _) E; q( x5 x! B$ g  o) A
initialize-settings
" |3 |, r1 ]+ U- R, p

: R7 Q1 d1 c6 b& A' F/ b" s2 rcrt people [setup-turtles]
% K: X8 M" l) X+ `' L( `% N
4 N+ C4 v4 Z1 u
reset-timer
- o/ `8 u& o) `- \3 ?

* c! X2 Z, K( _& q2 D8 mpoll-class
1 w& ^2 n* R* h" J# `$ Q7 v
& R; I- B  z7 w1 C% \
setup-plots
& z6 ~& S  }/ D

) |; v/ i0 x- ado-plots
$ T1 D: j1 }! p8 ~
end
$ e& J+ S* D; I% x$ e, z3 N" h' o2 [+ Q; E/ p! y& p1 W# ~
to initialize-settings% e3 w/ _+ P9 f& J2 }! M! _+ A
- w- d* ^2 C+ ]8 M1 x- l! O0 ~
set global-reputation-list []

" |# l5 g2 r9 o8 \" p* Y
3 W& R5 N! p5 g1 hset credibility-list n-values people [0.5]

! a9 j+ q# p9 s. t: y8 ]0 a0 N- Q+ U: Y
set honest-service 0

% B1 u' g& p" m
+ V8 x9 e; w1 q; p7 G  y1 Aset unhonest-service 0
* m) a3 ]6 B0 I$ ~
! b3 b( k! W, h$ ^
set oscillation 0
- G4 S: W$ C  ~9 ~  l

$ e0 ?- ~6 t- B7 }7 ^set rand-dynamic 0

0 h) \* I6 v1 J" vend
# y7 J, t; n7 D8 o9 ?1 Y
/ K: H, U( T) Jto setup-turtles
$ ~; ^2 b4 N9 `8 Y7 Nset shape "person") _  z( g- I! F( q! x' ]! Q. s
setxy random-xcor random-ycor0 I9 i) L1 _% U( S. d. v2 D$ s
set trade-record-one []$ b- s& O" Z- @+ }
1 {* e" D# J$ O
set trade-record-all n-values people [(list (? + 1) 0 0)] + n4 O; s' g3 U+ T+ f5 g! Z

3 e$ W6 @8 `, {9 `+ `; ]9 B, l4 }set trade-record-current []
! A+ |' o& @; X7 n1 T. yset credibility-receive []. M& L6 O4 E  [1 B
set local-reputation 0.57 g1 j" g. S# `4 E: ?" F* q
set neighbor-total 08 W! k( x) W8 Z6 m+ j$ U
set trade-times-total 0
4 v9 [  Z, c0 ^set trade-money-total 0
1 p* z( p+ l+ {' M  \; o' [set customer nobody  @8 Y  v2 y) a: R& G9 m+ ^! [1 @0 i
set credibility-all n-values people [creat-credibility]: Q- Z5 {; n7 k6 F  _
set credibility n-values people [-1]
$ Y6 I7 q% B9 {/ \! _: lget-color
- Y9 d. H0 R3 L. V9 A
8 i) |/ u# F. Z9 g$ j7 N
end
/ f6 o5 q; F* L+ h6 P" W+ ?; `8 w+ Z0 k+ C% [. R* a  B$ e4 W" G6 B
to-report creat-credibility5 {7 J5 M( W9 P* F5 R+ r3 A: m6 U9 `
report n-values people [0.5]% A; B8 C  n5 Q- e  ^' h
end
# c9 {' Y' f$ o3 Y6 o5 v5 g1 K& w* |# D# b7 @
to setup-plots, A3 v- T! T8 @' U. r

% f5 J9 N: x# g/ t+ R8 X; s& oset xmax 30
) i. d7 S- l1 O* ^+ T7 F

/ @5 o! M! j8 J: u4 H6 {  ]% @set ymax 1.0
; r* z& k0 v8 [- h

" r- i" K; F; W1 w3 b9 l4 pclear-all-plots
2 E3 e1 P8 T! u  z

2 s5 f/ l/ K) m& h% Csetup-plot1
8 E% z8 f( Z' b; z; v
0 C) K( Z' Y# j' u
setup-plot2

) j7 q/ P4 U7 v7 a5 y/ M2 B8 s$ E1 N9 F( S/ Z& @1 D. U. q4 V
setup-plot3

& Z( q7 `/ p' i$ V0 [end
. [6 K; t1 g# t9 M3 O/ w
0 R& p: k" c9 H2 \1 e& z;;run time procedures6 ^: R5 w  q% \5 H% t/ k
/ e3 M) P7 a, B2 f2 w7 A
to go
# Z, {: e" T, j' ^! J2 @$ _
# s- a/ }, [4 t& E9 {6 Z* ^ask turtles [do-business]

  Y% X9 S0 r9 Z/ yend. i/ _  }8 u' E% `

) ]: p6 y0 ]3 Q! V! s; y6 \to do-business , v& Q. @4 e& V- t

) x' r- Y3 ]( b2 D  B
, v2 a# R- h+ \! B  Vrt random 360
( |" W2 ^1 t: z7 M7 f4 ]" c, F9 p

. U# g7 h: i/ A! Pfd 1

  m" C$ ]1 f1 d1 J. j9 G0 G! r9 u4 }7 Z# ~/ \- [- I# [. ~% d3 n
ifelse(other turtles-here != nobody)[

# a* i% V+ `7 g6 V2 a' [  l7 c/ W$ T5 F. p. f0 \" N  x& f+ c
set customer one-of other turtles-here

2 @! J- y! j3 `0 W6 ~! b
7 g' u4 ]6 W" i% B1 `3 O5 X;; set [customer] of customer myself

8 W- k1 e* w- M2 E" z( w
1 W7 h# z9 W+ P8 a; y% P4 R1 F# yset [trade-record-one] of self item (([who] of customer) - 1)8 x( ?% s5 z6 H
[trade-record-all]of self) b* v  d6 g5 h0 Y: G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

1 E+ Q/ d  @6 l3 A9 e* \6 U3 j! C2 L' A3 \
set [trade-record-one] of customer item (([who] of self) - 1)
  w5 B4 g( @6 A- U$ M[trade-record-all]of customer
. X' G# i# d( K: W

0 g1 G* W& r4 D0 q7 r+ j2 ]% }set [trade-record-one-len] of self length [trade-record-one] of self

) a. W! C/ L1 P6 t. G
0 Q; U0 G1 v+ Z' m$ d4 Uset trade-record-current( list (timer) (random money-upper-limit))

7 d0 g- u3 N% {& \2 V4 c9 q( `+ m! a$ g# |" B1 {) J
ask self [do-trust]
* G2 ?$ [- A  w. W+ m;;
先求ij的信任度$ `8 x7 L! S* S& T
! w1 q# `, J  {+ U. z0 r% s/ R+ C
if ([trust-ok] of self)
1 K# m3 s8 C- K: z2 M" ?# B5 j5 N;;
根据ij的信任度来决定是否与j进行交易[, F- f0 `7 w/ Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 Y( M2 B6 `# {5 J/ b: d

" m. }7 e! ^2 C8 N- ~9 w[

% G- ^+ s: \: D! H3 o% [3 n) x+ y4 w* O
6 c' T+ N  w3 `, x) ~9 k# Hdo-trade

) l# D1 Y, k% i7 B8 G
* n- ]6 x8 W% O! i, Yupdate-credibility-ijl

; u( d: u, d2 I6 N% J7 K: W) e5 A  a# h$ l* U; K
update-credibility-list8 P" ~0 G5 G& `" J
) J- m9 h( I% w, e* L3 z% C
2 b0 q9 h: N( W+ G
update-global-reputation-list

' j6 R) V' N! Q  h4 m! ?6 e: K, r% O6 p+ e9 z2 m
poll-class

# B; K3 Q- c! u! B
2 I: h& ]4 B, n) ]; pget-color

1 j, u8 j' V; m2 R' H) b
8 @2 b' E. w. i+ {& }: ]) \" g* A]]( O2 \. ]2 H7 q4 d6 s: ]% i$ M7 _

& V* N0 |' i6 {; N, \; K;;
如果所得的信任度满足条件,则进行交易: d1 h) l1 D  p: Q8 a) Q

8 ~# l2 s/ K6 |. _[

, ~) y; N; f+ X+ w) w3 Z% {4 `
; \, F4 B9 K0 E- }rt random 360
! p' p: H0 C: W- K
$ Q7 r7 x1 }! q
fd 1

3 C5 T3 K: w3 J; r& L! L  b7 V# `( f- y" h/ y& c& Z( {
]
, p) Q# q; k2 x& @9 L( i# g+ w6 G9 N; O
$ i, j1 E$ s1 a. R
end

- X" Y; j# a$ \7 m: `2 P2 \( D% l
! b' ~/ U) o- ?( L. k8 Qto do-trust 6 F5 u2 h6 l' ~! y
set trust-ok False
8 k0 _2 n' D! D; M! G# A+ W0 H" V! v; h" r5 d& i. \
$ r% [+ R. L$ i) M. L$ ?
let max-trade-times 0! K( c7 ~; U! W' J5 X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! u' `4 P. h5 F) e* `let max-trade-money 0
  c5 r/ Z/ e* g% ]" S8 G/ ]' ?foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 h% `/ N( d5 @) B4 u
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)). l6 M& H- j. \/ r# p

; N" R$ [7 I% Z" K7 C8 G

. v! Q- |2 s: v: I# }get-global-proportion9 Y9 t/ Y, ~; K- F; l( H
let trust-value
5 y9 c7 A. C4 ~! P% N) qlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" ?. {3 J( y9 k6 R* D  X) I, A
if(trust-value > trade-trust-value)
& _: r8 q5 @1 Q; R1 Q[set trust-ok true]
+ O0 h8 ]( i, X9 Q: ]7 W) K; gend
6 t' U) b& N+ H1 c' J
% a( Z" D4 Y' M- `+ mto get-global-proportion7 [) p8 I% |' g, g2 N0 N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% a9 D+ p/ {7 i+ c[set global-proportion 0]' Q1 w8 ~1 J, |  c* i7 n
[let i 0
" D- e# @; [& Q6 [6 ]+ s' ulet sum-money 0
: P1 K5 e  t4 U* J9 m; rwhile[ i < people]' t: Z( [( n9 E) P( I9 T
[
% t. n/ `7 r2 a3 T/ Yif( length (item i! ?! X; X/ @# Q
[trade-record-all] of customer) > 3 )

6 g! ]5 {  ~7 o4 S[
6 [/ Q, H& A) b2 eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ b, F+ V8 q1 A4 o1 f* _]
' t+ j5 \/ O" ^( k/ B" u* g' c]
6 F4 G  Q( i8 N' q+ ^8 M* V( plet j 02 S: ~9 N2 j  N' Q
let note 0
5 T0 p& y# v. _8 ]4 O+ Iwhile[ j < people]
1 e7 c3 b; g3 g8 v- Z' p[
$ @6 ^) `& R$ [. tif( length (item i# i8 V7 @" t2 b8 e/ Q
[trade-record-all] of customer) > 3 )

9 ?( k5 V4 l+ i: |) s: x" g, J[
7 i" G1 L8 P' b  Bifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 S1 D* A; O$ L8 Y3 b* Q  A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 f8 ^& u6 j- q+ C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 i$ [7 F$ f/ E; R% X% v  B0 }- P]
3 ^0 }# x! g& b- q* s* N]6 `. o' u6 r3 x
set global-proportion note
3 Q( V, V7 z2 V7 w]
4 j  {. G' _% ^; @9 J0 @( Dend
; |2 O4 e$ t& l* T  M3 ]* @
, ~4 ]) d$ Y6 _. E. @+ ?6 Nto do-trade* y( D+ F/ w  W0 P( w3 V, t6 [
;;
这个过程实际上是给双方作出评价的过程- b% a% W+ h9 Z) c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" ]: f. w! L9 e
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 `" p7 ^+ Y" n* G9 |) k/ t& T
set trade-record-current lput(timer) trade-record-current1 T3 K' ]' _8 o3 S( i
;;
评价时间! Z6 d8 @9 B- Q) h5 o4 L
ask myself [6 z  D7 w. C9 Z: w, U
update-local-reputation
9 ~! B' Y" x, j$ ^0 y1 H% Jset trade-record-current lput([local-reputation] of myself) trade-record-current; V' t$ L6 l- q' i: T
]
: V' @' ~0 M3 s/ U, H# P) d: [0 h( Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& @5 r9 x& |" }( E
;;
将此次交易的记录加入到trade-record-one5 a% I( d6 d, |+ U3 i
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ h% y8 R; C$ c
let note (item 2 trade-record-current )
8 u5 r# p- m  H  J  p' {5 hset trade-record-current4 c7 e* m) C8 h& ?. C8 P* `0 A2 t
(replace-item 2 trade-record-current (item 3 trade-record-current))

# I% h2 `  b0 M( N, G+ Yset trade-record-current
( z& Q; Y, l1 r) |# E# g(replace-item 3 trade-record-current note)
8 G" V+ h, p* Q8 e0 m
1 u8 C0 D5 u) R7 f7 Z! J0 D

$ H0 |" \+ \8 K! y! @2 task customer [# Q% i0 q: N) ?8 f) C- D" l
update-local-reputation
0 v, ]: K( j, g) k9 X6 D/ C6 Fset trade-record-current% f; W9 d7 W& J( `# \$ ^
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& c0 n. K) W* d1 V$ R8 U! ?6 J]- l# ~( _. [2 z
- L: ~& I; V) f8 }1 N  `3 Z

# ~+ D4 ]4 W) n4 X# }& lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
* q1 Q4 H6 r' j3 M" Q; C5 n

% S" o% a; E) c8 nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 l0 h- F; I+ i' @& `' \# q;;
将此次交易的记录加入到customertrade-record-all% W4 p/ i! t8 N- f+ ^: {  m# o7 w
end
0 N6 d, ^/ J, x% i) {
0 `+ E+ {: a0 s- A% _to update-local-reputation% d/ L6 ?! V5 G# X
set [trade-record-one-len] of myself length [trade-record-one] of myself
+ C& x* P- [6 b+ M) j- `' _: D$ g5 T
7 L( I! h- i, ]/ S+ A' V2 V
;;if [trade-record-one-len] of myself > 3
3 W7 L4 a7 r0 ?
update-neighbor-total: l# Q" e; s% U) P6 _3 Y, B
;;
更新邻居节点的数目,在此进行; w% [" z7 W0 }' @7 i4 F
let i 3
3 @/ U# L$ |# H: x3 vlet sum-time 00 z7 Y0 B# c) f! l
while[i < [trade-record-one-len] of myself]$ c! K  x9 m$ C& A8 U& x% _
[
& D0 b' U; _2 Y8 J/ Y7 q6 M9 zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 t: l1 q( c% Z
set i
6 N" q8 {: E" I* `$ S( i + 1)
+ [0 \2 p  @6 p$ p1 y, E  I; S& n$ o& P
]( T. N" _8 J. x! T/ v7 M/ D# G
let j 37 f$ z0 i( M# Q+ r
let sum-money 0
; @% {( A$ {- cwhile[j < [trade-record-one-len] of myself]2 l$ P) j. I% I! s$ v( y
[4 \+ R4 p% z7 N0 p) i4 F! x
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)" h9 ?( l3 G0 g. M: O
set j
2 ^. K0 a6 G) E) s7 \3 h( j + 1)
5 n  L7 c- G3 o; F
]
4 f7 j+ v( a8 `4 I3 Ulet k 3
3 y" l6 V$ Q# X1 Dlet power 0
) L. B' v4 _2 }6 [let local 04 F: J+ ~3 U# Z% R1 ~* y
while [k <[trade-record-one-len] of myself]8 {# F6 F  r4 i( s" S, n
[
- K& ~1 l* @5 B2 s& `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 S  ]8 \/ ^  u( d
set k (k + 1)$ |2 G  W7 t, @# `
]
, ~, d: e1 M; a: d4 X: ~. u( [2 Mset [local-reputation] of myself (local)
: Z! o& W8 T" g) n& Wend& c* A; M, k% b. n, D8 F1 R7 y: L" O6 k

# N: b- L6 F' ~0 Q0 Lto update-neighbor-total
4 B+ e* C* O9 J- D6 Q; Q' X9 k3 y: X" }4 b  S3 @
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ w# G. F9 @" H3 |( s

6 @; A  V3 h3 X6 v7 Y4 }7 x
; y3 v" |% S5 ~) p3 |
end
# Z6 P/ p/ C  l; r) C6 ^. V' v
4 U: n; Q, \) x0 c2 wto update-credibility-ijl : _; f7 ~: S* W8 g& O' V1 ]
* j& [# j2 a, o; m: d
;;
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。& _' \1 W# n# W" K
let l 0
, ?8 r9 d( x; I  ?while[ l < people ]
, u: ^  g8 i& g2 Q* R;;
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1 c% C* P- O" a2 }2 M$ R( Z
[' \" [- {" m' o9 t3 H
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 V6 p7 ~4 w' K; S& Uif (trade-record-one-j-l-len > 3)
$ c5 {& Q% ^* 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) Z6 z6 G" v+ q3 ]* t, d  N3 t
let i 39 J7 u. w. N; P9 R7 b
let sum-time 0
& H" D: t' ]4 P( H5 k( Z7 B; xwhile[i < trade-record-one-len]
# ^  ], R7 t4 k8 t; R" p[/ Q8 E& A+ g  O0 h6 ~
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" x& V  U" a( w2 s( C% l  jset i
& ~# Y3 v, y8 O! v7 l' C1 F( i + 1)
9 M/ y0 Q5 L) A5 r
]
0 Z5 M, z( e% s8 K" \6 Ylet credibility-i-j-l 0
- _8 Q: x8 ^$ E5 h4 z5 z;;i
评价(jjl的评价)* C7 a. S, P/ k5 c8 R9 n2 b
let j 3
/ y- Y' X$ ^/ i: d# A0 O# o, ~8 i; h/ Wlet k 4
" `" }/ ?4 Z# w4 {2 m' z. wwhile[j < trade-record-one-len]7 C$ n9 M* R$ u' ^" D3 K
[; P4 Z$ C# n6 C0 a; V# S3 s% Q
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
/ d9 E1 {$ D% K# cset 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)
9 `& o( i3 _" f3 Q5 f6 \set j
$ r( A! ]& Y7 ^/ @( A( j + 1)
: I. t( M3 ^+ ~. G
]& a" N/ c/ s  ?1 n' f: g% o
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 ))
2 w! o$ P+ L4 g" G1 q* W
: {' r& T8 {9 r3 [( U

  }- w5 S: E. h7 wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ Z6 t6 Y" d* \4 o& ^' k6 F;;
及时更新il的评价质量的评价6 o+ ]; T/ ^9 O- B
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ j  n1 k. `& W4 ^set l (l + 1)$ ]- ~, v. P& ]. T; n7 b8 r2 }
]
: {( ^, Z% Q" y% _% E6 H' Y% D; Yend
' x* n3 B5 S6 E$ ]0 D5 c9 v
! D5 Y) ]$ v: P" U; u3 hto update-credibility-list
' i+ v3 K% T. klet i 0
3 V. Q& b  d: c/ y+ `1 Xwhile[i < people]
+ X9 m% |$ U6 w. E, q: e/ M[; v$ F- u' C& W0 U' k
let j 02 A' L5 q1 A: A
let note 0# c% T& ]( j0 F& Z& x# O
let k 0; i: V! `8 B1 @8 |! M: P5 b
;;
计作出过评价的邻居节点的数目
: N5 M( {% h  W6 `( Ywhile[j < people]% g2 Z! s0 d& I0 Y; s( i% I
[! A) m+ p. ]0 t% I! f
if (item j( [credibility] of turtle (i + 1)) != -1)
) a( n9 @* z7 p/ y8 X( j;;
判断是否给本turtle的评价质量做出过评价的节点
- F3 y5 S1 N& Q  V4 U7 J[set note (note + item j ([credibility]of turtle (i + 1)))
( g! U  _7 G# k$ G0 w  ^4 t# d;;*(exp (-(people - 2)))/(people - 2))]
# D' J9 }8 K0 |5 `1 D. s: p/ L
set k (k + 1)
; l7 @" b4 {& u# j2 `8 U]- n1 l) y2 H( c8 o2 [; q9 W1 L' J9 a6 t
set j (j + 1)
7 {: g2 M* k, S], Q) ~; \# m% g, Y2 D; K
set note (note *(exp (- (1 / k)))/ k)2 ]. Z7 u4 ]$ K  c: H. I0 B
set credibility-list (replace-item i credibility-list note)
' g1 x  v# o/ _/ mset i (i + 1)
5 q4 ?3 Q: `  {]
1 k: o( H4 o8 J# E4 x, I% C/ w2 dend
1 K% @" E6 y2 z; `3 p/ R+ _% T1 L" V' ~3 w9 C- V
to update-global-reputation-list
* l* o5 q  c5 M# E% Y: S- s- u2 B6 dlet j 01 s$ W% K2 ^9 q, R( {
while[j < people]7 W4 x1 Q* [* O6 y' u' y8 @5 N
[, P2 F2 ?$ b' f
let new 0
# s4 c  w; d+ `;;
暂存新的一个全局声誉
1 X" S1 P3 j5 u1 ]& U3 _let i 0
' z) C5 f) E, ~" R# n$ R; O) Z. g9 mlet sum-money 08 M3 {$ S% m6 f; x9 J
let credibility-money 0& R& v% [# m  |8 w2 ?
while [i < people]
( O$ ]. M, m; j& e) T0 C9 Y) |[1 B$ k9 g( A% g& N9 U) U# ?% v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* F9 ]- p6 I6 |  R3 S) f6 @set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# ~5 t" K5 L* p9 K2 i
set i (i + 1)
& V5 o6 ~( q; j0 F]
5 s9 x2 t9 C) x; N2 d5 zlet k 0
. h8 H# z6 [- flet new1 0
* z" g+ T+ c4 Z/ E$ N1 vwhile [k < people]
1 }* U$ D) c' {8 F6 V$ f2 V4 U5 |[& m: @+ P9 k% l
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)
$ I# F5 q9 |5 L2 f" b/ o! J+ Cset k (k + 1)
5 {; ]6 `+ }1 j$ O3 w6 F& Y; Q! d]
- b8 D6 @& T; M; yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% x. K+ x# {& {3 ]9 S2 x+ q2 dset global-reputation-list (replace-item j global-reputation-list new)
9 Z( R2 K( D" j: n, Y0 r) R4 O4 fset j (j + 1)
( i7 t# D# X' f* i; H]
% y5 V2 v+ U3 y7 i: S0 K  ~end& x( U) O7 f. H& P; t0 Q. `, @2 l
1 o% e0 _7 z! {9 L( S& o
4 b; Y$ o& c0 ~9 a
+ a7 t4 Y# F- c
to get-color. B. T( [+ O6 ]4 S3 [4 {, ]

6 A0 H1 d  _7 o6 e; a  {3 Wset color blue

+ m4 `/ V- {" |: J5 g) \end1 D: H6 h) P% h  R# ^* q6 s5 f% q
& e3 ?4 v/ U3 C# S
to poll-class
; F: p6 U, W$ F. G! s/ k9 zend
. G' Q4 t; P8 G" Z% b' F3 w2 `0 B+ ^6 q  D8 X5 l5 V& a
to setup-plot1& C! P4 N' \# S9 O# T2 k! k

; ?& E. V* o( L+ y) @- X: Aset-current-plot "Trends-of-Local-reputation"

) G( h& {" R7 m4 ^  e
- K7 M- K9 W( v$ c* nset-plot-x-range 0 xmax

& i; h# ^0 |! P2 _
, r. Z6 j7 R+ wset-plot-y-range 0.0 ymax

8 V" I: _( n3 ]3 N5 `$ i. Gend5 h" C2 S" @( P5 a2 _6 w$ ]
0 O+ B  v" O( u7 G' o# `7 q! ?" y- a
to setup-plot2
7 Q+ c; n' l& G  f0 Y' f; Z' J; t, x- x0 C& a0 g
set-current-plot "Trends-of-global-reputation"

, ~8 `1 u$ j/ P0 x" ?8 @" e& |1 V. G/ b5 s' L& w! {
set-plot-x-range 0 xmax
% ?# S) L& Z9 l- c/ O$ ^

9 X3 T) Z, m  W( I7 {$ y, _0 `set-plot-y-range 0.0 ymax

: |8 t; w9 b/ W& x6 nend
$ Z8 q8 m/ J( G6 U8 R
5 |4 z7 `2 C3 c1 k% S* [- I5 V' M/ fto setup-plot34 Y6 I2 U% E! K1 v: @1 d! S0 M
% P3 x7 t# P4 G$ Q
set-current-plot "Trends-of-credibility"
3 {' a9 p: A- V% O" W

" O# C, e9 E. z! r2 n$ Vset-plot-x-range 0 xmax
6 M) I" _, z) U9 U, S5 J* Y4 n

- ^( V4 ?8 J! t: z- B; iset-plot-y-range 0.0 ymax
+ T4 q* F; L5 S& A! s
end
8 ]+ F2 j9 @& b4 z3 b$ ^7 D- n  }0 g' t5 {0 Z/ @, `( y1 Q
to do-plots
2 D( S5 k1 ?) y/ O- Aset-current-plot "Trends-of-Local-reputation"4 E* m4 P$ I$ ^  |& P1 r5 v: ]
set-current-plot-pen "Honest service"
, @) G* K4 z  j+ dend
# h' C8 P' P! K# |3 l; c
: o% v0 J4 M  A9 c- B[ 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.
' D, H( w0 q  f! w3 H% m0 x& u) ~7 {9 x! E
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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