https://blog.cdnsre.top/tags/open-source/ Recent content in Open-Source on Wissen Xue Blog Hugo en-us Tue, 07 Jul 2026 14:25:04 +0800 https://blog.cdnsre.top/posts/open-source-llm/ Tue, 07 Jul 2026 14:25:04 +0800 https://blog.cdnsre.top/posts/open-source-llm/ <p><em>A detailed summary for learning and teaching LLM</em></p> <hr> <h1 id="1-what-do-we-actually-download-from-hugging-face">1. What do we actually download from Hugging Face?</h1> <p>One of the biggest misconceptions is that downloading a Large Language Model (LLM) means downloading its training data.</p> <p><strong>This is NOT true.</strong></p> <p>When you download an open-source model from Hugging Face, you are primarily downloading <strong>a trained neural network</strong>, not the data that trained it.</p> <p>Think of it like this:</p> <ul> <li>Training data = millions or billions of books the student has read</li> <li>Model weights = everything the student has learned</li> <li>Source code = the student&rsquo;s brain architecture</li> <li>Tokenizer = the student&rsquo;s dictionary</li> </ul> <p>The books are <strong>not</strong> included.</p>