4 ms·
> It can still be pointing to the raw data. Yep. Each SAX word should be mapped to the list of seriesid:timestamp pairs. This list is often referred as posting
by chaotic-good 11y ago
> It can still be pointing to the raw data.
Yep. Each SAX word should be mapped to the list of seriesid:timestamp pairs. This list is often referred as postings list in information retrieval. The resulting data-structure is an inverted index. SAX and iSAX papers describes inverted index variant (really bad one) based on folder structure but one can use convenient IR tools for this.
- cbsmith 11y agoiSAX2 yields a much better inverted index style model. The thing is, particularly with time series data, a lot of times it is sufficient to at least start with the summary data in the index.