The last years have seen an explosion in the demand for data scientists. In this paper, I introduce the reader to the term, analyze the rise of the implied informational and quantitative methods, and give an overview of the most common ones. I close by pointing out the strengths and weaknesses of these methods as well as their complementarities with other ``traditional'' ones.
This paper uses advanced methods from time-series econometrics to perform a spectral analysis (univariate and bivariate) of monthly series of growth in money (M1a and M4a) and in prices (CPI) for Mexico. This analysis allows the identification of the most important frequencies for each series, as well as of some measures of association between series, at different frequencies. In particular, zero frequency measures, typically used for identifying the long-run relationship between money and prices, are obtained as well. In addition to the analysis of the entire series (1969-2010), a rolling sample analysis for the zero frequency is also carried out to allow for changes in the long-run relationships.
Countries around the world have been considering the possibility of implementing contact tracing with the use of cellphones. What is contact tracing? Contact tracing is keeping track of what people you get in close proximity to, thus being able to warn you if any of those people tested positive for Covid19 after that; enabling you to take appropriate measures...
Chart: World Health Organization, May 21, 2020
Last update: August 2022
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