The MITRE Multi-Modal Logger: Its Use in Evaluation of Collaborative Systems Samuel Bayer, Laurie E. Damianos, Robyn Kozierok, James Mokwa The MITRE Corporation; 202 Burlington Road; Bedford, MA 01730 interface (i.e., a record of menu selections made and the content of text entry fields), or the application (i.e., a record of actions taken, such as a retrieval of information or a command issued). This information can be used in a number of ways, such as usability testing or statistical adaptation by the system itself. This information can also be collected from a variety of modalities such as text conferencing, image sharing and manipulation, and audio conferencing. HCI also imposes requirements on the structure of the information gathered. For instance, the information is typically gathered for multiple users and multiple interactions with the system in question. As a result, some notion of a "trial" or "session" is important. In addition, each trial might require information to be gathered from multiple components simultaneously. An example of this is when a speech recognizer is used in conjunction with an independent multi-modal system. While there are many tools which address some slice of this problem ([10], [11]), their scope is limited either
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