Kovacevic, A., Ivanovic, D., Milosavljevic, B., Konjovic, Z., Surla, D.: Automatic extraction of metadata from scientific publications for CRIS systems.In: ACM/IEEE 2003 Joint Conference on Digital Libraries, pp. Han, H., Giles, C.L., Manavoglu, E., Zha, H., Zhang, Z., Fox, E.A.: Automatic document metadata extraction using support vector machines.In: ACM Symposium on Document Engineering, pp. Constantin, A., Pettifer, S., Voronkov, A.: PDFX: fully-automated pdf-to-xml conversion of scientific literature.Giuffrida, G., Shek, E.C., Yang, J.: Knowledge-based metadata extraction from postscript files.Tkaczyk, D., Szostek, P., Bolikowski, L.: GROTOAP2-the methodology of creating a large ground truth dataset of scientific articles.In: 11th IAPR International Workshop on Document Analysis Systems, pp. Tkaczyk, D., Szostek, P., Dendek, P.J., Fedoryszak, M., Bolikowski, L.: CERMINE-automatic extraction of metadata and references from scientific literature.We also thoroughly compare CERMINE to similar solutions, describe evaluation methodology and finally report its results. In this paper, we outline the overall workflow architecture and provide details about individual steps implementations. CERMINE system is available under an open-source licence and can be accessed at. The evaluation of the extraction workflow carried out with the use of a large dataset showed good performance for most metadata types, with the average F score of 77.5 %. The implementations of most steps are based on supervised and unsupervised machine learning techniques, which simplifies the procedure of adapting the system to new document layouts and styles.

The system is based on a modular workflow, whose loosely coupled architecture allows for individual component evaluation and adjustment, enables effortless improvements and replacements of independent parts of the algorithm and facilitates future architecture expanding. CERMINE is a comprehensive open-source system for extracting structured metadata from scientific articles in a born-digital form.

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