Investors want to know logic behind machine learning

Big data tools a hard sell without clear explanations, says Winton researcher

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Machine-learning techniques that are rapidly being pursued by quant hedge funds need to be interpretable for investors to buy into them, Tuncer Aysal, a researcher at Winton, has warned.

Speaking at a big data conference in London in June, he said: "It's really hard to explain to a client, give me $10 million, I'll just pass it through this black box and it tells me to buy some Apple shares... Trust me it's going to work. That's a hard sell."

He said the positions generated through machine

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