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SIMD-friendly algorithms for substring searching (2016)

news.ycombinator.com Wojciech Muła 2025-09-16 12:31:18

Introduction Popular programming languages provide methods or functions which locate a substring in a given string. In C it is the function strstr , the C++ class std::string has the method find , Python's string has methods pos and index , and so on, so forth. All these APIs were designed for one-shot searches. During past decades several algorithms to solve this problem were designed, an excellent page by Christian Charras and Thierry Lecroq lists most of them (if not all). Basically these al

Topics: algorithms assumption based designed string

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How multiplication is defined in Peano arithmetic

news.ycombinator.com Mathematical Association Of America 2025-09-16 16:36:18

Mathematician Keith Devlin is the Executive Director of the Human-Sciences and Technologies Advanced Research Institute ( H-STAR ) at Stanford University and The Math Guy on NPR's Weekend Edition

Topics: advanced devlin director edition executive

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Anubis ransomware adds wiper to destroy files beyond recovery

bleepingcomputer.com Unknown 2025-09-17 09:29:38

The Anubis ransomware-as-a-service (RaaS) operation has added to its file-encryptimg malware a wiper module that destroys targeted files, making recovery impossible even if the ransom is paid. Anubis (not to be confused with the same-name Android malware with a ransomware module) is a relatively new RaaS first observed in December 2024 but became more active at the beginning of the year. On February 23, the operators announced an affiliate program on the RAMP forum. A report from KELA at the

Topics: anubis encryption micro ransomware trend

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We investigated Amsterdam's attempt to build a 'fair' fraud detection model

news.ycombinator.com Unknown 2025-09-15 08:54:57

METHODOLOGY How we investigated Amsterdam’s attempt to build a ‘fair’ fraud detection model For the past four years, Lighthouse has investigated welfare fraud detection algorithms deployed in five European countries. Our investigations have found evidence that these systems discriminated against vulnerable groups with oftentimes steep consequences for people’s lives. Governments and companies deploying these systems often show little regard for the biases they perpetrate against vulnerable gro

Topics: city flagged investigation model people

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Infinite Grid of Resistors

news.ycombinator.com Unknown 2025-09-17 17:12:12

Infinite Grid of Resistors Remain, remain thou here, While sense can keep it on. And, sweetest, fairest, As I my poor self did exchange for you, To your so infinite loss, so in our trifles I still win of you: for my sake wear this... Shakespeare There is a well-known puzzle based on the premise of an “infinite” grid of resistors connecting adjacent nodes of a square lattice. A small portion of such a grid is illustrated below. Between every pair of adjacent nodes is a resistance R, and w

Topics: current equation grid node nodes

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Sony is Still Putting Its Faith in ‘Marathon’

gizmodo.com Justin Carter 2025-09-17 15:15:40

Bungie’s Marathon is still coming out, and when it does, PlayStation plans on giving the extraction shooter a fair shot. During a recent investor interview, Sony Interactive Entertainment head Herman Hulst assured the game would come out before March 31, 2026, when Sony’s fiscal year ends. Touching on its recent alpha test, he descbied the feedback as “varied, but super useful. […] The constant testing, the constant re-validation of assumptions that we just talked about, to me is just so valuab

Topics: bungie just playstation recent title

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Today's NYT Connections Hints, Answers and Help for June 15, #735

cnet.com See Full Bio 2025-09-17 15:00:03

Looking for the most recent 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, Connections: Sports Edition and Strands puzzles. Today's NYT Connections puzzle has one mention of Father's Day to mark the holiday. It's not super tough -- maybe race Dad to see who can complete it fastest. Read on for clues and today's Connections answers. The Times now has a Connections Bot, like the one for Wordle.

Topics: answers connections group today words

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Today's NYT Connections: Sports Edition Hints and Answers for June 15, #265

cnet.com See Full Bio 2025-09-17 15:00:06

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 might be tough. Read on for hints and the answers. Connections: Sports Edition is out of beta now, making its debut on Super Bowl Sunday, Feb. 9. That's a sign that the game has earned enough loyal players that The Athletic, the subscription-based sports jo

Topics: answers connections group sports today

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RFK Jr. Orders HHS to Give Undocumented Migrants’ Medicaid Data to DHS

wired.com Andy Greenberg 2025-09-17 05:30:00

With demonstrations ramping up against the Trump administration, this week was all about protests. With President Donald Trump taking the historic step to deploy US Marines and the National Guard to Los Angeles, we dove into the “long-term dangers” of sending troops to LA, as well as what those troops are permitted to do while they’re there. Of course, it’s not just the military getting involved in the LA protests against the heavy crackdowns by Immigration and Customs Enforcement (ICE). There’

Topics: data legal operation protests week

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Suspect in Minnesota Shooting Linked to Security Company, Evangelical Ministry

wired.com Tess Owen 2025-09-17 14:49:05

A man named Vance Boelter allegedly shot and killed Melissa Hortman, a Democratic Minnesota state representative, and her husband Mark Hortman at their home at some point early Saturday morning while, according to law enforcement, impersonating a police officer. He also allegedly shot state senator John Hoffman and his wife Yvette Hoffman at their home. They are alive, but remain in critical condition. Law enforcement has said they found a manifesto and hit list in the alleged suspect’s car, wh

Topics: abortion according reviewed said wired

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So... You Want to Become a Penetration Tester?

techspot.com David Matthews 2025-09-17 12:18:00

Cybersecurity is a rapidly growing and evolving field with a wide range of subfields and specializations. One of these is penetration testing, a discipline within what's known as "red teaming," which seeks to actively find and exploit vulnerabilities within computer systems (with permission, of course). It's an exciting and rewarding career, and I'll show you how to become a penetration tester. Before I continue, however, let me be transparent about my own experience. While I have about three

Topics: cybersecurity job learn penetration testing

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So... You Want to Become a Penetration Tester?

techspot.com David Matthews 2025-09-17 12:18:00

Cybersecurity is a rapidly growing and evolving field with a wide range of subfields and specializations. One of these is penetration testing, a discipline within what's known as "red teaming," which seeks to actively find and exploit vulnerabilities within computer systems (with permission, of course). It's an exciting and rewarding career, and I'll show you how to become a penetration tester. Before I continue, however, let me be transparent about my own experience. While I have about three

Topics: cybersecurity job learn penetration testing

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Scientists Intrigued by Conical Skull Found in Ancient Burial Ground

futurism.com Unknown 2025-09-17 13:00:15

Secrets of the skeletons. Head Game Archaeologists in Iran have discovered an ancient cone-shaped skull that is believed to have belonged to a teen girl — and there are signs of tragedy in her bones. As Live Science reports, the skull, which was found in a prehistoric burial ground known as Chega Sofla without its corresponding skeleton, shows signs not only of intentional modification, but also possibly fatal blunt force trauma. Dated to roughly 6,200 years old, the strange cone shape of th

Topics: alirezazadeh archaeologists cone modification skull

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The Space Station Leak Is Rearing Its Ugly Head Again

futurism.com Unknown 2025-09-17 15:15:21

Space Draft Space tourism company Axiom Space has had to postpone its fourth chartered SpaceX flight to the International Space Station after NASA announced it needs more time to investigate an air leak affecting the orbital lab. For five years, NASA and its Russian counterpart Roscosmos have been hunting down leaks in the station, which has been continuously occupied for 25 years. The issue has since been traced back to the Russian segment of the ISS, specifically the Zvezda service module, a

Topics: axiom nasa space spacex station

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MasterClass deal: Get up to 50 percent off for Father's Day

engadget.com Unknown 2025-09-17 12:01:26

Engadget has been testing and reviewing consumer tech since 2004. Our stories may include affiliate links; if you buy something through a link, we may earn a commission. Read more about how we evaluate products . If you're stumped on what to get your dad for Father's Day, consider a digital gift like a Nintendo Switch Online membership or a subscription to MasterClass. The latter has appeared in many of our gift guides in the past, including our favorite gifts for teachers, but it's a great gif

Topics: dad devices gift membership option

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One of the most versatile action cameras I've tested isn't from GoPro - and it's on sale

zdnet.com Adrian Kingsley-Hughes 2025-09-17 13:30:17

DJI Osmo Action 4. Adrian Kingsley-Hughes/ZDNET Multiple DJI Osmo Action 4 packages are on sale at Amazon. Both the Essential and Standard Combos have been discounted to $249, while the Adventure Combo has dropped to $349. DJI might not be the first name on people's lips when it comes to action cameras, but the company that's better known for its drones also has a really solid line of action cameras. And its latest device, the Osmo Action 4 camera, has some very impressive tricks up its sleeve

Topics: action camera dji osmo video

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Writing a Truth Oracle in Lisp

news.ycombinator.com Unknown 2025-09-14 20:50:53

This post assumes some familiarity with typed functional programming, Lisp, and formal logic. Today we will attempt to write a truth oracle in Lisp. By "truth oracle," I mean a program that can determine whether arbitrary mathematical statements are true or false. This might sound impossible, due to first-order logic being undecidable, but let's try anyway. Before that, though, we need to go over some required concepts. Extracting information from proofs First, sometimes, we can extract info

Topics: function proof right type value

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SIMD-friendly algorithms for substring searching (2018)

news.ycombinator.com Wojciech Muła 2025-09-17 03:31:18

Introduction Popular programming languages provide methods or functions which locate a substring in a given string. In C it is the function strstr , the C++ class std::string has the method find , Python's string has methods pos and index , and so on, so forth. All these APIs were designed for one-shot searches. During past decades several algorithms to solve this problem were designed, an excellent page by Christian Charras and Thierry Lecroq lists most of them (if not all). Basically these al

Topics: algorithms assumption based designed string

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How to Build Conscious Machines

news.ycombinator.com Unknown 2025-09-17 10:53:13

For full functionality of this site it is necessary to enable JavaScript. Here are instructions for enabling JavaScript in your web browser.

Topics: browser enable enabling functionality javascript

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I have reimplemented Stable Diffusion 3.5 from scratch in pure PyTorch

news.ycombinator.com Unknown 2025-09-17 13:56:46

miniDiffusion miniDiffusion is a reimplementation of the Stable Diffusion 3.5 model in pure PyTorch with minimal dependencies. It's designed for educational, experimenting, and hacking purposes. It's made with the mindset of having the least amount of code necessary to recreate Stable Diffusion 3.5 from scratch, with only ~2800 spanning from VAE to DiT to the Train and Dataset scripts. -Files: The main Stable Diffusion model code is located in dit.py, dit_components.py, and attention.py. The d

Topics: attention diffusion dit model py

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Neanderthals Spread Across Asia With Surprising Speed—and Now We Know How

gizmodo.com Margherita Bassi 2025-09-17 12:00:29

Neanderthals and modern humans split from a common ancestor around 500,000 years ago, with Neanderthals leaving Africa for Europe and Asia long before modern humans joined them hundreds of thousands of years later. There, Neanderthals dispersed as far as Spain and Siberia. Our prehistoric cousins likely first reached Asia around 190,000 to 130,000 years ago, with another substantial migration to Central and Eastern Eurasia likely between 120,000 and 60,000 years ago. But how did they get there?

Topics: 000 archaeological migration neanderthals years

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Anker 1800W Power Station With 11 Ports Is Selling For Peanuts, Amazon Clears Out Stock Before Summer

gizmodo.com Gizmodo Deals 2025-09-17 15:29:47

Anker has long been a trusted name for laptop and smartphone chargers. But the company’s technological capabilities extend far beyond such everyday essentials: It also produces powerful portable power stations to meet the needs of users looking for robust sources of power on the go or as reliable home standbys. One such gem product in this category is the Anker Solix C1000 portable power station which is a high-end generator that is currently available on Amazon for a mere $549, reduced from it

Topics: anker battery home power station

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Last fifty years of integer linear programming: Recent practical advances

news.ycombinator.com François Clautiaux 2025-09-17 11:15:08

Mixed-integer linear programming (MILP) has become a cornerstone of operations research. This is driven by the enhanced efficiency of modern solvers, which can today find globally optimal solutions within seconds for problems that were out of reach a decade ago. The versatility of these solvers allowed successful applications in many areas, such as transportation, logistics, supply chain management, revenue management, finance, telecommunications, and manufacturing. Despite the impressive succes

Topics: challenges decomposition management milp research

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Peano arithmetic is enough, because Peano arithmetic encodes computation

news.ycombinator.com Unknown 2025-09-16 21:10:38

$\begingroup$ PA is enough, because PA can encode computation. This is longer than I expected, and was made longer still by some browser crashes. But I'd been idly thinking of writing these ideas up. I hadn't for these reasons. It is a lot of work. What I have to say is obvious to logicians, and they would consider the detour into programming to only be a distraction. Computer programmers who can appreciate the programming detour, are mostly not that interested in logic. But this question hi

Topics: binary induction list pa proof

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$100 Hamburger

news.ycombinator.com Unknown 2025-09-17 13:41:14

Aviation slang $100 hamburger ("hundred-dollar hamburger") is aviation slang for the excuse a general aviation pilot might use to fly.[1][2] Background [ edit ] A $100 hamburger trip typically involves flying a short distance (less than two hours), eating at an airport restaurant, and then flying home. "$100" originally referred to the approximate cost of renting or operating a light general aviation aircraft, such as a Cessna 172, for the time it took to fly round-trip to a nearby airport. H

Topics: 100 aviation fly hamburger run

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SIMD-friendly algorithms for substring searching

news.ycombinator.com Wojciech Muła 2025-09-17 13:31:18

Introduction Popular programming languages provide methods or functions which locate a substring in a given string. In C it is the function strstr , the C++ class std::string has the method find , Python's string has methods pos and index , and so on, so forth. All these APIs were designed for one-shot searches. During past decades several algorithms to solve this problem were designed, an excellent page by Christian Charras and Thierry Lecroq lists most of them (if not all). Basically these al

Topics: algorithms assumption based designed string

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UK unis to cough up to £10M on Java to keep Oracle off their backs

news.ycombinator.com Lindsay Clark 2025-09-17 17:57:50

UK universities and colleges have signed a framework worth up to £9.86 million ($13.33 million) with Oracle to use its controversial Java SE Universal Subscription model, in exchange for a "waiver of historic fees due for any institutions who have used Oracle Java since 2023." Jisc, a membership organization that runs procurement for higher and further education establishments in the UK, said it had signed an agreement to purchase the new subscription licenses after consultation with members.

Topics: java licensing oracle said subscription

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The Tech Job Meltdown

news.ycombinator.com Professor Axelrod 2025-09-17 17:22:54

He wrote me a prescription; he said “You are depressed I'm glad you came to see me to get this off your chest Come back and see me later, next patient please Send in another victim of industrial disease” Industrial Disease, Dire Straits The Google campus doesn’t look as friendly as it used to. (this ia actually from Bartertown in Mad Max 3 - you can see Thunderdome in the middle) Since the start of 2023, more than half-a-million tech workers have been laid off. This isn’t the impact of COV

Topics: companies costs section tax tech

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This Android notification exploit could trick you into opening some very unfriendly links (Updated)

androidauthority.com Unknown 2025-09-17 22:19:58

Joe Maring / Android Authority TL;DR A bug in Android notifications can cause the “Open link” button to open a different link than the one displayed. Hidden characters in the messages can confuse the system, causing it to open a link that only makes up a part of the one in the displayed notification. Until Google issues a fix, it’s safest to avoid using the “Open link” button and open links manually in the app. Update, June 13, 2025 (5:19 PM ET): Google has reached out to Android Authority w

Topics: android link links notification open

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Whatever Happened to Sandboxfs?

news.ycombinator.com Julio Merino 2025-09-15 17:37:09

Back in 2017–2020, while I was on the Blaze team at Google, I took on a 20% project that turned into a bit of an obsession: sandboxfs. Born out of my work supporting iOS development, it was my attempt to solve a persistent pain point that frustrated both internal teams and external users alike: Bazel’s poor sandboxing performance on macOS. sandboxfs was a user-space file system designed to efficiently create virtual file hierarchies backed by real files—a faster alternative to the “symlink fore

Topics: action bazel sandboxfs sandboxing symlink

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Latest Tech News

SIMD-friendly algorithms for substring searching (2016)

How multiplication is defined in Peano arithmetic

Anubis ransomware adds wiper to destroy files beyond recovery

We investigated Amsterdam's attempt to build a 'fair' fraud detection model

Infinite Grid of Resistors

Sony is Still Putting Its Faith in ‘Marathon’

Today's NYT Connections Hints, Answers and Help for June 15, #735

Today's NYT Connections: Sports Edition Hints and Answers for June 15, #265

RFK Jr. Orders HHS to Give Undocumented Migrants’ Medicaid Data to DHS

Suspect in Minnesota Shooting Linked to Security Company, Evangelical Ministry

So... You Want to Become a Penetration Tester?

So... You Want to Become a Penetration Tester?

Scientists Intrigued by Conical Skull Found in Ancient Burial Ground

The Space Station Leak Is Rearing Its Ugly Head Again

MasterClass deal: Get up to 50 percent off for Father's Day

One of the most versatile action cameras I've tested isn't from GoPro - and it's on sale

Writing a Truth Oracle in Lisp

SIMD-friendly algorithms for substring searching (2018)

How to Build Conscious Machines

I have reimplemented Stable Diffusion 3.5 from scratch in pure PyTorch

Neanderthals Spread Across Asia With Surprising Speed—and Now We Know How

Anker 1800W Power Station With 11 Ports Is Selling For Peanuts, Amazon Clears Out Stock Before Summer

Last fifty years of integer linear programming: Recent practical advances

Peano arithmetic is enough, because Peano arithmetic encodes computation

$100 Hamburger

SIMD-friendly algorithms for substring searching

UK unis to cough up to £10M on Java to keep Oracle off their backs

The Tech Job Meltdown

This Android notification exploit could trick you into opening some very unfriendly links (Updated)

Whatever Happened to Sandboxfs?

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