no code implementations • 20 Jan 2023 • Pekka Siirtola, Juha Röning
As a main result of this article, it is shown that feature relevance analysis cannot only be used to detect the concept drift but also to explain the reason for the drift when a limited number of typical reasons for the concept drift are predefined.
no code implementations • 26 Aug 2021 • Lam Huynh, Tri Nguyen, Thu Nguyen, Susanna Pirttikangas, Pekka Siirtola
Smartwatches have rapidly evolved towards capabilities to accurately capture physiological signals.
no code implementations • 29 May 2019 • Pekka Siirtola, Heli Koskimäki, Juha Röning
In this study, a novel method to obtain user-dependent human activity recognition models unobtrusively by exploiting the sensors of a smartphone is presented.
no code implementations • 29 May 2019 • Pekka Siirtola, Heli Koskimäki, Juha Röning
At first, the recognition is based on user-independent model.
no code implementations • 28 May 2019 • Pekka Siirtola, Heli Koskimäki, Juha Röning
Inertial sensor data from three body positions are used, and the classification is based on Learn++ ensemble method.
no code implementations • 28 May 2019 • Pekka Siirtola, Jukka Komulainen, Vili Kellokumpu
This work investigates how context should be taken into account when performing continuous authentication of a smartphone user based on touchscreen and accelerometer readings extracted from swipe gestures.