Combining neural networks for gait classification

Sen Koktas, Nigar
Yalabik, Nese
Yavuzer, Gunes
Gait analysis can be defined as the numerical and graphical representation of the mechanical measurements of human walking patterns and is used for two main purposes: human identification, where it is usually applied to security issues, and clinical applications, where it is used for the non-automated and automated diagnosis of various abnormalities and diseases. Automated or semi-automated systems are important in assisting physicians for diagnosis of various diseases. In this study, a semi-automated gait classification system is designed and implemented by using joint angle and time-distance data as features. Multilayer Pereeptrons (MLPs) Combination classifiers are used to categorize gait data into two categories; healthy and patient with knee osteoarthritis. Two popular approaches of combining neural networks are experimented and the results are compared according to different output combining rules. In the first one, same set is used to train all networks and afterwards the features are decomposed into five different sets. These two experiments show that using entire data set produces more accurate results than using decomposed data sets, but complexity becomes an important drawback. However, when a proper combining rule is applied to decomposed sets, results are more accurate than entire set. In this experiment sum rule produces better results than majority vote and max rules as an output combining rule.


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Koktas, Nigar Sen; Yalabik, Nese; Yavuzer, Gunes (2006-12-16)
Automated or semi-automated gait analysis systems are important in assisting physicians for diagnosis of various diseases. The objective of this study is to discuss ensemble methods for gait classification as a part of preliminary studies of designing a semi-automated diagnosis system. For this purpose gait data is collected from 110 sick subjects (having knee Osteoarthritis (OA)) and 91 age-matched normal subjects. A set of Multilayer Perceptrons (MLPs) is trained by using joint angle and time-distance par...
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n the past few years, automatically generating descriptions for images has attracted a lot of attention in computer vision and natural language processing research. Among the existing approaches, data-driven methods have been proven to be highly effective. These methods compare the given image against a large set of training images to determine a set of relevant images, then generate a description using the associated captions. In this study, the authors propose to integrate an object-based semantic image r...
Citation Formats
N. Sen Koktas, N. Yalabik, and G. Yavuzer, “Combining neural networks for gait classification,” PROGRESS IN PATTERN RECOGNITON, IMAGE ANALYSIS AND APPLICATIONS, PROCEEDINGS, pp. 381–388, 2006, Accessed: 00, 2020. [Online]. Available: