Earth Observation Open Science and Innovation

geospatial analytics; social observatory; big earth data; open data; citizen science; open innovation; earth system science; crowdsourced geospatial data; citizen science; science in society; data scienc

Interactive exploration of millions of healthcare records in Brazil

A análise de dados de saúde é desafiadora devido ao seu grande volume, complexidade e heterogeneidade. Técnicas de visualização de dados interativos são indispensáveis para auxiliar a análise desses grandes sistemas de saúde. Nesta dissertação, propomos estudos de caso desenvolvidos a partir de dados do SUS, o Sistema Único de Saúde, um dos maiores sistemas públicos de saúde do mundo. Apresentamos protótipos de análise visual em uma estrutura de cubos de dados de última geração que oferece suporte à exploração visual interativa de milhões de registros. Demonstramos como a exploração de dados fornecida por nossos protótipos pode auxiliar as tarefas essenciais na análise de grandes dados de assistência médica, incluindo dados da COVID-19 no Brasil.The analysis of healthcare data is challenging due to its large volume, complexity, and heterogeneity. Interactive data visualization techniques are indispensable to support the analysis of such large healthcare systems. In this dissertation, we propose case studies developed for data from SUS, the Brazilian Unified Healthcare System, one of the largest public healthcare systems in the world. We present visual analytics prototypes on a state of-the-art datacube structure that supports the interactive visual exploration of millions of records. We demonstrate how the data exploration provided by our prototypes can help the essential tasks in analyzing big healthcare data, including data from COVID-19 in Brazil

Dataset search: a survey

Generating value from data requires the ability to find, access and make sense of datasets. There are many efforts underway to encourage data sharing and reuse, from scientific publishers asking authors to submit data alongside manuscripts to data marketplaces, open data portals and data communities. Google recently beta released a search service for datasets, which allows users to discover data stored in various online repositories via keyword queries. These developments foreshadow an emerging research field around dataset search or retrieval that broadly encompasses frameworks, methods and tools that help match a user data need against a collection of datasets. Here, we survey the state of the art of research and commercial systems in dataset retrieval. We identify what makes dataset search a research field in its own right, with unique challenges and methods and highlight open problems. We look at approaches and implementations from related areas dataset search is drawing upon, including information retrieval, databases, entity-centric and tabular search in order to identify possible paths to resolve these open problems as well as immediate next steps that will take the field forward.Comment: 20 pages, 153 reference

Flexible Integration and Efficient Analysis of Multidimensional Datasets from the Web

If numeric data from the Web are brought together, natural scientists can compare climate measurements with estimations, financial analysts can evaluate companies based on balance sheets and daily stock market values, and citizens can explore the GDP per capita from several data sources. However, heterogeneities and size of data remain a problem. This work presents methods to query a uniform view - the Global Cube - of available datasets from the Web and builds on Linked Data query approaches

Flexible Integration and Efficient Analysis of Multidimensional Datasets from the Web

If numeric data from the Web are brought together, natural scientists can compare climate measurements with estimations, financial analysts can evaluate companies based on balance sheets and daily stock market values, and citizens can explore the GDP per capita from several data sources. However, heterogeneities and size of data remain a problem. This work presents methods to query a uniform view - the Global Cube - of available datasets from the Web and builds on Linked Data query approaches

Linked Open Data - Creating Knowledge Out of Interlinked Data: Results of the LOD2 Project

Database Management; Artificial Intelligence (incl. Robotics); Information Systems and Communication Servic