Patent ID: 11868852
Assignee: AMAZON TECHNOLOGIES, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 15:
16. A system, comprising:
at least one processor; and
memory including instructions that, when executed by the at least one processor, cause the system to:
process a set of data objects using a trained classifier to generate respective risk scores for the set of data objects, the classifier trained using a selected subset of features contained within the set of data objects
generate a representation of the set of data objects, wherein respective positions of the data objects are based at least in part upon contributions of the features of the data objects, the respective positions of the data objects being at least partially clustered by the contributions;
determine a clustering of at least a subset of erroneously scored data objects in the representation, the subset being identifiable using one or more visual indicators for respective data objects of the subset in the representation, the subset including at least a threshold percentage of total data nodes clustered in the representation;
determine a new subset of features for training the classifier based at least in part upon the contributions of the features of the erroneously scored data objects clustered in the representation;
retrain the classifier using the new subset of features; and
provide the classifier for processing user data objects to determine at least respective risk scores for the user data objects.