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Classifying human activities through machine learning
Malmö University, Faculty of Technology and Society (TS).
Malmö University, Faculty of Technology and Society (TS).
2018 (English)Independent thesis Basic level (degree of Bachelor), 10 credits / 15 HE creditsStudent thesis
Abstract [sv]

Klassificering av dagliga aktiviteter (ADL) kan användas i system som bevakar människors aktiviteter i olika syften. T.ex., i nödsituationssystem. Med machine learning och bärbara sensor som samlar in data kan ADL klassificeras med hög noggrannhet. I detta arbete, ett proof-of-concept system med tre olika machine learning algoritmer utvärderas och jämförs mellan tre olika dataset, ett som är allmänt tillgängligt på (Ugulino, et al., 2012), och två som har samlats in i rapporten med hjälp av en android enhet. Algoritmerna som har använts är: Multiclass Decision Forest, Multiclass Decision Jungle and Multiclass Neural Network. Sensorerna som har använts är en accelerometer och ett gyroskop. Resultatet visar hur ett konceptuellt system kan byggas i Azure Machine Learning Studio, och hur tre olika algoritmer presterar vid klassificering av tre olika dataset. En algoritm visar högre precision vid klassning av Ugolino’s dataset, jämfört med machine learning modellen som ursprungligen används i rapporten.

Abstract [en]

Classifying Activities of daily life (ADL) can be used in a system that monitor people’s activities for different purposes. For example, in emergency systems. Machine learning is a way to classify ADL with high accuracy, using wearable sensors as an input. In this paper, a proof-of-concept system consisting of three different machine learning algorithms is evaluated and compared between tree different datasets, one publicly available at (Ugulino, et al., 2012), and two collected in this paper using an android device’s accelerometer and gyroscope sensor. The algorithms are: Multiclass Decision Forest, Multiclass Decision Jungle and Multiclass Neural Network. The two sensors used are an accelerometer and a gyroscope. The result shows how a system can be implemented using Azure Machine Learning Studio, and how three different algorithms performs when classifying three different datasets. One algorithm achieves a higher accuracy compared to the machine learning model initially used with the Ugolino data set.

Place, publisher, year, edition, pages
Malmö universitet/Teknik och samhälle , 2018. , p. 58
Keywords [en]
machine learning, activity of daily life, ADL, supervised learning, multiclass decision forest, multiclass decision jungle, multiclass neural network, cross validation, Azure, Android, Java, gyroscope, accelerometer
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:mau:diva-20115Local ID: 28352OAI: oai:DiVA.org:mau-20115DiVA, id: diva2:1479983
Educational program
TS Datateknik och mobil IT
Supervisors
Examiners
Available from: 2020-10-27 Created: 2020-10-27Bibliographically approved

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CiteExportLink to record
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