[PDF] Top 20 Federated SPARQL Queries Processing with Replicated Fragments

... performs federated queries on A1 (DBpedia) and A2 ...the queries, a data consumer endpoint C1 with replicated fragments has been installed as in Figure ...2. Fragments are ... Voir le document complet

... join processing in presence of replicated ...lower with FedX ` Fedra ` PeNeLoop than with FedX or FedX ` Fedra, and the reduced number of transferred tuples granted by Fe- dra is ...of ... Voir le document complet

... and fragments and endpoints of Figure ...relevant fragments for Q3 triple patterns, and the endpoints that provide these ...relevant fragments f 1 and f ...relevant fragments have been ... Voir le document complet

... our federated query processing approach within the Corese semantic Web ...query processing efficiency, result completeness and data replication ...engine with an optimized version in which we ... Voir le document complet

... evaluating SPARQL queries against TPF servers hosting replicated ...of SPARQL query processing across replicated TPF servers according to their pro- cessing capabilities, and ... Voir le document complet

... data federated into organisations’ data warehouses are usually analyzed through a variety of dynamic documents authored with business intelligence (BI) ...users with technical skills, as it often ... Voir le document complet

... of fragments of dataset D 2.2 Updating Public SPARQL Endpoints Data accessible through public SPARQL endpoints can be updated, and diver- gence could exist with their replicas in the local ... Voir le document complet

... different fragments that should be considered in order to obtain an answer as complete as possible, modulo the considered endpoints and the allowed divergence ...different fragments of ki that should be ... Voir le document complet

... for federated SPARQL ...join processing over SPARQL endpoints or TPF servers hosting replicated data by distributing bind- ings among available ...join processing is equally dis- ... Voir le document complet

... the SPARQL endpoints poor availability, several strategies may be ...Data Fragments (LDF) [ 81 ] have been proposed to exploit client resources to relieve server resources and improve data ...query ... Voir le document complet

... Abstract. Federated SPARQL query processing allows to query multi- ple interlinked datasets hosted by remote SPARQL ...pertinent federated queries over a growing number of ... Voir le document complet

... query processing is distributed between a server and smart client that collaborate to process SPARQL ...servers with a restricted interface that processes queries that completes within bounded ... Voir le document complet

... Pen with Federated SPARQL queries Evaluation Metrics: i) Execution Time (ET): is the elapsed time since the query is posed until the complete answer is ...parallelized queries (NPQ): is ... Voir le document complet

... the federated query engines FedX and ANAPSID with respect to their extensions using DAW, Fedra, and LILAC, ...ANAPSID with LILAC is to show that LILAC is not tailored for one federated query ... Voir le document complet

... combined with divergence metrics for scenarios where latest dataset ver- sion is ...data replicated from different authorita- tive endpoints using one single ... Voir le document complet

... aggregation queries. PeerCQ [12] was developed to process continuous queries on top of a ...SQL queries and the data is not stored in the ...continuous queries and many of their technique s ... Voir le document complet

... and queries run continuously returning new results as new data ...for processing data streams in a continuous ...centralized processing of continuous queries over distributed data is simply ... Voir le document complet

... of processing join queries over data streams is to execute the query over a sliding window [12] that maintains a restricted number of recent data ...tributed processing of data streams is a well ... Voir le document complet

... and Queries: We used BeSEPPI benchmark and gMark ...approach with the W3C ...of SPARQL property path expressions. BeSEPPI has 236 queries (73 ASK queries and 163 SELECT queries) ... Voir le document complet

... RDBMS, which entails better performances. Above all, fuzzy queries are directly submitted to the DBMS. • tight coupling: the new features are incorporated into the RDBMS inner core. This solution, which is of ... Voir le document complet