Navigation in Degree of Interest Trees - CiteSeerX

Navigation in Degree of Interest Trees Raluca Budiu [email protected]

Peter Pirolli [email protected]

Michael Fleetwood [email protected]

Palo Alto Research Center 3333 Coyote Hill Rd. Palo Alto, CA 94304

Palo Alto Research Center 3333 Coyote Hill Rd. Palo Alto, CA 94304

Rice University P.O. Box 1892 Houston, TX 77005

YA
!>@¦+A$(UX+ A#6   LG0
$
(##SN($
XL
G $4 SJ
=% 
 $0G60
!8 
.
 (6#_ $
 &  LILA.7 $
ZA
!k  g|  A
!.l5L e &Š&   A$P.[4 S[§j
0K
 =
  & '
!() ( *+,-/.
0

%1 & %2 

3 4!5
$.)6 7/.853%29:$#
 %1#*;
@?BAC
 A$#D  $!E $ !F X+
J & 
R 
_8 : & $
R & 8 6C3 A A
L>]ž] $
S
X+
5¢o ¥z|F; S
4L#W 

Ro ¨8z|F ..
0

%1 & %2 

3 _ 

¢o ©z 5

!GA
H.I8 
.J I
K6 &  LMN 
4!5
!FR $
=SJ.,$  L#6
= 
H 
G ( * & 3 
 $T6U 9:$#
= %2#*;
4!5
!>GVB!W
X;
!F:I4 Y 2S
 & 4!5
!F VB!W
X;
!F Z D 
b & $
¢ A$D X;
¢
« SC$.C & $
¢
+ +A % A
Z8
& 3 
 [ L#
 
$0L\ & 8 6J 
 C
(  ¬0L
$
(8 
!.6e 
:A$
 %1 
 & 
­ LA$$D 2S FD ]ˆ$ ˆ #
!8 ( *+] #!J6 &  L 
 ] ( * >^I
W

 _C`baRcW% d LA ( #+.
# & $
:
(P ( *Be $
_OP?BQ$4!5
!> 8 &  A$5¤®L 
+ W 
($ f A
W

 5
!#.X (0
b  $
_
XL
 S.$ SeA
!>:¯]
 & $
­ &   A_¤T  
+ ^X+ A#6 !8% cR
B+.
#.
 4
R8MX+ A#
!8=H3 ( 
0S SZ Z% L$
!8Š P4
5#°80L
#DS & A$ L & $
R
#°8 LH4
 ŒW

 4$
[5D /
 7 
= K &  
  $0FeK! A
!.N4 S $

 6C & 
G$8X+0;8 LJ A$
Z$. $
HA$
!k  ( *+ >  & 8 L[ 
 !>_I
P# .
 4
PR SK & A  !#6#DS cR$H
#6 L/K ##
!./6 &  L/ 
+ K$.NK.
 4
!.
3 68 $0 &  [ 
 B7 
 & 
HL\
!8=\ ( *+5$
\ $
=SA
!.J7 S
4#6 

„4!5
5.
b LˆF;/$.!5R9:$#
 %14$
!. Categories V> mLneo pKq r+sbtujv and r+sw1xySubject rqz|{^cR$
Descriptors  S.e
 +. }8OC> n+> ~o €w1v=‚x$s8r 4
!5


b
!A$>­
=cRB
SZ„#L!$)#6A$ .& 
!.   !F [#D  $
 A$ „0L ( *+( l¢ 
¢
! S 

„gh4
L> 0#6> F ƒ„u^…†‡uˆrr+s†‡u^…z|{Š‰K
  Œ‹)ŽB‘6’ “”‡•h–’ —˜™š ’=˜›’=š‡œŽš=Z—(’ 

b SZ+.A$
& 3 
¢
 A#  F 
„ 
( LH4
 ŒW

 $
’ —˜™š ’=˜ 
+  f A# 
­ & $
¢#64
#Š$. $
RX+ A#$#6 S LA ­6 f A$D 
 $#
P.Pb#6
_.X (0
W!$$ ^
!##SP4
Š
!. 
!. &   $
 S
4L# 

>PQŒ.

!.jFjL$
 & $
P£$3 A
3 L$„  General Terms ‰K
 A

 !F$V„A$Gž  FcR$
 S   &  B+S4+.+SH  S$0 ZA$$.
3 (.K8¬Af 
„
= &  $

!8=I ( *+CI $

&   A$Z¤²  
+ 4!5
Z! .GA$
($ 
C58   &   A$e 
D 
 LYL³@`b
 $
Keywords Ÿ„
P3 A.
 F^A
P+.
#6 F^`baRcW%1dFjOP?BQ5 

 Fˆ &   X+ A#ˆ A$
gh
> 0>F$+.
P.
 D ŒS F L#!Fj ($0L

 5L 60K K
!
 
A$  & 6 &  L\. $#6 S
!.,  I
P# L*L
!.[ „ ŒR*+.G & 
!([ ( *+ {¢60%1 
 5 ( *+ Fj 5$(Z $
R (80L
 ŠD 
·¢­LZe$0L#S
. (4#
LF  L% 

W8 ˆF$.#6!¢%1 
 ] ( *+ FL5$( 
­ (80L
 :D 
¢ $6..
YA$.
#
 #6A$ 4#6
#64
#6 >GI
 ##6
 
!. $
Z 
 8 R
$#
B

!.
!.C P L#6
= 
b 
„
!8= ( *+ & W ŒR. & % &
=
 4!5
 F5W
##b£
0(N
S
=%28X;

 C. (  A$([B+A$4
5 & +.
b# L*;
!.[8 !F+A$4
5 & 
X+ D ( L 
+.
LFŠ.D
 LU &
S
H0; 
L>UcR$
FR4
!.JL\ $

.$8 (F_R
G4$A6#D C7.
 (6#
!.J 0L$D X;
H+.
#Š & !X+0; U

ABSTRACT 


 


    
!"
$#

 %

O?BQW 

 >RcR$
 0L$D X;
P+.
#  *K  LA$ „ L#
 X+ A#j
!(K$
L
$FRW
##¢
+ B 
 ¢ & 
 & 8 L7 
  60>e?B$
P & 
.X (0
B &  L0$D X;
+.
#$0,6Z $ C Z8X+°.
7X;
 SIW
##b.
£$$
!.I $
 S\ & 
5 
 Š  ŠA$
=W0L LA$0ˆ} 4$
!.Z  Š $
 S FL 
 
 & 
b.
 60$
­!*;
R#!¢%1 L3 Š
. LŠ4LA W
 .
 0Le  e L &  H 
C  A$ $e & $
+.
#]. 
S[!#  ?B
 & 
L4$#
„,
XL#6A$ $0H 
 & 
e6,.
X+6 0 L$A ( L$#j+.
#6¢ & 4!5 $0C6b