Collaborative filtering is a concept of one-to-one marketing. Which of the following are characteristics of collaborative filtering?

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It uses survey data to find out how specific customers might behave when certain products are presented to them

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It uses data about other people similar to you to guess what you might like

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It tries to change the behavior of customers by providing incentives to accomplish the desired action

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It is based on the collection of data about your own online activity

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