[social4i size="small" align="align-left"][This article was first published onpacha.dev/blog, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Dear fellow developers and data scientists,If everyone reading this gave just the price of a coffee, I could focus fully on the open source work that serves our community. But not everyone can or will contribute, and that’s okay.Why I’m Writing ThisFor the past several years, I’ve dedicated myself to creating and maint ...继续阅读 (26)

GPT 5 推出之后大家照例让它算 10.9 和 10.11 的差。它照例失败了，成了新一轮笑柄。倒是真的实现了传说中的 Ph.D level，因为博士生一般来说算术都不好。当然这不是它一家的问题，别家 AI 也在这个简单的题目上纷纷翻车，包括我很喜欢用的 Gemini Pro 2.5。但 Gemini 翻车的姿势还要更炫酷一点：作为一款思维链模型，它知道这种时候应该调用 Python 来算。但当 Python 返回了正确结果之后，它的反应居然是：「我觉得 Python 算的不对，还是我自己来心算好了。」然后算错了。这个错误虽然好笑，但暴露的是这一整轮 agentic AI 发展的致命弱点。Agentic AI 作为一个框架要能运行，前提条件是 AI 知道什么时候该使用并依赖外部工具。当然，这里的分界是模糊的：一个小孩子如果在算三位数乘法的时候掏出计算器，你不会批评。如果这个小孩算一位数乘法也要用计算器，你会怀疑是不是智力有点问题——当然无论如何至少结果是对的，但你会心想一个高级一点的大脑是不是应该合理判断这个问题不值当用外部工具。而现在的问题是这个小孩算一位数乘法，掏出计算器算了个结果，然后觉得不对扔掉了，自己心算了一个错误的答案出来。这是人类有可能犯的错误吗？其实也是。而且如果你细想，这恰恰是非常「人类」的错误。人类的思维之所以不可靠，就是因为我们常常把直觉凌驾于客观证据之上。 ...继续阅读 (23)

[social4i size="small" align="align-left"][This article was first published onpacha.dev/blog, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Shiny allows to use all of R to visualize information, no matter if it is a sophisticated statistical model or a simple plot. One of the features it does not provide out-of-the-box is adding the selected parameters to the URL, like this:https://pacha.dev/palmerpenguinsshiny?inputs&species;="Adelie"&island;="Torgersen"I ...继续阅读 (21)

[social4i size="small" align="align-left"][This article was first published onAshley's Blog, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.I have been working on a project where we have been unable to use {shinytest2}, and therefore have had a heavy reliance on thetestServerfunction on testing the reactive functionality in each of the modules. Whilst it is great for checking the server-side logic based on dummy inputs being clicked, orreactiveValuesb ...继续阅读 (25)

[social4i size="small" align="align-left"][This article was first published onDataGeeek, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.In the second quarter, Coinbase did not meet Wall Street’s expectations. This decline occurred alongside lower market volatility, despite BTC prices reaching record highs according to Kaiko Research.The chart below indicates that the market priced the aforementioned from August. We can observe a negative decoupling between ...继续阅读 (22)

[social4i size="small" align="align-left"][This article was first published onBoyd Tarlinton, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.R offers excellent facilities for working interactively with SQL databases on a remote server. It becomes more challenging to do so in a self-contained Quarto document, especially if you wish to be able to render it without running into errors. Fortunately, there are ways around these challenges.The first step is estab ...继续阅读 (27)

[social4i size="small" align="align-left"][This article was first published onJason Bryer, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Most predictive modeling strategies require there to be no missing data for model estimation. When there is missing data, there are generally two strategies for working with missing data: 1.) exclude the variables (columns) or observations (rows) where there is missing data; or 2.) impute the missing data. However, data i ...继续阅读 (24)

[social4i size="small" align="align-left"][This article was first published onThe Jumping Rivers Blog, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Shiny in Production Conferencewouldn’t be possible without our sponsors, so we wanted to take the time to tell you a little bit about them.Don’t miss out on this great chance to learn from R experts and network with fellow data science enthusiasts! Tickets are available atShiny in Production website!PositPosit ...继续阅读 (26)

此《龙门造像千种》全套共十册，收录龙门石窟中南北朝到明代诸多造像、铭文或图案拓片，这些拓片大多是局部或零散片段，且没有文字说明。其装帧有一页多种（数量不等）或多页一种。此套拓片大约制作于清末民初，现藏于东京大学图书馆。 ...继续阅读 (29)

[social4i size="small" align="align-left"][This article was first published onJason Bryer, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Cluster analysis is a statistical procedure for grouping observations using an observation-centered approach as compared to variable-centric approaches (e.g. PCA, factor analysis). Whether a preprocessing step for predictive modeling or the primary analysis, validation is critical for determining generalizability across d ...继续阅读 (28)

[social4i size="small" align="align-left"][This article was first published ondatascienceconfidential - r, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.I’m going to discuss some horrifying ideas in this post, so let’s begin with some good news!I’vepreviously studiedtech layoffs. According to my main source of datalayoffs.fyi, the weekly number of layoffs has been steadily declining. In the US, this has been compensated by a huge number of layoffs in the g ...继续阅读 (29)

看似不带任何“市场偏见”的风险平价模型本身已构成一个明确的观点：四种不同经济情景在未来发生的概率相等，谁能轻易能下这一定论或做这一假设？前言市面上有很多讲关于全天候策略和风险平价模型如何运作的研报，它们大多是在基于不同资产的历史波动率和协方差矩阵的近似实现，本文批判均值-方差的优化方法。回测结果能说明什么？选取国内A股市场能买到的投资标的，其中大部分标的都使用挂钩指数表示，剔除了分红、管理费、基金折溢价等无关因素，回测结果更保守（黄金ETF可以替代成黄金T+D价格）。数据周期：2020年9月30日-2025年7月31日风险指标：投资品种过去半年的历史波动率和不同资产之间的协方差矩阵三个策略：象限间风险平价、象限间最大化夏普比例、象限内最大夏普+象限间风险平价回测设定：交易费用万分之二，夏普比例的无风险利率是年化1.5%，没有考虑期间内任何分红收益，持仓不超过100%总资产各类资产的收益率情况不同资产之间协方差矩阵根据这个协方差我们可以把资产分割成几组相对独立的资产：黄金、国债、商品、红利、国内宽基、海外宽基。我根据国内资本市场的情况，毕竟基于构建中国版全天候策略的想法，所以在象限设置时候海外宽基更多基于避险和分散的目的，把资产类别添加到四个象限：超预期通胀+超预期增长（过热）：国内宽基、商品超预期通胀+增长不及预期（滞胀）：黄金、商品、海外宽基、红利通胀不及预期+超预期增长：国内宽 ...继续阅读 (33)

[social4i size="small" align="align-left"][This article was first published onpharmaverse blog, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.------------- typical setup ---------------------------- post begins here ---------------A Centralized Metadata Object Focus on Clinical Trial Data Programming Workflows • metacore{metacore}and GitHub – pharmaverse/metatools{metatools}have a new package maintainerHi, everyone! I’mLiamand I’m excited to announc ...继续阅读 (17)

[social4i size="small" align="align-left"][This article was first published onDataGeeek, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Morgan Stanley analysts believe that the One Big Beautiful Bill will be a boon for Big Tech, as it will provide a cash influx to AI giants, thereby enhancing their dominance in future AI competitions.But Trump’s 1 August tariffs, which compensate for tax cuts in the aforementioned bill, seemed not to benefit the tech firms, ...继续阅读 (27)

[social4i size="small" align="align-left"][This article was first published onChris Bowdon, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Time to finally patch a hole in the leaky roof of my knowledge: what are Generalised Linear Models anyway?Groundwork: what are Linear Models anyway?Generalised Linear Models (GLMs) are a short step from Linear Models,provided you have the right understanding of linear models. There’s also some stats jargon to get a handl ...继续阅读 (30)

[social4i size="small" align="align-left"][This article was first published onAlbert Rapp, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Shiny in a NutshellVideoCheckout the full R-Shiny playlist herePLAYLISTCodePress to unfold codelibrary(shiny) ui <- bslib::page_fluid( sliderInput( 'my_slider', # Input ID 'Select your number', # Input label # Input-specifc stuff min = 0, max = 1, value = 0.5, step = 0.1 ), selectInput( ...继续阅读 (32)

[social4i size="small" align="align-left"][This article was first published onjakub::sobolewski, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Your code often relies on external systems—LLMs, APIs, databases, or third-party libraries. While these are essential for functionality, they don’t need to be part of your tests.Here’s a practical pattern to test your code without relying on external dependencies, so your tests remain fast, reliable, and cheap.Check ...继续阅读 (32)

[social4i size="small" align="align-left"][This article was first published onStencilled, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Introducing AMI – Adaptive Media Intelligence, a platform that democratizes data access through conversational analytics, interactive dashboards, and AI-powered insights.Toleave a commentfor the author, please follow the link and comment on their blog:Stencilled.R-bloggers.comoffersdaily e-mail updatesaboutRnews and ...继续阅读 (27)

[social4i size="small" align="align-left"][This article was first published onThe Jumping Rivers Blog, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.In this blog post, we are going to use data from the{gapminder}R package, along with global spatial boundaries from‘opendatasoft’. We are going to plot the life expectancy of each country in the Americas and animate it to see the changes from 1957 to 2007.The {gapminder} package we are using is from theGapmind ...继续阅读 (35)

In a bustling city like Sydney, maintaining a clean and hygienic environment is crucial for business success. While every industry can benefit from professional cleaning, certain sectors see more significant advantages from dedicated services. Whether you operate in Menai, Merrylands, or anywhere else across the region, understanding how tailored cleaning can impact your industry is […]The postIndustries That Benefit Most from Commercial Cleaning in Sydneyappeared first onJ L I Blog. ...继续阅读 (9)

[social4i size="small" align="align-left"][This article was first published onForwards, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Forwards members Heather Turner and Ella Kaye were invited to attend the “Data Science for Girls” open event hosted byR-GirlsatGreen Oak Academy, Birmingham, UK on July 9 2025. They joined other guests fromAscentandHealth Data Research UKto find out how students at this girls’ school have been using R.From left to right: Yan ...继续阅读 (30)

“诗馀”也就是词。此《诗馀画谱》（又名《草堂诗馀意》）由明末宛陵汪氏辑。全不分卷，其内容撷取南宋《草堂诗馀》书中精粹的唐宋词百篇，请名家书翰，徽派名家摹刻历代名家作品为之配图，一词一图，相映成趣。此为绍兴图书馆藏明万历四十年宛陵汪氏刊本（残七十二幅）。 ...继续阅读 (37)

[social4i size="small" align="align-left"][This article was first published onjakub::sobolewski, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.When writing specifications, it’s easy to get caught up in implementation details, especially when adding specifications after the software was built.Let’s see how we can add specifications for existing code and get Cucumber specifications that reflect business concepts rather than UI specifics that makes extension ...继续阅读 (30)

[social4i size="small" align="align-left"][This article was first published onR Works, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.1. Introduction1.1. The use of AI agents and the case for “prompt” choicesWeintroducedthe use of the AI pair programmer, Copilot, while working withtidyverse. In this post, we walk the reader through the fundamental driver of successfully using AI agents – prompting. Prompting is the method of instructing an LLM to perform a ...继续阅读 (32)

[social4i size="small" align="align-left"][This article was first published onR Works, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.In June, one hundred twenty-three new packages made it to CRAN. Here are my Top 40 picks in twenty-one categories: AI, Chess, Computational Methods, Data, Decision Analysis, Ecology, Epidemiology, Finance, Genomics, Linguistics, Machine Learning, Mathematics, Medical Statistics, Music Theory, Networks, Programming, Statistics ...继续阅读 (29)

[social4i size="small" align="align-left"][This article was first published onR on Biofunctor, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.In this week’s episode of the “Hidden Monads in R” series, I’ll explore the vector aspect of R data structures, and see how the flatmap operation can be quite useful.Flatmap? Aren’t all maps flat?The Nobel Prize organisation providesan APIwith information about the prizes and laureates. We can retrieve a JSON file, wh ...继续阅读 (32)

嵩山为五岳之“中岳”。此《中岳图》册由清人绘制。全册共十二开，依次描绘无名寺、中岳庙、少林寺、龙泉寺、会善寺、法王寺、嵩岳寺、莲花峰、少阳河、轘辕关、嵩山南面、北面等景点。画山中胜景古迹，同时写明方位或景点。此册现藏于台北故宫博物院。 ...继续阅读 (30)

[social4i size="small" align="align-left"][This article was first published onjakub::sobolewski, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.From my experience, LLMs are much better at writing JavaScript code than they are at writing R code at the moment.I wanted to check how well Copilot does with refactoring existing Playwright and Cucumber test code.Refactoring existing test codeBefore refactoring, I had a single step definition file that contained al ...继续阅读 (31)

[social4i size="small" align="align-left"][This article was first published onR-posts.com, and kindly contributed toR-bloggers]. (You can report issue about the content on this pagehere)Want to share your content on R-bloggers?click hereif you have a blog, orhereif you don't.Join our workshop onEfficient R – How to write faster code, which is a part of our workshops for Ukraine series!Here’s some more info:Title:Efficient R – How to write faster codeDate:Thursday, August 28th, 18:00 – 20:00 CEST (Rome, Berlin, Paris timezone)Speaker:Selina Baldauf, Selina is a theoretical ecologist and a scie ...继续阅读 (27)

此《少林寺志》由清代叶封、焦钦宠等采辑，施奕簪、焦如蘅等续编。这是历史上第一部关于少林寺的专志。全书不分卷，内容包含：绘图、形胜、营建、古迹、祥异、艺林、题咏等内容。此为清乾隆十三年刊本。 ...继续阅读 (34)