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| Abstract: | This study is concerned with Autoregressive Moving Average (ARMA) models of time series. ARMA models form a subclass of the class of general linear models which represents stationary time series, a phenomenon encountered most often in practice by engineers, scientists and economists. It is always desirable to employ models which use parameters parsimoniously. Parsimony will be achieved by ARMA models because it has only finite number of parameters. Even though the discussion is primarily concerned with stationary time series, later we will take up the case of homogeneous non stationary time series which can be transformed to stationary time series. Time series models, obtained with the help of the present and past data is used for forecasting future values. Physical science as well as social science take benefits of forecasting models. The role of forecasting cuts across all fields of management-—finance, marketing, production, business economics, as also in signal process, communication engineering, chemical processes, electronics etc. This high applicability of time series is the motivation to this study. |
| Description: | Department of mathematics, Cochin University of Science And Technology |
| URI: | http://dyuthi.cusat.ac.in/purl/3326 |
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| Dyuthi-T1295.pdf | (5.861Mb) |
| URI: | http://dyuthi.cusat.ac.in/purl/1031 |
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| Jessy John c 1987.pdf | (155.7Kb) |
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