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We study this problem through three social learning model: a model based on summary measures of reviews, a model based on individual reviews and a model based on the combination of both. The dynamic pricing model built on the above three scenarios is a high-dimensional dynamic programming. To solve it effectively, we constructed an algorithm based on Smolyak grid points, which can change the grid points required in the value iteration process from exponential growth to polynomial growth. We demonstrate that it is more beneficial for the monopolist when customers read individual reviews after accounting for a product\u2019s average rating. This benefit is particularly pronounced when a monopolist sells a niche product. 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