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Keywords: O57
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Journal Articles
Asia Pacific Journal of Innovation and Entrepreneurship (2024) 18 (3): 224–250.
Published: 09 January 2024
... expressions for each word), the document vector dj (corresponding to the patent content expression) is computed by the following: Patent text analysis Internet technology China USA O31 O57 Chen Zhu can be contacted at: zhujohn0425@g.ecc.u-tokyo.ac.jp We treat...
