Arvind Narayanan

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Arvind Narayanan


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Arvind Narayanan is a professor of computer science at Princeton University and the director of the Center for Information Technology Policy. He was one of TIME's inaugural list of 100 most influential people in AI.

Narayanan led the Princeton Web Transparency and Accountability Project to uncover how companies collect and use our personal information. His work was also among the first to show how machine learning reflects cultural stereotypes.

He was awarded the Privacy Enhancing Technology Award for showing how publicly available social media and web information can be cross-referenced to find customers whose data has been "anonymized" by companies.

Narayanan prototyped and developed Do Not Track in HTTP header fields.

He is a co-author of
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Quotes by Arvind Narayanan  (?)
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“There is a striking parallel between the emergence of the modern state and the goals of the technology we have discussed in this chapter. In scaling society up from tribes and small groups, governments have had to confront precisely the problem of enabling secure commerce and other interactions among strangers. The methods may be very different, but the goal is a shared one. Although a maximalist vision for decentralization might involve dismantling the state, this is not really a viable vision, especially when others who share our democracy want a state. However, decentralization through technology is not necessarily in opposition to the state at all. In fact, they can be mutually beneficial. For example, assuming well-identified parties, transfers of smart property can use the block chain for efficient transfers and still use the court system if a dispute arises. We think the big opportunity for block chain technology is implementing decentralization in a way that complements the functions of the state, rather than seeking to replace them. It”
Arvind Narayanan, Bitcoin and Cryptocurrency Technologies: A Comprehensive Introduction

“Imagine an alternate universe in which people don’t have words for different forms of transportation—only the collective noun “vehicle.” They use that word to refer to cars, buses, bikes, spacecraft, and all other ways of getting from place A to place B. Conversations in this world are confusing. There are furious debates about whether or not vehicles are environmentally friendly, even though no one realizes that one side of the debate is talking about bikes and the other side is talking about trucks. There is a breakthrough in rocketry, but the media focuses on how vehicles have gotten faster—so people call their car dealer (oops, vehicle dealer) to ask when faster models will be available. Meanwhile, fraudsters have capitalized on the fact that consumers don’t know what to believe when it comes to vehicle technology, so scams are rampant in the vehicle sector.

Now replace the word “vehicle” with “artificial intelligence,” and we have a pretty good description of the world we live in.

Artificial intelligence, AI for short, is an umbrella term for a set of loosely related technologies. ChatGPT has little in common with, say, software that banks use to evaluate loan applicants. Both are referred to as AI, but in all the ways that matter—how they work, what they’re used for and by whom, and how they fail—they couldn’t be more different.”
Arvind Narayanan, AI Snake Oil: What Artificial Intelligence Can Do, What It Can’t, and How to Tell the Difference

“[All] modern chatbots are actually trained simply to predict the next word in a sequence of words. They generate text by repeatedly producing one word at a time. For technical reasons, they generate a “token” at a time, tokens being chunks of words that are shorter than words but longer than individual letters. They string these tokens together to generate text.

When a chatbot begins to respond to you, it has no coherent picture of the overall response it’s about to produce. It instead performs an absurdly large number of calculations to determine what the first word in the response should be. After it has output—say, a hundred words—it decides what word would make the most sense given your prompt together with the first hundred words that it has generated so far.

This is, of course, a way of producing text that’s utterly unlike human speech. Even when we understand perfectly well how and why a chatbot works, it can remain mind-boggling that it works at all.

Again, we cannot stress enough how computationally expensive all this is. To generate a single token—part of a word—ChatGPT has to perform roughly a trillion arithmetic operations. If you asked it to generate a poem that ended up having about a thousand tokens (i.e., a few hundred words), it would have required about a quadrillion calculations—a million billion.”
Arvind Narayanan, AI Snake Oil: What Artificial Intelligence Can Do, What It Can’t, and How to Tell the Difference

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