Improve MWE recognition

[yhamoudi]

See: #122, #64, #85

Ex:

• date of birth of Barack Obama
• Where is the Panama canal?
• Who is the US president?
• Who is the United States president?
• When is the birth of Obama
• What is the location of the Sea of Tranquility?

Idea 1

• Build a database of MWE (using Wikidata, ConceptNet...)
• Concatenate all words of the question that are part of a same MWE (same algorithm than with quotations)

Idea 2

Improve the NER

Idea 3

Collapse the final normal form using MWE:

collapse ((A, B, ?), C, ?) to (A, B+C, ?) if there exists b in B and c in C such that b c is an existing MWE // only if all b in B or all c in C do not exist in our database.

Ex:

• ((Barack Obama, birth,?),date,?) > (Barack Obama, birth ,date,?)
• How much are tickets to Disney World? > (Disney World, ticket cost, ?)

[Ezibenroc]

See http://discourse.askplatyp.us/t/expressions-recognition/19