User interface

Abstract

This chapter is organised as follows. In Sect. 6.1 we will discuss the differences a mobile interface imposes on the user interaction. We will show how mobile interfaces have changed over the past 20 years and highlight the consequences this has on mobile information access. In the following two sections we go in more details into the two main modalities of interaction: input (Sect. 6.2) and output (Sect. 6.3), reporting research on how Mobile IR makes use of their peculiarities. Section 6.4 addresses the specific issue of query reformulation and finally Sect. 6.5 will report the conclusions of the chapter.