Statistics filter: How can I categorize time series curves into pattern categories? [more inside]
Is anyone aware of an old paper filing system in which the individual records were punched with holes representing categories and/or keywords? To filter the records, you pushed a wooden rod through the holes and lifted out the records. I can't find this, no matter how advanced my Google-fu.
Please tell me everything I need to know about the GMail dot feature (placing - or not placing - a dot in the username of a gmail email address). I don't understand it, how to use it, what it does and how to take advantage of it. As an email receiver and sender. Also, what problems are created with this? Is there a way I can use it to categorize email, both received and sent? [more inside]
LibraryFilter: How do I look up a book's "category"? [more inside]
Ontology Filter: Give me a name for a category of things that I'm using in a system. [more inside]
Photo categorization software with user defined tags. [more inside]