Patent ID: 11934427
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 4:
5. A data classification method performed by a data classification apparatus, the data classification method comprising:
generating a feature vector by using classification target data;
acquiring, from a classification estimation unit configured to estimate classification of the classification target data and including a plurality of classifiers, observation information in a classification process based on the feature vector;
generating a classification estimation process feature vector based on the observation information; and
determining, based on the classification estimation process feature vector generated in the generating and a classification result output from the classification estimation unit to which the feature vector is input, whether the classification result is correct,
wherein generating the feature vector comprises generating the feature vector from (i) the classification target data and (ii) external information corresponding to the classification target data, by applying Onehot encoding and a term frequency-inverse document frequency (TF-IDF).