Overview

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About

This is the download site for ALKAN dataset: a large-scale activity data with mobile sensor devices obtained from iPodTouch with accelerometers. We gathered over 35,000 activity data points from more than 200 people over approximately 13 months (the data includes more than that).

Download

You can get the files by month from the files tab or here:
http://redmine.sozolab.jp/projects/alkan/files

Citation

Directory structure

The directory name is YYYYMMDDhhmmss_(userID)_(hash), but old ALKAN data is YYYYMMDDhhmmss_(userID).
Data directory includes info.xml, "acc" and "gyro". "gyro" is new client only.
Each info.xml includes user data, action data,times and device data.
"acc" includes 1.csv. 1.csv is accelerometer data.
"gyro" includes 1.csv. 1.csv is gyro data.

XML structure

All data have info.xml.
info.xml includes user data, action data,times and device data.
  • Times are client clock time, not server clock time.
<?xml version="1.0" encoding="UTF-8" ?>
<Responses>
<User>
<ID>User ID</ID>
</User>
<Action>
<ID>Action ID</ID>
<Name>Action name(walk, running,...)</Name>
</Action>
<Times>
<Start>Start time(YYYY-MM-DD hh:mm:ss)</Start>
<Finish>Finish time(YYYY-MM-DD hh:mm:ss)</Finish>
</Times>
<Devices>
<Device>
<Model>Model name(i Pod Touch, iPhone,...)</Model>
<Client>Client name</Client>
<Position>
<ID>Position ID</ID>
<Name>Position name(hand bag, left hand,...)</Name>
</Position>
<Sensors>
<Sensor>
<Type>Sensor type(acc or gyro)</Type>
</Sensor>
...
</Sensors>
</Device>
</Devices>
</Responses>

CSV structure

Accelerometer

The first line is header, but old data haven't header.

time(sec), acc_x, acc_y,acc_z
0.420,0.12679,-0.32602,-0.88750
0.421,0.09056,-0.32602,-0.97806
0.428,0.00000,-0.27168,-0.79694
0.429,0.19923,-0.32602,-1.01428
.....

Gyro

New ALAKAN2 client can collect gyro data.
First line is header. All gyro data have header.

time(sec), gyro_x, gyro_y,gyro_z
0.420,0.12679,-0.32602,-0.88750
0.421,0.09056,-0.32602,-0.97806
0.428,0.00000,-0.27168,-0.79694
0.429,0.19923,-0.32602,-1.01428
.....