Mandatory, A

ID	Average precision	R-Precision	MODE	TOPIC-LANG	TOPIG-TAG	TARGET-CORPUS	TRAINING-CORPUS	INDEX-UNIT	INDEXING	INDEX-STRUCTURE	QUERY-UNIT	SEARCH-MODE	RANKIG-FACTOR	QUERY-EXPANSION	TRANSLATION
LAPIN4[result,desc]	0.2794	0.2910	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	irex	character n-gram	normalization of token form	inverted file	word	probabilistic model	tf + document length + term weight	pseudo feedback	none
LAPIN3[result,desc]	0.2701	0.2862	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	irex	character n-gram	normalization of token form	inverted file	word	probabilistic model	tf + document length + term weight	pseudo feedback	none
LAPIN5[result,desc]	0.2688	0.2894	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99		character n-gram	normalization of token form	inverted file	word	probabilistic model	tf + document length + term weight	pseudo feedback	none
LAPIN2[result,desc]	0.2637	0.2691	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	irex	character n-gram	normalization of token form	inverted file	word	probabilistic model	tf + document length + term weight	pseudo feedback	none
DTEC1[result,desc]	0.2144	0.2343	manual	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word	morphological analysis	inverted file	word	vector space model	tf/idf + document length normalization	none	none
DTEC2[result,desc]	0.1892	0.2140	manual	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word	morphological analysis	inverted file	word	vector space model	tf/idf + document length normalization	none	none
DOVE4[result,desc]	0.1878	0.2084	manual	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word	morphological analysis	inverted file	word	vector space model	SMART	none	none
DTEC3[result,desc]	0.1874	0.2134	manual	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word	morphological analysis	inverted file	word	vector space model	tf/idf + document length normalization	none	none
DTEC4[result,desc]	0.1627	0.1891	manual	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word	morphological analysis	inverted file	word	vector space model	tf/idf + document length normalization	none	none
DOVE1[result,desc]	0.1609	0.1821	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word	morphological analysis	inverted file	word	vector space model	SMART	none	none
brklypat1[result,desc]	0.1547	0.1748	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99		bi-character	character analysis	inverted file	bi-character	probabilistic model	tf,dl,ql,cl	none	none
daikyo[result,desc]	0.1543	0.1880	manual	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	ntcir2	n-gram	n-gram	inverted n-gram	word	probabilistic model	tf/idf + document normalization + word weight	sinonymy	none
SRGDU5[result,desc]	0.1005	0.1377	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99		word	longest matching with a dictionary	inverted file	word	vector space model	tf/idf + cosine measure	psudo feedback, Rocchio method	none
SRGDU3[result,desc]	0.0980	0.1194	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99		word	longest matching with a dictionary	inverted file	word	Okapi	tf + idf + dl	none	none
DTEC5[result,desc]	0.0959	0.1293	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word	morphological analysis	inverted file	word	vector space model	tf/idf + document length normalization	none	none
SRGDU1[result,desc]	0.0955	0.1165	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99		word	longest matching with a dictionary	inverted file	word	Okapi	tf + idf + dl	pseudo feedback, original method using Taylor expansion	none
IFLAB6[result,desc]	0.0762	0.1108	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word-based bigram	morphological analysis	inverted file	word-based bigram	Probabilistic model	Okapi	none	none
IFLAB5[result,desc]	0.0682	0.0985	auto	JA	ARTICLE SUPPLEMENT	kkh98 kkh99	none	word	morphological analysis	inverted file	word	Probabilistic model	Okapi	none	none
brklypat3[result,desc]	0.0607	0.0779	auto	EN	ARTICLE SUPPLEMENT	kkh98 kkh99	paj1995j.txt paj1996j.txt paj1997j.txt paj1995e.txt paj1996e.txt paj1997e.txt	bi-character	character analysis	inverted file	words in English queries, but bi-character in translated Japanese queryies.	probabilistic model	tf,dl,ql,cl	none	corpus-based
sics1[result,desc]	0.0001	0.0008	manual	EN	ARTICLE SUPPLEMENT	kkh98 kkh99	paj95 paj96 paj97	word	morphological analysis	standard inquery	word	vector space model	standard inquery	gsmd	gsmd