Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Multi-tenant Pub/Sub Processing for Real-time Data Streams   Devices and sensors generate streams of data across a diversity of locations
and protocols. That data usually reaches a central platform that is used to
store and process the streams. Processing can be done in real time, with
transformations and enrichment happening on-the-fly, but it can also happen
after data is stored and organized in repositories. In the former case, stream
processing technologies are required to operate on the data; in the latter
batch analytics and queries are of common use.
  This paper introduces a runtime to dynamically construct data stream
processing topologies based on user-supplied code. These dynamic topologies are
built on-the-fly using a data subscription model defined by the applications
that consume data. Each user-defined processing unit is called a Service
Object. Every Service Object consumes input data streams and may produce output
streams that others can consume. The subscription-based programing model
enables multiple users to deploy their own data-processing services. The
runtime does the dynamic forwarding of data and execution of Service Objects
from different users. Data streams can originate in real-world devices or they
can be the outputs of Service Objects.

3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
17
The categories of this paper are: q-fin
37
The categories of this paper are: supr-con
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess