Archeologists ask three things: What, When and Where.

Therefore Open Boek offers
  1. keyword matching using the Vector Space Model.

  2. Recognition and translation of all chronological phrases:
             Your query: 500-1500
             Middle ages
             1100, 1101, 1102,...1198, 1199
             twelfth century
             XII-e century...
             late medieval
             eleven hundred twelve
  3. Recognition and disambiguation of geographic references and coupling to databases (experiments have started).

              Loevenstein Castle
              ...the castle...
              ...the building...
              In a radius of 20 km round Amsterdam
              Inside the county borders
    And of course linking to Google Maps.