Software
Now that the primaries have narrowed the number of viable major-party presidential candidates to three, ScienceDebate2008 promises to give each of them an opportunity to address an issue that is not strictly partisan: science and technology policy and what it means for the future of our nation and the world.
Because the Gaussian distribution is the exponential of squared parameters, the proof of its theorem for adaptation is a rather simple matter, which should be understandable at the high school level. Because the theorem is valid for all Gaussians and all regions of acceptability (even probability functions) it is in principle sufficient to see the proof for a Gaussian with variance = 1 in a single parameter. The proof is easily extended to an arbitrary number of parameters.
Does Michael Crichton wear a tin hat?
Will Kaiser/CDC admit we are infected with this? How will they react in the litterbox?
CDC produces Media Alert - Morgellons
According to Kjellström, 1969, (see reference in the list
http://en.wikipedia.org/wiki/Gaussian_adaptation#References)
a connection between GA and information theory is the average speed of stepwise random walks inside a high dimensional simplex region. It turns out that the speed is asymptotically proportional to (see also the point 7 in blog “Gaussian adaptation as a model of evolution”)
- P log(P),
where P is the probability that a random step will lead to a new feasible position inside the simplex. Maximum speed is obtained when P = 1/e = 0.37.
A plausible interpretation of this is that 1/P is proportional to the time/work needed to find a step leading to a feasible position, while –log(P) is the self-information obtained when such a step may be taken. Thus, – P log(P) may be seen as a measure of efficiency; information divided by the work/time needed to get the information. In addition GA maximizes the average information of a Gaussian distribution
Science Debate 2008 is a nonpartisan effort to promote a public discussion of science and technology policy in the coming U.S. Presidential election.
Supported by numerous university presidents, Nobel Laureates, and other scientific leaders, the effort appears to have reached viability with the announcement of its co-chairs, two congressmen from different political parties.
In this post, I am very pleased to release the results of one of my very first Web-based experiments. This was the experiment on visual attention alluded to a few days ago. Not long ago, a colleague presented results suggesting that trying to ignore an area in your visual field actually causes you to pay more attention to it -- which even effects the perception of time...
A mashup of two different types of web search tools could make find the useful nuggets of information among all the grit on the Internet much easier.
Recently , i am looking into the PCA details in R. I found that some difference between the formula correlation matrix and covariance
For the past ten years, Microsoft has been developing a software that will answer the call of Six Sigma professionals worldwide. One of the several reasons why Six Sigma initiatives fail with a new company, has been the inability of key stakeholders accessing a wealth of information and making sense of the information in a timely manner.
Cranio-maxillofacial surgery is a medical specialty focusing on facial and skull reconstruction. This surgery can help patients with such disorders as cleft palate, malformations of the upper or lower jaw, and problems with the facial skeleton due to injury. In their article "Mathematics in Facial Surgery," two researchers describe the mathematical techniques they have used to assist cranio-maxillofacial surgeons to predict the outcomes of surgery. These techniques have proven to be quite successful in producing predictions that end up matching well the post-operative outcomes.
The Business Intelligence (BI) platform/software is gaining traction in healthcare organizations in the US. But what are the implications of this software in terms of physician/hospital relationships?
From the OSBezierag location about the symmetric network generator.
Performing what a team of dedicated and bleary-eyed newspaper librarians would need months to do, scientists at UC Irvine have used an up-and-coming technology to complete in hours a complex topic analysis of 330,000 stories published primarily by The New York Times.
