Dataset details with source-target splits in main experiment:

• 20 Newsgroups

  Source	Target
  alt.atheism	talk.religion.misc
  comp.windows.x	comp.graphics
  rec.motorcycles	rec.autos
  sci.electronics	sci.crypt
  talk.politics.mideast	talk.politics.misc

• RCV1 Topics

  Source	Target
  C151 - accounts, results	C152 - forecasts, performance reviews
  GCRIM - civil and criminal law	C12 - legal proceedings
  C311 - domestic markets	C312 - external markets
  G156 - EC environmental initiatives	GENV - pollution; conservation; green issues
  M11 - stock exchanges	C171 - share issues

• RCV1 Industries

  Source	Target
  I22450 - ALUMINIUM and ALUMINIUM ALLOYS	I22460 - COPPER and COPPER ALLOYS
  I24800 - CERAMIC PRODUCTS	I24700 - GLASS and GLASS PRODUCTS
  I3640026 - Guided Weapons	I3640047 - Military Aerospace Equipment
  I8200316 - Motor Insurance	I82003 - NON-LIFE INSURANCE
  I0100119 - Pig Farming	I41230 - POULTRY SLAUGHTER and PROCESSING
  I5010022 - Residential Construction	I5010024 - Hospital Construction

• ODP dataset constructed from TechTC repository (_ denotes space or level in hierarchy as intuitive)

  Source	Target
  Arts_Animation_Cartoons_Titles_P	Arts_Comics_Titles_S
  Arts_Music_Styles_By_Decade_1980s	Arts_Music_Bands_and_Artists_U
  Arts_Performing_Arts_Dance_Ballroom	Arts_Performing_Arts_Dance_Middle_Eastern
  Business_Electronics_and_Electrical_Components_Capacitors_and_Resistors	Business_Electronics_and_Electrical_Components_Microwave
  Computers_Consultants_Regional	Computers_Consultants_Systems_Integrators
  Games_Video_Games_Action_Freeware	Games_Video_Games_Shooter
  Health_Conditions_and_Diseases_Digestive_Disorders_Intestinal_Inflammatory_Bowel_Disease	Health_Child_Health_Conditions_and_Diseases
  Recreation_Autos_Enthusiasts_4x4	Recreation_Autos_Makes_and_Models_Volkswagen
  Reference_Education_International_International_Schools	Reference_Education_Colleges_and_Universities_North_America_United_States_North_Carolina_Duke_University
  Society_Religion_and_Spirituality_Christianity_Denominations_Pentecostalism_United_Pentecostal_Church_International_Churches_United_States	Society_Religion_and_Spirituality_Christianity_Denominations_United_Church_of_Christ
  Science_Biology_Cell_Biology	Science_Agriculture_Forestry
  Shopping_Vehicles_Parts_and_Accessories_Makes_and_Models_American_General_Motors	Shopping_Vehicles
  Sports_Flying_Discs_Ultimate_Frisbee_Teams_College_and_University	Sports_Hockey_Ice_Hockey_College_and_University_ACHA
  Sports_Football_Rugby_League	Sports_Soccer_UEFA_Scotland_Clubs