  In recent years, social media has become a ubiquitous and integral part of
social networking. One of the major attentions made by social researchers is
the tendency of like-minded people to interact with one another in social
groups, a concept which is known as Homophily. The study of homophily can
provide eminent insights into the flow of information and behaviors within a
society and this has been extremely useful in analyzing the formations of
online communities. In this paper, we review and survey the effect of homophily
in social networks and summarize the state of art methods that has been
proposed in the past years to identify and measure the effect of homophily in
multiple types of social networks and we conclude with a critical discussion of
open challenges and directions for future research.
