Remove infrequent properties
- Change the INFREQ_TYPE_THRESHOLD for testing
 Create a formula for performance evaluation metric
Need to check with Linnea:
 We frequently use the object value of an rdf:type property to assign the name to a CS. In labelling process, we store the real object oid of this object value as a candidate for the CS's name. However, If the object value for the is a string (not an URI), how we can get the literal name of the CS back from the candidate (oid)? Specifically, How can we know where we should look into, e.g., Tokenizer or Map bat, in order to get the string value from the oid?