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12

Are actuaries competitive in data science?

Open-access content Tuesday 5th December 2017 — updated 5.50pm, Wednesday 29th April 2020

It has been said that actuaries were the first ‘data scientists’ – but can we still describe ourselves as such, asks Colin Priest

2


A data scientist exists in the intersection of three skill sets: coding/programming; mathematics and statistics; and domain knowledge. Coding allows data scientists to manipulate data and create algorithms. Mathematics and statistics allow them to use data to predict future outcomes. Then data scientists need to understand people and business rules to solve practical business problems. People with all three of these skills are rare and valuable. 


Does actuarial training stack up?

In recent years, when I started teaching data analytics to actuaries, I discovered to my surprise that it's no longer compulsory for them to learn programming. And while actuaries learn statistics and mathematics, their education is narrowly focused. But actuaries do know a lot about insurance, about the law and regulations, underwriting, claims management and product design.

The worry is that this gap is negatively affecting the employment prospects of actuaries. Actuarial employers are increasingly expecting their staff to have the same skillset as data scientists. In its most recent survey of actuarial employers, the Singapore Actuarial Society reported that almost half expected new actuaries to write code, manipulate data and use statistical software. 

A further theme in the employer feedback was that actuaries need to "improve on programming skills". In the US, data scientists have increasingly been hired for roles that were traditionally actuarial.

Historically, actuaries have adapted to new techniques and technologies. In the 17th century, actuaries developed deterministic methods for managing life insurance. In the early 20th century, they applied probabilistic methods to general insurance. And, in the early 21st century, actuaries were among the first to adopt enterprise risk management. Now, in the 2010s, it's time for actuaries to further improve their skills.


Stats-1_SOAPBOX
Stats-2_SOAPBOX


Here's what actuaries need to learn:

  • Data manipulation and joining tables
  • The theory of machine learning (training versus testing, overtraining)
  • Machine learning algorithms
  • Mathematics and statistics: missing value imputation, optimisation, numerical estimation.

The good news is that modern technology makes this easier than ever. Data manipulation doesn't need to be a time-consuming manual process - modern drag and drop software allows you to visually design data pipelines that manipulate data and merge data sources. There are free online courses about learning from data that teach machine learning theory. And you don't need to learn dozens of arcane algorithms, nor spend months writing code to implement them. 

The latest technology is automated machine learning, expert software that automatically finds the best algorithms for your data, applying best practices and avoiding overtraining.

With these technological tools, actuaries can step up and be competitive in data science. Actuaries' business knowledge and communication skills can give them a competitive advantage.


Colin Priest is an actuary turned data scientist at DataRobot, Singapore

This article appeared in our December 2017 issue of The Actuary.
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