The field of human information behavior runs the gamut of processes from the realization of
a need or gap in understanding, to the search for information from one or more sources to fill …

With the rise of AI and data mining techniques, group profiling and group-level analysis have
been increasingly used in many domains, including policy making and direct marketing. In …

Users tend to articulate their complex information needs in only a few keywords, making
underspecified statements of request the main bottleneck for retrieval effectiveness. Taking …

Hierarchy is an effective and common way of organizing data and representing their
relationships at different levels of abstraction. However, hierarchical data dependencies …

There is an increasing volume of semantically annotated data available, in particular due to
the emerging use of knowledge bases to annotate or classify dynamic data on the web. This …

This paper reviews literature, market reports and commercial sites in order to identify
features of personal profiles. This is a preparatory step in the development of a personalized …

Over the last decade portals have become an important facet of the Web and of structured
communities like companies. This paper presents a knowledge portal that has been …

Transforming the data into a suitable representation is the first key step of data analysis, and
the performance of any data oriented method is heavily depending on it. We study questions …

This paper presents the University of Amsterdam's participation in the TREC 2015
Contextual Suggestion Track. Creating effective profiles for both users and contexts is the …

In this paper, we present the participation of the University of Amsterdam's ExPoSe team in
the TREC 2016 Contextual Suggestion Track. The main goal of contextual suggestion track …