An embodiment of a data-read path includes a defect detector and a data-recovery circuit. The defect detector is operable to identify a defective region of a data-storage medium, and the data-recovery circuit is operable to recover data from the data-storage medium in response to the defect detector. For example, such an embodiment may allow identifying a defective region of a data-storage disk caused, e.g., by a scratch or contamination, and may allow recovering data that was written to the defective region.

Disclosed herein is an information processing apparatus, comprising: a feature extraction unit configured to extract features from a sample of a first class and a sample of a second class contained in a source domain and a sample of the first class contained in a target domain, respectively; a pseudo-sample generation unit configured to generate pseudo-samples of the second class in the target domain based on a distribution of samples of the first class contained in the target domain in a feature space of the features extracted by the feature extraction unit; and a data transformation unit configured to perform data transformation in the feature space by machine learning such that a distribution of samples of the first class and samples of the second class contained in the source domain approximates a distribution of samples of the first class and the pseudo-samples of the second class in the target domain.

Disclosed herein is an information processing apparatus, comprising: a feature extraction unit configured to extract features from a sample of a first class and a sample of a second class contained in a source domain and a sample of the first class contained in a target domain, respectively; a pseudo-sample generation unit configured to generate pseudo-samples of the second class in the target domain based on a distribution of samples of the first class contained in the target domain in a feature space of the features extracted by the feature extraction unit; and a data transformation unit configured to perform data transformation in the feature space by machine learning such that a distribution of samples of the first class and samples of the second class contained in the source domain approximates a distribution of samples of the first class and the pseudo-samples of the second class in the target domain.