The large availability of Open Data sources encoded in different formats makes the processing and interoperability of these sources difficult. One possible solution (among several others) is to translate the data sources into a common and well-known format, such as JSON documents. One common source format, prior to its publication, is data encoded using the…
Read MoreWe recently got a Demo paper accepted at EDBT 2019 describing our HOTMapper tool that enables defining and storing mappings of Open Data sources into an integrated data source in MonetDb. The tool is currently used to store and manage mappings of educational Open Data made available yearly by INEP. The resulting mapped data source…
Read MoreIn information extraction frameworks, finding a matching for a word in a text is a very common issue. The matching is often done based in a given input dictionnary. This task is called Named Entity Recognition (NER). This task is useful to classify the words in the text. For instance, we could have a dictionnary…
Read MoreWe have been working on different initiatives to process large amounts of open data and to produce useful information, for instance, the Educational Data Lab or the Web Portal for Educational Resources. One recurrent difficulty is the initial data analysis and transformations, where it is necessary to understand the data before loading it into some…
Read MoreOur group has been working on different initiatives to produce useful open data to end users. One of them is the collection and monitoring for assessment and evaluation, Another one focuses on the integration and search of OER (Open Educational Data). In this post, I will focus on a third initiative, where we extract existing…
Read MoreInteroperability been data formats/metadata/applications has always been a research subject that I am interested on. Without searching very hard, I’ve found 4 of my publications with interoperability in the title! There are so many solutions covering different aspects, which makes it very hard to choose amongst the best data-format-application-framework-query-language-etc. We defined, with a MsC studeng…
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