Selecting a random sample from a set is simple. But what about selecting a fair random sample from a set of unknown or indeterminate size? That’s where reservoir sampling comes in, and [Sam Rose] has ...

There is some overlap -- but they're fundamentally different. Java instrumentation will track each and every instance of a given metric. This can create performance issues. Java sampling involves ...

Retail brands want to grow their customer base and revenues; stores want to drive footfall and increase loyalty. Striking the right balance that benefits both parties — and of course consumers — takes ...

Stephen John Haslett is a member of the NZ Ministry of Health Covid-19 Expert Advisory Network. As a member of the Te Punaha Matatini research collaboration Richard Arnold receives funding from the ...

At Pew Research Center, we regularly field questions from readers about the methodology behind our polls, including the occasional inquiry from someone who wants to be polled but hasn’t had the ...