Abstract: A method, apparatus and system for multimedia model retrieval are provided. The method includes: obtaining parameters of a multimedia model to be retrieved; performing a projection on the multimedia model according to the parameters of the multimedia model so as to obtain a projection image; performing a feature extraction on the projection image; matching a feature extraction result with stored model multimedia file information to obtain a retrieval result; training a support vector machine (SVM) with the multimedia model labeled by a user upon the retrieval result as a training sample set, performing a probability-based classification on the multimedia model by the SVM, and updating the retrieval result with a classification result. The system of the present invention illustrated by embodiments achieves favorable applicability and robustness, so that users may perform a rapid and precise retrieval on massive model data in these fields.

Abstract: The present invention relates to Mobile Broadcast Multicast technologies, and discloses a method for subscribing a purchase item in Mobile Broadcast Multicast Service, so that the subscription operation and update operation of the purchase item in BCAST are simplified, and the utilization of system resources is improved. In the present invention, a subscription management module generates a PurchaseItem identification, and sends this identification to a service distribution and adaptation module. Therefore, the PurchaseItem identification may be included in a PurchaseItem fragment sent to a user terminal from the service distribution and adaptation module. And, the function of identifying the purchase item is separated from the PurchaseItem fragment identification. Through sending a service request including the PurchaseItem identification to the subscription management module by the user terminal, the subscription of the purchase item is accomplished.

Abstract: A method, apparatus and system for multimedia model retrieval are provided. The method includes: obtaining parameters of a multimedia model to be retrieved; performing a projection on the multimedia model according to the parameters of the multimedia model so as to obtain a projection image; performing a feature extraction on the projection image; matching a feature extraction result with stored model multimedia file information to obtain a retrieval result; training a support vector machine (SVM) with the multimedia model labeled by a user upon the retrieval result as a training sample set, performing a probability-based classification on the multimedia model by the SVM, and updating the retrieval result with a classification result. The system of the present invention illustrated by embodiments achieves favorable applicability and robustness, so that users may perform a rapid and precise retrieval on massive model data in these fields.

Abstract: The present invention relates to Mobile Broadcast Multicast technologies, and discloses a method for subscribing a purchase item in Mobile Broadcast Multicast Service, so that the subscription operation and update operation of the purchase item in BCAST are simplified, and the utilization of system resources is improved. In the present invention, a subscription management module generates a PurchaseItem identification, and sends this identification to a service distribution and adaptation module. Therefore, the PurchaseItem identification may be included in a PurchaseItem fragment sent to a user terminal from the service distribution and adaptation module. And, the function of identifying the purchase item is separated from the PurchaseItem fragment identification. Through sending a service request including the PurchaseItem identification to the subscription management module by the user terminal, the subscription of the purchase item is accomplished.