interesting collection of nasa code projects.
https://code.nasa.gov/
example:
SequenceMiner-Anomaly Detection in Large Sets of High-Dimensional Symbol Sequences
NASA Open Source 3.0NASA Open Source 3.0
https://ti.arc.nasa.gov/opensource/projects/sequenceminer/
"SequenceMiner was developed to address the problem of detecting and
describing anomalies in large sets of high-dimensional symbol sequences.
The technology performs unsupervised clustering (grouping) of sequences
using the normalized longest common subsequence (LCS) as a similarity
measure, followed by a detailed analysis of outliers to detect anomalies.
SequenceMiner utilizes a new hybrid algorithm for computing the LCS that
has been shown to outperform existing algorithms by a factor of five."