Information retrieval systems have typically concentrated on retrieving a set of documents which are relevant to a user's query. This paper describes a system that attempts t...
Two studies report upon the effect of asking learners to answer questions when learning in a hypertext environment, even when no immediate feedback is given to learners about the a...
Abstract. Question answering systems users may find answers without any supporting information insufficient for determining trust levels. Once those question answering systems beg...
Ilya Zaihrayeu, Paulo Pinheiro da Silva, Deborah L...
The existence question for the family of 4-(15, 5, ) designs has long been answered for all values of except = 2. Here, we resolve this last undecided case and prove that 4-(15, ...
Ziba Eslami, Gholamreza B. Khosrovshahi, M. Mohamm...
: In this paper we deal with the arc ranking problem of directed graphs. We give some classes of graphs for which the arc ranking problem is polynomially solvable. We prove that de...