Before revision: When selling information , sometimes the seller can increase the revenue by giving away some partial information to change the buyers'belief about the information product, so the buyers may be more willing to purchase. This work studies the general problem of advertising information products by revealing some partial information.
After revision: When selling information , sometimes the seller can increase the revenue by giving away some partial information to change the buyers'belief about the information product, so the general problem of advertising information products by revealing some partial information.