During the information search and retrieval (ISR) process, user-system interactions such as
submitting queries, examining results, and engaging with information impose some degree …

Two paradigms currently exist for information search. The first is the library paradigm, which
has been largely automated and is the prevailing paradigm in today's web search. The …

A key functionality in Collaborative Question Answering (CQA) systems is the assignment of
the questions from information seekers to the potential answerers. An attractive solution is to …

Intelligent interaction between humans and computers has been a dream of artificial
intelligence since the beginning of digital era and one of the original motivations behind the …

Knowledge management systems for asynchronous knowledge sharing–such as Intranets,
Wikis, or file shares–often suffer from a lack of contributions. This is mainly because …

Abstract Community-based Question Answering (CQA) sites, such as Yahoo! Answers and
Quora, provide a promising way of finding and sharing information online. This thesis aims …