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While the mechanisms for conveying temporal information in language have been have been extensively studied by linguists, very little of this work has been done in the tradition of corpus linguistics. In this paper we discuss the outcomes of a research effort to build a corpus, called TIMEBANK, which is richly annotated to indicate events, times, and(More)
This paper describes the Second PASCAL Recognising Textual Entailment Challenge (RTE-2). 1 We describe the RTE-2 dataset and overview the submissions for the challenge. One of the main goals for this year's dataset was to provide more " realistic " text-hypothesis examples , based mostly on outputs of actual systems. The 23 submissions for the challenge(More)
In this paper, we report on Qaviar, an experimental automated evaluation system for question answering applications. The goal of our research was to find an automatically calculated measure that correlates well with human judges' assessment of answer correctness in the context of question answering tasks. Qaviar judges the response by computing recall(More)
This paper introduces a set of guidelines for annotating time expressions with a canonicalized representation of the times they refer to. Applications that can benefit from such an annotated corpus include information extraction (e.g., normalizing temporal references for database entry), question answering (answering " when " questions), summarization(More)
The ability to communicate in natural language has long been considered a defining characteristic of human intelligence. Furthermore, we hold our ability to express ideas in writing as a pinnacle of this uniquely human language facility—it defies formulaic or algorithmic specification. So it comes as no surprise that attempts to devise computer programs(More)