Advances in Data Mining. Applications and Theoretical by Claus Weihs, Gero Szepannek (auth.), Petra Perner (eds.)

By Claus Weihs, Gero Szepannek (auth.), Petra Perner (eds.)

This booklet constitutes the refereed lawsuits of the ninth commercial convention on information Mining, ICDM 2009, held in Leipzig, Germany in July 2009.

The 32 revised complete papers provided have been conscientiously reviewed and chosen from a hundred thirty submissions. The papers are geared up in topical sections on info mining in medication and agriculture, info mining in advertising, finance and telecommunication, info mining in strategy keep an eye on, and society, info mining on multimedia information and theoretical elements of information mining.

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Extra info for Advances in Data Mining. Applications and Theoretical Aspects: 9th Industrial Conference, ICDM 2009, Leipzig, Germany, July 20 - 22, 2009. Proceedings

Example text

Hence, in this case, adding more PCs obscure the detection of problematic fermentations. For dataset E, results were different. Since the number of fermentations –including normal and problematic- that classified all their samples in the same cluster was 7 using 3 (4, 7, 11, 12, 18, 23, 24) or 5 PCs (5, 9, 11, 19, 20, 23, 24), and 10 using 8 PCs (2, 3, 4, 5, 9, 11, 19, 22, 23, 24). Contrary to dataset A, more PCs improve the total classification quality of dataset E according to the first criteria.

RBF. For the radial basis function network, a radius of 1 is used for the radial basis neurons in the hidden layer. 001 is met, uses a maximum number of 70 neurons, which results in a relatively long training time. RegTree. For the regression tree, the default settings of classregtree perform optimal; the full tree is pruned automatically and the minimum number of training examples below which no split of a tree node should be done is 10. SVR. 0. 2 is also determined as yielding the best results on F04.

The function here is called ε -insensitive loss function. Other kinds of functions can be used, some of which are presented in chapter 5 of [8]. To estimate f (x), a quadratic problem must be solved, of which the dual form, according to [17] is as follows: maxα ,α ∗ − N N 1 N N (αi − αi∗ )(α j − α ∗j )K(xi , x j ) − ε ∑ (αi + αi∗ ) + ∑ yi (αi − αi∗ ) (3) ∑ ∑ 2 i=1 j=1 i= j i=1 with the constraint that ∑Nj=1 (αi − αi∗ ) = 0, αi , αi∗ ∈ [0,C]. The regularization parameter C > 0 determines the tradeoff between the flatness of f (x) and the allowed number of 32 G.

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