Update medwiki.py

medwiki.py

@@ -99,6 +99,22 @@ class MedWikipediaCorpusGenerator(datasets.GeneratorBasedBuilder):
             )
         ]
 
+    @staticmethod
+    _clean_text(text)-> str:
+        text = text.lower()
+        # remove "\u" followed by 4 characters
+        text = re.sub(r"\\u[0-9a-fA-F]{4}", "", text)
+        # remove scientific citations (e.g. (Smith, J. et al., 2014) )
+        text = re.sub(r"\((?:[\w \.&]+\, )+[0-9]{4}\)", "", text)
+        # remove figure and table references (e.g. (figure 7\xe2\x80\x9377) )
+        text = re.sub(r"\s*\(\s*(?:table|figure)[^()]*\)", "", text)
+        # remove hex characters (e.g. \xe2\x80\x94\xe2\x80\x89)
+        text = re.sub(r"[^\x00-\x7f]+", " ", text)
+        text = re.sub(r"[\n\r\t]+", " ", text)
+        text = re.sub(r"([^a-zA-Z0-9\.])", " ", text)
+
+        return text
+
     def _generate_examples(self, output_dir: str):
         logger.info("generating examples from = %s", output_dir)
         paths = [
@@ -118,4 +134,4 @@ class MedWikipediaCorpusGenerator(datasets.GeneratorBasedBuilder):
                 # the first line is the title
                 title = f.readline()
                 text = f.read()
-                yield i, {"document.text": text, "document.idx": i, "document.title": title}
+                yield i, {"document.text": self._clean_text(text), "document.idx": i, "document.title": self._clean_text(title)}