Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scalable Ontological Query Processing over Semantically Integrated Life
  Science Datasets using MapReduce   To address the requirement of enabling a comprehensive perspective of
life-sciences data, Semantic Web technologies have been adopted for
standardized representations of data and linkages between data. This has
resulted in data warehouses such as UniProt, Bio2RDF, and Chem2Bio2RDF, that
integrate different kinds of biological and chemical data using ontologies.
Unfortunately, the ability to process queries over ontologically-integrated
collections remains a challenge, particularly when data is large. The reason is
that besides the traditional challenges of processing graph-structured data,
complete query answering requires inferencing to explicate implicitly
represented facts. Since traditional inferencing techniques like forward
chaining are difficult to scale up, and need to be repeated each time data is
updated, recent focus has been on inferencing that can be supported using
database technologies via query rewriting. However, due to the richness of most
biomedical ontologies relative to other domain ontologies, the queries
resulting from the query rewriting technique are often more complex than
existing query optimization techniques can cope with. This is particularly so
when using the emerging class of cloud data processing platforms for big data
processing due to some additional overhead which they introduce. In this paper,
we present an approach for dealing such complex queries on big data using
MapReduce, along with an evaluation on existing real-world datasets and
benchmark queries.

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The categories of this paper are: hep-ex
15
The categories of this paper are: nucl-ex
37
The categories of this paper are: supr-con
3
The categories of this paper are: physics
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
0
The categories of this paper are: hep-ph
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
21
The categories of this paper are: adap-org
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
25
The categories of this paper are: patt-sol