Apple has quietly acquired Ottocat, reports TechCrunch, a little-known startup with some interesting search tech. The deal went down a few years ago—sometime in 2013—but its impact is still being felt today. The site believes the company's tech is behind the App Store's fairly new 'Explore' section.
There's little evidence of the acquisition, except for a patent granted to Apple that lists Ottocat co-founder Edwin Cooper as an inventor. The patent is titled "System and Method for Divisive Textual Clustering by Label Selection Using Variant-Weighted TFIDF," and clearly incorporates Ottocat's tech.