Army and university scientists are turning to problems with social media to create social sensing as a scientific discipline. For the Army in particular, this emerging science space, they say, will better help commanders assess and comprehend the accuracy and true meaning of information on the battlefield.
Information scientists at the U.S. Army Research Laboratory and the University of Michigan have borrowed from the popular game "20 Questions," to make an important step towards helping robots maintain continuous and purposeful conversation with humans. They have developed an optimal strategy for asking a series of yes/no questions that rapidly achieves the best answer.
Surprisingly, a quintessential equation of quantum mechanics emerges while studying astronomical disks of orbiting material.
The average rate at which Americans tip for services has been increasing steadily for decades, but the practice has been branded over the years as classist, anti-egalitarian, and downright undemocratic, leading some restaurateurs to abandon it. A new paper, drawing insight from nonlinear dynamics and published in the journal Chaos, hopes to shed light on the economically irrational world of tipping, showing that at a certain point, banning the practice might be fair and profitable.
The same techniques used to train self-driving cars and chess-playing computers are now helping physicists explore the complexities of the quantum world. For the first time, physicists have demonstrated that machine learning can reconstruct a quantum system based on relatively few experimental measurements. This method will allow scientists to thoroughly probe systems of particles exponentially faster than conventional, brute-force techniques.
Most election polls take the political pulse of a state or nation by reaching out to citizens about their voting plans. Santa Fe Institute Professor Mirta Galesic says pollsters might also ask: how do your friends plan to vote?
Physicists have devised a new method of investigating brain function, opening a new frontier in the diagnoses of neurodegenerative and aging-related diseases. This new noninvasive technique could potentially be used for any diagnosis based on cardiovascular and metabolic-related diseases of the brain. Preliminary results showed evidence of a decline in the coherence between these oscillations in participants over the age of 25, indicating that brain ageing may begin earlier than expected.
Improvements in traffic flow and fuel consumption are boosted when even a few autonomous vehicles are immersed in bulk traffic, according to research by Rutgers University-Camden mathematics scholar Benedetto Piccoli.
Honeybees gathering nectar inspired an algorithm that eased the burden of host servers handling unpredictable traffic by about 25 percent. Nature can inspire some great engineering, but it can also lead to some flops. Take slime mold: Standard algorithms beat it hands down to model connectivity. AAAS annual meeting presentation by systems researcher Craig Tovey.
A team from the Industrial and Systems Engineering department at Lehigh University gathered with their colleagues at the KAUST Research Workshop on Optimization and Big Data in February to discuss the latest developments in big data optimization algorithms, theory, applications and systems.