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The UK prefix is added to the security classification of all assets sent to foreign governments or international organisations. This prefix designates the UK as the originating country and that the British Government should be consulted before any possible disclosure. [2] National caveats follow the security classification.
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).
[1] [2] This type of information collection and job duty exists within many government agencies around the world. [3] [4] According to Ewen Montagu, John Godfrey devised this system when he was director of the Naval Intelligence Division (N.I.D.) around the time of World War II. [5]
Accuracy is also used as a statistical measure of how well a binary classification test correctly identifies or excludes a condition. That is, the accuracy is the proportion of correct predictions (both true positives and true negatives) among the total number of cases examined. [10] As such, it compares estimates of pre- and post-test probability.
Indexing and classification methods to assist with information retrieval have a long history dating back to the earliest libraries and collections however systematic evaluation of their effectiveness began in earnest in the 1950s with the rapid expansion in research production across military, government and education and the introduction of computerised catalogues.
This includes all applicants for employment in the civil service and armed forces and applies to both permanent and temporary staff and private sector employees working on government contracts, with access to government assets. The Baseline Personnel Security Standard requires the verification of the following four elements: Identity [1]: 7(a)
The relationship between sensitivity and specificity, as well as the performance of the classifier, can be visualized and studied using the Receiver Operating Characteristic (ROC) curve. In theory, sensitivity and specificity are independent in the sense that it is possible to achieve 100% in both (such as in the red/blue ball example given above).
Pages in category "Accuracy and precision" The following 12 pages are in this category, out of 12 total. ... Sensitivity and specificity; Spatial resolution;