Co-word occurrence network analysis in patents

Co-word occurrence network is a network in which nodes represent words and edges denote their joint appearance in a paper.

Given below is a co-word occurrence network of words in Patent titles from patent records downloaded from U.S. Patent and Trademark Office patents (USPTO) database on http://sdb.cns.iu.edu. 1000 patent records related to word ‘Computer’ were downloaded.

The .csv file is preprocessed- the contents in the field Title are normalized and Word Co-Occurrence Network extracted. The network has 999 word nodes and 8144 co-occurrence edges with no isolated node(s).

To keep only the strongest edges in the network we extract a network with top 1000 edges by weight and visualize it using GUESS. The network is shown below. Only the co-word occurances with more than 40 reference have been labeled as shown below:

coword

The network shows the frequently occurring words in the patent title of the patents data related to term‘computer’.

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