Results 11 to 20 of about 87,616 (237)

Hierarchical Cache-Aided Linear Function Retrieval with Security and Privacy Constraints

CoRR, 2022
The hierarchical caching system where a server connects with multiple mirror sites, each connecting with a distinct set of users, and both the mirror sites and users are equipped with caching memories has been widely studied. However all the existing works focus on single file retrieval, i.e., each user requests one file, and ignore the security and ...
Yun Kong, Youlong Wu, Minquan Cheng
openaire   +3 more sources

Robust, Secure, and Private Cache-Aided Scalar Linear Function Retrieval From Distributed System With Blind and Adversarial Servers

IEEE Transactions on Information Theory
In this work, a distributed server system composed of multiple servers that holds some coded files and multiple users that are interested in retrieving the linear functions of the files is investigated, where the servers are robust, blind and adversarial in the sense that any $J$ servers can together recover all files, while any $I$ colluding servers ...
Qifa Yan, Zhengchun Zhou, Xiaohu Tang 0004   +2 more
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Similarity Sorting Method for Retrieval Results of Linear Algebra Formula [PDF]

Jisuanji gongcheng, 2018
Compared with the general mathematical formula,linear algebra formula has more complex structure and richer syntax and semantics,so it is more difficult to achieve its retrieval.Through the analysis of linear algebraic retrieval,several matching modes of
SUN Mengying,TIAN Xuedong
doaj   +1 more source

Linear phase retrieval for real-time adaptive optics [PDF]

Journal of the European Optical Society-Rapid Publications, 2013
We developed a fast phase retrieval algorithm that is suitable for real-time applications such as adaptive optics. The phase retrieval model is developed by linearising the pupil function in the approximation of small aberrations and is valid for low-NA ...
Polo A., Haber A., Pereira S. F., Verhaegen M., Urbach H. P.   +4 more
doaj   +1 more source

A Thermal Infrared Land Surface Temperature Retrieval Algorithm for Thin Cirrus Skies Using Cirrus Optical Properties

IEEE Access, 2021
To acquire daytime land surface temperature (LST) in thin cirrus cloudy skies, we have developed a three-channel LST retrieval algorithm based on a widely used two-channel LST retrieval algorithm for the clear-sky conditions.
Xiwei Fan, Gaozhong Nie, Yaohui Liu, Li Ni   +3 more
doaj   +1 more source

Reflected ray retrieval from radio occultation data using radio holographic filtering of wave fields in ray space [PDF]

Atmospheric Measurement Techniques, 2018
Linear and non-linear representations of wave fields constitute the basis of modern algorithms for analysis of radio occultation (RO) data. Linear representations are implemented by Fourier Integral Operators, which allow for high-resolution retrieval
M. E. Gorbunov, M. E. Gorbunov, E. Cardellach, E. Cardellach, K. B. Lauritsen   +4 more
doaj   +1 more source

Linearization of the effect of slit function changes for improving OMI ozone profile retrievals [PDF]

Atmospheric Measurement Techniques, 2019
Abstract. We introduce a method that reduces the spectral fit residuals caused by the slit function errors in an optimal estimation based spectral fitting process to improve ozone profile retrievals from the Ozone Monitoring Instrument (OMI) ultraviolet measurements (270–330 nm).
Juseon Bak, Xiong Liu, Kang Sun, Kelly Chance, Jae-Hwan Kim   +4 more
openaire   +4 more sources

Regret Theory-Based Case-Retrieval Method with Multiple Heterogeneous Attributes and Incomplete Weight Information

International Journal of Computational Intelligence Systems, 2021
Case retrieval is a crucial step in case-based reasoning (CBR), which is related to decision-making effectiveness. To improve decision support, CBR usually calculates case similarity and evaluates utility.
Kai Zhang, Ying-Ming Wang, Jing Zheng
doaj   +1 more source

A COMPARISON STUDY OF DIFFERENT KERNEL FUNCTIONS FOR SVM-BASED CLASSIFICATION OF MULTI-TEMPORAL POLARIMETRY SAR DATA [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2014
In this paper, a framework is developed based on Support Vector Machines (SVM) for crop classification using polarimetric features extracted from multi-temporal Synthetic Aperture Radar (SAR) imageries.
B. Yekkehkhany, A. Safari, S. Homayouni, M. Hasanlou   +3 more
doaj   +1 more source

Femtosecond-Laser-Pulse Characterization and Optimization for CARS Microscopy. [PDF]

PLoS ONE, 2016
We present a simple method and its experimental implementation to determine the pulse durations and linear chirps of the pump-and-probe pulse and the Stokes pulse in a coherent anti-Stokes Raman scattering microscope at sample level without additional ...
Vincenzo Piazza, Giuseppe de Vito, Elmira Farrokhtakin, Gianni Ciofani, Virgilio Mattoli   +4 more
doaj   +1 more source