Connect with us

Gadgets

How machine learning systems sometimes surprise us – TechCrunch

Published

on

This simple spreadsheet of machine learning foibles may not look like much but it’s a fascinating exploration of how machines “think.” The list, compiled by researcher Victoria Krakovna, describes various situations in which robots followed the spirit and the letter of the law at the same time.

For example, in the video below a machine learning algorithm learned that it could rack up points not by taking part in a boat race but by flipping around in a circle to get points. In another simulation “where survival required energy but giving birth had no energy cost, one species evolved a sedentary lifestyle that consisted mostly of mating in order to produce new children which could be eaten (or used as mates to produce more edible children).” This led to what Krakovna called “indolent cannibals.”

It’s obvious that these machines aren’t “thinking” in any real sense but when given parameters and a the ability to evolve an answer, it’s also obvious that these robots will come up with some fun ideas. In other test, a robot learned to move a block by smacking the table with its arm and still another “genetic algorithm [was] supposed to configure a circuit into an oscillator, but instead [made] a radio to pick up signals from neighboring computers.” Another cancer-detecting system found that pictures of malignant tumors usually contained rulers and so gave plenty of false positives.

Each of these examples shows the unintended consequences of trusting machines to learn. They will learn but they will also confound us. Machine learning is just that – learning that is understandable only by machines.

One final example: in a game of Tetris in which a robot was required to “not lose” the program pauses “the game indefinitely to avoid losing.” Now it just needs to throw a tantrum and we’d have a clever three-year-old on our hands.

Source link



Check Also




I’ll admit that I’ve been caught up in the Bose hype. I’ve worn Bose headphones …

Source link

Continue Reading
Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Gadgets

Continuous scrolling comes to mobile Google Search

Published

on

Enlarge / See that spinny thing at the bottom of the page? It’s going to load more search results any second now…

Google

Google is rolling out a big update to mobile search today: continuous scrolling.

Now, instead of making you tap to load the next page after your usual 10 links of search results, Google will just load the next page.

The company hopes that continuous scrolling will get people to look at more search results and that a longer supply of results is better for more open-ended search questions. The blog post notes that “most people who want additional information tend to browse up to four pages of search results.” If you search on your phone, you’ll find that continuous scrolling lasts for exactly four pages before the familiar “show more” link pops up. When Google automatically loads the next page, it also sticks an ad before the next page of search results.

Google said that “this new Search experience is starting to gradually roll out today for most English searches on mobile in the US.” It seems to work on the Google Search app and the website.

Listing image by Sean Gallup | Getty Images

Continue Reading

Gadgets

Fixes for AMD Ryzen performance, other Windows 11 issues rolling out to testers now

Published

on

Enlarge / A PC running Windows 11.

Microsoft

Now that Windows 11 is out, the arduous process of fixing the new operating system’s bugs can begin. The OS got its first Patch Tuesday update earlier this week, and now another update is rolling out to Windows Insiders in the Beta and Release Preview channels. It fixes a long list of early problems with Windows 11.

The headliner here is a fix for a problem affecting L3 cache latency on AMD Ryzen processors. According to AMD, the bug can reduce performance by 3–5 percent. The Windows 11 update released earlier this week may have actually made the problem worse, but at least a fix is imminent.

The L3 latency bug is one of a pair of problems that AMD identified with Windows 11 earlier this month. The other Windows 11 problem AMD identified, which can prevent high-core-count, high-wattage Ryzen chips from correctly assigning work to the processor’s fastest individual cores, will be fixed via an AMD driver update.

The Release Preview Insider channel is usually a Windows update’s last stop before public distribution. A post shared on Reddit suggests that the Windows update is being targeted for release on Tuesday, October 19th, while the AMD driver update for the other problem should be released two days later, on the 21st.

Other bugs addressed in the Windows 11 update include one that prevented some upgraders from seeing the new Taskbar or using the Start menu, a PowerShell bug that can fill up a storage volume with “an infinite number of child directories” when you try to move a directory into its own child directory, and a number of problems that could cause freezes, crashes, and slowdowns.

Continue Reading

Gadgets

MacBook Pros, an “M1X” chip, and other stuff to expect at Apple’s October event

Published

on

Enlarge / Apple could be getting ready to show us the next stage of the MacBook Pro’s development.

Another month, another Apple event. Fresh off a September event that delivered new updates for the entire iPhone lineup, some new iPads, and a gently tweaked Apple Watch, Apple is preparing for another event on Monday, October 18. And this time, we’re expecting the company to focus on the Mac, which is still in the middle of a transition from Intel chips to the Apple Silicon chips that are making new Macs feel exciting and important in a way they haven’t in years.

We’ll be following along live starting at 10 am Pacific on Monday, but in the meantime, we’ve gathered all the current rumors and put together a list of things we’re most likely to see (as well as one or two things that aren’t as likely). The short version is that Apple should finally be gearing up to show us high-performance Apple Silicon chips.

The “M1X” chip, or whatever it’s called

Just as the MacBook Air, the newest 13-inch MacBook Pro, the Mac mini, and the 24-inch iMac all use the same M1 chip, we expect the next round of Macs to share the same silicon as well. Commonly referred to as the “M1X,” the chip’s exact specifications are a bit of a mystery, since Apple’s chip designs are among its best-kept secrets. But it’s not hard to guess the general gist of what we’ll be getting—new chips that improve upon the performance of the Intel processors they’re replacing while also enabling a dramatic increase in battery life. Recent Intel MacBook refreshes have struggled to provide one or the other of these things, but the M1 Macs managed to do both.

To replace the higher-end Intel Macs, the M1X will need to have just a bit more of everything compared to the M1: more processor cores, more GPU cores, and support for more monitors and Thunderbolt and USB ports. Without adapters or docks, the M1 can drive only two screens at once, including the computer’s internal display. We’d also expect configurations with more than 16 GB of RAM, the current maximum for M1 Macs.

A report from late last year suggested that a higher-performance chip destined for the MacBook Pros could include as many as 16 of Apple’s performance cores, though more recent reporting suggests we could be looking at a chip with eight performance cores and two low-power efficiency cores. Even eight performance cores should be able to outpace the 4-, 6-, 8-, and 10-core processors in today’s Intel Macs. The M1X will also reportedly be available with either 16 or 32 GPU cores, compared to the seven or eight GPU cores included in the standard M1 (Apple could also improve graphics performance by increasing memory bandwidth, as it has done in some older iPad processors, but we haven’t heard anything specific about that).

New MacBook Pros

New MacBook Pros that replace the four-port 13-inch MacBook Pro and the 16-inch MacBook Pro are the thing we’re most likely to get out of Monday’s event.

Apple’s first few Apple Silicon Macs were very conservative from a design standpoint—the MacBook Air, two-port MacBook Pro, and Mac mini all put new guts into computers that looked identical to the ones they were replacing. But the new MacBook Pros could be a bit more adventurous, in the vein of the 24-inch iMac.

For example, persistent rumors claim that the 13-inch MacBook Pro could become a 14-inch MacBook Pro. And breadcrumbs left in some macOS betas suggest that Apple is working on laptops with higher-resolution screens that could obviate the need for the scaled, non-native resolution that all current MacBooks use out of the box. With a more efficient chip, Apple could also take the opportunity to shrink the 16-inch MacBook Pro’s huge 100 WHr battery, reducing the 4.3-pound laptop’s size and weight. Other improvements could include more energy-efficient mini LED backlighting for the displays and possibly even a 120 Hz refresh rate (the reporting for the 120 Hz refresh rate is thin, but it would dovetail nicely with macOS Monterey’s support for external monitors with variable refresh rates).

Other rumors suggest that Apple will walk back some of the more controversial changes made to the MacBook Pro back in 2016, the last time the laptops got a comprehensive overhaul. Alleged schematics from earlier this year suggest that the MagSafe power connector could make a return, along with a full-size HDMI port and an SD card slot. These changes would reduce the number of Thunderbolt ports to three, but having a few kinds of ports would still make the laptops more convenient to use, on balance, for people who frequently use external displays or SD cards. The Touch Bar may also be removed in favor of a physical row of function keys.

A faster Mac mini

The 2020, M1-equipped Apple Mac mini.

The 2020, M1-equipped Apple Mac mini.

Samuel Axon

We’d say the new MacBook Pros are pretty much a sure thing, but there are a couple of less-likely-but-still-possible Mac refreshes Apple could introduce.

Apple already has an Apple Silicon Mac mini, but you may have noticed that the company continues to sell a version of the 2018 Intel Mac mini with more ports and up to 64GB of RAM. Recent rumors suggest that Apple could replace this machine with a sort of “Mac mini Pro,” which would leverage the M1X’s improved performance and expanded connectivity. The current Apple Silicon Mac mini is great for basic use or even light photo and video editing, but an M1X Mac mini would be a better workstation for code compilation or professional video editing, tasks that generally take advantage of all of the processing performance they can get.

Continue Reading

Trending