Category: Seminar

Jesús Camacho-Rodríguez: PAXQuery : Efficient Parallel Processing of Complex XQuery

10.00, room 455, PCRI Abstract Increasing volumes of data are being produced and exchanged over the Web, in particular in tree-structured formats such as XML or JSON. This leads to a need of highly scalable algorithms and tools for processing such data, capable to take advantage of massively parallel processing frameworks. This work considers the …

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Permanent link to this article: https://team.inria.fr/oak/2014/01/13/jesus-camacho-rodriguez-paxquery-efficient-parallel-processing-of-complex-xquery/

Luca Cabibbo: NoSQL Database Design for Next-Generation Web Applications

When: Friday, January 10, at 14.00 Where: PCRI building, room 445 Who: Luca Cabibbo, Università Roma Tre Title: NoSQL Database Design for Next-Generation Web Applications Abstract: NoSQL database systems especially support the development of next-generation web applications, for which: (i) data of interest have a flexible structure, (ii) data access is based on simple read-write …

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Permanent link to this article: https://team.inria.fr/oak/2014/01/10/luca-cabibbo-nosql-database-design-for-next-generation-web-applications/

Raphaël Bonaque: Trustworthiness Inference in Wikipedia

15.00, room 445, PCRI Abstract Wikipedia is one of the most used information source, however being freely editable raises concerns over the quality of this information. Using Wikitrust, a trust network over Wikipedia created by DBWeb, we will try and tackle one of the major challenges of the online encyclopedia : create a trustworthiness model …

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Permanent link to this article: https://team.inria.fr/oak/2013/10/04/raphael-bonaque-trustworthiness-inference-in-wikipedia/

Stefano Ceri: Multi-Platform, Reactive Crowdsourcing

14.00, room 455, PCRI Abstract In recent years, we developed CrowdSearcher, which integrates a conceptual framework, a specification procedure and a reactive execution control environment for designing, deploying, and monitoring crowd-based applications on top of social systems, including social networks and crowdsourcing platforms. We show how social platforms, such as Facebook or Twitter, can be …

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Permanent link to this article: https://team.inria.fr/oak/2013/09/27/stefano-ceri-multi-platform-reactive-crowdsourcing/

Soudip Roy Chowdhury: Assisted Reuse of Pattern-Based Composition Knowledge for Mashup Development

13.45, room 445, PCRI Abstract Web mashup or mashup development is a Web 2.0 software development approach in which users are expected to create applications by combining data sources, application logic and UI components together to cater for their situational application needs. However, in reality creating even a simple mashup application is a complex task …

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Permanent link to this article: https://team.inria.fr/oak/2013/09/13/soudip-roy-chowdhury-assisted-reuse-of-pattern-based-composition-knowledge-for-mashup-development/

Asterios Katsifodimos: Scalable View-based Techniques for Web Data : Algorithms and Systems

16.30, room 435, PCRI Abstract XML was recommended by W3C in 1998 as a markup language to be used by device- and system-independent methods of representing information. XML is nowadays used as a data model for storing and querying large volumes of data in database systems. In spite of significant research and systems development, many …

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Permanent link to this article: https://team.inria.fr/oak/2013/06/11/asterios-katsifodimos-scalable-view-based-techniques-for-web-data-algorithms-and-systems/

Meghyn Bienvenu: Assorted topics in ontology-based data access

14.00, room 455, PCRI Abstract In this talk, I will start by recalling the basics of ontology-based data access, focusing on ontologies formulated in lightweight description logics. Afterwards, I will give a brief description of my recent work on this topic, evoking the results in the following papers: Tractable Approximations of Consistent Query Answering for …

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Permanent link to this article: https://team.inria.fr/oak/2013/06/07/meghyn-bienvenu-assorted-topics-in-ontology-based-data-access/

Cédric du Mouza: AS-Index: Une structure efficace de recherche de texte

10.30, room 445, PCRI Résumé AS-Index est une nouvelle structure pour la recherche exacte de chaîne de caractères dans des bases de données textuelles résidant sur le disque. Il repose sur le hachage contrairement à d’autres solutions basées soit sur des arbres ou des treillis. Il indexe chaque n-gram de la base dans sa version …

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Permanent link to this article: https://team.inria.fr/oak/2013/05/02/cedric-du-mouza-as-index-une-structure-efficace-de-recherche-de-texte/

Dario Colazzo: Processing XML Queries and Updates on Map/Reduce Clusters

14.30, room 435, PCRI Abstract Very large XML documents are generated and processed in several contexts, in particular in those involving scientific data and logs. In order to process such large documents we have designed and implemented techniques based on data partitioning for the evaluation of XQuery queries and updates on Map/Reduce clusters. The proposed …

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Permanent link to this article: https://team.inria.fr/oak/2013/04/19/dario-colazzo-processing-xml-queries-and-updates-on-mapreduce-clusters/

Bogdan Cautis: Social-aware search: instance optimality versus efficiency

14.00, room 445, PCRI Abstract We present in this talk our recent research on top-k query answering in social applications. This problem requires a significant departure from socially agnostic techniques for information retrieval. One can now exploit the social links in order to obtain more relevant results, valid not only with respected to the keyword …

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Permanent link to this article: https://team.inria.fr/oak/2013/03/29/bogdan-cautis-social-aware-search-instance-optimality-versus-efficiency/