Heikki Rantala
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View article: ParliamentSampo Knowledge Graph
ParliamentSampo Knowledge Graph Open
The ParliamentSampo Knowledge Graph includes data regarding Finnish Parliamentary debates and actors. The RDF data has been converted using data from the Parliament of Finland's open data services and Wikidata. The Knowledge Graph contains…
View article: Publishing and using parliamentary Linked Data on the Semantic Web: ParliamentSampo system for Parliament of Finland
Publishing and using parliamentary Linked Data on the Semantic Web: ParliamentSampo system for Parliament of Finland Open
This paper presents a new infrastructure and semantic portal called ParliamentSampo for studying parliamentary speeches, culture, language, and activities in Finland. For the first time, the entire time series of some million plenary speec…
View article: Historical Opera and Music Theatre Performances on the Semantic Web: OperaSampo 1830–1960
Historical Opera and Music Theatre Performances on the Semantic Web: OperaSampo 1830–1960 Open
The OPERASAMPO is a Linked Open Data (LOD) service and semantic portal for searching, browsing, and analyzing information related to historical opera and music theatre performances performed in Finland during 1830–1960. The key data origin…
View article: Representing and Searching Associations in Cultural Heritage Knowledge Graphs Using Faceted Search
Representing and Searching Associations in Cultural Heritage Knowledge Graphs Using Faceted Search Open
This paper presents how relations or associations between entities, such as persons and places in cultural heritage knowledge graphs, can be searched and analyzed using faceted search and visualizations. Faceted search using well-formed on…
View article: A Model and Case Study for Searching and Reading Cross-Border Multilingual Legislation on the Semantic Web
A Model and Case Study for Searching and Reading Cross-Border Multilingual Legislation on the Semantic Web Open
This paper addresses the issue of searching legislative documents in an international multilingual setting. Legal documents are published in different countries using local languages, as well as country-specific semantic keyword and classi…
View article: Correction: Pre- and postdiagnosis growth failure, adult short stature, and untreated growth hormone deficiency in radiotherapy-treated long-term survivors of childhood brain tumor
Correction: Pre- and postdiagnosis growth failure, adult short stature, and untreated growth hormone deficiency in radiotherapy-treated long-term survivors of childhood brain tumor Open
[This corrects the article DOI: 10.1371/journal.pone.0274274.].
View article: The Laborious Cleaning: Acquiring and Transforming 19th-Century Epistolary Metadata
The Laborious Cleaning: Acquiring and Transforming 19th-Century Epistolary Metadata Open
The paper documents the process of collecting, consolidating, and publishing epistolary metadata from Finnish cultural heritage organizations to create an archive for bottom-up analyses of 19th-century epistolary culture. We describe and d…
View article: Semantic Solutions for Democratizing Archaeological and Numismatic Data Analysis
Semantic Solutions for Democratizing Archaeological and Numismatic Data Analysis Open
Museums, heritage agencies and other institutions responsible for managing archaeological cultural heritage across Europe are engaged in developing digital platforms to better open their collections to the public as a common resource for t…
View article: Radiotherapy-induced vascular cognitive impairment 20 years after childhood brain tumor
Radiotherapy-induced vascular cognitive impairment 20 years after childhood brain tumor Open
Background Studies have established that radiotherapy for childhood brain tumors (BTs) increases the risk of cerebrovascular disease (CVD); however, it is unclear how this will affect cognitive function. This study aimed to investigate the…
View article: Casting the net far and wide: Aggregating and harmonizing epistolary metadata in collaboration with cultural heritage institutions
Casting the net far and wide: Aggregating and harmonizing epistolary metadata in collaboration with cultural heritage institutions Open
This paper describes the process of gathering, aggregating, harmonizing, and publishing epistolary metadata through collaboration with Finnish cultural heritage (CH) organizations in order to create an inclusive archive for bottom-up analy…
View article: Early disc degeneration in radiotherapy-treated childhood brain tumor survivors
Early disc degeneration in radiotherapy-treated childhood brain tumor survivors Open
Background Childhood brain tumor (BT) survivors have an increased risk of treatment-related late effects, which can reduce health-related quality of life and increase morbidity. This study aimed to investigate lumbar disc degeneration in m…
View article: ParliamentSampo Knowledge Graph
ParliamentSampo Knowledge Graph Open
The ParliamentSampo Knowledge Graph includes data regarding Finnish Parliamentary debates and actors. The RDF data has been converted using data from the Parliament of Finland's open data services and Wikidata. The Knowledge Graph contains…
View article: Early disc degeneration in radiotherapy-treated childhood brain tumor survivors
Early disc degeneration in radiotherapy-treated childhood brain tumor survivors Open
Background: Childhood brain tumor (BT) survivors have an increased risk of treatment-related late effects, which can reduce health-related quality of life and increase morbidity. With an increasing population of childhood BT survivors, the…
View article: WarMemoirSampo
WarMemoirSampo Open
This paper presents WarMemoirSampo, a portal that provides semantic search and navigation of video interviews with Finnish World War II veterans. The portal associates video fragments with contextual data extracted from the video transcrip…
View article: Digital Humanities and Military History
Digital Humanities and Military History Open
This paper shows how various prosopographical phenomena can be highlighted and visualized in the WarSampo Knowledge Graph that contains rich data about Finland in the Second World War as Linked Open Data, including detailed metadata of mor…
View article: Constellations of Correspondence
Constellations of Correspondence Open
This paper presents the vision of aggregating, harmonizing, and publishing letter catalog metadata (information e.g. of senders, receivers and datings of letters) from cultural heritage (CH) institutions in Finland as a single reconciled L…
View article: Digital Humanities Solutions for pan-European Numismatic and Archaeological Heritage Based on Linked Open Data
Digital Humanities Solutions for pan-European Numismatic and Archaeological Heritage Based on Linked Open Data Open
This paper discusses current challenges in archaeological cultural heritage data management and presents the interdisciplinary research project DigiNUMA. The project investigates solutions in data harmonisation and dissemination of pan-Eur…
View article: Analyzing the Lives of Finnish Academic People 1640–1899 in Nordic and Baltic Countries
Analyzing the Lives of Finnish Academic People 1640–1899 in Nordic and Baltic Countries Open
This paper shows how the newly published Linked Open Data (LOD) service and semantic portal “AcademySampo – Finnish Academic People 1640–1899” can be used for Digital Humanities (DH) research. The original primary data, based on some ten m…
View article: Recurrent febrile seizures and serum cytokines: a controlled follow-up study
Recurrent febrile seizures and serum cytokines: a controlled follow-up study Open
Background The role of cytokines in the pathogenesis of febrile seizures (FSs) is unclear, and information regarding cytokine production outside of FS episodes is scarce. Methods In our controlled follow-up study of patients with FSs, we c…
View article: Pre- and postdiagnosis growth failure, adult short stature, and untreated growth hormone deficiency in radiotherapy-treated long-term survivors of childhood brain tumor
Pre- and postdiagnosis growth failure, adult short stature, and untreated growth hormone deficiency in radiotherapy-treated long-term survivors of childhood brain tumor Open
Purpose Growth failure is common in radiotherapy-treated long-term survivors of pediatric brain tumors, but studies on longitudinal growth in this patient group are lacking. Here, the aim was to assess the changes in growth patterns before…
View article: Citizen science archaeological finds on the Semantic Web: the FindSampo framework
Citizen science archaeological finds on the Semantic Web: the FindSampo framework Open
FindSampo fosters collecting, sharing, publishing and studying archaeological finds discovered by the public. The framework includes the following: a mobile find-reporting system; a semantic portal for researchers, the public and collectio…
View article: Using FindSampo Linked Open Data Service and Portal for Spatio-temporal Data Analysis of Archaeological Finds in Digital Humanities
Using FindSampo Linked Open Data Service and Portal for Spatio-temporal Data Analysis of Archaeological Finds in Digital Humanities Open
Funding Information: FindSampo takes the current state of the art of archaeological find databases a step further by providing a framework for utilizing Linked Data. To test and demonstrate the LOD approach, a prototype portal was presente…
View article: Sampo-UI: A full stack JavaScript framework for developing semantic portal user interfaces
Sampo-UI: A full stack JavaScript framework for developing semantic portal user interfaces Open
This paper presents a new software framework, Sampo-UI, for developing user interfaces for semantic portals. The goal is to provide the end-user with multiple application perspectives to Linked Data knowledge graphs, and a two-step usage c…
View article: Knowledge-based relational search in cultural heritage linked data
Knowledge-based relational search in cultural heritage linked data Open
This article presents a new knowledge-based approach for finding interesting semantic relations between resources in a knowledge graph (KG). The idea is to characterize the notion of ‘interesting connection’ in terms of generic ontological…
View article: Efficacy of the implementation of the National Emergency X‐Radiography Utilization Study II decision rule to clinical practice for paediatric head injury patients
Efficacy of the implementation of the National Emergency X‐Radiography Utilization Study II decision rule to clinical practice for paediatric head injury patients Open
Aim To investigate the usefulness of the National Emergency X‐Radiography Utilization Study (NEXUS) II head trauma decision rule in clinical practice for paediatric patients in a tertiary university hospital serving as the only paediatric …