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Cơ quản chủ quản: Brazilian Computer Society
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Computer Science (miscellaneous)
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Các bài báo tiêu biểu
A middleware platform to support river monitoring using wireless sensor networks
- 2011
Abstract Flooding is a critical global problem, which is growing more severe due
to the effects of climate change. This problem is particularly acute in the
state of São Paulo, Brazil, where flooding during the rainy season incurs
significant financial and human costs. Another critical problem associated with
flooding is the high level of pollution present in urban rivers. Efforts to
address these...
Empirical research in CSCW — a review of the ACM/CSCW conferences from 1998 to 2004
- 2007
Abstract This paper reviews all the 169 full papers published in the ACM/CSCW
conferences from 1998 to 2004. We classify the papers according to the type of
empirical research they report. The classes are evaluation of groupware,
description of work situations, hypothesis testing, bibliographic research, and
papers with no empirical research. We show that the field is in constant change,
that the ...
Ranking in collaboration networks using a group based metric
- 2011
Abstract Collaboration networks are social networks in which relationships
represent some kind of professional collaboration. The study of collaboration
networks can help identify individuals or groups that are important or
influential within a given community. We start this work by characterizing the
structural properties of the scientific collaboration network in the area of
Computer Science. In...
Partially labeled data stream classification with the semi-supervised K-associated graph
Tập 18 Số 4 - Trang 299-310 - 2012
Abstract Regular data classification techniques are based mainly on two strong
assumptions: (1) the existence of a reasonably large labeled set of data to be
used in training; and (2) future input data instances conform to the
distribution of the training set, i.e. data distribution is stationary along
time. However, in the case of data stream classification, both of the
aforementioned assumptions...
A graph clustering algorithm based on a clustering coefficient for weighted graphs
Tập 17 Số 1 - Trang 19-29 - 2011
Abstract Graph clustering is an important issue for several applications
associated with data analysis in graphs. However, the discovery of groups of
highly connected nodes that can represent clusters is not an easy task. Many
assumptions like the number of clusters and if the clusters are or not balanced,
may need to be made before the application of a clustering algorithm. Moreover,
without prev...
Redocumenting APIs with crowd knowledge: a coverage analysis based on question types
Tập 22 Số 1 - 2016
Feasible path planning for fixed-wing UAVs using seventh order Bézier curves
Tập 19 Số 2 - Trang 193-203 - 2013
Abstract This study presents a novel methodology for generating smooth feasible
paths for autonomous aerial vehicles in the three-dimensional space based on a
variation of the Spatial Quintic Pythagorean Hodographs curves. Generated paths
must satisfy three main constraints: (i) maximum curvature, (ii) maximum torsion
and (iii) maximum climb (or dive) angle. A given path is considered to be
feasib...
Testing tools for Android context-aware applications: a systematic mapping
- 2019
Abstract Context Mobile devices, such as smartphones, have increased their
capacity of information processing and sensors have been aggregated to their
hardware. Such sensors allow capturing information from the environment in which
they are introduced. As a result, mobile applications that use the environment
and user information to provide services or perform context-based actions are
increasing...
The impact of spatial data redundancy on SOLAP query performance
Tập 15 Số 2 - Trang 19-34 - 2009
Abstract Geographic Data Warehouses (GDW) are one of the main technologies used
in decision-making processes and spatial analysis, and the literature proposes
several conceptual and logical data models for GDW. However, little effort has
been focused on studying how spatial data redundancy affects SOLAP (Spatial
On-Line Analytical Processing) query performance over GDW. In this paper, we
investiga...
Automatically composing reusable software components for mobile devices
- 2008
AbstractProduct-line architectures (PLAs) are an effective mechanism for
facilitating the reuse of software components on different mobile devices.
Mobile applications are typically delivered to devices using over-the-air
provisioning services that allow a mobile phone to download and install software
over a cellular network connection. Current techniques for automating
product-line variant select...