I just read about how, to train AIML to do sentiment analysis, some projects use Amazon reviews for data.<p>See, every Amazon review has to be accompanied by a star rating. if the star rating is poor, then the accompanying text is likely to be negative. And vice versa.<p>Blew my mind.<p>It's totally self-contained. No need to hire humans in Kenya or India to rate a piece of text to determine and label its sentiment.<p>I thought this was a highly creative way to approach the "data problem".<p>I want to learn more about such creative solutions to the "data problem".<p>Please share what you know about such creative solutions (or your ideas on creative solutions to the "data problem") on this page so we can have a resource to reference.<p>Thank you.