Archive for May, 2007

Information Cascades in Presidential Primaries

New York Times article about new 2008 presidential primary schedule: http://www.nytimes.com/2007/05/04/us/politics/04florida.html?_r=1&ref=us&oref=slogin
Before election season even begins, why do prospective presidential nominees spend so much time in Iowa and New Hampshire? What is so important about Iowa and New Hampshire that causes politicians to flock there months (now, years) before an election is even on the horizon? […]

Posted in Topics: Social Studies

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Evolutionary Game Theory Applied to Culture?

http://plato.stanford.edu/entries/game-evolutionary/
In this article, found at the Stanford Encyclopedia of Philosophy, the topics of evolutionary game theory are discussed. In addition to the Hawk-Dove game that we learned about in class, they use a model with the prisoner’s dilemma. This game is pat of a dynamic model […]

Posted in Topics: Education

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Discrete action space is essential for informational cascade formation

In his paper ” On the convergence of informational cascades” (http://www.sciencedirect.com/science/article/B6WJ3-45P12S4-N/2/8a374f4e23f6ea6d04deb1891875e7c1) , In Ho Lee discusses the formation of informational cascades when the action space is continuous.
In the basic model of Bikhchandani, Hirshleifer and Welch, each person makes a binary “Accept/Reject” action after considering his own signal and the actions of his predecessors. It turns […]

Posted in Topics: General

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Facebook as a catalyst of creating random links

In the Apr 17, 2007 issue of Fink Again former Editor-in-Chief of The Cornell Daily Sun Erica Fink analyzes the various ways Facebook has been used outside of its definition as an online medium for social interaction. The piece culminates with a look into how Facebook as a social network has turned into a unifying force for college students. In terms of […]

Posted in Topics: Education

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This is Digg!

As previously mentioned by jmholloway, the spread of the HDDVD decryption key on Digg forced the site to a crucial decision.
To briefly explain, the key to decrypt the AACS encryption on HDDVDs spread on a myriad of websites, including Digg. The hexadecimal code was posted in news articles and comments throughout Digg, and each […]

Posted in Topics: Technology

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Cisco’s Business Strategy and Network Effects

“Cisco to Buy WebEx”
http://www.redorbit.com/news/technology/902812/cisco_to_buy_webex/index.html?source=r_technology
In what appears a very strategic M&A deal, Cisco has decided to acquire a company named WebEx Communications for a very large chunk of cash–$3.2 billion. The former is a leading supplier of networking equipment, such as routers and switches. WebEx, meanwhile, is in the applications sector–providing services which allow […]

Posted in Topics: General

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Effects of Stochastic Errors on Evolutionary Behavior

In our brief introduction to evolutionary game theory, we defined an evolutionarily stable strategy roughly as one that tends to drive a fractionally small population of mutant strategies to extinction over time. Our setting for investigating this idea was the Hawk-Dove game played between behaviorally instinctive animals; here we saw that successive generations of […]

Posted in Topics: Mathematics, Science, Social Studies

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Using social psychology to motivate contributions to online communities

Using social psychology to motivate contributions to online communities
This paper delves into the problem of under-contribution among online communities. The authors conduct several experiments on a community called MovieLens - a movie recommendation community. In an effort to test various hypotheses regarding what factors effect users’ tendencies to participate in such an online community, […]

Posted in Topics: Education

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Colorado Representative looks to implement new voting methods

 http://www.fortcollinsweekly.com/index.php?option=com_content&task=view&id=647&Itemid=35
Colorado Representative John Kefalas is looking to bring new voting methods to his state for the November 2008 election to try and eliminate the problems with the current voting system. Currently, in Colorado, citizens vote for one candidate for each opening position, however it is often the case that no candidate receives more than 50 […]

Posted in Topics: Education

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Condemned to Googlehell?

Going back to the topic of page rank, and the illusive Google search algorithms, did you know that your website could end up in “Googlehell”? Googlehell refers to the supplemental index which has been created to “store” websites that the Google search algorithm deems of “low quality” or websites that seem they are artificially designed […]

Posted in Topics: Education, Technology

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