Results 31 to 40 of about 7,760,600 (326)

The balancing trick: Optimized sampling of imbalanced datasets—A brief survey of the recent State of the Art

Engineering Reports, 2021
This survey paper focuses on one of the current primary issues challenging data mining researchers experimenting on real‐world datasets. The problem is that of imbalanced class distribution that generates a bias toward the majority class due to ...
Dr. Seba Susan, Amitesh Kumar
doaj   +1 more source

Quantum rejection sampling

, 2011
Rejection sampling is a well-known method to sample from a target distribution, given the ability to sample from a given distribution. The method has been first formalized by von Neumann (1951) and has many applications in classical computing.
Berry D. W., Childs A. M., Childs A. M., Cleve R., Høyer P., Jérémie Roland, Maris Ozols, Martin Roetteler, van Neumann J.   +8 more
core   +1 more source

Airborne sampling of aerosol particles: Comparison between surface sampling at Christmas Island and P-3 sampling during PEM-Tropics B [PDF]

, 2002
Bulk aerosol sampling of soluble ionic compounds from the NASA Wallops Island P-3 aircraft and a tower on Christmas Island during PEM-Tropics B provides an opportunity to assess the magnitude of particle losses in the University of New Hampshire airborne
Andreae, Atlas, Atlas, Atlas, Bandy, Bates, Bates, Baumgardner, Blake, Blake, Blake, Blanchard, Carolyn Jordan, Chin, Clarke, Davis, Davis, Dibb, Dibb, Dibb, Dibb, Dibb, Donald R. Blake, Elliot Atlas, Eric Scheuer, Garry Seid, Giannakopoulos, Giannakopoulos, Guelle, Huebert, Huebert, Huebert, Jack E. Dibb, Jacob, Neele, Nicola J. Blake, Nowack, Oncley, Porter, Quinn, Quinn, Raper, Robert W. Talbot, Savoie, Xiao   +44 more
core   +3 more sources

The Impact of Sampling Medium and Environment on Particle Morphology

Atmosphere, 2017
Sampling on different substrates is commonly used in laboratory and field studies to investigate the morphology and mixing state of aerosol particles. Our focus was on the transformations that can occur to the collected particles during storage, handling,
Chao Chen, Ogochukwu Y. Enekwizu, Yan Ma, Dmitry Zakharov, Alexei F. Khalizov   +4 more
doaj   +1 more source

Sampling Techniques

, 2021
This chapter assesses sampling techniques. Researchers may restrict their data collection to a sample of a population for convenience or necessity if they lack the time and resources to collect data for the entire population. Therefore, a sample is any subset of units collected from a population.
openaire   +2 more sources

Metropolis Sampling

, 2017
Monte Carlo (MC) sampling methods are widely applied in Bayesian inference, system simulation and optimization problems. The Markov Chain Monte Carlo (MCMC) algorithms are a well-known class of MC methods which generate a Markov chain with the desired ...
Acton, Andrieu, Andrieu, Barker, Beaumont, Beaumont, Bernardo, Bierkens, Billera, Box, Brockwell, Brooks, Bugallo, Burden, Cai, Calderhead, Casarin, Craiu, Craiu, Dagpunar, Dunn, Elvira, Elvira, Gamerman, Gasemyr, Gelman, Gentle, Gilks, Gilks, Gilks, Giordani, Green, Haario, Haario, Hastings, Holden, Jacob, Jaeckel, Johnson, Kirkpatrick, Kroese, Kroese, Kythe, Levine, Liu, Liu, Liu, Locatelli, Marjoram, Martino, Martino, Martino, Martino, Metropolis, Meyer, Møller, Neal, Nummelin, Peskun, Plybon, Propp, Robert, Robert, Roberts, Roberts, Roberts, Roberts, Roberts, Tierney, Tierney   +69 more
core   +1 more source

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar, Denise M. Connolly, Ellen Kellington, Elyse Zelunka, Karla Kerrigan, Furqan Shaikh, Paul C. Nathan, Meredith S. Irwin, Sarah Cohen‐Gogo   +8 more
wiley   +1 more source

Fusão de imagens por IHS para melhorar a identificação de uso do solo em elementos amostrais Image fusion through IHS to improve identification of land use in sample elements

Engenharia Agrícola, 2007
Fotografias aéreas métricas atuais sobre áreas específicas nem sempre estão disponíveis. Esse é um dos principais problemas no Brasil para aplicação de técnicas de amostragem de área para a estimativa de safras.
Marcos Adami, Flavio Deppe, Rodrigo Rizzi, Mauricio A. Moreira, Bernardo F. T. Rudorff, Leila M. G. Fonseca, Rogério T. Faria   +6 more
doaj   +1 more source

Quantum-Like Sampling

Mathematics, 2021
Probability theory is built around Kolmogorov’s axioms. To each event, a numerical degree of belief between 0 and 1 is assigned, which provides a way of summarizing the uncertainty.
Andreas Wichert
doaj   +1 more source

Image Sampling with Quasicrystals [PDF]

, 2009
We investigate the use of quasicrystals in image sampling. Quasicrystals produce space-filling, non-periodic point sets that are uniformly discrete and relatively dense, thereby ensuring the sample sites are evenly spread out throughout the sampled image.
Dodgson, Neil A., Grundland, Mark, Masakova, Zuzana, Patera, Jiri   +3 more
core   +4 more sources