This book constitutes the proceedings of the 16th International Workshop on Knowledge Management and Acquisition for Intelligent Systems, PKAW 2019, held in Cuvu, Fiji, in August 2019.The 9 full papers and 7 short papers included in this volume were carefully reviewed and selected from 38 initial submissions.

Estimating difficulty score of visual search in images for semi-supervised object detection.- Improving Named Entity Recognition with Commonsense Knowledge Pre-training.- Neurofeedback and AI for Analyzing Child Temperament and Attention Levels.- Finding Diachronic Objects of Drifting Descriptions by Similar Mentions.- A max-min conflict algorithm for the stable marriage problem.- Empirical Evaluation of Deep Learning-based Travel Time Prediction.- Marine Vertebrate Predator Detection and Recognition in Underwater Videos by Region Convolutional Neural Network.- Constructing Dataset Based on Concept Hierarchy for Evaluating Word Vectors Learned from Multisense Words.- Adaptive Database’s Performance Tuning based on Reinforcement learning.- Prior-knowledge-embedded LDA with word2vec - for detecting specific topics in documents.- Comparative Analysis of Intelligent Personal Agent Performance.- Toxicity Prediction by Multimodal Deep Learning.- Context-Aware Influence Diffusion in Online Social Networks.- Network Embedding via Self-Adjusting Random Walk.- Study on Influencers of Cryptocurrency Follow-network on GitHub.- A Cross-Domain Theory of Mental Models.

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