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Table 5 Number of samples for each activity class at each position after pre-processing

From: The effectiveness of simple heuristic features in sensor orientation and placement problems in human activity recognition using a single smartphone accelerometer

Position: pocket

Position: backpack

Position: hand

Activity name

Sample count

Activity name

Sample count

Activity name

Sample count

Sitting

879,325

Sitting

879,612

Sitting

879,855

Lying

1,266,292

Lying

1,268,078

Lying

1,269,428

Walking

765,246

Walking

765,375

Walking

765,266

Running at 3 METS

984,997

Running at 3 METS

986,512

Running at 3 METS

986,310

Running at 5 METS

986,446

Running at 5 METS

986,064

Running at 5 METS

985,187

Running at 7 METS

992,654

Running at 7 METS

995,726

Running at 7 METS

992,154