Geography Reference
In-Depth Information
Tabl e 7. 2
Attributes of the four people
Person
Attributes
P1
A professor teaching at HuaZhong University of Science and Technology
Home is in GuanShan
P2
A post-graduate student at HuaZhong University of Science and Technology
Home is in Hankou
P3
A government official working in Hanyang. Home is in Hanyang
P4
A retailer. Home is in Xudong
Tabl e 7. 3
Requirements for joint activity participation
ID
Activity
Participants
Day
Time
A1
Business survey
P1, P2
Workday
In the morning
A2
Meeting
P1, P2, P3, P4
Saturday
In the morning
A3
Entertainment
P2, P3, P4
Sunday
In the morning
Tabl e 7. 4
Preferences of people for starting times and durations of activities
People
Activity
Preference for starting time (
time
_
of
_
day
)
DT
_
min
(/min)
P1
A1
0.9
150
P2
A2
0.8
60
A1
0.95
160
P3
A2
0.95
80
A3
0.85
55
A2
0.7
70
P4
A3
0.9
50
A2
0.8
50
A3
0.8
60
Tab le
7.4
lists preferences of people for starting times and durations of activities.
Based on the above activity assumptions, an activity scheduling problem for four
people over one week has been clearly described.
Before scheduling their joint activity participations, it is necessary to describe
two types of important background information about the activity scheduling:
1. The first type of information concerns the routing mobility of the four people.
Figure
7.5
illustrates their routing mobility and their available activity time for
joint participation. Each space-time path represents the routing movements of
one person. The time window between the disconnected lines represents each
person's available activity time window for joint participation with others.
2. The second important type of information is the dynamic transportation network.
This research uses the transportation network shown in Fig.
7.2
, which contains
26,429 directed links. The travel speed over each transportation link for every
5-min period was derived from the trajectory data of 12,325 monitored taxis
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