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DeStager: feature guided in-situ data management in distributed deep memory hierarchies
Springer Science and Business Media LLC - - 2019
Maintenance of top-k materialized views
Springer Science and Business Media LLC - Tập 27 - Trang 95-137 - 2009
In this paper we present results on the problem of maintaining materialized
top-k views and provide results in two directions. The first problem we tackle
concerns the maintenance of top-k views in the presence of high deletion rates.
We provide a principled method that complements the inefficiency of the state of
the art independently of the statistical properties of the data and the
characterist...
In-memory parallelization of join queries over large ontological hierarchies
Springer Science and Business Media LLC - Tập 39 - Trang 545-582 - 2020
The Resource Description Framework (RDF) data model enables the construction of
knowledge graphs over various domains, using ontologies in order to encode
information about the domain, and simple statements in the form of
subject-predicate-object triples for data representation, facilitating the
interlinking and exchange of Web data. However, this simplicity comes with the
cost of having to execut...
Multi-model query languages: taming the variety of big data
Springer Science and Business Media LLC - - 2024
AbstractA critical issue in Big Data management is to address the variety of
data–data are produced by disparate sources, presented in various formats, and
hence inherently involves multiple data models. Multi-Model DataBases (MMDBs)
have emerged as a promising approach for dealing with this task as they are
capable of accommodating multi-model data in a single system and querying across
them with...
Extending a multi-set relational algebra to a parallel environment
Springer Science and Business Media LLC - - 1996
In-network data acquisition and replication in mobile sensor networks
Springer Science and Business Media LLC - Tập 29 - Trang 87-112 - 2010
This paper assumes a set of n mobile sensors that move in the Euclidean plane as
a swarm. Our objectives are to explore a given geographic region by detecting
and aggregating spatio-temporal events of interest and to store these events in
the network until the user requests them. Such a setting finds applications in
mobile environments where the user (i.e., the sink) is infrequently within
communi...
Data challenges of time domain astronomy
Springer Science and Business Media LLC - Tập 30 - Trang 371-384 - 2012
Astronomy has been at the forefront of the development of the techniques and
methodologies of data intensive science for over a decade with large sky surveys
and distributed efforts such as the Virtual Observatory. However, it faces a new
data deluge with the next generation of synoptic sky surveys which are opening
up the time domain for discovery and exploration. This brings both new
scientific ...
Algorithms and framework for computing 2-body statistics on GPUs
Springer Science and Business Media LLC - Tập 37 - Trang 587-622 - 2018
Various types of two-body statistics (2-BS) are regarded as essential components
of low-level data analysis in scientific database systems. In relational
algebraic terms, a 2-BS is essentially a Cartesian product between two datasets
(or two instances of the same dataset) followed by a user-defined aggregate. The
quadratic complexity of these computations hinders timely processing of data.
Use of ...
Managing big data experiments on smartphones
Springer Science and Business Media LLC - Tập 34 - Trang 33-64 - 2014
The explosive number of smartphones with ever growing sensing and computing
capabilities have brought a paradigm shift to many traditional domains of the
computing field. Re-programming smartphones and instrumenting them for
application testing and data gathering at scale is currently a tedious and
time-consuming process that poses significant logistical challenges. Next
generation smartphone appl...
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