Performance Investigation of WIPO, USPTO and Patent Lens Patent Databases for Prior Art Search
نویسندگان
چکیده
منابع مشابه
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idf 0.0484 0.0534 0.0565 0.055 0.0546 0.0551 0.0549 0.0549 0.0549 0.0549 log(tf)idf 0.0326 0.0531 0.0583 0.0569 0.0556 0.0551 0.0549 0.0549 0.0549 0.0549 tf 0.0011 0.0048 0.013 0.0247 0.0378 0.0439 0.0495 0.0534 0.0559 0.0584 Claims idf 0.0359 0.0478 0.0498 0.0533 0.0569 0.0619 0.0636 0.06 0.0583 0.0593 log(tf)idf 0.0515 0.064 0.0675 0.0668 0.0641 0.0629 0.0607 0.0606 0.0563 0.0566 tf 0.0012 0....
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ژورنال
عنوان ژورنال: International Journal for Research in Applied Science and Engineering Technology
سال: 2018
ISSN: 2321-9653
DOI: 10.22214/ijraset.2018.1354