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A Fuzzy-set-based Joint Distribution Adaptation Method for Regression and its Application to Online Damage Quantification for Structural Digital Twin

Zhou, Xuan, Sbarufatti, Claudio, Giglio, Marco, Dong, Leiting

arXiv.org Artificial Intelligence

Online damage quantification suffers from insufficient labeled data that weakens its accuracy. In this context, adopting the domain adaptation on historical labeled data from similar structures/damages or simulated digital twin data to assist the current diagnosis task would be beneficial. However, most domain adaptation methods are designed for classification and cannot efficiently address damage quantification, a regression problem with continuous real-valued labels. This study first proposes a novel domain adaptation method, the Online Fuzzy-set-based Joint Distribution Adaptation for Regression, to address this challenge. By converting the continuous real-valued labels to fuzzy class labels via fuzzy sets, the marginal and conditional distribution discrepancy are simultaneously measured to achieve the domain adaptation for the damage quantification task. Thanks to the superiority of the proposed method, a state-of-the-art online damage quantification framework based on domain adaptation is presented. Finally, the framework has been comprehensively demonstrated with a damaged helicopter panel, in which three types of damage domain adaptations (across different damage locations, across different damage types, and from simulation to experiment) are all conducted, proving the accuracy of damage quantification can be significantly improved in a realistic environment. It is expected that the proposed approach to be applied to the fleet-level digital twin considering the individual differences.


Key drivers of the metaverse market

#artificialintelligence

Emmanuelle Rivet, Vice Chair, and US TMT & Global Technology Leader, at PricewaterhouseCoopers (PwC), has over 26 years of experience advising public and private tech companies on complex transactions from M&A and equity or debt offerings to system implementation and operations transformation for scale and compliance. Emmanuelle is focused on helping diverse teams deliver tailored solutions, and places unique client needs first. Emmanuelle chats with us about the metaverse, what trends are emerging, the predicted growth in global spending on VR, how the metaverse will change business and consumer interactions, key drivers for the market, and tons more. Rivet: A surprising discovery from the data is that despite serious economic headwinds and after suffering a sharp decline in 2020 (-18.8%), the U.S. B2B segment of the market grew 7.9% in 2021 and is expected to grow by 13.7% in 2022. Revenue forecasts have the market on track to exceed pre-pandemic levels by 2023.


Ratchet & Clank: Rift Apart review – an unbelievably gorgeous sci-fi caper

The Guardian

At several points during my time with Ratchet & Clank – after landing on a new planet whose peculiar rocky landscape stretched off far into the distance, for instance, or while I was zipping around a collapsing city and battling a titanic robot as dimensional rifts catapulted me at speed through different worlds – I felt compelled to call my partner into the room to watch. If you want to know what the PlayStation 5 can do visually, this is the game that will show you. I have rarely been as awestruck by how a game looks; I think the last time was when I was drinking in the austere beauty of mythical Scandinavia in God of War. It's hard to overstate how technically impressive Rift Apart is, and how much that contributed to the joy I felt playing it. This family-friendly action game might not do anything revolutionary with its structure or storytelling, but good lord, does it elevate the spectacle and fun to a new dimension. This is a blissfully uncomplicated cartoon science-fiction escapade about two furry aliens trying to save the universe (multiple universes, in fact) from a robot supervillain with a gun that can tear open portals between dimensions.


'Ratchet and Clank: Rift Apart' is the best PlayStation exclusive since 'Bloodborne'

Washington Post - Technology News

The adventure bounces between the two heroes at the player's whim, with Rivet exploring one part of the galaxy and Ratchet the other. They're both on a mission to fix the interdimensional mess left by fan favorite villain Dr. Nefarious, who dragged the heroes into a universe where he's already won and dominates as an emperor. The pacing of depicting two different heroes working separately toward the same goal feels like a practice run for the inevitable Spider-Man sequel with more than one web slinger, and "Rift Apart" both displays and instills confidence in this balancing act. It's also important to note that playing as Rivet is no different from controlling Ratchet, which makes sense, considering the premise of alternate dimensions.


Hot Wheels' new TechMods are remote-control cars you build yourself

Engadget

Hot Wheels has excelled at merging the real and virtual worlds for the past few years, but a lot of that has really been focused on the driving experience. Specifically, how to make it more like a video game with toys like Hot Wheels AI, Mindracers and Augmoto. This year the brand is finally giving budding gear heads some love with its new TechMods set, an app-controlled vehicle that you build yourself and then control with your phone. It's not the same as tinkering under a hood, but it is actually fun to put together. The kit comes with a plastic chassis, which consists of a battery, a motor and four wheels, two of which can be steered. There's a plastic frame that snaps onto the top of it, with the rest of the vehicle's body made up of pre-cut plastic pieces that you punch out of several sheets and fold according to the in-app instructions.


Kamigami is a cute robot bug you build yourself

Engadget

There are plenty of products out there that teach STEM skills, from robots you can code to kits for building musical instruments or games. But the "fun" is often short-lived. Most of the activity is rooted in the building process, and the final product is often too basic or simplified to be very interesting. By contrast, Dash Robotics and Mattel's new Kamigami robotic kits are very much focused on what kids do after they finish putting them together. They still get a sense of accomplishment and might pick up a few STEM skills in the process, but in the end it's really about having your very own cute bug bot to race, battle and customize.


Boeing's struggle with 777 assembly robots adds to Everett production snarl

#artificialintelligence

Sept. 03--Production of Boeing's large 777 twinjet in Everett is significantly backed up, with incomplete jobs on each aircraft forcing catch-up work, some of which is being finished only after the jets roll out onto the airfield. Scrambling to fix the mess, they've kept 777 deliveries on track only by working long overtime hours, including weekends, with just two days off a month. Workers blame the new 777 robotic fuselage assembly system that management has been ramping up. This critical new technology, which Boeing must get right before the forthcoming 777X, automates the precise drilling and fastening together of fuselage panels for the big moneymaking jet. Boeing executives insist the robotics -- known as Fuselage Automated Upright Build, or FAUB -- are not the major hang-up.