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Ambuj Tewari

Ambuj Tewari

The Conversation

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AI is replacing humans in responding to some surveys – but simulated opinions are not the same as public opinion

AI models can simulate the answers thousands of people would provide to a survey, but the results aren’t a reliable measure of what real people...

27.05.2026 10

The Conversation

Ambuj Tewari

Why it’s so hard to tell if a piece of text was written by AI – even for AI

There are several methods for detecting whether a piece of text was written by AI. They all have limitations – and probably always will.

18.12.2025 10

The Conversation

Ambuj Tewari

When fake data is a good thing – how synthetic data trains AI to solve real problems

To overcome two challenges in training AI – scarce or hard-to-get data and data privacy – researchers have come up with a counterintuitive...

18.11.2025 10

The Conversation

Ambuj Tewari

What is reinforcement learning? An AI researcher explains a key method of teaching machines – and how it relates to training your dog

Computing pioneer Alan Turing suggested training machines with rewards and punishments. Two computer scientists put the idea into practice in the...

07.04.2025 10

The Conversation

Ambuj Tewari