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Esfandiar Bandari
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109 followers
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Now that the dust settled, I wrote a post on Linkedin and Microsoft M&A. Ironically, Blogger is asking me to post this one on Google Plus :-)

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Andy Borowitz great satire on Donald Trump in New Yorker

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Brilliant and posted by Peter Norvig.

Merry Xmas Anna

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Past Vlab Events.

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Determining the optimal number of clusters: 3 must known methods

Partitioning methods, such as k-means clustering require also the users to specify the number of clusters to be generated.

One fundamental question is: How to choose the right number of expected clusters (k)?

In this article, we’ll describe different methods for determining the optimal number of clusters for k-means, PAM and hierarchical clustering . These methods include direct methods and statistical testing approaches.

http://www.sthda.com/english/wiki/determining-the-optimal-number-of-clusters-3-must-known-methods-unsupervised-machine-learning

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The earliest stars in the universe were formed about 100-200 million years after the big bang. These stars were rich in hydrogen and helium, but had very little of the heavier elements. Spectrographic techniques have led to the identification of some of these oldest of stars in recent times, including some in the dense galactic bulge at the center of the Milky Way.

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