{"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":266,"pdf_page":281,"physical_index":281,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"868381e5c47212a9871743e9d3116c50c280353a34265432da906fe1b2d29e95"},"chapter":"内容简介","content":"有了能够自动逐层提取特征的深度学习的加入，机器学处理问题的视野一下子就拓宽了很多，那么辛顿到底是如何做到的呢？笔者举一个具体实例来说明。\n\n一般来说，机器学习算法倾向于对输入样本的无关变化不敏感，譬如，处理图像识别这类问题时图片中物体的位置、方向或者物体上的装饰图案，处理语音识别问题时声音的音调或者口音，这些都属于与结果无关的变化，不应该影响识别任务的结果。但与之相对的是，有一些识别场景又需要对某些细微差异特别敏感，譬如图 7-13 那样，要分辨一匹白色的雪狼和一种长得很像狼的被称作萨摩耶的狗，两只萨摩耶在不同的环境里摆着不同姿势的照片，从像素级别来说可能会非常不一样，然而在类似背景下摆着同样姿势的一只雪狼和一只萨摩耶的照片，从像素级别来说又很可能非常相像。人类确实不难将雪狼和萨摩耶分辨出来，但无法解释清楚两者在像素级别的区分特征是怎样的。\n\n266\n\n第三部分 第三波高潮","previous_page":265,"next_page":267}