Semantic Labeling of User Location Context Based on Phone Usage Features

Algorithm 1

Example: computing features related to phone calls and night stay in different data representations.

Assume that start times and durations are available for

(i) visits: and

(ii) calls: and

(iii) nights: and

visit   (compute for all )

(i) find the smallest index such that

(ii) find the largest index such that

,

 where multiplication with converts the time units to hours

places: home

(i) find set of all visit indices such that  

cumulative sample  : home (compute for all )

Computation of for calling at home:

(i) find set of all visit indices such that

 and

Computation of for night stay at home:

for all  

 if exists such that

 else if exists such that

end for