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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Machine learning 17 (1994), S. 47-67 
    ISSN: 0885-6125
    Keywords: Machine discovery ; reactions ; particle physics ; algebraic reasoning ; model building
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Kocabas (1991) describes a situation from particle physics in which quantum properties and conservation laws are postulated from lists of observed and unobserved reactions. Kocabas also presents a program named BR-3 that can rediscover some accepted quantum properties from textbook data, although it fails on a more difficult example from the same source. This paper describes PAULI, a program that solves the same task as BR-3 but uses a different problem-solving model. PAULI produces different, simpler solutions than does BR-3, and it can also handle the problematic example. After comparing the two programs, we conclude that PAULI offers distinct advantages over its predecessor, which we attribute to an algebraic approach to reasoning about sets of reactions.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Machine learning 17 (1994), S. 47-67 
    ISSN: 0885-6125
    Keywords: Machine discovery ; reactions ; particle physics ; algebraic reasoning ; model building
    Source: Springer Online Journal Archives 1860-2000
    Topics: Computer Science
    Notes: Abstract Kocabas (1991) describes a situation from particle physics in which quantum properties and conservation laws are postulated from lists of observed and unobserved reactions. Kocabas also presents a program named BR-3 that can rediscover some accepted quantum properties from textbook data, although it fails on a more difficult example from the same source. This paper describes PAULI, a program that solves the same task as BR-3 but uses a different problem-solving model. PAULI produces different, simpler solutions than does BR-3, and it can also handle the problematic example. After comparing the two programs, we conclude that PAULI offers distinct advantages over its predecessor, which we attribute to analgebraic approach to reasoning about sets of reactions.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 95 (1991), S. 4918-4921 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 96 (1992), S. 2394-2396 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 97 (1993), S. 2799-2799 
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of chemical information and modeling 31 (1991), S. 554-556 
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of chemical information and modeling 34 (1994), S. 976-983 
    ISSN: 1520-5142
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Catalysis letters 28 (1994), S. 79-87 
    ISSN: 1572-879X
    Keywords: computer-aided elucidation ; reaction mechanisms ; ethane hydrogenolysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The computer program MECHEM is a tool for interactive elucidation of reaction mechanisms. Such programs confront severe combinatorial problems on complex multistep reactions, hence the practicality of these efforts is doubtful. We report the first evidence that MECHEM is successfully applicable to practical experimental problems, in this case, catalyzed hydrogenolysis of ethane.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Computational Chemistry 15 (1994), S. 1266-1277 
    ISSN: 0192-8651
    Keywords: Computational Chemistry and Molecular Modeling ; Biochemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Computer Science
    Notes: MECHEM is a computer aid for elucidation of reaction pathways that was developed over the last 5 years. The program searches systematically and comprehensively for the simplest multistep reaction pathways (or mechanisms) that are consistent with the experimental constraints formulated by the experimentalist, any ad hoc assumptions, and the program's internal theory. Previous articles have reported the basic pathway-generation algorithm and another algorithm that tests the structural soundness of individual steps. This article introduces an algorithm to solve another basic problem: Given a multistep pathway containing a mixture of molecular structures and formulas, assign possible structures to the formulas while obeying (and exploiting) the constraint imposed by the pathway steps. With this new algorithm, MECHEM is now approaching competence as an interactive tool for elucidating some catalytic reaction pathways, which is the current chemical focus. © 1994 by John Wiley & Sons, Inc.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Computational Chemistry 13 (1992), S. 1079-1088 
    ISSN: 0192-8651
    Keywords: Computational Chemistry and Molecular Modeling ; Biochemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Computer Science
    Notes: An algorithm is introduced that can generate reaction-pathway hypotheses for computer-assisted elucidation. A key aspect of the algorithm is its ability to conjecture reaction intermediates and products that are not input to the algorithm. The formal basis for the conjecture is stoichiometry, i.e., species variables are used in the construction of a pathway, and their molecular formulas are inferred when sufficient stoichiometric constraint is placed on the variables. These conjectured species have a degree of plausibility when the algorithm is used systematically to search for the simplest pathways consistent with given experimental evidence. The MECHEM system for computer-assisted elucidation under development by the author adapts this algorithm to generate initial pathway hypotheses from experimental data. © 1992 by John Wiley & Sons, Inc.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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