Filtering the resources based on the classes

Things to be done before this can be deployed:

First, create the classes of Research contribution and Research problem :

{
  "label" : "Contribution",
  "id" : "Contribution"
}

{
  "label" : "Problem",
  "id" : "Problem"
}

Then add the classes to the existing data in the database using the following Cypher queries in the backend to ensure that the contributions and the research problems are defined:

MATCH (:Paper)-[p {predicate_id: 'P31'}]->(s) SET s:Contribution

Then:

MATCH (:Contribution)-[p {predicate_id: 'P32'}]->(s) SET s:Problem

Set the environment variables:

REACT_APP_CLASSES_CONTRIBUTION=Contribution
REACT_APP_CLASSES_PROBLEM=Problem