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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:
, w) m( P- G4 ]3 q! A) K2 \+ Hto do-business 0 T) h$ I: p7 `3 x, x% F
rt random 360
6 F% |" L, z6 ^1 [ fd 1
7 a" r! W" Z5 [- s( c0 d6 J ifelse(other turtles-here != nobody)[
; G7 P9 \5 g, }- `# \/ J+ K! ]( 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.
4 p  t8 b- v* l# {2 d( `   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
& [/ \& [* \6 S7 l4 O   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 S, v& m4 p" o( C7 N+ _; M7 L
   set [trade-record-one-len] of self length [trade-record-one] of self9 _0 Z- i8 {) M
   set trade-record-current( list (timer) (random money-upper-limit))% k! z0 C0 p: i5 F! q$ r
9 v% m4 X0 s) r" f
问题的提示如下:
0 G3 R1 p- I" D' ^( Z% Z1 r; x" \$ U7 _* a7 m/ b  `6 h
error while turtle 50 running OF in procedure DO-BUSINESS
, G4 b# O6 O  l3 W1 |$ C  called by procedure GO
1 P# _) e, U0 E; b- u* POF expected input to be a turtle agentset or turtle but got NOBODY instead., m; h* s- T! |9 J) `2 k) v4 E
(halted running of go)
6 L/ J: S/ D' I5 s% [9 w( `" B  h. ?7 Z! 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~~: _7 B9 t2 ^1 ]5 d$ g& q) \
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' F/ \' f3 ?6 e8 h7 y$ v
globals[3 j8 p7 d7 ?  g; g9 k
xmax/ B! R+ i! L6 y9 M/ [9 y" k$ V
ymax
  m( g7 N- ~2 V# S/ ^global-reputation-list
% ~5 Y* [( R; N" S- t; z3 G" ~% g  L" R
;;
每一个turtle的全局声誉都存在此LIST
$ |" K: l3 y; E2 I" L% qcredibility-list
3 x2 P# m# U+ Q+ V) N;;
每一个turtle的评价可信度2 R. k4 g9 [" |0 p" V6 f( }7 z
honest-service
. Z$ g& T! m- G0 A" Eunhonest-service' F# m3 F4 R) |' F4 Y' _
oscillation5 ]4 {, z2 G9 e( A
rand-dynamic
& u' j1 I' m; a0 l% u]
  O% R. ^9 A' _
1 L. ?1 }) b: W8 }turtles-own[
. a2 u4 h/ M5 c9 Wtrade-record-all
' M- @2 S+ s6 l! A;;a list of lists,
trade-record-one组成6 C4 Q! {# k. u7 f  b1 X0 J
trade-record-one
$ p0 Z: W3 b: [;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录! x6 M' b; D- \/ \+ N
  p* y4 ?% }, j9 G. J6 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]]  j" l& t# L8 E
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]" N, Q1 s* k1 J6 s( |8 f. 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- b4 J$ C: D/ x' ~+ C" E5 g
neighbor-total
+ e& n/ N; Y* e) |/ J4 M6 c; H% X;;
记录该turtle的邻居节点的数目
; z) l7 a' o5 p+ _8 m: s4 ~6 Atrade-time8 x6 D. i4 w; u4 ^% d& D
;;
当前发生交易的turtle的交易时间
7 i8 h4 d3 m& L) }9 uappraise-give/ I7 Z. Y, Q) z7 z$ {/ ?
;;
当前发生交易时给出的评价& K% M9 q$ R* l, }% q& u
appraise-receive
, K" q2 e6 M% ~% V0 T; V;;
当前发生交易时收到的评价1 S. Z0 s6 a; j" P
appraise-time
1 U( p: ]2 T6 O$ B6 W8 j7 W;;
当前发生交易时的评价时间
# a1 T! Z/ x/ m. tlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 ]3 N. q1 b& |: R+ I1 u9 V  vtrade-times-total
4 c. t/ g( R9 W, ];;
与当前turtle的交易总次数" |7 f  S1 {4 u# }" e: }$ G% R& s' o/ w2 x
trade-money-total
: ?3 q  ?0 Y7 Q+ x) H* J8 x;;
与当前turtle的交易总金额# [* A/ q' U/ B, v8 i+ `; ^
local-reputation# K8 s6 `, H; |' D* F; u
global-reputation
$ P$ r# V$ Q! Y' p, ^. acredibility
; o: Q8 B& q  P/ [/ W: j* A5 q;;
评价可信度,每次交易后都需要更新
; H3 x8 \# C0 o5 r! ecredibility-all& o' v0 }7 v1 }: G) D: y4 F5 \' M
;;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 m5 x1 @+ i, [+ Z9 T/ B8 k& S) I; _$ _
3 p7 t+ Z! {8 X* c2 R1 `;;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
/ F" y' s8 H$ V/ K' scredibility-one0 T0 S+ i  M9 m, J
;;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
9 B1 e/ w( `6 g3 }  xglobal-proportion! \0 g6 r/ N/ R
customer
" h9 y; T6 ]- l& e6 E( d2 I8 m, x8 {customer-no; a+ w* ]9 ~2 M2 P% z
trust-ok: n  T+ k; j. p/ D& l. W9 l: s
trade-record-one-len;;trade-record-one的长度
( F/ M0 u' J" l/ g( O  v' v]
; I0 i4 L6 K% N+ g6 V0 j& P
! n* @4 c" X% }6 ?;;setup procedure. x, ]/ }% ?! ?% G$ K$ B1 n
4 {5 k+ q$ n- U& C3 j/ e
to setup* N, I; O) U( \8 ?! I& g  K

! O; Q. ~( X5 W8 Q. e) S1 M  I* Tca

' i; l5 S: S1 J: W9 z- Y/ t% N* L; Q6 l: z
initialize-settings

) i. J, v$ Y+ i8 X% B/ S/ a* C6 }( V& {5 p3 M' e% M, D7 h7 I" m( Z7 q3 b
crt people [setup-turtles]

) L# F% M! P' r) [' |+ g& \
0 L# C% {! t2 p  Z6 r% Xreset-timer

- \, J; Q0 M# \
3 w: V: {1 S, n& Xpoll-class
* o/ U" @3 z7 C8 f5 F( q

. a8 t3 L+ \: v# Fsetup-plots

+ [5 G# S' l6 M" t. H3 X2 Q
" P# G% U% m0 Z! X4 L  j5 O5 d* b3 Zdo-plots
8 M4 W$ v- n2 Q. q4 L3 s
end
% g  Q/ P8 W# ]# L2 ?: f+ C9 M, j
; h% z/ s5 l% Y) dto initialize-settings; U2 a1 g0 K2 ^. }7 `

$ [; g: k# x1 J; \5 |( ~" U3 [' k; qset global-reputation-list []
" L" [6 |  j) J6 g  m

; I9 y6 O2 o# c2 F: qset credibility-list n-values people [0.5]
! a( V4 l6 ^7 P0 s6 C! t
1 g2 _8 X3 [$ c
set honest-service 0
' R+ v; A  c$ S( [  l

! U! g2 u; c# X, }; P5 Tset unhonest-service 0

! l( w0 ~6 \( z4 P+ Y& c& u) n* u: k8 R7 Q) D. R7 \
set oscillation 0
5 T1 _3 X" J$ O$ q% R% L

: T* Z9 j- l0 U, [set rand-dynamic 0

# x- h/ I% h% C& Eend4 c& h6 @+ E1 `1 C& \! F

. A1 M1 k. N6 U! y$ D1 `to setup-turtles
$ a1 o( `/ z# ?set shape "person", ]) G6 q( G& U( i) j
setxy random-xcor random-ycor
  l1 }+ t) {& |: ^* Dset trade-record-one []* _+ s# z3 i0 s3 O* a2 s8 W
4 }5 Z& T$ F% w6 F  _3 H8 N, K& {
set trade-record-all n-values people [(list (? + 1) 0 0)] ; e0 r& N5 L6 ^. k

) J7 Q& ?$ @# O* e. N. ?5 g; G3 Eset trade-record-current []7 K, {( D/ I/ W2 t( H( ~7 d, ~
set credibility-receive []0 l% |! G6 C; r# @' a4 o. K
set local-reputation 0.5) n6 ]1 D+ ]6 S# Z" ~' r+ Z
set neighbor-total 02 m% ~- S8 }. h, x& W
set trade-times-total 0! ~$ ^# T  o! x0 h9 d
set trade-money-total 0
5 b* O- W: v( p! K4 n- Y, Rset customer nobody
8 @4 B% i  G& |set credibility-all n-values people [creat-credibility]
6 `' C5 ?# r" d6 d+ Pset credibility n-values people [-1]$ r* M3 b7 C% z3 s( y5 I
get-color
6 d. F8 h: O! T  C4 |

8 K  }9 O7 _) Y$ ~6 O1 P/ B4 jend$ @/ g" H7 O+ L
" m# x8 k+ E( Z
to-report creat-credibility2 m, l6 z; r2 {- ^
report n-values people [0.5]
6 z$ C4 ~6 y) t( J! S4 Iend
9 V) C, u1 t. \: K# ~
: b- {# L! Y; lto setup-plots
. {! C& s' O1 Q* }$ E5 p& Z4 j4 Q% r1 g8 p
set xmax 30

0 S: g. }$ o  Q7 q1 i$ l: r& v1 f# c' o8 S
set ymax 1.0
5 ]1 Z$ }! e1 k! K9 _( ^7 T
. _; S( m0 t; G% P8 f
clear-all-plots
5 R" R' q. n% C$ a

# C6 k4 ?% E) E! \% Y- esetup-plot1

0 S. f% Z: c2 t
& F# ^* b4 W; E8 h; c4 g8 H. `3 Qsetup-plot2
  r- n$ Q/ w  n( E6 _  |, m
( Z9 K9 ?5 P) |+ |  H# e# Y
setup-plot3

" b0 l) r. L9 Tend# P  Q! w/ A+ g5 G- ]/ B3 W4 m9 T

% T1 i3 @6 R/ };;run time procedures# ?7 e' V/ i7 f/ S; i: W) S3 ^5 Q

  s% W+ O" U- T0 xto go5 o$ X1 t1 a* F  h
  G  q: ^; ?) I! K
ask turtles [do-business]

. J$ c; z1 J  j% W4 ^" e8 \4 }end
" ~/ {. O+ Y, O! i. P
+ O" W6 Q% d$ U( c) }$ hto do-business % ~* k1 [/ {) T3 H) ~2 {' I
  V! p- {6 P$ H6 A# u
) h! C- ?! b3 \6 D
rt random 360
$ G! o" i2 h8 O9 \! k9 L2 P; I2 f

! f- [& f' j" l, _9 T, N- i2 W* b& Dfd 1
  }& ^& C; d9 y) a) P" D( {( \
; f5 A$ I8 B" i; Z/ u" ^# G
ifelse(other turtles-here != nobody)[
' b* d9 U( T6 [2 d1 v! j2 X* N" g

1 I1 F: H. I7 Z; q1 |/ w! ]set customer one-of other turtles-here
5 p5 G9 W$ H4 y

" u& h4 n4 B( B/ J;; set [customer] of customer myself
7 s' P/ V) V$ u  L) c/ e, j3 M
# Y# b# L% Y1 b7 Y* w6 M% |% u
set [trade-record-one] of self item (([who] of customer) - 1)
. J5 N5 q+ J$ |1 K[trade-record-all]of self
& y  Y! {& J: m7 l% s' D+ w4 c+ F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, P* D1 j$ o8 y" P4 M, y8 ~; z

- I( M' s1 m+ I% Nset [trade-record-one] of customer item (([who] of self) - 1): r6 f% l: J" u' |3 x
[trade-record-all]of customer

7 T8 z: n1 r2 N. N  o
8 o3 @9 H  I( g8 r! T$ Nset [trade-record-one-len] of self length [trade-record-one] of self

" U$ `/ }) N' W  j. i4 E  T) M- @% l. ?' e
set trade-record-current( list (timer) (random money-upper-limit))
" W3 f8 ]& A* G. s5 O# D2 _

4 s7 r! O5 v7 G5 g4 T: R; t" qask self [do-trust]
9 N( L& a3 I: O+ Z8 D;;
先求ij的信任度4 O  H" S  U$ i

/ R1 R! S7 m: m; u4 P7 F) p1 lif ([trust-ok] of self)% |1 c5 k; q* y3 b2 P
;;
根据ij的信任度来决定是否与j进行交易[% }- K4 h$ w" A
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( M( r3 D- U) H% S! y2 m1 p

) ^9 f& A4 D4 {  I: h[

( J2 s7 y; A+ I9 H0 K1 t
1 w; k9 V; l& F) [4 s* L9 @; J- E; ado-trade

* J, A  B7 x2 y" Z( E/ e5 U0 y' b* l) D) D, J
update-credibility-ijl
( x" e2 L8 t1 M: M, D. i* y

9 \! h9 y. Z9 v8 Qupdate-credibility-list
1 P5 y, y; L6 }9 T" q

( F" D0 a" I$ ]2 x8 U: K$ S* Z# X# H# a
update-global-reputation-list
& e5 W" F% a, W+ B1 }& X
; ?4 V; g, t' g
poll-class

  h: {) ^- a. N3 W) M5 W
1 T6 E) @, e# \8 e7 |- nget-color
7 D6 u8 ]& h% {/ }3 y
6 r  ?& w3 }; \+ n! Z
]]
( S& d3 {7 ?# q' S6 h/ b5 g& p$ ^6 W; h: J% b
;;
如果所得的信任度满足条件,则进行交易0 z% ~* }9 |( A7 Q  w2 M

. Y2 H/ s& W* a, _: n$ F[

5 j& V0 M- u% }, B; e+ ~$ F$ t" t# M. Q) f- h8 B7 E! O5 m
rt random 360

% ~% ?/ f5 r& ~# C2 r& l# ^
! r! R- h  [) Tfd 1

6 u8 ~; N* B) D8 [
% R) [. k: M) G7 a% e/ q7 G  L3 @2 B; k3 d]
5 t9 P$ A! h5 d+ B" ~; j$ G

6 [: H" `6 L5 S' u: yend

* q  S- E/ J# L# n! q
* G0 t$ x( R% N' lto do-trust $ j- I: U) L5 v( i2 J& n
set trust-ok False- u' a) Q. ~6 w7 T2 Z& ?( `

4 _6 Z$ G4 Z! L' J; p1 z8 `
5 F  U" `# w; R! y& p+ m/ _
let max-trade-times 05 c/ ~+ b4 }2 S7 D  E
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ `! R- ]) {4 x% j; H" Tlet max-trade-money 0. @' w* Q; l6 E, t$ h0 m* m# v6 Q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  t7 @, j( H) b- S" Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))1 e' i1 n+ p7 E" P% f9 I7 B8 K

% ~* D2 ]7 ?* c: j8 j7 f

5 U7 G0 E- [) E  W" f1 G/ R0 d5 qget-global-proportion
0 ^( x8 N# p" ~6 f% Jlet trust-value
  L% I# }& n3 e  @: z) nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

4 `, {* K3 T2 Zif(trust-value > trade-trust-value)
$ ^  z) T9 U4 d; V; H% S" `[set trust-ok true]
# }4 o0 ~/ [; P0 ~end
3 B' x  C% R' X1 l' W, y. V- F. ^
" x! q2 d# T; J8 i4 Hto get-global-proportion- d# s1 P# B5 d  j* m: W
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 C! b3 a" t4 _2 ^& h- T
[set global-proportion 0]) z  n5 M( L  v4 z
[let i 0
7 m  ^) m) n  x* v" x* olet sum-money 0
3 F- m6 Y6 P, N, L& kwhile[ i < people]
3 h  w1 W. h: ~& ]. \[
# U9 Z& m1 G  ^3 k; e% Kif( length (item i5 P( b1 p6 w/ t" D7 O( C
[trade-record-all] of customer) > 3 )
( Y: F" V8 m  w8 T
[* [7 m0 ]% y  o
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& v" J( k/ a' E- i]& p: c, d4 A& s  F0 i, Z
]) X9 B( n- x; P# J
let j 0* F  {- q" b# t( U
let note 0" J/ K, y1 `$ j% m+ ]3 U1 s5 a) K4 T
while[ j < people]( Q) G, q* z0 p# @" q' |
[( ~! W/ `0 O1 ^# t1 X& @) c8 M* A
if( length (item i% M3 S/ R- {' ^0 J
[trade-record-all] of customer) > 3 )

3 Q% v4 E8 {  H4 B: J[* b% C4 ?* d  o1 U9 X! D, e0 a' I
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! u: z8 L2 s% s7 ^7 S1 M8 S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]: R; o4 j4 S  [* k6 E) _4 l$ z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% J' ~) E* X. I  n7 L) K]
. z0 a& G5 B8 n# n! e2 ?+ @]
0 {& [' n- S+ _) y$ k" i# x. Wset global-proportion note
; p- `/ f: I- z2 U  ~" ?]
5 s. R8 ~5 H5 {end
: ~' B3 Z6 V0 i4 p. M7 s
, W8 z2 S' d. H- Qto do-trade+ m9 t. ]. ^6 y7 m3 I
;;
这个过程实际上是给双方作出评价的过程) E" v' x# D0 K5 m& ]
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. N, `* e0 Z; V: E# N. Iset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. G6 A- z' `! K. b% u3 w
set trade-record-current lput(timer) trade-record-current
# G& T9 N, A- R3 I" I1 U% ^;;
评价时间1 `& N' p4 ^/ i9 r) z# W" J- ~- A
ask myself [  F/ g9 ~, [( E! K9 S# X. K
update-local-reputation1 `9 I+ C" ^1 {  o
set trade-record-current lput([local-reputation] of myself) trade-record-current& c& b" x. T7 B
]: G( x3 w3 C) T' Y4 t5 A2 ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 n$ v7 E% |9 E1 ?0 N" {
;;
将此次交易的记录加入到trade-record-one
7 i0 A) c2 E2 F% |set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! u$ ~, e/ y( M& w
let note (item 2 trade-record-current ); a( Z+ n# u' ~! T
set trade-record-current0 w& G; ]6 r) X9 f5 Y
(replace-item 2 trade-record-current (item 3 trade-record-current))
. p( f1 A% |- r* t% P! w# s# Y
set trade-record-current& I# I- U# o$ y! J. W( G
(replace-item 3 trade-record-current note)
5 g8 Y! {( s3 C+ [5 B4 b
) o- o+ P0 {0 P. D
  W( E* Q* g& m/ V! q
ask customer [
0 m! A) ^/ q# a- v( U* k) iupdate-local-reputation
& ^$ \+ ~( ^% D( ?) W6 p* Mset trade-record-current
/ c5 O5 w* U" o6 B) V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
- ]' V* M8 k1 [/ X& A' o
]
& Y( X) C1 `2 l+ q+ `. ^- Q/ v! {0 N& e  P

5 ]+ m% \: t5 w) D# p7 w7 h/ W' fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- ^/ a- Q  ^5 `; y2 b  s" g
+ Y( ]* D! A* L- F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). X  c6 k5 Z4 f; s. W2 q7 [) W$ K. e0 `
;;
将此次交易的记录加入到customertrade-record-all
$ R( C: U1 G: m% Y- Q# k7 Mend! e1 A- G7 W: U. Y9 z
+ q* ^3 _$ ^* I* u! N0 |. f
to update-local-reputation
# Q0 @1 j  q# S' Z! U3 E6 B+ cset [trade-record-one-len] of myself length [trade-record-one] of myself
' M: A! O- H. Q/ e6 [
4 G& t8 M9 p4 l3 p3 s( M5 n
- W* `$ C, D) o8 r! R1 M9 u;;if [trade-record-one-len] of myself > 3

: ~# N+ P5 k# x# |1 o2 Kupdate-neighbor-total2 k/ o' @) S  r
;;
更新邻居节点的数目,在此进行3 y* u; ~$ T% h% d3 I
let i 3
# H2 y3 Q& z( Y8 Llet sum-time 0
1 R6 T2 ~* p1 W, j# Z0 }) Jwhile[i < [trade-record-one-len] of myself]
2 L8 A% [& X! e# ?( X[
0 ~, [; a& d) s8 _. D" C; u( e2 [& jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
/ L: @2 n# B: `( p5 r- tset i
1 i! X- L; k  u  L( i + 1)

5 y  m1 B4 K" O- `: q; H]
1 Z" w; B6 v, m/ q: F3 z  flet j 3
% Z: C% q: B" I* F, qlet sum-money 01 [+ u1 Q" F# X2 g0 a* i
while[j < [trade-record-one-len] of myself]* j3 c8 L+ U( I8 a" L& `4 D
[3 _0 p# @7 M+ q+ s) p4 a
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): _- Z* h0 y7 O, U9 m. C# g0 o
set j
; T9 f% I, `* S1 p7 W8 T9 b1 e( j + 1)
* {* f8 E( {& H; p* R
]& Y5 b; y' v0 }. W7 v
let k 3& l4 D( s) A5 C4 t
let power 05 S+ N4 y" @/ y$ u
let local 0& b( ~; z% h1 i$ u! n
while [k <[trade-record-one-len] of myself]
9 C$ S. r, L+ ?7 A[
4 U& g7 M+ A8 J- P5 kset 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) & A) f  R  U5 p0 b
set k (k + 1)6 G$ }9 q, I/ D, g/ r) P0 p
]
. `7 o2 R# G+ k4 [, _' _set [local-reputation] of myself (local)' _3 |. A" p9 `+ \1 N! c
end
$ t6 N) m" E$ {' V3 z8 c" j% S4 T" A+ @- y* s$ Z6 z; B
to update-neighbor-total/ R( |# e. M  J6 p# y
  S: n! P  X# ?, R! u! R0 p
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ D) \$ L% x7 U% O& F  C

+ {8 M, d# K0 V! B. x1 h

  K: @( y$ v7 X1 @5 e' eend# [+ X" i; Y) Z( ^  U( _& @: m  C

; v! f( S  Y8 B8 Bto update-credibility-ijl 3 u2 h+ v$ o7 V/ Z9 t; ~
* ^' s9 Z- p' N/ U( 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。
$ q6 ^/ `; \: H& w0 m+ elet l 0
& a" z" w6 @! G4 [while[ l < people ]4 _. t9 s) `2 R, d# y: z' {
;;
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
* L, f. {! x5 N1 b  D! f- z' |[! A+ F. X2 B9 a; \
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)% H( {, B, Y/ ^3 \# V# n
if (trade-record-one-j-l-len > 3); \& j) c* h' T: _- u" t. R
[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
! s6 ?/ n9 ?+ D+ T  @8 tlet i 3
. H% p7 r! b* I- l* h) `let sum-time 0
# m& Z3 a! h4 b2 c! Y2 @while[i < trade-record-one-len]2 W5 F. `+ s1 V$ {4 {
[. O1 s: l; `+ Z# ^& p  e* G5 `
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 `$ y7 I& x, D, R- K
set i
8 Q4 g  r- {8 h3 [( i + 1)
) |) e2 w' J6 |  B* o. L
]( \# a) n8 V% y+ \7 z
let credibility-i-j-l 0: z  R/ T! a. D( H& s
;;i
评价(jjl的评价)
$ t) E' E! E6 M, ^7 Alet j 3
9 [" _# c* \+ K) S, ^7 llet k 42 }3 d) c' ^7 N1 ~1 J! N
while[j < trade-record-one-len]4 ^! L, w! e9 z2 V
[# P/ |, M4 e3 u. D1 u
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" a1 z6 Y2 o. X' T" Y, y
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)$ A$ X/ Y+ s2 _& Q) T- n
set j
, A: J3 B7 m/ M; o( j + 1)
) P# B% H& [. Q  v- H: m
]
/ q% l2 T9 `+ v: u) \! V% {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 ))
. y, Y7 k& m+ N7 b+ p+ a$ [
4 b, O1 j! _3 U+ U

4 Z& e; r4 Y6 h4 M3 Q, J. Hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))8 o% p2 ^, r! b, c8 x
;;
及时更新il的评价质量的评价" Q% d% e7 o  B5 V9 P( Y# V0 d% Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" L) u# T# t2 q7 L3 a- W2 S' Hset l (l + 1), X  g. }9 G) R) Y7 C: w6 P
]
- G/ d5 R: L% f- w/ w; Gend
+ F2 P! k0 s1 i: F1 V) E2 ?/ O: Q5 A8 t: j' T. {
to update-credibility-list7 z% J6 p5 c" V: @$ r$ T! J/ b
let i 0" J8 Y3 @3 J6 g
while[i < people]/ H) V$ P8 ?. }# n
[0 v& m% |4 I8 Z$ h+ s& X5 ^
let j 0
3 g1 T  i& f$ Wlet note 0
& v( W; ]3 ?3 N) B* y) ~( Hlet k 0
# k1 _% t* N4 g$ T;;
计作出过评价的邻居节点的数目
1 F& h: u) R( xwhile[j < people]
+ v; w9 [  S3 w[
1 _' o! P8 a4 w/ o' k6 U* eif (item j( [credibility] of turtle (i + 1)) != -1)  H0 \$ P  x3 I3 @) O
;;
判断是否给本turtle的评价质量做出过评价的节点
) B' W/ f2 ]  Y/ M) W1 c[set note (note + item j ([credibility]of turtle (i + 1)))6 Q$ y) R' [* ]& b" [: x
;;*(exp (-(people - 2)))/(people - 2))]

7 A! S, ^: X9 f/ V6 H+ `" Wset k (k + 1)/ A3 ]# ?" j: i2 a- m& V
]8 D  _. ]$ {& G3 M% U) e
set j (j + 1)$ b$ O0 G2 p0 Z% A! C+ L6 X. U- @, j
]: }5 T/ v, C# A1 |+ w
set note (note *(exp (- (1 / k)))/ k)
6 O! G+ U2 p8 g( ^7 O7 f8 |/ t5 Dset credibility-list (replace-item i credibility-list note)
2 c$ x( C, u; `; Bset i (i + 1)
2 e- G" f+ G( @5 q  Y  y]6 g; x: {( @+ S
end
1 K2 d, M* q7 l- n3 Q$ w8 ?) i. V8 p' r. n7 e5 D; n  E0 X8 d
to update-global-reputation-list
% }# ]! ?# |/ A, c9 {let j 0
+ I; E8 t8 }: X& k; a1 {: T/ p9 }while[j < people]& f1 C" `! ?5 f3 T
[
5 I  y& M/ P( j% }let new 0
# d5 o/ k. D: s9 R" \5 ]+ j;;
暂存新的一个全局声誉* o& k+ |& F" [* [) ^# t; |; ]& U8 J
let i 0- a2 T8 g8 _+ L! g
let sum-money 0
. Y" ^- I; I6 C1 {& H! llet credibility-money 0$ E9 Y- M9 \# M  J6 f7 g
while [i < people]; n' q% T" t6 [
[! L0 S4 I% J5 u1 B8 T
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ B! O" u# d4 h! P5 ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). e# H1 L7 R0 E3 P3 Q) U: U0 x
set i (i + 1)6 W8 S  X" F6 E9 v: \  f- w1 g
]
+ H3 v) B) a* j- V7 Z! Q, w; @let k 06 B6 ?, s, F& w& B
let new1 0, C7 A& x# A' [, T
while [k < people]
" [' p- m6 B$ v  u9 S[4 C" A; ~0 \1 a6 L9 o1 k
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)
4 v- a' t4 [2 X0 a8 w" k# Aset k (k + 1)
, f0 t  ^, p1 v/ J2 e]
+ L, Q$ M1 Z8 @% Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! |' z5 n' J; D4 j8 k) ~! Vset global-reputation-list (replace-item j global-reputation-list new)
: ~" D. y# I4 d" B* D, Fset j (j + 1)7 V4 O, y" Y3 Z
]
/ g. l2 T% y& G: ~  yend
( f/ m. s, P6 U
5 K, J6 i# y0 [: m" M
2 o, h6 L- W0 b) _
/ U7 j0 U5 `% O2 l; P. O: Vto get-color
) E% ?  n. D0 I2 G+ s& j
7 H: O+ l% u. ]0 Aset color blue

2 b/ U& Q% U$ b& v/ `end
" O( |: u( z9 ~4 f! C! i! x0 N. f, |, n( F8 t; K$ i
to poll-class' R+ _( `1 L- }3 y$ i3 X  m
end
3 R5 a& R1 n) v  w4 J
& |& V+ K+ L' _/ A4 u( i4 @5 ~to setup-plot1+ a9 Y5 m$ q( o# g4 M
# R) f: L5 S' m0 f; P' [1 R/ }
set-current-plot "Trends-of-Local-reputation"

. h3 T& R/ e6 H$ Z7 S! J) ?( P" l9 z1 R6 H0 {; `7 F% b
set-plot-x-range 0 xmax

: o9 M$ D8 W. P% k
( @% _7 Q7 N3 W) h- K) ^$ qset-plot-y-range 0.0 ymax
/ O, ]2 c# p1 h! O8 f
end
( M4 C; S: ?! G6 W
. k$ E9 w  M- Q2 Pto setup-plot2/ K1 ?) A% r% X' B) {+ I
5 b) z) s1 B  Y. v' F# ^1 D
set-current-plot "Trends-of-global-reputation"

$ r- a) j! q8 {# w2 A( J! T( y8 b3 m) x3 S/ V+ B4 x
set-plot-x-range 0 xmax
' s2 \2 i3 ^% p5 |4 s
0 ^7 v3 T+ D# D$ U
set-plot-y-range 0.0 ymax
) A/ ?  `* M" \3 w( _
end5 [; j8 {/ \3 f0 H5 Y& ]
4 j4 m  z( N* v
to setup-plot3* M# _/ s: m; s1 t& `! ^

: b: A' n! x8 {. pset-current-plot "Trends-of-credibility"
& @! [- @0 @- W% h5 Z, Z

0 k7 `8 p; V: G9 {/ fset-plot-x-range 0 xmax

1 c% F  `4 n. z; L" `1 q% Y0 l/ ]. F2 H
set-plot-y-range 0.0 ymax

7 P3 ^, i9 E0 R5 Z1 c  T1 zend  |( |( @- M4 k

' C" n8 H/ \: ?/ F  g. vto do-plots' L% V; v4 F, V  {; M+ Q$ F0 R- D
set-current-plot "Trends-of-Local-reputation": P# o! \0 V/ t
set-current-plot-pen "Honest service"1 z2 n. \  l2 e- Q& g
end
# e( B7 E( ~* j1 b( X& G$ R
' e. m) j. C( ][ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
3 t5 v3 C5 e; c5 Y( D- g: o0 l- L6 X  \* I" O% s7 c
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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