New in this group, check our summarization results (Not using OpenNMT but strictly NLP) ; https://aisummarizer.com
tests are online in 21 languages ans 151 thematic domains.
Feedbacks are wellcome
OP sent to me this thesis (not available online) which describes the techniques used for this solution:
Just make a demand to University Nancy Lorraine otherwase keep in contact with Elsa she may give you more informations about our software that is in partnership with Systran