Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SemTK: An Ontology-first, Open Source Semantic Toolkit for Managing and
  Querying Knowledge Graphs   The relatively recent adoption of Knowledge Graphs as an enabling technology
in multiple high-profile artificial intelligence and cognitive applications has
led to growing interest in the Semantic Web technology stack. Many
semantics-related tools, however, are focused on serving experts with a deep
understanding of semantic technologies. For example, triplification of
relational data is available but there is no open source tool that allows a
user unfamiliar with OWL/RDF to import data into a semantic triple store in an
intuitive manner. Further, many tools require users to have a working
understanding of SPARQL to query data. Casual users interested in benefiting
from the power of Knowledge Graphs have few tools available for exploring,
querying, and managing semantic data. We present SemTK, the Semantics Toolkit,
a user-friendly suite of tools that allow both expert and non-expert semantics
users convenient ingestion of relational data, simplified query generation, and
more. The exploration of ontologies and instance data is performed through
SPARQLgraph, an intuitive web-based user interface in SemTK understandable and
navigable by a lay user. The open source version of SemTK is available at
http://semtk.research.ge.com

23
The categories of this paper are: solv-int
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
28
The categories of this paper are: alg-geom
6
The categories of this paper are: astro-ph
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
29
The categories of this paper are: funct-an
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th