• Racer

  • Referenced in 65 articles [sw09837]
  • also provides the powerful and semantically well-defined conjunctive query language nRQL (new Racer Query...
  • SPARQL

  • Referenced in 129 articles [sw07429]
  • several interesting and very useful features for querying RDF.par In this paper, we survey ... SPARQL standard presenting its syntax and formal semantics. We then focus on the formalization ... important recently discovered issues regarding the normative semantics of federation and navigation in SPARQL ... impossibility of answering some unbounded federated queries and the high computational complexity of the evaluation...
  • MYSTIQ

  • Referenced in 11 articles [sw09439]
  • system that uses probabilistic query semantics [3] to find answers in large numbers of data ... poor quality, and therefore difficult to query: the same data item may have different representation ... from multiple data sources. If standard query semantics were applied to such queries...
  • XSEarch

  • Referenced in 28 articles [sw12180]
  • simple query language, suitable for a naive user. It returns semantically related document fragments that...
  • Jena

  • Referenced in 53 articles [sw10685]
  • Jena Toolkit open up the semantic Web. As more data is being stored ... locate specific information. SPARQL, a powerful new query language fills that space, making it easy ... SPARQL queries from your own Java™ applications with the Jena Semantic Web Toolkit...
  • TRIPLE

  • Referenced in 21 articles [sw02460]
  • TRIPLE –a query, inference, and transformation language for the semantic web. This paper presents TRIPLE ... layered and modular rule language for the Semantic Web. TRIPLE is based on Horn logic ... Logic but is especially designed for querying and transforming RDF models. TRIPLE can be viewed ... that TRIPLE does not have a fixed semantics for object-oriented features like classes...
  • QMT

  • Referenced in 19 articles [sw07137]
  • representation language MMT, we introduce the mathematical query language QMT: It combines simplicity, expressivity ... paradigms such as unification, semantic web, or XQuery style queries, and QMT queries can span...
  • gensim

  • Referenced in 13 articles [sw04081]
  • succinctly expressed in the new, semantic representation, and queried for topical similarity against other documents...
  • UnQL

  • Referenced in 9 articles [sw20018]
  • UnQL: a query language and algebra for semistructured data based on structural recursion. This paper ... basis of the syntax and semantics of query languages for semistructured data...
  • nSPARQL

  • Referenced in 13 articles [sw11895]
  • expressive enough to answer queries considering the semantics of the RDFS vocabulary by directly traversing...
  • Volcano

  • Referenced in 22 articles [sw30956]
  • imported into the query processing operators using support functions. The semantics of support functions ... choose-plan meta-operator supports dynamic query evaluation plans that allow delaying selected optimization decisions...
  • XPathLog

  • Referenced in 7 articles [sw15782]
  • XPathLog provides a clear, declarative language for querying and manipulating XML whose perspectives are especially ... data integration. In our characterization, the formal semantics is defined wrt. an edge-labeled graph ... based language for querying and manipulating XML data. The model-theoretic semantics of XPath-Logic ... also an equivalent answer-set semantics for evaluating XPathLog queries is given. In contrast...
  • RefactorErl

  • Referenced in 4 articles [sw13674]
  • available through a user-level semantic query language, that can assist Erlang developers in everyday...
  • Ontop

  • Referenced in 15 articles [sw22931]
  • supports answering SPARQL queries under the OWL 2 QL direct semantics entailment regime for data ... side, we show how any input SPARQL query, OWL 2 QL ontology and R2RML mappings...
  • SPARQ2L

  • Referenced in 6 articles [sw26494]
  • paths from a data graph. Often, such queries will specify certain constraints that qualifying results ... mandatory nodes. Unfortunately, most present day Semantic Web query languages including the current draft...
  • yOWL

  • Referenced in 2 articles [sw24081]
  • methods to store, integrate and query their knowledge. The semantic web initiative provides ... data mashup, to automated reasoning and semantic query answering. Based on yeast data obtained from...
  • FrameNet

  • Referenced in 5 articles [sw01965]
  • context, to enable e.g. better query answering based on “semantical” information. In this paper...
  • XDist

  • Referenced in 2 articles [sw13582]
  • XDist, we firstly use the semantic query model maximal lowest common ancestor (MAXLCA) to recognize ... returned results of a given query, and then these candidate results are ranked by BM25 ... under MAiP. Also the semantic model MAXLCA and the search engine XDist perform the best...
  • NITELIGHT

  • Referenced in 1 article [sw26462]
  • NITELIGHT: A Graphical Editor for SPARQL Queries. Query formulation is a key aspect of information ... usability of many semantic applications. A number of query languages, such as SPARQL, have been ... creation and editing of semantic queries. In this paper we present NITELIGHT, a graphical tool ... semantic query design. NITELIGHT uses a Visual Query Language (VQL), called vSPARQL, which provides graphical...
  • Qex

  • Referenced in 3 articles [sw09944]
  • given parameterized SQL query. The evaluation semantics of an SQL query is translated into...