Hacker News - Wednesday, October 18th 2023
Localization Failure: Temperature Is Hard
The Guardian, a popular news source, recently made an error in one of their headlines that involved temperature conversions. The headline claimed that the temperature was 68 °F above average, which seemed unrealistic for a tropical country. Upon closer examination, it was found that the actual temperature increase was 32 °F, not 68 °F. The problem arose when converting Celsius to Fahrenheit temperatures. While the conversion requires multiplying by 1.8 and adding 32 °F for an absolute temperature, when dealing with temperature differences, only multiplying by 1.8 is necessary. In this case, someone in the localization team or an algorithm mistakenly added 32 °F to the temperature difference. The issue highlights the fallacy of saying something is "twice as hot" when the temperature changes. Therefore, translating 20 °C requires careful examination of the context, with different translations possible depending on whether it's an absolute temperature or a temperature difference.
4K4D: Real-Time 4D View Synthesis at 4K Resolution
In this paper, the authors propose a method called 4K4D for high-fidelity and real-time view synthesis of dynamic 3D scenes at 4K resolution. While there have been methods that achieve impressive rendering quality for dynamic view synthesis, their speed is limited when it comes to rendering high-resolution images. To overcome this limitation, the authors introduce 4K4D, a 4D point cloud representation that leverages hardware rasterization to achieve unprecedented rendering speed. Their representation is based on a 4D feature grid, which provides regularization and robust optimization for the points. In addition, the authors develop a hybrid appearance model that enhances rendering quality while maintaining efficiency. They also present a differentiable depth peeling algorithm to learn the proposed model from RGB videos effectively. Experimental results demonstrate that the 4K4D representation can be rendered at over 400 frames per second (FPS) on the DNA-Rendering dataset at 1080p resolution and 80 FPS on the ENeRF-Outdoor dataset at 4K resolution using an RTX 4090 GPU. This significantly outperforms previous methods, achieving a rendering speed 30 times faster and state-of-the-art quality.
Psytrance Guide
Goa Trance emerged in the 80's in Goa, India, and is considered the ancestor of all Psytrance music. It gained global recognition in the mid 90's. Unlike other electronic music genres, Goa Trance is known for its "organic" sound, devoid of metallic elements. It incorporates oriental aesthetics in its melodies, often featuring Indian consonance and tribal elements from Indian culture. The genre draws inspiration from Buddhist and Hinduist mythology and mysticism. While Goa Trance is now considered oldschool, some artists and labels continue to release new music under the subgenres of New School or Neogoa. This allows the genre to evolve while still paying homage to its roots. Overall, Goa Trance remains influential in the Psytrance scene and holds a special place in the history of electronic music.
Google opens Falcon, a reliable low-latency hardware transport, to the ecosystem
Falcon, a new transport protocol developed by Microsoft, aims to achieve low latency in high-bandwidth, lossy Ethernet data center networks. It utilizes three key insights to achieve this: fine-grained hardware-assisted round-trip time measurements, flexible per-flow hardware-enforced traffic shaping, and fast and accurate packet retransmissions. Falcon also incorporates multipath-capable and Falcon connections to further optimize performance. Additionally, it has been designed as a multi-protocol transport that can support a wide range of performance requirements and application semantics. The ULP mapping layer of Falcon enables compatibility with Infiniband Verbs RDMA and NVMe ULPs. It also includes innovations such as flexible ordering semantics and graceful error handling, which are crucial for warehouse-scale applications. Moreover, Falcon's hardware and software components are co-designed to work together, ensuring high message rate, low latency, and high bandwidth. This co-design approach also allows for programmability and continued innovation. Overall, Falcon offers a robust and flexible solution for achieving low-latency, high-bandwidth communication in data center networks.
Grayjay – Follow Creators Not Platforms
In today's digital age, we have a plethora of platforms and apps to choose from when it comes to consuming content. However, not all of us enjoy every aspect of every platform. With the ability to configure our preferences, we have the power to customize our viewing experience. One of the key features that can be configured is the platform itself. Whether it's YouTube, Netflix, or Hulu, we can choose which platforms we prefer to watch. This allows us to streamline our content consumption and focus on the platforms that offer the best user experience for our interests. Furthermore, within each platform, we have the option to enable or disable plugins for specific features. If there are certain aspects of the home feed on a platform that we don't like, we can simply disable those plugins. This allows us to curate our feed and eliminate any content that is not relevant or of interest to us. Overall, the ability to configure our preferences and enable or disable plugins for specific features gives us more control over our content consumption. It allows us to tailor our viewing experience to our personal tastes and eliminates any unwanted distractions.