Patent ID: 8655887

Claim:
A method comprising the following computer-executable acts, the method executed by a processor of a computing device, the method comprising: receiving a plurality of time-series signals of a first signal type, each time-series signal in the plurality of time-series signals of the first signal type being a compression of a respective raw time-series signal from amongst a plurality of raw time-series signals, the first signal type representing respective low frequency portions of the plurality of raw time-series signals or respective high frequency portions of the plurality of raw time-series signals; generating respective identifiers for each of the plurality of time-series signals of the first signal type; selecting a representative time-series signal for the plurality of time-series signals of the first signal type from amongst the plurality of time-series signals; computing ratio signals for respective time-series signals in the plurality of time-series signals relative to the representative time-series signal; and generating a computer-readable index in a data repository that indexes the ratio signals by the respective identifiers, wherein a time-series signal identified in the computer-readable index is reconstructable based at least in part upon the representative time-series signal and the ratio signal for the time-series signal.