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INFP: An Audio-Driven Interactive Head Generation Framework for Natural Dyadic Conversations

2024-12-22

ByteDance introduces INFP, a novel audio-driven interactive head generation framework. Given dual-track audio from a dyadic conversation and a single portrait image, INFP dynamically synthesizes realistic agent videos with verbal, nonverbal, and interactive cues, including lifelike facial expressions and head movements. The lightweight framework is ideal for real-time communication like video conferencing. INFP uses a two-stage process: Motion-Based Head Imitation and Audio-Guided Motion Generation. The first stage projects facial communicative behaviors into a low-dimensional latent space, while the second maps dyadic audio to these codes, enabling audio-driven generation. A new large-scale dyadic conversation dataset, DyConv, is also introduced. INFP achieves superior performance and natural interaction.

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(grisoon.github.io)
AI

LiveYou: Revolutionizing Learning with Real-time Interaction

2025-01-04

LiveYou is a groundbreaking online learning platform offering real-time interaction between students and instructors across any subject. Breaking free from traditional learning constraints, LiveYou provides a flexible, personalized learning experience. Users can select instructors and courses tailored to their needs, receiving personalized feedback and guidance through real-time interaction. This platform hints at a potential revolution in online education, offering learning unbound by time and location.

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(tma.live)
Misc online education real-time learning personalized learning

App-Enabled Price Fixing: How Big Tech Masks Monopoly Power

2025-01-26

Big Tech uses apps to mask price-fixing schemes, exacerbating inflation. The article exposes how food industry giants manipulate prices through data brokers and tacit collusion, citing examples in eggs, frozen potatoes, and meat. These companies leverage information asymmetry and technology to squeeze out smaller businesses and reap exorbitant profits. This isn't limited to food; similar issues plague real estate and fire equipment sectors, prompting discussions on antitrust laws and regulatory action.

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(pluralistic.net)
Tech inflation price fixing

Automated Assembly System Creates Cyborg Insects

2024-12-15
Automated Assembly System Creates Cyborg Insects

Scientists have developed an automated system for assembling insect-computer hybrid robots. The system uses a vision-guided robotic arm to precisely implant custom-designed bipolar electrodes onto the backs of Madagascar hissing cockroaches. The entire process takes only 68 seconds, and the assembled robots achieve steering and deceleration control comparable to manually assembled systems. A multi-agent system of 4 robots successfully navigated an obstacle course, demonstrating the feasibility of mass production and real-world applications. This research paves the way for scalable production and deployment of insect robots.

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(arxiv.org)
AI insect robots automated assembly robotics

Comptime Configuration in Zig: Clever Design in httpz and ztl Libraries

2025-01-13

This article explores the techniques of using compile-time metaprogramming for configuration in the Zig programming language. The author uses their httpz and ztl libraries as examples, demonstrating how a generic type parameter `T` can simultaneously serve as both application context and configuration. Functions defined within the `T` type can override the library's default behavior, while fields in `T` can configure scalar values. Compile-time checks ensure the correctness of the configuration and allow for compile-time optimizations, such as adjusting the virtual machine stack size based on the configuration. While this approach requires users to provide configuration at compile time, it offers significant performance improvements and is an effective strategy for building flexible and efficient libraries.

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(www.openmymind.net)
Development Compile-time Configuration

Ocular AI, a YC Startup, Seeks Founding Backend Engineer

2024-12-26
Ocular AI, a YC Startup, Seeks Founding Backend Engineer

Ocular AI, a Y Combinator-backed AI startup, is hiring a Founding Backend Engineer to build backend systems for its data annotation engine. The company helps transform unstructured data into high-quality datasets for generative AI, frontier models, and computer vision. The role requires 3+ years of experience with Python/Node and Postgres for production systems, along with hands-on experience training ML models and building data pipelines. This is a high-impact role working directly with founders to shape product direction and engineering strategy. The ideal candidate enjoys working in a fast-paced, ambiguous environment.

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(www.ycombinator.com)
AI Backend Engineer

GitHub Project TILDNN Updated

2024-12-22
GitHub Project TILDNN Updated

The TILDNN project on GitHub has been updated. The project appears to be related to artificial intelligence or deep learning (inferring from the name). Specific update details are not provided in the given text; accessing the GitHub link is necessary for further information.

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(github.com)
AI Project Update

Another Baltic Sea Undersea Cable Severed; Latvia Deploys Warship

2025-01-26
Another Baltic Sea Undersea Cable Severed; Latvia Deploys Warship

Another undersea data cable, this time connecting Sweden and Latvia, has been cut in the Baltic Sea, prompting Latvia to dispatch a warship. Officials from both countries suspect external factors caused the damage. The incident follows a series of similar events in recent months, raising concerns about potential sabotage and increasing geopolitical tensions in the region. A suspect vessel has been identified, headed towards Russia. The damage disrupts data transmission, but alternative routes have been established, minimizing impact on end-users.

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(www.france24.com)
Tech

Permissionless: A Manifesto for the Future - Summary

2024-12-28
Permissionless: A Manifesto for the Future - Summary

Permissionless: A Manifesto for the Future explores the impact of the 'permissionless' concept on the future. Divided into five parts, the book covers the concept of permissionlessness, the problem of permissions, the role of gatekeepers, a revolution (of sorts), and the permissionless playbook. The author advocates for a decentralized and open future, challenging traditional power structures and control mechanisms, offering a unique perspective on the direction of future societal development.

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(www.permissionlessbook.com)
Misc permissionless future development decentralization

GGML Training Advancement: A MNIST VAE Training Example

2024-12-22
GGML Training Advancement: A MNIST VAE Training Example

GitHub user bssrdf shared an example of training a MNIST VAE using the GGML library. This example aims to use only the GGML pipeline and its ADAM optimizer implementation, filling a gap in available GGML training examples. Modifications were made to the ADAM and LBFGS optimizers for GPU backend compatibility, and several missing operators and optimizer hooks were added for testing and sampling. The results after 10 epochs were satisfactory.

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(github.com)
AI

Engineer Implements Reversible 1D Cellular Automata Using Bitwise Operations

2024-12-12
Engineer Implements Reversible 1D Cellular Automata Using Bitwise Operations

Richard Palethorpe, an engineer, created a demo using the GFXPrim library showcasing a one-dimensional binary cellular automaton and its reversible counterpart. The automaton evolves based on rules where each cell's state is determined by its own state and those of its left and right neighbors. The article details bitwise operation optimizations, such as parallel processing of multiple cells using 64-bit integers and bit rotation to simulate neighbor interaction. Reversible implementation is achieved by XORing with the previous state. The author explores compiler optimization and vectorization impacts on performance and ultimately implements an efficient rendering method.

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(richiejp.com)
Development cellular automata bitwise operations reversible computing

Bloom Filters: The Secret to Making SQLite 10x Faster

2024-12-22

Researchers cleverly used Bloom filters to make SQLite analytical queries 10x faster. They discovered that SQLite's nested loop joins were inefficient, with much time spent on B-tree probes. By using a Bloom filter before the join operation to quickly filter out rows unlikely to match, and then performing B-tree probes only on potential matches, the number of probes was significantly reduced. Bloom filters have minimal memory overhead and were easy to integrate into SQLite's existing query engine, resulting in a significant performance boost. This improvement has been integrated into SQLite v3.38.0.

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(avi.im)
Development Bloom filters Database optimization

Apache Iceberg: A Reliable Table Format for Big Data Analytics

2025-01-26

Apache Iceberg is a high-performance format for massive analytic tables. It allows engines like Spark, Trino, Flink, and more to safely work with the same tables concurrently. Iceberg supports flexible SQL commands for merging data, updating rows, and targeted deletes, optimizing read and write performance through data file rewriting or delta updates. Furthermore, it offers hidden partitioning, time travel, and rollback capabilities for efficient querying and data management.

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(iceberg.apache.org)
Development table format

Rapid Game Prototyping with LÖVE

2024-12-31

A programmer, aiming to complete a full game in 2025, built chess and card game prototypes using the LÖVE2D framework in Lua. LÖVE's simple yet powerful API allowed for complex UI interactions with minimal code, further accelerated by LLM-assisted code generation. The author found LÖVE ideal for prototyping, especially UI, but noted the need for improvements in hot reloading and logic separation for larger projects. The plan is to use LÖVE to develop a basic game MVP.

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(healeycodes.com)
Game game prototyping

AMD Instinct™ MI300X Boosts Ansys Fluent CFD Performance

2025-01-19

AMD released a blog post showcasing the impressive performance of its Instinct™ MI300X accelerator in Ansys Fluent computational fluid dynamics (CFD) simulations. Benchmarks using four benchmark models (sedan car, aircraft wing, exhaust system, and F1 race car) on both AMD MI300X and NVIDIA H100 platforms showed up to a 10% improvement in time-to-solution for the MI300X. This is attributed to the MI300X's 192GB HBM3 memory capacity and high memory bandwidth, along with AMD Infinity Cache™. The blog details the testing methodology, system configurations, and a step-by-step guide to installing and running the benchmarks. The MI300X proves to be an excellent choice for applications requiring steady-state analysis.

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(rocm.blogs.amd.com)
Hardware

GPUs Are So Fast, Why Do We Still Need CPUs?

2025-01-08
GPUs Are So Fast, Why Do We Still Need CPUs?

A viral video uses a painting duel to illustrate the performance difference between CPUs and GPUs: a CPU painstakingly draws a smiley face, while a GPU instantly renders the Mona Lisa. But this overlooks a crucial point: program types. CPUs excel at sequential instructions, while GPUs thrive on parallel processing. Most applications blend sequential and parallel code; for example, a program might be 50% parallelizable. CPUs are like head chefs, adept at handling unexpected events; GPUs are like line cooks, mastering repetitive tasks. Chips like Apple's M3 integrate both, combining CPU flexibility with GPU computing power.

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(codingstuff.substack.com)
Tech parallel processing

California Wildfires Wipe Out Decades of Climate Progress

2025-01-20
California Wildfires Wipe Out Decades of Climate Progress

A University of Chicago study reveals that California's 2020 wildfires negated nearly two decades of emission reduction efforts. The fires caused billions of dollars in economic losses and fatalities, significantly jeopardizing the state's climate goals. The study shows that a single year's wildfire emissions amounted to almost half of California's 2030 emission reduction target, highlighting the critical need for wildfire prevention in state climate policy.

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(news.uchicago.edu)
Tech Greenhouse Gas Emissions

KV Cache Tricks for Faster Language Models

2025-01-28
KV Cache Tricks for Faster Language Models

The slow speed of large language models (LLMs) in text generation stems from the computational complexity of self-attention. This article explores KV caching and its optimization techniques. KV caching stores key-value pairs for each token to avoid redundant computation, reducing complexity from O(n³) to O(n²); however, memory consumption remains substantial. The article delves into 11 papers proposing optimizations: token selection and pruning based on attention scores, post-hoc compression techniques, and architectural redesigns such as Multi-head Latent Attention (MLA). These aim to balance memory usage and computational efficiency, ultimately making models like ChatGPT generate text faster and more efficiently.

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(www.pyspur.dev)
AI KV Cache Self-Attention

The Two Hardest Things in Computer Science: A Deep Dive

2025-01-20
The Two Hardest Things in Computer Science: A Deep Dive

A classic programmer joke states: "There are only two hard things in Computer Science: cache invalidation and naming things." This article traces the origin and evolution of this witty phrase, exploring its humor and deeper meaning. From its initial concise form to variations incorporating 'off-by-one errors' and more, the joke reflects the numerous challenges programmers face daily, highlighting the complexity and amusement inherent in programming.

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(martinfowler.com)
Development

DiscoTool: Effortlessly Manage Your Arduino USB Devices

2025-01-07
DiscoTool: Effortlessly Manage Your Arduino USB Devices

DiscoTool is a powerful command-line tool and Python library for discovering and managing Arduino-type development boards connected to USB. It supports macOS, Linux, and Windows and installs easily via pip without requiring additional installations. DiscoTool offers a rich set of commands, including connecting to the REPL, installing and updating modules, backing up board data, and more. It also allows customization of command-line tools and environment variables. Furthermore, a Python module allows developers to integrate it into their projects for easy access to device information such as manufacturer, serial number, and version.

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(github.com)
Development Development Tool

The Marvelous Disappearing Capacitor: A Clever Trick to Improve Photodiode Amplifier Performance

2024-12-12
The Marvelous Disappearing Capacitor: A Clever Trick to Improve Photodiode Amplifier Performance

This article introduces a clever technique to improve the performance of photodiode amplifiers: bootstrapping. The parasitic capacitance of a photodiode limits its ability to amplify rapidly changing signals. In a traditional transimpedance amplifier (TIA), this capacitance reduces bandwidth. The article analyzes the working principle of a TIA, explaining how the photodiode's parasitic capacitance affects circuit performance. The author presents a bootstrapped circuit using an op-amp and JFET, which effectively eliminates the parasitic capacitance by keeping the voltage across the photodiode terminals virtually the same, significantly improving bandwidth. The article also discusses a variant AC-coupled bootstrapped circuit and provides relevant formulas.

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(lcamtuf.substack.com)
Hardware photodiode bootstrapping transimpedance amplifier

IPv6 Isn't Hard, It's Just Different: A GitHub Case Study

2025-02-16
IPv6 Isn't Hard, It's Just Different: A GitHub Case Study

A Mastodon post lamented the difficulty of IPv6 configuration. The author uses GitHub as an example to show that the problem isn't IPv6 itself, but inadequate configuration and monitoring. Many websites, while having IPv6 address records (AAAA), are actually inaccessible via IPv6 because the browser's Happy Eyeballs mechanism prioritizes faster IPv4. In one case, a customer's split VPN tunnel blocked IPv6 connections. In another, traceroute showed that IPv6 routing terminated earlier than IPv4, indicating a possible firewall rule or routing issue. The author concludes: take IPv6 seriously, or don't use it. Lack of IPv6 monitoring and automation makes problems difficult to detect and resolve.

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(techlog.jenslink.net)
Tech network configuration

Open-Source WebGPU Ray Tracer: Real-time Rendering from glTF Scenes

2024-12-26
Open-Source WebGPU Ray Tracer: Real-time Rendering from glTF Scenes

The open-source project webgpu-raytracer is a software ray tracing engine built using the WebGPU API. It supports glTF scene files and renders materials with albedo, normal, and material maps. The engine utilizes BVH for accelerated ray-scene intersections and employs multiple importance sampling for efficiency. Currently, it supports environment maps and allows camera control via keyboard and mouse, but refraction is not yet supported.

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(github.com)
Development Ray Tracing

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.

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(www.thestar.com.my)
Tech Tech Awards

Multiple Vulnerabilities in Qualcomm DSP Driver Raise Security Concerns

2024-12-16

Google's Project Zero team discovered six vulnerabilities in a Qualcomm DSP driver, one of which was exploited in the wild. Analysis of kernel panic logs provided by Amnesty International, without access to the exploit sample itself, revealed the flaws. A code review uncovered multiple memory corruption vulnerabilities, including use-after-free and refcount leaks. The attacker likely leveraged these vulnerabilities with inotify_event_info object heap spraying to achieve code execution. This highlights the critical need for improved security in Android's third-party drivers.

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(googleprojectzero.blogspot.com)
Tech Qualcomm DSP driver vulnerabilities

Node.js Enables --experimental-strip-types by Default, Enhancing TypeScript Support

2024-12-26
Node.js Enables --experimental-strip-types by Default, Enhancing TypeScript Support

A significant update to Node.js enables the `--experimental-strip-types` flag by default. This means developers can now execute TypeScript files without additional configuration. The change aims to improve TypeScript support and catch more bugs. While still experimental, this marks a major step towards simpler TypeScript development in Node.js, offering developers a more streamlined experience.

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(github.com)
Development Development

OCR Challenge: Digitizing Saint-Simon's Memoirs

2024-12-17

The author spent several weeks using OCR to digitize a late 19th-century edition of the 18th-century French memoirs, *Les Mémoires de Saint-Simon*. This 45-volume behemoth, containing over 3 million words, is available online as images, but is difficult to read. The goal was to create a readable, searchable, and copyable text version. Challenges included poor image quality and parsing different page zones (headers, main text, margin comments, footnotes, etc.). Google Vision API was used for OCR, with a Python program processing the results to identify and separate text from different areas. While LLMs failed to reliably handle footnote references, the author improved the program and incorporated manual review, resulting in the release of the first volume.

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(blog.medusis.com)
Development Text Processing Digital Humanities

SWE-bench: Can LLMs Solve Real-World GitHub Issues?

2025-01-08
SWE-bench: Can LLMs Solve Real-World GitHub Issues?

SWE-bench is a benchmark dataset evaluating large language models' ability to automatically resolve real-world GitHub issues. Researchers compiled 2,294 Issue-Pull Request pairs from 12 popular Python repositories, validating solutions via unit tests. The latest leaderboard showcases various models achieving varying success rates, with some exceeding 50% resolution. The project provides resources including a lite version and pre-trained models for easier evaluation and reproducibility.

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(www.swebench.com)
Development Code Repair

Cambridge Blockchain Network Sustainability Index: Bitcoin Mining Map Reveals Energy Consumption Patterns

2024-12-12

The Cambridge Centre for Alternative Finance (CCAF) released a mining map visualizing global Bitcoin mining energy consumption as part of the Cambridge Blockchain Network Sustainability Index. The map shows the share of Bitcoin mining hashrate by country and region, revealing a seasonal migration pattern of Chinese miners between ‘dry’ and ‘wet’ seasons to leverage cheaper hydropower. However, this migration pattern likely ended after the Chinese government crackdown on the mining industry in June 2021. The research is based on geolocation mining facility data collected in partnership with several Bitcoin mining pools and acknowledges contributions from BTC.com, Poolin, ViaBTC, and Foundry.

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(ccaf.io)
Tech Bitcoin mining energy consumption sustainability
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