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Geographical Multi-Representation: Striving for the Hyphenation

Geographical Multi-Representation: Striving for the Hyphenation. Jean-François Hangouët IGN, Cogit Lab., MurMur. This Talk: What “Multi-Representation” implies. Representation Multi-Representation Geographical Multi-Representation Geographical Multi-Representation in the Computer. 2 / 16.

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Geographical Multi-Representation: Striving for the Hyphenation

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  1. Geographical Multi-Representation:Striving for the Hyphenation Jean-François Hangouët IGN, Cogit Lab., MurMur

  2. This Talk:What “Multi-Representation” implies • Representation • Multi-Representation • Geographical Multi-Representation • Geographical Multi-Representation in the Computer 2 / 16

  3. A Representation:a Surrogate for a Phenomenon • Phenomenon: Fact that presents itself • Surrogate: Construct to show the phenomenon, involving… • Attention (the constructor’s vision) • Medium (“that where imprint forms”) • Inscription (the imprint itself: the picture, the bits etc.) • Reception (the reading by others of the representation) 3 / 16

  4. Media Inscriptions Phenomena Attentions Receptions Representation = (P, A, M, I, R) 4 / 16

  5. M I M I M I P A R P P A R A R “Fractality” of Representation 5 / 16

  6. Multi-Representation • Several Representations… • … co-ordinated… • … for their mutual augmentation • Possible on {(Pi, Ai, Mi, Ii, Ri)} when… • P1 = P2 = P3 = … = Pn 6 / 16

  7. I I M M P P A A R R Augmentative Co-Ordination Not possible Possible 7 / 16

  8. Sufficient Effective Co-Ordination • Comparing A1, A2, … An • Comparing M1, M2, … Mn • Comparing I1, I2, … In • Comparing R1, R2, … Rn … • … for what the differences show of the Phenomenon 8 / 16

  9. Comparing, i.e. • What is similar (redundancy) • What is specific (contribution) • What is incompatible (error or indecidability) • What is deducible only in the combination (holism effect) 9 / 16

  10. I M P A R Augmentative Co-Ordination Achieved 10 / 16

  11. Media Inscriptions Geographic Phenomena Attentions Receptions Geographical Representation:Representation of a Geographic Phenomenon i.e. “geographic” in the etymological sense:“geo-graphic” (that may be graven on the earth) 11 / 16

  12. Geographical Multi-Representation • Same phenomenon • Different attentions (inclinations, scales…) • Different media (place-names, songs…) • Different inscriptions (map by x, map by y) • Different receptions • A map + its documentation: an example of Geographical Multi-Representation 12 / 16

  13. In the Computer • Geographical representations: • Indirect: scanned map, e-bookified manual… • Direct: true raster, vector • Co-ordination for multi-representation: • Looking for the phenomenon • Storing meaningful differences between Attentions, Media, Inscriptions, Receptions 13 / 16

  14. Example: Looking for the Phenomenon, and Comparing Inscriptions and Receptions • Similar parts • Specific parts • Incompatible parts • Enriching parts • Operations with similar results • Specific operations • Incompatible operations • Operations on combination 14 / 16

  15. Phenomenon Rep 1 Rep 2 Attention Medium Similarity Similarity Similarity Similarity Specificity Specificity Specificity Specificity Incompatibility Incompatibility Incompatibility Incompatibility Holism Holism Holism Holism Inscription Reception GeneralImplementationModel 15 / 16

  16. Cogit Approach • Context: • Unification of IGN’s vector databases • MurMur Project • Strategy: • Linking similar inscriptions in the computer • Computer-aided analysis of differences • Observations synthesized • Useful elements implemented 16 / 16

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