Proceedings of the 2nd International Workshop on Semantic Search over the Web

We are witnessing the evolution of theWeb from a worldwide information space of linked documents to a global knowledge base, composed of semantically interconnected resources (to date, 25 billion RDF triples, interlinked by around 395 million RDF links). The continuous provision of semantic datasets from companies, government and public sector projects is leading to the creation of the so-called of Knowledge Each semantic dataset contributes to the extension of the global knowledge and increases its reasoning capabilities. In fact, researchers are now looking with growing interest at semantic issues in this huge amount of correlated data available on the Web. While there has been much progress made in research, specifically in the field of semantic technologies, from formal models to repositories and reasoning engines, the attention of many practitioners focuses on exploiting such semantic information to contribute to IR problems from a document-centric viewpoint. We believe that such a vast, and constantly growing, amount of semantic data raises data management issues that must be faced in the dynamic, highly distributed and heterogeneous environment such of the Web. In this context, the has evolved from a global information space of linked documents to a global database, where resources are identified (by means of URIs), semantically described (by means of RDF) and connected through RDF links. In this context the socalled of Knowledge results from the integration and collaboration of a plethora of small entities each one providing or requiring a unit of knowledge or reasoning capabilities. The second edition of the International Workshop on Semantic Search over the Web (SSW) will cover data management challenges related to the issues created by search over the through SemanticWeb technologies, proposing new models, languages and applications.