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# Vincent Granville's Blog – August 2020 Archive (13)

### Weekly Digest, August 31

Monday newsletter published by Data Science Central. Previous editions can be found here. The contribution flagged with a + is our selection for the picture of the week. To subscribe, follow this link.

Featured Resources and…

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Added by Vincent Granville on August 30, 2020 at 12:30pm — No Comments

### Thursday News, August 28

Here is our selection of featured technical resources and articles posted since Monday:

Announcements

Technical Contributions…

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Added by Vincent Granville on August 27, 2020 at 12:00pm — No Comments

### Weekly Digest, August 24

Monday newsletter published by Data Science Central. Previous editions can be found here. The contribution flagged with a + is our selection for the picture of the week. To subscribe, follow this…

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Added by Vincent Granville on August 23, 2020 at 1:30pm — No Comments

### The Exponential Mean: Alternative to Classic Means

Given n observations x1, ..., xn, the generalized mean (also called power mean) is defined as

The case p = 1 corresponds to the traditional arithmetic mean, while p = 0 yields the geometric mean, and p = -1…

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Added by Vincent Granville on August 22, 2020 at 2:30pm — No Comments

### Machine Learning vs. Statistics

Originally posted here.

Added by Vincent Granville on August 20, 2020 at 1:09pm — No Comments

### Thursday News, August 20

Here is our selection of featured articles and technical resources posted since Monday:

Resources

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Added by Vincent Granville on August 20, 2020 at 9:00am — No Comments

### Surprising Correlation Found in Covid-19 Data

It took me about 30 minutes to notice a spectacular correlation between two core metrics related to the virus, allowing me to make better predictions about the evolution of this pandemic in USA, and to provide possibly the best advice on how to reduce your risk of exposure, or at least how to buy some time in the war against this virus.

First, many metrics are useless, you need to pick up the most reliable ones. For instance, the number of people who officially tested positive is…

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Added by Vincent Granville on August 18, 2020 at 10:30am — 10 Comments

### Weekly Digest, August 17

Monday newsletter published by Data Science Central. Previous editions can be found here. The contribution flagged with a + is our selection for the picture of the week. To subscribe, follow this…

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Added by Vincent Granville on August 16, 2020 at 4:30pm — No Comments

### Thursday News, August 13

Here is our selection of featured technical resources and articles posted since Monday:

Announcements

Resources…

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Added by Vincent Granville on August 13, 2020 at 12:00pm — No Comments

### Weekly Digest, August 10

Monday newsletter published by Data Science Central. Previous editions can be found here. The contribution flagged with a + is our selection for the picture of the week. To subscribe, follow this link.

Featured Resources and…

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Added by Vincent Granville on August 9, 2020 at 2:30pm — No Comments

### Create Transformed, N-Dimensional Polygons with Covariance Matrix

The covariance matrix has many interesting properties, and it can be found in mixture models, component analysis, Kalman filters, and more. Developing an intuition for how the covariance matrix operates is useful in understanding its practical implications. This article will focus on a few important properties, associated proofs, and then some interesting practical applications, i.e., extracting transformed polygons from a Gaussian mixture's covariance matrix.

I have often found that…

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Added by Vincent Granville on August 8, 2020 at 3:30pm — No Comments

### Thursday News, August 6

Here is our selection of featured articles and resources posted since Monday.

Resources

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Added by Vincent Granville on August 6, 2020 at 11:30am — No Comments

### Weekly Digest, August 3

Monday newsletter published by Data Science Central. Previous editions can be found here. The contribution flagged with a + is our selection for the picture of the week. To subscribe, follow this link.

Announcements…

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Added by Vincent Granville on August 2, 2020 at 1:30pm — No Comments

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