Vision-based Spatiotemporal Learning for Human Activity Recognition
Bibliographic record
Abstract
This paper introduces a novel concept for Human Activity Recognition (HAR) that allows robust analysis, classification, and understanding of human movements in various environments. It can be applied in various applications such as Health monitoring and analysis, fitness/dance training and performance analysis, interactive gaming, smart homes, and wearable devices. The novel method, coined as STL-HAR (SpatioTemporal Learning for HAR), learns from sensor data jointly represented in space and time to robustify the HAR process. In the new concept, we propose a hybrid model based on GNN (Graph Neural Network), and LSTM (Long Short-Term Memory). GNN first learns the spatial features from different sensor data locations. The learned features will then be injected to LSTM where the temporal information is captured by observing sensor status at different timestamps. We evaluate and analyze the performance of STL-HAR in real use case scenarios of HAR data compared with baseline HAR-based solutions. STL-HAR has achieved a recognition rate of 92% under different scenarios.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".