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Category: Mechanical Engineering

Driving Business Decisions Using Data Science and Machine Learning

Problem formulationDefining the problem is critical to the success of any project. Pre-analysis is often conducted to understand the current business problems and challenges, along with what we want to achieve and how to align this with business priorities. Label preparationLabeled data is the thing we are predicting in a machine learning scenario (for example, a relevant piece of content in a feed recommendation system). Label definitions are key to training, testing, and validating data sets. Depending on the implications…

F8 2019 Day 2 keynote and session videos

At F8 2019 day 2, topics included a new method for computer vision, new techniques for self-supervised learning, and a new framework for inclusive AR/VR. Watch the video of the keynote address and summaries of several of the technical sessions.This post will update as session videos are available Keynote address Chief Technology Officer Mike Schroepfer kicked things off with a discussion of our investment in AI tools that help us tackle a wide range of complex challenges across our products…

US, Russia, China race to develop hypersonic weapons

Russia and China have recently touted their progress in developing hypersonic vehicles, which fly much faster than the speed of sound, which is 767 mph. Hypersonic missiles are rocket-boosted to high altitude and may be launched from land, sea or air. They fly far faster than any other weapons – more than 3,000 mph and potentially up to 10,000 mph – which makes them difficult to identify, avoid or shoot down. After leading the development of this technology area for…

Team using drones with machine learning to automate methane leak detection

Maria Araujo inspects a drone that uses midwave infrared cameras (MWIR) to autonomously detect methane leaks. SwRI’s Smart LEak Detection System (SLED) uses computer vision and machine learning to detect pipeline leaks from aerial drones. Credit: Southwest Research Institute A Southwest Research Institute methane leak detection system is taking flight as part of a U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL) project to develop automated inspections of oil and gas facilities. SwRI researchers will adapt the Smart…

F8 2019 Day 1 keynote and session videos

Today, we kicked off F8 2019. Thousands of attendees gathered in San Jose to learn about our latest plans, research, tools, and open source releases. Topics included ensuring Messenger and WhatsApp are the fast, secure, private centers of your social experience; making Communities as central as friends in Facebook; making commerce thrive in Instagram; and developing the technology that will shape next-generation platforms. Check out videos of today’s F8 keynote address and several of the technical sessions below. This post…

Brain connectivity issues found in children who have experienced prenatal alcohol exposure — ScienceDaily

An international group of researchers has taken one of the first major steps in finding the biological changes in the brain that drive fetal alcohol spectrum disorder (FASD). New work using chaos theory to analyze brain signals, discussed this month in the journal Chaos, from AIP Publishing, shows the long-term effects. Researchers found that teenagers who were exposed to alcohol while in the womb showed altered brain connections that were consistent with impaired cognitive performance. Their findings were reached by…

Improving Uber’s Mapping Accuracy with CatchME

Reliable transportation requires a robust map stack that provides services like routing,  navigation instructions, and ETA calculation. Errors in map data can significantly impact services, leading to a suboptimal user experience. Uber engineers use various sources of feedback to identify map errors, for instance,  machine learning models to log and understand user feedback, or by evaluating map metrics to improve map quality. Figure 1: A missing road segment on the left-hand map leads to a 7.6 minute ETA. The accurate…

Northeastern students design and build devices to help improve the lives of individuals with disabilities

Students Alex Rivas and Rachel Biega work on a Gate Trainer Harness, which is used in the physical therapy treatment of patients who have limited walking capabilities, in the Enabling Engineering Lab in Hayden Hall on April 24, 2019. Credit: Matthew Modoono/Northeastern University Kevin Leiser starts with his eyes closed and his back to the target. As he turns and raises the compound bow, he keeps his eyes shut, listening to the beeping in his headphones. He adjusts his aim…

xdpcap: XDP Packet Capture

Our servers process a lot of network packets, be it legitimate traffic or large denial of service attacks. To do so efficiently, we’ve embraced eXpress Data Path (XDP), a Linux kernel technology that provides a high performance mechanism for low level packet processing. We’re using it to drop DoS attack packets with L4Drop, and also in our new layer 4 load balancer. But there’s a downside to XDP: because it processes packets before the normal Linux network stack sees them,…

Ghana eyes world record in medical drone service

Ghana launched a fleet of drones Wednesday to carry medical supplies to remote areas, with President Nana Akufo-Addo declaring it would become the “world’s largest drone delivery service.” The craft are part of an ambitious plan to leapfrog problems of medical access in a country with poor roads. “No one in Ghana should die because they can’t access the medicine they need in an emergency,” Akufo-Addo said in a statement to mark the launch. “That’s why Ghana is launching the…