UM '07 Proceedings of the 11th international conference on User Modeling
Respecting Users' Individual Privacy Constraints in Web Personalization
UM '07 Proceedings of the 11th international conference on User Modeling
Exploiting semantic proximities for content search over p2p networks
Computer Communications
Performance Evaluation of a Privacy-Enhancing Framework for Personalized Websites
UMAP '09 Proceedings of the 17th International Conference on User Modeling, Adaptation, and Personalization: formerly UM and AH
An evaluation study of clustering algorithms in the scope of user communities assessment
Computers & Mathematics with Applications
The adaptive web
Proceedings of the 1st International Workshop on Information Heterogeneity and Fusion in Recommender Systems
User modelling server for adaptive help
Intelligent Decision Technologies - Special issue on knowledge-based environments and services in human-computer interaction
A framework for user controlled remembering and forgetting in long term user models
Proceedings of the 13th international conference on Ubiquitous computing
User model interoperability: a survey
User Modeling and User-Adapted Interaction
Theoretical foundations for user-controlled forgetting in scrutable long term user models
Proceedings of the 23rd Australian Computer-Human Interaction Conference
SBNMA '11 Proceedings of the 2011 ACM workshop on Social and behavioural networked media access
User modelling ecosystems: a user-centred approach
UMAP'12 Proceedings of the 20th international conference on User Modeling, Adaptation, and Personalization
ACM Transactions on Interactive Intelligent Systems (TiiS) - Special issue on highlights of the decade in interactive intelligent systems
A PLA-based privacy-enhancing user modeling framework and its evaluation
User Modeling and User-Adapted Interaction
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Representation components of user modeling servers have been traditionally based on simple file structures and database systems. We propose directory systems as an alternative, which offer numerous advantages over the more traditional approaches: international vendor-independent standardization, demonstrated performance and scalability, dynamic and transparent management of distributed information, built-in replication and synchronization, a rich number of pre-defined types of user information, and extensibility of the core representation language for new information types and for data types with associated semantics. Directories also allow for the virtual centralization of distributed user models and their selective centralized replication if better performance is needed. We present UMS, a user modeling server that is based on the Lightweight Directory Access Protocol (LDAP). UMS allows for the representation of different models (such as user and usage profiles, and system and service models), and for the attachment of arbitrary components that perform user modeling tasks upon these models. External clients such as user-adaptive applications can submit and retrieve information about users. We describe a simulation experiment to test the runtime performance of this server, and present a theory of how the parameters of such an experiment can be derived from empirical web usage research. The results show that the performance of UMS meets the requirements of current small and medium websites already on very modest hardware platforms, and those of very large websites in an entry-level business server configuration.