Update sessionization.md

Author: structured-query-language

sessionization.md

@@ -6,7 +6,7 @@ Sessionization is the act of turning event-based data into sessions. It is widel
 
 Whereas, timeseries analysis, usually uses "Gaps and Islands" - if there are no measurements for a relatively extended interval, this causes a "gap"; and a cluster of several measurements, close, time-wise, to each other, causes an "island".
 
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 |_Figure 2._ A session, for example, can be defined by threshold time such as if the next action is in a range of time greater than `T=50`, it defines the start of a new session.