In classification models fairness can be ensured by solving a constrained optimization problem. We focus on fairness constraints like Disparate Impact, Demographic Parity, and Equalized Odds, which are non-decomposable and non-convex. Researchers define convex surrogates of the constraints and then apply convex optimization frameworks to obtain fair classifiers. Surrogates serve only as an upper bound to the actual constraints, and convexifying fairness constraints might be challenging.

We propose a neural network-based framework, emph{FNNC}, to achieve fairness while maintaining high accuracy in classification. The above fairness constraints are included in the loss using Lagrangian multipliers. We prove bounds on generalization errors for the constrained losses which asymptotically go to zero. The network is optimized using two-step mini-batch stochastic gradient descent. Our experiments show that FNNC performs as good as the state of the art, if not better. The experimental evidence supplements our theoretical guarantees. In summary, we have an automated solution to achieve fairness in classification, which is easily extendable to many fairness constraints.

We propose a novel estimation procedure for scale-by-scale lead-lag relationships of financial assets observed at high-frequency in a non-synchronous manner. The proposed estimation procedure does not require any interpolation processing of original datasets and is applicable to those with highest time resolution available. Consistency of the proposed estimators is shown under the continuous-time framework that has been developed in our previous work Hayashi and Koike (2018). An empirical application to a quote dataset of the NASDAQ-100 assets identifies two types of lead-lag relationships at different time scales.

When the response mechanism is believed to be not missing at random (NMAR), a valid analysis requires stronger assumptions on the response mechanism than standard statistical methods would otherwise require. Semiparametric estimators have been developed under the model assumptions on the response mechanism. In this paper, a new statistical test is proposed to guarantee model identifiability without using any instrumental variable. Furthermore, we develop optimal semiparametric estimation for parameters such as the population mean. Specifically, we propose two semiparametric optimal estimators that do not require any model assumptions other than the response mechanism. Asymptotic properties of the proposed estimators are discussed. An extensive simulation study is presented to compare with some existing methods. We present an application of our method using Korean Labor and Income Panel Survey data.

Given a multivariate data set, sparse principal component analysis (SPCA) aims to extract several linear combinations of the variables that together explain the variance in the data as much as possible, while controlling the number of nonzero loadings in these combinations. In this paper we consider 8 different optimization formulations for computing a single sparse loading vector; these are obtained by combining the following factors: we employ two norms for measuring variance (L2, L1) and two sparsity-inducing norms (L0, L1), which are used in two different ways (constraint, penalty). Three of our formulations, notably the one with L0 constraint and L1 variance, have not been considered in the literature. We give a unifying reformulation which we propose to solve via a natural alternating maximization (AM) method. We show the the AM method is nontrivially equivalent to GPower (Journ'{e}e et al; JMLR 11:517--553, 2010) for all our formulations. Besides this, we provide 24 efficient parallel SPCA implementations: 3 codes (multi-core, GPU and cluster) for each of the 8 problems. Parallelism in the methods is aimed at i) speeding up computations (our GPU code can be 100 times faster than an efficient serial code written in C++), ii) obtaining solutions explaining more variance and iii) dealing with big data problems (our cluster code is able to solve a 357 GB problem in about a minute).

Nicolas Garcia Trillos, Daniel Sanz-Alonso.

Source: Bayesian Analysis, Volume 15, Number 1, 29--56.

Abstract:
The Bayesian update can be viewed as a variational problem by characterizing the posterior as the minimizer of a functional. The variational viewpoint is far from new and is at the heart of popular methods for posterior approximation. However, some of its consequences seem largely unexplored. We focus on the following one: defining the posterior as the minimizer of a functional gives a natural path towards the posterior by moving in the direction of steepest descent of the functional. This idea is made precise through the theory of gradient flows, allowing to bring new tools to the study of Bayesian models and algorithms. Since the posterior may be characterized as the minimizer of different functionals, several variational formulations may be considered. We study three of them and their three associated gradient flows. We show that, in all cases, the rate of convergence of the flows to the posterior can be bounded by the geodesic convexity of the functional to be minimized. Each gradient flow naturally suggests a nonlinear diffusion with the posterior as invariant distribution. These diffusions may be discretized to build proposals for Markov chain Monte Carlo (MCMC) algorithms. By construction, the diffusions are guaranteed to satisfy a certain optimality condition, and rates of convergence are given by the convexity of the functionals. We use this observation to propose a criterion for the choice of metric in Riemannian MCMC methods.

Christophe Leterrier
Feb 28, 2018; 38:2135-2145
Viewpoints

The latest edition of The State of Food Security and Nutrition in the World will be launched on Monday 15 July 2019 during a special event on the [...]

The Farmers’ Market has been postponed for Friday 6 March and until further notice.

See what’s happening in the CME Group Agricultural markets, including the latest in the options market and opportunities from seasonality, cheese market updates, Black Sea grain news and more.

See volume, open interest, and other trading highlights for Fertilizer swaps and futures markets offered by CME Group.

Address by Mr Philip Lowe, Governor of the Reserve Bank of Australia, at the Reserve Bank of Australia, Sydney, 21 April 2020.

The National Capital Commission has reversed its decision and will now allow passersby to take photos at this year's Canadian Tulip Festival.

1. Coronavirus Outbreak Updates: Maharashtra reports 1,089 new COVID-19 cases across state, 748 in Mumbai; total infections at 19,063  Firstpost
2. Migrant workers | Maharashtra train accident victims were battling hunger  The Hindu
3. Maharashtra: They thought no trains were running, loco driver spotted them too late to stop  The Indian Express
4. ‘Stay where you are’: Shivraj Chouhan appeals to migrants after train tragedy  Hindustan Times
5. MP Ministers Ask Shivraj to Probe Tenure of Kamal Nath to ‘Expose Massive Corruption’  News18
6. View Full coverage on Google News

The NDP wants the Saskatchewan government to delay Phase 2 of its reopening plan, currently scheduled for May 19.

Here's a look at what's happening in our area on Thursday, May 7.

Here's a look at what's happening in our area on Friday, May 8.

See what’s happening in the CME Group Agricultural markets, including the latest in the options market and opportunities from seasonality, cheese market updates, Black Sea grain news and more.

See volume, open interest, and other trading highlights for Fertilizer swaps and futures markets offered by CME Group.

A number of popular iOS apps, including TikTok, Pinterest and Spotify, began to crash on Wednesday after an update to Facebook's SDK rolled out, software that many developers rely on to streamline the user login process.

Brydge on Wednesday launched a new update to improve its Brydge Pro+ keyboard with trackpad that recently starting shipping for iPad Pro. AppleInsider goes hands-on with the latest firmware to see how Brydge's improvements have strengthened the user experience of its flagship product.

A pair of model numbers recently discovered in multiple international regulatory filings hinted at a next-generation Beats headphone, but new information suggests the device may actually be related to an existing product that's already in circulation.

Being able to have an overview of changes to designs since initial release is an important aspect to time-efficient engineering. Making use of an automatically updated revision table helps with that.  What version are we using? Who has made these

Author information

The post How to set up an automatically updated revision table appeared first on SOLIDWORKS Tech Blog.

CNA Staff, May 7, 2020 / 03:45 pm (CNA).- Hours after the publication of a controversial open letter regarding the coronavirus pandemic, the prefect of the Church’s dicastery for liturgy and sacraments, listed among the signers of the letter, said he did not sign it.

The letter, titled “Appeal for the Church and the World,” says the coronavirus pandemic has been exaggerated to foster widespread social panic and undercut freedom, as a preparation for the establishment of a one-world government.

Cardinal Robert Sarah, prefect of the Vatican's Congregation for Divine Worship and Sacraments, tweeted: “I share on a personal basis some of the questions or concerns raised with regard to restrictions on fundamental freedoms, but I have not signed this petition.”

“A cardinal prefect of the Roman Curia must observe a certain reserve in political matters, Sarah wrote in another tweet, “so I explicitly asked this morning the authors of the petition titled ‘for the Church and for the world’ not to mention me.”

Sarah was listed as a signatory of the letter when it was published May 7 by the National Catholic Register, LifeSiteNews, and other websites. Sarah's denial raises questions about the legitimacy of other reported signatories to the letter.

Jeanette DeMelo, editor of the National Catholic Register, told CNA that the principal author of the letter is Archbishop Carlo Vigano, a former papal emissary to the United States.

Vigano made headlines for an August 2018 letter that alleged Vatican officials had ignored warnings about the sexual abuse of disgraced former cardinal Theodore McCarrick. Since that time, Vigano has released numerous letters expressing his viewpoints on matters in the Church, which include criticisms of Pope Francis and other curial officials.

DeMelo said that Vigano had vouched for the authenticity of Sarah's signature.

“The Register contacted Archbishop Vigano, the principal author, and asked him specifically about the authenticity of the signature of Cardinal Sarah and he said ‘I can confirm 100% that Cardinal Sarah signed it.,” DeMelo told CNA.

The letter laments the social distancing and stay-at-home orders issued to slow the spread of the coronavirus pandemic, suggesting they are contrived mechanisms of social control, with a nefarious purpose.

“We have reason to believe, on the basis of official data on the incidence of the epidemic as related to the number of deaths, that there are powers interested in creating panic among the world’s population with the sole aim of permanently imposing unacceptable forms of restriction on freedoms, of controlling people and of tracking their movements,” the letter said.

“The imposition of these illiberal measures is a disturbing prelude to the realization of a world government beyond all control,” it added. (bold original)

Among the letter’s reported signatories are four cardinals: Sarah, who has now indicated he is not a signatory; Cardinal Gerhard Muller, former prefect of the Congregation for the Doctrine of the Faith, Cardinal Joseph Zen, emeritus bishop of Hong Kong, and Cardinal Janis Pujats, emeritus archbishop of Riga, Latvia.

Two U.S. bishops are also alleged signatories: Bishop Rene Gracida, emeritus bishop of Corpus Christi, and Bishop Joseph Strickland, the Bishop of Tyler, Texas. 

Strickland told CNA by email May 7 that he “did sign off on this letter.”

Along with several other bishops, the well-known auxiliary bishop of Astana, Kazakhstan, Bishop Athanasius Schneider, is listed as a signer of the letter.

Another reported signatory is Fr. Curzio Nitoglia, a priest of the Society of St. Pius X, a traditionalist group in “irregular communion” with the Church. Nitoglia is the author of “The Magisterium of Vatican II,” a 1994 article that claims that “the church of Vatican II is therefore not the Apostolic and Roman Catholic Church instituted by our Lord Jesus Christ.”

The May 7 letter argued that the coronavirus pandemic has been sensationalized and exploited, to impede civil rights and exact government control over individuals and families.

The letter said that “the facts have shown that, under the pretext of the Covid-19 epidemic, the inalienable rights of citizens have in many cases been violated and their fundamental freedoms, including the exercise of freedom of worship, expression and movement, have been disproportionately and unjustifiably restricted.”

“Many authoritative voices in the world of science and medicine confirm that the media’s alarmism about Covid-19 appears to be absolutely unjustified.”

Nearly 4 million people worldwide have tested positive for the coronavirus, and at least 270,000 have died. In some countries, death rates in the months of the coronavirus pandemic have far exceeded death rates over the same months in previous years, suggesting to some demographers and epidemiologists that coronavirus deaths have been dramatically undercounted.

The pandemic, and the social distancing and stay-at-home orders issued to slow its spread, have become a source of considerable controversy in recent weeks. In the U.S., protests in several state capitals have gathered demonstrators in close proximity to one another, a move public health experts say could lead to new outbreaks of the disease.

The letter said that the economic crisis occasioned by the global pandemic “encourages interference by foreign powers and has serious social and political repercussions. Those with governmental responsibility must stop these forms of social engineering, by taking measures to protect their citizens whom they represent, and in whose interests they have a serious obligation to act.”

“The criminalization of personal and social relationships must likewise be judged as an unacceptable part of the plan of those who advocate isolating individuals in order to better manipulate and control them,” the authors added.

No cure or therapeutic treatment has yet been identified for the virus. In early weeks of the pandemic, President Donald Trump hypothesized that hydroxychloroquine, an inexpensive anti-malarial medication, could help treat the disease. U.S. researchers have largely moved away from the medication, especially after a study by the Veterans’ Administration found that administering the drug leads to higher death rates among patients receiving it.

Some, including television hosts Laura Ingraham and Sean Hannity have alleged that the study is inaccurate. Some protestors have suggested the VA study was intended to discredit Trump or profit vaccine manufacturers.

In an apparent reference to the hydroxychloroquine controversy, the letter said that: “Every effort must be made to ensure that shady business interests do not influence the choices made by government leaders and international bodies. It is unreasonable to penalize those remedies that have proved to be effective, and are often inexpensive, just because one wishes to give priority to treatments or vaccines that are not as good, but which guarantee pharmaceutical companies far greater profits, and exacerbate public health expenditures.” 

“Let us also remember, as Pastors, that for Catholics it is morally unacceptable to develop or use vaccines derived from material from aborted fetuses,” the letter added.

The U.S. bishops conference has also said vaccine development should avoid unethical links to abortion.

The letter argues that governments do not have the right to ban or restrict public worship or other kinds of ministry, and asks that any such restrictions be rescinded.

On the sacraments, which have been subject both to voluntary restrictions and public health orders in some states, the letter noted that “the Church firmly asserts her autonomy to govern, worship, and teach.”

“The State has no right to interfere, for any reason whatsoever, in the sovereignty of the Church. Ecclesiastical authorities have never refused to collaborate with the State, but such collaboration does not authorize civil authorities to impose any sort of ban or restriction on public worship or the exercise of priestly ministry. The rights of God and of the faithful are the supreme law of the Church, which she neither intends to, nor can, abdicate. We ask that restrictions on the celebration of public ceremonies be removed.”

While restrictions on public worship have been met with public criticism in many places, the objections have been most pronounced in Italy.

After Italy’s prime minister announced in late April new health measures that would continue prohibiting religious gatherings, the Italian bishops released a statement denouncing the decision, which the bishops criticized as “arbitrary.” Two days later, Pope Francis seemed to signal his own view, praying while celebrating Mass that Christians would respond to the lifting of lockdown restrictions with “prudence and obedience.”

Along with cardinals, bishops, and priests, the letter’s signatories also included some academics, journalists, and scientists. Included among them are Vatican journalists Marco Tosatti and Robert Moynihan, Lifesitenews editor John-Henry Westen, Stephen Mosher, president of the Virginia-based Population Research Institute, and the leaders of pro-life groups in Texas and Ohio.

The letter’s signatories encouraged Catholics, and “all men and women of good will” to “assess the current situation in a way consistent with the teaching of the Gospel. This means taking a stand: either with Christ or against Christ.” (bold original)
 
“Let us not allow centuries of Christian civilization to be erased under the pretext of a virus, and an odious technological tyranny to be established, in which nameless and faceless people can decide the fate of the world by confining us to a virtual reality. If this is the plan to which the powers of this earth intend to make us yield, know that Jesus Christ, King and Lord of History, has promised that ‘the gates of Hell shall not prevail’ (Mt 16:18).”

The Holy See has not yet commented on the letter.
 

This story has been updated since its original publication. It is developing and will continue to be updated.

The nutritional and immunologic properties of human milk, along with clear evidence of dose-dependent optimal health outcomes for both mothers and infants, provide a compelling rationale to support exclusive breastfeeding. US women increasingly intend to breastfeed exclusively for 6 months. Because establishing lactation can be challenging, exclusivity is often compromised in hopes of preventing feeding-related neonatal complications, potentially affecting the continuation and duration of breastfeeding. Risk factors for impaired lactogenesis are identifiable and common. Clinicians must be able to recognize normative patterns of exclusive breastfeeding in the first week while proactively identifying potential challenges. In this review, we provide new evidence from the past 10 years on the following topics relevant to exclusive breastfeeding: milk production and transfer, neonatal weight and output assessment, management of glucose and bilirubin, immune development and the microbiome, supplementation, and health system factors. We focus on the early days of exclusive breastfeeding in healthy newborns ≥35 weeks’ gestation managed in the routine postpartum unit. With this evidence-based clinical review, we provide detailed guidance in identifying medical indications for early supplementation and can inform best practices for both birthing facilities and providers.

OM Director's Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong, International Director.

OM Director's Update from Lawrence Tong, International Director

OM Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong, International Director

OM Director's Update by Lawrence Tong, International DIrector

OM Director's Update from Lawrence Tong

OM Director's Update from Lawrence Tong, International director

OM Director's Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong

OM Director's Update from Lawrence Tong, International Director

OM Director's Update from Lawrence Tong

The Education Department wants states to re-submit "equity plans" to ensure that effective teachers are matched with disadvantaged and minority students.

Without rigorous research that accurately reflects the current population, early education won't deliver for all students, write two education researchers.

OM Japan Tsunami April Update

Since it was announced publicly that OM Japan were ready to receive volunteers, many people wrote to express interest and requested for more information. This past week (23 - 27 May), OM Japan took their first volunteer group, consisting of 3 foreigners and 4 Japanese to Miyagi prefecture to help with clearing up rubble and bringing encouragement.

With Pennsylvania Gov. Tom Wolf’s March 25 “Stay at Home” order, Penn State is updating the status of its Abington, Brandywine and Great Valley campuses.

The FIFA Women's World Cup qualifying group stage has begun with the likes of England, Norway, Germany, Iceland and Austria all in goalscoring form.

European champions the Netherlands opened qualifying with a dramatic defeat of Norway as Iceland shocked Germany before being held themselves in October's fixtures.

England, Switzerland, Sweden, Italy, Spain and Finland maintained their perfect records but European champions the Netherlands were held by the Republic of Ireland.