This book constitutes the refereed proceedings of the 13th Asian Conference on Intelligent Information and Database Systems, ACIIDS 2021, held in Phuket, Thailand, in April 2021.*The 67 full papers accepted for publication in these proceedings were carefully reviewed and selected from 291 submissions.

Data Mining Methods and Applications.- Mining Partially-Ordered Episode Rules in an Event Sequence.- Investigating Crossover Operators in Genetic Algorithms for High-Utility Itemset Mining.- Complexes of low dimensional linear classifiers with L1 margins.- Automatic Identification of Bird Species from Audio.- Session based recommendations using Recurrent neural networks – Long short-term memory.- UVDS: A New Dataset for Tra c Forecasting with Spatial-Temporal Correlation.- A Parallelized Frequent Temporal Pattern Mining Algorithm on a Time Series Database.- An efficient approach for mining high-utility itemsets from multiple abstraction levels.- Mining Class Association Rules on dataset with missing data.- Machine Learning Methods.- Clustering Count Data with Stochastic Expectation Propagation.- Entropy-Based Variational Learning of Finite Generalized Inverted Dirichlet Mixture Model.- Mixture-Based Unsupervised Learning for Positive Correlated Count Data.- Phase Prediction of Multi-principal Element Alloys Using Support Vector Machine and Bayesian optimization.- VEGAS: A variable length-based Genetic Algorithm for ensemble selection in deep ensemble learning.- Demand Forecasting for Textile Products using Statistical Analysis and Machine Learning Algorithms.- Parallelization of Reinforcement Learning Algorithms for Video Games.- Decision Support and Control Systems.- A Gap-based Memetic Differential Evolution (GaMeDE) applied to multi-modal optimisation – using multi-objective optimization concepts.- Simulating Emergency Departments Using Generalized Petri Nets.- What do you know about your network: an empirical study of value network awareness in e-commerce.- A robust approach to employee competences in project management.- Key Aspects of Customer Intelligence in the Era of Massive Data.- How Spatial Data Analysis Can Make Smart Lighting Smarter.- Natural Language Processing.- Convolutional Neural Networks for Web Documents Classification.- Sequential model-based optimization for Natural Language Processing Data Pipeline Selection and Optimization.- Automatic Cyberbullying Detection on Twitter Using Bullying Expression Dictionary.- Development of Morphological Segmentation for the Kyrgyz Language on Complete Set of Endings.- Tweets Topic Classification using Transformer-based Language Models.- A New Approach for Measuring the Influence of Users on Twitter.- Building a Domain Specific Knowledge Graph for Business Networking Analysis.- Cybersecurity Intelligent Methods.- N-tier machine learning-based architecture for DDoS attack detection.- Detection of Distributed Denial of Service Attacks using Automatic Feature Selection with Enhancement for Imbalance Dataset.- AntiPhiMBS: A New Anti-Phishing Model to Mitigate Phishing Attacks in Mobile Banking System at Application Level.- Missing/Incomplete Data Handling in Cybersecurity Applications.- An Experimental Study of Machine Learning for Phishing Detection.- Computer Vision Techniques.- Model for Application of Optical Passive SFM Method in Reconstruction of 3D Space and Objects.- Ground plane estimation for obstacle avoidance during fixed-wing UAV landing.- UAV on-board emergency safe landing spot detection system combining classical and deep learning-based segmentation methods.- Wasserstein Generative Adversarial Networks for Realistic Traffic Sign Image Generation.- An Approach to Automatic Detection of Architectural Fa cades in Spherical Images.- Computational Imaging and Vision.- Real-time Multi-view Face Masks Detector on Edge Device For Supporting Service Robots in the COVID-19 Pandemic.- Eye State Recognizer Using Light-weight Architecture for Drowsiness Warning.- NovemE - Color Space Net for Image Classification.- Application of Improved YOLOv3 Algorithm in Mask Recognition.- Simulation and Experiment in Solving Inverse Kinematic for Human Upper Limb by Using Optimization Algorithm.- Word Segmentation for Gujarati Handwritten Documents.- Advanced Data Mining Techniques and Applications.- A SPEA-based Group Trading Strategy Portfolio Optimization Algorithm.- Develop a Hybrid Human Face Recognition System Based on a Dual Deep Neural Network by Interactive Correction Training.- Forecasting Stock Trend Based on the Constructed Anomaly-Patterns based Decision Tree.- A Transparently-Secure and Robust Internetworking Data Retrieval Framework for Financial-Technology Applications.- Comparison of Machine Learning Methods for Life Trajectory Analysis in Demography.- An Efficient Method for Multi-Request Route Search.- Machine Learning Model for the Classification of Musical Composition Genres.- Intelligent and Contextual Systems.- Emotional Piano Melodies Generation using Long Short-Term Memory.- SE-U-Net: Contextual Segmentation by Loosely Coupled Deep Networks for Medical Imaging Industry.- Contextual Soft Dropout Method in Training of Artificial Neural Networks.- Bone Age Assessment by meansof Intelligent Approaches.- Random Number Generators in Training of Contextual Neural Networks.- The Impact of Aggregation Window Width on Properties of Contextual Neural Networks with Constant Field of Attention.- Towards Layer-wise Optimization of Contextual Neural Networks with Constant Field of Aggregation.- Commonsense Knowledge, Reasoning and Programming in Artificial Intelligence.- Community Detection in Complex Networks: A Survey on Local Approaches.- A Q-Learning based Hyper-Heuristic for Generating Efficient UAV Swarming Behaviours.- Cross-Domain Co-Author Recommendation Based on Knowledge Graph Clustering.- Data Modelling and Processing for Industry 4.0.- Trident: Change Point Detection for Multivariate Time Series via Dual-level Attention Learning.- Facial Representation Extraction by Mutual Information Maximization and Correlation Minimization.- Localization system for wheeled vehicles operating in underground mine based on inertial data and spatial intersection points of mining excavations.- Innovations in Intelligent Systems.- Evaluating mutation operator and test case effectiveness by means of mutation testing.- Usability Study of Mobile Applications with Cognitive Load Resulting from Environmental Factors.