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  2. Registration, Evaluation, Authorisation and Restriction of ...

    en.wikipedia.org/wiki/Registration,_Evaluation...

    C294, 25.11.2005, pp. 38–44. Registration, Evaluation, Authorisation and Restriction of Chemicals ( REACH) is a European Union regulation dating from 18 December 2006. [1] REACH addresses the production and use of chemical substances, and their potential impacts on both human health and the environment. Its 849 pages took seven years to pass ...

  3. Global Reach - Wikipedia

    en.wikipedia.org/wiki/Global_Reach

    A means of business growth [ edit] Global Reach acts as a medium through which firms can expand beyond the region of their setup. The concept has meant that smaller firms are able to use the internet to reach markets that would only have been available to the larger firms before. The modern ability and desire of companies to grow globally means ...

  4. Numerical differentiation - Wikipedia

    en.wikipedia.org/wiki/Numerical_differentiation

    For computer calculations the problems are exacerbated because, although x necessarily holds a representable floating-point number in some precision (32 or 64-bit, etc.), x + h almost certainly will not be exactly representable in that precision. This means that x + h will be changed (by rounding or truncation) to a nearby machine-representable ...

  5. Precision and recall - Wikipedia

    en.wikipedia.org/wiki/Precision_and_recall

    Introduction. 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).

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  8. McDonnell Douglas F-15 Eagle - Wikipedia

    en.wikipedia.org/wiki/McDonnell_Douglas_F-15_Eagle

    The McDonnell Douglas F-15 Eagle is an American twin-engine, all-weather tactical fighter aircraft designed by McDonnell Douglas (now part of Boeing ). Following reviews of proposals, the United States Air Force (USAF) selected McDonnell Douglas's design in 1969 to meet the service's need for a dedicated air superiority fighter.

  9. Accuracy and precision - Wikipedia

    en.wikipedia.org/wiki/Accuracy_and_precision

    Common technical definition. Accuracy is the proximity of measurement results to the accepted value; precision is the degree to which repeated (or reproducible) measurements under unchanged conditions show the same results. In the fields of science and engineering, the accuracy of a measurement system is the degree of closeness of measurements ...

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