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Archivo del Autor: Belen De Leon

Tesla pauses Model 3 production

Tesla has paused the production of Model 3, Buzzfeed first reported. However, this seems to be part of Tesla’s planned downtime for Model 3.

“Our Model 3 production plan includes periods of planned downtime in both Fremont and Gigafactory 1,” a Tesla spokesperson said back in February and again today to TechCrunch. “These periods are used to improve automation and systematically address bottlenecks in order to increase production rates. This is not unusual and is in fact common in production ramps like this.”

This comes shortly after Tesla CEO Elon Musk admitted that he was over-automating the production of the cars.

“Yes, excessive automation at Tesla was a mistake,” Musk tweeted a couple of days ago. To be precise, my mistake. Humans are underrated.”

That admission came following Bernstein analysts Max Warburton and Toni Sacconaghi arguing Tesla was overusing automation in the final production of Model 3 assembly.

Last August, Tesla said it expected to produce 5,000 Model 3 vehicles per week by the end of 2017. Tesla has since adjusted that number. In January, Tesla said it expects to end this quarter with a weekly rate of 2,500 Model 3 cars, with the goal to hit 5,000 per week by the end of Q2.

Earlier this month, Tesla said it was able to double the weekly Model 3 production rate over Q1 “by rapidly addressing production and supply chain bottlenecks, including several short factory shutdowns to upgrade equipment.”


Source: TechCrunch

Drone near-miss with commercial flight given highest risk rating – CNET

Commentary: UK authorities say that a drone passed a mere 20 feet over an Airbus 319 during takeoff.
Source: CNET

The White House Warns on Russian Router Hacking, But Muddles the Message

By scolding Russia for what looks like typical espionage, the US and UK are blurring red lines in cybersecurity.
Source: Wired

Hyundai goes all-in on big data with Verisk partnership – Roadshow

Hyundai is teaming up with one of the largest data exchanges for automobiles in the world to potentially save its customers some money on insurance.
Source: CNET

Lyft says its drivers have earned $500 million in tips – CNET

The last $100 million was given in just four months, the ride-hailing service says.
Source: CNET

'Remote detonator' Wi-Fi name leads to gym evacuation – CNET

Commentary: At a Michigan Planet Fitness, an unusual Wi-Fi name reportedly leads to a police intervention.
Source: CNET

Russian hackers targeting your router: Here's what to do video – CNET

Officials say Russian spies are looking for vulnerabilities in routers across the world. This is what you should do to change your router’s password.
Source: CNET

Electric scooters are getting closer to regulation in SF

The San Francisco Board of Supervisors’ Land Use and Transportation Committee has been working with the San Francisco Municipal Transportation Agency to develop a permit process to enable the SFMTA to regulate e-scooter share companies. Today, the Committee heard proposed legislation regarding permitting and enforcement of shared, electric scooter programs. The next step is for this to move forward to the Board of Supervisors for further consideration.

In the last month or so, three different scooter-share programs (from Bird, LimeBike and Spin) deployed their respective e-scooters without explicit permission. This has resulted in a number of scooters being left on the sidewalks and even on MUNI trains.

“I’m very annoyed with how these companies moved forward the last couple of weeks,” Supervisor Jane Kim, a sponsor of the legislation, said today.

The big takeaway from today is that all of these scooter companies jumped the gun pertaining to deployment in San Francisco.

“To say that you asked us for permission and implied we gave you that permission” before deploying the scooters, Supervisor Kim said, “isn’t the best way to build trust.”

Similar to what the city did around dockless bikes, the city is looking to do the same with dockless scooters. The idea isn’t to ban them, but rather to ensure there are rules and regulations around scooters, and that they don’t cause a public nuisance. If all goes according to plan, the SFMTA said it hopes to open up the permitting process May 1.

Earlier today, SF City Attorney Dennis Herrera sent cease-and-desist letters to all three of the companies, requesting a response by April 30. Although there is no proposed complete ban, it’s quite obvious that Supervisors Kim and Aaron Peskin are not happy with each respective startup’s approaches to launching their scooters in San Francisco without explicit permission.

“It’s clear that many of these companies continue to build corporate empires off of a basic premise — making massive profit always trumps protecting the public and innovation is only possible by cutting corners,” Peskin said.

In his opening remarks, Peskin also touched on how this is not emergency legislation, despite what Bird wanted some people to think. He also noted how he and other supervisors have received numerous complaints from the public about the recent proliferation of scooters.

Many of those comments were vocalized today. In the public comment portion, residents expressed concerns of these scooters taking up too much space on sidewalks, and becoming hazards to seniors and people with disabilities. On a couple of occasions, citizens also spoke to concerns of arrogance and elitism that e-scooters represent.

On the other side, members from a local community group in the Bayview neighborhood expressed how some of the companies, like Lime, are proactively working with their communities and even hiring community members to work for them.

Representatives from Lime, Spin and Bird also chimed in. LimeBike said its looks forward to “a fair and transparent process that balances the real and serious concerns of the public.” Spin similarly said it has no intention of doing anything that conflicts with any local or state laws. Bird, on the other hand, went a step further and asked for a window to continue operating while the city figures out its permitting process.

The proposed legislation looks to establish a violation for electric scooters left on sidewalks that do not have a proper permit from the SFMTA.

“With a permit, we would require the scooter share companies to educate their users on how to ride and park responsibly and hold the companies accountable to produce good behavior from their users,” SFMTA spokesperson Paul Rose told TechCrunch.

Here’s a key gist from the ordinance:

The proliferation of [Powered] Scooter Share Programs, which include motorized scooters that can be secured without being locked to a fixed object, has the potential to cause obstructions of public right-of-ways and, in the absence of sufficient education as to existing laws, cause a myriad of other safety hazards for both users of [Powered] Scooters as well as members of the public more generally. The Administrative Code defines a “public nuisance” as any “thing or condition, including but not limited to violations of the Municipal Code or State law, that threatens injury or damage to the health, safety, welfare, or property of members of the public, that obstructs the free use of property of others or of the public right-of-way or commons, or otherwise interferes with the comfortable enjoyment of life or property.”

Following the public comment portion, the committee members had some specific questions for Bird and Spin. Supervisor Kim noted she’s seen several scooters that are tipped over.

“Within the first week, I had seen several that had been pushed over,” Kim said, adding that she’s concerned about safety and the long-term viability of the programs.

In response, Bird Director of Government Affairs Carl Hanson said the company can usually get someone out there within two hours, but Supervisor Kim said that’s too long. In response to a question about proper scooter parking, Hanson said Bird now requires users to take a picture at the end of the ride to prove the scooter is parked properly.

While the SFMTA aims to open up its permitting process early next month, Supervisor Kim said she doesn’t see this working unless docking is in place.

“I don’t think we can permit this until we figure out how to dock them,” Supervisor Kim said.

The SFMTA, however, said the onus is on the companies to ensure proper docking and that it’s willing to work with each company around that process.


Source: TechCrunch

Want to fool a computer vision system? Just tweak some colors

Research into machine learning and the interesting AI models created as a consequence are popular topics these days. But there’s a sort of shadow world of scientists working to undermine these systems — not to show they’re worthless but to shore up their weaknesses. A new paper demonstrates this by showing how vulnerable image recognition models are to the simplest color manipulations of the pictures they’re meant to identify.

It’s not some deep indictment of computer vision — techniques to “beat” image recognition systems might just as easily be characterized as situations in which they perform particularly poorly. Sometimes this is something surprisingly simple: rotating an image, for example, or adding a crazy sticker. Unless a system has been trained specifically on a given manipulation or has orders to check common variations like that, it’s pretty much just going to fail.

In this case it’s research from the University of Washington led by grad student Hossein Hosseini. Their “adversarial” imagery was similarly simple: switch up the colors.

Probably many of you have tried something similar to this when fiddling around in an image manipulation program: by changing the “hue” and “saturation” values on a picture, you can make someone have green skin, a banana appear blue and so on. That’s exactly what the researchers did: twiddled the knobs so a dog looked a bit yellow, a deer looked purplish, etc.

The original images are at left; color-shifted versions and the systems’ best guesses at right.

Critically, however, the “value” of the pixels, meaning how light or dark it is, wasn’t changed, meaning the images still look like what they are — just in weird colors.

But while a cat looks like a cat no matter if it’s grey or pink to us, one can’t really say the same for a deep neural network. The accuracy of the model they tested was reduced by 90 percent on sets of color-tweaked images that it would normally identify easily. Its best guesses are pretty random, as you can see in the figure at right. Changing the colors totally changes the system’s guess.

The team tested several models and they all broke down on the color-shifted set, so it wasn’t just a consequence of this specific system.

It’s not too hard to fix — in this case, all you really need to do is add some labeled, color-shifted images into the training data so the system is exposed to them beforehand. This addition brought success rates back up to reasonable (if still fairly poor) levels.

But the point isn’t that computer vision systems are fundamentally bad at color or something. It’s that there are lots of ways of subtly or not-so-subtly manipulating an image or video that will devastate its accuracy or subvert it.

“Deep networks are very good at learning (or better memorizing) the distribution of training data,” wrote Hosseini in an email to TechCrunch. “They, however, hardly generalize beyond that. So, even if models are trained with augmented data, it’s likely that we can come up with a new type of adversarial images that can fool the model.”

A model trained to catch color variations might still be vulnerable to attention-based adversarial images and vice versa. The way these systems are created and encoded right now simply isn’t robust enough to prevent such attacks. But by cataloguing them and devising improvements that protect against some but not all, we can advance the state of the art.

“I think we need to find a way for the model to learn the concepts, such as being invariant to color or rotation,” Hosseini suggested. “That can save the algorithm a lot of training data and is more similar to how humans learn.”

You can read the full pre-print paper on Arxiv (PDF).


Source: TechCrunch

The White House Loses Rob Joyce and Tom Bossert, Its Cybersecurity Brain Trust

White House cybersecurity coordinator Rob Joyce will follow homeland security advisor Tom Bossert out the door, leaving the Trump administration adrift on cybersecurity policy.
Source: Wired

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