Yoko MIZUTA

International Christian University, Psychology and Linguistics, Faculty Member

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Papers by Yoko MIZUTA

English Present Perfect Revisited: - A Unified Semantics as a Tense and a Lower-Level Ambiguity Represented in DRT

In this paper, I propose a systematic account of the semantics of English present perfect (PresPe... more In this paper, I propose a systematic account of the semantics of English present perfect (PresPerf) from both empirical and formal perspectives. I incorporate the insights of an extended now (XN) analysis ([1]) into the dynamic semantics framework, DRT ([2]). I demonstrate that PresPerf is licensed by its relation to an XN interval and that different readings are attributed to the specific way that the embedded eventuality interacts with an XN. I provide the semantics of PresPerf compositionally in terms of a general component attributed to have + en and specific conditions attributed to adverbials and verb semantics. In addition, I characterize PresPerf as a tense by showing that the XN interval serves as "temporal location" ([3]), a determinant of tense. An alleged connection between PresPerf and a perfect state is only entailed in the case of events.

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Nominal-Predicate Sentences of Rhetorical Nature

大阪大学言語文化学, Mar 31, 1996

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An Analysis of Japanese ta / teiru in a Dynamic Semantics Framework and a Comparison with Korean Temporal Markers a nohta / a twuta

Pacific Asia Conference on Language, Information, and Computation, Dec 1, 2004

In this paper I will shed new light on the semantics of Japanese tense-aspect markers ta and teir... more In this paper I will shed new light on the semantics of Japanese tense-aspect markers ta and teiru from dynamic semantics and contrastive perspectives. The focus of investigation will be on the essential difference between ta and teiru used in an aspectual sense related to a perfect. I analyze the asymmetry between ta and teiru with empirical data and illustrate it in the DRT framework (Discourse Representation Theory: Kamp and Reyle (1993)). Defending the intuition that ta and teiru make respectively an eventive and a stative description of eventualities, I argue that ta is committed to an assertion of the triggering event whereas teiru is not. In the case of teiru, a triggering event, if there is any, is only entailed. In DRT, ta and teiru introduce respectively an event and a state as a codition into the main DRS. Teiru may introduce a triggering event only as a codition in an embedded DRS. I also illustrate how the proposed analysis of the perfect meaning fits into a more general scheme of ta and teiru. and analyze ta and teiru in a discourse. Furthermore, in DRT terms, I will compare Japanese ta / teiru with Korean perfect-related temporal markers a nohta / a twuta in light of .

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A discourse semantic analysis of tense and aspect in English and Japanese

UMI Dissertation Services eBooks, 2003

Semantic Wiki as a Light-Weight Metadata Management System

For the development of technologies for Semantic Web, machine-understandable metadata such as RDF... more For the development of technologies for Semantic Web, machine-understandable metadata such as RDF is essential. Constructing RDF triples in a Wiki environment can be done by enabling the writing of labeled links. The labeled link represents the RDF property that links the RDF subject with its object. In a Semantic Wiki environment, users can write and edit RDF triples even though users have no knowledge about it. Semantic Wiki can be used for lightweight metadata management, and is useful to bridge the gap between non-technical users and Semantic Web technology.

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The Interpretation of the Reference of “Now” in Written Messages: An Experimental View

Philosophy Study, Aug 28, 2017

The semantics of pure indexicals "I," "here," and "now" has been discussed in the area of philoso... more The semantics of pure indexicals "I," "here," and "now" has been discussed in the area of philosophy of language. According to David Kaplan, in face-to-face communication, "I," "here," and "now" refer respectively to the agent, the place, and the time of the context of utterance. In recorded and written messages, however, the identification of pure indexical references is nontrivial, given that there is a gap between the time of utterance and that of interpretation. In the literature, four major views are proposed from a philosophical perspective. While these are theoretically competing, no empirical data or pragmatic analyses have been provided. How is the reference of "now" in written messages interpreted? Which views proposed in the literature are supported empirically? This paper investigates these questions from experimental and pragmatic perspectives.

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Semantics and Pragmatics of Pure Indexical Reference

Journal of Cognitive Science, 2019

proposed a semantic theory of pure indexicals, arguing that "I," "here," and "now'' refer respect... more proposed a semantic theory of pure indexicals, arguing that "I," "here," and "now'' refer respectively to the agent, the place, and the time of the context of utterance. He focused on real-time, face-to-face communication, assuming "proper utterances," that is, those utterances in which the agent is located in the place and time of the context of utterance. Kaplan claimed that in proper utterances the proposition "I am here now" is logically true, that is, true in every context of utterance. In the past few decades, the semantics of pure indexicals has been discussed beyond the scope of the work of Kaplan. Recorded and written messages are now a central concern of the literature and the logical truth of "I am here now" needs to be reexamined. In these messages, pure indexical references are to be communicated through the discrepancy between the spatial and temporal locations that the speaker and the hearer are in. In the literature, factors such as the speaker's intention and social conventions have been mentioned as playing a key role in the identification of pure indexical references. However, the relation between these factors has been left unclear. Also, it remains to be clarified whether or not Kaplan's semantic theory needs to be modified in order to accommodate the cases of recorded and written messages. This paper investigates the identification of pure indexical references from both semantic and pragmatic perspectives. It presents a theory which involves a minimum extension of Kaplan's theory, introducing the notion of the "salient context of utterance." Specifically, this paper argues the following: 1) it proposes a semantic theory which claims that "I," "here," and "now'' refer respectively to the agent, the place, and the time of the pragmatically determined salient context of utterance, 2) it argues that "I am here now" is true in every salient context of utterance and provides a solution to the so-called "answering machine paradox,"

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A Mental Spaces Analysis of the Answering Machine Paradox: The Agent of the Context of Utterance Revisited

Journal of Cognitive Science, 2015

claims that sentence P (I am here now) is logically true -i.e. true in every context of utterance... more claims that sentence P (I am here now) is logically true -i.e. true in every context of utterance. Its negation ~P (I am not here now) would then be logically false. , however, argued that ~P uttered in a voice message apparently stands for a true proposition. In the literature, this puzzle is called the Answering Machine Paradox (AMP) and has received the continuous attention of philosophers. Some scholars identify the reference of 'I' in the recording context. Others argue that the reference of 'I' is determined by elements such as the speaker's intention, the linguistically competent and attentive audience, and the convention in which an answering machine is used. In any case, previous works hold, just like Kaplan, that the agent of ~P (and P) should be an individual and therefore that there is no agent in the playback context. In this position, the case of AMP would then be dismissed as an 'improper utterance', which goes beyond the scope of Kaplan's theory. This paper provides a novel analysis of this philosophical issue from a cognitive scientific perspective, using the mental spaces framework. AMP is explained in two steps. The key proposal made in the first step is to introduce the agent of the utterance with one's logical identity but without his/her physical identity (Agent_log). This notion of Agent_log is given a theoretical basis in terms of a cognitive blend of mental spaces. In the second step, the

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English Present Perfect Revisited

New Frontiers in Artificial Intelligence, 2007

In this paper, I propose a systematic account of the semantics of English present perfect (PresPe... more In this paper, I propose a systematic account of the semantics of English present perfect (PresPerf) from both empirical and formal perspectives. I incorporate the insights of an extended now (XN) analysis ([1]) into the dynamic semantics framework, DRT ([2]). I demonstrate that PresPerf is licensed by its relation to an XN interval and that different readings are attributed to the specific way that the embedded eventuality interacts with an XN. I provide the semantics of PresPerf compositionally in terms of a general component attributed to have + en and specific conditions attributed to adverbials and verb semantics. In addition, I characterize PresPerf as a tense by showing that the XN interval serves as ”temporal location” ([3]), a determinant of tense. An alleged connection between PresPerf and a perfect state is only entailed in the case of events.

Zone identification in biology articles as a basis for information extraction

Proceedings of the International Joint Workshop on Natural Language Processing in Biomedicine and its Applications - JNLPBA '04, 2004

Information extraction (IE) in the biomedical domain is now regarded as an essential technique fo... more Information extraction (IE) in the biomedical domain is now regarded as an essential technique for the dynamic management of factual information contained in archived journal articles and abstract collections. We aim to provide a technique serving as a basis for pinpointing and organizing factual information related to experimental results. In this paper, we enhance the idea proposed in ; annotating articles in terms of rhetorical zones with shallow nesting. We give a qualitative analysis of the zone identification (ZI) process in biology articles. Specifically, we illustrate the linguistic and other features of each zone based on our investigation of articles selected from four major online journals. We also discuss controversial cases and nested zones, and ZI using multiple features. In doing so, we provide a stronger theoretical and practical support for our framework toward automatic ZI.

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An analysis of Japanese ta/teiru in a dynamic semantics framework and a comparison with Korean temporal markers a finohta/a twuta

On behalf of the Logico-Linguistic Society of Japan, let …, 2005

... twuta Yoko MIZUTA Research Information Research Division, National Institute of Informatics 2... more

An annotation scheme for a rhetorical analysis of biology articles

In information extraction from scientific texts, it is crucially important to identify the unique... more In information extraction from scientific texts, it is crucially important to identify the unique contribution of the research. The task is complicated by the large number of statements made in each article that pertain to results, including reference to previous work and technical details. Simple keyword searches are helpful for a content-based analysis but fail to tell new results from other ones. We aim to approach the problem from a rhetorical perspective and give a 'zone analysis' (ZA) of texts in light of . We analyze a text into 'zones' with a shallow nesting based on the rhetorical status which each sequence of statements fit into and annotate the text correspondingly. Our current focus is on the molecular biology domain. In this paper, we propose an annotation scheme for ZA based on an empirical analysis of major online journals (EMBO, NAR, PNAS, and JCB), and illustrate how it works. Our scheme provides a way to differentiate the text in terms of the aspects of the author's own work (e.g. experimental procedure, findings, implications) and to identify a set of statements relating data and findings and therefore helps identify the author's new results and findings.

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Integrating deep and shallow semantic structures in open ontology forge

Proceedings of the …, 2004

The Semantic Web initiative has enabled a common infrastructure in knowledge represen-tation for ... more

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Semantic Mediawiki: A User-Oriented System for Integrated Content and Metadata Management System

This paper describes a Semantic MediaWiki, a MediaWiki extended to include the ideas of Semantic ... more

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Yoko MIZUTA

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