178 research outputs found

    Table-to-Text: Generating Descriptive Text for Scientific Tables from Randomized Controlled Trials

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    Unprecedented amounts of data have been generated in the biomedical domain, and the bottleneck for biomedical research has shifted from data generation to data management, interpretation, and communication. Therefore, it is highly desirable to develop systems to assist in text generation from biomedical data, which will greatly improve the dissemination of scientific findings. However, very few studies have investigated issues of data-to-text generation in the biomedical domain. Here I present a systematic study for generating descriptive text from tables in randomized clinical trials (RCT) articles, which includes: (1) an information model for representing RCT tables; (2) annotated corpora containing pairs of RCT table and descriptive text, and labeled structural and semantic information of RCT tables; (3) methods for recognizing structural and semantic information of RCT tables; (4) methods for generating text from RCT tables, evaluated by a user study on three aspects: relevance, grammatical quality, and matching. The proposed hybrid text generation method achieved a low bilingual evaluation understudy (BLEU) score of 5.69; but human review achieved scores of 9.3, 9.9 and 9.3 for relevance, grammatical quality and matching, respectively, which are comparable to review of original human-written text. To the best of our knowledge, this is the first study to generate text from scientific tables in the biomedical domain. The proposed information model, labeled corpora and developed methods for recognizing tables and generating descriptive text could also facilitate other biomedical and informatics research and applications

    Content-based image retrieval of museum images

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    Content-based image retrieval (CBIR) is becoming more and more important with the advance of multimedia and imaging technology. Among many retrieval features associated with CBIR, texture retrieval is one of the most difficult. This is mainly because no satisfactory quantitative definition of texture exists at this time, and also because of the complex nature of the texture itself. Another difficult problem in CBIR is query by low-quality images, which means attempts to retrieve images using a poor quality image as a query. Not many content-based retrieval systems have addressed the problem of query by low-quality images. Wavelet analysis is a relatively new and promising tool for signal and image analysis. Its time-scale representation provides both spatial and frequency information, thus giving extra information compared to other image representation schemes. This research aims to address some of the problems of query by texture and query by low quality images by exploiting all the advantages that wavelet analysis has to offer, particularly in the context of museum image collections. A novel query by low-quality images algorithm is presented as a solution to the problem of poor retrieval performance using conventional methods. In the query by texture problem, this thesis provides a comprehensive evaluation on wavelet-based texture method as well as comparison with other techniques. A novel automatic texture segmentation algorithm and an improved block oriented decomposition is proposed for use in query by texture. Finally all the proposed techniques are integrated in a content-based image retrieval application for museum image collections

    Framework for Automatic Identification of Paper Watermarks with Chain Codes

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    Title from PDF of title page viewed May 21, 2018Dissertation advisor: Reza DerakhshaniVitaIncludes bibliographical references (pages 220-235)Thesis (Ph.D.)--School of Computing and Engineering. University of Missouri--Kansas City, 2017In this dissertation, I present a new framework for automated description, archiving, and identification of paper watermarks found in historical documents and manuscripts. The early manufacturers of paper have introduced the embedding of identifying marks and patterns as a sign of a distinct origin and perhaps as a signature of quality. Thousands of watermarks have been studied, classified, and archived. Most of the classification categories are based on image similarity and are searchable based on a set of defined contextual descriptors. The novel method presented here is for automatic classification, identification (matching) and retrieval of watermark images based on chain code descriptors (CC). The approach for generation of unique CC includes a novel image preprocessing method to provide a solution for rotation and scale invariant representation of watermarks. The unique codes are truly reversible, providing high ratio lossless compression, fast searching, and image matching. The development of a novel distance measure for CC comparison is also presented. Examples for the complete process are given using the recently acquired watermarks digitized with hyper-spectral imaging of Summa Theologica, the work of Antonino Pierozzi (1389 – 1459). The performance of the algorithm on large datasets is demonstrated using watermarks datasets from well-known library catalogue collections.Introduction -- Paper and paper watermarks -- Automatic identification of paper watermarks -- Rotation, Scale and translation invariant chain code -- Comparison of RST_Invariant chain code -- Automatic identification of watermarks with chain codes -- Watermark composite feature vector -- Summary -- Appendix A. Watermarks from the Bernstein Collection used in this study -- Appendix B. The original and transformed images of watermarks -- Appendix C. The transformed and scaled images of watermarks -- Appendix D. Example of chain cod

    Beyond Provenance: New Approaches to Interpreting the Chemistry of Archaeological Copper Alloys

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    For the last 180 years, scientists have been attempting to determine the ‘provenance’ (geological source) of the copper used in Bronze Age artefacts. However, despite advances in analytical technologies, the theoretical approach has remained virtually unchanged over this period, with the interpretative methodology only changing to accommodate the increasing capacity of computers. This book represents a concerted effort to think about the composition of Bronze Age metal as the product of human intentionality as well as of geology. It considers the trace element composition of the metal, the alloying elements, and the lead isotopic composition, showing how a combination of these aspects, along with archaeological context and typology, can reveal much more about the life history of such artefacts, expanding considerably upon the rather limited ambition of knowing where the ore was extracted. Beyond Provenance serves as a ‘how-to handbook’ for those wishing to look for evidence of human intentionality in the chemical patterning observed in bronzes

    The Ransom and Sarah Williams Farmstead: Post-Emancipation Transitions of an African American Family in Central Texas Vol. 1

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    In conjunction with the proposed construction of the southwest segment of State Highway 45 in southern Travis County, the Texas Department of Transportation sponsored archeological testing and data recovery efforts at the Ransom Williams farmstead. Prewitt and Associates, Inc., conducted an interdisciplinary community-based historic archeological study of the farmstead from 2005 through 2011. Extensive archival research reveals that the 45-acre farm was owned and occupied by Ransom Williams and his wife Sarah, both former slaves, from about 1871 to ca. 1905. The Williams family lived in the predominantly white rural community of Bear Creek, but they had connections to the nearby freedmen communities of Antioch Colony in northern Hays County and Manchaca in southern Travis County. The stories of the Ransom Williams family and their connections to these communities are enhanced by extensive oral history research, with over 46 hours of taped and transcribed interviews with 27 descendant community members. Data recovery investigations focused on a landscape archeological study to define the layout and design of the entire farmstead, including a stock pond and a network of dry-laid rock walls that facilitated water drainage, demarcated property boundaries, and formed livestock pens. Intensive hand excavations were used to examine features associated with the Williams house, outbuildings and activity areas, and a large trash midden. This work recovered more than 26,000 artifacts. They constitute an impressive material culture assemblage that is associated, with few exceptions, with the Williams family tenure on the land. The combined archival data, oral history interviews, and archeological evidence tell the fascinating story of how one African American farm family lived and thrived in central Texas during Reconstruction and into the Jim Crow era

    Design research in the Netherlands 2005 : proceedings of the symposium held on 19-20 May 2005, Eindhoven University of Technology

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    Design Research in the Netherlands 2005 is the third instalment of a symposium that intends to provide a forum for researchers across the academic and designing disciplines. The five-year interval (1995, 2000, and 2005) allows participants to take a step back from daily considerations and to reflect on their basic methodological assumptions, research programmes, and outcomes. Work on design research is organised in this book in three main parts: Design Research, Design Processes, and Design Tools. The part on Design Research contains papers from the Designed Intelligence Group of Industrial Design TU Eindhoven, the Philosophy Department of the Faculty of Technology, Policy and Management TU Delft, Design Theory and Methodology group of Industrial Design TU Delft, Form and Media Studies of Architecture TU Delft, and Technical Ecology of Architecture TU Delft. The part on Design Processes contains papers from Construction Management & Engineering of Engineering Technology University Twente, Construction Management of Architecture TU Eindhoven, Physical Aspects of the Built Environment Architecture TU Eindhoven, Technical Design & Informatics of Architecture TU Delft, and Knowledge Centre Buildings & Systems TU/e-TNO. The part on Design Tools contains contributions from the Institute of Artificial Art Amsterdam and University of Amsterdam, Technical Design & Informatics of Architecture TU Delft, Design, Integration and Operations of Aircraft and Rotorcraft of Aerospace Engineering TU Delft, TNO Delft, Computational Design of Architecture TU Delft, ID StudioLab of Industrial Design TU Delft, and Design Systems of Architecture TU Eindhoven. Design Research in the Netherlands 2005 in this way provides a sample sheet of the many varied ways in which design is investigated in the Netherlands

    Design research in the Netherlands 2005 : proceedings of the symposium held on 19-20 May 2005, Eindhoven University of Technology

    Get PDF
    Design Research in the Netherlands 2005 is the third instalment of a symposium that intends to provide a forum for researchers across the academic and designing disciplines. The five-year interval (1995, 2000, and 2005) allows participants to take a step back from daily considerations and to reflect on their basic methodological assumptions, research programmes, and outcomes. Work on design research is organised in this book in three main parts: Design Research, Design Processes, and Design Tools. The part on Design Research contains papers from the Designed Intelligence Group of Industrial Design TU Eindhoven, the Philosophy Department of the Faculty of Technology, Policy and Management TU Delft, Design Theory and Methodology group of Industrial Design TU Delft, Form and Media Studies of Architecture TU Delft, and Technical Ecology of Architecture TU Delft. The part on Design Processes contains papers from Construction Management & Engineering of Engineering Technology University Twente, Construction Management of Architecture TU Eindhoven, Physical Aspects of the Built Environment Architecture TU Eindhoven, Technical Design & Informatics of Architecture TU Delft, and Knowledge Centre Buildings & Systems TU/e-TNO. The part on Design Tools contains contributions from the Institute of Artificial Art Amsterdam and University of Amsterdam, Technical Design & Informatics of Architecture TU Delft, Design, Integration and Operations of Aircraft and Rotorcraft of Aerospace Engineering TU Delft, TNO Delft, Computational Design of Architecture TU Delft, ID StudioLab of Industrial Design TU Delft, and Design Systems of Architecture TU Eindhoven. Design Research in the Netherlands 2005 in this way provides a sample sheet of the many varied ways in which design is investigated in the Netherlands

    Beyond Provenance

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    "Human intentionality in chemical patterns in Bronze Age metals For the last 180 years, scientists have been attempting to determine the ‘provenance’ (geological source) of the copper used in Bronze Age artefacts. However, despite advances in analytical technologies, the theoretical approach has remained virtually unchanged over this period, with the interpretative methodology only changing to accommodate the increasing capacity of computers. This book represents a concerted effort to think about the composition of Bronze Age metal as the product of human intentionality as well as of geology. It considers the trace element composition of the metal, the alloying elements, and the lead isotopic composition, showing how a combination of these aspects, along with archaeological context and typology, can reveal much more about the life history of such artefacts, expanding considerably upon the rather limited ambition of knowing where the ore was extracted. Beyond Provenance serves as a ‘how-to handbook’ for those wishing to look for evidence of human intentionality in the chemical patterning observed in bronzes.
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