The past 20-30 years is the period which
saw the rapid development of global technology, especially the huge progress of
Information technology. I deeply feel the pulse of knowledge information-the
main melody of the development of the world. Not only Facebook, Twitter….
emerging and swiftly developing, But also how social media’s great influence to
our life.
These years, a ‘storm’ sweeps all over the
world which is called ‘Social Network Site’ is also one type of social media. In
China, There are also several different social network platform appear these years
such as Renren and Weibo… And there are also more and more people engaged in
the network and the number is still increasing at incredible speed.
Apparently, Social media plays an important
role in people’s life nowadays. It gives us a platform that we could stay in
touch with our friends in a straightforward way and help us to find more
friends and build the relationship in a magical way that we never image before.
We could easily find the people not only the friend we haven’t seen for ages,
but also who have the same hobby or lifestyle with us, even though we don’t
know each other before and more and more people build relationship in this way
by the social media high technology. We could also see many different recommendation
for us on the network which is about shopping on Taobao or Amazon or focus on
push some great movie or stars on Douban or Google+. It’s also a machine
analysis of our behavior in social network in our friend relationship and even
the Weibo/Twitter we posted before. These huge data in the network help us
learn our self and also give us a resources that we could use to manage or find
small clues about our life.
The course gave us an efficient way to approach
these tech. The first three courses let us know some basic conception in social
media and give us a broad view to these technology. Social media is not one but
multiple disciplinary field, Such as data mining, machine learning, artificial
intelligence, Hadoop and even some human analysis technology…are been used in
the social media analysis. NLP is one of them and it’s used to analyze the text
that people posted on the network. Modem NLP algorithms are based on machine
learning. We learned some basic supervised learning algorithm such as tf-idf, Naïve
Bayes and unsupervised learning algorithm such as K-means.
Although there is not much about coding on
the class but the conception also help us to understand the basic theory in NLP
and its very important to us to apply these algorithm and go deep in the future.
Reference:
[1]Social Media - Wikipedia
http://en.wikipedia.org/wiki/Social_media
[2]Mining Online Data Across Social Networks - Jure Leskovec, PHD
https://www.youtube.com/watch?v=IBov98-LIbI
Data mining is really important for social media. For example, k-means, knn, NB, SVM is widely used in Xinlang Weibo. Especially, SVMs can efficiently perform a non-linear classification using what is called the kernel trick, implicitly mapping their inputs into high-dimensional feature spaces in social media.
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