IVE (Integrated Interactive Information Visualization Environment) is an interactive tool for visual analysis of data from usability studies. The idea of the tool is to allow the usability expert to analyze the data from the usability study in an easier way than without this tool. Traditionally, usability studies are analyzed using spreadsheet software with the aim of statistical evaluation. Alternatively, tools
like Techsmith Morae are used to observe user interaction and find usability issues. IVE takes best from both, it tries to give to usability expert the power of
qualitative analysis tool to understand user behavior but it also allow calculation of statistics. The IVE tool is based on the structure of Information Visualization Reference Model , see Fig. 1. This model represents framework suitable for implementation of various information visualization applications. While IVE
is focused on visualization of data from usability studies we can limit the data source (DataSource and DataSet in Fig. 1) to data types typical for usability study. Detailed
description of supported data types and data handling is in section IV.B. On the other hand we cannot limit the amount of visualizations so we created API (Application
Programming Interface) for access to IVE DataSet so it is possible to implement new visualizations. Details about IVE visualization plug-ins are in section IV.C.