scholarly journals Patent portfolio analysis by text mining

2008 ◽  
Vol 51 (3) ◽  
pp. 194-206 ◽  
Author(s):  
Takashi NAKAI
2016 ◽  
Vol 10 (4) ◽  
pp. 1108-1130 ◽  
Author(s):  
Yi Zhang ◽  
Lining Shang ◽  
Lu Huang ◽  
Alan L. Porter ◽  
Guangquan Zhang ◽  
...  

2018 ◽  
Vol 26 (11) ◽  
pp. 2256-2278 ◽  
Author(s):  
Dieter Franz Kogler ◽  
Gaston Heimeriks ◽  
Loet Leydesdorff

2009 ◽  
Vol 31 (4) ◽  
pp. 273-277 ◽  
Author(s):  
Gudrun Littmann-Hilmer ◽  
Michael Kuckartz

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