Sponsored Links

Android Wear 2.0 uses offline AI for its smart replies

To avoid cloud computing, Google's algorithms run on your smartwatch's hardware.
Android Wear 2.0 uses offline AI for its smart replies
Steve Dent
Steve Dent|@stevetdent|February 10, 2017 10:17 AM

One of the new features on Android Wear 2.0 is Smart Reply, which suggests responses to messages that you can quickly tap if you're busy doing something else. In its research blog, Google explained that the feature uses on-device machine intelligence, so it works even if you don't have an internet cloud connection. While the researchers initially thought doing that would be impossible, the "Expander" AI team saw it as a unique opportunity.

"[We] returned to the drawing board to design a completely new, lightweight, machine learning architecture -- not only to enable Smart Reply on Android Wear, but also to power a wealth of other on-device mobile applications," the team wrote.

It tried using current neural net tech and so-called graph learning, but the models didn't fit on a smartwatch and attempts to limit the number of replies "did not produce useful results," they wrote. In an attempt to make it more compact, the researchers built a simpler system that groups messages requiring a similar responses, like "Hey, how's it going?" and "How's it going buddy," rapidly and with a low memory hit.

Turn on browser notifications to receive breaking news alerts from Engadget
You can disable notifications at any time in your settings menu.
Not now

From there, it uses "semi-supervised graph learning" that checks your replies to messages, word and phrase similarity and other factors to predict the best possible replies. The entire model, including the training, resides and performs "completely on device," the team notes. "The model can also be adapted to cater to the user's writing style and individual preferences to provide a personal experience."

The researchers were surprised at how well it works on Android Wear devices, which aren't renowned as computing powerhouses, and plans to use the AI algorithms behind it to "enable completely new applications in the months to come." As with Google's very similar Gmail-based smart replies, however, be sure to only use it when needed -- even with AI smarts, the person on the other end can tell it's not you.

All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission. All prices are correct at the time of publishing.
Android Wear 2.0 uses offline AI for its smart replies