Iteration over README files. Tried to unify.

README.md

@@ -19,6 +19,9 @@ datasets subdirectories.
 
 ## Statistics
 
+The `statistics` subdirectory contains scripts to summirize the data. The table
+below shows the statistics of our datasets.
+
 Dataset   | Number of trees | Avg. tree size | Min tree size | Max tree size | Number of distinct labels
 ----------|-----------------|----------------|---------------|---------------|-------------------------- 
 Bolzano   | 299             | 166            | 2             | 2105          | 592

bolzano-address-trees/README.md

+# Bolzano
+
+Residential addresses in the city of Bolzano. A tree represents all addresses
+of a street (root: street name, root-leaf path: address).
+
+## Source
+
+https://dbresearch.uni-salzburg.at/projects/pq-gram-ordered-labeled-trees/description.php
+
+## Conversion details
+
+The original trees are in the bracket notation. We only remove the tree
+identifiers.
+
+## Dependencies
+
+- **wget**
+- **unzip**
+- **iconf**
+- **sed**
+- **awk**
+
+## Steps
+
+Execute the following to download and prepare the dataset.
+```bash
+./download_prepare.sh
+```

dblp/README.md

 # DBLP
 
-## Short description
-
 Computer science bibliography. Can be downloaded in a large XML file.
 
+## Source
+
+https://dblp2.uni-trier.de/faq/How+can+I+download+the+whole+dblp+dataset.html
+
 ## Conversion details
 
+We include all entries except “www” elements, which are small
+subtrees that all match for threshold ≥ 3, blowing up the join result by
+billions of pair.
+
 - Each tag is a node with tag's name as a label.
 - Tag nesting is converted to parent-child relationships.
 - A tag's *content* is tag's child node with *content* as label.
@@ -64,5 +70,5 @@ awk '!/{www{key{homepages/' dblp_sorted.bracket > dblp_no_www_sorted.bracket
 
 ## Troubleshooting
 
-- Encoding
+### Encoding
 In case of encoding error follow the steps on this webpage: [https://www.thomas-krenn.com/de/wiki/Perl_warning_Setting_locale_failed_unter_Debian](https://www.thomas-krenn.com/de/wiki/Perl_warning_Setting_locale_failed_unter_Debian).

python_ast/README.md

 # Python Abstract Syntax Trees
 
-## Short description
+Abstract Syntax trees of 150k Python collected and curated by SRI Group of ETH
+Zuerich.
 
-Abstract Syntax trees of 150k Python programs found on Github. Data provided by SRI Group of ETH Zuerich.
+## Source
+
+https://www.sri.inf.ethz.ch/py150
 
 ## Conversion details
 
@@ -13,7 +16,7 @@ Abstract Syntax trees of 150k Python programs found on Github. Data provided by
 
 - **Python3**
   https://www.python.org/downloads/
-- **argparse**
+- **argparse** module of Python3
 - **wget**
 - **wget**
 - **tar**

sentiment/README.md

 # Sentiment
 
-## Short description
+Syntax trees of movie ratings from the Stanford NLP Group.
 
-Syntax trees of movie ratings.
+## Source
+
+https://nlp.stanford.edu/sentiment/
 
 ## Conversion details
 

swissprot/README.md

 # Swissprot
 
-## Short description
-
 Annotated and non-redundant protein sequence database. Can be downloaded in a large XML file.
 
+## Source
+
+https://www.uniprot.org/downloads
+
 ## Conversion details
 
 - Each tag is a node with tag's name as a label.
@@ -25,7 +27,7 @@ Annotated and non-redundant protein sequence database. Can be downloaded in a la
 
 ## Steps
 
-**For repeatability, it downloads a specific version of the data (hardcoded in ``download_prepare.sh`` and ``dblp-to-bracket.py``).**
+**It downloads the current version of the data.**
 
 Execute to download all necessary files.
 ```bash
@@ -37,12 +39,7 @@ Execute to convert the raw data file into bracket notation. **Takes some time.**
 python swissprot_to_bracket.py
 ```
 
-Sample the dataset. **We perform a join on a subset only.**
-```bash
-python random_lines.py 100000 swissprot.bracket > swissprot_random_100k.bracket
-```
-
 Execute to sort the dataset by tree size.
 ```bash
-./sort_dataset.sh swissprot_random_100k.bracket
+./sort_dataset.sh swissprot.bracket
 ```