1 / 12

Overview

ofira
Télécharger la présentation

Overview

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. High-level goals and low-level systems: how can computers help solving complex problems?Piek Vossen and Roxane SegersVU University AmsterdamKYOTO (ICT-211423)Yielding Ontologies for Transition-Based OrganizationFP7: Intelligent Content and Semanticshttp://www.kyoto-project.eu/1st Kyoto workshop: Environmental Knowledge Transition and ExchangeFebruary, 2-3, 2009, Artis Amsterdam

  2. Overview 1. analysis of the user questions (provided by ECNC and WWF) a. clear cases b. unclear cases and possible solutions 2. Concepts and relations 3. Discussion: how to use knowledge discovery to answer complex questions 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  3. Analysis of the user questions ▪Total of 330 questions from WWF and ECNC. ▪ Analysis of question type (what, where, who, when, how etc). ▪ Words that express the relation that is asked for 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  4. Classification of questions • Finding Definitions, e.g. • What are the drivers? • What are ecosystem services? • Pin-Pointing Sources • Where are biodiversity hotspots? • Who is an expert on biodiversity? • Information Retrieval, e.g. • What is the current status of a specie? • What are the most recent countings of a certain specie? • Examples (of best practices), e.g. • Best practices of resource management in poor area's? • Are there examples of nature conservation and poverty elivation? • What are good examples of E.S.? • High level questions, e.g. • What are the key biodiversity indicators in a certain area? • What is the effect of climate change and species diversity? • What is the impact of declining bee populations on agricultural productivity? • Which rare and threatened species/ecosystems are people most dependent on for economic benefits? 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  5. Baseline retrieval results 30 high-level questions, 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  6. Some numbers… Example of question analysis: • What is the effectof poverty on biodiversity? causes • How can sustainable financing influence livelihood? causes What is 41.2% How 23.9% What/Which 16.9% Auxiliary verbs 9.3% Where 3.9% Why 1.2% When 0.6% Who 0.6% 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  7. Difficult causal relations (no search results) • What is the impact of dogs on wildlife? Canine x Process (spreading disease, hunting?) Organism x Process (decreasing?) • What is the effect of hedgerows on air quality? Artefact x Process Attribute x Process (Pollution?) 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  8. Association What is the effect of hedgerows on air quality? HEDGEROW AIR QUALITY soil erosion wildlife corridor air pollution aerosols biodiversity biodiversity aerosols 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  9. Decomposition of a high level question hedgerows air quality capture, interception role aerosols airborne particles hyponym hyponym aerosols dust smog 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  10. What does it take? • Extract all events and properties involving hedgerows ► direct relations, causal chains, roles, etc. • Extract all events and properties involving air quality ► direct relations, causal chains, roles, etc • Do the same for any synonyms, hyponyms co-hyponyms, or hyperonyms • Extract dates and locations for events and properties • Try to intersect and quantify the results 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  11. Small preliminary domain model Are there huge negative effects with regard to eco-networks and alien invasive species? eco-network Area core area breeding pond buffer area [area connector] migration corridor commuting corridor dispersal corridor stepping stone corridor Cultural hedgerow canal stonewall Natural watercourses rivers coastlines bird migration corridor terrestrial dispersal corridor 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

  12. Versions of KYOTO • KYOTO-1: • extract all countings of species & populations in regions for dates and periods • KYOTO-2: • changes in numbers of species and sizes of populations, temporal relations and causal relations • KYOTO-3: • to be determined.... 1st Kyoto workshop: Environmental Knowledge Transition and Exchange, February, 2-3, 2009, Artis Amsterdam

More Related