Many physical platforms, including photons, ions, atoms, solid state and superconducting devices, and nuclear magnetic resonance 1, are being explored with the view of constructing a quantum computer.

A generalized distance for discrete variables which is analogous to the Mahalanobis generalized distance is presented. Comparisons are made with other distance measures which are closely related and ...

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Classifying a variable as a particular type of data is important when considering how to present the data. Data can be presented in a number of ways, which depends on the type of variable and the uses ...