دانلود مقاله ISI انگلیسی شماره 78753
ترجمه فارسی عنوان مقاله

روش سریع برای کسب دانش در پوشش سیستم های اطلاعات با استفاده از عملیات ماتریس

عنوان انگلیسی
Fast approach to knowledge acquisition in covering information systems using matrix operations
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
78753 2015 9 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Knowledge-Based Systems, Volume 79, May 2015, Pages 90–98

ترجمه کلمات کلیدی
مجموعه ای تقریبی؛ پوشش سیستم اطلاعات؛ کسب دانش؛ مجموعه ای تقریب؛ كاهش دادن؛ ماتریس
کلمات کلیدی انگلیسی
Rough set; Covering information system; Knowledge acquisition; Set approximation; Reduct; Matrix
پیش نمایش مقاله
پیش نمایش مقاله  روش سریع برای کسب دانش در پوشش سیستم های اطلاعات با استفاده از عملیات ماتریس

چکیده انگلیسی

Covering rough set theory provides an effective approach to dealing with uncertainty in data analysis. Knowledge acquisition is a main issue in covering rough set theory. However, the original rough set methods are still expensive for this issue in terms of time consumption. To further improvement, we propose fast approaches to knowledge acquisition in covering information systems by employing novel matrix operations. Firstly, several matrix operations are introduced to compute set approximations and reducts of a covering information system. Then, based on the proposed matrix operations, the knowledge acquisition algorithms are designed. In the end, experiments are conducted to illustrate that the new algorithms can dramatically reduce the time consumptions for computing set approximations and reducts of a covering information system, and the larger the scale of a data set is, the better the new algorithms perform.