This section provides a brief overview of the socioeconomic and demographic characteristics of urban lowincome
(Table 2). According to clustering results, there are 1687 low income samples in the dataset (about 20.3%
of all people). Women are more than men, accounting for 52.87%. With respect to occupation, more than 20%
are the retired people and another 16.18% being workers. The largest proportion of the low income is in the range
of 60 years and over (23.71%). The range of 40-49 years comes the second. It is seen explicitly that majority of
the people just obtain education level of high school or even below. None of low income samples have master
degree or above.