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  • Essay / Searching for information based on words - 2553

    Searching documents using keywords is a very common practice. This word-based information retrieval practice is affected by two complementary problems. Firstly, we can get relevant and irrelevant search results if we use the keyword with possible meaning of it for search. Second, if only the title keyword is used, some relevant text may be missing, because sometimes the text related to that keyword does not contain context, but instead contains some context. We aim to use Word Sense disambiguation for text classification in which all non-stop words will be labeled with their senses relative to the document text and these senses will then be selected as classes for the given document. As a result, there will be a common class for all associated text and can therefore be better searched. We will use WorldNet to extract the correct meaning of ambiguous non-stop words. The classification results thus obtained will then be evaluated by comparing them with the classification results of manual disambiguation.Chapter-1IntroductionThe explosion of the analog communications industry has led to many developments in the design of trans-receivers. The multi-standard transceivers used today for these systems should be capable of operating over a wide frequency range with minimal duplicate hardware. A very critical element of any type of transceiver is the frequency synthesizer (FS). A special frequency synthesizer, that is, a multi-standard frequency synthesizer, must be able to synthesize different frequency bands for different wireless standards....... middle of paper...... cs". William Egan, Wiley InterScience, July 1998 "Frequency synthesis". by VF Kroupa, New York, 1973 "Design of phase-locked loop circuits". , The Art of Electronics 2nd ed. Cambridge University Press, Cambridge, 1989 ISBN 0-521-37095-7 p. 644 ^ Jump to: ab Crawford 1994, pp. 9, 19 Crawford, James A. (1994), Frequency Synthesizer Design Handbook, Artech House, ISBN 0 -89006-440-7 Wolaver, Dan H. (1991), Design of Phase-Locked Loop Circuits, Prentice Hall, ISBN 0-13-662743-9