Temporal dynamics and how they impact upon various components of information retrieval (IR) systems have received a lot of attention in the last decade. In particular, the study of relevance in information retrieval can now be framed within the so-called temporal IR approaches, which explain how user behavior, document content, and scale vary with time, and how we can use them in our favor in order to improve retrieval effectiveness. Temporal Information Retrieval provides a comprehensive overview of temporal IR approaches, centered on the following questions: what are temporal dynamics, why...

This book constitutes the proceedings of the 21st European Conference on Advances in Databases and Information Systems, ADBIS 2017, held in Nicosia, Cyprus, in September 2017.
The 26 regular papers presented together with one keynote paper and one keynote abstract were carefully selected and reviewed from numerous submissions. The papers are organized in topical sections such as conceptual modeling and human factors; subsequence matching and streaming data; OLAP; graph databases; spatial data management; parallel and distributed data processing; query optimization, recovery, and databases...