I want to build a website for news aggregation. I know we can use some wordpress plugins to parse the RSS feeds of other news websites. But I want to group them by news topic/area within a tab automatically. For example
->International Affairs (Tab)
—>UK (First Level Group)
----->Brexit (Topic Level Group)
Any idea how this can be achieved. I am not looking for wordpress based solution as I want to add some machine learning algorithm on top of them.