You probably noticed a few things about TheEGG: a recent decrease in blog post frequency and an overall focus on the algorithmic lens — especially its view of biology. You might also be surprised by the lack of discussion of quantum information processing: the most successful on-going application of the algorithmic lens. I actually first […]... Read more »
h-index is an index that attempts to measure both the productivity and impact of the published work of a scientist or scholar. Here, I am going to tell the way through which you can forecast your future h-index.
While presenting this tutorial, I consider that you have a good knowledge of R software, which is one of the rapidly rising open source statistics software. You can get the software here,
http://cran.r-project.org/bin/macosx/ (........ Read more »
To escape the Montreal cold, I am visiting the Sunshine State this week. I’m in Tampa for Moffitt’s 3rd annual integrated mathematical oncology workshop. The goal of the workshop is to lock clinicians, biologists, and mathematicians in the same room for a week to develop and implement mathematical models focussed on personalizing treatment for a […]... Read more »
Horn, M., Glauche, I., Müller, M.C., Hehlmann, R., Hochhaus, A., Loeffler, M., & Roeder, I. (2013) Model-based decision rules reduce the risk of molecular relapse after cessation of tyrosine kinase inhibitor therapy in chronic myeloid leukemia. Blood, 121(2), 378-84. PMID: 23175686
There are several steps that researchers can take to bolster the integrity of their work, but embracing the use of the “new statistics” of effect sizes, estimation, and meta-analysis is a particularly important one, argues psychological scientist Geoff Cumming of La Trobe University in Australia.... Read more »
According to the researchers, the capacity of counting is used by animals living in societies to understand whether or not for communities it is convenient to fight with other groups, because numerically superior groups can attack at relatively low cost to themselves.... Read more »
Sarah Benson-Amram, Virginia K. Heinen, Sean L. Dryer, Kay E. Holekamp. (2011) Numerical assessment and individual call discrimination by wild spotted hyaenas, Crocuta crocuta. Animal Behaviour. DOI: 10.1016/j.anbehav.2011.07.004
George E. P. Box is famous for the quote: “all models are wrong, but some are useful” (Box, 1979). A statement that many modelers swear by, often for the wrong reasons — usually they want preserve their pet models beyond the point of usefulness. It is also a statement that some popular conceptions of science […]... Read more »
Box, G. E. P. (1979) Robustness in the strategy of scientific model building. Robustness in statistics. info:/
More elaborate statistical training is important for clinicians so that they can do research, and elaborate/interpret the medical findings better, according to a recent study.
Researchers, in the present study, worked on the statistical techniques used in one of the most prestigious journals, Journal of the American Medical Association (JAMA), and found that the frequency and complexity of statistical reporting have increased in th........ Read more »
Arnold LD, Braganza M, Salih R, Colditz GA. (2013) Statistical Trends in the Journal of the American Medical Association and Implications for Training across the Continuum of Medical Education. PLoS ONE. DOI: 10.1371/journal.pone.0077301
The age at which we die determines how fast our population grows. Recent work shows how to predict the growth rate of a population from the age-at-death distribution. more Schindler S, Tuljapurkar S, Gaillard JM, & Coulson T (2012). Linking the population growth rate and the age-at-death distribution. Theoretical population biology, 82 (4), 244-52 PMID: […]... Read more »
Schindler S, Tuljapurkar S, Gaillard JM, & Coulson T. (2012) Linking the population growth rate and the age-at-death distribution. Theoretical population biology, 82(4), 244-52. PMID: 23103877
The latest SAT and ACT data show record declines for men, whites, and Native Americans. Analysis of state SAT data suggests that family income does not significantly affect scores when controlled for parents’ education and race.... Read more »
Anonymous. (1998) Why Family Income Differences Don't Explain the Racial Gap in SAT Scores. The Journal of Blacks in Higher Education, 6-8. DOI: 10.2307/2999198
Anonymous. (2008) Why Family Income Differences Don't Explain the Racial Gap in SAT Scores. The Journal of Blacks in Higher Education, 10-12. info:/
When cells are put under stress (e.g. UV light, ionising radiation, reactive oxygen species) they undergo a process known as cellular senescence in which cell division (mitosis) is arrested. This is thought to contribute to ageing. In their 2013 paper Naylor and colleagues outline a strategy to selectively remove in vivo senescent cells expressing p16Ink4A .... Read more »
Naylor RM, Baker DJ, & van Deursen JM. (2013) Senescent cells: a novel therapeutic target for aging and age-related diseases . Clinical Pharmacology . DOI: 10.1038/clpt.2012.193
As you might have guessed from my recent posts, I am cautious in trying to use mathematics to build insilications for predicting, profiting from, or controlling financial markets. However, I realize the wealth of data available on financial networks and interactions (compared to similar resources in ecology, for example) and the myriad of interesting questions […]... Read more »
For 300 years we have known that the Earth’s magnetic field moves gradually westward. Computer simulations on the CSCS super-computer “Monte Rosa” by researchers at ETH Zurich and the University of Leeds explain why this happens.... Read more »
Livermore PW, Hollerbach R, & Jackson A. (2013) Electromagnetically driven westward drift and inner-core superrotation in Earth's core. Proceedings of the National Academy of Sciences of the United States of America, 110(40), 15914-15918. PMID: 24043841
Mathematics has a deep and rich history, extending well beyond the 16th century start of the scientific revolution. Much like literature, mathematics has a timeless quality; although its trends wax and wane, no part of it becomes out-dated or wrong. What Diophantus of Alexandria wrote on solving algebraic equations in the 3rd century was still […]... Read more »
Arora, S., Barak, B., Brunnermeier, M., & Ge, R. (2011) Computational complexity and information asymmetry in financial products. Communications of the ACM, 54(5), 101-107. DOI: 10.1145/1941487.1941511
I’ve written a few posts now about using parallel tempering to sample from complicated multi-modal target distributions but there are also other benefits and uses to this algorithm. There is a nice post on Darren Wilkinson’s blog about using tempered posteriors for marginal likelihood calculations. There is also another area where parallel tempering finds application, […]The post Stochastic Optimization in R by Parallel Tempering appeared first on Lindons Log.... Read more »
Li Yaohang, Protopopescu Vladimir A., Arnold Nikita, Zhang Xinyu, & Gorin Andrey. (2009) Hybrid parallel tempering and simulated annealing method. Applied Mathematics and Computation, 212(1), 216-228. DOI: 10.1016/j.amc.2009.02.023
Yesterday, I shared a video of John Maynard Smith introducing evolutionary game theory (EGT) to the London Mathematical Society. I suggested that at its foundation, EGT was just like classical game theory, and based on equilibrium analysis — the evolutionary stable strategy (Maynard Smith & Price, 1973). Given a utility function that gives the expected […]... Read more »
Conitzer, V. (2013) The exact computational complexity of evolutionarily stable strategies. The 9th Conference on Web and Internet Economics (WINE). info:/
Although this blog has recently been focused on static fitness landscapes and the algorithmic lens, it’s url and a big chunk of the content focuses of evolutionary game theory (EGT). Heck, I even run a G+ community on the topic. If you are a biologist and asked me to define EGT then I would say […]... Read more »
This honeybee swarm has precious little time to make a democratic decision as to where they will move to. A decision deadlock could have fatal consequences. Image by Nino Barbieri at Wikimedia Commons.In case you've been living in a cave lately, the U.S. Government has been shut down since October 1st. Not because of a terrorist attack or a bank system meltdown or a natural disaster, but because Congress cannot agree on a spending bill to determine our government's funding plan for the next year........ Read more »
Seeley, T.D., Visscher, P.K., Schlegel, T., Hogan, P.M., Franks, N.R., & Marshall, J.A.R. (2012) Stop signals provide cross inhibition in collective decision-making by honeybee swarms. Science, 108-111. DOI: 10.1126/science.1210361
My office computer recently got a really nice upgrade and now I have 8 cores on my desktop to play with. I also at the same time received some code for a Gibbs sampler written in R from my adviser. I wanted to try a metropolis-coupled markov chain monte carlo, , algorithm on it to […]The post Parallel Tempering in R with Rmpi appeared first on Lindons Log.... Read more »
Earl David J., & Deem Michael W. (2005) Parallel tempering: Theory, applications, and new perspectives. Physical Chemistry Chemical Physics, 7(23), 3910. DOI: 10.1039/b509983h
Before her mother convinced her to be a doctor, my mother was a ballerina. As a result, whenever I tried to blame some external factor for my failures, I was met with my mother’s favorite aphorism: a bad dancer’s shoes are always too tight. “Ahh, another idiosyncratic story about the human side of research,” you […]... Read more »
Livnat A, & Pippenger N. (2008) Systematic mistakes are likely in bounded optimal decision-making systems. Journal of Theoretical Biology, 250(3), 410-23. PMID: 18022645
Summer days are gone and I am back to work. I thought that Terry Tao’s criticism to my work was finally settled and his intervention was a good one indeed. Of course, people just remember the criticism but not how the question evolved since then (it was 2009!). Terry’s point was that the mapping given […]... Read more »
Marco Frasca. (2009) Mapping a Massless Scalar Field Theory on a Yang-Mills Theory: Classical Case. Mod. Phys. Lett. A 24, 2425-2432 (2009). arXiv: 0903.2357v4
Attilio Cucchieri, & Tereza Mendes. (2007) What's up with IR gluon and ghost propagators in Landau gauge? A puzzling answer from huge lattices. PoS LAT2007:297,2007. arXiv: 0710.0412v1
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