1. A method for entity disambiguation for execution by one or more data processors, the method comprising: carrying out a within-document co-reference resolution for a plurality of documents, the within-document co-reference resolution comprising: initializing, by at least one of the data processors, a list of entities as an empty list; processing, by at least one of the data processors, names in order of longest to shortest within each entity type class; and comparing, by at least one of the data processors, each name to all entities with which it may be compatible, based on a token hash or database, the comparing being carried out via entity type-specific distance measures; aggregating, by at least one of the data processors, attributes about each entity mentioned in each document; and using, by at least one of the data processors, said entity attributes as features in determining which documents concern a same entity.