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TF-IDF代表文档频次逆文档频率，用于衡量页面上给定关键字的重要性。与关键词密度不同，它不仅仅看关键词在页面上的使用次数，而且分析了更多的页面，并尝试确定该关键字的重要性。
例如，在汽车维修中，“轮胎维修”这个词可能比“涡轮增压发动机维修”更重要——主要是因为每个汽车都有轮胎，只有少数汽车有涡轮发动机。因此，“轮胎维修”这个词在谈论汽车维修的更大范围的页面上使用。效率更高。
这正是WebSite Audit中的TF-IDF报告能够捕捉到的内容！
通过查看竞争对手的关键词使用统计数据，TF-IDF公式将向您展示：
何时使用TF-IDF分析？
为什么要使用TF-IDF报告？
计算内容优化因素。还分析您的页面在目标关键词上的优化程度。
发现您排名靠前的竞争对手正在使用的关键词和短语
找到使用较少或使用更多建议的单词和短语，以查看如何调整您的副本以提高相关性
TF-IDF报告的工作原理是什么？
TF-IDF报告根据特定的公式工作，在文档d中的术语t，术语t在文档d中的权重Wt,d由以下公式给出：Wt,d = TFt,d log (N/DFt)
最后的思考
HulkApps为Shopify提供全能TF-IDF报告服务，帮助像您一样的店主提取文件/网站中最具描述性的术语...
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In order to keep everything on track we have developed our own communication tool. It is great to have all the project communication including attachments and invoices in one place.
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We need to recharge our batteries but in the case of an urgent project, we make exceptions and overcome the craziest deadlines.
We offer 2-price options depending on completion time. While placing an order you will see the approximate delivery date. We may adjust the delivery date depending on project complexity. We start working only after the client's approval of delivery date and price.
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Rising to serve you better, we are delighted to announce that PlanetX has been acquired by HulkApps, a Chicago-based leading Shopify agency. The combination of HulkApps Shopify services and PlanetX's strong capabilities in the eCommerce industry will lead to continued growth for both companies.
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