Last year, Clarifai introduced a drag-and-drop online tool called Custom Training that allows anyone to upload a few photos of specific items, say a brand of shoes, to train a classifier to recognize that type of items in other photos. Chatelain’s team created a site that connects Clarifai’s tool to Pinterest (when users paste in a board’s URL), develops a classifier of the style in the images, and filters out matching products from West Elm’s online catalog of about 5,000 items. (West Elm pays Clarifai based on the number of times it accesses the neural network.)

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