AI比赛-推荐系统（一）-新闻推荐01：赛题理解、数据分析【天池】

柔光的暖阳◎ 2023-09-25 14:43 74阅读 0赞

## **赛题简介** ##

本次新人赛是Datawhale与天池联合发起的0基础入门系列赛事第五场 —— 零基础入门推荐系统之新闻推荐场景下的用户行为预测挑战赛。

赛题以新闻APP中的新闻推荐为背景，要求选手根据用户历史浏览点击新闻文章的数据信息预测用户未来点击行为，即用户的最后一次点击的新闻文章，测试集对最后一次点击行为进行了剔除。通过这道赛题来引导大家了解推荐系统中的一些业务背景，解决实际问题，帮助竞赛新人进行自我练习、自我提高。

为了更好的引导大家入门，还特别为本赛题定制了学习方案，其中包括推荐系统基础、通用流程和baseline方案学习三部分。通过对本方案的完整学习，可以帮助掌握推荐系统相关竞赛的基本技能。同时平台也将提供专属的视频直播学习通道，敬请关注平台通告。

新人赛的目的主要是为了更好地带动处于初学者阶段的新同学们一起玩起来，因此，我们鼓励所有选手，基于赛题发表notebook分享，内容包含但不限于**对赛题的理解、数据分析及可视化、算法模型的分析以及一些核心的思路**等内容。

## **赛制说明** ##

本次赛事分为两个阶段，分别为正式赛及长期赛。

**长期赛**

自2月5日开始，本场比赛将长期开放，报名和参赛无时间限制。  
每天每位参赛选手可提交2次；排行榜每小时更新，按照评测指标得分从高到低排序；排行榜将选择历史最优成绩进行展示；

**正式赛（11月20日 - 1月14日）**

1.  报名成功后，参赛队伍通过天池平台下载数据，本地调试算法，在线提交结果。若参赛队伍在一天内多次提交结果，新结果版本将覆盖旧版本。
2.  第一阶段（11月20日-1月13日）每天提供2次的评测机会，提交后将进行实时评测；排行榜每小时更新，按照评测指标得分从高到低排序；（排行榜将选择选手在本阶段的历史最优成绩进行排名展示，不做最终排名计算）
3.  第二阶段（1月14日19:00-22:0022:40）系统将在1月14日19:00提供测试数据，参赛队伍需要再次下载数据文件，本阶段提供2次评测机会，**提交截止时间1月14日22:0022:40**，赛程期间系统20:00和22:00进行2次评测和排名。排行榜将选择参赛队伍在本阶段的历史最优成绩进行排名展示。
4.  正式赛结束后，以榜单成绩作为比赛算法提交成绩依照，TOP15团队提交代码审核，规范详见“代码规范”文档（**所提交的代码能够在天池实验室（PAI-DSW探索者版）环境下复现最优成绩**），代码提交截止时间1月18日12:00。组委会将审核并剔除只靠人工标注而没有算法贡献或**无法通过天池实验室复现最优成绩**的队伍，获奖空缺名额后补。

赛题以预测用户未来点击新闻文章为任务，数据集报名后可见并可下载，该数据来自某新闻APP平台的用户交互数据，包括30万用户，近300万次点击，共36万多篇不同的新闻文章，同时每篇新闻文章有对应的embedding向量表示。为了保证比赛的公平性，将会从中抽取20万用户的点击日志数据作为训练集，5万用户的点击日志数据作为测试集A，5万用户的点击日志数据作为测试集B。

## 一、赛题理解 ##

### 1、数据表 ###

* **`train_click_log.csv`**：训练集用户点击日志【训练集的user\_id从0-199999】
 
 <table> 
 <tbody> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">user_id</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">click_article_id</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">click_timestamp</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">click_environment</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">click_deviceGroup</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">click_os</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">click_country</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">click_region</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">click_referrer_type</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">0</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">30760</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508211672520&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">25</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">0</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">157507</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508211702520&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">25</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">289197</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508211316889&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">25</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">6</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">63746</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508211346889&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">25</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">6</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">2</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">36162</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508211438695&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">3</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">20</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">25</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">2</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">168401</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508211468695&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">3</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">20</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">25</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">3</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">50644</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508211359672&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">3</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">2</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">25</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">3</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">36162</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508211389672&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">3</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">2</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">25</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">...</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">199999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">161191</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507665351186&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">199999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">42223</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507665381186&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">199999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">70214</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507721405411&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">199999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">156843</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507721435411&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">199999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">159019</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508176837088&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">199999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">218355</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1508176867088&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 </tbody> 
 </table>
 * **`testA_click_log.csv`**：测试集用户点击日志【测试集的user\_id从200000\-249999】
 
 <table> 
 <tbody> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">user_id</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">click_article_id</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">click_timestamp</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">click_environment</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">click_deviceGroup</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">click_os</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">click_country</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">click_region</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">click_referrer_type</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">200000</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">195839</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507030363999&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">200000</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">191971</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507030393999&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">200000</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">194300</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507651461280&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">1</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">200001</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">175040</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507029536442&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">3</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">2</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">18</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">7</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">...</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">249999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">214206</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507570893755&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">249999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">31836</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507570923755&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">249999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">336221</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507632393670&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">249999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">352983</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507632423670&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">249999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">235870</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507645704149&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">249999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">254899</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507645734149&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:44.5pt;">249999</td> 
 <td style="text-align:center;vertical-align:middle;width:84.5pt;">156843</td> 
 <td style="text-align:center;vertical-align:middle;width:94.5pt;">1507720796815&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:105pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:104.5pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:46.5pt;">17</td> 
 <td style="text-align:center;vertical-align:middle;width:76pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:70pt;">13</td> 
 <td style="text-align:center;vertical-align:middle;width:106pt;">2</td> 
 </tr> 
 </tbody> 
 </table>
 * **`articles.csv`**：新闻文章信息数据表【article\_id从0\-364046】
 
 <table style="width:378.02pt;"> 
 <tbody> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">article_id</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">category_id</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">created_at_ts</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">words_count</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">0</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">0</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1513144419000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">168</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1405341936000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">189</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">2</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1408667706000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">250</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">3</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1408468313000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">230</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">4</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1407071171000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">162</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">5</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">1</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1407413929000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">196</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">...</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">...</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">364041</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">460</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1431327164000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">141</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">364042</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">460</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1434034118000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">144</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">364043</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">460</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1434148472000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">463</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">364044</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">460</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1457974279000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">177</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">364045</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">460</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1515964737000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">126</td> 
 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">364046</td> 
 <td style="text-align:center;vertical-align:middle;width:88.55pt;">460</td> 
 <td style="text-align:center;vertical-align:middle;width:119.55pt;">1505811330000&nbsp;</td> 
 <td style="text-align:center;vertical-align:middle;width:95.55pt;">479</td> 
 </tr> 
 </tbody> 
 </table>
 * **`articles_emb.csv`**：新闻文章embedding向量表示
 
 <table> 
 <tbody> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">article_id</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_0</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_1</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_2</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_3</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_4</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_5</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_6</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_7</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_8</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_9</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_10</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_11</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_12</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_13</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_14</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_15</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_16</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_17</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_18</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_19</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_20</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_21</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_22</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_23</td> 
 <td style="text-align:center;vertical-align:middle;width:83.55pt;">emb_24</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_25</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_26</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_27</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_28</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_29</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_30</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_31</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_32</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_33</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_34</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_35</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_36</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_37</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_38</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_39</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_40</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_41</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_42</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_43</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_44</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_45</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_46</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_47</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_48</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_49</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_50</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_51</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_52</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_53</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_54</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_55</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_56</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_57</td> 
 <td style="text-align:center;vertical-align:middle;width:83.55pt;">emb_58</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_59</td> 
 <td style="text-align:center;vertical-align:middle;width:83.55pt;">emb_60</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_61</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_62</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_63</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_64</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_65</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_66</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_67</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_68</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_69</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_70</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_71</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_72</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_73</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_74</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_75</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_76</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_77</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_78</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_79</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_80</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_81</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_82</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_83</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_84</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_85</td> 
 <td style="text-align:center;vertical-align:middle;width:83.55pt;">emb_86</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_87</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_88</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_89</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_90</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_91</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_92</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_93</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_94</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_95</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_96</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_97</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_98</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_99</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_100</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_101</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_102</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_103</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_104</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_105</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_106</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_107</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_108</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_109</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_110</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_111</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_112</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_113</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_114</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_115</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_116</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_117</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_118</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_119</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_120</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_121</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_122</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_123</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_124</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_125</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_126</td> 
 <td style="text-align:center;vertical-align:middle;width:83.55pt;">emb_127</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_128</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_129</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_130</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_131</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_132</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_133</td> 
 <td style="text-align:center;vertical-align:middle;width:83.55pt;">emb_134</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_135</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_136</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_137</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_138</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_139</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_140</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_141</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">emb_142</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_143</td> 
 <td style="text-align:center;vertical-align:middle;width:89.55pt;">emb_144</td> 
 <td style="text-align:center;vertical-align:middle;width:93.55pt;">emb_145</td> 
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 </tr> 
 <tr> 
 <td style="text-align:center;vertical-align:middle;width:74.55pt;">1</td> 
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 <td style="text-align:center;vertical-align:middle;width:87.55pt;">-0.974058</td> 
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 <td style="text-align:center;vertical-align:middle;width:93.55pt;">-0.8979958</td> 
 <td style="text-align:center;vertical-align:middle;width:87.55pt;">-0.35974663</td> 
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 <td style="text-align:center;vertical-align:middle;width:93.55pt;">-0.01117</td> 
 </tr> 
 </tbody> 
 </table>