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Categoria: Node

21 abr 2020

BlOD: Blended Integrated Open Data

didonetC3SL, Data transformation, MonetDb, NodeData integration, Open Data, RESTful API
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15 jan 2019

HOTMapper: mapping historical Open Data

didonetC3SL, Data transformation, Interoperability, MonetDb, Node

We recently got a Demo paper accepted at EDBT 2019 describing our HOTMapper tool that enables defining and storing mappings of Open Data sources into an integrated data source in MonetDb. The tool is currently used to store and manage mappings of educational Open Data made available yearly by INEP. The resulting mapped data source…

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28 maio 2018

Open Educational Data: from requirements to end users

didonetC3SL, Data transformation, MonetDb, Node, Sem categoria

Our group has been working on different initiatives to produce useful open data to end users. One of them is the collection and monitoring for assessment and evaluation, Another one focuses on the integration and search of OER (Open Educational Data). In this post, I will focus on a third initiative, where we extract existing…

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30 nov 2017

MonetDB and Rails active record

didonetNodeActiveRecord, MonetDb, opendata, Ruby

We started to use MonetDB, a column store database in a couple of projects involving querying over our DataWarehouses, created from public open data. The goal of one of the projects, called Educational Data Lab, is to return information about educational indicators in Brazil, with its historical evolution. We have nowadays about 100Gb of data…

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Posts

  • Dc4MT: a Data-centric Approach for Model Transformations 03/02/2021
  • Classifying Unstructured Models with Multi Layer Perceptrons 30/04/2020
  • BlOD: Blended Integrated Open Data 21/04/2020
  • Managing Open Data Evolution through bi-dimensional mappings 09/01/2020
  • Exploring logical information to map relational databases into ontologies 18/06/2019
  • How to normalise imprecise temporal expressions 17/05/2019
  • Migrating relational databases to NoSQL 17/05/2019
  • HOTMapper: mapping historical Open Data 15/01/2019
  • Personal research drawings 02/12/2018
  • Open Educational Resources Platform Based on Collective Intelligence 29/10/2018
  • Developing a Gazetteer with Approximate String Matching and Phonetics 10/09/2018
  • Large-scale open data processing using Apache Spark 31/08/2018

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