['The EPS user interface management system',
    'The generation of random binary unordered trees',
    'The intersection graph of paths in trees', 'Graph minors A survey']
['A survey of user opinion of computer system response time',
    'Relation of user perceived response time to error measurement']
['Human machine interface for lab abc computer applications',
    'System and human system engineering testing of EPS',
    'Graph minors IV Widths of trees and well quasi ordering']
Распределение тем: как мы видим, какой документ относится к какой теме после выполнения LDA в python