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Efficiently Computable Safety Bounds for Gaussian Processes in Active Learning

Tebbe, Jörn, Zimmer, Christoph, Steland, Ansgar, Lange-Hegermann, Markus, Mies, Fabian

arXiv.org Artificial Intelligence

Active learning of physical systems must commonly respect practical safety constraints, which restricts the exploration of the design space. Gaussian Processes (GPs) and their calibrated uncertainty estimations are widely used for this purpose. In many technical applications the design space is explored via continuous trajectories, along which the safety needs to be assessed. This is particularly challenging for strict safety requirements in GP methods, as it employs computationally expensive Monte-Carlo sampling of high quantiles. We address these challenges by providing provable safety bounds based on the adaptively sampled median of the supremum of the posterior GP. Our method significantly reduces the number of samples required for estimating high safety probabilities, resulting in faster evaluation without sacrificing accuracy and exploration speed. The effectiveness of our safe active learning approach is demonstrated through extensive simulations and validated using a real-world engine example.


Comment on "Machine learning conservation laws from differential equations"

Zimmer, Michael F.

arXiv.org Artificial Intelligence

In lieu of abstract, first paragraph reads: Six months after the author derived a constant of motion for a 1D damped harmonic oscillator [1], a similar result appeared by Liu, Madhavan, and Tegmark [2, 3], without citing the author. However, their derivation contained six serious errors, causing both their method and result to be incorrect. In this Comment, those errors are reviewed.


A Disney director tried--and failed--to use an AI Hans Zimmer to create a soundtrack

MIT Technology Review

Edwards, who ended up using the real, flesh-and-blood human Hans Zimmer for the soundtrack of his movie, said he played the AI-generated track back to the composer. Zimmer, he said, found it amusing. Edwards's experiment speaks to an issue at the heart of one of the biggest fights facing Hollywood today. Artists and creatives are up in arms over generative AI. Hollywood is currently at a standstill as actors and writers are striking over fairer labor conditions and the use of generative AI in the film industry.


Lyft Aspired to Kill Car Ownership. Now It Aims to Profit From It

WIRED

Lyft customers know it as the bright-pink app to tap when they need a car ride or to rent a bike or scooter. Today the company announced it wants to be the place to go to care for your own car. Lyft's app will offer a way to find and reserve parking in 16 cities, summon roadside assistance, and schedule vehicle maintenance. Adding those new services is a small step for an app but part of a much bigger shift in ride hailing. As Lyft and its larger competitor Uber search for a way to finally generate a profit, some visions they once espoused for the future have been tweaked, if not left on the side of the road.


Mobileye Shares Open Higher in Stock-Market Debut

WSJ.com: WSJD - Technology

Shares of Mobileye Global rose 27% out of the gate in their trading debut, in one of the highest-profile and largest initial public offerings of the year. Intel automated car-driving unit initially traded at $26.71, above its IPO price of $21 a share. That gives Mobileye a valuation of more than $21 billion. The stock opened on the Nasdaq stock market a little before midday Wednesday, trading under the symbol MBLY. More than 3.5 million shares changed hands in the opening trade.


'Autonomous cars won't soon take the role of human drivers on Lyft'

#artificialintelligence

San Francisco: Uber's rival ride-hailing platform Lyft's co-founder and President John Zimmer said that human drivers on the platform are not going to be replaced by autonomous vehicles anytime soon. According to TechCrunch, Zimmer said he "can't imagine anytime in the next decade-plus where we would need any less drivers". He noted that he envisions autonomous vehicles handling anywhere from 1 per cent to 10 per cent of rides in the future. "What we do in our industry represents maybe 1 per cent of vehicle miles traveled," Zimmer was quoted as saying. "There is much more room for growth of our overall business," he added.


Lyft says its future lies in a hybrid network of autonomous and driver rides

Engadget

Lyft drivers don't have to worry about being fully replaced by the company's autonomous vehicles just yet. Company president John Zimmer told CNBC that Lyft intends to operate a hybrid network at first, with a fleet that's largely comprised of non-autonomous cars. "[J]ust like what happened with phones, you didn't have 3G go to 4G go to 5G on separate networks," Zimmer explained."You And similar to when LTE was new and mobile users mostly had to connect to the internet via 3G, Lyft passengers will also largely have to rely on rideshare drivers. Zimmer envisions a network wherein autonomous vehicles will only be taking five percent of all trips at first, with rideshare drivers taking the lion's share of the rides booked through the platform.


Toyota to buy self-driving division of U.S. ride-hailing firm Lyft

The Japan Times

Toyota Motor Corp. said Tuesday it had agreed with ride-hailing firm Lyft Inc. to acquire the U.S. firm's self-driving division for $550 million, aiming to accelerate its development of autonomous driving technologies. The purchase via Woven Planet Holdings Inc., a Toyota unit engaging in software development, will equip the Japanese automaker with development bases in California and London in addition to Tokyo. Woven Planet and Lyft also have agreed to use Lyft's system and fleet data to speed up commercialization of Woven Planet's automated-driving technology and improve its safety features. This will be the first buyout by Woven Planet since it began operations in January this year. It plans to complete the acquisition of Lyft's division, Level 5, in five years.


John Zimmer, Tony Fernandes: Charting the future of transportation

#artificialintelligence

Those were some of the questions posed by John Zimmer, president and co-founder of U.S. rideshare firm Lyft, at the recent Rakuten Optimism 2019 conference in Yokohama, Japan. Lyft became the first ridesharing company to go public earlier this year when it completed an IPO with a valuation of $24 billion. It has also been pursuing autonomous driving technology: in partnership with Aptiv, Lyft recently notched 50,000 rides in Las Vegas in just a year, and has recently launched Waymo autonomous vehicles on the Lyft platform in Phoenix, Arizona. Against that background, Zimmer spoke about the future of transport with Mickey Mikitani, CEO of early Lyft investor, Rakuten. "We have to think about what is the right infrastructure to support (the future of transport)," Zimmer said during his second appearance at Optimism since speaking at the inaugural conference last year in San Francisco.


11 Fantastic Science Books to Binge Over the Holidays

WIRED

This year brought no shortage of great science-themed books. Spurred by rapid advances in biotech, the writer Carl Zimmer spun a personal tale around the emerging science of heredity. Investigative reporter John Carreyrou exposed the rotten business at the heart of Theranos, the blood-testing startup built on air. Our past also proved bountiful, with books on that time we made teenage girls glow until their bones rotted (The Radium Girls), and when competing visionaries dueled over how to steward our one and only world (The Wizard and the Profit). If that all seems a bit much, we've got an escape hatch: psychedelics. Lots of them, as recounted by Michael Pollan. But those are just a few of the superb tomes to emerge in 2018.