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The rapid development of the Internet, in particular, the dissemination of Web is showing that th...
The rapid development of the Internet, in particular, the dissemination of Web is showing that the phrase “knowledge is power” is real and possible. We live in the exciting time when the world is changing with the growth of the global knowledge, and artificial intelligence, in particular, Semantic Web is taking the important role in the change.
In this talk, I will tell how knowledge in computers is now standing its ground by Linked Data and Social Media data. Formal knowledge representation has been discussed in Artificial Intelligence for a long time and it was applied to the real world problems as expert systems in 1980s. But the knowledge in the expert systems is articulated by knowledge engineers so that it was isolated from the information and data in the world. It results that the knowledge could neither bear the complexity of the real world nor adapt the change of the environment in the real world. Linked Data and Social Media Data are now filling the gap between knowledge and the real world. Linked Data is less formalized and consistent than the formal knowledge but its structure and content are reflected by those in the real world. Formal knowledge can give the structure to Linked Data as well as knowledge can be generated as abstraction of Linked Data. Social Media Data is even less formalized and consistent than Linked Data but it represents the dynamics of human activities in the real world. The implicit structure in Social Media Data can be also the source of knowledge. I will discuss the value and potential of Linked Data and Social Media Data through our experimental projects such as those for LOD in culture and natural science and those for Nico Nico Douga as Social Media.