In the previous issue’s article about the two IMS Fellows who were awarded MacArthur Fellowships, we originally stated incorrectly that Lester Mackey’s team had won the 2009 Netflix Prize. In fact, Mackey was part of the team that came second. He explained, “We tied the winning team, but the tie breaker was time of submission, and we submitted 20 minutes later!”

One of the authors of the obituary of Ehsanes Saleh that appeared in the previous issue is Dr. Mina Norouzirad, whose affiliation was wrongly given as University of Lisbon, Portugal. Dr Norouzirad works at the Center for Mathematics and Applications, Universidade Nova de Lisboa, Portugal.

We apologize for any confusion arising from these errors.