Topic
Representation (systemics)
About: Representation (systemics) is a research topic. Over the lifetime, 33821 publications have been published within this topic receiving 475461 citations.
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TL;DR: This paper relates the approaches, results, and goals of this stream of research, called functional representation (FR), with the functional modeling (FM) stream in engineering, and argues that the two streams are performing research that is mutually complementary.
Abstract: This paper is an informal description of some recent insights about what a device function is, how it arises in response to needs, and how function arises from the structure of a device and the functions of its components. These results formalize and clarify a set of contending intuitions about function that researchers have had. The paper relates the approaches, results, and goals of this stream of research, called functional representation (FR), with the functional modeling (FM) stream in engineering. Despite the occurrence of the term function in the two streams, often the results and techniques in the two streams appear not to have much to do with each other. I argue that, in fact, the two streams are performing research that is mutually complementary. FR research provides the basic layer for device ontology in a formal framework that helps to clarify the meanings of terms such as function and structure, and also to support representation of device knowledge for automated reasoning. FM research provides another layer in device ontology, by attempting to identify behavior primitives that are applicable to subsets of devices, with the hope that functions can be described in those domains with an economy of terms. This can lead to useful catalogs of functions and devices in specific areas of engineering. With increased attention to formalization, the work in FM can provide domain-specific terms for FR research in knowledge representation and automated reasoning.
103 citations
Posted Content•
TL;DR: In this paper, a temporal belief-network representation of causal independence is proposed to elicit probabilistic models, which can simplify inference and does not require the use of unobservable variables.
Abstract: I introduce a temporal belief-network representation of causal independence that a knowledge engineer can use to elicit probabilistic models. Like the current, atemporal belief-network representation of causal independence, the new representation makes knowledge acquisition tractable. Unlike the atemproal representation, however, the temporal representation can simplify inference, and does not require the use of unobservable variables. The representation is less general than is the atemporal representation, but appears to be useful for many practical applications.
103 citations
TL;DR: This paper gave explicit expressions for the singular vectors in highest weight representations of the Virasoro algebra using a precise definition of fusion, and gave explicit expression for singular vectors for the highest weight representation of the algebra.
103 citations
TL;DR: 3-D multiview object representations are presented as an alternative approach to traditional 3-D volumetric object representations that store features in a viewer-centered representation and thus can be immediately used to match features derived from 2-D images.
103 citations
Patent•
15 Sep 2008
TL;DR: In this paper, gesture-based user interaction within an interactive display area is discussed. The display of one or more virtual objects and user interactions with the virtual objects may be further provided Multiple interactive areas may be created by partitioning an area proximate a display into multiple volumetric spaces or zones.
Abstract: Systems and methods for processing gesture-based user interactions within an interactive display area are provided The display of one or more virtual objects and user interactions with the one or more virtual objects may be further provided Multiple interactive areas may be created by partitioning an area proximate a display into multiple volumetric spaces or zones The zones may be associated with respective user interaction capabilities A representation of a user on the display may change as the ability of the user to interact with one or more virtual object changes
103 citations