Results 71 to 80 of about 16,329,521 (81)

An improved CLTree algorithm

open access: yesDianxin kexue, 2016
An improved algorithm called CLTree-R was proposed.It could compensate the shortcoming of CLTree algorithm such as low accurate and inefficiency.Then CLTree-R was applied in clustering analysis for UCI data sets.In order to improve the efficiency,data ...
Zhuohang LI
doaj   +2 more sources

From Spider-Man to Hero — Archetypal Analysis in R

open access: yesJournal of Statistical Software, 2009
Archetypal analysis has the aim to represent observations in a multivariate data setas convex combinations of extremal points. This approach was introduced by Cutler andBreiman (1994); they dened the concrete problem, laid out the theoretical ...
Manuel J. A. Eugster, Friedrich Leisch
doaj  

RETRACTED ARTICLE: Efficient identity security authentication method based on improved R-LWE algorithm in IoT environment

open access: yesEURASIP Journal on Information Security
In recent years, various smart devices based on IoT technology, such as smart homes, healthcare, detection, and logistics systems, have emerged. However, as the number of IoT-connected devices increases, securing the IoT is becoming increasingly ...
Lin Yang
doaj   +1 more source

Decentralised Coordination of Unmanned Aerial Vehicles for Target Search using the Max-Sum Algorithm

open access: yes, 2010
This paper considers the coordination of a team of Unmanned Aerial Vehicles (UAVs) that are deployed to search for a moving target within a continuous space.
Xu, Zhe   +3 more
core   +1 more source

Kalman Filtering in R [PDF]

open access: yes
Support in R for state space estimation via Kalman filtering was limited to one package, until fairly recently. In the last five years, the situation has changed with no less than four additional packages offering general implementations of the Kalman ...
Fernando Tusell
core  

R-VGAL: a sequential variational Bayes algorithm for generalised linear mixed models

open access: yes
Models with random effects, such as generalised linear mixed models (GLMMs), are often used for analysing clustered data. Parameter inference with these models is difficult because of the presence of cluster-specific random effects, which must be ...
David Gunawan (5193539)   +2 more
core   +1 more source

The EM Algorithm [PDF]

open access: yes
The Expectation-Maximization (EM) algorithm is a broadly applicable approach to the iterative computation of maximum likelihood (ML) estimates, useful in a variety of incomplete-data problems.
Ng, See Ket   +2 more
core  

Multidimensional Scaling Using Majorization: SMACOF in R [PDF]

open access: yes
In this paper we present the methodology of multidimensional scaling problems (MDS) solved by means of the majorization algorithm. The objective function to be minimized is known as stress and functions which majorize stress are elaborated. This strategy
Patrick Mair, Jan de Leeuw
core  

topicmodels: An R Package for Fitting Topic Models [PDF]

open access: yes
Topic models allow the probabilistic modeling of term frequency occurrences in documents. The fitted model can be used to estimate the similarity between documents as well as between a set of specified keywords using an additional layer of latent ...
Bettina Grün, Kurt Hornik
core  

Rendering LaTeX in R

open access: yes
The xdvir package provides functions for rendering LaTeX fragments as labels, annotations, and data symbols in R plots. There are convenient high-level functions for rendering LaTeX fragments, including labels on ggplot2 plots, plus lower-level functions
Murrell, Paul
core  

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