The Morning Download: In Machine Learning Age, Walmart Executive Finds Scale Helps

Today, bigness means the retailer's machine learning efforts benefit from data generated by people who shop at Walmart every week and activities around the tens of millions of items on its website. "Scarcity of data is what makes artificial intelligence really hard," Mr. King told Ms. Castellanos. "If you have volumes of data like we do, you can really apply it much quicker across the board," he said. Mr. King shared his take on several technologies, some not quite ready for prime time. Overseas traders charged with hacking SEC's public filings site.