如果您在 Google 上输入“Boyce Avenue”,它会显示他们即将举办的活动的丰富片段,我假设这些活动正在使用 活动信息。但是,如果您在 Google 的 丰富代码片段工具,什么也没有显示。为什么会出现这种情况?
If you type in "Boyce Avenue" on Google, it shows a rich snippet of their upcoming events which I'm assuming is using Event Information. However, if you type in "boyceavenue.com/tour.html" in Google's rich snippet tool, nothing shows up. Why does this happen?
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我已经在您的其他问题中的此处回答了这个问题。
I have answered this here in your other question.
谷歌和其他搜索引擎正在使用各种数据源来生成丰富的摘要和类似的功能。从页面爬取的丰富元数据,无论是 RDFa、微数据还是微格式,都只是一个(但很重要)来源。
谷歌似乎与(通常是大型)网站签订了双边协议,以直接使用其结构化数据。这就是为什么您可能会在 HTML 中没有数据标记的页面上看到丰富的代码片段。
Google Fusion Tables (http://www.google.com/fusiontables/Home/) 也可能成为向 Google 公开结构化数据的技术。
但是,一般来说,使用 schema.org 或 http://purl.org/goodrelations/ (用于电子商务) RDFa 或微数据语法中的标记在我看来是新站点的最佳选择,
。
href="http://wiki.goodrelations-vocabulary.org/GoodRelations_for_Semantic_SEO" rel =
Google and other search engines are using various data sources for generating Rich Snippets and similar functions. Rich meta-data crawled from the pages, be it RDFa, microdata, or microformats, is only ONE (yet important) source.
Google seems to have bilateral agreements with -- typically large -- sites for consuming their structured data directly. This why you may see rich snippets on pages that have no data markup in the HTML.
Google Fusion Tables (http://www.google.com/fusiontables/Home/) may also become a technique for exposing structured data to Google.
However, in general, using schema.org or http://purl.org/goodrelations/ (for ecommerce) markup in RDFa or microdata syntax is IMO the best option for new sites,
Best wishes
Martin Hepp