[Edinburgh], [between 1788 and 1797]

[Edinburgh], [between 1788 and 1797]

London : Printed and sold by Thos. and John Bowles, printsellers, [1728]

[London] : [Thomas. Bowles] : [John Bowles], [1728]

The horseshoe prior is frequently employed in Bayesian analysis of high-dimensional models, and has been shown to achieve minimax optimal risk properties when the truth is sparse. While optimization-based algorithms for the extremely popular Lasso and elastic net procedures can scale to dimension in the hundreds of thousands, algorithms for the horseshoe that use Markov chain Monte Carlo (MCMC) for computation are limited to problems an order of magnitude smaller. This is due to high computational cost per step and growth of the variance of time-averaging estimators as a function of dimension. We propose two new MCMC algorithms for computation in these models that have significantly improved performance compared to existing alternatives. One of the algorithms also approximates an expensive matrix product to give orders of magnitude speedup in high-dimensional applications. We prove guarantees for the accuracy of the approximate algorithm, and show that gradually decreasing the approximation error as the chain extends results in an exact algorithm. The scalability of the algorithm is illustrated in simulations with problem size as large as $N=5,000$ observations and $p=50,000$ predictors, and an application to a genome-wide association study with $N=2,267$ and $p=98,385$. The empirical results also show that the new algorithm yields estimates with lower mean squared error, intervals with better coverage, and elucidates features of the posterior that were often missed by previous algorithms in high dimensions, including bimodality of posterior marginals indicating uncertainty about which covariates belong in the model.

Anindya Bhadra, Jyotishka Datta, Nicholas G. Polson, Brandon Willard.

Source: Statistical Science, Volume 34, Number 3, 405--427.

Abstract:
The goal of this paper is to contrast and survey the major advances in two of the most commonly used high-dimensional techniques, namely, the Lasso and horseshoe regularization. Lasso is a gold standard for predictor selection while horseshoe is a state-of-the-art Bayesian estimator for sparse signals. Lasso is fast and scalable and uses convex optimization whilst the horseshoe is nonconvex. Our novel perspective focuses on three aspects: (i) theoretical optimality in high-dimensional inference for the Gaussian sparse model and beyond, (ii) efficiency and scalability of computation and (iii) methodological development and performance.

Canine-equid pairs can mimic each other’s facial expressions during play, which has never been seen between animals of different species

An outreach team learns the value of sharing their personal testimonies and what a little light can do to a community.

In rural Kentucky, teachers and students are awarded innovation grants to solve a challenge facing their community or classroom.

The horse racing authority is pleading for a partial restart of the industry under Level 4 of the lockdown, warning that a prolonged suspension of activity could lead to massive financial impact and job losses.

The company has also suspended its shares from the JSE, but maintains that there is still a "reasonable prospect" of rescuing the business.

A Kent County horse has tested positive for West Nile Virus, the Department of Agriculture announced today. The horse, which is recovering well, is Delaware's first confirmed equine case of West Nile Virus since 2003, said Delaware State Veterinarian Dr. Heather Hirst, who urged equine owners to get their horses vaccinated.

A second Delaware horse has tested positive for West Nile Virus, but has recovered. The two-year-old filly from Sussex County is the state’s second confirmed case of West Nile Virus since 2003. Delaware’s first equine case of West Nile Virus this year was diagnosed in Kent County in August; that horse has also recovered.

A horse from Sussex County has tested positive for Eastern Equine Encephalitis, a mosquito-borne disease, the Delaware Department of Agriculture announced today.

With warm weather here and mosquito season under way, Delaware horse owners are being advised to make certain their equines’ vaccinations are current to protect against the threat of two potentially fatal diseases. Unvaccinated horses suffer most severely from both West Nile Virus and Eastern Equine Encephalomyelitis, which are spread by infected mosquitoes and can be fatal.

Delaware horse racing contributed more than $182 million to the state's economy in 2014, supporting the equivalent of more than 1,500 full-time jobs, according to an economic impact study released today.

West Nile Virus and Eastern Equine Encephalomyelitis both spread by mosquitoes DOVER – Delaware horse owners are being advised to make certain their equines’ vaccinations are current to protect against the threat of two potentially fatal diseases. Unvaccinated horses suffer most severely from both West Nile Virus and Eastern Equine Encephalomyelitis, which are spread by […]

The Office of the State Veterinarian today announced the Delaware's first case of West Nile Virus (WNV) in a horse in 2017. This is the first confirmed case of WNV in a horse in Delaware since 2015.

The Office of the State Veterinarian announced today Delaware’s first and second cases of West Nile Virus (WNV) found in horses in 2018. The first infected horse is a 3-year-old Standardbred mare and the second horse is a 2-year-old Thoroughbred mare, both residing in Kent County.

The Office of the State Veterinarian announced today Delaware’s fourth and fifth cases of West Nile Virus (WNV) found in horses in 2018. Three previous cases of WNV in horses were reported in 2018, two in August and one in September. Even though we are nearing the end of the mosquito season, the State Veterinarian urges horse owners to contact their veterinarians as soon as possible to have horses and other equines vaccinated against WNV and EEE. Neither disease has a specific drug treatment, and EEE infections in horses are fatal in 70 to 90 percent of cases, and WNV in 30 percent of cases.

Curator of collections made a lasting impact in presenting and Saving Delaware History.

The post Ann Baker Horsey to retire from the division after 44 years of service appeared first on Division of Historical and Cultural Affairs - State of Delaware.

Do you recall the mention, in this blog, of the “poetry in Horseshoe Crabs”? (If not, just keyword-search “poetry” on this page.) Now is your chance to prepare for experiencing that poetry for yourself, when “dancing” with the crabs during a real-life beach “party” in support of a good cause: DNERR’s annual Horseshoe Crab Spawning […]

The post Dancing with Horseshoe Crabs, Under the Stars appeared first on DNERR Blog - State of Delaware.

A "dark horse" is defined as a little-known entity that emerges to prominence in the face of competition — a contestant that seems unlikely to succeed. I borrow the term from a conversation last week, wherein India was referred to as the dark horse in the global race to go solar.

For decades, car owners looking for the latest technology features have had to wait for the arrival of a new model year. Now, their daily ride can always be state of the art. The Xpeng P7 is an all-electric sports sedan developed from the ground up for an intelligent driving future. Introduced this week in Read article >

The post Beyond Horsepower: Xpeng P7 Shows What’s Next for Intelligent Transportation appeared first on The Official NVIDIA Blog.

From exotic animals to spectacles and chandeliers, Michael Laver’s “The Dutch East India Company in Early Modern Japan” shows how well-placed gifts were essential in ...

Title: Working With Horses May Ease Stress in Kids
Category: Health News
Created: 4/29/2014 2:36:00 PM
Last Editorial Review: 4/30/2014 12:00:00 AM

RPGamer puts this episode out to pasture, along with Marc Whitten and Koji Igarashji. In the meantime, you can go play Star Trek Online on...

The direction of ocean currents can determine the direction of gene flow in rafting species, but this depends on species traits that allow for rafting propensity. This is according to a study focusing on seahorse and pipefish species. And it could explain how high genetic diversity can contribute to extinction in small populations.

A five-star luxury hotel in London has been spreading a little joy amid the coronavirus outbreak by serving up free meals for key workers.

A young wild horse likely wouldn't have survived the night if a group of animal lovers hadn't stumbled across the filly struggling — and failing — to drag itself out of a two-metre deep mud hole.

'This type of natural manipulation in ecosystems ... has barely been researched to date, but holds tremendous potential,' says researcher

Actor's pets have made star appearances in previous videos

After 17 races, it became clear this $180,000 thoroughbred wasn't going to cut it on the track this is how Absolutely Win ended up at a Queensland slaughterhouse.

The Australian racing industry is in turmoil after revelations of former racehorses being slaughtered at abattoirs, with leading trainer Chris Waller so shocked he "couldn't watch" the vision.

The direction of ocean currents can determine the direction of gene flow in rafting species, but this depends on species traits that allow for rafting propensity. This is according to a City College of New York study focusing on seahorse and pipefish species. And it could explain how high genetic diversity can contribute to extinction in small populations.

As the National Horse Traceability Scheme awaits an official launch, experts say horse welfare is falling short while volunteers take the lead.

X was supposed to tour behind its new album "Alphabetland." Now, bassist John Doe is home in Austin with his partner, his two horses nearby: "They keep me sane."

Innovation may be a fundamental part of

Meet the 'Japan pig,' a newly discovered pygmy seahorse that is as tiny as it is beautiful.

In this case, the HORSE is a 'living' machine, not an animal, and has the potential to reinvent the food cycle.

This week, Anishinaabe tribal members began riding horseback along the proposed route of a what could possibly become the largest tar sands pipeline in the United States.

Our photo of the day comes from the waters off Sydney, Australia.

The horsemeat scandal in the UK and Europe could make more people turn to vegetarianism.

With news that Southwest is allowing mini horses on flights, here's what to know about these petite equine wonders.

For billions of years, a tiny moon has been slyly orbiting the ice giant – now the little lovely has a poetic name, as well as a surprisingly violent backstory.

Tangled in fishing line with things looking grim, the story of Frito's rescue is inspiring all around.

Writing in Bloomberg, Marc Champion has a thought-provoking, but controversial take on horse meat, noting that the ban of horse slaughterhouses in the US has increased suffering for the animals. Is that a case for killing them here?