Many scientific problems entail labeling data items with one of a given, finite set of classes based on features of the data items. For example, oncologists classify tumors as different known cancer ...

Adam Hayes, Ph.D., CFA, is a financial writer with 15+ years Wall Street experience as a derivatives trader. Besides his extensive derivative trading expertise, Adam is an expert in economics and ...

If you’re staring at a bare Christmas tree and a tight budget, you’re not alone. Surveys this year show nearly a third of people are spending less on holiday decorations, mostly to save money, and ...

The best artificial Christmas trees dazzle your home without the cleanup and maintenance required of a real tree. They also offer features no live tree can offer: the ability to re-use your tree year ...

Mr. Currell was a deputy undersecretary and senior adviser at the Department of Education from 2018 to 2021. He is a trustee of Gustavus Adolphus College in St. Peter, Minn. This week, about 200,000 ...