kovalevsky v a (11 Ergebnisse)

gebundene Ausgabe. Zustand: Gut. 238 Seiten; Das hier angebotene Buch stammt aus einer teilaufgelösten wissenschaftlichen Bibliothek und trägt die entsprechenden Kennzeichnungen (Rückenschild, Instituts-Stempel.); leichte altersbedingte Anbräunung des Papiers; der Buchzustand ist ansonsten ordentlich und dem Alter entsprechend gut. Sprache: Englisch Gewicht in Gramm: 530.

Format groß 8°, kartoniert, Ecken leicht berieben, 241 Seiten, kleines Fleckchen auf dme Vorderschnitt, dies ist ein regulär ausgesondertes Bibliotheksexemplar aus einer wissenschaftlichen Bibliothek, keine Markierungen / Anmerkungen, das Buch befindet sich in einem guten Zustand --- Hardcover, 241 pages, corners slightlyrubbed, little dot on front cut, Lib.Ex., no marks, the book is in a good condition. Shipping to abroad insured with tracking number.

Zustand: New. In.

Paperback. Zustand: Fair. 127 p. Russian.

XVIII,426 S., kt. 2, N. (Int.Astronomical Union).

Taschenbuch. Zustand: Neu. Image Pattern Recognition | V. A. Kovalevsky | Taschenbuch | 241 S. | Englisch | 2011 | Springer | EAN 9781461260356 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - During the last twenty years the problem of pattern recognition (specifically, image recognition) has been studied intensively by many investigators, yet it is far from being solved. The number of publications increases yearly, but all the experimental results-with the possible exception of some dealing with recognition of printed characters-report a probability of error significantly higher than that reported for the same images by humans. It is widely agreed that ideally the recognition problem could be thought of as a problem in testing statistical hypotheses. However, in most applications the immediate use of even the simplest statistical device runs head on into grave computational difficulties, which cannot be eliminated by recourse to general theory. We must accept the fact that it is impossible to build a universal machine which can learn an arbitrary classification of multidimensional signals. Therefore the solution of the recognition problem must be based on a priori postulates (concerning the sets of signals to be recognized) that will narrow the set of possible classifications, i.e., the set of decision functions. This notion can be taken as the methodological basis for the approach adopted in this book.

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Taschenbuch. Zustand: Neu. Relativity in Celestial Mechanics and Astrometry | High Precision Dynamical Theories and Observational Verifications | V. A. Brumberg (u. a.) | Taschenbuch | xviii | Englisch | 1986 | Springer Netherland | EAN 9789027721907 | Verantwortliche Person für die EU: Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg, juergen[dot]hartmann[at]springer[dot]com | Anbieter: preigu.

Taschenbuch. Zustand: Neu. Druck auf Anfrage Neuware - Printed after ordering - The driving idea, in organizing this Symposium on 'Relativity in Celestial Mechanics . and Astrometry' was that, in recent years, the ac curacy of several Astrometric techniques has so much increased that re lativistic effects are no more marginally mentioned in academic presen tations but have become an intrinsic part of the interpretation of all the positional data. Techniques such as V. L. B. I. , space probes, lunar lasers, etc . . . have greatly contributed to reduce the accuracy level to an angular equivalent of a few milliarc-seconds. HIPPARCOS will extend this trend to stellar astrometry and new proposals aim at gaining ano ther one or two orders of magnitude in observing precision. In paral lel, great progress has also been made in the theories of motion of ce lestial bodies and more rigourous treatments within the frame of general relativity become necessary. The definition of reference frames and of various coordinate times become also a major problem in the intercompa rison of observations produced by different methods. This Symposium gave to people using relativistic corrections in reducing their measurements or in constructing various theories of mo tion a chance to exchange their experience in the field and to confront it with theoreticians in general relativity. The Symposium was approved by the IAU in 1983 and it was organi zed by the Institute of Theoretical Astronomy of the USSR Academy of Sciences on May 28-31, 1985.

Hardcover. Zustand: Fine. ix, 267 pp. ; illustrated with figures, photos and diagrams ; black cloth ; no dustjacket ; ex-lib, stamps, label, date due, pocket ; LCCN: 67-17216 ; Contents: The theory of character recognition -- The problem of character recognition form the point of view of mathematical statistics -- Spontaneous character differentiation -- On the correlation method of recognition -- On the effect of the number of indexes upon recognition reliability when determining the A priori probability of occurrence of classes with an error -- Experiments and calculations with the use of machines -- General purpose device for processing optical information by means of computers -- Algorithm for the recognition of typed symbols on the basis of ideal reference standards -- Calculation of the mutual correlation matrix of ideal reference standards -- Statistical research on the reliability of a character reader with optical correlation -- Designing of character readers -- On the accuracy of the calculation of correlation factors by the optical method -- On the selection of averaged reference standard patterns -- Character readers and their components -- Some works by foreign authors in the field of recognizing standard print -- Correlation-type character reader with shift register (ChARS) -- Character reader based on the principles of optical correlation -- Recognition of handwritten characters by means of a servo scan -- Sequential action correlation type character reader -- Designing extremum position indicators for correlation character readers -- Calculating and designing code voltage converters with diode keys -- Triode tube indicators of instant of voltage increase. ; "The nineteen articles in this collection focus on [pattern recognition] problems and computer simulation of various algorithms and recognition systems. All aspects of character recognition circuits and readers described here were developed at the Institute of Cybernetics, Academy of Sciences of the Ukrainian SSR.These problems first arose when it became evident to Soviet researchers that it would be useful to handle original documents without any encoding.all the work is strictly based on mathematically substantial procedures and methods used in the development of actual equipment at the Institute." ; covers the mathematics of OCR software and beginnings of the OCR scanner ; FINE. Book.