Results 21 to 30 of about 684,507 (282)

Analogy-Based Approaches to Improve Software Project Effort Estimation Accuracy

open access: yesJournal of Intelligent Systems, 2019
In the discipline of software development, effort estimation renders a pivotal role. For the successful development of the project, an unambiguous estimation is necessitated.
Resmi V, Vijayalakshmi S
doaj   +1 more source

Determination of Load Equivalency Factors by Statistical Analysis of Weigh-In-Motion Data

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2016
The load equivalency factors for pavement design currently in use by the Hungarian standard have been developed using Weigh-in-Motion data obtained during the first few years of operations after installing some 30 measuring sites in Hungary in 1996.
Zoltán Soós, Csaba Tóth, Dávid Bóka
doaj   +1 more source

Evidential-EM Algorithm Applied to Progressively Censored Observations [PDF]

open access: yes, 2014
Evidential-EM (E2M) algorithm is an effective approach for computing maximum likelihood estimations under finite mixture models, especially when there is uncertain information about data.
A.P. Dempster   +5 more
core   +5 more sources

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

Classical simulation of infinite-size quantum lattice systems in two spatial dimensions [PDF]

open access: yes, 2008
We present an algorithm to simulate two-dimensional quantum lattice systems in the thermodynamic limit. Our approach builds on the {\em projected entangled-pair state} algorithm for finite lattice systems [F. Verstraete and J.I.
F. Verstraete   +5 more
core   +3 more sources

Spatially multi-scale dynamic factor modeling via sparse estimation

open access: yesInternational Journal of Mathematics for Industry, 2019
In many spatio-temporal data, their spatial variations have inherent global and local structures. The spatially continuous dynamic factor model (SCDFM) decomposes the spatio-temporal data into a small number of spatial and temporal variations, where the ...
Takamitsu Araki, Shotaro Akaho
doaj   +1 more source

EM algorithms without missing data [PDF]

open access: yesStatistical Methods in Medical Research, 1997
Most problems in computational statistics involve optimization of an objective function such as a loglikelihood, a sum of squares, or a log posterior function. The EM algorithm is one of the most effective algorithms for maximization because it iteratively transfers maximization from a complex function to a simple, surrogate function.
Becker, Mark   +2 more
openaire   +3 more sources

Semi-Parametric Joint Modeling of Survival and Longitudinal Data: The R Package JSM

open access: yesJournal of Statistical Software, 2020
This paper is devoted to the R package JSM which performs joint statistical modeling of survival and longitudinal data. In biomedical studies it has been increasingly common to collect both baseline and longitudinal covariates along with a possibly ...
Cong Xu   +2 more
doaj   +1 more source

Parameter Learning of Logic Programs for Symbolic-Statistical Modeling

open access: yes, 2011
We propose a logical/mathematical framework for statistical parameter learning of parameterized logic programs, i.e. definite clause programs containing probabilistic facts with a parameterized distribution.
Kameya, Y., Sato, T.
core   +2 more sources

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

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