| 摘要 |
A method comprises generating a first classification model, e.g., metadata-based, for determining whether a video belongs to a category; generating a second classification model, e.g., content-based, for determining whether the video belongs to a category, the first classification model and second classification model being based on different modalities; and generating a fusion model that blends the categorization results of the models. Each classification model may classify the video to multiple categories. During operation, a method obtains a video; uses the first classification model, the second classification model and the fusion model to determine whether the video belongs to a category; and indexes the video in a video index. The method may enable selection of a category corresponding to the video search results. The category may be identified based on a query profile, which may be learned from users' query logs or popular queries and click history.
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