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  • Artikel  (14)
  • knowledge representation  (7)
  • reduction  (7)
  • 2015-2019
  • 1990-1994  (14)
  • 1940-1944
  • 1915-1919
  • Philosophie  (11)
  • Sociologie  (3)
  • 1
    Digitale Medien
    Digitale Medien
    Springer
    Minds and machines 4 (1994), S. 59-73 
    ISSN: 1572-8641
    Schlagwort(e): Parsing ; knowledge representation ; semantic interpretation ; lambda calculus
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Philosophie
    Notizen: Abstract KRISP is a representation system and set of interpretation protocols that is used in the Sparser natural language understanding system to embody the meaning of texts and their pragmatic contexts. It is based on a denotational notion of semantic interpretation, where the phrases of a text are directly projected onto a largely pre-existing set of individuals and categories in a model, rather than first going through a level of symbolic representation such as a logical form. It defines a small set of semantic object types, grounded in the lambda calculus, and it supports the principle of uniqueness and supplies first class objects to represent partially-saturated relationships. KRISP is being used to develop a core set of concepts for such things as names, amounts, time, and modality, which are part of a few larger models for domains including “Who's News” and joint ventures. It is targeted at the task of information extraction, emphasizing the need to relate entities mentioned in new texts to a large set of pre-defined entities and those read about in earlier articles or in the same article.
    Materialart: Digitale Medien
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Minds and machines 4 (1994), S. 303-315 
    ISSN: 1572-8641
    Schlagwort(e): Hume ; cognitive science ; history of ; knowledge representation ; functionalism
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Philosophie
    Notizen: Abstract David Hume is widely believed to be one of the founders of functionalism. His principles of association are seen as an early attempt to articulate a mechanics of the mind akin to Newtonian mechanics. It is argued that this view is based on a failure to appreciate that Hume's skepticism about reason extends to our ability to understand the representation of everyday knowledge. For Hume there are “secret operations” of the mind, operations for which functional explanations are not forthcoming. Hume's place in the history of cognitive science is reevaluated in light of his views on common sense knowledge and belief formation.
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  • 3
    Digitale Medien
    Digitale Medien
    Springer
    Minds and machines 4 (1994), S. 1-25 
    ISSN: 1572-8641
    Schlagwort(e): Connectionism ; symbol processing ; levels of organization ; reduction ; mechanistic explanation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Philosophie
    Notizen: Abstract The notion of levels has been widely used in discussions of cognitive science, especially in discussions of the relation of connectionism to symbolic modeling of cognition. I argue that many of the notions of levels employed are problematic for this purpose, and develop an alternative notion grounded in the framework of mechanistic explanation. By considering the source of the analogies underlying both symbolic modeling and connectionist modeling, I argue that neither is likely to provide an adequate analysis of processes at the level at which cognitive theories attempt to function: One is drawn from too low a level, the other from too high a level. If there is a distinctly cognitive level, then we still need to determine what are the basic organizational principles at that level.
    Materialart: Digitale Medien
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  • 4
    Digitale Medien
    Digitale Medien
    Springer
    Minds and machines 4 (1994), S. 27-37 
    ISSN: 1572-8641
    Schlagwort(e): Epistemic authority ; explanation ; hierarchy ; homuncular functionalism ; intentionality ; levels ; measurement ; mechanistic explanation ; models ; reduction ; theories
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Philosophie
    Notizen: Abstract I begin by tracing some of the confusions regarding levels and “reduction” to a failure to distinguish two different principles according to which theories can be viewed as hierarchically arranged — epistemic authority and ontological constitution. I then argue that the notion of levels relevant to the debate between symbolic and connectionist paradigms of mental activity answers to neither of these models, but is rather correlative to the hierarchy of functional decompositions of cognitive tasks characteristic of “homuncular functionalism”. Finally, I suggest that the incommensurability of the intentional and extensional vocabularies constitutes a strongprima facie reason to conclude that there is little likelihood of filling in the story of Bechtel's “missing level” in such a way as to bridge the gap between such “homuncular functionalism” and his own model of mechanistic explanation.
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  • 5
    Digitale Medien
    Digitale Medien
    Springer
    Minds and machines 3 (1993), S. 475-510 
    ISSN: 1572-8641
    Schlagwort(e): Inferencing in natural language ; representation of natural language ; Boolean semantics ; negation ; negative information ; modeling natural language ; knowledge representation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Philosophie
    Notizen: Abstract A formal, computational, semantically clean representation of natural language is presented. This representation captures the fact that logical inferences in natural language crucially depend on the semantic relation of entailment between sentential constituents such as determiner, noun, adjective, adverb, preposition, and verb phrases. The representation parallels natural language in that it accounts for human intuition about entailment of sentences, it preserves its structure, it reflects the semantics of different syntactic categories, it simulates conjunction, disjunction, and negation in natural language by computable operations with provable mathematical properties, and it allows one to represent coordination on different syntactic levels. The representation demonstrates that Boolean semantics of natural language can be successfully modeled in terms of representation and inference by knowledge representation formalisms with Boolean semantics. A novel approach to the problem of automatic inferencing in natural language is addressed. The algorithm for updating a computer knowledge base and reasoning with explicit negative, disjunctive, and conjunctive information based on computing subsumption relation between the representations of the appropriate sentential constituents is discussed with examples.
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  • 6
    Digitale Medien
    Digitale Medien
    Springer
    Biology and philosophy 8 (1993), S. 277-299 
    ISSN: 1572-8404
    Schlagwort(e): Cell biology ; reduction ; instruments ; research techniques ; scientific institutions
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Philosophie
    Notizen: Abstract Many studies of the unification of science focus on the theories of different disciplines. The model for integration is the theory reduction model. This paper argues that the embodiment of theories in scientists, and the institutions in which scientists work and the instruments they employ, are critical to the sort of integration that actually occurs in science. This paper examines the integration of scientific endeavors that emerged in cell biology in the period after World War II when the development of cell fractionation and electron microscopy made serious investigations of cell organelles possible. One surprising feature of such integration is that it generated further disintegration as the new institutions of cell biology separated the practitioners of the new discipline from other, closely related biological disciplines.
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  • 7
    Digitale Medien
    Digitale Medien
    Springer
    Biology and philosophy 8 (1993), S. 301-318 
    ISSN: 1572-8404
    Schlagwort(e): Beadle ; coherence ; genetics ; historiography of science ; integration of disciplines ; methodology ; molecular biology ; reduction ; Tatum ; unity of science
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Philosophie
    Notizen: Abstract In this paper I respond to Wim van der Steen's arguments against the supposed current overemphasis on norms ofcoherence andinterdisciplinary integration in biology. On the normative level, I argue that these aremiddle-range norms which, although they may be misapplied in short-term attempts to solve (temporarily?) intractable problems, play a guiding role in the longer-term treatment of biological problems. This stance is supported by a case study of apartial success story, the development of the one gene — one enzyme hypothesis. As that case shows, thegoal of coherent interdisciplinary integration not only provides guidance for research, but also provides the standard for recognizingfailed integrations of the sort that van der Steen criticizes.
    Materialart: Digitale Medien
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  • 8
    Digitale Medien
    Digitale Medien
    Springer
    Biology and philosophy 8 (1993), S. 319-347 
    ISSN: 1572-8404
    Schlagwort(e): Theory structure ; reduction ; integration ; neuroscience ; Aplysia ; parallel processing ; explanation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Philosophie
    Notizen: Abstract This paper examines the nature of theory structure in biology and considers the implications of those theoretical structures for theory reduction. An account of biological “theories” as interlevel prototypes embodying causal sequences, and related to each other by strong analogies, is presented, and examples from the neurosciences are provided to illustrate these “middle-range” theories. I then go on to discuss several modifications of Nagel's classical model of theory reduction, and indicate at what stages in the development of reductions these models might best apply. Finally I consider several implications of these analyses of theory structure and reduction for disciplinary integration in biology.
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  • 9
    Digitale Medien
    Digitale Medien
    Springer
    Theory and decision 34 (1993), S. 293-311 
    ISSN: 1573-7187
    Schlagwort(e): Negotiation modelling ; rule-based formalism ; logic ; expert systems ; structuring ; knowledge representation ; negotiation support
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Sociologie , Wirtschaftswissenschaften
    Notizen: Abstract The general importance of negotiations and bargaining as means of decision making has given rise to considerable research within two broad paradigms. The behavioral paradigm has attempted to discover rationality in specific situations in order to generalize. The formal paradigm has assumed a general rationality which could be applied to specific problems. This strict dichotomy imposes unnecessary restrictions on the use of formal approaches to structure, represent, and support negotiators. Logic-based approaches, such as rule-based formalism, make it possible to blend unique and specific aspects of a problem, with general reasoning mechanisms and rationality postulates. This paper introduces rule-based formalism and discusses its advantages and disadvantages. It attempts to present its ability to represent complex decision processes and to reason using formal structures. The approach is illustrated with several simple examples.
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  • 10
    Digitale Medien
    Digitale Medien
    Springer
    Theory and decision 34 (1993), S. 255-273 
    ISSN: 1573-7187
    Schlagwort(e): Cognitive mapping ; cognitive psychology ; international negotiation ; collective decision-making ; knowledge representation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Sociologie , Wirtschaftswissenschaften
    Notizen: Abstract This article explores the use of cognitive mapping as a tool for supporting international negotiation. Cognitive mapping was developed from the research tradition in cognitive psychology that was pioneered by Heider, congruity theory and attribution theory. Applied to political analysis, the technique can be used to represent causal and quasi-causal thinking about a specific policy area. Cognitive maps can be hand-drawn, or, in the case of maps consisting of more than 25 concepts, machine-generated for detailed and systematic analysis. Regardless of the format, cognitive maps can be examined to determine the most central concepts, the explanation of a problem in terms of its root causes and potential consequences, the use of evidence, such as historical analogies, internal consistency, and perceived consequences of policy proposals. Although the technique was designed to represent the views of individuals, cognitive maps can be aggregated to study collective decision-making. Applied to international negotiation, the technique can be employed as a substance-focused tool to represent and integrate knowledge about a specific policy area for use by negotiators. As a process-oriented tool, the technique can be used to help negotiators understand better their own assumptions about a problem, the viewpoints of other parties to the negotiations, and the ways others see their own position. In this mode, the technique has promise for promoting convergence of views and negotiated agreements.
    Materialart: Digitale Medien
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  • 11
    Digitale Medien
    Digitale Medien
    Springer
    Minds and machines 2 (1992), S. 27-49 
    ISSN: 1572-8641
    Schlagwort(e): Nonmonotonic ; inference ; logic ; conditionals ; consequence relations ; belief revision ; theory change ; defeasible reasoning ; knowledge representation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Informatik , Philosophie
    Notizen: Abstract Recently, John Bell has proposed that a specific conditional logic, C, be considered as a serious candidate for formally representing and faithfully capturing various (possibly all) formalized notions of nonmonotonic inference. The purpose of the present paper is to develop evaluative criteria for critically assessing such claims. Inference patterns are described in terms of the presence or absence of residual classical monotonicity and intrinsic nonmonotonicity. The concept of a faithful representation is then developed for a formalism purported to encode a pattern of nonmonotonic inference already captured by another. In the main body of the paper these evaluative criteria are applied to assess (negatively) whether C or any conditional logic provides a faithful representation for nonmonotonic patterns of inference captured by inference operators and relations modeling the dynamics of belief change.
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  • 12
    Digitale Medien
    Digitale Medien
    Springer
    Biology and philosophy 7 (1992), S. 229-236 
    ISSN: 1572-8404
    Schlagwort(e): Evolutionary epistemology ; nature of science ; reduction
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Philosophie
    Notizen: Abstract In his critical notice, Rosenberg (1991) raises three objections to my evolutionary account of science: whether it is more than a week metaphor, the compatibility of my past objections to reduction and my current advocacy of viewing selection in terms of replication and interaction, and finally, the feasibility of identifying appropriate replicators and interactors in biological evolution, let alone conceptual evolution. I discuss each of these objections in turn.
    Materialart: Digitale Medien
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  • 13
    Digitale Medien
    Digitale Medien
    Springer
    Biology and philosophy 6 (1991), S. 401-412 
    ISSN: 1572-8404
    Schlagwort(e): Ants ; behavior ; culture ; Holism ; human ; meaning ; reduction ; sociobiology ; symbol
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Philosophie
    Notizen: Abstract Most research in the natural sciences passes through repeated cycles of a analytic reduction to the next lower level of organization, then resynthesis to the original level, then new analyticareduction, and so on. A residue of unexplained phenomena at the original level appears at first to require a “holistic” description independent of the lower level, but the residue shrinks as knowledge increases. This principle is well illustrated by recent studies from the social organization of insects, several examples of which are cited here. In theory it should also apply to human social organization. Culture is biological: meaning in culture can be approached as the outcome of mechanism-based causation, because culture stems from individual cognition, which has a biological basis. It would seem to follow that the most effective way to study culture is across all levels of organization from gene to society, passing repetitively through a cycle of reduction and synthesis in the manner of the natural sciences. Reductionistic analysis is favored by the tendency of semantic memory and culture to occur in discrete units that are arranged hierarchically.
    Materialart: Digitale Medien
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  • 14
    Digitale Medien
    Digitale Medien
    Springer
    Theory and decision 28 (1990), S. 243-273 
    ISSN: 1573-7187
    Schlagwort(e): Negotiation ; structuring ; simulation ; rule-based model ; decision support ; knowledge representation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Sociologie , Wirtschaftswissenschaften
    Notizen: Abstract Negotiation is a complex and dynamic decision process during which parties perceptions, preferences, and roles may change. Modelling such a process requires flexible and powerful tools. The use of rule-based formalism is therefore expanded from its traditional expert system type technique, to structuring and restructuring non-trivial processes like negotiation. Using rules we build a model of a negotiation problem. Some rules are used to infer positions and reactions of the parties, other rules are used to modify problem representation when such a modification is necessary. We illustrate the approach with a contract negotiation case between two large companies. We also show how this approach could help one party to realize that negotiations are being carried on against their assumptions and expectations.
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