Test method development by use of SOM-GRNN

University essay from KTH/Fordonsdynamik

Author: Yihao Tang; Hui Zhu; [2018]

Keywords: Objective metrics; subjective assessments; correlations; CAE simulation; SOMGRNN; first impression test; user interface; Objektiv mätvärden; subjektiv bedömning; korrelationer; CAE-simulering; SOM-GRNN; första intryckstest; användargränssnitt;

Abstract: The relationship between Objective Metrics (OM) and Subjective Assessments (SA) has been analyzed by people using different methods. This paper continues Gaspar Gil Gómez’s research over test method development by use of SOM-GRNN, aiming to find correlations between OM and SA. In this paper, CAE simulation is performed to analyze the relationship between OM and vehicle parameters. First impression test is refined and one more dataset has been added in order to populate SOM-GRNN map. This paper also conducts analysis over SOM and GRNN algorithms, and explores several possible applications using SOM-GRNN map. Finally the whole SOM-GRNN system is integrated and a User Interface is built in GUI for future research and application. The system can still be improved by populating database, refining SA evaluation method and optimizing SOM-GRNN training algorithms.

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