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Table 1 Various types of static time segments used in different applications

From: Context-aware rule learning from smartphone data: survey, challenges and future directions

Time interval type

Number of segments

Used time interval and segment details

References

Equal

3

Morning [7:00–12:00], afternoon [13:00–18:00] and evening [19:00–24:00]

Song et al. [46]

Equal

3

[0:00–7:59], [8:00–15:59] and [16:00–23:59]

Rawassizadeh et al. [47]

Equal

4

Morning [6:00–12:00], afternoon [12:00–18:00], evening [18:00–24:00] and night [0:00–6:00]

Mukherji et al. [48]

Equal

4

Morning [6:00–12:00], afternoon [12:00–18:00], evening [18:00–24:00] and night [0:00–6:00]

Bayir et al. [49]

Equal

4

Morning, afternoon, evening and night

Paireekreng et al. [41]

Equal

4

Morning [6:00–11:59], day [12:00–17:59], evening [18:00–23:59], overnight [0:00–5:59]

Jayarajah et al. [50]

Equal

4

Night [0:00–6:00 a.m.], morning [6:00 a.m.–12:00 p.m.], afternoon [12:00–6:00 p.m.], and evening [6:00 p.m.–0:00 a.m.]

Do et al. [51]

Unequal

3

Morning (beginning at 6:00 a.m. and ending at noon), afternoon (ending at 6:00 p.m.), night (all remaining hours)

Xu et al. [52]

Unequal

4

Morning [6:00–12:00], afternoon [12:00–16:00], evening [16:00–20:00] and night [20:00–24:00 and 0:00–6:00]

Mehrotra et al. [7]

Unequal

5

Morning [7:00–11:00], noon [11:00–14:00], afternoon [14:00–18:00] and so on

Zhu et al. [9]

Unequal

5

Morning, forenoon, afternoon, evening, and night

Oulasvirta et al. [53]

Unequal

5

Morning [7:00–11:00], noon [11:00–14:00], afternoon [14:00–18:00], evening [18:00–21:00], and night [21:00–Next day 7:00]

Yu et al. [54]

Unequal

> 5

Early morning, morning, late morning, midnight and so on

Naboulsi et al. [55]

Unequal

> 5

Early morning, morning, late morning, midnight and so on

Dashdorj et al. [56]

Unequal

> 5

Early morning, morning, late morning, midnight and so on

Shin et al. [57]

Unequal

8

S1[0:00–7:00 a.m.], S2[7:00–9:00 a.m.], S3[9:00–11:00 a.m.], S4[11:00 a.m.–2:00 p.m.], S5[2:00–5:00 p.m.], S6[5:00–7:00 p.m.], S7[7:00–9:00 p.m.] and S8[9:00 p.m.–12:00 a.m.]

Farrahi et al. [58]