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In a classification task, the precision for a class is the number of true positives (i.e. the number of items correctly labelled as belonging to the positive class) divided by the total number of elements labelled as belonging to the positive class (i.e. the sum of true positives and false positives, which are items incorrectly labelled as belonging to the class).
Similarity learning is closely related to distance metric learning.Metric learning is the task of learning a distance function over objects. A metric or distance function has to obey four axioms: non-negativity, identity of indiscernibles, symmetry and subadditivity (or the triangle inequality).
The following is a list of the 67 counties of the U.S. state of Pennsylvania.The city of Philadelphia is coterminous with Philadelphia County, the municipalities having been consolidated in 1854, and all remaining county government functions having been merged into the city after a 1951 referendum.
Artificial intelligence may be the new frontier in schooling as teacher-less academies seek approval to set up shop in Pennsylvania, Arizona and elsewhere.
This is an accepted version of this page This is the latest accepted revision, reviewed on 24 February 2025. U.S. state This article is about the U.S. state. For other uses, see Pennsylvania (disambiguation). "Penn." redirects here. For other uses, see Penn. State in the United States Pennsylvania Pennsilfaani (Pennsylvania Dutch) State Commonwealth of Pennsylvania Flag Seal Nickname: The ...
Japanese automaker Nissan finds itself at a crossroads.Nissan was poised to participate in a megamerger with rival Honda (), and it was a huge development when the talks were revealed late last year.
The Pennsylvania System of School Assessment (PSSA) is a standardized test administered in public schools in the state of Pennsylvania.Students in grades 3-8 are assessed in English language arts skills and mathematics.
People place flowers in front of the West York Police Department after a police officer was killed responding to a shooting at UPMC Memorial Hospital in York, Pa. on Saturday, Feb. 22, 2025.