Accelerated failure-time model with weighted least-squares estimation: application on survival of HIV positives [PDF]
Archives of Public Health, 2021 Background Survival analysis is the most appropriate method of analysis for time-to-event data. The classical accelerated failure-time model is a more powerful and interpretable model than the Cox proportional hazards model, provided that model imposed ...
Yesuf Abdela Mustefa, Ding-Geng Chen
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Fusion of Land-Based and Satellite-Based Localization Using Constrained Weighted Least Squares [PDF]
SensorsCombining multiple devices for localization has important applications in the military field. This paper exploits the land-based short-wave platforms and satellites for fusion localization.
Paihang Zhao +4 more
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An INS/WiFi Indoor Localization System Based on the Weighted Least Squares [PDF]
Sensors, 2018 For smartphone indoor localization, an INS/WiFi hybrid localization system is proposed in this paper. Acceleration and angular velocity are used to estimate step lengths and headings. The problem with INS is that positioning errors grow with time.
Jian Chen +4 more
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Weighted Least Squares Techniques for Improved Received Signal Strength Based Localization [PDF]
Sensors, 2011 The practical deployment of wireless positioning systems requires minimizing the calibration procedures while improving the location estimation accuracy.
José R. Casar +2 more
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Mangrove Extraction Algorithm Based on Orthogonal Matching Filter-Weighted Least Squares [PDF]
SensorsHigh-precision extraction of mangrove areas is a crucial prerequisite for estimating mangrove area as well as for regional planning and ecological protection.
Yongze Li +4 more
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Time Difference of Arrival (TDoA) Localization Combining Weighted Least Squares and Firefly Algorithm [PDF]
Sensors, 2019 Time difference of arrival (TDoA) based on a group of sensor nodes with known locations has been widely used to locate targets. Two-step weighted least squares (TSWLS), constrained weighted least squares (CWLS), and Newton−Raphson (NR) iteration ...
Peng Wu +5 more
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Determination of Lateral Modulation Apodization Functions Using a Regularized, Weighted Least Squares Estimation [PDF]
International Journal of Biomedical Imaging, 2010 Recently, work in this group has focused on the lateral cosine modulation method (LCM) which can be used for next-generation ultrasound (US) echo imaging and tissue displacement vector/strain tensor measurements (blood, soft tissues, etc.). For instance,
Chikayoshi Sumi
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Social network user geolocating method based on weighted least squares
网络与信息安全学报, 2022 When providing location-based dating and other location-based services, social networks will confuse the displayed user distance text to protect the user’s location privacy.In order to verify whether the current location confusion mechanism adopted by ...
Wenqi SHI, Xiangyang LUO, Jiashan GUO
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Markdown Optimization with Generalized Weighted Least Squares Estimation
International Journal of Computational Intelligence Systems, 2022 Retailers increasingly apply price markdowns for their seasonal products. Efficiency of these markdown applications is driven by the accuracy of empirical models, especially toward the end of a selling season.
Mustafa Hekimoğlu
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Resolving redundancy through a weighted damped least-squares solution [PDF]
Modeling, Identification and Control, 1993 Singularity robust redundancy resolution with task priority can be implemented using the extended Jacobian technique with weighted damped least-squares.
Jan R. Sagli +2 more
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