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Building LLMs from Scratch: Vectors, Matrices, and High-Dimensional Spaces

2025-09-06

Building LLMs from Scratch: Vectors, Matrices, and High-Dimensional Spaces

This article, the second in a three-part series, demystifies the workings of Large Language Models (LLMs) for technically inclined readers with limited AI expertise. Building on part 19 of a series based on Sebastian Raschka's book "Build a Large Language Model (from Scratch)", it explains the use of vectors, matrices, and high-dimensional spaces (vocab space and embedding space) within LLMs. The author argues that understanding LLM inference requires only high-school level math, while training requires more advanced mathematics. The article details how vectors represent meaning in high-dimensional spaces and how matrix multiplication projects between these spaces, connecting this to linear layers in neural networks.

(www.gilesthomas.com)

AI Vectors Matrices

Less Meat, Lower Carbon Footprint: A Data-Driven Look

2025-05-14

Less Meat, Lower Carbon Footprint: A Data-Driven Look

A comprehensive analysis of global food systems reveals that reducing meat consumption is significantly more effective than focusing on sustainable meat production in lowering dietary carbon footprints. Even the lowest-impact meats have substantially higher emissions than plant-based protein sources like beans and tofu. This conclusion is drawn from a meta-analysis of over 38,000 commercial farms across 119 countries, accounting for variations in production methods and geographic location. While sustainable meat production is crucial, for individuals, consuming less meat or switching to lower-impact options like chicken and pork offers the most impactful way to reduce their carbon footprint.

(ourworldindata.org)

Tech carbon footprint meat consumption

Citizen Science Illuminates Night Light Data: Analyzing the Nachtlichter App

2025-06-19

Citizen Science Illuminates Night Light Data: Analyzing the Nachtlichter App

The Nachtlichter project engaged citizen scientists in observing and recording night-time light sources using a dedicated app. Participants surveyed pre-defined routes, classifying and counting lights by type, size, color, and brightness. Researchers corrected for the effects of lights turning off during the night and combined the data with satellite observations to analyze the relationship between ground-level light counts and satellite-measured radiance. The study demonstrates that Nachtlichter data offer a more comprehensive picture than existing public databases, providing valuable insights into urban lighting patterns.

(www.nature.com)

Tech night lights

Zentool: A Powerful Utility for AMD Zen Microcode Manipulation

2025-03-05

Zentool: A Powerful Utility for AMD Zen Microcode Manipulation

Zentool is a suite of tools for analyzing, manipulating, and generating microcode patches for AMD Zen processors. It includes a frontend command `zentool`, a simple assembler `mcas`, and a disassembler `mcop`. You can inspect and modify various parts of a microcode file, such as the revision number, match registers, and instructions, even creating custom microcode patches. Root privileges are required to load microcode, and modifications need to be re-signed for validity. This tool builds on work by members of the Google Hardware Security Team, and is influenced by relevant books and papers.

(github.com)

Development

China Tightens Facial Recognition Rules, Taiwan Infrastructure Targeted in Cyberattacks

2025-03-24

China Tightens Facial Recognition Rules, Taiwan Infrastructure Targeted in Cyberattacks

China has issued new regulations prohibiting the use of facial recognition technology without consent and restricting its use in public places. Simultaneously, critical infrastructure in Taiwan has been targeted by a suspected China-backed hacking group. Elsewhere, Zoho won India's government-backed web browser competition, while X is suing the Indian government over content takedown laws. Japan's new cybersecurity bill, which allows for offensive cyber operations, is facing privacy concerns. Finally, the Australian Strategic Policy Institute reports being targeted by Chinese online harassment.

(www.theregister.com)

Tech

xAI's Private LLMs Exposed: Two-Month Security Flaw

2025-05-02

An xAI employee leaked a private key on GitHub, granting access for two months to private xAI large language models (LLMs) seemingly tailored for internal data from SpaceX, Tesla, and X (Twitter). Security firm GitGuardian discovered the key allowed access to at least 60 fine-tuned, private LLMs, some trained on SpaceX and Tesla data. Despite GitGuardian alerting the employee two months prior, xAI only recently removed the repository containing the key. This highlights xAI's security vulnerabilities in key management and internal monitoring, raising concerns about data security.

(krebsonsecurity.com)

Tech AI security flaw

Crafting Killer Design Docs: A Practical Guide

2025-08-04

This essay provides a practical guide to writing effective design documents. It likens design docs to mathematical proofs, aiming to convince the reader of a design's optimality. The author stresses clear organization, avoiding the pitfalls of disorganized 'spaghetti design docs'. Key advice includes concise language, one central idea per paragraph, and using appendices for detailed information. Through practice and rigorous editing, the goal is a clear, concise, and persuasive document.

(grantslatton.com)

Development design documents

Unprecedented Clarity: Adaptive Optics Reveal Sun's Corona in Stunning Detail

2025-06-01

Unprecedented Clarity: Adaptive Optics Reveal Sun's Corona in Stunning Detail

Scientists have achieved a breakthrough in solar observation using a new adaptive optics system called 'Cona.' Installed on the 1.6-meter Goode Solar Telescope at Big Bear Solar Observatory, Cona corrects for atmospheric blurring, yielding the clearest images and videos of the Sun's corona ever recorded. The system adjusts its mirror shape 2,200 times per second to compensate for atmospheric turbulence. The resulting images reveal unprecedented detail of rapidly restructuring solar prominences, fine plasma streams, and delicate coronal rain, offering invaluable data for understanding coronal heating and space weather. This technology, poised for widespread adoption, marks a new era in solar physics.

(nso.edu)

Tech solar physics adaptive optics corona

Is the Premier League Losing its Excitement? A Look at Inequality and Draws

2025-07-15

Is the Premier League Losing its Excitement? A Look at Inequality and Draws

This article analyzes the changing dynamics of English football leagues since 1888, focusing on the proportion of drawn matches. The Premier League shows a post-1993 decline in draws, unlike lower leagues. This isn't attributed to stylistic changes but to growing inequality within the Premier League. Top clubs' significantly higher revenues create an uneven playing field, leading to more predictable results and potentially less exciting matches. The analysis raises concerns about fairness and the long-term health of the league's competitiveness.

(blog.engora.com)

Game premier league league inequality

TokenDagger: A Blazing Fast TikToken Implementation

2025-06-30

TokenDagger: A Blazing Fast TikToken Implementation

TokenDagger offers a high-performance alternative to OpenAI's TikToken, optimized for large-scale text processing. Benchmarks show TokenDagger achieving over 4x speedup on code tokenization and a 2x throughput increase compared to TikToken. Leveraging an optimized PCRE2 regex engine and a simplified BPE algorithm to mitigate the performance impact of large special token vocabularies, TokenDagger provides a drop-in replacement. Installation and performance testing are straightforward with a few simple commands.

(github.com)

Development

Aeroflot Flight 1492: A Deadly Convergence of Pilot Error and Systemic Failures

2025-05-13

Aeroflot Flight 1492: A Deadly Convergence of Pilot Error and Systemic Failures

This article provides a detailed analysis of the 2019 Aeroflot Flight 1492 crash. The accident resulted from multiple bounces during a landing in severe weather, ultimately leading to a crash and fire that killed 41. The investigation revealed pilot error, aircraft design flaws, and inadequate airline training as primary causes. The aircraft's fly-by-wire system lacked sufficient redundancy and safety mechanisms; the pilot lacked adequate training and emergency response capabilities; and the airline had insufficient safety management and training deficiencies. The accident highlights the severity of systemic safety issues within the Russian aviation sector.

(admiralcloudberg.medium.com)

Tech pilot error systemic safety issues

Mycelium: A Novel Data Storage and Transfer Format

2025-05-14

Mycelium: A Novel Data Storage and Transfer Format

Mycelium is a typed format for storing and transferring data, supporting refs, expressions, functions, and types. Its virtual machine, MVM, is designed for efficiency with immutable values and inter-process communication via ports. MycZip encodes Mycelium values into single files, while the Mycelium Network Protocol (MNP), built on QUIC, facilitates peer-to-peer data transfer and caching for optimization. The Spore language provides a user-friendly interface for the MVM.

(github.com)

Development

Shocking Study: Half of College English Majors Can't Understand Dickens

2025-05-23

Shocking Study: Half of College English Majors Can't Understand Dickens

A study of English majors at two Kansas public universities reveals a startling truth: 58% struggled to comprehend even the opening paragraphs of Dickens' *Bleak House*, failing to distinguish between literal and figurative language. Even with dictionaries and phones, many students were overwhelmed by complex sentences and unfamiliar vocabulary. While scoring well on standardized reading tests, they lacked the skills to tackle complex literary texts—a significant problem considering many were training to be high school English teachers. Researchers expressed alarm at the findings, emphasizing the need for universities to address students' actual reading levels to avoid awarding degrees to those lacking proficiency in reading complex texts.

(kittenbeloved.substack.com)

Misc

Major Internet Outage Hits Pakistan

2025-08-20

Major Internet Outage Hits Pakistan

A significant internet disruption hit Pakistan on Tuesday evening, reducing connectivity to a mere 20% of normal levels, according to NetBlocks, a global internet observatory. The outage, starting late in the evening, affected multiple regions, cutting off millions from online services. NetBlocks reported a major disruption impacting the backbone operator PTCL, significantly reducing national connectivity. As of late Tuesday night, neither PTCL nor the Pakistan Telecommunication Authority (PTA) had offered an official explanation or restoration timeline. The outage disrupted businesses, banking, and communication, causing widespread frustration and concern on social media.

(profit.pakistantoday.com.pk)

Tech internet outage network failure

YC Startup Inboxbooster Seeking JVM Bytecode Engineer (Remote)

2025-01-25

YC Startup Inboxbooster Seeking JVM Bytecode Engineer (Remote)

Inboxbooster, a Y Combinator-backed startup, is hiring a remote JVM Bytecode Engineer. They're building technology that automatically parallelizes Java applications by transforming bytecode post-compilation, already demonstrating a 2.8x speedup. The role requires deep JVM internals knowledge, bytecode manipulation expertise, and Java concurrency skills. You'll be crucial in transforming a prototype into a production-ready system. This is a challenging and rewarding opportunity for engineers passionate about revolutionizing software performance.

(www.ycombinator.com)

Development parallelization

Microsoft Email Censorship Sparks Employee Protests

2025-05-22

Microsoft Email Censorship Sparks Employee Protests

Microsoft employees have reported that emails containing words like "Palestine" or "Gaza" are being temporarily blocked. The No Azure for Apartheid (NOAA) group claims dozens of employees are affected. Microsoft says it's to reduce "politically focused emails," but the move has sparked concerns about free speech. This comes amid ongoing protests against Microsoft's contracts with the Israeli government, with several employees disrupting Microsoft's Build conference, resulting in at least one dismissal.

(www.theverge.com)

Tech Palestinian protests

Facebook Embraces Passkeys: A Giant Leap for Account Security

2025-06-18

Facebook Embraces Passkeys: A Giant Leap for Account Security

Facebook has announced support for passkeys, a new authentication method combining the ease of passwords with the robust security of 2FA. Passkeys utilize your device (like your smartphone) for authentication, eliminating the need for passwords and rendering phishing attacks and data breaches far less effective. Setup is straightforward through Account Center's 'Password and security' settings. While creating a passkey doesn't delete your Facebook password, it significantly enhances account security, making it a highly recommended upgrade.

(lifehacker.com)

Tech

The Seven-Year Rule: Embrace Your Ever-Changing Self

2025-04-26

Inspired by the Dalai Lama's concept, this article explores the idea that we are completely reborn every seven years due to cellular regeneration. The author argues that clinging to past mistakes or triumphs is futile, as that person no longer exists. By focusing on the present moment and embracing this constant transformation, we liberate ourselves and better shape our future selves.

(www.macsparky.com)

Misc

Saying Goodbye to Certainty: Probabilistic Programming in Swift

2025-08-29

This article introduces a novel approach to handling uncertain data in Swift: Uncertain. It encodes probability directly into the type system, elegantly addressing issues like the imprecision of GPS coordinates. Using probability distributions and Monte Carlo sampling, developers can more accurately model real-world uncertainties, building more robust and reliable applications. The article provides a Swift library based on Uncertain and includes examples demonstrating how to handle various probability distributions and perform statistical analysis.

(nshipster.com)

Development Probabilistic Programming Uncertainty

Debugging Views: A Programmer's Time Saver

2025-08-21

Programmer Sophie encountered a bug in the Unison project, requiring complex SQL queries to track down the issue. The author introduces a solution: creating database views to streamline the debugging process. Pre-defined views join multiple tables, presenting data in a more readable format, eliminating the need to repeatedly write complex JOIN statements for each debugging session. While this approach might slightly impact performance on specific queries, it significantly improves debugging efficiency and saves development time.

(chrispenner.ca)

Development

Nearby Galaxy's Hidden Monster: Hypervelocity Stars Reveal Supermassive Black Hole

2025-03-09

Nearby Galaxy's Hidden Monster: Hypervelocity Stars Reveal Supermassive Black Hole

A new study suggests a previously unknown supermassive black hole lurks in the nearby Large Magellanic Cloud. Researchers tracked hypervelocity stars, finding their trajectories didn't originate from our galaxy's central black hole, but rather from a black hole within the Large Magellanic Cloud, estimated to be 600,000 times the mass of our Sun. This strongly supports the existence of a supermassive black hole at the Large Magellanic Cloud's center, offering new insights into galactic evolution. The search is now on to directly detect this hidden object using various telescopes.

(www.npr.org)

Tech hypervelocity stars Large Magellanic Cloud

Averaging Numbers in Prolog: A Recursive Circus

2025-05-07

This article humorously illustrates calculating an average in Prolog, progressing from a simple mathematical definition to an excessively verbose recursive implementation. The author critiques the pedagogical constraint of prohibiting standard Prolog library functions, resulting in redundant and less readable code. The article contrasts a concise mathematical approach with a cumbersome recursive solution, arguing for prioritizing code readability and maintainability over mere recursive exercise in teaching.

(storytotell.org)

Development

Domains I Love: A Collection of Cute and Clever Names

2025-06-09

This blog post lists some of the author's favorite domain names, such as abc.xyz, 1e100.net, and n.pr, appreciating their brevity and cleverness. The author emphasizes that the appeal lies in the domains themselves, not the websites they link to. While several are Google domains, this is purely coincidental. The post concludes with a mention of the author's fondness for cool usernames and email addresses.

(www.ahmedsaoudi.com)

Misc domain names personal preferences

OpenTyrian2000: A Cross-Platform Triumph from iOS to ESP32

2025-06-30

OpenTyrian2000: A Cross-Platform Triumph from iOS to ESP32

OpenTyrian2000 has achieved a remarkable cross-platform port, supporting macOS, iOS, Apple TV, VisionOS, Windows, Android, Linux, PS Vita, PSP, Nintendo 3DS, and even ESP32 microcontrollers. Leveraging SDL3 and SDL2, the project boasts fixes for networking support, added IPv6 compatibility, and app sandboxing for iOS and other platforms. From ARM to x86, mobile to console, OpenTyrian2000's successful port showcases its impressive portability and compatibility.

(github.com)

Game game porting

vLLM V1: Serving LLMs Efficiently at Scale

2025-06-29

vLLM V1: Serving LLMs Efficiently at Scale

Ubicloud's open-source cloud service leverages vLLM V1 to serve large language models efficiently. This article delves into the vLLM V1 architecture, detailing the journey of an inference request from reception, scheduling, and model execution to output processing. Key technologies like asynchronous IPC, continuous batching, and KV cache management are explained. vLLM V1 maximizes GPU utilization through asynchronous processing, a continuous batching algorithm, and parallel GPU computation, enabling high-throughput text generation at scale. This provides valuable insights for AI engineers deploying LLMs and those interested in understanding how large language models are served efficiently.

(www.ubicloud.com)

AI model inference

Waymo's NYC RoboTaxi Ambitions Hit Regulatory Snag

2025-06-18

Waymo's NYC RoboTaxi Ambitions Hit Regulatory Snag

Waymo aims to launch a fully autonomous robotaxi service in New York City, but first needs to overcome a state law requiring safety drivers. While Waymo applied for a permit to test its vehicles with safety drivers, the company is lobbying to change the law to allow driverless operation. The complex traffic conditions of NYC, along with legislative reservations, pose significant hurdles. Other states have been more receptive to AV testing, highlighting New York's stricter regulations and cautious approach.

(www.theverge.com)

Tech

AI Darwin Awards: Celebrating AI-Fueled Disasters

2025-09-10

AI Darwin Awards: Celebrating AI-Fueled Disasters

The first-ever AI Darwin Awards highlight cautionary tales of AI misapplication. From a Taco Bell drive-thru's AI order-taking system failure to a Replit coding mishap that destroyed a production database, and a McDonald's AI chatbot security breach exposing millions of applicants' data, these incidents underscore the importance of responsible AI implementation. The awards don't mock AI itself, but rather the disastrous consequences of its careless application. The message? AI is a powerful tool, like a chainsaw or a nuclear reactor—use it wisely.

(www.theregister.com)

AI

Continuous Thought Machines: Giving AI a Sense of Time

2025-05-12

Continuous Thought Machines: Giving AI a Sense of Time

Modern AI systems sacrifice the crucial property of synchronized neural computation found in biological brains for the sake of efficiency. Researchers introduce the Continuous Thought Machine (CTM), a novel neural network architecture that incorporates neural timing as a foundational element, using a decoupled internal dimension to model the temporal evolution of neural activity. CTM leverages neural synchronization as a latent representation, demonstrating impressive capabilities in tasks such as image classification, maze solving, and parity checks, even building an internal world model for reasoning. Its adaptive computation and interpretability open new avenues for AI research.

(pub.sakana.ai)

AI temporal encoding

4.4KB Ultra-Lightweight AI Agent Executes Shell Commands via OpenRouter API

2025-08-25

4.4KB Ultra-Lightweight AI Agent Executes Shell Commands via OpenRouter API

An ultra-lightweight AI agent written in C that communicates with the OpenRouter API and executes shell commands. Key features include: direct shell command execution via AI responses; optimized binaries (4.4KB on macOS, ~16KB on Linux); sliding window memory management for efficiency; cross-platform support for macOS and Linux. Requires GCC, curl, and an OpenRouter API key. The build system auto-detects your platform and applies optimal compression (GZEXE for macOS, UPX for Linux). The code is public domain, with no license.

(github.com)

Development shell commands

GRiSP: Tiny BEAM VMs for Embedded and Real-Time Systems

2025-09-02

GRiSP: Tiny BEAM VMs for Embedded and Real-Time Systems

The GRiSP family introduces three Erlang/Elixir runtimes: Metal, a tiny BEAM for microcontrollers fitting in 16MB RAM; Alloy, a Buildroot-based real-time Linux system supporting multiple VMs; and Forge, a Yocto-based solution offering customization and long-term support. All boast fast boot times, security, and direct BEAM boot, offering a compelling option for edge computing and real-time applications.

(www.grisp.org)

Development Real-time systems

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