DescriptionThis two-volume set of LNAI 11775 and LNAI 11776 constitutes the refereed proceedings of the 12th International Conference on Knowledge Science, Engineering and Management, KSEM 2019, held in Athens, Greece, in August 2019. The 77 revised full papers and 23 short papers presented together with 10 poster papers were carefully reviewed and selected from 240 submissions. The papers of the first volume are organized in the following topical sections: Formal Reasoning and Ontologies; Recommendation Algorithms and Systems; Social Knowledge Analysis and Management ; Data Processing and Data Mining; Image and Video Data Analysis; Deep Learning; Knowledge Graph and Knowledge Management; Machine Learning; and Knowledge Engineering Applications. The papers of the second volume are organized in the following topical sections: Probabilistic Models and Applications; Text Mining and Document Analysis; Knowledge Theories and Models; and Network Knowledge Representation and Learning.Table of ContentsFormal Reasoning and OntologiesCentralized Reasoning Translation and Its Computing Complexity for Heterogeneous Semantic Mappings – Xiaofei Zhao, Zhiyong FengInconsistency Handling for Partially Preordered Ontologies: Going Beyond Elect – Sihem Belabbes, Salem BenferhatSemantic Modeling of Textual Relationships in Cross-modal Retrieval – Jing Yu, Chenghao Yang, Zengchang Qin, Zhuoqian Yang, Yue Hu, Zhiguo ShiA Smart Search-Based Ontology Visualization Tool Using SPARQL Patterns – Mariem Neji, Fatma Ghorbel, Bilel GargouriRecommendation Algorithms and SystemsPRTIRG: A Knowledge Graph for People-Readable Threat Intelligence Recommendation – Ming Du, Jun Jiang, Zhengwei Jiang, Zhigang Lu, Xiangyu DuSocial-Aware and Sequential Embedding for Cold-Start Recommendation – Kexin Huang, Yukun Cao, Ye Du, Li Li, Li Liu, Jun LiaoSequential Recommendation Based on Long-Term and Short-Term User Behavior with Self-attention – Xing Wei, Xianglin Zuo, Bo YangMulti-attention Item Recommendation Model Based on Social Relations – Yuan Li, Kedian MuA Network Embedding and Clustering Algorithm for Expert Recommendation Service – Xiaolong Xu, Weijie YuanMixing-RNN: A Recommendation Algorithm Based on Recurrent Neural Network – Enhan Liu, Yan Chu, Lan Luan, Guang Li, Zhengkui WangSCCF Parameter and Similarity Measure Optimization and Evaluation – Wissam Al Jurdi, Chady Abou Jaoude, Miriam El Khoury Badran, Jacques Bou Abdo, Jacques Demerjian, Abdallah MakhoulNRSA: Neural Recommendation with Summary-Aware Attention – Qiyao Peng, Peiyi Wang, Wenjun Wang, Hongtao Liu, Yueheng Sun, Pengfei JiaoPaper Recommendation with Item-Level Collaborative Memory Network – Mei Yu, Yue Hu, Xuewei Li, Mankun Zhao, Tianyi Xu, Hongwei Liu et al.Social Knowledge Analysis and ManagementUAFA: Unsupervised Attribute-Friendship Attention Framework for User Representation – Yuchen Zhou, Yanmin Shang, Yaman Cao, Yanbing Liu, Jianlong TanA Simple and Effective Community Detection Method Combining Network Topology with Node Attributes – Dongxiao He, Yue Song, Di JinLocation-Interest-Aware Community Detection for Mobile Social Networks Based on Auto Encoder – Ming Chen, Wenzhong Li, Sanglu Lu, Daoxu ChenRetweet Prediction Using Context-Aware Coupled Matrix-Tensor Factorization – Bo Jiang, Feng Yi, Jianjun Wu, Zhigang LuA New Multi-objective Evolution Model for Community Detection in Multi-layer Networks – Xuejiao Chen, Xianghua Li, Yue Deng, Siqi Chen, Chao GaoJointly Modeling Community and Topic in Social Network – Yunlei Zhang, Nianwen Ning, Jinna Lv, Chenguang Song, Bin WuA Social Relationships Enhanced Credit Risk Assessment Approach – Caihong Sun, Chengcheng Deng, Wei Xu, Jun SuContext Aware Community Formation for MAS-Oriented Collective Adaptive System – Wei Liu, Jingzhi Guo, Longlong Xu, Deng ChenData Processing and Data MiningProteinA: An Approach for Analyzing and Visualizing Protein Conformational Transitions Using Fuzzy and Hard Clustering Techniques – Silvana Albert, Gabriela CzibulaSoftware Defect Prediction Using a Hybrid Model Based on Semantic Features Learned from the Source Code – Diana-Lucia Miholca, Gabriela CzibulaA Novel Method for Highly Imbalanced Classification with Weighted Support Vector Machine – Biao Qi, Jianguo Jiang, Zhixin Shi, Meimei Li, Wei FanA Study on Applying Relational Association Rule Mining Based Classification for Predicting the Academic Performance of Students – Liana Maria Crivei, Gabriela Czibula, Andrei MihaiStrict Subspace and Label-Space Structure for Domain Adaptation – Ying Li, Pei Zhang, Lin Cheng, Yaxin Peng, Chaomin ShenMulti-view Locality Preserving Embedding with View Consistent Constraint for Dimension Reduction – Yun He, Weiling Cai, Ming Yang, Fengyi SongResearch on Ship Classification Based on Trajectory Association – Tao Zhang, Shuai Zhao, Junliang ChenLearning a Subclass of Deterministic Regular Expression with Counting – Xiaofan Wang, Haiming ChenAggregately Regularized Multi-task Matrix Factorization for Household Energy Breakdown – Hongtao Wang, Miao Zhao, Chunlan Niu, Hongmei WangLearning Continuous User and Item Representations for Neural Collaborative Filtering – Qinglin Jia, Xiao Su, Zhonghai WuPartial Alignment of Data Sets Based on Fast Intrinsic Feature Match – Yaxin Peng, Naiwu Wen, Xiaohuang Zhu, Chaomin ShenImage and Video Data AnalysisImplicit Rating Methods Based on Interest Preferences of Categories for Micro-Video Recommendation – Jie Chen, Junjie Peng, Lizhe Qi, Gan Chen, Wenqiang ZhangAn Enhanced Deep Hashing Method for Large-Scale Image Retrieval – Cong Chen, Weiqin Tong, Xuehai Ding, Xiaoli ZhiSpatio-Temporal Correlation Graph for Association Enhancement in Multi-object Tracking – Zhijie Zhong, Hao Sheng, Yang Zhang, Yubin Wu, Jiahui Chen, Wei KeFinger Gesture Recognition Based on 3D-Accelerometer and 3D-Gyroscope – Wenchao Ma, Junfeng Hu, Jun Liao, Zhencheng Fan, Jianjun Wu, Li LiuDeep LearningDST: A Deep Urban Traffic Flow Prediction Framework Based on Spatial-Temporal Features – Jingyuan Wang, Yukun Cao, Ye Du, Li LiSmall-Scale Data Classification Based on Deep Forest – Meiyang Zhang, Zili ZhangA Text Annotation Tool with Pre-annotation Based on Deep Learning – Fei Teng, Minbo Ma, Zheng Ma, Lufei Huang, Ming Xiao, Xuan LiObject Detection by Combining Deep Dilated Convolutions Network and Light-Weight Network – Yu Quan, Zhixin Li, Canlong ZhangD3N: DGA Detection with Deep-Learning Through NXDomain – Mingkai Tong, Xiaoqing Sun, Jiahai Yang, Hui Zhang, Shuang Zhu, Xinran Liu et al.Deep Neighbor Embedding for Evaluation of Large Portfolios of Variable Annuities – Xiaojuan Cheng, Wei Luo, Guojun Gan, Gang LiState Representation Learning for Minimax Deep Deterministic Policy Gradient – Dapeng Hu, Xuesong Jiang, Xiumei Wei, Jian WangLow-Sampling Imagery Data Recovery by Deep Learning Inference and Iterative Approach – Jiping Lin, Yu Zhou, Junhao KangKnowledge Graph and Knowledge ManagementEnhancing Graph-Based Keywords Extraction with Node Association – Huifang Ma, Shuang Wang, Miao Li, Ning LiTransI: Translating Infinite Dimensional Embeddings Based on Trend Smooth Distance – Xiaobo Guo, Neng Gao, Lei Wang, Xin WangA Knowledge-Based Conceptual Modelling Approach to Bridge Design Thinking and Intelligent Environments – Michael Walch, Takeshi Morita, Dimitris Karagiannis, Takahira YamaguchiNamed Entity Recognition in Traditional Chinese Medicine Clinical Cases Combining BiLSTM-CRF with Knowledge Graph – Zhe Jin, Yin Zhang, Haodan Kuang, Liang Yao, Wenjin Zhang, Yunhe PanAdaptive-Skip-TransE Model: Breaking Relation Ambiguities for Knowledge Graph Embedding – Shoukang Han, Xiaobo Guo, Lei Wang, Zeyi Liu, Nan MuEntity Linking Based on Graph Model and Semantic Representation – Ningyu Ma, Xiao Liu, Yulun GaoThe Model-Driven Enterprise Data Fabric: A Proposal Based on Conceptual Modelling and Knowledge Graphs – Ana-Maria Ghiran, Robert Andrei BuchmannLeveraging User Preferences for Community Search via Attribute Subspace – Haijiao Liu, Huifang Ma, Yang Chang, Zhixin Li, Wenjuan WuKnowledge Graph and Knowledge ManagementVisualization of Customer Satisfaction Linked to Behavior Using a Process-Based Web Questionnaire – Hisashi Masuda, Wilfrid UtzA Multilingual Semantic Similarity-Based Approach for Question-Answering Systems – Wafa Wali, Fatma Ghorbel, Bilel Gragouri, Fayçal Hamdi, Elisabeth MetaisFrom Attribute Relationship Diagrams to Process (BPMN) and Decision (DMN) Models – Krzysztof Kluza, Piotr Wiśniewski, Weronika T. Adrian, Antoni LigęzaBuilding Chinese Legal Hybrid Knowledge Network – Sheng Bi, Yanhui Huang, Xiya Cheng, Meng Wang, Guilin QiMachine LearningEvidential Artificial Immune Recognition System – Abir Lahsoumi, Zied ElouediGated Self-attentive Encoder for Neural Machine Translation – Xiangpeng Wei, Yue Hu, Luxi XingRGCN: Recurrent Graph Convolutional Networks for Target-Dependent Sentiment Analysis – Junjie Chen, Hongxu Hou, Jing Gao, Yatu Ji, Tiangang BaiAn Evidential Semi-supervised Label Aggregation Approach – Lina Abassi, Imen BoukhrisImproved Feature Selection Algorithm for Biological Sequences Classification – Naoual Guannoni, Faouzi Mhamdi, Mourad ElloumiDRAM: A Deep Reinforced Intra-attentive Model for Event Prediction – Shuqi Yu, Linmei Hu, Bin WuPermission-Based Feature Scaling Method for Lightweight Android Malware Detection – Dali Zhu, Tong XiAgile Query Processing in Statistical Databases: A Process-In-Memory Approach – Shanshan Lu, Peiquan Jin, Lin Mu, Shouhong WanEnhancing the Conciseness of Linked Data by Discovering Synonym Predicates – Subhi Issa, Fayçal Hamdi, Samira Si-said CherfiA Comparative Analysis Methodology for Process Mining Software Tools – Panagiotis Drakoulogkonas, Dimitrios ApostolouMultimodal Learning with Triplet Ranking Loss for Visual Semantic Embedding Learning – Zhanbo Yang, Li Li, Jun He, Zixi Wei, Li Liu, Jun LiaoIDML: IDentifier-Based Markup Language for Resource-Constrained Smart Objects in WoT – Wuming LuoUnderstanding Decision Model and Notation: DMN Research Directions and Trends – Krzysztof Kluza, Weronika T. Adrian, Piotr Wiśniewski, Antoni LigęzaData and Knowledge: An Interdisciplinary Approach for Air Quality Forecast – Cheng Feng, Wendong Wang, Ye Tian, Xiangyang Gong, Xirong QueKnowledge Engineering ApplicationsA Multi-label Active Learning Approach for Mobile App User Review Classification – Montassar Ben Messaoud, Ilyes Jenhani, Nermine Ben Jemaa, Mohamed Wiem MkaouerA Causality-Based Approach to Assessing Inconsistency for Multi-context Systems – Kedian MuExtracting Hidden Preferences over Partitions in Hedonic Cooperative Games – Athina Georgara, Dimitrios Troullinos, Georgios ChalkiadakisAgent-Based Approach for Inventory Pre- and Post-disruption Decision Support – Maroua Kessentini, Narjes Bellamine Ben Saoud, Sami SbouiCorrection to: Spatio-Temporal Correlation Graph for Association Enhancement in Multi-object Trackin – Zhijie Zhong, Hao Sheng, Yang Zhang, Yubin Wu, Jiahui Chen, Wei KeEditors BiographyUniversity of Piraeus, Piraeus, Greece Christos Douligeris, Dimitris ApostolouUniversity of Vienna, Vienna, Austria Dimitris Karagiannis