Results 71 to 80 of about 42,989 (212)

Projective geometry over F_1 and the Gaussian binomial coefficients [PDF]

, 2004
Henry Cohn
openalex   +1 more source

Time‐Varying Dispersion Integer‐Valued GARCH Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT We introduce a general class of INteger‐valued Generalized AutoRegressive Conditionally Heteroscedastic (INGARCH) processes by allowing simultaneously time‐varying mean and dispersion parameters. We call such models time‐varying dispersion INGARCH (tv‐DINGARCH) models.
Wagner Barreto‐Souza, Luiza S. C. Piancastelli, Konstantinos Fokianos, Hernando Ombao   +3 more
wiley   +1 more source

Robust CDF‐Filtering of a Location Parameter

Journal of Time Series Analysis, EarlyView.
ABSTRACT This paper introduces a novel framework for designing robust filters associated with signal plus noise models having symmetric observation density. The filters are obtained by a recursion where the innovation term is a transform of the cumulative distribution function of the residuals.
Leopoldo Catania, Andrew C. Harvey, Alessandra Luati   +2 more
wiley   +1 more source

Empirical‐Process Limit Theory and Filter Approximation Bounds for Score‐Driven Time Series Models

Journal of Time Series Analysis, EarlyView.
ABSTRACT This article examines the filtering and approximation‐theoretic properties of score‐driven time series models. Under specific Lipschitz‐type and tail conditions, new results are derived, leading to maximal and deviation inequalities for the filtering approximation error using empirical process theory.
Enzo D'Innocenzo
wiley   +1 more source

Analyzing Non‐Random Selectivity in Online Job Advertisements Using Eurostat Benchmark Data and Generalized Sample Selection Models: An Application to EU Regional Labor Markets

LABOUR, EarlyView.
ABSTRACT The present paper provides an overall framework to afford the problem of non‐representativeness and non‐random selectivity arising from online job ads data, using Generalized sample selection models and Eurostat benchmark data. We jointly model the outcome intensity (number of online job ads in observed profiles, whose levels are defined by ...
Pietro Giorgio Lovaglio, Mario Mezzanzanica   +1 more
wiley   +1 more source

Diet and Care Mediate the Effects of Parenting and Nutrition Interventions on Childhood Infections

Maternal &Child Nutrition, EarlyView.
ABSTRACT The effect of community‐based multi‐input interventions that promote health, nutrition, and development on childhood infections, and the pathways that explain these effects remain unclear. We conducted a secondary analysis of a factorial‐designed clustered randomized controlled trial (N = 1489) conducted in rural Pakistan to estimate the ...
Nazia Binte Ali, Arjumand Rizvi, Saima Siyal, Wafaie W. Fawzi, Aisha K. Yousafzai, Christopher R. Sudfeld   +5 more
wiley   +1 more source

Seeing herbaria in a new light: leaf reflectance spectroscopy unlocks trait and classification modeling in plant biodiversity collections

New Phytologist, EarlyView.
Summary Reflectance spectroscopy is a rapid method for estimating traits and discriminating species. Spectral libraries from herbarium specimens represent an untapped resource for generating broad phenomic datasets across space, time, and taxa. We conducted a proof‐of‐concept study using trait data and spectra from herbarium specimens up to 179 yr old,
Dawson M. White, Jeannine Cavender‐Bares, Charles C. Davis, J. Antonio Guzmán Q., Shan Kothari, Jorge M. Robles, José Eduardo Meireles   +6 more
wiley   +1 more source

A High‐Throughput Phenotyping Pipeline for Quinoa (Chenopodium quinoa) Panicles Using Image Analysis With Convolutional Neural Networks

Plant Breeding, EarlyView.
ABSTRACT Quinoa is a grain crop with excellent nutritional properties that has attracted global attention for its potential contribution to future food security in a changing climate. Despite its long history of cultivation, quinoa has been improved little by modern breeding and is a niche crop outside its native cultivation area.
Flavio Lozano‐Isla, Lydia Kienbaum, Bettina I. G. Haussmann, Karl Schmid   +3 more
wiley   +1 more source

Traces of Intentionality: Balance, Complexity, and Organization in Artworks by Humans and Apes

Topics in Cognitive Science, EarlyView.
Abstract Are people able to tell apart a random configuration of lines and dots from a work of art? Previous studies have shown that untrained viewers can distinguish between abstract art made by professional artists, children, or apes. Pieces made by artists were perceived as more intentionally made and organized than the rest.
Larissa M. Straffon, Juan O. Perea‐García, Tijmen den Blaauwen, Mariska E. Kret   +3 more
wiley   +1 more source

Correlated amplitudes of potentials evoked in homologous muscles by magnetic stimulation reveal positive covariation of corticospinal output

Experimental Physiology, EarlyView.
Abstract figure There is positive covariation in the amplitudes of motor evoked potentials (MEPs) generated by (near simultaneous) stimulation of the two motor cortices. That is, larger responses to stimulation of the left motor cortex tend to be accompanied by larger responses to stimulation of the right motor cortex, and smaller responses to ...
Richard G. Carson
wiley   +1 more source