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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:
2 h& `( H4 {& C. Z( o, Q( kto do-business & ]7 V7 X# A2 j6 u6 |! ]
rt random 360& X. \3 }; `% D; U
fd 1
0 K- l8 v: R: U9 ~, }3 E) l- C. [ ifelse(other turtles-here != nobody)[4 J5 ?- C# ]# r( Y' x
   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.
1 ?, Z1 r7 d2 S! [" q$ a+ v, \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 U& w" M% e4 q# i: p! _
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" U3 i2 X3 m" R* w: s
   set [trade-record-one-len] of self length [trade-record-one] of self
8 ~$ ]9 Z0 U" [   set trade-record-current( list (timer) (random money-upper-limit))' o+ y# ]9 q! b0 o: j$ i
; d7 Z% q/ V: d
问题的提示如下:
( R3 c) M! Y+ w% ~, o- {. ~4 ?  `+ D* u2 [8 `8 P
error while turtle 50 running OF in procedure DO-BUSINESS
0 _. W" N5 L& }. e9 O  called by procedure GO
( P: J% r7 w3 ]: c/ I) Q" I0 W/ JOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 ]' f- c; w/ v" x
(halted running of go)
* b1 v* N) _/ |" {" o- Q7 l! u+ |+ r# d3 f8 `6 ]5 s
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' [( M" g) I$ O: u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! _0 B. r& ]9 S. C0 Z
globals[9 _8 x$ r6 t( T" O
xmax' ], d6 C/ a! U8 ?" o7 A
ymax6 C' @$ f5 p& [4 v
global-reputation-list
4 m$ _8 z- A  I3 Q8 n- J
0 R8 G$ i6 Q* A) n;;
每一个turtle的全局声誉都存在此LIST
) |7 n4 Z8 K( |7 r: Z+ Tcredibility-list/ O3 G6 U- k8 H% l
;;
每一个turtle的评价可信度; L- j$ ^. a2 M: t& j2 R
honest-service; u8 q. d: m' Y2 p  w2 |3 g5 _! m
unhonest-service! @' b# ~0 T; y/ w( |
oscillation
+ H% c. i4 z# i. `rand-dynamic
. v$ l$ {# v4 l]5 H# `4 {4 u4 v2 e* z- }0 w1 f

2 _. J6 ^- ]' E( {$ r. iturtles-own[3 u, o0 c( j9 @; b! V4 ^
trade-record-all
! Q+ V1 p( K) q; n6 r2 }( X;;a list of lists,
trade-record-one组成
! e( S8 H' z2 }' c0 J! \( ztrade-record-one1 j1 i  |2 ~5 d- o0 y" e
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
8 X! D4 m1 N7 X3 p7 \8 ^% Z
0 d- P3 E- Z% b: A6 f;;[
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]]& C- n" Q$ q9 h8 l+ {# ^
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]
3 J$ M- G6 O8 h9 j7 gcredibility-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" ?( P4 D6 n- Z) n. T$ T! S
neighbor-total% m1 |$ h2 {) G7 \& [6 u
;;
记录该turtle的邻居节点的数目
' \3 H2 H! }2 Wtrade-time) j) W3 W1 w3 X7 E( v
;;
当前发生交易的turtle的交易时间
7 l2 [. _2 N2 I: ?! H* ?appraise-give! C* Z: e8 B! }9 j: D8 x  j& L
;;
当前发生交易时给出的评价
5 a0 |0 r1 B  ^" \: K- I% Q2 Aappraise-receive
0 X; O9 L$ ^1 M9 {7 R8 F) l0 A;;
当前发生交易时收到的评价
$ E) l2 d+ l' g$ H5 \( A8 j: mappraise-time
2 \9 u: Y# c4 x- E- K$ j;;
当前发生交易时的评价时间
5 H9 K: e, |8 n8 clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" `5 w# m) m  n0 |4 p2 j8 n2 ttrade-times-total
8 a' N& S1 ~; \;;
与当前turtle的交易总次数  }$ D5 [0 V  M
trade-money-total1 L1 z- h0 O) E' l0 b5 p
;;
与当前turtle的交易总金额) E6 H/ A5 i1 E; g: b
local-reputation- v: I; Z& u- g
global-reputation/ M- Y7 E: V0 k& h# s# F
credibility; F4 n; I6 U5 J, C  U8 n% L
;;
评价可信度,每次交易后都需要更新  c9 E! B+ N$ ^. X+ j" V
credibility-all
/ X, c& H# E" l1 `;;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4 a! y9 A+ ?; X8 X. r  W

; o, m0 W5 A( r6 F;;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
1 r1 }& U* M2 Y* \credibility-one
' c; C- \3 E) q" p;;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  P: v+ Q: H  S
global-proportion8 Z5 y* Z0 _% g
customer- N9 b" `" b; g; o4 t8 u' s
customer-no
+ n) e2 C% L- x/ @0 O! T  o% c7 p: ?trust-ok& m5 V1 X' Q, @& j7 n  G$ Z9 w
trade-record-one-len;;trade-record-one的长度$ j0 D. s3 ^5 ^0 N" M, C
]
  k- M( r( k% }( h/ l! c, q2 O, B  D4 z1 N6 ]7 Q/ t
;;setup procedure% X* U3 q0 W; n2 D& y% ^
, |/ H4 v  W8 G$ h2 Q
to setup
" l* s2 g$ F7 R% |/ }
/ o- C+ Y! R. mca
4 {. X) P" ~1 y2 E- |
% I% c; w% g& ?& [) o0 F
initialize-settings

. p5 C6 p" N1 q) n' O- _2 ~* B- z4 C3 Z; G
crt people [setup-turtles]
6 e1 c# m+ ]- F  v, W

0 o; M6 }* K- C7 E2 i! F9 d3 _reset-timer
+ @% _( U9 _, F# w
1 g: e. [6 \" u  p& H  h4 r/ C; B
poll-class

9 @/ ?- W2 ]! g  K
, b, p# d5 j8 d+ F" rsetup-plots

4 ?. X" A/ M! a+ G, q! I1 |9 K/ h* {2 W5 e
do-plots
2 t8 z1 J; g* U
end
. W2 L6 j" _7 M5 X' k
! ^3 ?8 P/ I! ~; k, Xto initialize-settings7 z. H) F5 Q7 g: i

$ r+ x  D8 N0 R" Y! b. Rset global-reputation-list []

( {/ \+ o+ i; U# P  q( |1 V
2 i$ K5 \8 Z) a2 A0 B, cset credibility-list n-values people [0.5]
  G1 b2 x' |8 ^: A7 L5 n( v9 D, S- n1 d

% i; ]8 t1 K  @/ Y# r+ u" \set honest-service 0
+ [* j% Y' A. {+ k* {8 G, e0 M/ `
" \8 n  l3 P# x
set unhonest-service 0

: B$ s% ]2 O2 x0 m% I; I2 ^) E3 e. R& y( M1 r) C$ [0 m5 b/ I
set oscillation 0

2 D/ L; S; m) V# M3 p' {
7 Q! z& F( h' ~  J$ c: fset rand-dynamic 0
, y: b! x9 p: f! s) A
end, s* u7 w  E" @

2 A5 V: w& ]0 W& z# d! eto setup-turtles
: {2 K2 B$ f! Q8 Sset shape "person"6 J! U9 J# D$ W$ b. Q
setxy random-xcor random-ycor. @6 t4 k. M  a% ^
set trade-record-one []/ H$ ]  P  t- O# Q0 H9 I

. ?& `, F( ~) w+ H/ X2 c/ `: Bset trade-record-all n-values people [(list (? + 1) 0 0)]
9 q; [, \- a6 s% v
% z9 z- ^' E1 [
set trade-record-current []
( M1 z9 r) b) W: v; \, U0 x6 K3 V: Jset credibility-receive []
! m& s' y, b5 q7 v% W0 n* j' Q) kset local-reputation 0.5" r  I( P' ^. E
set neighbor-total 06 f5 M% G9 j2 G( |/ J9 }
set trade-times-total 0
' v1 e& m1 m* v7 m1 d1 G9 {set trade-money-total 02 n1 E8 F$ W. |  Z) o
set customer nobody
0 z, O4 {4 ]$ Bset credibility-all n-values people [creat-credibility]9 U, K$ m, Y# x" m, L# C# T
set credibility n-values people [-1]; @7 b" O6 ~! k+ x9 u5 N
get-color. G9 [- i8 p+ X: c7 J& l
! a( M  K( y  l3 A. M  J
end
' O, o  r5 y* F' r) ?3 U4 z  k( j6 ]! Y" ^7 L
to-report creat-credibility. p( v3 N# r3 U7 E6 o5 u
report n-values people [0.5]
$ l5 y: ^. A- i5 X- M' y2 Wend
- b2 l8 Q) e, Z% A/ V1 K1 ^
! t" Y# S5 l5 q- n; \+ oto setup-plots
! l9 g: j* f9 k. b4 F: Q# E' C$ P: W  \$ x& W3 E
set xmax 30

% y7 P! u! i) K) M
, T5 g+ P& X( e3 iset ymax 1.0

2 P' {) t% L- p; E  c+ b
) [- C# C$ u* ]clear-all-plots

9 q: ~, w+ \  V" @* l! I/ F$ n" `! c' [* n
setup-plot1
5 i# w* Y  w& x) ~. _3 ?

! a6 w' S9 P: rsetup-plot2

- Y8 [% l; h( Q  q( x, B# \
. ~9 j, j8 y. G5 A1 isetup-plot3

* _( k" ~$ G( ?5 c+ [end' K) B. X  X- q

1 Z; e. w  R, Z  h! h  ]& g* U;;run time procedures7 f5 l- c$ y, P0 u
5 K1 p8 E+ i4 X
to go7 e6 \6 ]8 `1 H; s  B* c! I2 f, t; B" y

/ i6 O3 U8 a. j) Iask turtles [do-business]
+ _& D1 h; R/ G& {' {& A
end# `, f5 K; s$ I9 h$ Q

; ^5 V1 S5 A6 b$ Mto do-business
* M4 f' a/ ?0 E1 N9 b5 Y: I5 }- h

4 y+ P& P+ L  \9 `/ L, `0 {
, e( w& T- ^0 Krt random 360
- F4 D( x* J8 ]* @+ j9 w
  o6 ^9 {; g) \
fd 1

  O( e& B9 n' F% R* H# f: ~8 \
ifelse(other turtles-here != nobody)[

/ y1 g# g; K& a% {" d9 s! n: d% g- Q/ K
set customer one-of other turtles-here

2 u4 {% Y; h1 Q8 ]. R; P$ |/ S. n3 C
1 m3 f3 L, u9 a3 y;; set [customer] of customer myself
( R  }3 C) Y, v7 ]2 l( F& Z# r" e
" C" [3 M, Q$ z& T" u( x
set [trade-record-one] of self item (([who] of customer) - 1)
, A% t& \/ M4 n: A6 m  l$ O[trade-record-all]of self2 z0 A4 ]. S3 Y7 j( L) [2 B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 U! f# B/ z9 O  H$ J0 J
+ j8 f, S0 ^# g1 D# W& m4 Q
set [trade-record-one] of customer item (([who] of self) - 1)
$ |4 R% |+ ^8 K[trade-record-all]of customer
! _: C. K, b9 t
6 L* o6 V6 X" ^. N8 A. u
set [trade-record-one-len] of self length [trade-record-one] of self
% s. I! Y" x  T4 k' _- Q  t3 J* F' f
8 a- Y8 R5 |4 L, z5 m6 p$ u
set trade-record-current( list (timer) (random money-upper-limit))

5 X7 n" f0 L) ]: X/ |
8 y9 Y% V2 x9 X, Y3 b0 o! B% X7 Vask self [do-trust]
/ M9 ]% I" y4 k;;
先求ij的信任度
  _; @" _/ a7 I+ L' v, a" Y) c4 s( g/ M7 z/ C; x) C9 W! Y
if ([trust-ok] of self)
( [" n. h0 l8 }$ x5 ~% J' L4 i$ ?( N;;
根据ij的信任度来决定是否与j进行交易[. X& ]" v9 u9 _: K+ Z6 e& q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ \+ Z- L8 c& @  R- Y  w9 j
% ^3 R) c& }7 c8 ^. ~2 ~1 w
[

  l' p0 M- X2 [$ r  m. S! s+ ?/ d( F! a/ ~4 ~; E' _
do-trade
6 L/ l! C! k. n1 Y

0 M! j8 S% R7 L1 Bupdate-credibility-ijl
7 i& j0 f5 M) J) d1 @  M
: g7 Y) F1 M8 G- B0 {
update-credibility-list
' V4 T$ q2 z8 D# P, e& r
2 O: S; {' n* `0 _' O
) U7 b6 I; f  j' z/ E* N
update-global-reputation-list
1 @2 O5 }' J% S% }* F

- q0 f+ D2 T  Spoll-class

6 Q2 w/ ^# J; f5 i% N; N/ ]* @5 x& X  _+ E
get-color
$ k+ g. X5 U- ^5 g+ n4 z' Y

8 k" K* b, ^" t* {# Z$ P' H! b6 o/ v]]  l5 t9 U2 f: f$ W$ P8 @, t
4 p) A/ A+ o% J9 L  D
;;
如果所得的信任度满足条件,则进行交易
7 m8 J7 O1 y6 B' q% w7 }; `- b* R- s+ A3 g1 w
[
( Q6 S& N& U* O% w( j* c$ N! ?

, t3 V. h: N8 r9 Q, |, f* H. Xrt random 360

+ b* i# b% t9 d( a) |* Q9 j/ I. a* {, N
fd 1

, o8 s% x3 J' q! M2 \5 o3 d9 r
' S8 k* @0 J: x6 C5 x& p# F: m+ B]

  j8 |3 T+ w0 P9 U  U& [2 P( K( Y8 E6 g
end

/ \* A' x, A% T# I  _' e
3 c2 ]' x9 j% S! ^# d8 u5 }7 Q+ mto do-trust ) ]' q' E% Z& f$ C# ]
set trust-ok False, ?1 a3 T8 t% K# |

. J. T! I6 |6 y" K. Z. s. j

+ C! e# z( D6 g/ Y7 llet max-trade-times 0
; o4 O; A0 r$ O/ T9 fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 w( X( {2 e2 [7 Jlet max-trade-money 0
( I3 r% u; ^, d6 B) N+ X$ F; bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 G) @0 b7 l  k# Z9 q0 O5 X& Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 A1 i2 x" x: j) r. ~
: [1 G" L: \6 g) t4 _3 I
# l! c+ G, Y8 d7 `* F! o8 M
get-global-proportion* V( u' V% K$ M+ U( ?% q2 ^
let trust-value" B' V9 f3 A. v- e, q
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)
) W: p  g. j. `5 J
if(trust-value > trade-trust-value)
) U3 O% F$ c: D$ j2 |4 T; r6 X[set trust-ok true]& K' |6 B7 t# S
end- V/ w9 W" S2 b6 s+ R. u
7 k1 ]6 x0 G& c* ^6 F, B$ c7 z# Z+ T
to get-global-proportion. K9 j; s9 G* I; E
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 x5 |8 {: p$ N# y6 ~* h9 T[set global-proportion 0]1 G0 k) Z& ~' K2 N
[let i 0: ^" Q; K9 B+ y
let sum-money 0, B; x( B1 h; b- v6 t% ]  J
while[ i < people]
: k$ K/ w- M& ~  i0 l! ?[) z) B! r' x/ _! D
if( length (item i4 N- D% e! O6 D$ X
[trade-record-all] of customer) > 3 )

$ @4 i  r1 r' q) R0 |[
+ k& h) |1 G: O6 E2 Gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 o, l# \9 h* u]; T9 H+ I; R: T$ |2 F
]1 a. g' l4 z$ v+ M+ }# p  J6 \
let j 0
( M8 c8 O+ _1 |) `; Ulet note 0
% A2 f$ z, L+ A5 j; ^while[ j < people]# d) _+ S  {( F9 }
[
9 L7 J' {  N/ G0 |. B8 Gif( length (item i
- k6 K& N: u. w  i" {7 V1 k8 d8 Y[trade-record-all] of customer) > 3 )
% Y0 I2 M# X9 j3 h& i
[% ?5 `" @2 Y9 D5 |) b5 X% k1 k
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 X& T7 F) \- i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 m+ i" l* l* S% Q$ d
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
5 }' \+ B  Z3 E7 l7 a, a* n$ K]
, x$ f5 s$ k: D+ Z9 K, ?5 |]
! K( J' ?+ b! U' Fset global-proportion note
+ U9 y1 Z" _7 Z9 U]
3 e5 t2 K+ q$ `1 ]5 G9 q8 {end4 o+ r: O) g3 ~' `* Z+ F% L
( l; ^7 x4 D2 D& Z4 h7 g$ @$ E3 z1 n7 x
to do-trade% j! h8 Y8 [" K1 b9 H7 _) |: r9 R
;;
这个过程实际上是给双方作出评价的过程
4 @; B1 B; }; d  L7 Jset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) j1 r4 N" C7 L& k6 L  {6 Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' B6 J1 X2 m" n6 i- Uset trade-record-current lput(timer) trade-record-current6 _9 S7 K( Q2 A3 ~
;;
评价时间0 ]& Z9 E! F3 M
ask myself [0 u# j# x8 X8 O/ B3 e4 Q# i4 U
update-local-reputation
. P4 U  h/ q) u4 Y0 ~set trade-record-current lput([local-reputation] of myself) trade-record-current
, e  F3 v5 [( [8 E0 h- O]
% J( ]  f$ |6 p' e0 t3 Lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, e. z$ `$ `8 ?: K1 s' H' A
;;
将此次交易的记录加入到trade-record-one7 N7 B) R: H6 ^6 j# o
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" W* b  ]2 J6 `7 V( ?% ylet note (item 2 trade-record-current )" G! b2 k+ _9 f; a2 l9 y
set trade-record-current
: C' q' o% l5 E, c7 x/ F" p(replace-item 2 trade-record-current (item 3 trade-record-current))
5 W' E2 K" ~( ?+ R/ o
set trade-record-current5 s4 K5 p1 b$ L7 Z; g
(replace-item 3 trade-record-current note)' W7 A/ l5 y2 S
* q4 N2 v% T, x
. G3 t% F& W+ C1 O8 v# O
ask customer [
( f- S" @$ n' Dupdate-local-reputation( @! ]! c" Z8 b# \8 ^: d
set trade-record-current" x1 O* f& E' l4 F' E9 ~0 e6 m' ^0 T
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* D6 w& y) Z+ ^; `- _]
) x3 B6 l) w' J  l! `
7 {% o" [& \  [+ g$ \

5 [: r9 F, A! b( }( S( g' y0 n/ l( U+ \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 F/ J* O+ C' ^, t/ V

: e. ]+ I- Y, X! tset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
4 W: |$ j2 V7 T+ K5 \;;
将此次交易的记录加入到customertrade-record-all- k) p7 Z  Y0 ?! [9 ^+ H# W# H
end
+ |4 ^, i& S- q# }
8 G3 {5 E% [! G4 `- u4 Lto update-local-reputation: e, M0 p* B* F" h/ y: c, R1 F
set [trade-record-one-len] of myself length [trade-record-one] of myself+ h1 E; q6 u! A6 c, T

+ V0 n: S1 k, [. F2 G$ t' I9 @1 |! ~. q" r: \
;;if [trade-record-one-len] of myself > 3

6 @- z6 P% F' y# mupdate-neighbor-total
" ]7 C) Y5 r; g5 ?* L* w! k* ~;;
更新邻居节点的数目,在此进行
- {2 l4 z5 g' l0 @- U1 }" o' H  glet i 3
* T) T; D8 o4 e0 k6 |! Zlet sum-time 0! k/ f. w+ E! O. W. _
while[i < [trade-record-one-len] of myself]
1 S* p/ v) L/ }1 {. z4 M8 N0 E- r[
4 P8 f, B- E; g7 ^' Rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): v8 K( H. P. N, y! l  S
set i7 i) g3 T7 e' w- J
( i + 1)

: n+ A1 S6 R' N9 z5 K6 p3 O0 Z]
8 E8 X# N- p- U+ t* U% j5 hlet j 3
/ d0 R3 C. C" U: U, F9 nlet sum-money 0* M) F" t% {6 H5 `! U. G
while[j < [trade-record-one-len] of myself]. p+ A+ |& \" x
[
' O* O1 H3 ?/ Q  g. sset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)( ^$ S8 v0 h) U7 ]
set j
& X; s: B# F% [9 s! Y/ g" L( j + 1)
* R7 w4 Z7 o( n% n0 b2 B
]
. {+ K' [( S$ w, Q# k. i8 ?4 \let k 3
' `( s1 x) n4 c9 elet power 0
3 Z- C3 p' s7 U  d" T( {6 f. Flet local 0
, E" I  y8 y7 M) A2 S9 h6 Rwhile [k <[trade-record-one-len] of myself]
: r' a$ C0 c" ~0 ]% L[
: n2 i. h. b0 P5 qset 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) $ {8 x  s- \. \; M  @: V
set k (k + 1)
3 k; l7 a0 h) g; w( t3 J]
! o1 _6 h; j% a; \9 z% l0 A' Sset [local-reputation] of myself (local)
1 \+ v! T* m5 p8 X6 r# ]$ @9 }end
# u" _4 U  L! j& Z- |. n$ u* b- O% X( B2 D1 r9 ]
to update-neighbor-total
8 _2 h* s% E$ K; h6 j$ b7 Z! g9 v9 L; f* c4 i- k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 D" a: m  R* j, k: z6 X% P0 {  T0 _! P

3 Z- h' ^) f, Z1 ?& Fend
  r5 I# r7 l# b2 c+ ?/ J# }6 x/ V7 z& o, K$ O, H8 x
to update-credibility-ijl
- L5 I7 ]* w: K  ~/ Y' x. v3 K$ C  t7 e, 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。
9 y2 w* {% [+ D; y& z- ?9 k: Blet l 08 Z! J4 u' M! n5 l; D
while[ l < people ]
1 x' \; H# j  d; d4 P;;
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
- m2 y. e/ |8 F' p4 }! q( l[- @2 r4 r. Q; f  o6 |
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 H5 ^+ U6 ]9 O! H2 [1 Bif (trade-record-one-j-l-len > 3)
! T8 R7 J2 ]7 w% z5 G' _- L[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
5 w4 h9 _. ?4 {2 V5 Slet i 3! p3 G6 s( G; x7 D! h3 `# `) \
let sum-time 0
# s* i  h+ f: J7 z. twhile[i < trade-record-one-len]
- L4 O8 U0 t7 h" z6 O2 l9 d[( Z0 |/ j6 O& H9 K; y3 t+ x
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); }2 @# i; s4 I, K
set i0 L! E. J: V! w4 J+ r1 g
( i + 1)
6 }$ q: U0 a& G( |' z4 \
]5 s/ B7 n8 q" M' K
let credibility-i-j-l 0) F5 k% n' T: a# q& H
;;i
评价(jjl的评价)
( n. k7 I4 r$ [3 ~' s3 B6 z( U5 ~! Z, ]let j 3: P# Q; r4 M6 l% O& D
let k 4* t4 ^6 n3 p) s
while[j < trade-record-one-len]
5 G$ T3 Y, y+ g/ s[
: E8 b9 Y0 A: \, t- _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9 X: j* ]0 A: z9 z5 b2 C, C+ e* P
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
2 `* R3 Z$ Z1 b; M  R9 Gset j
! K% \6 r# O" W1 d& G+ o( j + 1)
/ d) N5 ~& q9 N  @; h
]! |9 }" v( ?& G3 Q  `" C  s) 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 )), q5 K! y* E/ {+ K# L* _9 d8 O
+ B! x, [$ ?' ?1 ~. M. `! Y: x

* Z8 _3 T% }3 G, r) y& [0 }let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))6 n8 R# ]% S* q
;;
及时更新il的评价质量的评价
+ Y- ~, y  ]7 i9 u) g6 rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: l* A; m' E+ G8 Z: v
set l (l + 1)& X7 P. g# f5 h$ l$ y, S4 W" F
]
6 G" C5 q" j# s1 `0 |) t: _- Z+ F( aend+ a7 ?! L+ g' h# \

2 L) z. c+ W& H. @+ G% Z0 ]to update-credibility-list2 T3 ^% H" t; l& o& I
let i 0. W# ~' h% P5 Q) ?# w
while[i < people]
4 m  }4 @; \8 A% K4 N0 ?[3 t$ B# M( z1 h1 J
let j 06 w" F- K2 m7 x
let note 07 W$ [: }- _: v( r
let k 0
8 [: b  ~  c, l+ }1 f1 K% J9 B;;
计作出过评价的邻居节点的数目% S/ I" ^# W0 {
while[j < people]
* ^9 [+ d  x2 p$ N# O8 G5 o[
8 U1 N- K; k" v9 m5 c0 g5 \if (item j( [credibility] of turtle (i + 1)) != -1)& Z/ B4 Y( [0 d  o) n( {
;;
判断是否给本turtle的评价质量做出过评价的节点9 C- L5 @& W6 W- L' _+ D
[set note (note + item j ([credibility]of turtle (i + 1)))+ @' }: t& O; T3 j
;;*(exp (-(people - 2)))/(people - 2))]

6 k7 E( ~2 u  w* jset k (k + 1)
' Z7 ^  t9 j8 H9 U+ L]
& G* K/ G. `0 m4 nset j (j + 1)7 S0 I) D4 P. Q8 |
]  c, Y; s$ J% X( k4 U6 \
set note (note *(exp (- (1 / k)))/ k)3 r  D- n$ v$ W9 h9 b2 J4 s
set credibility-list (replace-item i credibility-list note)' E4 e' W7 E( u- l: ]' a6 ], C
set i (i + 1)* u' \# |2 i+ v. N# j9 M7 U
]
9 k1 L  U$ w! n4 t7 Jend) C9 v$ t$ q4 Q

  e' J9 s; X0 f3 @+ E6 s4 g- A: q5 ~2 Rto update-global-reputation-list; K9 [6 A. b, w1 \/ w. i
let j 0
& u! n! e6 V- O/ x7 uwhile[j < people]7 A0 A' W$ i( ^6 K
[6 t% X- i  ^& Q# }" d7 \
let new 0% ~4 U7 q, u( G& I- B6 i) B
;;
暂存新的一个全局声誉
' s2 i3 Y0 y# j  f  X9 E/ _3 B9 dlet i 0
# V- v. C# C6 C( g/ f7 k/ o9 ?let sum-money 0( U( q  Y8 Q  ^7 E/ y, g
let credibility-money 05 ]# c( o  u& T4 J3 S" X0 O1 s& D
while [i < people]' t2 R; Y. t/ n+ G$ n
[
, a% A2 ?6 r  P4 ^0 v. T/ \# q  w$ Wset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 g3 A3 Z) w& T  V7 S
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* n  A: S/ d1 K; @- j' j  N% r
set i (i + 1)2 a8 m, n1 {8 M8 F! }" R
]
# c5 F+ Z( _. S: }" dlet k 0% M1 A( Q8 T" e7 ~
let new1 0
/ ^, ^. d( `0 N/ m; _& g/ Awhile [k < people]
2 v5 H: Y6 }' h: `  I[
% d& }9 h/ p* u6 N7 |: F5 Iset 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)
/ k0 V# I: b. Z; D( Q8 G. [2 h" Lset k (k + 1)
# H0 X- a) s0 Y3 y; s4 e, ^# W]
1 l1 l% M" m' O2 U3 d1 mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 m! X' M1 ?% N  v* o6 ?
set global-reputation-list (replace-item j global-reputation-list new)
! S% Q1 @* i# ?set j (j + 1)
0 |: Z, w; ?! M, p/ ?]
* q$ ^. W& i2 g1 F$ W. u% Send( J: s! H" H6 L  T
; F$ ]; x0 e& S( T6 U* s; @9 Z7 L

) {0 K* ]7 a) i, c9 Q
& e# X6 F* U9 a7 eto get-color8 u- k2 G$ Z; S, I0 G
- ^, y4 |. G) c3 h6 K2 o
set color blue

% ~# k8 x6 Q* o8 m) Pend# Z  h/ r* ]' p4 b! G) {9 z
1 F0 u! s6 _3 m7 t1 E# R9 f% x: Z
to poll-class
( Y( D- |$ @5 }* a$ D9 oend  ^, ?+ Q' I, I% [" R4 s3 e; }
, O- [2 u0 d7 _& f+ F& T; n
to setup-plot1; V* I" y) k: l9 L& |7 z8 f! z
- Y1 J) y8 Y8 D: F
set-current-plot "Trends-of-Local-reputation"

) N: d2 [, f  s
. Y( X0 a% S# ~( Kset-plot-x-range 0 xmax

! F6 E- @: [0 J9 }8 Y; k* M* m
3 H+ o5 e9 w6 E9 |; v, u) fset-plot-y-range 0.0 ymax
8 G# u8 M) Z; d: [
end1 H' @8 K8 V: ~9 N3 S! q: X
6 ]. d3 [$ X; U( j# Z9 Y0 d
to setup-plot29 q( w/ G3 I1 o

' p4 S6 s2 ?, O& k* {" rset-current-plot "Trends-of-global-reputation"

/ j! W; U- p* s0 F9 D4 i8 t7 _
* f. f5 D4 A  z7 ?set-plot-x-range 0 xmax

0 j* ?. Z+ d% C6 I  {+ P
* v* Q; R5 O0 F. Fset-plot-y-range 0.0 ymax

5 i- S$ Z. z: t9 |5 _0 n7 \end
. {! z% l- C$ Y  a
9 n3 }7 s. y" n4 {: V& H+ Bto setup-plot33 @. r) f' ~" w" f

3 a1 m9 b& w0 `7 Oset-current-plot "Trends-of-credibility"

2 ?+ |1 ?9 s* _, z
8 J2 h( G% D, F) m+ A- Xset-plot-x-range 0 xmax

9 L7 U% E3 S/ |: [
. q* ~) T% F2 a! X1 `' I7 d8 z1 Oset-plot-y-range 0.0 ymax
3 y  n  D  K) w/ e
end
8 K& e7 q1 d6 ]
5 x: C  I, b* K9 tto do-plots
* F* j3 b( r- |2 v9 |3 Y/ ^set-current-plot "Trends-of-Local-reputation"
% _) Q& T: b4 q4 T1 [set-current-plot-pen "Honest service"( I6 M3 k  F1 B/ Y0 x9 R
end
# }* z1 r9 @+ [$ `. o! x& @8 h9 b/ {# L. u6 x
[ 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.* I! i( h) @% w) s" ^

! y3 n" @  C2 w& V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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