Browsing Data Science (DS) by Title
Now showing items 1-20 of 142
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A decision tree to assess short-term mortality after an emergency department visit for an exacerbation of COPD: A cohort study
(Respiratory Research, 2015-12-31)Background: Creating an easy-to-use instrument to identify predictors of short-term (30/60-day) mortality after an exacerbation of chronic obstructive pulmonary disease (eCOPD) could help clinicians choose specific measures ... -
A modeling framework for optimizing the flow-level scheduling with time-varying channels
(Performance Evaluation, 2010-12-31)We introduce a comprehensive modeling framework for the problem of scheduling a finite number of finite-length jobs where the available service rate is time-varying. The main motivation comes from wireless data networks ... -
A nearly-optimal index rule for scheduling of users with abandonment
(Proceedings - IEEE INFOCOM, 2011-12-31)We analyze a comprehensive model for multi-class job scheduling accounting for user abandonment, with the objective of minimizing the total discounted or time-average sum of linear holding costs and abandonment penalties. ... -
Acute toxicity, bioaccumulation and effects of dietary 1 transfer of silver from brine 2 shrimps exposed to PVP/PEI-coated silver nanoparticles to zebrafish
(Comparative Biochemistry and Physiology - part C: Toxicology & Pharmacology, 2017-03-18)The extensive use and release to the aquatic environment of silver nanoparticles (NPs) could lead to their incorporation into the food web. Brine shrimp larvae of 24 h showed low sensitivity to the exposure to PVP/PEI-coated ... -
Aggregated outputs by linear models: An application on marine litter beaching prediction
(Information Sciences, 2019-01-01)In regression, a predictive model which is able to anticipate the output of a new case is learnt from a set of previous examples. The output or response value of these examples used for model training is known. When learning ... -
An empirical study on collective intelligence algorithms for video games problem-solving
(Computing and Informatics, 2015-12-31)Computational intelligence (CI), such as evolutionary computation or swarm intelligence methods, is a set of bio-inspired algorithms that have been widely used to solve problems in areas like planning, scheduling or ... -
Analysis of a hybrid Genetic Simulated Annealing strategy applied in multi-objective optimization of orbital maneuvers
(IEEE Aerospace and Electronic Systems Magazine, 2017-03-27)Optimization of orbital maneuvers is one of the main issues in conceptual and preliminary design of spacecraft in different space missions. The main issue in optimization of high-thrust orbit transfers is that the common ... -
Anxiety and depressive symptoms are related to core symptoms, general helath outcome and medical comorbidities in eating disorders
(European Eating Disorders Review, 2019-04)Objective: The goal of this study is to identify potential factors that have a significant effect on anxiety and depression of patients with eating disorders (ED) using the beta-binomial regression (BBR) approach on a broad ... -
Are the artificially generated instances uniform in terms of difficulty?
(IEEE Congress on Evolutionary Computation, 2018-06)In the field of evolutionary computation, it is usual to generate artificial benchmarks of instances that are used as a test-bed to determine the performance of the algorithms at hand. In this context, a recent work on ... -
Asymptotically optimal parallel resource assignment with interference
(Queueing Systems, 2010-12-31)Motivated by scheduling in cellular wireless networks and resource allocation in computer systems, we study a service facility with two classes of users having heterogeneous service requirement distributions. The aggregate ... -
Bayesian inference for algorithm ranking analysis
(GECCO 2018 Companion - Proceedings of the 2018 Genetic and Evolutionary Computation Conference Companion 6 July 2018, Pages 324-325, 2018-08-30)The statistical assessment of the empirical comparison of algorithms is an essential step in heuristic optimization. Classically, researchers have relied on the use of statistical tests. However, recently, concerns about ... -
Bayesian nonparametric inference for the covariate-adjusted ROC curve
(2018-05-30)Accurate diagnosis of disease is of fundamental importance in clinical practice and medical research. Before a medical diagnostic test is routinely used in practice, its ability to distinguish between diseased and nondiseased ... -
Belief Condensation Filtering For Rssi-Based State Estimation In Indoor Localization
(2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2019)Recent advancements in signal processing and communication systems have resulted in evolution of an intriguing concept referred to as Internet of Things (IoT). By embracing the IoT evolution, there has been a surge of ... -
A beta-binomial mixed-effects model approach for analysing longitudinal discrete and bounded outcomes
(Biometrical Journal, 2018-05)Patient-reported outcomes (PROs) are currently being increasingly used as primary outcome measures in observational and experimental studies since they inform clinicians and researchers about the health-status of patients ... -
Bootstrap-based procedures for inference in nonparametric receiver-operating characteristic curve regression analysis
(Statistical Methods in Medical Research, 2017)Prior to using a diagnostic test in a routine clinical setting, the rigorous evaluation of its diagnostic accuracy is essential. The receiver-operating characteristic curve is the measure of accuracy most widely used for ... -
Bootstrap-based procedures for inference in nonparametric ROC regression analysis
(2016-06-30)Before the use of a diagnostic test in a routine clinical setting, the rigorous evaluation of its diagnostic accuracy is an essential step. The receiver operating characteristic (ROC) curve is the measure of accuracy most ... -
Calibration Model Maintenance in Melamine Resin Production: Integrating Drift Detection, Smart Sample Selection and Model Adaptation
(Analytica Chimica Acta, 2018)The physico-chemical properties of Melamine Formaldehyde (MF) based thermosets are largely influenced by the degree of polymerization (DP) in the underlying resin. On-line supervision of the turbidity point by means of ... -
Cancer incidence among children and young adults who have undergone x-ray guided cardiac catheterization procedures
(European Journal of Epidemiology, 2018-01-18)Children and young adults with heart disease appear to be at increased risk of developing cancer, although the reasons for this are unclear. A cohort of 11,270 individuals, who underwent cardiac catheterizations while aged ... -
CCN interest forwarding strategy as Multi-Armed Bandit model with delays
(NetGCoop 2012 - 6th International Conference on Network Games, Control and Optimization, 2012-12-31)We consider Content Centric Network (CCN) interest forwarding problem as a Multi-Armed Bandit (MAB) problem with delays. We investigate the transient behaviour of the ε-greedy, tuned ε-greedy and Upper Confidence Bound ... -
Chronic obstructive pulmonary disease subtypes. transitions over time
(PLoS ONE, 2016-10-30)Background Although subtypes of chronic obstructive pulmonary disease are recognized, it is unknown what happens to these subtypes over time. Our objectives were to assess the stability of cluster-based subtypes in patients ...