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Minimal Automatic Differentiation Engine in Rust

2025-06-20
Minimal Automatic Differentiation Engine in Rust

This is a minimal automatic differentiation engine written in Rust. It can train a tiny Multi-Layer Perceptron to learn the XOR function and render a computation graph of a single Perceptron to graph.html. The core is the Scalar struct, storing value, optional gradient, and an Edge describing the operation that produced it. Operator overloads and helper functions build a directed acyclic graph, caching the local derivative for every edge. `backward()` recursively propagates gradients from the output node, accumulating them into leaf nodes created with `Scalar::new_grad`. The graph can be visualized with `plot::dump_graph`.

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(github.com)
Development Automatic Differentiation

Washington Post Drops 'Democracy Dies in Darkness' Slogan

2025-01-16
Washington Post Drops 'Democracy Dies in Darkness' Slogan

The Washington Post has abandoned its iconic 'Democracy Dies in Darkness' slogan, replacing it with 'Riveting Storytelling for All of America.' This shift has sparked internal controversy and is linked to owner Jeff Bezos' refusal to endorse Kamala Harris and a pursuit of aggressive growth targets. The new strategy emphasizes an AI-powered platform to deliver news to all Americans, aiming for 200 million paying users. This move is seen as a strategic pivot driven by commercial pressures, raising concerns about the Post's journalistic independence and values.

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(www.avclub.com)
Tech Washington Post Journalism Business Strategy

CppMatch: A Rust-like Error Handling and Pattern Matching Library for C++

2025-03-16
CppMatch: A Rust-like Error Handling and Pattern Matching Library for C++

CppMatch is a lightweight header-only C++ library bringing Rust-style exception handling and pattern matching to C++. It uses a `Result` type to represent success or failure, simplifies error handling with the `expect` macro, and implements pattern matching with the `match` macro. It also offers `zip_match` to combine multiple `Result` objects. Compatible with Clang and GCC, CppMatch offers various error handling strategies, including handling different error types with lambdas. It's a compelling option for C++ developers seeking the elegance of Rust's error handling.

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(github.com)
Development Pattern Matching

Biden's Last-Minute Cybersecurity EO: AI, Microsoft, and More

2025-01-16
Biden's Last-Minute Cybersecurity EO: AI, Microsoft, and More

In a parting shot, President Biden issued a sweeping cybersecurity executive order aimed at bolstering federal cybersecurity, regulating government AI use, and subtly targeting Microsoft's dominance. The 40-page order mandates improvements in government network monitoring, software procurement, AI implementation, and the punishment of foreign hackers. It seeks to leverage AI's benefits, introduce digital identities for US citizens, and close vulnerabilities exploited by adversaries like China and Russia. Key provisions include requiring software vendors to prove secure development practices, enhancing cloud authentication key protection (in response to incidents like the Microsoft server breach), and boosting CISA's network monitoring capabilities. The order also promotes AI research for cybersecurity and aims to streamline citizen services through digital identity documents.

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(www.wired.com)
Tech executive order

Helix: A Vision-Language-Action Model for General-Purpose Robotic Manipulation

2025-02-20
Helix: A Vision-Language-Action Model for General-Purpose Robotic Manipulation

Figure introduces Helix, a groundbreaking Vision-Language-Action (VLA) model unifying perception, language understanding, and learned control to overcome long-standing robotics challenges. Helix achieves several firsts: full upper-body high-rate continuous control, multi-robot collaboration, and the ability to pick up virtually any small household object using only natural language instructions. A single neural network learns all behaviors without task-specific fine-tuning, running on embedded low-power GPUs for commercial readiness. Helix's "System 1" (fast reactive visuomotor policy) and "System 2" (internet-pretrained VLM) architecture enables fast generalization and precise control, paving the way for scaling humanoid robots to home environments.

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(www.figure.ai)
AI Vision-Language-Action

AMD's Versal RF Series: Revolutionizing RF Signal Processing with Integrated Direct RF-Sampling

2025-02-04
AMD's Versal RF Series: Revolutionizing RF Signal Processing with Integrated Direct RF-Sampling

AMD is revolutionizing RF signal processing with its new Versal RF Series adaptive SoCs. These chips integrate high-resolution RF data converters, hard IP DSP compute blocks, and AI engines onto a single die, delivering up to 80 TOPS of DSP performance and 32 GSPS sample rates. Targeting aerospace & defense and test & measurement markets, the Versal RF Series boasts 19x more DSP compute and 80% lower power consumption compared to its predecessor. Its high-resolution, wideband spectrum observability and low-latency processing make it ideal for applications like phased array radar, electromagnetic spectrum operations, and military satellite communication terminals.

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(www.electronicsweekly.com)
Hardware RF Data Converters

Cheap Smartwatch Security Flaw Exposes Sensitive Health Data

2025-02-12
Cheap Smartwatch Security Flaw Exposes Sensitive Health Data

A security researcher reverse-engineered a low-cost smartwatch, revealing a critical vulnerability. The watch, using the VeryFit app, lacks authentication, allowing anyone to connect and access sensitive health data—activity, sleep, heart rate, even menstrual cycles—without any security measures. The researcher created a website to extract and convert this data to TCX format. This highlights the security risks of budget smartwatches and underscores the need for user caution.

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(sprocketfox.io)
Tech smartwatch security

The Entropy of Large Language Model Output: An Information-Theoretic Perspective

2025-01-13

This post explores the output of large language models (LLMs like ChatGPT) from an information-theoretic perspective. The author calculates the entropy of each output token to measure the model's certainty in predicting the next token. Experiments show lower entropy (higher certainty) at sentence endings or word fragments, and higher entropy (more uncertainty) in descriptive statements. A comparison of token types at low vs. high entropy reveals that low entropy often correlates with factual statements (containing proper nouns), while high entropy correlates with descriptive statements. A Tamil language example is used for further illustration, emphasizing the importance of discerning truth from falsehood.

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(nikkin.dev)
AI Entropy Information Theory

Bluesky's Trending Topics: A Curated Overview

2025-01-23

Bluesky social media platform showcases a vibrant array of trending feeds, categorized into diverse interests such as science, pets, books, music, gaming, art, Black culture, and sports. These curated feeds, organized by keywords and hashtags, offer users streamlined access to engaging content. The platform also provides tools for users to create and manage their own thematic feeds.

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(www.bskyinfo.com)
Tech Curated Feeds

Goodbye, Java's Hello World: A Programmer's Catharsis

2025-09-16

On September 16th, 2025, Ethan McCue penned a scathing critique of the classic Java "Hello World" program, highlighting its verbose and cumbersome nature. He juxtaposes the old, lengthy code with a streamlined modern equivalent, expressing his relief at its simplification. The article is filled with emotional outbursts, inviting fellow programmers to celebrate the demise of this outdated ritual and share their own memories of wrestling with the archaic code. A humorous anecdote about a former classmate adds a personal touch to the rant.

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(mccue.dev)
Development

YouTube Mass Channel Ban: A Music Copyright Purge?

2025-02-16

This code snippet reveals a mass ban of YouTube channels by administrators between January and February 2025. The affected channels primarily featured background music, spanning genres like Lo-Fi, City Pop, and Ambient. The action has sparked speculation, with some suggesting copyright infringement as the cause, while others point to algorithmic misjudgment by YouTube. The impact on independent musicians and creators is significant, leading to discussions about the platform's content moderation practices.

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(surasshu.com)
Misc

6.4TB SQLite Database Powers Searchcode.com's Upgrade

2025-02-17

Searchcode.com, a source code search engine, migrated its database from MySQL to SQLite, resulting in a massive 6.4TB SQLite database—likely one of the largest publicly facing instances. Driven by a desire for a single binary deployment and reduced dependencies, the migration wasn't without challenges. Issues like database locking and cross-compilation complexities were overcome using dual database connections, a pure Go SQLite version, and filesystem-level compression (BTRFS with zstd). The result? A significantly faster and more scalable Searchcode.com with improved search speed and backend processes.

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(boyter.org)
Development Database Migration Source Code Search Engine

Nonlinear Optics Sandbox: AI-Powered Control of Complex Optical Systems

2025-01-17
Nonlinear Optics Sandbox: AI-Powered Control of Complex Optical Systems

WestonCB's Nonlinear Optics Sandbox is an interactive platform for studying controlled nonlinear dynamics through the simulation of coupled optical fields. The project uses a specific optical configuration—coupled fundamental/harmonic fields interacting with an adaptive medium—as an idealized model to explore how optimization processes can guide complex nonlinear systems towards desired states. It combines real-time visualization, GPU-accelerated physics simulation, and gradient-based optimization, offering a novel tool for researching nonlinear dynamics and the control of complex systems.

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(github.com)
Tech Nonlinear Optics AI Optimization Complex Systems

Supreme Court Upholds TikTok Ban: National Security Trumps Free Speech

2025-01-17
Supreme Court Upholds TikTok Ban: National Security Trumps Free Speech

The Supreme Court unanimously upheld a federal law banning TikTok unless its Chinese parent company sells it. The ruling prioritizes national security concerns over free speech arguments, citing risks posed by TikTok's ties to China. While President-elect Trump suggested a negotiated solution and the Biden administration indicated it wouldn't enforce the ban immediately, the decision leaves TikTok's future in the US uncertain. The court found the law did not violate petitioners' First Amendment rights.

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(apnews.com)
Tech US-China Tech Rivalry

The Communication Challenges of Decentralized Remote Work and AI's Solution

2025-02-19

The author works in a highly decentralized remote organization and faces challenges with inefficient communication. Information spreads through various informal channels (such as Zoom, TikTok, etc.), leading to frequent misunderstandings and a lack of clear records and traceability. The author likens this phenomenon to the return of an "oral culture" and believes that AI technology can help organizations improve communication efficiency by processing unstructured information into understandable structured information.

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(www.oblomovka.com)
Development decentralized organization

Django 5.2 Released: Composite Primary Keys and Simplified BoundField Overriding

2025-04-02
Django 5.2 Released: Composite Primary Keys and Simplified BoundField Overriding

Django 5.2 has been released! Key features include automatic model import in the shell, support for composite primary keys (using multiple fields as a primary key), and simplified BoundField overriding. Django 5.1 has entered security maintenance, while Django 5.0 has reached end-of-life. All users are strongly encouraged to upgrade to 5.2 for continued security fixes and bug patches.

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(www.djangoproject.com)
Development

Washing Machine Woes: A Metaphor for Software Estimation

2025-02-18

The author's recent experience installing a washing machine in a new home turned into a four-hour ordeal, far exceeding the initial ten-minute estimate. Unexpected problems arose, from drilling holes to replacing hoses, highlighting the challenges of software development estimation. The author draws a parallel between the unforeseen complications of the washing machine installation and the difficulties in accurately estimating software projects. Seemingly simple tasks often encounter unexpected obstacles, such as outdated tools, incompatible systems, or hidden requirements, leading to significant delays. The washing machine saga serves as a compelling metaphor for the unpredictable nature of software development, emphasizing the importance of thorough requirements gathering and risk assessment.

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(www.cosive.com)
Development project estimation

Jevons Paradox: Efficiency Gains Lead to Increased Consumption?

2025-01-29
Jevons Paradox: Efficiency Gains Lead to Increased Consumption?

The Jevons paradox, in economics, describes how technological advancements increasing resource efficiency can paradoxically lead to higher overall consumption. In 1865, Jevons noted that improvements in steam engine efficiency actually increased coal consumption. Modern economics identifies a 'rebound effect' where efficiency lowers costs, boosting demand. The Jevons paradox occurs when this rebound effect outweighs efficiency gains. Debate exists on the rebound effect's size and relevance to conservation policy; some suggest pairing efficiency improvements with policies limiting consumption.

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(en.wikipedia.org)
Tech Jevons Paradox Resource Efficiency Rebound Effect

IAPSOP: A Digital Archive of Spiritualist and Occult Periodicals

2025-08-19

IAPSOP, a US-based private organization, digitally preserves Spiritualist and occult periodicals published between the Congress of Vienna and World War II. Run entirely by volunteers, they digitize, index, and freely provide these periodicals to students and researchers. They actively seek donations of materials and labor and welcome inquiries from sellers. The website offers various access points: direct archive search, thematic lists, and a lessons archive. Contact IAPSOP Customer Support for assistance or technical issues.

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(iapsop.com)
Misc occult periodicals

Beyond Paris: Balzac's 'The Lily in the Valley'

2025-02-02
Beyond Paris: Balzac's 'The Lily in the Valley'

This article delves into Balzac's 'The Lily in the Valley', a novel that transcends its Parisian setting to offer profound insights into societal structures, environmental influences, and the complexities of human relationships. The epistolary novel unfolds a story of platonic love between the protagonist Félix and a married countess. The author analyzes the intricate characters and Balzac's masterful portrayal of their inner lives against the backdrop of French society, revealing a critical reflection on the era's social and economic forces. While Parisian settings feature, the novel's core lies in its exploration of love, human nature, and the transformative currents of society.

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(www.lrb.co.uk)
Misc Balzac French Literature

LastPass Android App Privacy Report: Deep Dive into Trackers and Permissions

2025-01-04
LastPass Android App Privacy Report: Deep Dive into Trackers and Permissions

A privacy report on LastPass Android app version 4.11.18.6150 reveals 7 trackers and 36 permissions. Trackers include AppsFlyer, Google Analytics, etc., collecting user data. Permissions cover sensitive areas like location, network access, and storage access. The report highlights high-risk permissions, potentially impacting user privacy. Users should carefully evaluate the privacy implications.

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(reports.exodus-privacy.eu.org)
Tech

Visual Programming's Future: Beyond Nodes and Wires

2025-09-14
Visual Programming's Future: Beyond Nodes and Wires

This article explores the limitations of visual programming, arguing that it has long been trapped in the node-and-wire paradigm, neglecting the principle of "form follows function." Using CellPond as an example, the author highlights that its success lies in defining the underlying function (only four operations) first, with the form emerging naturally. The author further elaborates on the threefold meaning of "function": intrinsic nature, rationality, and algebra, and argues that visual programming should focus on leveraging the human visual cortex's pattern recognition capabilities to model problems, rather than simply mimicking textual programming. The article proposes modeling problems as entities and relationships, and utilizing visual elements (color, grouping, motion) to represent state changes, thus breaking through the limitations of existing visual programming and creating more powerful programming tools.

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(interjectedfuture.com)
Development

Bagels: A Powerful Terminal-Based Expense Tracker

2025-01-27
Bagels: A Powerful Terminal-Based Expense Tracker

Bagels is a powerful expense tracker that lives in your terminal. Track and analyze your finances with ease using features like accounts, subcategories, splits, transfers, and recurring transaction templates. The clean interface offers customizable keybindings and defaults. All data is stored locally, providing privacy and convenience. Installation is simple for both macOS and Windows.

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(github.com)
Development expense tracker

US Silently Deporting Students: AI-Powered Visa Crackdown

2025-03-30
US Silently Deporting Students: AI-Powered Visa Crackdown

The Trump administration is secretly targeting students for deportation, utilizing a rarely used immigration provision. They are manipulating the SEVIS database to revoke student statuses without notifying students or universities, leading to surprise arrests. The State Department has revoked at least 300 visas, reportedly using AI to monitor social media for justification. Many affected students hail from the Middle East and Muslim-majority countries, with some reporting no political activism or inflammatory social media posts. This highlights the administration's harsh immigration stance, disregard for individual rights, and the potential for technology misuse to infringe on freedoms.

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(zeteo.com)
Tech US immigration policy student deportations

Xiaomi's Draconian Bootloader Unlock Policy Sparks Debate

2025-01-03
Xiaomi's Draconian Bootloader Unlock Policy Sparks Debate

Xiaomi has drastically tightened its bootloader unlock policy, limiting users to unlocking only one device per year. While this change minimally impacts average consumers, it could significantly hinder custom ROM development. This move has sparked a debate about device ownership and user freedom, with speculation focusing on Xiaomi's motivations, including preventing users from bypassing built-in ads and tracking, or thwarting scalpers reselling phones with modified software. Users see this as restricting choice, while developers worry about reduced efficiency in custom ROM creation.

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(www.androidpolice.com)
Tech Custom ROM

Bye Bye, Paid Note-Taking Apps: Building My Secure & Private Knowledge Vault

2025-05-18
Bye Bye, Paid Note-Taking Apps: Building My Secure & Private Knowledge Vault

Tired of privacy concerns and high costs associated with commercial note-taking apps, the author decided to build their own secure, private, and lasting Personal Knowledge Management System (PKMS). They share their journey from Obsidian to a self-hosted PKMS, emphasizing data security and control. The system uses the open-source platform Directus and stores notes in Markdown, enabling easy cross-device access and data migration. While seemingly complex, the author argues the process is surprisingly simple and encourages others to build their own knowledge vaults for better knowledge management.

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(amberwilliams.io)
Development Personal Knowledge Management Knowledge Vault

Infosec for Activists: A Guide to Protecting Your Digital Footprint

2025-02-05

This guide helps activists protect their digital security and privacy. It highlights the increasing risks activists face in today's technological landscape, where law enforcement can readily access user data. The guide recommends privacy-focused tools like DuckDuckGo, Signal, Jitsi, and Bitwarden, and provides detailed instructions for securing phones, including disabling GPS, Bluetooth, and WiFi, and setting strong passwords and enabling two-factor authentication. It also advises activists on pre-action, during-action, and post-action security measures to minimize personal information exposure.

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(infosecforactivists.org)
Development digital privacy activism

Mastra: A TypeScript Framework for Rapid AI App Development

2025-02-19
Mastra: A TypeScript Framework for Rapid AI App Development

Mastra is an opinionated TypeScript framework for quickly building AI applications and features. It provides essential primitives: workflows, agents, RAG, integrations, and evaluations. Run Mastra locally or deploy to a serverless cloud. Key features include LLM model integration (supporting OpenAI, Anthropic, Google Gemini via the Vercel AI SDK), agent systems enabling LLMs to use tools and access data, typed tool functions, durable graph-based workflows, RAG knowledge base construction, pre-built third-party API clients, and automated evaluations. Get started with `create-mastra` and open the playground with `mastra dev`. Contributions are welcome!

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(github.com)
Development AI framework

Rare Kimsuky Leak Reveals Tactics and Infrastructure of North Korean-Linked APT

2025-09-07
Rare Kimsuky Leak Reveals Tactics and Infrastructure of North Korean-Linked APT

A rare security incident involving a data breach attributed to a North Korean-affiliated actor, dubbed “Kim,” offers unprecedented insights into Kimsuky (APT43) tactics, techniques, and infrastructure. The group focuses on credential-centric intrusions targeting South Korean and Taiwanese networks, blending Chinese-language tooling, infrastructure, and potential logistical support. The “Kim” dump, containing bash histories, phishing domains, OCR workflows, compiled stagers, and rootkit evidence, reveals a hybrid operation between DPRK attribution and Chinese resource utilization. The leaked data includes malware development, OCR parsing of Korean PKI and VPN documents, and reconnaissance targeting Taiwanese government and academic institutions. Analysts uncovered an advanced Linux rootkit employing syscall hooking and stealth persistence. The incident highlights the evolving capabilities of North Korean threat actors and their potential connections to Chinese resources.

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(dti.domaintools.com)
Tech
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