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Keywords: densities
Journal Article
An Improved Density Peaks Clustering Algorithm Based On Density Ratio Get access
The Computer Journal, Volume 67, Issue 7, July 2024, Pages 2515–2528, https://doi.org/10.1093/comjnl/bxae022
Published: 02 March 2024
.../standard-publication-reuse-rights ) Abstract Density peaks clustering (DPC) is a relatively new density clustering algorithm. It is based on the idea that cluster centers always have relatively high local densities and are relatively far from the points with higher densities. With the aforementioned idea...
Journal Article
Trends in larval densities, spawning timing, and site quality of capelin (Mallotus villosus) across bays and habitats in Newfoundland, Canada
ICES Journal of Marine Science, Volume 82, Issue 3, March 2025, fsad141, https://doi.org/10.1093/icesjms/fsad141
Published: 08 September 2023
... incidence of subtidal spawning. We aimed to (i) compare inter-annual trends in temperatures, timing of spawning, and annual larval densities between two northeastern bays [TB and Notre Dame Bay (NDB)] and (ii) compare habitat quality metrics and larval densities between subtidal and intertidal sites in NDB...
Journal Article
A manifold two-sample test study: integral probability metric with neural networks
Information and Inference: A Journal of the IMA, Volume 12, Issue 3, September 2023, Pages 1867–1897, https://doi.org/10.1093/imaiai/iaad018
Published: 14 June 2023
... densities, which achieves the type-II risk in the order of . To mitigate the heavy computation burden of evaluating the Hölder IPM, we approximate the Hölder function class using neural networks. Based on the approximation theory of neural networks, we show that the neural network IPM test has the type...
Journal Article
Efficient potential-tuning strategy through p-type doping for designing cathodes with ultrahigh energy density
National Science Review, Volume 7, Issue 11, November 2020, Pages 1768–1775, https://doi.org/10.1093/nsr/nwaa174
Published: 27 July 2020
... ( http://creativecommons.org/licenses/by/4.0/ ), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract Designing new cathodes with high capacity and moderate potential is the key to breaking the energy density ceiling...
Journal Article
A local group differences test for subject-level multivariate density neuroimaging outcomes
Biostatistics, Volume 22, Issue 3, July 2021, Pages 646–661, https://doi.org/10.1093/biostatistics/kxz058
Published: 26 December 2019
...Jordan D Dworkin; Kristin A Linn; Andrew J Solomon; Theodore D Satterthwaite; Armin Raznahan; Rohit Bakshi; Russell T Shinohara (1) the true density is bounded and continuous, (2) the bandwidth matrices, , represent a sequence of positive definite matrices in which the elements...
Journal Article
Economic Transformation in Africa from the Bottom Up: New Evidence from Tanzania
The World Bank Economic Review, Volume 34, Issue Supplement_1, February 2020, Pages S58–S62, https://doi.org/10.1093/wber/lhz035
Published: 24 December 2019
... to productive employment, policies must be targeted at the most promising firms. MSMEs labor productivity growth firm-level labor productivity informal sector kernel densities formality Africa's impressive performance over the past two decades has been accompanied by a proliferation of small firms, many...
Journal Article
Psi (Digamma) Function
Journal of the Royal Statistical Society Series C: Applied Statistics, Volume 25, Issue 3, November 1976, Pages 315–317, https://doi.org/10.2307/2347257
Published: 05 December 2018
... = «L - 1) * (L - 2» / 2+M U(IU) = W(J) IF (J .EQ. N2) G(1fO 4 IF (W(J + 1) .GT. W(J» W(J) = W(J + .1) 4 CONTINUE 5 CONTINUE RETURN END 315 Algorithm AS 103 Psi (Digamma) Function By J. M. BERNARDO University College London, Britain Keywords: PSI; DIGAMMA; BETA DENSITIES; GAMMA DENSITIES ISO Fortran...
Journal Article
Modelling Skewness and Kurtosis in the London Stock Exchange Ft-Se Index Return Distributions Get access
Journal of the Royal Statistical Society Series D: The Statistician, Volume 44, Issue 3, September 1995, Pages 323–332, https://doi.org/10.2307/2348703
Published: 05 December 2018
... 250 and the 350, over the period 1986-92. Empirical densities are fitted to each of the return distributions before their shapes are explored by using Tukey’s g- and h-distributions. The returns are characterized by highly non-Gaussian behaviour, being both skewed and extremely...
Journal Article
The Aliasing Problem in Differential Equation Estimation
Journal of the Royal Statistical Society: Series B (Methodological), Volume 38, Issue 2, January 1976, Pages 180–188, https://doi.org/10.1111/j.2517-6161.1976.tb01584.x
Published: 05 December 2018
... the asymptotic biases of these estimators under the contradictory hypothesis that the spectral density of the input is a rational function of frequency. On considering the limiting situation of the sampling interval converging to zero, we derive relatively simple multiplicative correction factors that can...
Journal Article
On Bernoulli Experiments with Imprecise Prior Probabilities Get access
Journal of the Royal Statistical Society Series D: The Statistician, Volume 43, Issue 1, March 1994, Pages 155–167, https://doi.org/10.2307/2348940
Published: 05 December 2018
... treatment of a Bernoulli experiment is not known precisely. Imprecision for Bernoulli experiments is discussed for the case where the prior densities are defined in the form of intervals of measures, and a simple model with conjugate imprecise prior densities is used for ease of calculation in updating...
Journal Article
On Palm's Model with a Large Number of Machines and Repairmen
Journal of the Royal Statistical Society: Series B (Methodological), Volume 47, Issue 2, January 1985, Pages 316–322, https://doi.org/10.1111/j.2517-6161.1985.tb01359.x
Published: 05 December 2018
... for a large number of machines and repairmen (and the relation between them) can be approximated by a probability density, which is the “pasting together” of two normal densities with different variances. Further, this result is used to find o(n ½)-optimal number of repairmen...
Journal Article
A Bayesian Time Varying Approach to Risk Neutral Density Estimation
Journal of the Royal Statistical Society Series A: Statistics in Society, Volume 182, Issue 1, January 2019, Pages 165–195, https://doi.org/10.1111/rssa.12386
Published: 27 June 2018
... with options quoted in volatility space) whereas those quoted in price terms can simply utilize the standard instrument convention to map quoted prices to implied volatilities, if different from the Black and Scholes volatilities. When extracting such a risk neutral density from option prices, non-parametric...
Journal Article
Microhabitat and presence of top predators affect prey apprehension in a subtropical mountain forest Get access
Journal of Mammalogy, Volume 99, Issue 3, 1 June 2018, Pages 596–607, https://doi.org/10.1093/jmammal/gyy046
Published: 15 May 2018
... apprehension of peccaries in shrubland, edge, and forest with sparse understory. To evaluate perceived predation risk, we used giving up densities (GUDs) in 3 trials with different food quantity. We related daily GUDs to predator presence, according to pictures recorded on trail cameras located around...
Journal Article
Hunter or hunted? Perceptions of risk and reward in a small mesopredator Get access
Journal of Mammalogy, Volume 98, Issue 6, 1 December 2017, Pages 1531–1537, https://doi.org/10.1093/jmammal/gyx100
Published: 26 August 2017
... killed by larger terrestrial carnivores and birds of prey. We used giving-up-density (GUD) experiments and observations of vigilance behavior to assess the influence of temporal, spatial, and anthropogenic factors on perceived risk in a population of bat-eared foxes at the Kuruman River Reserve, Northern...
Journal Article
1640 Rumen protozoal communities are dynamic after a dietary switch from conserved forage to pasture Get access
Journal of Animal Science, Volume 94, Issue suppl_5, October 2016, Page 799, https://doi.org/10.2527/jam2016-1640
Published: 01 October 2016
... densities
vitro disappearance of starch from these corn silages was not
correlated with kernel processing score. Based on the typical
in vitro fermentation times used commercially, corn silage 1641 Effects of Bacillus subitilis supplementation
fermentation for 4 mo increased in vitro digestion...
Journal Article
Life History of the Vulnerable Endemic Crayfish Cambarus (Erebicambarus) Maculatus (Decapoda: Astacoidea: Cambaridae) in Missouri, USA Get access
Journal of Crustacean Biology, Volume 36, Issue 5, 1 September 2016, Pages 615–627, https://doi.org/10.1163/1937240X-00002472
Published: 01 September 2016
... locations of Shoal Creek, Hazel Creek, Shibboleth Branch and Coonville Creek supplemental density sampling sites (from West to East). Diel sampling typically occurred during the middle of every study month. Kick-seining ( m-wide seines, Delta mesh) and hand collections (turning large rocks...
Journal Article
Similarities in perceived predation risk prevent temporal partitioning of food by rodents in an African grassland Get access
Journal of Mammalogy, Volume 97, Issue 2, 23 March 2016, Pages 483–489, https://doi.org/10.1093/jmammal/gyv192
Published: 26 December 2015
... in an African grassland to create microhabitats that varied in predation risk. We then estimated perceived predation risk of both nocturnal and diurnal rodents in these microhabitats by recording giving-up densities (GUDs) in artificial resource patches. We found that despite differences in predators, both...
Journal Article
Urban-associated drivers of song variation along a rural–urban gradient Get access
Behavioral Ecology, Volume 27, Issue 2, March-April 2016, Pages 608–616, https://doi.org/10.1093/beheco/arv197
Published: 22 November 2015
... thereafter. To assess stem densities within the territory for each focal male, we sampled vegetation surrounding 1 early and 1 late nest (i.e., 2 nest attempts per male) as well as a randomly located plot within the territory, in order to capture within-season variation. An “early-season” nest was defined...
Journal Article
Discriminative variable subsets in Bayesian classification with mixture models, with application in flow cytometry studies
Biostatistics, Volume 17, Issue 1, January 2016, Pages 40–53, https://doi.org/10.1093/biostatistics/kxv021
Published: 03 June 2015
.... Further development now relates them to classification performance in the context of the overall mixture model now involving the prior probabilities Our examples and much applied interest lies in mixture models where each component density may have a non-Gaussian form. One effective approach is to fit...
Journal Article
Determinantal Point Process Models and Statistical Inference Get access
Journal of the Royal Statistical Society Series B: Statistical Methodology, Volume 77, Issue 4, September 2015, Pages 853–877, https://doi.org/10.1111/rssb.12096
Published: 13 December 2014
... and realizations can be quickly simulated. We discuss how statistical inference is conducted by using the likelihood or moment properties of DPP models, and we provide freely available software for simulation and statistical inference. Maximum-likelihood-based inference Point process density Product densities...
