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Predicting Group Evolution in the Social Network

Groups - social communities are important components of entire societies, analysed by means of the social network concept. Their immanent feature is continuous evolution over time. If we know how groups in the social network has evolved we can use this information and try to predict the next step in the given group evolution. In the paper, a new aproach for group evolution prediction is presented and examined. Experimental studies on four evolving social networks revealed that (i) the prediction based on the simple input features may be very accurate, (ii) some classifiers are more precise than the others and (iii) parameters of the group evolution extracion method significantly influence the prediction quality
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Social Network Analysis #sna
Social Network Analysis
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G20 Twitter Communities

G20 Twitter Communities | Social Network Analysis #sna | Scoop.it

Introduction Last weekend the G20 Conference was hosted in Brisbane Australia. According to the G20 official website the objectives of G20 are: The Group of Twenty (G20) is the premier forum for its members’ international economic cooperation and decision-making

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Restaurant Business: Everyone Knows Everyone.

Restaurant Business: Everyone Knows Everyone. | Social Network Analysis #sna | Scoop.it
It’s uncanny how many New York chefs and restaurateurs have worked with the same handful of people.
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Wikipedia Mining Algorithm Reveals The Most Influential People In 35 Centuries Of Human History

Wikipedia Mining Algorithm Reveals The Most Influential People In 35 Centuries Of Human History - The Physics arXiv Blog - Medium
The top ranked men and women will surprise you
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What interests reddit?

What interests reddit? | Social Network Analysis #sna | Scoop.it
“Mark Allen Thornton, Psychology Ph.D. Candidate in the Social Cognitive and Affective Neuroscience Lab at Harvard University”
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Wang: The Role of the Director Social Networks in Spreading Misconduct

Wang: The Role of the Director Social Networks in Spreading Misconduct | Social Network Analysis #sna | Scoop.it

ABSTRACT: After 2000, a growing number of foreign firms list in the United States through reverse merger, a non-IPO listing technique that requires less information disclosure. Are the US regulations rigorous enough to deter the listing attempts of weak foreign firms? 

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Using a social network analysis, I find that the firms are assisted by Western professionals to help them circumvent the US regulations, and they commit fraud and benefit from fast stock sales after listing. Further, I find that the social network of the linked directors facilitates the spread of their misconduct. During the wrongdoers’ listings, the investors in these firms lost at least $811 million. However, the penalties charged to the wrongdoers only accounted for 4.19% of this loss. I also find that the US-listed Chinese firms have a lower average Tobin’s q compared to the China-listed firms, in contrast to the prior research’s findings. These findings contradict the concurrent research that uses the reverse mergers’ financial data, which proves to be unreliable

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Social network analysis: Centrality measures

Centrality measures: What they are, what they tell us and when to use them. Degree centrality, betweenness centrality and closeness centrality summarized.
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Intellectual Cooperation: multi-level network analysis of an international organization

Intellectual Cooperation: multi-level network analysis of an international organization | Social Network Analysis #sna | Scoop.it
Digital humanities, Data visualization, Network analysis
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Fascinating maps of what people tweet about in Istanbul, Baltimore, Barcelona and more

Fascinating maps of what people tweet about in Istanbul, Baltimore, Barcelona and more | Social Network Analysis #sna | Scoop.it
Dave Troy crunches data to see places not as neighborhoods but as relationships between people.
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72 Hours of #Gamergate — The Message — Medium

72 Hours of #Gamergate — The Message — Medium | Social Network Analysis #sna | Scoop.it
Digging through 316,669 tweets from three days of Twitter’s two-month-old trainwreck
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Existence of outsiders as a characteristic of online communication networks

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Online social networking services (SNSs) involve communication activities between large number of individuals over the public Internet and their crawled records are often regarded as proxies of real (i.e., offline) interaction structure. However, structure observed in these records might differ from real counterparts because individuals may behave differently online and non-human accounts may even participate. To understand the difference between online and real social networks, we investigate an empirical communication network between users on Twitter, which is perhaps one of the largest SNSs.
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The tribes of Davos

The tribes of Davos | Social Network Analysis #sna | Scoop.it
By David Blood and Aleksandra Wisniewska
More than 2,500 people are attending the World Economic Forum in Davos this week, but how are they connected outside of the picturesque alpine town?
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10 Types of Odd Friendships You're Probably Part Of | Wait But Why

10 Types of Odd Friendships You're Probably Part Of | Wait But Why | Social Network Analysis #sna | Scoop.it
When you're young, you make friends kind of by accident. Then they stick.
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Pseudo Feature Extraction in Social Network Analysis and Text Mining

Pseudo Feature Extraction in Social Network Analysis and Text Mining | Social Network Analysis #sna | Scoop.it
This is a webinar I delivered as a part of a webinar series entitled "We are all Social Things" organized by the IS department at King Saud University - Fema...
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Applause is Contagious Like a Disease - D-brief

Applause is Contagious Like a Disease - D-brief | Social Network Analysis #sna | Scoop.it
“ Applause spreads linearly, like a disease. The amount of time an individual feels like clapping is a factor, but not nearly as much as peer pressure.”
Via Sakis Koukouvis, Complexity Institute, Alessandro Cerboni
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Cat Perrin's curator insight, July 12, 2013 6:11 AM

La foule.. et son effet de masse...

robyns tut's curator insight, October 14, 2013 1:04 PM

This is interesting, how peer pressure can factor into little things. Would be good to see what makes the brain do these things and what chemical reactions occure.

-Tanah

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Social networks in primates: smart and tolerant species have more efficient networks

Social networks in primates: smart and tolerant species have more efficient networks | Social Network Analysis #sna | Scoop.it
Network optimality has been described in genes, proteins and human communicative networks. In the latter, optimality leads to the efficient transmission of information with a minimum number of connections. Whilst studies show that differences in centrality exist in animal networks with central individuals having higher fitness, network efficiency has never been studied in animal groups. Here we studied 78 groups of primates (24 species). We found that group size and neocortex ratio were correlated with network efficiency. Centralisation (whether several individuals are central in the group) and modularity (how a group is clustered) had opposing effects on network efficiency, showing that tolerant species have more efficient networks. Such network properties affecting individual fitness could be shaped by natural selection. Our results are in accordance with the social brain and cultural intelligence hypotheses, which suggest that the importance of network efficiency and information flow through social learning relates to cognitive abilities.
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What can we learn from the history of social network analysis? | Knight Lab | Northwestern University

What can we learn from the history of social network analysis? | Knight Lab | Northwestern University | Social Network Analysis #sna | Scoop.it
Northwestern University Knight Lab is a team of technologists and journalists working at advancing news media innovation through exploration and experimentation.
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Network visualization – Gephi fun with R

Network visualization – Gephi fun with R | Social Network Analysis #sna | Scoop.it
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In the second part of my “how to quickly visualize networks directly from R” series, I’ll discuss how to use R and the “rgexf” package to create network plots in Gephi. Gephi is a great network visualization tool that allows real-time network visualization and exploration, including network data spatializing, filtering, calculation of network properties, and clustering. 

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Thanksgiving ingredient network leftovers

Thanksgiving ingredient network leftovers | Social Network Analysis #sna | Scoop.it
Michaeleen Doucleff just wrote a very fun article on our recipe network paper for NPR’s the Salt. It made me realize that Edwin Teng, Yuru Lin and I have some leftover plots that may be Thanksgiving appropriate. If you don’t have quite the right ingredients handy while cooking Thanksgiving dinner, here is a network of [...]
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Alexander Semenov's curator insight, November 29, 2014 8:15 PM

Our International laboratory of applied social network analysis has similar project

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See how red tweeters and blue tweeters ignore each other on Ferguson

See how red tweeters and blue tweeters ignore each other on Ferguson | Social Network Analysis #sna | Scoop.it
There are red tweets and blue tweets…
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Alexander Semenov's curator insight, December 17, 2014 2:51 AM

I haven't seen a meaningful hairball in a while. Here is one of them: echo-chamber effect in tweets about Ferguson.

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Data science with F#: Social network analysis - Twitter case study by @evelgab

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In this session we will work through the whole process of social network analysis: from downloading connections using Twitter REST-based API, to implementing our own PageRank algorithm which finds the most central Twitter accounts. In the process you’ll see how we can use F# type providers to access data and harness the power of the statistical language R to run some machine learning algorithms.

At the end, you’ll know how to run your own analysis on data from Twitter and how to use data science tools to gain insights from social networks.

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