Suppose you’re trying to navigate an unfamiliar section of a big city, and you’re using a particular cluster of skyscrapers as a reference point. Traffic and one-way streets force you to take some odd turns and, for a while, you lose sight of your landmarks. When they reappear, in order to use them for navigation, you have to be able to identify them as the same buildings you were tracking before — as well as your orientation...
By the end of the 21st century, some parts of the world can expect as many as 30 more...
Antarctica's Ross Sea is one of the few polar regions where summer sea-ice coverage has...
A Lawrence Livermore National Laboratory physicist and his colleagues have found a new...
A Lawrence Livermore National Laboratory physicist and his colleagues have found a new application for the tools and mathematics typically used in physics to help solve problems in biology. Specifically, the team used statistical mechanics and mathematical modeling to shed light on something known as epigenetic memory — how an organism can create a biological memory of some variable condition, such as quality of nutrition or temperature.
NAG Library for Java Release 2 enables the calling of precisely 1,784 mathematical and statistical routines to aid complex computation, and enhanced error reporting enables increased precision from computation results. It provides abstract classes for callback functions.
Behind every “Top 100” list are a generous sprinkling of personal bias and subjective decisions. However, the first dynamic visualization software of its kind, LineUp allows users to assign weights to different parameters to create a custom ranking.
The National Energy Research Scientific Computing (NERSC) Center recently accepted “Edison,” a new flagship supercomputer designed for scientific productivity. Named in honor of American inventor Thomas Alva Edison, the Cray XC30 will be dedicated in a ceremony held at the Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) on February 5, 2014, and scientists are already reporting results.
An international team of scientists has discovered that two of the world's most devastating plagues – the plague of Justinian and the Black Death, each responsible for killing as many as half the people in Europe—were caused by distinct strains of the same pathogen, one that faded out on its own, the other leading to worldwide spread and re-emergence in the late 1800s. These findings suggest a...
The sweltering year of 1988 first put global warming in the headlines and ended up as the hottest year on record. But on January 21, 2014, it was pushed out of the top 20 warmest by 2013. Last year tied for the fourth hottest and 1988 fell to 21st.
MathWorks announced that The Nobel Foundation has adopted MATLAB to support the asset-liability management strategies of its $500 million (3.3 billion kronor) portfolio and meet its long-term goal of providing monetary awards to future Laureates.
The Gordon and Betty Moore Foundation announced an open call for applications for its brand-new Data-Driven Discovery Investigator competition. The foundation seeks individuals who exemplify multidisciplinary, data-driven science, coalescing natural sciences with methods from statistics and computer science.
Josiah Stamp said: “The individual source of the statistics may easily be the weakest link.” Nowhere is this more true than in the new field of text mining, given the wide variety of textual information. By some estimates, 80 percent of the information available occurs as free-form text which, prior to the development of text mining, needed to be read in its entirety in order for information to be obtained from it.
Researchers at Los Alamos National Laboratory are investigating the complex relationships between the spread of the HIV virus in a population (epidemiology) and the actual, rapid evolution of the virus (phylogenetics) within each patient’s body.
A new algorithm designed at the University of Toronto has the power to profoundly change the way we find photos among the billions on social media sites such as Facebook and Flickr. This month, the United States Patent and Trademark Office will issue a patent on this technology. The search tool uses tag locations to quantify relationships between individuals, even those not tagged in any given photo.
Origin and OriginPro 9.1 feature auto-positioning of labels in graphs, with the ability to add leader lines and to place labels arbitrarily such as attaching to data plot, to axes, or at fixed positions within the graph layer.
Object recognition is one of the most widely studied problems in computer vision. But a robot that manipulates objects in the world needs to do more than just recognize them; it also needs to understand their orientation. Is that mug right-side up or upside-down? And which direction is its handle facing?
This latest post, inspired by International Talk Like a Pirate Day,1,2 will take a brief look at the Arrr..., I mean R, programming language. R is an open source functional scripting language designed for statistical analysis and data visualization.
One way to study criminal behavior and predict a criminal's next move is by analyzing his or her movement. Several mathematical models have addressed this in detail, in particular, the UCLA "burglary hotspot" model, also the topic of a previous Nugget published by the Society for Industrial and Applied Mathematics (SIAM).
In the wake of deadly tornadoes in Oklahoma this past spring, researchers have developed a new statistical model that will help determine whether the risk of tornadoes is increasing and whether they are getting stronger. Climatologists have been hampered in determining actual risks by what they call a population bias: That is, the fact that tornadoes have traditionally been underreported in rural areas compared to cities.
Several tests can provide an understanding of the relationship between X and Y. Mark Twain wrote: “Facts are stubborn, but statistics are more pliable.” Statistics actually can be more “pliable,” although not in the sense that Mark Twain intended. Often, we have data that is categorical rather than continuous.
It is always a pleasure to review a text that is easy to read and understand, when targeted to a novice audience. This book was written for business majors at the junior undergraduate level, and not statistics majors. However, it is recommended that readers have a course in introductory statistics before using this book.
Need a car, but don’t want the hassle of owning one? Today, there are many services to help you get around this jam, including traditional car-rental companies, taxis, and car-sharing programs such as Zipcar and Greenwheels. But what if you want to drive a car without the inconvenience of having to return it to your starting point? That’s where a concept called “mobility on demand” comes in.
The 14th annual KDnuggets Software Poll, conducted in May 2013, attracted record participation of 1,880 internet voters, more than doubling the previous year's numbers. KDnuggets.com is a data mining portal and newsletter publisher for the data mining community with more than 12,000 subscribers.
Researchers used bioinformatics in two recent cancer studies in which, specifically, public domain genomics data helped to identify a tumor suppressor gene’s role in human cancers. The approach took the work out of animal models and moved it into computer analysis.
PITTSBURGH—This past weekend teams from the National Football League used statistics like height, weight and speed to draft the best college players, and in a few weeks, armchair enthusiasts will use similar measures to select players for their own fantasy football teams. Neuroscientists at Carnegie Mellon University are taking a similar approach to compile "dream teams" of neurons using a...
Mathematical Models Out-perform Doctors in Predicting Cancer Patient Outcomes and Treatment ResponseApril 23, 2013 2:15 pm | by ESTRO | News | Comments
Mathematical prediction models are better than doctors at predicting the outcomes and responses of lung cancer patients to treatment, according to new research presented at the 2nd Forum of the European Society for Radiotherapy and Oncology. These differences apply even after the doctor has seen the patient, which can provide extra information, and knows what the treatment plan and radiation dose will be.
Harvard researchers are adding statistical nuance to our understanding of how modern and historical temperatures compare. Through developing a statistical model of Arctic temperature and how it relates to instrumental and proxy records derived from trees, ice cores, and lake sediments, they have shown that the warmest summers in the last two decades are unprecedented in the previous six centuries.
William James once said: “We must be careful not to confuse data with the abstractions we use to analyze them.” Collinearity is a problem that occurs during the creation of regression models. It is the presence of intercorrelation among predictor variables. In other words, it occurs when a regressor is a linear combination of one or more other regressors.
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