Search AI news

Sebastian Raschka has released an eight-video course titled “Building a Reasoning Model from Scratch.”

On October 24, 2026, Sebastian Raschka published an eight-part, over-11-hour hands-on video course on Python and PyTorch in Ahead of AI magazine (magazine.sebastianraschka.com), systematically covering the evaluation of inference models, scaling during inference, reinforcement learning (RLVR), and knowledge distillation, with all methods implemented using the pre-trained Qwen3-0.6B model.

Why it matters：This course is the author’s advanced technical educational offering, following “Building Large Language Models from Scratch.” It focuses on the core evolutionary direction of today’s mainstream LLMs—enhancing inference capabilities—covering the entire technical pipeline from setting up the foundational environment to GRPO reinforcement learning and self‑distillation. The author explicitly states that all implementations are “hand‑crafted from scratch,” fully reproducible, and highly instructive with significant engineering reference value.

Amazon SageMaker AI has launched a Multi-Step Reinforcement Learning (MTRL) framework, supporting end-to-end training of agents to accomplish multi-step tasks.

AWS has launched the Multi-Turn Reinforcement Learning (MTRL) feature, enabling users to train large‑model agents on SageMaker AI using full task trajectories and final outcome feedback, without requiring step‑level annotations. A end-to-end demonstration is provided using Wordle as an example, covering AgentCore deployment, data preparation, GRPO training, reward design, and cost analysis.

OlmoEarth v1.3 Released: A High-Performance Open-Source Satellite Embedding Model for the Global Surface

The Allen Institute for AI has released OlmoEarth v1.3, offering planet-wide satellite embedding vectors at 10-meter resolution in both 64-dimensional and 128-dimensional formats, along with the interactive exploration tool Embeddings Explorer. It supports zero-code change detection, similar-region retrieval, and lightweight classification modeling.

A 31-year-old unsolved problem in mathematics, the KLS conjecture, has been proven: a fundamental breakthrough has been achieved in high-dimensional geometry and the theory of randomized algorithms.

On October 4, 2026, Zhang Xinzhi, a researcher at Microsoft Research, together with his collaborators, completed a rigorous proof of the Kannan–Lovász–Simonovits (KLS) conjecture, thereby resolving a long-standing central problem that had remained open since its formulation in 1995. This achievement establishes a dimension-independent constant bound for the “plane‑cut bottleneck” in high-dimensional log-concave distributions, providing an unconditional theoretical foundation for random sampling, convex optimization, and theoretical computer science.

Google launches zero-trust, aggregated private analytics technology, integrating cryptography with a trusted execution environment.

Google’s research team has unveiled a new private analytics solution that leverages an innovative single-round lattice-based cryptographic aggregation protocol, working in tandem with a Trusted Execution Environment (TEE), to enable data aggregation without relying on any single trusted entity. This approach ensures that user data remains securely stored on the device while delivering group-level anonymized insights.