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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:0 b1 H- m+ q5 A) e/ g( c
to do-business
- q/ d# I. y, }1 a3 B rt random 3602 G/ f4 {6 R  N# ^% ~  o
fd 1
& l& D9 N$ U/ I. M8 F; y6 P" H ifelse(other turtles-here != nobody)[8 H& ]3 I) X, [" F' I9 h' J6 M9 V1 Y
   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.
8 N4 A2 Q+ V# h4 s" `% X7 x& @   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( U, C, }) u) L/ I& [# C  F; y# V
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, J1 \7 i$ I5 }% k5 o; p% Q' P   set [trade-record-one-len] of self length [trade-record-one] of self
* K" v/ s+ l7 p, z   set trade-record-current( list (timer) (random money-upper-limit))% F0 _2 J* X" u
9 a; V7 \$ _. I4 Q
问题的提示如下:" \8 l- v  U* Q( V# s9 ^

2 e% A8 l8 L2 n& @- Qerror while turtle 50 running OF in procedure DO-BUSINESS2 \6 H3 I: h7 ?
  called by procedure GO
& E" i5 i0 P1 h! e" e( G9 j  hOF expected input to be a turtle agentset or turtle but got NOBODY instead.
, c! p1 r! v$ h8 a( f" Z  H
(halted running of go)2 \* l. W% o$ q3 Y& h2 P9 Z& t' a

) o: y9 @9 e  f- t" T; b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~~* m+ b1 ~3 f) {& c
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8 V+ p) j5 R; ]& F' H6 F
globals[
1 n9 m# u) P3 M' L+ f" g5 H* r1 q3 Hxmax$ h# G8 d) I+ a( a) K! I; O
ymax
, U' m( }( t$ O2 s4 xglobal-reputation-list5 C, M" T, ^% Z' F

! a7 N3 c5 J2 A3 \/ `1 f$ X;;
每一个turtle的全局声誉都存在此LIST2 _& c! c; T- [2 |( m% u- a* u, I) `
credibility-list% K. m, V, X; E) c6 s
;;
每一个turtle的评价可信度
- s; F, Q% w4 U% ^honest-service
  K4 E5 W  k. E$ L% }unhonest-service/ a- t! B" J: i5 M
oscillation
( A7 v+ G* O' y' s* H* hrand-dynamic
( e+ f, e1 K* }]1 n8 v8 M6 G2 k

, |7 r3 u2 W! c& t7 \( y3 vturtles-own[- M' V7 ^  l/ Y( h
trade-record-all1 E9 X  x: a8 v; w
;;a list of lists,
trade-record-one组成* Q( K+ n4 O( \8 ^  H
trade-record-one. ?+ ]9 B0 G' B  ~+ N$ V7 {# Z. g9 Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 p. N( ]) }) Q/ B1 n
/ g3 I+ u) W7 k2 f: S
;;[
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]]5 ^/ a6 |5 {4 G$ }6 I3 m9 _+ W, y: _+ \
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]
- e* h9 c$ s; B; w7 Wcredibility-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 [6 j: [* E9 ~7 ~* C0 q2 w- Yneighbor-total* F4 e1 p0 y; K( O  {4 v
;;
记录该turtle的邻居节点的数目
3 ?2 B! a& M, t, N& j7 xtrade-time
, C+ e" F" H& x$ d0 k1 a;;
当前发生交易的turtle的交易时间
* T( T- p$ L$ o8 V* Oappraise-give
5 u2 G. ^* x/ ^3 P+ H9 Z;;
当前发生交易时给出的评价
! j0 V2 h- ^* B. K: F/ z8 dappraise-receive
" Q* }( S4 w1 V& c  {( Q0 ];;
当前发生交易时收到的评价
5 J) e3 s  o  P& v! ?% uappraise-time5 y, [1 U' z  f2 g& a* }& o
;;
当前发生交易时的评价时间( Z4 [6 U/ p9 s+ C2 ~& |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉% J: W1 N( t# J( x
trade-times-total
. ^) K9 A5 s9 Y( X/ s;;
与当前turtle的交易总次数
" _, E3 V8 r5 a' ~8 Otrade-money-total
( s5 a3 a& n/ c6 h' m/ N4 U;;
与当前turtle的交易总金额- w2 _4 Y+ e, [& l3 y  X; i  B
local-reputation
: |" c( O! R; A$ i0 Vglobal-reputation1 s4 V. j; }7 U, E5 A4 I' G
credibility
% ]" n: }7 X9 D3 u/ l, K;;
评价可信度,每次交易后都需要更新
$ P7 K. R8 b# e- L3 x+ Rcredibility-all
0 r. ~: p8 |2 {$ F5 `6 L;;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
. z' [5 [5 I2 T+ Z1 U- s, q) ?; j! f# _/ T
6 K3 ]! n7 f6 T) y( D5 S;;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! S  w3 p' U5 J6 i9 ]$ K
credibility-one# i, {8 k% j* _; [! 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people
3 F6 h" g  b! j! f5 s+ fglobal-proportion! q' q7 r' O2 {1 R  g
customer
' V( J! F" |5 |customer-no( ]) W4 B/ t+ x  ~5 W
trust-ok
' g0 Y8 x8 h; H& D7 n$ gtrade-record-one-len;;trade-record-one的长度" ?- I, _$ x7 d: U4 e
]% Y" ?0 C( q- _7 p: `" }+ G/ Y! A

: i8 S( q2 y! c$ G;;setup procedure0 ~2 n2 O) @; W) j, c; s

( B2 z" [2 M) u  c5 o4 mto setup
/ y7 h  N! u$ n3 [% ^" @5 y* Y$ e6 h) ~& `! H7 ?8 l: D
ca
( ~7 r1 T& x! h( x- p' x

0 G& m4 x' J6 E' f* ~: ?initialize-settings
* i4 c2 A0 j8 Z
1 v/ g) L1 b3 Q9 x. A* r$ o
crt people [setup-turtles]
7 L& K; C1 Y' d( m, b: y& w

0 r$ C+ I' ^! A2 Nreset-timer
, J& ^/ j' E: G

+ P; o. x8 w; s5 ?( Mpoll-class
+ ^. I7 C" z" o$ G$ g- p

, O! i! j; q- H, C2 r/ Vsetup-plots
. {7 o8 D8 w( I4 O" Z

5 `/ c1 h4 T" V+ g7 k0 x# D6 zdo-plots
7 V, I$ Z9 ~  l6 Y1 g+ d
end
& {5 L2 j& ]& b! D2 L* ^! ]' \! n" P' p8 O
to initialize-settings
! `5 S6 g6 g' N5 @/ M( D9 T; k$ }$ X2 _: W' ~: L' X
set global-reputation-list []

  u; M8 z& ~& z
8 Q& @9 D4 ]2 O8 l5 A( k' P+ `; qset credibility-list n-values people [0.5]
$ n1 @/ j0 \2 h7 H5 g( S
, ^  j" {3 ~, E; `8 _6 x
set honest-service 0
% C: _# n  m: k! p# D" j8 e" Y

( j; i$ ^) e. N5 h" f- Zset unhonest-service 0

9 r+ v' [9 B$ q6 o# A4 c, a  Z: g3 ~2 z8 n7 i; |0 c4 E: D
set oscillation 0

2 A* k- M/ ~; e3 P, d; G* k1 @2 i- `/ ]2 l8 J/ c7 l
set rand-dynamic 0
: L/ f% Q+ W- M5 X! c2 Q; `
end/ O9 N% ~9 X/ U. B) z$ [
3 ~3 j9 D6 K& R' ]- B9 [
to setup-turtles 7 j. }) c+ e8 L2 y/ J
set shape "person"9 e2 U/ o% E1 X, {
setxy random-xcor random-ycor  o8 l# Z; u. x- O+ u# }& V0 B
set trade-record-one []* ~8 B' M" N! b3 E- S
+ W  d' {3 E+ Z
set trade-record-all n-values people [(list (? + 1) 0 0)]
* Y/ j2 `9 e! M# D2 Z5 _: F
, M7 O- e4 Q0 e0 W: t4 x* I3 x: a
set trade-record-current []7 s) G3 t6 p: `5 n5 q
set credibility-receive []
. K/ J4 l$ g2 G+ [2 P) B- p1 m- Jset local-reputation 0.5
( a, J2 X* a$ ]& l! _set neighbor-total 0
7 |; O- y7 l) |& V. v( X# F2 g7 Bset trade-times-total 0
, D, @1 @! x0 Mset trade-money-total 0
" }+ j. k1 M/ U/ F4 I$ aset customer nobody
% p8 K4 }0 y' x+ |set credibility-all n-values people [creat-credibility]
9 {* |, C. F3 v8 D; g) u6 Q7 V+ `set credibility n-values people [-1]
; S# P" S- Q7 Q2 ~6 c# |get-color
( d' R6 d5 k& C. Q  |  [
1 o$ }+ p' T. w# r! r
end
& O2 ^# |' z: Q9 g
. [8 [" M& }, l/ d5 I9 }% Qto-report creat-credibility
' P% U* ~9 E' N+ K+ Treport n-values people [0.5]
+ n4 c8 Y: [* [. h/ Zend
2 j5 v- g3 E- u, \* g; a* V' b6 Y9 L9 q( w( l
to setup-plots
; L, [3 S, Y+ M* o6 Q& }& {! I; B3 O4 b/ y( U7 h" N
set xmax 30
2 n- b1 z) [! J, v

  h* A4 U3 O* Y* B) W/ l' f% tset ymax 1.0
% K# g  q+ C5 X

  u$ _7 B4 E3 Lclear-all-plots

% w$ q  B$ n: ~2 p( W' j5 w$ b3 b* S3 D: @$ o4 O
setup-plot1
( q5 @( s# D: P! W4 m- ]
, r0 C5 g& U! P) L6 x
setup-plot2

" T( G1 z, f" N! {) B# d
" w, l. k6 C2 }" j4 O4 Isetup-plot3

! U5 M; k; O2 b$ r7 ^# ^# cend8 o0 y7 |' N+ H* N

) z+ |. @! Y6 R. s$ x1 x7 w;;run time procedures
" g) h6 @8 M; i% l
6 r3 p! p# f) r% [! H; j9 Wto go2 m/ Q- Z; b. ]! L& H! ~4 L* K1 ~1 a

8 ]6 S8 f( p7 a6 L, P; Hask turtles [do-business]
$ A; x6 x1 Z; Q; c: Q* v3 w
end# v# m- Y& ?& ~5 F

" ^, H0 V( W) J6 I) C! k6 |* R$ Wto do-business
8 k% j& R7 x  F
- S+ w9 A+ \5 w6 b5 v0 X
4 I  S" ?. T" H+ i) R3 @6 O
rt random 360

6 w8 m$ f& Q( u) u) d9 k4 b9 [1 t8 H4 G: B' o! e: _9 d, T
fd 1

- |! H# p- j; y; b7 Y- l% f" c" z1 G8 c" ~
ifelse(other turtles-here != nobody)[
& a* I4 }: ]' v# B2 V  A
5 e! q. W. x1 T1 W1 U$ C; }
set customer one-of other turtles-here
0 {$ d3 \; n) R2 C

/ y6 n( D/ [# X5 s5 G! P* d0 N;; set [customer] of customer myself
% X# m3 {+ I7 H% J3 v' h9 N
- F  e$ z8 W9 a; q5 z$ P
set [trade-record-one] of self item (([who] of customer) - 1)
; i" M$ t: |* D/ @4 ]4 i3 \6 D[trade-record-all]of self
1 n! I4 F) S/ g) B6 `3 @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: N6 j4 O. y( A* Y$ T
' e0 K) k3 U5 H7 v7 p' q: `" W* wset [trade-record-one] of customer item (([who] of self) - 1)
$ {0 k4 Y( h. `[trade-record-all]of customer
; v- P9 s1 @/ @' w) c7 Y4 k

2 w2 e- h+ r4 k. Tset [trade-record-one-len] of self length [trade-record-one] of self

9 G( F9 p: x" C: ?" {  m" I. _  \. H/ c
set trade-record-current( list (timer) (random money-upper-limit))

( l+ ~% @5 P$ Q8 n- {; ?2 k7 ~
. u# Z; R7 a2 r: Xask self [do-trust]$ B) H  G% O4 V6 `! _
;;
先求ij的信任度6 ]1 o9 l: a4 S$ ~( t' o( m1 A
# Y; N1 U7 x: f4 u1 Z8 F
if ([trust-ok] of self). a9 B6 o+ J, P1 z  q  h3 q
;;
根据ij的信任度来决定是否与j进行交易[
, d' \6 C; H* F1 fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# x" m& A) D4 ~. l' W5 n- n

# a+ c3 y4 M) l4 g2 `[

* G# U$ f% v+ O/ d7 a8 a# S; h3 g! h) K! b2 i  R+ B
do-trade
4 C0 Q, o+ t9 ^' y* Y5 ^

* h/ W3 w* C5 d, {2 ]8 \7 U3 fupdate-credibility-ijl
( B% b& ]$ a+ d( s4 b2 I3 I8 R
# ~  _( ^' B! [; z  F0 a' k2 N
update-credibility-list- O1 v5 @5 g6 X. S
; R2 S' F5 w" W$ k2 O
6 J# C5 Z1 F$ D# D: N9 n
update-global-reputation-list
( r3 h8 q. h0 g+ c, m! V8 K
4 v+ R9 @( z2 A+ w' `, |
poll-class

: T1 T$ M* j8 x! s0 V0 M' H% P( o& }/ _% {0 e4 [8 w- B$ p
get-color
" |1 z% j3 r( `+ Y% y8 A* f

. \9 x/ x2 y: _]]  d8 b& O3 ?; n$ ]8 [- f

$ V) r$ R: k% N7 A% a;;
如果所得的信任度满足条件,则进行交易' e" f) x, r) N( L& q( F! T
0 k! d+ Q: K* A6 }- c& N
[

; e# b) v; T9 G, p$ x/ o3 r3 I0 j, p# l3 B
rt random 360

) I. r8 Q1 P3 \% l. L. o% N
* s1 H2 g- G& N& u3 q% H" v4 Jfd 1
  [$ P3 s4 S2 Y/ C6 s9 A

* W0 ~* H0 w$ s6 C]

# b  t; P4 u: r) ~$ o' r/ a: T* s
' u* t/ O( S, r* k6 E7 E6 G5 p8 o4 eend

# s# c& @5 y1 z' z- P9 S+ r. P. ^. r- a: h- m, M
to do-trust
8 @# ]3 }2 g: Y+ m3 Y- qset trust-ok False
3 @* ^6 V) J+ x* e
1 p3 _- B; n8 A/ U! G$ u. q
9 I6 e# K* Y, p2 T. |
let max-trade-times 0+ v. l; K; g9 @2 J7 K; O7 T+ _" c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- |& Y4 d! _" @. E/ T+ K% M7 S: W; E5 m
let max-trade-money 0# \1 @; [$ C6 ~- P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 W7 N  `5 S* c8 \9 C+ g+ |0 o
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 `+ w* J- o# U+ z" ?

5 J6 ^% J0 U$ ], I* r! M
3 O/ }0 E$ y0 e9 l. @
get-global-proportion
6 y$ c, {: e6 C5 Y  @let trust-value8 d( U( E, U9 s9 U4 ^7 p
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)

, Q2 ]& b  X$ k# y) @' @if(trust-value > trade-trust-value)# d( z* D; g5 n3 G# M
[set trust-ok true]
$ Z$ O8 u, l) Q5 Y. Jend, S. |3 E) ]0 o, s1 d3 e& i& {

7 X+ g9 ?; @4 |7 O3 [to get-global-proportion
9 u% k, H7 c# X# `( W' Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( T6 W* J7 V( W- E) J" z  e% T
[set global-proportion 0]
5 w8 i. c5 S3 T3 }6 Y! U[let i 0* [( F7 P6 m, n2 G
let sum-money 0/ Y) D: \% T4 L% E  Y
while[ i < people]
/ h& y  X1 g# [3 c( k[/ j. g2 q: a6 j
if( length (item i
. A5 g( T9 ~+ R/ P[trade-record-all] of customer) > 3 )

5 Y' p: B) B! x[
) G# h: ]; i) \9 C4 D3 ^set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. @1 D4 o8 r/ c- ?1 q* R0 Z]0 [# @+ `' R  R
]
  e" y1 r  e% ]let j 0' ~% V: n  p4 X: n  n* ~. \4 @. b
let note 0
5 C, s0 F  n. P& e; I8 O' Lwhile[ j < people]
1 D! e0 R& T$ h5 `4 i0 G[
$ j: X% ^. ?9 k* }5 fif( length (item i0 {$ d) g6 o, \3 p+ K! w- }
[trade-record-all] of customer) > 3 )

7 a3 K5 o8 Y. ], h5 u( y# }[3 j! y4 M+ z. }. l" d& B9 M
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 t7 W- x" R! N3 c5 m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* J* l" J6 ]/ h
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 I  E9 ^+ j8 X. m* ~& v( B; d. E]- m9 W4 m. D( T! f1 t( H, Y
]& w/ w. T0 M5 e7 w3 V
set global-proportion note, ?+ c, z! l8 b& J
]$ m  [2 b: [1 h5 i8 V  H2 G. h
end; e! a" B( w2 W2 C
; T2 C, W  o- N$ d$ ~  Q) j
to do-trade
1 O5 @- C+ [5 b9 z;;
这个过程实际上是给双方作出评价的过程5 b% O. x3 G, O/ _" v0 R7 {6 U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& J% O5 K# Q* n- a* }2 hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ ?; x+ l* }9 I3 G- _3 qset trade-record-current lput(timer) trade-record-current
! \0 i% |5 I! i2 y! q7 Y;;
评价时间* E5 ?2 \. y. G- k, K
ask myself [& j3 x# s5 ]+ s* r# o8 l
update-local-reputation( ]% K- M4 J, {# h4 w
set trade-record-current lput([local-reputation] of myself) trade-record-current: ]$ Q: u+ G& ~6 `
], K1 Z9 N1 _+ T/ W$ M
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 S4 u6 }6 |; m* m$ I% w
;;
将此次交易的记录加入到trade-record-one# u' Q% |3 ~( n! U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) u$ ?0 L% s" S$ l
let note (item 2 trade-record-current )
% X( U# Z: d# n8 Vset trade-record-current/ L) h' e6 U, a& N( Y
(replace-item 2 trade-record-current (item 3 trade-record-current))

) \( F9 X' t3 p; |, I9 hset trade-record-current
2 M9 J) [7 @  S8 ^(replace-item 3 trade-record-current note)  ~1 m0 q1 i4 H$ R
$ N* Q6 }/ C/ b: T2 y( d

+ m: D0 z) H7 ?9 r, \4 r. vask customer [
: K" d5 k8 L8 a5 N$ ^+ E. U3 C* Nupdate-local-reputation3 h5 s/ X* }5 B
set trade-record-current* g9 @1 j( z+ h7 v9 I4 F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 a8 n5 I2 e* s( t6 J]
6 o+ ]. b" G' ~' u6 H; L" O5 T7 u( r+ |5 M4 U! ~) @. H& d% }( Z
7 n& d; n* d5 v6 ^6 L8 H$ O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ S, }" t5 I2 k7 }) T( i

1 N$ g$ s! s# q5 M2 Lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% W* g; }1 Z- c7 {
;;
将此次交易的记录加入到customertrade-record-all9 B8 o6 G; Y, @2 ~, H  t, ?0 {
end9 l# S( O+ ~; t3 }' [# S2 l
& W% k3 Y* s# t9 M4 x5 \
to update-local-reputation
" a1 ?! l4 w4 A; _3 u5 {& x! \7 A7 nset [trade-record-one-len] of myself length [trade-record-one] of myself
3 O+ t8 k# k1 j3 m9 y5 v. F; e+ S9 \/ I  ]4 g3 N3 n8 Y2 l  b# M
0 v: a! f- P1 K0 v
;;if [trade-record-one-len] of myself > 3
6 h5 N- a: _/ ]( ~) B
update-neighbor-total$ c: ~1 J3 f# k$ K
;;
更新邻居节点的数目,在此进行. H8 {9 I  K1 ?- c6 `# e/ Z
let i 3& @4 G6 g5 d+ [  d* h9 T% j$ j& n
let sum-time 09 [+ z- ^3 H6 ]4 E6 i
while[i < [trade-record-one-len] of myself]; h$ p! F, {3 J9 `% B% o
[
/ S: L8 F( p& o$ l3 J9 Iset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 A  [# f  c7 Y8 ~
set i4 {+ X% G& F) N: ?
( i + 1)

! y, Z2 o- u) A! r" n  K; \]
1 Z; g7 L( Z  Alet j 3
' Q6 p; s: A& n4 Q; e# O. F* Flet sum-money 0
6 T# a3 }/ s+ Cwhile[j < [trade-record-one-len] of myself]6 s8 y; A* _; D3 N  Q
[/ l; m7 C: x) S% [- G3 \
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)
- y' x6 R; m1 m) G/ A. yset j
. ]  h1 C" l. A1 e5 y. S( j + 1)
3 U6 V* }1 u! ^5 ]- Y" L2 R
]
0 ]6 r) Q% Y9 }& s. \) m9 o! dlet k 31 M/ Q- a9 n! i" R3 \4 ?! n' K
let power 0
) P, M6 V) p5 @- Z- h/ [; v& a. hlet local 0$ d$ F* l* [) Z
while [k <[trade-record-one-len] of myself]
2 W9 v& q, K$ [( {( D" Y" G7 a[: u# s$ v* E+ p& U# n; L
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) / M) L+ O; ]- H9 i
set k (k + 1); E2 J& q% @$ z6 _3 M
]. v7 ?6 j* k/ c) S! M
set [local-reputation] of myself (local). r, K* G: Q8 v8 ^" M& N
end- ?: y" I) l3 _/ |
/ p9 C) H$ l" c
to update-neighbor-total
5 K+ N) Y7 C  o8 g- l/ _
- A( I$ \1 ]9 P2 ^3 I: K6 K1 q9 j0 O& Bif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 y/ ]9 T2 ^) [: u; O; e

9 d% k# G! c7 [) E# Y+ U# h* C$ d

- I. B5 [* x/ \+ B, A# w4 wend
5 R+ y7 c9 j+ D& e. z/ ]9 d) B$ ?& m$ M) J
to update-credibility-ijl
* \+ Y/ }$ [% {6 i$ `% b+ H" D5 m3 m; t
;;
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。. x$ a) r. h6 Q8 }8 y' u3 E
let l 0- [1 k9 L# s2 K
while[ l < people ]
  `$ v, N$ x9 h$ u* e( j;;
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2 G7 J- M) }& R, T
[6 I& _" M- S2 g/ j* I, z) W
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 M  J4 _) v/ \" }
if (trade-record-one-j-l-len > 3)
* J9 C# d0 F0 S$ ~2 k' C7 a[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; S1 C: M1 ]6 N* I+ ~2 E
let i 3
  ?) v1 \$ n9 o- p8 z- a. X& X8 olet sum-time 03 P9 D7 T8 Y& ^  q5 t3 _. V3 Q
while[i < trade-record-one-len]/ |- t1 z! A6 U* p; g
[
) N1 h8 F+ H: Iset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 O9 W- {, ]7 A- S! O  j; D
set i) U4 R# h; X7 e3 u7 J8 w6 _
( i + 1)
3 N7 C3 A# A' A8 d* g! `
]
; Q5 U0 v. ~  G2 O1 U( B; W4 Slet credibility-i-j-l 0! n1 N1 Q8 h. s1 Q4 S% c
;;i
评价(jjl的评价)
' M6 l* f# z' _! o( o$ @let j 3
( A: C5 Q1 D3 S6 ~: a# L% dlet k 4, T3 C+ n! i0 _# S
while[j < trade-record-one-len]( w; A( b$ m- d
[; s  N% \( A& ~( |
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
: w" L; z/ G$ p7 N9 ]8 Sset 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)
1 ~, c5 T) k% X+ jset j
# m: T  A) v9 m( A/ N/ [7 q( j + 1)
) B6 s, g3 ^0 [# x) t/ B) o
]' p* {7 ~- K( L& N' S, @
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 v5 z/ c( K! ]& B# e9 E

+ q7 T+ K. F% q' Q

9 `" Q# e2 C5 V9 zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ ^: b- T' f! j) ]% B; N
;;
及时更新il的评价质量的评价% O' d% s. ~( {' ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]& N+ \1 D: C. C; h, ~4 b: Z
set l (l + 1)' e% G; k) `% T0 T! A$ c
]: ?* S, x' D# v' K! `
end2 L3 H" v/ \) _

4 t$ U7 D$ f- Q" [; k+ Yto update-credibility-list# A! J: i) O; s9 j% X3 Q: y
let i 0( e! g6 c0 \$ V( u
while[i < people]
4 _  Z  Q  V  f8 t- |[
5 N% P5 M! a+ I9 l$ N" tlet j 0
" H) j' ~# \& p2 D+ ]7 ~6 w( Tlet note 0
& L+ K. v  V: w. m0 R3 r( Glet k 0
, i- f2 M; J! g+ g6 T3 V2 r;;
计作出过评价的邻居节点的数目
" j# f8 O$ V, h# A' t8 Jwhile[j < people]
/ `) {) ^( u8 Z- q1 n0 x[
: l9 C- P9 i# K6 W% k4 tif (item j( [credibility] of turtle (i + 1)) != -1)1 e$ e2 o* {+ s: c' c
;;
判断是否给本turtle的评价质量做出过评价的节点( n0 R$ Y5 _; `) L
[set note (note + item j ([credibility]of turtle (i + 1)))
# ~- ^8 d2 j; P, M0 y;;*(exp (-(people - 2)))/(people - 2))]
7 h* U4 |/ ^/ j7 Z9 E& }  c4 Q
set k (k + 1)$ g# ?- ^8 A; U9 q: Q  b( B' @
]* k+ @- V- l( j2 w9 _
set j (j + 1)
6 |7 C) }( ^* I# T/ W, h. U; N]
8 `7 v" R. {+ \9 yset note (note *(exp (- (1 / k)))/ k)
( z8 H& d0 e' P8 ~! P8 k" Xset credibility-list (replace-item i credibility-list note)* n# Z0 N6 q& u& e3 M% P
set i (i + 1)
, O7 y0 ]4 ~2 e: u# Q+ Y]
, M2 B$ V2 j; N5 c  x5 wend
5 |* v3 O$ i. D# p! p6 _. O. ~4 G9 @' C" I0 ]
to update-global-reputation-list
: ]/ p3 ^  e* w, J- s0 zlet j 0
4 R+ q3 J+ V0 |while[j < people]& n1 y, S+ k4 E
[
0 @0 [; j5 H5 P' |' ^" }let new 0$ j- L$ |4 s- \! I* u9 z
;;
暂存新的一个全局声誉
* p- s( F6 \1 F# y" f3 W! Y( Elet i 0) C" t6 L' x" j! p! K' e; T5 M
let sum-money 0
; e' X7 \& U' ulet credibility-money 0- F& W0 {7 Q2 A$ Q
while [i < people]' @3 v9 U& b7 K- B1 w* W
[) V4 c# W: u- w4 L6 U# k
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* m* K' J' {% B4 \% P7 Z$ N  ?8 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ j1 i8 v5 ]' K# ]' Cset i (i + 1). Q- Q3 Z5 C8 ]9 |/ o1 g  \
]
8 I3 s: [0 s: l# tlet k 0
4 r8 t  p7 B, `- ~9 f6 e- C. P+ mlet new1 0) o& Y) L2 q9 z0 v$ x2 a9 Z8 G  F
while [k < people]
1 ]) C: E' J0 i! z2 U[
! w0 {0 u. U# a$ y8 d9 H# J" Qset 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)# t* o* ?- _8 \1 U1 E7 l* z' m. F
set k (k + 1)
  G6 c  N/ a% H( P  J3 n' L]' q1 W/ O- y2 _, D* _- m1 |& x
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ I$ o  G: I( rset global-reputation-list (replace-item j global-reputation-list new)
' r. I4 L& w- q* O2 Mset j (j + 1)
  J' v0 W& A9 F' N8 c) q. b6 P6 C]
* O+ J( N- M& q- o# E0 pend
/ j7 _! w( i  f5 m: r1 J$ J' _3 Z9 z! U2 j5 d  k: c7 j

5 ~7 [, Q) f' r" A! r' ]5 ~9 b. h- G9 w. O1 X5 M
to get-color
; F0 h, L4 _1 R- s" j- s) ?6 X, o
! e, }2 h' B6 i9 @9 ]6 @# lset color blue

  i2 U0 ^; N5 K& q7 {, J4 X0 W. Eend3 @; M0 L# o/ s
! A. j+ q4 e" g; d0 F; q4 A
to poll-class
7 w" M( e; P3 ?3 Q; x' wend
; ~2 p7 q$ M) R& Q! t' H5 \. {2 ^& w" s
to setup-plot1
$ ]  X! B/ P7 W% \3 F% R. J! E% X+ N! t
set-current-plot "Trends-of-Local-reputation"

! g5 N. U: `8 U; V1 b3 b( t: P4 K( O; m3 E
set-plot-x-range 0 xmax
  x3 l$ X* |$ [4 k& ]' p& l0 Y4 J
* ^+ w, S8 x4 c/ N, x, }
set-plot-y-range 0.0 ymax

) y$ ^) _3 e0 [$ Z- t' c* ~end
0 T+ g7 [9 b9 g4 W1 V1 V8 q7 l" J, U, `3 o8 W0 ~% r1 \
to setup-plot2+ f. ^. M3 }6 Z! R% M3 V# `: a6 e
+ |8 g; r6 B9 y" l( }4 v# E* i* B" R* n
set-current-plot "Trends-of-global-reputation"
% D, W+ B0 k  }& D* l  |. y- D% i

9 F! D9 V7 c  }- ?set-plot-x-range 0 xmax
& `6 a& b" `% F0 j, e% R' @4 \

2 ], \5 r8 u, [" l) Z. a/ v( Nset-plot-y-range 0.0 ymax
( t$ K0 [2 {0 f3 _
end& F: z& P1 X8 s* @
" [* |7 q1 m0 O# _
to setup-plot3, x; G3 E2 A/ |, f

, z7 G# B# q& r& M3 V+ Iset-current-plot "Trends-of-credibility"
0 t% k0 T" G, B
( B- J% g# q# W/ `3 a3 t
set-plot-x-range 0 xmax
5 e3 v2 P9 P8 ?4 c) X9 f" _
& |8 ~. _, [7 N/ N2 }* D
set-plot-y-range 0.0 ymax

3 V+ ^+ z2 }( P5 j; O1 X% send+ g8 \+ q4 z6 {+ ?3 c

9 z7 w9 a( R% s! kto do-plots
1 G& r' z! E: k  Oset-current-plot "Trends-of-Local-reputation"
9 t! q9 r2 f) W- T8 t7 Lset-current-plot-pen "Honest service"
6 |; M& I: a0 m- xend/ M5 L8 m& ~% ^1 U

; u- ~+ ^) i6 x5 U6 X* 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.
4 t8 ^( F( u, ]; A8 A, U  H+ q
3 g5 C. H8 z1 Q, J2 L! p! U  g! l6 M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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