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12,404
Editorial: Three types of interaction
- The American Journal of Distance Education
, 1992
"... Many of the greatest problems of communicating about concepts, and, therefore, practice in distance education arise from our use of crude hypothetical constructs-terms like distance, independence, and interaction, which are used in very imprecise and general ways, each having acquired a multiplicity ..."
Abstract
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Cited by 405 (0 self)
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Many of the greatest problems of communicating about concepts, and, therefore, practice in distance education arise from our use of crude hypothetical constructs-terms like distance, independence, and interaction, which are used in very imprecise and general ways, each having acquired a
Similarity search in high dimensions via hashing
, 1999
"... The nearest- or near-neighbor query problems arise in a large variety of database applications, usually in the context of similarity searching. Of late, there has been increasing interest in building search/index structures for performing similarity search over high-dimensional data, e.g., image dat ..."
Abstract
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Cited by 641 (10 self)
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The nearest- or near-neighbor query problems arise in a large variety of database applications, usually in the context of similarity searching. Of late, there has been increasing interest in building search/index structures for performing similarity search over high-dimensional data, e.g., image
Clustering with Bregman Divergences
- JOURNAL OF MACHINE LEARNING RESEARCH
, 2005
"... A wide variety of distortion functions are used for clustering, e.g., squared Euclidean distance, Mahalanobis distance and relative entropy. In this paper, we propose and analyze parametric hard and soft clustering algorithms based on a large class of distortion functions known as Bregman divergence ..."
Abstract
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Cited by 443 (57 self)
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A wide variety of distortion functions are used for clustering, e.g., squared Euclidean distance, Mahalanobis distance and relative entropy. In this paper, we propose and analyze parametric hard and soft clustering algorithms based on a large class of distortion functions known as Bregman
Does distance still matter? The information revolution in small business lending
- JOURNAL OF FINANCE
, 2002
"... The distance between small firms and their lenders is increasing, and they are communicating in more impersonal ways. After documenting these systematic changes, we demonstrate they do not arise from small firms locating differently, consolidation in the banking industry, or biases in the sample. In ..."
Abstract
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Cited by 338 (10 self)
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The distance between small firms and their lenders is increasing, and they are communicating in more impersonal ways. After documenting these systematic changes, we demonstrate they do not arise from small firms locating differently, consolidation in the banking industry, or biases in the sample
Flatness and defect of nonlinear systems: Introductory theory and examples
- International Journal of Control
, 1995
"... We introduce flat systems, which are equivalent to linear ones via a special type of feedback called endogenous. Their physical properties are subsumed by a linearizing output and they might be regarded as providing another nonlinear extension of Kalman’s controllability. The distance to flatness is ..."
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Cited by 346 (23 self)
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We introduce flat systems, which are equivalent to linear ones via a special type of feedback called endogenous. Their physical properties are subsumed by a linearizing output and they might be regarded as providing another nonlinear extension of Kalman’s controllability. The distance to flatness
Critical thinking, cognitive presence, and computer conferencing in distance education
- The American Journal of Distance Education
, 2001
"... This article describes a practical approach to judging the nature and quality of critical discourse in a computer conference. A model of a critical community of inquiry frames the research. A core concept in defining a community of inquiry is cognitive presence. In turn, the practical inquiry model ..."
Abstract
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Cited by 238 (5 self)
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operationalizes cognitive presence for the purpose of developing a tool to assess critical discourse and reflection. Encouraging empirical findings related to an attempt to create an efficient and reliable instrument to assess the nature and quality of critical discourse and thinking in a text-based educational
Constructivism and computer-mediated communication in distance education
- The American Journal of Distance Education
, 1995
"... The fields of learning theory and instructional design are in the midst of a scientific revolution in which their objectivist philosophical foundations are being replaced by a constructivist epistemology. This article describes the assumptions of a constructivist epistemology, contrasts them with ob ..."
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Cited by 195 (0 self)
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with objectivist assumptions, and then describes instructional systems that can support constructive learning at a distance Limitations of Distance Learning Technologies In an effort to supplement or replace live face-to-face instruction, technologicany mediated distance learning has more often than not merely
Overcoming the Liability of Foreignness
- Academy of Management Journal
, 1995
"... This study addressed the question of whether firms in a competitive, globally integrated environment face a "liability of foreignness " and to what extent either importing home-country organizational capabilities or copying the practices of successful local firms can help them over-come th ..."
Abstract
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Cited by 248 (2 self)
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multinational subunits. They also highlight the difficulty firms face in copying organizational practices from other firms. Researchers in international business have long theorized that multina-tional enterprises (MNEs) doing business abroad face costs (Hymer, 1976; Kindleberger, 1969) arising from
Policy invariance under reward transformations: Theory and application to reward shaping
- In Proceedings of the Sixteenth International Conference on Machine Learning
, 1999
"... This paper investigates conditions under which modifications to the reward function of a Markov decision process preserve the optimal policy. It is shown that, besides the positive linear transformation familiar from utility theory, one can add a reward for transitions between states that is express ..."
Abstract
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Cited by 242 (8 self)
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. These results shed light on the practice of reward shaping, a method used in reinforcement learning whereby additional training rewards are used to guide the learning agent. In particular, some well-known "bugs" in reward shaping procedures are shown to arise from non-potential-based rewards
Adaptive and Intelligent Technologies for Web-based Education
- Special Issue on Intelligent Systems and Teleteaching, Künstliche Intelligenz
, 1999
"... The paper provides a review of adaptive and intelligent technologies in a context of Web-based distance education. We analyze what kind of technologies are available right now, how easy they can be implemented on the Web, and what is the place of these technologies in large-scale Web-based education ..."
Abstract
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Cited by 176 (8 self)
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The paper provides a review of adaptive and intelligent technologies in a context of Web-based distance education. We analyze what kind of technologies are available right now, how easy they can be implemented on the Web, and what is the place of these technologies in large-scale Web
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