Density estimation using entropy maximization for semi-continuous data

نویسندگان

چکیده

Semi-continuous data comes from a distribution that is mixture of the point mass at zero and continuous with support on positive real line. Such appear in several real-life situations like blind signal separation problems, modeling loss finance insurance, sales consumer goods, daily precipitation data, to name few. In this paper, we present novel algorithm estimate density function for semi-continuous using principle maximum entropy. Unlike existing methods literature, our provides consistent true entropy considers both discrete parts simultaneously. Using simulations, show produced by has significantly less bias compared methods. An application rainfall provided.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Probability Density Estimation Using Entropy Maximization

We propose a method for estimating probability density functions and conditional density functions by training on data produced by such distributions. The algorithm employs new stochastic variables that amount to coding of the input, using a principle of entropy maximization. It is shown to be closely related to the maximum likelihood approach. The encoding step of the algorithm provides an est...

متن کامل

A Understanding Cardinality Estimation using Entropy Maximization

Cardinality estimation is the process of estimating the number of tuples returned by a query. In relational database query optimization, cardinality estimates are key statistics used by the optimizer to choose an (expected) lowest cost plan. As a result of the importance of the problem, there are many sources of statistical information available to the optimizer, e.g., query feedback records [S...

متن کامل

Maximum Entropy Density Estimation with Incomplete Data

We propose a natural generalization of Regularized Maximum Entropy Density Estimation (maxent) to handle input data with unknown values. While standard approaches to handling missing data usually involve estimating the actual unknown values, then using the estimated, complete data as input, our method avoids the two-step process and handles unknown values directly in the maximum entropy formula...

متن کامل

Bayesian density estimation from grouped continuous data

Grouped data occur frequently in practice, either because of limited resolution of instruments, or because data have been summarized in relatively wide bins. A combination of the composite link model with roughness penalties is proposed to estimate smooth densities from such data in a Bayesian framework. A simulation study is used to evaluate the performances of the strategy in the estimation o...

متن کامل

Entropy operator for continuous dynamical systems of finite topological entropy

In this paper we introduce the concept of entropy operator for continuous systems of finite topological entropy. It is shown that it generates the Kolmogorov entropy as a special case. If $phi$ is invertible then the entropy operator is bounded with the topological entropy of $phi$ as its norm.

متن کامل

ذخیره 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: Digital Signal Processing

سال: 2021

ISSN: ['1051-2004', '1095-4333']

DOI: https://doi.org/10.1016/j.dsp.2021.103107