Results 91 to 100 of about 994,443 (373)

Aggregated estimating equation estimation [PDF]

open access: yesStatistics and Its Interface, 2011
Motivated by the recent active research on online analytical processing (OLAP), we develop a computation and storage efficient algorithm for estimating equation (EE) estimation in massive data sets using a “divide-and-conquer” strategy. In each partition of the data set, we compress the raw data into some low dimensional statistics and then discard the
Ruibin Xi, Nan Lin
openaire   +2 more sources

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

A TIME-OPTIMAL ALGORITHM FOR THE ESTIMATION OF CONTACT DISTRIBUTION FUNCTIONS OF RANDOM SETS

open access: yesImage Analysis and Stereology, 2011
This paper presents a linear-time and therefore time-optimal algorithm for the estimation of distance distribution functions and contact distribution functions of random sets.
Johannes Mayer
doaj   +1 more source

A simple variance estimator for unequal probability sampling without replacement

open access: yes, 2003
Survey sampling textbooks often refer to the Sen-Yates-Grundy variance estimator for use with without replacement unequal probability designs. This estimator is rarely implemented, because of the complexity of determining joint inclusion probabilities ...
Berger, Yves G.
core  

B cell mechanobiology in health and disease: emerging techniques and insights into therapeutic responses

open access: yesFEBS Letters, EarlyView.
B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro   +2 more
wiley   +1 more source

Application Regression Method in the Calculation Of Indicators Economic Risk [PDF]

open access: yesRevista Română de Statistică, 2013
The objective of this Article is to show that economic risk is influenced by multiple factors, and by regression method can establish the extent of influence of each factor.
Florina Roman Stan
doaj  

Reconstruction of the execution times dynamics of real-time tasks by fuzzy digital filtering

open access: yesRevista Facultad de Ingeniería Universidad de Antioquia, 2014
Real-time systems (RTS) process their activities through tasks which in turn consist of a set of instances, each one of this real-time task (RTT) have six temporary  constraints:  arrival  time,  start  time,  execution  time,  end  time,  over time and
Jorge Salvador Valdez Martínez   +3 more
doaj   +1 more source

Group Lasso for high dimensional sparse quantile regression models [PDF]

open access: yes, 2011
This paper studies the statistical properties of the group Lasso estimator for high dimensional sparse quantile regression models where the number of explanatory variables (or the number of groups of explanatory variables) is possibly much larger than ...
Kato, Kengo
core  

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