When a retailer operates at Walmart 's (NASDAQ: WMT) scale, it takes a lot to move the financial needle meaningfully. But the company's recent decision to raise membership prices at its Sam's Club warehouse chain serves as a useful reminder of how its underlying business model is evolving so that it can keep raising the bar despite its massive size. Beginning May 1, the cost of a standard Sam's Cl...
When a retailer operates at Walmart 's (NASDAQ: WMT) scale, it takes a lot to move the financial needle meaningfully. But the company's recent decision to raise membership prices at its Sam's Club warehouse chain serves as a useful reminder of how its underlying business model is evolving so that it can keep raising the bar despite its massive size. Beginning May 1, the cost of a standard Sam's Club membership will increase from $50 to $60 annually, while the premium Plus tier will rise from $110 to $120. While a $10 increase might not seem important to the bull case for Walmart stock, it points to a broader strategic transition for the company: Walmart is increasingly relying on higher-margin, faster-growing revenue streams to enhance its growth story. Image source: The Motley Fool. Continue reading
Nature 最新发表了一篇题为 General scales unlock AI evaluation with explanatory and predictive power(通用量表解锁兼具解释力与预测力的 AI 评估)的研究论文。研究团队由来自普林斯顿大学、剑桥大学、微软研究院、OpenAI、DeepSeek、Meta、瓦伦西亚理工大学等机构的 26 位名学者和工程师。 第一作者和通讯作...
Nature 最新发表了一篇题为 General scales unlock AI evaluation with explanatory and predictive power(通用量表解锁兼具解释力与预测力的 AI 评估)的研究论文。研究团队由来自普林斯顿大学、剑桥大学、微软研究院、OpenAI、DeepSeek、Meta、瓦伦西亚理工大学等机构的 26 位名学者和工程师。 第一作者和通讯作者周乐鑫在身份信息中同时注明了四家机构:普林斯顿、剑桥大学、微软亚洲研究院和瓦伦西亚理工大学。通讯作者则包括微软亚洲研究院谢幸和剑桥大学 José Hernández-Orallo。 这是近年来规模最大、系统性最强的 AI 评估方法论研究之一。 两年两篇 Nature,第一作者是个 00 后 这已经是周乐鑫 两年之内,第二次在 Nature 上发表论文了 。 2024 年 9 月,年仅 23 岁的周乐鑫作为第一作者在 Nature 发表了他的第一篇论文:Larger and more instructable language models become less reliable(更大且更易于指导的语言模型变得不那么可靠了)。 这篇论文抛出了一个让当时整个 AI 圈都炸锅了的结论: 更大、更新的 AI 模型,反而更不可靠 。当时他和团队分析了 GPT、LLaMA、BLOOM 等多个主流 AI 模型系列,发现随着模型规模变大并加入更多人类反馈训练,它们在回答用户问题时反而变得更容易给出错误答案。更诡异的是,新一代模型(如 GPT-4)在面对超出自己能力范围的问题时,不再像老模型那样“知道自己不会”而选择回避,而是更倾向于硬着头皮给出错误答案。研究者把这种现象称为“过度自信”。 这篇论文一经发表,立即引发热议,仅 Reddit 上就有超过 20 万网友围观讨论。 刚发的这篇新论文说了什么? 继上次论文发表不到一年,周乐鑫带着他的第二篇 Nature 论文回来了。这次,他不再只是指出问题,而是提出了一套完整的解决方案。 这次的论文标题是《通用量表解锁 AI 评估的解释力和预测力》,论文一开篇就指出了一个根本性问题: 现有的 AI 评估方式,就是让 AI 做题然后打分,其实根本说不清 AI 到底“有什么能力” 。 比如你看到某个 AI 在数学测试上考了 90 分,这个数字能告诉你...
adventtr/iStock via Getty Images El Dorado Gold Update Data by YCharts El Dorado Gold ( EGO ) is a name I've covered on Seeking Alpha for n early a decade on Seeking Alpha . Well, some things never change: this is still a company with strong assets that the market isn't giving it enough credit for, held back by previous permitting delays in Greece, and a stock that is well overdue for a re-rating....
adventtr/iStock via Getty Images El Dorado Gold Update Data by YCharts El Dorado Gold ( EGO ) is a name I've covered on Seeking Alpha for n early a decade on Seeking Alpha . Well, some things never change: this is still a company with strong assets that the market isn't giving it enough credit for, held back by previous permitting delays in Greece, and a stock that is well overdue for a re-rating. Several catalysts are finally here. For one, Skouries is just months away from first production, while mines like Lamaque keep on delivering. Yet, the stock still trades at a discount to many of its peers. Eldorado reminds me of B2Gold ( BTG ) in many ways, as they're both mid-tier gold miners currently trading at very low price-to-earnings multiples, with clear 2026 catalysts potentially leading to a re-rating of their stocks. The difference in the two names is jurisdiction risk and growth outlook. B2Gold continues to work through a messy year with problems in Mali and ramp-up issues at the Goose mine, while El Dorado works through bringing the Skouries project into production and growing total mine output 40% over the next two years. Finding this combination of growth and cheapness in the same stock doesn't happen too often. The company also has strong momentum, recently delivering strong 2025 results with production at the upper-end of its guidance. More promising is the fact that Q4 was its best quarter of the year, with earnings per share of $.63 beating analysts' estimates of $.60. And, with gold around $4,700/oz currently, its cash flow is off the charts. Here's a summary of why I think El Dorado Gold is a BUY at current prices. The Growth Pipeline Changes Everything El Dorado Gold I've been a follower of the Skouries project for years, and have always loved the upside potential, especially its potential to produce metals at super-low costs. It's hard to believe that it might finally be in production soon. I'll admit, there were times in the past when I wondered if ...
Korean Air said on Friday it will faithfully respond to legal procedures in the United States, where a lawsuit was filed in Virginia on behalf of the estate of Porscha Tynisha Brown, who died at age 33 in March 2024, during a flight from Washington to Incheon operated by the airline. Burns Charest, the law firm representing the complainants, claimed her death resulted from a series of critical fai...
Korean Air said on Friday it will faithfully respond to legal procedures in the United States, where a lawsuit was filed in Virginia on behalf of the estate of Porscha Tynisha Brown, who died at age 33 in March 2024, during a flight from Washington to Incheon operated by the airline. Burns Charest, the law firm representing the complainants, claimed her death resulted from a series of critical failures by Korean Air flight personnel. According to the complaint, Brown experienced sudden...
格隆汇4月3日|由于中东战争导致燃料市场陷入动荡,日本至少两家最大的电力零售商已暂时停止接受新的工业客户,以待市场明朗。为日本首都提供气电服务的东京瓦斯发言人表示,受持续冲突影响采购成本,公司已从3月6日起暂停接受新的工业用电客户,目前尚未决定何时恢复。此外,石油巨头引能仕控股旗下的电力零售部门Eneos Power Corp,也已在其官网宣布暂停接受工业新客户的申请。上述限制仅适用于高压工业用户...
格隆汇4月3日|由于中东战争导致燃料市场陷入动荡,日本至少两家最大的电力零售商已暂时停止接受新的工业客户,以待市场明朗。为日本首都提供气电服务的东京瓦斯发言人表示,受持续冲突影响采购成本,公司已从3月6日起暂停接受新的工业用电客户,目前尚未决定何时恢复。此外,石油巨头引能仕控股旗下的电力零售部门Eneos Power Corp,也已在其官网宣布暂停接受工业新客户的申请。上述限制仅适用于高压工业用户,两家公司仍继续接受低压家庭用户的申请。