README.md

dmozNeo4j

Death of Dmoz

After announcing the death (officialy) of Dmoz, I created this repositery to share Dmoz Data in CSV format importable directly to Neo4j graph database.

Data

• The data came from the Dmoz website as RDF (not standard).

• So I transformed them into CSV files, as next:

  • Split the structure file (900M) to smaller files (parts 1..9)
  • Transform structure files (parts) from rdf to csv using Dmoz module [dmoz.structure2CSV]
  • Transform content file (1.9G) from rdf to csv using Dmoz module [dmoz.contentPages2CSV]
  • Put CSV file in neo4j-data/import

• These CSV files are importable by Neo4j (see next).

Neo4j Import

• You can import CSV files into neo4j using "Load CSV" [see http://neo4j.com/docs/developer-manual/current/cypher/clauses/load-csv/]
• The used queries can be found in dmozImportQueries
• You can run the imort query using functions in [importDmozCSVinKG]

Install

• There are no real install, all you need is to copy the csv files and run the Node.Js function (which is optional) to import them.

• Don't forget to Create indexes:

  ON :DmozEditor(id) ONLINE (for uniqueness constraint)

  ON :DmozLang(id) ONLINE (for uniqueness constraint)

  `ON :DmozPage(title)        ONLINE `                             
     
  `ON :DmozPage(description)  ONLINE  `  
                                     
  ` ON :DmozPage(url)          ONLINE  ` 
                                
  ` ON :DmozPage(topic)        ONLINE  ` 
                                
  ` ON :DmozPage(stemd)        ONLINE  `
                                 
  ` ON :DmozPage(topTerms)     ONLINE  `                                     
                             
  ` ON :DmozPage(topStems)     ONLINE  `  
                               
  ` ON :DmozPage(id)           ONLINE     (for uniqueness constraint) `
  
  ` ON :DmozTopic(name)        ONLINE       `     
                       
  ` ON :DmozTopic(fullName)    ONLINE   `        
                        
  ` ON :DmozTopic(description) ONLINE  `          
                       
  ` ON :DmozTopic(title)       ONLINE  `     
                            
  ` ON :DmozTopic(stemd)       ONLINE      `      
                       
  ` ON :DmozTopic(topTerms)    ONLINE   `        
                        
  ` ON :DmozTopic(topStems)    POPULATING       `       
                 
  ` ON :DmozTopic(id)          ONLINE     (for uniqueness constraint) `