Researchers Struggle to Use Apple Watch in Studies Due to Sudden Algorithm Changes
Researchers are rethinking plans to use the Apple Watch in studies after finding inconsistencies in the data gathered by the device (via The Verge).
Inconsistencies in the Apple Watch's heart rate variability data are reportedly caused by Apple tweaking the device's algorithms, meaning that data from the same time period can change without warning. Associate professor of biostatistics at the Harvard T.H. Chan School of Public Health and developer of the Beiwe data platform, J.P. Onnela, told The Verge:
These algorithms are what we would call black boxes — they're not transparent. So it's impossible to know what's in them.
Research fellows at Brigham and Women's Hospital exported the heart rate data from Apple Watches for the same period of time, but several months apart. The data should have been identical, but since it is filtered through an algorithm prior to export it was drastically different.
Apple changes its algorithms regularly and without warning, so exporting the same data at different times may use different algorithms. Beyond heart rate variability, researchers looking into sleep tracking have experienced similar problems with changes to algorithms.
This mostly precludes commercial devices from being used by researchers, resulting in the need for devices specifically designed to collect data for scientific studies. While this is adequate for some studies, it heavily constrains research into the medical value of commercially available products for users. Some researchers say that Apple should publicize the changes it makes to algorithms or make the Apple Watch's raw data available.
Popular Stories
Apple released iOS 18.2 in the second week of December, bringing the second round of Apple Intelligence features to iPhone 15 Pro and iPhone 16 models. This update brings several major advancements to Apple's AI integration, including completely new image generation tools and a range of Visual Intelligence-based enhancements. Apple has added a handful of new non-AI related feature controls as...
Wednesday December 18, 2024 11:39 am PST by
Juli CloverApple is no longer planning to launch a hardware subscription service that would let customers "subscribe" to get a new iPhone each year, reports Bloomberg's Mark Gurman.
Gurman first shared rumors about Apple's work on a hardware subscription service back in 2022, and at the time, he said that Apple wanted to develop a simple system that would allow customers to pay a monthly fee to gain...
Contrary to recent reports, the iPhone 17 Pro will not feature a horizontal camera layout, according to the leaker known as "Instant Digital."
In a new post on Weibo, the leaker said that a source has confirmed that while the appearance of the back of the iPhone 17 Pro has indeed changed, the layout of the three cameras is "still triangular," rather than the "horizontal bar spread on the...
Wednesday December 18, 2024 10:05 am PST by
Juli CloverElevation Lab today announced the launch of TimeCapsule, an innovative and simple solution for increasing the battery life of Apple's AirTag.
Priced at $20, TimeCapsule is an AirTag enclosure that houses two AA batteries that offer 14x more battery capacity than the CR2032 battery that the AirTag runs on. It works by attaching the AirTag's upper housing to the built-in custom contact in the...
The current Apple TV 4K was released more than two years ago, so the streaming device is becoming due for a hardware upgrade soon. Fortunately, it was recently rumored that a new Apple TV will launch at some point next year.
Below, we recap rumors about the next-generation Apple TV.
Bloomberg's Mark Gurman last week reported that Apple has been working on its own combined Wi-Fi and...
Blackmagic today announced that its URSA Cine Immersive camera is now available for pre-order, with deliveries set to start late in the first quarter of 2025. Blackmagic says that this is the world's first commercial camera system designed to capture 3D content for the Vision Pro.
The URSA Cine Immersive camera was first introduced in June, but it has not been available for purchase until...
Apple launched the controversial "trashcan" Mac Pro eleven years ago today, introducing one of its most criticized designs that persisted through a period of widespread discontentment with the Mac lineup.
The redesign took the Mac Pro in an entirely new direction, spearheaded by a polished aluminum cylindrical design that became unofficially dubbed the "trashcan" in the Mac community. All of ...
Apple is planning a series of "major design" and "format changes" for iPhones over the next few years, according to The Wall Street Journal's Aaron Tilley and Yang Jie.
The paywalled report published today corroborated the widely-rumored "iPhone 17 Air" with an "ultrathin" design that is thinner than current iPhone models. The report did not mention a specific measurement, but previous...
