{
  "fetched_at": "2026-10-19T21:52:45Z",
  "source_url": "https://www.kaggle.com/competitions/datascience-nefu-2020a/data",
  "pages": [
    {
      "name": "data-description",
      "content": "<p>This page shows up <p>This page shows up underneath the data files. Here you describe what files you have provided and the format of each. There is no single format for this page that is appropriate for all competitons, but you should strive to describe as much as you can here. A little time spent describing the data here can save a lot of time answering questions later.</p>\r\n<p>Participants should be able to answer questions like these after reading the data description: What files do I need? What should I expect the data format to be? What am I predicting? What acroynms will I encounter?</p>\r\n<h2>File descriptions</h2>\r\n<ul>\r\n<li><strong>train.csv</strong> - the training set</li>\r\n<li><strong>test.csv</strong> - the test set</li>\r\n<li><strong>sampleSubmission.csv</strong> - a sample submission file in the correct format</li>\r\n<li><strong>metaData.csv</strong> - supplemental information about the data</li>\r\n<li>etc...</li>\r\n</ul>\r\n<h2>Data fields</h2>\r\n<ul>\r\n<li><strong>customer_id</strong> - an anonymous id unique to a given customer</li>\r\n<li><strong>movie_id</strong> - the id of a movie</li>\r\n<li><strong>movie_title</strong> - the title of a movie</li>\r\n<li>etc...</li>\r\n</ul>",
      "isPublished": false,
      "hasIsPublished": false,
      "postTitle": "",
      "hasPostTitle": false,
      "mimeType": "",
      "hasMimeType": false
    },
    {
      "name": "Description",
      "content": "<p>Интернет-магазин торгует товарами 226 наименований.</p>\n<p>Вам доступны данные о продажах в течении 2016 и 2017 года.</p>\n<p>В данных 2017 года пропущены продажи ноября и декабря.</p>\n<p>Необходимо для каждого товара сделать прогноз объема продаж в ноябре 2017 года.</p>\n",
      "isPublished": false,
      "hasIsPublished": false,
      "postTitle": "",
      "hasPostTitle": false,
      "mimeType": "",
      "hasMimeType": false
    },
    {
      "name": "Evaluation",
      "content": "<p>Проверка происходит в метрике MAE:</p>\n<p>\\[ MAE = \\sum_{i=1}^N |y_i-\\hat{y}_i|\\]</p>\n<p>С точки зрения бизнеса для данной задачи метрика MSE бессмысленна.</p>\n<h2>Submission Format</h2>\n<p>Всего товаров 226 шт., каждый товар имеет номер от 0 до 225.</p>\n<p>Файл должен иметь заголовок и быть продолжен в следующем формате:</p>\n<pre>Id,Predicted<br>0,154<br>1,323<br>2,172<br>...<br>225,1<br></pre>",
      "isPublished": false,
      "hasIsPublished": false,
      "postTitle": "",
      "hasPostTitle": false,
      "mimeType": "",
      "hasMimeType": false
    },
    {
      "name": "rules",
      "content": "This is a page where you can include rules that participants must accept before joining. You may wish to include rules like:\n\n - Don't cheat!\n - Apply yourself!\n - Have fun!",
      "isPublished": false,
      "hasIsPublished": false,
      "postTitle": "",
      "hasPostTitle": false,
      "mimeType": "",
      "hasMimeType": false
    }
  ]
}