Results 1 to 10 of about 216,614 (289)
Three-dimensional Point Cloud Model Segmentation Based on Significance and Weak Convexity [PDF]
Jisuanji gongcheng, 2018 The existing three-dimensional point cloud model segmentation algorithms cannot segment large components and small components at the same time.Aiming at this problem,in this paper,a segmentation method is proposed based on the significance and weak ...
ZHENG Lele,HAN Huiyan,HAN Xie
doaj +1 more source
Facial soft tissue convexity changes [PDF]
Al-Rafidain Dental Journal, 2007 Aims: To find the soft tissue changes of the total facial convexity, facial convexity and nasolabial convexity among four age groups. Materials and Methods: The studying sample subjects included 48, 41, 50 and 44 individuals of age 11, 12, 13 and 14 ...
Hussain A Obaidi, Manar Y Abdul–Qadir
doaj +1 more source
Seed Morphological Properties Related to Taxonomy in Silene L. Species
Taxonomy, 2022 Silene taxonomy, traditionally based on morphological characteristics, is now driven by DNA sequence analysis. While the usefulness of both morphological and molecular methods remains undisputed, there is an interest in the identification of the ...
José Javier Martín-Gómez +5 more
doaj +1 more source
A topological model for partial equivariance in deep learning and data analysis
Frontiers in Artificial Intelligence, 2023 In this article, we propose a topological model to encode partial equivariance in neural networks. To this end, we introduce a class of operators, called P-GENEOs, that change data expressed by measurements, respecting the action of certain sets of ...
Lucia Ferrari +3 more
doaj +1 more source
Damped Newton Stochastic Gradient Descent Method for Neural Networks Training
Mathematics, 2021 First-order methods such as stochastic gradient descent (SGD) have recently become popular optimization methods to train deep neural networks (DNNs) for good generalization; however, they need a long training time.
Jingcheng Zhou +3 more
doaj +1 more source
Calculation of certain bonds duration on the financial market of Bosnia and Herzegovina [PDF]
Bankarstvo, 2014 Duration is the main measure of price sensitivity which is used on the bond market. It indicates how much the bond price would change under the impact of change in the market interest rates.
Alihodžić Almir
doaj +1 more source
Mathematics, 2021 This paper is devoted to introducing a nonlinear reconstruction operator, the piecewise polynomial harmonic (PPH), on nonuniform grids. We define this operator and we study its main properties, such as its reproduction of second-degree polynomials ...
Pedro Ortiz, Juan Carlos Trillo
doaj +1 more source
Clustering Methods over the Tropical Projective Torus
Mathematics, 2023 In this paper, we propose clustering methods for use on data described as tropically convex. Our approach is similar to clustering methods used in the Euclidean space, where we identify groupings of similar observations using tropical analogs of K-means ...
David Barnhill, Ruriko Yoshida
doaj +1 more source
Convexity-Preserving Rational Cubic Zipper Fractal Interpolation Curves and Surfaces
Mathematical and Computational Applications, 2023 A class of zipper fractal functions is more versatile than corresponding classes of traditional and fractal interpolants due to a binary vector called a signature.
Vijay, Arya Kumar Bedabrata Chand
doaj +1 more source
On the solvability of a class of nonlinear Hammerstein integral equations on the semiaxis [PDF]
Известия Саратовского университета. Новая серия: Математика. Механика. Информатика, 2022 The paper studies a class of nonlinear integral equations on the semiaxis with a non-compact Hammerstein operator. It is assumed that the kernel of the equation decreases exponentially on the positive part of the number axis. Equations of this kind arise
Khachatryan, Khachatur Agavardovich +1 more
doaj +1 more source