Creating Re-Useable Log Files for Interactive CLIR
Full text
(2)
(3)
(4)
(5) ! "
(6) $#%
(7) &'
(8) ('*),+ '
(9) -". /# 0
(10) 1)2 )34
(11) 5 0
(12) 6*1#7' )* )*
(13)
(14) 58&
(15) 0 *9 : ;< = >; "(@?A-B(CED F*F G #%F*H :
(16) $
(17) I
(18) J)*2 ' : ;)*
(19) #
(20) $5 )K L
(21) 5< "6
(22) $#%1M1
(23) NO4
(24) 5 $ =&
(25) P*<4
(26) # 0
(27) I*1#7' )* )*
(28) QNR )*
(29) I
(30) 5
(31) 9J
(32) I'
(33) 0
(34) ' "(
(35) 4MS @?A-B(C : TNR *
(36) S *
(37) 'UMV' :W: UX Y
(38) "Z 'UR
(39) >$[#
(40) $"Z
(41) \ [*'
(42) S)2 NT
(43) S
(44) 0 U NT
(45) 4Q 0
(46) ]&4M^
(47) S # )*
(48) $9_;
(49) $#%1M1
(50) NW4
(51) 5 *< S`"@*NO
(52) :
(53) 5
(54) PP'*)Q+ '
(55) ,". ="a
(56) J 0
(57) 1)* *9`3 0
(58) '/ # 2 $YK)K@?A/BCb
(59) 'U
(60) \Y' )*I*45 )SNT
(61) PD!NT''*S'
(62) , "6 5 9. 1.. INTRODUCTION. @?A-B(CV3
(63) cd
(64) $5 0
(65) c5 $eK "(?A-B(Cbf7?(*1#%A/ ) )
(66) B 0 ' > RC NKg$h2 R '
(67) 0 ' > T
(68) i
(69)
(70) `". ,jS'UU# ') '2kl". NR >*Jm3
(71) -1M1
(72) NT9/k%c@?A/BCnh*1#7' )* )*
(73)
(74) 5Q &'U
(75) (
(76) `1
(77) I"@*No ;
(78) #7' 0
(79)
(80) $
(81) # 0
(82) 9(p 0
(83) n
(84) ;' 1nM4
(85) h@?A/BCq > 4 0
(86) 3%M ''UM
(87) )*
(88) X*
(89) r PNT
(90) <*1#7' )* )*
(91) \
(92) 5sd
(93) $"Z
(94) t"a 5 ed/5I /4NT
(95) 4
(96) $
(97) 0 'uh v4
(98) 1 8 :
(99) )3 -
(100) id# &
(101) RNR )
(102) ;
(103)
(104) 0 'Z9B6i
(105) NT
(106) 4 :
(107)
(108) c4M
(109) 1#% 0
(110) h wd
(111) $"Z
(112) :
(113)
(114) L1
(115) r r*NT >
(116) <)K d ''
(117)
(118) c '@ >*=
(119) =' & 5 > Mw 9J;
(120) i
(121) U# NT
(122) d5 '
(123) )t ; 0 @
(124) 0 ' &'
(125) I
(126)
(127) >$\)*4Jd
(128) L*&'
(129) NPh&c
(130)
(131) Q >
(132) Q &'
(133) NTx=
(134) 8 ' > J >
(135) NR ''/Py
(136) *hz t
(137) J*13 "5 )Q
(138) h 5
(139) ')Q NT U )q
(140) 5s
(141) *S 0
(142) M])*9{klX *U -h`
(143) 5 >)*
(144) K *] "J
(145) '
(146) 0
(147) <4
(148) K R 0
(149) $K '';
(150) T > NR e2
(151) ! Y4
(152) 5 0
(153) L
(154) >$r
(155) *Y
(156) 1".'Z|/
(157) $J"Z $ '
(158) `
(159) 1"Z * : UL
(160) n
(161) 'U( ! &'UlM! "
(162)
(163) 3d
(164) $"Z
(165) *9 k%wD F F*GK wD F*F HTa?A-B(C[ )*
(166) c
(167)
(168) SQMP NT
(169) # )qU}z
(170)
(171) 4x :
(172) P 0
(173) [ Y
(174) "Z 'URNL'') ',
(175) >$ 1M1
(176) NofZ ''
(177) 8~4422>4dg : $8
(178)
(179) 8NR )*
(180) z"a N ~d22d9 jP 4MYNR )
(181) IY~d424\ 45 qNT
(182) 5 5 tYNL'U'
(183) Q' # ) )*
(184) P
(185)
(186) &4MX 0 )] V
(187) NTU#u
(188) '1q
(189) >$b
(190) 9. Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. To copy otherwise, to republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. SIGIR’10, July 19–23, 2010, Geneva, Switzerland. Copyright 2010 ACM 978-1-60558-896-4/10/07 ...$10.00.. C
(191) $( "-~4422>4!
(192) `5 e : e*
(193) 0
(194) MLNT'
(195) *x) 0
(196) NR )*
(197) r+ Uw )2 9_;
(198) $w wed : * 0
(199)
(200) I' )* )*
(201) ; : 5P
(202) INR )
(203) : J 5
(204) z|
(205)
(206) $".
(207)
(208) >$)LKNL'U'
(209) ,' )* )*
(210) : `
(211)
(212) 4 ' I)*
(213) *NR '
(214) '9<
(215) T@?A/BC 4
(216) 5 $ 0
(217) T
(218) 5q5 e : L&'
(219) V 5 S KNR 4M[
(220) t K *&'
(221) <"a N ''c ]
(222) : '\ <
(223) : *'
(224) !
(225) 0 ' \
(226) 0
(227) 4 : J
(228) 4
(229)
(230) r >* ]*'
(231) *xP
(232) tNT
(233) tNR )*
(234) Q"a* h(
(235) t)*
(236) K \
(237) : 5 e2
(238) z9WP
(239) '
(240) E[
(241) 5 )*
(242) Y >*b&P ' NR e*
(243)
(244) `
(245) 0 ' >*Q5 eI
(246) )2 ) )I Q * 0
(247) *96
(248) `".4 "z@?A-B(C\D F F*G #%F H : *Q
(249) 5T' )8 'UM65
(250) I
(251) NT
(252) =5 *U* 'z".4= "1M1
(253) NO
(254) ) -9 kl4
(255) 5 *R&4MT
(256) $ : UK
(257) =1M1
(258) N :
(259) 5
(260) TK1# *N'*)J+ '
(261) : 5 :
(262)
(263) 3
(264) : UR@?A/BC\ d". ".
(265) I 'M
(266) 9R~4424r 'P)2 >
(267)
(268) \c"@*N
(269) $ 5q J
(270) U8' )* )*
(271) Ted''h/
(272) J". L & )P t
(273) >$ 5 eS P*NTNT
(274) 4,*P
(275) Uc
(276) >$<
(277) $i
(278) $
(279)
(280) *9=
(281)
(282) !' )*h ;". N "N!'
(283) Ld
(284) $5 *R 5 dh4 0
(285) , ;
(286)
(287) ,". ".
(288) 61MJ " 4
(289) 5 0
(290) (*1#7' )* )*
(291) ,
(292) >$!&
(293) 0 *9 p;L
(294) i
(295)
(296)
(297) QVa?A-B(C{ 0
(298) t&
(299)
(300) V *U 0
(301) P q". Q
(302) +1TNT
(303) t[Ted V "J
(304) 0 ' *]
(305) ) :
(306) < 0
(307) t&
(308)
(309) &'
(310) IRd
(311) I Q
(312) #7
(313) &'
(314) 8*="@*N4
(315) 5 > 0
(316) 8
(317) i
(318) U# NT
(319) 49 2. ICLEF METHODOLOGY. p;KNR >MX) 2 '=". S@?A/BCWD F F*G #%F H : t^ 0
(320) 1P ' )
(321) =
(322) >$T' )I "z
(323)
(324) "a NT)JN!'U')* '
(325) 5
(326) (* C'$e49[ 4Q]@?A-B(CD F*F G #%F*Hr*'@V
(327) "a N : 5 edxRf1gc 'UM
(328) T' )S+ '
(329) J&
(330) Y q '' > )S
(331) $ fu
(332) $"Z 'U! * gJ zh`f7D*gc
(333) i
(334)
(335) Q
(336) I : q4
(337) 5 $ 0
(338) T
(339) id#
(340) NT
(341) 4 : US
(342) cd
(343) $"Z
(344) I 0
(345) K&4MR
(346) ; )2
(347) 9 K/d>@ W Pd Wa 9 > 4R*'ENT
(348) >5 P"a*N¡
(349) R
(350) >$V
(351) ]'*) h("a T
(352) $i NT'
(353) T'4*ed)w". U}z
(354)
(355)
(356) `t
(357) 5S&
(358) 0 3 5)!!'@ ) )
(359) Jed''h (
(360) ' *&
(361) :
(362)
(363) Q
(364) 5K
(365) ( Q
(366) 5T15
(367) )*
(368) 9 p 0
(369) 5 ''-¢*£2¤!&¥l
(370) ,*4&
(371) KI
(372) J'*) 9 ¦ zd> *a§ d¨©6 Zªrz 9« 4<*'@b
(373)
(374) ( : Q
(375) $n L 6
(376) : T
(377) i
(378) NT
(379) 4 : UQ
(380) 4
(381) "Z
(382) *9C (15
(383) *h*
(384) M8*'!
(385) ( ;
(386) $( "
(387) $ : U 0
(388) R'@ ) )
(389) K &'U
(390) L q
(391) : U^ $ 0
(392) R &'U
(393) Y
(394) $5 Y' )* )*
(395) ! zh/&
(396)
(397) J1 dM)K
(398) Q
(399) 5Y' )*h
(400) $M; 'J
(401) ". N &
(402) 0 '*1
(403) *J :
(404) $M;
(405) >$h !4
(406) 0
(407) : h(
(408) *9Ya?A-B(C )2
(409) T 0
(410) ^ 1#
(411)
(412) ' )* &
(413) : '* *
(414) "a*N ¬42 ®¯1°2° d ®±7² 4³*´ ± ³dµ ° ¶ ·2¸2~ °.
(415) 5
(416) : UR
(417) +)8 * >
(418) 3
(419) ) *( QNR )*
(420) 3'1h "a L
(421) i NT'
(422) *h : q
(423) T NTNT*Y
(424) 5^4
(425) ".
(426) 9qp 0
(427) 5 '' ) n
(428) Rt@?A/BC^ K*
(429) Q
(430) i
(431) NT
(432) 4 )Q~d22449 2.1 Flickling.
(433) `~d424>481M1
(434) N : 6
(435) >
(436) Q c
(437) "Z 'U
(438) 5T # ' *r". ;
(439) I
(440) 0 ' Uu9I
(441) L4
(442) 4 : cR # 0
(443) Q t15 >5r&
(444) '
(445) Q4
(446) ".
(447) L : J
(448)
(449)
(450) 4c " 4MQ >' n * 5QJ*1#7' )* )*
(451) 3
(452) 5R 15
(453) *9 C$ 'U%Mw 0 @
(454) w&dM<
(455) Q1M1
(456) N'
(457) zxc
(458) J
(459) )*1# 5 >*q w
(460) 5)S "`' )* )*
(461) Qed''h'4 ' *^ "n
(462) 4
(463) ".
(464) *hdNT ')* ' QNL'') '
(465) 5RNTd
(466) h2 # NR >L
(467) NQ#7&4M#u
(468) NOv4
(469) M<5 '@ >*\". 'UlM4hvd
(470) MP5 1# ' > < 15 d= '' : )T
(471) L
(472) '
(473) $ >
(474) NT 0
(475) ;5 ' ! *J
(476) 6 : h4v4
(477) MJ
(478) $+
(479) NT
(480) 4 15 d( '' : )J
(481) ^
(482) +
(483) w SNTdU"aM[
(484) NTK) )*
(485) 1
(486) s&4MEC'5e4h; 4*'c " )* NT
(487) #7'e2
(488) `".
(489) >
(490) Q 1#7
(491) 5Rv4
(492) 1*
(493) ;fZ' 5
(494) >"a
(495) NR )*
(496) ,". >". '
(497) h R J+ ' v4
(498) 1*
(499) 3' 5
(500) >"a
(501) `
(502) ;
(503) ` K
(504) 5
(505) T". J>¤INR )*
(506) 5g$9(?n1*NT
(507) R' ) # ) )P
(508) 5
(509) \ t$q NT*4J "`
(510) #71M1
(511) Nd
(512) $5 *\# ')Y
(513) i'UR
(514) >"Z '
(515) \ "J
(516) >$
(517) h,
(518) ( + '
(519) h < *1#7
(520) >$rv4
(521) 1 U
(522) ;"a J
(523) 0
(524) MP
(525) >$VfZ 0
(526)
(527) dh ¤ F F v4
(528) 1* U
(529) 5g. a..2R 3 "!$#&%''(*)%''+q ]a -, .//0 .//1 /@ A / 24BDC36E$5-79BD8;FDG :=<>2 ? AH>I0 ? H>0/J J-AKL? HM1 INK ; 8 2 A/ A . <>O P BDFDE S 8=< FDQ O E 8;2 FDCG @-H;A/-? A .-H>I6? A/ R O 248O P>B :MT248;FD2>C2 G 2 I6H4/ ?? .-HA;I1 2436G :;:;82424UV3 248B 242 FD2CG AH4/J0 .J-A 3 FDG 2>36:;:;8;2>29UWS 3 2>8;2>2 2 AAH>/ II @-HM0/@ T <42XF O 24YFDG 8 Q
(530) CG-CBDFDG6E BQ
(531) CNS A ? H>/ ? K ? J-KLHH>@A./ I@ Z 368;P F 8;2 FDG Q B F \]BDFDG6E 3[O B^Q
(532) CNS 8 AKLH>0K . ? @0 I ZQ 368;G P 8;2 BDB _` C3 Q
(533) < C S 3[O G B FD8 CG K .@ OQ G 3[O BDB _` P G BDF <>8 S <>P>O G 2 B O< FDCG 2 .-A@ @ OFDQ E 3[O S 8 FD` O FDC2>G 8 FD<>G P>O ` 2 O< S 2 ? I6A0 A/?/ O 8 8;2>:;P < 2 2 8;:=<>8 3. DISCUSSION.
(534) J5 e : = )2
(535) w = < '
(536) 8)2 NT
(537) *xn
(538) 8NT
(539) JNQ# )*
(540) T"a*h(
(541) S)*
(542) $R \
(543) : R5 e2
(544) 9 c
(545)
(546) )r*
(547) tNR )*
(548) *h6
(549) K*
(550) t q5 >)*
(551) T' )* )
(552) h(L '^&
(553) 0
(554) $Mq5 ''
(555) )*)<5 e 9Y/w 0
(556) K V 0
(557) K'
(558) 0
(559) ' ";U"a# +'U%M4h :
(560) PNT'
(561) NT
(562) 4
(563) ^ r4QNT
(564) 5 NP9EmR 4M^NT
(565) : '1S
(566) 5)h,
(567) <
(568) : t '' :
(569) XVv4UT
(570) w
(571) >$ fZedq<
(572) $i8NR )*
(573) >gJ L er". Q P49<
(574) R+1Ld : ' : M6
(575) (5 >)*
(576) ' )* )*
(577) cfu 8
(578)
(579) "a
(580) n
(581) n
(582) >$L&
(583) NT
(584) NT R c&')* '6 ;*
(585) <tN!'U')* '@g$9J
(586) I
(587) 1J "
(588) !d :
(589) $
(590) !e2
(591) $M : 5=
(592) SK 5 >
(593) I
(594) INR )*
(595) *9;B( $ NR )*
(596) 8".* P
(597) 8D ¤T dhz&,". J
(598) 0
(599) $MP4,
(600) v4
(601) 1
(602) h
(603)
(604) : = !
(605) 'UlMK "6¤I *49kl ''UMt !+ 0
(606) ;NTd
(607) 3NT
(608) 'NTU`
(609) `NR )*
(610) : `
(611) $
(612) h&U '
(613) 1)!
(614) I5q P'NTU5 * : I I 5 '( Y$ )*
(615) r
(616)
(617) 5r&
(618) 0 9 q
(619) J
(620) $
(621) ".
(622) Q
(623)
(624) ST
(625) NT 0
(626) cNT
(627) J
(628) # 1 ,"a*N
(629) ;5 et
(630) $+ U*9. s :
(631) 0
(632)
(633) 6Ja?A-B(Ct,*&
(634) $ 0
(635)
(636) 6
(637) #71M1
(638) N 4
(639) 5 / "
(640) z
(641) U
(642) c,
(643) "a N )*
(644) c5 ednf.
(645) '
(646) $ 4
(647) 5 hNL'
(648) w5 ed5g$9K
(649) Q"a4I JNT 0
(650) "a N *NT )^U}z
(651)
(652) 4K
(653) $t "8*1#7' )* )*
(654) w
(655) >$ 15
(656) Q)RNT
(657) I' 'nba=Bn?fZkl4
(658) 5 $ 0
(659) >g,1%M'
(660) ! "
(661) i
(662) NT
(663) 4Qq)^ ^
(664) "Z 'UK1M1
(665) N fZNT'
(666) >gQ
(667) K "
(668) >$w5 ed=K 0
(669) I RNT
(670) 8
(671) '1Q
(672) )R : $<
(673) i
(674) NT
(675) 4 8
(676) 5L ! 'UM
(677)
(678) #71M1
(679) N{#
(680) 5 *9n
(681) 8 5 L*''
(682) *< , =&
(683)
(684) P 15
(685) K &d¥1
(686)
(687) U
(688) L&4MI > )J) *h*& 'I 0 ' 0
(689)
(690) U)w&d¥1
(691) L*[ V 0 '(& : U^
(692) K N " d&)8I
(693) ;
(694) >$t'*)9(n*NTN!U%MPfu T)2 NT
(695) $# 'e2
(696) >g` 2 $KQ)*
(697)
(698) 5 >)Q
(699) >$P' )*3,
(700) `*
(701) : M <)*
(702)
(703) 5 >
(704) R
(705) *
(706) ! I Y&
(707) K
(708) Y&4Mr
(709)
(710) 5
(711) $L : U 3
(712) J'NT5 >*= S
(713) '/*
(714) 3NT *
(715) :
(716) )Q'*)*`"@*NO*NTNT
(717) $ ' :
(718) &S
(719) 5S
(720) )*
(721) 9 c; :
(722) 0
(723) h '*)*q
(724) R
(725) #71M1
(726) N 4
(727) 5 *V'*)*! # 0
(728) P r
(729) "a',
(730) #7
(731) &'
(732) t
(733) *
(734) P". R1M)r
(735) #71M1
(736) N 4
(737) 5 Q !
(738) >$!&
(739) 0 *h :
(740) 'c
(741) )*
(742)
(743) 'NQ# U5 *6 " 6 * 5-96C 6
(744) i NT'
(745) *h>
(746) '*)
(747) d
(748) $6*'UMI
(749) U+ed : #7U
(750) N
(751) 5!5 e! 8 > 4
(752) i
(753) NT
(754) 4 *'UM : UR J)*'
(755) 3
(756) #%
(757) $+
(758) !
(759) >$T4
(760) "Z
(761) *96k%L
(762) `".
(763) *
(764) =*'TNR )
(765) =)8
(766) ,'*)8+ '
(767) nJ
(768) 5T&
(769) 0 *(". Q
(770) U+ 0
(771) *P "
(772) J~d22>2K4
(773) ".
(774) : UP1M1
(775) NR NTdU+ * >
(776) !* I
(777) &
(778) 0 * NT
(779) !
(780) KQ
(781) 0 '
(782) 0 *`". NT, "
(783) 5< 15
(784) 9. 2.3 Generated Logs. 4. REFERENCES. 2.2 Search Task. p 0
(785) 5 ''Zhd
(786) 3' )*` ''
(787)
(788) K Q
(789) '
(790)
(791) S)J
(792) =@?A/BC D F*F GL KD F*F HI NT )*(*45 RNT
(793) 3 KDJNT''*R'
(794) 9 / &'
(795) ,6NTNR >
(796) z
(797) 6NT*1z
(798) '
(799) 0 4/15 >1/ "& c
(800) 5 ' )*9[
(801) K'*)w+ '
(802) L
(803) 5 0 *Q
(804) #71M1
(805) N¡4
(806) 5 $R `v4
(807)
(808) h*
(809) 'UhdU
(810) NT'5e2
(811) zhd
(812) '
(813)
(814) Rv4
(815) $M!5 1# ' > h-v4
(816) MtNTdU+ *h ".
(817)
(818) & 5et"a N«
(819) c P 0 U# )* * 'd *fZ
(820) *9 )9
(821) id
(822) 0 *z )*
(823) g$9kl= 5 ' ¢2£*¤,
(824) *4&
(825) s[
(826) \' )*w b)*
(827)
(828) 5
(829) hG*D 0 '
(830) >$
(831) \fu \
(832) *s :
(833) E Y
(834) $t' )*KX [
(835) K* rdNL&
(836) $Q ";
(837) 5
(838) 5g$9s
(839) S' )*R 0
(840) S r$[*
(841) P " ". NR >*^". T1 dM)<NL'U')* '(
(842) 5^"a*N <
(843)
(844) $
(845) 0
(846) *9 a?A-B(Co > 4t 'UM
(847) ]
(848) <' )q+ '
(849) K D £ u9IC J
(850) $i NT'
(851) *h K 0
(852) $8 c'
(853) # 0 : M )qV & )V q
(854) 5X5 e h3 0
(855) 1)2 )q
(856) <
(857) }z
(858) $t " ' )* )
(859) Sed''Q V
(860) 5V&
(861) 0 *h6 &
(862) 0 )<
(863) t : U5# )Y&
(864) 0 *T "c
(865) T&
(866) :
(867)
(868) ]' )* )*
(869) : UE \
(870) >$
(871) -h 0
(872) 1)2 >) :
(873) T
(874)
(875) L5 ' > T
(876) NT
(877) J~d424>4K$ >MS : dM4h t
(878) c
(879) }z
(880) , "6 N!&U# ) *3
(881) >$S
(882) $NT*P
(883) 5S
(884) 'U3 t
(885) ,&
(886) 0 *9. U8
(887) *heI9hm,'
(888) h*f9hg;*y 'hf9h*h >e2
(889) hB,9h Aj*i
(890) y$#1p;1
(891)
(892) h Cn9-f7D F F*H2g`C'$eA)x( LN!'U')* '
(893) 5Pd
(894) $"Z
(895) 8"a =C'$e4hklkY ed) ;l
(896) ,"a ,
(897) ?A-B(C]D F F*GmY ed -9 Dn;g y 'h*f 9h ?n'*) -h9 k8o >')
(898) h*f 9-f7D F F*H2g$h p 0
(899) 0
(900) : "@?A/BC6D F F*Gxqp
(901) >$SA- )Tm= 'UM`"a jS'U') '/klNR )*
(902) j3 a
(903)
(904) 0 'Zhklt64
(905)
(906) ) = "6H ed S "
(907) I?( 1#lA- )* )*
(908) IB 0 ' *SC N Y f7?A-B(CX F G2g$hrdp
(909)
(910) N!&
(911) ;> #HRD F*F Gh ArJ l ?qt p ¤- F h-9 D D- #1D £2¤49 £Nn;g y 'h*f 9h
(912) h!e 9h ?n'*) -h9 k8o >')
(913) hf9 f7D F*F H2g3p 0
(914) 0
(915) : "@?A-B(C]D F F*HxnBi' )p
(916) >$ (h
(917) 0 *3P QjS'U')* 'C 'e N!MKB6 0 U*NT
(918) 4h k%kY ed)m=l
(919) `"a ,
(920) 8?A-B(C]D F F*HmY ed -9.
(921)
Related documents
The most important requirement found for the time view is that it needs to give a good overview of the project and its process while simultaneously enabling the user to show
The basic idea behind our multichannel approach is to design a filter where the output signal has distinct peaks corresponding to the time instants where the ECG QRS complexes
This section outlines the set up of the experiment that is designed to evaluate how different machine learning algorithms tackle the multiclass classification problem present in
Our results also showed that, if the relationship is linear, log-transformation, which is the most commonly used method for regression on log-normal data, leads
For linear regression with a log-normal response, the suggested maximum likelihood method ML LN can be used to obtain estimates of the absolute effects, for both independent
Ecological action space concerns the interrelatedness between individuals for example concerning household division of labor and who should become knowledgeable and keep up to date
The present thesis is a qualitative study with 28 Swedish households that concern how the householders express responsibility for the en- vironment through their everyday
The following videos illustrate the cone (in 3D, and the partially cone-like shape in higher dimensional cases) generated by scaled channel vectors of N channels.. The shape is