What are good examples of problems that graphs can solve better than the alternative? [closed]

Answer 1

You could take a look at some of the examples in the Neo4j wiki,

http://wiki.neo4j.org/content/Domain_Modeling_Gallery

and the projects that Neo4j is used in (the known ones)

http://wiki.neo4j.org/content/Neo4j_In_The_Wild .

Otherwise, Recommender Algorithms are a good use for Graphs, see for instance PageRank, and other stuff at

https://github.com/tinkerpop/gremlin/wiki/pagerank