Maintaining Knowledge about Temporal Intervals.

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Bibliographic Details
Title: Maintaining Knowledge about Temporal Intervals.
Authors: Allen, James F.1, Waltz, David
Source: Communications of the ACM. Nov83, Vol. 26 Issue 11, p832-843. 12p. 10 Diagrams.
Subjects: Engineering databases, Information storage & retrieval systems, Interval analysis, Numerical analysis, ENGINE (Information retrieval system), INSPEC (Information retrieval system), Project SHARP
Abstract: An interval-based temporal logic is introduced together with a computationally effective reasoning algorithm based on constraint propagation This system is notable in offering a delicate balance between expressive power and the efficiency of its deductive engine. A notion of reference intervals is introduced which captures the temporal hierarchy implicit in many domains, and which can be used to precisely control the amount of deduction performed automatically by the system. Examples we provided for a database containing historical data, a database used fur modeling processes and process interaction, and a database for an interactive system where the present moment is continually being updated. [ABSTRACT FROM AUTHOR]
Copyright of Communications of the ACM is the property of Association for Computing Machinery and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: <searchLink fieldCode="AR" term="%22Allen%2C+James+F%2E%22">Allen, James F.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Waltz%2C+David%22">Waltz, David</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Communications+of+the+ACM%22">Communications of the ACM</searchLink>. Nov83, Vol. 26 Issue 11, p832-843. 12p. 10 Diagrams.
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  Data: <searchLink fieldCode="DE" term="%22Engineering+databases%22">Engineering databases</searchLink><br /><searchLink fieldCode="DE" term="%22Information+storage+%26+retrieval+systems%22">Information storage & retrieval systems</searchLink><br /><searchLink fieldCode="DE" term="%22Interval+analysis%22">Interval analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+analysis%22">Numerical analysis</searchLink><br /><searchLink fieldCode="DE" term="%22ENGINE+%28Information+retrieval+system%29%22">ENGINE (Information retrieval system)</searchLink><br /><searchLink fieldCode="DE" term="%22INSPEC+%28Information+retrieval+system%29%22">INSPEC (Information retrieval system)</searchLink><br /><searchLink fieldCode="DE" term="%22Project+SHARP%22">Project SHARP</searchLink>
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  Data: An interval-based temporal logic is introduced together with a computationally effective reasoning algorithm based on constraint propagation This system is notable in offering a delicate balance between expressive power and the efficiency of its deductive engine. A notion of reference intervals is introduced which captures the temporal hierarchy implicit in many domains, and which can be used to precisely control the amount of deduction performed automatically by the system. Examples we provided for a database containing historical data, a database used fur modeling processes and process interaction, and a database for an interactive system where the present moment is continually being updated. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Communications of the ACM is the property of Association for Computing Machinery and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1145/182.358434
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        Text: English
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        PageCount: 12
        StartPage: 832
    Subjects:
      – SubjectFull: Engineering databases
        Type: general
      – SubjectFull: Information storage & retrieval systems
        Type: general
      – SubjectFull: Interval analysis
        Type: general
      – SubjectFull: Numerical analysis
        Type: general
      – SubjectFull: ENGINE (Information retrieval system)
        Type: general
      – SubjectFull: INSPEC (Information retrieval system)
        Type: general
      – SubjectFull: Project SHARP
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      – TitleFull: Maintaining Knowledge about Temporal Intervals.
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              M: 11
              Text: Nov83
              Type: published
              Y: 1983
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              Value: 26
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              Value: 11
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