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The 1978 Whippoorwill tornado, also known as the Whippoorwill Disaster was a tornado that struck Osage County, Kansas on June 17, 1978. The tornado, which was on the ground for 8 miles (13 km), struck a tourist boat called the Whippoorwill, causing it to capsize and drowning 16 out of the 58 passengers and crew. [2]
Precision and recall. In statistical analysis of binary classification and information retrieval systems, the F-score or F-measure is a measure of predictive performance. It is calculated from the precision and recall of the test, where the precision is the number of true positive results divided by the number of all samples predicted to be positive, including those not identified correctly ...
Channel 4 F1, commonly abbreviated to C4F1, is a British television programme that covers Formula One motor racing. It has been aired by the British broadcaster Channel 4 since 2016. From 2016 to 2018 half of the season's practice, qualifying sessions and races were shown live, with the other half covered with extended qualifying and race ...
On the negative side, 1.e4 places a pawn on an undefended square and weakens the squares d4 and f4. If Black keeps the symmetry by replying 1...e5, the result is an Open Game ( Hooper & Whyld 1996 :279) ( Watson 2006 :87–90).
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).
The English Opening is a chess opening that begins with the move: . 1. c4. A flank opening, it is the fourth most popular [1] [2] and, according to various databases, one of the four most successful of White's twenty possible first moves.