کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
420415 | 683934 | 2009 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Size of random Galois lattices and number of closed frequent itemsets
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی کامپیوتر
نظریه محاسباتی و ریاضیات
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Given a sample of binary random vectors with i.i.d. Bernoulli(pp) components, that is equal to 1 (resp. 0) with probability pp (resp. 1−p1−p), we first establish a formula for the mean of the size of the random Galois lattice built from this sample, and a more complex one for its variance. Then, noticing that closed αα-frequent itemsets are in bijection with closed αα-winning coalitions, we establish similar formulas for the mean and the variance of the number of closed αα-frequent itemsets. This can be interesting for the study of the complexity of some data mining problems such as association rule mining, sequential pattern mining and classification.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Discrete Applied Mathematics - Volume 157, Issue 13, 6 July 2009, Pages 2945–2957
Journal: Discrete Applied Mathematics - Volume 157, Issue 13, 6 July 2009, Pages 2945–2957
نویسندگان
Richard Emilion, Gérard Lévy,