Nll

NLL is an acronym that can refer to several concepts in different domains. In professional sports, NLL most often denotes the National Lacrosse League, a North American professional indoor lacrosse league. The league traces its origins to 1986 as the Eagle Pro Box Lacrosse League, later renamed the Major Indoor Lacrosse League, and adopted the current name in 1998. It features teams from Canada and the United States and plays during the winter season.

In statistics, NLL stands for negative log-likelihood, the negative of the log-likelihood function used in parameter estimation under likelihood-based methods. The negative log-likelihood is commonly minimized during model fitting and serves as a central objective in many machine learning algorithms. Lower NLL values indicate a model that better explains the observed data.

Other uses of the acronym exist in specialized contexts, and the intended meaning is determined by subject matter. Clear disambiguation relies on surrounding information.