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Freshening up while staying fast: Towards hybrid SPARQL queries

by Jürgen Umbrich, Marcel Karnstedt, Aidan Hogan, Josiane Xavier Parreira - In EKAW , 2012
"... Abstract. Querying over cached indexes of Linked Data often suffers from stale or missing results due to infrequent updates and partial coverage of sources. Conversely, live decentralised approaches offer fresh results directly from the Web, but exhibit slow response times due to accessing numerous ..."
Abstract - Cited by 5 (3 self) - Add to MetaCart
remote sources at runtime. We thus propose a hybrid query approach that improves upon both paradigms, offering fresher results from a broader range of sources than Linked Data caches while offering faster results than live querying. Our hybrid query engine takes a cached and live query engine as black

Optimizing SPARQL Query Processing On Dynamic and Static Data Based on Query Response Requirements Using Materialization

by Soheila Dehghanzadeh
"... Abstract. To integrate various Linked Datasets, the data warehousing and the live query processing approaches provide two extremes for the optimized response time and quality respectively. The first approach pro-vides very fast responses but su↵ers from providing low-quality responses because change ..."
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changes of original data are not immediately reflected on ma-terialized data. The second approach provides accurate responses but it is notorious for long response times. A hybrid SPARQL query processor provides a middle ground between two specified extremes by splitting triple patterns of the SPARQL

Object/relational query optimization with chase

by Lucian Popa
"... and backchase ..."
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and backchase

Towards Secure Electronic Workflows Examples of Applied PKI Supervisor:

by Sebastian Fritsch, Dipl Ing, Vangelis Karatsiolis Erklärung , 2006
"... Hiermit versichere ich, die vorliegende Diplomarbeit selbstständig und unter ausschliesslicher Verwendung der angegebenen Quellen und Hilfsmittel angefertigt zu haben. Diese Arbeit hat in gleicher oder ähnlicher Form noch keiner Prüfungsbehörde vorgelegen. Darmstadt, 14. Februar 2006 ..."
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Hiermit versichere ich, die vorliegende Diplomarbeit selbstständig und unter ausschliesslicher Verwendung der angegebenen Quellen und Hilfsmittel angefertigt zu haben. Diese Arbeit hat in gleicher oder ähnlicher Form noch keiner Prüfungsbehörde vorgelegen. Darmstadt, 14. Februar 2006

Using BubbleStorm Accepted Master-Thesis from Marcel Lucas

by Assessor Prof Alej, Ro P. Buchmann, Ph. D
"... Hiermit versichere ich, die vorliegende Master-Thesis ohne Hilfe Dritter nur mit den angegebenen Quellen und Hilfsmitteln angefertigt zu haben. Alle Stellen, die aus Quellen entnommen wurden, sind als solche kenntlich gemacht. Diese Arbeit hat in gleicher oder ähnlicher Form noch keiner Prüfungsbehö ..."
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of scalability and maintainability. Hence, different approaches are based on Peer-to-Peer (P2P) technology. In particular, fast-paced NVEs stress these systems and most likely cause high overlay maintenance overhead. This Master’s Thesis presents a novel approach to spatial Publish/Subscribe (Pub/Sub) in P2P

unknown title

by Lydia B. Chilton, Juho Kim, Paul André, Felicia Cordeiro, James A. Landay, Daniel S. Weld, Steven P. Dow, Robert C. Miller, Haoqi Zhang
"... Organizing conference sessions around themes improves the experience for attendees. However, the session creation process can be difficult and time-consuming due to the amount of expertise and effort required to consider alterna-tive paper groupings. We present a collaborative web appli-cation calle ..."
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constraint satisfaction. Meta-data elicitation involves a large group of experts working simul-taneously, while global constraint satisfaction involves a smaller group that uses the meta-data to form sessions. We evaluated Frenzy with 48 people during a deployment at the CSCW 2014 program committee meeting

Microsoft Word - meenakshiPal.docx

by Administrator
"... Abstract-In the recent years, with the acquaintance of internet, there has been large amount of data resides on the web. Therefore it becomes necessity for fast retrieval search engines that retrieve documents and images.This paper tries to provide a comprehensive review and characterize the variou ..."
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Abstract-In the recent years, with the acquaintance of internet, there has been large amount of data resides on the web. Therefore it becomes necessity for fast retrieval search engines that retrieve documents and images.This paper tries to provide a comprehensive review and characterize

unknown title

by Lydia B. Chilton, Juho Kim, Paul André, Felicia Cordeiro, James A. Landay, Daniel S. Weld, Steven P. Dow, Robert C. Miller, Haoqi Zhang
"... Organizing conference sessions around themes improves the experience for attendees. However, the session creation process can be difficult and time-consuming due to the amount of expertise and effort required to consider alterna-tive paper groupings. We present a collaborative web appli-cation calle ..."
Abstract - Add to MetaCart
constraint satisfaction. Meta-data elicitation involves a large group of experts working simul-taneously, while global constraint satisfaction involves a smaller group that uses the meta-data to form sessions. We evaluated Frenzy with 48 people during a deployment at the CSCW 2014 program committee meeting

De-indirection for Flash-based Solid State Drives

by Yiying Zhang, University Of Wisconsin-madison, Prof Shan Lu, Prof Paul Barford, Prof Jude, W. Shavlik , 2013
"... ii iv vTo my parents vi vii Acknowledgements I would first and foremost extend my whole-hearted gratitude to my advisors, An-drea Arpaci-Dusseau and Remzi Arpaci-Dusseau. Andrea and Remzi are the reason that I had the opportunity for this exceptional Ph.D. journey. To this day, I still re-member the ..."
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ii iv vTo my parents vi vii Acknowledgements I would first and foremost extend my whole-hearted gratitude to my advisors, An-drea Arpaci-Dusseau and Remzi Arpaci-Dusseau. Andrea and Remzi are the reason that I had the opportunity for this exceptional Ph.D. journey. To this day, I still re-member the moment when they took me as their student and the joy and hope in my heart. Andrea and Remzi have showed me what systems research is like and how much fun and challenging it can be. Before this journey with them, I had always liked and believed in the beauty of mathematics and theory. My initial interest in systems research happened when I took Remzi’s Advanced Operating Systems

Secure Geographic Routing in Wireless Sensor Networks

by unknown authors , 2013
"... the non-exclusive right to publish the Work electronically and in a non-commercial purpose make it accessible on the Internet. The Author warrants that he/she is the author to the Work, and warrants that the Work does not contain text, pictures or other material that violates copyright law. The Auth ..."
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the non-exclusive right to publish the Work electronically and in a non-commercial purpose make it accessible on the Internet. The Author warrants that he/she is the author to the Work, and warrants that the Work does not contain text, pictures or other material that violates copyright law. The Author shall, when transferring the rights of the Work to a third party (for example a publisher or a company); acknowledge the third party about this agreement. If the Author has signed a copyright agreement with a third party regarding the Work, the Author warrants hereby that he/she has obtained any necessary permission from this third party to let Chalmers University of Technology and University of Gothenburg store the Work electronically and make it accessible on the Internet.
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