1. A method comprising: partially ordering, by an encoder of a processing device, a first plurality of subsequences of a target vector by arranging subsequences of the first plurality of subsequences into a plurality of ordered groups in accordance with a measure of the target vector available only to the encoder and not available to a decoder, wherein membership in an ordered group represents a variation of behavior of subsequences of the first plurality of subsequences, wherein order of groups in the plurality of ordered groups does not provide information on element by element values of the target vector itself, wherein the subsequences in each ordered group are not differentiated and are given equal priority within the ordered group, and wherein information specifying the partial ordering of the first plurality of subsequences into the plurality of ordered groups is explicitly encoded into a number of bits sent to the decoder that represents an arrangement of the first plurality of subsequences into the ordered groups, wherein the bits specify only the partial ordering and define only the subsequences in each ordered group and the order of the plurality of ordered groups, and wherein the partial ordering is fully recoverable using the information; dividing, by the encoder, the subsequences of the first plurality of subsequences into a second plurality of subsequences; creating, by the encoder, a subsequence fidelity criterion for each subsequence of the second plurality of subsequences based at least in part on the partial ordering of the first plurality of subsequences represented through the arrangement of the first plurality of subsequences into groups; and encoding, by the encoder, the second plurality of subsequences, including quantizing the second plurality of subsequences, given each of the subsequence fidelity criterions.