Overview of INEX 2004.- Overview of INEX 2004.- Methodology.- Narrowed Extended XPath I (NEXI).- NEXI, Now and Next.- If INEX Is the Answer, What Is the Question?.- Reliability Tests for the XCG and inex-2002 Metrics.- Ad Hoc Retrieval.- Component Ranking and Automatic Query Refinement for XML Retrieval.- MultiText Experiments for INEX 2004.- Logic-Based XML Information Retrieval for Determining the Best Element to Retrieve.- An Algebra for Structured Queries in Bayesian Networks.- IR of XML Documents - A Collective Ranking Strategy.- TRIX 2004 - Struggling with the Overlap.- The Utrecht Blend: Basic Ingredients for an XML Retrieval System.- Hybrid XML Retrieval Revisited.- Analyzing the Properties of XML Fragments Decomposed from the INEX Document Collection.- A Voting Method for XML Retrieval.- Mixture Models, Overlap, and Structural Hints in XML Element Retrieval.- GPX - Gardens Point XML Information Retrieval at INEX 2004.- Hierarchical Language Models for XML Component Retrieval.- Ranked Retrieval of Structured Documents with the S-Term Vector Space Model.- Merging XML Indices.- DocBase - The INEX Evaluation Experience.- Ad Hoc Retrieval and Relevance Feedback.- TIJAH at INEX 2004 Modeling Phrases and Relevance Feedback.- Flexible Retrieval Based on the Vector Space Model.- Relevance Feedback.- Relevance Feedback for XML Retrieval.- Ad Hoc Retrieval and Heterogeneous Document Collection.- A Universal Model for XML Information Retrieval.- Cheshire II at INEX '04: Fusion and Feedback for the Adhoc and Heterogeneous Tracks.- Using a Relevance Propagation Method for Adhoc and Heterogeneous Tracks at INEX 2004.- Heterogeneous Document Collection.- Building and Experimenting with a Heterogeneous Collection.- A Test Platform for the INEX Heterogeneous Track.- EXTIRP 2004: Towards Heterogeneity.- Natural Language Processing of Topics.- NLPX at INEX 2004.- Analysing Natural Language Queries at INEX 2004.- Interactive Studies.- The Interactive Track at INEX 2004.- Interactive Searching Behavior with Structured XML Documents.