Results 291 to 300 of about 2,518,110 (330)

Phylogeny and divergence time estimation of the walnut family (Juglandaceae) based on nuclear RAD-Seq and chloroplast genome data.

Molecular Phylogenetics and Evolution, 2020
The walnut family Juglandaceae was widely distributed in the Northern Hemisphere while several extant genera now exhibit intercontinental disjunctions.
Xian‐Yun Mu, Ling Tong, Miao-miao Sun, Yi-Xuan Zhu, J. Wen, Qin‐Wen Lin, Bing Liu   +6 more
semanticscholar   +1 more source

Specificity: A Graph-Based Estimator of Divergence

IEEE Transactions on Pattern Analysis and Machine Intelligence, 2011
In statistical modeling, there are various techniques used to build models from training data. Quantitative comparison of modeling techniques requires a method for evaluating the quality of the fit between the model probability density function (pdf) and the training data.
Carole J. Twining, Christopher J. Taylor 0001   +1 more
openaire   +3 more sources

On a few pitfalls in KL divergence gradient estimation for RL

arXiv.org
We point out a few pitfalls in implementing gradient estimation for KL divergence in RL training for LLM, as seen in a number of open source projects and papers.
Yunhao Tang, Rémi Munos
semanticscholar   +1 more source

A novel density estimation based intrusion detection technique with Pearson's divergence for Wireless Sensor Networks.

ISA transactions, 2020
We present a novel technique to detect an intrusive attack that occurs in the network due to the presence of a compromised node. These intrusive attacks last for a long time in the network due to the existence of compromised nodes this also affects the ...
S. Gavel, A. S. Raghuvanshi, S. Tiwari
semanticscholar   +1 more source

Histogram-based estimation for the divergence revisited

2009 IEEE International Symposium on Information Theory, 2009
This work revisits and extends the problem of consistent divergence estimation using data-dependent partitions. For distributions defined on (ℝd, β(ℝd)), the main result characterizes sufficient conditions on a data-dependent partition scheme to get a strongly consistent histogram-based estimate of the divergence.
Shrikanth S. Narayanan, Jorge F. Silva
openaire   +1 more source

Robustness of Divergence Time Estimation Despite Gene Tree Estimation Error: A Case Study of Fireflies (Coleoptera: Lampyridae).

Systematic Biology
Genomic data has become ubiquitous in phylogenomic studies, including divergence time estimation, but provide new challenges. These challenges include, amongst others, biological gene tree discordance, methodological gene tree estimation error, and ...
S. Höhna, Sarah E Lower, Pablo Duchen, Ana Catalán   +3 more
semanticscholar   +1 more source

Estimation of variability, genetic divergence, correlation studies of Curcuma caesia Roxb.

, 2020
Curcuma caesia belonging to Zingiberaceae family is considered as an endangered plant. It has many medicinal properties which can cure different health disorders and due to its potential pharmaceutical and industrial applications, conservation of this ...
Manabi Paw, S. Munda, A. Borah, S. K. Pandey, M. Lal   +4 more
semanticscholar   +1 more source

Lower bounds for the divergence of orientational estimators

IEEE Transactions on Information Theory, 2001
Summary: This paper is concerned with the properties of estimators in \(O(n,p)\), the \(n\times p\) orthogonal matrices. It is shown that it is natural to introduce the notion of a parallel estimator where the expected value of the estimator must lie in the normal space (orthogonal complement of the tangent space) of \(O(n,p)\) at the true value.
Robert J. Valkenburg, Ramakrishna Kakarala   +1 more
openaire   +1 more source

Estimating divergence times

Theoretical Population Biology, 1988
A statistical method of estimating population splitting times is developed. We consider three populations, with an assumed known tree topology for their phylogenetic tree. From simulation studies, we find that the method of moments performs very well, in particular for both large number of loci and divergence times, in estimating genetic divergence ...
openaire   +2 more sources

Minimum (h,φ)-divergences estimators with weights

Applied Mathematics and Computation, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Elena Landaburu, Leandro Pardo
openaire   +1 more source