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Open Educational Resources (OER) has been increasingly applied to support students and professionals in their learning process. They consist of learning resources, usually stored in electronic device, associated with an open license that allows reuse, re-adaptation and redistribution with either no or limited restrictions. However, currently the Web search engines do not provide efficient mechanisms to find OER, in particular, because they do not consider the intrinsic characteristics of OER such as different standards of metadata, repositories and heterogeneous platforms, license types, granularity and quality of resources. This project proposes a Web search engine, named SeeOER, designed to recover OER. Main features of SeeOER are: schema-level conflict resolution derived from the heterogeneity of OER, search for Brazilian OER repositories, query considering data provenance and the development of an effective crawler to obtain specific metadata. In addition, our project contributes to the inclusion of the search OER research issues in the Brazilian scenario, to the mapping of metadata standards to Web search engine. In addition, SeeOER provides a service which internally has an inverted index search to find the OER which is different from traditional Web repositories. We also provide an API for queries which make it possible to write queries based on keywords and boolean. The validation of the search engine on the Web was both qualitative and quantitative. In the quantitative validation it was observed in level of specialty of the search engines components. In conclusion, the quality and quantitative results experiments showed that SeeOER is superior in OER indexed 23,618 compared to 15,955 the Jorum. In relation to the quality SeeOER shown to be superior to Jorum 27 points considering the metric used in project.

Uma arquitetura para mecanismos de buscas na web usando integração de esquemas e padrões de metadados heterogêneos de recursos educacionais abertos em repositórios dispersos