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Help link 27/04/2003; 16.46.15.


giovedì 14 novembre 2002
 

Matrix è pieno di pubblicità, quindi ho tempo di ricercare citazioni dal libro di Tufte. Mi è rimasto in mente il famoso grafico della campagna di Russia di Napoleone "the best statistical graphic ever drawn". Quello sotto è la migliore riproduzione che ho trovato.

This map drawn by Charles Joseph Minard portrays the losses suffered by Napoleons army in the Russian campaign of 1812. Beginning at the left on the Polish-Russian border near the Niemen, the thick band shows the size of the army (422,000 men) as it invaded Russia. The width of the band indicates the size of the army at each position. In September, the army reached Moscow with 100,000 men. The path of Napoleons retreat from Moscow in the bitterly cold winter is depicted by the dark lower band, which is tied to temperature and time scales. The remains of the Grande Armée struggled out of Russia with 10,000 men. Minards graphic tells a rich, coherent story with its multivariate data, far more enlightening than just a single number bouncing along over time. Six variables are plotted: the size of the army, its location on a two-dimensional surface, direction of the armys movement, and temperature on various dates during the retreat from Moscow. It may well be the best statistical graphic ever drawn.


11:05:37 PM      comment []

Jon Udell, sempre lui, racconta del nuovo sistema informativo di Delta airlines: Delta gets it.

There were two large-screen monitors at my gate. One hung above the desk where everybody waiting in line could see it. The elements of the information display, which ought to win an Edward Tufte award, included:

  • The usual basics. Gate 4, Flight 395, 8AM, To: Atlanta, Continuing to: Las Vegas. Boarding: 7:30AM.

  • Weather. One screenful for Atlanta, another for Las Vegas.

  • Seating status. A realtime window onto the secrets formerly known only to the desk agents.

    1st class coach
    seats checked in (claimed) 22 153
    seats reserved (unclaimed) 1 22
    seats unassigned 1 48

    Simple. Obvious. And yet, revolutionary. The line was moving slowly, there was only one agent at the desk, blood pressures were starting to cook. But at a glance, I could see that with 22 reserved seats still unclaimed, and 12 people in front of me in the line, there wasn't going to be a problem.

  • The standby list. If you're on standby, you show up on this list.

    Standby List
    JON/T
    MER/E
    ROB/A
    SIM/G

  • Estimated boarding times. These estimates proved inaccurate, but it was still a helpful touch.

    Estimated boarding time
    First Class 7:30
    Medallion 7:32
    Rows 45-47 7:34
    Rows 40-47 7:36

  • The cleared list. Formatted like the standby list, but with seat assignments.

    Cleared List
    SMI/A 18C
    GIB/J 9D
    MOR/M 44B
    SCA/E 34D

    Instructions explain that if your name appears on the list, you're ready to board. No need to visit the desk, your new boarding pass will be printed at the door.

  • The upgrade list. If you've requested an upgrade, you can watch your position float up or down in this list. At one point, an opportunity to buy a discounted upgrade appeared here.

Describing these elements statically doesn't do justice to the dynamic nature of this system in action. [.. ] In any event, congratulations to Delta for doing the right thing, and for doing it so well.  [Jon's Radio (full-length descriptions)]


10:43:57 PM      comment []

L'Economist cita Dilbert. Siamo alla catarsi.
9:55:19 PM      comment []

Oddio, che responsabilità. Vedo che Paolo si dichiara non esperto, lui che può anche girare per i corridoi e chiedere a Simone o agli altri evectoriani. Figuriamoci.

Quello che scrive Cesare mi sembra sensato, quello che scrive Paolo pure, naturalmente. Comunque la risposta breve è che quando questa cosa è venuta fuori ho letto un po' di cose (in particolare la specifica RDF che mi sono portato in spiaggia, facendo alzare sopraccigli e scossare teste) e non ci ho capito (quasi) una cippa.  Fin da quando ho letto Roberto Vacca diffido delle cose che non si capiscono subito. Se fossero state importanti avrebbero fatto tutti gli sforzi possibili per renderle semplici. D'altronde certe cose sono proprio difficili di suo, come la meccanica quantistica, o credere al Berlusca.  Ciò non toglie che qualcuno ci riesce (a capire l'una e a credere all'altro. Oh, se le proporzioni fossero invertite!).

Per le idee nuove io faccio riferimento a Jon Udell, e fortunatamente il buon Jon qualcosa ha da dire. Anzi, elargisco un link importante, perché è un arbitrato sulla controversia che ha falcidiato il mondo degli Rdf-iani e RSS-ioti, simile ad un'altra che viene direttamente da Jonathan Swift. Paradossale il fatto che lo stesso post di Jon cita Matrix che in questo momento è in TV (e magari qualcuno di voi sta guardando Excalibur).

Questo è un bell'argomento da dibattere, chiamo a raccolta Alberto, che ancora non ha un blog (cosa aspetti?) ma so che ogni tanto mi legge.  E adesso Matrix.

Web semantico. Ora che ho un pò di tempo libero ho intenzione di capire meglio questa cosa misteriosa che si chiama Web Semantico. Chiedo l'ausilio di Paolo Valdemarin e Massimo Morelli, che l'argomento lo masticano e bene: se dico qualche boiata correggetemi. [4 banalitaten di Cesare Lamanna]


9:35:48 PM      comment []


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