social matrix

how social matrix comes true?

As part of our day to day awareness, we are constantly making unconscious calculations about the value of the people, places and things in our lives. We are attracted to things of equal or higher value, and we lose attraction for things with lower value.

in that way, we unconsciously form a matrix and that is social matrix.

what can we do with social matrix?

Collaborative Filtering (CF), which automatically predicts the interests of a particular user based on the collective rating records of similar users or items, has been extensively studied. The underlying assumption in traditional CF models is that similar users would prefer similar items. However, CF-based models suffer from the sparsity problem and imbalance of rating data, especially for new and infrequent users. Thus, the predicted ratings from CF-models can be unreliable. To overcome the major weaknesses of CF-based recommendation sys- tems, many models have been proposed to explore ad- ditional information, such as item’s content informa- tion (Basilico & Hofmann, 2004; Wang & Blei, 2011) and user’s social network (Jamali & Ester, 2009; Ma et al., 2008). For example, Collaborative Topic Regres- sion (CTR) is a state-of-the-art model which naturally incorporates content information via latent dirchelet allocation (Blei et al., 2003) into collaborative filter- ing framework. Social network-based CF models were recently proposed to find the user’s like-minded neighbors to address the rating sparsity limitation. As we can see, most existing work have been focused on uti- lizing either content or social network information, but few have considered them jointly.

That is a quote from a paper which study recommendation by using the social matrix.

Do you feel like social media should be part of your marketing strategy but you're just not sure where to start?

Have you erected social media pages but can't get the reach or following you're looking for?

Do you feel like you have a great story to tell but just don't know how or where to tell it online?

Do you want to grow your brand but aren't sure how online fits in your offline initiative?

Relax, breathe deep. We're here to put you on the path to social media nirvana.

also another quote from a social matrix media business.

as you can see, social matrix is kind of a Golden Mine, which formed by people with no margin cost,and waiting for us to dig. 

There are many attributes in it, in-degree, out-degree, betweenness. centrality, prestige and etc. To count it can be done through some easy equation, but the important is to understand what's behind it.

social matrix is a really important tech nowadays.
  

group cognition on social cloud

1. What is the definition of Social Cloud?

A Social Cloud is a resource and service sharing framework utilizing relationships established between members of a social network.

The social network is at least partly based on real world relationships.It do have different type like Enterprise, public science, collaborative, and covers computation and storage.

The resources exchanged need not be symmetric and can represent vastly different capabilities. A cloud-based usage model is used to enable virtualized resource sharing through service-based interfaces.

A Social Cloud leverages pre-existing trust relationships between users to enable mutually beneficial sharing within the context of a social network.

2. What are the possible applications of a Social Cloud?

The potential application scenarios that benefit from Cloud models are immense (from scalable web servers through to data intensive scientific applications).

These are our group cognition, we all have our own opinion, and it seems different.After discussion, we can make a conclusion, i think this is a group cognition.

Since all these years, as cognitive phycology develops, different methods are being used for group cognition, like brain storm, Collective Intelligence and etc. It need much more expertise and time and other tough conditions, than social cloud. Social cloud enables people to get in a group and start to think about questions anywhere anytime. Further more, it enable us to record and share at the same time.

So, social cloud is making a different in group cognition

Build a health online community

As learned from lecture four, The Social Cognitive Theory is really important to understand if you really wanna to build a health online community!
Social Coginitive Theory focused on what ad how people learn from one another through observation, imitation and modeling.There are some general priciples about SCT:

1.People do not only learn by first hand trial, but also observing the behaviors of others and the outcomes of those behaviors.

2.Learning can occur without a change in behavior.

3.The consequence of behavior and Cognition plays a role in learning.

4. People can have considerable control over their action and environment.

All we can learn for online community building is that, we have to take care of the way we talk, things we do online, because, it may effect the others, and do bad or good to the whole community.Good people may do stupid things, and that may cause bad things for ordinary people who observe good people or famous people.

My idea is maybe sometime it's good to set a topic administrator, who examine all the topics posted by users in community.All of this based on one hypothesis that bad guys always exists.To build a health online community, to let people envolved in this good learning community,we need to and must set good examples to let the others learn. In that case,people can get what they want,and we can build a learning trend community. Otherwise, if everyone trying to share meaningless stuff and the environment is gonna be ruined.

We do not only set topic administrator to delete unproperate topics, but also need to encourage the good topics like promoting the good topics that everybody can see it and also the people who proposed it, In that way, people who are do active thoughts are been rewarded in famous and other common user get a better chance to meet good topics.

All in all, i think there still many things need to be done to build a health onlien community :)

Little thinking about SNS

  Social Networking Service aka SNS is becoming hotter since Web 2.0 and Facebook.And nowadays..we cant even call it a hot, it's everywhere, it's in our ordinary life.Everyone has a Facebook or maybe its Chinese copy Renren.

So, what i wanna think about is  what makes a social network and is there any difference Facebook-kind SNS sites make?

As the professor said in class, social network is not something new, everyone is involving in different social networking system. When u r alive,u r one member of the family social network system,go to a school, joined the local education social network, social network is a thing that forms our life.Why we felt if some city were like home, but others r just like stranger points on map, no matter how long we spent there. Because we have a lot of connections in home-city.
 We r living in different social networks, and our friendships, relations and every connections is a tunnel forms the network,what's important is that, we r kind of everyday wanna develop the network.we look forward to meet new people, to talk with different people, even to get some new relations. Just like a spider, we build our networks and everyone else does, the net becomes bigger, so that we can get more opportunities! All these connects in different domains forms a big social network called society :)

  Human are social animal, we can not live without society which is the biggest social network.So...i think that is my understanding about social network.

  Then, here comes another question, does the Web 2.0 or i can say Facebook make any difference?Well, the answer is definitely yes,with web2.0, we changed a lot in the way people interact with each other.But, when we take a deep thought,does it invent something new? actually, i dont think so,we still can chat and share with each other in the web 1.0 age. Maillist is a cool thing..but, the web 2.0 brings a new concept "service". The SNS aka Social Network Service is the really thing! Actually there is nothing new, but how to use the technology to give people a better experience when they want share or talk with friends no matter when and where.

So, here is my conclusion, social network is just some thing normally and historically in the society and our life, people get a better service in the web 2.0 age.

hello wrold&about me

I was a coder and am trying not to be and i am now studying in CUHK for MscIE.

I will give more than 4 posts in this blog..

I was a blogger back in 2008,but nowadays, everybody is twittering,kind of weird..but for the scores, i will keep on doing this. As comments and responses is counting for scores, PLZ be kindly do comments!!



I was a part the startup ( http://42qu.com) as operation chief, in 2011.

I joined the sterno.ru for about one or two week as Python Engineer in 2012.

I worked for sohu.com in the mobile department,also as a Python Engineer in 2012.

And now, i am a freshman in CUHK(Chinese University of Hong Kong).