The-Dream, the R&B singer and behind-the-scenes power player, recently boasted of a $15 million payday for writing Rihanna's 2007 smash Umbrella. True? When you have a cross-over song, it just makes more and more and more money, says Tom DeSavia, a vice president at Notable Music, a 50-year-old music publisher founded by the late songwriter Cy Coleman.
Simple guide to confusion matrix terminology. A confusion matrix is a table that is often used to describe the performance of a classification model (or classifier) on a set of test data for which the true values are known.The confusion matrix itself is relatively simple to understand, but the related terminology can be confusing. wanted to create a quick reference guide for confusion matrix terminology because I couldn't find an existing resource that suited my requirements: compact in presentation, using numbers instead of arbitrary variables, and explained both in terms of formulas and sentences.
An inverse matrix is the matrix that is multiplied by the original square matrix to derive the identity matrix, which contains values of 1 on the diagonal and 0 elsewhere. This property makes it useful for solving systems of equations that include many variables.ype without quotes: =MINVERSE(A1:C3). Replace the cell reference A1 with that of the upper left corner of your matrix, and C3 with the cell reference of the lower right corner of your matrix. Hold down both the Ctrl and Shift keys; press Enter..