CLIW 2014—2015 (5/12): Vizualizarea datelor

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    Dezvoltarea aplicaiilor Webla nivel de client

    vizualizarea datelor

    o privire de ansamblu

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    Above all else show the data.

    Edward R. Tufte

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    Realitate

    volumul mare de date disponibile(n special pe Web)

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    www.worldometers.info

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    Necesiti

    integrarea, simplificarea i monetizarea sistemelor informaionale existente i a volumelor masive

    de date pe care acestea le dein

    de citit www.softviscollection.org/intro/a-thousand-words/

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    Necesiti

    integrarea, simplificarea i monetizarea sistemelor informaionale existente i a volumelor masive

    de date pe care acestea le dein

    datainformationknowledgewisdom

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    Ce reprezint vizualizarea datelor?

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    Data vizualization

    o clas de tehnici viznd augmentarea cogniiei

    the use of computer-supported, interactive, visual representations of abstract data

    in order to amplify cognition

    Card, Mackinlay & Shneiderman, 1999

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    Data vizualization

    proces de asociere a informaiei la factori vizuali

    data visualization is expert storytelling Murray, 2013

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    Data vizualization

    proces de asociere a informaiei la factori vizuali

    data visualization is expert storytelling Murray, 2013

    definirea de reguli de interpretare a datelor i exprimarea valorilor lor ca proprieti vizuale

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    informa-tion

    design

    data per-ceptuali-

    zation

    data visuali-zation

    scientific visuali-zation

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    Criterii minimale pe care trebuie s le ndeplineascorice tehnic de vizualizare pragmatic:

    recurgerea la date (non-vizuale)

    producerea unei imagini

    rezultatele oferite s fie lizibile i recognoscibile

    Robert Kosara, 2008http://eagereyes.org/criticism/definition-of-visualization

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    Beneficii adaptare dup Card et al. (2009):

    reducerea cutrii informaiilor de interes

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    Beneficii adaptare dup Card et al. (2009):

    mbuntirea detectrii tiparelor (patterns)

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    Beneficii adaptare dup Card et al. (2009):

    codificarea informaiilor n cadrul unui mediu interactiv

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    Beneficii adaptare dup Card et al. (2009):

    monitorizarea evoluiei datelor/cunotinelor

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    codata visualization

    How Music Travels un experiment de vizualizare animat

    http://www.thomson.co.uk/blog/wp-content/uploads/infographic/interactive-music-map/

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    Beneficii adaptare dup Card et al. (2009):

    realizarea de inferene

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    codata visualization

    vezi Hans Rolins, New insights on poverty, TED 2007

    www.ted.com/talks/hans_rosling_reveals_new_insights_on_poverty

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    Beneficii adaptare dup Card et al. (2009):

    permiterea explorrii spaiului valorilor parametrilor de vizualizare i facilitarea operaiilor

    desfurate de utilizatori

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    Origini

    hri

    specific, ntr-o manier abstract, arii geografice cunoscute + ofer moduri de orientare

    ulterior, pun la dispoziie informaii pentru crearea de strategii n caz de ostiliti

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    Imago Mundi Babilon (secolul V .e.n.)www.ancient-wisdom.co.uk/cartography.htm

    imagini oferite de Wikimedia Commons

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    Origini

    diagrame

    vezi lucrrile lui Euclid n domeniul geometriei

    utilizate n tiin (e.g., de Newton) pentru a nregistraobservaii, a determina relaii, a explica metodologia

    unor experimente, a clasifica i conceptualiza fenomene

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    codata visualization

    ilustrarea fenomenelor optice Isaac Newtonconform Robin (1992)

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    Origini

    diagrame abstracte

    privesc informaii non-fizice

    un exemplu timpuriu: Playfair (1786)

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    Origini

    design vizual + grafice privind datele

    principii de proiectare a vizualizrii datelor (infovis)

    Edward Tufte (1983, 1990, 1997)

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    Origini

    statistica

    analiza exploratorie a datelor (multi-dimensionale)

    Tukey (1977), Cleveland & McGill (1988)

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    Origini

    vizualizarea tiinific

    instrumente software analitice

    pentru analizarea riguroas a seturilor de date masive

    McCormick & DeFanti (1987)

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    Origini

    grafica computaional + inteligena artificial

    proiectarea automat a prezentrilor vizuale ale datelor

    Mackinlay (1986), Roth & Mattis (1990), Casner (1991)

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    Origini

    interaciunea om-calculator

    noi interfee & interaciuni cu utilizatorul

    Robertson, Card & Mackinlay (1989), Shneiderman (1992)

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    Data vizualization vs. infographics

    o tehnic de vizualizare eventual, generat automat poate fi aplicat mai multor seturi de date

    infograficele sunt create manual pentru un set particular de date, conform unui scop specific

    http://eagereyes.org/blog/2010/the-difference-between-infographics-and-visualization

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    codata visualization

    The nature of the visualization depends on which relationship is dominant.

    N. Iliinsky & J. Steele, Designing Data Visualizations, OReilly, 2011

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    codata visualization

    The nature of the visualization depends on which relationship is dominant.

    N. Iliinsky & J. Steele, Designing Data Visualizations, OReilly, 2011

    infographicsdata/info viz

    e.g., generative art

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    Design privind vizualizrile datelor

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    Visualization

    the mapping of data to visual formthat supports human interaction in a workplace

    for visual sense making

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    covisualization modeling

    Stuart Card, Information Visualization, Human-Computer Interaction Handbook (2nd Edition),

    Taylor & Francis, 2008

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    date iniiale, neprelucrate (raw data)

    structuri de date: relaii + meta-date (data tables)

    structuri vizuale: elemente grafice (visual structures)

    vizualizri (interactive) percepute de utilizator (views)

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    covisualization modeling

    Raw Data(seturi de) date de vizualizat,

    disponibile n diverse formate binare/textuale

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    covisualization modeling

    Data Transformationsofer vectori normalizai ntr-un spaiu n dimensional

    eventual, pot implica diverse operaii de filtrare

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    covisualization modeling

    Data Tablestructuri de date convenabil alese:

    relaii (depinznd de variabilele considerate) i meta-date