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2019 | OriginalPaper | Buchkapitel

4. Machine Learning

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Abstract

Machine Learning is a huge and growing area. In this chapter, we cannot possibly even survey this area, but we can provide some context and some connections to probability and statistics that should make it easier to think about machine learning and how to apply these methods to real-world problems. The fundamental problem of statistics is basically the same as machine learning: given some data, how to make it actionable? For statistics, the answer is to construct analytic estimators using powerful theory. For machine learning, the answer is algorithmic prediction. Given a dataset, what forward-looking inferences can we draw? There is a subtle bit in this description: how can we know the future if all we have is data about the past? This is the crux of the matter for machine learning, as we will explore in the chapter.

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Fußnoten
1
This assumes that the hypothesis set is big enough to capture the entire training set (which it is for this example). We will discuss this trade-off in greater generality shortly.
 
2
This is a slight generalization of the classic coupon collector problem.
 
3
We have also set the random seed to a fixed value to make the figures reproducible in the Jupyter Notebook corresponding to this section.
 
4
At least up to a rotation of the resulting orthonormal basis.
 
5
At least up to a rotation of the resulting orthonormal basis.
 
6
We discussed the geometry of high-dimensional space when we covered the curse of dimensionality in the statistics chapter.
 
7
Note that these entries are constructed from the data using an estimator of the covariance matrix because we do not have the full probability densities at hand.
 
8
Note that we are using the init=random keyword argument for this example in order to illustrate this.
 
Literatur
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2.
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3.
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6.
Zurück zum Zitat E. Alpaydin, Introduction to Machine Learning (Wiley Press, New York, 2014) E. Alpaydin, Introduction to Machine Learning (Wiley Press, New York, 2014)
7.
Zurück zum Zitat H. Cuesta, Practical Data Analysis (Packt Publishing Ltd., Birmingham, 2013) H. Cuesta, Practical Data Analysis (Packt Publishing Ltd., Birmingham, 2013)
8.
Zurück zum Zitat A.J. Izenman, Modern Multivariate Statistical Techniques, vol. 1 (Springer, Berlin, 2008)CrossRef A.J. Izenman, Modern Multivariate Statistical Techniques, vol. 1 (Springer, Berlin, 2008)CrossRef
9.
Zurück zum Zitat A. Hyvärinen, J. Karhunen, E. Oja, Independent Component Analysis, vol. 46 (Wiley, New York, 2004) A. Hyvärinen, J. Karhunen, E. Oja, Independent Component Analysis, vol. 46 (Wiley, New York, 2004)
Metadaten
Titel
Machine Learning
verfasst von
José Unpingco
Copyright-Jahr
2019
DOI
https://doi.org/10.1007/978-3-030-18545-9_4

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