Children don’t have to be told that “cat” and “cats” are variants of the same word — they pick it up just by listening. To a computer, though, they’re as different as, well, cats and dogs. Yet it’s computers that are assumed to be superior in detecting patterns and rules, not four-year-olds. Researchers are trying to, if not to solve that puzzle definitively, at least provide the tools to do so.
Researchers gave a computer program the outline of how a magic jigsaw puzzle and a mind-reading...
Researchers have developed a statistical technique that sorts out when changes to words’...
Researchers have developed a new algorithm which increases the small time step required by...
A new mathematical analysis tool has allowed a deeper understanding of the anatomy of the human head, describing the skull as an extended network structured in 10 modules. Researchers have developed a research methodology called Anatomical Network Analysis (AnNA), based on network analysis mathematical tools for studying anatomy.
Astronomers have their own version of the single person's dilemma: Do you wait by the phone for a call? Or do you make the call yourself and risk getting shot down? Instead of love, of course, astronomers are looking for alien life and, for decades, they have sat by their telescopes waiting to hear from E.T. It didn't happen. Now, some want to beam messages out into the void and invite the closest few thousand worlds to chat or even visit.
To bring facts and clarity to the public debate about immunization in light of the recent measles outbreak, the University of Pittsburgh Graduate School of Public Health unveiled a computer simulation that explores the impact of measles outbreaks in cities across the U.S. Users can see how an outbreak would play out if their city had high or low vaccination rates.
The author of this wonderful text delivers a brief, easy-to-absorb, yet very comprehensive text on modeling real-world data with Maple. Maple is software for performing mathematics, with a none-too-steep learning curve. In the introduction, the author is quick to point out that this is neither a detailed textbook of mathematical modeling, nor Maple. It is, however, a very well-written manual of introductory modeling and use of Maple.
Statistical decision making resembles a process Alan Turning's team did in Bletchley Park to work out the settings of German enigma machines. In order to make use of the large clicking machine, Turing's team analyzed pairs of randomly intercepted German messages, aligned them one above the other to accumulate evidence from letter pairs until they reach a threshold level of certainty that the messages were sent on identical enigma machine.
Top researchers are using mathematical modelling and heavy computations to understand how the brain can both remember and learn. Ten years ago, when the team of Marianne Fyhn and Torkel Hafting Fyhn cooperated with the Nobel Prize winning team of May-Britt and Edvard Moser at NTNU, they discovered the sense of orientation in the brain.
A breakthrough could lead to the more precise transfer of information in computer chips, as well as new types of optical materials for light emission and lasers. Researchers were able to control light at tiny lengths around 500 nanometers — smaller than the light’s own wavelength — by using random crystal lattice structures to counteract light diffraction. The discovery could begin a new phase in laser collimation.
Researchers have cracked a code that governs infections by a major group of viruses, including the common cold and polio. The unnoticed code had been hidden in plain sight in the sequence of the ribonucleic acid (RNA) that makes up this type of viral genome. But researchers have unlocked its meaning and demonstrated that jamming the code can disrupt virus assembly. Stopping a virus assembling can stop it functioning.
For decades, researchers in artificial intelligence, or AI, worked on specialized problems, developing theoretical concepts and workable algorithms for various aspects of the field. However, in recent years, as the individual aspects of artificial intelligence matured, researchers began bringing the pieces together, leading to amazing displays of high-level intelligence.
Wrinkle Predictions: New Mathematical Theory may Explain Patterns in Fingerprints, Raisins, MicrolensesFebruary 2, 2015 2:00 pm | by Jennifer Chu, MIT | News | Comments
As a grape slowly dries and shrivels, its surface creases, ultimately taking on the wrinkled form of a raisin. Similar patterns can be found on the surfaces of other dried materials, as well as in human fingerprints. While these patterns have long been observed in nature, and more recently in experiments, scientists have not been able to come up with a way to predict how such patterns arise in curved systems, such as microlenses.
Much of our reams of data sits in large databases of unstructured text. Finding insights among e-mails, text documents and Web sites is extremely difficult, unless we can search, characterize and classify their text data in a meaningful way. A leading big data algorithm for finding related topics within unstructured text is LDA. But Luis Amaral found that it was neither as accurate nor reproducible as a leading topic modeling algorithm ...
Every undergraduate computer-science major takes a course on data structures, which describes different ways of organizing data in a computer’s memory. Every data structure has its own advantages: Some are good for fast retrieval, some for efficient search, some for quick insertions and deletions, and so on.
The five universities have been selected to lead the new Alan Turing Institute. The Institute will build on the UK's existing academic strengths and help position the country as a world leader in the analysis and application of big data and algorithm research. Its headquarters will be based at the British Library at the center of London’s Knowledge Quarter.
Quantum chemical calculations have been used to solve big mysteries in space. Soon the same calculations may be used to produce tomorrow’s cancer drugs. Quantum chemical calculations are needed to explain what happens to the electrons’ trajectories within a molecule, and the results of a quantum chemical calculation are often more accurate than what is achievable experimentally.
If you were trying to forecast tomorrow's weather, you would probably look up at the sky rather than down at the ground. But if you live in the U.S. Midwest or someplace with a similar climate, one key to a better weather forecast may lie beneath your feet. Better soil moisture observations lead to better land-atmosphere interaction in weather forecasting models and ultimately to a better prediction of temperature and precipitation.
IBM researchers have announced a cloud-based technology that holds potential to help consumers better protect online personal data, including date of birth, home address and credit card numbers. The technology, called Identity Mixer, uses a cryptographic algorithm to encrypt the certified identity attributes of a user in a way that allows the user to reveal only selected pieces to third parties.
Registration is now open for a workshop on “Improving Data Mobility and Management for International Cosmology” to be held February 10-11, 2015, at Lawrence Berkeley National Laboratory in California. The workshop, one in a series of Cross-Connects workshops, is sponsored the by the Deptartment of Energy’s ESnet and Internet2. Early registration is encouraged, as attendance is limited.
A handwritten notebook by Alan Turing, the World War II code-breaking genius depicted by Benedict Cumberbatch in the Oscar-nominated The Imitation Game, is going on the auction block. The 56-page manuscript was written at the time the British mathematician and computer science pioneer was working to break the seemingly unbreakable Enigma codes used by the Germans throughout World War II. It is expected to bring at least $1 million.
Just because concrete is the most widely used building material in human history doesn’t mean it can’t be improved. A recent study using DOE Office of Science supercomputers has led to a new way to predict concrete’s flow properties from simple measurements. The results should help accelerate the design of a new generation of high-performance and eco-friendly cement-based materials by reducing time and costs associated with R&D.
Optimization algorithms, which try to find the minimum values of mathematical functions, are everywhere in engineering. Among other things, they’re used to evaluate design tradeoffs, to assess control systems, and to find patterns in data. One way to solve a difficult optimization problem is to first reduce it to a related but much simpler problem, then gradually add complexity back in ...
Is glass a true solid? Researchers have combined computer simulation and information theory, originally invented for telephone communication and cryptography, to answer this puzzling question. This puzzle of a material which seems solid to any observer while appearing fluid under the microscope is an old one. And, even with the help of today's supercomputers, it seems impossible to verify in simulations whether a glass ever stops flowing.
Software that Knows the Risks: Planning Algorithms Evaluate Probability of Success, Suggest Low-risk AlternativesJanuary 16, 2015 1:57 pm | by Larry Hardesty, MIT | News | Comments
Imagine that you could tell your phone that you want to drive from your house in Boston to a hotel in upstate New York, that you want to stop for lunch at an Applebee’s around 12:30, and that you don’t want the trip to take more than four hours. Then imagine that your phone tells you that you have only a 66 percent chance of meeting those criteria — but that if you can wait until 1:00 for lunch, or if you’re willing to eat at TGI Friday...
For household robots to be practical, they need to be able to recognize the objects they’re supposed to manipulate. While object recognition is one of the most widely studied topics in AI, even the best detectors still fail much of the time. Researchers believe the robots should take advantage of their mobility, imaging objects from multiple perspectives. Matching up objects in the different images, however, poses computational challenges.
Wave equations help describe waves of light, sound and water as they occur in physics. Also known as partial differential equations, they have valuable potential for predicting weather or earthquakes, or certain types of natural disasters. Tao is interested in the theoretical side of these equations, seeking to discover with computer algorithms whether they can behave in a way that typically is the opposite of what occurs in the real world.
Topology, a branch of mathematics classifying geometric objects, has been exploited by physicists to predict and describe unusual quantum phases: the topological states of matter. These intriguing phases, generally accessible at very low temperature, exhibit unique conductivity properties, which are particularly robust against external perturbations, suggesting promising technological applications.
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