Table 1 Overview of symbols used in the description of RASTER and S-RASTER
From: S-RASTER: contraction clustering for evolving data streams
Symbol | Meaning |
|---|---|
\(\xi\) | Precision for projection operation |
\(\tau\) | Threshold number of points to determine if a tile is significant |
\(\delta\) | Distance metric for cluster definition |
\(\mu\) | Minimum cluster size in terms of the number of significant tiles |
\(\pi\) | Projection operator |
\(\alpha\) | Accumulation operator |
\(\kappa\) | Clustering operator |