Zeynep Pehlivan

McGill University | McGill · Max Bell School of Public Policy

Social media data has already established itself as an important data source for researchers working in a number of different domains. It has also attracted the attention of archiving institutions, many of which have already extended their crawling processes to capture at least some forms of social media data. However, far too little attention has...

Around the world, billions of people use social media like Twitter and Facebook every day, to find, discuss and share information. Social media, which has transformed people from content readers to publishers, is not only an important data source for researchers in social science but also a “must archive” object for web archivists for future genera...

Nowadays, web archives preserve the history of large portions of the web. As medias are shifting from printed to digital editions, accessing these huge information sources is drawing increasingly more attention from national and international institutions, as well as from the research community. These collections are intrinsically big, leading to i...

Temporal queries combine textual and temporal constraints and are used for searching temporal collections like web archives. Indexing these collections might result in huge index files which can reduce the performance of query processing. Static index pruning can be used to increase efficiency. It remains unclear whether these methods are adapted f...

Since late 90s, there has been a large investment in web archiving. Accessing these huge information sources is get-ting more and more attention. Web archive users profiles differ from casual web users profiles. Archive users need to analyze, evaluate and compare the information which requires complex queries with temporal dimension. These queries...

We point out, in this paper, the issue of improving the coherence of web archives under limited resources (e.g. bandwidth, storage space, etc.). Coherence measures how much a collection of archived pages versions reflects the real state (or the snapshot) of a set of related web pages at different points in time. An ideal approach to preserve the co...

Nowadays, many applications are interested in detecting and discovering changes on the web to help users to understand page updates and more generally, the web dynamics. Web archiving is one of these fields where detecting changes on web pages is important. Archiving institutes are collecting and preserving different web site versions for future ge...