The workshop committee accepted three workshops for publication in this volume: 5th International Workshop on Knowledge Discovery on the Web (KDWEB 2019), Second International Workshop on Maturity of Web Engineering Practices (MATWEP 2019), International Workshop on Data Science and Knowledge Graph (DSKG 2019).

International Workshop on Data Science and Knowledge Graph (DSKG).- A Design of Building Inventory for Risk Analysis Using Open Data.- Technical Invention Trend Analysis of Applicants Based on CPC Classification.- A Study on Automatic Keyphrase Extraction and its Refinement for Scientific Articles.- A Study on the Characteristics of the Long-term Web Forum Users Using Social Network Analysis.- Knowledge Exploration from Tables on the Web.- 5th International Workshop on Knowledge Discovery on the Web (KDWEB 2019).- Context-dependent Token-wise Variational Autoencoder for Topic Modeling.- Extraction of Relations Between Entities from Human-Generated Content on Social Networks.- Social Networks as Communication Channels: a Logical Approach.- Dataset Anonyization on Cloud: Open Problems and Perspectives.- Second International Workshop on Maturity of Web Engineering Practices (MATWEP 2019).- Scenario Testing of AngularJS-based Single Page Web Applications.- Environment-aware and Human-centric Software Testing Framework for Cyber-Physical Systems.