Methodology -- Overview of INEX 2006 -- The Wikipedia XML Corpus -- INEX 2006 Evaluation Measures -- Choosing an Ideal Recall-Base for the Evaluation of the Focused Task: Sensitivity Analysis of the XCG Evaluation Measures -- Ad Hoc Track -- A Method of Preferential Unification of Plural Retrieved Elements for XML Retrieval Task -- CISR at INEX 2006 -- Compact Representations in XML Retrieval -- CSIRO's Participation in INEX 2006 -- Dynamic Element Retrieval in a Semi-structured Collection -- Efficient, Effective and Flexible XML Retrieval Using Summaries -- Evaluating Structured Information Retrieval and Multimedia Retrieval Using PF/Tijah -- EXTIRP: Baseline Retrieval from Wikipedia -- Filtering and Clustering XML Retrieval Results -- GPX - Gardens Point XML IR at INEX 2006 -- IBM HRL at INEX 06 -- Indexing "Reading Paths" for a Structured Information Retrieval at INEX 2006 -- Influence Diagrams and Structured Retrieval: Garnata Implementing the SID and CID Models at INEX'06 -- Information Theoretic Retrieval with Structured Queries and Documents -- SIRIUS XML IR System at INEX 2006: Approximate Matching of Structure and Textual Content -- Structured Content-Only Information Retrieval Using Term Proximity and Propagation of Title Terms -- Supervised and Semi-supervised Machine Learning Ranking -- The University of Kaiserslautern at INEX 2006 -- TopX - AdHoc Track and Feedback Task -- Tuning and Evolving Retrieval Engine by Training on Previous INEX Testbeds -- Using Language Models and the HITS Algorithm for XML Retrieval -- Using Topic Shifts in XML Retrieval at INEX 2006 -- XSee: Structure Xposed -- Natural Language Processing Track -- Shallow Parsing of INEX Queries -- Using Rich Document Representation in XML Information Retrieval -- NLPX at INEX 2006 -- Heterogeneous CollectionTrack -- The Heterogeneous Collection Track at INEX 2006 -- Probabilistic Retrieval Approaches for Thorough and Heterogeneous XML Retrieval -- Multimedia Track -- The INEX 2006 Multimedia Track -- Fusing Visual and Textual Retrieval Techniques to Effectively Search Large Collections of Wikipedia Images -- Social Media Retrieval Using Image Features and Structured Text -- XFIRM at INEX 2006. Ad-Hoc, Relevance Feedback and MultiMedia Tracks -- Interactive Track -- The Interactive Track at INEX 2006 -- Use Case Track -- XML-IR Users and Use Cases -- A Taxonomy for XML Retrieval Use Cases -- What XML-IR Users May Want -- Document Track -- Report on the XML Mining Track at INEX 2005 and INEX 2006 -- Classifying XML Documents Based on Structure/Content Similarity -- Document Mining Using Graph Neural Network -- Evaluating the Performance of XML Document Clustering by Structure Only -- FAT-CAT: Frequent Attributes Tree Based Classification -- Unsupervised Classification of Text-Centric XML Document Collections -- XML Document Mining Using Contextual Self-organizing Maps for Structures -- XML Document Transformation with Conditional Random Fields -- XML Structure Mapping.