Use DBpedia data for node descriptions

Add backend/data/dbpedia/ directory containing scripts and README
for obtaining DBpedia data, storing it into a db, converting/adding
description data to data.db, and for resolving tol-node DBpedia-node
association conflicts (via DBpedia relations, manual listing, etc).

Resulted in less (about 3/4 as many) descriptions as with using enwiki,
but with notably less mis-associations (eg: node Thor is described as
a shrimp instead of a god).

1 files changed, 29 insertions, 16 deletions

diff --git a/backend/data/README.md b/backend/data/README.md
index c4c46ba..b568f90 100644
--- a/backend/data/README.md
+++ b/backend/data/README.md
@@ -17,24 +17,37 @@ File Generation Process
     3   Use genImgsForWeb.py to create cropped/resized images in img/, using
         images in imgsReviewed, and also to add an 'images' table to data.db.
 4   Node Description Data
-    1   Obtain data in enwiki/, as specified in it's README.
-    2   Run genEnwikiData.py, which adds a 'descs' table to data.db,
-        using data in enwiki/enwikiData.db, and the 'nodes' table.
+    -   Using DBpedia
+        1   Obtain data in dbpedia/, as specified in it's README.
+        2   Run genDbpData.py, which adds a 'descs' table to data.db, using
+            data in dbpedia/dbpData.db, dbpPickedLabels.txt, and the 'nodes' table.
+    -   Using wikipedia dump (old method)
+        1   Obtain data in enwiki/, as specified in it's README.
+        2   Run genEnwikiData.py, which adds a 'descs' table to data.db,
+            using data in enwiki/enwikiData.db, and the 'nodes' table.
 5   Reduced Tree Structure Data
     1   Run genReducedTreeData.py, which adds a 'reduced_nodes' table to data.db,
         using reducedTol/names.txt, and the 'nodes' and 'names' tables.
 
-data.db tables
+data.db Tables
 ==============
--   nodes <br>
-    name TEXT PRIMARY KEY, children TEXT, parent TEXT, tips INT, p\_support INT
--   names <br>
-    name TEXT, alt\_name TEXT, pref\_alt INT, PRIMARY KEY(name, alt\_name)
--   eol\_ids <br>
-    id INT PRIMARY KEY, name TEXT
--   images <br>
-    eol\_id INT PRIMARY KEY, source\_url TEXT, license TEXT, copyright\_owner TEXT
--   descs <br>
-    name TEXT PRIMARY KEY, desc TEXT, redirected INT
--   reduced\_nodes <br>
-    name TEXT PRIMARY KEY, children TEXT, parent TEXT, tips INT, p_support INT
+-   nodes:          name TEXT PRIMARY KEY, children TEXT, parent TEXT, tips INT, p\_support INT
+-   names:          name TEXT, alt\_name TEXT, pref\_alt INT, PRIMARY KEY(name, alt\_name)
+-   eol\_ids:       id INT PRIMARY KEY, name TEXT
+-   images:         eol\_id INT PRIMARY KEY, source\_url TEXT, license TEXT, copyright\_owner TEXT
+-   descs:          name TEXT PRIMARY KEY, desc TEXT, redirected INT
+-   reduced\_nodes: name TEXT PRIMARY KEY, children TEXT, parent TEXT, tips INT, p\_support INT
+
+Other Files
+===========
+-   dbpPickedLabels.txt <br>
+    Contains DBpedia labels, one per line. Used by genDbpData.py to help
+    resolve conflicts when associating tree-of-life node names with
+    DBpedia node labels. Was generated by manually editing the output
+    of genDbpConflicts.py.
+-   genDbpConflicts.py <br>
+    Reads data from dbpedia/dbpData.db, and the 'nodes' table of data.db,
+    and looks for potential conflicts that would arise when genDbpData.db
+    tries to associate tree-of-life node names wth DBpedia node labels. It
+    writes data about them to conflicts.txt, which can be manually edited
+    to resolve them.