This book constitutes the proceedings of the 22nd International Conference on Theory and
Practice of Digital Libraries TPDL 2018 held in Porto Portugal in September 2018. The 51
full papers 17 short papers and 13 poster and tutorial papers presented in this volume were
carefully reviewed and selected from 81 submissions. The general theme of TPDL 2018 was Digital
Libraries for Open Knowledge. The papers present a wide range of the following topics: Metadata
Entity Disambiguation Data Management Scholarly Communication Digital Humanities User
Interaction Resources Information Extraction Information Retrieval Recommendation.
