Orion is an interactive and iterative visual query formulation interface that helps users construct query graphs specifying their exact query intent. Large heterogeneous graphs like Freebase and DBpedia are a great source of information, but their complex scheme makes it difficult for users to specify the exact queries. By using Orion, the users can query these large databases by just drawing the query graphs. Orion automatically recommends relevant edges to add to the query graph that can be either accepted or ignored by the users.
