News & Products for the week of May 4th 2026 Model railroad operators and builders can get the latest information about locomotives, freight cars, passenger cars, tools, track, and more by reading ...

Abstract: Capacity-achieving polar codes have gained significant attention in recent years. In general, polar codes can be decoded by either successive cancellation (SC) or the belief propagation (BP) ...

For many years Hobbyshop Window was a popular department in the pages of Model Railroader magazine. We’re excited to bring it back as a recurring feature on Trains.com. Here’s a recap of some of the ...

🔥 Reproduce SAM. SAM training is a sub-task of ours. We have released the training code to reproduce SAM training. 🔥 Beyond SAM. Our newly proposed model offers the following attributes from ...

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Abstract: Polar codes provably achieve the symmetric capacity of a memoryless channel while having an explicit construction. The adoption of polar codes however, has been hampered by the low ...