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Managing structured queries in probabilistic XML retrieval systems

Luis M. de Campos, Juan M. Fernández-Luna, Juan F. Huete, Carlos Martín-Dancausa
2010 Information Processing & Management  
Focusing on the context of XML retrieval, in this paper we propose a general methodology for managing structured queries (involving both content and structure) within any given structured probabilistic  ...  information retrieval system which is able to compute posterior probabilities of relevance for structural components given a non-structured query (involving only query terms but not structural restrictions  ...  the structural conditions specified in the about clause and in the path). 4 Fig. 4 shows the modules required for a probabilistic retrieval system in order to deal with structured queries.  ... 
doi:10.1016/j.ipm.2009.11.006 fatcat:kevg5i6j5vhldnnafi6u6qbulm

Modelling Vague Content and Structure Querying in XML Retrieval with a Probabilistic Object-Relational Framework [chapter]

Mounia Lalmas, Thomas Rölleke
2004 Lecture Notes in Computer Science  
In this paper, we use a probabilistic object-relational framework to model representation and retrieval strategies that take into account vagueness at both content and structure level.  ...  Many XML retrieval applications require relevance-oriented ranking of retrieved elements in order to capture the vagueness inherent to the information retrieval process.  ...  In Section 4, we describe the probabilistic object-relational representation of XML documents. In Section 5, we describe the probabilistic object-relational evaluation of XML queries.  ... 
doi:10.1007/978-3-540-25957-2_34 fatcat:4etmybrt4jdlvht5nksvdixwji

PEPX

Te Li, Qihong Shao, Yi Chen
2006 Proceedings of the 15th ACM international conference on Information and knowledge management - CIKM '06  
However, in order to calculate the probability of a query result, existing probabilistic XML data models need to retrieve all these intermediate nodes.  ...  Nevertheless, using current probabilistic XML data models, it is inevitable to access all the ancestors of the XML nodes in a pattern match to the query in order to compute the probability of the query  ... 
doi:10.1145/1183614.1183761 dblp:conf/cikm/LiSC06 fatcat:2mjodpu4fnc5nmscrugwl2n6ey

The TopX DB&IR engine

Martin Theobald, Ralf Schenkel, Gerhard Weikum
2007 Proceedings of the 2007 ACM SIGMOD international conference on Management of data - SIGMOD '07  
TopX integrates efficient algorithms for top-k-style ranked retrieval with powerful scoring models for text and XML documents, as well as dynamic and selftuning query expansion based on background ontologies  ...  This paper proposes a demo of the TopX search engine, an extensive framework for unified indexing, querying, and ranking of large collections of unstructured, semistructured, and structured data.  ...  for the Evaluation of XML Retrieval (INEX) on XML IR.  ... 
doi:10.1145/1247480.1247635 dblp:conf/sigmod/TheobaldSW07 fatcat:ehiibvqfarh3rkyilvcnmsjr3i

An Attribute-based Model for Semantic Retrieval

Hany Azzam, Thomas Roelleke
2010 Lernen, Wissen, Daten, Analysen  
The modelling approach represents both semantic and textual data in one unifying framework, referred to as the probabilistic object-relational content modelling framework.  ...  Overall, the probabilistic objectrelational content model can guide how semantic search and semantic data are modelled.  ...  Acknowledgments We would like to thank Jinyoung Kim of the University of Massachusetts Amherst for providing us with the collection and the queries.  ... 
dblp:conf/lwa/AzzamR10 fatcat:euiyz3prdvglnlhhkh356vapyi

Enhancing the Performance of XML Query Processing - Semantic Cache System

M.R. Sumalatha, V. Vaidehi, A. Kannan
2006 2006 International Conference on Advanced Computing and Communications  
The semantic caching technology can help to improve the efficiency of XML query processing in the Web environment.  ...  With the advent of XML, great challenges arise from the demand for efficiently retrieving information from remote XML sources across the Internet.  ...  To achieve effective cache management, the access and management of the cached data in a semantic caching system is typically at the level of query descriptions.  ... 
doi:10.1109/adcom.2006.4289857 fatcat:yjr7bnq7yveo3n64rnuxtbl5mi

Probabilistic XML: Models and Complexity [chapter]

Benny Kimelfeld, Pierre Senellart
2013 Studies in Fuzziness and Soft Computing  
Beyond representation, probabilistic XML systems are expected to support data management in a way that properly reflects the uncertainty.  ...  Efficiently and effectively accomplishing data-management tasks in that manner is a major technical challenge. This chapter reviews the literature on probabilistic XML.  ...  Query Evaluation In this section, we discuss a central aspect in the management of probabilistic XML-query evaluation.  ... 
doi:10.1007/978-3-642-37509-5_3 fatcat:lcoqkx7euvfb3dietqvb6v3qva

PowerDB-XML: A Platform for Data–Centric and Document–Centric XML Processing [chapter]

Torsten Grabs, Hans-Jörg Schek
2003 Lecture Notes in Computer Science  
Moreover, we show that document-centric XML processing is efficiently feasible using relational database systems for storage management and standard SQL.  ...  Relational database systems are well-suited as a platform for data-centric XML processing. Data-centric applications process regularly structured XML documents using precise predicates.  ...  [18] that information retrieval using relational database systems for storage management is efficient.  ... 
doi:10.1007/978-3-540-39429-7_7 fatcat:3yvno6vrd5endi3pgkd6w6vvxm

Introduction to the special issue on database and information retrieval integration

W. Bruce Croft, Hans-J. Schek
2007 The VLDB journal  
, or developing a unified model and system.  ...  From an IR perspective, dealing with structure started in the 1970s with commercial search services such as MED-LINE and DIALOG that had Boolean field restrictions.  ...  Another important line of research in IR has been retrieval using structured documents.  ... 
doi:10.1007/s00778-007-0074-x fatcat:ld66ny4vvrbuze7hwhhl7xu2ca

Score region algebra

Vojkan Mihajlović, Henk Ernst Blok, Djoerd Hiemstra, Peter M. G. Apers
2005 Proceedings of the 14th ACM international conference on Information and knowledge management - CIKM '05  
The evaluation of the system is performed on a collection of IEEE articles in XML format provided by INEX.  ...  A unified database framework that will enable better comprehension of ranked XML retrieval is still a challenge in the XML database field.  ...  any change in document structure or used retrieval model, will lead to system developers needing to change major parts of the retrieval system • traditional IR systems are developed for a simple query  ... 
doi:10.1145/1099554.1099560 dblp:conf/cikm/MihajlovicBHA05 fatcat:iairbfzqircijowpw2d3ufbt4m

Report on the DB/IR panel at SIGMOD 2005

Sihem Amer-Yahia, Pat Case, Thomas Rölleke, Jayavel Shanmugasundaram, Gerhard Weikum
2005 SIGMOD record  
However, emerging applications such as content management and XML data management, which have an abundant mix of structured and unstructured data, require us to rethink data management assumptions such  ...  Consequently, there has been no single unified system model for managing both structured and unstructured data, and processing both precise and ranked queries.  ...  In 1999, he obtained his PhD on "POOL: A probabilistic object-oriented logic for information retrieval".  ... 
doi:10.1145/1107499.1107514 fatcat:ngwqt5smibgsvkpo4b4orxp5we

Top-k Query Processing Techniques in Uncertain Databases: A Review

Cherry Khosla, Parveen Kakkar
2015 International Journal of Computer Applications  
Ranking queries (often called as top-k) are useful in answering most important query answers in various domains such as web search, managing sensor data, location tracking, data mining tasks and multimedia  ...  In this survey paper, we describe and classify different top-k processing techniques in probabilistic databases and their implications.  ...  Table-1summarises the difference between traditional database management system and data stream management system. In probabilistic databases, there can two different types of top-k problems.  ... 
doi:10.5120/21345-4358 fatcat:zazx3lvi2najdayttvujqmb3be

ProApproX

Pierre Senellart, Asma Souihli
2011 Proceedings of the 2011 international conference on Management of data - SIGMOD '11  
We demonstrate a system for querying probabilistic XML documents with simple XPath queries.  ...  A user chooses between a variety of query answering techniques, both exact and approximate, and observes the running behavior, pros, and cons, of each method, in terms of efficiency, precision of the result  ...  A PROBABILISTIC XML SYSTEM Our system evaluates queries over a given probabilistic XML document either with an exact calculation when some form of independence between query matches is detected, or by  ... 
doi:10.1145/1989323.1989480 dblp:conf/sigmod/SenellartS11 fatcat:okoyaxoh6nak3ai3ykn3ybbwta

A probabilistic XML merging tool

Talel Abdessalem, M. Lamine Ba, Pierre Senellart
2011 Proceedings of the 14th International Conference on Extending Database Technology - EDBT/ICDT '11  
This demonstration paper presents a probabilistic XML data merging tool, that represents the outcome of semi-structured document integration as a probabilistic tree.  ...  The resulting probabilistic repository can be queried using a subset of the XPath query language.  ...  This probabilistic XML representation system is denoted PrXML fie .  ... 
doi:10.1145/1951365.1951435 dblp:conf/edbt/AbdessalemBS11 fatcat:pucaygvyf5bxzesabenwn4aijq

Going Native: Indexing architecture of eXist-db_ An Open Source native XML database system

Raghad Yaseen Lazim, Adzhar Kamaludin
2013 2013 IEEE International Conference of IEEE Region 10 (TENCON 2013)  
This paper presents the indexing architecture of eXist-db, a native XML database and modified the query engine of eXist by indexing schema supports quick identification of structural node relationships  ...  The difference between the nature of the database structure and XML data structure became an important research topic, and this led to emergence eXist-db, a native XML database which designed specifically  ...  The difference between the nature of the database structure and XML data structure, leads to some problems and important issues such as: Involved in storing data, retrieval from the database, and Lack  ... 
doi:10.1109/tencon.2013.6718503 fatcat:b5c5eolkhncupcy7g36bksjnyq
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