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Searching for authors named "Frans Coetzee" – sorted by Relevance.

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  • Semi-Automatic Probabilistic Morphological Detection  
  • by Frans Coetzee And, Frans M. Coetzee, Visvanathan Ramesh
  • …| We describe a semi-automated approach for designing morphological operators for detecting geometric structures in images. The approach automatically combines simple morphological primitives from a pool to generate an enumerable family of complex morphological operators that span a Receiver Operati…
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  • On the Uniqueness of Weights in Single Layer Perceptrons  
  • by Frans M. Coetzee, Virginia L. Stonick — 1995
  • …In this paper the geometric formulation of the single layer perceptron weight optimization problem previously described in [1,2] is combined with results [3-7] on nonconvex set projections to describe sufficient conditions for uniqueness of weight solutions. It is shown that the perceptron data surf…
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  • On a Natural Homotopy between Linear and Nonlinear Single Layer Networks  
  • by Frans M. Coetzee, Virginia L. Stonick — 1994 — IEEE Trans. Neural Networks
  • …In this paper we formulate a homotopy approach for solving for the weights of a network by smoothly transforming a linear single layer network into a nonlinear perceptron network. While other researchers have reported potentially useful numerical results based on heuristics related to this approach,…
  • Cited by 5 (4 self) – Add To MetaCart
  • 488 Solutions to the XOR Problem  
  • by Frans M. Coetzee, Virginia L. Stonick — 1996 — In M.C. Mozer et. al. (Eds.) Neural Information Processing Systems - Natural and Synthetic
  • …A globally convergent homotopy method is defined that is capable of sequentially producing large numbers of stationary points of the multi-layer perceptron mean-squared error surface. Using this algorithm large subsets of the stationary points of two test problems are found. It is shown empirical…
  • Cited by 2 (0 self) – Add To MetaCart
  • Feature selection in web applications by roc inflections and powerset pruning  
  • by Frans M. Coetzee, Eric Glover, Steve Lawrence, C. Lee Giles — 2001 — In Proceedings of 2001 Symp. on Applications and the Internet (SAINT 2001
  • …coetzee,compuman,lawrence,giles¥ A basic problem of information processing is selecting enough features to ensure that events are accurately represented for classification problems, while simultaneously minimizing storage and processing of irrelevant or marginally important features. To address this…
  • Cited by 3 (0 self) – Add To MetaCart
  • Feature Selection in Web Applications Using ROC Inflections and Power Set Pruning  
  • by Power Set Pruning, Frans Coetzee Eric, Frans M. Coetzee, Frans M. Coetzee, Eric Glover, Eric Glover, Steve Lawrence, Steve Lawrence, C. Lee Giles, C. Lee Giles — 2000
  • …A basic problem of information processing is selecting enough features to ensure that events are accurately represented for classification problems, while simultaneously minimizing storage and processing of irrelevant or marginally important features. To address this problem, feature selection pro…
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  • Binary Feature Selection and Integration in Specialized Search Engines  
  • by Frans Coetzee Andries, Andries Kruger, C. Lee Giles, Steve Lawrence, Christian W. Omlin
  • …We present a methodology for rapid implementation of specialized search engines. To catalog data, these search engines interpret and classify the content of web material to identify different representations of common domain-related elements. While designers can typically develop multiple partial …
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  • Self-Organization and Identification of Web Communities  
  • by Gary William Flake, Steve Lawrence, C. Lee Giles, Frans M. Coetzee — 2002 — IEEE Computer
  • …Despite the decentralized and unorganized nature of the web, we show that the web self-organizes such that communities of highly related pages can be efficiently identified based purely on connectivity.…
  • Cited by 85 (0 self) – Add To MetaCart
  • Persistence of information on the web: Analyzing citations contained in research articles  
  • by Steve Lawrence Frans, Steve Lawrence, Frans Coetzee, Eric Glover, David Pennock, Bob Krovetz, Gary Flake, Lee Giles, Andries Kruger, Finn Nielsen — 2000 — In CIKM ’00: Proceedings of the ninth international conference on Information and knowledge management
  • …We analyze the persistence of information on the web, looking at the percentage of invalid URLs contained in academic articles within the CiteSeer database. The number of URLs contained in research papers has increased from an average of 0.04 in 1992 to 1.8 in 1999. We analyzed the validity of URLs …
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