Extracting Dates From Medical Data
1 Introduction In this assignment, you'll be working with messy medical data and using regular expressions to extract relevant information from the data. Each line of the dates.txt file corresponds to a medical note. Each note has a date that needs to be extracted, but each date is encoded in one of many formats. The goal of this assignment is to correctly identify all of the different date variants encoded in this dataset and to properly normalize and sort the dates. Here is a list of some of the variants you might encounter in this dataset: 04/20/2009; 04/20/09; 4/20/09; 4/3/09 Mar-20-2009; Mar 20, 2009; March 20, 2009; Mar. 20, 2009; Mar 20 2009; 20 Mar 2009; 20 March 2009; 20 Mar. 2009; 20 March, 2009 Mar 20th, 2009; Mar 21st, 2009; Mar 22nd, 2009 Feb 2009; Sep 2009; Oct 2010 6/2008; 12/2009 2009; 2010 Once you have extracted these date patterns from the text, the next step is to sort them in ascending chronological order accoring to the following rules: Assume all dates in