diff --git a/similarities/tfidf.py b/similarities/tfidf.py
index 7f579fa..79def3c 100644
--- a/similarities/tfidf.py
+++ b/similarities/tfidf.py
@@ -27,11 +27,24 @@ def tfidf(inpath, outpath, topN, term_colname, exclude, included_subreddits):
 def tfidf_weekly(inpath, outpath, topN, term_colname, exclude, included_subreddits):
     return _tfidf_wrapper(build_weekly_tfidf_dataset, inpath, outpath, topN, term_colname, exclude, included_subreddits)
 
-def tfidf_authors(outpath='/gscratch/comdata/output/reddit_similarity/tfidf/comment_authors.parquet',
+def tfidf_post_comment_authors(outpath='/gscratch/comdata/output/reddit_similarity/tfidf/post_authors.parquet',
                   topN=25000,
                   included_subreddits=None):
 
-    return tfidf("/gscratch/comdata/output/reddit_ngrams/comment_authors.parquet",
+    return tfidf("/gscratch/comdata/output/reddit_ngrams/post_comment_authors.parquet",
+                 outpath,
+                 topN,
+                 'author',
+                 ['[deleted]','AutoModerator'],
+                 included_subreddits=included_subreddits
+                 )
+
+def tfidf_authors(inpath="/gscratch/comdata/output/reddit_ngrams/comment_authors.parquet",
+                  outpath='/gscratch/comdata/output/reddit_similarity/tfidf/comment_authors.parquet',
+                  topN=25000,
+                  included_subreddits=None):
+
+    return tfidf(inpath,
                  outpath,
                  topN,
                  'author',
@@ -63,6 +76,18 @@ def tfidf_authors_weekly(outpath='/gscratch/comdata/output/reddit_similarity/tfi
                         included_subreddits=included_subreddits
                         )
 
+def tfidf_post_comment_authors_weekly(outpath='/gscratch/comdata/output/reddit_similarity/tfidf_weekly/post_comment_authors.parquet',
+                         topN=25000,
+                         included_subreddits=None):
+
+    return tfidf_weekly("/gscratch/comdata/output/reddit_ngrams/post_comment_authors.parquet",
+                        outpath,
+                        topN,
+                        'author',
+                        ['[deleted]','AutoModerator'],
+                        included_subreddits=included_subreddits
+                        )
+
 def tfidf_terms_weekly(outpath='/gscratch/comdata/output/reddit_similarity/tfidf_weekly/comment_terms.parquet',
                        topN=25000,
                        included_subreddits=None):