pericles workflow for the automated updating of digital ecosystem models with significant...

GRANT AGREEMENT: 601138 | SCHEME FP7 ICT 2011.4.3 Promoting and Enhancing Reuse of Information throughout the Content Lifecycle taking account of Evolving Semantics [Digital Preservation]

“This project has received funding from the European Union’s Seventh Framework Programme for research, technological development and demonstration under grant agreement no601138”.

PERICLES IN PRACTICEWorkflow for the automated updating of Digital Ecosystem Models with Significant Environment InformationAnna Eggers (State and University Library Göttingen)Fabio Corubolo (University ofLiverpool)

1. Overview of the Workflow2. The Digital Ecosystem Model

a. Our Scenario3. The Mediator Script for our workflow4. The PERICLES Extraction Tool5. The EcoBuilder6. The Entity Registry Model Repository7. What to do with the resulting model▶For each workflow step: live demo ▶After each demo: Questions and discussion

Agenda

▶PERICLES Extraction Tool◦ extraction of Significant Environment

Information▶Digital Ecosystem Model

◦ ontology for modelling Digital Ecosystems▶EcoBuilder

◦ tool to create Digital Ecosystem Models▶Entity Registry and Model Repository

◦ repository for the created models▶further models and model processing Tools

Overview PERICLES Tools for the Model Updating Workflow

▶Complex Digital Ecosystems are hard to maintain.▶It is also hard to estimate and analyse the

impact of planned and unplanned change, and to identify and solve problems.

→ Automated updating of models supports maintaining, preservation, and analysis

Problems & solutions

Model Updating Workflow

The Digital Ecosystem Model

General Description▶Scenario: A weather scientist is doing research

on cloud thickness. He uses data from the Eumetsat data services, and cloud computing Service (BIRA).

▶EUMETSAT is the European Organisation for the Exploitation of Meteorological Satellites. Besides the launch and operation of satellites it is also responsible for delivering satellite data to end-users, e.g. scientists.

Space Science: Experiment Workflow

General Description▶SEVIRI Images is data from the Meteosat

Second Generation (MSG) geostationary satellite with Spinning Enhanced Visible and InfraRed Imager (SEVIRI). It senses the Earth's atmosphere in 12 different spectral channels.

▶BIRA: Belgian Institute for Space Aeronomy.Provides the necessary technical infrastructure for carrying out the calculation based experiment.

Space Science: General Workflow

General Description▶Workflow: A Scientist…

◦ accesses the EUMETSAT data service via a web portal interface to select and download the relevant data

◦ makes use of an own calculation script◦ transmits data and calculation script to BIRA

services◦ executes the calculation process◦ downloads the resulting data to his local system◦ view and analyze the results for a scientific

publication. ▶Three complex areas are interacting: Local system of

the scientist, EUMETSAT data services, BIRA computing system.

Space Science: General Workflow

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Our Scenario for the first workflow

Step 1: Template Creation

The Mediator Script is the controller of the workflow.

▶has a scenario specific template▶gets information from PET▶puts the information into the template to

create DEM instances ▶sends the model instances to ERMR

The Mediator Script

→ Create scenario dependent DEM template

DEMO Step 1:Template for our science Scenario

▶The Digital Ecosystem Model▶Our scenario▶Mediator Script▶Creation of scenario dependent templates

Questions?

The PERICLES Extraction Tool

PERICLES Extraction Tool (PET)

• Open source framework for the extraction of environment information

• Sheer curation• Generic, modular, domain agnostic• Collection by observation

o monitor environment changeso extraction in case of change

• Snapshot of the system environment • To observe unstructured workflows

• Extract information that is usually ignored by current metadata extractors

• From outside the digital object• At the right time and place: within the

creator or curator’s environment• Supporting continuous extraction (time

series)• Be easily customisable with extraction

profiles

PET aims

The PERICLES Extraction Tool

• Available and used system resources• File format identification and checksums• Currently running processes• Event information from processes• Graphic configuration information• MS Office and PDF font dependencies• Native commands

PET Extraction Modules

Step 2: PET Configuration

Step 3: SEI Extraction

Step 4: Information Sending

→ Step 2: Configure PET for the scenario→ Step 3: Extraction of Significant Environment

Information→ Step 4: Send extracted information

DEMO Step 2-4:PET in our Workflow

▶ The EcoBuilder▶ Model Instantiation▶ The Entity Registry Model Repository▶ Model sending / storing

Questions?

The EcoBuilder

Tool for the creation of Digital Ecosystem Models▶GUI

◦ Simplifies the creation of the model◦ Usable by scenario experts without the

necessity to write ontology or Java sources▶Java API

◦ Facilitates integration into workflows ◦ Used by our Mediator Script!

▶Uses Java Jena API - can output OWL/XML or Turtle

EcoBuilder

Step 5: Template Instantiation

→ Instantiate the template with the extracted information

DEMO Step 5:Template instantiation

Entity Registry Model Repository

▶Large scale distributed data store and model repository (triple store)

◦ in PERICLES model and data store▶Accessible via Web interface or RESTful API▶Notification system

The Entity Registry Model Repository

Step 6: Model Submission

→ Send the updated model to the repository

DEMO Step 6:Model Submission

▶The EcoBuilder▶Model Instantiation▶The Entity Registry Model Repository▶Model sending / storing

Questions?

Step 7: Model Analysis

Other PERICLES tools connect to the ERMR where the models are stored. They can get the models to▶model validation and difference calculation

(LRMS)▶visualise the impact of change (MICE)▶edit policies (Policy editor)▶assess content and risks (Appraisal Tool)▶high level translation/connection layer for

PERICLES tools (PerSIST API)

DEM Step 7:Get and analyse the models

▶simulate impact of change▶reveal single point of failures▶use in a sheer curation scenario

◦ extraction of significant environment information

◦ automatic updating of models▶analyse provenance

Resulting Model

Questions?

The presented tools are available under open source license on GitHub: https://github.com/pericles-project