Applied Data Mining by Guandong Xu

By Guandong Xu

Info mining has witnessed big advances in fresh many years. New learn questions and useful demanding situations have arisen from rising parts and functions in the numerous fields heavily on the topic of human lifestyle, e.g. social media and social networking. This booklet goals to bridge the space among conventional information mining and the most recent advances in newly rising details providers. It explores the Read more...

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3] B. Fu, Z. Wang, R. Pan, G. Xu and P. Dolog. Learning tree structure of label dependency for multi-label learning. In: PAKDD (1), pp. 159–70, 2012. [4] J. Han, H. Cheng, D. Xin and X. Yan. Frequent pattern mining: current status and future directions. Data Mining and Knowledge Discovery, 15(1): 55–86, 2007. [5] J. Han and M. Kamber. Data Mining: Concepts and Techniques. Morgan Kaufmann, 2006. [6] G. Xu, Y. Gu, P. Dolog, Y. Zhang and M. Kitsuregawa. Semrec: a semantic enhancement framework for tag based recommendation.

4. Zero correlations imply independence; that is, if all the correlation coefficients between two sets of components of a multivariate normal variable are zero, then the two sets of components are independent. 5. The family of multivariate normal distributions is closed under linear transformations and linear combinations. In other words, the distributions of linear transformations or linear combinations of multivariate normal variables are again multivariate normal. 6. The marginal distribution of any subset of components of a multivariate normal variable is also multivariate normal.

While certain methods can construct predictive models with high accuracy from high dimensional data, it is still of interest in many applications to reduce the dimension of the original data prior to any modeling of the data. In machine learning, dimensionality reduction is the process of reducing the number of random variables under consideration, and can be divided into feature selection and feature extraction. Feature selection approaches try to find a subset of the original variables (also called features or attributes).

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