Committee |
Date Time |
Place |
Paper Title / Authors |
Abstract |
Paper # |
SS, DC |
2023-10-12 11:05 |
Nagano |
(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 pp.44-49 |
SS |
2022-03-07 15:40 |
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 pp.54-59 |
RCS, SR, SRW (Joint) |
2021-03-04 11:35 |
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 12:40 |
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 pp.97-102 |
MSS, SS |
2019-01-16 13:05 |
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 pp.103-108 |
SS, DC |
2017-10-19 14:15 |
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 pp.13-18 |
SS |
2016-03-10 13:00 |
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 pp.37-42 |
SS |
2016-03-10 13:25 |
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 pp.43-48 |
ICSS, IPSJ-SPT |
2016-03-03 16:30 |
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 pp.41-46 |
IN |
2015-10-15 15:55 |
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 pp.19-24 |
SS |
2014-10-24 09:30 |
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 pp.23-28 |
SS |
2013-01-10 13:00 |
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 pp.1-6 |
SS |
2012-03-14 09:00 |
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 pp.109-114 |
SS |
2012-03-14 09:25 |
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] |
SS2011-76 pp.115-120 |
SS |
2010-12-15 09:00 |
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 pp.49-54 |
DE |
2007-07-02 15:45 |
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 pp.103-108 |
DE |
2007-07-02 16:10 |
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 pp.109-114 |
DE |
2006-07-12 14:45 |
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 pp.151-156 |
DE, DC |
2004-10-19 14:00 |
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 pp.25-30 |