Abstract:

Big data technology arouses widespread concern among academic circle and industries in recent years. In order to deeply understand the research achievements of big data, using patents and papers as the data source, we compared visualization of patents in Derwent Innovations Index (DII) and papers in Web of Science (WOS) database from five aspects using patent map and knowledge mapping method. From the view of patents and papers of big data, it has two distinct stages, and now develops rapidly. America leads first in papers of big data, while China does in patents of big data. IBM’s research topics include system, access, storage, analysis, management, and application of big data technology from the perspective of patents and papers. Cocitation of document is in advantage of highly cited patent in revealing the core technology of big data. ThemeScape patent map shows the technology development in big data deeply from the micro perspective, while keywords knowledge mapping shows the research development in big data systematically from the macro perspective. The result shows that: big data era is coming soon, US is a leading research country, Internet enterprise is far ahead, and the core technology of big data is MapReduce, Hadoop, cloud computing, etc.

Key words: Big data, Patent map, Knowledge mapping, Information visualization, Patent analysis, Data mining, Cloud computing, Co-citation