Lybber and Zolas present in the paper:
http://www.oecd.org/site/stipatents/1-2-Lybbert.pdf
A new algorithmic approach to constructing concordances between the International Patent Classification (IPC) system that organizes patents by technical features and industry classification systems that organize economic data, such as the Standard International Trade Classification (SITC), the International Standard Industrial Classification (ISIC) and the Harmonized System (HS). This ‘Algorithmic Links with Probabilities’ (ALP) approach incorporates text analysis software and keyword extraction programs and applies them to a comprehensive patent dataset.
The ALP concordances described in this paper can be downloaded from the WIPO website at http://www.wipo.int/econ_stat/en/economics/publications.html
http://www.oecd.org/site/stipatents/1-2-Lybbert.pdf
A new algorithmic approach to constructing concordances between the International Patent Classification (IPC) system that organizes patents by technical features and industry classification systems that organize economic data, such as the Standard International Trade Classification (SITC), the International Standard Industrial Classification (ISIC) and the Harmonized System (HS). This ‘Algorithmic Links with Probabilities’ (ALP) approach incorporates text analysis software and keyword extraction programs and applies them to a comprehensive patent dataset.
The ALP concordances described in this paper can be downloaded from the WIPO website at http://www.wipo.int/econ_stat/en/economics/publications.html
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