2009 Volume 6 Pages 187-198
The new procedure to extract technologically relevant words against societal issues was developed using newspaper articles. The originally introduced indices: 'problem relevancy (pr)' and 'technical relevancy (tr)' enabled to score their importance of the words appeared in the articles and to assign keywords to each article. The F-measure defined by precision and recall of the word extraction was evaluated and showed the higher values than those of the baseline indices (tfidf). As its application, the keywords extraction of technological solutions against medical issues, i.e. the counter measures for cancer and lifestyle-related illness was executed using the articles from Nikkei newspaper. The obtained keywords enabled to construct the co-word maps using Jaccard index, equivalence index and proximity index. The results showed the usefulness of the procedure for co-word analysis.
