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POWDER: Use Cases and Requirements
Abstract This document sets out the use cases and requirements that have motivated the development of the Protocol for Web Description Resources (POWDER). The use cases address social and commercial needs to provide information about groups of Web resources, such as those available from a Web site, to aid the annotation and/or personalization of content for end users in varying delivery contexts. Status of this document
SIREn: Efficient semi-structured Information Retrieval for Lucene Efficient, large scale handling of semi-structured data (including RDF ) is increasingly an important issue to many web and enterprise information reuse scenarios. Querying graph structured data (RDF) is commonly achieved using specific solutions, called triplestores , typically based on DBMS backends. In Sindice we however needed something much more scalable than DBMS and with the desirable features of the typical Web Search engines: top-k query processing, real time updates, full text search, distributed indexes over shards, etc. While Lucene has long offered these capabilities, its native capabilities are not intended for large semi-structured document collections (or documents with very different schemas).
SIREn: Semantic Information Retrieval Engine