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Precision and recall In pattern recognition, information retrieval, object detection and classification (machine learning), precision and recall are performance metrics that apply to data retrieved from a collection, corpus or sample space.Precision (also called positive predictive value) is the fraction of relevant instances among the retrieved instances.
In medicine and statistics, sensitivity and specificity mathematically describe the accuracy of a test that reports the presence or absence of a medical condition. If individuals who have the condition are considered "positive" and those who do not are considered "negative", then sensitivity is a measure of how well a test can identify true ...
The total sum of squares (proportional to the variance of the data): The most general definition of the coefficient of determination is. In the best case, the modeled values exactly match the observed values, which results in and . A baseline model, which always predicts , will have .
Many climbing routes have a grade that reflects the technical difficulty—and in some cases the risks and commitment level—of the route. The first ascensionist can suggest a grade, but it will be amended to reflect the consensus view of subsequent ascents. While many countries with a strong tradition of climbing developed grading systems, a ...
Scottie Pippen. Scotty Maurice Pippen Sr. [3] [4] (born September 25, 1965), usually spelled Scottie Pippen, is an American former professional basketball player. He played 17 seasons in the National Basketball Association (NBA), winning six NBA championships with the Chicago Bulls. Considered one of the greatest small forwards of all time ...
Shohei Ohtani (大谷 翔平, Ōtani Shōhei, born July 5, 1994) is a Japanese professional baseball pitcher and designated hitter for the Los Angeles Dodgers of Major League Baseball (MLB). Nicknamed "Shotime", [2] he has previously played in MLB for the Los Angeles Angels and the Hokkaido Nippon-Ham Fighters of Nippon Professional Baseball (NPB).
LeBron James is the leading scorer in NBA history. Scoring leaders. The following is a list of National Basketball Association players by total career regular season points scored. Statistics accurate as of April 9, 2024. Progressive list of scoring leaders.