Ron Zacharski

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While relational databases have become critically important in business applications and web services, they have played a relatively minor role in scientific computing, which has generally been concerned with modeling and simulation activities. However, massively parallel database architectures are beginning to offer the ability to quickly search through(More)
Pronouns without explicit noun phrase antecedents pose a problem for any theory of reference resolution. We report here on an empirical study of such pronouns in the Santa Barbara Corpus of Spoken American English, a corpus of spontaneous, casual conversation. Analysis of 2,046 third person personal pronouns in fourteen transcripts indicates that 330 (or(More)
This paper describes Expedition, an environment designed to facilitate the quick ramp-up of MT systems from practically any alphabetic language (L) into English. The central component of Expedition is a knowledge-elicitation system that guides a linguistically naive bilingual speaker through the process of describing L in terms of its ecological,(More)
This paper reports on a study of pronouns this, that, and it in articles in the New York Times, testing the following hypotheses: (1) the pronoun it requires its referent to be in the addressee's focus of attention; demonstrative pronouns only require activation; (2) the anaphoric relation between it and its antecedent tends to be direct (co­referential);(More)
This paper reports on a study of pronominal and demonstrative indirect anaphors in English naturally occurring discourse. We show that only a small percentage of such forms meet the conditions for appropriate use encoded in the Givenness Hierarchy of Gundel, Hedberg and Zacharski (1993), and argue that they should be treated as minor violations which the(More)
The topic of mood and modality (MOD) is a difficult aspect of language description because, among other reasons, the inventory of modal meanings is not stable across languages, moods do not map neatly from one language to another, modality may be realised morphologically or by free-standing words, and modality interacts in complex ways with other modules of(More)
Within the Givenness Hierarchy framework of Gundel, Hedberg, and Zacharski (1993), lexical items included in referring forms are assumed to conventionally encode two kinds of information: conceptual information about the speaker's intended referent and procedural information about the assumed cognitive status of that referent in the mind of the addressee,(More)
This paper presents necessary and sufficient conditions for the use of demonstrative expressions in English and discusses implications for current discourse processing algorithms. We examine a broad range of texts to show how the distribution of demonstrative forms and functions is genre dependent. This research is part of a larger study of anaphoric(More)