{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"cf76bc49-7e9b-4f42-bee8-3050a9fb9feb","title":"智慧的疆界 从图灵机到人工智能","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787111778004","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"cf76bc49-7e9b-4f42-bee8-3050a9fb9feb","id":"cf76bc49-7e9b-4f42-bee8-3050a9fb9feb","uuid":"cf76bc49-7e9b-4f42-bee8-3050a9fb9feb","title":"智慧的疆界 从图灵机到人工智能","normalized_title":"智慧的疆界从图灵机到人工智能","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787111778004","isbns":["9787111778004","9787111695714"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":456,"navigation_url":"https://workshop.closeclaw.top/ai/book/cf76bc49-7e9b-4f42-bee8-3050a9fb9feb","title_url":"https://workshop.closeclaw.top/ai/title/%E6%99%BA%E6%85%A7%E7%9A%84%E7%96%86%E7%95%8C%20%E4%BB%8E%E5%9B%BE%E7%81%B5%E6%9C%BA%E5%88%B0%E4%BA%BA%E5%B7%A5%E6%99%BA%E8%83%BD","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/cf76bc49-7e9b-4f42-bee8-3050a9fb9feb/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/cf76bc49-7e9b-4f42-bee8-3050a9fb9feb/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/cf76bc49-7e9b-4f42-bee8-3050a9fb9feb","page_url":"https://workshop.closeclaw.top/api/ai/books/cf76bc49-7e9b-4f42-bee8-3050a9fb9feb/page","search_url":"https://workshop.closeclaw.top/api/ai/books/cf76bc49-7e9b-4f42-bee8-3050a9fb9feb/search"},"page":{"printed_page":261,"pdf_page":276,"physical_index":276,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"c15a179f582c5e0cb2c8441270a96abbdef2ac7bad88cea9c3b9cf2d7a294e08"},"chapter":"内容简介","content":"那“深度学习”里的“深度”是不是就表示存在多个层次，从基本的特征逐层抽象出高级的特征呢？ 确实可以如此理解，深度学习的本质，就是一种逐层自动进行特征提取的机器学习方法，如图 7-11 所示，这是深度学习下计算机从图片中识别人的典型过程。\n\n深度学习还有另外一个不为人知但其实更贴切的名字，叫作“无监督特征学习”（Unsupervised Feature Learning）：“无监督”的意思是不需要人工参与特征的选取过程，这一点才是深度学习的最大特点，至于使用蕴含多少隐层的神经网络，甚至是否通过深度神经网络去实现，都是可以商量的，这些都只是工具和操作过程罢了。\n\n第 7 章 深度学习时代\n\n261","previous_page":260,"next_page":262}