SILURIAN: a Sparql vIsuaLizer for UndeRstanding querIes And federatioNs
نویسندگان
چکیده
SPARQL federated queries can be affected by both characteristics of the query and datasets in the federation. We present SILURIAN a Sparql visualizer for understanding queries and federations. SILURIAN visualizes SPARQL queries and, thus, it allows the analysis and understanding of a query complexity with respect to relevant endpoints and shapes of the possible plans.
منابع مشابه
DEFENDER: A DEcomposer for quEries agaiNst feDERations of Endpoints
We present DEFENDER and illustrate the benefits of identifying promising query decompositions and efficient plans that combine results from federations of SPARQL endpoints. DEFENDER is a query decomposer that implements a two-fold approach. First triple patterns in a SPARQL query are decomposed into simple sub-queries that can be completely executed on one endpoint. Second, sub-queries are comb...
متن کاملProcessing Aggregate Queries in a Federation of SPARQL Endpoints
More andmore RDF data is exposed on theWeb via SPARQL endpoints. With the recent SPARQL 1.1 standard, these datasets can be queried in novel and more powerful ways, e.g., complex analysis tasks involving grouping and aggregation, and even data frommultiple SPARQL endpoints, can now be formulated in a single query. This enables Business Intelligence applications that access data from federated w...
متن کاملA Heuristic-Based Approach for Planning Federated SPARQL Queries
A large number of SPARQL endpoints are available to access the Linked Open Data cloud, but query capabilities still remain very limited. Thus, to support efficient semantic data management of federations of endpoints, existing SPARQL query engines require to be equipped with new functionalities. First, queries need to be decomposed into sub-queries not only answered by the available endpoints, ...
متن کاملAnswering SPARQL Queries using Views
Views are used to optimize queries and to integrate data in Databases. The data integration schema is composed of terms, they are used to pose queries to the integration system, and to describe sources data. When the data descriptions are SPARQL conjunctive queries, their number and the complexity of answering queries using them may be very high. In order to keep query answering cost low, and i...
متن کاملQueryMed: An Intuitive SPARQL Query Builder for Biomedical RDF Data
We have developed an open-source SPARQL query builder and result set visualizer for biomedical data, QueryMed, that allows end users to easily construct and run translational medicine queries across multiple data sources. QueryMed is flexible enough to allow queries relevant to a wide range of biomedical topics, and can run queries across multiple SPARQL endpoints. It is designed to be accessib...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013