Learning mixtures of truncated basis functions from data

نویسندگان
چکیده

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

Learning Mixtures of Truncated Basis Functions from Data

In this paper we describe a new method for learning hybrid Bayesian network models from data. The method utilizes a kernel density estimator, which is in turn “translated” into a mixture of truncated basis functions-representation using a convex optimization technique. We argue that these estimators approximate the maximum likelihood estimators, and compare our approach to previous attempts at ...

متن کامل

Mixtures of truncated basis functions

In this paper we propose a framework, called mixtures of truncated basis functions (MoTBFs), for representing general hybrid Bayesian networks. The proposed framework generalizes both the mixture of truncated exponentials (MTEs) framework and the mixture of polynomials (MoPs) framework. Similar to MTEs and MoPs, MoTBFs are defined so that the potentials are closed under combination and marginal...

متن کامل

Incorporating Prior Knowledge when Learning Mixtures of Truncated Basis Functions from Data

A quick recall of how of how to do approximations in R n : 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 We want to approximate the vector f = (3, 2, 5) with A vector along e 1 = (1, 0, 0). A quick recall of how of how to do approximations in R n : 0 1 2 3 4 5 0 1 2 3 4 5 0 1 2 3 4 5 We want to approximate the vector f = (3, 2, 5) with A vector along e 1 = (1, 0, 0). Best choice is f , e 1 · e 1 = (3, 0,...

متن کامل

Learning Conditional Distributions Using Mixtures of Truncated Basis Functions

Mixtures of Truncated Basis Functions (MoTBFs) have recently been proposed for modelling univariate and joint distributions in hybrid Bayesian networks. In this paper we analyse the problem of learning conditional MoTBF distributions from data. Our approach utilizes a new technique for learning joint MoTBF densities, then propose a method for using these to generate the conditional distribution...

متن کامل

Learning hybrid Bayesian networks using mixtures of truncated exponentials

In this paper we introduce an algorithm for learning hybrid Bayesian networks from data. The result of the algorithm is a network where the conditional distribution for each variable is a mixture of truncated exponentials (MTE), so that no restrictions on the network topology are imposed. The structure of the network is obtained by searching over the space of candidate networks using optimisati...

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: International Journal of Approximate Reasoning

سال: 2014

ISSN: 0888-613X

DOI: 10.1016/j.ijar.2013.09.012