Algorithm 1 demonstrates the step-by-step operations of our beam search algorithm (see Sec. 4.3). We consider recovering sentences in the current work. We leave recovering longer paragraphs as future work. We keep 2000 examples of each dataset as the evaluation set, and use the left for training. "End-to-End optimization", "Reg" means the inclusion of a regularization term, "DR" refers to a discrete token Our approach is unique as it does not rely on end-to-end optimization, is demonstrated on large batch sizes (i.e.

Algorithm 1 demonstrates the step-by-step operations of our beam search algorithm (see Sec. 4.3). We consider recovering sentences in the current work. We leave recovering longer paragraphs as future work. We keep 2000 examples of each dataset as the evaluation set, and use the left for training. "End-to-End optimization", "Reg" means the inclusion of a regularization term, "DR" refers to a discrete token Our approach is unique as it does not rely on end-to-end optimization, is demonstrated on large batch sizes (i.e.

Breakthroughs, discoveries, and DIY tips sent every weekday. At 95 degrees, the heat rising off the track at the Circuit of the Americas in Austin, Texas, makes it impossible to see the 40-mph left turn at the end of the 170-mph straight before you need to brake for the turn. This makes every lap a leap of faith of sorts as you brake at the appointed spot and pray to Brembo, the patron saint of deceleration, that you'll slow in time to make the turn you know is coming but cannot see clearly through shimmering heat waves. The Brembo-supplied carbon ceramic brakes feature six-piston monobloc front calipers gripping 15.7-inch rotors and four-piston monobloc rear calipers squeezing 15.4-inch rotors. Pounding around COTA for lap after lap, the brakes continue to deliver, with no fade or hair-raising long pedal as exhibited by the Aston Martin Vantage during last year's track test.

The current approach to exploring and monitoring complex underwater ecosystems, such as coral reefs, is to conduct surveys using diver-held or static cameras, or deploying sensor buoys. These approaches often fail to capture the full variation and complexity of interactions between different reef organisms and their habitat. The CUREE platform presented in this paper provides a unique set of capabilities in the form of robot behaviors and perception algorithms to enable scientists to explore different aspects of an ecosystem. Examples of these capabilities include low-altitude visual surveys, soundscape surveys, habitat characterization, and animal following. We demonstrate these capabilities by describing two field deployments on coral reefs in the US Virgin Islands. In the first deployment, we show that CUREE can identify the preferred habitat type of snapping shrimp in a reef through a combination of a visual survey, habitat characterization, and a soundscape survey. In the second deployment, we demonstrate CUREE's ability to follow arbitrary animals by separately following a barracuda and stingray for several minutes each in midwater and benthic environments, respectively.

The New York City Police Department has spent over $159 million on surveillance systems and maintenance since 2007 without public oversight, according to newly released documents. The Legal Aid Society (LAS) and the Surveillance Technology Oversight Project (STOP) obtained the documents from the NYPD, which include contracts with vendors. They show that the NYPD has spent millions on facial recognition, predictive policing tech and other surveillance systems. The NYPD made the purchases through a Special Expenses Fund. It didn't need to gain the approval of the NYC Council or other city officials before signing the contracts, as Wired reports.

Back and forth he walks across the polished hardwood floors of a barge anchored in a fjord off the southwestern coast of Norway. The barge sits alongside one of the world's largest salmon farms. It's November and the sky is cloudless, the mountains are snow-capped, the water is a clear sapphire blue. The control room has the feel of a W Hotel lobby with its elegant lighting and spare Scandinavian design. On one wall are huge monitors streaming video from nine underwater cages nearby. Aarskog scans the footage--masses of salmon swimming in circles like glittering cyclones--and mutters what I take to be Norwegian profanities.

The latest revolutionary robot isn't the metallic, costly machine you'd expect: It's squishy like Silly Putty, wireless, battery-less and made for pennies by a 3-D printer. It looks like a tiny octopus and is designed to mimic that slithery creature to get through cracks and tight places, making it ideal as a rescue robot. A team at Harvard University has created a robot -- actually about 300 of them, since they are so cheap to make -- that is opposite of the common view of a robot. The octobot is an entirely soft, autonomous robot. A pneumatic network, pink, is embedded within the octobot's body and hyperelastic actuator arms, light blue.

A new robot stingray can swim with help from an unexpected source: muscle cells that were taken from rat hearts, a new study finds. Understanding how to build machines from heart cells could lead to scientists being able to build entire living artificial hearts from muscle cells that would act more like natural hearts, the researchers said. Stingrays and related fish have flat bodies with long wing-like fins. These fins undulate in waves that ripple from the front of the fins to the back, energy-efficient motions that help these fish glide through water. Researchers sought to build a robot that emulates the stingray's efficiency and maneuverability.

Scientists have designed a robotic stingray that could help our understanding of the human heart. The miniature robot, one-tenth the scale of the actual fish, moves using heart cells taken from a rat. Researchers hope the robotic ray will give new insight into the heart's ability to pump blood and its potential implications in heart disease. The research is published in the journal, Science. "It turns out the musculature in the stingray has to do the same thing as the heart does: it has to move fluids," said lead researcher, Prof Kevin Kit Parker of Harvard University, US.

Nature-inspired robotics is a hot field these days. We've reported on robots designed to mimic cockroaches, salamanders, cheetahs, sea snakes, among others. Basically, if it's alive, somebody out there is trying to make a robot version. So a robot inspired by a stingray might sound like more of the same. This tiny swimming robot, created by researchers at Harvard University's Department of Bioengineering and Applied Sciences, is powered by rat muscle cells, making it a biohybrid machine--part robot, part biological tissue.