Why do we need Metrics? (and what metrics do we need?)

Marco Montanari (@ingmmo, marco.montanari@gmail.com), OpenGLAM WG

Who am I?

� @ingmmo (twitter)

� marco.montanari (facebook, gmail)

�  ingmmo.com

� OpenGLAM workgroup representative for Italy

� Developer

� Art/Design/Architecture freak

A question for you…

The big question

Do we know the impact the opened

data has on Economy?

The classics

� Usage metrics

� Visualization metrics

� Reuse metrics

� Download metrics

� Cool!!!

� Do these infos represent the real impact or the real value of the datasets?

Rethinking metrics

A new model for Data Metrics

The dimensions on which we can work on this model can be

� Spatial (do neighbours have a dataset?)

� Topic-driven (do we talk about the same stuff?)

� Time-bound (do we have a history about that data?)

A new model for Data Metrics - Space Cool! Very Uncool L

A new model for Data Metrics - Time

Time series (EuroStat, ISTAT, National Statistics agencies) J

Anyone else? L Municipalities have lots of historical data!

A new model for Data Metrics - Topic

� Ontologies! à We have lots of people working on them!!

� We have ENORMOUS amounts of CSVs…

� Can we give semantics to everything? SURE!!

Wait that’s cool for anything BUT GLAM Data

Let’s see Guernica…

�  Spatial information: �  Guernica is about Guernica (Location)

�  Guernica is in Madrid (Location)

�  Guernica was painted in Paris (Location)

�  Time information:

�  Guernica was painted in 1937

�  Guernica was exposed at the MoMA until September 1981

�  Guernica was exposed at the Casón del Buen Retiro until 1992

�  Guernica is exposed at the Museo Reina Sofía

�  Topic Information: �  Guernica is about War, pain,

�  Guernica is about Guernica (Location)

�  Guernica is about The bombing of Guernica (Event in space and time)

�  Guernica is enormously complex: http://en.wikipedia.org/wiki/Guernica_(painting)#The_painting

So now what?

�  We now have the three dimensions. Are they enough? Are they too much?

�  Europeana: has all of them (in part) [depending on the availability of the single institutions]

�  City of Chicago: Has all of them and they are pretty well structured [lots of id columns enabling foreing keys]

�  Most datasets: L

Let’s discuss this!!! Thanks, by the way!