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AI Agent Learns to Use Computers Like a Human

2025-02-06

AI Agent Learns to Use Computers Like a Human

The r1-computer-use project aims to train an AI agent to interact with a computer like a human, encompassing file systems, web browsers, and command lines. Inspired by DeepSeek-R1's reinforcement learning techniques, it eschews traditional hard-coded verifiers in favor of a neural reward model to evaluate the correctness and helpfulness of the agent's actions. The training pipeline involves multiple stages, from expert demonstrations to reward-model-guided policy optimization and fine-tuning, ultimately aiming for a safe and reliable AI agent capable of complex tasks.

(github.com)

AI Computer Interaction

Build Your Own Virtual Machine: A Step-by-Step Guide

2024-12-26

This tutorial guides you through building your own virtual machine (VM) capable of running assembly language programs, such as 2048 or Roguelike games. Even if you're already a programmer, this project provides a deeper understanding of computer architecture and how programming languages work. The tutorial covers core VM concepts, the LC-3 architecture, instruction sets, trap routines, program loading, and more, with detailed code examples and explanations. The final code is approximately 250 lines of C, making it accessible to those with basic C/C++ knowledge.

(www.jmeiners.com)

Development virtual machine

s1: Simple Test-Time Scaling for Strong Reasoning

2025-02-03

s1: Simple Test-Time Scaling for Strong Reasoning

This paper introduces s1, a simple test-time scaling method that achieves strong reasoning performance matching o1-preview using only 1,000 examples and budget forcing. The method significantly improves performance on large language models through clever test-time strategies. The code and data are open-sourced for reproducibility and further exploration.

(github.com)

AI reasoning performance test-time scaling

OCaml: A Surprisingly Relevant Language for the Modern Era

2025-08-14

This article makes a strong case for OCaml, highlighting its strengths as both a research language and a practical tool for industry. The author details OCaml's powerful features—including its static type system, multi-paradigm support, and evolving ecosystem—arguing that it's well-suited for diverse projects. Several common misconceptions about OCaml are addressed, and the author paints a picture of a vibrant and supportive community. The piece concludes with a compelling invitation to explore this often-overlooked language.

(xvw.lol)

Development

Databricks in Talks to Acquire Open-Source Database Startup Neon for $1B+

2025-05-05

Databricks in Talks to Acquire Open-Source Database Startup Neon for $1B+

Data and AI unicorn Databricks is in advanced talks to acquire Neon, a maker of an open-source database engine, for approximately $1 billion, according to four sources familiar with the matter. While some believe the deal is done, sources say negotiations are ongoing and could still fall apart. The final price could exceed $1 billion when employee retention packages are included. Neon and its CEO declined to comment, and Databricks did not respond to a request for comment.

(www.upstartsmedia.com)

Tech Database Acquisition

2024 Good Tech Awards: AI's Ascent and the Unsung Heroes of Open Source

2025-01-06

2024 Good Tech Awards: AI's Ascent and the Unsung Heroes of Open Source

2024 saw breakneck AI advancements, but also regulatory battles and political turmoil in the tech world. This year's Good Tech Awards celebrate achievements in AI: Epoch AI for providing reliable AI data; open-source maintainers for safeguarding our digital infrastructure; and organizations like the Arc Institute, Lichtman Lab, and SyntheMol for leveraging AI in healthcare and scientific research. The awards also recognize NASA's Voyager 1 support, Bluesky's innovative social network, and useful AI applications like NotebookLM and Coloring Book Hero, highlighting technology's positive impact.

(www.thestar.com.my)

Tech Tech Awards

Asteroid 2024 YR4 Impact Probability Significantly Reduced

2025-02-23

Asteroid 2024 YR4 Impact Probability Significantly Reduced

NASA continues to monitor the trajectory of asteroid 2024 YR4. Initial calculations suggested a 1.3% chance of Earth impact, rising briefly to 3.1%, but recent analysis shows this probability has dropped significantly to 0.28%. However, there's now a 1% chance of a lunar impact. The University of Hawaii's ATLAS system detected this near-Earth object, and its trajectory continues to be monitored. While the risk is currently very low, NASA will continue observations using the James Webb Space Telescope and other assets.

(www.universetoday.com)

Tech near-earth object

APL Challenge: Win $100!

2025-02-05

APL Challenge: Win $100!

The Dyalog Ltd APL Challenge is on! Four rounds a year, each with ten problems running for three months. Win one of three $100 prizes! No prior programming experience needed; the problems teach you APL as you go. Even if you just want to learn about APL, register to stay updated on future rounds. Start your coding journey and compete for a chance to win!

(challenge.dyalog.com)

Development prize money

Attack Hidden in Plain Sight: Tenant-Level Security Analysis Unmasks Malicious Activity

2025-03-31

Attack Hidden in Plain Sight: Tenant-Level Security Analysis Unmasks Malicious Activity

A security team uncovered a seemingly ordinary user login that masked a sophisticated attack targeting 24 users. The attacker used the Microsoft Azure CLI, attempting logins from a Mexican data center with no more than two attempts per user to avoid brute-force detection. They also utilized IPs from the 2001:0470:c8e0::/48 range to evade IOC-based detection. By analyzing login activity at the tenant level, rather than focusing on individual users, the team successfully identified the attack. This highlights the importance of tenant-wide log analysis to uncover malicious activities hidden within seemingly normal user behavior.

(petrasecurity.substack.com)

Tech security analysis Azure security malicious login

Building Your Own Userspace TCP/IP Stack: From Ethernet Frames to ARP

2025-03-04

Building Your Own Userspace TCP/IP Stack: From Ethernet Frames to ARP

This blog post, the first in a series, details building a minimal TCP/IP stack in Linux userspace. The goal is hands-on learning of network and system programming. It covers using TUN/TAP devices for intercepting network traffic, a deep dive into Ethernet frame format and parsing (MAC addresses, ethertype, CRC), and a thorough explanation of the Address Resolution Protocol (ARP), including packet format and the resolution algorithm. The post culminates in verifying the custom stack's ARP reply functionality using arping.

(www.saminiir.com)

Development

The Oklo Natural Nuclear Reactor: A 2-Billion-Year-Old Mystery Solved

2025-06-20

The Oklo Natural Nuclear Reactor: A 2-Billion-Year-Old Mystery Solved

In 1972, a peculiar discovery at the Oklo uranium mine in Gabon baffled scientists: the uranium ore contained a lower-than-expected proportion of uranium-235. Investigations revealed a naturally occurring nuclear fission reaction dating back over two billion years. The high uranium concentration, coupled with groundwater acting as a moderator, allowed a sustained chain reaction. This astonishing find demonstrates that natural nuclear reactors can exist, with Oklo remaining the only known example preserved to this day.

(www.iaea.org)

Tech natural phenomenon

Beej's Guide to Git: A Comprehensive Tutorial

2025-02-05

Beej's Guide to Git offers a comprehensive tutorial available in various PDF and HTML formats. The author humbly acknowledges potential errors and welcomes corrections. Multiple paper sizes and printing options (one-sided, two-sided, color, black and white) are provided for convenient printing. Translators and contributors are invited to clone the GitHub repository for collaboration.

(beej.us)

Development tutorial learning resource

Conquering Makefiles: A Comprehensive Guide

2025-06-20

This guide demystifies Makefiles, tackling their often-confusing syntax and hidden rules. It starts with the basics, progressing through syntax, variables, functions, and advanced techniques, all illustrated with runnable examples. The guide culminates in a practical Makefile template for medium-sized projects, making it a valuable resource for developers of all levels.

(makefiletutorial.com)

Development

OkCupid's Email Validation Fiasco: A Security Nightmare

2025-03-22

OkCupid's Email Validation Fiasco: A Security Nightmare

Fastmail experienced a significant email validation vulnerability exploited by OkCupid, resulting in a deluge of spam emails to their official addresses, including a never-used junk address. Attackers used the vulnerability to register multiple accounts, sending fake 'someone likes you' messages and even impersonating users to modify profiles. OkCupid's customer support response was merely to block the email addresses, failing to address the root issue, exposing their disregard for user data security. This incident highlights the importance of robust email verification mechanisms and the lack of responsibility from companies regarding user data security. Fastmail recommends users employ different email addresses for different services to mitigate risks.

(www.fastmail.com)

Tech email validation

Lenovo Legion Go S: SteamOS Edition Crushes Windows 11?

2025-07-14

The Lenovo Legion Go S handheld PC comes in two versions: SteamOS and Windows 11. Benchmarks reveal the SteamOS version consistently outperforms the Windows 11 version in AAA games, boasting significantly higher frame rates and better battery life. While the Windows 11 version might be cheaper in some regions, its inferior performance and battery life make the SteamOS version the clear winner in terms of value. Ironically, the SteamOS version is surprisingly difficult to find on Lenovo's official website, raising questions about their marketing strategy.

(boilingsteam.com)

Game handheld PC

Calculator Forensics: Uncovering Chip Design Secrets

2025-01-19

This article introduces 'calculator forensics,' a technique that analyzes the results of embedded algorithms in calculators to identify the origins and evolution of different calculator chip designs. The author devised a standardized algorithm and compiled results from numerous calculators, creating comparison tables to trace the design history and technological lineage of calculator chips. This technique is significant for studying calculator history and chip design, particularly useful when official documentation is scarce, enabling researchers to understand the relationships between different calculators.

(www.rskey.org)

Hardware chip design

AI Cheats: Why You Didn't Notice Your Teammate Was Cheating

2025-04-03

AI Cheats: Why You Didn't Notice Your Teammate Was Cheating

Game cheating has evolved rapidly, from memory-reading aimbots to colorbots, and now AI-powered aim assist. A veteran cheat developer shares their journey, starting at age 12, detailing the inner workings of AI cheats. These cheats, essentially advanced colorbots, use AI models to identify enemies, making them incredibly difficult to detect. While modern cheats are expensive and risky, their subtlety makes them nearly invisible unless poorly configured. The article reveals the latest trends in game cheating and the challenges faced by anti-cheat technology.

(niila.fi)

Game

Simulated SPI RAM on RP2040: A High-Performance Implementation

2025-07-06

Simulated SPI RAM on RP2040: A High-Performance Implementation

This project simulates an SPI RAM, similar to a 23LC512, on the RP2040 microcontroller. It supports READ, WRITE, and FAST READ commands, leveraging PIO and DMA for efficient data transfer. To meet stringent timing requirements, the simulated RAM utilizes Core1 and optimized PIO programs to minimize latency. While currently not supporting aborting operations before data transfer begins, this project offers an effective way to achieve high-performance SPI RAM on the RP2040.

(github.com)

Hardware

Parinfer: A Simpler Way to Edit Lisp

2025-01-20

Parinfer is a novel editor mode for Lisp programming languages that simplifies Lisp coding by cleverly linking parentheses and indentation. It tackles the notorious parenthesis problem in Lisp, offering a more intuitive editing experience for both beginners and experts. Parinfer features two modes: Indent Mode and Paren Mode, allowing users to focus on either indentation or parentheses while Parinfer automatically manages the other. It also provides Paredit-like functionality without requiring complex hotkeys. At its core, Parinfer relies on a formal definition of the relationship between parentheses and indentation and employs a smart auto-adjustment mechanism based on this definition.

(shaunlebron.github.io)

Development Code

JWST Detects Potentially Biosignature Gases on Exoplanet K2-18b

2025-04-17

JWST Detects Potentially Biosignature Gases on Exoplanet K2-18b

Using the James Webb Space Telescope, scientists have detected signs of dimethyl sulfide and dimethyl disulfide in the atmosphere of exoplanet K2-18b, chemicals produced by marine life on Earth. While not definitive proof of life, researchers call it the most promising sign yet of life beyond our solar system. K2-18b resides in the habitable zone, possessing the potential for liquid water, making life a possibility. This builds upon prior research identifying methane and carbon dioxide in K2-18b's atmosphere. Although alternative explanations exist, researchers are excited about the discovery and plan further investigation to confirm their findings.

(www.skyatnightmagazine.com)

Tech biosignature

Tokyo's Major Train Stations: A Comprehensive List

2025-08-28

This list details many of Tokyo's crucial train stations, ranging from the bustling Akihabara to the tranquil Sugamo, encompassing major areas of the city. These stations connect to Tokyo's intricate transportation network, serving as indispensable hubs for exploring the metropolis. The list is incredibly useful for planning a trip to Tokyo or understanding its geographical layout.

(yamanot.es)

Misc Tokyo transportation train stations

Resurrecting a 25-Year-Old Tape Driver with AI

2025-09-08

The author enjoys recovering data from old QIC-80 tapes, a popular backup medium in the 1990s. These tapes require the outdated ftape driver, only compatible with very old Linux versions (CentOS 3.5). Using Claude Code, an AI model, the author modernized the ftape driver to compile and run on modern Linux kernels. Through iterations and minor manual adjustments, a loadable kernel module was created, successfully reading test tapes on Xubuntu 24.04. The author shares lessons learned collaborating with AI, emphasizing clear instructions, understanding AI limitations, and leveraging AI as a skill multiplier.

(dmitrybrant.com)

Development

VectorChord-BM25: Supercharging PostgreSQL Full-Text Search

2025-03-03

VectorChord-BM25: Supercharging PostgreSQL Full-Text Search

VectorChord-BM25 is a new PostgreSQL extension leveraging the BM25 algorithm and Block WeakAnd algorithm to significantly improve the speed and accuracy of PostgreSQL's full-text search. It simplifies the search process and seamlessly integrates with PostgreSQL. Compared to ElasticSearch, VectorChord-BM25 achieves 3x higher Queries Per Second (QPS) on average for Top 1000 queries and comparable or even superior NDCG@10 scores, but requires careful alignment of tokenization strategies for fair benchmarking.

(blog.vectorchord.ai)

Development

Auto-Saving Rails Forms with Turbo Streams: A Hotwire Approach

2025-01-09

Auto-Saving Rails Forms with Turbo Streams: A Hotwire Approach

This article demonstrates how to implement auto-saving for inline input fields in Rails applications using Turbo Streams, a component of the Hotwire framework. A Stimulus controller automatically submits the form on blur, leveraging Turbo Streams to update the UI without page reloads. The author highlights the importance of unique input IDs and using `title_previously_changed?` for efficient user feedback, creating a seamless autosave experience.

(nts.strzibny.name)

Development

Motion Sickness in Gaming: An Often-Overlooked Accessibility Issue

2025-02-04

Motion Sickness in Gaming: An Often-Overlooked Accessibility Issue

Up to one-third of gamers experience motion sickness, significantly impacting their gaming experience. This article explores the causes of motion sickness—a mismatch between visually perceived movement and the vestibular system's perception of movement—and common triggers in games, such as field of view, screen shake, motion blur, etc. The article argues that game developers should provide more accessibility options, such as FOV sliders, FPS targets, and the ability to turn off motion bobbing, to improve game accessibility. Using personal experiences and Minecraft's accessibility settings as examples, the author emphasizes the importance of considering accessibility from the initial stages of game development. The article also points out that the misuse of accessibility options by some players highlights not a problem with the options themselves, but rather flaws in game design.

(madelinemiller.dev)

Game motion sickness game accessibility

Chiplab Launches: Run Your 6502 Programs on Real Hardware

2025-03-30

Chiplab now offers a service to run your 6502 assembly programs on a real 6502 chip, providing cycle-by-cycle bus traces for highly accurate testing and research. Users upload their code, which runs for 100 cycles, after which a detailed trace of address and data bus values is returned. This approach offers a superior alternative to emulators and lays the groundwork for analyzing more complex chips in the future. The project is open-source and welcomes contributions.

(www.emulationonline.com)

Hardware chip emulator

Was Houdini a Spy? The Magician's Secret Life and the CIA's Lost Manuals

2025-04-03

Harry Houdini, the world-famous magician, had a profound, unexpected influence on espionage. Declassified CIA documents reveal that the agency used Houdini's escape techniques, among others, to train clandestine officers in deception. While rumors persist of Houdini acting as a spy for various agencies, concrete evidence remains scarce. Historians debate whether he was a full-fledged spy or simply an 'observer' providing intelligence to President Theodore Roosevelt. This intriguing story blends magic, espionage, and historical mystery.

(www.cia.gov)

Misc Houdini Magic

Firefox and the Silent Audio Killer: How Websites Waste Your CPU and Battery

2025-02-15

The author discovered annoying white noise in Firefox, stemming from websites inefficiently using the WebAudio API's AudioContext. Many sites create and leave AudioContexts active even without playing audio, leading to excessive CPU and battery drain. While Chrome automatically suspends unused AudioContexts, Firefox doesn't, prompting the author to create a browser extension to mitigate the issue. This extension automatically suspends AudioContexts and attempts to resume them when sound is needed, saving resources.

(h.43z.one)

Development browser performance

Is Online Debate Making Us Dumber?

2025-02-17

Is Online Debate Making Us Dumber?

The internet promised a renaissance of discourse, but instead, we find ourselves engaged in low-quality arguments amplified by social media algorithms. These platforms reward conflict, making it difficult to change minds and fostering a Dunning-Kruger effect where confidence outweighs understanding. The author argues that online debate actively harms our thinking, suggesting we shift towards deep reading, writing, and more conducive environments for genuine learning, rather than focusing on winning arguments.

(www.joanwestenberg.com)

Misc online debate cognitive bias

K-12 School Shooting Database: A Chilling Account

2025-02-23

K-12 School Shooting Database: A Chilling Account

The K-12 School Shooting Database tracks all school shootings in the US, regardless of casualties, time, or day. Data includes gang shootings, domestic violence, shootings at sporting events and after-school activities, suicides, fights escalating to shootings, and accidents. This database aims to document the number of school shootings and the full scope of gun violence on school campuses. All uses must cite the source.

(k12ssdb.org)

Misc school shootings gun violence campus safety

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