A Review of Behavioral Analysis-Based Depression Detection Using SVM and KNN Algorithms

Author: Nimisha M. Raval, Ankur J. Goswami, Jayesh M. Mevada
Published Online: January 5, 2026
Abstract
References

Depression, among the widely common psychological ailments across the globe, has a great influence on the psychological well-being of an individual concerning their mood, cognitive functions, and behavioral aspects. Lack of awareness and minimal availability of psychological professionals often create challenges in detecting depression at an earlier stage. From the past few years, the use of Machine Learning and Artificial Intelligence has been identified as a potential way towards detecting depression using behavior pattern identification. It outlines a number of behavioural analysis-based techniques for diagnosing depression, such as those that use social media messaging, speech patterns, EEG signals, and physiological traits. Numerous models based on machine and deep learning approaches, including ensemble algorithms, SVM, KNN, Artificial Neural Networks, and combination models, are discussed in significant research. Along with optimisation techniques like GA and particle swarm optimisation, feature optimisation and its significance are also identified. The current work compares the models, limitations, and data sets created by earlier research studies. The importance and future necessity of an integrated data approach and expert feature selection in the successful detection of depression are finally highlighted by the discussion. This study aims to provide readers with an organized understanding of earlier advancements in intelligent mental health monitoring systems, while also laying the groundwork for future research.

Keywords: Behavioral Analysis, Machine Learning, Depression Detection, Data Sources
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