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表 2．ゼロヒットの割合]^o OPAC I 60* {ºDæEG@C/V"¸

ゼロヒットの割合

ゼロヒット
件数

全て

28%

5,577

0U"üú²ÊHR"

書名・誌名中の語

26%

51,853³Ð¨Im$f®ÍJË¦:WE.UXW!7

正確な書名・誌名

4%

1,403

I»

著者名

32%

10,441

出版社

28%

237

件名

14%

1,368

分類18%95

全検索

26%

111,091

G3ER¾·DJ"³Ð0UI¨öE9C³
ûG|ÓB5Zù.UXC,WE,.W9'!~ò"I,3A0Iüú²×£

10'%12'"÷ÐEGWIJö%IÚÊE"üúÊEI`qipD+W!

6!KOSMOS II$&'-/.
±¥Hõ1 OPAC DFIÛÞªú8XC,W

検索項目

I0ZÒW>Q"KOSMOS II IksxcadrxvbIîÃÖ1Z@>!×£Î¹E9>IJ 2004
å 10 I 1 yIvbD" Æ 423,804 D+W!

¨Dnik1G0@>RII

&gvnikë 1J³G¨öIüú¿EÆ¨¿HÅQWý'Zë 2H­9>!gvnikI¿JÆÍD

111,091 &È¨¿I 26*'D+@>1"7XHéZ­9>RID+W!G/"7I¿HJ5Y<¨I¿JQC,G,!

LC(õ)IgvnikýJ 14* EÙ0@>!7

ë 10Uî0WT-H"½I KOSMOS II D"

XJõüúI 75* 1txa+W,J¨¨

õ#î"J+OVüú8XC,G,!õIüúýZªú9C,W>QD+WE.UXW!

JÈ¨¿I 2.1*"î"J 0.1* D+W!7I
0U"Ì3I³Ð¨Jh\ku_$w$l&(·7!/.+%(*)

õ#¬õÕI)+W,J(ÆC)'0UYXC,âóDJREREõö%1í9C/U;"OWEPUXW!_$w$l0UI¨HJØ¶"Ñ>¤DJ]^oIüú1 OPAC IüúHR¶1,3A0+W!Ñ¶I-?"÷ÐEGWIJjZN9C,WE,-7ER+V15'"üú²1ßÀ

_ekHOXCJ,W1"h\kuHë8XG

Z}°9C"OPAC H¨Zã!:WE,-½,¼ñ1¨D2G,7E"O>ðÜGtxa1

JTV.H3,RIEG@C,W!7-9>Õ"ä:W7ED+W !#.K Gerhan&1989'J"

2003 å 7 Hçë8X>"Bates HTW LC I[ah\ku_$w$lIP0UI¨DJö%ÕIÆ

drxpsxHÎ:Wñ¡·H/,C"ö%§Á²

CI$¾·I 55* 90¨D2G0@>EµL

DJG3"üú²1¨Hüú9>&Z´QC¯

C,W !

·Z§Á9"=I&E³Ð¨&õ'Ztx

13'14'

表 1. 主な検索項目の利用件数と全検索数に占める割合（2004年 10月）

aì5:W7EDüú²ZÂ9,¨Hà7-E,-Úz1G8XC,WÖ2!

検索数全検索数に占める割合

全て20,146

4.8%

書名・誌名中の語

200,337

47.3%

IJá9,E«YXW1"½D.UXWõI

正確な書名・誌名

38,6299.1%

üúHA,C 3 ÝMF+6C/3!

著者名32,555

7.7%

検索項目

8!'-&/.,
Bates IÚz:WT-G©ÇPZ:4H±:W

1 ÝöJ"NII 1Ú9C,Wï¢

¾·õ

出版社

842

0.2%

êöë&LCSH' IôøèZªú:W7ED+W!

件名

9,107

2.1%

óõêöë&BSH'"¢þ¢

分類

512

0.1%

&NDLSH'EéLC"ßÀIÄÎÿZÉS:7E1

423,804

100.0%

æHGWÖ4ID"E9C¨EI~Ôý1

全検索Ö3¾·õêöë41

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EHGBD0UFÞMD0U17,!\oJ(_H

Hfa>U:FE"faÙ5Ê0C0A²4S­ÄÝdç5UPIEJG7"@&ã<?CÂSVUP

<DP"«X5K`;VD0G0èºRTPvmp

IE/U!>8H]iCPIP/U5"*/HühJçä>UJ?E/U!

9D07:FE´XF>UR1HGUPIP/

2 3\J"«XX?Ò/G­ÄHÆa>U:FE

U!«XK`P@ICE/W1!

/U!:VHRT"Zc/GÚ#­ÄX×°>U:

OPAC E"NA OPAC HCG5UùDIo'k

F5E6U!:Ièº"¿àJN?Ê0C0A²Ez'hE"5ÈêS¯E"Ú#4SZc/HPVG­Ä<"­ÄªI'4S0ôGd'qXöK"

7­ÄE6U:F!:V59ï²HRBD×°;V@IáÎo'kHK`;VA«XIbXbm

UVdE/U!

b>U:FHGU!
3 3\J"y]gc­ÄIfaE/U!KOS-*)+(MOS IIEJÄ²eF01©E"y]gc­1, íáêStqymbQÛ#)5#
êS­Ä*#ÄX-¥<D0U+í 1Åå,!:I­ÄIf3J«

íáêStqymb#" 2 G#8¤"ø"1999"

X5Ð÷ªºI9ï²E/U:F4SòNVUPI

p. 535-648.

E/U!ÚJ\F@VHü7À\EÝdç5BD02, T»"Øâ="ÉR4W#áÎêSIJßF OPAC(U«XXe>U:FHRBD"faÙJÓMEJ

1980 Cÿ¹I:µFF2#íá#vol. 45, No. 1,

Ê0C4G4BAÚ#Iý7IYXBÔ<"ÓMH

1993. p. 123-141.

FBDIbGÏkXöKÝ>:F5EHGUF·2SVU !
16,3, NlUgÈ#smp'b­ÄÑÿH39Ua''qI]#íá#vol. 45, no. 2, 1998, p. 222-227.
4, ¡4¬#Ú#­ÄF OPAC(Çá.IòLI\ofa)¾4S#íáCS#vol.40+2,, 1994, p.71-84.
5, Drabenstott, K. M. Online catalog user needs and behavior: Think tank on the present and future of the online catalog: Proceedings, Chicago, American Library
Association, 1991#RASD Occasional Papers, no. 9.
6, Larson, Ray R. The decline of subject searching: longterm trends and patterns of index use in an online catalog. JASIS. vol. 42+3,, 1991, p. 197-215.
7, n[&D#u'l}¼Á1£xY\% @IÍOFEð#_pZ]^Zsh#no. 280, 2004, p. 2-3.
8, 6qj¶#j{n[mb]^yFíá#_pZ]^Zsh#no. 281, 2004, p. 9-12.
9, 3,F;=10, ½õ^È#³iíáH39U OPAC I<A% 8¤7î

図 1. KOSMOSI
I索引語一覧の検索例

O§i'íáIfaoIMóX+<D#°ÿIíá#vol. 28, no. 2, 1990, p. 66-75.
11, -Ú#êSIúëF'e'$\k'x^\h.®

9!$'&%
P¼

íáI\oñÃ$ËÖ*I Tillet J\oIÂ¦I,¨/"@é/GLMIý75
;V"_k¢H#faÙI­Ä¸:FÚ#êS% ¼i¼íáH39U OPAC |rk')¾X'ìH#íá®¢f'i#32, 1992, p. 179-269.

`'JRT%/GÌ3XIbF>U²

12, Õ±>×#!íáH39U OPAC IfaÙI$Ä¸

pI9ïQÚ#K`"MmÂ¦HÜÐ>U:F5:% òXþæF<A\kw~')¾#Library and42

MediaNet No.12!2005.10"

Information Science#vol. 37, 1998, p. 35-53.
13) Dubois, C. P. R. Free text versus controlled vocabulary:=QSW^=@kºIyÒ58C@<"ÐÏ@g£DÉª¸IËE.?6G3=A<0>,/"ÐÏ@a reassessment. Online Review# vol. 11, no. 10, 1987,ÌÒpµ=7@o?9,;@>p. 243-253.

HG!

14) Gerhan, David R. LCSH in vivo: subject searching per-Ç/¼E2) [KVc\&Y?v5;A"fl?51q4H;,

formance and strategy in the OPAC era. Journal of Aca-G!

demic Librarianship. vol. 15, 1989, p. 83-89.

~{#Ä?BG*¢5,£wÌÒ+=7@n½15) " h«Î# ±x­t¨@·£w$

Ç°»@Â©#Çtr|­r¾ÁÓÃ#2005, p. 37-40.

¥% [KVc\&YI²¡?# ¬@£w#vol. 41, no.
4, 2003, p. 222-230#
3) LCSH ?9,;A"fl?51q4H;,G!

16) Mann, Thomas. Why LC Subject Headings are more im-

¹B:0#LCSH =_TX&T'À¶¯SM&]portant than ever. American Libraries. vol . 34, no . 9,@kÏ/g£6GC@#­t£w|#no. 71, 2004,2003, p. 52-54.

p. 1-10#17) ÅmÆ#XRTbu}?-2GÌÒ¦% Z&Za$

4) sÊÀÌÁ@¢¿=¤Afl@´F!

B$WJcUYÄzr£wÌÒ§$i³jLCSH%® 28 ¿(2005)"ÀÌ¤Í 28 ÈrÇ#Ñr£wÇ#no. 496, 2002, p. 20-25.

NDLSH%® 5 ¿(1991)"ÀÌ¤ 17,133 BSH%® 4 ¿(1999)"ÀÌ¤ 7,847 #1) YaePNQ`edO=A"LeaKeÌÒ<@ÐÏ43