LODFlowWorkflow Management System for Linked

Data Processing

Sandro Rautenberg, Ivan Ermilov, Edgard Marx, Sören Auer, and Axel-Cyrille N. Ngomo

Agenda● Introduction● Linked Data Workflow Management● LODFlow: LD Workflow Management

System● LODFlow: Use Cases● Related Work● Conclusion and Future Work

Intro: A Bird’s Eye View on The Problem

Creation and Maintenance of

LD Datasets

manual workflows

applying scripts

cumbersometime-

consuming

error-prone

requiring skills

Linked DataWorkflow

Management

supported by a systematic way

be component-oriented

enabling the reuse of process

facilitating the resource provenance and reproducibility

ensuring the correctness

supporting the evolution

Intro: Solution Outline

Linked DataWorkflow Documentation

Linked DataWorkflow Repeatability

Linked Data Workflow Management

SystemRequirements

Linked Data Workflow Planning

Linked DataWorkflow Execution

Linked DataWorkflow Reusability

LODFlow

Benefits:● Explicitness● Reusability● Repeatability● Efficiency● Ease to use

LODFlow: LDWPO ontology (abstract)The Linked Data Workflow

Knowledge Model and Knowledge Base

LODFlow: Architecture

Qualis: LODFlow Use Caseindirect scores for periodical papers, according 48 knowledge fields.

http://qualis.capes.gov.br/webqualis/publico/pesquisaPublicaClassificacao.seam?conversationPropagation=begin

use in bibliometric and scientometric studies and for ranking post-graduate programs, research proposals, or individual research scholarships.

Qualis (cont.)

● Problem:○ Data available only as 1 Star Data○ Only the current version is available○ Data is not linked to other datasets

● Solution:○ Extracted the data from the web interface (10 years)○ Converted Qualis to a 5-star dataset○ Interlinked it to the DBpedia knowledge base

Qualis: Workflow

● Create a plan for LD project○ Planning the maintenance of LD datasets○ Managing the lifecycle of resources

● Execute a plan○ Maintaining the provenance and repeatability

information○ Producing the resources

Qualis: Workflow (cont.)

Qualis: Workflow ImplementationCreate a plan for LDProject

Workflow Implementation (cont.)Execute a plan

Qualis: Results

● Were executed over 10 years● LODFlow fulfills the requirements

Related work

● Languages such as Business Process Execution Language are adopted in technologies

● Scientific Workflow Management Systems, such as Apache Taverna and Kepler were developed

Conclusion

● Automatization of processing LD workflows● Preserving provenance information on (re)

producing LD datasets● Showing the benefits of explicitness,

reusability, repeatability and efficiency● Applicable in the context of the LODStack

and LD Lifecycle.

Future work: Integration with LODStack

Developing a tool to integrate LODFlow to the LODStack.

Improving the LDWPO with Method concepts

Future work: New Use Casesresearch group extracted

from a transparency portal

Qualis classification set of papers extracted

from Lattes CV

Thank you for your attention!

srautenberg@unicentro.brsandro.rautenberg@gmail.com

We acknowledge support from CAPES/Brazil Agency as well as BMWi SAKE project.