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Encyclopedia of Database Systems
SYNONYMS web data extraction, web information extraction, web mining DEFINITION Web harvesting describes the process of gathering and integrating data from various heterogeneous web sources. Necessary input is an appropriate knowledge representation of the domain of interest (e.g. an ontology), together with example instances of concepts or relationships (seed knowledge). Output is structured data (e.g. in the form of a relational database) that is gathered from the Web. The term harvestingdoi:10.1007/978-0-387-39940-9_1172 fatcat:g57kzd22ozc2jndgawknid65nm