Digital Business and Intelligent Systems: 15th International Baltic Conference, Baltic DB&IS 2022, Riga, Latvia, July 4–6, 2022, Proceedings (Communications in Computer and Information Science, 1598)

This book constitutes the refereed proceedings of the 15th International Baltic Conference on Digital Business and Intelligent Systems, Baltic DB&IS 2022, held in Riga, Latvia, in July 2022. The 16 revised full papers and 1 short paper presented were carefully reviewed and selected from 42 submissions. The papers are centered around topics like architectures and quality of information systems, artificial intelligence in information systems, data and knowledge engineering, enterprise and information systems engineering, security of information systems. Preface Organization Contents Computer Science Models, Methods, Algorithms, and Tools for Digital Business Elevator Passenger In-Cabin Behaviour – A Study on Smart-Elevator Platform 1 Introduction 2 Related Works 3 Smart Elevator System 4 Study Setup and Experiments 4.1 Passenger Location Analysis Model 4.2 Ground Truth Study 4.3 Static Stand Positions 4.4 Continuous Position Detection for a Path 5 Behaviour Analysis 5.1 RQ1: Preferred Standing Positions 5.2 RQ2: Preferred Standing Position for Successive Travels 5.3 RQ3: Recurring Movement Flow Patterns 6 Conclusions References Efficient Access Control to Parking Space for Different Customer Segments 1 Introduction 2 Related Work 3 Approach for Data-Driven Control of Parking Lots 3.1 Estimate of Departures 3.2 Capacity of Parking Lots for Public Customers 4 Case Study 4.1 Unused Parking Space 4.2 Implementation 4.3 Results 5 Summary and Outlook References On Web Service Quality Using Multi-criteria Decision-Making and Fuzzy Inference Methods 1 Introduction 2 Related Work 3 Determining QoS Performance Values 3.1 QoS Performance Model 3.2 Fuzzy Control System for QoS Performance Value Prediction 3.3 Forming Decision-Making Space 3.4 WASPAS for Determining QoS Performance 3.5 TOPSIS for Determining QoS Performance 3.6 Determining Correlation 4 Case Study and Results 4.1 QoS Performance Value Prediction Using FCS 4.2 Determining QoS Performance Values by FCS, WASPAS and TOPSIS 5 Discussion 6 Conclusions References Universal Methodology for Objective Determination of Key Performance Indicators of Socioeconomic Processes 1 Introduction. More Data is Better, But is It All Significant? 2 Regression Analysis: A Suitable Mathematical Tool 3 Methodology: Sequential Steps 3.1 Determination of the Target Variable 3.2 Selection of Independent Variables 3.3 Linear Modelling: KPI Computing 3.4 Adding Nonlinearity: Specification of KPIs Weighting 3.5 Stability and Sustainability Testing 4 Results and Conclusions References Knowledge and Knowledge Technologies for Digital Business and Intelligent Systems Automatic Speech Recognition Model Adaptation to Medical Domain Using Untranscribed Audio 1 Introduction 2 Related Work 3 Method 3.1 Semi-supervised Training of ASR with Error Detection 3.2 Speech Recognition 3.3 Language Model Adaptation 3.4 Data 4 Results 4.1 Adaptation to the Epicrises Domain 4.2 Adaptation to Psychiatry Domain 4.3 Adaptation to the Radiology Domain 5 Conclusion and Future Work References On the Automatisation of the Realisation of a Banduke Table 1 Introduction 2 Preliminary Analysis of Banduke Tables 2.1 Writing System 2.2 Table Content and Structure 3 Methodology 3.1 Character Rendering 3.2 Character Stretching and Kerning 3.3 Character String Filling and Margins 4 Experimental Evaluation 4.1 Experimental Conditions and Results 4.2 Discussion of the Results 5 Conclusions A Complete Sample Output References Improved Content Model in Personalized Adaptive E-Learning System 1 Introduction 2 Definitions and Assumptions 2.1 Digitalization 2.2 Digital Transformation 3 Background 3.1 Learner Model 3.2 Adaptation Model 3.3 Content Model 4 Evaluation of the E-Learning System LMPAELS 5 Experiment and Data Analysis 5.1 Survey Description 5.2 Respondents Description 5.3 Results 5.4 Evaluation of the Results 6 Improved Content Model 7 Related Work 8 Conclusions References IT Support for Digital Transformation The Direction of the Future Development of ERP and BPMS: Towards a Single Unified Class? 1 Introduction 2 Methodology 3 Enterprise Resources Planning Systems 4 Business Process Management Suites 5 Goals and CSFs for the Implementation of ERP and BPMS 6 Conclusions References Using Topological Functioning Model to Support Event-Driven Solutions 1 Introduction 2 Topological Functioning Model and Event-Driven Solutions 2.1 Topological Functioning Model 2.2 Event-Driven Solutions 3 Case Study 3.1 Problem Domain Description, Analysis and Creation of Topological Functioning Model 3.2 Transformation from Topological Functioning Model to Event-Driven Solution 4 Related Works 5 Conclusions References Temporal Multi-view Contracts for Efficient Test Models 1 Introduction 2 Climate Control System 3 Preliminaries 3.1 Model-Based Testing 3.2 Uppaal Timed Automata 3.3 Contract-Based Design 4 Temporal Multi-view Contracts 5 Empirical Approach to Model-Based Test Generation 6 Test Model Modularization by Multi-view Design Contracts 6.1 Behavioural View 6.2 Fault-Tolerance View 6.3 Timing View 6.4 Consistency of Multi-view Contracts 7 Comparison of Empirical and Multi-view Contract-Based Testing 8 Related Work 9 Conclusion References Features of Quantified Products and Their Design Implications 1 Introduction 2 Research Method 3 Background and Previous Work 3.1 Quantified Products (QP) 3.2 Variability Modelling and Feature Models 3.3 Data-Driven Services and Ecosystems 4 Case Study A 4.1 Case Study Description 4.2 Feature Identification 5 Case Study B 5.1 Case Study Description 5.2 Feature Identification 5.3 Implications of Features on QP Design 6 Summary and Discussion References Artificial Agents and Smart Systems for Digital Business Retail Self-checkout Image Classification Performance: Similar Class Grouping or Individual Class Classification Approach 1 Introduction 2 Literature Review 3 Methods 3.1 Experiment Design 3.2 Inter-class Similarity 3.3 Choosing Number of Clusters 4 Results 5 Conclusions References From Smart Life to Smart Life Engineering: A Systematic Mapping Study and Research Agenda 1 Introduction 2 Research Method 3 Results of the Systematic Mapping Study 4 Findings 4.1 Smart Life Definition 4.2 Smart Life Topics 4.3 Smart Life Technologies 5 Smart Life and Smart Life Engineering Research Agenda 6 Conclusion and Future Works References Shared SAT Solvers and SAT Memory in Distributed Business Applications 1 Introduction 2 Definitions 3 Integrating SAT Solvers 3.1 Per-Solver Concurrency 3.2 Diversification 3.3 Joining Parallel Solvers 4 Implementing the SAT Memory 5 Usage Example 5.1 The Karatsuba Algorithm 5.2 Initializing Web Memory 5.3 Generating the SAT Formula 6 Related Work 7 Conclusion References Data, Data Science, and Computing for Digital Business and Intelligent Systems Outlier Analysis for Telecom Fraud Detection 1 Introduction 2 Telecom Fraud Detection 3 Outliers Detection Methods 4 Experimental Results 5 Conclusion and Future Direction References ModViz: A Modular and Extensible Architecture for Drill-Down and Visualization of Complex Data 1 Motivation 2 Related Work 3 Modular Dashboard Architecture 3.1 Components of the Modular Architecture 3.2 Interaction and Display (Client Module) 3.3 Visualization Management Module (Dashboard Back End) 3.4 Data Analysis Module (Dashboard Back-End) 4 User-Interaction and Visualization of COVID-19 Data 5 Conclusions References Efficient Computation of All-Window Length Correlations 1 Introduction 2 Related Work 3 Problem Statement 4 Computing All-Window Length Correlations Set 4.1 Incremental Computation 4.2 Memory Layout 4.3 Parallelization 4.4 Dimensionality Reduction 5 Visualization of Correlations in a Heatmap 6 Experimental Evaluation 6.1 Experimental Setup 6.2 Comparison with Baseline Solution 6.3 Scalability in the Input Size 6.4 Parallel Execution 7 Conclusions References Author Index