Category: Seminar

Roxana Horincar: Online Refresh Strategies for Content Based Feed Aggregation

14.00, room 445, PCRI Abstract With the rapid growth of data sources, services and devices connected to the Internet, online available web content is getting more and more diverse and dynamic. In order to facilitate the efficient dissemination of evolving and temporary information, many web applications publish their new information as RSS and Atom documents …

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Permanent link to this article: https://team.inria.fr/oak/2013/03/15/roxana-horincar-online-refresh-strategies-for-content-based-feed-aggregation/

EDBT 2013: Rehearsals

Alexandra and Jesús will do a rehearsal of the talks they will give at EDBT 2013. It will take place on Wednesday, March 13, at 11.00, room 445. Please find the details of the talks below.   When: Wednesday, March 13, at 11.00 Where: PCRI building, room 445 —– Authors: François Goasdoué, Ioana Manolescu and …

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Permanent link to this article: https://team.inria.fr/oak/2013/03/13/edbt-2013-rehearsals/

Matteo Magnani: The skyline operator: recent research trends and applications

14.30, room 445, PCRI Abstract The skyline operator (aka Pareto front) extracts relevant records from multidimensional databases according to multiple criteria. This operator has received a lot of attention because of its ability to identify the best records in a database without requiring to specify complex parameters like the relative importance of each criterion (as …

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Permanent link to this article: https://team.inria.fr/oak/2013/02/19/matteo-magnani-the-skyline-operator-recent-research-trends-and-applications/

Melanie Herschel: The Nautilus Analyzer – Understanding and Debugging Data Transformations

14.00, room 445, PCRI Abstract When developing data transformations – a task omnipresent in applications like data integration, data migration, data cleaning, or scientific data processing – developers quickly face the need to verify the semantic correctness of the transformation. Declarative specifications of data transformations, e.g., SQL or ETL~tools, increase developer productivity but usually provide …

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Permanent link to this article: https://team.inria.fr/oak/2013/02/15/melanie-herschel-the-nautilus-analyzer-understanding-and-debugging-data-transformations/

Katerina Tzompanaki: Design and Implementation of a tool for formulating recall-oriented structured queries on semantic networks

14.00, room 455, PCRI Abstract In the recent years there is a trend towards the creation of massive metadata repositories, usually based on the RDF/S technology, as in the domain of cultural heritage. ISO21127 (CIDOC Conceptual Reference Model) is a rich conceptual model (or ontology) capable of describing the world stored in such repositories. Simpler …

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Permanent link to this article: https://team.inria.fr/oak/2013/02/01/katerina-tzompanaki-design-and-implementation-of-a-tool-for-formulating-recall-oriented-structured-queries-on-semantic-networks/

Yanlei Diao: Scalable, Low-Latency Data Analytics and its Applications

14.00, room 445, PCRI Abstract An integral part of many data-intensive applications is the need to collect and analyze enormous data sets, such as click streams, search logs, and sensor streams to derive answers and insights with low latencies. Concurrently, new programming models and architectures have been developed for large-scale cluster computing, exemplified by recent …

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Permanent link to this article: https://team.inria.fr/oak/2012/12/20/yanlei-diao-scalable-low-latency-data-analytics-and-its-applications/

Themis Palpanas: Entity Resolution for Big Data

11.00, room 445, PCRI Abstract Highly heterogeneous data have boomed during the last decade, due to their largely distributed way of production: corporations of any size, individual users as well as automatic extraction tools have contributed a constantly increasing volume of heterogeneous and noisy information. Entity Resolution (ER) helps to reduce the corresponding entropy by …

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Permanent link to this article: https://team.inria.fr/oak/2012/12/19/themis-palpanas-entity-resolution-for-big-data/

Vassilis Christophides: Continuous Queries over Text Streams

10.30, room 445, PCRI Abstract Web 2.0 technologies have transformed the Web from a publishing only environment into a vibrant information place where yesterday’s end users become nowadays content generators themselves. The vast amounts of user generated content available in various social media (Facebook, Twitter, blogs, discussion forums) in conjunction with traditional information producers (e.g., …

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Permanent link to this article: https://team.inria.fr/oak/2012/12/18/vassilis-christophides-continuous-queries-over-text-streams/

Amélie Gheerbrant: Pattern-based XML queries

14.00, room 445, PCRI Abstract We present results of our study of pattern-based XML query languages. A variety of analogs of conjunctive queries over XML documents have been studied in the literature. We focus on languages based on tree patterns, which follow the structure of tree documents. They arise naturally in many problems related to …

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Permanent link to this article: https://team.inria.fr/oak/2012/12/07/amelie-gheerbrant-pattern-based-xml-queries/

Evaggelia Pitoura: Diversifying query results and answering historical queries on large graphs

14.00, room 445, PCRI Abstract In this talk, I shall briefly present our recent research on two topics: (a) supporting diversity in query results and (b) managing historical queries on graphs. Diversity has recently attracted a lot of attention as a means of increasing user satisfaction in recommendation systems, information retrieval and database queries. Diversification …

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Permanent link to this article: https://team.inria.fr/oak/2012/11/02/evaggelia-pitoura-diversifying-query-results-and-answering-historical-queries-on-large-graphs/