| { |
| "model": "pace-cnn", |
| "version": "0.1.0", |
| "format": "pace-cnn-v1", |
| "labels": [ |
| "walking", |
| "walking_upstairs", |
| "walking_downstairs", |
| "sitting", |
| "standing", |
| "laying" |
| ], |
| "input": { |
| "shape": [ |
| 1, |
| 128, |
| 9 |
| ], |
| "layout": "row-major: sample t, then channel c (index t * 9 + c)", |
| "window": 128, |
| "rate_hz": 50, |
| "overlap": 0.5, |
| "channels": [ |
| { |
| "name": "body_acc_x", |
| "unit": "g (1 g = 9.80665 m/s^2)" |
| }, |
| { |
| "name": "body_acc_y", |
| "unit": "g (1 g = 9.80665 m/s^2)" |
| }, |
| { |
| "name": "body_acc_z", |
| "unit": "g (1 g = 9.80665 m/s^2)" |
| }, |
| { |
| "name": "body_gyro_x", |
| "unit": "rad/s" |
| }, |
| { |
| "name": "body_gyro_y", |
| "unit": "rad/s" |
| }, |
| { |
| "name": "body_gyro_z", |
| "unit": "rad/s" |
| }, |
| { |
| "name": "total_acc_x", |
| "unit": "g (1 g = 9.80665 m/s^2)" |
| }, |
| { |
| "name": "total_acc_y", |
| "unit": "g (1 g = 9.80665 m/s^2)" |
| }, |
| { |
| "name": "total_acc_z", |
| "unit": "g (1 g = 9.80665 m/s^2)" |
| } |
| ], |
| "sensor": "6-axis IMU worn at the waist (belt), as in UCI HAR" |
| }, |
| "normalisation": { |
| "rule": "(x - mean) / std per channel", |
| "from": "training subjects of uci-har-v1 (validation excluded)", |
| "mean": [ |
| -0.0004951871815137565, |
| -0.00032817694591358304, |
| -0.00021286075934767723, |
| 0.0005902921548113227, |
| -0.0004714796377811581, |
| -0.00026790332049131393, |
| 0.8028175234794617, |
| 0.02752470225095749, |
| 0.081498883664608 |
| ], |
| "std": [ |
| 0.19266846776008606, |
| 0.1205918937921524, |
| 0.10867609083652496, |
| 0.4066708981990814, |
| 0.3769063949584961, |
| 0.25676658749580383, |
| 0.410501092672348, |
| 0.382828027009964, |
| 0.373470276594162 |
| ] |
| }, |
| "quantisation": { |
| "input_scale": 0.060373175889253616, |
| "input_zero_point": -1, |
| "output_scale": 0.06330011039972305, |
| "output_zero_point": -19, |
| "output": "int8 scores in label order; argmax is the predicted activity" |
| }, |
| "preparation": { |
| "rate_hz": 50, |
| "window": 128, |
| "step": 64, |
| "units": { |
| "acc": "g (1 g = 9.80665 m/s^2)", |
| "gyro": "rad/s" |
| }, |
| "channels": [ |
| "body_acc_x", |
| "body_acc_y", |
| "body_acc_z", |
| "body_gyro_x", |
| "body_gyro_y", |
| "body_gyro_z", |
| "total_acc_x", |
| "total_acc_y", |
| "total_acc_z" |
| ], |
| "steps": [ |
| { |
| "op": "median", |
| "length": 3, |
| "causal": true, |
| "on": "acc and gyro, per axis" |
| }, |
| { |
| "op": "butterworth_lowpass", |
| "order": 3, |
| "cutoff_hz": 20.0, |
| "on": "acc and gyro, per axis", |
| "sos": [ |
| [ |
| 0.6990599365895495, |
| 1.398119873179099, |
| 0.6990599365895495, |
| 1.0, |
| 1.25051643084874, |
| 0.5457233155094577 |
| ], |
| [ |
| 0.7547627247472144, |
| 0.7547627247472144, |
| 0.0, |
| 1.0, |
| 0.5095254494944288, |
| 0.0 |
| ] |
| ] |
| }, |
| { |
| "op": "gravity_separation", |
| "lowpass": { |
| "type": "butterworth", |
| "order": 3, |
| "cutoff_hz": 0.3, |
| "sos": [ |
| [ |
| 0.0003486925369977911, |
| 0.0006973850739955822, |
| 0.0003486925369977911, |
| 1.0, |
| -1.9616121845004821, |
| 0.9630069546484733 |
| ], |
| [ |
| 0.0185029745248923, |
| 0.0185029745248923, |
| 0.0, |
| 1.0, |
| -0.9629940509502154, |
| 0.0 |
| ] |
| ] |
| }, |
| "body_acc": "total_acc - lowpass(total_acc)" |
| }, |
| { |
| "op": "normalise", |
| "rule": "(x - mean) / std per channel, training-subject constants" |
| }, |
| { |
| "op": "quantise", |
| "rule": "round(x / input_scale) + input_zp, clipped to int8" |
| } |
| ], |
| "filter_form": "second-order sections, transposed direct form II, causal; state starts at the steady state of the first sample", |
| "chosen_by_the_zoo": [ |
| "median length 3", |
| "gravity filter order 3", |
| "causal filtering" |
| ] |
| }, |
| "benchmark": "uci-har-v1" |
| } |
|
|
