In addition, Shvaiko and Euzenat [90] mention the lack of
evaluation of scalability as a challenge. Likewise, all these
remarks could be made ours, after we have presented main
aspects of Big Data semantic management. Surely, all the
techniques and tools aforementioned can be improved by
various parameters or heuristics, but in Big Data era, a
significant place must be made to optimization. Tools must
handle exabytes of data, streaming data, fast changing ones,
very informal data, etc.