Fetch data from Wikipedia, Periodic Table or Freebase

[dev-zero]

According to @Delaya and @dev-zero, http://dbpedia.org seems to be quiet incomplete, at least the entries from the Infobox for example for Iron seem to be completely missing.

The best course of action is therefore probably to use the Wikipedia API Library to parse the data directly from the respective Wikipedia pages.

Other options are:

• use a periodic table
• use Freebase

This needs #1 to be implemented.

[dev-zero]

While doing that, we have to define a limited set of properties.

[dolfim]

For a list of predicates look at the wiki page

[dolfim]

Note that it would be nice to already perform binning on the numeric properties.

[iliazintchenko]

we should keep the number of bins as a parameter as it defines the depth of search

[dolfim]

Should we then have real raw data and binned data? Or implement binning only when importing in our format?

[dev-zero]

At the moment I'd try to build a chain since it gives us more control over the process and makes the components simpler:

wikipedia -> raw data -> pre-processed data (binning) -> custom format/datastructure

[iliazintchenko]

lets start with a fixed binning level and add functionality to change the binning later