A set of PROC SQL queries that create a view, contain a constant column, contain a computed column, and a create a table do not generate a unique set of rows in the table that is created.

An issue occurs when code contains a complex SQL procedure query with a WHERE clause that contains multiple subselects. Incorrect results might be returned. Click the Hot Fix tab in this note to

PORT OF SPAIN, Trinidad, CMC – The Trinidad-based Caribbean Public Health Agency (CARPHA) is urging people in the region to remember that despite the coronavirus (COVID-19) pandemic, they must be mindful that other public health threats still...

Interview with Ari Nieh, with commentary from Yvonne Lai Like many of us, I began teaching online this Spring. Unlike many of us, I began doing so at the start of the semester. I am co-teaching a class at Michigan … Continue reading →

Military Entrance Processing Stations won't process individuals who have had COVID-19 for military service, even if they've fully recovered from the virus, the Pentagon confirmed this week.

Malaysian squash superstar Nicol David has won a record sixth women's World Open title, overtaking Australia's Sarah Fitz-Gerald.

School districts are competing against each other for purchases of digital devices as remote learning expands to schools across the country.

"A special challenge of hard rock exploration is to identify targets of interest within complex geological settings. Interpretation of the geology can be made from direct geological observations and knowledge of the area, and from 2D or 3D seismic surveys. These interpretations can be developed into 3D geological models that provide the basis for predictions as to likely targets for drilling and/or mining. To verify these predictions we need to simulate 3D seismic wave propagation in the proposed geological models and compare the simulation results to seismic survey data. To achieve this we convert geological surfaces created in an interpretation software package into discretised block models representing the different lithostratigraphic units, and segment these into discrete volumes to which appropriate density and seismic velocity values are assigned. This approach allows us to scale models appropriately for desired wave propagation parameters and to go from local to global geological models and vice versa. Then we use these digital models with forward modelling codes to undertake numerous 3D acoustic wave simulations. Simulations are performed with single shot and with exploding reflector (located on extracted geological surface) configurations" -- Summary.

Paris : M. Huzard, 1820.

Paris : Alcan, 1903.

[Paris?] : [J. Androuet du Cerceau?], [1562?]

São Paulo : Governo do Estado de Sao Paulo, Secretaria da Segurança Pública, 1975.

São Paulo : Serviço Grafíco da Secretaria da Segurança Pública, 1976.

Alexandre Mösching, Lutz Dümbgen.

Source: Electronic Journal of Statistics, Volume 14, Number 1, 24--49.

Abstract:
We consider bivariate observations $(X_{1},Y_{1}),ldots,(X_{n},Y_{n})$ such that, conditional on the $X_{i}$, the $Y_{i}$ are independent random variables. Precisely, the conditional distribution function of $Y_{i}$ equals $F_{X_{i}}$, where $(F_{x})_{x}$ is an unknown family of distribution functions. Under the sole assumption that $xmapsto F_{x}$ is isotonic with respect to stochastic order, one can estimate $(F_{x})_{x}$ in two ways: (i) For any fixed $y$ one estimates the antitonic function $xmapsto F_{x}(y)$ via nonparametric monotone least squares, replacing the responses $Y_{i}$ with the indicators $1_{[Y_{i}le y]}$. (ii) For any fixed $eta in (0,1)$ one estimates the isotonic quantile function $xmapsto F_{x}^{-1}(eta)$ via a nonparametric version of regression quantiles. We show that these two approaches are closely related, with (i) being more flexible than (ii). Then, under mild regularity conditions, we establish rates of convergence for the resulting estimators $hat{F}_{x}(y)$ and $hat{F}_{x}^{-1}(eta)$, uniformly over $(x,y)$ and $(x,eta)$ in certain rectangles as well as uniformly in $y$ or $eta$ for a fixed $x$.

Benjamin Colling, Ingrid Van Keilegom.

Source: Electronic Journal of Statistics, Volume 14, Number 1, 769--800.

Abstract:
Consider the following semiparametric transformation model $Lambda_{ heta }(Y)=m(X)+varepsilon $, where $X$ is a $d$-dimensional covariate, $Y$ is a univariate response variable and $varepsilon $ is an error term with zero mean and independent of $X$. We assume that $m$ is an unknown regression function and that ${Lambda _{ heta }: heta inTheta }$ is a parametric family of strictly increasing functions. Our goal is to develop two new estimators of the transformation parameter $ heta $. The main idea of these two estimators is to minimize, with respect to $ heta $, the $L_{2}$-distance between the transformation $Lambda _{ heta }$ and one of its fully nonparametric estimators. We consider in particular the nonparametric estimator based on the least-absolute deviation loss constructed in Colling and Van Keilegom (2019). We establish the consistency and the asymptotic normality of the two proposed estimators of $ heta $. We also carry out a simulation study to illustrate and compare the performance of our new parametric estimators to that of the profile likelihood estimator constructed in Linton et al. (2008).

Guangyu Zhu, Zhihua Su.

Source: The Annals of Statistics, Volume 48, Number 1, 161--182.

Abstract:
Sparse partial least squares (SPLS) is widely used in applied sciences as a method that performs dimension reduction and variable selection simultaneously in linear regression. Several implementations of SPLS have been derived, among which the SPLS proposed in Chun and Keleş ( J. R. Stat. Soc. Ser. B. Stat. Methodol. 72 (2010) 3–25) is very popular and highly cited. However, for all of these implementations, the theoretical properties of SPLS are largely unknown. In this paper, we propose a new version of SPLS, called the envelope-based SPLS, using a connection between envelope models and partial least squares (PLS). We establish the consistency, oracle property and asymptotic normality of the envelope-based SPLS estimator. The large-sample scenario and high-dimensional scenario are both considered. We also develop the envelope-based SPLS estimators under the context of generalized linear models, and discuss its theoretical properties including consistency, oracle property and asymptotic distribution. Numerical experiments and examples show that the envelope-based SPLS estimator has better variable selection and prediction performance over the SPLS estimator ( J. R. Stat. Soc. Ser. B. Stat. Methodol. 72 (2010) 3–25).

Qiyang Han, Jon A. Wellner.

Source: The Annals of Statistics, Volume 47, Number 4, 2286--2319.

Abstract:
We study the performance of the least squares estimator (LSE) in a general nonparametric regression model, when the errors are independent of the covariates but may only have a $p$th moment ($pgeq1$). In such a heavy-tailed regression setting, we show that if the model satisfies a standard “entropy condition” with exponent $alphain(0,2)$, then the $L_{2}$ loss of the LSE converges at a rate [mathcal{O}_{mathbf{P}}igl(n^{-frac{1}{2+alpha}}vee n^{-frac{1}{2}+frac{1}{2p}}igr).] Such a rate cannot be improved under the entropy condition alone. This rate quantifies both some positive and negative aspects of the LSE in a heavy-tailed regression setting. On the positive side, as long as the errors have $pgeq1+2/alpha$ moments, the $L_{2}$ loss of the LSE converges at the same rate as if the errors are Gaussian. On the negative side, if $p<1+2/alpha$, there are (many) hard models at any entropy level $alpha$ for which the $L_{2}$ loss of the LSE converges at a strictly slower rate than other robust estimators. The validity of the above rate relies crucially on the independence of the covariates and the errors. In fact, the $L_{2}$ loss of the LSE can converge arbitrarily slowly when the independence fails. The key technical ingredient is a new multiplier inequality that gives sharp bounds for the “multiplier empirical process” associated with the LSE. We further give an application to the sparse linear regression model with heavy-tailed covariates and errors to demonstrate the scope of this new inequality.

Kerstin Spitzer, Marta Pelizzola, Andreas Futschik.

Source: The Annals of Applied Statistics, Volume 14, Number 1, 202--220.

Abstract:
Evolve and resequence studies provide a popular approach to simulate evolution in the lab and explore its genetic basis. In this context, Pearson’s chi-square test, Fisher’s exact test as well as the Cochran–Mantel–Haenszel test are commonly used to infer genomic positions affected by selection from temporal changes in allele frequency. However, the null model associated with these tests does not match the null hypothesis of actual interest. Indeed, due to genetic drift and possibly other additional noise components such as pool sequencing, the null variance in the data can be substantially larger than accounted for by these common test statistics. This leads to $p$-values that are systematically too small and, therefore, a huge number of false positive results. Even, if the ranking rather than the actual $p$-values is of interest, a naive application of the mentioned tests will give misleading results, as the amount of overdispersion varies from locus to locus. We therefore propose adjusted statistics that take the overdispersion into account while keeping the formulas simple. This is particularly useful in genome-wide applications, where millions of SNPs can be handled with little computational effort. We then apply the adapted test statistics to real data from Drosophila and investigate how information from intermediate generations can be included when available. We also discuss further applications such as genome-wide association studies based on pool sequencing data and tests for local adaptation.

The reaction on social media has been fierce.

A guide to the tech gadgets even your hard-to-shop-for friends and family members will love.

Here’s where you can snag their Alo Yoga Moto leggings for less.

You've got exactly four hours left to take advantage of these heavily discounted prices.

Meghan Markle is also a fan of the comfy shoes.

You can save 50% right now. 

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

Keep your feet happy this winter.

French translation of "Frequently asked questions on market risk capital requirements" by the Basel Committee, March 2018.

French translation of BIS Papers No 99 - Central banks and debt: emerging risks to the effectiveness of monetary policy in Africa?, October 2018.

French version of BIS Press Release - Big tech in finance: opportunities and risks, 23 June 2019

The specimen may be the earliest known example of a squid-like creature on the attack

<span class="topsy_trackback_comment"><span class="topsy_twitter_username"><span class="topsy_trackback_content">Squeekville, model train amusement park, on display at Children's ...: Squeekville, model train amusement park, ... http://bit.ly/9x4oFS</span></span>

Squarespace offers numerous useful tools for building attractive, functional sites for personal and small business use. Users will need to rebuild their sites if they want to upgrade to the latest version of the service, however.

Rex from the USA, volunteered for two months in the Baseball and Softball Programme alongside OMers Terry Lingenhoel and Suzanne Cole this spring.

IRAQ’S prime ministerial merry-go-round continues to spin apace. Spy chief Mustafa al-Kadhimi, director of the country’s National Intelligence Service, is now the third prime minister designate this year, following the withdrawal of the two previous prospective candidates.

UEFA's technical observers have selected their all-star squad from the 2018/19 UEFA Women's Champions League.

Le 20 août, Pierre Nkurunziza a été investi pour la troisième fois. Son investiture, annoncée le matin même, a eu lieu presque en catimini et les ambassadeurs européens et américains accrédités à Bujumbura étaient visiblement absents tout comme l’Union africaine. La multiplication des assassinats en août a conduit la présidence à organiser l’investiture à la sauvette.

As the knockout stage kicks off this week, The Scout has put together a squad drawing on players from nine teams.

Home advantage could be key with 13 of the 15 players in The Scout's squad playing second legs on their own ground.

On Sunday, Nov. 19, The Old State House will host an engaging historical dramatic production, John Dickinson and Thomas Jefferson Debate Independence: “We have called by different names brethren of the same principle,” presented by the American Historical Theatre of Philadelphia.

US-based Franklin Templeton on Friday issued an apology to capital market regulator Securities and Exchange Board of India (Sebi) for any misunderstanding over the closure of six of its schemes in the...