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TIME VARIATIONS OF THE MONTHLY SUNSPOT DATA BY USING WAVELET TRANSFORM
Dipendra Nath Ghosh*,Koushik Ghosh**
We have used Simple Denosing Algorithm using Wavelet Transform on the monthly sunspot data from January 1749 to February 2005 and the method exhibits periodicity around 132, 149, 168, 374, 483, 687, 819, 987, 1056, 1186, 1339, 1457, 1621, 1736, 1898, 2024, 2172, 2275, 2381, 2506, 2643,2769,2900 and 3019 months.
Key Word: Monthly Sunspot data, Algorithm, Periodicity, Wavelet Transform, Peaks.
NEWS CORPUS DEVELOPMENT
Debasis Guha1, Dr. Sanjay Mandal2
Abstract :
Corpus is generally defined as a collection of documents. Corpus can be developed from news. There are several types of corpora presently available. Researches are going on to develop news corpus. Because everything is available from the web. Everyday news is available from the web. But problem is can not process the news directly from the web because there are some other extra documents like links, text boxes etc. In webpage, there are some special tags called meta tags which are very much useful to retrieve the necessary information from the web. So if you have a news corpus it will be very useful for several application.
Keywords : Corpus, News Corpus, meta tag. |
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