语义mediawiki属性计算 [英] semantic mediawiki property calculation

问题描述

我最近安装了MediaWiki扩展名语义MediaWiki.在此扩展中，您可以定义属性.它们就像价值的类别.如果我这样定义两个属性:

I installed the MediaWiki-extension Semantic MediaWiki recently. In this extension you can define properties. They are like categories for values. If I define two properties like this:

[[StartYear :: 2000]] [[EndYear :: 2005]]

[[StartYear::2000]] [[EndYear::2005]]

如果进行语义搜索，是否可以基于这些属性进行计算.例如:

Is it possible to make calculations based on these properties if I do a semantic search. For example:

{{## ask:[[Category:Project]] [[EndYear]]-[[StartYear]] = 5 }}

{{#ask: [[Category:Project]] [[EndYear]] - [[StartYear]] = 5 }}

获得所有为期5年的项目吗?

to get all projects with a duration of 5 years?

最好，UP

推荐答案

为此，您需要预处理每个项目页面的间隔.

For this you would need to pre-process the interval for each project page.

如果您使用的是模板，则可以使用以下代码轻松创建模板:

If you are using a template, you can easily create do it with the following code:

[[Interval::{{#expr:{{{StartYear}}} - {{{EndYear}}}}}| ]]

然后您可以通过以下方式查询它:

Then you can query it this way:

{{#ask: [[Category:Project]] [[Interval::5]]}}

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