Prevent redundancies in recommendations

[alexdma]

Queries such as the following should not be recommended, or at least should be rated very low:

SELECT DISTINCT ?title ?date ?author ?status WHERE  {
  ?patent a bibo:Patent
    ; a ?title
    ; dc:date ?date ;
    ; dc:contributor ?author
    ; dc:contributor ?status
}

This is an actual recommendation of the following setting in the gold standard.

• source endpoint: http://data.open.ac.uk/query

• target endpoint: http://data.aalto.fi/sparql

• original query:

   SELECT DISTINCT ?title ?date ?author ?status WHERE {
     ?patent a bibo:Patent 
       ; rdfs:label ?title
       ; dc:date ?date
       ; dc:creator ?author
       ; bibo:status ?status
   }