Web Science and Digital Libraries Research Group

I n the previous post , we provided some details about changes in the archive Library and Archives Canada . After they upgraded their web archive replay system, we were no longer able to find 49 out of 351 mementos  (archived web pages). In part 2 of this four part series, we focus on the movement of a collection from the National Library of Ireland (NLI). In May 2018, we discovered that 979 mementos from the NLI collection that were originally archived at the European Archive ( europarchive.org ) were moved to the Internet Memory Foundation archive ( internetmemory.org ). Then in September 2018, we found that the collection of mementos had been moved to Archive-It ( archive-it.org ). We found that 192 mementos, o ut of 979 , can not be found in  Archive-It (i.e., missing mementos). For example, the memento from  the European Archive : http:// collection.europarchive.org /nli/20141013204117/http://www.defense.gov/ has been moved to  the Internet Memory Foundation (IM

Figure 1: Popularity measure of the candidates labeled on the basis of their Twitter follower growth in absolute number and percentage There are more than 20 candidates running for the 2020 Democratic party Presidential nomination  but everyone knows there will be only one winner. Since only a handful of the candidates have a real shot of receiving the nomination, the question then arises "why are so many candidates running for their party's nomination?" One answer is that running for the nomination increases a candidate's national media coverage and the resulting popularity creates a launchpad for their future endeavors. This is clearly evident in case of candidates like  Pete Buttigieg  and  Andrew Yang , both of whom have enjoyed increased national exposure regardless of the outcome of the primaries. Since "popularity" is hard to define and quantify, we use the  Twitter followers for each candidate as a proxy for their popularity. The ab