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In dieser Arbeit wurde am Deutschen Krebsforschungszentrum (DKFZ) in Heidelberg eine Anwendung für das Trainieren von Klassifikatoren, das Klassifizieren und für die Durchführung eines Leave-One-Out-Tests entwickelt. Auf der Grundlage von Methoden aus einem bereits existierenden Programm, das zum automatischen Erkennen von osteolytischen und osteoblastischen Läsionen bei Patienten mit einem multiplen Myelom genutzt wird, wurde eine Benutzeroberfläche implementiert, die das aufwendige und manuelle Anpassen an neue Fragestellungen erleichtern soll. Zusätzlich soll eine Visualisierung von Merkmalen dem Benutzer beim Trainieren eines Klassifikators die Auswahl verdeutlichen und vereinfachen. Damit die Anwendung auch für andere Klassifikationsaufgaben genutzt werden kann, wurde eine Erweiterungsmöglichkeit der grafischen Benutzeroberfläche auf Basis von XML integriert.
Background: An important factor in approaching the challenges of chronic diseases, requiring long-term management and high costs, is the active participation of the patient in the care process. Objectives: Facing the problem of lacking patient-tailored, comprehensive health management software, the aim of this thesis is to generate ideas for a graphical user interface (GUI) to support stroke patients in the management of their individual care process. The objectives are to prototype a GUI for a patient e-service and to evaluate its usefulness and usability with stroke patients. Methods: A scenario-based, user-centered design method was used to envision ideas for the user interface. Static prototypes were realized with the tool Pencil and for the implementation of a dynamic prototype web programming techniques were used. For the evaluation of the prototypes the methods of focus group discussion and cooperative evaluation were applied. Results: The situation of a representative stroke patient and his interaction with the e-service were described in scenarios. Graphical user interfaces of the involved system views were derived from the scenarios and illustrated with static wireframe prototypes. A welcome screen, a care process timeline overview, and a diary with data sharing functionality were designed. The diary functionality was further examined by implementing a prototypical web application. During the evaluation, feedback for further improvements was gathered, and assumptions about the user information and functionality needs could be verified. Conclusion: The developed prototypes represent a suitable graphical user interface and visualizations to support stroke patients in the management of their care process. An overview of appointments on the welcome screen, a diary to document and monitor health, a timeline overview of all time-related health information and a selected sharing functionality were found to be important features of a personal health system for stroke patients.