Kurtis Shuler, Marilou Sison-Mangus, Juhee Lee.

Source: Bayesian Analysis, Volume 15, Number 2, 559--578.

Abstract:
We propose a Bayesian sparse multivariate regression method to model the relationship between microbe abundance and environmental factors for microbiome data. We model abundance counts of operational taxonomic units (OTUs) with a negative binomial distribution and relate covariates to the counts through regression. Extending conventional nonlocal priors, we construct asymmetric nonlocal priors for regression coefficients to efficiently identify relevant covariates and their effect directions. We build a hierarchical model to facilitate pooling of information across OTUs that produces parsimonious results with improved accuracy. We present simulation studies that compare variable selection performance under the proposed model to those under Bayesian sparse regression models with asymmetric and symmetric local priors and two frequentist models. The simulations show the proposed model identifies important covariates and yields coefficient estimates with favorable accuracy compared with the alternatives. The proposed model is applied to analyze an ocean microbiome dataset collected over time to study the association of harmful algal bloom conditions with microbial communities.

Gregorio Quintana-Ortí, Amelia Simó.

Source: Statistical Science, Volume 34, Number 2, 236--252.

Abstract:
This paper is focused on kernel regression when the response variable is the shape of a 3D object represented by a configuration matrix of landmarks. Regression methods on this shape space are not trivial because this space has a complex finite-dimensional Riemannian manifold structure (non-Euclidean). Papers about it are scarce in the literature, the majority of them are restricted to the case of a single explanatory variable, and many of them are based on the approximated tangent space. In this paper, there are several methodological innovations. The first one is the adaptation of the general method for kernel regression analysis in manifold-valued data to the three-dimensional case of Kendall’s shape space. The second one is its generalization to the multivariate case and the addressing of the curse-of-dimensionality problem. Finally, we propose bootstrap confidence intervals for prediction. A simulation study is carried out to check the goodness of the procedure, and a comparison with a current approach is performed. Then, it is applied to a 3D database obtained from an anthropometric survey of the Spanish child population with a potential application to online sales of children’s wear.

Canada Goose has long been a leader in the outdoor gear space.

Far-right groups and individuals in the United States are exploiting the COVID-19 pandemic to promote disinformation, hate, extremism and authoritarianism. "COVID-19 has been seized by far-right groups as an opportunity to call for extreme violence," states a report from ISD, based on a combination of natural language processing, network analysis and ethnographic online research.

Once known as “the gold of the Incas,” quinoa has been one of the world’s neglected crops but is currently becoming more and more popular. For centuries, quinoa remained a hidden treasure grown almost exclusively by indigenous communities in the Andean heights. Lately, quinoa has been growing in popularity with foodies and health-conscious consumers around the world. It was even [...]

Today’s fisheries sector hosts a multibillion dollar industry that is a vital source of food and nutrition, employment, trade, economic wellbeing and recreation. What is blue growth? The concept of a "blue economy" came out of the 2012 Rio+20 Conference and emphasizes conservation and sustainable management, based on the premise that healthy ocean ecosystems are more productive and a must for sustainable [...]

The COVID-19 pandemic is currently one of the world’s most pressing issues and one that is increasingly shaping government policies. To help provide policy support and information to member [...]

Supai is so remote, mail is delivered by mule train

The pint-sized institution, which opened last year, is filled with 1,000 feline-themed knickknacks that journeyed with their owners from Ukraine

Tour world-class museums, read historic cookbooks, browse interactive maps and more

New research details the first forensic investigation of the Sylt concentration camp, located on the Channel Island of Alderney, since the end of WWII

The nine classes span contemporary art, fashion and photography

The London institution's online offerings include 280,000 newly added Creative Commons images

Why not use quarantine as an opportunity to have your homeschoolers master woodworking or engine repair?

In 1919, a second wave of cases of the previous year's flu lead to the sudden death of the hockey championship

Sheltering in place doesn’t mean you can’t study up for your next European adventure

Yukon officials say the territory's campgrounds will open to campers on June 4, but the territory's borders will remain closed. They also issued guidelines for some health care services to reopen.

<span class="topsy_trackback_comment"><span class="topsy_twitter_username"><span class="topsy_trackback_content">Bebo doesn't fancy Liz Taylor! | RSS Feeds – IMC OnAir, India ...: May not do Madhur Bhandarkar's film which appar... http://bit.ly/9btJW3</span></span>

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<span class="topsy_trackback_comment"><span class="topsy_twitter_username"><span class="topsy_trackback_content">Justin Bieber ignores online bullying | RSS Feeds – IMC OnAir ...: Teen sensation Justin Bieber is used to get bul... http://bit.ly/c455Kn</span></span>

Every year Washingtonians are treated to a feast for the eyes as ornamental cherry trees bloom across the city, most prominently by the Tidal Basin. As cherry blossom season approaches, we would like to share information about two related resources that we hope will offer some inspiration for those near and far: a selected set […]

What would have been Cape Breton University's largest convocation to date is being replaced by an online offering this year because of COVID-19. Some graduating students say it just won't be the same as a traditional ceremony.

The upcoming debate about whether to expand the urban boundary is one of the city's big issues this term. But instead of delaying it, the city's testing out a never-before-attempted democratic process. Should they?

The Canadian four-time world champion figure skater took part in the Americares Blades for the Brave fundraiser for front-line workers battling the COVID-19 pandemic.

Canadian figure skater Scott Moir posted a video on Instagram and Twitter on Thursday, explaining that he and fiancee Jackie Mascarin are currently stationed in Tampa, Fla., because Mascarin works as a physician's assistant in the respiratory unit of a local hospital.

India's lavish weddings go online in virus lockdown  South China Morning Post

Acclaimed jigger Ryan Richard, from Sandy Bay First Nation, is calling all dancers to showcase their skills in an online jigging competition.

OM Finland extends love and fellowship to immigrant mothers through friendship groups, open conversation and learning together.

UN Secretary General Antonio Guterres said Friday the coronavirus pandemic keeps unleashing "a tsunami of hate and xenophobia, scapegoating and scaremongering" and appealed for "an all-out effort to end hate speech globally."

As British Columbians maintain physical distancing recommendations during the COVID-19 pandemic, this year’s Easter celebrations will have to change. In Kamloops, B.C., organizations are working to make sure Easter is as fun and social as it can be. 

The coronavirus pandemic has forced major professional sports leagues across North America to push the pause button. But even if the NHL, CFL, NBA or MLS are given the green light, many fans have reservations about returning to arenas until a vaccine for the virus is available.

The time was right for Lisa Weagle to join forces with Olympic champion Jennifer Jones. Jones told CBC Sports' Anastasia Bucsis that the latest addition to her five-person rink "was like the clouds parted and the sun came out."

Bank of Italy Working Papers by Luca Metelli, Filippo Natoli and Luca Rossi

The Penn State Mont Alto campus held its annual Academic and Leadership Awards Ceremony online on Sunday, April 19. Eighty-eight students were recognized for their academic achievements and campus leadership during the 2019-20 academic year. Three faculty members and one staff member were also recognized for their above-and-beyond contributions to the learning environment at Penn State Mont Alto.

The 2020 "Expanding Empathy" lecture series has moved online and added a lecture on "The Altruistic Brain," as well as a panel discussion on empathy in the time of COVID-19, both to be held on April 29 via Zoom.

In what are the lowest prices we've seen on Mid 2019 15-inch MacBook Pros, Amazon-owned Woot has refurbished units discounted to as low as $1,579.99, with savings of up to $950 off. These units are refurbished by Apple, but come with a 1-year Woot warranty.

Apple has now launched a new shop front online which is expressly for making it easier to buy, and get technical help, from home.

When OM Montenegro began in 2007 with a team of three, holding a full Sunday meeting seemed a long way off—but not anymore.

Four OM guys in Bar, Montenegro, and four guys from a nearby Roma camp take a hiking/camping trip together.

Working with SOLIDWORKS on an SNL server, you can sometimes experience an Activation error message. Often these messages are not the same as the activation error messages you recieve when performing standalone activation What is SNL? SNL is short for

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