President Biden will travel to Wisconsin on Wednesday to announce the creation of an artificial intelligence data center, highlighting one of his administration's biggest economic accomplishments in a crucial battleground state -- and pointing up a significant failure by his immediate predecessor and 2024 challenger. At a technical college in Racine, Mr. Biden will announce that Microsoft will invest 3.3 billion to build the center, which the tech giant estimates will create 2,300 union construction jobs and 2,000 permanent jobs, according to the White House. The project is part of Mr. Biden's "Investing in America" agenda, which has focused on bringing billions of private-sector dollars into manufacturing and industries such as clean energy and artificial intelligence. In his fourth trip to Wisconsin this year, Mr. Biden will continue an aggressive campaign to paint a contrast between him and former President Donald J. Trump, the presumptive Republican nominee, who is in the fourth week of his criminal trial in connection with payments to a pornographic film star. While in Wisconsin, Mr. Biden will also attend a campaign event, where he will speak to Black voters about the stakes in the election.

JUUL has been called'highly addictive', but the firm may be developing a new product that helps users kick the habit once and for all. The San Francisco company filed a patent that describes an artificial intelligence powered product that delivers fewer nicotine amounts to the user by learning their smoking habits over time. The document highlights a device that alternates between nicotine and a non-nicotine product in order to gradually reduce the intake of the drug. The device may also be connected to a smartphone that could log how much nicotine is being consumed, allowing the device to determine how it should regulate the drug, as first reported on by The Logic. JUUL started off as a way of providing the world's one billion smokers with an alternative to combustible tobacco products. With their goal to completely eliminate smoking, JUUL has now become the number one vapor product in the United States, according to Nielsen.

This note corrects a mistake in the paper "consistent cross-validatory model-selection for dependent data: $hv$-block cross-validation" by Racine (2000). In his paper, he implied that the therein proposed $hv$-block cross-validation is consistent in the sense of Shao (1993). To get this intuition, he relied on the speculation that $hv$-block is a balanced incomplete block design (BIBD). This note demonstrates that this is not the case, and thus the theoretical consistency of $hv$-block remains an open question. In addition, I also provide a Python program counting the number of occurrences of each sample and each pair of samples.

In September of 2017, Governor Scott Walker, Republican of Wisconsin, signed a contract that would make his state the home of the first U.S. factory of Foxconn, the world's largest contract electronics manufacturer. The company, which is based in Taiwan and makes products for Apple, Sony, Microsoft, and Nintendo, among others, would build a 21.5-million-square-foot manufacturing campus, invest up to ten billion dollars in Wisconsin, and hire as many as thirteen thousand workers at an average wage of fifty-four thousand dollars a year. For Walker, whose approval had fallen to the mid-thirties after his aborted Presidential run, the deal was seen as a crucial boost to his reëlection prospects. "The Foxconn initiative looked like something that could be a hallmark of Walker's reëlection campaign," Charles Franklin, a professor and pollster at Marquette University Law School, told me. "He could claim a major new manufacturing presence, one that would also employ blue-collar workers in a region where blue-collar jobs are more scarce than they used to be." The idea of putting the plant in southeastern Wisconsin originated in April of 2017, during a helicopter ride President Donald Trump took with Reince Priebus, a Wisconsin native and Trump's chief of staff at the time. Flying over Kenosha, Priebus's home town, they passed the empty lot that once held the American Motors Corporation plant.