Top-k query processing
Efficient Early Top-k Query Processing in Overloaded P2P Systems
... Abstract. Top-k query processing in P2P systems has focused on effi- ciently computing the top-k results while reducing network traffic and query response ...high ...
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As-Soon-As-Possible Top-k Query Processing in P2P Systems
... 4.1 Query Forwarding and Local Execution Query processing starts at the query originator, ...a top-k query q. The query originator performs some ...the query ...
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ASAP Top-k Query Processing in Unstructured P2P Systems
... Efficient processing of top-k queries is both an important and hard problem that is still receiving much ...with top-k query processing in centralized database management ...
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Privacy preserving top-k query processing over outsourced data
... requête top-k, la requête skyline [9, 62] est une requête importante qui est utilisée pour réduire le nombre de résul- tats retournés aux utilisateurs, en éliminant ceux qui ne sont pas ...requête ...
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An Efficient Mechanism for Processing Top-k Queries in DHTs
... of top-k query processing in Distributed Hash Tables ...for top-k query processing in centralized and distributed systems are based on the Threshold Algorithm (TA) ...
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Reducing Network Traffic in Unstructured P2P Systems Using Top-k Queries
... the Top-k query ...a Top-k query processing algorithm for Edutella, a super-peer network in which a small percentage of nodes are super-peers and are assumed to be highly ...
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CrowdDB: Query processing with the VLDB crowd
... on top of a Java database engine as the range of available Java web- frameworks significantly simplifies the integration of web-services and creation of web-based data entry ...
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Evaluating Top-k Queries with Inconsistency Degrees
... 7. EMPIRICAL EVALUATION Our experimental assessment has been carried out with two main objectives in mind. In the first part, we aimed at measuring the time required to transform a database in- stance into a ...
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Query Processing in Multistore Systems
... Cloud data management (see Figure 2.1) relies on a distributed storage layer, wher- eby data is typically stored in files or objects distributed over the nodes of a shared- nothing cluster. This is one major difference ...
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Query processing in P2P systems
... for query processing in P2P sys- ...for query rout- ing. In particular, we focus on query routing in unstructured networks and ...for processing complex queries, e.g. ...
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CQ-Buddy: Harnessing Peers For Distributed Continuous Query Processing
... like query language and runs on top of a distributed information mediation system that integrates heterogeneous data ...the processing and treat the clients as simply receiving and presenting the ...
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Continuous Top-k Queries over Real-Time Web Streams
... similarity-based top-k [15, 25, 27, 26, 5] systems, matching items have also to exhibit better relevance ...the top-k results of continuous ...the query index traversal for locating ...
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Toward Personalized Peer-to-Peer Top-K Processing
... Evaluation Metrics. We were mainly interested in the implicit semantic rela- tions exhibited by users’ tagging behaviors. As in [3], there is a link between two users if they tag two items in common with at least one ...
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SPARQL distributed query processing over linked data
... on top of the standard SPARQL semantics through a set of rewrite rules relying on service ...federated query processing ...during query rewriting and query planning steps while dynamic ...
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Personalized top-k processing: from centralized to decentralized systems
... an upper-bound of the similarity between users is first computed based on the digests of profiles. This avoids transferring unnecessarily entire profiles. P4Q relies on Bloom filters to generate a compact representation ...
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Flower-CDN: A hybrid P2P overlay for Efficient Query Processing in CDN
... Any CDN has to address four main issues: response time, scalability, hit ratio and liveness. By replicating the content across the CDN, the CDN can serve many client requests leading to a high hit ratio and availability ...
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P2P Join Query Processing over Data Streams
... continuous query processing [13][10][30][6][20]. In PIER [13], a query processor is used on top of a DHT to process one-time join ...on top of a ...scalable query infrastructure ...
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Collaborative SPARQL Query Processing for Decentralized Semantic Data
... rebuild overlay networks on top of sources to allow efficient discovery. However, P2P data management raises issues on autonomy, i.e. participants must agree to participate in common tasks such as routing, ...
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Top-k Querying of Unknown Values under Order Constraints
... better top-2 answer is thus Wearable Devices and Watches, the latter being likely to have a higher score than Diving Watches (or Diving ...the k-most relevant apartments for a user, given user-provided ...
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Traitement de Requêtes Top-k dans les Communautés Virtuelles P2P de Partage de Données
... 5.5.1 Environnement de simulation 5.5.1.1 Jeux de donn´ ees Nous menons nos exp´eriences sur deux ensembles de donn´ees : les logs de serveur HTTP et un ensemble de donn´ees synth´etiques. L’Internet Traffic Archive 3 ...
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