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The Discrete Cosine Transform [PDF]
SIAM Review, 1999 In this paper the author derives the Discrete Cosine Transform (DCT) bases as eigenvectors of a symmetric second-difference matrix with certain boundary conditions. The type of boundary condition (Dirichlet or Neumann, centered at a meshpoint or a midpoint) determines the applications that are appropriate for each transform.
Gilbert Strang
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Multiscale Cosine Convolution Neural Network for Robust and Interpretable Epileptic EEG Detection [PDF]
BiosensorsThe accurate detection of epileptic seizures using an electroencephalogram (EEG) is essential for clinical diagnosis and reducing the burden on clinicians but remains challenging due to low detection performance and model interpretability. In this study,
Jiale Chen, Weidong Zhou, Guoyang Liu
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Starlikness Associated with Cosine Hyperbolic Function
Mathematics, 2020 The main contribution of this article is to define a family of starlike functions associated with a cosine hyperbolic function. We investigate convolution conditions, integral preserving properties, and coefficient sufficiency criteria for this family ...
Abdullah Alotaibi +2 more
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Cosine Similarity Measure of Interval Valued Neutrosophic Sets [PDF]
Neutrosophic Sets and Systems, 2014 In this paper, we define a new cosine similarity between two interval valued neutrosophic sets based on Bhattacharya’s distance [19]. The notions of interval valued neutrosophic sets (IVNS, for short) will be used as vector representations in 3D-vector ...
Said Broumi, Florentin Smarandache
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A new family of alpha power-G using cosine function with applications and regression modeling [PDF]
Scientific ReportsThis paper discusses a novel technique to creating distribution families by combining the transformation of alpha power and the cosine function. The proposed technique have been named the cosine alpha power-generated family.
Amani S. Alghamdi, Shatha F. ALoufi
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New fractional cosine transform and its application
Tongxin xuebao, 2005 A new Fractional Cosine Transform was proposed. It was a weighted combination of the first two integer-order cosine transforms of the original signal, and it has the same eigenvectors as the cosine transform’s, but the different eigenvalues which have a ...
ZHANG Yong-liang, ZENG Yi-cheng
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Efficient Evaluation of Matrix Polynomials beyond the Paterson–Stockmeyer Method
Mathematics, 2021 Recently, two general methods for evaluating matrix polynomials requiring one matrix product less than the Paterson–Stockmeyer method were proposed, where the cost of evaluating a matrix polynomial is given asymptotically by the total number of matrix ...
Jorge Sastre, Javier Ibáñez
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MFCosface: A Masked-Face Recognition Algorithm Based on Large Margin Cosine Loss
Applied Sciences, 2021 The world today is being hit by COVID-19. As opposed to fingerprints and ID cards, facial recognition technology can effectively prevent the spread of viruses in public places because it does not require contact with specific sensors.
Hongxia Deng +5 more
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Defining Semantically Close Words of Kazakh Language with Distributed System Apache Spark
Big Data and Cognitive Computing, 2023 This work focuses on determining semantically close words and using semantic similarity in general in order to improve performance in information retrieval tasks.
Dauren Ayazbayev +3 more
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Journal of Environmental Engineering and Landscape Management, 2021 The drainage gates have been controlled for desalination under normal conditions and flood defense in Saemangeum basin, Korea. Recently, it became an issue that the gates have been opened not to deteriorate water quality in the lake.
Hyung Ju Yoo +3 more
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