{"resolved":true,"match_type":"uuid","source_type":"original_book","book_id":"cd4f7678-cd9b-4971-bde0-e9ad46a6cc71","title":"人工智能与大数据技术导论","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787302517986","requested_by":"printed_page","book":{"source_type":"original_book","book_id":"cd4f7678-cd9b-4971-bde0-e9ad46a6cc71","id":"cd4f7678-cd9b-4971-bde0-e9ad46a6cc71","uuid":"cd4f7678-cd9b-4971-bde0-e9ad46a6cc71","title":"人工智能与大数据技术导论","normalized_title":"人工智能与大数据技术导论","author":null,"edition":null,"publisher":null,"year":null,"isbn":"9787302517986","isbns":["9787302517986"],"parsed":true,"ai_readable":true,"document_type":"book","page_count":490,"navigation_url":"https://workshop.closeclaw.top/ai/book/cd4f7678-cd9b-4971-bde0-e9ad46a6cc71","title_url":"https://workshop.closeclaw.top/ai/title/%E4%BA%BA%E5%B7%A5%E6%99%BA%E8%83%BD%E4%B8%8E%E5%A4%A7%E6%95%B0%E6%8D%AE%E6%8A%80%E6%9C%AF%E5%AF%BC%E8%AE%BA","fixed_page_url_template":"https://workshop.closeclaw.top/ai/book/cd4f7678-cd9b-4971-bde0-e9ad46a6cc71/page/{printed_page}","path_api_url_template":"https://workshop.closeclaw.top/api/ai/book/cd4f7678-cd9b-4971-bde0-e9ad46a6cc71/page/{printed_page}","read_url":"https://workshop.closeclaw.top/api/ai/read/cd4f7678-cd9b-4971-bde0-e9ad46a6cc71","page_url":"https://workshop.closeclaw.top/api/ai/books/cd4f7678-cd9b-4971-bde0-e9ad46a6cc71/page","search_url":"https://workshop.closeclaw.top/api/ai/books/cd4f7678-cd9b-4971-bde0-e9ad46a6cc71/search"},"page":{"printed_page":206,"pdf_page":222,"physical_index":222,"physical_index_base":0,"printed_page_status":"recognized","page_sha256":"3f0b4a7da7af45cf60962a255e224bf03471004a508681d9cbd21682a9640c7c"},"chapter":"第7章","content":"1. 载入和预处理数据\n\n首先打开Python，加载TensorFlow和其他需要的基本程序包。\n\n读取数据。我们的数据源来自Kaggle竞赛数据集，包括train和test两个CSV文件：\n\n和上一个案例一样，我们先来了解原始数据集的大致情况。通过下面几个shells可以看出：\n\n● 训练集和测试集分别包含42000和28000个样本。\n\n● 训练数据包括785个变量，其中1个为标签数据（变量名为label）。\n\n●测试数据集需要我们提交预测结果上传到比赛网站，只有784个变量，没有标签。\n\n●特征有784个，每一个代表图片中的一个像素点。图片由28\\*28个像素点排列而成。\n\n人工智能与大数据技术导论\n\n206","previous_page":205,"next_page":207}