In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.

In mathematics a loss function or cost function is a mathematical function that maps an event , or the values of one or more variables onto a real number .
In mathematical optimization and decision theory , a loss function or cost function is a function that maps an event or values of one or more variables onto a real number intuitively representing some " cost " associated with the event .

The Doge 's Palace is a gothic palace in Venice , northern Italy .
The Doge 's Palace ( ; ) is a palace built in Venetian Gothic style , and one of the main landmarks of the city of Venice in northern Italy .

Queen 's University is a public university in Kingston , Ontario , Canada .

Queen 's University at Kingston ( commonly shortened to Queen 's University or Queen 's ) is a public research university in Kingston , Ontario , Canada .