| 摘要 |
A method for targeted advertisement is provided, for which one or more tags relating to an advertisement is/are accessed, one or more of the most representative activities for the tag(s) is/are determined, and the advertisement is targeted to the one or more most representative activities. In addition, for each of a plurality of tags, one or more of the most representative activities is/are determined based on term frequency-inverse document frequency, such that an activity is relatively more representative of a tag if the tag is more uniquely and/or frequently associated with the activity. The advertisement is delivered to participants of the activities, and optionally during a time interval relevant to the activities.
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