2nd Workshop on LifeLong User Modelling

Recent technological developments enabled users to create detailed log files containing their everyday activities. These log files, also referred to as lifelogs, open gates for interesting new research challenges, such as the identification of long-term and short-term user interests and behaviour. In the context of this workshop, we focus on an emerging challenge, namely the creation of lifelong user models from a potentially large and diverse data corpus that has been created over a very long period of time. Such lifelong user models pose interesting questions, e.g. regarding the scalability of existing user modeling techniques with respect to the diverse input sources and the pure size of the lifelogs. The importance of this role for the lifelong user model is reflected in the identification of personalised lifelong learning as a Grand Challenge Problem by the Computing Research Association (CRA), United Kingdom Computing Research Committee (UKCRC) and National Academy of Engineering. Following the successful first Workshop on Lifelong User Modelling which was held in conjunction with UMAP 2009 (http://rp-www.cs.usyd. edu.au/~llum/2009_UMAP09_llum/), this workshop provided a platform for researchers from both user modelling and lifelogging communities to discuss emerging research trends in this field.