Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scaling Up Knowledge Graph Creation to Large and Heterogeneous Data
  Sources   RDF knowledge graphs (KG) are powerful data structures to represent factual
statements created from heterogeneous data sources. KG creation is laborious,
and demands data management techniques to be executed efficiently. This paper
tackles the problem of the automatic generation of KG creation processes
declaratively specified; it proposes techniques for planning and transforming
heterogeneous data into RDF triples following mapping assertions specified in
the RDF Mapping Language (RML). Given a set of mapping assertions, the planner
provides an optimized execution plan by partitioning and scheduling the
execution of the assertions. First, the planner assesses an optimized number of
partitions considering the number of data sources, type of mapping assertions,
and the associations between different assertions. After providing a list of
partitions and assertions that belong to each partition, the planner determines
their execution order. A greedy algorithm is implemented to generate the
partitions' bushy tree execution plan. Bushy tree plans are translated into
operating system commands that guide the execution of the partitions of the
mapping assertions in the order indicated by the bushy tree. The proposed
optimization approach is evaluated over state-of-the-art RML-compliant engines
and existing benchmarks of data sources and RML triples maps. Our experimental
results suggest that the performance of the studied engines can be considerably
improved, particularly in a complex setting with numerous triples maps and data
sources. As a result, engines that usually time in complex cases out can, if
not entirely execute all the assertions, still produce a portion of the KG.

16
The categories of this paper are: stat
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
22
The categories of this paper are: chao-dyn
8
The categories of this paper are: hep-ex
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph
31
The categories of this paper are: ao-sci
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The categories of this paper are: acc-phys
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The categories of this paper are: quant-ph
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
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The categories of this paper are: math
27
The categories of this paper are: comp-gas