EXTRACT: Strong Examples from Weakly-Labeled Sensor Data
Name
1609.09196.pdf
Description
Submitted version
Size
1.39 MB
Format
Adobe PDF
Checksum (MD5)
4ca52473f65bcbdf3f43449ed506cd2a
Author(s)
Blalock, Davis W.
Guttag, John V.
Date Issued
December 2016
Publisher
IEEE
Citation
Blalock, Davis W. and Guttag, John V. 2016. "EXTRACT: Strong Examples from Weakly-Labeled Sensor Data."
Version
Original manuscript
Abstract
© 2016 IEEE. Thanks to the rise of wearable and connected devices, sensor-generated time series comprise a large and growing fraction of the world's data. Unfortunately, extracting value from this data can be challenging, since sensors report low-level signals (e.g., acceleration), not the high-level events that are typically of interest (e.g., gestures). We introduce a technique to bridge this gap by automatically extracting examples of real-world events in low-level data, given only a rough estimate of when these events have taken place. By identifying sets of features that repeat in the same temporal arrangement, we isolate examples of such diverse events as human actions, power consumption patterns, and spoken words with up to 96% precision and recall. Our method is fast enough to run in real time and assumes only minimal knowledge of which variables are relevant or the lengths of events. Our evaluation uses numerous publicly available datasets and over 1 million samples of manually labeled sensor data.
MIT Department
Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1109/icdm.2016.0093
