Constitutes the refereed post-proceedings of the First International Conference on Digital Libraries, DELOS 2007, held in Pisa, Italy, in February 2007. This book presents 33 revised full papers that were reviewed and selected during two rounds of reviewing and improvement for inclusion.

Similarity Search.- MESSIF: Metric Similarity Search Implementation Framework.- Image Indexing and Retrieval Using Visual Terms and Text-Like Weighting.- Architectures.- A Reference Architecture for Digital Library Systems: Principles and Applications.- DelosDLMS - The Integrated DELOS Digital Library Management System.- ISIS and OSIRIS: A Process-Based Digital Library Application on Top of a Distributed Process Support Middleware.- An Architecture for Sharing Metadata Among Geographically Distributed Archives.- Integration of Reliable Sensor Data Stream Management into Digital Libraries.- Personalization.- Content-Based Recommendation Services for Personalized Digital Libraries.- Integrated Authoring, Annotation, Retrieval, Adaptation, Personalization, and Delivery for Multimedia.- Gathering and Mining Information from Web Log Files.- Interoperability.- Modelling Intellectual Processes: The FRBR - CRM Harmonization.- XS2OWL: A Formal Model and a System for Enabling XML Schema Applications to Interoperate with OWL-DL Domain Knowledge and Semantic Web Tools.- A Framework and an Architecture for Supporting Interoperability Between Digital Libraries and eLearning Applications.- Evaluation.- An Experimental Framework for Interactive Information Retrieval and Digital Libraries Evaluation.- The Importance of Scientific Data Curation for Evaluation Campaigns.- An Approach for the Construction of an Experimental Test Collection to Evaluate Search Systems that Exploit Annotations.- Evaluation and Requirements Elicitation of a DL Annotation System for Collaborative Information Sharing.- INEX 2002 - 2006: Understanding XML Retrieval Evaluation.- Miscellaneous.- Task-Centred Information Management.- Viewing Collections as Abstractions.- Adding Multilingual Information Access to theEuropean Library.- The OntoNL Framework for Natural Language Interface Generation and a Domain-Specific Application.- Preservation.- Evaluating Preservation Strategies for Electronic Theses and Dissertations.- Searching for Ground Truth: A Stepping Stone in Automating Genre Classification.- Video Data Management.- Video Transcoding and Streaming for Mobile Applications.- Prototypes Selection with Context Based Intra-class Clustering for Video Annotation with Mpeg7 Features.- Automatic, Context-of-Capture-Based Categorization, Structure Detection and Segmentation of News Telecasts.- 3D Objects.- Description, Matching and Retrieval by Content of 3D Objects.- 3D-Mesh Models: View-Based Indexing and Structural Analysis.- Similarity-Based Retrieval with MPEG-7 3D Descriptors: Performance Evaluation on the Princeton Shape Benchmark.- Peer to Peer.- Application of the Peer-to-Peer Paradigm in Digital Libraries.- Efficient Search and Approximate Information Filtering in a Distributed Peer-to-Peer Environment of Digital Libraries.- Management of and Access to Virtual Electronic Health Records.