Исследовательский прототип на бесплатной Tesla T4 в Google Colab. Не медицинское изделие.
Я обучил нейросеть искать кровоизлияния на КТ головы в бесплатном Google Colab. На первом фолде получил AUC 0.963 и обрадовался. После полной проверки осталось 0.931. А потом выяснилось, что модель, которая видит только костное окно, где мозга почти не видно, всё равно даёт AUC 0.86. В статье разбираю, откуда берутся такие цифры, что показывают маски врачей.
Читать далееRepublican senator faces critical re-election battle in state where president’s trade war has outraged voters
Donald Trump dropped some of the US’s tariffs on Canada on Friday to “better serve the public interest” the White House said, handing a win to Susan Collins, the embattled Republican senator for Maine, as she faces a tight re-election campaign that will help determine whether Democrats can flip control of Congress.
Collins announced that the exemptions would apply to nine agricultural products, including blueberries, potatoes, apples and seaweed. She added that many of the state’s farmers rely on specialized equipment and materials from across the border that are “unavailable from American suppliers or cannot be replaced without incurring significant expense”.
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Каждый раз, когда вы видите, как яблоко само отрывается от ветки, оно падает вниз. Поэтому вы утверждаете, что существует закон физики: яблоки падают с деревьев вниз. Но откуда вы можете это знать? Ведь завтра вам может встретиться яблоко, которое упадёт вверх. Как вообще возможна наука? Как нетрудно догадаться, философы немало размышляли над этим вопросом. Бренден Фителсон объясняет, как более глубокое понимание вероятности помогает определить, действительно ли новые данные подтверждают наши убеждения.
Бренден Фителсон получил докторскую степень по философии в Висконсинском университете в Мадисоне. Сейчас он занимает должность заслуженного профессора философии Северо-Восточного университета. Он один из основателей семинара по формальной эпистемологии (Formal Epistemology Workshop) и лауреат премии Wolfram Innovator Award за 2020 год.
Читать далееWashington's 3rd Congressional District is home to a tight race that will help determine the balance of power in the U.S. House.
Итан Сигел (американский астрофизик‑теоретик и научный журналист, автор рубрики «Спросите Итана», один из пропагандистов современных научных знаний), сравнил человеческое тело и... Вселенную. Получилось занятно, и с множеством интересных картинок при минимуме слов (статья вышла в рубрике «Почти безмолвный понедельник» (Mostly Mute Monday): астрономические истории в картинках и не более чем 200 словах.)
@avshkol сделал перевод этих 200 слов, и бережно скопировал и вставил все 20 интересных картинок. Для всех, кто любит рассматривать познавательные картинки.
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In early August, Sagi Tzadik asked an AI agent to take a security flaw it had found in WordPress and see whether the same weakness could be made to work against Drupal, another popular content management system. Eight hours later, the agent reported that it had failed. Then it added that, in the course of trying, it found a flaw in PHP, the programming language on which both systems—and as much as 70% of the web—depend.
Tzadik, a security researcher at cybersecurity firm Wiz, assumed that the AI had made a mistake. “Models tend to hallucinate,” he tells TIME. But the exploit, which took advantage of a weakness that had gone undetected for more than a decade, worked.
Unbeknownst to Wiz’s team, researchers at another cybersecurity firm, Calif—working with OpenAI—had used AI to find a related flaw. It suggests that once AI reaches a certain capability level, it is a matter of time before some longstanding weaknesses are unearthed. AI companies have been trying to ensure that defenders including Wiz and Calif get there first by giving them early access to new AI models before the equivalent capabilities trickle down to malicious users. This time, it worked.
The episode offers a glimpse into a new phase in cybersecurity in which AI helps defenders find vulnerabilities while giving them less time to fix them. While the bugs’ announcement has prompted alarm of a much-speculated “cyber-apolocalyse”—in which AI discovers world-melting bugs, plunging society into chaos—those who helped discover it are optimistic. “We are fixing vulnerabilities at an unprecedented rate, and this is doing security overall a very good thing,” Tzadik says.
But the details reveal just how close things came to disaster. Word of the vulnerabilities began circulating online two days before the patch’s scheduled release, prompting PHP’s maintainers to bring it forward by a day. Hours later, with the patch still unavailable, Calif mistakenly posted a video showing its exploit at work, and copycat attempts multiplied. Cloudflare counted thousands before the public announcement, tens of thousands within 45 minutes of it, hundreds of thousands within two hours, and eventually millions. Even after the patch was released, many webpages, including those of government agencies and parts of Wikipedia, were taken down as a precaution as security teams scrambled to install the update.
“If it had leaked a month earlier,” before a patch was ready, “this would have been a very different situation,” says Tomer Schwartz, CTO of exposure management and appsec at Wiz.
That a patch was prepared was the result of a loosely organized sprint. After Calif and Wiz sent reports to PHP, the groups joined forces. Researchers from competing companies shared their findings in common channels, with no contracts governing the arrangement. Over the following weeks, the group of roughly 15 people spoke almost daily to trace the vulnerabilities to their common source and devise a fix. The process, Schwartz says, was “just based on trust.”
That process will have to sustain increasing pressure. OpenAI has said that the PHP bugs were among “several significant vulnerabilities we’ve already found and are working to fix,” and predicted that similar discoveries would “increase sharply in the coming months.” As those findings multiply, so will the number of dangerous secrets waiting for fixes. “We have to rethink all of our processes, all of our methods, all of our tech stack … to be able to keep up the pace against attackers,” Schwartz says.
Though defenders are being given a head start, they face a disadvantage of another sort. Attackers only have to succeed once. “But, as defenders, we need to make sure that every single vulnerability is covered,” Schwartz says.
AI is helping defenders find those vulnerabilities first. Previously, testing suspected bugs could take weeks, forcing researchers to prioritize which were most promising. But now AI agents allow researchers to test many ideas at once, Tzadik says. “It’s months of traditional research condensed to, like, days—couple hours to days, really.”
But even with AI, the process is labor intensive. After the agent helped Wiz uncover the PHP vulnerability, it still couldn’t describe how the bug worked, Tzadik says. Its explanations were “just slop.” He and colleagues spent days untangling the cause of a bug and eventually reproducing it.
Cost is another constraint. Joshua Saxe, Meta’s former AI security tech lead, who left in February to co-found Abundance Security says he’s working with an organization that has spent roughly $1 million using Anthropic’s Mythos to identify bugs, adding that more bugs remain.
“As an industry, I think we’re deer in the headlights right now,” Saxe says.
"In the climate that we’re in today, you have to do cybersecurity well. It’s not an option to kind of half-a-- it,” says Adam Meyers, senior vice president of counter adversary operations at CrowdStrike. But even a successful exploit offers further opportunities for defenders to intervene. “Exploits are going to happen, and that’s not the end of the story,” he says. “It’s the beginning of the attack.”
American, 21, wins world all-around title in Rotterdam
Blakely ruptured achilles before 2024 Olympic trials
First US champion since Simone Biles three years ago
Skye Blakely completed a sensational comeback from a ruptured achilles tendon to win the women’s all-around title at the world gymnastics championships in Rotterdam on Friday, claiming the biggest individual prize in the sport outside the Olympics.
The 21-year-old American scored 55.733 points across four apparatus to finish ahead of Russia’s Liudmila Roshchina (55.199), with China’s Ke Qinqin taking bronze (55.032).
Continue reading...Republican senator faces critical re-election battle in state where president’s trade war has outraged voters
Donald Trump dropped some of the US’s tariffs on Canada on Friday to “better serve the public interest” the White House said, handing a win to Susan Collins, the embattled Republican senator for Maine, as she faces a tight re-election campaign that will help determine whether Democrats can flip control of Congress.
Collins announced that the exemptions would apply to nine agricultural products, including blueberries, potatoes, apples and seaweed. She added that many of the state’s farmers rely on specialized equipment and materials from across the border that are “unavailable from American suppliers or cannot be replaced without incurring significant expense”.
Continue reading...Justin Craig charged with official misconduct and fraud, after searching plates of wife and ‘previous acquaintance’
An Indiana police officer has been arrested on allegations that he misused Flock cameras hundreds of times in a case involving his wife and a previous acquaintance of hers.
Justin Craig of Georgetown police department, was charged with official misconduct and two counts of fraud. Documents show that he searched his wife’s license plate more than 80 times and that of a “previous acquaintance” of hers nearly 250 times, the news outlet WLKY reported.
Continue reading...Steelers, Saints still on for NFL’s Paris debut on Sunday
Violent protests prompt US security warning for fans
PSG cancel Sunday match amid escalating Paris unrest
The NFL would have cancelled its first regular-season game in Paris, scheduled for Sunday, if the situation were unsafe, Pittsburgh Steelers quarterback Aaron Rodgers said on Friday, referring to the recent protests in the French capital.
France experienced some of its worst urban unrest in years last weekend, prompting President Emmanuel Macron to tighten restrictions on protests on Thursday amid fears that demonstrations planned for Saturday could turn violent.
Continue reading...Gunman opens fire from car in Trappes and Verrière, killing one and injuring five others, including a 12-year-old girl
Emmanuel Macron has condemned racism in French society after a gunman opened fire from a car west of Paris on Friday, killing one person, wounding a 12-year-old girl and injuring four others in what the president called a “racist terrorist attack”.
Macron arrived at the scene of the drive-by shooting in Trappes on Friday night, saying he was deeply saddened by what he called the “premeditated” attack. The 12-year-old girl, who was shot eight times, is being treated in hospital.
Continue reading...Gunman opens fire from car in Trappes and Verrière, killing one and injuring five others, including a 12-year-old girl
Emmanuel Macron has condemned racism in French society after a gunman opened fire from a car west of Paris on Friday, killing one person, wounding a 12-year-old girl and injuring four others in what the president called a “racist terrorist attack”.
Macron arrived at the scene of the drive-by shooting in Trappes on Friday night, saying he was deeply saddened by what he called the “premeditated” attack. The 12-year-old girl, who was shot eight times, is being treated in hospital.
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The Pentagon is building weapons and projects with AI capabilities that officials say don't always closely adhere to the agency's own guidelines for AI, according to a congressional watchdog report published in October.
(Image credit: Government Accountability Office)
Any player will be eligible for High Impact Player status
Requirements had included top 100, marketability lists
Sides also resolve grievance on Rodman contract refusal
The NWSL and the NWSL Players Association have reached a settlement to drop the restrictive criteria around the controversial High Impact Player (HIP) rule, allowing any player to earn the league’s highest salaries.
The NWSL introduced the rule late last year, allowing teams to spend an additional $1m above the salary cap to sign star players. Players with the designation had to meet one of eight criteria, ranging from US national team minutes and Ballon d’Or recognition to NWSL Best XI honors to media lists, including the Guardian’s Top 100 and a ranking that ordered athletes by marketability.
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