similarities/Makefile

   1 /gscratch/comdata/output/reddit_similarity/subreddit_comment_authors_10000.parquet: cosine_similarities.py /gscratch/comdata/output/reddit_similarity/tfidf/comment_authors.parquet
   2         start_spark_and_run.sh 1 cosine_similarities.py author --outfile=/gscratch/comdata/output/reddit_similarity/subreddit_comment_authors_10000.parquet