Genetically optimized Fuzzy C-means data clustering of IoMT-based biomarkers for fast affective state recognition in intelligent edge analytics

• Published in: Applied soft computing Vol. 109; p. 107525
• Main Authors: Kumar, Akshi, Sharma, Kapil, Sharma, Aditi
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2021
• Subjects: Affect; Data clustering; Edge analytics; Genetic algorithms; IoMT; Edge analytics; Affect; Data clustering; IoMT; Genetic algorithms
• ISSN: 1568-4946; 1872-9681
• DOI: 10.1016/j.asoc.2021.107525

IoMT sensors such as wearables, moodables, ingestible sensors and trackers have the potential to provide a proactive approach to healthcare. But grouping, traversing and selectively tapping the IoMT data traffic and its immediacy makes data management & decision analysis a pressing issue. Evidently, the selection process for real-world, time-constrained health problems involves looking at multivariate time-series data generated simultaneously from various wearables resulting in data overload and accuracy issues. Computational intelligence of edge analytics can extend predictive capability by quickly turning digital biomarker data into actions for remote monitoring and trigger alarm during emergency incidents without relying on backend servers. But the pervasive generation of data streams from IoMT levies significant issues in data visualization and exploratory data analysis. This paper presents a genetically optimized Fuzzy C-means data clustering technique for affective state recognition on the edge. Clustering segregates the biomarker data in chunks and generates a summarized data for each subject which is then genetically optimized to avoid stagnation in local optima. A multi-level convolution neural network is finally used to classify the affective states into the baseline, stress and amusement categories. The model is evaluated on the publicly available WESAD dataset and compares favorably to state-of-the-art with less time complexity. It demonstrates the use of data clustering technique for numerosity reduction of real-time data streams in intelligent edge analytics which facilitates fast analysis of affective state of the user. •Continuous IoMT-based data analysis showcasing computational intelligence on the edge.•Extending predictive capabilities for turning digital biomarker data into actions.•Optimized Fuzzy C-means data clustering for data summarization.•Deep hierarchical model for affective state detection on edge using optimized data.•Validated on publicly available WESAD dataset IoMT biomarker data•Compares favorably to state-of-the-art with less time complexity.