Apple is increasingly acquiring firms with expertise in machine learning and artificial intelligence.

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Apple has confirmed it has acquired Tuplejump, a small Indian machine learning company with operations in India as well as the United States.

Tuplejump offered software services to companies to store, process, and visualize data. It was founded in 2013 but doesn’t seem to be operational anymore. Though the confirmation of Tuplejump’s acquisition came this week, the deal may have occurred sometime in April.

Two of three Tuplejump co-founders — Rohit Rai and Satyaprakash Buddhavarapu — stopped working at the firm in April, and joined Apple in May, according to their LinkedIn profiles. The third co-founder Deepak Alur joined another company called Anaplan in April.

Here's how Tuplejump described itself, back when its website was operational, "A few years ago people realised that the volume of data that businesses generate was becoming unwieldy. A new set of technologies to handle this huge amounts of data cropped up. We were one of the early adopters of these ‘big-data’ technologies. Having helped Fortune 500 companies adopt these technologies we quickly realised how complicated they were and how much simpler they could get."

Apple may have been interested in Tuplejump's "FiloDB" open source project through which it quickly analysed bulk amount of complex data, TechCrunch adds.

This is the third machine learning or artificial intelligence company Apple has bought this year. Last month, the company confirmed that it had acquired Seattle-based company Turi, which offered "machine learning platform for developers and data scientists."

Earlier this year, it confirmed that it had acquired Emotient, a San Diego-based company, which uses artificial intelligence to detect emotion from facial expressions. In December last year, Apple confirmed that it bought machine learning company Perceptio.