dblp: Added command for removing homepage entries.

dblp/README.md

@@ -37,14 +37,19 @@ Execute to convert the raw data file into bracket notation. **Takes around 10 mi
 python dblp_to_bracket.py
 ```
 
-Sample the dataset. **We perform a join on a subset only.**
+**Execute to get a subset only.**
 ```bash
 python random_lines.py 100000 dblp.bracket > dblp_random_100k.bracket
 ```
 
 Execute to sort the dataset by tree size.
 ```bash
-./sort_dataset.sh dblp_random_100k.bracket
+./sort_dataset.sh dblp.bracket
+```
+
+Execute to remove the homepage entries.
+```bash
+sed '/{www{key{/d' dblp_sorted.bracket > dblp_no_www_sorted.bracket
 ```
 
 **(Optional)** Execute to delete all downloaded files. It leaves only the output dataset files.