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Introduction to the A* Algorithm (2014)

news.ycombinator.com Patel 2026-03-11 08:25:23

Created 26 May 2014, updated Aug 2014, Feb 2016, Jun 2016, Jun 2020, Jul 2023 Graph search algorithms let us find the shortest path on a map represented as a graph. Move the blob (start point) and cross (end point) to see the shortest path found by the A* Algorithm: A* is one of a family of related graph search algorithms: Breadth First Search[1] explores equally in all directions. Dijkstra’s Algorithm[2] takes into account movement costs. A*[3] explores more towards a single destination. In ad

Topics: current frontier graph path start

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Yes I Will Read Ulysses Yes

news.ycombinator.com Eric Bulson 2026-03-13 09:31:25

When Richard Ellmann’s James Joyce hit the shelves in 1959, the sheer size of the book (842 pages, 100 longer than Ulysses ) was as dazzling as the degree of detail. Joyce, who had been dead for 18 years, vividly inhabited its chapters, getting drunk, going blind, spending money, spiting enemies, cogitating, and, of course, creating a series of works that immediately made literary history. Moving briskly across the first half of the 20th century (not just a single day in Dublin), Ellmann spun a

Topics: biography book ellmann james joyce

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Elon Says He’s Working to ‘Fix’ Grok After AI Disagrees With Him on Right-Wing Violence

gizmodo.com Matt Novak 2026-03-13 09:05:03

Billionaire conspiracy theorist Elon Musk really doesn’t like it when Grok says anything that contradicts his far-right worldview. And that’s exactly what his AI chatbot did late Tuesday when an X user asked whether people on the political right or the political left have been more violent since President Donald Trump was first elected in 2016. Grok said it was people on the right. Musk responded that he was working to fix Grok so it wouldn’t do that again. It all started on Tuesday in a tweet

Topics: grok left like musk right

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Spanish blackout report: Power plants meant to stabilize voltage didn’t

arstechnica.com Unknown 2026-03-13 09:15:24

The blackout that took down the Iberian grid serving Spain and Portugal in April was the result of a number of smaller interacting problems, according to an investigation by the Spanish government. The report concludes that several steps meant to address a small instability made matters worse, eventually leading to a self-reinforcing cascade where high voltages caused power plants to drop off the grid, thereby increasing the voltage further. Critically, the report suggests that the Spanish grid

Topics: blackout grid oscillations report voltages

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Via the False Claims Act, NIH puts universities on edge

arstechnica.com Unknown 2026-03-13 09:42:07

Earlier this year, a biomedical researcher at the University of Michigan received an update from the National Institutes of Health. The federal agency, which funds a large swath of the country’s medical science, had given the green light to begin releasing funding for the upcoming year on the researcher’s multi-year grant. Not long after, the researcher learned that the university had placed the grant on hold. The school’s lawyers, it turned out, were wrestling with a difficult question: whethe

Topics: funding grant nih researcher university

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Grifin secures $11M to make investing less intimidating

techcrunch.com Lauren Forristal 2026-03-13 05:00:00

Grifin, an investment app that simplifies investing by automatically purchasing stocks in brands where users regularly shop, announced on Wednesday that it has secured an $11 million Series A funding round, bringing the total amount raised to around $22 million. Alongside the announcement, Grifin also revealed it has surpassed 500,000 registered users, indicating that its approach to investing resonates with a lot of users. Grifin also claims approximately 1 million total app downloads and 100,

Topics: grifin investing stock users ventures

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The best graphic design software of 2025: Feature-packed, professional tools

zdnet.com Charlie Osborne 2026-03-13 13:34:42

Whether you're a student just starting your graphic design journey or you're a seasoned professional, you won't get far without the right tools. We've moved on from the early days of classic Adobe Photoshop and Corel, and while these software suites are now modern and valuable in their own right, there is a multitude of graphic design packages out there for you to choose from. Windows, Mac, tablets, or even smartphones -- no matter the device, there's software out there for you. Some are focus

Topics: design free graphic photoshop software

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Think of a Number

news.ycombinator.com View All Posts Xenaproject 2026-03-10 15:34:44

My feed was recently clogged up with news articles reporting that Sam Altman thinks that AGI is here, or will be here next year, or whatever. I will refrain from giving even more air to this nonsense by linking to the stories. This kind of irresponsible hype-generation drives me nuts (although it also drives up stock prices so I can see why the tech bros are motivated to do it). Sure AI can have a good crack at undergraduate mathematics right now, and sure that’s pretty amazing. But our universi

Topics: level mathematics need questions undergraduate

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Bogong Moths Are First Bugs Known to Use Stars for Long-Distance Travel

gizmodo.com Margherita Bassi 2026-03-13 18:05:10

Every spring in the Southern Hemisphere, Bogong moths migrate up to 621 miles (1,000 kilometers) from southeast Australia to spend the summer in cool caves in the Australian Alps. At the beginning of the fall, they fly back to their breeding grounds and die. Each moth undertakes the two-way journey only once in its life—so how does it know where it’s going? A team led by David Dreyer, a visiting research fellow in sensory biology at Lund University, suggests that Bogong moths may use the starry

Topics: bogong migratory moth moths sky

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Hackers steal and destroy millions from Iran’s largest crypto exchange

techcrunch.com Zack Whittaker 2026-03-13 21:18:36

Iran’s largest crypto exchange, Nobitex, said Wednesday that it was hacked and funds have been drained from its hot wallet. In a statement on its website translated by TechCrunch, Nobitex said it detected unauthorized access to its infrastructure and hot wallet, in which the company stores a portion of its customers’ cryptocurrency. The company said it was investigating the incident, and that its website and app would be unavailable for the foreseeable future. Public records show the hackers s

Topics: group iran israel nobitex said

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VanMoof’s co-founders have a new e-bike coming from Raleigh

theverge.com Thomas Ricker 2026-03-14 01:51:04

is a deputy editor and Verge co-founder with a passion for human-centric cities, e-bikes, and life as a digital nomad. He’s been a tech journalist for 20 years. Ties and Taco Carlier, who founded VanMoof as an alternative to Big Bike, are working for Accell Group, the Dutch cycling giant responsible for over a dozen bicycle brands including Batavus, Sparta, Carqon, and Raleigh. According to multiple sources, the first e-bike, developed for the Raleigh brand and pictured above, is nearing comple

Topics: accell bike group raleigh vanmoof

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Grifin secures $11M to make investing less intimidating for its female user base

techcrunch.com Lauren Forristal 2026-03-14 01:00:00

Grifin, an investment app that simplifies investing by automatically purchasing stocks in brands where users regularly shop, announced on Wednesday that it has secured a $11 million Series A funding round, bringing the total amount raised to around $22 million. Alongside the announcement, Grifin also revealed it has surpassed 500,000 registered users, indicating that its approach to investing resonates with a lot of users. Grifin also claims approximately 1 million total app downloads and 100,0

Topics: grifin investing stock users ventures

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Introduction to the A* Algorithm

news.ycombinator.com Patel 2026-03-13 10:25:23

Created 26 May 2014, updated Aug 2014, Feb 2016, Jun 2016, Jun 2020, Jul 2023 Graph search algorithms let us find the shortest path on a map represented as a graph. Move the blob (start point) and cross (end point) to see the shortest path found by the A* Algorithm: A* is one of a family of related graph search algorithms: Breadth First Search[1] explores equally in all directions. Dijkstra’s Algorithm[2] takes into account movement costs. A*[3] explores more towards a single destination. In ad

Topics: current frontier graph path start

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9 Best Foods for Coping With Migraines and Headaches, According to Experts

cnet.com See Full Bio 2026-03-14 14:19:03

While eating a specific food or changing your diet alone won't cure you of migraines or headaches, it can be one piece of the puzzle that provides relief. "The most important thing I tell patients is that migraines are highly individualized," says Dr. Nicholas Church, a board-certified member of the American Board of Family Medicine and the American Academy of Family Physicians. "What helps one person may not help another, and what's a trigger for one might be therapeutic for someone else." Tha

Topics: foods like magnesium migraine migraines

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Timescale Is Now TigerData

news.ycombinator.com Unknown 2026-03-14 04:58:14

Learn how to make PostgreSQL faster with our documentation AI and Vector Learn how to use PostgreSQL for Al with our documentation

Topics: ai documentation faster learn postgresql

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Today's NYT Connections: Sports Edition Hints and Answers for June 18, #268

cnet.com See Full Bio 2026-03-15 01:10:27

Looking for the most recent regular Connections answers? Click here for today's Connections hints, as well as our daily answers and hints for The New York Times Mini Crossword, Wordle and Strands puzzles. Today's Connections: Sports Edition features a killer purple category. How good are you at anagrams? Think baseball team names, and see where you can go with that. Read on for hints and the answers. Connections: Sports Edition is out of beta now, making its debut on Super Bowl Sunday, Feb. 9.

Topics: answers connections group sports today

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The Grug Brained Developer (2022)

news.ycombinator.com Unknown 2026-03-15 05:24:36

The Grug Brained Developer A layman's guide to thinking like the self-aware smol brained Introduction this collection of thoughts on software development gathered by grug brain developer grug brain developer not so smart, but grug brain developer program many long year and learn some things although mostly still confused grug brain developer try collect learns into small, easily digestible and funny page, not only for you, the young grug, but also for him because as grug brain developer get

Topics: big brain code good grug

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Pixar’s ‘Elio’ Shines With Sci-Fi Sincerity and Heart

gizmodo.com Sabina Graves 2026-03-15 05:15:17

Elio is Pixar at its most original, delivering an extraordinary journey filled with wholehearted sci-fi wonder. Director Domee Shi and co-director Madeline Sharafian craft a timeless coming-of-age adventure that’s a solid follow-up to their fan fave Turning Red, marking a new standard for Pixar stories. Through its main character’s close encounter, the film cleverly broaches the resonating experience of feeling alone against a backdrop of imaginative visuals illustrating the universe’s enormity

Topics: elio film grief just pixar

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Time Series Forecasting with Graph Transformers

news.ycombinator.com Jan Eric Lenssen 2026-03-15 13:05:53

Time series forecasting is a cornerstone in modern business analytics, whether it is concerned with anticipating market trends, user behavior, optimizing resource allocation, or planning for future growth. As such, a wide range of different approaches have been introduced and investigated for forecasting, lately data-driven approaches using machine learning and generative models. This blog post will dive into forecasting on graph structured entities, e.g., as obtained from a relational database

Topics: forecasting graph model series time

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Unlock purpose-driven growth at TechCrunch All Stage, and get $210 off for 6 more days

techcrunch.com Techcrunch Events 2026-03-15 13:40:00

T-minus 6 days until TechCrunch All Stage ticket prices rise. From now until June 22 at 11:59 p.m. PT, founders save $210 and investors save $200 on passes. Are you ready to push your startup to the next level? Or are you an investor looking to back the next big breakthrough? Join TC All Stage on July 15 at SoWa Power Station in Boston for the founder summit built for traction and breakout growth. Give your startup a competitive edge. Secure your pass now and save up to $210. Why attend TC Al

Topics: growth roundtables save stage tc

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How Private Equity Killed the American Dream

wired.com Louise Matsakis 2026-03-15 17:00:00

In her new book, Bad Company: Private Equity and the Death of the American Dream, journalist and WIRED alum Megan Greenwell chronicles the devastating impacts of one of the most powerful yet poorly understood forces in modern American capitalism. Flush with cash, largely unregulated, and relentlessly focused on profit, private equity firms have quietly reshaped the US economy, taking over large chunks of industries ranging from health care to retail—often leaving financial ruin in their wake. T

Topics: companies company equity greenwell private

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Take Us North Kickstarter campaign launches for game about crossing the U.S.-Mexico border

venturebeat.com Dean Takahashi 2026-03-15 01:30:00

Anima Interactive has launched a Kickstarter campaign for its game, Take Us North, about the experiences of migrants and asylum seekers on crossing the U.S.-Mexico border. Take Us North is an adventure/survival game that follows the journeys of migrants and asylum seekers on their way to cross the US-Mexico border. It’s about the human story behind the politics and headlines, and stories about what the actual crossing is like. The game has raised $12,000 to date and is targeting hitting $30,000

Topics: game mexico migrant migrants north

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Instagram is working on a repost button for the main feed

9to5mac.com Marcus Mendes 2026-03-16 01:43:41

Instagram might be about to cross off one of the most requested features from users’ wish lists: The company has confirmed it’s testing a native repost button for the main Feed. Here’s how it might work. Not the first time, but maybe the last? If you’ve got a good memory, you might recall that Instagram first started experimenting with reposts back in 2022. Now, some users are once again spotting the feature live in their accounts. According to early reports and screenshots (which Meta has co

Topics: button confirmed instagram repost users

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How AI chatbots keep people coming back

techcrunch.com Maggie Nye 2026-03-16 01:39:00

Chatbots are increasingly looking to keep people chatting, using familiar tactics that we’ve already seen lead to negative consequences. Sycophancy can make AI chatbots respond in a way that’s overly agreeable or flattering. And while having a digital hype person might not seem like a dangerous thing, it is actually a tactic used by tech companies to keep users talking with their bots and returning to their platforms.

Topics: actually agreeable ai bots chatbots

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How Tesla Takedown got its start

arstechnica.com Unknown 2026-03-16 09:56:54

On a sunny April afternoon in Seattle, around 40 activists gathered at the Pine Box, a beer and pizza bar in the sometimes scruffy Capitol Hill neighborhood. The group had reserved a side room attached to the outside patio; before remarks began, attendees flowed in and out, enjoying the warm day. Someone set up a sound system. Then the activists settled in, straining their ears as the streamed call crackled through less-than-perfect speakers. In more than a decade of climate organizing, it was

Topics: called government group musk time

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You can now set up double dates with friends on Tinder

techcrunch.com Lauren Forristal 2026-03-16 21:00:00

In an effort to resonate with younger users amid declining user engagement, Tinder announced on Tuesday the launch of a new Double Date feature, which allows users to team up with friends and chat with potential matches together. Double Date lets users pair up with a friend and browse through other paired users who share at least one of their individual preferences, such as gender and sexual orientation. When one person in a pair receives a match, a group chat begins with all four participants.

Topics: date dating double group users

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The Humble Programmer (1972)

news.ycombinator.com Unknown 2026-03-16 22:25:25

The Humble Programmer by Edsger W. Dijkstra As a result of a long sequence of coincidences I entered the programming profession officially on the first spring morning of 1952 and as far as I have been able to trace, I was the first Dutchman to do so in my country. In retrospect the most amazing thing was the slowness with which, at least in my part of the world, the programming profession emerged, a slowness which is now hard to believe. But I am grateful for two vivid recollections from that

Topics: machines program programmer programming years

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Groq just made Hugging Face way faster — and it’s coming for AWS and Google

venturebeat.com Michael Nuñez 2026-03-17 09:49:42

Join the event trusted by enterprise leaders for nearly two decades. VB Transform brings together the people building real enterprise AI strategy. Learn more Groq, the artificial intelligence inference startup, is making an aggressive play to challenge established cloud providers like Amazon Web Services and Google with two major announcements that could reshape how developers access high-performance AI models. The company announced Monday that it now supports Alibaba’s Qwen3 32B language mode

Topics: ai context groq inference infrastructure

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Instagram is running another test of a repost feature

engadget.com Unknown 2026-03-17 09:03:09

Instagram is testing a new repost feature. TechCrunch reported that social media network is currently running a test that gives users the opportunity to repost content. The current feature test is focused on resharing a post, the content that appears in a user's feed, as a new post. The platform does already offer the ability to share a post to someone's Story, but this post-to-post repost would be a new addition to the available interactions. Instagram did a very similar test of a very similar

Topics: content instagram post repost test

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Hackers switch to targeting U.S. insurance companies

bleepingcomputer.com Unknown 2026-03-17 08:43:00

Threat intelligence researchers are warning of hackers breaching multiple U.S. companies in the insurance industry using all the tactics observed with Scattered Spider activity. Typically, the threat group has a sector-by-sector focus. Previously, they targeted retail organizations in the United Kingdom and then switched to targets in the same sector in the United States. “Google Threat Intelligence Group is now aware of multiple intrusions in the US which bear all the hallmarks of Scattered S

Topics: group organizations scattered spider threat

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Latest Tech News

Introduction to the A* Algorithm (2014)

Yes I Will Read Ulysses Yes

Elon Says He’s Working to ‘Fix’ Grok After AI Disagrees With Him on Right-Wing Violence

Spanish blackout report: Power plants meant to stabilize voltage didn’t

Via the False Claims Act, NIH puts universities on edge

Grifin secures $11M to make investing less intimidating

The best graphic design software of 2025: Feature-packed, professional tools

Think of a Number

Bogong Moths Are First Bugs Known to Use Stars for Long-Distance Travel

Hackers steal and destroy millions from Iran’s largest crypto exchange

VanMoof’s co-founders have a new e-bike coming from Raleigh

Grifin secures $11M to make investing less intimidating for its female user base

Introduction to the A* Algorithm

9 Best Foods for Coping With Migraines and Headaches, According to Experts

Timescale Is Now TigerData

Today's NYT Connections: Sports Edition Hints and Answers for June 18, #268

The Grug Brained Developer (2022)

Pixar’s ‘Elio’ Shines With Sci-Fi Sincerity and Heart

Time Series Forecasting with Graph Transformers

Unlock purpose-driven growth at TechCrunch All Stage, and get $210 off for 6 more days

How Private Equity Killed the American Dream

Take Us North Kickstarter campaign launches for game about crossing the U.S.-Mexico border

Instagram is working on a repost button for the main feed

How AI chatbots keep people coming back

How Tesla Takedown got its start

You can now set up double dates with friends on Tinder

The Humble Programmer (1972)

Groq just made Hugging Face way faster — and it’s coming for AWS and Google

Instagram is running another test of a repost feature

Hackers switch to targeting U.S. insurance companies

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