Showing papers by "Ron Weiss published in 1995"

Composition and search with a video algebra

Abstract: A new data model called algebraic video provides operations for composing, searching, navigating,and playing back digital video presentations. A prototype system helps find video segments of interest from existing collections and create new video presentations with algebraic combinations of these segments. >

Discover: a resource discovery system based on content routing

Abstract: We have built an HTTP based resource discovery system called Discover that provides a single point of access to over 500 WAIS servers. Discover provides two key services: query refinement and query routing . Query refinement helps a user improve a query fragment to describe the user's interests more precisely. Once a query has been refined and describes a manageable result set, query routing automatically forwards the query to the WAIS servers that contain relevant documents. Abbreviated descriptions of WAIS sites called content labels are used by the query refinement and query routing algorithms. Our experimental results suggest that query refinement in conjunction with the query routing provides an effective way to discover resources in a large universe of documents. Our experience with query refinement has convinced us that the expansion of query fragments is essential in helping one use a large, dynamically changing, heterogenous distributed information system.