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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:
/ v8 W3 ~6 f8 _. mto do-business
8 D7 g5 N9 R) Y" i- j1 [' w# y/ G rt random 360
. M" e4 T! ]3 C5 {7 Z+ h2 K' } fd 1+ B% Q# l, T* j0 Y- T
ifelse(other turtles-here != nobody)[3 X) d7 b1 @( M$ ~
   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.
! r% }/ i; {+ o0 P" {   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- J9 S- a- f4 ?" J/ x- I) ^5 Z) ^8 M/ n   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 J: J0 T1 G: k' Z, e3 x, |
   set [trade-record-one-len] of self length [trade-record-one] of self
; H1 i+ C; Y$ f   set trade-record-current( list (timer) (random money-upper-limit))! v, N0 t* H2 r. l" t
% ]" L& c7 y) I! n
问题的提示如下:
; P; [! n8 i! {1 \- s  ?4 ^" s3 J) `
error while turtle 50 running OF in procedure DO-BUSINESS2 `, R, p. {' R4 f: @* h7 [) v  d$ E
  called by procedure GO8 _: x1 \3 i. ]; C. w
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  \2 Z. q9 \8 q$ l
(halted running of go). C3 b. [" C7 I7 o& p
( c3 P) K1 U% P7 b1 I8 M0 e7 @
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~~
7 M: y9 h9 T6 {+ h. G4 w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4 t9 Z- I2 {0 C! P& ?' {5 _
globals[+ p5 }6 q, V/ O- t2 {( e
xmax) u7 R8 [. r9 T  U7 p% H, }0 V; f
ymax5 N; T) n8 h9 v+ p
global-reputation-list* h  m1 Q: y0 }$ C. j6 C2 s

/ g( W9 d! }  J7 X& ?;;
每一个turtle的全局声誉都存在此LIST
4 r; e6 ]* w- t3 S' w( [* fcredibility-list$ e3 p0 C, l  i4 L& F! I- l% I
;;
每一个turtle的评价可信度
; Y3 e* m: E# y4 S8 b; whonest-service
3 f4 y  {' K2 Q2 P; y& W+ a% t8 ^unhonest-service
! _$ o3 I- a7 N$ f9 uoscillation
1 G7 L2 D& y0 H* V# m4 `rand-dynamic
0 H, ?+ y" F8 C1 S3 j8 E]
0 y6 B% h( X. h( a9 G4 y4 g: h/ `8 R* ?- S8 v. ^8 w
turtles-own[
  ~0 [# N* D7 i3 ktrade-record-all8 y- ^7 M, F3 e/ \' \" ~$ E; Q2 E
;;a list of lists,
trade-record-one组成( z( Q) }9 v( M: Q. m
trade-record-one
# `& [* H4 U$ n& S* `;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 M1 t: Y1 d5 D9 K4 k. R1 f: L
! D) ]" ?& }8 ?6 K. r;;[
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]], }7 M0 m2 R$ c
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]
( a- G2 o1 W6 l' i# n/ n4 xcredibility-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
/ G7 |- F; i& a9 Wneighbor-total
: g9 R) w6 ^+ L8 H;;
记录该turtle的邻居节点的数目5 G% E4 h3 [9 u8 k% b% K
trade-time. Y+ _& W( e9 Q3 i8 y- w2 ?9 K
;;
当前发生交易的turtle的交易时间
7 S+ ]+ {1 J" uappraise-give  Q3 A: v; d* y. N
;;
当前发生交易时给出的评价( O3 o- v3 h- x3 X5 X4 Q. z, d
appraise-receive
0 r+ y4 l! h3 v6 s" q  E;;
当前发生交易时收到的评价6 f  B: e% T0 \4 N& a; j
appraise-time
8 ~0 V# ]9 v3 T+ F- E;;
当前发生交易时的评价时间
8 r( R" S* R! T) Clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉8 ~5 t6 o. M" b9 G5 G
trade-times-total9 g- p. e/ @3 {+ f
;;
与当前turtle的交易总次数
/ M/ `) V! B2 Htrade-money-total
! n, Y/ _# H. u' I;;
与当前turtle的交易总金额
0 n4 x. H: v7 V2 T# e, b5 W  }local-reputation
$ q- u+ |; w# _global-reputation9 h# Z( \% T# p$ R) ^+ T3 l
credibility& _  p8 L3 H- l7 ^4 E
;;
评价可信度,每次交易后都需要更新9 s) a( g0 b3 |& x# m  F; g! z
credibility-all" _  O2 ?+ O. W7 I! L' [/ x
;;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
7 [, M2 J. X: i8 M( \' u! m, a- m: a, V7 u. 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' n  c6 V) [. e" W; V$ Y
credibility-one
7 M* G; N! L8 }- }5 B;;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
5 ^4 {1 ~2 A# b: ]$ Jglobal-proportion
  v) U) Z8 C. X$ jcustomer
$ C1 `1 d! b/ S; H, ~/ Kcustomer-no7 d  U; a3 h: C5 o# h/ J
trust-ok' w. S0 @. t9 v8 m
trade-record-one-len;;trade-record-one的长度
% a) m6 D' F7 J7 K0 J2 e]4 d& x' V7 @, d$ T, B: m2 r6 d8 ?/ E
/ q% r0 E! w- B; `5 _4 W
;;setup procedure
3 d! k, ?, |: j; w6 e5 [; v& h: X4 u  G3 g
to setup5 p2 V. T0 {4 h; d; [5 q

5 m4 [6 M4 b: A% w- }* [ca
8 c. `; ~  a; K- L( L
, M4 M& F6 L* Z9 Z$ B
initialize-settings
/ |3 `1 r: m9 U% ?0 ]7 X; I3 b
9 O2 y  u8 S& U1 y0 _- B
crt people [setup-turtles]
% K: M+ L) b# r9 n1 D
) v3 ?& A0 M# b, L
reset-timer

) g: H5 Y4 K3 n5 w: H3 v9 s) `$ g+ j% m
poll-class

0 l1 o1 }' r# z. v
. R$ d" I8 U8 [6 W$ v) L* k5 O9 gsetup-plots
5 }' O6 o8 H3 y3 Y5 p
* ^: G( f: r7 P8 ]% Y
do-plots

  l) L* t" ^1 n& H, n# Zend3 q/ h" i  m& ?0 [
3 J8 u/ p6 X+ M$ t3 U
to initialize-settings& S2 B% c" g! W  c, @( K2 {# L

0 J+ ^7 C$ C! S3 @) t8 aset global-reputation-list []

+ z# b# ~/ @( ~5 Q- R
& r8 s( C; }) R$ e( ?set credibility-list n-values people [0.5]

& d& ?$ z* Z6 X1 B9 W
4 t+ k# g. F9 s1 G/ q% _set honest-service 0
3 ~3 R1 A, G% j3 `+ l
1 V! R+ B6 u1 [+ y4 x, }
set unhonest-service 0
4 V. N$ v. @3 m

; h3 J/ w$ r3 S% P1 v' _( zset oscillation 0

4 V: n% }4 O7 {5 q5 O8 M0 @  m4 g6 Q5 D/ v* ~
set rand-dynamic 0

: y; ~3 m1 c, N" g% ~end
+ e. U' c0 z( @4 r& H) g
) j6 X6 L5 }  E; q' F, jto setup-turtles 7 t! q  R+ d& K& ]' I1 p- v  P1 |# l
set shape "person"
. D- o- O4 t4 ~0 V* ]( \- _setxy random-xcor random-ycor0 A, y9 z" ?0 X' ]# g# M
set trade-record-one []! G" r  n; l6 P

7 |+ Y7 K* w! f$ ~) m  G  U- G" B2 Iset trade-record-all n-values people [(list (? + 1) 0 0)] 4 R8 J9 {  r- p- L& p6 @, o
& i9 p. U2 t3 I7 g# ~* F! O
set trade-record-current []
8 N- W3 `7 Y# o* m- ]. K1 Uset credibility-receive []) N9 r: I  Z$ O1 B
set local-reputation 0.5
3 o; d/ x0 ~5 |% yset neighbor-total 0
! R" T7 K. A. V9 }! s, ~  sset trade-times-total 0
& ~% ]4 q1 b8 p2 O# ^0 Nset trade-money-total 0
2 S+ [/ Y+ b5 p" L; E4 _  Wset customer nobody0 ~6 w6 E- \. l
set credibility-all n-values people [creat-credibility]# H0 k0 X1 s5 `" Y- I, l$ O0 T9 a
set credibility n-values people [-1]
+ }! c8 }6 U8 m( r" c* F; `get-color4 |' O- k3 C, `$ l" c0 H

# t$ ?. X# C2 n( V/ mend. i/ |: J. l; h# x

# l5 K* }2 E( Q9 o- D: J, Mto-report creat-credibility4 Z. Y* l* [! Q: [# W4 T. O) |
report n-values people [0.5]
; E& w- ?' c- ~1 h' s* u7 l$ Xend7 C! D0 j, n$ [- A. i- B/ {

4 K# a! g( r2 {3 L5 Lto setup-plots
* D3 l/ Q# v/ J- x
4 D2 k3 K$ C+ j8 C* Jset xmax 30
+ K0 _8 e: V' x  c* V9 W+ |5 X, d, J
" [; _0 P" f1 o
set ymax 1.0

' b# \  i: D* U$ l+ ^; B/ L! v% \2 g, |2 S' Z- J3 r5 @; Q3 T: L% d9 C
clear-all-plots

& T3 V# f. y0 i6 W
" @3 C* O5 N* W- ^4 j. [setup-plot1
% U% y) \$ V' ^" |) {% j  @+ F
" A( O  B# L" e5 \# b4 G& C$ V/ o
setup-plot2
# D; o" y1 f+ n0 [
! h4 y' s+ ^! g+ I- e
setup-plot3
) B3 {- q6 P; w# w
end
, X) n( D4 T; D" L: \% o2 h
, a$ X7 _% \+ h/ d6 ], [;;run time procedures) `! z7 z4 `4 g$ L6 B- G. l
0 B& G: f* q+ T7 y
to go# j) h+ y- f$ v$ x3 v, h1 o2 D3 j
4 {" x% Q( o. I  _1 C
ask turtles [do-business]
- C0 N* P2 }& n' x& |" ^2 D
end+ o3 E/ B( C2 F1 Q' R( s  _
) d6 ]5 m7 v& n  H' X- c
to do-business
" Q+ M9 R$ F5 @8 y1 t

2 V5 D/ ^! I( e  P9 w  ^' D; q  F) C- ?* L
rt random 360

$ r0 `/ L  J0 T* Z, P" A" `) Z
5 B1 ^6 q4 p* f( \, Q, rfd 1
& d, {; [* Q9 T' ?
$ b: ?  w& C, i2 g' W: D$ X
ifelse(other turtles-here != nobody)[

4 k2 _- Z) T$ W7 \5 ^
4 x% n% h9 N5 q& gset customer one-of other turtles-here
# A" _& j( [0 r$ p, `+ C
2 J1 |( ^" B6 V- f
;; set [customer] of customer myself

) e* G; `9 N% f: s0 p0 M1 X* t0 l
set [trade-record-one] of self item (([who] of customer) - 1)
2 M# q4 Q: `- m8 Q" ^5 @$ d[trade-record-all]of self$ {. x" ?' g  a# t0 m2 P7 H; Q  P/ _, F
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

; F* b: Q/ ?) Y# t) D6 Z; S/ y: W
' P3 W, l. r3 [$ Eset [trade-record-one] of customer item (([who] of self) - 1)
0 g4 N# }, i4 O[trade-record-all]of customer

( a+ P. I4 E9 r6 I& b) a6 O! v# C! a) O
set [trade-record-one-len] of self length [trade-record-one] of self
  F" e5 M4 G3 O- G

" l, I8 r1 r8 x9 bset trade-record-current( list (timer) (random money-upper-limit))
8 l" ]3 k, y3 K$ i  ~3 u9 ?# x
  t* T: R; L' N
ask self [do-trust]
: m0 T1 {; t& f- P6 H+ k2 T5 {;;
先求ij的信任度$ p3 u! W/ h8 K( u3 ~

% o) j- [% r* d) g( {if ([trust-ok] of self), F7 ^; D- F- d" h4 ]  ^8 z6 l* R
;;
根据ij的信任度来决定是否与j进行交易[$ }& L( Z6 r: ~/ z/ Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 N3 _' t" k: F/ r: ~% p7 S; ~0 D. p2 n7 U. z3 D
[

" L) N( Y1 p  ^3 N: a& U3 @0 k) m4 I$ L! W; |
do-trade
& B; s, k% T5 X7 y6 f
. `1 H# `8 U3 {  f  \" E
update-credibility-ijl

7 R" v4 i1 Y/ ^, p& F& h7 L/ q! \# ^
update-credibility-list
% Y; c4 l* E8 [. @

: K& O; t- a7 |; y0 f
7 O+ [/ U9 ]" K! zupdate-global-reputation-list

9 O* ]2 a9 ~! t2 B8 b2 M. ~  S4 E  q9 p) M
poll-class
$ c' j% K7 C1 D" f

" i! d$ i) H6 l% T/ Kget-color

  Y, B! b5 F9 Q" s
& r1 v" V1 i  t, J1 r5 o+ k/ p0 @]]; ~* D; W0 |) H: h$ Y

' k  I3 j, c* Q9 B+ |;;
如果所得的信任度满足条件,则进行交易
- S9 X, X" F8 o; V0 q4 r& W& k( Q5 s9 C8 j$ l7 o: [7 Z8 @
[

+ y2 g7 T( X( q1 z7 y
1 j( Y+ s, o# d  A: Z- Z5 L, |rt random 360
4 Q! f) ^4 B/ ^* M- B! R' G
) @6 u8 `" C4 D
fd 1

+ G* }. G' ^# U3 I6 t% B- K* |
- R4 P  T0 ?" t0 P3 |) n]
6 s: G, o( I  B/ J/ u
( }$ ]) A6 q! T% _' a; X& i+ v/ H
end

# J4 U5 w* _+ b8 t" v% \& `+ F' T6 s) h. |& r) E0 Y$ @# {1 Q
to do-trust / f+ y* g  N  X
set trust-ok False
1 D  `& ^: ^6 j- ~+ ]  L+ b; R/ f2 J5 M0 ]$ T  h* z: V% f" c; L  J
3 C% Z, R4 d2 V( v9 C
let max-trade-times 01 u7 Y/ {5 V  t2 W& c' b0 A0 o) S" W6 D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]3 s: j  ~( D+ X' u8 o
let max-trade-money 04 ^7 e' Z' h: R; O0 l! s! @! ^" u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 }6 V5 r7 M' x7 F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' d7 x6 G% R1 s
% m& {8 S% _9 R: ~/ u7 G- d( @
6 g. h7 C+ d4 `8 R
get-global-proportion. m8 K2 p8 s5 M  E, o, f
let trust-value
' y6 L- P/ c" z+ X1 G+ Z, N. Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: b+ ?* c6 d& e% l  s% s
if(trust-value > trade-trust-value)
% ~& x9 u3 |2 _. K3 r[set trust-ok true]- a2 U& t9 Z7 ~! E
end
  n, x; U  X8 B' _4 |" D4 z/ u' `) w, {( ?  d- \
to get-global-proportion
- t  Z0 H2 t0 N: d# e- `ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- l; V0 ]1 G5 S- Q& D6 ][set global-proportion 0]
1 j4 Q8 @9 h, W6 }3 J( B! b[let i 0
& K8 y7 v% X. H$ Vlet sum-money 05 V/ y- ~, X8 p
while[ i < people]* h6 b/ d3 y/ B; F( W( Q
[8 K' T% t1 R. A0 v9 Z# ]9 `
if( length (item i8 E3 [  K& y- W0 \) i+ q
[trade-record-all] of customer) > 3 )

+ d" n1 b: j2 W0 ~( X- l7 a5 J' a[6 I4 {$ @' L% e& N6 a
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: [1 ]! q: T; m, s1 N0 K]
+ [% n1 P: T3 F8 G]# C. r0 A2 N: e0 |) s1 N
let j 0! @8 }2 w$ T! P2 F$ _( h7 S% i
let note 0
. _6 b6 n) ?# A% I8 }- s3 ewhile[ j < people]$ K! n) C8 c3 n
[
; b' h8 {4 v: oif( length (item i
1 L! |" C9 v, c[trade-record-all] of customer) > 3 )

! d, l5 \) ^$ r2 E$ T* I/ l: }6 K[: M4 q: k; B% ~& a
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)7 M* G" d$ M+ p1 q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 j4 L) E! S. X& Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& c& F7 M  n3 {7 i1 A  Z) U]
; o2 h% z+ c- U" {; y]
' W2 ^$ w: d- @: Q; T4 z/ Qset global-proportion note3 n4 w. m0 Z' K6 |8 c! u% i" p
]
. A4 b( N: s# f2 Yend
- x3 A5 j. p; s) @& r
& ?2 x; @# }# R0 {8 @to do-trade
) Z+ e& w5 Y7 f0 d' W;;
这个过程实际上是给双方作出评价的过程* T0 Z4 j6 U+ V: p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价, i1 T% D1 X' k) q, j$ \( \" N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* e: ?- B6 _4 l. ^set trade-record-current lput(timer) trade-record-current
5 H2 l3 b9 o* H/ H;;
评价时间; N4 Z2 o$ f8 [$ D, {1 _
ask myself [; B( [; U; j7 ?4 C
update-local-reputation
. J; L, A# w' U5 D2 R6 Lset trade-record-current lput([local-reputation] of myself) trade-record-current# c# u- M% z3 S# x
]
9 g3 m$ v& L+ d0 g- j, Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 D7 [; ?- n+ x$ Y$ {
;;
将此次交易的记录加入到trade-record-one5 g2 |, n6 B# G: f' l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)5 H% E/ h. s+ \7 ~* W; P# v) e
let note (item 2 trade-record-current )6 K  I' T8 Z* [
set trade-record-current
. n0 V3 n, k" Z(replace-item 2 trade-record-current (item 3 trade-record-current))

1 {2 f, B0 o( ~5 a7 t- k8 n9 B' bset trade-record-current
( c5 ]! A3 ~' v" ~( N+ Y(replace-item 3 trade-record-current note)( }( p3 k/ u, s5 [9 a; ~
) i* g( n2 D: ?- d
8 ^' C+ u2 N$ W+ Q( c
ask customer [  E; p& K& a" X+ V& T. H5 j
update-local-reputation
' B: T2 e% c: v" Z3 ]# bset trade-record-current
% [/ `: d# W7 q3 Q: [  J1 l(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; X% i! h4 {3 d% u+ Q1 y]
$ f( v5 Q( r* y' h
# h, c2 `& G' |3 k
* t5 S/ @9 a( G. W& p
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
# m3 O2 I  E6 \

) L; s2 g5 ], m& X( W) gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& f, w! r& x& N4 @;;
将此次交易的记录加入到customertrade-record-all
: G1 r) L2 o+ }, R4 Y' |end
2 C! B0 t- o6 P% q" ?* M8 `" O: j5 z- `# J/ ~
to update-local-reputation
, i5 a% b5 g  \. ~) o" Z# Iset [trade-record-one-len] of myself length [trade-record-one] of myself
8 [! Z9 Z* j/ k+ C0 [* H+ y! I" L2 n* w* [1 B
0 l: d! g- M2 r% k. e) M9 X
;;if [trade-record-one-len] of myself > 3

' v+ m  g6 [, l" W: Gupdate-neighbor-total
1 w, F# d+ U% _3 K* M' b) Q' c;;
更新邻居节点的数目,在此进行1 p3 k' E+ C9 x' l
let i 3  c6 N% M6 |, S* y) e0 S1 Z0 r
let sum-time 0# @6 F0 u" `7 o( `9 l
while[i < [trade-record-one-len] of myself]; i4 _: R% R, Z! v" @+ `
[( I) W0 O5 y& b& s: @
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* x. R+ ~1 ?1 Z+ m4 _" G
set i
. Q5 P0 v4 j! d; v1 K( i + 1)

1 C. Z0 b6 Q. H: l* T* i]
) d; q% a9 ^. Y/ Flet j 3
9 {4 X& ~+ ^4 j$ vlet sum-money 0
7 @7 g9 j/ R' H) v4 Qwhile[j < [trade-record-one-len] of myself]( Q+ @( P. f* v) n4 x' S5 }8 ?
[2 b0 u2 U6 A- z0 I' L, `
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)
% h: D% K7 ]$ ~3 K4 x4 Pset j& k; T' F, O1 _% k$ _: D" A
( j + 1)

; ?- {0 ]4 ?: A1 _% ^. P1 i3 k]
' h9 K: i, ?9 U9 w0 Ylet k 3
. [5 q9 y* U* Z* z! [  j/ K- j( mlet power 05 v: H9 T. @$ X, Q
let local 0
, |7 ?) y. M% i, }1 K4 Zwhile [k <[trade-record-one-len] of myself]( O0 Q, y1 ]/ o, `/ f
[! z8 t/ T9 N4 @0 l' d
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) , U4 O6 Q* r: o  |% U3 e9 g* I
set k (k + 1)
  W1 i3 k3 Y& }+ V8 p2 |# |]
& j, T2 I, v' c" ?7 |4 K0 p& dset [local-reputation] of myself (local)& C0 U+ Z9 O! f9 A
end
5 ?( N" y& t$ r! K
  m8 W2 |  z. pto update-neighbor-total
' d3 R2 p  n" d& E2 G. {" s3 B2 x
  B5 I  i3 k% ?if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) G+ n  Z" d6 p0 h
/ \& g% B% x4 h
0 ^: ]2 P  F4 F. C
end, z+ C; @9 L$ R8 q$ Q, x% Q
, }% R/ `! b  e7 q4 ]
to update-credibility-ijl
/ m- x) W6 E& L" s7 d$ ~
' m8 A8 p7 K* Q$ L$ s/ F" k" \9 I;;
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。, n1 C- c% p) p, v
let l 0( o# L! H3 `6 X# P) r; G- K
while[ l < people ]- O0 @& ^9 Z. V5 i% h! w! ^
;;
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& F+ `) |1 \8 T: l% X* J
[
* E# x- A+ M; {$ Y% ^, w$ D. P) dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
0 X+ [2 F+ X7 a/ u% pif (trade-record-one-j-l-len > 3)7 b$ `! z8 S. i0 y# x. l6 y0 |
[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& @# ?. B5 S. Z6 z0 C
let i 3
0 ]- {8 @9 ?' z8 b9 q; rlet sum-time 0
5 K. f" W5 ], f6 y- |% g, J+ pwhile[i < trade-record-one-len]
2 P# s4 f" i! I0 d[
& N$ i( Z/ q/ q5 B+ Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 L' M7 _% h4 \& d. P) Z* m" \
set i
+ ~% r4 y" }: k! {% i4 u( l; T6 A' j( i + 1)
+ ]$ O2 [* p2 E: @
]
1 z" P, ~4 V: y& Q' Clet credibility-i-j-l 0
, p) ~7 i! Z$ g: T, Q;;i
评价(jjl的评价)
  ~  n# I( B6 @0 }- y8 r6 Alet j 3& {9 A& \, }7 U- ?  i% U5 J1 _" t
let k 4
+ ^8 x) c3 s# F7 Y4 V' bwhile[j < trade-record-one-len]) z+ _+ h3 O# A- f( ?
[: I7 y7 Y( o% C& m; z5 R, n
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
3 K2 K. S" e2 M5 h" z! ]7 h% ]+ E& `set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
4 o7 S3 s  T% X- [set j
8 n) O3 Z& T  v6 E* J( j + 1)
, l) ?, L$ l9 ?6 O$ @& Q
]
$ O' n- v, F: a& r6 S$ Tset [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 ))
* y; V% O4 M1 m, n+ _' r9 S7 i8 e# T3 D

* D& I1 |3 i  f4 D- e0 ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ f3 R6 c: a5 `0 w0 L5 B  R) ^" k+ ]
;;
及时更新il的评价质量的评价
3 l7 u: j5 y/ u% U7 [0 eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" l. ?$ _* B, g2 f% k  G, H; K0 m
set l (l + 1)
* }  e3 J2 d3 H$ j* O]
& E! M. D  [$ o; Yend" \2 o& C0 Z' ^( u
  R" _/ j6 E( Q
to update-credibility-list
' }7 r7 w/ n: d5 dlet i 0
! q, o- O& U" P7 hwhile[i < people]  a+ q# a, A9 J% @/ H  \) F: n$ _
[( Q5 }3 U. l0 y/ D$ j' Z; A
let j 0; o: q2 a( A5 }0 ?/ ?+ F
let note 0' D3 H1 u# q. P, D! i
let k 0' ]( ]5 A  v! p; C! n5 Y+ s, ^
;;
计作出过评价的邻居节点的数目
4 h: _  \0 `, Twhile[j < people]2 d& ]6 A2 i  Q8 k+ g/ }
[
3 K0 |" C8 `' c5 jif (item j( [credibility] of turtle (i + 1)) != -1)
% J; |6 f- q2 u- h1 _! Y! L;;
判断是否给本turtle的评价质量做出过评价的节点1 Y% n( z" V% _' `6 k! X6 u0 |5 d
[set note (note + item j ([credibility]of turtle (i + 1)))
3 f2 e' l( j+ f3 E1 \: q3 M;;*(exp (-(people - 2)))/(people - 2))]

' A1 f8 T3 x, U, O6 wset k (k + 1)( Q$ _; c$ h9 e# D0 Z
]
2 ~0 H1 G: }( |2 J& Wset j (j + 1)0 m5 z5 O* _8 \- |
]
0 c3 X4 l7 _9 rset note (note *(exp (- (1 / k)))/ k)
7 [* F' E. V7 r8 wset credibility-list (replace-item i credibility-list note)
+ |) G$ u$ j/ ^) }0 A' M, v4 aset i (i + 1)1 X- m" h: Z4 {6 ^  Q5 s
]4 Y; i* i6 S, @
end7 c1 }+ L8 ]9 v
* T1 ^5 U; g3 r- s
to update-global-reputation-list$ g# J& k" q- p( h2 A7 ?# \( G
let j 0
: c" ]: I: O% s& kwhile[j < people]/ q( Y5 E. G5 N+ o  R7 V
[
% U2 `- Z  S4 r8 Elet new 0  z* c2 |% h. V
;;
暂存新的一个全局声誉6 U: b7 S! Y: `8 }2 `
let i 0
# H& \* B" m3 ?+ j; mlet sum-money 0
. U" U( S2 B, M9 y7 a6 j, Glet credibility-money 0
* O! H- Y. ^8 @while [i < people]
7 Q! u* w8 j0 g! t[! b# g# O6 ~9 p, Y
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" K) i7 ], y9 [3 Z
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, g4 J  m- b  N+ uset i (i + 1)6 _* }; T) X# ]. p/ q
]1 u9 u8 @: B. E
let k 0; C! M8 }, [# {0 ]+ s; u: w% t
let new1 0% ?- K+ ^9 H$ D' m9 y% |
while [k < people], u3 G8 U/ e1 m. s  w. B( h
[) T2 F, o. S- W4 v
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)
1 w8 Z! x; N$ Z; S" _set k (k + 1)
: U$ |3 w! D$ m8 t9 q3 t]
' i" R7 }5 o7 G" ~2 }$ c) Y5 ^1 ^set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( O0 Z$ V' I' gset global-reputation-list (replace-item j global-reputation-list new)( {7 Q$ K2 E/ A# {, F8 t+ z. E
set j (j + 1)
* k' q, N( S+ P. T6 z4 N5 Q; Z3 S]% _3 \/ \' R& Q/ b# d/ _7 |
end4 k% ^/ m9 m; w# }
6 {1 A# q- e# `

9 X$ }, _. ^% q- ~9 `9 c3 S7 E4 j  {7 K0 `  c3 _! [% \
to get-color
, y) E" h/ C- S% h" q. N& w9 i/ O
% ?. f& b# _* Wset color blue
, E+ U0 t, W& B& ]
end
9 o4 a1 D* d' C! j* y6 S  D$ M+ Q8 b0 b5 }
to poll-class
% y. C/ J8 \( X* ^0 B  Q2 Kend+ p1 `/ [0 s% e8 T. T
0 ]$ T7 z# F. N3 t' d, F
to setup-plot1
3 O, ]/ [2 N$ f0 ~* T; x& j' Y: z& Q8 p+ ]* A/ v
set-current-plot "Trends-of-Local-reputation"
0 |% p+ t4 r  m/ f7 f7 F8 @3 F; V

  l) }3 P. d: k" mset-plot-x-range 0 xmax
. x1 e3 m& x, T% W

" D( `, P1 _  Y: _. @- }5 nset-plot-y-range 0.0 ymax

5 o& b1 q. n4 s$ Cend
! v2 P3 w$ e& e% K# q! N
0 Z1 z  Q- j' H. c- u2 {( Ito setup-plot2+ C- i8 P4 G/ N3 c9 o! J

5 n$ I2 P/ \  k! W7 ?set-current-plot "Trends-of-global-reputation"
. d* G3 H! _" V5 u0 \0 u; R

, i% S- A4 O+ M$ _5 e' Nset-plot-x-range 0 xmax

/ e% B% Y2 o# p# y5 F# C7 j' z3 t
set-plot-y-range 0.0 ymax
- `) H* u7 b$ \$ y& v0 Y
end
5 H/ V9 b7 g" i! |0 f2 @3 y' N1 k" I3 s/ i0 y6 m& s0 }
to setup-plot35 l$ Z/ f) x: l( a7 L. `2 S
) X# h$ |" M8 B8 J+ L
set-current-plot "Trends-of-credibility"

2 a2 R8 T) `2 P4 g/ H$ o# ^# y/ _) m
  J2 C9 N% m6 h9 p: j" I: Y$ Kset-plot-x-range 0 xmax
1 Q; C! X# B5 X- K  E' e7 q
# w( u2 b0 M4 E9 C
set-plot-y-range 0.0 ymax

6 W: W1 J0 K4 C" _end8 h( {& s* r6 ^4 j4 M/ [# O$ s

0 s/ Y' a' M' D7 L4 a5 C* u( g8 L! wto do-plots; }3 ^3 d8 L# g( a$ z) L& d& q
set-current-plot "Trends-of-Local-reputation"- L- I) c, |* K6 ~5 Y/ Q- Y
set-current-plot-pen "Honest service", S, _, @# L& g. O  l. {  L
end
$ p! R+ K4 A9 ]/ F* z% [1 K. V3 X( A6 ^5 j
[ 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.
* ?& x# D: y  [/ i9 I! B$ Z( A
) C1 }/ m# f4 r+ w2 a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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