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 Conference Papers (Available on Advance Programs)  (Sort by: Date Descending)
 Results 1 - 19 of 19  /   
Committee Date Time Place Paper Title / Authors Abstract Paper #
SS, DC 2023-10-12
(Primary: On-site, Secondary: Online)
Consistency checking of bidirectional transformations corresponding to selection and projection operations under functional dependencies
Jun Ishida, Sota Sakai, Yasunori Ishihara (Nanzan University) SS2023-29 DC2023-35
A bidirectional transformation framework called BIRDS for relational data sharing can check whether every pair of source... [more] SS2023-29 DC2023-35
SS 2022-03-07
Online Online An algorithm for determining the existence of weakly appropriate data publishing policies in the relational data exchange framework
Seiya Aizaki, Yasunori Ishihara (Nanzan Univ.) SS2021-51
In the relational data exchange framework, we consider a situation where data are exchanged by not only the source and t... [more] SS2021-51
Online Online [Poster Presentation] Development of a Baseball Sign Transmission System Using Electronic Communication Devices
Shinichi Motomura, Yamato Maekawa, Yasunori Ishihara (Nanzan Univ.) RCS2020-241 SR2020-80 SRW2020-70
In recent years, the introduction and utilization of electronic communication devices in the sports world has been remar... [more] RCS2020-241 SR2020-80 SRW2020-70
pp.173-174(RCS), pp.66-67(SR), pp.61-62(SRW)
MSS, SS 2019-01-16
Okinawa   Efficient XQuery evaluation on compressed XML documents
Jukiya Ogura (Osaka Univ.), Yasunori Ishihara (Nanzan Univ.), Toru Fujiwara (Osaka Univ.) MSS2018-72 SS2018-43
 [more] MSS2018-72 SS2018-43
MSS, SS 2019-01-16
Okinawa   Data publishing based on query resolution in the data exchange framework
Keiji Fukushima (Osaka Univ.), Yasunori Ishihara (Nanzan Univ.), Toru Fujiwara (Osaka Univ.) MSS2018-73 SS2018-44
With the spread of big data such as medical information, techniques on data exchange that allows data to be exchanged in... [more] MSS2018-73 SS2018-44
SS, DC 2017-10-19
Kochi Kochi City Culture-plaza CUL-PORT A Transformation Method of XQuery Expressions for Evaluation on Compressed XML Documents
Jukiya Ogura, Yasunori Ishihara, Toru Fujiwara (Osaka Univ.) SS2017-23 DC2017-22
While XML documents can easily express data structure, there is a disadvantage that the document size becomes large. For... [more] SS2017-23 DC2017-22
SS 2016-03-10
Okinawa   XQuery Type Inference under Restricted DTDs
Kenji Sugimura, Yasunori Ishihara (Osaka Univ.), Kato Hiroyuki (NII), Fujiwara Toru (Osaka Univ.) SS2015-82
XQuery type inference is an important problem that is useful for query optimization. Howerver, precise type inference fo... [more] SS2015-82
SS 2016-03-10
Okinawa   XQuery optimization by avoiding node sorting and duplicate elimination
Yasunori Ishihara (Osaka Univ.), Hiroyuki Kato (NII), Torsten Grust (Universitaet Tuebingen) SS2015-83
During evaluation of XQuery expressions, node sorting of input XML documents and duplicate elimination are often perform... [more] SS2015-83
ICSS, IPSJ-SPT 2016-03-03
Kyoto Academic Center for Computing and Media Studies, Kyoto University Privacy-preserving Log Analysis with Deterministic Encryption
Yuji Furuta, Naoto Yanai (Osaka Univ.), Masashi Karasaki (NTT-neomeit), Katsuhiko Eguchi (NTT Neomeit), Yasunori Ishihara, Toru Fujiwara (Osaka Univ.) ICSS2015-54
Recently, an increase of attacks via a network is remarkable, and the observation and the analysis of log information is... [more] ICSS2015-54
IN 2015-10-15
Osaka Osaka University [Invited Talk] Data Secrecy in the Cloud Era
Yasunori Ishihara (Osaka Univ.) IN2015-56
In the Cloud Era, third parties are required to process data without knowing the content of the data. In this talk, we f... [more] IN2015-56
SS 2014-10-24
Kochi Kochi city culture-plaza cul-port A polynomial time algorithm for determining type behavior equivalence of XPath queries under the XML schema
Tsukasa Futagami, Yasunori Ishihara, Toru Fujiwara (Osaka Univ) SS2014-29
 [more] SS2014-29
SS 2013-01-10
Okinawa   The validity problem of positive XPath queries with sibling axes in the presence of DTDs
Yohei Kusunoki (Osaka Univ.), Kenji Hashimoto (NAIST), Yasunori Ishihara, Toru Fujiwara (Osaka Univ.)
In this paper, we discuss the complexity of the validity for positive XPath queries under the presence of DTDs. A given ... [more] SS2012-46
SS 2012-03-14
Okinawa Tenbusu-Naha Decidability of Query Preservation for Deterministic Linear Top-Down Tree Transducers
Ryuta Sawada (Osaka Univ.), Kenji Hashimoto (NAIST), Yasunori Ishihara, Toru Fujiwara (Osaka Univ.) SS2011-75
When updating an XML schema, it is desirable that the new schema preserve the expressive power of the old one. The query... [more] SS2011-75
SS 2012-03-14
Okinawa Tenbusu-Naha Combining the tractability of duplicate-free DTDs and disjunction-capsuled DTDs for XPath satisfiability with sibling axes
Yasunori Ishihara (Osaka Univ.), Shogo Shimizu (AIIT), Kenji Hashimoto (NAIST), Toru Fujiwara (Osaka Univ.) SS2011-76
This paper demonstrates a new subclass of DTDs,
called DC/DF-DTDs, under which XPath
satisfiability with child, descen... [more]
SS 2010-12-15
Gunma Ikaho-Onsen Hotel Tenbo The Validity Problem of Positive XPath Queries in the Presence of DTDs
Kenji Hashimoto (NAIST), Yasunori Ishihara, Toru Fujiwara (Osaka Univ.) SS2010-47
We discuss the validity problem for positive XPath queries in the presence of DTDs. A given query $p$ is valid under a D... [more] SS2010-47
DE 2007-07-02
Miyagi Akiu hot springs (Sendai) Generating XML document transformers according to XML schema evolution based on the tree-embedding relation
Masaki Yoshida, Kenji Hashimoto, Yasunori Ishihara, Toru Fujiwara (Osaka Univ.) DE2007-39
Given an update operation sequence for schema evolution based on the tree-embedding relation, the method of generating X... [more] DE2007-39
DE 2007-07-02
Miyagi Akiu hot springs (Sendai) Translating XPath queries according to XML schema evolution based on the tree-embedding relation
Takuji Morimoto, Kenji Hashimoto, Yasunori Ishihara, Toru Fujiwara (Osaka Univ.) DE2007-40
A method is proposed for translating queries in a subclass of XPath according to XML schema evolution based on the tree-... [more] DE2007-40
DE 2006-07-12
Niigata HOTEL SENKEI Security Verification against Attacks using Type Inference on XML Databases
Fumikazu Takasuka, Kenji Hashimoto, Yasunori Ishihara, Toru Fujiwara (Osaka Univ.)
Inference attacks mean that an attacker tries to infer the execution result of a query unauthorized to the attacker (i.e... [more] DE2006-47
DE, DC 2004-10-19
Tokyo Tokyo Institute of Technology Schema update operations preserving the expressive power in XML databases
Kenji Hashimoto, Yasunori Ishihara, Toru Fujiwara (Osaka Univ.)
This paper proposes schema update operations preserving the expressive power in XML databases. In this paper, the inform... [more] DE2004-118 DC2004-33
 Results 1 - 19 of 19  /   
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