Results 41 to 50 of about 775,359 (318)

Federated Learning Based on Kernel Local Differential Privacy and Low Gradient Sampling

open access: yesIEEE Access
Federated learning that is an approach to addressing the “data silo” problem in a collaborative fashion may face the risk of data leakage in real-world contexts.
Yi Chen, Dan Chen, Niansheng Tang
doaj   +1 more source

Music Genre and Emotion Recognition Using Gaussian Processes

open access: yesIEEE Access, 2014
Gaussian Processes (GPs) are Bayesian nonparametric models that are becoming more and more popular for their superior capabilities to capture highly nonlinear data relationships in various tasks, such as dimensionality reduction, time series analysis ...
Konstantin Markov, Tomoko Matsui
doaj   +1 more source

Modeling statistical metadata

open access: yesProceedings Thirteenth International Conference on Scientific and Statistical Database Management. SSDBM 2001, 2002
An object oriented statistical metadata model is presented, which can be used in building information systems providing metadata-guided, statistical data processing features. The semantics of the model are analyzed and a set of operators (transformations) is proposed that allows for the automatic manipulation of both data and metadata at the same time.
Haralambos Papageorgiou   +4 more
openaire   +2 more sources

Why estimands are needed to define treatment effects in clinical trials

open access: yesBMC Medicine, 2023
Background The estimand for a clinical trial is a precise definition of the treatment effect to be estimated. Traditionally, estimates of treatment effects are based on either an ITT analysis or a per-protocol analysis.
Oliver N. Keene   +4 more
doaj   +1 more source

Observation-based correction of dynamical models using thermostats [PDF]

open access: yes, 2017
Models used in simulation may give accurate short-term trajectories but distort long-term (statistical) properties. In this work, we augment a given approximate model with a control law (a ‘thermostat’) that gently perturbs the dynamical system to target
Leimkuhler, Benedict   +6 more
core   +1 more source

Penalized Exponentially Tilted Likelihood for Growing Dimensional Models with Missing Data

open access: yesEntropy
This paper develops a penalized exponentially tilted (ET) likelihood to simultaneously estimate unknown parameters and select variables for growing dimensional models with missing response at random.
Xiaoming Sha   +2 more
doaj   +1 more source

Establishing statistical foundations early : data modeling with young learners [PDF]

open access: yes, 2014
This paper addresses research from a three-year longitudinal study that engaged children in data modeling experiences from the beginning school year through to third year (6-8 years). A data modeling approach to statistical development differs in several
English, Lyn D.
core  

The effects of clinical and statistical heterogeneity on the predictive values of results from meta-analyses [PDF]

open access: yes, 2014
Variance between studies in a meta-analysis will exist. This heterogeneity may be of clinical, methodological or statistical origin. The last of these is quantified by the I(2) -statistic. We investigated, using simulated studies, the accuracy of I(2) in
Bootsma, M.C.   +11 more
core   +1 more source

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola   +4 more
wiley   +1 more source

Analysis and achievement for fractional optimal control of Hepatitis B with Caputo operator

open access: yesAlexandria Engineering Journal, 2023
Deciphering the effect of long memory on dynamic behavior is important for controlling disease transmission. Employing fractional order calculus, here, we propose a model with Caputo operator to emphasize the regulation effect of the long memory on the ...
Jingwen Zhang   +3 more
doaj   +1 more source

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