When a product planner develops new products it is important to analyze competitors' existing products. In this research, we proposed a method of extracting product trend keywords from press releases to support product strategy analysis. In order to extract keywords from press releases, we utilize common phrases, which we call description patterns. A description pattern enables the extraction of keywords that describe those characteristics of a product that cannot be extracted simply by using word frequency. Additionally, we use derivation patterns, which are common phrases derived from a description pattern, to extract keywords more flexibly. By applying the proposed method to the press releases of two companies, we can extract keywords characterizing
['Yutaka Shimizu', 'Masanori Akiyoshi', 'Norihisa Komoda']
A Method of Extracting Product Trend Keywords from Press Releases to Analyze Product Strategy of Competitors