In physics what single word term normally represents 'rate of change of position'?
Strain rate tensor velocity gradient does not contribute to the rate of change of the deformation. The actual strain rate is therefore described by the symmetric term, which is the strain rate tensor. The symmetric term of velocity gradient (the rate-of-strain tensor) can be broken down further as the sum of a scalar times the unit tensor, that represents a gradual isotropic expansion or contraction; and a traceless symmetric tensor which represents a gradual shearing deformation, with no change in volume: That is, Here is the unit tensor, such that is 1 if and 0 if . This decomposition is independent of the
Word error rate performance accuracy at a rate below 95% is not acceptable, but this again may be syntax and/or domain specific, e.g. whether there is time pressure on users to complete the task, whether there are alternative methods of completion, and so on. The term "Single Word Error Rate" is sometimes referred to as the percentage of incorrect recognitions for each different word in the system vocabulary. The word error rate may also be referred to as the length normalized edit distance. The normalized edit distance between X and Y, "d"( X, Y ) is defined as the minimum of W( P