Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Umbrella: A Unified Software Defined Development Framework   The Northbound (NB) APIs that SDN controllers provide differ in terms of
architecture, syntax, naming convention, data resources, and usage. Using NB
APIs to write SDN applications makes each application dependent on the API of a
specific controller. To bring NB APIs from different vendors under one umbrella
and make programming of SDN applications independent of specific controllers,
we propose a unified software defined development framework that we call
Umbrella. This paper presents the key components of the software and reports
some preliminary results.

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The categories of this paper are: hep-ex
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The categories of this paper are: gr-qc
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The categories of this paper are: adap-org
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The categories of this paper are: patt-sol
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The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: solv-int
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The categories of this paper are: funct-an
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The categories of this paper are: math
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The categories of this paper are: dg-ga
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The categories of this paper are: physics
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The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
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The categories of this paper are: alg-geom
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat