Appreciate this is waaayy after the fact, but in case anyone else is looking, I thought I’d just document explicitly how to get this effect (that is to say, only see articles with a particular characteristic from one of your feeds). Samuel does hint at it above, but this is the full deal:
- When reading an article that you do like, click “Train”, identify the characteristic you’re after (e.g. “title:my favourite thing”), and thumbs-up that. This should now mean that you have a few green articles of interested highlighted in the feed, but you might still have hundreds of grey normal articles that you really don’t want to see.
- Now, go to your feed index, and Train on the feed. At the bottom of the list of author etc. tags it offers you, there’s a global training button for the entire feed. If you thumbs-down the whole feed this way, it gets rid of everything else in the feed, leaving you only the stuff you’re interested in.