Table 1 High level notation
From: Real-time spatio-temporal event detection on geotagged social media
\(p_x\) | A social media post \(p_x\) |
\(t_x\) | Timestamp of post \(p_x\) |
\(l_x\) | Location of post \(p_x\) |
\(f_x\) | Features of post \(p_x\) |
\({\mathcal {S}}\) | A data stream of posts as a set, \({\mathcal {S}} = \{p_1, p_2, \dotsc , p_n\}\) |
\({\mathcal {W}}\) | A window (e.g. of size m), \({\mathcal {W}} = \{p_{n-m+1}, \dotsc , p_n\}\subset {\mathcal {S}}\) |
\({\mathcal {E}}\) | A set of posts \({\mathcal {E}} \subseteq {\mathcal {W}}\) that represents a spatio-temporal event |