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

Claim 0:
1. A data classification apparatus, comprising:
a data transformation unit, implemented using one or more computing devices, configured to generate a feature vector by using classification target data;
a classification estimation process observation unit, implemented using one or more computing devices, configured to:
acquire, 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, and
generate a classification estimation process feature vector based on the observation information; and

an error determination unit, implemented using one or more computing devices, configured to determine, in accordance with (i) an input of the classification estimation process feature vector generated by the classification estimation process observation unit and (ii) a classification result output from the classification estimation unit to which the feature vector is input, whether the classification result is correct,
wherein the data transformation unit is configured to generate 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).