This script extracts the historic word occurrence of a search term in academic papers (from Google Scholar). It allows for spotting trends in research and analyzing the relevance of a topic over time.

python extract_occurrences.py '<keyword>' <start date> <end date>

This command lists the number of publications for every year using this keyword. The script just searches for articles and excludes patents and citations.

• Search term: 'bitcoin'
• Desired time span: 2000 to 2015
• Command: python term_frequency.py 'bitcoin' 2000 2015
• Output: out.csv, with the following contents: