学术文献库

The heterogeneity of data poses a great challenge when data from different sources is to be merged for one application. Solutions for this are offered, for example, by ontology-based data management (OBDM). A challenge of OBDM is the automatic creation of semantic models from datasets. This process is typically performed either data- or label-driven and always involves manual human intervention. We identified textual descriptions of data, a form of metadata, quickly to be produced and consumed by humans, as third possible basis for automatic semantic modelling. In this paper, we present, how we plan to use textual descriptions to enhance semantic data management. We will use state of the art NLP technologies to identify concepts within textual descriptions and build semantic models from this in combination with an evolving ontology. We will use automatically identified models in combination with the human data provider to automatically extend the ontology so that it learns new verified concepts over time. Finally, we will use the created ontology and automatically identified semantic models to either rate descriptions for new data sources or even to automatically generate descriptive texts that are easier to understand by the human user than formal models. We present the procedure which we plan for the ongoing research, as well as expected outcomes.