An Advanced Information Integration and Retrieval Method of Synchronized Multimedia Streams

提出了一种用于搜索语义同步媒体流的二维检索模型。通过严格的实验验证了该理论模型的有效性。支持同步媒体流的部分检索的传统IR系统分别检索诸如演示文稿、电子书和讲座视频等底层媒体流的诸如幻灯片、页面和镜头的“原子单元”。相反，该模型基于扩展检索单元的概念，并且因此检索包括沿媒体流和跨媒体流的几个原子单元的动态集成的媒体流。该模型优于(A)基于原子检索单元的传统系统，(B)将检索单元扩展到同一媒体的多个原子单元的一维检索系统，以及(C)跨媒体检索系统，其将原子检索单元扩展到多个媒体流单元。

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.