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Supporting temporal text-containment queries in temporal document databases

Kjetil Nørvåg
2004 Data & Knowledge Engineering  
In temporal document databases and temporal XML databases, temporal text-containment queries are a potential performance bottleneck.  ...  In this paper we describe how to manage documents and index structures in such databases in a way that makes temporal textcontainment querying feasible.  ...  The main part was done when the author visited Athens University of Economics and Business in 2002, supported by grant #145196/432 from the Norwegian Research Council.  ... 
doi:10.1016/j.datak.2003.08.006 fatcat:r3fvfsyjxrf2fkkej3jyak2ikm

Space-Efficient Support for Temporal Text Indexing in a Document Archive Context [chapter]

Kjetil Nørvåg
2003 Lecture Notes in Computer Science  
Support for temporal text-containment queries (query for all versions of documents that contained one or more particular words at a particular time t) is of interest in a number of contexts, including  ...  In the V2 temporal document database system we employed a combination of full-text indexes and variants of time indexes to perform efficient textcontainment queries.  ...  Temporal text-containment queries in the V2 prototype Several approaches for text-containment queries are supported by V2 [8] .  ... 
doi:10.1007/978-3-540-45175-4_46 fatcat:zviproqgyrcxzbg4enmtdaczyy

The design, implementation, and performance of the V2 temporal document database system

Kjetil Nørvåg
2004 Information and Software Technology  
In this paper, we describe describe the architecture and the implementation of V2, a temporal document database system that supports storage, retrieval, and querying of temporal documents.  ...  This is of interest in a number of application, both temporal document databases as well as web archiving systems and temporal XML warehouses.  ...  The main part was done when the author visited Athens University of Economics and Business in 2002, supported by grant #145196/432 from the Norwegian Research Council.  ... 
doi:10.1016/j.infsof.2003.10.006 fatcat:l6zfhnqc2va63obzs72753oqpq

TeXOR: Temporal XML Database on an Object-Relational Database System [chapter]

Kjetil Nørvåg, Marit Limstrand, Lene Myklebust
2004 Lecture Notes in Computer Science  
We describe the TXSQL query language used in TeXOR for querying temporal XML documents stored in the system, discuss storage alternatives for XML documents in such a system, and some details about the  ...  In this paper, we describe TeXOR, a temporal XML database system built on top of an object-relational database system.  ...  We would also like to thank Gregory Cobena for providing us with temporal XML testdata.  ... 
doi:10.1007/978-3-540-39866-0_50 fatcat:tl4fk5j6gjetpkksfjlewu4df4

Improving Space-Efficiency in Temporal Text-Indexing [chapter]

Kjetil Nørvåg, Albert Overskeid Nybø
2005 Lecture Notes in Computer Science  
Support for temporal text-containment queries is of interest in a number of contexts. In previous papers we have presented two approaches to temporal text-indexing, the V2X and ITTX indexes.  ...  We then perform a study of the space usage of the indexing approaches based on both analytical models and results from indexing temporal text collections.  ...  Discussion and Conclusions Support for temporal text-containment queries is of interest in a number of contexts, both temporal document databases and temporal XML databases [6] .  ... 
doi:10.1007/11408079_72 fatcat:36k5pjczz5cujgxokcznrynhom

TimeTrails

Jannik Strötgen, Michael Gertz
2010 Proceedings of the VLDB Endowment  
In this demonstration, we present TimeTrails, a system for the extraction, querying, storage, and exploration of spatiotemporal information embedded in text documents.  ...  The user can query a document collection, and TimeTrails visualizes the spatio-temporal information extracted from relevant documents as document trajectories, resulting in a map-based view of documents  ...  Having the spatio-temporal information from documents readily available in a database system provides us with effective means to support various visualization, query, and exploration scenarios for document  ... 
doi:10.14778/1920841.1921041 fatcat:oul2j545uffevgqwl2awter2au

A temporal data model and management system for normative texts in XML format

Fabio Grandi, Federica Mandreoli, Paolo Tiberio, Marco Bergonzini
2003 Proceedings of the fifth ACM international workshop on Web information and data management - WIDM '03  
In this paper, we present the results of an on-going research activity concerning the temporal management of normative texts in XML format.  ...  In particular, four temporal dimensions (publication, validity, efficacy and transaction times) are used to correctly represent the evolution of norms in time and their resulting versioning.  ...  In particular, many efforts have been devoted to add time support to database models and system functionalities.  ... 
doi:10.1145/956704.956706 fatcat:kqfy3kqyyfhvtkysmszcw6sb5y

A temporal data model and management system for normative texts in XML format

Fabio Grandi, Federica Mandreoli, Paolo Tiberio, Marco Bergonzini
2003 Proceedings of the fifth ACM international workshop on Web information and data management - WIDM '03  
In this paper, we present the results of an on-going research activity concerning the temporal management of normative texts in XML format.  ...  In particular, four temporal dimensions (publication, validity, efficacy and transaction times) are used to correctly represent the evolution of norms in time and their resulting versioning.  ...  In particular, many efforts have been devoted to add time support to database models and system functionalities.  ... 
doi:10.1145/956699.956706 dblp:conf/widm/GrandiMTB03 fatcat:kzdik7uwcjfmnpc7osondp3x5m

A Comparison of XML-Based Temporal Models [chapter]

Khadija Abied Ali, Jaroslav Pokorný
2009 Lecture Notes in Computer Science  
This paper describes a number of temporal XML data models and provides their comparison according to the following properties: time dimension (valid time, transaction time), support of temporal elements  ...  Much research work has recently focused on the problem of representing historical information in XML.  ...  The research was in part supported by grant 1ET100300419 of the Information Society Program -Thematic Program II of the National Research Program of the Czech Republic.  ... 
doi:10.1007/978-3-642-01350-8_31 fatcat:wut5bhk7szfgvbc7xqc6ebkr24

Temporal modelling and management of normative documents in XML format

Fabio Grandi, Federica Mandreoli, Paolo Tiberio
2005 Data & Knowledge Engineering  
In this paper, we present the results of a research project concerning the temporal management of normative texts in XML format.  ...  In particular, four temporal dimensions (publication, validity, efficacy and transaction times) are used to correctly represent the evolution of norms in time and their resulting versioning.  ...  The temporal support concerns the valid time dimension and three kinds of temporal queries are considered: current, sequenced, and representational.  ... 
doi:10.1016/j.datak.2004.11.002 fatcat:6nqy4t7krvhg5kjnjljkno4rly

Personalized Access to Multi-version Norm Texts in an eGovernment Scenario [chapter]

Fabio Grandi, Federica Mandreoli, Riccardo Martoglia, Enrico Ronchetti, Maria Rita Scalas, Paolo Tiberio
2005 Lecture Notes in Computer Science  
In particular we defined a multi-version XML data model supporting both temporal versioning -essential in normative systemsand semantic versioning.  ...  In this paper, we present some results of an ongoing research involving the design and implementation, in an eGovernment scenario, of a multi-version repository of norm texts supporting efficient and personalized  ...  In particular, we defined efficient techniques for querying repositories storing legal documents supporting temporal and semantic versioning.  ... 
doi:10.1007/11545156_27 fatcat:emvjfyjykfbo3bmvsrttfepck4

Algorithms for Temporal Query Operators in XML Databases [chapter]

Kjetil Nørvåg
2002 Lecture Notes in Computer Science  
In this paper we describe the new query operators needed in order to support an XML query language which supports temporal operations.  ...  This can be supported by extending the system with temporal database features.  ...  Temporal support in an XML query language implies that new operators are needed in the query processing, and we have identified operators that will be useful in order to support typical queries in temporal  ... 
doi:10.1007/3-540-36128-6_10 fatcat:xo5fjehadzas3kxlhrcbsiptzu

Efficient Management of Multi-version XML Documents for e-Government Applications [chapter]

Federica Mandreoli, Riccardo Martoglia, Fabio Grandi, Maria Rita Scalas
2007 Lecture Notes in Business Information Processing  
This paper describes our research activities in developing efficient systems for the management of multiversion XML documents in an e-Government scenario.  ...  In the first system developed, four temporal dimensions (publication, validity, efficacy and transaction times) were used to represent the evolution of norms in time and their resulting versioning and  ...  All the queries require structural support (St constraint); types Q1 and Q2 also involve textual searches by keywords (Tx constraint), with different selectivities; type Q3 contains temporal conditions  ... 
doi:10.1007/978-3-540-74063-6_22 fatcat:d67c66l53bfrtmiojid47ekqyq

Granularity reduction in temporal document databases

Kjetil Nørvåg
2006 Information Systems  
With rapidly decreasing storage costs, temporal document databases are now a viable solution in many contexts.  ...  Three of the strategies have been implemented in the V2 temporal document database system, and in this context we discuss the cost of applying the strategies.  ...  Acknowledgments This work was done when the author visited Athens University of Economics and Business in 2002, and Aalborg University in 2003, supported by grant #145196/432 from the Norwegian Research  ... 
doi:10.1016/j.is.2004.10.002 fatcat:wawm6wd5kzbefmdsao4xehssne

DyST: Dynamic and Scalable Temporal Text Indexing

K. Norvag, A.O. N. Nybo
2006 Thirteenth International Symposium on Temporal Representation and Reasoning (TIME'06)  
In order to provide efficient support for temporal textcontainment queries (query for all versions of documents that contained one or more particular words at a particular time) temporal text-indexes are  ...  In this paper we present DyST, a dynamic and scalable temporal text index.  ...  text-containment queries (query for all versions of documents that contained one or more particular words at a particular time) temporal text-indexes are needed.  ... 
doi:10.1109/time.2006.12 dblp:conf/time/NorvagN06 fatcat:2lka2htlpjbk3ovpgmsnev6ilq
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