Conceptual modeling has long been recognized as the primary means to enable software development in information systems and data engineering. Conceptual modeling provides languages, methods and tools to understand and represent the application domain; to elicit, conceptualize and formalize system requirements and user needs; to communicate systems designs to all stakeholders; and to formally verify and validate systems design on high levels of abstraction. Recently, ontologies added an important tool to conceptualize and formalize system specification. The International Conference on Conceptual Modeling - ER - provides the premiere forum for presenting and discussing current research and applications in which the major emphasis is centered on conceptual modeling. Topics of interest span the entire spectrum of conceptual modeling, including research and practice in areas such as theories of concepts and ontologies underlying conceptual modeling, methods and tools for developing and communicating conceptual models, and techniques for transforming conceptual models into effective implementations. The scientific program of ER 2009 features several activities running in parallel.

This book constitutes the refereed proceedings of the 9th International Symposium on String Processing and Information Retrieval, SPIRE 2002, held in Lisbon, Portugal in September 2002.The 19 revised full papers and 6 short papers presented together with 3 invited papers were carefully reviewed and selected from 54 submissions. the papers are organzied in topical sections on string matching, string processing, Web ranking and link analysis, pattern matching, digital libraries and applications, approximate searching, and indexing techniques.

Thisvolumeprovidesacomprehensive, state-of-the-artsurveyofconceptual- deling. It includes invited papers, research papers, and abstracts of industrial presentationsgivenatER2000, the19thInternationalConferenceonConceptual Modeling, heldinSaltLakeCity, Utah. Continuinginitslongtraditionofattr- ting the leading researchers and practitioners in advanced information systems design and implementation, the conference provided a forum for presenting and discussing current research and applications in which the major emphasis was on conceptual modeling. The conference topics re?ected this strong conceptu- modeling theme while recognizing important, emerging developments resulting from recent technological advances. The call for papers for the research track resulted in the submission of 140 papersfromresearchersaroundtheworld. Ofthese,37wereselectedforinclusion in the program. The authors of these papers are from 14 countries. These papers represent a variety of topics including: - Database integration - Temporal and active database modeling - Database and data warehouse design techniques - Analysis patterns and ontologies - Web-based information systems - Business process modeling - Conceptual modeling and XML - Engineering and multimedia application modeling - Object-oriented modeling - Applying object-oriented technology - Quality in conceptual modeling - Application design using UML Three internationally recognized scholars in the area of conceptual modeling also submitted papers and delivered keynote speeches: - John Mylopoulos: From Entities and Relationships to Social Actors and - pendencies - Salvatore T. March: Re?ections on Computer Science and Information - stems Research - PhilipA. Bernstein: GenericModelManagement-WhyWeNeedItandHow to Get There In addition to the research papers and invited papers, the conference - cluded two workshops, two pre-conference full-day tutorials, four short tuto- als, four industrial sessions, and two provocative panel discuss

This book deals with a hard problem that is inherent to human language: ambiguity. In particular, we focus on author name ambiguity, a type of ambiguity that exists in digital bibliographic repositories, which occurs when an author publishes works under distinct names or distinct authors publish works under similar names. This problem may be caused by a number of reasons, including the lack of standards and common practices, and the decentralized generation of bibliographic content. As a consequence, the quality of the main services of digital bibliographic repositories such as search, browsing, and recommendation may be severely affected by author name ambiguity. The focal point of the book is on automatic methods, since manual solutions do not scale to the size of the current repositories or the speed in which they are updated. Accordingly, we provide an ample view on the problem of automatic disambiguation of author names, summarizing the results of more than a decade of research on this topic conducted by our group, which were reported in more than a dozen publications that received over 900 citations so far, according to Google Scholar. We start by discussing its motivational issues (Chapter 1). Next, we formally define the author name disambiguation task (Chapter 2) and use this formalization to provide a brief, taxonomically organized, overview of the literature on the topic (Chapter 3). We then organize, summarize and integrate the efforts of our own group on developing solutions for the problem that have historically produced state-of-the-art (by the time of their proposals) results in terms of the quality of the disambiguation results. Thus, Chapter 4 covers HHC - Heuristic-based Clustering, an author name disambiguation method that is based on two specific real-world assumptions regarding scientific authorship. Then, Chapter 5 describes SAND - Self-training Author Name Disambiguator and Chapter 6 presents two incremental author name disambiguation methods, namely INDi - Incremental Unsupervised Name Disambiguation and INC- Incremental Nearest Cluster. Finally, Chapter 7 provides an overview of recent author name disambiguation methods that address new specific approaches such as graph-based representations, alternative predefined similarity functions, visualization facilities and approaches based on artificial neural networks. The chapters are followed by three appendices that cover, respectively: (i) a pattern matching function for comparing proper names and used by some of the methods addressed in this book; (ii) a tool for generating synthetic collections of citation records for distinct experimental tasks; and (iii) a number of datasets commonly used to evaluate author name disambiguation methods. In summary, the book organizes a large body of knowledge and work in the area of author name disambiguation in the last decade, hoping to consolidate a solid basis for future developments in the field.

This book constitutes the refereed proceedings of the 38th International Conference on Conceptual Modeling, ER 2019, held in Salvador, Brazil, in November 2019.The 22 full and 22 short papers presented together with 4 keynotes were carefully reviewed and selected from 142 submissions. This events covers a wide range of topics, covered in the following sessions: conceptual modeling, big data technology I, process modeling and analysis, query approaches, big data technology II, domain specific models I, domain specific models II, decision making, complex systems modeling, model unification, big data technology III, and requirements modeling.