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The Central Weather Administration ( CWA; Chinese: 交通部中央氣象署; pinyin: Jiāotōng Bù Zhōngyāng Qìxiàng Shǔ) is the government meteorological research and forecasting institution of the Republic of China (Taiwan). In addition to meteorology, the Central Weather Administration also makes astronomical observations, reports on ...
Eurofighter Typhoon variants. The Eurofighter Typhoon is a European multinational twin-engine, supersonic, canard delta wing, multirole fighter. [3] [4] The Typhoon was designed originally as an air-superiority fighter [5] and is manufactured by a consortium of Airbus, BAE Systems and Leonardo that conducts the majority of the project through a ...
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- 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.
Hong Kong [d] is a special administrative region of the People's Republic of China. With 7.4 million residents of various nationalities [e] in a 1,104-square-kilometre (426 sq mi) territory, Hong Kong is one of the most densely populated territories in the world. Hong Kong was established as a colony of the British Empire after the Qing dynasty ...
The Solar System is the gravitationally bound system of the Sun and the objects that orbit it. It was formed 4.6 billion years ago when a dense region of a molecular cloud collapsed, forming the Sun and a protoplanetary disc.The Sun is a typical star that maintains a balanced equilibrium by the fusion of hydrogen into helium at its core, releasing this energy from its outer photosphere.
The Castle of Rocca Calascio is a mountaintop fortress or rocca in the municipality of Calascio, in the Province of L'Aquila, Abruzzo, Italy. At an elevation of around 1,460 metres (4,790 ft), the castle is the highest fortress in the Apennines. Built of stone and masonry exclusively for military purposes and intended only to accommodate troops ...
The Wieliczka Salt Mine ( Polish: Kopalnia soli Wieliczka) is a salt mine in the town of Wieliczka, near Kraków in southern Poland . From Neolithic times, sodium chloride ( table salt) was produced there from the upwelling brine. The Wieliczka salt mine, excavated from the 13th century, produced table salt continuously until 1996, [2] as one ...
