Action-Centered Information Retrieval
This addresses a semantic gap in information retrieval for event-based documents, though it appears incremental as it builds on existing formal methods.
The paper tackles the problem of retrieving documents that describe sequences of events when queries ask about the resulting world state, requiring consideration of implicit and uncertain effects. It proposes an action language formalization and automates the task using Answer Set Programming.
Information Retrieval (IR) aims at retrieving documents that are most relevant to a query provided by a user. Traditional techniques rely mostly on syntactic methods. In some cases, however, links at a deeper semantic level must be considered. In this paper, we explore a type of IR task in which documents describe sequences of events, and queries are about the state of the world after such events. In this context, successfully matching documents and query requires considering the events' possibly implicit, uncertain effects and side-effects. We begin by analyzing the problem, then propose an action language based formalization, and finally automate the corresponding IR task using Answer Set Programming.