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e. An intelligence quotient ( IQ) is a total score derived from a set of standardised tests or subtests designed to assess human intelligence. [1] The abbreviation "IQ" was coined by the psychologist William Stern for the German term Intelligenzquotient, his term for a scoring method for intelligence tests at University of Breslau he advocated ...
Viète. de Moivre. Euler. Fourier. v. t. e. In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles.
Douglas MacArthur (26 January 1880 – 5 April 1964) was an American military leader who served as General of the Army for the United States, as well as a field marshal to the Philippine Army.He served with distinction in World War I, was Chief of Staff of the United States Army during the 1930s and played a prominent role in the Pacific theater during World War II.
Dwight D. Eisenhower. Dwight David Eisenhower ( / ˈaɪzənhaʊ.ər / EYE-zən-how-ər; born David Dwight Eisenhower; October 14, 1890 – March 28, 1969), nicknamed Ike, was an American military officer and statesman who served as the 34th president of the United States from 1953 to 1961. During World War II, he was Supreme Commander of the ...
- Introduction
- Definition
- Imbalanced Data
- F-Measure
- Limitations as Goals
- See Also
- External Links
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 belongin...
For classification tasks, the terms true positives, true negatives, false positives, and false negatives (see Type I and type II errors for definitions) compare the results of the classifier under test with trusted external judgments. The terms positive and negative refer to the classifier's prediction (sometimes known as the expectation), and the ...
Accuracy can be a misleading metric for imbalanced data sets. Consider a sample with 95 negative and 5 positive values. Classifying all values as negative in this case gives 0.95 accuracy score. There are many metrics that don't suffer from this problem. For example, balanced accuracy(bACC) normalizes true positive and true negative predictions by ...
A measure that combines precision and recall is the harmonic meanof precision and recall, the traditional F-measure or balanced F-score: This measure is approximately the average of the two when they are close, and is more generally the harmonic mean, which, for the case of two numbers, coincides with the square of the geometric mean divided by the...
There are other parameters and strategies for performance metric of information retrieval system, such as the area under the ROC curve (AUC) or pseudo-R-squared.
British and German wounded, Bernafay Wood, 19 July 1916. Photo by Ernest Brooks. The total number of military and civilian casualties in World War I was about 40 million: estimates range from around 15 to 22 million deaths and about 23 million wounded military personnel, ranking it among the deadliest conflicts in human history. ...
George Catlett Marshall Jr. GCB (31 December 1880 – 16 October 1959) was an American army officer and statesman. He rose through the United States Army to become Chief of Staff of the U.S. Army under Presidents Franklin D. Roosevelt and Harry S. Truman, then served as Secretary of State and Secretary of Defense under Truman.[3] Winston ...
