All posts by Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics Andrey Kamenov is a data scientist working for Advameg Inc. His background includes teaching statistics, stochastic processes and financial mathematics in Moscow State University and working for a hedge fund. His academic interests range from statistical data analysis to optimal stopping theory. Andrey also enjoys his hobbies of photography, reading and powerlifting.

IT, Defense and Surgery: a look at innovation in Massachusetts

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

Unlike some other states housing the most innovative companies, people don’t usually associate Massachusetts with a particular field. That makes a study of the patent portfolios of the local businesses even more appealing.

Let’s take a look at the word cloud first. It was generated using the abstracts of patents issued in the state in the recent years. The algorithm we utilized here is similar to Amazon’s Statistically Improbable Words (used for book tagging).

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Innovation in wireless communication

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

Just how important is wireless communication? In 2016, the word appeared in over 30 percent of all patents in the “Multiplex Communication” category.

According to a Cisco VNI White Paper, the company expects annual global internet traffic to increase threefold over the next five years. They also expect the traffic in the U.S. to grow slightly more slowly at a compound annual growth rate of 19 percent.

The white paper also predicts especially rapid growth in busy-hour traffic as well as smartphone traffic. There’s little doubt that we are in the need of faster communication technologies. Especially important are technologies for wireless communications.

Let’s take a look at the current state of innovation in the industry.

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Safety first: workplace injury rates are decreasing

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

Workplace safety in the U.S. is improving, and the fatal workplace injury rate is at an all-time low. In 2013 (the latest year for which data is currently available), there were only 3.3 cases per 100,000 workers across all industry sectors compared to 4.2 cases in 2006, a decrease of 19 percent.

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Classifying information security patents

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

The classification method devised in our earlier post can be utilized more efficiently. The number of topics we have to use to get meaningful clusters is quite high for the entire corpus. Above all, this significantly increases the computation time.

But what if we use the same approach to visualize just one technology class? It appears that the result is much more accessible and useful in this case.

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Visualizing U.S. utility patents

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

Exploring utility patents is not an easy task. The system that is currently in place, Cooperative Patent Classification, has its issues. For example, many patent applications have multiple classifications only partially related to the invention itself. This proves useful if you are searching for something specific — on the other hand, it is not as helpful if you are interested in patent mining or visualization.

Luckily, one can easily accomplish most of these tasks with the help of advanced computational techniques. The most promising approach is the use of Natural Language Processing to classify and visualize patents based on their abstracts.

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Professional services jobs are soaring, making it the fastest-growing industry

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

As we continue to explore the U.S. Census Bureau County Business Patterns data, we take a look at the fastest-growing industries. To visualize the dynamics, we plotted the relative change of job numbers from 2000 through 2012. The following figure contains the data for all industries employing at least 5 million people, starting from 100 percent in 2000.

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The fastest-growing sector in the West is dominated by one company

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

We have already looked into the changes in regional business profiles in the Southern and Midwestern United States. Today, we focus on studying the changes in the most recent County Business Patterns data in the western states and find out which is the fastest-growing sector.

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How your income level affects your health

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

In this post, we continue to study self-assessed health levels in the U.S. Once again, we’ll use the Health Index we introduced in a previous post. Today’s discussion will mostly focus on the relationship between health and income level.

In the aforementioned post, we already saw that health levels decline with age. On the other hand, income levels are generally positively correlated with age, so it’s not obvious from the start how income levels would affect health. Let’s see for ourselves:

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High-paid finance jobs are moving outside of large cities

Andrey Kamenov

Andrey Kamenov, Ph.D. Probability and Statistics

It shouldn’t be surprising to see that the average payroll is highly dependent on location. Let’s take the finance industry as an example. As evidenced by the U.S. Census Bureau’s County Business Patterns data, the average annual payroll by state in 2012 ranged from $48,000 (which is more than twice the annual payroll of someone working full-time for minimum wage) in South Dakota to $140,000 and $146,000 in Connecticut and Washington, D.C. respectively. The only state where an even higher number was registered is New York, with an average annual payroll of $190,000.

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