David Stephen Hollinger

5 Questions 6 Answers 0 Followers

Questions related from David Stephen Hollinger

What are relevant machine learning evaluation metrics for joint angle predictions during flexion vs. extension?

Hello, I am working on machine learning algorithms using EMG and IMU (Inputs) to map joint angles (outputs). I have used RMSE to evaluate model performance because RMSE penalizes outliers more...

09 February 2022 2,726 3 View

Should you Upsample or downsample data for machine learning?

Hello, I am working on a machine learning project that maps EMG / IMU (input) to predict joint angles (output). However, as I split my data into training and testing sets, my X_train and Y_train...

10 January 2022 5,336 3 View

How to gap fill with extremely high number of trajectories in camera space?

Hi, I am gap-filling motion capture trials using Vicon Nexus. Typically, this is a very straightforward process. However, one of our test subjects is very difficult to gap fill because the marker...

07 June 2021 7,147 3 View

How is data compromised when an EMG sensor falls off during testing? Do you re-place the sensor to the same approximate location and re-run the trial?

The trouble with dynamic biomechanical movement is that fast/abrupt movement can cause a marker or EMG sensor to fall off. It's rare for an EMG sensor to fall off during testing but when it does...

02 September 2020 6,230 5 View

Zero-shot Learning for Human Activity Recognition?

Anyone in biomechanics research involved in human activity recognition? One interesting AI approach is "Few-shot Learning" or "Zero-shot Learning" where a model can identify classes that are...

01 January 1970 4,987 2 View