1 files changed, 43 insertions, 0 deletions
diff --git a/python/refcat/tasks.py b/python/refcat/tasks.py
index 4ae21fe..0db6f86 100644
--- a/python/refcat/tasks.py
+++ b/python/refcat/tasks.py
@@ -300,6 +300,27 @@ class WikipediaCitationsMinimalDataset(luigi.ExternalTask, Refcat):
     Dataset contains parquet, but we want JSON here:
 
     $ parquet-tools cat --json minimal_dataset.parquet > minimal_dataset.json
+
+    Contains (07/2021) around 29276667 rows.
+
+    Rough id type distribution:
+
+        2160819 ISBN
+        1442176 DOI
+         825970 PMID
+         353425 ISSN
+         279369 PMC
+         185742 OCLC
+         181375 BIBCODE
+         110921 JSTOR
+          47601 ARXIV
+          15202 LCCN
+          12878 MR
+           8270 ASIN
+           6293 OL
+           3790 SSRN
+           3013 ZBL
+
     """
     def output(self):
         return luigi.LocalTarget(path=os.path.join(settings.WIKIPEDIA_CITATIONS, "minimal_dataset.json"))
@@ -1385,3 +1406,25 @@ class UnmatchedResolveJournalNamesMapped(Refcat):
 
     def output(self):
         return luigi.LocalTarget(path=self.path(ext="tsv.zst"), format=Zstd)
+
+# Wikipedia related tasks
+
+class WikipediaDOI(Refcat):
+    """
+    Sorted DOI keys from wikipedia.
+    """
+    def requires(self):
+        return WikipediaCitationsMinimalDataset()
+
+    def run(self):
+        output = shellout("""
+                          skate-wikipedia-doi < {input} |
+                          LC_ALL=C sort -T {tmpdir} -S 20% -k2,2 |
+                          zstd -T0 -c > {output}
+                          """,
+                          tmpdir=self.tmpdir,
+                          input=self.input().path)
+        luigi.LocalTarget(output).move(self.output().path)
+
+    def output(self):
+        return luigi.LocalTarget(path=self.path(ext="tsv.zst"), format=Zstd)