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Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Best subset selection via distance covariance
距离协方差 最佳子集 回归分析
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2023/4/14
Best subset selection is an important problem in regression analysis,which has many applications in computer science and medicine. However, the existing best subset selection methods have some limitat...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Variable selection for generalized linear models with interval-censored failure time data
区间删失 失效时间数据 广义线性模型 变量选择
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2023/5/9
Variable selection is often needed in many fields and has been discussed by many authors in various situations.
Bee competitive: Research reveals the impact of natural selection on nectar supply and demand
natural selection nectar supply and demand seasonal imbalances
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2021/8/6
Theoretical research indicates that natural selection will increase existing seasonal imbalances between the supply of nectar from flowers and the demand from bees and other insects.
Lizard blizzard survivors tell story of natural selection（图）
Lizard blizzard survivors tell story natural selection
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2017/9/4
An unusually cold winter in the U.S. in 2014 took a toll on the green anole lizard, a tree-dwelling creature common to the southeastern United States. A new study offers a rare view of natural selecti...
Changes in precipitation patterns influence natural selection at global scale
precipitation patterns natural selection global scale
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2017/3/14
What matters more for the evolution of plants and animals, precipitation or temperature? Scientists have found a surprising answer: rain and snow may play a more important role than how hot or cold it...
Factors Affecting the Incidence of Angel Wing in White Roman Geese: Stocking Density and Genetic Selection
Angel Wing Stocking Density Genetics White Roman Geese
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2016/7/27
The present study investigated stocking density and genetic lines, factors that may alter the severity and incidence of angel wing (AW), in White Roman geese. Geese (n = 384) from two genetically sele...
Selection of Sahiwal Cattle Bulls on Pedigree and Progeny
Sahiwal Cattle Bull Selection Pedigree Progeny Milk Yield
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2016/4/25
The objective of the study was to compare ranking of Sahiwal bulls selected on the basis of highest lactation milk yield of their dams with their estimated breeding values (EBVs) using an animal model...
Multivariate Regression Shrinkage and Selection by Canonical Correlation Analysis
Adaptive Lasso Canonical Correlation Analysis Multivariate Regression Selection Consistency
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2016/1/20
The problem of regression shrinkage and selection for multivariate regression is considered. The goal is to consistently identify those variables relevant for regression. This is done not only for pre...
Evolutionary Diversification of Multigene Families: Allelic Selection of Toxins in Predatory Cone Snails
Multigene Families Predatory Cone Snails
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2015/12/17
In order to investigate the evolution of conotoxin multigene families among two closely related vermivorous Conus
species, we sequenced 104 four-loop conotoxin mRNAs from two individuals of Conus ebr...
Developmental shifts and species selection in gastropods
gastropods Developmental shifts
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2015/12/17
The fossil record of marine gastropods has
been used as evidence to support the operation of species
selection; namely, that species with limited dispersal differentially increase in numbers because...
Positive Selection and Sequence Rearrangements Generate Extensive Polymorphism in the Gamete Recognition Protein Bindin
Positive Selection Sequence Rearrangements
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2015/12/17
Bindin is a gamete recognition protein of sea urchins that mediates species-specific attachment of sperm to an eggsurface receptor during fertilization. Sequences of bindin from closely related urchin...
Genome-wide polymorphisms show unexpected targets of natural selection
population genomics natural selection
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2015/12/11
Natural selection can act on all the expressed genes of an individual, leaving signatures of genetic differeniation or diversity at many loci across the genome. New power to assay these genome-wide ef...
Whole-Genome Positive Selection and Habitat-Driven Evolution in a Shallow and a Deep-Sea Urchin
positive selection dN/dS
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2015/12/11
Comparisons of genomic sequence between divergent species can provide insight into the action of natural
selection across many distinct classes of proteins. Here, we examine the extent of positive se...
BROADBAND SENSOR LOCATION SELECTION USING CONVEX OPTIMIZATION IN VERY LARGE SCALE ARRAYS
array processing multi-frequency beam pattern design sensor location selection very large scale arrays convex optimization simulated annealing
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2015/9/29
Consider a sensing system using a large number of N microphones placed in multiple dimensions to monitor a broadband acoustic field. Using all the microphones at once is impractical because of the amo...
Inversion of synthetic geodetic data for the 1997 Colfiorito events:clues on the effects of layering,assessment of model parameter PDFs,and model selection criteria
data inversion geodesy coseismic displacement
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2015/9/1
The 1997 September-October Umbria-Marche sequence has been extensively studied in the past by analyzing coseismic displacement data (GPS, leveling, SAR). Here we focus on synthetic data representative...