Taking stock of Apple's 2016 acquisitions

Apple’s acquisition this past week of Turi, a Seattle machine learning company that has its roots in the open source GraphLab project, brings to six the number of deals Apple has made this year that have gone public. So while Apple’s $2.5 billion in R&D spending during its recently completed second quarter represented a 25% increase over the year-ago period and indicates that Apple is building plenty of futuristic technology in-house, the company continues to buy startups at rou