Results 21 to 30 of about 688,609 (284)

Estimating parameters of factor analysis model maximum likelihood method)) by using EM algorithm with application [PDF]

open access: yesمجلة التربية والعلم, 2009
Expectation maximization algorithm (EM) is used to create estimator with the same qualities of maximum likelihood Estimator taking into consideration the existence of two types of data, Data viewing (observed data) and hidden data (missing data), in this
Thanoon alshakerchy
doaj   +1 more source

SQUAREM: An R Package for Off-the-Shelf Acceleration of EM, MM and Other EM-Like Monotone Algorithms

open access: yesJournal of Statistical Software, 2020
We discuss the R package SQUAREM for accelerating iterative algorithms which exhibit slow, monotone convergence. These include the well-known expectation-maximization algorithm, majorize-minimize (MM), and other EM-like algorithms such as expectation ...
Yu Du, Ravi Varadhan
doaj   +1 more source

Adjusted Viterbi training for hidden Markov models [PDF]

open access: yes, 2005
To estimate the emission parameters in hidden Markov models one commonly uses the EM algorithm or its variation. Our primary motivation, however, is the Philips speech recognition system wherein the EM algorithm is replaced by the Viterbi training ...
Koloydenko, A., Lember, J.
core   +7 more sources

Performance Enhancement of Wi-Fi Fingerprinting-Based IPS by Accurate Parameter Estimation of Censored and Dropped Data [PDF]

open access: yesRadioengineering, 2019
In complex indoor environments, the censoring, dropping, and multi-component problems may present in the observable data. This is due to the attenuation of signals, the unexpected operation of equipments, and the changing surrounding environment ...
T. K. Vu, M. K. Hoang, H. L. Le
doaj  

SGA based symbol detection and EM channel estimation for MIMO systems [PDF]

open access: yes, 2006
This paper investigates iterative channel estimation and symbol detection for spatial multiplexing multiple input multiple output (MIMO) systems with frequency flat block fading channels using the expectation-maximization (EM) algorithm.
Andrieu, Christophe   +3 more
core   +2 more sources

Latent Class Probabilistic Latent Feature Analysis of Three-Way Three-Mode Binary Data

open access: yesJournal of Statistical Software, 2018
The analysis of binary three-way data (i.e., persons who indicate which attributes apply to each of a set of objects) may be of interest in several substantive domains as sensory profiling, marketing research or personality assessment.
Michel Meulders, Philippe De Bruecker
doaj   +1 more source

Statistical Generalized Derivative Applied to the Profile Likelihood Estimation in a Mixture of Semiparametric Models

open access: yesEntropy, 2020
There is a difficulty in finding an estimate of the standard error (SE) of the profile likelihood estimator in the joint model of longitudinal and survival data.
Yuichi Hirose, Ivy Liu
doaj   +1 more source

On the Estimation of Nonrandom Signal Coefficients from Jittered Samples [PDF]

open access: yes, 2010
This paper examines the problem of estimating the parameters of a bandlimited signal from samples corrupted by random jitter (timing noise) and additive iid Gaussian noise, where the signal lies in the span of a finite basis.
Goyal, Vivek K, Weller, Daniel S.
core   +5 more sources

An EM algorithm for dynamic SPECT

open access: yesIEEE Transactions on Medical Imaging, 1999
In this paper we present two variants of the EM algorithm for dynamic SPECT imaging. A version based on compartmental modeling which fits a sum of exponentials and a more general approach allowing for arbitrary decaying activities. The underlying probabilistic models are discussed and the incomplete and complete data spaces are shown to be physically ...
Heinz H. Bauschke   +3 more
openaire   +3 more sources

Efficient training algorithms for HMMs using incremental estimation [PDF]

open access: yes, 1998
Typically, parameter estimation for a hidden Markov model (HMM) is performed using an expectation-maximization (EM) algorithm with the maximum-likelihood (ML) criterion. The EM algorithm is an iterative scheme that is well-defined and numerically stable,
Gotoh, Y.   +2 more
core   +1 more source

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