This document analyzes the composition of Freebase data and finds that 29-41% of accepted triples (links and other facts) account for most of the information value, while the "a" predicate is very common but less informative. Descriptions take up a lot of space but keys are duplicated and inconsistent. Around 30% of facts, file size and compressed size are from links, which provide the most evidentiary value in Freebase.

1. Horizontal Decomposition of
Freebase
based on data sampled in July

2. Summary
• 29-41% of accepted triples (links + other) hold
most of the value
• “a” is numerous but doesn’t provide the
evidence other predicates do
• “descriptions” are bulky
• “names” are not machine readable
• “keys” are duplicated, nonstandard, optional

3. a
5%
description
18%
key
11%
keyNs
13%label
6%
name
6%notability
0%
nfp
0%
text
8%
web
6%
links
20%
other
7%
percentage of gz compressed size

4. a
16%
description
1%
key
9%
keyNs
11%
label
6%
name
6%
notability
2%
nfp
2%
text
0%
web
5%
links
32%
other
10%
percentage of facts

5. a
15%
description
7%
key
8%
keyNs
9%
label
4%
name
4%
notability
2%
nfp
1%
text
3%
web
6%
links
30%
other
11%
percentage of uncompressed size

6. :BaseKB and Infovore
Data processed with Infovore software
https://github.com/paulhoule/infovore/
Get segmented Freebase data at
http://basekb.com/