Devtard

This plugin automatically searches posts when they are published/imported/saved and adds new taxonomy terms (tags by default) if term names or related keywords from a user-created keyword list are found.
<h4>Features</h4>
<ul>
<li>Compatible with several post import plugins (<a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ #4</a>)</li>
<li>Supports custom taxonomies and post types; for example, APT is able to categorize posts (<a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ #6</a>), add tags/categories to WooCommerce products (<a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ #7</a>)</li>
<li>Supports UTF-8 characters, non-Latin and logographic alphabets (<a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ #5</a>), including Arabic, Chinese, Cyrillic etc.</li>
<li>Bulk tagging tool (with a scheduler) for processing multiple posts</li>
<li>Import/Export tools (CSV & JSON format support)</li>
<li>Configuration groups with custom rules for selected keyword sets; wildcard (regex) support for related keywords</li>
</ul>
See <a href="https://wordpress.org/plugins/automatic-post-tagger/screenshots/" rel="ugc">Screenshots</a> and <a href="https://wordpress.org/plugins/automatic-post-tagger/faq/" rel="ugc">FAQ</a> for more information.

Automatic Post Tagger

Adds relevant taxonomy terms to posts using a keyword list provided by the user.

zhys

英文:Often publish articles and updates people loves forgets to set tags when editing an article, the article automatically add keywords tag. tag extraction based on TF-IDF implementation. Built-in <a href="http://cws.9sep.org/extract" rel="nofollow ugc">TF-IDF interface</a> does not work when you try to find an existing tag in WordPress. If found, these markers are added to the post automatically each time you save the post. 
Ps：Go to \”Settings» Writing \” Configure. TF-IDF only supports English and Chinese.Plugin work in PHP5.5+. 
Visit <a href="http://www.9sep.org/wp-auto-tags" rel="nofollow ugc">Official</a> page.
Chinese：在文章发布以及修改时自动为没有设置标签的文章添加标签，标签的提取基于TF-IDF实现。内置的<a href="http://cws.9sep.org/extract" rel="nofollow ugc">TF-IDF接口</a>无法正常工作时则通过WordPress已有标签进行匹配添加工作。 
Ps：后台通过 设置->撰写 页面对插件进行配置。TF-IDF关键词提取接口仅支持中文&英文文本 
兼容性: 除WordPress、PHP巨大更新弃用基础函数库，本插件在PHP5.5及以上版本正常工作 
欢迎访问<a href="http://www.9sep.org/wp-auto-tags" rel="nofollow ugc">WP AutoTags文章自动标签插件</a>查看详细简介，希望得到更多使用过程中遇到的问题或建议。

WP AutoTags

英文:Often publish articles and updates people loves forgets to set tags when editing an article, the article automatically add keywords tag.

Automatic Post Tagger vs WP AutoTags