The proceedings contain 42 papers. The special focus in this conference is on Machine Learning and Knowledge Discovery in Databases. The topics include: Advocating for Multiple Defense Strategies Against Adversarial Examples; hybrid Connection and Host Clustering for Community Detection in Spatial-Temporal Network Data; collaborative Learning Based Effective Malware Detection System; a Hybrid Recommendation System Based on Bidirectional Encoder Representations; leveraging Multi-target Regression for Predicting the Next Parallel Activities in Event Logs; a Multi-view Ensemble of Deep Models for the Detection of Deviant Process Instances; exploiting Temporal Convolution for Activity Prediction in Process Analytics; hyper-Parameter Optimization for Privacy-Preserving Record Linkage; group-Specific Training Data; reasoning About Neural Network Activations: An Application in Spatial Animal Behaviour from Camera Trap Classifications; scalable Blocking for Very Large Databases; address Validation in Transportation and Logistics: A Machine Learning Based Entity Matching Approach; linking Heterogeneous Data for Food Security Prediction; towards Better Evaluation of Multi-target Regression Models; assessing the Difficulty of Labelling an Instance in Crowdworking; experimental Evaluation of Scale, and Patterns of Systematic Inconsistencies in Google Trends Data; assessing the Uncertainty of the Text Generating Process Using Topic Models; a Ranking Stability Measure for Quantifying the Robustness of Anomaly Detection Methods; interpretable Machine Learning – A Brief History, State-of-the-Art and Challenges; Efficient Estimation of General Additive Neural Networks: A Case Study for CTG Data; practical Lessons from Generating Synthetic Healthcare Data with Bayesian Networks; what Would You Ask the Machine Learning Model? Identification of User Needs for Model Explanations Based on Human-Model Conversations; interpretable Privacy with Optimizable Utility.