Characteristic Functions of L1-Spherical and L1-Norm Symmetric Distributions and Their Applications
نویسندگان
چکیده
منابع مشابه
Characteristic Functions of L1-Spherical and L1-Norm Symmetric Distributions and Their Applications
In this article, by employing the surface integral and other useful formulas related to multidimensional integrals, we obtain the characteristic functions (c.f.'s) for L 1-spherical and L 1-norm symmetric distributions. These c.f.'s can be used to derive the probability density functions (p.d.f.'s) of linear combinations of variables. We shall show that this gives a uniied approach to the treat...
متن کاملMultivariate Archimedean Copulas, d-monotone Functions and l1-norm Symmetric Distributions
It is shown that a necessary and sufficient condition for an Archimedean copula generator to generate a d-dimensional copula is that the generator is a d-monotone function. The class of d-dimensional Archimedean copulas is shown to coincide with the class of survival copulas of d-dimensional l1-norm symmetric distributions that place no point mass at the origin. The d-monotone Archimedean copul...
متن کاملacquisition of noun modifiers by persian(l1) learners of english (l2) and french (l3)
توجه این تحقیق بر موضوع یادگیری زبان سوم بوده ونقش زبان های پیشین در یادگیری زبان جدید را بررسی میکند. بدین منظور، بعضی از ساختارهای توصیف کننده های اسمی همانند اسم بعد از اعداد جمع و صفت های شمارشی، صفات توصیفی،و صفات ملکی انتخاب شدند. سه زبان مورد بررسی فارسی (زبان اول)، انگلیسی (زبان دوم)، و فرانسه (زبان سوم) بودند. هدف، تعیین میزان مراجعه زبان آموزان به زبان های اول و دومشان در یادگیری ساخت...
15 صفحه اولL1-norm Kernel PCA
We present the first model and algorithm for L1-norm kernel PCA. While L2-norm kernel PCA has been widely studied, there has been no work on L1-norm kernel PCA. For this non-convex and non-smooth problem, we offer geometric understandings through reformulations and present an efficient algorithm where the kernel trick is applicable. To attest the efficiency of the algorithm, we provide a conver...
متن کاملL1-Norm Quantile Regression
Classical regression methods have focused mainly on estimating conditional mean functions. In recent years, however, quantile regression has emerged as a comprehensive approach to the statistical analysis of response models. In this article we consider the L1-norm (LASSO) regularized quantile regression (L1-norm QR), which uses the sum of the absolute values of the coefficients as the penalty. ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Multivariate Analysis
سال: 2001
ISSN: 0047-259X
DOI: 10.1006/jmva.2000.1910