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Assisting users with to-do lists presents new challenges for intelligent user interfaces. This paper presents a detailed analysis of to-do list entries jotted by users of a system that automates tasks for users that we would like to extend to assist users with their to-do entries. We also present four distinct stages of interpretation of to-do entries that can be accomplished and evaluated separately. A system that has good performance in any of these four stages can provide intelligent assistance that is useful to users. Author Keywords User interfaces, to-do lists, automated assistance, natural language interpretation, knowledge acquisition, knowledge collection from web volunteers, office assistants. ACM Classification Keywords H5.m. Information interfaces and presentation (e.g., HCI):
Gil et al. (Sun,) studied this question.