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Sihem Amer-Yahia, Laks V. S. Lakshmanan, Shashank Pandit
2004 Proceedings of the 2004 ACM SIGMOD international conference on Management of data - SIGMOD '04  
An equally compelling paradigm for querying XML documents is full-text search on textual content.  ...  We address this mismatch by considering queries on structure as a "template", and looking for answers that best match this template and the full-text search.  ...  The second author's work was supported in part by grants from NSERC (Canada) and NCE/IRIS. Part of this work was performed when the third author was visiting UBC as an intern in Summer 2003.  ... 
doi:10.1145/1007568.1007581 dblp:conf/sigmod/Amer-YahiaLP04 fatcat:kivqnzy7ibbn5enokrgilyp3ua

A flexible extension of XPath to improve XML querying

Ernesto Damiani, Stefania Marrara, Gabriella Pasi
2008 Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval - SIGIR '08  
This work presents a flexible XML selection language, FleX-Path which allows the formulation of flexible constraints on both structure and content of XML documents.  ...  Future work will include an extension of this idea to XQuery and the development of a new flexible query engine for XML documents to be tested on an INEX collection.  ...  the development of a full FleXPath engine to the next future.  ... 
doi:10.1145/1390334.1390537 dblp:conf/sigir/DamianiMP08 fatcat:ja4cjrycbratdcqkkfcdf4wshu

A Flexible XML Query Language for NON Dummies

Stefania Marrara, Emanuele Panzeri, Gabriella Pasi
2011 Italian Information Retrieval Workshop  
This paper introduces and motivates our proposal of an XPath extension which allows the definition of queries with flexible constraints on both content and structure.  ...  The proposed language allow expert users to benefit of the recall improvements of flexible languages while using their collection knowledge to improve the retrieval precision.  ...  Examples of CAS approaches are offered by, for instance, XIRQL [13] , NEXI [19] , TeXQuery [3] , and FleXPath [5] , and the recent standard XQuery and XPath Full Text 1.0 [1] .  ... 
dblp:conf/iir/MarraraPP11 fatcat:5bgbt7ykebcytagrk5fjzxloii

Fuzzy Approaches to Flexible Querying in XML Retrieval

Stefania Marrara, Gabriella Pasi
2016 International Journal of Computational Intelligence Systems  
In this paper we review some approaches to flexible querying in XML that apply several techniques among which Fuzzy Set Theory.  ...  We then present PatentLight, a tool for patent retrieval that was developed to show the expressive power of Flexy.  ...  These constraints allow a full-text search with a computation of a relevance score for each XML fragment.  ... 
doi:10.1080/18756891.2016.1180822 fatcat:4zwlqlflwfaxfhcabxxgjvvfpy

Database and Information Retrieval Techniques for XML [chapter]

Mariano P. Consens, Ricardo Baeza-Yates
2005 Lecture Notes in Computer Science  
The world of data has been developed from two main points of view: the structured relational data model and the unstructured text model.  ...  The two distinct cultures of databases and information retrieval now have a natural meeting place in the Web with its semi-structured XML model.  ...  Amer-Yahia, S., Lakshmanan, L.V.S., Pandit, S.: FleXPath: Flexible structure and full-text querying for XML.  ... 
doi:10.1007/11596370_4 fatcat:yxugdpgk6zck5acrt7jofemcwm

A Fuzzy Extension for the XPath Query Language [chapter]

Alessandro Campi, Sam Guinea, Paola Spoletini
2006 Lecture Notes in Computer Science  
The current state of the art in querying XML data is represented by XPath and XQuery, both of which rely on Boolean conditions for node selection.  ...  In this paper we describe a XML querying framework, called FuzzyXPath, based on Fuzzy Set Theory, relying on fuzzy conditions for the definition of flexible constraints on stored data.  ...  FlexPath considers queries on structure as a template, and looks for answers that best match this template and the full-text search.  ... 
doi:10.1007/11766254_18 fatcat:ojeh6w7l7zb7tglwswdzcb54jm

Information Extraction for Semi-structured Email Corpora

Hendrik Adam, Philipp Schaer
2019 Lernen, Wissen, Daten, Analysen  
To surpass rigid extraction rules in wrappers based on XPath or CSS selectors, we present a new extraction method extending the FleXPath method that was used for structured XML retrieval in INEX.  ...  We expand this method to work with semi-structured HTML and present a case study and a short evaluation based on a corpus of emails from scientific publishers.  ...  Thus FlexPath allows using both: database style querying and full-text search. The results from both query approaches are scored and ranked on structural and full-text search features.  ... 
dblp:conf/lwa/AdamS19 fatcat:mwq6y65jobgnboqka4avxiptua

A co-training framework for searching XML documents

Wilfred Ng, Ho Lam Lau
2007 Information Systems  
We then evaluate the XML search effectiveness and quality for each tailored XR and propose a Meta-XML Ranker (MXR) comprising the four XRs.  ...  By using a set of key-tag queries on a variety of XML documents, we show that the precision of the result of the RSCF-based MXR is effective.  ...  HKUST6185/02E, HKSUT6165/03E and DAG04/05.EG10.  ... 
doi:10.1016/ fatcat:zwwn3u2zkvca3lsn6c23nry4kq

A multi-ranker model for adaptive XML searching

Ho Lam Lau, Wilfred Ng
2007 The VLDB journal  
As XML has become a defacto standard for exchanging Web data, an interesting and practical research problem is the development of models and techniques to satisfy various needs and preferences in searching  ...  In this paper, we employ a list of simple XML tagged keywords as a vehicle for searching XML fragments in a collection of XML documents.  ...  FleXPath [3] considers XPath queries of structures as a "template" and finds the best matching between the template and the full-text search.  ... 
doi:10.1007/s00778-007-0068-8 fatcat:dfkh4fdcyzfi5kglkafja3kone

Efficiently Querying Large XML Data Repositories: A Survey

Gang Gou, Rada Chirkova
2007 IEEE Transactions on Knowledge and Data Engineering  
, whereas in the native approach, specialized storage and query processing systems tailored for XML data are developed from scratch to further improve XML query performance.  ...  In this survey, we review, classify, and compare major techniques for twig pattern matching. 1 Specifically, we consider two classes of major XML query processing techniques: the relational approach and  ...  ACKNOWLEDGMENTS The authors are grateful to Jun Yang and to the anonymous reviewers for their valuable comments and suggestions on earlier drafts of this survey.  ... 
doi:10.1109/tkde.2007.1060 fatcat:kzmwqcla6rfyvakf4ctc5dwlwm

Enabling Schema-Free XQuery with meaningful query focus

Yunyao Li, Cong Yu, H. V. Jagadish
2006 The VLDB journal  
MQF enables users to take full advantage of the preciseness and efficiency of XQuery without requiring (perfect) knowledge of the document structure.  ...  The widespread adoption of XML holds the promise that document structure can be exploited to specify precise database queries.  ...  We would like to thank the anonymous reviewers for their constructive suggestions. We also would like to thank Adriane Chapman for her help with proofreading this paper.  ... 
doi:10.1007/s00778-006-0003-4 fatcat:2xclu6l5zvas7lmyyfnrkydldq

Web and Semantic Web Query Languages: A Survey [chapter]

James Bailey, François Bry, Tim Furche, Sebastian Schaffert
2005 Lecture Notes in Computer Science  
Three categories of Web query languages can be distinguished, according to the format of the data they can retrieve: XML, RDF and Topic Maps.  ...  This article introduces the spectrum of languages falling into these categories and summarises their salient aspects. The languages are introduced using common sample data and query types.  ...  Acknowledgements The authors are thankful to Renzo Orsini, Ian Horrocks, Michael Kraus, and Oliver Bolzer for stimulating discussions and useful suggestions during the production of the report [56] ,  ... 
doi:10.1007/11526988_3 fatcat:56l6wz2mtfefpgx3sn6o3k5l4m

Making database systems usable

H. V. Jagadish, Adriane Chapman, Aaron Elkiss, Magesh Jayapandian, Yunyao Li, Arnab Nandi, Cong Yu
2007 Proceedings of the 2007 ACM SIGMOD international conference on Management of data - SIGMOD '07  
We identify a set of five pain points and propose a research agenda to address these.  ...  We also stress the importance of provenance and of consistency across presentation models.  ...  This is not merely an integration of full-text search with relational query capability-such an approach still requires knowledge of the database schema.  ... 
doi:10.1145/1247480.1247483 dblp:conf/sigmod/JagadishCEJLNY07 fatcat:x752ap3vgrcmhllervg32weuea

Blind Queries Applied to JSON Document Stores

Stefania Marrara, Mauro Pelucchi, Giuseppe Psaila
2019 Information  
The heterogeneous structure of JSON documents returned by different APIs constitutes a barrier to effectively query and analyze these data sets.  ...  This paper is an evolution of a technique for blind querying Open Data portals and of its implementation within the Hammer framework, presented in some previous work.  ...  In a different perspective, the approaches presented in References [7, 8] propose a flexible XML selection language-named FleXPath-which allows for the formulation of flexible constraints on both structure  ... 
doi:10.3390/info10100291 fatcat:jjq5m7ndlzdknhqxazcz2fiweq

Approximating expressive queries on graph-modeled data: The GeX approach

Federica Mandreoli, Riccardo Martoglia, Wilma Penzo
2015 Journal of Systems and Software  
GeX generalizes existing approaches and provides for a highly expressive graph-based query language that supports queries ranging from keyword-based to structured ones.  ...  We present the GeX (Graph-eXplorer) approach for the approximate matching of complex queries on graph-modeled data.  ...  In later years, FleXPath [3] focused on this issue by dealing with XML data.  ... 
doi:10.1016/j.jss.2015.07.028 fatcat:mkia2jxghfe25ogttncgygjalu
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