Patent ID: 8112386

Claim:
A rotation based transformation method, comprising: dividing, using a first computer system, a given data set into a plurality of data subsets; applying a plurality of rotation matrixes to the plurality of divided data subsets, respectively, using the first computer system, to rotate the plurality of data subsets, in order to generate a plurality of rotated data subsets; concatenating the plurality of rotated data subsets using the first computer system in order to generate a rotated data set; releasing the rotated data set using the first computer system, such that the rotated data set is used for data mining, removing relative rotation deviation between the plurality of rotation matrixes, wherein, when data subsets Ai and Aj are rotated to Y i A and Y j A by rotational angles θi and θj corresponding to the data subsets and released, the removing of the relative rotation deviation includes generating θ* using the following Equation (θ*=θi−θj (θi>θj) or θ*=360−(θj−θi) (θi<θj)), generating a rotation matrix R* using θ*, and releasing the rotation matrix R* ; and rotating the data subset Y j A using the released matrix R* in order to unify it with the data Y A i .