Anomaly detection for compression

A system for detecting a pressure induced sensor artifact (PISA) in an analyte signal, the system comprising:

• an analyte sensor system configured to generate raw analyte data for a user;
• a memory comprising executable instructions;
• a processer in data communication with the memory and configured to execute the instructions to:
• receive an analyte trace having a plurality of data samples obtained over a period of time;
• extract from the analyte trace a plurality of predetermined features reflective of a PISA in the analyte trace to produce a plurality of data points in a feature space defined by the plurality of predetermined features;
• analyze the data points in the feature space using an unsupervised anomaly detection algorithm to produce an anomaly score for each of the data points;
• identify data points that have an anomaly score that exceeds a threshold;
• and
• generate an alert indicating that a PISA is present in data samples associated with the data points that have an anomaly score that exceeds the threshold.

A computer-readable medium comprising instructions which, when executed by a processor, cause the processor to perform a method for detecting a pressure induced sensor artifact (PISA) in an analyte signal, noise reduction in analyte data, the method comprising:

• receiving an analyte trace having a plurality of data samples obtained over a period of time;
• extracting from the analyte trace a plurality of predetermined features reflective of a PISA in the analyte trace to produce a plurality of data points in a feature space defined by the plurality of predetermined features;
• analyzing the data points in the feature space using an unsupervised anomaly detection algorithm to produce an anomaly score for each of the data points;
• identifying data points that have an anomaly score that exceeds a threshold;
• and
• generating an alert indicating that a PISA is present in data samples associated with the data points that have an anomaly score that exceeds the threshold.