Field evaluation of context aware adaptive interfaces for efficient mobile contact retrieval

Our paper discusses the implementation and field evaluation of a context-aware mobile contact retrieval application. We examine the performance of our underlying prediction algorithm in real world conditions and report on the suitability of our hybrid interface design, as a replacement for traditional contact retrieval interfaces (e.g. phonebook and recent call list). We find that users are best served by an alphabetical ordering of prediction matches and show that hybrid interface designs can provide a modest benefit in users' ability to find a contact, in cases of non-successful predictions. We also discuss users' alternative strategies for retrieval in such cases.