Big Data Analytics and Knowledge Discovery
23rd International Conference, DaWaK 2021, Virtual Event, September 27–30, 2021, Proceedings
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Chapter and Conference Paper
AutoClues: Exploring Clustering Pipelines via AutoML and Diversification
AutoML has witnessed effective applications in the field of supervised learning – mainly in classification tasks – where the goal is to find the best machine-learning pipeline when a ground truth is available....
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Article
Open AccessCost-based Optimization of Multistore Query Plans
Multistores are data management systems that enable query processing across different and heterogeneous databases; besides the distribution of data, complexity factors like schema heterogeneity and data replic...
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Chapter and Conference Paper
Streaming Approach to Schema Profiling
Schema profiling consists in producing key insights about the schema of data in a high-variety context. In this paper, we present a streaming approach to schema profiling, where heterogeneous data is continuou...
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Chapter and Conference Paper
Insight-Based Vocalization of OLAP Sessions
Carrying out OLAP analyses in hands-free scenarios requires lean forms of communication between the users and the system, based for instance on natural language. In this paper we introduce VOOL, a framework sp...
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Article
Open AccessA dataspace-based framework for OLAP analyses in a high-variety multistore
The success of NoSQL DBMSs has pushed the adoption of polyglot storage systems that take advantage of the best characteristics of different technologies and data models. While operational applications take gre...
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Chapter and Conference Paper
Optimizing Execution Plans in a Multistore
Multistores are data management systems that enable query processing across different database management systems (DBMSs); besides the distribution of data, complexity factors like schema heterogeneity and dat...
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Book and Conference Proceedings
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Article
Social BI to understand the debate on vaccines on the Web and social media: unraveling the anti-, free, and pro-vax communities in Italy
The debate on vaccines in Italy has greatly intensified in recent years. The promulgation of a law that makes a set of ten vaccines obligatory has pushed this formerly niche topic to a mainstream level. The la...
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Chapter and Conference Paper
A Hybrid Architecture for Tactical and Strategic Precision Agriculture
In this paper we present a platform that implements a BI 2.0 architecture to support decision making in the precision agriculture domain. The platform, outcome of the Mo.Re.Farming project, couples traditional...
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Chapter and Conference Paper
Answering GPSJ Queries in a Polystore: A Dataspace-Based Approach
The discipline of data science is steering analysts away from traditional data warehousing and towards a more flexible and lightweight approach to data analysis. The idea is to perform OLAP analyses in a pay-as-y...
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Book and Conference Proceedings
Model and Data Engineering
8th International Conference, MEDI 2018, Marrakesh, Morocco, October 24–26, 2018, Proceedings
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Book and Conference Proceedings
New Trends in Model and Data Engineering
MEDI 2018 International Workshops, DETECT, MEDI4SG, IWCFS, REMEDY, Marrakesh, Morocco, October 24–26, 2018, Proceedings
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Reference Work Entry In depth
OLAM
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Reference Work Entry In depth
Data Warehouse Life Cycle and Design
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Reference Work Entry In depth
Visual Online Analytical Processing (OLAP)
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Chapter and Conference Paper
SABINE: A Multi-purpose Dataset of Semantically-Annotated Social Content
Social Business Intelligence (SBI) is the discipline that combines corporate data with social content to let decision makers analyze the trends perceived from the environment. SBI poses research challenges in ...
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Chapter and Conference Paper
Goal-Based Selection of Visual Representations for Big Data Analytics
The H2020 TOREADOR Project adopts a model-driven architecture to streamline big data analytics and make it widely available to companies as a service. Our work in this context focuses on visualization, in part...
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Living Reference Work Entry In depth
Visual Online Analytical Processing (OLAP)
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Living Reference Work Entry In depth
OLAM
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Chapter and Conference Paper
Starry Vault: Automating Multidimensional Modeling from Data Vaults
The data vault model natively supports data and schema evolution, so it is often adopted to create operational data stores. However, it can hardly be directly used for OLAP querying. In this paper we propose a...
