In order to make SPARQL queries more accessible to users, we have developed the visual
query language QueryVOWL. It defines SPARQL map**s for graphical elements of the …

The Semantic Web, which is intended to establish a machine-understandable Web, is
currently changing from being an emerging trend to a technology used in complex real …

The proliferation of knowledge-sharing communities and the advances in information
extraction have enabled the construction of large knowledge bases using the RDF data …

SPARQL is currently the major query language for the Semantic Web. However, writing
SPARQL queries is not an easy task and requires some understanding of technologies like …

One key driver of the Linked Data paradigm is the ability to lift data graphs from legacy
systems by employing various adapters and RDFizers (eg, D2RQ for relational databases …

With the adoption of Nepomuk as an organic part of KDE the semantic desktop became a
reality to a great number of users and is employed by a growing number of applications …

SparqlFilterFlow provides a visual interface for the composition of SPARQL queries, in
particular SELECT and ASK queries. It is based on the intuitive and empirically well-founded …

The Cancer Genome Atlas (TCGA) is a multidisciplinary, multi-institutional effort to
characterize several types of cancer. Datasets from biomedical domains such as TCGA …

Purpose–This paper aims to present a collaborative mashup platform for dynamic
integration of heterogeneous data sources. The platform encourages sharing and connects …

We present ANGIE, a system that can answer user queries by combining knowledge from a
local database with knowledge retrieved from Web services. If a user poses a query that …