Abstract
Domain knowledge, which experts have accumulated locally, should be shared with other non-specialists more broadly to aid their decision making and problem solving. One of the largest social issues due to inadequate knowledge sharing can be observed, however, in a matter of "public acceptance of nuclear power", where people can hardly participate in its technical discussion beyond impeding expertise. In order to mitigate the difficulty, we developed an information retrieval service based on an ontological technique. This new service was implemented into society and served there to make it easier to search nuclear-related contents on the Internet. This technology can be applied to any other matters to aid people in reaching specialized domain knowledge.