Clemson All-day Dataset (CAD)

Description

This website contains data for 351 people wearing a wrist motion tracker all day during everyday life. Subjects pressed a button to indicate the beginning and end of each eating episode (meal, snack) throughout the day. Button press logs were reviewed with each subject after the day of recording for clarification. A total of 354 days were recorded (a few subjects contributed more than one day each).

Shimmer 3 device (wrist motion) Log of eating episodes

Raw data includes 3-axis accelerometer, gyroscope and magnetometer sensor readings. Linear acceleration has been calculated at each timestep and is available in a second set of files.

For more background see the Eating Detection Project or this paper which fully describes the data collected.

Example

An example of some data is shown in the following figure (click to enlarge). The 6 axes of data from top to bottom are linear acceleration x, y, z, gyroscope yaw, pitch, roll. The vertical lines indicate a period of time reported by the subject as an eating episode, in this case breakfast. The data index and time of day are shown at the top left and right of the display; appx 34 minutes of data are visible in the plot.

Demographics

The demographics for all subjects including handedness can be downloaded here.

Downloads

Data is stored by participant (P####).

Click here to download all the transformed data files (4.6 GB). These contain 3-axis linear acceleration and gyroscope data and were carefully cleaned and resynchronized to exactly 15 Hz. They are stored in a simple binary format to save space. They can be viewed using this program. It includes source code, a compiled Windows binary, and all our classifier models.

Click here to download all the ground truth files. These are based on the button logs provided by subjects and reviewed and cleaned after recording.

The raw CSV files recorded by the Shimmer devices are stored in 5 separate zip files due to their large size (appx 20 GB total). Click here to download set 1 (4.1 GB). Click here to download set 2 (4.0 GB). Click here to download set 3 (4.1 GB). Click here to download set 4 (4.5 GB). Click here to download set 5 (4.3 GB).

Software

Click here for desktop Windows software that visualizes the data and runs all our classifiers on it. Source code is included.

Cafeteria Dataset / Clemson / ahoover@clemson.edu