
Advances in Databases and Information Systems
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Content
- Title
- Preface
- Organization
- Table of Contents
- Invited Papers
- Ontological Query Answering via Rewriting
- Introduction
- Preliminaries
- First-Order Rewritability
- Concrete First-Order Rewritable Classes
- Rewriting Approaches
- Conclusion
- References
- On the Convergence of Data and Process Engineering
- Introduction
- Illustrative Scenario
- The Artifact-Centric Process Management Paradigm
- Outlook: Artifact-Centric Interoperation Hubs
- References
- Query Processing 1
- Mixing Bottom-Up and Top-Down XPath Query Evaluation
- Introduction
- Motivation
- Contributions
- Query Language
- Paper Organization
- Our Solution
- Overview of Our Solution
- XPath Automata
- Evaluation of Filter-Less Paths
- Optimization Using a Navigation Cache
- Evaluation of Queries with Filters
- Evaluation Strategies
- Evaluation of Our Prototype Implementation
- Experimental Setup
- Comparison of DecisionModules
- Comparison with Other Evaluators
- Related Works
- Summary and Conclusions
- References
- Querying Versioned Software Repositories
- Introduction
- Related Work
- Running Example, Grammar, Parse Trees, and DB Schema
- Example
- Grammar
- Parse Trees
- Terminal Relations
- Declarative Querying
- Data at Leaves and Data at Inner Nodes
- Annotations
- Annotating the Leaves
- Annotating the Non-leaves
- General Queries of Software Repositories
- Use Case: Find All Versions of the Software That Have Loops of Depth Three or Higher
- Implementation of Qvestor
- Architecture
- DB Schema
- Query Formulation, Translation, and Execution
- Conclusions and Future Work
- References
- Subsuming Multiple Sliding Windows for Shared Stream Computation
- Introduction
- Background and Related Work
- Window-Based Stream Processing
- Sharing Window State and Computation
- Multi-granular Windowing
- A Multi-subsumption Framework for Sliding Windows
- Problem Specification
- Identifying Suitable Embeddings among Sliding Windows
- Embedding Windows at Runtime
- Shared Evaluation over Subsumed Windows
- Experimental Evaluation
- Conclusions and Future Work
- References
- Data Warehousing 1
- Revisiting the Partial Data Cube Materialization
- Introduction
- Preliminaries
- Notations
- Cost Model and Performance Measures
- Related Work
- View Selection Problem
- View Selection as Minimal Weighted Vertex Cover
- Exact Solution
- Approximate Solution
- Reducing the Search Graph
- Introducing Indexes
- Exact Solution
- Dynamic Maintenance
- Stability
- Experiments
- Stability Analysis
- Conclusion and Future Work
- References
- Mining Preferences from OLAP Query Logs for Proactive Personalization
- Introduction and Motivation
- Related Work
- Preliminaries
- Schemata and Instances
- Queries
- The myMDX Preference Language
- A Proactive Approach to OLAP
- Log Mining
- Rule Selection
- Fragment Translation
- Experimental Results and Conclusions
- References
- A Novel Integrated Classifier for Handling Data Warehouse Anomalies
- Introduction
- Background
- RFID
- Non-Monotonic Reasoning
- Bayesian Networks
- Neural Networks
- Proposed Methodology
- Motivation
- Architecture
- Intended Scenario
- Assumptions
- Experimental Evaluation
- Environment
- Results
- Conclusion
- References
- Data Warehousing 2
- Variable Granularity Space Filling Curve for Indexing Multidimensional Data
- Introduction
- The Variable Granularity Space Filling Curve (VG-Curve)
- Partitioning Method
- Insertion Method
- Query Answering: Interval Queries
- Experiment
- Results and Analysis
- Conclusion and Future Work
- References
- MOLAP Cube Based on Parallel Scan Algorithm
- Introduction
- Real-Time OLAP Cube
- OLAP Cubes and Graphical Devices
- Multidemensional OLAP Cube Structure and Algorithms
- Compressed In-Memory OLAP Cube
- Scan-Based Parallel Primitives
- Massively Parallel Creation Algorithm
- Querying Multidimensional OLAP by Linear Searching
- Implementation and Run-Time Experiments
- Cube Creation with Scan Primitives
- Massively Parallel Cube and Database Queries
- Conclusions and Future Works
- References
- Real-Time Computation of Advanced Rules in OLAP Databases
- Introduction
- Background and Related Work
- Parallel Database and OLAP Computation
- Rules in OLAP Cubes
- OLAP Computation on GPUs
- GPU Cube Data Structure
- OLAP Aggregations on GPUs
- GPU Rule Computation
- Finding and Matching Input Facts
- A Massively Parallel Solution
- Utilizing Multiple GPUs
- Data Distribution
- Augmented Algorithm
- Performance Evaluation
- Conclusions and Future Work
- References
- DB Systems
- Designing a Flash-Aware Two-Level Cache
- Introduction
- Related Work
- Page Flow Schemes
- Problem Statement
- The Inclusive Scheme
- The Exclusive Scheme
- The Lazy Scheme
- Comparison
- Implementation Issues
- Experimental Study
- Impact of Cache Size on Hit Ratio
- Impact of FLASH Size on RAM Hit Ratio
- Validation of the Cost Formulas
- Comparison of Page Flow Schemes
- Impact of Flash Cache Block Size
- Caching Only Clean Pages
- Discussion
- Concluding Remarks
- References
- Declarative Serializable Snapshot Isolation
- Introduction
- Background: Snapshot Isolation and Serializability
- Snapshot Isolation
- Detecting Non-serializable Histories
- Serializable Snapshot Isolation Protocol
- Declarative Scheduling Model
- Assumptions and Notational Remarks
- Modeling Data Relation Snapshots and Defining the Oshiya Scheduling Relation Schemata for DSSI
- Modeling Snapshots with Data Relations
- Oshiya Scheduling Relation Schemata
- DSSI Protocol Specification
- DSSI Implementation
- Detecting Potential Pivot Structures
- QSchedule
- Correctness Analysis
- Related Work
- Conclusions and Future Work
- References
- Resource Scheduling Methods for Query Optimization in Data Grid Systems
- Introduction
- Resource Allocation Problem
- Background
- Basic Requirements for Resource Allocation Methods in Data Grid Systems
- Performance Requirements
- Methods Comparison Criterions
- Analysis of Extended Classic and Incentive-Based Methods for Resource Allocation
- Extended Classic Approach
- Methods Based on Static Strategy
- Methods Based on Dynamic and Hybrid Strategies
- Comparison of Classic Resource Allocation Methods
- Incentive-Based Approach
- Economic and Reputation Principles Based Resource Allocation
- Comparison of Incentive-Based Resource Allocation Methods
- Comparison of the Two Approaches
- Performance Evaluation
- Simulation Model and System Parameters
- Performance Analysis
- Conclusion
- References
- Spatial Data
- A Recommendation Technique for Spatial Data
- Introduction
- Related Work
- Background
- A Current-State Approach to Spatial Recommendation
- Recommendation Operator
- Detection of the New Query Object
- Detection of the New Query Predicates
- Relaxed Selection Operator
- Query Processing for the Recommendation Operator
- Concluding Remarks
- References
- Processing (Multiple) Spatio-temporal Range Queries in Multicore Settings
- Introduction
- Preliminaries
- Algorithms in Multicore Context
- MOD-Level Load Distribution
- Query-Aware Load Distribution
- Experimental Evaluation
- Related Work and Concluding Remarks
- References
- Performance Comparison of xBR-trees and R*-trees for Single Dataset Spatial Queries
- Introduction
- Related Work and Motivation
- R*-tree and Single Dataset Query Processing
- R*-tree
- PLQs, WQs, DRQs, K-NNQs and CK-NNQs on R*-trees
- XBR-tree and Single Dataset Query Processing
- Internal Nodes
- Leaf Nodes
- Splitting of Internal Nodes
- PLQs, WQs, DRQs, K-NNQs and CK-NNQs on xBR-trees
- Experimentation
- Conclusions and Future Work
- References
- Query Processing 2
- Efficient Detection of Minimal Failing Subqueries in a Fuzzy Querying Context
- Introduction
- Reminder about Fuzzy Sets and Fuzzy Queries
- Basic Notions about Fuzzy Sets
- About SQLf
- Explaining a Failure
- About Minimal Failing and Unsatisfactory Subqueries
- Cardinality-Based MFS Detection
- Experimentation
- Context
- Exploiting MFSs to Repair Failing Queries
- Related Work
- Conclusion
- References
- Rewriting Fuzzy Queries Using Imprecise Views
- Introduction
- Running Example and Motivations
- Preliminaries
- Basic Notions about Fuzzy Sets
- Logic FL0(OF)
- Rewriting Fuzzy Queries Using Imprecise Views
- Definition of the Data Integration System
- Computing the Rewritings
- Algorithm for Computing -Certain Query Rewritings
- Conclusion
- References
- Personalizing Queries over Large Data Tables
- Introduction
- Basic Definitions
- Preferences over a Single Attribute
- Preferences over Two or More Attributes
- The User Interface
- Related Work and Concluding Remarks
- References
- Information Systems
- An Analysis of the Structure and Dynamics of Large-Scale Q/A Communities
- Introduction
- Background and Related Work
- The Yahoo! Answers Community
- Interactions and Actor Relations
- Q/A Structure and Community Evolution
- Community Topics
- Topic-Sensitive Expertise Mining in Q/A Communities
- Personalized Recommendations
- Conclusion
- References
- Forcasting Evolving Time Series of Energy Demand and Supply
- Introduction
- Distributed Forecasting
- Distributed System Architecture
- Model Synchronization
- Forecast Model Maintenance
- Maintenance Strategy Overview
- Forecast Model Evaluation
- Enhanced Parameter Estimation
- Experimental Evaluation
- Experimental Setting
- Comparison of Efficiency and Accuracy
- Conclusion
- References
- The NestFlow Interpretation of Workflow Control-Flow Patterns
- Introduction
- Related Work
- The NestFlow Modeling Language
- NestFlow Syntax and Annotations
- NestFlow Semantics and Properties
- NestFlow Representation of WCPs
- Evaluation Method
- Evaluation of NestFlow WCPs Support
- Conclusion
- References
- Physical DB Design
- On Simplifying Integrated Physical Database Design
- Introduction
- Background
- Horizontal Data Partitioning
- Bitmap Join Indexes
- A Genetic Algorithm for Selecting BJI
- Attribute Interchangeability Impact on OT Selection
- Motivating Example
- Formalisation
- Clustering-Based Attribute Assignment by K-Means
- Performance Study
- Tests and Results
- Conclusion
- References
- Generic Information System Architecture for Distributed Multimedia Indexation and Management
- Introduction
- Related Work
- The Employed Architectural Solutions
- Information Indexation Management Techniques
- Multimedia Metadata Models
- The LINDO Generic Architecture
- The Remote Servers Components
- The Central Server Components
- A Concrete Illustration of the System Functioning
- The System's Workflows to Acquire Content Indexation Management
- Implementation of a Video Surveillance Use Case
- Adopting the Framework in Other Use Cases
- Broadcast Use Case
- Archive Use Case
- Experimental Tests and Results
- Conclusions and Perspectives
- References
- Automatic Physical Database Tuning Middleware for Web-Based Applications
- Introduction
- Related Work
- Parallel and Hybrid Solutions
- Automated Physical Design Solutions
- Proposed Solution
- State Space Search over Layouts
- Cut-Off Points Detection
- The Middleware
- Experimental Results
- Contributions
- Future Work
- References
- Evolution, Integrity, Security
- XML Data Transformations as Schema Evolves
- Introduction
- Related Work
- Conceptual Model
- Changes between Versions
- Revalidation
- Revalidation Script Overview
- Generation of the XSLT Revalidation Script
- Implementation and Example
- Conclusion and Open Problems
- References
- Partial Repairs That Tolerate Inconsistency
- Introduction
- The Formal Framework
- Databases, Updates, Constraints, Cases
- Violation Metrics
- Inconsistency-Tolerant Integrity Checking
- Repairs
- Integrity-Preserving Repair Management
- Checking Repairs for Integrity Preservation
- Integrity-Preserving Update Methods
- How to Compute Integrity-Preserving Repairs
- Related Work
- Conclusion
- References
- Modularisation in Maude of Parametrized RBAC for Row Level Access Control
- Introduction
- Access Control by Query Modification
- Equational Membership Logic and Maude
- Order Sorted Algebras
- Conditional Equations
- Parametrized RBAC for Row Level Access Control
- Specification in Maude
- Conclusion and Future Work
- References
- Data Semantics
- A Clustering-Based Approach for Large-Scale Ontology Matching
- Introduction
- Related Work
- Preliminaries
- Structure-Based Clustering
- Cluster Merging.
- Intra-Clustering Similarity.
- Complexity Analysis of Clustering Algorithm.
- Determination of Similar Clusters
- Experimental Evaluation
- Data Sets and Evaluation Criteria
- Experimental Results
- Conclusions
- References
- Automatic Building of an Appropriate Global Ontology
- Introduction
- Related Works
- Preliminaries
- DL-LiteA Syntax and Semantics
- Our DL-LiteA Ontologies
- Inference Capabilities
- Building an Appropriate DL-LiteA Global TBox
- Agreement
- Conciliation
- Conclusion and Future Work
- References
- Semantic Interoperation of Information Systems by Evolving Ontologies through Formalized Social Processes
- Introduction
- Related Work
- DOGMA
- Towards Hybrid Ontology Descriptions
- Glossaries
- Procedure of the Methodology
- Social Processes in Ontology Engineering
- Semantic Reconciliation and Its Social Processes
- Application Commitments in the Feedback Loop
- Tool
- Conclusions
- References
- Author Index
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