The AI software told banks to deny millions of legitimate purchases, at a time when consumers had been scrambling for toilet paper and other essentials. Seasonal variations, data-quality changes or momentous events - such as the pandemic - all can lead to a string of bad AI predictions. Also to blame was its AI system learning from corrupted data, the company said. Arize AI, which raised $38 million from investors last month, enables monitoring for customers including Uber, Chick-fil-A and Procter & Gamble. Zoldi said consumer habits were changing too fast to rewrite the AI system.

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