Results 31 to 40 of about 2,028,161 (229)
Two-stage re-estimation adaptive design: a simulation study
Epidemiology, Biostatistics and Public Health, 2013 Background: adaptive clinical trial design has been proposed as a promising new approach to improve the drug discovery process. Among the many options available, adaptive sample size re-estimation is of great interest mainly because of its ability to ...
Francesca Galli, Luigi Mariani
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Millimeter-Wave Based Localization Using a Two-Stage Channel Estimation Relying on Few-Bit ADCs
IEEE Open Journal of the Communications Society, 2021 Benefiting from the high resolution in beamspace, millimeter wave (mmwave) communication has been regarded as a high-accuracy localization solution, where the location information is embedded in the channel via angle and time delay, for example.
Kunlun Li +2 more
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Two-Stage Maximum Score Estimator
, 2020 This paper considers the asymptotic theory of a semiparametric M-estimator that is generally applicable to models that satisfy a monotonicity condition in one or several parametric indexes. We call the estimator two-stage maximum score (TSMS) estimator since our estimator involves a first-stage nonparametric regression when applied to the binary choice
Gao, Wayne Yuan, Xu, Sheng, Xu, Kan
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A Novel Two-Stage Illumination Estimation Framework for Expression Recognition
The Scientific World Journal, 2014 One of the critical issues for facial expression recognition is to eliminate the negative effect caused by variant poses and illuminations. In this paper a two-stage illumination estimation framework is proposed based on three-dimensional representative ...
Zheng Zhang, Guozhi Song, Jigang Wu
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Crop Journal, 2022 Accurate, efficient, and timely yield estimation is critical for crop variety breeding and management optimization. However, the contributions of proximal sensing data characteristics (spectral, temporal, and spatial) to yield estimation have not been ...
Qing Li +10 more
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Two-Stage Limited-Information Estimation for Structural Equation Models of Round-Robin Variables
StatsWe propose and demonstrate a new two-stage maximum likelihood estimator for parameters of a social relations structural equation model (SR-SEM) using estimated summary statistics (Σ^) as data, as well as uncertainty about Σ^ to obtain robust inferential ...
Terrence D. Jorgensen +2 more
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Sensors, 2017 This paper addresses the two-dimensional (2D) direction-of-arrival (DOA) estimation problem with two novel methods for mixed noncircular and circular signals.
Heping Shi +3 more
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BMC Medical Research Methodology, 2021 Background The use of auxiliary variables with maximum likelihood parameter estimation for surveys that miss data by design is not a widespread approach, despite its documented improved efficiency over traditional approaches that deploy sampling weights.
George Vamvakas +2 more
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IEEE Access, 2018 Rolling bearing is a key component of rotating machinery, and its remaining useful life (RUL) estimation is also a critical technique in prognostics health management activities.
Mingquan Qiu +3 more
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Mathematics, 2021 The current study examines the structural relationship between the academic performance exam scores of Korean middle school students and their after-school exercise hours.
Kyulee Shin, Sukkyung You, Mihye Kim
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