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环境:Python3.6
全新的微博爬虫三件套已发布,位于
https://github.com/stay-leave/weibo-crawler
基于网页端,字段和数据量更上一个台阶。
仅做学习交流使用!不收费,若发现搬运倒卖的,请私信我处理。
包含微博爬虫、LDA主题分析和情感分析三个部分。
新增话题热度、话题相似度部分。
新增地图可视化部分,数据由团队自行搜集。
1.微博爬虫
实现微博评论爬取和微博用户信息爬取,一天大概十万条。
![image](https://user-images.githubusercontent.com/58450966/147920881-f8e6f6ea-b389-417b-b13f-5d60829ecf40.png)
![image](https://user-images.githubusercontent.com/58450966/147920969-56bd4164-5599-4ecc-9918-55a42ab37b63.png)
2.LDA主题分析
实现文档主题抽取,包括数据清洗及分词、主题数的确定(主题一致性和困惑度)和最优主题模型的选择(暴力搜索)。
![image](https://user-images.githubusercontent.com/58450966/147921016-4f4bd003-4c68-4d51-82e3-eb5e14433960.png)
3.情感分析
实现评论文本的情感值计算,准确率超过97%,处于0到1之间。
![image](https://user-images.githubusercontent.com/58450966/147921147-90cd3019-a47f-496d-a783-b43d09aa1550.png)
![image](https://user-images.githubusercontent.com/58450966/147921200-db688b8e-2941-4a19-9aaa-aeabb3d9bab2.png)
4.话题热度计算
实现话题的热度的计算,同一时间内总和为1.
![image](https://user-images.githubusercontent.com/58450966/147921229-08e7ffea-c953-4efa-b52e-cdff40c615cc.png)
5.主题相似度计算
实现两个相邻时间片的话题的演化探测,以判断主题演化情况。
![image](https://user-images.githubusercontent.com/58450966/147921312-0917b2bf-d1ff-4076-933f-cb126f0fef16.png)
6.地图绘制
实现分省市情感均值、评论总数、新增确诊人数的地图可视化。
![{%F0EED5 @H@P5 1UKV~R4](https://user-images.githubusercontent.com/58450966/156149916-d1334422-3df7-416c-b9d5-317fd81323e4.png)
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