An Advanced Information Integration and Retrieval Method of Synchronized Multimedia Streams

提出了一种搜索语义同步媒体流的二维检索模型。该理论模型的有效性也通过严格的实验得到了验证。支持同步媒体流的部分检索的传统IR系统检索“原子单元”，例如底层媒体流的幻灯片、页面和镜头，所述底层媒体流分别诸如演示文稿、电子书和讲座视频。相比之下，该模型基于扩展检索单元的概念，因此检索动态集成的媒体流，该媒体流包括沿着和跨媒体流的多个原子单元。该模型优于（a）基于原子检索单元的常规系统，（B）一维检索系统，其将检索单元扩展到相同媒体的几个原子单元，以及（c）跨媒体检索系统，其将原子检索单元扩展到几个媒体流单元。

Two dimensional retrieval model for searching semantically synchronized media streams has been proposed. The effectiveness of this theoretically-based model has also been verified through rigorous experiments. Conventional IR systems, which support partial retrieval of synchronized media streams, retrieve "atomic units", for example slides, pages and shots of underlying media streams such aspresentations, electronic books, and lecture videos respectively. In contrast, this model is based upon the concept of an extended retrieval unit and thus retrieves dynamically integrated media streams comprising several atomic units both along and across media streams. The model outperforms (a) conventional systems based on atomic retrieval units, (b) single dimensional retrieval systems, which extend retrieval units over several atomic units of the same media and (c) cross-media retrieval systems, which extend atomic retrievalunits across several media stream units.