Since the launch of Open Images in 2009 there has been an increase in the reuse and reach of Open Images each year. To demonstrate this we will compare the quantitative results of 2011 and 2012 from Open Images in this blog. To measure is to know!
Visitors of Open Images
In 2011 there were almost 1,600 media files available on Open Images, this has now increased to more than 1,800. We can also see that the number of visitors has increased from 66,000 in 2011 to more than 105,000 in 2012. Of these visitors more than 53,000 were unique visitors in 2011, which increased to 89,000 in 2012. There was also an increase in the number of visited pages: in 2011 almost 207,000 pages were visited and in 2012 nearly 280,000. In 2011 nearly 11,000 videos were played, in 2012 this was close to 16,000. We also know that from July 2012 almost 2,400 media files were downloaded.
Reuse of the Sound and Vision Open Images dataset
Not only the impact generated on the Open Images platform itself is increasing, but the external reuse of material available through Open Images as well. The Sound and Vision videos from Open Images are, for instance, also available on Wikimedia Commons and in Europeana. Since these videos became available in Europeana in May 2012, they were visited 3,900 times by 3,200 unique visitors throughout 2012. Besides these numbers, we have particularly good insight in the external reuse in Wikimedia projects, such as Wikipedia. In 2011 as well as in 2012 nearly 1,600 media files from the Sound and Vision collection were made available for reuse on Wikimedia Commons through Open Images. In December 2011 these files were reused in almost 1,000 articles on Wikipedia, in December 2012 this number had increased to nearly 1,600. In the whole of 2011 these articles generated almost 19,000,000 page views. In 2012 this more than doubled to nearly 40,000,000 (!). In other words, this means that in 2012 a Wikipedia article containing reused media from Sound and Vision was viewed nearly 40,000,000 times.
Besides Wikimedia projects, the data and videos from Open Images are also used more and more for innovative applications. The API from Open Images makes it possible for computers to process the data from the openly available collections. In 2012, the API received 169,000 requests. Creative developers have become even more aware of the existence of Open Images as a great basis for new apps since the Open Culture Data initiative started in 2011. For the open data competitions Apps Voor Nederland (Apps for the Netherlands) and the Open Culture Data competition 2012, seven apps were submitted that used the Sound and Vision dataset on Open Images. Two of these apps won an award: Vistory (winner of Apps voor Nederland 2011) and Tijdbalk.nl (winner of the Dutch National Archives award during the Open Culture Data competition 2012). In recent years, a number of other applications have also been developed using the Sound and Vision subset of Open Images, such as Erfgoed in Beeld, Led it Up and Docs on the spot.
Putting the figures in perspective
The current size of the entire audiovisual collection of Sound and Vision is estimated at 750,000 hours. The Polygoon newsreel collection is one of the few subcollections of which Sound and Vision owns the required intellectual property rights to make the material available under an open content license. This subcollection forms the basis of the content that Sound and Vision selects for inclusion on Open Images and is estimated at 500 hours. Currently 110 hours of this collection are available via Open Images. This means that – based on the abovementioned estimated figures – at this point in time 22% of the newsreel collection is available as open content via Open Images, which translates to only 0.015% of the entire audiovisual collection of the institute. The impact of Open Images summarized in this blog post shows that even with a relative modest open content set, substantial impact can be obtained. Starting small in the case of Open Images already lead to great results. Imagine what would happen if we were able to even just release one percent of the entire audiovisual collection as open content. Based on our experience we suggest that institutions that haven’t yet opened (parts) of their collection at least experiment with a small content set, that can easily be made available without restrictions. By measuring the impact and actively promoting reuse, a lot can be learned by GLAMs about the potential of opening the digital doors of our institutions.
Metrics for measuring the impact of cultural datasets
The numbers show that the (re)use of the material on Open Images has increased substantially. The impact of Open Images has proved to be considerable and the external reuse of the open content also sees an increase. In response to the growing need within the cultural heritage field to receive statistics on the impact of the opening up of cultural data sets, Sound and Vision will perform impact analysis research together with Kennisland for Open Culture Data. In order to do so, the data providers from the Open Culture Network, but also international initiatives, are requested to provide data on the impact and reuse of their data sets by filling out a survey. The results of this impact analysis will be made public in the course of 2013.