By Ion Androutsopoulos
Advances in temporal databases make it more and more more uncomplicated to shop time-dependent details, making a want for amenities that may aid end-users entry this knowledge. within the context of usual language interplay, major attempt has been dedicated to interfaces that permit database queries to be formulated in traditional language. lots of the latest interfaces, although, don't aid correctly the idea of time. Drawing upon stressful and element theories, temporal logics, and temporal databases, this cross-discipline publication examines proper concerns from the 3 components, constructing a unified theoretical framework that may be used to construct common language interfaces to temporal databases. The framework positive aspects an HPSG mapping from English to a officially outlined that means illustration language, and a corresponding mapping to a temporal extension of the SQL database language. The ebook is observed by means of a freely on hand prototype interface, equipped in keeping with the framework, and carried out utilizing Prolog and ALE. this can be an in-depth exploration of the inspiration of time in normal language database interfaces. it is going to be quite fascinating to researchers engaged on ordinary language interplay, demanding and element, HPSG, temporal logics, and temporal databases, specially those that desire to know about time-related concerns in different disciplines.
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Extra resources for Exploring time, tense, and aspect in natural language database interfaces
1). 3). 23), are considered. The reader is reminded that assertions are treated as yes/no questions. 23), it is a culminating activity verb. 20) John was running. 21) John ran. 22) John was building a house. 23) John built a house. As will be discussed in later sections, the past continuous sometimes has a future meaning. 21). When applying the imperfective paradox criterion, the past continuous must not have a future meaning. In various forms, the imperfective paradox criterion has been used by Vendler (1967), Vlach (1993), Kent (1993), and others.
The moment at which the flight reaches the gate is considered to be the time when the flight arrived; reaching a location and arriving are modelled as instantaneous. Normally (habitually) each flight arrives at the same gate and time every day. Due to traffic congestion, however, a flight may arrive at a gate or time other than its normal ones. Before taking off, each flight is serviced by a service company. This involves carrying out a specific set of tasks. Unless all tasks have been carried out, the service is incomplete.
Adams arrives. He moves the container. He fixes the engine. This use of the simple present, however, is unlikely in nlitdb questions. 17) does not constitute evidence that to arrive, to move, and to fix are state verbs. 3). , they can only be understood as involving the habitual homonyms of to land and to smoke. 18) Which flight lands on runway 2? 19) Does any doctor smoke? 19) are possible, the habitual homonyms of to land and to smoke are state verbs. 19) do not constitute evidence that the non-habitual homonyms of to land and to smoke are state verbs.
Exploring time, tense, and aspect in natural language database interfaces by Ion Androutsopoulos