['We', 'propose', 'a', 'modeling', 'approach', 'which', 'considers', 'collaboration', 'processes', 'as', 'the', 'evolution', 'of', 'a', 'network', 'of', 'collaborative', 'documents', 'along', 'with', 'a', 'social', 'network', 'of', 'collaborators', '.']