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IBM Watson supercomputer

By Rahul Awati

What is the IBM Watson supercomputer?

Watson was a supercomputer designed and developed by IBM. This advanced computer combined artificial intelligence (AI), automation and sophisticated analytics capabilities to deliver optimal performance as a "question answering" machine. The supercomputer was named for Thomas J. Watson, former chairman and CEO who renamed Computing-Tabulating-Recording Company, founded in 1911, to International Business Machines in 1924.

History of IBM Watson

In a fall 2010 article published in AI Magazine, IBM researchers reported on their three-year journey to build a computer system that could compete with humans in answering questions correctly in real time on the TV quiz show Jeopardy!. This project led to the design of IBM's DeepQA architecture and software and the Watson supercomputer.

By late 2010, Watson's question-answering technology was advanced enough to enable it to win about 70% of games against former human Jeopardy! champions. In 2011, its capabilities were put to the test in a real game on Jeopardy!. Watson challenged two top-ranked players -- Jeopardy! superstars Ken Jennings and Brad Rutter -- and famously beat them. The Watson avatar sat between the two contestants, as a human competitor would, while its considerable bulk sat on a different floor of the building. Like the human contestants, Watson didn't have internet access. However, unlike them, it had the power of AI at its disposal. Watson's famous victory against two human Jeopardy! champions helped showcase the power of AI and its potential for solving business challenges.

Following this accomplishment, IBM researchers claimed that Watson's DeepQA architecture was both effective and extensible and, therefore, could be used to combine, deploy, evaluate and advance numerous algorithmic techniques in the field of question answering. A day after the Jeopardy! victory, IBM also advertised that it was exploring ways to apply Watson's capabilities for real-world applications in healthcare, law, academia, finance, transportation, retail and other sectors.

How Watson worked

Watson's question-answering capabilities were honed over several years. The more information it was fed, the more its ability to respond correctly improved. A lot of the information came from commercial sources, like World Book Encyclopedia, and online sources, like Wikipedia and Project Gutenberg. By 2011, it could hold information equivalent to almost 1 million books and compile information from numerous sources to answer a variety of questions.

Watson's information-holding capability partly accounts for its ability to answer complex questions that included numerous subtleties and wordplay -- questions like the ones that frequently appeared on Jeopardy!. In contrast, older question-answering software and search engines could only analyze simple questions and provide straightforward answers, making Watson a true innovation in the field of AI.

When Watson was asked a question, more than 100 algorithms analyzed it and put forth many different plausible answers at the same time. A different set of algorithms ranked the answers and looked for evidence to support or refute each answer. Based on the supporting evidence, each answer was given an individual score. The highest-ranking answer would become the final answer that Watson would display in response to the asked question. Watson completed all these steps in just about three seconds, about the same time most humans would take to listen to a question, analyze it and then propose an answer.

Watson technical details

Since Watson was a supercomputer, it ran on a cluster of dozens of IBM Power 750 servers -- 90 to be specific. Its architecture consisted of 10 racks holding these servers and 2,880 processor cores. Watson came installed with IBM's DeepQA software, which incorporated natural language processing (NLP) and machine learning and was specifically designed for information retrieval purposes.

Some of the other components of IBM Watson were the following:

IBM Watson: A decade after Jeopardy!

Watson was the brainchild of IBM Research, one of the world's largest research organizations that has 12 labs globally. In 2011, IBM Research was headed by John Kelly. Kelly, often called the "Father of Watson," was one of the biggest supporters and proponents of Watson. At the time of Watson's Jeopardy! victory, Kelly said that Watson would eventually evolve into a commercial product. This product was expected to provide advanced, state-of-the-art information that could potentially improve the intelligence of decision-makers in many industries.

Over the next decade, Watson became synonymous with AI. However, numerous challenges and IBM's missteps prevented Watson from reaching its expected heights. Today, Watson is not a single computer, but rather a suite of products that enable organizations to infuse AI and automation into business workflows. The latest product in the Watson suite is called Watsonx, an enterprise-ready AI and data platform that organizations can use to train and deploy machine learning models for a range of applications and use cases.

IBM Watson suite of enterprise products

The Watson suite includes numerous products, each with its own unique selling proposition and purpose. However, all products are based on AI technology and aimed at helping organizations incorporate AI into core business workflows, including workflows for human resources, customer service, software development, legal and knowledge management.

These products constitute the Watson suite:

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05 Oct 2023

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